diff options
| author | Joel Fernandes <joelagnelf@nvidia.com> | 2026-07-18 13:15:36 -0400 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2026-07-23 10:39:57 -0700 |
| commit | 34ff636f322c6d5e4f0a52338fa63a7dff09a495 (patch) | |
| tree | 7629759c1ec7148b95bc8ab3080df20a5ecd2273 /drivers/crypto/hisilicon | |
| download | linux-stable-34ff636f322c6d5e4f0a52338fa63a7dff09a495.tar.gz linux-stable-34ff636f322c6d5e4f0a52338fa63a7dff09a495.zip | |
scftorture: Count single_rpc offline failures in statistics outputgrafted
scf_torture_stats_print() aggregates each invoker thread's counters
into a local scf_statistics structure before printing, but the
n_single_rpc_ofl field is missing from the aggregation loop. As a
result, the "single_rpc_ofl" value printed in the statistics line is
always zero, even when smp_call_function_single() invocations for the
RPC test have failed due to offline CPUs and been counted by the
invoker threads.
Add the missing accumulation so that the printed value reflects the
actual counts.
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'drivers/crypto/hisilicon')
24 files changed, 22589 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/Kconfig b/drivers/crypto/hisilicon/Kconfig new file mode 100644 index 000000000..aeff08ccb --- /dev/null +++ b/drivers/crypto/hisilicon/Kconfig @@ -0,0 +1,77 @@ +# SPDX-License-Identifier: GPL-2.0 + +config CRYPTO_DEV_HISI_SEC + tristate "Support for Hisilicon SEC crypto block cipher accelerator" + select CRYPTO_SKCIPHER + select CRYPTO_ALGAPI + select CRYPTO_LIB_DES + select SG_SPLIT + depends on ARM64 || COMPILE_TEST + depends on HAS_IOMEM + help + Support for Hisilicon SEC Engine in Hip06 and Hip07 + + To compile this as a module, choose M here: the module + will be called hisi_sec. + +config CRYPTO_DEV_HISI_SEC2 + tristate "Support for HiSilicon SEC2 crypto block cipher accelerator" + select CRYPTO_SKCIPHER + select CRYPTO_ALGAPI + select CRYPTO_LIB_DES + select CRYPTO_DEV_HISI_QM + select CRYPTO_AEAD + select CRYPTO_AUTHENC + select CRYPTO_HMAC + select CRYPTO_SHA1 + select CRYPTO_SHA256 + select CRYPTO_SHA512 + select CRYPTO_SM4_GENERIC + depends on PCI_MSI + depends on UACCE || UACCE=n + depends on ARM64 || (COMPILE_TEST && 64BIT) + depends on ACPI + help + Support for HiSilicon SEC Engine of version 2 in crypto subsystem. + It provides AES, SM4, and 3DES algorithms with ECB + CBC, and XTS cipher mode, and AEAD algorithms. + + To compile this as a module, choose M here: the module + will be called hisi_sec2. + +config CRYPTO_DEV_HISI_QM + tristate + depends on ARM64 || COMPILE_TEST + depends on PCI_MSI + depends on UACCE || UACCE=n + depends on ACPI + help + HiSilicon accelerator engines use a common queue management + interface. Specific engine driver may use this module. + +config CRYPTO_DEV_HISI_ZIP + tristate "Support for HiSilicon ZIP accelerator" + depends on PCI_MSI + depends on ARM64 || (COMPILE_TEST && 64BIT) + depends on !CPU_BIG_ENDIAN || COMPILE_TEST + depends on UACCE || UACCE=n + depends on ACPI + select CRYPTO_DEV_HISI_QM + select CRYPTO_DEFLATE + select CRYPTO_LZ4 + help + Support for HiSilicon ZIP Driver + +config CRYPTO_DEV_HISI_HPRE + tristate "Support for HISI HPRE accelerator" + depends on PCI_MSI + depends on UACCE || UACCE=n + depends on ARM64 || (COMPILE_TEST && 64BIT) + depends on ACPI + select CRYPTO_DEV_HISI_QM + select CRYPTO_DH + select CRYPTO_RSA + select CRYPTO_ECDH + help + Support for HiSilicon HPRE(High Performance RSA Engine) + accelerator, which can accelerate RSA and DH algorithms. diff --git a/drivers/crypto/hisilicon/Makefile b/drivers/crypto/hisilicon/Makefile new file mode 100644 index 000000000..e1068ee9f --- /dev/null +++ b/drivers/crypto/hisilicon/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_CRYPTO_DEV_HISI_HPRE) += hpre/ +obj-$(CONFIG_CRYPTO_DEV_HISI_SEC) += sec/ +obj-$(CONFIG_CRYPTO_DEV_HISI_SEC2) += sec2/ +obj-$(CONFIG_CRYPTO_DEV_HISI_QM) += hisi_qm.o +hisi_qm-objs = qm.o sgl.o debugfs.o +obj-$(CONFIG_CRYPTO_DEV_HISI_ZIP) += zip/ diff --git a/drivers/crypto/hisilicon/debugfs.c b/drivers/crypto/hisilicon/debugfs.c new file mode 100644 index 000000000..3ee6de16e --- /dev/null +++ b/drivers/crypto/hisilicon/debugfs.c @@ -0,0 +1,1272 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2022 HiSilicon Limited. */ +#include <linux/hisi_acc_qm.h> +#include "qm_common.h" + +#define QM_DFX_BASE 0x0100000 +#define QM_DFX_STATE1 0x0104000 +#define QM_DFX_STATE2 0x01040C8 +#define QM_DFX_COMMON 0x0000 +#define QM_DFX_BASE_LEN 0x5A +#define QM_DFX_STATE1_LEN 0x2E +#define QM_DFX_STATE2_LEN 0x11 +#define QM_DFX_COMMON_LEN 0xC3 +#define QM_DFX_REGS_LEN 4UL +#define QM_DBG_TMP_BUF_LEN 22 +#define QM_XQC_ADDR_MASK GENMASK(31, 0) +#define CURRENT_FUN_MASK GENMASK(5, 0) +#define CURRENT_Q_MASK GENMASK(31, 16) +#define QM_SQE_ADDR_MASK GENMASK(7, 0) + +#define QM_DFX_MB_CNT_VF 0x104010 +#define QM_DFX_DB_CNT_VF 0x104020 +#define QM_DFX_SQE_CNT_VF_SQN 0x104030 +#define QM_DFX_CQE_CNT_VF_CQN 0x104040 +#define QM_DFX_QN_SHIFT 16 +#define QM_DFX_CNT_CLR_CE 0x100118 +#define QM_DBG_WRITE_LEN 1024 +#define QM_IN_IDLE_ST_REG 0x1040e4 +#define QM_IN_IDLE_STATE 0x1 + +static const char * const qm_debug_file_name[] = { + [CURRENT_QM] = "current_qm", + [CURRENT_Q] = "current_q", + [CLEAR_ENABLE] = "clear_enable", +}; + +static const char * const qm_s[] = { + "work", "stop", +}; + +struct qm_dfx_item { + const char *name; + u32 offset; +}; + +struct qm_cmd_dump_item { + const char *cmd; + const char *info_name; + int (*dump_fn)(struct hisi_qm *qm, char *cmd, const char *info_name); +}; + +static struct qm_dfx_item qm_dfx_files[] = { + {"err_irq", offsetof(struct qm_dfx, err_irq_cnt)}, + {"aeq_irq", offsetof(struct qm_dfx, aeq_irq_cnt)}, + {"abnormal_irq", offsetof(struct qm_dfx, abnormal_irq_cnt)}, + {"create_qp_err", offsetof(struct qm_dfx, create_qp_err_cnt)}, + {"mb_err", offsetof(struct qm_dfx, mb_err_cnt)}, +}; + +#define CNT_CYC_REGS_NUM 10 +static const struct debugfs_reg32 qm_dfx_regs[] = { + /* XXX_CNT are reading clear register */ + {"QM_ECC_1BIT_CNT ", 0x104000}, + {"QM_ECC_MBIT_CNT ", 0x104008}, + {"QM_DFX_MB_CNT ", 0x104018}, + {"QM_DFX_DB_CNT ", 0x104028}, + {"QM_DFX_SQE_CNT ", 0x104038}, + {"QM_DFX_CQE_CNT ", 0x104048}, + {"QM_DFX_SEND_SQE_TO_ACC_CNT ", 0x104050}, + {"QM_DFX_WB_SQE_FROM_ACC_CNT ", 0x104058}, + {"QM_DFX_ACC_FINISH_CNT ", 0x104060}, + {"QM_DFX_CQE_ERR_CNT ", 0x1040b4}, + {"QM_DFX_FUNS_ACTIVE_ST ", 0x200}, + {"QM_ECC_1BIT_INF ", 0x104004}, + {"QM_ECC_MBIT_INF ", 0x10400c}, + {"QM_DFX_ACC_RDY_VLD0 ", 0x1040a0}, + {"QM_DFX_ACC_RDY_VLD1 ", 0x1040a4}, + {"QM_DFX_AXI_RDY_VLD ", 0x1040a8}, + {"QM_DFX_FF_ST0 ", 0x1040c8}, + {"QM_DFX_FF_ST1 ", 0x1040cc}, + {"QM_DFX_FF_ST2 ", 0x1040d0}, + {"QM_DFX_FF_ST3 ", 0x1040d4}, + {"QM_DFX_FF_ST4 ", 0x1040d8}, + {"QM_DFX_FF_ST5 ", 0x1040dc}, + {"QM_DFX_FF_ST6 ", 0x1040e0}, + {"QM_IN_IDLE_ST ", 0x1040e4}, + {"QM_CACHE_CTL ", 0x100050}, + {"QM_TIMEOUT_CFG ", 0x100070}, + {"QM_DB_TIMEOUT_CFG ", 0x100074}, + {"QM_FLR_PENDING_TIME_CFG ", 0x100078}, + {"QM_ARUSR_MCFG1 ", 0x100088}, + {"QM_AWUSR_MCFG1 ", 0x100098}, + {"QM_AXI_M_CFG_ENABLE ", 0x1000B0}, + {"QM_RAS_CE_THRESHOLD ", 0x1000F8}, + {"QM_AXI_TIMEOUT_CTRL ", 0x100120}, + {"QM_AXI_TIMEOUT_STATUS ", 0x100124}, + {"QM_CQE_AGGR_TIMEOUT_CTRL ", 0x100144}, + {"ACC_RAS_MSI_INT_SEL ", 0x1040fc}, + {"QM_CQE_OUT ", 0x104100}, + {"QM_EQE_OUT ", 0x104104}, + {"QM_AEQE_OUT ", 0x104108}, + {"QM_DB_INFO0 ", 0x104180}, + {"QM_DB_INFO1 ", 0x104184}, + {"QM_AM_CTRL_GLOBAL ", 0x300000}, + {"QM_AM_CURR_PORT_STS ", 0x300100}, + {"QM_AM_CURR_TRANS_RETURN ", 0x300150}, + {"QM_AM_CURR_RD_MAX_TXID ", 0x300154}, + {"QM_AM_CURR_WR_MAX_TXID ", 0x300158}, + {"QM_AM_ALARM_RRESP ", 0x300180}, + {"QM_AM_ALARM_BRESP ", 0x300184}, +}; + +static const struct debugfs_reg32 qm_vf_dfx_regs[] = { + {"QM_DFX_FUNS_ACTIVE_ST ", 0x200}, +}; + +/* define the QM's dfx regs region and region length */ +static struct dfx_diff_registers qm_diff_regs[] = { + { + .reg_offset = QM_DFX_BASE, + .reg_len = QM_DFX_BASE_LEN, + }, { + .reg_offset = QM_DFX_STATE1, + .reg_len = QM_DFX_STATE1_LEN, + }, { + .reg_offset = QM_DFX_STATE2, + .reg_len = QM_DFX_STATE2_LEN, + }, { + .reg_offset = QM_DFX_COMMON, + .reg_len = QM_DFX_COMMON_LEN, + }, +}; + +static struct hisi_qm *file_to_qm(struct debugfs_file *file) +{ + struct qm_debug *debug = file->debug; + + return container_of(debug, struct hisi_qm, debug); +} + +static ssize_t qm_cmd_read(struct file *filp, char __user *buffer, + size_t count, loff_t *pos) +{ + char buf[QM_DBG_READ_LEN]; + int len; + + len = scnprintf(buf, QM_DBG_READ_LEN, "%s\n", + "Please echo help to cmd to get help information"); + + return simple_read_from_buffer(buffer, count, pos, buf, len); +} + +static void dump_show(struct hisi_qm *qm, void *info, + unsigned int info_size, const char *info_name) +{ + struct device *dev = &qm->pdev->dev; + u8 *info_curr = info; + u32 i; +#define BYTE_PER_DW 4 + + dev_info(dev, "%s DUMP\n", info_name); + for (i = 0; i < info_size; i += BYTE_PER_DW, info_curr += BYTE_PER_DW) { + pr_info("DW%u: %02X%02X %02X%02X\n", i / BYTE_PER_DW, + *(info_curr + 3), *(info_curr + 2), *(info_curr + 1), *(info_curr)); + } +} + +static int qm_sqc_dump(struct hisi_qm *qm, char *s, const char *name) +{ + struct device *dev = &qm->pdev->dev; + struct qm_sqc sqc; + u32 qp_id; + int ret; + + if (!s) + return -EINVAL; + + ret = kstrtou32(s, 0, &qp_id); + if (ret || qp_id >= qm->qp_num) { + dev_err(dev, "Please input qp num (0-%u)", qm->qp_num - 1); + return -EINVAL; + } + + ret = qm_set_and_get_xqc(qm, QM_MB_CMD_SQC, &sqc, qp_id, 1); + if (!ret) { + sqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK); + sqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK); + dump_show(qm, &sqc, sizeof(struct qm_sqc), name); + + return 0; + } + + down_read(&qm->qps_lock); + if (qm->sqc) { + memcpy(&sqc, qm->sqc + qp_id, sizeof(struct qm_sqc)); + sqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK); + sqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK); + dump_show(qm, &sqc, sizeof(struct qm_sqc), "SOFT SQC"); + } + up_read(&qm->qps_lock); + + return 0; +} + +static int qm_cqc_dump(struct hisi_qm *qm, char *s, const char *name) +{ + struct device *dev = &qm->pdev->dev; + struct qm_cqc cqc; + u32 qp_id; + int ret; + + if (!s) + return -EINVAL; + + ret = kstrtou32(s, 0, &qp_id); + if (ret || qp_id >= qm->qp_num) { + dev_err(dev, "Please input qp num (0-%u)", qm->qp_num - 1); + return -EINVAL; + } + + ret = qm_set_and_get_xqc(qm, QM_MB_CMD_CQC, &cqc, qp_id, 1); + if (!ret) { + cqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK); + cqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK); + dump_show(qm, &cqc, sizeof(struct qm_cqc), name); + + return 0; + } + + down_read(&qm->qps_lock); + if (qm->cqc) { + memcpy(&cqc, qm->cqc + qp_id, sizeof(struct qm_cqc)); + cqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK); + cqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK); + dump_show(qm, &cqc, sizeof(struct qm_cqc), "SOFT CQC"); + } + up_read(&qm->qps_lock); + + return 0; +} + +static int qm_eqc_aeqc_dump(struct hisi_qm *qm, char *s, const char *name) +{ + struct device *dev = &qm->pdev->dev; + struct qm_aeqc aeqc; + struct qm_eqc eqc; + size_t size; + void *xeqc; + int ret; + u8 cmd; + + if (strsep(&s, " ")) { + dev_err(dev, "Please do not input extra characters!\n"); + return -EINVAL; + } + + if (!strcmp(name, "EQC")) { + cmd = QM_MB_CMD_EQC; + size = sizeof(struct qm_eqc); + xeqc = &eqc; + } else { + cmd = QM_MB_CMD_AEQC; + size = sizeof(struct qm_aeqc); + xeqc = &aeqc; + } + + ret = qm_set_and_get_xqc(qm, cmd, xeqc, 0, 1); + if (ret) + return ret; + + aeqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK); + aeqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK); + eqc.base_h = cpu_to_le32(QM_XQC_ADDR_MASK); + eqc.base_l = cpu_to_le32(QM_XQC_ADDR_MASK); + dump_show(qm, xeqc, size, name); + + return ret; +} + +static int q_dump_param_parse(struct hisi_qm *qm, char *s, + u32 *e_id, u32 *q_id, u16 q_depth) +{ + struct device *dev = &qm->pdev->dev; + unsigned int qp_num = qm->qp_num; + char *presult; + int ret; + + presult = strsep(&s, " "); + if (!presult) { + dev_err(dev, "Please input qp number!\n"); + return -EINVAL; + } + + ret = kstrtou32(presult, 0, q_id); + if (ret || *q_id >= qp_num) { + dev_err(dev, "Please input qp num (0-%u)", qp_num - 1); + return -EINVAL; + } + + presult = strsep(&s, " "); + if (!presult) { + dev_err(dev, "Please input sqe number!\n"); + return -EINVAL; + } + + ret = kstrtou32(presult, 0, e_id); + if (ret || *e_id >= q_depth) { + dev_err(dev, "Please input sqe num (0-%d)", q_depth - 1); + return -EINVAL; + } + + if (strsep(&s, " ")) { + dev_err(dev, "Please do not input extra characters!\n"); + return -EINVAL; + } + + return 0; +} + +static int qm_sq_dump(struct hisi_qm *qm, char *s, const char *name) +{ + u16 sq_depth = qm->qp_array->sq_depth; + struct hisi_qp *qp; + u32 qp_id, sqe_id; + void *sqe; + int ret; + + ret = q_dump_param_parse(qm, s, &sqe_id, &qp_id, sq_depth); + if (ret) + return ret; + + sqe = kzalloc(qm->sqe_size, GFP_KERNEL); + if (!sqe) + return -ENOMEM; + + qp = &qm->qp_array[qp_id]; + memcpy(sqe, qp->sqe + sqe_id * qm->sqe_size, qm->sqe_size); + memset(sqe + qm->debug.sqe_mask_offset, QM_SQE_ADDR_MASK, + qm->debug.sqe_mask_len); + + dump_show(qm, sqe, qm->sqe_size, name); + + kfree(sqe); + + return 0; +} + +static int qm_cq_dump(struct hisi_qm *qm, char *s, const char *name) +{ + struct qm_cqe *cqe_curr; + struct hisi_qp *qp; + u32 qp_id, cqe_id; + int ret; + + ret = q_dump_param_parse(qm, s, &cqe_id, &qp_id, qm->qp_array->cq_depth); + if (ret) + return ret; + + qp = &qm->qp_array[qp_id]; + cqe_curr = qp->cqe + cqe_id; + dump_show(qm, cqe_curr, sizeof(struct qm_cqe), name); + + return 0; +} + +static int qm_eq_aeq_dump(struct hisi_qm *qm, char *s, const char *name) +{ + struct device *dev = &qm->pdev->dev; + u16 xeq_depth; + size_t size; + void *xeqe; + u32 xeqe_id; + int ret; + + if (!s) + return -EINVAL; + + ret = kstrtou32(s, 0, &xeqe_id); + if (ret) + return -EINVAL; + + if (!strcmp(name, "EQE")) { + xeq_depth = qm->eq_depth; + size = sizeof(struct qm_eqe); + } else { + xeq_depth = qm->aeq_depth; + size = sizeof(struct qm_aeqe); + } + + if (xeqe_id >= xeq_depth) { + dev_err(dev, "Please input eqe or aeqe num (0-%d)", xeq_depth - 1); + return -EINVAL; + } + + down_read(&qm->qps_lock); + + if (qm->eqe && !strcmp(name, "EQE")) { + xeqe = qm->eqe + xeqe_id; + } else if (qm->aeqe && !strcmp(name, "AEQE")) { + xeqe = qm->aeqe + xeqe_id; + } else { + ret = -EINVAL; + goto err_unlock; + } + + dump_show(qm, xeqe, size, name); + +err_unlock: + up_read(&qm->qps_lock); + return ret; +} + +static int qm_dbg_help(struct hisi_qm *qm, char *s) +{ + struct device *dev = &qm->pdev->dev; + + if (strsep(&s, " ")) { + dev_err(dev, "Please do not input extra characters!\n"); + return -EINVAL; + } + + dev_info(dev, "available commands:\n"); + dev_info(dev, "sqc <num>\n"); + dev_info(dev, "cqc <num>\n"); + dev_info(dev, "eqc\n"); + dev_info(dev, "aeqc\n"); + dev_info(dev, "sq <num> <e>\n"); + dev_info(dev, "cq <num> <e>\n"); + dev_info(dev, "eq <e>\n"); + dev_info(dev, "aeq <e>\n"); + + return 0; +} + +static const struct qm_cmd_dump_item qm_cmd_dump_table[] = { + { + .cmd = "sqc", + .info_name = "SQC", + .dump_fn = qm_sqc_dump, + }, { + .cmd = "cqc", + .info_name = "CQC", + .dump_fn = qm_cqc_dump, + }, { + .cmd = "eqc", + .info_name = "EQC", + .dump_fn = qm_eqc_aeqc_dump, + }, { + .cmd = "aeqc", + .info_name = "AEQC", + .dump_fn = qm_eqc_aeqc_dump, + }, { + .cmd = "sq", + .info_name = "SQE", + .dump_fn = qm_sq_dump, + }, { + .cmd = "cq", + .info_name = "CQE", + .dump_fn = qm_cq_dump, + }, { + .cmd = "eq", + .info_name = "EQE", + .dump_fn = qm_eq_aeq_dump, + }, { + .cmd = "aeq", + .info_name = "AEQE", + .dump_fn = qm_eq_aeq_dump, + }, +}; + +static int qm_cmd_write_dump(struct hisi_qm *qm, const char *cmd_buf) +{ + struct device *dev = &qm->pdev->dev; + char *presult, *s, *s_tmp; + int table_size, i, ret; + + s = kstrdup(cmd_buf, GFP_KERNEL); + if (!s) + return -ENOMEM; + + s_tmp = s; + presult = strsep(&s, " "); + if (!presult) { + ret = -EINVAL; + goto err_buffer_free; + } + + if (!strcmp(presult, "help")) { + ret = qm_dbg_help(qm, s); + goto err_buffer_free; + } + + table_size = ARRAY_SIZE(qm_cmd_dump_table); + for (i = 0; i < table_size; i++) { + if (!strcmp(presult, qm_cmd_dump_table[i].cmd)) { + ret = qm_cmd_dump_table[i].dump_fn(qm, s, + qm_cmd_dump_table[i].info_name); + break; + } + } + + if (i == table_size) { + dev_info(dev, "Please echo help\n"); + ret = -EINVAL; + } + +err_buffer_free: + kfree(s_tmp); + + return ret; +} + +static ssize_t qm_cmd_write(struct file *filp, const char __user *buffer, + size_t count, loff_t *pos) +{ + struct hisi_qm *qm = filp->private_data; + char *cmd_buf, *cmd_buf_tmp; + int ret; + + if (*pos) + return 0; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + /* Judge if the instance is being reset. */ + if (unlikely(atomic_read(&qm->status.flags) == QM_STOP)) { + ret = 0; + goto put_dfx_access; + } + + if (count > QM_DBG_WRITE_LEN) { + ret = -ENOSPC; + goto put_dfx_access; + } + + cmd_buf = memdup_user_nul(buffer, count); + if (IS_ERR(cmd_buf)) { + ret = PTR_ERR(cmd_buf); + goto put_dfx_access; + } + + cmd_buf_tmp = strchr(cmd_buf, '\n'); + if (cmd_buf_tmp) { + *cmd_buf_tmp = '\0'; + count = cmd_buf_tmp - cmd_buf + 1; + } + + ret = qm_cmd_write_dump(qm, cmd_buf); + if (ret) { + kfree(cmd_buf); + goto put_dfx_access; + } + + kfree(cmd_buf); + + ret = count; + +put_dfx_access: + hisi_qm_put_dfx_access(qm); + return ret; +} + +static const struct file_operations qm_cmd_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = qm_cmd_read, + .write = qm_cmd_write, +}; + +/** + * hisi_qm_regs_dump() - Dump registers's value. + * @s: debugfs file handle. + * @regset: accelerator registers information. + * + * Dump accelerator registers. + */ +void hisi_qm_regs_dump(struct seq_file *s, struct debugfs_regset32 *regset) +{ + struct pci_dev *pdev = to_pci_dev(regset->dev); + struct hisi_qm *qm = pci_get_drvdata(pdev); + const struct debugfs_reg32 *regs = regset->regs; + int regs_len = regset->nregs; + int i, ret; + u32 val; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return; + + for (i = 0; i < regs_len; i++) { + val = readl(regset->base + regs[i].offset); + seq_printf(s, "%s= 0x%08x\n", regs[i].name, val); + } + + hisi_qm_put_dfx_access(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_regs_dump); + +static int qm_regs_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + struct debugfs_regset32 regset; + + if (qm->fun_type == QM_HW_PF) { + regset.regs = qm_dfx_regs; + regset.nregs = ARRAY_SIZE(qm_dfx_regs); + } else { + regset.regs = qm_vf_dfx_regs; + regset.nregs = ARRAY_SIZE(qm_vf_dfx_regs); + } + + regset.base = qm->io_base; + regset.dev = &qm->pdev->dev; + + hisi_qm_regs_dump(s, ®set); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(qm_regs); + +static u32 current_q_read(struct hisi_qm *qm) +{ + return readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) >> QM_DFX_QN_SHIFT; +} + +static int current_q_write(struct hisi_qm *qm, u32 val) +{ + u32 tmp; + + if (val >= qm->debug.curr_qm_qp_num) + return -EINVAL; + + tmp = val << QM_DFX_QN_SHIFT | + (readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) & CURRENT_FUN_MASK); + writel(tmp, qm->io_base + QM_DFX_SQE_CNT_VF_SQN); + + tmp = val << QM_DFX_QN_SHIFT | + (readl(qm->io_base + QM_DFX_CQE_CNT_VF_CQN) & CURRENT_FUN_MASK); + writel(tmp, qm->io_base + QM_DFX_CQE_CNT_VF_CQN); + + return 0; +} + +static u32 clear_enable_read(struct hisi_qm *qm) +{ + return readl(qm->io_base + QM_DFX_CNT_CLR_CE); +} + +/* rd_clr_ctrl 1 enable read clear, otherwise 0 disable it */ +static int clear_enable_write(struct hisi_qm *qm, u32 rd_clr_ctrl) +{ + if (rd_clr_ctrl > 1) + return -EINVAL; + + writel(rd_clr_ctrl, qm->io_base + QM_DFX_CNT_CLR_CE); + + return 0; +} + +static u32 current_qm_read(struct hisi_qm *qm) +{ + return readl(qm->io_base + QM_DFX_MB_CNT_VF); +} + +static int qm_get_vf_qp_num(struct hisi_qm *qm, u32 fun_num) +{ + u32 remain_q_num, vfq_num; + u32 num_vfs = qm->vfs_num; + + vfq_num = (qm->ctrl_qp_num - qm->qp_num) / num_vfs; + if (vfq_num >= qm->max_qp_num) + return qm->max_qp_num; + + remain_q_num = (qm->ctrl_qp_num - qm->qp_num) % num_vfs; + if (vfq_num + remain_q_num <= qm->max_qp_num) + return fun_num == num_vfs ? vfq_num + remain_q_num : vfq_num; + + /* + * if vfq_num + remain_q_num > max_qp_num, the last VFs, + * each with one more queue. + */ + return fun_num + remain_q_num > num_vfs ? vfq_num + 1 : vfq_num; +} + +static int current_qm_write(struct hisi_qm *qm, u32 val) +{ + u32 tmp; + + if (val > qm->vfs_num) + return -EINVAL; + + /* According PF or VF Dev ID to calculation curr_qm_qp_num and store */ + if (!val) + qm->debug.curr_qm_qp_num = qm->qp_num; + else + qm->debug.curr_qm_qp_num = qm_get_vf_qp_num(qm, val); + + writel(val, qm->io_base + QM_DFX_MB_CNT_VF); + writel(val, qm->io_base + QM_DFX_DB_CNT_VF); + + tmp = val | + (readl(qm->io_base + QM_DFX_SQE_CNT_VF_SQN) & CURRENT_Q_MASK); + writel(tmp, qm->io_base + QM_DFX_SQE_CNT_VF_SQN); + + tmp = val | + (readl(qm->io_base + QM_DFX_CQE_CNT_VF_CQN) & CURRENT_Q_MASK); + writel(tmp, qm->io_base + QM_DFX_CQE_CNT_VF_CQN); + + return 0; +} + +static ssize_t qm_debug_read(struct file *filp, char __user *buf, + size_t count, loff_t *pos) +{ + struct debugfs_file *file = filp->private_data; + enum qm_debug_file index = file->index; + struct hisi_qm *qm = file_to_qm(file); + char tbuf[QM_DBG_TMP_BUF_LEN]; + u32 val; + int ret; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + mutex_lock(&file->lock); + switch (index) { + case CURRENT_QM: + val = current_qm_read(qm); + break; + case CURRENT_Q: + val = current_q_read(qm); + break; + case CLEAR_ENABLE: + val = clear_enable_read(qm); + break; + default: + goto err_input; + } + mutex_unlock(&file->lock); + + hisi_qm_put_dfx_access(qm); + ret = scnprintf(tbuf, QM_DBG_TMP_BUF_LEN, "%u\n", val); + return simple_read_from_buffer(buf, count, pos, tbuf, ret); + +err_input: + mutex_unlock(&file->lock); + hisi_qm_put_dfx_access(qm); + return -EINVAL; +} + +static ssize_t qm_debug_write(struct file *filp, const char __user *buf, + size_t count, loff_t *pos) +{ + struct debugfs_file *file = filp->private_data; + enum qm_debug_file index = file->index; + struct hisi_qm *qm = file_to_qm(file); + unsigned long val; + char tbuf[QM_DBG_TMP_BUF_LEN]; + int len, ret; + + if (*pos != 0) + return 0; + + if (count >= QM_DBG_TMP_BUF_LEN) + return -ENOSPC; + + len = simple_write_to_buffer(tbuf, QM_DBG_TMP_BUF_LEN - 1, pos, buf, + count); + if (len < 0) + return len; + + tbuf[len] = '\0'; + if (kstrtoul(tbuf, 0, &val)) + return -EFAULT; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + mutex_lock(&file->lock); + switch (index) { + case CURRENT_QM: + ret = current_qm_write(qm, val); + break; + case CURRENT_Q: + ret = current_q_write(qm, val); + break; + case CLEAR_ENABLE: + ret = clear_enable_write(qm, val); + break; + default: + ret = -EINVAL; + } + mutex_unlock(&file->lock); + + hisi_qm_put_dfx_access(qm); + + if (ret) + return ret; + + return count; +} + +static const struct file_operations qm_debug_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = qm_debug_read, + .write = qm_debug_write, +}; + +static void dfx_regs_uninit(struct hisi_qm *qm, + struct dfx_diff_registers *dregs, int reg_len) +{ + int i; + + if (!dregs) + return; + + /* Setting the pointer is NULL to prevent double free */ + for (i = 0; i < reg_len; i++) { + if (!dregs[i].regs) + continue; + + kfree(dregs[i].regs); + dregs[i].regs = NULL; + } + kfree(dregs); +} + +static struct dfx_diff_registers *dfx_regs_init(struct hisi_qm *qm, + const struct dfx_diff_registers *cregs, u32 reg_len) +{ + struct dfx_diff_registers *diff_regs; + u32 j, base_offset; + int i; + + diff_regs = kzalloc_objs(*diff_regs, reg_len); + if (!diff_regs) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < reg_len; i++) { + if (!cregs[i].reg_len) + continue; + + diff_regs[i].reg_offset = cregs[i].reg_offset; + diff_regs[i].reg_len = cregs[i].reg_len; + diff_regs[i].regs = kcalloc(QM_DFX_REGS_LEN, cregs[i].reg_len, + GFP_KERNEL); + if (!diff_regs[i].regs) + goto alloc_error; + + for (j = 0; j < diff_regs[i].reg_len; j++) { + base_offset = diff_regs[i].reg_offset + + j * QM_DFX_REGS_LEN; + diff_regs[i].regs[j] = readl(qm->io_base + base_offset); + } + } + + return diff_regs; + +alloc_error: + while (i > 0) { + i--; + kfree(diff_regs[i].regs); + } + kfree(diff_regs); + return ERR_PTR(-ENOMEM); +} + +static int qm_diff_regs_init(struct hisi_qm *qm, + struct dfx_diff_registers *dregs, u32 reg_len) +{ + int ret; + + qm->debug.qm_diff_regs = dfx_regs_init(qm, qm_diff_regs, ARRAY_SIZE(qm_diff_regs)); + if (IS_ERR(qm->debug.qm_diff_regs)) { + ret = PTR_ERR(qm->debug.qm_diff_regs); + qm->debug.qm_diff_regs = NULL; + return ret; + } + + qm->debug.acc_diff_regs = dfx_regs_init(qm, dregs, reg_len); + if (IS_ERR(qm->debug.acc_diff_regs)) { + dfx_regs_uninit(qm, qm->debug.qm_diff_regs, ARRAY_SIZE(qm_diff_regs)); + ret = PTR_ERR(qm->debug.acc_diff_regs); + qm->debug.acc_diff_regs = NULL; + qm->debug.qm_diff_regs = NULL; + return ret; + } + + return 0; +} + +static void qm_last_regs_uninit(struct hisi_qm *qm) +{ + struct qm_debug *debug = &qm->debug; + + if (qm->fun_type == QM_HW_VF || !debug->qm_last_words) + return; + + kfree(debug->qm_last_words); + debug->qm_last_words = NULL; +} + +static int qm_last_regs_init(struct hisi_qm *qm) +{ + int dfx_regs_num = ARRAY_SIZE(qm_dfx_regs); + struct qm_debug *debug = &qm->debug; + int i; + + if (qm->fun_type == QM_HW_VF) + return 0; + + debug->qm_last_words = kcalloc(dfx_regs_num, sizeof(unsigned int), GFP_KERNEL); + if (!debug->qm_last_words) + return -ENOMEM; + + for (i = 0; i < dfx_regs_num; i++) { + debug->qm_last_words[i] = readl_relaxed(qm->io_base + + qm_dfx_regs[i].offset); + } + + return 0; +} + +static void qm_diff_regs_uninit(struct hisi_qm *qm, u32 reg_len) +{ + dfx_regs_uninit(qm, qm->debug.acc_diff_regs, reg_len); + qm->debug.acc_diff_regs = NULL; + dfx_regs_uninit(qm, qm->debug.qm_diff_regs, ARRAY_SIZE(qm_diff_regs)); + qm->debug.qm_diff_regs = NULL; +} + +/** + * hisi_qm_regs_debugfs_init() - Allocate memory for registers. + * @qm: device qm handle. + * @dregs: diff registers handle. + * @reg_len: diff registers region length. + */ +int hisi_qm_regs_debugfs_init(struct hisi_qm *qm, + struct dfx_diff_registers *dregs, u32 reg_len) +{ + int ret; + + if (!qm || !dregs) + return -EINVAL; + + if (qm->fun_type != QM_HW_PF) + return 0; + + ret = qm_last_regs_init(qm); + if (ret) { + dev_info(&qm->pdev->dev, "failed to init qm words memory!\n"); + return ret; + } + + ret = qm_diff_regs_init(qm, dregs, reg_len); + if (ret) { + qm_last_regs_uninit(qm); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(hisi_qm_regs_debugfs_init); + +/** + * hisi_qm_regs_debugfs_uninit() - Free memory for registers. + * @qm: device qm handle. + * @reg_len: diff registers region length. + */ +void hisi_qm_regs_debugfs_uninit(struct hisi_qm *qm, u32 reg_len) +{ + if (!qm || qm->fun_type != QM_HW_PF) + return; + + qm_diff_regs_uninit(qm, reg_len); + qm_last_regs_uninit(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_regs_debugfs_uninit); + +/** + * hisi_qm_acc_diff_regs_dump() - Dump registers's value. + * @qm: device qm handle. + * @s: Debugfs file handle. + * @dregs: diff registers handle. + * @regs_len: diff registers region length. + */ +void hisi_qm_acc_diff_regs_dump(struct hisi_qm *qm, struct seq_file *s, + struct dfx_diff_registers *dregs, u32 regs_len) +{ + u32 j, val, base_offset; + int i, ret; + + if (!qm || !s || !dregs) + return; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return; + + down_read(&qm->qps_lock); + for (i = 0; i < regs_len; i++) { + if (!dregs[i].reg_len) + continue; + + for (j = 0; j < dregs[i].reg_len; j++) { + base_offset = dregs[i].reg_offset + j * QM_DFX_REGS_LEN; + val = readl(qm->io_base + base_offset); + if (val != dregs[i].regs[j]) + seq_printf(s, "0x%08x = 0x%08x ---> 0x%08x\n", + base_offset, dregs[i].regs[j], val); + } + } + up_read(&qm->qps_lock); + + hisi_qm_put_dfx_access(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_acc_diff_regs_dump); + +void hisi_qm_show_last_dfx_regs(struct hisi_qm *qm) +{ + struct qm_debug *debug = &qm->debug; + struct pci_dev *pdev = qm->pdev; + u32 val; + int i; + + if (qm->fun_type == QM_HW_VF || !debug->qm_last_words) + return; + + for (i = 0; i < ARRAY_SIZE(qm_dfx_regs); i++) { + val = readl_relaxed(qm->io_base + qm_dfx_regs[i].offset); + if (debug->qm_last_words[i] != val) + pci_info(pdev, "%s \t= 0x%08x => 0x%08x\n", + qm_dfx_regs[i].name, debug->qm_last_words[i], val); + } +} + +static int qm_usage_percent(struct hisi_qm *qm, int chan_num) +{ + u32 val, used_bw, total_bw; + + val = readl(qm->io_base + QM_CHANNEL_USAGE_OFFSET + + chan_num * QM_CHANNEL_ADDR_INTRVL); + used_bw = lower_16_bits(val); + total_bw = upper_16_bits(val); + if (!total_bw) + return -EIO; + + if (total_bw <= used_bw) + return QM_MAX_DEV_USAGE; + + return (used_bw * QM_DEV_USAGE_RATE) / total_bw; +} + +static int qm_usage_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + bool dev_is_active = true; + int i, ret; + + /* If device is in suspended, usage is 0. */ + ret = hisi_qm_get_dfx_access(qm); + if (ret == -EAGAIN) { + dev_is_active = false; + } else if (ret) { + dev_err(&qm->pdev->dev, "failed to get dfx access for usage_show!\n"); + return ret; + } + + ret = 0; + for (i = 0; i < qm->channel_data.channel_num; i++) { + if (dev_is_active) { + ret = qm_usage_percent(qm, i); + if (ret < 0) { + hisi_qm_put_dfx_access(qm); + return ret; + } + } + seq_printf(s, "%s: %d\n", qm->channel_data.channel_name[i], ret); + } + + if (dev_is_active) + hisi_qm_put_dfx_access(qm); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(qm_usage); + +static int qm_diff_regs_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + + hisi_qm_acc_diff_regs_dump(qm, s, qm->debug.qm_diff_regs, + ARRAY_SIZE(qm_diff_regs)); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(qm_diff_regs); + +static int qm_state_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + u32 val; + int ret; + + /* If device is in suspended, directly return the idle state. */ + ret = hisi_qm_get_dfx_access(qm); + if (!ret) { + val = readl(qm->io_base + QM_IN_IDLE_ST_REG); + hisi_qm_put_dfx_access(qm); + } else if (ret == -EAGAIN) { + val = QM_IN_IDLE_STATE; + } else { + return ret; + } + + seq_printf(s, "%u\n", val); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(qm_state); + +static ssize_t qm_status_read(struct file *filp, char __user *buffer, + size_t count, loff_t *pos) +{ + struct hisi_qm *qm = filp->private_data; + char buf[QM_DBG_READ_LEN]; + int val, len; + + val = atomic_read(&qm->status.flags); + len = scnprintf(buf, QM_DBG_READ_LEN, "%s\n", qm_s[val]); + + return simple_read_from_buffer(buffer, count, pos, buf, len); +} + +static const struct file_operations qm_status_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = qm_status_read, +}; + +static void qm_create_debugfs_file(struct hisi_qm *qm, struct dentry *dir, + enum qm_debug_file index) +{ + struct debugfs_file *file = qm->debug.files + index; + + file->index = index; + mutex_init(&file->lock); + file->debug = &qm->debug; + + debugfs_create_file(qm_debug_file_name[index], 0600, dir, file, + &qm_debug_fops); +} + +static int qm_debugfs_atomic64_set(void *data, u64 val) +{ + if (val) + return -EINVAL; + + atomic64_set((atomic64_t *)data, 0); + + return 0; +} + +static int qm_debugfs_atomic64_get(void *data, u64 *val) +{ + *val = atomic64_read((atomic64_t *)data); + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(qm_atomic64_ops, qm_debugfs_atomic64_get, + qm_debugfs_atomic64_set, "%llu\n"); + +/** + * hisi_qm_debug_init() - Initialize qm related debugfs files. + * @qm: The qm for which we want to add debugfs files. + * + * Create qm related debugfs files. + */ +void hisi_qm_debug_init(struct hisi_qm *qm) +{ + struct dfx_diff_registers *qm_regs = qm->debug.qm_diff_regs; + struct qm_dev_dfx *dev_dfx = &qm->debug.dev_dfx; + struct qm_dfx *dfx = &qm->debug.dfx; + struct dentry *qm_d; + void *data; + int i; + + qm_d = debugfs_create_dir("qm", qm->debug.debug_root); + qm->debug.qm_d = qm_d; + + /* only show this in PF */ + if (qm->fun_type == QM_HW_PF) { + debugfs_create_file("qm_state", 0444, qm->debug.qm_d, + qm, &qm_state_fops); + + qm_create_debugfs_file(qm, qm->debug.debug_root, CURRENT_QM); + for (i = CURRENT_Q; i < DEBUG_FILE_NUM; i++) + qm_create_debugfs_file(qm, qm->debug.qm_d, i); + } + + if (qm_regs) + debugfs_create_file("diff_regs", 0444, qm->debug.qm_d, + qm, &qm_diff_regs_fops); + + if (qm->ver >= QM_HW_V5) + debugfs_create_file("dev_usage", 0444, qm->debug.debug_root, qm, &qm_usage_fops); + + debugfs_create_file("regs", 0444, qm->debug.qm_d, qm, &qm_regs_fops); + + debugfs_create_file("cmd", 0600, qm->debug.qm_d, qm, &qm_cmd_fops); + + debugfs_create_file("status", 0444, qm->debug.qm_d, qm, + &qm_status_fops); + + debugfs_create_u32("dev_state", 0444, qm->debug.qm_d, &dev_dfx->dev_state); + debugfs_create_u32("dev_timeout", 0644, qm->debug.qm_d, &dev_dfx->dev_timeout); + + for (i = 0; i < ARRAY_SIZE(qm_dfx_files); i++) { + data = (atomic64_t *)((uintptr_t)dfx + qm_dfx_files[i].offset); + debugfs_create_file(qm_dfx_files[i].name, + 0644, + qm_d, + data, + &qm_atomic64_ops); + } + + if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps)) + hisi_qm_set_algqos_init(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_debug_init); + +/** + * hisi_qm_debug_regs_clear() - clear qm debug related registers. + * @qm: The qm for which we want to clear its debug registers. + */ +void hisi_qm_debug_regs_clear(struct hisi_qm *qm) +{ + const struct debugfs_reg32 *regs; + int i; + + /* clear current_qm */ + writel(0x0, qm->io_base + QM_DFX_MB_CNT_VF); + writel(0x0, qm->io_base + QM_DFX_DB_CNT_VF); + + /* clear current_q */ + writel(0x0, qm->io_base + QM_DFX_SQE_CNT_VF_SQN); + writel(0x0, qm->io_base + QM_DFX_CQE_CNT_VF_CQN); + + /* + * these registers are reading and clearing, so clear them after + * reading them. + */ + writel(0x1, qm->io_base + QM_DFX_CNT_CLR_CE); + + regs = qm_dfx_regs; + for (i = 0; i < CNT_CYC_REGS_NUM; i++) { + readl(qm->io_base + regs->offset); + regs++; + } + + /* clear clear_enable */ + writel(0x0, qm->io_base + QM_DFX_CNT_CLR_CE); +} +EXPORT_SYMBOL_GPL(hisi_qm_debug_regs_clear); diff --git a/drivers/crypto/hisilicon/hpre/Makefile b/drivers/crypto/hisilicon/hpre/Makefile new file mode 100644 index 000000000..4fd32b789 --- /dev/null +++ b/drivers/crypto/hisilicon/hpre/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_CRYPTO_DEV_HISI_HPRE) += hisi_hpre.o +hisi_hpre-objs = hpre_main.o hpre_crypto.o diff --git a/drivers/crypto/hisilicon/hpre/hpre.h b/drivers/crypto/hisilicon/hpre/hpre.h new file mode 100644 index 000000000..021dbd9a1 --- /dev/null +++ b/drivers/crypto/hisilicon/hpre/hpre.h @@ -0,0 +1,129 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2019 HiSilicon Limited. */ +#ifndef __HISI_HPRE_H +#define __HISI_HPRE_H + +#include <linux/list.h> +#include <linux/hisi_acc_qm.h> + +#define HPRE_SQE_SIZE sizeof(struct hpre_sqe) +#define HPRE_PF_DEF_Q_NUM 64 +#define HPRE_PF_DEF_Q_BASE 0 + +/* + * type used in qm sqc DW6. + * 0 - Algorithm which has been supported in V2, like RSA, DH and so on; + * 1 - ECC algorithm in V3. + */ +#define HPRE_V2_ALG_TYPE 0 +#define HPRE_V3_ECC_ALG_TYPE 1 + +enum { + HPRE_CLUSTER0, + HPRE_CLUSTER1, + HPRE_CLUSTER2, + HPRE_CLUSTER3, + HPRE_CLUSTERS_NUM_MAX +}; + +enum hpre_ctrl_dbgfs_file { + HPRE_CLEAR_ENABLE, + HPRE_CLUSTER_CTRL, + HPRE_DEBUG_FILE_NUM, +}; + +enum hpre_dfx_dbgfs_file { + HPRE_SEND_CNT, + HPRE_RECV_CNT, + HPRE_SEND_FAIL_CNT, + HPRE_SEND_BUSY_CNT, + HPRE_OVER_THRHLD_CNT, + HPRE_OVERTIME_THRHLD, + HPRE_INVALID_REQ_CNT, + HPRE_DFX_FILE_NUM +}; + +#define HPRE_DEBUGFS_FILE_NUM (HPRE_DEBUG_FILE_NUM + HPRE_CLUSTERS_NUM_MAX - 1) + +struct hpre_debugfs_file { + int index; + enum hpre_ctrl_dbgfs_file type; + spinlock_t lock; + struct hpre_debug *debug; +}; + +struct hpre_dfx { + atomic64_t value; + enum hpre_dfx_dbgfs_file type; +}; + +/* + * One HPRE controller has one PF and multiple VFs, some global configurations + * which PF has need this structure. + * Just relevant for PF. + */ +struct hpre_debug { + struct hpre_dfx dfx[HPRE_DFX_FILE_NUM]; + struct hpre_debugfs_file files[HPRE_DEBUGFS_FILE_NUM]; +}; + +struct hpre { + struct hisi_qm qm; + struct hpre_debug debug; + unsigned long status; +}; + +enum hpre_alg_type { + HPRE_ALG_NC_NCRT = 0x0, + HPRE_ALG_NC_CRT = 0x1, + HPRE_ALG_KG_STD = 0x2, + HPRE_ALG_KG_CRT = 0x3, + HPRE_ALG_DH_G2 = 0x4, + HPRE_ALG_DH = 0x5, + HPRE_ALG_ECC_MUL = 0xD, + /* shared by x25519 and x448, but x448 is not supported now */ + HPRE_ALG_CURVE25519_MUL = 0x10, +}; + +struct hpre_sqe { + __le32 dw0; + __u8 task_len1; + __u8 task_len2; + __u8 mrttest_num; + __u8 resv1; + __le64 key; + __le64 in; + __le64 out; + __le64 tag; +#define _HPRE_SQE_ALIGN_EXT 6 + __le32 rsvd1[_HPRE_SQE_ALIGN_EXT]; +}; + +enum hpre_cap_table_type { + QM_RAS_NFE_TYPE = 0x0, + QM_RAS_NFE_RESET, + QM_RAS_CE_TYPE, + HPRE_RAS_NFE_TYPE, + HPRE_RAS_NFE_RESET, + HPRE_RAS_CE_TYPE, + HPRE_CORE_INFO, + HPRE_CORE_EN, + HPRE_DRV_ALG_BITMAP, + HPRE_ALG_BITMAP, + HPRE_CORE1_BITMAP_CAP, + HPRE_CORE2_BITMAP_CAP, + HPRE_CORE3_BITMAP_CAP, + HPRE_CORE4_BITMAP_CAP, + HPRE_CORE5_BITMAP_CAP, + HPRE_CORE6_BITMAP_CAP, + HPRE_CORE7_BITMAP_CAP, + HPRE_CORE8_BITMAP_CAP, + HPRE_CORE9_BITMAP_CAP, + HPRE_CORE10_BITMAP_CAP, +}; + +struct hisi_qp *hpre_create_qp(u8 type); +int hpre_algs_register(struct hisi_qm *qm); +void hpre_algs_unregister(struct hisi_qm *qm); +bool hpre_check_alg_support(struct hisi_qm *qm, u32 alg); +#endif diff --git a/drivers/crypto/hisilicon/hpre/hpre_crypto.c b/drivers/crypto/hisilicon/hpre/hpre_crypto.c new file mode 100644 index 000000000..09077abbf --- /dev/null +++ b/drivers/crypto/hisilicon/hpre/hpre_crypto.c @@ -0,0 +1,1897 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 HiSilicon Limited. */ +#include <crypto/akcipher.h> +#include <crypto/dh.h> +#include <crypto/ecc_curve.h> +#include <crypto/ecdh.h> +#include <crypto/rng.h> +#include <crypto/internal/akcipher.h> +#include <crypto/internal/kpp.h> +#include <crypto/internal/rsa.h> +#include <crypto/kpp.h> +#include <crypto/scatterwalk.h> +#include <linux/dma-mapping.h> +#include <linux/fips.h> +#include <linux/module.h> +#include <linux/time.h> +#include "hpre.h" + +struct hpre_ctx; + +#define HPRE_CRYPTO_ALG_PRI 1000 +#define HPRE_ALIGN_SZ 64 +#define HPRE_BITS_2_BYTES_SHIFT 3 +#define HPRE_RSA_512BITS_KSZ 64 +#define HPRE_RSA_1536BITS_KSZ 192 +#define HPRE_CRT_PRMS 5 +#define HPRE_CRT_Q 2 +#define HPRE_CRT_P 3 +#define HPRE_CRT_INV 4 +#define HPRE_DH_G_FLAG 0x02 +#define HPRE_TRY_SEND_TIMES 100 +#define HPRE_INVLD_REQ_ID (-1) + +#define HPRE_SQE_ALG_BITS 5 +#define HPRE_SQE_DONE_SHIFT 30 +#define HPRE_DH_MAX_P_SZ 512 + +#define HPRE_DFX_SEC_TO_US 1000000 +#define HPRE_DFX_US_TO_NS 1000 + +#define HPRE_ENABLE_HPCORE_SHIFT 7 + +/* due to nist p521 */ +#define HPRE_ECC_MAX_KSZ 66 + +/* size in bytes of the n prime */ +#define HPRE_ECC_NIST_P192_N_SIZE 24 +#define HPRE_ECC_NIST_P256_N_SIZE 32 +#define HPRE_ECC_NIST_P384_N_SIZE 48 + +/* size in bytes */ +#define HPRE_ECC_HW256_KSZ_B 32 +#define HPRE_ECC_HW384_KSZ_B 48 + +/* capability register mask of driver */ +#define HPRE_DRV_RSA_MASK_CAP BIT(0) +#define HPRE_DRV_DH_MASK_CAP BIT(1) +#define HPRE_DRV_ECDH_MASK_CAP BIT(2) +#define HPRE_DRV_X25519_MASK_CAP BIT(5) + +static DEFINE_MUTEX(hpre_algs_lock); +static unsigned int hpre_available_devs; + +typedef void (*hpre_cb)(struct hpre_ctx *ctx, void *sqe); + +struct hpre_rsa_ctx { + /* low address: e--->n */ + char *pubkey; + dma_addr_t dma_pubkey; + + /* low address: d--->n */ + char *prikey; + dma_addr_t dma_prikey; + + /* low address: dq->dp->q->p->qinv */ + char *crt_prikey; + dma_addr_t dma_crt_prikey; + + struct crypto_akcipher *soft_tfm; +}; + +struct hpre_dh_ctx { + /* + * If base is g we compute the public key + * ya = g^xa mod p; [RFC2631 sec 2.1.1] + * else if base if the counterpart public key we + * compute the shared secret + * ZZ = yb^xa mod p; [RFC2631 sec 2.1.1] + * low address: d--->n, please refer to Hisilicon HPRE UM + */ + char *xa_p; + dma_addr_t dma_xa_p; + + char *g; /* m */ + dma_addr_t dma_g; + struct crypto_kpp *soft_tfm; +}; + +struct hpre_ecdh_ctx { + /* low address: p->a->k->b */ + unsigned char *p; + dma_addr_t dma_p; + + /* low address: x->y */ + unsigned char *g; + dma_addr_t dma_g; + struct crypto_kpp *soft_tfm; +}; + +struct hpre_ctx { + struct hisi_qp *qp; + struct device *dev; + struct hpre *hpre; + unsigned int key_sz; + bool crt_g2_mode; + union { + struct hpre_rsa_ctx rsa; + struct hpre_dh_ctx dh; + struct hpre_ecdh_ctx ecdh; + }; + /* for ecc algorithms */ + unsigned int curve_id; + /* for high performance core */ + u8 enable_hpcore; + bool fallback; +}; + +struct hpre_asym_request { + char *src; + char *dst; + struct hpre_sqe req; + struct hpre_ctx *ctx; + union { + struct akcipher_request *rsa; + struct kpp_request *dh; + struct kpp_request *ecdh; + } areq; + int err; + hpre_cb cb; + struct timespec64 req_time; +}; + +static inline unsigned int hpre_align_sz(void) +{ + return ((crypto_dma_align() - 1) | (HPRE_ALIGN_SZ - 1)) + 1; +} + +static inline unsigned int hpre_align_pd(void) +{ + return (hpre_align_sz() - 1) & ~(crypto_tfm_ctx_alignment() - 1); +} + +static void hpre_dfx_add_req_time(struct hpre_asym_request *hpre_req) +{ + struct hpre_ctx *ctx = hpre_req->ctx; + struct hpre_dfx *dfx = ctx->hpre->debug.dfx; + + if (atomic64_read(&dfx[HPRE_OVERTIME_THRHLD].value)) + ktime_get_ts64(&hpre_req->req_time); +} + +static int hpre_get_data_dma_addr(struct hpre_asym_request *hpre_req, + struct scatterlist *data, unsigned int len, + int is_src, dma_addr_t *tmp) +{ + struct device *dev = hpre_req->ctx->dev; + enum dma_data_direction dma_dir; + + if (is_src) { + hpre_req->src = NULL; + dma_dir = DMA_TO_DEVICE; + } else { + hpre_req->dst = NULL; + dma_dir = DMA_FROM_DEVICE; + } + *tmp = dma_map_single(dev, sg_virt(data), len, dma_dir); + if (unlikely(dma_mapping_error(dev, *tmp))) { + dev_err(dev, "dma map data err!\n"); + return -ENOMEM; + } + + return 0; +} + +static int hpre_prepare_dma_buf(struct hpre_asym_request *hpre_req, + struct scatterlist *data, unsigned int len, + int is_src, dma_addr_t *tmp) +{ + struct hpre_ctx *ctx = hpre_req->ctx; + struct device *dev = ctx->dev; + void *ptr; + int shift; + + shift = ctx->key_sz - len; + if (unlikely(shift < 0)) + return -EINVAL; + + ptr = dma_alloc_coherent(dev, ctx->key_sz, tmp, GFP_ATOMIC); + if (unlikely(!ptr)) + return -ENOMEM; + + if (is_src) { + scatterwalk_map_and_copy(ptr + shift, data, 0, len, 0); + hpre_req->src = ptr; + } else { + hpre_req->dst = ptr; + } + + return 0; +} + +static int hpre_hw_data_init(struct hpre_asym_request *hpre_req, + struct scatterlist *data, unsigned int len, + int is_src, int is_dh) +{ + struct hpre_sqe *msg = &hpre_req->req; + struct hpre_ctx *ctx = hpre_req->ctx; + dma_addr_t tmp = 0; + int ret; + + /* when the data is dh's source, we should format it */ + if ((sg_is_last(data) && len == ctx->key_sz) && + ((is_dh && !is_src) || !is_dh)) + ret = hpre_get_data_dma_addr(hpre_req, data, len, is_src, &tmp); + else + ret = hpre_prepare_dma_buf(hpre_req, data, len, is_src, &tmp); + + if (unlikely(ret)) + return ret; + + if (is_src) + msg->in = cpu_to_le64(tmp); + else + msg->out = cpu_to_le64(tmp); + + return 0; +} + +static void hpre_hw_data_clr_all(struct hpre_ctx *ctx, + struct hpre_asym_request *req, + struct scatterlist *dst, + struct scatterlist *src) +{ + struct device *dev = ctx->dev; + struct hpre_sqe *sqe = &req->req; + dma_addr_t tmp; + + tmp = le64_to_cpu(sqe->in); + if (unlikely(dma_mapping_error(dev, tmp))) + return; + + if (src) { + if (req->src) + dma_free_coherent(dev, ctx->key_sz, req->src, tmp); + else + dma_unmap_single(dev, tmp, ctx->key_sz, DMA_TO_DEVICE); + } + + tmp = le64_to_cpu(sqe->out); + if (unlikely(dma_mapping_error(dev, tmp))) + return; + + if (req->dst) { + if (dst) + scatterwalk_map_and_copy(req->dst, dst, 0, + ctx->key_sz, 1); + dma_free_coherent(dev, ctx->key_sz, req->dst, tmp); + } else { + dma_unmap_single(dev, tmp, ctx->key_sz, DMA_FROM_DEVICE); + } +} + +static int hpre_alg_res_post_hf(struct hpre_ctx *ctx, struct hpre_sqe *sqe, + void **kreq) +{ + unsigned int err, done, alg; + +#define HPRE_NO_HW_ERR 0 +#define HPRE_HW_TASK_DONE 3 +#define HREE_HW_ERR_MASK GENMASK(10, 0) +#define HREE_SQE_DONE_MASK GENMASK(1, 0) +#define HREE_ALG_TYPE_MASK GENMASK(4, 0) + *kreq = (void *)le64_to_cpu(sqe->tag); + + err = (le32_to_cpu(sqe->dw0) >> HPRE_SQE_ALG_BITS) & + HREE_HW_ERR_MASK; + done = (le32_to_cpu(sqe->dw0) >> HPRE_SQE_DONE_SHIFT) & + HREE_SQE_DONE_MASK; + if (likely(err == HPRE_NO_HW_ERR && done == HPRE_HW_TASK_DONE)) + return 0; + + alg = le32_to_cpu(sqe->dw0) & HREE_ALG_TYPE_MASK; + dev_err_ratelimited(ctx->dev, "alg[0x%x] error: done[0x%x], etype[0x%x]\n", + alg, done, err); + + return -EINVAL; +} + +static void hpre_ctx_clear(struct hpre_ctx *ctx, bool is_clear_all) +{ + if (is_clear_all) + hisi_qm_free_qps(&ctx->qp, 1); + + ctx->crt_g2_mode = false; + ctx->key_sz = 0; +} + +static bool hpre_is_bd_timeout(struct hpre_asym_request *req, + u64 overtime_thrhld) +{ + struct timespec64 reply_time; + u64 time_use_us; + + ktime_get_ts64(&reply_time); + time_use_us = (reply_time.tv_sec - req->req_time.tv_sec) * + HPRE_DFX_SEC_TO_US + + (reply_time.tv_nsec - req->req_time.tv_nsec) / + HPRE_DFX_US_TO_NS; + + if (time_use_us <= overtime_thrhld) + return false; + + return true; +} + +static void hpre_dh_cb(struct hpre_ctx *ctx, void *resp) +{ + struct hpre_dfx *dfx = ctx->hpre->debug.dfx; + struct hpre_asym_request *req; + struct kpp_request *areq; + u64 overtime_thrhld; + int ret; + + ret = hpre_alg_res_post_hf(ctx, resp, (void **)&req); + areq = req->areq.dh; + areq->dst_len = ctx->key_sz; + + overtime_thrhld = atomic64_read(&dfx[HPRE_OVERTIME_THRHLD].value); + if (overtime_thrhld && hpre_is_bd_timeout(req, overtime_thrhld)) + atomic64_inc(&dfx[HPRE_OVER_THRHLD_CNT].value); + + hpre_hw_data_clr_all(ctx, req, areq->dst, areq->src); + kpp_request_complete(areq, ret); + atomic64_inc(&dfx[HPRE_RECV_CNT].value); +} + +static void hpre_rsa_cb(struct hpre_ctx *ctx, void *resp) +{ + struct hpre_dfx *dfx = ctx->hpre->debug.dfx; + struct hpre_asym_request *req; + struct akcipher_request *areq; + u64 overtime_thrhld; + int ret; + + ret = hpre_alg_res_post_hf(ctx, resp, (void **)&req); + + overtime_thrhld = atomic64_read(&dfx[HPRE_OVERTIME_THRHLD].value); + if (overtime_thrhld && hpre_is_bd_timeout(req, overtime_thrhld)) + atomic64_inc(&dfx[HPRE_OVER_THRHLD_CNT].value); + + areq = req->areq.rsa; + areq->dst_len = ctx->key_sz; + hpre_hw_data_clr_all(ctx, req, areq->dst, areq->src); + akcipher_request_complete(areq, ret); + atomic64_inc(&dfx[HPRE_RECV_CNT].value); +} + +static void hpre_alg_cb(struct hisi_qp *qp, void *resp) +{ + struct hpre_asym_request *h_req; + struct hpre_sqe *sqe = resp; + + h_req = (struct hpre_asym_request *)le64_to_cpu(sqe->tag); + if (unlikely(!h_req)) { + pr_err("Failed to get request, and qp_id is %u\n", qp->qp_id); + return; + } + + h_req->cb(h_req->ctx, resp); +} + +static int hpre_ctx_init(struct hpre_ctx *ctx, u8 type) +{ + struct hisi_qp *qp; + struct hpre *hpre; + + qp = hpre_create_qp(type); + if (!qp) { + ctx->qp = NULL; + return -ENODEV; + } + + qp->req_cb = hpre_alg_cb; + ctx->qp = qp; + ctx->dev = &qp->qm->pdev->dev; + hpre = container_of(ctx->qp->qm, struct hpre, qm); + ctx->hpre = hpre; + ctx->key_sz = 0; + ctx->crt_g2_mode = false; + + return 0; +} + +static int hpre_msg_request_set(struct hpre_ctx *ctx, void *req, bool is_rsa) +{ + struct hpre_asym_request *h_req; + struct hpre_sqe *msg; + void *tmp; + + if (is_rsa) { + struct akcipher_request *akreq = req; + + if (akreq->dst_len < ctx->key_sz) { + akreq->dst_len = ctx->key_sz; + return -EOVERFLOW; + } + + tmp = akcipher_request_ctx(akreq); + h_req = PTR_ALIGN(tmp, hpre_align_sz()); + h_req->cb = hpre_rsa_cb; + h_req->areq.rsa = akreq; + msg = &h_req->req; + memset(msg, 0, sizeof(*msg)); + } else { + struct kpp_request *kreq = req; + + if (kreq->dst_len < ctx->key_sz) { + kreq->dst_len = ctx->key_sz; + return -EOVERFLOW; + } + + tmp = kpp_request_ctx(kreq); + h_req = PTR_ALIGN(tmp, hpre_align_sz()); + h_req->cb = hpre_dh_cb; + h_req->areq.dh = kreq; + msg = &h_req->req; + memset(msg, 0, sizeof(*msg)); + msg->key = cpu_to_le64(ctx->dh.dma_xa_p); + } + + msg->in = cpu_to_le64(DMA_MAPPING_ERROR); + msg->out = cpu_to_le64(DMA_MAPPING_ERROR); + msg->dw0 |= cpu_to_le32(0x1 << HPRE_SQE_DONE_SHIFT); + msg->task_len1 = (ctx->key_sz >> HPRE_BITS_2_BYTES_SHIFT) - 1; + h_req->ctx = ctx; + + hpre_dfx_add_req_time(h_req); + msg->tag = cpu_to_le64((uintptr_t)h_req); + + return 0; +} + +static int hpre_send(struct hpre_ctx *ctx, struct hpre_sqe *msg) +{ + struct hpre_dfx *dfx = ctx->hpre->debug.dfx; + int ctr = 0; + int ret; + + do { + atomic64_inc(&dfx[HPRE_SEND_CNT].value); + ret = hisi_qp_send(ctx->qp, msg); + if (ret != -EBUSY) + break; + atomic64_inc(&dfx[HPRE_SEND_BUSY_CNT].value); + } while (ctr++ < HPRE_TRY_SEND_TIMES); + + if (likely(!ret)) + return ret; + + if (ret != -EBUSY) + atomic64_inc(&dfx[HPRE_SEND_FAIL_CNT].value); + + return ret; +} + +static int hpre_dh_compute_value(struct kpp_request *req) +{ + struct crypto_kpp *tfm = crypto_kpp_reqtfm(req); + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + void *tmp = kpp_request_ctx(req); + struct hpre_asym_request *hpre_req = PTR_ALIGN(tmp, hpre_align_sz()); + struct hpre_sqe *msg = &hpre_req->req; + int ret; + + ret = hpre_msg_request_set(ctx, req, false); + if (unlikely(ret)) + return ret; + + if (req->src) { + ret = hpre_hw_data_init(hpre_req, req->src, req->src_len, 1, 1); + if (unlikely(ret)) + goto clear_all; + } else { + msg->in = cpu_to_le64(ctx->dh.dma_g); + } + + ret = hpre_hw_data_init(hpre_req, req->dst, req->dst_len, 0, 1); + if (unlikely(ret)) + goto clear_all; + + if (ctx->crt_g2_mode && !req->src) + msg->dw0 = cpu_to_le32(le32_to_cpu(msg->dw0) | HPRE_ALG_DH_G2); + else + msg->dw0 = cpu_to_le32(le32_to_cpu(msg->dw0) | HPRE_ALG_DH); + + /* success */ + ret = hpre_send(ctx, msg); + if (likely(!ret)) + return -EINPROGRESS; + +clear_all: + hpre_hw_data_clr_all(ctx, hpre_req, req->dst, req->src); + + return ret; +} + +static struct kpp_request *hpre_dh_prepare_fb_req(struct kpp_request *req) +{ + struct kpp_request *fb_req = kpp_request_ctx(req); + struct crypto_kpp *tfm = crypto_kpp_reqtfm(req); + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + + kpp_request_set_tfm(fb_req, ctx->dh.soft_tfm); + kpp_request_set_callback(fb_req, req->base.flags, req->base.complete, req->base.data); + kpp_request_set_input(fb_req, req->src, req->src_len); + kpp_request_set_output(fb_req, req->dst, req->dst_len); + + return fb_req; +} + +static int hpre_dh_generate_public_key(struct kpp_request *req) +{ + struct crypto_kpp *tfm = crypto_kpp_reqtfm(req); + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + struct kpp_request *fb_req; + + if (ctx->fallback) { + fb_req = hpre_dh_prepare_fb_req(req); + return crypto_kpp_generate_public_key(fb_req); + } + + return hpre_dh_compute_value(req); +} + +static int hpre_dh_compute_shared_secret(struct kpp_request *req) +{ + struct crypto_kpp *tfm = crypto_kpp_reqtfm(req); + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + struct kpp_request *fb_req; + + if (ctx->fallback) { + fb_req = hpre_dh_prepare_fb_req(req); + return crypto_kpp_compute_shared_secret(fb_req); + } + + return hpre_dh_compute_value(req); +} + +static int hpre_is_dh_params_length_valid(unsigned int key_sz) +{ +#define _HPRE_DH_GRP1 768 +#define _HPRE_DH_GRP2 1024 +#define _HPRE_DH_GRP5 1536 +#define _HPRE_DH_GRP14 2048 +#define _HPRE_DH_GRP15 3072 +#define _HPRE_DH_GRP16 4096 + switch (key_sz) { + case _HPRE_DH_GRP1: + case _HPRE_DH_GRP2: + case _HPRE_DH_GRP5: + case _HPRE_DH_GRP14: + case _HPRE_DH_GRP15: + case _HPRE_DH_GRP16: + return 0; + default: + return -EINVAL; + } +} + +static int hpre_dh_set_params(struct hpre_ctx *ctx, struct dh *params) +{ + struct device *dev = ctx->dev; + unsigned int sz; + + sz = ctx->key_sz = params->p_size; + ctx->dh.xa_p = dma_alloc_coherent(dev, sz << 1, + &ctx->dh.dma_xa_p, GFP_KERNEL); + if (!ctx->dh.xa_p) + return -ENOMEM; + + memcpy(ctx->dh.xa_p + sz, params->p, sz); + + /* If g equals 2 don't copy it */ + if (params->g_size == 1 && *(char *)params->g == HPRE_DH_G_FLAG) { + ctx->crt_g2_mode = true; + return 0; + } + + ctx->dh.g = dma_alloc_coherent(dev, sz, &ctx->dh.dma_g, GFP_KERNEL); + if (!ctx->dh.g) { + dma_free_coherent(dev, sz << 1, ctx->dh.xa_p, + ctx->dh.dma_xa_p); + ctx->dh.xa_p = NULL; + return -ENOMEM; + } + + memcpy(ctx->dh.g + (sz - params->g_size), params->g, params->g_size); + + return 0; +} + +static void hpre_dh_clear_ctx(struct hpre_ctx *ctx, bool is_clear_all) +{ + struct device *dev = ctx->dev; + unsigned int sz = ctx->key_sz; + + if (!ctx->qp) + return; + + if (ctx->dh.g) { + dma_free_coherent(dev, sz, ctx->dh.g, ctx->dh.dma_g); + ctx->dh.g = NULL; + } + + if (ctx->dh.xa_p) { + memzero_explicit(ctx->dh.xa_p, sz); + dma_free_coherent(dev, sz << 1, ctx->dh.xa_p, + ctx->dh.dma_xa_p); + ctx->dh.xa_p = NULL; + } + + hpre_ctx_clear(ctx, is_clear_all); +} + +static int hpre_dh_set_secret(struct crypto_kpp *tfm, const void *buf, + unsigned int len) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + struct dh params; + int ret; + + if (crypto_dh_decode_key(buf, len, ¶ms) < 0) + return -EINVAL; + + if (!ctx->qp) + goto set_soft_secret; + + if (hpre_is_dh_params_length_valid(params.p_size << + HPRE_BITS_2_BYTES_SHIFT)) + goto set_soft_secret; + + /* Free old secret if any */ + hpre_dh_clear_ctx(ctx, false); + + ret = hpre_dh_set_params(ctx, ¶ms); + if (ret < 0) + goto err_clear_ctx; + + memcpy(ctx->dh.xa_p + (ctx->key_sz - params.key_size), params.key, + params.key_size); + + ctx->fallback = false; + return 0; + +err_clear_ctx: + hpre_dh_clear_ctx(ctx, false); + return ret; +set_soft_secret: + ctx->fallback = true; + return crypto_kpp_set_secret(ctx->dh.soft_tfm, buf, len); +} + +static unsigned int hpre_dh_max_size(struct crypto_kpp *tfm) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + + if (ctx->fallback) + return crypto_kpp_maxsize(ctx->dh.soft_tfm); + + return ctx->key_sz; +} + +static int hpre_dh_init_tfm(struct crypto_kpp *tfm) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + const char *alg = kpp_alg_name(tfm); + unsigned int reqsize; + int ret; + + ctx->dh.soft_tfm = crypto_alloc_kpp(alg, 0, CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(ctx->dh.soft_tfm)) { + pr_err("Failed to alloc dh tfm!\n"); + return PTR_ERR(ctx->dh.soft_tfm); + } + + crypto_kpp_set_flags(ctx->dh.soft_tfm, crypto_kpp_get_flags(tfm)); + + reqsize = max(sizeof(struct hpre_asym_request) + hpre_align_pd(), + sizeof(struct kpp_request) + crypto_kpp_reqsize(ctx->dh.soft_tfm)); + kpp_set_reqsize(tfm, reqsize); + + ret = hpre_ctx_init(ctx, HPRE_V2_ALG_TYPE); + if (ret && ret != -ENODEV) { + crypto_free_kpp(ctx->dh.soft_tfm); + return ret; + } else if (ret == -ENODEV) { + ctx->fallback = true; + } + + return 0; +} + +static void hpre_dh_exit_tfm(struct crypto_kpp *tfm) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + + hpre_dh_clear_ctx(ctx, true); + crypto_free_kpp(ctx->dh.soft_tfm); +} + +static void hpre_rsa_drop_leading_zeros(const char **ptr, size_t *len) +{ + while (!**ptr && *len) { + (*ptr)++; + (*len)--; + } +} + +static bool hpre_rsa_key_size_is_support(unsigned int len) +{ + unsigned int bits = len << HPRE_BITS_2_BYTES_SHIFT; + +#define _RSA_1024BITS_KEY_WDTH 1024 +#define _RSA_2048BITS_KEY_WDTH 2048 +#define _RSA_3072BITS_KEY_WDTH 3072 +#define _RSA_4096BITS_KEY_WDTH 4096 + + switch (bits) { + case _RSA_1024BITS_KEY_WDTH: + case _RSA_2048BITS_KEY_WDTH: + case _RSA_3072BITS_KEY_WDTH: + case _RSA_4096BITS_KEY_WDTH: + return true; + default: + return false; + } +} + +static int hpre_rsa_enc(struct akcipher_request *req) +{ + struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); + struct hpre_ctx *ctx = akcipher_tfm_ctx(tfm); + void *tmp = akcipher_request_ctx(req); + struct hpre_asym_request *hpre_req = PTR_ALIGN(tmp, hpre_align_sz()); + struct hpre_sqe *msg = &hpre_req->req; + int ret; + + /* For unsupported key size and unavailable devices, use soft tfm instead */ + if (ctx->fallback) { + akcipher_request_set_tfm(req, ctx->rsa.soft_tfm); + ret = crypto_akcipher_encrypt(req); + akcipher_request_set_tfm(req, tfm); + return ret; + } + + if (unlikely(!ctx->rsa.pubkey)) + return -EINVAL; + + ret = hpre_msg_request_set(ctx, req, true); + if (unlikely(ret)) + return ret; + + msg->dw0 |= cpu_to_le32(HPRE_ALG_NC_NCRT); + msg->key = cpu_to_le64(ctx->rsa.dma_pubkey); + + ret = hpre_hw_data_init(hpre_req, req->src, req->src_len, 1, 0); + if (unlikely(ret)) + goto clear_all; + + ret = hpre_hw_data_init(hpre_req, req->dst, req->dst_len, 0, 0); + if (unlikely(ret)) + goto clear_all; + + /* success */ + ret = hpre_send(ctx, msg); + if (likely(!ret)) + return -EINPROGRESS; + +clear_all: + hpre_hw_data_clr_all(ctx, hpre_req, req->dst, req->src); + + return ret; +} + +static int hpre_rsa_dec(struct akcipher_request *req) +{ + struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); + struct hpre_ctx *ctx = akcipher_tfm_ctx(tfm); + void *tmp = akcipher_request_ctx(req); + struct hpre_asym_request *hpre_req = PTR_ALIGN(tmp, hpre_align_sz()); + struct hpre_sqe *msg = &hpre_req->req; + int ret; + + /* For unsupported key size and unavailable devices, use soft tfm instead */ + if (ctx->fallback) { + akcipher_request_set_tfm(req, ctx->rsa.soft_tfm); + ret = crypto_akcipher_decrypt(req); + akcipher_request_set_tfm(req, tfm); + return ret; + } + + if (unlikely(!ctx->rsa.prikey)) + return -EINVAL; + + ret = hpre_msg_request_set(ctx, req, true); + if (unlikely(ret)) + return ret; + + if (ctx->crt_g2_mode) { + msg->key = cpu_to_le64(ctx->rsa.dma_crt_prikey); + msg->dw0 = cpu_to_le32(le32_to_cpu(msg->dw0) | + HPRE_ALG_NC_CRT); + } else { + msg->key = cpu_to_le64(ctx->rsa.dma_prikey); + msg->dw0 = cpu_to_le32(le32_to_cpu(msg->dw0) | + HPRE_ALG_NC_NCRT); + } + + ret = hpre_hw_data_init(hpre_req, req->src, req->src_len, 1, 0); + if (unlikely(ret)) + goto clear_all; + + ret = hpre_hw_data_init(hpre_req, req->dst, req->dst_len, 0, 0); + if (unlikely(ret)) + goto clear_all; + + /* success */ + ret = hpre_send(ctx, msg); + if (likely(!ret)) + return -EINPROGRESS; + +clear_all: + hpre_hw_data_clr_all(ctx, hpre_req, req->dst, req->src); + + return ret; +} + +static int hpre_rsa_set_n(struct hpre_ctx *ctx, const char *value, + size_t vlen, bool private) +{ + const char *ptr = value; + + hpre_rsa_drop_leading_zeros(&ptr, &vlen); + + ctx->key_sz = vlen; + + /* if invalid key size provided, we use software tfm */ + if (!hpre_rsa_key_size_is_support(ctx->key_sz)) { + ctx->fallback = true; + return 0; + } + + ctx->rsa.pubkey = dma_alloc_coherent(ctx->dev, vlen << 1, + &ctx->rsa.dma_pubkey, + GFP_KERNEL); + if (!ctx->rsa.pubkey) + return -ENOMEM; + + if (private) { + ctx->rsa.prikey = dma_alloc_coherent(ctx->dev, vlen << 1, + &ctx->rsa.dma_prikey, + GFP_KERNEL); + if (!ctx->rsa.prikey) { + dma_free_coherent(ctx->dev, vlen << 1, + ctx->rsa.pubkey, + ctx->rsa.dma_pubkey); + ctx->rsa.pubkey = NULL; + return -ENOMEM; + } + memcpy(ctx->rsa.prikey + vlen, ptr, vlen); + } + memcpy(ctx->rsa.pubkey + vlen, ptr, vlen); + + /* Using hardware HPRE to do RSA */ + return 1; +} + +static int hpre_rsa_set_e(struct hpre_ctx *ctx, const char *value, + size_t vlen) +{ + const char *ptr = value; + + hpre_rsa_drop_leading_zeros(&ptr, &vlen); + + if (!ctx->key_sz || !vlen || vlen > ctx->key_sz) + return -EINVAL; + + memcpy(ctx->rsa.pubkey + ctx->key_sz - vlen, ptr, vlen); + + return 0; +} + +static int hpre_rsa_set_d(struct hpre_ctx *ctx, const char *value, + size_t vlen) +{ + const char *ptr = value; + + hpre_rsa_drop_leading_zeros(&ptr, &vlen); + + if (!ctx->key_sz || !vlen || vlen > ctx->key_sz) + return -EINVAL; + + memcpy(ctx->rsa.prikey + ctx->key_sz - vlen, ptr, vlen); + + return 0; +} + +static int hpre_crt_para_get(char *para, size_t para_sz, + const char *raw, size_t raw_sz) +{ + const char *ptr = raw; + size_t len = raw_sz; + + hpre_rsa_drop_leading_zeros(&ptr, &len); + if (!len || len > para_sz) + return -EINVAL; + + memcpy(para + para_sz - len, ptr, len); + + return 0; +} + +static int hpre_rsa_setkey_crt(struct hpre_ctx *ctx, struct rsa_key *rsa_key) +{ + unsigned int hlf_ksz = ctx->key_sz >> 1; + struct device *dev = ctx->dev; + u64 offset; + int ret; + + ctx->rsa.crt_prikey = dma_alloc_coherent(dev, hlf_ksz * HPRE_CRT_PRMS, + &ctx->rsa.dma_crt_prikey, + GFP_KERNEL); + if (!ctx->rsa.crt_prikey) + return -ENOMEM; + + ret = hpre_crt_para_get(ctx->rsa.crt_prikey, hlf_ksz, + rsa_key->dq, rsa_key->dq_sz); + if (ret) + goto free_key; + + offset = hlf_ksz; + ret = hpre_crt_para_get(ctx->rsa.crt_prikey + offset, hlf_ksz, + rsa_key->dp, rsa_key->dp_sz); + if (ret) + goto free_key; + + offset = hlf_ksz * HPRE_CRT_Q; + ret = hpre_crt_para_get(ctx->rsa.crt_prikey + offset, hlf_ksz, + rsa_key->q, rsa_key->q_sz); + if (ret) + goto free_key; + + offset = hlf_ksz * HPRE_CRT_P; + ret = hpre_crt_para_get(ctx->rsa.crt_prikey + offset, hlf_ksz, + rsa_key->p, rsa_key->p_sz); + if (ret) + goto free_key; + + offset = hlf_ksz * HPRE_CRT_INV; + ret = hpre_crt_para_get(ctx->rsa.crt_prikey + offset, hlf_ksz, + rsa_key->qinv, rsa_key->qinv_sz); + if (ret) + goto free_key; + + ctx->crt_g2_mode = true; + + return 0; + +free_key: + offset = hlf_ksz * HPRE_CRT_PRMS; + memzero_explicit(ctx->rsa.crt_prikey, offset); + dma_free_coherent(dev, hlf_ksz * HPRE_CRT_PRMS, ctx->rsa.crt_prikey, + ctx->rsa.dma_crt_prikey); + ctx->rsa.crt_prikey = NULL; + ctx->crt_g2_mode = false; + + return ret; +} + +/* If it is clear all, all the resources of the QP will be cleaned. */ +static void hpre_rsa_clear_ctx(struct hpre_ctx *ctx, bool is_clear_all) +{ + unsigned int half_key_sz = ctx->key_sz >> 1; + struct device *dev = ctx->dev; + + if (!ctx->qp) + return; + + if (ctx->rsa.pubkey) { + dma_free_coherent(dev, ctx->key_sz << 1, + ctx->rsa.pubkey, ctx->rsa.dma_pubkey); + ctx->rsa.pubkey = NULL; + } + + if (ctx->rsa.crt_prikey) { + memzero_explicit(ctx->rsa.crt_prikey, + half_key_sz * HPRE_CRT_PRMS); + dma_free_coherent(dev, half_key_sz * HPRE_CRT_PRMS, + ctx->rsa.crt_prikey, ctx->rsa.dma_crt_prikey); + ctx->rsa.crt_prikey = NULL; + } + + if (ctx->rsa.prikey) { + memzero_explicit(ctx->rsa.prikey, ctx->key_sz); + dma_free_coherent(dev, ctx->key_sz << 1, ctx->rsa.prikey, + ctx->rsa.dma_prikey); + ctx->rsa.prikey = NULL; + } + + hpre_ctx_clear(ctx, is_clear_all); +} + +/* + * we should judge if it is CRT or not, + * CRT: return true, N-CRT: return false . + */ +static bool hpre_is_crt_key(struct rsa_key *key) +{ + u16 len = key->p_sz + key->q_sz + key->dp_sz + key->dq_sz + + key->qinv_sz; + +#define LEN_OF_NCRT_PARA 5 + + /* N-CRT less than 5 parameters */ + return len > LEN_OF_NCRT_PARA; +} + +static int hpre_rsa_setkey(struct hpre_ctx *ctx, const void *key, + unsigned int keylen, bool private) +{ + struct rsa_key rsa_key; + int ret; + + hpre_rsa_clear_ctx(ctx, false); + + if (private) + ret = rsa_parse_priv_key(&rsa_key, key, keylen); + else + ret = rsa_parse_pub_key(&rsa_key, key, keylen); + if (ret < 0) + return ret; + + ret = hpre_rsa_set_n(ctx, rsa_key.n, rsa_key.n_sz, private); + if (ret <= 0) + return ret; + + if (private) { + ret = hpre_rsa_set_d(ctx, rsa_key.d, rsa_key.d_sz); + if (ret < 0) + goto free; + + if (hpre_is_crt_key(&rsa_key)) { + ret = hpre_rsa_setkey_crt(ctx, &rsa_key); + if (ret < 0) + goto free; + } + } + + ret = hpre_rsa_set_e(ctx, rsa_key.e, rsa_key.e_sz); + if (ret < 0) + goto free; + + if ((private && !ctx->rsa.prikey) || !ctx->rsa.pubkey) { + ret = -EINVAL; + goto free; + } + + ctx->fallback = false; + return 0; + +free: + hpre_rsa_clear_ctx(ctx, false); + return ret; +} + +static int hpre_rsa_setpubkey(struct crypto_akcipher *tfm, const void *key, + unsigned int keylen) +{ + struct hpre_ctx *ctx = akcipher_tfm_ctx(tfm); + int ret; + + ret = crypto_akcipher_set_pub_key(ctx->rsa.soft_tfm, key, keylen); + if (ret) + return ret; + + if (!ctx->qp) + return 0; + + return hpre_rsa_setkey(ctx, key, keylen, false); +} + +static int hpre_rsa_setprivkey(struct crypto_akcipher *tfm, const void *key, + unsigned int keylen) +{ + struct hpre_ctx *ctx = akcipher_tfm_ctx(tfm); + int ret; + + ret = crypto_akcipher_set_priv_key(ctx->rsa.soft_tfm, key, keylen); + if (ret) + return ret; + + if (!ctx->qp) + return 0; + + return hpre_rsa_setkey(ctx, key, keylen, true); +} + +static unsigned int hpre_rsa_max_size(struct crypto_akcipher *tfm) +{ + struct hpre_ctx *ctx = akcipher_tfm_ctx(tfm); + + /* For unsupported key size and unavailable devices, use soft tfm instead */ + if (ctx->fallback) + return crypto_akcipher_maxsize(ctx->rsa.soft_tfm); + + return ctx->key_sz; +} + +static int hpre_rsa_init_tfm(struct crypto_akcipher *tfm) +{ + struct hpre_ctx *ctx = akcipher_tfm_ctx(tfm); + int ret; + + ctx->rsa.soft_tfm = crypto_alloc_akcipher("rsa-generic", 0, 0); + if (IS_ERR(ctx->rsa.soft_tfm)) { + pr_err("Can not alloc_akcipher!\n"); + return PTR_ERR(ctx->rsa.soft_tfm); + } + + akcipher_set_reqsize(tfm, sizeof(struct hpre_asym_request) + + hpre_align_pd()); + + ret = hpre_ctx_init(ctx, HPRE_V2_ALG_TYPE); + if (ret && ret != -ENODEV) { + crypto_free_akcipher(ctx->rsa.soft_tfm); + return ret; + } else if (ret == -ENODEV) { + ctx->fallback = true; + } + + return 0; +} + +static void hpre_rsa_exit_tfm(struct crypto_akcipher *tfm) +{ + struct hpre_ctx *ctx = akcipher_tfm_ctx(tfm); + + hpre_rsa_clear_ctx(ctx, true); + crypto_free_akcipher(ctx->rsa.soft_tfm); +} + +static void hpre_key_to_big_end(u8 *data, int len) +{ + int i, j; + + for (i = 0; i < len / 2; i++) { + j = len - i - 1; + swap(data[j], data[i]); + } +} + +static void hpre_ecc_clear_ctx(struct hpre_ctx *ctx, bool is_clear_all) +{ + struct device *dev = ctx->dev; + unsigned int sz = ctx->key_sz; + unsigned int shift = sz << 1; + + if (ctx->ecdh.p) { + /* ecdh: p->a->k->b */ + memzero_explicit(ctx->ecdh.p + shift, sz); + dma_free_coherent(dev, sz << 3, ctx->ecdh.p, ctx->ecdh.dma_p); + ctx->ecdh.p = NULL; + } + + hpre_ctx_clear(ctx, is_clear_all); +} + +/* + * The bits of 192/224/256/384/521 are supported by HPRE, + * and convert the bits like: + * bits<=256, bits=256; 256<bits<=384, bits=384; 384<bits<=576, bits=576; + * If the parameter bit width is insufficient, then we fill in the + * high-order zeros by soft, so TASK_LENGTH1 is 0x3/0x5/0x8; + */ +static unsigned int hpre_ecdh_supported_curve(unsigned short id) +{ + switch (id) { + case ECC_CURVE_NIST_P192: + case ECC_CURVE_NIST_P256: + return HPRE_ECC_HW256_KSZ_B; + case ECC_CURVE_NIST_P384: + return HPRE_ECC_HW384_KSZ_B; + default: + break; + } + + return 0; +} + +static void fill_curve_param(void *addr, u64 *param, unsigned int cur_sz, u8 ndigits) +{ + unsigned int sz = cur_sz - (ndigits - 1) * sizeof(u64); + u8 i = 0; + + while (i < ndigits - 1) { + memcpy(addr + sizeof(u64) * i, ¶m[i], sizeof(u64)); + i++; + } + + memcpy(addr + sizeof(u64) * i, ¶m[ndigits - 1], sz); + hpre_key_to_big_end((u8 *)addr, cur_sz); +} + +static int hpre_ecdh_fill_curve(struct hpre_ctx *ctx, struct ecdh *params, + unsigned int cur_sz) +{ + unsigned int shifta = ctx->key_sz << 1; + unsigned int shiftb = ctx->key_sz << 2; + void *p = ctx->ecdh.p + ctx->key_sz - cur_sz; + void *a = ctx->ecdh.p + shifta - cur_sz; + void *b = ctx->ecdh.p + shiftb - cur_sz; + void *x = ctx->ecdh.g + ctx->key_sz - cur_sz; + void *y = ctx->ecdh.g + shifta - cur_sz; + const struct ecc_curve *curve = ecc_get_curve(ctx->curve_id); + char *n; + + if (unlikely(!curve)) + return -EINVAL; + + n = kzalloc(ctx->key_sz, GFP_KERNEL); + if (!n) + return -ENOMEM; + + fill_curve_param(p, curve->p, cur_sz, curve->g.ndigits); + fill_curve_param(a, curve->a, cur_sz, curve->g.ndigits); + fill_curve_param(b, curve->b, cur_sz, curve->g.ndigits); + fill_curve_param(x, curve->g.x, cur_sz, curve->g.ndigits); + fill_curve_param(y, curve->g.y, cur_sz, curve->g.ndigits); + fill_curve_param(n, curve->n, cur_sz, curve->g.ndigits); + + if (params->key_size == cur_sz && memcmp(params->key, n, cur_sz) >= 0) { + kfree(n); + return -EINVAL; + } + + kfree(n); + return 0; +} + +static unsigned int hpre_ecdh_get_curvesz(unsigned short id) +{ + switch (id) { + case ECC_CURVE_NIST_P192: + return HPRE_ECC_NIST_P192_N_SIZE; + case ECC_CURVE_NIST_P256: + return HPRE_ECC_NIST_P256_N_SIZE; + case ECC_CURVE_NIST_P384: + return HPRE_ECC_NIST_P384_N_SIZE; + default: + break; + } + + return 0; +} + +static int hpre_ecdh_set_param(struct hpre_ctx *ctx, struct ecdh *params) +{ + struct device *dev = ctx->dev; + unsigned int sz, shift, curve_sz; + int ret; + + ctx->key_sz = hpre_ecdh_supported_curve(ctx->curve_id); + if (!ctx->key_sz) + return -EINVAL; + + curve_sz = hpre_ecdh_get_curvesz(ctx->curve_id); + if (!curve_sz || params->key_size > curve_sz) + return -EINVAL; + + sz = ctx->key_sz; + + if (!ctx->ecdh.p) { + ctx->ecdh.p = dma_alloc_coherent(dev, sz << 3, &ctx->ecdh.dma_p, + GFP_KERNEL); + if (!ctx->ecdh.p) + return -ENOMEM; + } + + shift = sz << 2; + ctx->ecdh.g = ctx->ecdh.p + shift; + ctx->ecdh.dma_g = ctx->ecdh.dma_p + shift; + + ret = hpre_ecdh_fill_curve(ctx, params, curve_sz); + if (ret) { + dev_err(dev, "failed to fill curve_param, ret = %d!\n", ret); + dma_free_coherent(dev, sz << 3, ctx->ecdh.p, ctx->ecdh.dma_p); + ctx->ecdh.p = NULL; + return ret; + } + + return 0; +} + +static bool hpre_key_is_zero(const char *key, unsigned short key_sz) +{ + int i; + + for (i = 0; i < key_sz; i++) + if (key[i]) + return false; + + return true; +} + +static int ecdh_gen_privkey(struct hpre_ctx *ctx, struct ecdh *params) +{ + struct device *dev = ctx->dev; + int ret; + + ret = crypto_stdrng_get_bytes(params->key, params->key_size); + if (ret) + dev_err(dev, "failed to get random bytes, ret = %d!\n", ret); + + return ret; +} + +static int hpre_ecdh_set_secret(struct crypto_kpp *tfm, const void *buf, + unsigned int len) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + unsigned int sz, sz_shift, curve_sz; + struct device *dev = ctx->dev; + char key[HPRE_ECC_MAX_KSZ]; + struct ecdh params; + int ret; + + if (ctx->fallback) + return crypto_kpp_set_secret(ctx->ecdh.soft_tfm, buf, len); + + if (crypto_ecdh_decode_key(buf, len, ¶ms) < 0) { + dev_err(dev, "failed to decode ecdh key!\n"); + return -EINVAL; + } + + /* Use stdrng to generate private key */ + if (!params.key || !params.key_size) { + params.key = key; + curve_sz = hpre_ecdh_get_curvesz(ctx->curve_id); + if (!curve_sz) { + dev_err(dev, "Invalid curve size!\n"); + return -EINVAL; + } + + params.key_size = curve_sz - 1; + ret = ecdh_gen_privkey(ctx, ¶ms); + if (ret) + return ret; + } + + if (hpre_key_is_zero(params.key, params.key_size)) { + dev_err(dev, "Invalid hpre key!\n"); + return -EINVAL; + } + + hpre_ecc_clear_ctx(ctx, false); + + ret = hpre_ecdh_set_param(ctx, ¶ms); + if (ret < 0) { + dev_err(dev, "failed to set hpre param, ret = %d!\n", ret); + return ret; + } + + sz = ctx->key_sz; + sz_shift = (sz << 1) + sz - params.key_size; + memcpy(ctx->ecdh.p + sz_shift, params.key, params.key_size); + + return 0; +} + +static void hpre_ecdh_hw_data_clr_all(struct hpre_ctx *ctx, + struct hpre_asym_request *req, + struct scatterlist *dst, + struct scatterlist *src) +{ + struct device *dev = ctx->dev; + struct hpre_sqe *sqe = &req->req; + dma_addr_t dma; + + dma = le64_to_cpu(sqe->in); + if (unlikely(dma_mapping_error(dev, dma))) + return; + + if (src && req->src) + dma_free_coherent(dev, ctx->key_sz << 2, req->src, dma); + + dma = le64_to_cpu(sqe->out); + if (unlikely(dma_mapping_error(dev, dma))) + return; + + if (req->dst) + dma_free_coherent(dev, ctx->key_sz << 1, req->dst, dma); + if (dst) + dma_unmap_single(dev, dma, ctx->key_sz << 1, DMA_FROM_DEVICE); +} + +static void hpre_ecdh_cb(struct hpre_ctx *ctx, void *resp) +{ + unsigned int curve_sz = hpre_ecdh_get_curvesz(ctx->curve_id); + struct hpre_dfx *dfx = ctx->hpre->debug.dfx; + struct hpre_asym_request *req = NULL; + struct kpp_request *areq; + u64 overtime_thrhld; + char *p; + int ret; + + ret = hpre_alg_res_post_hf(ctx, resp, (void **)&req); + areq = req->areq.ecdh; + areq->dst_len = ctx->key_sz << 1; + + overtime_thrhld = atomic64_read(&dfx[HPRE_OVERTIME_THRHLD].value); + if (overtime_thrhld && hpre_is_bd_timeout(req, overtime_thrhld)) + atomic64_inc(&dfx[HPRE_OVER_THRHLD_CNT].value); + + /* Do unmap before data processing */ + hpre_ecdh_hw_data_clr_all(ctx, req, areq->dst, areq->src); + + p = sg_virt(areq->dst); + memmove(p, p + ctx->key_sz - curve_sz, curve_sz); + memmove(p + curve_sz, p + areq->dst_len - curve_sz, curve_sz); + + kpp_request_complete(areq, ret); + + atomic64_inc(&dfx[HPRE_RECV_CNT].value); +} + +static int hpre_ecdh_msg_request_set(struct hpre_ctx *ctx, + struct kpp_request *req) +{ + struct hpre_asym_request *h_req; + struct hpre_sqe *msg; + void *tmp; + + if (req->dst_len < ctx->key_sz << 1) { + req->dst_len = ctx->key_sz << 1; + return -EINVAL; + } + + tmp = kpp_request_ctx(req); + h_req = PTR_ALIGN(tmp, hpre_align_sz()); + h_req->cb = hpre_ecdh_cb; + h_req->areq.ecdh = req; + msg = &h_req->req; + memset(msg, 0, sizeof(*msg)); + msg->in = cpu_to_le64(DMA_MAPPING_ERROR); + msg->out = cpu_to_le64(DMA_MAPPING_ERROR); + msg->key = cpu_to_le64(ctx->ecdh.dma_p); + + msg->dw0 |= cpu_to_le32(0x1U << HPRE_SQE_DONE_SHIFT); + msg->task_len1 = (ctx->key_sz >> HPRE_BITS_2_BYTES_SHIFT) - 1; + h_req->ctx = ctx; + + hpre_dfx_add_req_time(h_req); + msg->tag = cpu_to_le64((uintptr_t)h_req); + return 0; +} + +static int hpre_ecdh_src_data_init(struct hpre_asym_request *hpre_req, + struct scatterlist *data, unsigned int len) +{ + struct hpre_sqe *msg = &hpre_req->req; + struct hpre_ctx *ctx = hpre_req->ctx; + struct device *dev = ctx->dev; + unsigned int tmpshift; + dma_addr_t dma = 0; + void *ptr; + int shift; + + /* Src_data include gx and gy. */ + shift = ctx->key_sz - (len >> 1); + if (unlikely(shift < 0)) + return -EINVAL; + + ptr = dma_alloc_coherent(dev, ctx->key_sz << 2, &dma, GFP_KERNEL); + if (unlikely(!ptr)) + return -ENOMEM; + + tmpshift = ctx->key_sz << 1; + scatterwalk_map_and_copy(ptr + tmpshift, data, 0, len, 0); + memcpy(ptr + shift, ptr + tmpshift, len >> 1); + memcpy(ptr + ctx->key_sz + shift, ptr + tmpshift + (len >> 1), len >> 1); + + hpre_req->src = ptr; + msg->in = cpu_to_le64(dma); + return 0; +} + +static int hpre_ecdh_dst_data_init(struct hpre_asym_request *hpre_req, + struct scatterlist *data, unsigned int len) +{ + struct hpre_sqe *msg = &hpre_req->req; + struct hpre_ctx *ctx = hpre_req->ctx; + struct device *dev = ctx->dev; + dma_addr_t dma; + + if (unlikely(!data || !sg_is_last(data) || len != ctx->key_sz << 1)) { + dev_err(dev, "data or data length is illegal!\n"); + return -EINVAL; + } + + hpre_req->dst = NULL; + dma = dma_map_single(dev, sg_virt(data), len, DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(dev, dma))) { + dev_err(dev, "dma map data err!\n"); + return -ENOMEM; + } + + msg->out = cpu_to_le64(dma); + return 0; +} + +static int hpre_ecdh_compute_value(struct kpp_request *req) +{ + struct crypto_kpp *tfm = crypto_kpp_reqtfm(req); + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + struct device *dev = ctx->dev; + void *tmp = kpp_request_ctx(req); + struct hpre_asym_request *hpre_req = PTR_ALIGN(tmp, hpre_align_sz()); + struct hpre_sqe *msg = &hpre_req->req; + int ret; + + ret = hpre_ecdh_msg_request_set(ctx, req); + if (unlikely(ret)) { + dev_err(dev, "failed to set ecdh request, ret = %d!\n", ret); + return ret; + } + + if (req->src) { + ret = hpre_ecdh_src_data_init(hpre_req, req->src, req->src_len); + if (unlikely(ret)) { + dev_err(dev, "failed to init src data, ret = %d!\n", ret); + goto clear_all; + } + } else { + msg->in = cpu_to_le64(ctx->ecdh.dma_g); + } + + ret = hpre_ecdh_dst_data_init(hpre_req, req->dst, req->dst_len); + if (unlikely(ret)) { + dev_err(dev, "failed to init dst data, ret = %d!\n", ret); + goto clear_all; + } + + msg->dw0 = cpu_to_le32(le32_to_cpu(msg->dw0) | HPRE_ALG_ECC_MUL); + msg->resv1 = ctx->enable_hpcore << HPRE_ENABLE_HPCORE_SHIFT; + + ret = hpre_send(ctx, msg); + if (likely(!ret)) + return -EINPROGRESS; + +clear_all: + hpre_ecdh_hw_data_clr_all(ctx, hpre_req, req->dst, req->src); + return ret; +} + +static int hpre_ecdh_generate_public_key(struct kpp_request *req) +{ + struct crypto_kpp *tfm = crypto_kpp_reqtfm(req); + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + int ret; + + if (ctx->fallback) { + kpp_request_set_tfm(req, ctx->ecdh.soft_tfm); + ret = crypto_kpp_generate_public_key(req); + kpp_request_set_tfm(req, tfm); + return ret; + } + + return hpre_ecdh_compute_value(req); +} + +static int hpre_ecdh_compute_shared_secret(struct kpp_request *req) +{ + struct crypto_kpp *tfm = crypto_kpp_reqtfm(req); + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + int ret; + + if (ctx->fallback) { + kpp_request_set_tfm(req, ctx->ecdh.soft_tfm); + ret = crypto_kpp_compute_shared_secret(req); + kpp_request_set_tfm(req, tfm); + return ret; + } + + return hpre_ecdh_compute_value(req); +} + +static unsigned int hpre_ecdh_max_size(struct crypto_kpp *tfm) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + + if (ctx->fallback) + return crypto_kpp_maxsize(ctx->ecdh.soft_tfm); + + /* max size is the pub_key_size, include x and y */ + return ctx->key_sz << 1; +} + +static int hpre_ecdh_init_tfm(struct crypto_kpp *tfm) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + const char *alg = kpp_alg_name(tfm); + int ret; + + ret = hpre_ctx_init(ctx, HPRE_V3_ECC_ALG_TYPE); + if (!ret) { + kpp_set_reqsize(tfm, sizeof(struct hpre_asym_request) + hpre_align_pd()); + return 0; + } else if (ret && ret != -ENODEV) { + return ret; + } + + ctx->ecdh.soft_tfm = crypto_alloc_kpp(alg, 0, CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(ctx->ecdh.soft_tfm)) { + pr_err("Failed to alloc %s tfm!\n", alg); + return PTR_ERR(ctx->ecdh.soft_tfm); + } + + crypto_kpp_set_flags(ctx->ecdh.soft_tfm, crypto_kpp_get_flags(tfm)); + ctx->fallback = true; + + return 0; +} + +static int hpre_ecdh_nist_p192_init_tfm(struct crypto_kpp *tfm) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + + ctx->curve_id = ECC_CURVE_NIST_P192; + + return hpre_ecdh_init_tfm(tfm); +} + +static int hpre_ecdh_nist_p256_init_tfm(struct crypto_kpp *tfm) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + + ctx->curve_id = ECC_CURVE_NIST_P256; + ctx->enable_hpcore = 1; + + return hpre_ecdh_init_tfm(tfm); +} + +static int hpre_ecdh_nist_p384_init_tfm(struct crypto_kpp *tfm) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + + ctx->curve_id = ECC_CURVE_NIST_P384; + + return hpre_ecdh_init_tfm(tfm); +} + +static void hpre_ecdh_exit_tfm(struct crypto_kpp *tfm) +{ + struct hpre_ctx *ctx = kpp_tfm_ctx(tfm); + + if (ctx->fallback) { + crypto_free_kpp(ctx->ecdh.soft_tfm); + return; + } + + hpre_ecc_clear_ctx(ctx, true); +} + +static struct akcipher_alg rsa = { + .encrypt = hpre_rsa_enc, + .decrypt = hpre_rsa_dec, + .set_pub_key = hpre_rsa_setpubkey, + .set_priv_key = hpre_rsa_setprivkey, + .max_size = hpre_rsa_max_size, + .init = hpre_rsa_init_tfm, + .exit = hpre_rsa_exit_tfm, + .base = { + .cra_ctxsize = sizeof(struct hpre_ctx), + .cra_priority = HPRE_CRYPTO_ALG_PRI, + .cra_name = "rsa", + .cra_driver_name = "hpre-rsa", + .cra_module = THIS_MODULE, + .cra_flags = CRYPTO_ALG_NEED_FALLBACK, + }, +}; + +static struct kpp_alg dh = { + .set_secret = hpre_dh_set_secret, + .generate_public_key = hpre_dh_generate_public_key, + .compute_shared_secret = hpre_dh_compute_shared_secret, + .max_size = hpre_dh_max_size, + .init = hpre_dh_init_tfm, + .exit = hpre_dh_exit_tfm, + .base = { + .cra_ctxsize = sizeof(struct hpre_ctx), + .cra_priority = HPRE_CRYPTO_ALG_PRI, + .cra_name = "dh", + .cra_driver_name = "hpre-dh", + .cra_module = THIS_MODULE, + .cra_flags = CRYPTO_ALG_NEED_FALLBACK, + }, +}; + +static struct kpp_alg ecdh_curves[] = { + { + .set_secret = hpre_ecdh_set_secret, + .generate_public_key = hpre_ecdh_generate_public_key, + .compute_shared_secret = hpre_ecdh_compute_shared_secret, + .max_size = hpre_ecdh_max_size, + .init = hpre_ecdh_nist_p192_init_tfm, + .exit = hpre_ecdh_exit_tfm, + .base = { + .cra_ctxsize = sizeof(struct hpre_ctx), + .cra_priority = HPRE_CRYPTO_ALG_PRI, + .cra_name = "ecdh-nist-p192", + .cra_driver_name = "hpre-ecdh-nist-p192", + .cra_module = THIS_MODULE, + .cra_flags = CRYPTO_ALG_NEED_FALLBACK, + }, + }, { + .set_secret = hpre_ecdh_set_secret, + .generate_public_key = hpre_ecdh_generate_public_key, + .compute_shared_secret = hpre_ecdh_compute_shared_secret, + .max_size = hpre_ecdh_max_size, + .init = hpre_ecdh_nist_p256_init_tfm, + .exit = hpre_ecdh_exit_tfm, + .base = { + .cra_ctxsize = sizeof(struct hpre_ctx), + .cra_priority = HPRE_CRYPTO_ALG_PRI, + .cra_name = "ecdh-nist-p256", + .cra_driver_name = "hpre-ecdh-nist-p256", + .cra_module = THIS_MODULE, + .cra_flags = CRYPTO_ALG_NEED_FALLBACK, + }, + }, { + .set_secret = hpre_ecdh_set_secret, + .generate_public_key = hpre_ecdh_generate_public_key, + .compute_shared_secret = hpre_ecdh_compute_shared_secret, + .max_size = hpre_ecdh_max_size, + .init = hpre_ecdh_nist_p384_init_tfm, + .exit = hpre_ecdh_exit_tfm, + .base = { + .cra_ctxsize = sizeof(struct hpre_ctx), + .cra_priority = HPRE_CRYPTO_ALG_PRI, + .cra_name = "ecdh-nist-p384", + .cra_driver_name = "hpre-ecdh-nist-p384", + .cra_module = THIS_MODULE, + .cra_flags = CRYPTO_ALG_NEED_FALLBACK, + }, + } +}; + +static int hpre_register_rsa(struct hisi_qm *qm) +{ + int ret; + + if (!hpre_check_alg_support(qm, HPRE_DRV_RSA_MASK_CAP)) + return 0; + + rsa.base.cra_flags = 0; + ret = crypto_register_akcipher(&rsa); + if (ret) + dev_err(&qm->pdev->dev, "failed to register rsa (%d)!\n", ret); + + return ret; +} + +static void hpre_unregister_rsa(struct hisi_qm *qm) +{ + if (!hpre_check_alg_support(qm, HPRE_DRV_RSA_MASK_CAP)) + return; + + crypto_unregister_akcipher(&rsa); +} + +static int hpre_register_dh(struct hisi_qm *qm) +{ + int ret; + + if (!hpre_check_alg_support(qm, HPRE_DRV_DH_MASK_CAP)) + return 0; + + ret = crypto_register_kpp(&dh); + if (ret) + dev_err(&qm->pdev->dev, "failed to register dh (%d)!\n", ret); + + return ret; +} + +static void hpre_unregister_dh(struct hisi_qm *qm) +{ + if (!hpre_check_alg_support(qm, HPRE_DRV_DH_MASK_CAP)) + return; + + crypto_unregister_kpp(&dh); +} + +static int hpre_register_ecdh(struct hisi_qm *qm) +{ + int ret, i; + + if (!hpre_check_alg_support(qm, HPRE_DRV_ECDH_MASK_CAP)) + return 0; + + for (i = 0; i < ARRAY_SIZE(ecdh_curves); i++) { + ret = crypto_register_kpp(&ecdh_curves[i]); + if (ret) { + dev_err(&qm->pdev->dev, "failed to register %s (%d)!\n", + ecdh_curves[i].base.cra_name, ret); + goto unreg_kpp; + } + } + + return 0; + +unreg_kpp: + for (--i; i >= 0; --i) + crypto_unregister_kpp(&ecdh_curves[i]); + + return ret; +} + +static void hpre_unregister_ecdh(struct hisi_qm *qm) +{ + int i; + + if (!hpre_check_alg_support(qm, HPRE_DRV_ECDH_MASK_CAP)) + return; + + for (i = ARRAY_SIZE(ecdh_curves) - 1; i >= 0; --i) + crypto_unregister_kpp(&ecdh_curves[i]); +} + +int hpre_algs_register(struct hisi_qm *qm) +{ + int ret = 0; + + mutex_lock(&hpre_algs_lock); + if (hpre_available_devs) { + hpre_available_devs++; + goto unlock; + } + + ret = hpre_register_rsa(qm); + if (ret) + goto unlock; + + ret = hpre_register_dh(qm); + if (ret) + goto unreg_rsa; + + ret = hpre_register_ecdh(qm); + if (ret) + goto unreg_dh; + + hpre_available_devs++; + mutex_unlock(&hpre_algs_lock); + + return ret; + +unreg_dh: + hpre_unregister_dh(qm); +unreg_rsa: + hpre_unregister_rsa(qm); +unlock: + mutex_unlock(&hpre_algs_lock); + return ret; +} + +void hpre_algs_unregister(struct hisi_qm *qm) +{ + mutex_lock(&hpre_algs_lock); + if (--hpre_available_devs) + goto unlock; + + hpre_unregister_ecdh(qm); + hpre_unregister_dh(qm); + hpre_unregister_rsa(qm); + +unlock: + mutex_unlock(&hpre_algs_lock); +} diff --git a/drivers/crypto/hisilicon/hpre/hpre_main.c b/drivers/crypto/hisilicon/hpre/hpre_main.c new file mode 100644 index 000000000..b6903fce6 --- /dev/null +++ b/drivers/crypto/hisilicon/hpre/hpre_main.c @@ -0,0 +1,1754 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2018-2019 HiSilicon Limited. */ +#include <linux/acpi.h> +#include <linux/bitops.h> +#include <linux/debugfs.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/pm_runtime.h> +#include <linux/topology.h> +#include <linux/uacce.h> +#include "hpre.h" + +#define CAP_FILE_PERMISSION 0444 +#define HPRE_CTRL_CNT_CLR_CE_BIT BIT(0) +#define HPRE_CTRL_CNT_CLR_CE 0x301000 +#define HPRE_FSM_MAX_CNT 0x301008 +#define HPRE_VFG_AXQOS 0x30100c +#define HPRE_VFG_AXCACHE 0x301010 +#define HPRE_RDCHN_INI_CFG 0x301014 +#define HPRE_AWUSR_FP_CFG 0x301018 +#define HPRE_BD_ENDIAN 0x301020 +#define HPRE_ECC_BYPASS 0x301024 +#define HPRE_RAS_WIDTH_CFG 0x301028 +#define HPRE_POISON_BYPASS 0x30102c +#define HPRE_BD_ARUSR_CFG 0x301030 +#define HPRE_BD_AWUSR_CFG 0x301034 +#define HPRE_TYPES_ENB 0x301038 +#define HPRE_RSA_ENB BIT(0) +#define HPRE_ECC_ENB BIT(1) +#define HPRE_DATA_RUSER_CFG 0x30103c +#define HPRE_DATA_WUSER_CFG 0x301040 +#define HPRE_INT_MASK 0x301400 +#define HPRE_INT_STATUS 0x301800 +#define HPRE_HAC_INT_MSK 0x301400 +#define HPRE_HAC_RAS_CE_ENB 0x301410 +#define HPRE_HAC_RAS_NFE_ENB 0x301414 +#define HPRE_HAC_RAS_FE_ENB 0x301418 +#define HPRE_HAC_INT_SET 0x301500 +#define HPRE_AXI_ERROR_MASK GENMASK(21, 10) +#define HPRE_RNG_TIMEOUT_NUM 0x301A34 +#define HPRE_CORE_INT_ENABLE 0 +#define HPRE_RDCHN_INI_ST 0x301a00 +#define HPRE_CLSTR_BASE 0x302000 +#define HPRE_CORE_EN_OFFSET 0x04 +#define HPRE_CORE_INI_CFG_OFFSET 0x20 +#define HPRE_CORE_INI_STATUS_OFFSET 0x80 +#define HPRE_CORE_HTBT_WARN_OFFSET 0x8c +#define HPRE_CORE_IS_SCHD_OFFSET 0x90 + +#define HPRE_RAS_CE_ENB 0x301410 +#define HPRE_RAS_NFE_ENB 0x301414 +#define HPRE_RAS_FE_ENB 0x301418 +#define HPRE_OOO_SHUTDOWN_SEL 0x301a3c +#define HPRE_HAC_RAS_FE_ENABLE 0 +#define HPRE_RAS_MASK_ALL GENMASK(31, 0) +#define HPRE_RAS_CLEAR_ALL GENMASK(31, 0) + +#define HPRE_CORE_ENB (HPRE_CLSTR_BASE + HPRE_CORE_EN_OFFSET) +#define HPRE_CORE_INI_CFG (HPRE_CLSTR_BASE + HPRE_CORE_INI_CFG_OFFSET) +#define HPRE_CORE_INI_STATUS (HPRE_CLSTR_BASE + HPRE_CORE_INI_STATUS_OFFSET) +#define HPRE_HAC_ECC1_CNT 0x301a04 +#define HPRE_HAC_ECC2_CNT 0x301a08 +#define HPRE_HAC_SOURCE_INT 0x301600 +#define HPRE_CLSTR_ADDR_INTRVL 0x1000 +#define HPRE_CLUSTER_INQURY 0x100 +#define HPRE_CLSTR_ADDR_INQRY_RSLT 0x104 +#define HPRE_PASID_EN_BIT 9 +#define HPRE_REG_RD_INTVRL_US 10 +#define HPRE_REG_RD_TMOUT_US 1000 +#define HPRE_DBGFS_VAL_MAX_LEN 20 +#define PCI_DEVICE_ID_HUAWEI_HPRE_PF 0xa258 +#define HPRE_QM_USR_CFG_MASK GENMASK(31, 1) +#define HPRE_QM_AXI_CFG_MASK GENMASK(15, 0) +#define HPRE_QM_VFG_AX_MASK GENMASK(7, 0) +#define HPRE_BD_USR_MASK GENMASK(1, 0) +#define HPRE_PREFETCH_CFG 0x301130 +#define HPRE_SVA_PREFTCH_DFX 0x30115C +#define HPRE_PREFETCH_ENABLE (~(BIT(0) | BIT(30))) +#define HPRE_PREFETCH_DISABLE BIT(30) +#define HPRE_SVA_DISABLE_READY (BIT(4) | BIT(8)) +#define HPRE_SVA_PREFTCH_DFX4 0x301144 +#define HPRE_WAIT_SVA_READY 500000 +#define HPRE_READ_SVA_STATUS_TIMES 3 +#define HPRE_WAIT_US_MIN 10 +#define HPRE_WAIT_US_MAX 20 + +/* clock gate */ +#define HPRE_CLKGATE_CTL 0x301a10 +#define HPRE_PEH_CFG_AUTO_GATE 0x301a2c +#define HPRE_CLUSTER_DYN_CTL 0x302010 +#define HPRE_CORE_SHB_CFG 0x302088 +#define HPRE_CLKGATE_CTL_EN BIT(0) +#define HPRE_PEH_CFG_AUTO_GATE_EN BIT(0) +#define HPRE_CLUSTER_DYN_CTL_EN BIT(0) +#define HPRE_CORE_GATE_EN (BIT(30) | BIT(31)) + +#define HPRE_AM_OOO_SHUTDOWN_ENB 0x301044 +#define HPRE_AM_OOO_SHUTDOWN_ENABLE BIT(0) +#define HPRE_WR_MSI_PORT BIT(2) + +#define HPRE_CORE_ECC_2BIT_ERR BIT(1) +#define HPRE_OOO_ECC_2BIT_ERR BIT(5) + +#define HPRE_QM_BME_FLR BIT(7) +#define HPRE_QM_PM_FLR BIT(11) +#define HPRE_QM_SRIOV_FLR BIT(12) + +#define HPRE_SHAPER_TYPE_RATE 640 +#define HPRE_VIA_MSI_DSM 1 +#define HPRE_SQE_MASK_OFFSET 8 +#define HPRE_SQE_MASK_LEN 44 +#define HPRE_CTX_Q_NUM_DEF 1 + +#define HPRE_DFX_BASE 0x301000 +#define HPRE_DFX_COMMON1 0x301400 +#define HPRE_DFX_COMMON2 0x301A00 +#define HPRE_DFX_CORE 0x302000 +#define HPRE_DFX_BASE_LEN 0x55 +#define HPRE_DFX_COMMON1_LEN 0x41 +#define HPRE_DFX_COMMON2_LEN 0xE +#define HPRE_DFX_CORE_LEN 0x43 + +#define HPRE_MAX_CHANNEL_NUM 2 + +static const char hpre_name[] = "hisi_hpre"; +static struct dentry *hpre_debugfs_root; +static const struct pci_device_id hpre_dev_ids[] = { + { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HUAWEI_HPRE_PF) }, + { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HUAWEI_HPRE_VF) }, + { 0, } +}; + +MODULE_DEVICE_TABLE(pci, hpre_dev_ids); + +struct hpre_hw_error { + u32 int_msk; + const char *msg; +}; + +static const struct qm_dev_alg hpre_dev_algs[] = { + { + .alg_msk = BIT(0), + .alg = "rsa\n" + }, { + .alg_msk = BIT(1), + .alg = "dh\n" + }, { + .alg_msk = BIT(2), + .alg = "ecdh\n" + }, { + .alg_msk = BIT(3), + .alg = "ecdsa\n" + }, { + .alg_msk = BIT(4), + .alg = "sm2\n" + }, { + .alg_msk = BIT(5), + .alg = "x25519\n" + }, { + .alg_msk = BIT(6), + .alg = "x448\n" + }, { + /* sentinel */ + } +}; + +static struct hisi_qm_list hpre_devices = { + .register_to_crypto = hpre_algs_register, + .unregister_from_crypto = hpre_algs_unregister, +}; + +static const char * const hpre_debug_file_name[] = { + [HPRE_CLEAR_ENABLE] = "rdclr_en", + [HPRE_CLUSTER_CTRL] = "cluster_ctrl", +}; + +enum hpre_cap_type { + HPRE_QM_NFE_MASK_CAP, + HPRE_QM_RESET_MASK_CAP, + HPRE_QM_OOO_SHUTDOWN_MASK_CAP, + HPRE_QM_CE_MASK_CAP, + HPRE_NFE_MASK_CAP, + HPRE_RESET_MASK_CAP, + HPRE_OOO_SHUTDOWN_MASK_CAP, + HPRE_CE_MASK_CAP, + HPRE_CLUSTER_NUM_CAP, + HPRE_CORE_TYPE_NUM_CAP, + HPRE_CORE_NUM_CAP, + HPRE_CLUSTER_CORE_NUM_CAP, + HPRE_CORE_ENABLE_BITMAP_CAP, + HPRE_DRV_ALG_BITMAP_CAP, + HPRE_DEV_ALG_BITMAP_CAP, + HPRE_CORE1_ALG_BITMAP_CAP, + HPRE_CORE2_ALG_BITMAP_CAP, + HPRE_CORE3_ALG_BITMAP_CAP, + HPRE_CORE4_ALG_BITMAP_CAP, + HPRE_CORE5_ALG_BITMAP_CAP, + HPRE_CORE6_ALG_BITMAP_CAP, + HPRE_CORE7_ALG_BITMAP_CAP, + HPRE_CORE8_ALG_BITMAP_CAP, + HPRE_CORE9_ALG_BITMAP_CAP, + HPRE_CORE10_ALG_BITMAP_CAP +}; + +static const struct hisi_qm_cap_info hpre_basic_info[] = { + {HPRE_QM_NFE_MASK_CAP, 0x3124, 0, GENMASK(31, 0), 0x0, 0x1C37, 0x7C37}, + {HPRE_QM_RESET_MASK_CAP, 0x3128, 0, GENMASK(31, 0), 0x0, 0xC37, 0x6C37}, + {HPRE_QM_OOO_SHUTDOWN_MASK_CAP, 0x3128, 0, GENMASK(31, 0), 0x0, 0x4, 0x6C37}, + {HPRE_QM_CE_MASK_CAP, 0x312C, 0, GENMASK(31, 0), 0x0, 0x8, 0x8}, + {HPRE_NFE_MASK_CAP, 0x3130, 0, GENMASK(31, 0), 0x0, 0x3FFFFE, 0x1FFFC3E}, + {HPRE_RESET_MASK_CAP, 0x3134, 0, GENMASK(31, 0), 0x0, 0x3FFFFE, 0xBFFC3E}, + {HPRE_OOO_SHUTDOWN_MASK_CAP, 0x3134, 0, GENMASK(31, 0), 0x0, 0x22, 0xBFFC3E}, + {HPRE_CE_MASK_CAP, 0x3138, 0, GENMASK(31, 0), 0x0, 0x1, 0x1}, + {HPRE_CLUSTER_NUM_CAP, 0x313c, 20, GENMASK(3, 0), 0x0, 0x4, 0x1}, + {HPRE_CORE_TYPE_NUM_CAP, 0x313c, 16, GENMASK(3, 0), 0x0, 0x2, 0x2}, + {HPRE_CORE_NUM_CAP, 0x313c, 8, GENMASK(7, 0), 0x0, 0x8, 0xA}, + {HPRE_CLUSTER_CORE_NUM_CAP, 0x313c, 0, GENMASK(7, 0), 0x0, 0x2, 0xA}, + {HPRE_CORE_ENABLE_BITMAP_CAP, 0x3140, 0, GENMASK(31, 0), 0x0, 0xF, 0x3FF}, + {HPRE_DRV_ALG_BITMAP_CAP, 0x3144, 0, GENMASK(31, 0), 0x0, 0x03, 0x27}, + {HPRE_DEV_ALG_BITMAP_CAP, 0x3148, 0, GENMASK(31, 0), 0x0, 0x03, 0x7F}, + {HPRE_CORE1_ALG_BITMAP_CAP, 0x314c, 0, GENMASK(31, 0), 0x0, 0x7F, 0x7F}, + {HPRE_CORE2_ALG_BITMAP_CAP, 0x3150, 0, GENMASK(31, 0), 0x0, 0x7F, 0x7F}, + {HPRE_CORE3_ALG_BITMAP_CAP, 0x3154, 0, GENMASK(31, 0), 0x0, 0x7F, 0x7F}, + {HPRE_CORE4_ALG_BITMAP_CAP, 0x3158, 0, GENMASK(31, 0), 0x0, 0x7F, 0x7F}, + {HPRE_CORE5_ALG_BITMAP_CAP, 0x315c, 0, GENMASK(31, 0), 0x0, 0x7F, 0x7F}, + {HPRE_CORE6_ALG_BITMAP_CAP, 0x3160, 0, GENMASK(31, 0), 0x0, 0x7F, 0x7F}, + {HPRE_CORE7_ALG_BITMAP_CAP, 0x3164, 0, GENMASK(31, 0), 0x0, 0x7F, 0x7F}, + {HPRE_CORE8_ALG_BITMAP_CAP, 0x3168, 0, GENMASK(31, 0), 0x0, 0x7F, 0x7F}, + {HPRE_CORE9_ALG_BITMAP_CAP, 0x316c, 0, GENMASK(31, 0), 0x0, 0x10, 0x10}, + {HPRE_CORE10_ALG_BITMAP_CAP, 0x3170, 0, GENMASK(31, 0), 0x0, 0x10, 0x10} +}; + +static const struct hisi_qm_cap_query_info hpre_cap_query_info[] = { + {QM_RAS_NFE_TYPE, "QM_RAS_NFE_TYPE ", 0x3124, 0x0, 0x1C37, 0x7C37}, + {QM_RAS_NFE_RESET, "QM_RAS_NFE_RESET ", 0x3128, 0x0, 0xC77, 0x6C77}, + {QM_RAS_CE_TYPE, "QM_RAS_CE_TYPE ", 0x312C, 0x0, 0x8, 0x8}, + {HPRE_RAS_NFE_TYPE, "HPRE_RAS_NFE_TYPE ", 0x3130, 0x0, 0x3FFFFE, 0x1FFFC3E}, + {HPRE_RAS_NFE_RESET, "HPRE_RAS_NFE_RESET ", 0x3134, 0x0, 0x3FFFFE, 0xBFFC3E}, + {HPRE_RAS_CE_TYPE, "HPRE_RAS_CE_TYPE ", 0x3138, 0x0, 0x1, 0x1}, + {HPRE_CORE_INFO, "HPRE_CORE_INFO ", 0x313c, 0x0, 0x420802, 0x120A0A}, + {HPRE_CORE_EN, "HPRE_CORE_EN ", 0x3140, 0x0, 0xF, 0x3FF}, + {HPRE_DRV_ALG_BITMAP, "HPRE_DRV_ALG_BITMAP ", 0x3144, 0x0, 0x03, 0x27}, + {HPRE_ALG_BITMAP, "HPRE_ALG_BITMAP ", 0x3148, 0x0, 0x03, 0x7F}, + {HPRE_CORE1_BITMAP_CAP, "HPRE_CORE1_BITMAP_CAP ", 0x314c, 0x0, 0x7F, 0x7F}, + {HPRE_CORE2_BITMAP_CAP, "HPRE_CORE2_BITMAP_CAP ", 0x3150, 0x0, 0x7F, 0x7F}, + {HPRE_CORE3_BITMAP_CAP, "HPRE_CORE3_BITMAP_CAP ", 0x3154, 0x0, 0x7F, 0x7F}, + {HPRE_CORE4_BITMAP_CAP, "HPRE_CORE4_BITMAP_CAP ", 0x3158, 0x0, 0x7F, 0x7F}, + {HPRE_CORE5_BITMAP_CAP, "HPRE_CORE5_BITMAP_CAP ", 0x315c, 0x0, 0x7F, 0x7F}, + {HPRE_CORE6_BITMAP_CAP, "HPRE_CORE6_BITMAP_CAP ", 0x3160, 0x0, 0x7F, 0x7F}, + {HPRE_CORE7_BITMAP_CAP, "HPRE_CORE7_BITMAP_CAP ", 0x3164, 0x0, 0x7F, 0x7F}, + {HPRE_CORE8_BITMAP_CAP, "HPRE_CORE8_BITMAP_CAP ", 0x3168, 0x0, 0x7F, 0x7F}, + {HPRE_CORE9_BITMAP_CAP, "HPRE_CORE9_BITMAP_CAP ", 0x316c, 0x0, 0x10, 0x10}, + {HPRE_CORE10_BITMAP_CAP, "HPRE_CORE10_BITMAP_CAP ", 0x3170, 0x0, 0x10, 0x10}, +}; + +static const struct hpre_hw_error hpre_hw_errors[] = { + { + .int_msk = BIT(0), + .msg = "core_ecc_1bit_err_int_set" + }, { + .int_msk = BIT(1), + .msg = "core_ecc_2bit_err_int_set" + }, { + .int_msk = BIT(2), + .msg = "dat_wb_poison_int_set" + }, { + .int_msk = BIT(3), + .msg = "dat_rd_poison_int_set" + }, { + .int_msk = BIT(4), + .msg = "bd_rd_poison_int_set" + }, { + .int_msk = BIT(5), + .msg = "ooo_ecc_2bit_err_int_set" + }, { + .int_msk = BIT(6), + .msg = "cluster1_shb_timeout_int_set" + }, { + .int_msk = BIT(7), + .msg = "cluster2_shb_timeout_int_set" + }, { + .int_msk = BIT(8), + .msg = "cluster3_shb_timeout_int_set" + }, { + .int_msk = BIT(9), + .msg = "cluster4_shb_timeout_int_set" + }, { + .int_msk = GENMASK(15, 10), + .msg = "ooo_rdrsp_err_int_set" + }, { + .int_msk = GENMASK(21, 16), + .msg = "ooo_wrrsp_err_int_set" + }, { + .int_msk = BIT(22), + .msg = "pt_rng_timeout_int_set" + }, { + .int_msk = BIT(23), + .msg = "sva_fsm_timeout_int_set" + }, { + .int_msk = BIT(24), + .msg = "sva_int_set" + }, { + /* sentinel */ + } +}; + +static const u64 hpre_cluster_offsets[] = { + [HPRE_CLUSTER0] = + HPRE_CLSTR_BASE + HPRE_CLUSTER0 * HPRE_CLSTR_ADDR_INTRVL, + [HPRE_CLUSTER1] = + HPRE_CLSTR_BASE + HPRE_CLUSTER1 * HPRE_CLSTR_ADDR_INTRVL, + [HPRE_CLUSTER2] = + HPRE_CLSTR_BASE + HPRE_CLUSTER2 * HPRE_CLSTR_ADDR_INTRVL, + [HPRE_CLUSTER3] = + HPRE_CLSTR_BASE + HPRE_CLUSTER3 * HPRE_CLSTR_ADDR_INTRVL, +}; + +static const struct debugfs_reg32 hpre_cluster_dfx_regs[] = { + {"CORES_EN_STATUS ", HPRE_CORE_EN_OFFSET}, + {"CORES_INI_CFG ", HPRE_CORE_INI_CFG_OFFSET}, + {"CORES_INI_STATUS ", HPRE_CORE_INI_STATUS_OFFSET}, + {"CORES_HTBT_WARN ", HPRE_CORE_HTBT_WARN_OFFSET}, + {"CORES_IS_SCHD ", HPRE_CORE_IS_SCHD_OFFSET}, +}; + +static const struct debugfs_reg32 hpre_com_dfx_regs[] = { + {"READ_CLR_EN ", HPRE_CTRL_CNT_CLR_CE}, + {"AXQOS ", HPRE_VFG_AXQOS}, + {"AWUSR_CFG ", HPRE_AWUSR_FP_CFG}, + {"BD_ENDIAN ", HPRE_BD_ENDIAN}, + {"ECC_CHECK_CTRL ", HPRE_ECC_BYPASS}, + {"RAS_INT_WIDTH ", HPRE_RAS_WIDTH_CFG}, + {"POISON_BYPASS ", HPRE_POISON_BYPASS}, + {"BD_ARUSER ", HPRE_BD_ARUSR_CFG}, + {"BD_AWUSER ", HPRE_BD_AWUSR_CFG}, + {"DATA_ARUSER ", HPRE_DATA_RUSER_CFG}, + {"DATA_AWUSER ", HPRE_DATA_WUSER_CFG}, + {"INT_STATUS ", HPRE_INT_STATUS}, + {"INT_MASK ", HPRE_HAC_INT_MSK}, + {"RAS_CE_ENB ", HPRE_HAC_RAS_CE_ENB}, + {"RAS_NFE_ENB ", HPRE_HAC_RAS_NFE_ENB}, + {"RAS_FE_ENB ", HPRE_HAC_RAS_FE_ENB}, + {"INT_SET ", HPRE_HAC_INT_SET}, + {"RNG_TIMEOUT_NUM ", HPRE_RNG_TIMEOUT_NUM}, +}; + +static const char *hpre_dfx_files[HPRE_DFX_FILE_NUM] = { + "send_cnt", + "recv_cnt", + "send_fail_cnt", + "send_busy_cnt", + "over_thrhld_cnt", + "overtime_thrhld", + "invalid_req_cnt" +}; + +/* define the HPRE's dfx regs region and region length */ +static struct dfx_diff_registers hpre_diff_regs[] = { + { + .reg_offset = HPRE_DFX_BASE, + .reg_len = HPRE_DFX_BASE_LEN, + }, { + .reg_offset = HPRE_DFX_COMMON1, + .reg_len = HPRE_DFX_COMMON1_LEN, + }, { + .reg_offset = HPRE_DFX_COMMON2, + .reg_len = HPRE_DFX_COMMON2_LEN, + }, { + .reg_offset = HPRE_DFX_CORE, + .reg_len = HPRE_DFX_CORE_LEN, + }, +}; + +static const char *hpre_channel_name[HPRE_MAX_CHANNEL_NUM] = { + "RSA", + "ECC", +}; + +static const struct hisi_qm_err_ini hpre_err_ini; + +bool hpre_check_alg_support(struct hisi_qm *qm, u32 alg) +{ + u32 cap_val; + + cap_val = qm->cap_tables.dev_cap_table[HPRE_DRV_ALG_BITMAP].cap_val; + if (alg & cap_val) + return true; + + return false; +} + +static int hpre_diff_regs_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + + hisi_qm_acc_diff_regs_dump(qm, s, qm->debug.acc_diff_regs, + ARRAY_SIZE(hpre_diff_regs)); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(hpre_diff_regs); + +static int hpre_com_regs_show(struct seq_file *s, void *unused) +{ + hisi_qm_regs_dump(s, s->private); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(hpre_com_regs); + +static int hpre_cluster_regs_show(struct seq_file *s, void *unused) +{ + hisi_qm_regs_dump(s, s->private); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(hpre_cluster_regs); + +static const struct kernel_param_ops hpre_uacce_mode_ops = { + .set = uacce_mode_set, + .get = param_get_int, +}; + +/* + * uacce_mode = 0 means hpre only register to crypto, + * uacce_mode = 1 means hpre both register to crypto and uacce. + */ +static u32 uacce_mode = UACCE_MODE_NOUACCE; +module_param_cb(uacce_mode, &hpre_uacce_mode_ops, &uacce_mode, 0444); +MODULE_PARM_DESC(uacce_mode, UACCE_MODE_DESC); + +static bool pf_q_num_flag; +static int pf_q_num_set(const char *val, const struct kernel_param *kp) +{ + pf_q_num_flag = true; + + return hisi_qm_q_num_set(val, kp, PCI_DEVICE_ID_HUAWEI_HPRE_PF); +} + +static const struct kernel_param_ops hpre_pf_q_num_ops = { + .set = pf_q_num_set, + .get = param_get_int, +}; + +static u32 pf_q_num = HPRE_PF_DEF_Q_NUM; +module_param_cb(pf_q_num, &hpre_pf_q_num_ops, &pf_q_num, 0444); +MODULE_PARM_DESC(pf_q_num, "Number of queues in PF of CS(2-1024)"); + +static const struct kernel_param_ops vfs_num_ops = { + .set = vfs_num_set, + .get = param_get_int, +}; + +static u32 vfs_num; +module_param_cb(vfs_num, &vfs_num_ops, &vfs_num, 0444); +MODULE_PARM_DESC(vfs_num, "Number of VFs to enable(1-63), 0(default)"); + +struct hisi_qp *hpre_create_qp(u8 type) +{ + int node = cpu_to_node(raw_smp_processor_id()); + struct hisi_qp *qp = NULL; + int ret; + + if (type != HPRE_V2_ALG_TYPE && type != HPRE_V3_ECC_ALG_TYPE) + return NULL; + + /* + * type: 0 - RSA/DH. algorithm supported in V2, + * 1 - ECC algorithm in V3. + */ + ret = hisi_qm_alloc_qps_node(&hpre_devices, 1, &type, node, &qp); + if (!ret) + return qp; + + return NULL; +} + +static int hpre_wait_sva_ready(struct hisi_qm *qm) +{ + u32 val, try_times = 0; + u8 count = 0; + + /* + * Read the register value every 10-20us. If the value is 0 for three + * consecutive times, the SVA module is ready. + */ + do { + val = readl(qm->io_base + HPRE_SVA_PREFTCH_DFX4); + if (val) + count = 0; + else if (++count == HPRE_READ_SVA_STATUS_TIMES) + break; + + usleep_range(HPRE_WAIT_US_MIN, HPRE_WAIT_US_MAX); + } while (++try_times < HPRE_WAIT_SVA_READY); + + if (try_times == HPRE_WAIT_SVA_READY) { + pci_err(qm->pdev, "failed to wait sva prefetch ready\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static void hpre_config_pasid(struct hisi_qm *qm) +{ + u32 val1, val2; + + if (qm->ver >= QM_HW_V3) + return; + + val1 = readl_relaxed(qm->io_base + HPRE_DATA_RUSER_CFG); + val2 = readl_relaxed(qm->io_base + HPRE_DATA_WUSER_CFG); + if (qm->use_sva) { + val1 |= BIT(HPRE_PASID_EN_BIT); + val2 |= BIT(HPRE_PASID_EN_BIT); + } else { + val1 &= ~BIT(HPRE_PASID_EN_BIT); + val2 &= ~BIT(HPRE_PASID_EN_BIT); + } + writel_relaxed(val1, qm->io_base + HPRE_DATA_RUSER_CFG); + writel_relaxed(val2, qm->io_base + HPRE_DATA_WUSER_CFG); +} + +static int hpre_cfg_by_dsm(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + union acpi_object *obj; + guid_t guid; + + if (guid_parse("b06b81ab-0134-4a45-9b0c-483447b95fa7", &guid)) { + dev_err(dev, "Hpre GUID failed\n"); + return -EINVAL; + } + + /* Switch over to MSI handling due to non-standard PCI implementation */ + obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &guid, + 0, HPRE_VIA_MSI_DSM, NULL); + if (!obj) { + dev_err(dev, "ACPI handle failed!\n"); + return -EIO; + } + + ACPI_FREE(obj); + + return 0; +} + +static int hpre_set_cluster(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + u32 cluster_core_mask; + unsigned long offset; + u32 hpre_core_info; + u8 clusters_num; + u32 val = 0; + int ret, i; + + cluster_core_mask = qm->cap_tables.dev_cap_table[HPRE_CORE_EN].cap_val; + hpre_core_info = qm->cap_tables.dev_cap_table[HPRE_CORE_INFO].cap_val; + clusters_num = (hpre_core_info >> hpre_basic_info[HPRE_CLUSTER_NUM_CAP].shift) & + hpre_basic_info[HPRE_CLUSTER_NUM_CAP].mask; + for (i = 0; i < clusters_num; i++) { + offset = i * HPRE_CLSTR_ADDR_INTRVL; + + /* clusters initiating */ + writel(cluster_core_mask, + qm->io_base + offset + HPRE_CORE_ENB); + writel(0x1, qm->io_base + offset + HPRE_CORE_INI_CFG); + ret = readl_relaxed_poll_timeout(qm->io_base + offset + + HPRE_CORE_INI_STATUS, val, + ((val & cluster_core_mask) == + cluster_core_mask), + HPRE_REG_RD_INTVRL_US, + HPRE_REG_RD_TMOUT_US); + if (ret) { + dev_err(dev, + "cluster %d int st status timeout!\n", i); + return -ETIMEDOUT; + } + } + + return 0; +} + +/* + * For Kunpeng 920, we should disable FLR triggered by hardware (BME/PM/SRIOV). + * Or it may stay in D3 state when we bind and unbind hpre quickly, + * as it does FLR triggered by hardware. + */ +static void disable_flr_of_bme(struct hisi_qm *qm) +{ + u32 val; + + val = readl(qm->io_base + QM_PEH_AXUSER_CFG); + val &= ~(HPRE_QM_BME_FLR | HPRE_QM_SRIOV_FLR); + val |= HPRE_QM_PM_FLR; + writel(val, qm->io_base + QM_PEH_AXUSER_CFG); + writel(PEH_AXUSER_CFG_ENABLE, qm->io_base + QM_PEH_AXUSER_CFG_ENABLE); +} + +static void hpre_close_sva_prefetch(struct hisi_qm *qm) +{ + u32 val; + int ret; + + if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps)) + return; + + val = readl_relaxed(qm->io_base + HPRE_PREFETCH_CFG); + val |= HPRE_PREFETCH_DISABLE; + writel(val, qm->io_base + HPRE_PREFETCH_CFG); + + ret = readl_relaxed_poll_timeout(qm->io_base + HPRE_SVA_PREFTCH_DFX, + val, !(val & HPRE_SVA_DISABLE_READY), + HPRE_REG_RD_INTVRL_US, + HPRE_REG_RD_TMOUT_US); + if (ret) + pci_err(qm->pdev, "failed to close sva prefetch\n"); + + (void)hpre_wait_sva_ready(qm); +} + +static void hpre_open_sva_prefetch(struct hisi_qm *qm) +{ + u32 val; + int ret; + + if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps)) + return; + + /* Enable prefetch */ + val = readl_relaxed(qm->io_base + HPRE_PREFETCH_CFG); + val &= HPRE_PREFETCH_ENABLE; + writel(val, qm->io_base + HPRE_PREFETCH_CFG); + + ret = readl_relaxed_poll_timeout(qm->io_base + HPRE_PREFETCH_CFG, + val, !(val & HPRE_PREFETCH_DISABLE), + HPRE_REG_RD_INTVRL_US, + HPRE_REG_RD_TMOUT_US); + if (ret) { + pci_err(qm->pdev, "failed to open sva prefetch\n"); + hpre_close_sva_prefetch(qm); + return; + } + + ret = hpre_wait_sva_ready(qm); + if (ret) + hpre_close_sva_prefetch(qm); +} + +static void hpre_enable_clock_gate(struct hisi_qm *qm) +{ + unsigned long offset; + u8 clusters_num, i; + u32 hpre_core_info; + u32 val; + + if (qm->ver < QM_HW_V3) + return; + + val = readl(qm->io_base + HPRE_CLKGATE_CTL); + val |= HPRE_CLKGATE_CTL_EN; + writel(val, qm->io_base + HPRE_CLKGATE_CTL); + + val = readl(qm->io_base + HPRE_PEH_CFG_AUTO_GATE); + val |= HPRE_PEH_CFG_AUTO_GATE_EN; + writel(val, qm->io_base + HPRE_PEH_CFG_AUTO_GATE); + + hpre_core_info = qm->cap_tables.dev_cap_table[HPRE_CORE_INFO].cap_val; + clusters_num = (hpre_core_info >> hpre_basic_info[HPRE_CLUSTER_NUM_CAP].shift) & + hpre_basic_info[HPRE_CLUSTER_NUM_CAP].mask; + for (i = 0; i < clusters_num; i++) { + offset = (unsigned long)i * HPRE_CLSTR_ADDR_INTRVL; + val = readl(qm->io_base + offset + HPRE_CLUSTER_DYN_CTL); + val |= HPRE_CLUSTER_DYN_CTL_EN; + writel(val, qm->io_base + offset + HPRE_CLUSTER_DYN_CTL); + + val = readl(qm->io_base + offset + HPRE_CORE_SHB_CFG); + val |= HPRE_CORE_GATE_EN; + writel(val, qm->io_base + offset + HPRE_CORE_SHB_CFG); + } +} + +static void hpre_disable_clock_gate(struct hisi_qm *qm) +{ + unsigned long offset; + u8 clusters_num, i; + u32 hpre_core_info; + u32 val; + + if (qm->ver < QM_HW_V3) + return; + + val = readl(qm->io_base + HPRE_CLKGATE_CTL); + val &= ~HPRE_CLKGATE_CTL_EN; + writel(val, qm->io_base + HPRE_CLKGATE_CTL); + + val = readl(qm->io_base + HPRE_PEH_CFG_AUTO_GATE); + val &= ~HPRE_PEH_CFG_AUTO_GATE_EN; + writel(val, qm->io_base + HPRE_PEH_CFG_AUTO_GATE); + + hpre_core_info = qm->cap_tables.dev_cap_table[HPRE_CORE_INFO].cap_val; + clusters_num = (hpre_core_info >> hpre_basic_info[HPRE_CLUSTER_NUM_CAP].shift) & + hpre_basic_info[HPRE_CLUSTER_NUM_CAP].mask; + for (i = 0; i < clusters_num; i++) { + offset = (unsigned long)i * HPRE_CLSTR_ADDR_INTRVL; + val = readl(qm->io_base + offset + HPRE_CLUSTER_DYN_CTL); + val &= ~HPRE_CLUSTER_DYN_CTL_EN; + writel(val, qm->io_base + offset + HPRE_CLUSTER_DYN_CTL); + + val = readl(qm->io_base + offset + HPRE_CORE_SHB_CFG); + val &= ~HPRE_CORE_GATE_EN; + writel(val, qm->io_base + offset + HPRE_CORE_SHB_CFG); + } +} + +static int hpre_set_user_domain_and_cache(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + u32 val; + int ret; + + /* disabel dynamic clock gate before sram init */ + hpre_disable_clock_gate(qm); + + writel(HPRE_QM_USR_CFG_MASK, qm->io_base + QM_ARUSER_M_CFG_ENABLE); + writel(HPRE_QM_USR_CFG_MASK, qm->io_base + QM_AWUSER_M_CFG_ENABLE); + writel_relaxed(HPRE_QM_AXI_CFG_MASK, qm->io_base + QM_AXI_M_CFG); + + if (qm->ver >= QM_HW_V3) + writel(HPRE_RSA_ENB | HPRE_ECC_ENB, + qm->io_base + HPRE_TYPES_ENB); + else + writel(HPRE_RSA_ENB, qm->io_base + HPRE_TYPES_ENB); + + writel(HPRE_QM_VFG_AX_MASK, qm->io_base + HPRE_VFG_AXCACHE); + writel(0x0, qm->io_base + HPRE_BD_ENDIAN); + writel(0x0, qm->io_base + HPRE_POISON_BYPASS); + writel(0x0, qm->io_base + HPRE_ECC_BYPASS); + + writel(HPRE_BD_USR_MASK, qm->io_base + HPRE_BD_ARUSR_CFG); + writel(HPRE_BD_USR_MASK, qm->io_base + HPRE_BD_AWUSR_CFG); + writel(0x1, qm->io_base + HPRE_RDCHN_INI_CFG); + ret = readl_relaxed_poll_timeout(qm->io_base + HPRE_RDCHN_INI_ST, val, + val & BIT(0), + HPRE_REG_RD_INTVRL_US, + HPRE_REG_RD_TMOUT_US); + if (ret) { + dev_err(dev, "read rd channel timeout fail!\n"); + return -ETIMEDOUT; + } + + ret = hpre_set_cluster(qm); + if (ret) + return -ETIMEDOUT; + + /* This setting is only needed by Kunpeng 920. */ + if (qm->ver == QM_HW_V2) { + ret = hpre_cfg_by_dsm(qm); + if (ret) + return ret; + + disable_flr_of_bme(qm); + } + + /* Config data buffer pasid needed by Kunpeng 920 */ + hpre_config_pasid(qm); + hpre_open_sva_prefetch(qm); + + hpre_enable_clock_gate(qm); + + return ret; +} + +static void hpre_cnt_regs_clear(struct hisi_qm *qm) +{ + unsigned long offset; + u32 hpre_core_info; + u8 clusters_num; + int i; + + /* clear clusterX/cluster_ctrl */ + hpre_core_info = qm->cap_tables.dev_cap_table[HPRE_CORE_INFO].cap_val; + clusters_num = (hpre_core_info >> hpre_basic_info[HPRE_CLUSTER_NUM_CAP].shift) & + hpre_basic_info[HPRE_CLUSTER_NUM_CAP].mask; + for (i = 0; i < clusters_num; i++) { + offset = HPRE_CLSTR_BASE + i * HPRE_CLSTR_ADDR_INTRVL; + writel(0x0, qm->io_base + offset + HPRE_CLUSTER_INQURY); + } + + /* clear rdclr_en */ + writel(0x0, qm->io_base + HPRE_CTRL_CNT_CLR_CE); + + hisi_qm_debug_regs_clear(qm); +} + +static void hpre_master_ooo_ctrl(struct hisi_qm *qm, bool enable) +{ + u32 val1, val2; + + val1 = readl(qm->io_base + HPRE_AM_OOO_SHUTDOWN_ENB); + if (enable) { + val1 |= HPRE_AM_OOO_SHUTDOWN_ENABLE; + val2 = qm->err_info.dev_err.shutdown_mask; + } else { + val1 &= ~HPRE_AM_OOO_SHUTDOWN_ENABLE; + val2 = 0x0; + } + + if (qm->ver > QM_HW_V2) + writel(val2, qm->io_base + HPRE_OOO_SHUTDOWN_SEL); + + writel(val1, qm->io_base + HPRE_AM_OOO_SHUTDOWN_ENB); +} + +static void hpre_hw_error_disable(struct hisi_qm *qm) +{ + /* disable hpre hw error interrupts */ + writel(HPRE_RAS_MASK_ALL, qm->io_base + HPRE_INT_MASK); + /* disable HPRE block master OOO when nfe occurs on Kunpeng930 */ + hpre_master_ooo_ctrl(qm, false); +} + +static void hpre_hw_error_enable(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *dev_err = &qm->err_info.dev_err; + u32 err_mask = dev_err->ce | dev_err->nfe | dev_err->fe; + + /* clear HPRE hw error source if having */ + writel(HPRE_RAS_CLEAR_ALL, qm->io_base + HPRE_HAC_SOURCE_INT); + + /* configure error type */ + writel(dev_err->ce, qm->io_base + HPRE_RAS_CE_ENB); + writel(dev_err->nfe, qm->io_base + HPRE_RAS_NFE_ENB); + writel(dev_err->fe, qm->io_base + HPRE_RAS_FE_ENB); + + /* enable HPRE block master OOO when nfe occurs on Kunpeng930 */ + hpre_master_ooo_ctrl(qm, true); + + /* enable hpre hw error interrupts */ + writel(~err_mask, qm->io_base + HPRE_INT_MASK); +} + +static inline struct hisi_qm *hpre_file_to_qm(struct hpre_debugfs_file *file) +{ + struct hpre *hpre = container_of(file->debug, struct hpre, debug); + + return &hpre->qm; +} + +static u32 hpre_clear_enable_read(struct hpre_debugfs_file *file) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + + return readl(qm->io_base + HPRE_CTRL_CNT_CLR_CE) & + HPRE_CTRL_CNT_CLR_CE_BIT; +} + +static int hpre_clear_enable_write(struct hpre_debugfs_file *file, u32 val) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + u32 tmp; + + if (val != 1 && val != 0) + return -EINVAL; + + tmp = (readl(qm->io_base + HPRE_CTRL_CNT_CLR_CE) & + ~HPRE_CTRL_CNT_CLR_CE_BIT) | val; + writel(tmp, qm->io_base + HPRE_CTRL_CNT_CLR_CE); + + return 0; +} + +static u32 hpre_cluster_inqry_read(struct hpre_debugfs_file *file) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + int cluster_index = file->index - HPRE_CLUSTER_CTRL; + unsigned long offset = HPRE_CLSTR_BASE + + cluster_index * HPRE_CLSTR_ADDR_INTRVL; + + return readl(qm->io_base + offset + HPRE_CLSTR_ADDR_INQRY_RSLT); +} + +static void hpre_cluster_inqry_write(struct hpre_debugfs_file *file, u32 val) +{ + struct hisi_qm *qm = hpre_file_to_qm(file); + int cluster_index = file->index - HPRE_CLUSTER_CTRL; + unsigned long offset = HPRE_CLSTR_BASE + cluster_index * + HPRE_CLSTR_ADDR_INTRVL; + + writel(val, qm->io_base + offset + HPRE_CLUSTER_INQURY); +} + +static ssize_t hpre_ctrl_debug_read(struct file *filp, char __user *buf, + size_t count, loff_t *pos) +{ + struct hpre_debugfs_file *file = filp->private_data; + struct hisi_qm *qm = hpre_file_to_qm(file); + char tbuf[HPRE_DBGFS_VAL_MAX_LEN]; + u32 val; + int ret; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + spin_lock_irq(&file->lock); + switch (file->type) { + case HPRE_CLEAR_ENABLE: + val = hpre_clear_enable_read(file); + break; + case HPRE_CLUSTER_CTRL: + val = hpre_cluster_inqry_read(file); + break; + default: + goto err_input; + } + spin_unlock_irq(&file->lock); + + hisi_qm_put_dfx_access(qm); + ret = snprintf(tbuf, HPRE_DBGFS_VAL_MAX_LEN, "%u\n", val); + return simple_read_from_buffer(buf, count, pos, tbuf, ret); + +err_input: + spin_unlock_irq(&file->lock); + hisi_qm_put_dfx_access(qm); + return -EINVAL; +} + +static ssize_t hpre_ctrl_debug_write(struct file *filp, const char __user *buf, + size_t count, loff_t *pos) +{ + struct hpre_debugfs_file *file = filp->private_data; + struct hisi_qm *qm = hpre_file_to_qm(file); + char tbuf[HPRE_DBGFS_VAL_MAX_LEN]; + unsigned long val; + int len, ret; + + if (*pos != 0) + return 0; + + if (count >= HPRE_DBGFS_VAL_MAX_LEN) + return -ENOSPC; + + len = simple_write_to_buffer(tbuf, HPRE_DBGFS_VAL_MAX_LEN - 1, + pos, buf, count); + if (len < 0) + return len; + + tbuf[len] = '\0'; + if (kstrtoul(tbuf, 0, &val)) + return -EFAULT; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + spin_lock_irq(&file->lock); + switch (file->type) { + case HPRE_CLEAR_ENABLE: + ret = hpre_clear_enable_write(file, val); + if (ret) + goto err_input; + break; + case HPRE_CLUSTER_CTRL: + hpre_cluster_inqry_write(file, val); + break; + default: + ret = -EINVAL; + goto err_input; + } + + ret = count; + +err_input: + spin_unlock_irq(&file->lock); + hisi_qm_put_dfx_access(qm); + return ret; +} + +static const struct file_operations hpre_ctrl_debug_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = hpre_ctrl_debug_read, + .write = hpre_ctrl_debug_write, +}; + +static int hpre_debugfs_atomic64_get(void *data, u64 *val) +{ + struct hpre_dfx *dfx_item = data; + + *val = atomic64_read(&dfx_item->value); + + return 0; +} + +static int hpre_debugfs_atomic64_set(void *data, u64 val) +{ + struct hpre_dfx *dfx_item = data; + struct hpre_dfx *hpre_dfx = NULL; + + if (dfx_item->type == HPRE_OVERTIME_THRHLD) { + hpre_dfx = dfx_item - HPRE_OVERTIME_THRHLD; + atomic64_set(&hpre_dfx[HPRE_OVER_THRHLD_CNT].value, 0); + } else if (val) { + return -EINVAL; + } + + atomic64_set(&dfx_item->value, val); + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(hpre_atomic64_ops, hpre_debugfs_atomic64_get, + hpre_debugfs_atomic64_set, "%llu\n"); + +static int hpre_create_debugfs_file(struct hisi_qm *qm, struct dentry *dir, + enum hpre_ctrl_dbgfs_file type, int indx) +{ + struct hpre *hpre = container_of(qm, struct hpre, qm); + struct hpre_debug *dbg = &hpre->debug; + struct dentry *file_dir; + + if (dir) + file_dir = dir; + else + file_dir = qm->debug.debug_root; + + if (type >= HPRE_DEBUG_FILE_NUM) + return -EINVAL; + + spin_lock_init(&dbg->files[indx].lock); + dbg->files[indx].debug = dbg; + dbg->files[indx].type = type; + dbg->files[indx].index = indx; + debugfs_create_file(hpre_debug_file_name[type], 0600, file_dir, + dbg->files + indx, &hpre_ctrl_debug_fops); + + return 0; +} + +static int hpre_pf_comm_regs_debugfs_init(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + struct debugfs_regset32 *regset; + + regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL); + if (!regset) + return -ENOMEM; + + regset->regs = hpre_com_dfx_regs; + regset->nregs = ARRAY_SIZE(hpre_com_dfx_regs); + regset->base = qm->io_base; + regset->dev = dev; + + debugfs_create_file("regs", 0444, qm->debug.debug_root, + regset, &hpre_com_regs_fops); + + return 0; +} + +static int hpre_cluster_debugfs_init(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + char buf[HPRE_DBGFS_VAL_MAX_LEN]; + struct debugfs_regset32 *regset; + struct dentry *tmp_d; + u32 hpre_core_info; + u8 clusters_num; + int i, ret; + + hpre_core_info = qm->cap_tables.dev_cap_table[HPRE_CORE_INFO].cap_val; + clusters_num = (hpre_core_info >> hpre_basic_info[HPRE_CLUSTER_NUM_CAP].shift) & + hpre_basic_info[HPRE_CLUSTER_NUM_CAP].mask; + for (i = 0; i < clusters_num; i++) { + ret = snprintf(buf, HPRE_DBGFS_VAL_MAX_LEN, "cluster%d", i); + if (ret >= HPRE_DBGFS_VAL_MAX_LEN) + return -EINVAL; + tmp_d = debugfs_create_dir(buf, qm->debug.debug_root); + + regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL); + if (!regset) + return -ENOMEM; + + regset->regs = hpre_cluster_dfx_regs; + regset->nregs = ARRAY_SIZE(hpre_cluster_dfx_regs); + regset->base = qm->io_base + hpre_cluster_offsets[i]; + regset->dev = dev; + + debugfs_create_file("regs", 0444, tmp_d, regset, + &hpre_cluster_regs_fops); + ret = hpre_create_debugfs_file(qm, tmp_d, HPRE_CLUSTER_CTRL, + i + HPRE_CLUSTER_CTRL); + if (ret) + return ret; + } + + return 0; +} + +static int hpre_ctrl_debug_init(struct hisi_qm *qm) +{ + int ret; + + ret = hpre_create_debugfs_file(qm, NULL, HPRE_CLEAR_ENABLE, + HPRE_CLEAR_ENABLE); + if (ret) + return ret; + + ret = hpre_pf_comm_regs_debugfs_init(qm); + if (ret) + return ret; + + return hpre_cluster_debugfs_init(qm); +} + +static int hpre_cap_regs_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + u32 i, size; + + size = qm->cap_tables.qm_cap_size; + for (i = 0; i < size; i++) + seq_printf(s, "%s= 0x%08x\n", qm->cap_tables.qm_cap_table[i].name, + qm->cap_tables.qm_cap_table[i].cap_val); + + size = qm->cap_tables.dev_cap_size; + for (i = 0; i < size; i++) + seq_printf(s, "%s= 0x%08x\n", qm->cap_tables.dev_cap_table[i].name, + qm->cap_tables.dev_cap_table[i].cap_val); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(hpre_cap_regs); + +static void hpre_dfx_debug_init(struct hisi_qm *qm) +{ + struct dfx_diff_registers *hpre_regs = qm->debug.acc_diff_regs; + struct hpre *hpre = container_of(qm, struct hpre, qm); + struct hpre_dfx *dfx = hpre->debug.dfx; + struct dentry *parent; + int i; + + parent = debugfs_create_dir("hpre_dfx", qm->debug.debug_root); + for (i = 0; i < HPRE_DFX_FILE_NUM; i++) { + dfx[i].type = i; + debugfs_create_file(hpre_dfx_files[i], 0644, parent, &dfx[i], + &hpre_atomic64_ops); + } + + if (qm->fun_type == QM_HW_PF && hpre_regs) + debugfs_create_file("diff_regs", 0444, parent, + qm, &hpre_diff_regs_fops); + + debugfs_create_file("cap_regs", CAP_FILE_PERMISSION, + qm->debug.debug_root, qm, &hpre_cap_regs_fops); +} + +static int hpre_debugfs_init(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + ret = hisi_qm_regs_debugfs_init(qm, hpre_diff_regs, ARRAY_SIZE(hpre_diff_regs)); + if (ret) { + dev_warn(dev, "Failed to init HPRE diff regs!\n"); + return ret; + } + + qm->debug.debug_root = debugfs_create_dir(dev_name(dev), + hpre_debugfs_root); + qm->debug.sqe_mask_offset = HPRE_SQE_MASK_OFFSET; + qm->debug.sqe_mask_len = HPRE_SQE_MASK_LEN; + + hisi_qm_debug_init(qm); + + if (qm->pdev->device == PCI_DEVICE_ID_HUAWEI_HPRE_PF) { + ret = hpre_ctrl_debug_init(qm); + if (ret) + goto debugfs_remove; + } + + hpre_dfx_debug_init(qm); + + return 0; + +debugfs_remove: + debugfs_remove_recursive(qm->debug.debug_root); + hisi_qm_regs_debugfs_uninit(qm, ARRAY_SIZE(hpre_diff_regs)); + return ret; +} + +static void hpre_debugfs_exit(struct hisi_qm *qm) +{ + debugfs_remove_recursive(qm->debug.debug_root); + + hisi_qm_regs_debugfs_uninit(qm, ARRAY_SIZE(hpre_diff_regs)); +} + +static int hpre_pre_store_cap_reg(struct hisi_qm *qm) +{ + struct hisi_qm_cap_record *hpre_cap; + struct device *dev = &qm->pdev->dev; + u32 hpre_core_info; + u8 clusters_num; + size_t i, size; + + size = ARRAY_SIZE(hpre_cap_query_info); + hpre_cap = devm_kcalloc(dev, size, sizeof(*hpre_cap), GFP_KERNEL); + if (!hpre_cap) + return -ENOMEM; + + for (i = 0; i < size; i++) { + hpre_cap[i].type = hpre_cap_query_info[i].type; + hpre_cap[i].name = hpre_cap_query_info[i].name; + hpre_cap[i].cap_val = hisi_qm_get_cap_value(qm, hpre_cap_query_info, + i, qm->cap_ver); + } + + hpre_core_info = hpre_cap[HPRE_CORE_INFO].cap_val; + clusters_num = (hpre_core_info >> hpre_basic_info[HPRE_CLUSTER_NUM_CAP].shift) & + hpre_basic_info[HPRE_CLUSTER_NUM_CAP].mask; + if (clusters_num > HPRE_CLUSTERS_NUM_MAX) { + dev_err(dev, "Device cluster num %u is out of range for driver supports %d!\n", + clusters_num, HPRE_CLUSTERS_NUM_MAX); + return -EINVAL; + } + + qm->cap_tables.dev_cap_table = hpre_cap; + qm->cap_tables.dev_cap_size = size; + + return 0; +} + +static void hpre_set_channels(struct hisi_qm *qm) +{ + struct qm_channel *channel_data = &qm->channel_data; + int i; + + channel_data->channel_num = HPRE_MAX_CHANNEL_NUM; + for (i = 0; i < HPRE_MAX_CHANNEL_NUM; i++) + channel_data->channel_name[i] = hpre_channel_name[i]; +} + +static int hpre_qm_init(struct hisi_qm *qm, struct pci_dev *pdev) +{ + u64 alg_msk; + int ret; + + if (pdev->revision == QM_HW_V1) { + pci_warn(pdev, "HPRE version 1 is not supported!\n"); + return -EINVAL; + } + + qm->mode = uacce_mode; + qm->pdev = pdev; + qm->sqe_size = HPRE_SQE_SIZE; + qm->dev_name = hpre_name; + + qm->fun_type = (pdev->device == PCI_DEVICE_ID_HUAWEI_HPRE_PF) ? + QM_HW_PF : QM_HW_VF; + if (qm->fun_type == QM_HW_PF) { + qm->qp_base = HPRE_PF_DEF_Q_BASE; + qm->qp_num = pf_q_num; + qm->debug.curr_qm_qp_num = pf_q_num; + qm->qm_list = &hpre_devices; + qm->err_ini = &hpre_err_ini; + if (pf_q_num_flag) + set_bit(QM_MODULE_PARAM, &qm->misc_ctl); + } + + ret = hisi_qm_init(qm); + if (ret) { + pci_err(pdev, "Failed to init hpre qm configures!\n"); + return ret; + } + + hpre_set_channels(qm); + /* Fetch and save the value of capability registers */ + ret = hpre_pre_store_cap_reg(qm); + if (ret) { + pci_err(pdev, "Failed to pre-store capability registers!\n"); + hisi_qm_uninit(qm); + return ret; + } + + alg_msk = qm->cap_tables.dev_cap_table[HPRE_ALG_BITMAP].cap_val; + ret = hisi_qm_set_algs(qm, alg_msk, hpre_dev_algs, ARRAY_SIZE(hpre_dev_algs)); + if (ret) { + pci_err(pdev, "Failed to set hpre algs!\n"); + hisi_qm_uninit(qm); + } + + return ret; +} + +static int hpre_show_last_regs_init(struct hisi_qm *qm) +{ + int cluster_dfx_regs_num = ARRAY_SIZE(hpre_cluster_dfx_regs); + int com_dfx_regs_num = ARRAY_SIZE(hpre_com_dfx_regs); + struct qm_debug *debug = &qm->debug; + void __iomem *io_base; + u32 hpre_core_info; + u8 clusters_num; + int i, j, idx; + + hpre_core_info = qm->cap_tables.dev_cap_table[HPRE_CORE_INFO].cap_val; + clusters_num = (hpre_core_info >> hpre_basic_info[HPRE_CLUSTER_NUM_CAP].shift) & + hpre_basic_info[HPRE_CLUSTER_NUM_CAP].mask; + debug->last_words = kcalloc(cluster_dfx_regs_num * clusters_num + + com_dfx_regs_num, sizeof(unsigned int), GFP_KERNEL); + if (!debug->last_words) + return -ENOMEM; + + for (i = 0; i < com_dfx_regs_num; i++) + debug->last_words[i] = readl_relaxed(qm->io_base + + hpre_com_dfx_regs[i].offset); + + for (i = 0; i < clusters_num; i++) { + io_base = qm->io_base + hpre_cluster_offsets[i]; + for (j = 0; j < cluster_dfx_regs_num; j++) { + idx = com_dfx_regs_num + i * cluster_dfx_regs_num + j; + debug->last_words[idx] = readl_relaxed( + io_base + hpre_cluster_dfx_regs[j].offset); + } + } + + return 0; +} + +static void hpre_show_last_regs_uninit(struct hisi_qm *qm) +{ + struct qm_debug *debug = &qm->debug; + + if (qm->fun_type == QM_HW_VF || !debug->last_words) + return; + + kfree(debug->last_words); + debug->last_words = NULL; +} + +static void hpre_show_last_dfx_regs(struct hisi_qm *qm) +{ + int cluster_dfx_regs_num = ARRAY_SIZE(hpre_cluster_dfx_regs); + int com_dfx_regs_num = ARRAY_SIZE(hpre_com_dfx_regs); + struct qm_debug *debug = &qm->debug; + struct pci_dev *pdev = qm->pdev; + void __iomem *io_base; + u32 hpre_core_info; + u8 clusters_num; + int i, j, idx; + u32 val; + + if (qm->fun_type == QM_HW_VF || !debug->last_words) + return; + + /* dumps last word of the debugging registers during controller reset */ + for (i = 0; i < com_dfx_regs_num; i++) { + val = readl_relaxed(qm->io_base + hpre_com_dfx_regs[i].offset); + if (debug->last_words[i] != val) + pci_info(pdev, "Common_core:%s \t= 0x%08x => 0x%08x\n", + hpre_com_dfx_regs[i].name, debug->last_words[i], val); + } + + hpre_core_info = qm->cap_tables.dev_cap_table[HPRE_CORE_INFO].cap_val; + clusters_num = (hpre_core_info >> hpre_basic_info[HPRE_CLUSTER_NUM_CAP].shift) & + hpre_basic_info[HPRE_CLUSTER_NUM_CAP].mask; + for (i = 0; i < clusters_num; i++) { + io_base = qm->io_base + hpre_cluster_offsets[i]; + for (j = 0; j < cluster_dfx_regs_num; j++) { + val = readl_relaxed(io_base + + hpre_cluster_dfx_regs[j].offset); + idx = com_dfx_regs_num + i * cluster_dfx_regs_num + j; + if (debug->last_words[idx] != val) + pci_info(pdev, "cluster-%d:%s \t= 0x%08x => 0x%08x\n", + i, hpre_cluster_dfx_regs[j].name, debug->last_words[idx], val); + } + } +} + +static void hpre_log_hw_error(struct hisi_qm *qm, u32 err_sts) +{ + const struct hpre_hw_error *err = hpre_hw_errors; + struct device *dev = &qm->pdev->dev; + + while (err->msg) { + if (err->int_msk & err_sts) + dev_warn(dev, "%s [error status=0x%x] found\n", + err->msg, err->int_msk); + err++; + } +} + +static u32 hpre_get_hw_err_status(struct hisi_qm *qm) +{ + return readl(qm->io_base + HPRE_INT_STATUS); +} + +static void hpre_clear_hw_err_status(struct hisi_qm *qm, u32 err_sts) +{ + writel(err_sts, qm->io_base + HPRE_HAC_SOURCE_INT); +} + +static void hpre_disable_error_report(struct hisi_qm *qm, u32 err_type) +{ + u32 nfe_mask = qm->err_info.dev_err.nfe; + + writel(nfe_mask & (~err_type), qm->io_base + HPRE_RAS_NFE_ENB); +} + +static void hpre_enable_error_report(struct hisi_qm *qm) +{ + u32 nfe_mask = qm->err_info.dev_err.nfe; + u32 ce_mask = qm->err_info.dev_err.ce; + + writel(nfe_mask, qm->io_base + HPRE_RAS_NFE_ENB); + writel(ce_mask, qm->io_base + HPRE_RAS_CE_ENB); +} + +static void hpre_open_axi_master_ooo(struct hisi_qm *qm) +{ + u32 value; + + value = readl(qm->io_base + HPRE_AM_OOO_SHUTDOWN_ENB); + writel(value & ~HPRE_AM_OOO_SHUTDOWN_ENABLE, + qm->io_base + HPRE_AM_OOO_SHUTDOWN_ENB); + writel(value | HPRE_AM_OOO_SHUTDOWN_ENABLE, + qm->io_base + HPRE_AM_OOO_SHUTDOWN_ENB); +} + +static enum acc_err_result hpre_get_err_result(struct hisi_qm *qm) +{ + u32 err_status; + + err_status = hpre_get_hw_err_status(qm); + if (err_status) { + if (err_status & qm->err_info.dev_err.ecc_2bits_mask) + qm->err_status.is_dev_ecc_mbit = true; + hpre_log_hw_error(qm, err_status); + + if (err_status & qm->err_info.dev_err.reset_mask) { + /* Disable the same error reporting until device is recovered. */ + hpre_disable_error_report(qm, err_status); + return ACC_ERR_NEED_RESET; + } + hpre_clear_hw_err_status(qm, err_status); + /* Avoid firmware disable error report, re-enable. */ + hpre_enable_error_report(qm); + } + + return ACC_ERR_RECOVERED; +} + +static bool hpre_dev_is_abnormal(struct hisi_qm *qm) +{ + u32 err_status; + + err_status = hpre_get_hw_err_status(qm); + if (err_status & qm->err_info.dev_err.shutdown_mask) + return true; + + return false; +} + +static void hpre_disable_axi_error(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *dev_err = &qm->err_info.dev_err; + u32 err_mask = dev_err->ce | dev_err->nfe | dev_err->fe; + u32 val; + + val = ~(err_mask & (~HPRE_AXI_ERROR_MASK)); + writel(val, qm->io_base + HPRE_INT_MASK); + + if (qm->ver > QM_HW_V2) + writel(dev_err->shutdown_mask & (~HPRE_AXI_ERROR_MASK), + qm->io_base + HPRE_OOO_SHUTDOWN_SEL); +} + +static void hpre_enable_axi_error(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *dev_err = &qm->err_info.dev_err; + u32 err_mask = dev_err->ce | dev_err->nfe | dev_err->fe; + + /* clear axi error source */ + writel(HPRE_AXI_ERROR_MASK, qm->io_base + HPRE_HAC_SOURCE_INT); + + writel(~err_mask, qm->io_base + HPRE_INT_MASK); + + if (qm->ver > QM_HW_V2) + writel(dev_err->shutdown_mask, qm->io_base + HPRE_OOO_SHUTDOWN_SEL); +} + +static void hpre_err_info_init(struct hisi_qm *qm) +{ + struct hisi_qm_err_info *err_info = &qm->err_info; + struct hisi_qm_err_mask *qm_err = &err_info->qm_err; + struct hisi_qm_err_mask *dev_err = &err_info->dev_err; + + qm_err->fe = HPRE_HAC_RAS_FE_ENABLE; + qm_err->ce = hisi_qm_get_hw_info(qm, hpre_basic_info, HPRE_QM_CE_MASK_CAP, qm->cap_ver); + qm_err->nfe = hisi_qm_get_hw_info(qm, hpre_basic_info, HPRE_QM_NFE_MASK_CAP, qm->cap_ver); + qm_err->shutdown_mask = hisi_qm_get_hw_info(qm, hpre_basic_info, + HPRE_QM_OOO_SHUTDOWN_MASK_CAP, qm->cap_ver); + qm_err->reset_mask = hisi_qm_get_hw_info(qm, hpre_basic_info, + HPRE_QM_RESET_MASK_CAP, qm->cap_ver); + qm_err->ecc_2bits_mask = QM_ECC_MBIT; + + dev_err->fe = HPRE_HAC_RAS_FE_ENABLE; + dev_err->ce = hisi_qm_get_hw_info(qm, hpre_basic_info, HPRE_CE_MASK_CAP, qm->cap_ver); + dev_err->nfe = hisi_qm_get_hw_info(qm, hpre_basic_info, HPRE_NFE_MASK_CAP, qm->cap_ver); + dev_err->shutdown_mask = hisi_qm_get_hw_info(qm, hpre_basic_info, + HPRE_OOO_SHUTDOWN_MASK_CAP, qm->cap_ver); + dev_err->reset_mask = hisi_qm_get_hw_info(qm, hpre_basic_info, + HPRE_RESET_MASK_CAP, qm->cap_ver); + dev_err->ecc_2bits_mask = HPRE_CORE_ECC_2BIT_ERR | HPRE_OOO_ECC_2BIT_ERR; + + err_info->msi_wr_port = HPRE_WR_MSI_PORT; + err_info->acpi_rst = "HRST"; +} + +static const struct hisi_qm_err_ini hpre_err_ini = { + .hw_init = hpre_set_user_domain_and_cache, + .hw_err_enable = hpre_hw_error_enable, + .hw_err_disable = hpre_hw_error_disable, + .get_dev_hw_err_status = hpre_get_hw_err_status, + .clear_dev_hw_err_status = hpre_clear_hw_err_status, + .open_axi_master_ooo = hpre_open_axi_master_ooo, + .open_sva_prefetch = hpre_open_sva_prefetch, + .close_sva_prefetch = hpre_close_sva_prefetch, + .show_last_dfx_regs = hpre_show_last_dfx_regs, + .err_info_init = hpre_err_info_init, + .get_err_result = hpre_get_err_result, + .dev_is_abnormal = hpre_dev_is_abnormal, + .disable_axi_error = hpre_disable_axi_error, + .enable_axi_error = hpre_enable_axi_error, +}; + +static int hpre_pf_probe_init(struct hpre *hpre) +{ + struct hisi_qm *qm = &hpre->qm; + int ret; + + ret = hpre_set_user_domain_and_cache(qm); + if (ret) + return ret; + + hisi_qm_dev_err_init(qm); + ret = hpre_show_last_regs_init(qm); + if (ret) + pci_err(qm->pdev, "Failed to init last word regs!\n"); + + return ret; +} + +static int hpre_probe_init(struct hpre *hpre) +{ + u32 type_rate = HPRE_SHAPER_TYPE_RATE; + struct hisi_qm *qm = &hpre->qm; + int ret; + + if (qm->fun_type == QM_HW_PF) { + ret = hpre_pf_probe_init(hpre); + if (ret) + return ret; + /* Enable shaper type 0 */ + if (qm->ver >= QM_HW_V3) { + type_rate |= QM_SHAPER_ENABLE; + qm->type_rate = type_rate; + } + } + + return 0; +} + +static void hpre_probe_uninit(struct hisi_qm *qm) +{ + if (qm->fun_type == QM_HW_VF) + return; + + hpre_cnt_regs_clear(qm); + qm->debug.curr_qm_qp_num = 0; + hpre_show_last_regs_uninit(qm); + hpre_close_sva_prefetch(qm); + hisi_qm_dev_err_uninit(qm); +} + +static int hpre_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct hisi_qm *qm; + struct hpre *hpre; + int ret; + + hpre = devm_kzalloc(&pdev->dev, sizeof(*hpre), GFP_KERNEL); + if (!hpre) + return -ENOMEM; + + qm = &hpre->qm; + ret = hpre_qm_init(qm, pdev); + if (ret) { + pci_err(pdev, "Failed to init HPRE QM (%d)!\n", ret); + return ret; + } + + ret = hpre_probe_init(hpre); + if (ret) { + pci_err(pdev, "Failed to probe (%d)!\n", ret); + goto err_with_qm_init; + } + + ret = hisi_qm_start(qm); + if (ret) + goto err_with_probe_init; + + ret = hpre_debugfs_init(qm); + if (ret) + dev_warn(&pdev->dev, "init debugfs fail!\n"); + + hisi_qm_add_list(qm, &hpre_devices); + ret = hisi_qm_alg_register(qm, &hpre_devices, HPRE_CTX_Q_NUM_DEF); + if (ret < 0) { + pci_err(pdev, "fail to register algs to crypto!\n"); + goto err_qm_del_list; + } + + ret = hisi_qm_register_uacce(qm); + if (ret) { + pci_err(pdev, "failed to register uacce (%d)!\n", ret); + goto err_with_alg_register; + } + + if (qm->fun_type == QM_HW_PF && vfs_num) { + ret = hisi_qm_sriov_enable(pdev, vfs_num); + if (ret < 0) + goto err_with_alg_register; + } + + hisi_qm_pm_init(qm); + + return 0; + +err_with_alg_register: + hisi_qm_alg_unregister(qm, &hpre_devices, HPRE_CTX_Q_NUM_DEF); + +err_qm_del_list: + hisi_qm_del_list(qm, &hpre_devices); + hpre_debugfs_exit(qm); + hisi_qm_stop(qm, QM_NORMAL); + +err_with_probe_init: + hpre_probe_uninit(qm); + +err_with_qm_init: + hisi_qm_uninit(qm); + + return ret; +} + +static void hpre_remove(struct pci_dev *pdev) +{ + struct hisi_qm *qm = pci_get_drvdata(pdev); + + hisi_qm_pm_uninit(qm); + hisi_qm_wait_task_finish(qm, &hpre_devices); + hisi_qm_alg_unregister(qm, &hpre_devices, HPRE_CTX_Q_NUM_DEF); + hisi_qm_del_list(qm, &hpre_devices); + if (qm->fun_type == QM_HW_PF && qm->vfs_num) + hisi_qm_sriov_disable(pdev, true); + + hpre_debugfs_exit(qm); + hisi_qm_stop(qm, QM_NORMAL); + + hpre_probe_uninit(qm); + hisi_qm_uninit(qm); +} + +static const struct dev_pm_ops hpre_pm_ops = { + SET_RUNTIME_PM_OPS(hisi_qm_suspend, hisi_qm_resume, NULL) +}; + +static const struct pci_error_handlers hpre_err_handler = { + .error_detected = hisi_qm_dev_err_detected, + .slot_reset = hisi_qm_dev_slot_reset, + .reset_prepare = hisi_qm_reset_prepare, + .reset_done = hisi_qm_reset_done, +}; + +static struct pci_driver hpre_pci_driver = { + .name = hpre_name, + .id_table = hpre_dev_ids, + .probe = hpre_probe, + .remove = hpre_remove, + .sriov_configure = IS_ENABLED(CONFIG_PCI_IOV) ? + hisi_qm_sriov_configure : NULL, + .err_handler = &hpre_err_handler, + .shutdown = hisi_qm_dev_shutdown, + .driver.pm = &hpre_pm_ops, +}; + +struct pci_driver *hisi_hpre_get_pf_driver(void) +{ + return &hpre_pci_driver; +} +EXPORT_SYMBOL_GPL(hisi_hpre_get_pf_driver); + +static void hpre_register_debugfs(void) +{ + if (!debugfs_initialized()) + return; + + hpre_debugfs_root = debugfs_create_dir(hpre_name, NULL); +} + +static void hpre_unregister_debugfs(void) +{ + debugfs_remove_recursive(hpre_debugfs_root); +} + +static int __init hpre_init(void) +{ + int ret; + + hisi_qm_init_list(&hpre_devices); + hpre_register_debugfs(); + + ret = pci_register_driver(&hpre_pci_driver); + if (ret) { + hpre_unregister_debugfs(); + pr_err("hpre: can't register hisi hpre driver.\n"); + } + + return ret; +} + +static void __exit hpre_exit(void) +{ + pci_unregister_driver(&hpre_pci_driver); + hpre_unregister_debugfs(); +} + +module_init(hpre_init); +module_exit(hpre_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Zaibo Xu <xuzaibo@huawei.com>"); +MODULE_AUTHOR("Meng Yu <yumeng18@huawei.com>"); +MODULE_DESCRIPTION("Driver for HiSilicon HPRE accelerator"); diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c new file mode 100644 index 000000000..a951d2ef7 --- /dev/null +++ b/drivers/crypto/hisilicon/qm.c @@ -0,0 +1,6365 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 HiSilicon Limited. */ +#include <asm/page.h> +#include <linux/acpi.h> +#include <linux/bitmap.h> +#include <linux/dma-mapping.h> +#include <linux/idr.h> +#include <linux/io.h> +#include <linux/irqreturn.h> +#include <linux/log2.h> +#include <linux/pm_runtime.h> +#include <linux/seq_file.h> +#include <linux/slab.h> +#include <linux/uacce.h> +#include <linux/uaccess.h> +#include <uapi/misc/uacce/hisi_qm.h> +#include <linux/hisi_acc_qm.h> +#include "qm_common.h" + +/* eq/aeq irq enable */ +#define QM_VF_AEQ_INT_SOURCE 0x0 +#define QM_VF_AEQ_INT_MASK 0x4 +#define QM_VF_EQ_INT_SOURCE 0x8 +#define QM_VF_EQ_INT_MASK 0xc + +#define QM_IRQ_VECTOR_MASK GENMASK(15, 0) +#define QM_IRQ_TYPE_MASK GENMASK(15, 0) +#define QM_IRQ_TYPE_SHIFT 16 +#define QM_ABN_IRQ_TYPE_MASK GENMASK(7, 0) + +/* mailbox */ +#define QM_MB_PING_ALL_VFS 0xffff +#define QM_MB_STATUS_MASK GENMASK(12, 9) +#define QM_MB_BUSY_MASK BIT(13) +#define QM_MB_MAX_WAIT_TIMEOUT USEC_PER_SEC +#define QM_MB_MAX_STOP_TIMEOUT (5 * USEC_PER_SEC) + +/* sqc shift */ +#define QM_SQ_HOP_NUM_SHIFT 0 +#define QM_SQ_PAGE_SIZE_SHIFT 4 +#define QM_SQ_BUF_SIZE_SHIFT 8 +#define QM_SQ_SQE_SIZE_SHIFT 12 +#define QM_SQ_PRIORITY_SHIFT 0 +#define QM_SQ_ORDERS_SHIFT 4 +#define QM_SQ_TYPE_SHIFT 8 +#define QM_QC_PASID_ENABLE 0x1 +#define QM_QC_PASID_ENABLE_SHIFT 7 + +#define QM_SQ_TYPE_MASK GENMASK(3, 0) +#define QM_SQ_TAIL_IDX(sqc) ((le16_to_cpu((sqc).w11) >> 6) & 0x1) +#define QM_SQC_DISABLE_QP (1U << 6) +#define QM_XQC_RANDOM_DATA 0xaaaa + +/* cqc shift */ +#define QM_CQ_HOP_NUM_SHIFT 0 +#define QM_CQ_PAGE_SIZE_SHIFT 4 +#define QM_CQ_BUF_SIZE_SHIFT 8 +#define QM_CQ_CQE_SIZE_SHIFT 12 +#define QM_CQ_PHASE_SHIFT 0 +#define QM_CQ_FLAG_SHIFT 1 + +#define QM_CQE_PHASE(cqe) (le16_to_cpu((cqe)->w7) & 0x1) +#define QM_QC_CQE_SIZE 4 +#define QM_CQ_TAIL_IDX(cqc) ((le16_to_cpu((cqc).w11) >> 6) & 0x1) + +/* eqc shift */ +#define QM_EQE_AEQE_SIZE (2UL << 12) +#define QM_EQC_PHASE_SHIFT 16 + +#define QM_EQE_PHASE(dw0) (((dw0) >> 16) & 0x1) +#define QM_EQE_CQN_MASK GENMASK(15, 0) + +#define QM_AEQE_PHASE(dw0) (((dw0) >> 16) & 0x1) +#define QM_AEQE_TYPE_SHIFT 17 +#define QM_AEQE_TYPE_MASK 0xf +#define QM_AEQE_CQN_MASK GENMASK(15, 0) +#define QM_CQ_OVERFLOW 0 +#define QM_EQ_OVERFLOW 1 +#define QM_CQE_ERROR 2 + +#define QM_XQ_DEPTH_SHIFT 16 +#define QM_XQ_DEPTH_MASK GENMASK(15, 0) + +#define QM_DOORBELL_CMD_SQ 0 +#define QM_DOORBELL_CMD_CQ 1 +#define QM_DOORBELL_CMD_EQ 2 +#define QM_DOORBELL_CMD_AEQ 3 + +#define QM_DOORBELL_BASE_V1 0x340 +#define QM_DB_CMD_SHIFT_V1 16 +#define QM_DB_INDEX_SHIFT_V1 32 +#define QM_DB_PRIORITY_SHIFT_V1 48 +#define QM_PAGE_SIZE 0x0034 +#define QM_QP_DB_INTERVAL 0x10000 +#define QM_DB_TIMEOUT_CFG 0x100074 +#define QM_DB_TIMEOUT_SET 0x1fffff + +#define QM_MEM_START_INIT 0x100040 +#define QM_MEM_INIT_DONE 0x100044 +#define QM_VFT_CFG_RDY 0x10006c +#define QM_VFT_CFG_OP_WR 0x100058 +#define QM_VFT_CFG_TYPE 0x10005c +#define QM_VFT_CFG 0x100060 +#define QM_VFT_CFG_OP_ENABLE 0x100054 +#define QM_PM_CTRL 0x100148 +#define QM_IDLE_DISABLE BIT(9) + +#define QM_SUB_VERSION_ID 0x210 + +#define QM_VFT_CFG_DATA_L 0x100064 +#define QM_VFT_CFG_DATA_H 0x100068 +#define QM_SQC_VFT_BUF_SIZE (7ULL << 8) +#define QM_SQC_VFT_SQC_SIZE (5ULL << 12) +#define QM_SQC_VFT_INDEX_NUMBER (1ULL << 16) +#define QM_SQC_VFT_START_SQN_SHIFT 28 +#define QM_SQC_VFT_VALID (1ULL << 44) +#define QM_SQC_VFT_SQN_SHIFT 45 +#define QM_CQC_VFT_BUF_SIZE (7ULL << 8) +#define QM_CQC_VFT_SQC_SIZE (5ULL << 12) +#define QM_CQC_VFT_INDEX_NUMBER (1ULL << 16) +#define QM_CQC_VFT_VALID (1ULL << 28) + +#define QM_SQC_VFT_BASE_SHIFT_V2 28 +#define QM_SQC_VFT_BASE_MASK_V2 GENMASK(15, 0) +#define QM_SQC_VFT_NUM_SHIFT_V2 45 +#define QM_SQC_VFT_NUM_MASK_V2 GENMASK(9, 0) +#define QM_MAX_QC_TYPE 2 + +#define QM_ABNORMAL_INT_SOURCE 0x100000 +#define QM_ABNORMAL_INT_MASK 0x100004 +#define QM_ABNORMAL_INT_STATUS 0x100008 +#define QM_ABNORMAL_INT_SET 0x10000c +#define QM_ABNORMAL_INF00 0x100010 +#define QM_FIFO_OVERFLOW_TYPE 0xc0 +#define QM_FIFO_OVERFLOW_TYPE_SHIFT 6 +#define QM_FIFO_OVERFLOW_VF 0x3f +#define QM_FIFO_OVERFLOW_QP_SHIFT 16 +#define QM_ABNORMAL_INF01 0x100014 +#define QM_DB_TIMEOUT_TYPE 0xc0 +#define QM_DB_TIMEOUT_TYPE_SHIFT 6 +#define QM_DB_TIMEOUT_VF 0x3f +#define QM_DB_TIMEOUT_QP_SHIFT 16 +#define QM_ABNORMAL_INF02 0x100018 +#define QM_AXI_POISON_ERR BIT(22) +#define QM_RAS_CE_ENABLE 0x1000ec +#define QM_RAS_FE_ENABLE 0x1000f0 +#define QM_RAS_NFE_ENABLE 0x1000f4 +#define QM_RAS_CE_THRESHOLD 0x1000f8 +#define QM_RAS_CE_TIMES_PER_IRQ 1 +#define QM_OOO_SHUTDOWN_SEL 0x1040f8 +#define QM_AXI_RRESP_ERR BIT(0) +#define QM_DB_TIMEOUT BIT(10) +#define QM_OF_FIFO_OF BIT(11) +#define QM_RAS_AXI_ERROR (BIT(0) | BIT(1) | BIT(12)) +#define QM_RAS_MASK_ALL GENMASK(31, 0) +#define QM_RAS_CLEAR_ALL GENMASK(31, 0) + +#define QM_RESET_WAIT_TIMEOUT 400 +#define QM_PEH_VENDOR_ID 0x1000d8 +#define ACC_VENDOR_ID_VALUE 0x5a5a +#define QM_PEH_DFX_INFO0 0x1000fc +#define QM_PEH_DFX_INFO1 0x100100 +#define QM_PEH_DFX_MASK (BIT(0) | BIT(2)) +#define QM_PEH_MSI_FINISH_MASK GENMASK(19, 16) +#define ACC_PEH_SRIOV_CTRL_VF_MSE_SHIFT 3 +#define ACC_PEH_MSI_DISABLE GENMASK(31, 0) +#define ACC_MASTER_GLOBAL_CTRL_SHUTDOWN 0x1 +#define ACC_MASTER_TRANS_RETURN_RW 3 +#define ACC_MASTER_TRANS_RETURN 0x300150 +#define ACC_MASTER_GLOBAL_CTRL 0x300000 +#define ACC_AM_CFG_PORT_WR_EN 0x30001c +#define ACC_AM_ROB_ECC_INT_STS 0x300104 +#define ACC_ROB_ECC_ERR_MULTPL BIT(1) +#define QM_MSI_CAP_ENABLE BIT(16) + +/* interfunction communication */ +#define QM_IFC_READY_STATUS 0x100128 +#define QM_IFC_INT_SET_P 0x100130 +#define QM_IFC_INT_CFG 0x100134 +#define QM_IFC_INT_SOURCE_P 0x100138 +#define QM_IFC_INT_SOURCE_V 0x0020 +#define QM_IFC_INT_MASK 0x0024 +#define QM_IFC_INT_STATUS 0x0028 +#define QM_IFC_INT_SET_V 0x002C +#define QM_PF2VF_PF_W 0x104700 +#define QM_VF2PF_PF_R 0x104800 +#define QM_VF2PF_VF_W 0x320 +#define QM_PF2VF_VF_R 0x380 +#define QM_IFC_SEND_ALL_VFS GENMASK(6, 0) +#define QM_IFC_INT_SOURCE_CLR GENMASK(63, 0) +#define QM_IFC_INT_SOURCE_MASK BIT(0) +#define QM_IFC_INT_DISABLE BIT(0) +#define QM_IFC_INT_STATUS_MASK BIT(0) +#define QM_IFC_INT_SET_MASK BIT(0) +#define QM_WAIT_DST_ACK 1000 +#define QM_MAX_PF_WAIT_COUNT 20 +#define QM_MAX_VF_WAIT_COUNT 40 +#define QM_VF_RESET_WAIT_US 20000 +#define QM_VF_RESET_WAIT_CNT 3000 +#define QM_VF2PF_REG_SIZE 4 +#define QM_IFC_CMD_MASK GENMASK(31, 0) +#define QM_IFC_DATA_SHIFT 32 +#define QM_VF_RESET_WAIT_TIMEOUT_US \ + (QM_VF_RESET_WAIT_US * QM_VF_RESET_WAIT_CNT) + +#define POLL_PERIOD 10 +#define POLL_TIMEOUT 1000 +#define WAIT_PERIOD_US_MAX 200 +#define WAIT_PERIOD_US_MIN 100 +#define MAX_WAIT_COUNTS 1000 +#define QM_CACHE_WB_START 0x204 +#define QM_CACHE_WB_DONE 0x208 +#define QM_FUNC_CAPS_REG 0x3100 +#define QM_CAPBILITY_VERSION GENMASK(7, 0) + +#define PCI_BAR_2 2 +#define PCI_BAR_4 4 +#define QMC_ALIGN(sz) ALIGN(sz, 32) + +#define QM_DBG_READ_LEN 256 +#define QM_PCI_COMMAND_INVALID ~0 +#define QM_RESET_STOP_TX_OFFSET 1 +#define QM_RESET_STOP_RX_OFFSET 2 + +#define WAIT_PERIOD 20 +#define REMOVE_WAIT_DELAY 10 + +#define QM_QOS_PARAM_NUM 2 +#define QM_QOS_MAX_VAL 1000 +#define QM_QOS_RATE 100 +#define QM_QOS_EXPAND_RATE 1000 +#define QM_SHAPER_CIR_B_MASK GENMASK(7, 0) +#define QM_SHAPER_CIR_U_MASK GENMASK(10, 8) +#define QM_SHAPER_CIR_S_MASK GENMASK(14, 11) +#define QM_SHAPER_FACTOR_CIR_U_SHIFT 8 +#define QM_SHAPER_FACTOR_CIR_S_SHIFT 11 +#define QM_SHAPER_FACTOR_CBS_B_SHIFT 15 +#define QM_SHAPER_FACTOR_CBS_S_SHIFT 19 +#define QM_SHAPER_CBS_B 1 +#define QM_SHAPER_VFT_OFFSET 6 +#define QM_QOS_MIN_ERROR_RATE 5 +#define QM_SHAPER_MIN_CBS_S 8 +#define QM_QOS_TICK 0x300U +#define QM_QOS_DIVISOR_CLK 0x1f40U +#define QM_QOS_MAX_CIR_B 200 +#define QM_QOS_MIN_CIR_B 100 +#define QM_QOS_MAX_CIR_U 6 +#define QM_AUTOSUSPEND_DELAY 3000 + +#define QM_DB_DROP_ALL_FUNC_ENABLE GENMASK(63, 0) +#define QM_DB_DROP_ALL_FUNC_DISABLE 0 +#define QM_DEV_DB_DROP 0x0100250 +#define QM_FUN_DB_DROP 0x0038 + +/* qm function err mask */ +#define QM_FUNC_AXI_ERR_ST0 0x100280 +#define QM_RAS_FUNC_ERROR (BIT(0) | BIT(1)) +#define QM_FUNC_RAS_CLEAR_ALL GENMASK(63, 0) + +/* qm isolation state mask */ +#define QM_ISOLATED_STATE BIT(31) +#define QM_ISOLATED_THRESHOLD_MASK GENMASK(15, 0) + + /* abnormal status value for stopping queue */ +#define QM_STOP_QUEUE_FAIL 1 +#define QM_DUMP_SQC_FAIL 3 +#define QM_DUMP_CQC_FAIL 4 +#define QM_FINISH_WAIT 5 + +#define QM_MK_CQC_DW3_V1(hop_num, pg_sz, buf_sz, cqe_sz) \ + (((hop_num) << QM_CQ_HOP_NUM_SHIFT) | \ + ((pg_sz) << QM_CQ_PAGE_SIZE_SHIFT) | \ + ((buf_sz) << QM_CQ_BUF_SIZE_SHIFT) | \ + ((cqe_sz) << QM_CQ_CQE_SIZE_SHIFT)) + +#define QM_MK_CQC_DW3_V2(cqe_sz, cq_depth) \ + ((((u32)cq_depth) - 1) | ((cqe_sz) << QM_CQ_CQE_SIZE_SHIFT)) + +#define QM_MK_SQC_W13(priority, orders, alg_type) \ + (((priority) << QM_SQ_PRIORITY_SHIFT) | \ + ((orders) << QM_SQ_ORDERS_SHIFT) | \ + (((alg_type) & QM_SQ_TYPE_MASK) << QM_SQ_TYPE_SHIFT)) + +#define QM_MK_SQC_DW3_V1(hop_num, pg_sz, buf_sz, sqe_sz) \ + (((hop_num) << QM_SQ_HOP_NUM_SHIFT) | \ + ((pg_sz) << QM_SQ_PAGE_SIZE_SHIFT) | \ + ((buf_sz) << QM_SQ_BUF_SIZE_SHIFT) | \ + ((u32)ilog2(sqe_sz) << QM_SQ_SQE_SIZE_SHIFT)) + +#define QM_MK_SQC_DW3_V2(sqe_sz, sq_depth) \ + ((((u32)sq_depth) - 1) | ((u32)ilog2(sqe_sz) << QM_SQ_SQE_SIZE_SHIFT)) + +enum vft_type { + SQC_VFT = 0, + CQC_VFT, + SHAPER_VFT, +}; + +enum qm_alg_type { + ALG_TYPE_0, + ALG_TYPE_1, +}; + +/* + * Message format for QM_VF_GET_ISOLATE and QM_PF_SET_ISOLATE commands + * + * These commands use a 32-bit command field (cmd) and 32-bit data field (data) + * + * Command behavior: + * - QM_VF_GET_ISOLATE: VF requests isolation status and threshold + * - QM_PF_SET_ISOLATE: PF sets isolation status and threshold + * + * Data field bit layout: + * - bit31 (MSB): Isolation status flag (1 = isolated, 0 = non-isolated) + * - bit15-0 (16 LSB): Isolation threshold value + * - bit30-16 (15 bits): Reserved + */ +enum qm_ifc_cmd { + QM_PF_FLR_PREPARE = 0x01, + QM_PF_SRST_PREPARE, + QM_PF_RESET_DONE, + QM_VF_PREPARE_DONE, + QM_VF_PREPARE_FAIL, + QM_VF_START_DONE, + QM_VF_START_FAIL, + QM_PF_SET_QOS, + QM_VF_GET_QOS, + QM_FUNCTION_RESET, + QM_VF_GET_ISOLATE, + QM_PF_SET_ISOLATE, +}; + +enum qm_basic_type { + QM_TOTAL_QP_NUM_CAP = 0x0, + QM_FUNC_MAX_QP_CAP, + QM_XEQ_DEPTH_CAP, + QM_QP_DEPTH_CAP, + QM_EQ_IRQ_TYPE_CAP, + QM_AEQ_IRQ_TYPE_CAP, + QM_ABN_IRQ_TYPE_CAP, + QM_PF2VF_IRQ_TYPE_CAP, + QM_PF_IRQ_NUM_CAP, + QM_VF_IRQ_NUM_CAP, +}; + +enum qm_cap_table_type { + QM_CAP_VF = 0x0, + QM_AEQE_NUM, + QM_SCQE_NUM, + QM_EQ_IRQ, + QM_AEQ_IRQ, + QM_ABNORMAL_IRQ, + QM_MB_IRQ, + MAX_IRQ_NUM, + EXT_BAR_INDEX, +}; + +static const struct hisi_qm_cap_query_info qm_cap_query_info[] = { + {QM_CAP_VF, "QM_CAP_VF ", 0x3100, 0x0, 0x0, 0x6F01}, + {QM_AEQE_NUM, "QM_AEQE_NUM ", 0x3104, 0x800, 0x4000800, 0x4000800}, + {QM_SCQE_NUM, "QM_SCQE_NUM ", + 0x3108, 0x4000400, 0x4000400, 0x4000400}, + {QM_EQ_IRQ, "QM_EQ_IRQ ", 0x310c, 0x10000, 0x10000, 0x10000}, + {QM_AEQ_IRQ, "QM_AEQ_IRQ ", 0x3110, 0x0, 0x10001, 0x10001}, + {QM_ABNORMAL_IRQ, "QM_ABNORMAL_IRQ ", 0x3114, 0x0, 0x10003, 0x10003}, + {QM_MB_IRQ, "QM_MB_IRQ ", 0x3118, 0x0, 0x0, 0x10002}, + {MAX_IRQ_NUM, "MAX_IRQ_NUM ", 0x311c, 0x10001, 0x40002, 0x40003}, + {EXT_BAR_INDEX, "EXT_BAR_INDEX ", 0x3120, 0x0, 0x0, 0x14}, +}; + +static const struct hisi_qm_cap_info qm_cap_info_comm[] = { + {QM_SUPPORT_DB_ISOLATION, 0x30, 0, BIT(0), 0x0, 0x0, 0x0}, + {QM_SUPPORT_FUNC_QOS, 0x3100, 0, BIT(8), 0x0, 0x0, 0x1}, + {QM_SUPPORT_STOP_QP, 0x3100, 0, BIT(9), 0x0, 0x0, 0x1}, + {QM_SUPPORT_STOP_FUNC, 0x3100, 0, BIT(10), 0x0, 0x0, 0x1}, + {QM_SUPPORT_MB_COMMAND, 0x3100, 0, BIT(11), 0x0, 0x0, 0x1}, + {QM_SUPPORT_SVA_PREFETCH, 0x3100, 0, BIT(14), 0x0, 0x0, 0x1}, + {QM_SUPPORT_DAE, 0x3100, 0, BIT(15), 0x0, 0x0, 0x0}, +}; + +static const struct hisi_qm_cap_info qm_cap_info_pf[] = { + {QM_SUPPORT_RPM, 0x3100, 0, BIT(13), 0x0, 0x0, 0x1}, +}; + +static const struct hisi_qm_cap_info qm_cap_info_vf[] = { + {QM_SUPPORT_RPM, 0x3100, 0, BIT(12), 0x0, 0x0, 0x0}, +}; + +static const struct hisi_qm_cap_info qm_basic_info[] = { + {QM_TOTAL_QP_NUM_CAP, 0x100158, 0, GENMASK(10, 0), 0x1000, 0x400, 0x400}, + {QM_FUNC_MAX_QP_CAP, 0x100158, 11, GENMASK(10, 0), 0x1000, 0x400, 0x400}, + {QM_XEQ_DEPTH_CAP, 0x3104, 0, GENMASK(31, 0), 0x800, 0x4000800, 0x4000800}, + {QM_QP_DEPTH_CAP, 0x3108, 0, GENMASK(31, 0), 0x4000400, 0x4000400, 0x4000400}, + {QM_EQ_IRQ_TYPE_CAP, 0x310c, 0, GENMASK(31, 0), 0x10000, 0x10000, 0x10000}, + {QM_AEQ_IRQ_TYPE_CAP, 0x3110, 0, GENMASK(31, 0), 0x0, 0x10001, 0x10001}, + {QM_ABN_IRQ_TYPE_CAP, 0x3114, 0, GENMASK(31, 0), 0x0, 0x10003, 0x10003}, + {QM_PF2VF_IRQ_TYPE_CAP, 0x3118, 0, GENMASK(31, 0), 0x0, 0x0, 0x10002}, + {QM_PF_IRQ_NUM_CAP, 0x311c, 16, GENMASK(15, 0), 0x1, 0x4, 0x4}, + {QM_VF_IRQ_NUM_CAP, 0x311c, 0, GENMASK(15, 0), 0x1, 0x2, 0x3}, +}; + +struct qm_mailbox { + __le16 w0; + __le16 queue_num; + __le32 base_l; + __le32 base_h; + __le32 rsvd; +}; + +struct qm_doorbell { + __le16 queue_num; + __le16 cmd; + __le16 index; + __le16 priority; +}; + +struct hisi_qm_resource { + struct hisi_qm *qm; + int distance; + struct list_head list; +}; + +/** + * struct qm_hw_err - Structure describing the device errors + * @list: hardware error list + * @timestamp: timestamp when the error occurred + */ +struct qm_hw_err { + struct list_head list; + unsigned long long timestamp; +}; + +struct hisi_qm_hw_ops { + int (*get_vft)(struct hisi_qm *qm, u32 *base, u32 *number); + void (*qm_db)(struct hisi_qm *qm, u16 qn, + u8 cmd, u16 index, u8 priority); + int (*debug_init)(struct hisi_qm *qm); + void (*hw_error_init)(struct hisi_qm *qm); + void (*hw_error_uninit)(struct hisi_qm *qm); + enum acc_err_result (*hw_error_handle)(struct hisi_qm *qm); + int (*set_msi)(struct hisi_qm *qm, bool set); + + /* (u64)msg = (u32)data << 32 | (enum qm_ifc_cmd)cmd */ + int (*set_ifc_begin)(struct hisi_qm *qm, enum qm_ifc_cmd cmd, u32 data, u32 fun_num); + void (*set_ifc_end)(struct hisi_qm *qm); + int (*get_ifc)(struct hisi_qm *qm, enum qm_ifc_cmd *cmd, u32 *data, u32 fun_num); +}; + +struct hisi_qm_hw_error { + u32 int_msk; + const char *msg; +}; + +static const struct hisi_qm_hw_error qm_hw_error[] = { + { .int_msk = BIT(0), .msg = "qm_axi_rresp" }, + { .int_msk = BIT(1), .msg = "qm_axi_bresp" }, + { .int_msk = BIT(2), .msg = "qm_ecc_mbit" }, + { .int_msk = BIT(3), .msg = "qm_ecc_1bit" }, + { .int_msk = BIT(4), .msg = "qm_acc_get_task_timeout" }, + { .int_msk = BIT(5), .msg = "qm_acc_do_task_timeout" }, + { .int_msk = BIT(6), .msg = "qm_acc_wb_not_ready_timeout" }, + { .int_msk = BIT(7), .msg = "qm_sq_cq_vf_invalid" }, + { .int_msk = BIT(8), .msg = "qm_cq_vf_invalid" }, + { .int_msk = BIT(9), .msg = "qm_sq_vf_invalid" }, + { .int_msk = BIT(10), .msg = "qm_db_timeout" }, + { .int_msk = BIT(11), .msg = "qm_of_fifo_of" }, + { .int_msk = BIT(12), .msg = "qm_db_random_invalid" }, + { .int_msk = BIT(13), .msg = "qm_mailbox_timeout" }, + { .int_msk = BIT(14), .msg = "qm_flr_timeout" }, +}; + +static const char * const qm_db_timeout[] = { + "sq", "cq", "eq", "aeq", +}; + +static const char * const qm_fifo_overflow[] = { + "cq", "eq", "aeq", +}; + +struct qm_typical_qos_table { + u32 start; + u32 end; + u32 val; +}; + +/* the qos step is 100 */ +static struct qm_typical_qos_table shaper_cir_s[] = { + {100, 100, 4}, + {200, 200, 3}, + {300, 500, 2}, + {600, 1000, 1}, + {1100, 100000, 0}, +}; + +static struct qm_typical_qos_table shaper_cbs_s[] = { + {100, 200, 9}, + {300, 500, 11}, + {600, 1000, 12}, + {1100, 10000, 16}, + {10100, 25000, 17}, + {25100, 50000, 18}, + {50100, 100000, 19} +}; + +static void qm_irqs_unregister(struct hisi_qm *qm); +static int qm_reset_device(struct hisi_qm *qm); +static void hisi_qm_stop_qp(struct hisi_qp *qp); +static int qm_restart(struct hisi_qm *qm); + +int hisi_qm_q_num_set(const char *val, const struct kernel_param *kp, + unsigned int device) +{ + struct pci_dev *pdev; + u32 n, q_num; + int ret; + + if (!val) + return -EINVAL; + + pdev = pci_get_device(PCI_VENDOR_ID_HUAWEI, device, NULL); + if (!pdev) { + q_num = min_t(u32, QM_QNUM_V1, QM_QNUM_V2); + pr_info("No device found currently, suppose queue number is %u\n", + q_num); + } else { + if (pdev->revision == QM_HW_V1) + q_num = QM_QNUM_V1; + else + q_num = QM_QNUM_V2; + + pci_dev_put(pdev); + } + + ret = kstrtou32(val, 10, &n); + if (ret || n < QM_MIN_QNUM || n > q_num) + return -EINVAL; + + return param_set_int(val, kp); +} +EXPORT_SYMBOL_GPL(hisi_qm_q_num_set); + +static u32 qm_get_hw_error_status(struct hisi_qm *qm) +{ + return readl(qm->io_base + QM_ABNORMAL_INT_STATUS); +} + +static u32 qm_get_dev_err_status(struct hisi_qm *qm) +{ + return qm->err_ini->get_dev_hw_err_status(qm); +} + +/* Check if the error causes the master ooo block */ +static bool qm_check_dev_error(struct hisi_qm *qm) +{ + struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(qm->pdev)); + u32 err_status; + + if (pf_qm->fun_type == QM_HW_VF) + return false; + + err_status = qm_get_hw_error_status(pf_qm); + if (err_status & pf_qm->err_info.qm_err.shutdown_mask) + return true; + + if (pf_qm->err_ini->dev_is_abnormal) + return pf_qm->err_ini->dev_is_abnormal(pf_qm); + + return false; +} + +static int qm_wait_reset_finish(struct hisi_qm *qm) +{ + int delay = 0; + + /* All reset requests need to be queued for processing */ + while (test_and_set_bit(QM_RESETTING, &qm->misc_ctl)) { + msleep(++delay); + if (delay > QM_RESET_WAIT_TIMEOUT) + return -EBUSY; + } + + return 0; +} + +static void qm_fun_db_ctrl(struct hisi_qm *qm, bool enable) +{ + u32 val; + + if (qm->ver >= QM_HW_V5) { + val = readl(qm->io_base + QM_FUN_DB_DROP); + val = enable ? (val | BIT(0)) : (val & ~BIT(0)); + + writel(val, qm->io_base + QM_FUN_DB_DROP); + } +} + +static void qm_dev_db_ctrl(struct hisi_qm *qm, bool enable) +{ + u64 val; + + if (qm->ver >= QM_HW_V5 && qm->fun_type == QM_HW_PF) { + val = enable ? QM_DB_DROP_ALL_FUNC_ENABLE : QM_DB_DROP_ALL_FUNC_DISABLE; + + writeq(val, qm->io_base + QM_DEV_DB_DROP); + } +} + +static int qm_reset_prepare_ready(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(pdev)); + + /* + * PF and VF on host doesnot support resetting at the + * same time on Kunpeng920. + */ + if (qm->ver < QM_HW_V3) + return qm_wait_reset_finish(pf_qm); + + return qm_wait_reset_finish(qm); +} + +static void qm_reset_bit_clear(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(pdev)); + + if (qm->ver < QM_HW_V3) + clear_bit(QM_RESETTING, &pf_qm->misc_ctl); + + clear_bit(QM_RESETTING, &qm->misc_ctl); +} + +static void qm_mb_pre_init(struct qm_mailbox *mailbox, u8 cmd, + u64 base, u16 queue, bool op) +{ + mailbox->w0 = cpu_to_le16((cmd) | + ((op) ? 0x1 << QM_MB_OP_SHIFT : 0) | + (0x1 << QM_MB_BUSY_SHIFT)); + mailbox->queue_num = cpu_to_le16(queue); + mailbox->base_l = cpu_to_le32(lower_32_bits(base)); + mailbox->base_h = cpu_to_le32(upper_32_bits(base)); + mailbox->rsvd = 0; +} + +/* + * The mailbox is 128 bits and requires a single read/write operation. + * Since there is no general 128-bit IO memory access API in the current + * ARM64 architecture, this needs to be implemented in the driver. + */ +static struct qm_mailbox qm_mb_read(struct hisi_qm *qm) +{ + struct qm_mailbox mailbox = {0}; + +#if IS_ENABLED(CONFIG_ARM64) + const void __iomem *fun_base = qm->io_base + QM_MB_CMD_SEND_BASE; + unsigned long tmp0, tmp1; + + asm volatile("ldp %0, %1, %3\n" + "stp %0, %1, %2\n" + : "=&r" (tmp0), + "=&r" (tmp1), + "+Q" (mailbox) + : "Q" (*((char __iomem *)fun_base)) + : "memory"); +#endif + + return mailbox; +} + +/* 128 bit should be written to hardware at one time to trigger a mailbox */ +static void qm_mb_write(struct hisi_qm *qm, const void *src) +{ +#if IS_ENABLED(CONFIG_ARM64) + void __iomem *fun_base = qm->io_base + QM_MB_CMD_SEND_BASE; + unsigned long tmp0, tmp1; + /* + * The dmb oshst instruction ensures that the data in the + * mailbox is written before it is sent to the hardware. + */ + asm volatile("ldp %0, %1, %3\n" + "dmb oshst\n" + "stp %0, %1, %2\n" + : "=&r" (tmp0), + "=&r" (tmp1), + "+Q" (*((char __iomem *)fun_base)) + : "Q" (*((char *)src)) + : "memory"); +#endif +} + +int hisi_qm_wait_mb_ready(struct hisi_qm *qm) +{ + struct qm_mailbox mailbox = {0}; + int ret; + + ret = read_poll_timeout(qm_mb_read, mailbox, + !(le16_to_cpu(mailbox.w0) & QM_MB_BUSY_MASK), + POLL_PERIOD, POLL_TIMEOUT, + true, qm); + if (ret) + dev_err(&qm->pdev->dev, "QM mailbox is busy to start!\n"); + + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_wait_mb_ready); + +static int qm_wait_mb_finish(struct hisi_qm *qm, struct qm_mailbox *mailbox, u32 wait_timeout) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + ret = read_poll_timeout(qm_mb_read, *mailbox, + !(le16_to_cpu(mailbox->w0) & QM_MB_BUSY_MASK), + POLL_PERIOD, wait_timeout, + true, qm); + if (ret) { + dev_err(dev, "QM mailbox operation timeout!\n"); + return ret; + } + + if (le16_to_cpu(mailbox->w0) & QM_MB_STATUS_MASK) { + dev_err(dev, "QM mailbox operation failed!\n"); + return -EIO; + } + + return 0; +} + +static int qm_mb_nolock(struct hisi_qm *qm, struct qm_mailbox *mailbox, u32 wait_timeout) +{ + int ret; + + ret = hisi_qm_wait_mb_ready(qm); + if (ret) + goto mb_err_cnt_increase; + + qm_mb_write(qm, mailbox); + + ret = qm_wait_mb_finish(qm, mailbox, wait_timeout); + if (ret) + goto mb_err_cnt_increase; + + return 0; + +mb_err_cnt_increase: + atomic64_inc(&qm->debug.dfx.mb_err_cnt); + return ret; +} + +int hisi_qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue, + bool op) +{ + struct qm_mailbox mailbox; + u32 wait_timeout; + int ret; + + if (cmd == QM_MB_CMD_STOP_QP || cmd == QM_MB_CMD_FLUSH_QM) + wait_timeout = QM_MB_MAX_STOP_TIMEOUT; + else + wait_timeout = QM_MB_MAX_WAIT_TIMEOUT; + + /* No need to judge if master OOO is blocked. */ + if (qm_check_dev_error(qm)) { + dev_err(&qm->pdev->dev, "QM mailbox operation failed since qm is stop!\n"); + return -EIO; + } + + qm_mb_pre_init(&mailbox, cmd, dma_addr, queue, op); + + mutex_lock(&qm->mailbox_lock); + ret = qm_mb_nolock(qm, &mailbox, wait_timeout); + mutex_unlock(&qm->mailbox_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_mb); + +int hisi_qm_mb_read(struct hisi_qm *qm, u64 *base, u8 cmd, u16 queue) +{ + struct qm_mailbox mailbox; + int ret; + + qm_mb_pre_init(&mailbox, cmd, 0, queue, 1); + mutex_lock(&qm->mailbox_lock); + ret = qm_mb_nolock(qm, &mailbox, QM_MB_MAX_WAIT_TIMEOUT); + mutex_unlock(&qm->mailbox_lock); + if (ret) + return ret; + + *base = le32_to_cpu(mailbox.base_l) | + ((u64)le32_to_cpu(mailbox.base_h) << 32); + + return 0; +} +EXPORT_SYMBOL_GPL(hisi_qm_mb_read); + +/* op 0: set xqc information to hardware, 1: get xqc information from hardware. */ +int qm_set_and_get_xqc(struct hisi_qm *qm, u8 cmd, void *xqc, u32 qp_id, bool op) +{ + struct qm_mailbox mailbox; + dma_addr_t xqc_dma; + void *tmp_xqc; + size_t size; + int ret; + + switch (cmd) { + case QM_MB_CMD_SQC: + size = sizeof(struct qm_sqc); + tmp_xqc = qm->xqc_buf.sqc; + xqc_dma = qm->xqc_buf.sqc_dma; + break; + case QM_MB_CMD_CQC: + size = sizeof(struct qm_cqc); + tmp_xqc = qm->xqc_buf.cqc; + xqc_dma = qm->xqc_buf.cqc_dma; + break; + case QM_MB_CMD_EQC: + size = sizeof(struct qm_eqc); + tmp_xqc = qm->xqc_buf.eqc; + xqc_dma = qm->xqc_buf.eqc_dma; + break; + case QM_MB_CMD_AEQC: + size = sizeof(struct qm_aeqc); + tmp_xqc = qm->xqc_buf.aeqc; + xqc_dma = qm->xqc_buf.aeqc_dma; + break; + default: + dev_err(&qm->pdev->dev, "unknown mailbox cmd %u\n", cmd); + return -EINVAL; + } + + /* Setting xqc will fail if master OOO is blocked. */ + if (qm_check_dev_error(qm)) { + dev_err(&qm->pdev->dev, "failed to send mailbox since qm is stop!\n"); + return -EIO; + } + + mutex_lock(&qm->mailbox_lock); + if (!op) + memcpy(tmp_xqc, xqc, size); + + qm_mb_pre_init(&mailbox, cmd, xqc_dma, qp_id, op); + ret = qm_mb_nolock(qm, &mailbox, QM_MB_MAX_WAIT_TIMEOUT); + if (!ret && op) + memcpy(xqc, tmp_xqc, size); + + mutex_unlock(&qm->mailbox_lock); + + return ret; +} + +static void qm_db_v1(struct hisi_qm *qm, u16 qn, u8 cmd, u16 index, u8 priority) +{ + u64 doorbell; + + doorbell = qn | ((u64)cmd << QM_DB_CMD_SHIFT_V1) | + ((u64)index << QM_DB_INDEX_SHIFT_V1) | + ((u64)priority << QM_DB_PRIORITY_SHIFT_V1); + + writeq(doorbell, qm->io_base + QM_DOORBELL_BASE_V1); +} + +static void qm_db_v2(struct hisi_qm *qm, u16 qn, u8 cmd, u16 index, u8 priority) +{ + void __iomem *io_base = qm->io_base; + u16 randata = 0; + u64 doorbell; + + if (cmd == QM_DOORBELL_CMD_SQ || cmd == QM_DOORBELL_CMD_CQ) + io_base = qm->db_io_base + (u64)qn * qm->db_interval + + QM_DOORBELL_SQ_CQ_BASE_V2; + else + io_base += QM_DOORBELL_EQ_AEQ_BASE_V2; + + doorbell = qn | ((u64)cmd << QM_DB_CMD_SHIFT_V2) | + ((u64)randata << QM_DB_RAND_SHIFT_V2) | + ((u64)index << QM_DB_INDEX_SHIFT_V2) | + ((u64)priority << QM_DB_PRIORITY_SHIFT_V2); + + writeq(doorbell, io_base); +} + +static void qm_db(struct hisi_qm *qm, u16 qn, u8 cmd, u16 index, u8 priority) +{ + dev_dbg(&qm->pdev->dev, "QM doorbell request: qn=%u, cmd=%u, index=%u\n", + qn, cmd, index); + + qm->ops->qm_db(qm, qn, cmd, index, priority); +} + +static void qm_disable_clock_gate(struct hisi_qm *qm) +{ + u32 val; + + /* if qm enables clock gating in Kunpeng930, qos will be inaccurate. */ + if (qm->ver < QM_HW_V3) + return; + + val = readl(qm->io_base + QM_PM_CTRL); + val |= QM_IDLE_DISABLE; + writel(val, qm->io_base + QM_PM_CTRL); +} + +static int qm_dev_mem_reset(struct hisi_qm *qm) +{ + u32 val; + + writel(0x1, qm->io_base + QM_MEM_START_INIT); + return readl_relaxed_poll_timeout(qm->io_base + QM_MEM_INIT_DONE, val, + val & BIT(0), POLL_PERIOD, + POLL_TIMEOUT); +} + +/** + * hisi_qm_get_hw_info() - Get device information. + * @qm: The qm which want to get information. + * @info_table: Array for storing device information. + * @index: Index in info_table. + * @is_read: Whether read from reg, 0: not support read from reg. + * + * This function returns device information the caller needs. + */ +u32 hisi_qm_get_hw_info(struct hisi_qm *qm, + const struct hisi_qm_cap_info *info_table, + u32 index, bool is_read) +{ + u32 val; + + switch (qm->ver) { + case QM_HW_V1: + return info_table[index].v1_val; + case QM_HW_V2: + return info_table[index].v2_val; + default: + if (!is_read) + return info_table[index].v3_val; + + val = readl(qm->io_base + info_table[index].offset); + return (val >> info_table[index].shift) & info_table[index].mask; + } +} +EXPORT_SYMBOL_GPL(hisi_qm_get_hw_info); + +u32 hisi_qm_get_cap_value(struct hisi_qm *qm, + const struct hisi_qm_cap_query_info *info_table, + u32 index, bool is_read) +{ + u32 val; + + switch (qm->ver) { + case QM_HW_V1: + return info_table[index].v1_val; + case QM_HW_V2: + return info_table[index].v2_val; + default: + if (!is_read) + return info_table[index].v3_val; + + val = readl(qm->io_base + info_table[index].offset); + return val; + } +} +EXPORT_SYMBOL_GPL(hisi_qm_get_cap_value); + +static void qm_get_xqc_depth(struct hisi_qm *qm, u16 *low_bits, + u16 *high_bits, enum qm_basic_type type) +{ + u32 depth; + + depth = hisi_qm_get_hw_info(qm, qm_basic_info, type, qm->cap_ver); + *low_bits = depth & QM_XQ_DEPTH_MASK; + *high_bits = (depth >> QM_XQ_DEPTH_SHIFT) & QM_XQ_DEPTH_MASK; +} + +int hisi_qm_set_algs(struct hisi_qm *qm, u64 alg_msk, const struct qm_dev_alg *dev_algs, + u32 dev_algs_size) +{ + struct device *dev = &qm->pdev->dev; + char *algs, *ptr; + int i; + + if (!qm->uacce) + return 0; + + if (dev_algs_size >= QM_DEV_ALG_MAX_LEN) { + dev_err(dev, "algs size %u is equal or larger than %d.\n", + dev_algs_size, QM_DEV_ALG_MAX_LEN); + return -EINVAL; + } + + algs = devm_kzalloc(dev, QM_DEV_ALG_MAX_LEN, GFP_KERNEL); + if (!algs) + return -ENOMEM; + + for (i = 0; i < dev_algs_size; i++) + if (alg_msk & dev_algs[i].alg_msk) + strcat(algs, dev_algs[i].alg); + + ptr = strrchr(algs, '\n'); + if (ptr) + *ptr = '\0'; + + qm->uacce->algs = algs; + + return 0; +} +EXPORT_SYMBOL_GPL(hisi_qm_set_algs); + +static u32 qm_get_irq_num(struct hisi_qm *qm) +{ + if (qm->fun_type == QM_HW_PF) + return hisi_qm_get_hw_info(qm, qm_basic_info, QM_PF_IRQ_NUM_CAP, qm->cap_ver); + + return hisi_qm_get_hw_info(qm, qm_basic_info, QM_VF_IRQ_NUM_CAP, qm->cap_ver); +} + +static int qm_pm_get_sync(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + if (!test_bit(QM_SUPPORT_RPM, &qm->caps)) + return 0; + + ret = pm_runtime_resume_and_get(dev); + if (ret < 0) { + dev_err(dev, "failed to get_sync(%d).\n", ret); + return ret; + } + + return 0; +} + +static void qm_pm_put_sync(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + + if (!test_bit(QM_SUPPORT_RPM, &qm->caps)) + return; + + pm_runtime_put_autosuspend(dev); +} + +static void qm_cq_head_update(struct hisi_qp *qp) +{ + if (qp->qp_status.cq_head == qp->cq_depth - 1) { + qp->qp_status.cqc_phase = !qp->qp_status.cqc_phase; + qp->qp_status.cq_head = 0; + } else { + qp->qp_status.cq_head++; + } +} + +static void qm_poll_req_cb(struct hisi_qp *qp) +{ + struct qm_cqe *cqe = qp->cqe + qp->qp_status.cq_head; + struct hisi_qm *qm = qp->qm; + + while (QM_CQE_PHASE(cqe) == qp->qp_status.cqc_phase) { + dma_rmb(); + qp->req_cb(qp, qp->sqe + qm->sqe_size * + le16_to_cpu(cqe->sq_head)); + qm_cq_head_update(qp); + cqe = qp->cqe + qp->qp_status.cq_head; + qm_db(qm, qp->qp_id, QM_DOORBELL_CMD_CQ, + qp->qp_status.cq_head, 0); + atomic_dec(&qp->qp_status.used); + + cond_resched(); + } + + /* set c_flag */ + qm_db(qm, qp->qp_id, QM_DOORBELL_CMD_CQ, qp->qp_status.cq_head, 1); +} + +static void qm_work_process(struct work_struct *work) +{ + struct hisi_qm_poll_data *poll_data = + container_of(work, struct hisi_qm_poll_data, work); + struct hisi_qm *qm = poll_data->qm; + u16 eqe_num = poll_data->eqe_num; + struct hisi_qp *qp; + int i; + + for (i = eqe_num - 1; i >= 0; i--) { + qp = &qm->qp_array[poll_data->qp_finish_id[i]]; + if (unlikely(atomic_read(&qp->qp_status.flags) == QP_STOP)) + continue; + + if (qp->event_cb) { + qp->event_cb(qp); + continue; + } + + if (likely(qp->req_cb)) + qm_poll_req_cb(qp); + } +} + +static void qm_get_complete_eqe_num(struct hisi_qm *qm) +{ + struct qm_eqe *eqe = qm->eqe + qm->status.eq_head; + struct hisi_qm_poll_data *poll_data = NULL; + u32 dw0 = le32_to_cpu(eqe->dw0); + u16 eq_depth = qm->eq_depth; + u16 cqn, eqe_num = 0; + + if (QM_EQE_PHASE(dw0) != qm->status.eqc_phase) { + atomic64_inc(&qm->debug.dfx.err_irq_cnt); + qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0); + return; + } + + cqn = dw0 & QM_EQE_CQN_MASK; + if (unlikely(cqn >= qm->qp_num)) + return; + poll_data = &qm->poll_data[cqn]; + + do { + poll_data->qp_finish_id[eqe_num] = dw0 & QM_EQE_CQN_MASK; + eqe_num++; + + if (qm->status.eq_head == eq_depth - 1) { + qm->status.eqc_phase = !qm->status.eqc_phase; + eqe = qm->eqe; + qm->status.eq_head = 0; + } else { + eqe++; + qm->status.eq_head++; + } + + dw0 = le32_to_cpu(eqe->dw0); + if (QM_EQE_PHASE(dw0) != qm->status.eqc_phase) + break; + } while (eqe_num < (eq_depth >> 1) - 1); + + poll_data->eqe_num = eqe_num; + queue_work(qm->wq, &poll_data->work); + qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0); +} + +static irqreturn_t qm_eq_irq(int irq, void *data) +{ + struct hisi_qm *qm = data; + + /* Get qp id of completed tasks and re-enable the interrupt */ + qm_get_complete_eqe_num(qm); + + return IRQ_HANDLED; +} + +static irqreturn_t qm_mb_cmd_irq(int irq, void *data) +{ + struct hisi_qm *qm = data; + u32 val; + + val = readl(qm->io_base + QM_IFC_INT_STATUS); + val &= QM_IFC_INT_STATUS_MASK; + if (!val) + return IRQ_NONE; + + if (test_bit(QM_DRIVER_REMOVING, &qm->misc_ctl)) { + dev_warn(&qm->pdev->dev, "Driver is down, message cannot be processed!\n"); + return IRQ_HANDLED; + } + + schedule_work(&qm->cmd_process); + + return IRQ_HANDLED; +} + +static void qm_set_qp_disable(struct hisi_qp *qp, int offset) +{ + u32 *addr; + + if (qp->is_in_kernel) + return; + + addr = (u32 *)(qp->qdma.va + qp->qdma.size) - offset; + *addr = 1; + + /* make sure setup is completed */ + smp_wmb(); +} + +static void qm_disable_qp(struct hisi_qm *qm, u32 qp_id) +{ + struct hisi_qp *qp = &qm->qp_array[qp_id]; + + qm_set_qp_disable(qp, QM_RESET_STOP_TX_OFFSET); + hisi_qm_stop_qp(qp); + qm_set_qp_disable(qp, QM_RESET_STOP_RX_OFFSET); +} + +static void qm_reset_function(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + if (qm_check_dev_error(qm)) + return; + + ret = qm_reset_prepare_ready(qm); + if (ret) { + dev_err(dev, "reset function not ready\n"); + return; + } + + dev_info(dev, "function reset start...\n"); + ret = hisi_qm_stop(qm, QM_DOWN); + if (ret) { + dev_err(dev, "failed to stop qm when reset function\n"); + goto clear_bit; + } + + ret = qm_restart(qm); + if (ret) + dev_err(dev, "failed to start qm when reset function\n"); + +clear_bit: + qm_reset_bit_clear(qm); + dev_info(dev, "function reset end...\n"); +} + +static irqreturn_t qm_aeq_thread(int irq, void *data) +{ + struct hisi_qm *qm = data; + struct qm_aeqe *aeqe = qm->aeqe + qm->status.aeq_head; + u32 dw0 = le32_to_cpu(aeqe->dw0); + u16 aeq_depth = qm->aeq_depth; + u32 type, qp_id; + + atomic64_inc(&qm->debug.dfx.aeq_irq_cnt); + + if (qm_pm_get_sync(qm)) { + dev_err(&qm->pdev->dev, "failed to get runtime PM for aeq handle\n"); + return IRQ_HANDLED; + } + + while (QM_AEQE_PHASE(dw0) == qm->status.aeqc_phase) { + type = (dw0 >> QM_AEQE_TYPE_SHIFT) & QM_AEQE_TYPE_MASK; + qp_id = dw0 & QM_AEQE_CQN_MASK; + + switch (type) { + case QM_EQ_OVERFLOW: + dev_err(&qm->pdev->dev, "eq overflow, reset function\n"); + qm_reset_function(qm); + return IRQ_HANDLED; + case QM_CQ_OVERFLOW: + dev_err(&qm->pdev->dev, "cq overflow, stop qp(%u)\n", + qp_id); + fallthrough; + case QM_CQE_ERROR: + qm_disable_qp(qm, qp_id); + break; + default: + dev_err(&qm->pdev->dev, "unknown error type %u\n", + type); + break; + } + + if (qm->status.aeq_head == aeq_depth - 1) { + qm->status.aeqc_phase = !qm->status.aeqc_phase; + aeqe = qm->aeqe; + qm->status.aeq_head = 0; + } else { + aeqe++; + qm->status.aeq_head++; + } + dw0 = le32_to_cpu(aeqe->dw0); + } + + qm_db(qm, 0, QM_DOORBELL_CMD_AEQ, qm->status.aeq_head, 0); + + qm_pm_put_sync(qm); + + return IRQ_HANDLED; +} + +static void qm_init_qp_status(struct hisi_qp *qp) +{ + struct hisi_qp_status *qp_status = &qp->qp_status; + + qp_status->sq_tail = 0; + qp_status->cq_head = 0; + qp_status->cqc_phase = true; + atomic_set(&qp_status->used, 0); +} + +static void qm_init_prefetch(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + u32 page_type = 0x0; + + if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps)) + return; + + switch (PAGE_SIZE) { + case SZ_4K: + page_type = 0x0; + break; + case SZ_16K: + page_type = 0x1; + break; + case SZ_64K: + page_type = 0x2; + break; + default: + dev_err(dev, "system page size is not support: %lu, default set to 4KB", + PAGE_SIZE); + } + + writel(page_type, qm->io_base + QM_PAGE_SIZE); +} + +/* + * acc_shaper_para_calc() Get the IR value by the qos formula, the return value + * is the expected qos calculated. + * the formula: + * IR = X Mbps if ir = 1 means IR = 100 Mbps, if ir = 10000 means = 10Gbps + * + * IR_b * (2 ^ IR_u) * 8000 + * IR(Mbps) = ------------------------- + * Tick * (2 ^ IR_s) + */ +static u32 acc_shaper_para_calc(u64 cir_b, u64 cir_u, u64 cir_s) +{ + return ((cir_b * QM_QOS_DIVISOR_CLK) * (1 << cir_u)) / + (QM_QOS_TICK * (1 << cir_s)); +} + +static u32 acc_shaper_calc_cbs_s(u32 ir) +{ + int table_size = ARRAY_SIZE(shaper_cbs_s); + int i; + + for (i = 0; i < table_size; i++) { + if (ir >= shaper_cbs_s[i].start && ir <= shaper_cbs_s[i].end) + return shaper_cbs_s[i].val; + } + + return QM_SHAPER_MIN_CBS_S; +} + +static u32 acc_shaper_calc_cir_s(u32 ir) +{ + int table_size = ARRAY_SIZE(shaper_cir_s); + int i; + + for (i = 0; i < table_size; i++) { + if (ir >= shaper_cir_s[i].start && ir <= shaper_cir_s[i].end) + return shaper_cir_s[i].val; + } + + return 0; +} + +static int qm_get_shaper_para(u32 ir, struct qm_shaper_factor *factor) +{ + u32 cir_b, cir_u, cir_s, ir_calc; + u32 error_rate; + + factor->cbs_s = acc_shaper_calc_cbs_s(ir); + cir_s = acc_shaper_calc_cir_s(ir); + + for (cir_b = QM_QOS_MIN_CIR_B; cir_b <= QM_QOS_MAX_CIR_B; cir_b++) { + for (cir_u = 0; cir_u <= QM_QOS_MAX_CIR_U; cir_u++) { + ir_calc = acc_shaper_para_calc(cir_b, cir_u, cir_s); + + error_rate = QM_QOS_EXPAND_RATE * (u32)abs(ir_calc - ir) / ir; + if (error_rate <= QM_QOS_MIN_ERROR_RATE) { + factor->cir_b = cir_b; + factor->cir_u = cir_u; + factor->cir_s = cir_s; + return 0; + } + } + } + + return -EINVAL; +} + +static void qm_vft_data_cfg(struct hisi_qm *qm, enum vft_type type, u32 base, + u32 number, struct qm_shaper_factor *factor) +{ + u64 tmp = 0; + + if (number > 0) { + switch (type) { + case SQC_VFT: + if (qm->ver == QM_HW_V1) { + tmp = QM_SQC_VFT_BUF_SIZE | + QM_SQC_VFT_SQC_SIZE | + QM_SQC_VFT_INDEX_NUMBER | + QM_SQC_VFT_VALID | + (u64)base << QM_SQC_VFT_START_SQN_SHIFT; + } else { + tmp = (u64)base << QM_SQC_VFT_START_SQN_SHIFT | + QM_SQC_VFT_VALID | + (u64)(number - 1) << QM_SQC_VFT_SQN_SHIFT; + } + break; + case CQC_VFT: + if (qm->ver == QM_HW_V1) { + tmp = QM_CQC_VFT_BUF_SIZE | + QM_CQC_VFT_SQC_SIZE | + QM_CQC_VFT_INDEX_NUMBER | + QM_CQC_VFT_VALID; + } else { + tmp = QM_CQC_VFT_VALID; + } + break; + case SHAPER_VFT: + if (factor) { + tmp = factor->cir_b | + (factor->cir_u << QM_SHAPER_FACTOR_CIR_U_SHIFT) | + (factor->cir_s << QM_SHAPER_FACTOR_CIR_S_SHIFT) | + (QM_SHAPER_CBS_B << QM_SHAPER_FACTOR_CBS_B_SHIFT) | + (factor->cbs_s << QM_SHAPER_FACTOR_CBS_S_SHIFT); + } + break; + /* + * Note: The current logic only needs to handle the above three types + * If new types are added, they need to be supplemented here, + * otherwise undefined behavior may occur. + */ + default: + break; + } + } + + writel(lower_32_bits(tmp), qm->io_base + QM_VFT_CFG_DATA_L); + writel(upper_32_bits(tmp), qm->io_base + QM_VFT_CFG_DATA_H); +} + +static int qm_set_vft_common(struct hisi_qm *qm, enum vft_type type, + u32 fun_num, u32 base, u32 number) +{ + struct qm_shaper_factor *factor = NULL; + unsigned int val; + int ret; + + if (type == SHAPER_VFT && test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps)) + factor = &qm->factor[fun_num]; + + ret = readl_relaxed_poll_timeout(qm->io_base + QM_VFT_CFG_RDY, val, + val & BIT(0), POLL_PERIOD, + POLL_TIMEOUT); + if (ret) + return ret; + + writel(0x0, qm->io_base + QM_VFT_CFG_OP_WR); + writel(type, qm->io_base + QM_VFT_CFG_TYPE); + if (type == SHAPER_VFT) + fun_num |= base << QM_SHAPER_VFT_OFFSET; + + writel(fun_num, qm->io_base + QM_VFT_CFG); + + qm_vft_data_cfg(qm, type, base, number, factor); + + writel(0x0, qm->io_base + QM_VFT_CFG_RDY); + writel(0x1, qm->io_base + QM_VFT_CFG_OP_ENABLE); + + return readl_relaxed_poll_timeout(qm->io_base + QM_VFT_CFG_RDY, val, + val & BIT(0), POLL_PERIOD, + POLL_TIMEOUT); +} + +static int qm_shaper_init_vft(struct hisi_qm *qm, u32 fun_num) +{ + u32 qos = qm->factor[fun_num].func_qos; + int ret, i; + + ret = qm_get_shaper_para(qos * QM_QOS_RATE, &qm->factor[fun_num]); + if (ret) { + dev_err(&qm->pdev->dev, "failed to calculate shaper parameter!\n"); + return ret; + } + writel(qm->type_rate, qm->io_base + QM_SHAPER_CFG); + for (i = ALG_TYPE_0; i <= ALG_TYPE_1; i++) { + /* The base number of queue reuse for different alg type */ + ret = qm_set_vft_common(qm, SHAPER_VFT, fun_num, i, 1); + if (ret) + return ret; + } + + return 0; +} + +/* The config should be conducted after qm_dev_mem_reset() */ +static int qm_set_sqc_cqc_vft(struct hisi_qm *qm, u32 fun_num, u32 base, + u32 number) +{ + int ret, i; + + for (i = SQC_VFT; i <= CQC_VFT; i++) { + ret = qm_set_vft_common(qm, i, fun_num, base, number); + if (ret) + return ret; + } + + /* init default shaper qos val */ + if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps)) { + ret = qm_shaper_init_vft(qm, fun_num); + if (ret) + goto back_sqc_cqc; + } + + return 0; +back_sqc_cqc: + for (i = SQC_VFT; i <= CQC_VFT; i++) + qm_set_vft_common(qm, i, fun_num, 0, 0); + + return ret; +} + +static int qm_get_vft_v2(struct hisi_qm *qm, u32 *base, u32 *number) +{ + u64 sqc_vft; + int ret; + + ret = hisi_qm_mb_read(qm, &sqc_vft, QM_MB_CMD_SQC_VFT_V2, 0); + if (ret) + return ret; + + *base = QM_SQC_VFT_BASE_MASK_V2 & (sqc_vft >> QM_SQC_VFT_BASE_SHIFT_V2); + *number = (QM_SQC_VFT_NUM_MASK_V2 & + (sqc_vft >> QM_SQC_VFT_NUM_SHIFT_V2)) + 1; + + return 0; +} + +static void qm_hw_error_init_v1(struct hisi_qm *qm) +{ + writel(QM_RAS_MASK_ALL, qm->io_base + QM_ABNORMAL_INT_MASK); +} + +static void qm_hw_error_cfg(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *qm_err = &qm->err_info.qm_err; + + qm->error_mask = qm_err->nfe | qm_err->ce | qm_err->fe; + /* clear QM hw residual error source */ + writel(QM_RAS_CLEAR_ALL, qm->io_base + QM_ABNORMAL_INT_SOURCE); + if (qm->ver >= QM_HW_V5) + writeq(QM_FUNC_RAS_CLEAR_ALL, qm->io_base + QM_FUNC_AXI_ERR_ST0); + + /* configure error type */ + writel(qm_err->ce, qm->io_base + QM_RAS_CE_ENABLE); + writel(QM_RAS_CE_TIMES_PER_IRQ, qm->io_base + QM_RAS_CE_THRESHOLD); + writel(qm_err->nfe, qm->io_base + QM_RAS_NFE_ENABLE); + writel(qm_err->fe, qm->io_base + QM_RAS_FE_ENABLE); +} + +static void qm_hw_error_init_v2(struct hisi_qm *qm) +{ + qm_hw_error_cfg(qm); + + writel(~qm->error_mask, qm->io_base + QM_ABNORMAL_INT_MASK); +} + +static void qm_hw_error_uninit_v2(struct hisi_qm *qm) +{ + writel(QM_RAS_MASK_ALL, qm->io_base + QM_ABNORMAL_INT_MASK); +} + +static void qm_hw_error_init_v3(struct hisi_qm *qm) +{ + qm_hw_error_cfg(qm); + + /* enable close master ooo when hardware error happened */ + writel(qm->err_info.qm_err.shutdown_mask, qm->io_base + QM_OOO_SHUTDOWN_SEL); + writel(~qm->error_mask, qm->io_base + QM_ABNORMAL_INT_MASK); +} + +static void qm_hw_error_uninit_v3(struct hisi_qm *qm) +{ + writel(QM_RAS_MASK_ALL, qm->io_base + QM_ABNORMAL_INT_MASK); + + /* disable close master ooo when hardware error happened */ + writel(0x0, qm->io_base + QM_OOO_SHUTDOWN_SEL); +} + +static void qm_log_hw_error(struct hisi_qm *qm, u32 error_status) +{ + const struct hisi_qm_hw_error *err; + struct device *dev = &qm->pdev->dev; + u32 reg_val, type, vf_num, qp_id; + int i; + + for (i = 0; i < ARRAY_SIZE(qm_hw_error); i++) { + err = &qm_hw_error[i]; + if (!(err->int_msk & error_status)) + continue; + + dev_err(dev, "%s [error status=0x%x] found\n", + err->msg, err->int_msk); + + if (err->int_msk & QM_DB_TIMEOUT) { + reg_val = readl(qm->io_base + QM_ABNORMAL_INF01); + type = (reg_val & QM_DB_TIMEOUT_TYPE) >> + QM_DB_TIMEOUT_TYPE_SHIFT; + vf_num = reg_val & QM_DB_TIMEOUT_VF; + qp_id = reg_val >> QM_DB_TIMEOUT_QP_SHIFT; + dev_err(dev, "qm %s doorbell timeout in function %u qp %u\n", + qm_db_timeout[type], vf_num, qp_id); + } else if (err->int_msk & QM_OF_FIFO_OF) { + reg_val = readl(qm->io_base + QM_ABNORMAL_INF00); + type = (reg_val & QM_FIFO_OVERFLOW_TYPE) >> + QM_FIFO_OVERFLOW_TYPE_SHIFT; + vf_num = reg_val & QM_FIFO_OVERFLOW_VF; + qp_id = reg_val >> QM_FIFO_OVERFLOW_QP_SHIFT; + if (type < ARRAY_SIZE(qm_fifo_overflow)) + dev_err(dev, "qm %s fifo overflow in function %u qp %u\n", + qm_fifo_overflow[type], vf_num, qp_id); + else + dev_err(dev, "unknown error type\n"); + } else if (err->int_msk & QM_AXI_RRESP_ERR) { + reg_val = readl(qm->io_base + QM_ABNORMAL_INF02); + if (reg_val & QM_AXI_POISON_ERR) + dev_err(dev, "qm axi poison error happened\n"); + } + } +} + +static enum acc_err_result qm_hw_error_handle_v2(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *qm_err = &qm->err_info.qm_err; + u32 error_status; + + error_status = qm_get_hw_error_status(qm); + if (error_status & qm->error_mask) { + if (error_status & QM_ECC_MBIT) + qm->err_status.is_qm_ecc_mbit = true; + + qm_log_hw_error(qm, error_status); + /* Trigger func reset only when error is detected in bit 0 or bit 1. */ + if ((qm->ver >= QM_HW_V5) && + (error_status & QM_RAS_FUNC_ERROR) && + (error_status & qm_err->reset_mask) == 0) { + writel(error_status, qm->io_base + QM_ABNORMAL_INT_SOURCE); + writel(qm_err->nfe, qm->io_base + QM_RAS_NFE_ENABLE); + return ACC_ERR_NEED_FUNC_RESET; + } + + if (error_status & qm_err->reset_mask) { + /* Disable the same error reporting until device is recovered. */ + writel(qm_err->nfe & (~error_status), qm->io_base + QM_RAS_NFE_ENABLE); + return ACC_ERR_NEED_RESET; + } + + /* Clear error source if not need reset. */ + writel(error_status, qm->io_base + QM_ABNORMAL_INT_SOURCE); + writel(qm_err->nfe, qm->io_base + QM_RAS_NFE_ENABLE); + writel(qm_err->ce, qm->io_base + QM_RAS_CE_ENABLE); + } + + return ACC_ERR_RECOVERED; +} + +static void qm_clear_cmd_interrupt(struct hisi_qm *qm, u64 vf_mask) +{ + u32 val; + + if (qm->fun_type == QM_HW_PF) + writeq(vf_mask, qm->io_base + QM_IFC_INT_SOURCE_P); + + val = readl(qm->io_base + QM_IFC_INT_SOURCE_V); + val |= QM_IFC_INT_SOURCE_MASK; + writel(val, qm->io_base + QM_IFC_INT_SOURCE_V); +} + +static void qm_handle_vf_msg(struct hisi_qm *qm, u32 vf_id) +{ + struct device *dev = &qm->pdev->dev; + enum qm_ifc_cmd cmd; + int ret; + + ret = qm->ops->get_ifc(qm, &cmd, NULL, vf_id); + if (ret) { + dev_err(dev, "failed to get command from VF(%u)!\n", vf_id); + return; + } + + switch (cmd) { + case QM_VF_PREPARE_FAIL: + dev_err(dev, "failed to stop VF(%u)!\n", vf_id); + break; + case QM_VF_START_FAIL: + dev_err(dev, "failed to start VF(%u)!\n", vf_id); + break; + case QM_VF_PREPARE_DONE: + case QM_VF_START_DONE: + break; + default: + dev_err(dev, "unsupported command(0x%x) sent by VF(%u)!\n", cmd, vf_id); + break; + } +} + +static int qm_wait_vf_prepare_finish(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + u32 vfs_num = qm->vfs_num; + int cnt = 0; + int ret = 0; + u64 val; + u32 i; + + if (!qm->vfs_num || !test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) + return 0; + + while (true) { + val = readq(qm->io_base + QM_IFC_INT_SOURCE_P); + /* All VFs send command to PF, break */ + if ((val & GENMASK(vfs_num, 1)) == GENMASK(vfs_num, 1)) + break; + + if (++cnt > QM_MAX_PF_WAIT_COUNT) { + ret = -EBUSY; + break; + } + + msleep(QM_WAIT_DST_ACK); + } + + /* PF check VFs msg */ + for (i = 1; i <= vfs_num; i++) { + if (val & BIT(i)) + qm_handle_vf_msg(qm, i); + else + dev_err(dev, "VF(%u) not ping PF!\n", i); + } + + /* PF clear interrupt to ack VFs */ + qm_clear_cmd_interrupt(qm, val); + + return ret; +} + +static void qm_trigger_vf_interrupt(struct hisi_qm *qm, u32 fun_num) +{ + u32 val; + + val = readl(qm->io_base + QM_IFC_INT_CFG); + val &= ~QM_IFC_SEND_ALL_VFS; + val |= fun_num; + writel(val, qm->io_base + QM_IFC_INT_CFG); + + val = readl(qm->io_base + QM_IFC_INT_SET_P); + val |= QM_IFC_INT_SET_MASK; + writel(val, qm->io_base + QM_IFC_INT_SET_P); +} + +static void qm_trigger_pf_interrupt(struct hisi_qm *qm) +{ + u32 val; + + val = readl(qm->io_base + QM_IFC_INT_SET_V); + val |= QM_IFC_INT_SET_MASK; + writel(val, qm->io_base + QM_IFC_INT_SET_V); +} + +static int qm_ping_single_vf(struct hisi_qm *qm, enum qm_ifc_cmd cmd, u32 data, u32 fun_num) +{ + struct device *dev = &qm->pdev->dev; + int cnt = 0; + u64 val; + int ret; + + ret = qm->ops->set_ifc_begin(qm, cmd, data, fun_num); + if (ret) { + dev_err(dev, "failed to send command to vf(%u)!\n", fun_num); + goto err_unlock; + } + + qm_trigger_vf_interrupt(qm, fun_num); + while (true) { + msleep(QM_WAIT_DST_ACK); + val = readq(qm->io_base + QM_IFC_READY_STATUS); + /* if VF respond, PF notifies VF successfully. */ + if (!(val & BIT(fun_num))) + goto err_unlock; + + if (++cnt > QM_MAX_PF_WAIT_COUNT) { + dev_err(dev, "failed to get response from VF(%u)!\n", fun_num); + ret = -ETIMEDOUT; + break; + } + } + +err_unlock: + qm->ops->set_ifc_end(qm); + return ret; +} + +static int qm_ping_all_vfs(struct hisi_qm *qm, enum qm_ifc_cmd cmd, u32 data) +{ + struct device *dev = &qm->pdev->dev; + u32 vfs_num = qm->vfs_num; + u64 val = 0; + int cnt = 0; + int ret; + u32 i; + + ret = qm->ops->set_ifc_begin(qm, cmd, data, QM_MB_PING_ALL_VFS); + if (ret) { + dev_err(dev, "failed to send command(0x%x) to all vfs!\n", cmd); + qm->ops->set_ifc_end(qm); + return ret; + } + + qm_trigger_vf_interrupt(qm, QM_IFC_SEND_ALL_VFS); + while (true) { + msleep(QM_WAIT_DST_ACK); + val = readq(qm->io_base + QM_IFC_READY_STATUS); + /* If all VFs acked, PF notifies VFs successfully. */ + if (!(val & GENMASK(vfs_num, 1))) { + qm->ops->set_ifc_end(qm); + return 0; + } + + if (++cnt > QM_MAX_PF_WAIT_COUNT) + break; + } + + qm->ops->set_ifc_end(qm); + + /* Check which vf respond timeout. */ + for (i = 1; i <= vfs_num; i++) { + if (val & BIT(i)) + dev_err(dev, "failed to get response from VF(%u)!\n", i); + } + + return -ETIMEDOUT; +} + +static int qm_ping_pf(struct hisi_qm *qm, enum qm_ifc_cmd cmd) +{ + int cnt = 0; + u32 val; + int ret; + + ret = qm->ops->set_ifc_begin(qm, cmd, 0, 0); + if (ret) { + dev_err(&qm->pdev->dev, "failed to send command(0x%x) to PF!\n", cmd); + goto unlock; + } + + qm_trigger_pf_interrupt(qm); + /* Waiting for PF response */ + while (true) { + msleep(QM_WAIT_DST_ACK); + val = readl(qm->io_base + QM_IFC_INT_SET_V); + if (!(val & QM_IFC_INT_STATUS_MASK)) + break; + + if (++cnt > QM_MAX_VF_WAIT_COUNT) { + ret = -ETIMEDOUT; + break; + } + } + +unlock: + qm->ops->set_ifc_end(qm); + + return ret; +} + +static int qm_drain_qm(struct hisi_qm *qm) +{ + return hisi_qm_mb(qm, QM_MB_CMD_FLUSH_QM, 0, 0, 0); +} + +static int qm_stop_qp(struct hisi_qp *qp) +{ + return hisi_qm_mb(qp->qm, QM_MB_CMD_STOP_QP, 0, qp->qp_id, 0); +} + +static int qm_set_msi(struct hisi_qm *qm, bool set) +{ + struct pci_dev *pdev = qm->pdev; + + if (set) { + pci_write_config_dword(pdev, pdev->msi_cap + PCI_MSI_MASK_64, + 0); + } else { + pci_write_config_dword(pdev, pdev->msi_cap + PCI_MSI_MASK_64, + ACC_PEH_MSI_DISABLE); + if (qm->err_status.is_qm_ecc_mbit || + qm->err_status.is_dev_ecc_mbit) + return 0; + + mdelay(1); + if (readl(qm->io_base + QM_PEH_DFX_INFO0)) + return -EFAULT; + } + + return 0; +} + +static void qm_wait_msi_finish(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 cmd = ~0; + int cnt = 0; + u32 val; + int ret; + + while (true) { + pci_read_config_dword(pdev, pdev->msi_cap + + PCI_MSI_PENDING_64, &cmd); + if (!cmd) + break; + + if (++cnt > MAX_WAIT_COUNTS) { + pci_warn(pdev, "failed to empty MSI PENDING!\n"); + break; + } + + udelay(1); + } + + ret = readl_relaxed_poll_timeout(qm->io_base + QM_PEH_DFX_INFO0, + val, !(val & QM_PEH_DFX_MASK), + POLL_PERIOD, POLL_TIMEOUT); + if (ret) + pci_warn(pdev, "failed to empty PEH MSI!\n"); + + ret = readl_relaxed_poll_timeout(qm->io_base + QM_PEH_DFX_INFO1, + val, !(val & QM_PEH_MSI_FINISH_MASK), + POLL_PERIOD, POLL_TIMEOUT); + if (ret) + pci_warn(pdev, "failed to finish MSI operation!\n"); +} + +static int qm_set_msi_v3(struct hisi_qm *qm, bool set) +{ + struct pci_dev *pdev = qm->pdev; + int ret = -ETIMEDOUT; + u32 cmd, i; + + pci_read_config_dword(pdev, pdev->msi_cap, &cmd); + if (set) + cmd |= QM_MSI_CAP_ENABLE; + else + cmd &= ~QM_MSI_CAP_ENABLE; + + pci_write_config_dword(pdev, pdev->msi_cap, cmd); + if (set) { + for (i = 0; i < MAX_WAIT_COUNTS; i++) { + pci_read_config_dword(pdev, pdev->msi_cap, &cmd); + if (cmd & QM_MSI_CAP_ENABLE) + return 0; + + udelay(1); + } + } else { + udelay(WAIT_PERIOD_US_MIN); + qm_wait_msi_finish(qm); + ret = 0; + } + + return ret; +} + +static int qm_set_ifc_begin_v3(struct hisi_qm *qm, enum qm_ifc_cmd cmd, u32 data, u32 fun_num) +{ + struct qm_mailbox mailbox; + u64 msg; + + msg = cmd | (u64)data << QM_IFC_DATA_SHIFT; + + qm_mb_pre_init(&mailbox, QM_MB_CMD_SRC, msg, fun_num, 0); + mutex_lock(&qm->mailbox_lock); + return qm_mb_nolock(qm, &mailbox, QM_MB_MAX_WAIT_TIMEOUT); +} + +static void qm_set_ifc_end_v3(struct hisi_qm *qm) +{ + mutex_unlock(&qm->mailbox_lock); +} + +static int qm_get_ifc_v3(struct hisi_qm *qm, enum qm_ifc_cmd *cmd, u32 *data, u32 fun_num) +{ + u64 msg; + int ret; + + ret = hisi_qm_mb_read(qm, &msg, QM_MB_CMD_DST, fun_num); + if (ret) + return ret; + + *cmd = msg & QM_IFC_CMD_MASK; + + if (data) + *data = msg >> QM_IFC_DATA_SHIFT; + + return 0; +} + +static int qm_set_ifc_begin_v4(struct hisi_qm *qm, enum qm_ifc_cmd cmd, u32 data, u32 fun_num) +{ + uintptr_t offset; + u64 msg; + + if (qm->fun_type == QM_HW_PF) + offset = QM_PF2VF_PF_W; + else + offset = QM_VF2PF_VF_W; + + msg = cmd | (u64)data << QM_IFC_DATA_SHIFT; + + mutex_lock(&qm->ifc_lock); + writeq(msg, qm->io_base + offset); + + return 0; +} + +static void qm_set_ifc_end_v4(struct hisi_qm *qm) +{ + mutex_unlock(&qm->ifc_lock); +} + +static u64 qm_get_ifc_pf(struct hisi_qm *qm, u32 fun_num) +{ + uintptr_t offset; + + offset = QM_VF2PF_PF_R + QM_VF2PF_REG_SIZE * fun_num; + + return (u64)readl(qm->io_base + offset); +} + +static u64 qm_get_ifc_vf(struct hisi_qm *qm) +{ + return readq(qm->io_base + QM_PF2VF_VF_R); +} + +static int qm_get_ifc_v4(struct hisi_qm *qm, enum qm_ifc_cmd *cmd, u32 *data, u32 fun_num) +{ + u64 msg; + + if (qm->fun_type == QM_HW_PF) + msg = qm_get_ifc_pf(qm, fun_num); + else + msg = qm_get_ifc_vf(qm); + + *cmd = msg & QM_IFC_CMD_MASK; + + if (data) + *data = msg >> QM_IFC_DATA_SHIFT; + + return 0; +} + +static const struct hisi_qm_hw_ops qm_hw_ops_v1 = { + .qm_db = qm_db_v1, + .hw_error_init = qm_hw_error_init_v1, + .set_msi = qm_set_msi, +}; + +static const struct hisi_qm_hw_ops qm_hw_ops_v2 = { + .get_vft = qm_get_vft_v2, + .qm_db = qm_db_v2, + .hw_error_init = qm_hw_error_init_v2, + .hw_error_uninit = qm_hw_error_uninit_v2, + .hw_error_handle = qm_hw_error_handle_v2, + .set_msi = qm_set_msi, +}; + +static const struct hisi_qm_hw_ops qm_hw_ops_v3 = { + .get_vft = qm_get_vft_v2, + .qm_db = qm_db_v2, + .hw_error_init = qm_hw_error_init_v3, + .hw_error_uninit = qm_hw_error_uninit_v3, + .hw_error_handle = qm_hw_error_handle_v2, + .set_msi = qm_set_msi_v3, + .set_ifc_begin = qm_set_ifc_begin_v3, + .set_ifc_end = qm_set_ifc_end_v3, + .get_ifc = qm_get_ifc_v3, +}; + +static const struct hisi_qm_hw_ops qm_hw_ops_v4 = { + .get_vft = qm_get_vft_v2, + .qm_db = qm_db_v2, + .hw_error_init = qm_hw_error_init_v3, + .hw_error_uninit = qm_hw_error_uninit_v3, + .hw_error_handle = qm_hw_error_handle_v2, + .set_msi = qm_set_msi_v3, + .set_ifc_begin = qm_set_ifc_begin_v4, + .set_ifc_end = qm_set_ifc_end_v4, + .get_ifc = qm_get_ifc_v4, +}; + +static void *qm_get_avail_sqe(struct hisi_qp *qp) +{ + struct hisi_qp_status *qp_status = &qp->qp_status; + u16 sq_tail = qp_status->sq_tail; + + if (unlikely(atomic_read(&qp->qp_status.used) == qp->sq_depth - 1)) + return NULL; + + return qp->sqe + sq_tail * qp->qm->sqe_size; +} + +static void hisi_qm_unset_hw_reset(struct hisi_qp *qp) +{ + u64 *addr; + + /* Use last 64 bits of DUS to reset status. */ + addr = (u64 *)(qp->qdma.va + qp->qdma.size) - QM_RESET_STOP_TX_OFFSET; + *addr = 0; +} + +static struct hisi_qp *find_shareable_qp(struct hisi_qm *qm, u8 alg_type, bool is_in_kernel) +{ + struct device *dev = &qm->pdev->dev; + struct hisi_qp *share_qp = NULL; + struct hisi_qp *qp; + u32 ref_count = ~0; + int i; + + if (!is_in_kernel) + goto queues_busy; + + for (i = 0; i < qm->qp_num; i++) { + qp = &qm->qp_array[i]; + if (qp->is_in_kernel && qp->alg_type == alg_type && qp->ref_count < ref_count) { + ref_count = qp->ref_count; + share_qp = qp; + } + } + + if (share_qp) { + share_qp->ref_count++; + return share_qp; + } + +queues_busy: + dev_info_ratelimited(dev, "All %u queues of QM are busy and no shareable queue\n", + qm->qp_num); + atomic64_inc(&qm->debug.dfx.create_qp_err_cnt); + return ERR_PTR(-EBUSY); +} + +static struct hisi_qp *qm_create_qp_nolock(struct hisi_qm *qm, u8 alg_type, bool is_in_kernel) +{ + struct device *dev = &qm->pdev->dev; + struct hisi_qp *qp; + int qp_id; + + if (atomic_read(&qm->status.flags) == QM_STOP) { + dev_info_ratelimited(dev, "failed to create qp as qm is stop!\n"); + return ERR_PTR(-EPERM); + } + + /* Try to find a shareable queue when all queues are busy */ + if (qm->qp_in_used == qm->qp_num) + return find_shareable_qp(qm, alg_type, is_in_kernel); + + qp_id = idr_alloc_cyclic(&qm->qp_idr, NULL, 0, qm->qp_num, GFP_ATOMIC); + if (qp_id < 0) { + dev_info_ratelimited(dev, "All %u queues of QM are busy!\n", + qm->qp_num); + atomic64_inc(&qm->debug.dfx.create_qp_err_cnt); + return ERR_PTR(-EBUSY); + } + + qp = &qm->qp_array[qp_id]; + hisi_qm_unset_hw_reset(qp); + memset(qp->cqe, 0, sizeof(struct qm_cqe) * qp->cq_depth); + + qp->event_cb = NULL; + qp->req_cb = NULL; + qp->alg_type = alg_type; + qp->is_in_kernel = is_in_kernel; + qm->qp_in_used++; + qp->ref_count = 1; + + return qp; +} + +/** + * hisi_qm_create_qp() - Create a queue pair from qm. + * @qm: The qm we create a qp from. + * @alg_type: Accelerator specific algorithm type in sqc. + * + * Return created qp, negative error code if failed. + */ +static struct hisi_qp *hisi_qm_create_qp(struct hisi_qm *qm, u8 alg_type) +{ + struct hisi_qp *qp; + int ret; + + ret = qm_pm_get_sync(qm); + if (ret) + return ERR_PTR(ret); + + down_write(&qm->qps_lock); + qp = qm_create_qp_nolock(qm, alg_type, false); + up_write(&qm->qps_lock); + + if (IS_ERR(qp)) + qm_pm_put_sync(qm); + + return qp; +} + +/** + * hisi_qm_release_qp() - Release a qp back to its qm. + * @qp: The qp we want to release. + * + * This function releases the resource of a qp. + */ +static void hisi_qm_release_qp(struct hisi_qp *qp) +{ + struct hisi_qm *qm = qp->qm; + + down_write(&qm->qps_lock); + + qm->qp_in_used--; + idr_remove(&qm->qp_idr, qp->qp_id); + + up_write(&qm->qps_lock); + + qm_pm_put_sync(qm); +} + +static int qm_sq_ctx_cfg(struct hisi_qp *qp, int qp_id, u32 pasid) +{ + struct hisi_qm *qm = qp->qm; + enum qm_hw_ver ver = qm->ver; + struct qm_sqc sqc = {0}; + + if (ver == QM_HW_V1) { + sqc.dw3 = cpu_to_le32(QM_MK_SQC_DW3_V1(0, 0, 0, qm->sqe_size)); + sqc.w8 = cpu_to_le16(qp->sq_depth - 1); + } else { + sqc.dw3 = cpu_to_le32(QM_MK_SQC_DW3_V2(qm->sqe_size, qp->sq_depth)); + sqc.w8 = 0; /* rand_qc */ + } + sqc.w13 = cpu_to_le16(QM_MK_SQC_W13(0, 1, qp->alg_type)); + sqc.base_l = cpu_to_le32(lower_32_bits(qp->sqe_dma)); + sqc.base_h = cpu_to_le32(upper_32_bits(qp->sqe_dma)); + sqc.cq_num = cpu_to_le16(qp_id); + sqc.pasid = cpu_to_le16(pasid); + + if (ver >= QM_HW_V3 && qm->use_sva && !qp->is_in_kernel) + sqc.w11 = cpu_to_le16(QM_QC_PASID_ENABLE << + QM_QC_PASID_ENABLE_SHIFT); + + return qm_set_and_get_xqc(qm, QM_MB_CMD_SQC, &sqc, qp_id, 0); +} + +static int qm_cq_ctx_cfg(struct hisi_qp *qp, int qp_id, u32 pasid) +{ + struct hisi_qm *qm = qp->qm; + enum qm_hw_ver ver = qm->ver; + struct qm_cqc cqc = {0}; + + if (ver == QM_HW_V1) { + cqc.dw3 = cpu_to_le32(QM_MK_CQC_DW3_V1(0, 0, 0, QM_QC_CQE_SIZE)); + cqc.w8 = cpu_to_le16(qp->cq_depth - 1); + } else { + cqc.dw3 = cpu_to_le32(QM_MK_CQC_DW3_V2(QM_QC_CQE_SIZE, qp->cq_depth)); + cqc.w8 = 0; /* rand_qc */ + } + /* + * Enable request finishing interrupts defaultly. + * So, there will be some interrupts until disabling + * this. + */ + cqc.dw6 = cpu_to_le32(1 << QM_CQ_PHASE_SHIFT | 1 << QM_CQ_FLAG_SHIFT); + cqc.base_l = cpu_to_le32(lower_32_bits(qp->cqe_dma)); + cqc.base_h = cpu_to_le32(upper_32_bits(qp->cqe_dma)); + cqc.pasid = cpu_to_le16(pasid); + + if (ver >= QM_HW_V3 && qm->use_sva && !qp->is_in_kernel) + cqc.w11 = cpu_to_le16(QM_QC_PASID_ENABLE); + + return qm_set_and_get_xqc(qm, QM_MB_CMD_CQC, &cqc, qp_id, 0); +} + +static int qm_qp_ctx_cfg(struct hisi_qp *qp, int qp_id, u32 pasid) +{ + int ret; + + qm_init_qp_status(qp); + + ret = qm_sq_ctx_cfg(qp, qp_id, pasid); + if (ret) + return ret; + + return qm_cq_ctx_cfg(qp, qp_id, pasid); +} + +static int qm_start_qp_nolock(struct hisi_qp *qp, unsigned long arg) +{ + struct hisi_qm *qm = qp->qm; + struct device *dev = &qm->pdev->dev; + int qp_id = qp->qp_id; + u32 pasid = arg; + int ret; + + if (atomic_read(&qm->status.flags) == QM_STOP) { + dev_info_ratelimited(dev, "failed to start qp as qm is stop!\n"); + return -EPERM; + } + + ret = qm_qp_ctx_cfg(qp, qp_id, pasid); + if (ret) + return ret; + + atomic_set(&qp->qp_status.flags, QP_START); + dev_dbg(dev, "queue %d started\n", qp_id); + + return 0; +} + +/** + * hisi_qm_start_qp() - Start a qp into running. + * @qp: The qp we want to start to run. + * @arg: Accelerator specific argument. + * + * After this function, qp can receive request from user. Return 0 if + * successful, negative error code if failed. + */ +static int hisi_qm_start_qp(struct hisi_qp *qp, unsigned long arg) +{ + struct hisi_qm *qm = qp->qm; + int ret; + + down_write(&qm->qps_lock); + ret = qm_start_qp_nolock(qp, arg); + up_write(&qm->qps_lock); + + return ret; +} + +/** + * qp_stop_fail_cb() - call request cb. + * @qp: stopped failed qp. + * + * Callback function should be called whether task completed or not. + */ +static void qp_stop_fail_cb(struct hisi_qp *qp) +{ + int qp_used = atomic_read(&qp->qp_status.used); + u16 cur_tail = qp->qp_status.sq_tail; + u16 sq_depth = qp->sq_depth; + u16 cur_head = (cur_tail + sq_depth - qp_used) % sq_depth; + struct hisi_qm *qm = qp->qm; + u16 pos; + int i; + + for (i = 0; i < qp_used; i++) { + pos = (i + cur_head) % sq_depth; + qp->req_cb(qp, qp->sqe + (u32)(qm->sqe_size * pos)); + qm_cq_head_update(qp); + atomic_dec(&qp->qp_status.used); + } +} + +static int qm_wait_qp_empty(struct hisi_qm *qm, u32 *state, u32 qp_id) +{ + struct device *dev = &qm->pdev->dev; + struct qm_sqc sqc; + struct qm_cqc cqc; + int ret, i = 0; + + while (++i) { + ret = qm_set_and_get_xqc(qm, QM_MB_CMD_SQC, &sqc, qp_id, 1); + if (ret) { + dev_err_ratelimited(dev, "Failed to dump sqc!\n"); + *state = QM_DUMP_SQC_FAIL; + return ret; + } + + ret = qm_set_and_get_xqc(qm, QM_MB_CMD_CQC, &cqc, qp_id, 1); + if (ret) { + dev_err_ratelimited(dev, "Failed to dump cqc!\n"); + *state = QM_DUMP_CQC_FAIL; + return ret; + } + + if ((sqc.tail == cqc.tail) && + (QM_SQ_TAIL_IDX(sqc) == QM_CQ_TAIL_IDX(cqc))) + break; + + if (i == MAX_WAIT_COUNTS) { + dev_err(dev, "Fail to empty queue %u!\n", qp_id); + *state = QM_STOP_QUEUE_FAIL; + return -ETIMEDOUT; + } + + usleep_range(WAIT_PERIOD_US_MIN, WAIT_PERIOD_US_MAX); + } + + return 0; +} + +/** + * qm_drain_qp() - Drain a qp. + * @qp: The qp we want to drain. + * + * If the device does not support stopping queue by sending mailbox, + * determine whether the queue is cleared by judging the tail pointers of + * sq and cq. + */ +static int qm_drain_qp(struct hisi_qp *qp) +{ + struct hisi_qm *qm = qp->qm; + u32 state = 0; + int ret; + + /* No need to judge if master OOO is blocked. */ + if (qm_check_dev_error(qm)) + return 0; + + /* HW V3 supports drain qp by device */ + if (test_bit(QM_SUPPORT_STOP_QP, &qm->caps)) { + ret = qm_stop_qp(qp); + if (ret) { + dev_err(&qm->pdev->dev, "Failed to stop qp!\n"); + state = QM_STOP_QUEUE_FAIL; + goto set_dev_state; + } + return ret; + } + + ret = qm_wait_qp_empty(qm, &state, qp->qp_id); + if (ret) + goto set_dev_state; + + return 0; + +set_dev_state: + if (qm->debug.dev_dfx.dev_timeout) + qm->debug.dev_dfx.dev_state = state; + + return ret; +} + +static void qm_stop_qp_nolock(struct hisi_qp *qp) +{ + struct hisi_qm *qm = qp->qm; + struct device *dev = &qm->pdev->dev; + int ret; + + /* + * It is allowed to stop and release qp when reset, If the qp is + * stopped when reset but still want to be released then, the + * is_resetting flag should be set negative so that this qp will not + * be restarted after reset. + */ + if (atomic_read(&qp->qp_status.flags) != QP_START) { + qp->is_resetting = false; + return; + } + + atomic_set(&qp->qp_status.flags, QP_STOP); + + /* V3 supports direct stop function when FLR prepare */ + if (qm->ver < QM_HW_V3 || qm->status.stop_reason == QM_NORMAL) { + ret = qm_drain_qp(qp); + if (ret) + dev_err(dev, "Failed to drain out data for stopping qp(%u)!\n", qp->qp_id); + } + + flush_workqueue(qm->wq); + if (unlikely(qp->is_resetting && atomic_read(&qp->qp_status.used))) + qp_stop_fail_cb(qp); + + dev_dbg(dev, "stop queue %u!", qp->qp_id); +} + +/** + * hisi_qm_stop_qp() - Stop a qp in qm. + * @qp: The qp we want to stop. + * + * This function is reverse of hisi_qm_start_qp. + */ +static void hisi_qm_stop_qp(struct hisi_qp *qp) +{ + down_write(&qp->qm->qps_lock); + qm_stop_qp_nolock(qp); + up_write(&qp->qm->qps_lock); +} + +/** + * hisi_qp_send() - Queue up a task in the hardware queue. + * @qp: The qp in which to put the message. + * @msg: The message. + * + * This function will return -EBUSY if qp is currently full, and -EAGAIN + * if qp related qm is resetting. + * + * Note: This function may run with qm_irq_thread and ACC reset at same time. + * It has no race with qm_irq_thread. However, during hisi_qp_send, ACC + * reset may happen, we have no lock here considering performance. This + * causes current qm_db sending fail or can not receive sended sqe. QM + * sync/async receive function should handle the error sqe. ACC reset + * done function should clear used sqe to 0. + */ +int hisi_qp_send(struct hisi_qp *qp, const void *msg) +{ + struct hisi_qp_status *qp_status = &qp->qp_status; + u16 sq_tail, sq_tail_next; + void *sqe; + + spin_lock_bh(&qp->qp_lock); + if (unlikely(atomic_read(&qp->qp_status.flags) == QP_STOP || + atomic_read(&qp->qm->status.flags) == QM_STOP || + qp->is_resetting)) { + spin_unlock_bh(&qp->qp_lock); + dev_info_ratelimited(&qp->qm->pdev->dev, "QP is stopped or resetting\n"); + return -EAGAIN; + } + + sqe = qm_get_avail_sqe(qp); + if (!sqe) { + spin_unlock_bh(&qp->qp_lock); + return -EBUSY; + } + + sq_tail = qp_status->sq_tail; + sq_tail_next = (sq_tail + 1) % qp->sq_depth; + memcpy(sqe, msg, qp->qm->sqe_size); + qp->msg[sq_tail] = msg; + + qm_db(qp->qm, qp->qp_id, QM_DOORBELL_CMD_SQ, sq_tail_next, 0); + atomic_inc(&qp->qp_status.used); + qp_status->sq_tail = sq_tail_next; + spin_unlock_bh(&qp->qp_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(hisi_qp_send); + +static void hisi_qm_cache_wb(struct hisi_qm *qm) +{ + unsigned int val; + + if (qm->ver == QM_HW_V1) + return; + + writel(0x1, qm->io_base + QM_CACHE_WB_START); + if (readl_relaxed_poll_timeout(qm->io_base + QM_CACHE_WB_DONE, + val, val & BIT(0), POLL_PERIOD, + POLL_TIMEOUT)) + dev_err(&qm->pdev->dev, "QM writeback sqc cache fail!\n"); +} + +static void qm_qp_event_notifier(struct hisi_qp *qp) +{ + wake_up_interruptible(&qp->uacce_q->wait); +} + + /* This function returns free number of qp in qm. */ +static int hisi_qm_get_available_instances(struct uacce_device *uacce) +{ + struct hisi_qm *qm = uacce->priv; + int ret; + + down_read(&qm->qps_lock); + ret = qm->qp_num - qm->qp_in_used; + up_read(&qm->qps_lock); + + return ret; +} + +static void hisi_qm_set_hw_reset(struct hisi_qm *qm, int offset) +{ + int i; + + for (i = 0; i < qm->qp_num; i++) + qm_set_qp_disable(&qm->qp_array[i], offset); +} + +static int hisi_qm_uacce_get_queue(struct uacce_device *uacce, + unsigned long arg, + struct uacce_queue *q) +{ + struct hisi_qm *qm = uacce->priv; + struct hisi_qp *qp; + u8 alg_type = 0; + + qp = hisi_qm_create_qp(qm, alg_type); + if (IS_ERR(qp)) + return PTR_ERR(qp); + + q->priv = qp; + q->uacce = uacce; + qp->uacce_q = q; + qp->event_cb = qm_qp_event_notifier; + qp->pasid = arg; + + return 0; +} + +static void hisi_qm_uacce_put_queue(struct uacce_queue *q) +{ + struct hisi_qp *qp = q->priv; + + hisi_qm_release_qp(qp); +} + +/* map sq/cq/doorbell to user space */ +static int hisi_qm_uacce_mmap(struct uacce_queue *q, + struct vm_area_struct *vma, + struct uacce_qfile_region *qfr) +{ + struct hisi_qp *qp = q->priv; + struct hisi_qm *qm = qp->qm; + resource_size_t phys_base = qm->db_phys_base + + qp->qp_id * qm->db_interval; + size_t sz = vma->vm_end - vma->vm_start; + struct pci_dev *pdev = qm->pdev; + struct device *dev = &pdev->dev; + unsigned long vm_pgoff; + int ret; + + switch (qfr->type) { + case UACCE_QFRT_MMIO: + if (qm->ver == QM_HW_V1) { + if (sz > PAGE_SIZE * QM_DOORBELL_PAGE_NR) + return -EINVAL; + } else if (!test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps)) { + if (sz > PAGE_SIZE * (QM_DOORBELL_PAGE_NR + + QM_DOORBELL_SQ_CQ_BASE_V2 / PAGE_SIZE)) + return -EINVAL; + } else { + if (sz > qm->db_interval) + return -EINVAL; + } + + vm_flags_set(vma, VM_IO); + + return remap_pfn_range(vma, vma->vm_start, + phys_base >> PAGE_SHIFT, + sz, pgprot_noncached(vma->vm_page_prot)); + case UACCE_QFRT_DUS: + if (sz != qp->qdma.size) + return -EINVAL; + + /* + * dma_mmap_coherent() requires vm_pgoff as 0 + * restore vm_pfoff to initial value for mmap() + */ + vm_pgoff = vma->vm_pgoff; + vma->vm_pgoff = 0; + ret = dma_mmap_coherent(dev, vma, qp->qdma.va, + qp->qdma.dma, sz); + vma->vm_pgoff = vm_pgoff; + return ret; + + default: + return -EINVAL; + } +} + +static int hisi_qm_uacce_start_queue(struct uacce_queue *q) +{ + struct hisi_qp *qp = q->priv; + + return hisi_qm_start_qp(qp, qp->pasid); +} + +static void hisi_qm_uacce_stop_queue(struct uacce_queue *q) +{ + struct hisi_qp *qp = q->priv; + struct hisi_qm *qm = qp->qm; + struct qm_dev_dfx *dev_dfx = &qm->debug.dev_dfx; + u32 i = 0; + + hisi_qm_stop_qp(qp); + + if (!dev_dfx->dev_timeout || !dev_dfx->dev_state) + return; + + /* + * After the queue fails to be stopped, + * wait for a period of time before releasing the queue. + */ + while (++i) { + msleep(WAIT_PERIOD); + + /* Since dev_timeout maybe modified, check i >= dev_timeout */ + if (i >= dev_dfx->dev_timeout) { + dev_err(&qm->pdev->dev, "Stop q %u timeout, state %u\n", + qp->qp_id, dev_dfx->dev_state); + dev_dfx->dev_state = QM_FINISH_WAIT; + break; + } + } +} + +static int hisi_qm_is_q_updated(struct uacce_queue *q) +{ + struct hisi_qp *qp = q->priv; + struct qm_cqe *cqe = qp->cqe + qp->qp_status.cq_head; + int updated = 0; + + while (QM_CQE_PHASE(cqe) == qp->qp_status.cqc_phase) { + /* make sure to read data from memory */ + dma_rmb(); + qm_cq_head_update(qp); + cqe = qp->cqe + qp->qp_status.cq_head; + updated = 1; + } + + return updated; +} + +static void qm_set_sqctype(struct uacce_queue *q, u16 type) +{ + struct hisi_qm *qm = q->uacce->priv; + struct hisi_qp *qp = q->priv; + + down_write(&qm->qps_lock); + qp->alg_type = type; + up_write(&qm->qps_lock); +} + +static long hisi_qm_uacce_ioctl(struct uacce_queue *q, unsigned int cmd, + unsigned long arg) +{ + struct hisi_qp *qp = q->priv; + struct hisi_qp_info qp_info; + struct hisi_qp_ctx qp_ctx; + + if (cmd == UACCE_CMD_QM_SET_QP_CTX) { + if (copy_from_user(&qp_ctx, (void __user *)arg, + sizeof(struct hisi_qp_ctx))) + return -EFAULT; + + if (qp_ctx.qc_type > QM_MAX_QC_TYPE) + return -EINVAL; + + qm_set_sqctype(q, qp_ctx.qc_type); + qp_ctx.id = qp->qp_id; + + if (copy_to_user((void __user *)arg, &qp_ctx, + sizeof(struct hisi_qp_ctx))) + return -EFAULT; + + return 0; + } else if (cmd == UACCE_CMD_QM_SET_QP_INFO) { + if (copy_from_user(&qp_info, (void __user *)arg, + sizeof(struct hisi_qp_info))) + return -EFAULT; + + qp_info.sqe_size = qp->qm->sqe_size; + qp_info.sq_depth = qp->sq_depth; + qp_info.cq_depth = qp->cq_depth; + + if (copy_to_user((void __user *)arg, &qp_info, + sizeof(struct hisi_qp_info))) + return -EFAULT; + + return 0; + } + + return -EINVAL; +} + +/** + * qm_hw_err_isolate() - Try to set the isolation status of the uacce device + * according to user's configuration of error threshold. + * @qm: the uacce device + */ +static int qm_hw_err_isolate(struct hisi_qm *qm) +{ + struct qm_hw_err *err, *tmp, *hw_err; + struct qm_err_isolate *isolate; + u32 count = 0; + + isolate = &qm->isolate_data; + +#define SECONDS_PER_HOUR 3600 + + /* All the hw errs are processed by PF driver */ + if (qm->uacce->is_vf || isolate->is_isolate || !isolate->err_threshold) + return 0; + + hw_err = kzalloc_obj(*hw_err); + if (!hw_err) + return -ENOMEM; + + /* + * Time-stamp every slot AER error. Then check the AER error log when the + * next device AER error occurred. if the device slot AER error count exceeds + * the setting error threshold in one hour, the isolated state will be set + * to true. And the AER error logs that exceed one hour will be cleared. + */ + mutex_lock(&isolate->isolate_lock); + hw_err->timestamp = jiffies; + list_for_each_entry_safe(err, tmp, &isolate->qm_hw_errs, list) { + if ((hw_err->timestamp - err->timestamp) / HZ > + SECONDS_PER_HOUR) { + list_del(&err->list); + kfree(err); + } else { + count++; + } + } + list_add(&hw_err->list, &isolate->qm_hw_errs); + + if (count >= isolate->err_threshold) + isolate->is_isolate = true; + mutex_unlock(&isolate->isolate_lock); + + return 0; +} + +static void qm_hw_err_destroy(struct hisi_qm *qm) +{ + struct qm_hw_err *err, *tmp; + + list_for_each_entry_safe(err, tmp, &qm->isolate_data.qm_hw_errs, list) { + list_del(&err->list); + kfree(err); + } +} + +static enum uacce_dev_state hisi_qm_get_isolate_state(struct uacce_device *uacce) +{ + struct hisi_qm *qm = uacce->priv; + struct hisi_qm *pf_qm; + + if (uacce->is_vf) + pf_qm = pci_get_drvdata(pci_physfn(qm->pdev)); + else + pf_qm = qm; + + return pf_qm->isolate_data.is_isolate ? + UACCE_DEV_ISOLATE : UACCE_DEV_NORMAL; +} + +static int hisi_qm_isolate_threshold_write(struct uacce_device *uacce, u32 num) +{ + struct hisi_qm *qm = uacce->priv; + int ret; + + /* Must be set by PF */ + if (uacce->is_vf) + return -EPERM; + + if (qm->isolate_data.is_isolate) + return -EPERM; + + mutex_lock(&qm->isolate_data.isolate_lock); + qm->isolate_data.err_threshold = num; + + /* After the policy is updated, need to reset the hardware err list */ + qm_hw_err_destroy(qm); + + if (!qm->vfs_num) { + mutex_unlock(&qm->isolate_data.isolate_lock); + return 0; + } + + /* Notify all VFs to update the isolation threshold. */ + if (test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) { + ret = qm_ping_all_vfs(qm, QM_PF_SET_ISOLATE, qm->isolate_data.err_threshold); + if (ret) + dev_err(&qm->pdev->dev, "failed to send command to all VFs set isolate!\n"); + } + mutex_unlock(&qm->isolate_data.isolate_lock); + + return 0; +} + +static u32 hisi_qm_isolate_threshold_read(struct uacce_device *uacce) +{ + struct hisi_qm *qm = uacce->priv; + struct hisi_qm *pf_qm; + + if (uacce->is_vf && !test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) { + pf_qm = pci_get_drvdata(pci_physfn(qm->pdev)); + return pf_qm->isolate_data.err_threshold; + } + + return qm->isolate_data.err_threshold; +} + +static const struct uacce_ops uacce_qm_ops = { + .get_available_instances = hisi_qm_get_available_instances, + .get_queue = hisi_qm_uacce_get_queue, + .put_queue = hisi_qm_uacce_put_queue, + .start_queue = hisi_qm_uacce_start_queue, + .stop_queue = hisi_qm_uacce_stop_queue, + .mmap = hisi_qm_uacce_mmap, + .ioctl = hisi_qm_uacce_ioctl, + .is_q_updated = hisi_qm_is_q_updated, + .get_isolate_state = hisi_qm_get_isolate_state, + .isolate_err_threshold_write = hisi_qm_isolate_threshold_write, + .isolate_err_threshold_read = hisi_qm_isolate_threshold_read, +}; + +static void qm_remove_uacce(struct hisi_qm *qm) +{ + struct uacce_device *uacce = qm->uacce; + + if (qm->use_sva) { + mutex_lock(&qm->isolate_data.isolate_lock); + qm_hw_err_destroy(qm); + mutex_unlock(&qm->isolate_data.isolate_lock); + + uacce_remove(uacce); + qm->uacce = NULL; + } +} + +static void qm_uacce_api_ver_init(struct hisi_qm *qm) +{ + struct uacce_device *uacce = qm->uacce; + + switch (qm->ver) { + case QM_HW_V1: + uacce->api_ver = HISI_QM_API_VER_BASE; + break; + case QM_HW_V2: + uacce->api_ver = HISI_QM_API_VER2_BASE; + break; + case QM_HW_V3: + case QM_HW_V4: + uacce->api_ver = HISI_QM_API_VER3_BASE; + break; + default: + uacce->api_ver = HISI_QM_API_VER5_BASE; + break; + } +} + +static int qm_alloc_uacce(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + struct uacce_device *uacce; + unsigned long mmio_page_nr; + unsigned long dus_page_nr; + u16 sq_depth, cq_depth; + struct uacce_interface interface = { + .flags = UACCE_DEV_SVA, + .ops = &uacce_qm_ops, + }; + int ret; + + ret = strscpy(interface.name, dev_driver_string(&pdev->dev), + sizeof(interface.name)); + if (ret < 0) + return -ENAMETOOLONG; + + uacce = uacce_alloc(&pdev->dev, &interface); + if (IS_ERR(uacce)) + return PTR_ERR(uacce); + + if (uacce->flags & UACCE_DEV_SVA) { + qm->use_sva = true; + } else { + /* only consider sva case */ + qm_remove_uacce(qm); + return -EINVAL; + } + + if (qm->fun_type == QM_HW_PF) + uacce->is_vf = false; + else + uacce->is_vf = true; + uacce->priv = qm; + + if (qm->ver == QM_HW_V1) + mmio_page_nr = QM_DOORBELL_PAGE_NR; + else if (!test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps)) + mmio_page_nr = QM_DOORBELL_PAGE_NR + + QM_DOORBELL_SQ_CQ_BASE_V2 / PAGE_SIZE; + else + mmio_page_nr = qm->db_interval / PAGE_SIZE; + + qm_get_xqc_depth(qm, &sq_depth, &cq_depth, QM_QP_DEPTH_CAP); + + /* Add one more page for device or qp status */ + dus_page_nr = (PAGE_SIZE - 1 + qm->sqe_size * sq_depth + + sizeof(struct qm_cqe) * cq_depth + PAGE_SIZE) >> + PAGE_SHIFT; + + uacce->qf_pg_num[UACCE_QFRT_MMIO] = mmio_page_nr; + uacce->qf_pg_num[UACCE_QFRT_DUS] = dus_page_nr; + + qm->uacce = uacce; + qm_uacce_api_ver_init(qm); + INIT_LIST_HEAD(&qm->isolate_data.qm_hw_errs); + mutex_init(&qm->isolate_data.isolate_lock); + + return 0; +} + +int hisi_qm_register_uacce(struct hisi_qm *qm) +{ + int ret; + + if (!qm->uacce) + return 0; + + dev_info(&qm->pdev->dev, "qm register to uacce\n"); + + if (qm->fun_type == QM_HW_VF && test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) { + ret = qm_ping_pf(qm, QM_VF_GET_ISOLATE); + if (ret) + dev_err(&qm->pdev->dev, "failed to send cmd to PF to get isolate!\n"); + } + + return uacce_register(qm->uacce); +} +EXPORT_SYMBOL_GPL(hisi_qm_register_uacce); + +/** + * qm_frozen() - Try to froze QM to cut continuous queue request. If + * there is user on the QM, return failure without doing anything. + * @qm: The qm needed to be fronzen. + * + * This function frozes QM, then we can do SRIOV disabling. + */ +static int qm_frozen(struct hisi_qm *qm) +{ + if (test_bit(QM_DRIVER_REMOVING, &qm->misc_ctl)) + return 0; + + down_write(&qm->qps_lock); + + if (!qm->qp_in_used) { + qm->qp_in_used = qm->qp_num; + up_write(&qm->qps_lock); + set_bit(QM_DRIVER_REMOVING, &qm->misc_ctl); + return 0; + } + + up_write(&qm->qps_lock); + + return -EBUSY; +} + +static int qm_try_frozen_vfs(struct pci_dev *pdev, + struct hisi_qm_list *qm_list) +{ + struct hisi_qm *qm, *vf_qm; + struct pci_dev *dev; + int ret = 0; + + if (!qm_list || !pdev) + return -EINVAL; + + /* Try to frozen all the VFs as disable SRIOV */ + mutex_lock(&qm_list->lock); + list_for_each_entry(qm, &qm_list->list, list) { + dev = qm->pdev; + if (dev == pdev) + continue; + if (pci_physfn(dev) == pdev) { + vf_qm = pci_get_drvdata(dev); + ret = qm_frozen(vf_qm); + if (ret) + goto frozen_fail; + } + } + +frozen_fail: + mutex_unlock(&qm_list->lock); + + return ret; +} + +/** + * hisi_qm_wait_task_finish() - Wait until the task is finished + * when removing the driver. + * @qm: The qm needed to wait for the task to finish. + * @qm_list: The list of all available devices. + */ +void hisi_qm_wait_task_finish(struct hisi_qm *qm, struct hisi_qm_list *qm_list) +{ + while (qm_frozen(qm) || + ((qm->fun_type == QM_HW_PF) && + qm_try_frozen_vfs(qm->pdev, qm_list))) { + msleep(WAIT_PERIOD); + } + + /* Cancel possible RAS reset process during the uninstallation procedure. */ + if (qm->fun_type == QM_HW_PF) + cancel_work_sync(&qm->rst_work); + + if (test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) + flush_work(&qm->cmd_process); + + udelay(REMOVE_WAIT_DELAY); +} +EXPORT_SYMBOL_GPL(hisi_qm_wait_task_finish); + +static void hisi_qp_memory_uninit(struct hisi_qm *qm, int num) +{ + struct device *dev = &qm->pdev->dev; + struct hisi_qp *qp; + int i; + + for (i = num - 1; i >= 0; i--) { + qp = &qm->qp_array[i]; + dma_free_coherent(dev, qp->qdma.size, qp->qdma.va, qp->qdma.dma); + kfree(qp->msg); + kfree(qm->poll_data[i].qp_finish_id); + } + + kfree(qm->poll_data); + kfree(qm->qp_array); +} + +static int hisi_qp_memory_init(struct hisi_qm *qm, size_t dma_size, int id, + u16 sq_depth, u16 cq_depth) +{ + struct device *dev = &qm->pdev->dev; + size_t off = qm->sqe_size * sq_depth; + struct hisi_qp *qp; + int ret = -ENOMEM; + + qm->poll_data[id].qp_finish_id = kcalloc(qm->qp_num, sizeof(u16), + GFP_KERNEL); + if (!qm->poll_data[id].qp_finish_id) + return -ENOMEM; + + qp = &qm->qp_array[id]; + qp->msg = kmalloc_array(sq_depth, sizeof(void *), GFP_KERNEL); + if (!qp->msg) + goto err_free_qp_finish_id; + + qp->qdma.va = dma_alloc_coherent(dev, dma_size, &qp->qdma.dma, + GFP_KERNEL); + if (!qp->qdma.va) + goto err_free_qp_msg; + + qp->sqe = qp->qdma.va; + qp->sqe_dma = qp->qdma.dma; + qp->cqe = qp->qdma.va + off; + qp->cqe_dma = qp->qdma.dma + off; + qp->qdma.size = dma_size; + qp->sq_depth = sq_depth; + qp->cq_depth = cq_depth; + qp->qm = qm; + qp->qp_id = id; + + spin_lock_init(&qp->qp_lock); + spin_lock_init(&qp->backlog.lock); + INIT_LIST_HEAD(&qp->backlog.list); + + return 0; + +err_free_qp_msg: + kfree(qp->msg); +err_free_qp_finish_id: + kfree(qm->poll_data[id].qp_finish_id); + return ret; +} + +static void hisi_qm_pre_init(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + + if (qm->ver == QM_HW_V1) + qm->ops = &qm_hw_ops_v1; + else if (qm->ver == QM_HW_V2) + qm->ops = &qm_hw_ops_v2; + else if (qm->ver == QM_HW_V3) + qm->ops = &qm_hw_ops_v3; + else + qm->ops = &qm_hw_ops_v4; + + pci_set_drvdata(pdev, qm); + mutex_init(&qm->mailbox_lock); + mutex_init(&qm->ifc_lock); + init_rwsem(&qm->qps_lock); + qm->qp_in_used = 0; + if (test_bit(QM_SUPPORT_RPM, &qm->caps)) { + if (!acpi_device_power_manageable(ACPI_COMPANION(&pdev->dev))) + dev_info(&pdev->dev, "_PS0 and _PR0 are not defined"); + } +} + +static void qm_cmd_uninit(struct hisi_qm *qm) +{ + u32 val; + + if (!test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) + return; + + val = readl(qm->io_base + QM_IFC_INT_MASK); + val |= QM_IFC_INT_DISABLE; + writel(val, qm->io_base + QM_IFC_INT_MASK); +} + +static void qm_cmd_init(struct hisi_qm *qm) +{ + u32 val; + + if (!test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) + return; + + /* Clear communication interrupt source */ + qm_clear_cmd_interrupt(qm, QM_IFC_INT_SOURCE_CLR); + + /* Enable pf to vf communication reg. */ + val = readl(qm->io_base + QM_IFC_INT_MASK); + val &= ~QM_IFC_INT_DISABLE; + writel(val, qm->io_base + QM_IFC_INT_MASK); +} + +static void qm_put_pci_res(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + + if (test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps)) + iounmap(qm->db_io_base); + + iounmap(qm->io_base); + pci_release_mem_regions(pdev); +} + +static void hisi_mig_region_clear(struct hisi_qm *qm) +{ + u32 val; + + /* Clear migration region set of PF */ + if (qm->fun_type == QM_HW_PF && qm->ver > QM_HW_V3) { + val = readl(qm->io_base + QM_MIG_REGION_SEL); + val &= ~QM_MIG_REGION_EN; + writel(val, qm->io_base + QM_MIG_REGION_SEL); + } +} + +static void hisi_mig_region_enable(struct hisi_qm *qm) +{ + u32 val; + + /* Select migration region of PF */ + if (qm->fun_type == QM_HW_PF && qm->ver > QM_HW_V3) { + val = readl(qm->io_base + QM_MIG_REGION_SEL); + val |= QM_MIG_REGION_EN; + writel(val, qm->io_base + QM_MIG_REGION_SEL); + } +} + +static void hisi_qm_pci_uninit(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + + pci_free_irq_vectors(pdev); + hisi_mig_region_clear(qm); + qm_put_pci_res(qm); + pci_disable_device(pdev); +} + +static void hisi_qm_set_state(struct hisi_qm *qm, u8 state) +{ + if (qm->ver > QM_HW_V2 && qm->fun_type == QM_HW_VF) + writel(state, qm->io_base + QM_VF_STATE); +} + +static void hisi_qm_unint_work(struct hisi_qm *qm) +{ + destroy_workqueue(qm->wq); +} + +static void hisi_qm_free_rsv_buf(struct hisi_qm *qm) +{ + struct qm_dma *xqc_dma = &qm->xqc_buf.qcdma; + struct device *dev = &qm->pdev->dev; + + dma_free_coherent(dev, xqc_dma->size, xqc_dma->va, xqc_dma->dma); +} + +static void hisi_qm_memory_uninit(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + + hisi_qp_memory_uninit(qm, qm->qp_num); + hisi_qm_free_rsv_buf(qm); + if (qm->qdma.va) { + hisi_qm_cache_wb(qm); + dma_free_coherent(dev, qm->qdma.size, + qm->qdma.va, qm->qdma.dma); + } + + idr_destroy(&qm->qp_idr); + + if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps)) + kfree(qm->factor); +} + +/** + * hisi_qm_uninit() - Uninitialize qm. + * @qm: The qm needed uninit. + * + * This function uninits qm related device resources. + */ +void hisi_qm_uninit(struct hisi_qm *qm) +{ + qm_cmd_uninit(qm); + hisi_qm_unint_work(qm); + + down_write(&qm->qps_lock); + hisi_qm_memory_uninit(qm); + hisi_qm_set_state(qm, QM_NOT_READY); + up_write(&qm->qps_lock); + + qm_remove_uacce(qm); + qm_irqs_unregister(qm); + hisi_qm_pci_uninit(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_uninit); + +/** + * hisi_qm_get_vft() - Get vft from a qm. + * @qm: The qm we want to get its vft. + * @base: The base number of queue in vft. + * @number: The number of queues in vft. + * + * We can allocate multiple queues to a qm by configuring virtual function + * table. We get related configures by this function. Normally, we call this + * function in VF driver to get the queue information. + * + * qm hw v1 does not support this interface. + */ +static int hisi_qm_get_vft(struct hisi_qm *qm, u32 *base, u32 *number) +{ + if (!base || !number) + return -EINVAL; + + if (!qm->ops->get_vft) { + dev_err(&qm->pdev->dev, "Don't support vft read!\n"); + return -EINVAL; + } + + return qm->ops->get_vft(qm, base, number); +} + +/** + * hisi_qm_set_vft() - Set vft to a qm. + * @qm: The qm we want to set its vft. + * @fun_num: The function number. + * @base: The base number of queue in vft. + * @number: The number of queues in vft. + * + * This function is alway called in PF driver, it is used to assign queues + * among PF and VFs. + * + * Assign queues A~B to PF: hisi_qm_set_vft(qm, 0, A, B - A + 1) + * Assign queues A~B to VF: hisi_qm_set_vft(qm, 2, A, B - A + 1) + * (VF function number 0x2) + */ +static int hisi_qm_set_vft(struct hisi_qm *qm, u32 fun_num, u32 base, + u32 number) +{ + u32 max_q_num = qm->ctrl_qp_num; + + if (base >= max_q_num || number > max_q_num || + (base + number) > max_q_num) + return -EINVAL; + + return qm_set_sqc_cqc_vft(qm, fun_num, base, number); +} + +static void qm_init_eq_aeq_status(struct hisi_qm *qm) +{ + struct hisi_qm_status *status = &qm->status; + + status->eq_head = 0; + status->aeq_head = 0; + status->eqc_phase = true; + status->aeqc_phase = true; +} + +static void qm_enable_eq_aeq_interrupts(struct hisi_qm *qm) +{ + /* Clear eq/aeq interrupt source */ + qm_db(qm, 0, QM_DOORBELL_CMD_AEQ, qm->status.aeq_head, 0); + qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0); + + writel(0x0, qm->io_base + QM_VF_EQ_INT_MASK); + writel(0x0, qm->io_base + QM_VF_AEQ_INT_MASK); +} + +static void qm_disable_eq_aeq_interrupts(struct hisi_qm *qm) +{ + writel(0x1, qm->io_base + QM_VF_EQ_INT_MASK); + writel(0x1, qm->io_base + QM_VF_AEQ_INT_MASK); +} + +static int qm_eq_ctx_cfg(struct hisi_qm *qm) +{ + struct qm_eqc eqc = {0}; + + eqc.base_l = cpu_to_le32(lower_32_bits(qm->eqe_dma)); + eqc.base_h = cpu_to_le32(upper_32_bits(qm->eqe_dma)); + if (qm->ver == QM_HW_V1) + eqc.dw3 = cpu_to_le32(QM_EQE_AEQE_SIZE); + eqc.dw6 = cpu_to_le32(((u32)qm->eq_depth - 1) | (1 << QM_EQC_PHASE_SHIFT)); + + return qm_set_and_get_xqc(qm, QM_MB_CMD_EQC, &eqc, 0, 0); +} + +static int qm_aeq_ctx_cfg(struct hisi_qm *qm) +{ + struct qm_aeqc aeqc = {0}; + + aeqc.base_l = cpu_to_le32(lower_32_bits(qm->aeqe_dma)); + aeqc.base_h = cpu_to_le32(upper_32_bits(qm->aeqe_dma)); + aeqc.dw6 = cpu_to_le32(((u32)qm->aeq_depth - 1) | (1 << QM_EQC_PHASE_SHIFT)); + + return qm_set_and_get_xqc(qm, QM_MB_CMD_AEQC, &aeqc, 0, 0); +} + +static int qm_eq_aeq_ctx_cfg(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + qm_init_eq_aeq_status(qm); + + /* Before starting the dev, clear the memory and then configure to device using. */ + memset(qm->qdma.va, 0, qm->qdma.size); + + ret = qm_eq_ctx_cfg(qm); + if (ret) { + dev_err(dev, "Set eqc failed!\n"); + return ret; + } + + return qm_aeq_ctx_cfg(qm); +} + +static int __hisi_qm_start(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + if (!qm->qdma.va) { + dev_err(dev, "qm qdma is NULL!\n"); + return -EINVAL; + } + + if (qm->fun_type == QM_HW_PF) { + ret = hisi_qm_set_vft(qm, 0, qm->qp_base, qm->qp_num); + if (ret) + return ret; + } + + ret = qm_eq_aeq_ctx_cfg(qm); + if (ret) + return ret; + + ret = hisi_qm_mb(qm, QM_MB_CMD_SQC_BT, qm->sqc_dma, 0, 0); + if (ret) + return ret; + + ret = hisi_qm_mb(qm, QM_MB_CMD_CQC_BT, qm->cqc_dma, 0, 0); + if (ret) + return ret; + + /* Enables the doorbell function when the device is enabled. */ + qm_dev_db_ctrl(qm, false); + qm_fun_db_ctrl(qm, false); + qm_init_prefetch(qm); + qm_enable_eq_aeq_interrupts(qm); + + return 0; +} + +/** + * hisi_qm_start() - start qm + * @qm: The qm to be started. + * + * This function starts a qm, then we can allocate qp from this qm. + */ +int hisi_qm_start(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + down_write(&qm->qps_lock); + + dev_dbg(dev, "qm start with %u queue pairs\n", qm->qp_num); + + if (!qm->qp_num) { + dev_err(dev, "qp_num should not be 0\n"); + ret = -EINVAL; + goto err_unlock; + } + + ret = __hisi_qm_start(qm); + if (ret) + goto err_unlock; + + atomic_set(&qm->status.flags, QM_WORK); + hisi_qm_set_state(qm, QM_READY); + +err_unlock: + up_write(&qm->qps_lock); + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_start); + +static int qm_restart(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + struct hisi_qp *qp; + int ret, i; + + ret = hisi_qm_start(qm); + if (ret < 0) + return ret; + + down_write(&qm->qps_lock); + for (i = 0; i < qm->qp_num; i++) { + qp = &qm->qp_array[i]; + if (atomic_read(&qp->qp_status.flags) == QP_STOP && + qp->is_resetting == true && qp->is_in_kernel == true) { + ret = qm_start_qp_nolock(qp, 0); + if (ret < 0) { + dev_err(dev, "Failed to start qp%d!\n", i); + + up_write(&qm->qps_lock); + return ret; + } + qp->is_resetting = false; + } + } + up_write(&qm->qps_lock); + + return 0; +} + +/* Stop started qps in reset flow */ +static void qm_stop_started_qp(struct hisi_qm *qm) +{ + struct hisi_qp *qp; + int i; + + for (i = 0; i < qm->qp_num; i++) { + qp = &qm->qp_array[i]; + if (atomic_read(&qp->qp_status.flags) == QP_START) { + qp->is_resetting = true; + qm_stop_qp_nolock(qp); + } + } +} + +/** + * qm_invalid_queues() - invalid all queues in use. + * @qm: The qm in which the queues will be invalidated. + * + * This function invalid all queues in use. If the doorbell command is sent + * to device in user space after the device is reset, the device discards + * the doorbell command. + */ +static void qm_invalid_queues(struct hisi_qm *qm) +{ + struct hisi_qp *qp; + struct qm_sqc *sqc; + struct qm_cqc *cqc; + int i; + + /* + * Normal stop queues is no longer used and does not need to be + * invalid queues. + */ + if (qm->status.stop_reason == QM_NORMAL) + return; + + if (qm->status.stop_reason == QM_DOWN || qm->status.stop_reason == QM_SHUTDOWN) + hisi_qm_cache_wb(qm); + + for (i = 0; i < qm->qp_num; i++) { + qp = &qm->qp_array[i]; + if (!qp->is_resetting) + continue; + + /* Modify random data and set sqc close bit to invalid queue. */ + sqc = qm->sqc + i; + cqc = qm->cqc + i; + sqc->w8 = cpu_to_le16(QM_XQC_RANDOM_DATA); + sqc->w13 = cpu_to_le16(QM_SQC_DISABLE_QP); + cqc->w8 = cpu_to_le16(QM_XQC_RANDOM_DATA); + if (qp->is_in_kernel) + memset(qp->qdma.va, 0, qp->qdma.size); + } +} + +/** + * hisi_qm_stop() - Stop a qm. + * @qm: The qm which will be stopped. + * @r: The reason to stop qm. + * + * This function stops qm and its qps, then qm can not accept request. + * Related resources are not released at this state, we can use hisi_qm_start + * to let qm start again. + */ +int hisi_qm_stop(struct hisi_qm *qm, enum qm_stop_reason r) +{ + struct device *dev = &qm->pdev->dev; + int ret = 0; + + down_write(&qm->qps_lock); + + if (atomic_read(&qm->status.flags) == QM_STOP) + goto err_unlock; + + /* Stop all the request sending at first. */ + atomic_set(&qm->status.flags, QM_STOP); + qm->status.stop_reason = r; + + if (qm->status.stop_reason != QM_NORMAL) { + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET); + if (qm->status.stop_reason != QM_SHUTDOWN) + qm_fun_db_ctrl(qm, true); + /* + * When performing soft reset, the hardware will no longer + * do tasks, and the tasks in the device will be flushed + * out directly since the master ooo is closed. + */ + if (test_bit(QM_SUPPORT_STOP_FUNC, &qm->caps) && + r != QM_SOFT_RESET) { + ret = qm_drain_qm(qm); + if (ret) { + dev_err(dev, "failed to drain qm!\n"); + goto err_unlock; + } + } + + qm_stop_started_qp(qm); + + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET); + } + + qm_disable_eq_aeq_interrupts(qm); + if (qm->fun_type == QM_HW_PF) { + ret = hisi_qm_set_vft(qm, 0, 0, 0); + if (ret < 0) { + dev_err(dev, "Failed to set vft!\n"); + ret = -EBUSY; + goto err_unlock; + } + } + + qm_invalid_queues(qm); + qm->status.stop_reason = QM_NORMAL; + +err_unlock: + up_write(&qm->qps_lock); + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_stop); + +static void qm_hw_error_init(struct hisi_qm *qm) +{ + if (!qm->ops->hw_error_init) { + dev_err(&qm->pdev->dev, "QM doesn't support hw error handling!\n"); + return; + } + + qm->ops->hw_error_init(qm); +} + +static void qm_hw_error_uninit(struct hisi_qm *qm) +{ + if (!qm->ops->hw_error_uninit) { + dev_err(&qm->pdev->dev, "Unexpected QM hw error uninit!\n"); + return; + } + + qm->ops->hw_error_uninit(qm); +} + +static enum acc_err_result qm_hw_error_handle(struct hisi_qm *qm) +{ + if (!qm->ops->hw_error_handle) { + dev_err(&qm->pdev->dev, "QM doesn't support hw error report!\n"); + return ACC_ERR_NONE; + } + + return qm->ops->hw_error_handle(qm); +} + +/** + * hisi_qm_dev_err_init() - Initialize device error configuration. + * @qm: The qm for which we want to do error initialization. + * + * Initialize QM and device error related configuration. + */ +void hisi_qm_dev_err_init(struct hisi_qm *qm) +{ + if (qm->fun_type == QM_HW_VF) + return; + + qm_hw_error_init(qm); + + if (!qm->err_ini->hw_err_enable) { + dev_err(&qm->pdev->dev, "Device doesn't support hw error init!\n"); + return; + } + qm->err_ini->hw_err_enable(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_dev_err_init); + +/** + * hisi_qm_dev_err_uninit() - Uninitialize device error configuration. + * @qm: The qm for which we want to do error uninitialization. + * + * Uninitialize QM and device error related configuration. + */ +void hisi_qm_dev_err_uninit(struct hisi_qm *qm) +{ + if (qm->fun_type == QM_HW_VF) + return; + + qm_hw_error_uninit(qm); + + if (!qm->err_ini->hw_err_disable) { + dev_err(&qm->pdev->dev, "Unexpected device hw error uninit!\n"); + return; + } + qm->err_ini->hw_err_disable(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_dev_err_uninit); + +static void qm_release_qp_nolock(struct hisi_qp *qp) +{ + struct hisi_qm *qm = qp->qm; + + if (--qp->ref_count) + return; + + qm->qp_in_used--; + idr_remove(&qm->qp_idr, qp->qp_id); +} + +/** + * hisi_qm_free_qps() - free multiple queue pairs. + * @qps: The queue pairs need to be freed. + * @qp_num: The num of queue pairs. + */ +void hisi_qm_free_qps(struct hisi_qp **qps, int qp_num) +{ + int i; + + if (!qps || qp_num <= 0) + return; + + down_write(&qps[0]->qm->qps_lock); + + for (i = qp_num - 1; i >= 0; i--) { + if (qps[i]->ref_count == 1) + qm_stop_qp_nolock(qps[i]); + + qm_release_qp_nolock(qps[i]); + } + + up_write(&qps[0]->qm->qps_lock); + qm_pm_put_sync(qps[0]->qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_free_qps); + +static void qm_insert_sorted(struct list_head *head, struct hisi_qm_resource *res) +{ + struct hisi_qm_resource *tmp; + struct list_head *n = head; + + list_for_each_entry(tmp, head, list) { + if (res->distance < tmp->distance) { + n = &tmp->list; + break; + } + } + list_add_tail(&res->list, n); +} + +static void free_list(struct list_head *head) +{ + struct hisi_qm_resource *res, *tmp; + + list_for_each_entry_safe(res, tmp, head, list) { + list_del(&res->list); + kfree(res); + } +} + +static int qm_get_and_start_qp(struct hisi_qm *qm, int qp_num, struct hisi_qp **qps, u8 *alg_type) +{ + int i, ret; + + ret = qm_pm_get_sync(qm); + if (ret) + return ret; + + down_write(&qm->qps_lock); + for (i = 0; i < qp_num; i++) { + qps[i] = qm_create_qp_nolock(qm, alg_type[i], true); + if (IS_ERR(qps[i])) { + ret = -ENODEV; + goto stop_and_free; + } + + if (qps[i]->ref_count != 1) + continue; + + ret = qm_start_qp_nolock(qps[i], 0); + if (ret) { + qm_release_qp_nolock(qps[i]); + goto stop_and_free; + } + } + up_write(&qm->qps_lock); + + return 0; + +stop_and_free: + for (i--; i >= 0; i--) { + if (qps[i]->ref_count == 1) + qm_stop_qp_nolock(qps[i]); + + qm_release_qp_nolock(qps[i]); + } + up_write(&qm->qps_lock); + qm_pm_put_sync(qm); + + return ret; +} + +static int hisi_qm_sort_devices(int node, struct list_head *head, + struct hisi_qm_list *qm_list) +{ + struct hisi_qm_resource *res; + struct hisi_qm *qm; + struct device *dev; + int dev_node; + LIST_HEAD(non_full_list); + LIST_HEAD(full_list); + + list_for_each_entry(qm, &qm_list->list, list) { + dev = &qm->pdev->dev; + + dev_node = dev_to_node(dev); + if (dev_node < 0) + dev_node = 0; + + res = kzalloc_obj(*res); + if (!res) + return -ENOMEM; + + res->qm = qm; + res->distance = node_distance(dev_node, node); + + if (qm->qp_in_used == qm->qp_num) + qm_insert_sorted(&full_list, res); + else + qm_insert_sorted(&non_full_list, res); + } + + list_splice_tail(&non_full_list, head); + list_splice_tail(&full_list, head); + + return 0; +} + +/** + * hisi_qm_alloc_qps_node() - Create multiple queue pairs. + * @qm_list: The list of all available devices. + * @qp_num: The number of queue pairs need created. + * @alg_type: The algorithm type. + * @node: The numa node. + * @qps: The queue pairs need created. + * + * This function will sort all available device according to numa distance. + * Then try to create all queue pairs from one device, if all devices do + * not meet the requirements will return error. + */ +int hisi_qm_alloc_qps_node(struct hisi_qm_list *qm_list, int qp_num, + u8 *alg_type, int node, struct hisi_qp **qps) +{ + struct hisi_qm_resource *tmp; + int ret = -ENODEV; + LIST_HEAD(head); + + if (!qps || !qm_list || qp_num <= 0) + return -EINVAL; + + mutex_lock(&qm_list->lock); + if (hisi_qm_sort_devices(node, &head, qm_list)) { + mutex_unlock(&qm_list->lock); + goto err; + } + + list_for_each_entry(tmp, &head, list) { + ret = qm_get_and_start_qp(tmp->qm, qp_num, qps, alg_type); + if (!ret) + break; + } + + mutex_unlock(&qm_list->lock); + if (ret) + pr_info("Failed to create qps, node[%d], qp[%d]!\n", + node, qp_num); + +err: + free_list(&head); + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_alloc_qps_node); + +static int qm_vf_q_assign(struct hisi_qm *qm, u32 num_vfs) +{ + u32 remain_q_num, vfs_q_num, act_q_num, q_num, i, j; + u32 max_qp_num = qm->max_qp_num; + u32 q_base = qm->qp_num; + int ret; + + if (!num_vfs) + return -EINVAL; + + vfs_q_num = qm->ctrl_qp_num - qm->qp_num; + + /* If vfs_q_num is less than num_vfs, return error. */ + if (vfs_q_num < num_vfs) + return -EINVAL; + + q_num = vfs_q_num / num_vfs; + remain_q_num = vfs_q_num % num_vfs; + + for (i = num_vfs; i > 0; i--) { + /* + * if q_num + remain_q_num > max_qp_num in last vf, divide the + * remaining queues equally. + */ + if (i == num_vfs && q_num + remain_q_num <= max_qp_num) { + act_q_num = q_num + remain_q_num; + remain_q_num = 0; + } else if (remain_q_num > 0) { + act_q_num = q_num + 1; + remain_q_num--; + } else { + act_q_num = q_num; + } + + act_q_num = min(act_q_num, max_qp_num); + ret = hisi_qm_set_vft(qm, i, q_base, act_q_num); + if (ret) { + for (j = num_vfs; j > i; j--) + hisi_qm_set_vft(qm, j, 0, 0); + return ret; + } + q_base += act_q_num; + } + + return 0; +} + +static void qm_clear_vft_config(struct hisi_qm *qm) +{ + u32 i; + + /* + * When disabling SR-IOV, clear the configuration of each VF in the hardware + * sequentially. Failure to clear a single VF should not affect the clearing + * operation of other VFs. + */ + for (i = 1; i <= qm->vfs_num; i++) + (void)hisi_qm_set_vft(qm, i, 0, 0); + + qm->vfs_num = 0; +} + +static int qm_func_shaper_enable(struct hisi_qm *qm, u32 fun_index, u32 qos) +{ + struct device *dev = &qm->pdev->dev; + struct qm_shaper_factor t_factor; + u32 ir = qos * QM_QOS_RATE; + int ret, total_vfs, i; + + total_vfs = pci_sriov_get_totalvfs(qm->pdev); + if (fun_index > total_vfs) + return -EINVAL; + + memcpy(&t_factor, &qm->factor[fun_index], sizeof(t_factor)); + qm->factor[fun_index].func_qos = qos; + + ret = qm_get_shaper_para(ir, &qm->factor[fun_index]); + if (ret) { + dev_err(dev, "failed to calculate shaper parameter!\n"); + return -EINVAL; + } + + for (i = ALG_TYPE_0; i <= ALG_TYPE_1; i++) { + /* The base number of queue reuse for different alg type */ + ret = qm_set_vft_common(qm, SHAPER_VFT, fun_index, i, 1); + if (ret) { + dev_err(dev, "type: %d, failed to set shaper vft!\n", i); + goto back_func_qos; + } + } + + return 0; + +back_func_qos: + memcpy(&qm->factor[fun_index], &t_factor, sizeof(t_factor)); + for (i--; i >= ALG_TYPE_0; i--) { + ret = qm_set_vft_common(qm, SHAPER_VFT, fun_index, i, 1); + if (ret) + dev_err(dev, "failed to restore shaper vft during rollback!\n"); + } + + return -EINVAL; +} + +static u32 qm_get_shaper_vft_qos(struct hisi_qm *qm, u32 fun_index) +{ + u64 shaper_vft, ir_calc, ir; + u64 cir_u, cir_b, cir_s; + unsigned int val; + u32 error_rate; + int ret; + + ret = readl_relaxed_poll_timeout(qm->io_base + QM_VFT_CFG_RDY, val, + val & BIT(0), POLL_PERIOD, + POLL_TIMEOUT); + if (ret) + return 0; + + writel(0x1, qm->io_base + QM_VFT_CFG_OP_WR); + writel(SHAPER_VFT, qm->io_base + QM_VFT_CFG_TYPE); + writel(fun_index, qm->io_base + QM_VFT_CFG); + + writel(0x0, qm->io_base + QM_VFT_CFG_RDY); + writel(0x1, qm->io_base + QM_VFT_CFG_OP_ENABLE); + + ret = readl_relaxed_poll_timeout(qm->io_base + QM_VFT_CFG_RDY, val, + val & BIT(0), POLL_PERIOD, + POLL_TIMEOUT); + if (ret) + return 0; + + shaper_vft = readl(qm->io_base + QM_VFT_CFG_DATA_L) | + ((u64)readl(qm->io_base + QM_VFT_CFG_DATA_H) << 32); + + cir_b = shaper_vft & QM_SHAPER_CIR_B_MASK; + cir_u = shaper_vft & QM_SHAPER_CIR_U_MASK; + cir_u = cir_u >> QM_SHAPER_FACTOR_CIR_U_SHIFT; + + cir_s = shaper_vft & QM_SHAPER_CIR_S_MASK; + cir_s = cir_s >> QM_SHAPER_FACTOR_CIR_S_SHIFT; + + ir_calc = acc_shaper_para_calc(cir_b, cir_u, cir_s); + + ir = qm->factor[fun_index].func_qos * QM_QOS_RATE; + + error_rate = QM_QOS_EXPAND_RATE * (u32)abs(ir_calc - ir) / ir; + if (error_rate > QM_QOS_MIN_ERROR_RATE) { + pci_err(qm->pdev, "error_rate: %u, get function qos is error!\n", error_rate); + return 0; + } + + return ir; +} + +static void qm_vf_get_qos(struct hisi_qm *qm, u32 fun_num) +{ + struct device *dev = &qm->pdev->dev; + u32 qos; + int ret; + + qos = qm_get_shaper_vft_qos(qm, fun_num); + if (!qos) { + dev_err(dev, "function(%u) failed to get qos by PF!\n", fun_num); + return; + } + + ret = qm_ping_single_vf(qm, QM_PF_SET_QOS, qos, fun_num); + if (ret) + dev_err(dev, "failed to send command(0x%x) to VF(%u)!\n", QM_PF_SET_QOS, fun_num); +} + +static int qm_vf_read_qos(struct hisi_qm *qm) +{ + int cnt = 0; + int ret = -EINVAL; + + /* reset mailbox qos val */ + qm->mb_qos = 0; + + /* vf ping pf to get function qos */ + ret = qm_ping_pf(qm, QM_VF_GET_QOS); + if (ret) { + pci_err(qm->pdev, "failed to send cmd to PF to get qos!\n"); + return ret; + } + + while (true) { + msleep(QM_WAIT_DST_ACK); + if (qm->mb_qos) + break; + + if (++cnt > QM_MAX_VF_WAIT_COUNT) { + pci_err(qm->pdev, "PF ping VF timeout!\n"); + return -ETIMEDOUT; + } + } + + return ret; +} + +static ssize_t qm_algqos_read(struct file *filp, char __user *buf, + size_t count, loff_t *pos) +{ + struct hisi_qm *qm = filp->private_data; + char tbuf[QM_DBG_READ_LEN]; + u32 qos_val, ir; + int ret; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + /* Mailbox and reset cannot be operated at the same time */ + if (test_and_set_bit(QM_RESETTING, &qm->misc_ctl)) { + pci_err(qm->pdev, "dev resetting, read alg qos failed!\n"); + ret = -EAGAIN; + goto err_put_dfx_access; + } + + if (qm->fun_type == QM_HW_PF) { + ir = qm_get_shaper_vft_qos(qm, 0); + } else { + ret = qm_vf_read_qos(qm); + if (ret) + goto err_get_status; + ir = qm->mb_qos; + } + + qos_val = ir / QM_QOS_RATE; + ret = scnprintf(tbuf, QM_DBG_READ_LEN, "%u\n", qos_val); + + ret = simple_read_from_buffer(buf, count, pos, tbuf, ret); + +err_get_status: + clear_bit(QM_RESETTING, &qm->misc_ctl); +err_put_dfx_access: + hisi_qm_put_dfx_access(qm); + return ret; +} + +static ssize_t qm_get_qos_value(struct hisi_qm *qm, const char *buf, + unsigned long *val, + unsigned int *fun_index) +{ + const struct bus_type *bus_type = qm->pdev->dev.bus; + char tbuf_bdf[QM_DBG_READ_LEN] = {0}; + char val_buf[QM_DBG_READ_LEN] = {0}; + struct pci_dev *pdev; + struct device *dev; + int ret; + + ret = sscanf(buf, "%s %s", tbuf_bdf, val_buf); + if (ret != QM_QOS_PARAM_NUM) + return -EINVAL; + + ret = kstrtoul(val_buf, 10, val); + if (ret || *val == 0 || *val > QM_QOS_MAX_VAL) { + pci_err(qm->pdev, "input qos value is error, please set 1~1000!\n"); + return -EINVAL; + } + + dev = bus_find_device_by_name(bus_type, NULL, tbuf_bdf); + if (!dev) { + pci_err(qm->pdev, "input pci bdf number is error!\n"); + return -ENODEV; + } + + pdev = container_of(dev, struct pci_dev, dev); + if (pci_physfn(pdev) != qm->pdev) { + pci_err(qm->pdev, "the pdev input does not match the pf!\n"); + put_device(dev); + return -EINVAL; + } + + *fun_index = pdev->devfn; + put_device(dev); + + return 0; +} + +static ssize_t qm_algqos_write(struct file *filp, const char __user *buf, + size_t count, loff_t *pos) +{ + struct hisi_qm *qm = filp->private_data; + char tbuf[QM_DBG_READ_LEN]; + unsigned int fun_index; + unsigned long val; + int len, ret; + + if (*pos != 0) + return 0; + + if (count >= QM_DBG_READ_LEN) + return -ENOSPC; + + len = simple_write_to_buffer(tbuf, QM_DBG_READ_LEN - 1, pos, buf, count); + if (len < 0) + return len; + + tbuf[len] = '\0'; + ret = qm_get_qos_value(qm, tbuf, &val, &fun_index); + if (ret) + return ret; + + /* Mailbox and reset cannot be operated at the same time */ + if (test_and_set_bit(QM_RESETTING, &qm->misc_ctl)) { + pci_err(qm->pdev, "dev resetting, write alg qos failed!\n"); + return -EAGAIN; + } + + ret = qm_pm_get_sync(qm); + if (ret) { + ret = -EINVAL; + goto err_get_status; + } + + ret = qm_func_shaper_enable(qm, fun_index, val); + if (ret) { + pci_err(qm->pdev, "failed to enable function shaper!\n"); + ret = -EINVAL; + goto err_put_sync; + } + + pci_info(qm->pdev, "the qos value of function%u is set to %lu.\n", + fun_index, val); + ret = count; + +err_put_sync: + qm_pm_put_sync(qm); +err_get_status: + clear_bit(QM_RESETTING, &qm->misc_ctl); + return ret; +} + +static const struct file_operations qm_algqos_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = qm_algqos_read, + .write = qm_algqos_write, +}; + +/** + * hisi_qm_set_algqos_init() - Initialize function qos debugfs files. + * @qm: The qm for which we want to add debugfs files. + * + * Create function qos debugfs files, VF ping PF to get function qos. + */ +void hisi_qm_set_algqos_init(struct hisi_qm *qm) +{ + if (qm->fun_type == QM_HW_PF) + debugfs_create_file("alg_qos", 0644, qm->debug.debug_root, + qm, &qm_algqos_fops); + else if (test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) + debugfs_create_file("alg_qos", 0444, qm->debug.debug_root, + qm, &qm_algqos_fops); +} + +static void hisi_qm_init_vf_qos(struct hisi_qm *qm, int total_func) +{ + int i; + + for (i = 1; i <= total_func; i++) + qm->factor[i].func_qos = QM_QOS_MAX_VAL; +} + +/** + * hisi_qm_sriov_enable() - enable virtual functions + * @pdev: the PCIe device + * @max_vfs: the number of virtual functions to enable + * + * Returns the number of enabled VFs. If there are VFs enabled already or + * max_vfs is more than the total number of device can be enabled, returns + * failure. + */ +int hisi_qm_sriov_enable(struct pci_dev *pdev, int max_vfs) +{ + struct hisi_qm *qm = pci_get_drvdata(pdev); + int pre_existing_vfs, num_vfs, total_vfs, ret; + + ret = qm_pm_get_sync(qm); + if (ret) + return ret; + + total_vfs = pci_sriov_get_totalvfs(pdev); + pre_existing_vfs = pci_num_vf(pdev); + if (pre_existing_vfs) { + pci_err(pdev, "%d VFs already enabled. Please disable pre-enabled VFs!\n", + pre_existing_vfs); + goto err_put_sync; + } + + if (max_vfs > total_vfs) { + pci_err(pdev, "%d VFs is more than total VFs %d!\n", max_vfs, total_vfs); + ret = -ERANGE; + goto err_put_sync; + } + + num_vfs = max_vfs; + + if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps)) + hisi_qm_init_vf_qos(qm, num_vfs); + + ret = qm_vf_q_assign(qm, num_vfs); + if (ret) { + pci_err(pdev, "Can't assign queues for VF!\n"); + goto err_put_sync; + } + + qm->vfs_num = num_vfs; + ret = pci_enable_sriov(pdev, num_vfs); + if (ret) { + pci_err(pdev, "Can't enable VF!\n"); + qm_clear_vft_config(qm); + goto err_put_sync; + } + + pci_info(pdev, "VF enabled, vfs_num(=%d)!\n", num_vfs); + + return num_vfs; + +err_put_sync: + qm_pm_put_sync(qm); + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_sriov_enable); + +/** + * hisi_qm_sriov_disable - disable virtual functions + * @pdev: the PCI device. + * @is_frozen: true when all the VFs are frozen. + * + * Return failure if there are VFs assigned already or VF is in used. + */ +int hisi_qm_sriov_disable(struct pci_dev *pdev, bool is_frozen) +{ + struct hisi_qm *qm = pci_get_drvdata(pdev); + + if (pci_vfs_assigned(pdev)) { + pci_err(pdev, "Failed to disable VFs as VFs are assigned!\n"); + return -EPERM; + } + + /* While VF is in used, SRIOV cannot be disabled. */ + if (!is_frozen && qm_try_frozen_vfs(pdev, qm->qm_list)) { + pci_err(pdev, "Task is using its VF!\n"); + return -EBUSY; + } + + pci_disable_sriov(pdev); + qm_clear_vft_config(qm); + qm_pm_put_sync(qm); + + return 0; +} +EXPORT_SYMBOL_GPL(hisi_qm_sriov_disable); + +/** + * hisi_qm_sriov_configure - configure the number of VFs + * @pdev: The PCI device + * @num_vfs: The number of VFs need enabled + * + * Enable SR-IOV according to num_vfs, 0 means disable. + */ +int hisi_qm_sriov_configure(struct pci_dev *pdev, int num_vfs) +{ + if (num_vfs == 0) + return hisi_qm_sriov_disable(pdev, false); + + return hisi_qm_sriov_enable(pdev, num_vfs); +} +EXPORT_SYMBOL_GPL(hisi_qm_sriov_configure); + +static enum acc_err_result qm_dev_err_handle(struct hisi_qm *qm) +{ + if (!qm->err_ini->get_err_result) { + dev_err(&qm->pdev->dev, "Device doesn't support reset!\n"); + return ACC_ERR_NONE; + } + + return qm->err_ini->get_err_result(qm); +} + +static enum acc_err_result qm_process_dev_error(struct hisi_qm *qm) +{ + enum acc_err_result qm_ret, dev_ret; + + /* log qm error */ + qm_ret = qm_hw_error_handle(qm); + + /* log device error */ + dev_ret = qm_dev_err_handle(qm); + if (qm_ret == ACC_ERR_NEED_RESET || dev_ret == ACC_ERR_NEED_RESET) + return ACC_ERR_NEED_RESET; + + if (qm_ret == ACC_ERR_NEED_FUNC_RESET) + return ACC_ERR_NEED_FUNC_RESET; + + return ACC_ERR_RECOVERED; +} + +/** + * hisi_qm_dev_err_detected() - Get device and qm error status then log it. + * @pdev: The PCI device which need report error. + * @state: The connectivity between CPU and device. + * + * We register this function into PCIe AER handlers, It will report device or + * qm hardware error status when error occur. + */ +pci_ers_result_t hisi_qm_dev_err_detected(struct pci_dev *pdev, + pci_channel_state_t state) +{ + struct hisi_qm *qm = pci_get_drvdata(pdev); + enum acc_err_result ret; + + if (pdev->is_virtfn) + return PCI_ERS_RESULT_NONE; + + pci_info(pdev, "PCI error detected, state(=%u)!!\n", state); + if (state == pci_channel_io_perm_failure) + return PCI_ERS_RESULT_DISCONNECT; + + ret = qm_process_dev_error(qm); + if (ret == ACC_ERR_NEED_RESET || ret == ACC_ERR_NEED_FUNC_RESET) + return PCI_ERS_RESULT_NEED_RESET; + + return PCI_ERS_RESULT_RECOVERED; +} +EXPORT_SYMBOL_GPL(hisi_qm_dev_err_detected); + +static int qm_check_req_recv(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + int ret; + u32 val; + + if (qm->ver >= QM_HW_V3) + return 0; + + writel(ACC_VENDOR_ID_VALUE, qm->io_base + QM_PEH_VENDOR_ID); + ret = readl_relaxed_poll_timeout(qm->io_base + QM_PEH_VENDOR_ID, val, + (val == ACC_VENDOR_ID_VALUE), + POLL_PERIOD, POLL_TIMEOUT); + if (ret) { + dev_err(&pdev->dev, "Fails to read QM reg!\n"); + return ret; + } + + writel(PCI_VENDOR_ID_HUAWEI, qm->io_base + QM_PEH_VENDOR_ID); + ret = readl_relaxed_poll_timeout(qm->io_base + QM_PEH_VENDOR_ID, val, + (val == PCI_VENDOR_ID_HUAWEI), + POLL_PERIOD, POLL_TIMEOUT); + if (ret) + dev_err(&pdev->dev, "Fails to read QM reg in the second time!\n"); + + return ret; +} + +static int qm_set_pf_mse(struct hisi_qm *qm, bool set) +{ + struct pci_dev *pdev = qm->pdev; + u16 cmd; + int i; + + pci_read_config_word(pdev, PCI_COMMAND, &cmd); + if (set) + cmd |= PCI_COMMAND_MEMORY; + else + cmd &= ~PCI_COMMAND_MEMORY; + + pci_write_config_word(pdev, PCI_COMMAND, cmd); + for (i = 0; i < MAX_WAIT_COUNTS; i++) { + pci_read_config_word(pdev, PCI_COMMAND, &cmd); + if (set == ((cmd & PCI_COMMAND_MEMORY) >> 1)) + return 0; + + udelay(1); + } + + return -ETIMEDOUT; +} + +static int qm_set_vf_mse(struct hisi_qm *qm, bool set) +{ + struct pci_dev *pdev = qm->pdev; + u16 sriov_ctrl; + int pos; + int i; + + /* + * Since function qm_set_vf_mse is called only after SRIOV is enabled, + * pci_find_ext_capability cannot return 0, pos does not need to be + * checked. + */ + pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); + pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &sriov_ctrl); + if (set) + sriov_ctrl |= PCI_SRIOV_CTRL_MSE; + else + sriov_ctrl &= ~PCI_SRIOV_CTRL_MSE; + pci_write_config_word(pdev, pos + PCI_SRIOV_CTRL, sriov_ctrl); + + for (i = 0; i < MAX_WAIT_COUNTS; i++) { + pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &sriov_ctrl); + if (set == (sriov_ctrl & PCI_SRIOV_CTRL_MSE) >> + ACC_PEH_SRIOV_CTRL_VF_MSE_SHIFT) + return 0; + + udelay(1); + } + + return -ETIMEDOUT; +} + +static void qm_dev_ecc_mbit_handle(struct hisi_qm *qm) +{ + u32 nfe_enb = 0; + + /* Kunpeng930 hardware automatically close master ooo when NFE occurs */ + if (qm->ver >= QM_HW_V3) + return; + + if (!qm->err_status.is_dev_ecc_mbit && + qm->err_status.is_qm_ecc_mbit && + qm->err_ini->close_axi_master_ooo) { + qm->err_ini->close_axi_master_ooo(qm); + } else if (qm->err_status.is_dev_ecc_mbit && + !qm->err_status.is_qm_ecc_mbit && + !qm->err_ini->close_axi_master_ooo) { + nfe_enb = readl(qm->io_base + QM_RAS_NFE_ENABLE); + writel(nfe_enb & ~qm->err_info.qm_err.ecc_2bits_mask, + qm->io_base + QM_RAS_NFE_ENABLE); + writel(qm->err_info.qm_err.ecc_2bits_mask, qm->io_base + QM_ABNORMAL_INT_SET); + } +} + +static int qm_vf_reset_prepare(struct hisi_qm *qm, + enum qm_stop_reason stop_reason) +{ + struct hisi_qm_list *qm_list = qm->qm_list; + struct pci_dev *pdev = qm->pdev; + struct pci_dev *virtfn; + struct hisi_qm *vf_qm; + int ret = 0; + + mutex_lock(&qm_list->lock); + list_for_each_entry(vf_qm, &qm_list->list, list) { + virtfn = vf_qm->pdev; + if (virtfn == pdev) + continue; + + if (pci_physfn(virtfn) == pdev) { + /* save VFs PCIE BAR configuration */ + pci_save_state(virtfn); + + ret = hisi_qm_stop(vf_qm, stop_reason); + if (ret) + goto stop_fail; + } + } + +stop_fail: + mutex_unlock(&qm_list->lock); + return ret; +} + +static int qm_try_stop_vfs(struct hisi_qm *qm, enum qm_ifc_cmd cmd, + enum qm_stop_reason stop_reason) +{ + struct pci_dev *pdev = qm->pdev; + int ret; + + if (!qm->vfs_num) + return 0; + + /* Kunpeng930 supports to notify VFs to stop before PF reset */ + if (test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) { + ret = qm_ping_all_vfs(qm, cmd, 0); + if (ret) + pci_err(pdev, "failed to send command to all VFs before PF reset!\n"); + } else { + ret = qm_vf_reset_prepare(qm, stop_reason); + if (ret) + pci_err(pdev, "failed to prepare reset, ret = %d.\n", ret); + } + + return ret; +} + +static int qm_controller_reset_prepare(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + int ret; + + if (qm->err_ini->set_priv_status) { + ret = qm->err_ini->set_priv_status(qm); + if (ret) + return ret; + } + + ret = qm_reset_prepare_ready(qm); + if (ret) { + pci_err(pdev, "Controller reset not ready!\n"); + return ret; + } + + qm_dev_ecc_mbit_handle(qm); + + /* PF obtains the information of VF by querying the register. */ + qm_cmd_uninit(qm); + + /* Whether VFs stop successfully, soft reset will continue. */ + ret = qm_try_stop_vfs(qm, QM_PF_SRST_PREPARE, QM_SOFT_RESET); + if (ret) + pci_err(pdev, "failed to stop vfs by pf in soft reset.\n"); + + ret = hisi_qm_stop(qm, QM_SOFT_RESET); + if (ret) { + pci_err(pdev, "Fails to stop QM!\n"); + qm_reset_bit_clear(qm); + return ret; + } + + if (qm->use_sva) { + ret = qm_hw_err_isolate(qm); + if (ret) + pci_err(pdev, "failed to isolate hw err!\n"); + } + + ret = qm_wait_vf_prepare_finish(qm); + if (ret) + pci_err(pdev, "failed to stop by vfs in soft reset!\n"); + + qm_dev_db_ctrl(qm, true); + + return 0; +} + +static int qm_master_ooo_check(struct hisi_qm *qm) +{ + u32 val; + int ret; + + /* Check the ooo register of the device before resetting the device. */ + writel(ACC_MASTER_GLOBAL_CTRL_SHUTDOWN, qm->io_base + ACC_MASTER_GLOBAL_CTRL); + ret = readl_relaxed_poll_timeout(qm->io_base + ACC_MASTER_TRANS_RETURN, + val, (val == ACC_MASTER_TRANS_RETURN_RW), + POLL_PERIOD, POLL_TIMEOUT); + if (ret) + pci_warn(qm->pdev, "Bus lock! Please reset system.\n"); + + return ret; +} + +static int qm_soft_reset_prepare(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + int ret; + + /* Ensure all doorbells and mailboxes received by QM */ + ret = qm_check_req_recv(qm); + if (ret) + return ret; + + if (qm->vfs_num) { + ret = qm_set_vf_mse(qm, false); + if (ret) { + pci_err(pdev, "Fails to disable vf MSE bit.\n"); + return ret; + } + } + + ret = qm->ops->set_msi(qm, false); + if (ret) { + pci_err(pdev, "Fails to disable PEH MSI bit.\n"); + return ret; + } + + ret = qm_master_ooo_check(qm); + if (ret) + return ret; + + if (qm->err_ini->close_sva_prefetch) + qm->err_ini->close_sva_prefetch(qm); + + ret = qm_set_pf_mse(qm, false); + if (ret) + pci_err(pdev, "Fails to disable pf MSE bit.\n"); + + return ret; +} + +static int qm_reset_device(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + + /* The reset related sub-control registers are not in PCI BAR */ + if (ACPI_HANDLE(&pdev->dev)) { + unsigned long long value = 0; + acpi_status s; + + s = acpi_evaluate_integer(ACPI_HANDLE(&pdev->dev), + qm->err_info.acpi_rst, + NULL, &value); + if (ACPI_FAILURE(s)) { + pci_err(pdev, "NO controller reset method!\n"); + return -EIO; + } + + if (value) { + pci_err(pdev, "Reset step %llu failed!\n", value); + return -EIO; + } + + return 0; + } + + pci_err(pdev, "No reset method!\n"); + return -EINVAL; +} + +static int qm_soft_reset(struct hisi_qm *qm) +{ + int ret; + + ret = qm_soft_reset_prepare(qm); + if (ret) + return ret; + + return qm_reset_device(qm); +} + +static int qm_vf_reset_done(struct hisi_qm *qm) +{ + struct hisi_qm_list *qm_list = qm->qm_list; + struct pci_dev *pdev = qm->pdev; + struct pci_dev *virtfn; + struct hisi_qm *vf_qm; + int ret = 0; + + mutex_lock(&qm_list->lock); + list_for_each_entry(vf_qm, &qm_list->list, list) { + virtfn = vf_qm->pdev; + if (virtfn == pdev) + continue; + + if (pci_physfn(virtfn) == pdev) { + /* enable VFs PCIE BAR configuration */ + pci_restore_state(virtfn); + + ret = qm_restart(vf_qm); + if (ret) + goto restart_fail; + } + } + +restart_fail: + mutex_unlock(&qm_list->lock); + return ret; +} + +static int qm_try_start_vfs(struct hisi_qm *qm, enum qm_ifc_cmd cmd) +{ + struct pci_dev *pdev = qm->pdev; + u32 data; + int ret; + + if (!qm->vfs_num) + return 0; + + ret = qm_vf_q_assign(qm, qm->vfs_num); + if (ret) { + pci_err(pdev, "failed to assign VFs, ret = %d.\n", ret); + return ret; + } + + /* Kunpeng930 supports to notify VFs to start after PF reset. */ + if (test_bit(QM_SUPPORT_MB_COMMAND, &qm->caps)) { + data = qm->isolate_data.err_threshold; + if (qm->isolate_data.is_isolate) + data |= QM_ISOLATED_STATE; + /* Broadcasting isolate info via RAS to all VFs. */ + ret = qm_ping_all_vfs(qm, cmd, data); + if (ret) + pci_warn(pdev, "failed to send cmd to all VFs after PF reset!\n"); + } else { + ret = qm_vf_reset_done(qm); + if (ret) + pci_warn(pdev, "failed to start vfs, ret = %d.\n", ret); + } + + return ret; +} + +static int qm_dev_hw_init(struct hisi_qm *qm) +{ + return qm->err_ini->hw_init(qm); +} + +static void qm_restart_prepare(struct hisi_qm *qm) +{ + u32 value; + + if (qm->ver >= QM_HW_V3) + return; + + if (!qm->err_status.is_qm_ecc_mbit && + !qm->err_status.is_dev_ecc_mbit) + return; + + /* temporarily close the OOO port used for PEH to write out MSI */ + value = readl(qm->io_base + ACC_AM_CFG_PORT_WR_EN); + writel(value & ~qm->err_info.msi_wr_port, + qm->io_base + ACC_AM_CFG_PORT_WR_EN); + + /* clear dev ecc 2bit error source if having */ + value = qm_get_dev_err_status(qm) & qm->err_info.dev_err.ecc_2bits_mask; + if (value && qm->err_ini->clear_dev_hw_err_status) + qm->err_ini->clear_dev_hw_err_status(qm, value); + + /* clear QM ecc mbit error source */ + writel(qm->err_info.qm_err.ecc_2bits_mask, qm->io_base + QM_ABNORMAL_INT_SOURCE); + + /* clear AM Reorder Buffer ecc mbit source */ + writel(ACC_ROB_ECC_ERR_MULTPL, qm->io_base + ACC_AM_ROB_ECC_INT_STS); +} + +static void qm_restart_done(struct hisi_qm *qm) +{ + u32 value; + + if (qm->ver >= QM_HW_V3) + goto clear_flags; + + if (!qm->err_status.is_qm_ecc_mbit && + !qm->err_status.is_dev_ecc_mbit) + return; + + /* open the OOO port for PEH to write out MSI */ + value = readl(qm->io_base + ACC_AM_CFG_PORT_WR_EN); + value |= qm->err_info.msi_wr_port; + writel(value, qm->io_base + ACC_AM_CFG_PORT_WR_EN); + +clear_flags: + qm->err_status.is_qm_ecc_mbit = false; + qm->err_status.is_dev_ecc_mbit = false; +} + +static void qm_disable_axi_error(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *qm_err = &qm->err_info.qm_err; + u32 val; + + val = ~(qm->error_mask & (~QM_RAS_AXI_ERROR)); + writel(val, qm->io_base + QM_ABNORMAL_INT_MASK); + if (qm->ver > QM_HW_V2) + writel(qm_err->shutdown_mask & (~QM_RAS_AXI_ERROR), + qm->io_base + QM_OOO_SHUTDOWN_SEL); + + if (qm->err_ini->disable_axi_error) + qm->err_ini->disable_axi_error(qm); +} + +static void qm_enable_axi_error(struct hisi_qm *qm) +{ + /* clear axi error source */ + writel(QM_RAS_AXI_ERROR, qm->io_base + QM_ABNORMAL_INT_SOURCE); + + writel(~qm->error_mask, qm->io_base + QM_ABNORMAL_INT_MASK); + if (qm->ver > QM_HW_V2) + writel(qm->err_info.qm_err.shutdown_mask, qm->io_base + QM_OOO_SHUTDOWN_SEL); + + if (qm->err_ini->enable_axi_error) + qm->err_ini->enable_axi_error(qm); +} + +static int qm_controller_reset_done(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + int ret; + + ret = qm->ops->set_msi(qm, true); + if (ret) { + pci_err(pdev, "Fails to enable PEH MSI bit!\n"); + return ret; + } + + ret = qm_set_pf_mse(qm, true); + if (ret) { + pci_err(pdev, "Fails to enable pf MSE bit!\n"); + return ret; + } + + if (qm->vfs_num) { + ret = qm_set_vf_mse(qm, true); + if (ret) { + pci_err(pdev, "Fails to enable vf MSE bit!\n"); + return ret; + } + } + + ret = qm_dev_hw_init(qm); + if (ret) { + pci_err(pdev, "Failed to init device\n"); + return ret; + } + + qm_restart_prepare(qm); + hisi_qm_dev_err_init(qm); + qm_disable_axi_error(qm); + if (qm->err_ini->open_axi_master_ooo) + qm->err_ini->open_axi_master_ooo(qm); + + ret = qm_dev_mem_reset(qm); + if (ret) { + pci_err(pdev, "failed to reset device memory\n"); + return ret; + } + + ret = qm_restart(qm); + if (ret) { + pci_err(pdev, "Failed to start QM!\n"); + return ret; + } + + ret = qm_try_start_vfs(qm, QM_PF_RESET_DONE); + if (ret) + pci_err(pdev, "failed to start vfs by pf in soft reset.\n"); + + ret = qm_wait_vf_prepare_finish(qm); + if (ret) + pci_err(pdev, "failed to start by vfs in soft reset!\n"); + qm_enable_axi_error(qm); + qm_cmd_init(qm); + qm_restart_done(qm); + + qm_reset_bit_clear(qm); + + return 0; +} + +static int qm_controller_reset(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + int ret; + + pci_info(pdev, "Controller resetting...\n"); + + ret = qm_controller_reset_prepare(qm); + if (ret) { + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET); + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET); + return ret; + } + + hisi_qm_show_last_dfx_regs(qm); + if (qm->err_ini->show_last_dfx_regs) + qm->err_ini->show_last_dfx_regs(qm); + + ret = qm_soft_reset(qm); + if (ret) + goto err_reset; + + ret = qm_controller_reset_done(qm); + if (ret) + goto err_reset; + + pci_info(pdev, "Controller reset complete\n"); + + return 0; + +err_reset: + pci_err(pdev, "Controller reset failed (%d)\n", ret); + qm_reset_bit_clear(qm); + + /* if resetting fails, isolate the device */ + if (qm->use_sva) + qm->isolate_data.is_isolate = true; + return ret; +} + +/** + * hisi_qm_dev_slot_reset() - slot reset + * @pdev: the PCIe device + * + * This function offers QM relate PCIe device reset interface. Drivers which + * use QM can use this function as slot_reset in its struct pci_error_handlers. + */ +pci_ers_result_t hisi_qm_dev_slot_reset(struct pci_dev *pdev) +{ + struct hisi_qm *qm = pci_get_drvdata(pdev); + int ret; + + if (pdev->is_virtfn) + return PCI_ERS_RESULT_RECOVERED; + + /* reset pcie device controller */ + ret = qm_controller_reset(qm); + if (ret) { + pci_err(pdev, "Controller reset failed (%d)\n", ret); + return PCI_ERS_RESULT_DISCONNECT; + } + + return PCI_ERS_RESULT_RECOVERED; +} +EXPORT_SYMBOL_GPL(hisi_qm_dev_slot_reset); + +void hisi_qm_reset_prepare(struct pci_dev *pdev) +{ + struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(pdev)); + struct hisi_qm *qm = pci_get_drvdata(pdev); + u32 delay = 0; + int ret; + + /* + * Check whether there is an ECC mbit error, If it occurs, need to + * wait for soft reset to fix it. + */ + while (qm_check_dev_error(qm)) { + msleep(++delay); + if (delay > QM_RESET_WAIT_TIMEOUT) + return; + } + + ret = qm_reset_prepare_ready(qm); + if (ret) { + pci_err(pdev, "FLR not ready!\n"); + return; + } + + hisi_qm_dev_err_uninit(pf_qm); + + /* PF obtains the information of VF by querying the register. */ + if (qm->fun_type == QM_HW_PF) + qm_cmd_uninit(qm); + + ret = qm_try_stop_vfs(qm, QM_PF_FLR_PREPARE, QM_DOWN); + if (ret) + pci_err(pdev, "failed to stop vfs by pf in FLR.\n"); + + ret = hisi_qm_stop(qm, QM_DOWN); + if (ret) { + pci_err(pdev, "Failed to stop QM, ret = %d.\n", ret); + goto err_prepare; + } + + ret = qm_wait_vf_prepare_finish(qm); + if (ret) + pci_err(pdev, "failed to stop by vfs in FLR!\n"); + + qm_dev_db_ctrl(qm, true); + + pci_info(pdev, "FLR resetting...\n"); + + return; + +err_prepare: + pci_info(pdev, "FLR resetting prepare failed!\n"); + atomic_set(&qm->status.flags, QM_STOP); + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET); + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET); + qm_dev_db_ctrl(qm, true); +} +EXPORT_SYMBOL_GPL(hisi_qm_reset_prepare); + +static bool qm_flr_reset_complete(struct pci_dev *pdev) +{ + struct pci_dev *pf_pdev = pci_physfn(pdev); + struct hisi_qm *qm = pci_get_drvdata(pf_pdev); + u32 id; + + pci_read_config_dword(qm->pdev, PCI_COMMAND, &id); + if (id == QM_PCI_COMMAND_INVALID) { + pci_err(pdev, "Device can not be used!\n"); + return false; + } + + return true; +} + +void hisi_qm_reset_done(struct pci_dev *pdev) +{ + struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(pdev)); + struct hisi_qm *qm = pci_get_drvdata(pdev); + int ret; + + if (qm->fun_type == QM_HW_PF) { + ret = qm_dev_hw_init(qm); + if (ret) { + pci_err(pdev, "Failed to init PF, ret = %d.\n", ret); + goto flr_done; + } + } + + hisi_qm_dev_err_init(pf_qm); + + ret = qm_restart(qm); + if (ret) { + pci_err(pdev, "Failed to start QM, ret = %d.\n", ret); + goto flr_done; + } + + ret = qm_try_start_vfs(qm, QM_PF_RESET_DONE); + if (ret) + pci_err(pdev, "failed to start vfs by pf in FLR.\n"); + + ret = qm_wait_vf_prepare_finish(qm); + if (ret) + pci_err(pdev, "failed to start by vfs in FLR!\n"); + +flr_done: + if (qm->fun_type == QM_HW_PF) + qm_cmd_init(qm); + + if (qm_flr_reset_complete(pdev)) + pci_info(pdev, "FLR reset complete\n"); + + qm_reset_bit_clear(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_reset_done); + +static irqreturn_t qm_rsvd_irq(int irq, void *data) +{ + struct hisi_qm *qm = data; + + dev_info(&qm->pdev->dev, "Reserved interrupt, ignore!\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t qm_abnormal_irq(int irq, void *data) +{ + struct hisi_qm *qm = data; + + atomic64_inc(&qm->debug.dfx.abnormal_irq_cnt); + + if (!test_bit(QM_DRIVER_REMOVING, &qm->misc_ctl)) + schedule_work(&qm->rst_work); + else + pci_warn(qm->pdev, "Driver is down, need to reload driver!\n"); + + return IRQ_HANDLED; +} + +/** + * hisi_qm_dev_shutdown() - Shutdown device. + * @pdev: The device will be shutdown. + * + * This function will stop qm when OS shutdown or rebooting. + */ +void hisi_qm_dev_shutdown(struct pci_dev *pdev) +{ + struct hisi_qm *qm = pci_get_drvdata(pdev); + int ret; + + ret = hisi_qm_stop(qm, QM_SHUTDOWN); + if (ret) + dev_err(&pdev->dev, "Fail to stop qm in shutdown!\n"); +} +EXPORT_SYMBOL_GPL(hisi_qm_dev_shutdown); + +static u64 qm_get_function_mask(struct hisi_qm *qm) +{ + return readq(qm->io_base + QM_FUNC_AXI_ERR_ST0); +} + +static void qm_clear_function_mask(struct hisi_qm *qm, u64 func_mask) +{ + /* Register write 1 clear */ + writeq(func_mask, qm->io_base + QM_FUNC_AXI_ERR_ST0); +} + +static void qm_function_reset(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + u64 func_mask; + u32 fun_num; + int ret; + + func_mask = qm_get_function_mask(qm); + if (!func_mask) { + dev_info(dev, "no function need reset!\n"); + return; + } + + for (fun_num = 1; fun_num <= qm->vfs_num; fun_num++) { + if (func_mask & BIT(fun_num)) { + ret = qm_ping_single_vf(qm, QM_FUNCTION_RESET, 0, fun_num); + /* When function ping fail, user decides the VF reset method. */ + if (ret) + dev_err(dev, "failed to send command(0x%x) to VF(%u)!\n", + (unsigned int)QM_FUNCTION_RESET, fun_num); + } + } + + if (func_mask & BIT(0)) { + dev_info(dev, "function reset start...\n"); + qm_reset_function(qm); + dev_info(dev, "function reset end!\n"); + } + + qm_clear_function_mask(qm, func_mask); +} + +static void hisi_qm_controller_reset(struct work_struct *rst_work) +{ + struct hisi_qm *qm = container_of(rst_work, struct hisi_qm, rst_work); + enum acc_err_result err_result; + int ret; + + ret = qm_pm_get_sync(qm); + if (ret) { + dev_err(&qm->pdev->dev, "failed to get runtime PM for controller\n"); + return; + } + + err_result = qm_process_dev_error(qm); + if (err_result == ACC_ERR_NEED_RESET) + (void)qm_controller_reset(qm); + else if (err_result == ACC_ERR_NEED_FUNC_RESET) + qm_function_reset(qm); + + qm_pm_put_sync(qm); +} + +static void qm_pf_reset_vf_prepare(struct hisi_qm *qm, + enum qm_stop_reason stop_reason) +{ + enum qm_ifc_cmd cmd = QM_VF_PREPARE_DONE; + struct pci_dev *pdev = qm->pdev; + int ret; + + ret = qm_reset_prepare_ready(qm); + if (ret) { + dev_err(&pdev->dev, "reset prepare not ready!\n"); + atomic_set(&qm->status.flags, QM_STOP); + cmd = QM_VF_PREPARE_FAIL; + goto err_prepare; + } + + ret = hisi_qm_stop(qm, stop_reason); + if (ret) { + dev_err(&pdev->dev, "failed to stop QM, ret = %d.\n", ret); + atomic_set(&qm->status.flags, QM_STOP); + cmd = QM_VF_PREPARE_FAIL; + goto err_prepare; + } else { + goto out; + } + +err_prepare: + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET); + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET); +out: + pci_save_state(pdev); + ret = qm_ping_pf(qm, cmd); + if (ret) + dev_warn(&pdev->dev, "PF responds timeout in reset prepare!\n"); +} + +static void qm_pf_reset_vf_done(struct hisi_qm *qm) +{ + enum qm_ifc_cmd cmd = QM_VF_START_DONE; + struct pci_dev *pdev = qm->pdev; + int ret; + + pci_restore_state(pdev); + ret = qm_restart(qm); + if (ret) { + dev_err(&pdev->dev, "failed to start QM, ret = %d.\n", ret); + cmd = QM_VF_START_FAIL; + } + + qm_cmd_init(qm); + ret = qm_ping_pf(qm, cmd); + if (ret) + dev_warn(&pdev->dev, "PF responds timeout in reset done!\n"); + + qm_reset_bit_clear(qm); +} + +static void qm_vf_update_isolate_info(struct hisi_qm *qm, u32 data) +{ + /* Updating the local isolation status. */ + mutex_lock(&qm->isolate_data.isolate_lock); + if (data & QM_ISOLATED_STATE) + qm->isolate_data.is_isolate = true; + else + qm->isolate_data.is_isolate = false; + qm->isolate_data.err_threshold = data & QM_ISOLATED_THRESHOLD_MASK; + mutex_unlock(&qm->isolate_data.isolate_lock); +} + +static int qm_wait_pf_reset_finish(struct hisi_qm *qm, enum qm_stop_reason stop_reason) +{ + struct device *dev = &qm->pdev->dev; + u32 val, cmd, data; + int ret; + + /* Wait for reset to finish */ + ret = readl_relaxed_poll_timeout(qm->io_base + QM_IFC_INT_SOURCE_V, val, + val == BIT(0), QM_VF_RESET_WAIT_US, + QM_VF_RESET_WAIT_TIMEOUT_US); + /* hardware completion status should be available by this time */ + if (ret) { + dev_err(dev, "couldn't get reset done status from PF, timeout!\n"); + return -ETIMEDOUT; + } + + /* + * Whether message is got successfully, + * VF needs to ack PF by clearing the interrupt. + */ + ret = qm->ops->get_ifc(qm, &cmd, &data, 0); + qm_clear_cmd_interrupt(qm, 0); + if (ret) { + dev_err(dev, "failed to get command from PF in reset done!\n"); + return ret; + } + + if (cmd != QM_PF_RESET_DONE) { + dev_err(dev, "the command(0x%x) is not reset done!\n", cmd); + return -EINVAL; + } + + /* The VF processes the device isolation information received from the RAS reset. */ + if (stop_reason == QM_SOFT_RESET) + qm_vf_update_isolate_info(qm, data); + + return 0; +} + +static void qm_pf_reset_vf_process(struct hisi_qm *qm, + enum qm_stop_reason stop_reason) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + dev_info(dev, "device reset start...\n"); + + /* The message is obtained by querying the register during resetting */ + qm_cmd_uninit(qm); + qm_pf_reset_vf_prepare(qm, stop_reason); + + ret = qm_wait_pf_reset_finish(qm, stop_reason); + if (ret) + goto err_get_status; + + qm_pf_reset_vf_done(qm); + + dev_info(dev, "device reset done.\n"); + + return; + +err_get_status: + if (stop_reason == QM_SOFT_RESET) { + /* Update local isolation status on PF-VF reset failure. */ + mutex_lock(&qm->isolate_data.isolate_lock); + qm->isolate_data.is_isolate = true; + mutex_unlock(&qm->isolate_data.isolate_lock); + } + qm_cmd_init(qm); + qm_reset_bit_clear(qm); +} + +static void qm_vf_get_isolate_data(struct hisi_qm *qm, u32 fun_num) +{ + u32 data = qm->isolate_data.err_threshold; + struct device *dev = &qm->pdev->dev; + int ret; + + if (qm->isolate_data.is_isolate) + data |= QM_ISOLATED_STATE; + + ret = qm_ping_single_vf(qm, QM_PF_SET_ISOLATE, data, fun_num); + if (ret) + dev_err(dev, "failed to send command(0x%x) to VF(%u)!\n", + (unsigned int)QM_PF_SET_ISOLATE, fun_num); +} + +static void qm_handle_cmd_msg(struct hisi_qm *qm, u32 fun_num) +{ + struct device *dev = &qm->pdev->dev; + enum qm_ifc_cmd cmd; + u32 data; + int ret; + + /* + * Get the msg from source by sending mailbox. Whether message is got + * successfully, destination needs to ack source by clearing the interrupt. + */ + ret = qm->ops->get_ifc(qm, &cmd, &data, fun_num); + qm_clear_cmd_interrupt(qm, BIT(fun_num)); + if (ret) { + dev_err(dev, "failed to get command from source!\n"); + return; + } + + switch (cmd) { + case QM_PF_FLR_PREPARE: + qm_pf_reset_vf_process(qm, QM_DOWN); + break; + case QM_PF_SRST_PREPARE: + qm_pf_reset_vf_process(qm, QM_SOFT_RESET); + break; + case QM_VF_GET_QOS: + qm_vf_get_qos(qm, fun_num); + break; + case QM_PF_SET_QOS: + qm->mb_qos = data; + break; + case QM_FUNCTION_RESET: + dev_info(dev, "function reset start...\n"); + qm_reset_function(qm); + dev_info(dev, "function reset end!\n"); + break; + case QM_VF_GET_ISOLATE: + /* Read the isolation policy of the PF during VF initialization. */ + qm_vf_get_isolate_data(qm, fun_num); + break; + case QM_PF_SET_ISOLATE: + qm_vf_update_isolate_info(qm, data); + break; + default: + dev_err(dev, "unsupported command(0x%x) sent by function(%u)!\n", cmd, fun_num); + break; + } +} + +static void qm_cmd_process(struct work_struct *cmd_process) +{ + struct hisi_qm *qm = container_of(cmd_process, + struct hisi_qm, cmd_process); + u32 vfs_num = qm->vfs_num; + u64 val; + u32 i; + + if (qm->fun_type == QM_HW_PF) { + val = readq(qm->io_base + QM_IFC_INT_SOURCE_P); + if (!val) + return; + + for (i = 1; i <= vfs_num; i++) { + if (val & BIT(i)) + qm_handle_cmd_msg(qm, i); + } + + return; + } + + qm_handle_cmd_msg(qm, 0); +} + +/** + * hisi_qm_alg_register() - Register alg to crypto. + * @qm: The qm needs add. + * @qm_list: The qm list. + * @guard: Guard of qp_num. + * + * Register algorithm to crypto when the function is satisfy guard. + */ +int hisi_qm_alg_register(struct hisi_qm *qm, struct hisi_qm_list *qm_list, int guard) +{ + struct device *dev = &qm->pdev->dev; + + if (qm->ver <= QM_HW_V2 && qm->use_sva) { + dev_info(dev, "HW V2 not both use uacce sva mode and hardware crypto algs.\n"); + return 0; + } + + if (qm->qp_num < guard) { + dev_info(dev, "qp_num is less than task need.\n"); + return 0; + } + + return qm_list->register_to_crypto(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_alg_register); + +/** + * hisi_qm_alg_unregister() - Unregister alg from crypto. + * @qm: The qm needs delete. + * @qm_list: The qm list. + * @guard: Guard of qp_num. + * + * Unregister algorithm from crypto when the last function is satisfy guard. + */ +void hisi_qm_alg_unregister(struct hisi_qm *qm, struct hisi_qm_list *qm_list, int guard) +{ + if (qm->ver <= QM_HW_V2 && qm->use_sva) + return; + + if (qm->qp_num < guard) + return; + + qm_list->unregister_from_crypto(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_alg_unregister); + +static void qm_unregister_abnormal_irq(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 irq_vector, val; + + if (qm->fun_type == QM_HW_VF && qm->ver < QM_HW_V3) + return; + + val = qm->cap_tables.qm_cap_table[QM_ABNORMAL_IRQ].cap_val; + if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_ABN_IRQ_TYPE_MASK)) + return; + + irq_vector = val & QM_IRQ_VECTOR_MASK; + free_irq(pci_irq_vector(pdev, irq_vector), qm); +} + +static int qm_register_abnormal_irq(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 irq_vector, val; + int ret; + + val = qm->cap_tables.qm_cap_table[QM_ABNORMAL_IRQ].cap_val; + if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_ABN_IRQ_TYPE_MASK)) + return 0; + irq_vector = val & QM_IRQ_VECTOR_MASK; + + /* For VF, this is a reserved interrupt in V3 version. */ + if (qm->fun_type == QM_HW_VF) { + if (qm->ver < QM_HW_V3) + return 0; + + ret = request_irq(pci_irq_vector(pdev, irq_vector), qm_rsvd_irq, + IRQF_NO_AUTOEN, qm->dev_name, qm); + if (ret) { + dev_err(&pdev->dev, "failed to request reserved irq, ret = %d!\n", ret); + return ret; + } + return 0; + } + + ret = request_irq(pci_irq_vector(pdev, irq_vector), qm_abnormal_irq, 0, qm->dev_name, qm); + if (ret) + dev_err(&qm->pdev->dev, "failed to request abnormal irq, ret = %d!\n", ret); + + return ret; +} + +static void qm_unregister_mb_cmd_irq(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 irq_vector, val; + + val = qm->cap_tables.qm_cap_table[QM_MB_IRQ].cap_val; + if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK)) + return; + + irq_vector = val & QM_IRQ_VECTOR_MASK; + free_irq(pci_irq_vector(pdev, irq_vector), qm); +} + +static int qm_register_mb_cmd_irq(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 irq_vector, val; + int ret; + + val = qm->cap_tables.qm_cap_table[QM_MB_IRQ].cap_val; + if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK)) + return 0; + + irq_vector = val & QM_IRQ_VECTOR_MASK; + ret = request_irq(pci_irq_vector(pdev, irq_vector), qm_mb_cmd_irq, 0, qm->dev_name, qm); + if (ret) + dev_err(&pdev->dev, "failed to request function communication irq, ret = %d", ret); + + return ret; +} + +static void qm_unregister_aeq_irq(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 irq_vector, val; + + val = qm->cap_tables.qm_cap_table[QM_AEQ_IRQ].cap_val; + if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK)) + return; + + irq_vector = val & QM_IRQ_VECTOR_MASK; + free_irq(pci_irq_vector(pdev, irq_vector), qm); +} + +static int qm_register_aeq_irq(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 irq_vector, val; + int ret; + + val = qm->cap_tables.qm_cap_table[QM_AEQ_IRQ].cap_val; + if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK)) + return 0; + + irq_vector = val & QM_IRQ_VECTOR_MASK; + ret = request_threaded_irq(pci_irq_vector(pdev, irq_vector), NULL, + qm_aeq_thread, IRQF_ONESHOT, qm->dev_name, qm); + if (ret) + dev_err(&pdev->dev, "failed to request eq irq, ret = %d", ret); + + return ret; +} + +static void qm_unregister_eq_irq(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 irq_vector, val; + + val = qm->cap_tables.qm_cap_table[QM_EQ_IRQ].cap_val; + if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK)) + return; + + irq_vector = val & QM_IRQ_VECTOR_MASK; + free_irq(pci_irq_vector(pdev, irq_vector), qm); +} + +static int qm_register_eq_irq(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 irq_vector, val; + int ret; + + val = qm->cap_tables.qm_cap_table[QM_EQ_IRQ].cap_val; + if (!((val >> QM_IRQ_TYPE_SHIFT) & QM_IRQ_TYPE_MASK)) + return 0; + + irq_vector = val & QM_IRQ_VECTOR_MASK; + ret = request_irq(pci_irq_vector(pdev, irq_vector), qm_eq_irq, 0, qm->dev_name, qm); + if (ret) + dev_err(&pdev->dev, "failed to request eq irq, ret = %d", ret); + + return ret; +} + +static void qm_irqs_unregister(struct hisi_qm *qm) +{ + qm_unregister_mb_cmd_irq(qm); + qm_unregister_abnormal_irq(qm); + qm_unregister_aeq_irq(qm); + qm_unregister_eq_irq(qm); +} + +static int qm_irqs_register(struct hisi_qm *qm) +{ + int ret; + + ret = qm_register_eq_irq(qm); + if (ret) + return ret; + + ret = qm_register_aeq_irq(qm); + if (ret) + goto free_eq_irq; + + ret = qm_register_abnormal_irq(qm); + if (ret) + goto free_aeq_irq; + + ret = qm_register_mb_cmd_irq(qm); + if (ret) + goto free_abnormal_irq; + + return 0; + +free_abnormal_irq: + qm_unregister_abnormal_irq(qm); +free_aeq_irq: + qm_unregister_aeq_irq(qm); +free_eq_irq: + qm_unregister_eq_irq(qm); + return ret; +} + +static int qm_get_qp_num(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + bool is_db_isolation; + + /* VF's qp_num assigned by PF in v2, and VF can get qp_num by vft. */ + if (qm->fun_type == QM_HW_VF) { + if (qm->ver != QM_HW_V1) + /* v2 starts to support get vft by mailbox */ + return hisi_qm_get_vft(qm, &qm->qp_base, &qm->qp_num); + + return 0; + } + + is_db_isolation = test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps); + qm->ctrl_qp_num = hisi_qm_get_hw_info(qm, qm_basic_info, QM_TOTAL_QP_NUM_CAP, true); + qm->max_qp_num = hisi_qm_get_hw_info(qm, qm_basic_info, + QM_FUNC_MAX_QP_CAP, is_db_isolation); + + if (qm->qp_num <= qm->max_qp_num) + return 0; + + if (test_bit(QM_MODULE_PARAM, &qm->misc_ctl)) { + /* Check whether the set qp number is valid */ + dev_err(dev, "qp num(%u) is more than max qp num(%u)!\n", + qm->qp_num, qm->max_qp_num); + return -EINVAL; + } + + dev_info(dev, "Default qp num(%u) is too big, reset it to Function's max qp num(%u)!\n", + qm->qp_num, qm->max_qp_num); + qm->qp_num = qm->max_qp_num; + qm->debug.curr_qm_qp_num = qm->qp_num; + + return 0; +} + +static int qm_pre_store_caps(struct hisi_qm *qm) +{ + struct hisi_qm_cap_record *qm_cap; + struct pci_dev *pdev = qm->pdev; + size_t i, size; + + size = ARRAY_SIZE(qm_cap_query_info); + qm_cap = devm_kcalloc(&pdev->dev, sizeof(*qm_cap), size, GFP_KERNEL); + if (!qm_cap) + return -ENOMEM; + + for (i = 0; i < size; i++) { + qm_cap[i].type = qm_cap_query_info[i].type; + qm_cap[i].name = qm_cap_query_info[i].name; + qm_cap[i].cap_val = hisi_qm_get_cap_value(qm, qm_cap_query_info, + i, qm->cap_ver); + } + + qm->cap_tables.qm_cap_table = qm_cap; + qm->cap_tables.qm_cap_size = size; + + return 0; +} + +static int qm_get_hw_caps(struct hisi_qm *qm) +{ + const struct hisi_qm_cap_info *cap_info = qm->fun_type == QM_HW_PF ? + qm_cap_info_pf : qm_cap_info_vf; + u32 size = qm->fun_type == QM_HW_PF ? ARRAY_SIZE(qm_cap_info_pf) : + ARRAY_SIZE(qm_cap_info_vf); + u32 val, i; + + /* Doorbell isolate register is a independent register. */ + val = hisi_qm_get_hw_info(qm, qm_cap_info_comm, QM_SUPPORT_DB_ISOLATION, true); + if (val) + set_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps); + + if (qm->ver >= QM_HW_V3) { + val = readl(qm->io_base + QM_FUNC_CAPS_REG); + qm->cap_ver = val & QM_CAPBILITY_VERSION; + } + + /* Get PF/VF common capbility */ + for (i = 1; i < ARRAY_SIZE(qm_cap_info_comm); i++) { + val = hisi_qm_get_hw_info(qm, qm_cap_info_comm, i, qm->cap_ver); + if (val) + set_bit(qm_cap_info_comm[i].type, &qm->caps); + } + + /* Get PF/VF different capbility */ + for (i = 0; i < size; i++) { + val = hisi_qm_get_hw_info(qm, cap_info, i, qm->cap_ver); + if (val) + set_bit(cap_info[i].type, &qm->caps); + } + + /* Fetch and save the value of qm capability registers */ + return qm_pre_store_caps(qm); +} + +static void qm_get_version(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + u32 sub_version_id; + + qm->ver = pdev->revision; + + if (pdev->revision == QM_HW_V3) { + sub_version_id = readl(qm->io_base + QM_SUB_VERSION_ID); + if (sub_version_id) + qm->ver = sub_version_id; + } +} + +static int qm_get_pci_res(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + struct device *dev = &pdev->dev; + int ret; + + ret = pci_request_mem_regions(pdev, qm->dev_name); + if (ret < 0) { + dev_err(dev, "Failed to request mem regions!\n"); + return ret; + } + + qm->phys_base = pci_resource_start(pdev, PCI_BAR_2); + qm->io_base = ioremap(qm->phys_base, pci_resource_len(pdev, PCI_BAR_2)); + if (!qm->io_base) { + ret = -EIO; + goto err_request_mem_regions; + } + + qm_get_version(qm); + + ret = qm_get_hw_caps(qm); + if (ret) + goto err_ioremap; + + if (test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps)) { + qm->db_interval = QM_QP_DB_INTERVAL; + qm->db_phys_base = pci_resource_start(pdev, PCI_BAR_4); + qm->db_io_base = ioremap(qm->db_phys_base, + pci_resource_len(pdev, PCI_BAR_4)); + if (!qm->db_io_base) { + ret = -EIO; + goto err_ioremap; + } + } else { + qm->db_phys_base = qm->phys_base; + qm->db_io_base = qm->io_base; + qm->db_interval = 0; + } + + hisi_qm_pre_init(qm); + ret = qm_get_qp_num(qm); + if (ret) + goto err_db_ioremap; + + return 0; + +err_db_ioremap: + if (test_bit(QM_SUPPORT_DB_ISOLATION, &qm->caps)) + iounmap(qm->db_io_base); +err_ioremap: + iounmap(qm->io_base); +err_request_mem_regions: + pci_release_mem_regions(pdev); + return ret; +} + +static int qm_clear_device(struct hisi_qm *qm) +{ + acpi_handle handle = ACPI_HANDLE(&qm->pdev->dev); + int ret; + + if (qm->fun_type == QM_HW_VF) + return 0; + + /* Device does not support reset, return */ + if (!qm->err_ini->err_info_init) + return 0; + qm->err_ini->err_info_init(qm); + + if (!handle) + return 0; + + /* No reset method, return */ + if (!acpi_has_method(handle, qm->err_info.acpi_rst)) + return 0; + + ret = qm_master_ooo_check(qm); + if (ret) { + writel(0x0, qm->io_base + ACC_MASTER_GLOBAL_CTRL); + return ret; + } + + if (qm->err_ini->set_priv_status) { + ret = qm->err_ini->set_priv_status(qm); + if (ret) { + writel(0x0, qm->io_base + ACC_MASTER_GLOBAL_CTRL); + return ret; + } + } + + return qm_reset_device(qm); +} + +static int hisi_qm_pci_init(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + struct device *dev = &pdev->dev; + unsigned int num_vec; + int ret; + + ret = pci_enable_device_mem(pdev); + if (ret < 0) { + dev_err(dev, "Failed to enable device mem!\n"); + return ret; + } + + ret = qm_get_pci_res(qm); + if (ret) + goto err_disable_pcidev; + + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); + if (ret < 0) + goto err_get_pci_res; + pci_set_master(pdev); + + num_vec = qm_get_irq_num(qm); + if (!num_vec) { + dev_err(dev, "Device irq num is zero!\n"); + ret = -EINVAL; + goto err_get_pci_res; + } + num_vec = roundup_pow_of_two(num_vec); + ret = pci_alloc_irq_vectors(pdev, num_vec, num_vec, PCI_IRQ_MSI); + if (ret < 0) { + dev_err(dev, "Failed to enable MSI vectors!\n"); + goto err_get_pci_res; + } + + ret = qm_clear_device(qm); + if (ret) + goto err_free_vectors; + + return 0; + +err_free_vectors: + pci_free_irq_vectors(pdev); +err_get_pci_res: + qm_put_pci_res(qm); +err_disable_pcidev: + pci_disable_device(pdev); + return ret; +} + +static int hisi_qm_init_work(struct hisi_qm *qm) +{ + int i; + + for (i = 0; i < qm->qp_num; i++) + INIT_WORK(&qm->poll_data[i].work, qm_work_process); + + if (qm->fun_type == QM_HW_PF) + INIT_WORK(&qm->rst_work, hisi_qm_controller_reset); + + if (qm->ver > QM_HW_V2) + INIT_WORK(&qm->cmd_process, qm_cmd_process); + + qm->wq = alloc_workqueue("%s", WQ_HIGHPRI | WQ_MEM_RECLAIM | + WQ_UNBOUND, num_online_cpus(), + pci_name(qm->pdev)); + if (!qm->wq) { + pci_err(qm->pdev, "failed to alloc workqueue!\n"); + return -ENOMEM; + } + + return 0; +} + +static int hisi_qp_alloc_memory(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + u16 sq_depth, cq_depth; + size_t qp_dma_size; + int i, ret; + + qm->qp_array = kzalloc_objs(struct hisi_qp, qm->qp_num); + if (!qm->qp_array) + return -ENOMEM; + + qm->poll_data = kzalloc_objs(struct hisi_qm_poll_data, qm->qp_num); + if (!qm->poll_data) { + kfree(qm->qp_array); + return -ENOMEM; + } + + qm_get_xqc_depth(qm, &sq_depth, &cq_depth, QM_QP_DEPTH_CAP); + + /* one more page for device or qp statuses */ + qp_dma_size = qm->sqe_size * sq_depth + sizeof(struct qm_cqe) * cq_depth; + qp_dma_size = PAGE_ALIGN(qp_dma_size) + PAGE_SIZE; + for (i = 0; i < qm->qp_num; i++) { + qm->poll_data[i].qm = qm; + ret = hisi_qp_memory_init(qm, qp_dma_size, i, sq_depth, cq_depth); + if (ret) + goto err_init_qp_mem; + + dev_dbg(dev, "allocate qp dma buf size=%zx)\n", qp_dma_size); + } + + return 0; +err_init_qp_mem: + hisi_qp_memory_uninit(qm, i); + + return ret; +} + +static int hisi_qm_alloc_rsv_buf(struct hisi_qm *qm) +{ + struct qm_rsv_buf *xqc_buf = &qm->xqc_buf; + struct qm_dma *xqc_dma = &xqc_buf->qcdma; + struct device *dev = &qm->pdev->dev; + size_t off = 0; + +#define QM_XQC_BUF_INIT(xqc_buf, type) do { \ + (xqc_buf)->type = ((xqc_buf)->qcdma.va + (off)); \ + (xqc_buf)->type##_dma = (xqc_buf)->qcdma.dma + (off); \ + off += QMC_ALIGN(sizeof(struct qm_##type)); \ +} while (0) + + xqc_dma->size = QMC_ALIGN(sizeof(struct qm_eqc)) + + QMC_ALIGN(sizeof(struct qm_aeqc)) + + QMC_ALIGN(sizeof(struct qm_sqc)) + + QMC_ALIGN(sizeof(struct qm_cqc)); + xqc_dma->va = dma_alloc_coherent(dev, xqc_dma->size, + &xqc_dma->dma, GFP_KERNEL); + if (!xqc_dma->va) + return -ENOMEM; + + QM_XQC_BUF_INIT(xqc_buf, eqc); + QM_XQC_BUF_INIT(xqc_buf, aeqc); + QM_XQC_BUF_INIT(xqc_buf, sqc); + QM_XQC_BUF_INIT(xqc_buf, cqc); + + return 0; +} + +static int hisi_qm_memory_init(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + int ret, total_func; + size_t off = 0; + + if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps)) { + total_func = pci_sriov_get_totalvfs(qm->pdev) + 1; + qm->factor = kzalloc_objs(struct qm_shaper_factor, total_func); + if (!qm->factor) + return -ENOMEM; + + /* Only the PF value needs to be initialized */ + qm->factor[0].func_qos = QM_QOS_MAX_VAL; + } + +#define QM_INIT_BUF(qm, type, num) do { \ + (qm)->type = ((qm)->qdma.va + (off)); \ + (qm)->type##_dma = (qm)->qdma.dma + (off); \ + off += QMC_ALIGN(sizeof(struct qm_##type) * (num)); \ +} while (0) + + idr_init(&qm->qp_idr); + qm_get_xqc_depth(qm, &qm->eq_depth, &qm->aeq_depth, QM_XEQ_DEPTH_CAP); + qm->qdma.size = QMC_ALIGN(sizeof(struct qm_eqe) * qm->eq_depth) + + QMC_ALIGN(sizeof(struct qm_aeqe) * qm->aeq_depth) + + QMC_ALIGN(sizeof(struct qm_sqc) * qm->qp_num) + + QMC_ALIGN(sizeof(struct qm_cqc) * qm->qp_num); + qm->qdma.va = dma_alloc_coherent(dev, qm->qdma.size, &qm->qdma.dma, + GFP_ATOMIC); + dev_dbg(dev, "allocate qm dma buf size=%zx)\n", qm->qdma.size); + if (!qm->qdma.va) { + ret = -ENOMEM; + goto err_destroy_idr; + } + + QM_INIT_BUF(qm, eqe, qm->eq_depth); + QM_INIT_BUF(qm, aeqe, qm->aeq_depth); + QM_INIT_BUF(qm, sqc, qm->qp_num); + QM_INIT_BUF(qm, cqc, qm->qp_num); + + ret = hisi_qm_alloc_rsv_buf(qm); + if (ret) + goto err_free_qdma; + + ret = hisi_qp_alloc_memory(qm); + if (ret) + goto err_free_reserve_buf; + + return 0; + +err_free_reserve_buf: + hisi_qm_free_rsv_buf(qm); +err_free_qdma: + dma_free_coherent(dev, qm->qdma.size, qm->qdma.va, qm->qdma.dma); +err_destroy_idr: + idr_destroy(&qm->qp_idr); + if (test_bit(QM_SUPPORT_FUNC_QOS, &qm->caps)) + kfree(qm->factor); + + return ret; +} + +/** + * hisi_qm_init() - Initialize configures about qm. + * @qm: The qm needing init. + * + * This function init qm, then we can call hisi_qm_start to put qm into work. + */ +int hisi_qm_init(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + struct device *dev = &pdev->dev; + int ret; + + ret = hisi_qm_pci_init(qm); + if (ret) + return ret; + + ret = qm_irqs_register(qm); + if (ret) + goto err_pci_init; + + if (qm->fun_type == QM_HW_PF) { + /* Set the doorbell timeout to QM_DB_TIMEOUT_CFG ns. */ + writel(QM_DB_TIMEOUT_SET, qm->io_base + QM_DB_TIMEOUT_CFG); + qm_disable_clock_gate(qm); + ret = qm_dev_mem_reset(qm); + if (ret) { + dev_err(dev, "failed to reset device memory\n"); + goto err_irq_register; + } + } + + if (qm->mode == UACCE_MODE_SVA) { + ret = qm_alloc_uacce(qm); + if (ret < 0) + dev_warn(dev, "fail to alloc uacce (%d)\n", ret); + } + + ret = hisi_qm_memory_init(qm); + if (ret) + goto err_alloc_uacce; + + ret = hisi_qm_init_work(qm); + if (ret) + goto err_free_qm_memory; + + qm_cmd_init(qm); + hisi_mig_region_enable(qm); + + return 0; + +err_free_qm_memory: + hisi_qm_memory_uninit(qm); +err_alloc_uacce: + qm_remove_uacce(qm); +err_irq_register: + qm_irqs_unregister(qm); +err_pci_init: + hisi_qm_pci_uninit(qm); + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_init); + +/** + * hisi_qm_get_dfx_access() - Try to get dfx access. + * @qm: pointer to accelerator device. + * + * Try to get dfx access, then user can get message. + * + * If device is in suspended, return failure, otherwise + * bump up the runtime PM usage counter. + */ +int hisi_qm_get_dfx_access(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + + if (pm_runtime_suspended(dev)) { + dev_info(dev, "can not read/write - device in suspended.\n"); + return -EAGAIN; + } + + return qm_pm_get_sync(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_get_dfx_access); + +/** + * hisi_qm_put_dfx_access() - Put dfx access. + * @qm: pointer to accelerator device. + * + * Put dfx access, drop runtime PM usage counter. + */ +void hisi_qm_put_dfx_access(struct hisi_qm *qm) +{ + qm_pm_put_sync(qm); +} +EXPORT_SYMBOL_GPL(hisi_qm_put_dfx_access); + +/** + * hisi_qm_pm_init() - Initialize qm runtime PM. + * @qm: pointer to accelerator device. + * + * Function that initialize qm runtime PM. + */ +void hisi_qm_pm_init(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + + if (!test_bit(QM_SUPPORT_RPM, &qm->caps)) + return; + + pm_runtime_set_autosuspend_delay(dev, QM_AUTOSUSPEND_DELAY); + pm_runtime_use_autosuspend(dev); + pm_runtime_put_noidle(dev); +} +EXPORT_SYMBOL_GPL(hisi_qm_pm_init); + +/** + * hisi_qm_pm_uninit() - Uninitialize qm runtime PM. + * @qm: pointer to accelerator device. + * + * Function that uninitialize qm runtime PM. + */ +void hisi_qm_pm_uninit(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + + if (!test_bit(QM_SUPPORT_RPM, &qm->caps)) + return; + + pm_runtime_get_noresume(dev); + pm_runtime_dont_use_autosuspend(dev); +} +EXPORT_SYMBOL_GPL(hisi_qm_pm_uninit); + +static int qm_prepare_for_suspend(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + int ret; + + ret = qm->ops->set_msi(qm, false); + if (ret) { + pci_err(pdev, "failed to disable MSI before suspending!\n"); + return ret; + } + + ret = qm_master_ooo_check(qm); + if (ret) + return ret; + + if (qm->err_ini->set_priv_status) { + ret = qm->err_ini->set_priv_status(qm); + if (ret) + return ret; + } + + ret = qm_set_pf_mse(qm, false); + if (ret) + pci_err(pdev, "failed to disable MSE before suspending!\n"); + + return ret; +} + +static int qm_rebuild_for_resume(struct hisi_qm *qm) +{ + struct pci_dev *pdev = qm->pdev; + int ret; + + ret = qm_set_pf_mse(qm, true); + if (ret) { + pci_err(pdev, "failed to enable MSE after resuming!\n"); + return ret; + } + + ret = qm->ops->set_msi(qm, true); + if (ret) { + pci_err(pdev, "failed to enable MSI after resuming!\n"); + return ret; + } + + ret = qm_dev_hw_init(qm); + if (ret) { + pci_err(pdev, "failed to init device after resuming\n"); + return ret; + } + + qm_cmd_init(qm); + hisi_mig_region_enable(qm); + hisi_qm_dev_err_init(qm); + /* Set the doorbell timeout to QM_DB_TIMEOUT_CFG ns. */ + writel(QM_DB_TIMEOUT_SET, qm->io_base + QM_DB_TIMEOUT_CFG); + qm_disable_clock_gate(qm); + ret = qm_dev_mem_reset(qm); + if (ret) + pci_err(pdev, "failed to reset device memory\n"); + + return ret; +} + +/** + * hisi_qm_suspend() - Runtime suspend of given device. + * @dev: device to suspend. + * + * Function that suspend the device. + */ +int hisi_qm_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct hisi_qm *qm = pci_get_drvdata(pdev); + int ret; + + pci_info(pdev, "entering suspended state\n"); + + ret = hisi_qm_stop(qm, QM_NORMAL); + if (ret) { + pci_err(pdev, "failed to stop qm(%d)\n", ret); + return ret; + } + + ret = qm_prepare_for_suspend(qm); + if (ret) + pci_err(pdev, "failed to prepare suspended(%d)\n", ret); + + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_suspend); + +/** + * hisi_qm_resume() - Runtime resume of given device. + * @dev: device to resume. + * + * Function that resume the device. + */ +int hisi_qm_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct hisi_qm *qm = pci_get_drvdata(pdev); + int ret; + + pci_info(pdev, "resuming from suspend state\n"); + + ret = qm_rebuild_for_resume(qm); + if (ret) { + pci_err(pdev, "failed to rebuild resume(%d)\n", ret); + return ret; + } + + ret = hisi_qm_start(qm); + if (ret) { + if (qm_check_dev_error(qm)) { + pci_info(pdev, "failed to start qm due to device error, device will be reset!\n"); + return 0; + } + + pci_err(pdev, "failed to start qm(%d)!\n", ret); + } + + return ret; +} +EXPORT_SYMBOL_GPL(hisi_qm_resume); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Zhou Wang <wangzhou1@hisilicon.com>"); +MODULE_DESCRIPTION("HiSilicon Accelerator queue manager driver"); diff --git a/drivers/crypto/hisilicon/qm_common.h b/drivers/crypto/hisilicon/qm_common.h new file mode 100644 index 000000000..0760bf55f --- /dev/null +++ b/drivers/crypto/hisilicon/qm_common.h @@ -0,0 +1,79 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2022 HiSilicon Limited. */ +#ifndef QM_COMMON_H +#define QM_COMMON_H + +#define QM_DBG_READ_LEN 256 + +struct qm_cqe { + __le32 rsvd0; + __le16 cmd_id; + __le16 rsvd1; + __le16 sq_head; + __le16 sq_num; + __le16 rsvd2; + __le16 w7; +}; + +struct qm_eqe { + __le32 dw0; +}; + +struct qm_aeqe { + __le32 dw0; +}; + +struct qm_sqc { + __le16 head; + __le16 tail; + __le32 base_l; + __le32 base_h; + __le32 dw3; + __le16 w8; + __le16 rsvd0; + __le16 pasid; + __le16 w11; + __le16 cq_num; + __le16 w13; + __le32 rsvd1; +}; + +struct qm_cqc { + __le16 head; + __le16 tail; + __le32 base_l; + __le32 base_h; + __le32 dw3; + __le16 w8; + __le16 rsvd0; + __le16 pasid; + __le16 w11; + __le32 dw6; + __le32 rsvd1; +}; + +struct qm_eqc { + __le16 head; + __le16 tail; + __le32 base_l; + __le32 base_h; + __le32 dw3; + __le32 rsvd[2]; + __le32 dw6; +}; + +struct qm_aeqc { + __le16 head; + __le16 tail; + __le32 base_l; + __le32 base_h; + __le32 dw3; + __le32 rsvd[2]; + __le32 dw6; +}; + +int qm_set_and_get_xqc(struct hisi_qm *qm, u8 cmd, void *xqc, u32 qp_id, bool op); +void hisi_qm_show_last_dfx_regs(struct hisi_qm *qm); +void hisi_qm_set_algqos_init(struct hisi_qm *qm); + +#endif diff --git a/drivers/crypto/hisilicon/sec/Makefile b/drivers/crypto/hisilicon/sec/Makefile new file mode 100644 index 000000000..a55b698e0 --- /dev/null +++ b/drivers/crypto/hisilicon/sec/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_CRYPTO_DEV_HISI_SEC) += hisi_sec.o +hisi_sec-y = sec_algs.o sec_drv.o diff --git a/drivers/crypto/hisilicon/sec/sec_algs.c b/drivers/crypto/hisilicon/sec/sec_algs.c new file mode 100644 index 000000000..85eecbb40 --- /dev/null +++ b/drivers/crypto/hisilicon/sec/sec_algs.c @@ -0,0 +1,1122 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2016-2017 HiSilicon Limited. */ +#include <linux/crypto.h> +#include <linux/dma-mapping.h> +#include <linux/dmapool.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/slab.h> + +#include <crypto/aes.h> +#include <crypto/algapi.h> +#include <crypto/internal/des.h> +#include <crypto/skcipher.h> +#include <crypto/xts.h> +#include <crypto/internal/skcipher.h> + +#include "sec_drv.h" + +#define SEC_MAX_CIPHER_KEY 64 +#define SEC_REQ_LIMIT SZ_32M + +struct sec_c_alg_cfg { + unsigned c_alg : 3; + unsigned c_mode : 3; + unsigned key_len : 2; + unsigned c_width : 2; +}; + +static const struct sec_c_alg_cfg sec_c_alg_cfgs[] = { + [SEC_C_DES_ECB_64] = { + .c_alg = SEC_C_ALG_DES, + .c_mode = SEC_C_MODE_ECB, + .key_len = SEC_KEY_LEN_DES, + }, + [SEC_C_DES_CBC_64] = { + .c_alg = SEC_C_ALG_DES, + .c_mode = SEC_C_MODE_CBC, + .key_len = SEC_KEY_LEN_DES, + }, + [SEC_C_3DES_ECB_192_3KEY] = { + .c_alg = SEC_C_ALG_3DES, + .c_mode = SEC_C_MODE_ECB, + .key_len = SEC_KEY_LEN_3DES_3_KEY, + }, + [SEC_C_3DES_ECB_192_2KEY] = { + .c_alg = SEC_C_ALG_3DES, + .c_mode = SEC_C_MODE_ECB, + .key_len = SEC_KEY_LEN_3DES_2_KEY, + }, + [SEC_C_3DES_CBC_192_3KEY] = { + .c_alg = SEC_C_ALG_3DES, + .c_mode = SEC_C_MODE_CBC, + .key_len = SEC_KEY_LEN_3DES_3_KEY, + }, + [SEC_C_3DES_CBC_192_2KEY] = { + .c_alg = SEC_C_ALG_3DES, + .c_mode = SEC_C_MODE_CBC, + .key_len = SEC_KEY_LEN_3DES_2_KEY, + }, + [SEC_C_AES_ECB_128] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_ECB, + .key_len = SEC_KEY_LEN_AES_128, + }, + [SEC_C_AES_ECB_192] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_ECB, + .key_len = SEC_KEY_LEN_AES_192, + }, + [SEC_C_AES_ECB_256] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_ECB, + .key_len = SEC_KEY_LEN_AES_256, + }, + [SEC_C_AES_CBC_128] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_CBC, + .key_len = SEC_KEY_LEN_AES_128, + }, + [SEC_C_AES_CBC_192] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_CBC, + .key_len = SEC_KEY_LEN_AES_192, + }, + [SEC_C_AES_CBC_256] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_CBC, + .key_len = SEC_KEY_LEN_AES_256, + }, + [SEC_C_AES_CTR_128] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_CTR, + .key_len = SEC_KEY_LEN_AES_128, + }, + [SEC_C_AES_CTR_192] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_CTR, + .key_len = SEC_KEY_LEN_AES_192, + }, + [SEC_C_AES_CTR_256] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_CTR, + .key_len = SEC_KEY_LEN_AES_256, + }, + [SEC_C_AES_XTS_128] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_XTS, + .key_len = SEC_KEY_LEN_AES_128, + }, + [SEC_C_AES_XTS_256] = { + .c_alg = SEC_C_ALG_AES, + .c_mode = SEC_C_MODE_XTS, + .key_len = SEC_KEY_LEN_AES_256, + }, + [SEC_C_NULL] = { + }, +}; + +/* + * Mutex used to ensure safe operation of reference count of + * alg providers + */ +static DEFINE_MUTEX(algs_lock); +static unsigned int active_devs; + +static void sec_alg_skcipher_init_template(struct sec_alg_tfm_ctx *ctx, + struct sec_bd_info *req, + enum sec_cipher_alg alg) +{ + const struct sec_c_alg_cfg *cfg = &sec_c_alg_cfgs[alg]; + + memset(req, 0, sizeof(*req)); + req->w0 |= cfg->c_mode << SEC_BD_W0_C_MODE_S; + req->w1 |= cfg->c_alg << SEC_BD_W1_C_ALG_S; + req->w3 |= cfg->key_len << SEC_BD_W3_C_KEY_LEN_S; + req->w0 |= cfg->c_width << SEC_BD_W0_C_WIDTH_S; + + req->cipher_key_addr_lo = lower_32_bits(ctx->pkey); + req->cipher_key_addr_hi = upper_32_bits(ctx->pkey); +} + +static void sec_alg_skcipher_init_context(struct crypto_skcipher *atfm, + const u8 *key, + unsigned int keylen, + enum sec_cipher_alg alg) +{ + struct crypto_tfm *tfm = crypto_skcipher_tfm(atfm); + struct sec_alg_tfm_ctx *ctx = crypto_tfm_ctx(tfm); + + ctx->cipher_alg = alg; + memcpy(ctx->key, key, keylen); + sec_alg_skcipher_init_template(ctx, &ctx->req_template, + ctx->cipher_alg); +} + +static void sec_free_hw_sgl(struct sec_hw_sgl *hw_sgl, + dma_addr_t psec_sgl, struct sec_dev_info *info) +{ + struct sec_hw_sgl *sgl_current, *sgl_next; + dma_addr_t sgl_next_dma; + + sgl_current = hw_sgl; + while (sgl_current) { + sgl_next = sgl_current->next; + sgl_next_dma = sgl_current->next_sgl; + + dma_pool_free(info->hw_sgl_pool, sgl_current, psec_sgl); + + sgl_current = sgl_next; + psec_sgl = sgl_next_dma; + } +} + +static int sec_alloc_and_fill_hw_sgl(struct sec_hw_sgl **sec_sgl, + dma_addr_t *psec_sgl, + struct scatterlist *sgl, + int count, + struct sec_dev_info *info, + gfp_t gfp) +{ + struct sec_hw_sgl *sgl_current = NULL; + struct sec_hw_sgl *sgl_next; + dma_addr_t sgl_next_dma; + struct scatterlist *sg; + int ret, sge_index, i; + + if (!count) + return -EINVAL; + + for_each_sg(sgl, sg, count, i) { + sge_index = i % SEC_MAX_SGE_NUM; + if (sge_index == 0) { + sgl_next = dma_pool_zalloc(info->hw_sgl_pool, + gfp, &sgl_next_dma); + if (!sgl_next) { + ret = -ENOMEM; + goto err_free_hw_sgls; + } + + if (!sgl_current) { /* First one */ + *psec_sgl = sgl_next_dma; + *sec_sgl = sgl_next; + } else { /* Chained */ + sgl_current->entry_sum_in_sgl = SEC_MAX_SGE_NUM; + sgl_current->next_sgl = sgl_next_dma; + sgl_current->next = sgl_next; + } + sgl_current = sgl_next; + } + sgl_current->sge_entries[sge_index].buf = sg_dma_address(sg); + sgl_current->sge_entries[sge_index].len = sg_dma_len(sg); + sgl_current->data_bytes_in_sgl += sg_dma_len(sg); + } + sgl_current->entry_sum_in_sgl = count % SEC_MAX_SGE_NUM; + sgl_current->next_sgl = 0; + (*sec_sgl)->entry_sum_in_chain = count; + + return 0; + +err_free_hw_sgls: + sec_free_hw_sgl(*sec_sgl, *psec_sgl, info); + *psec_sgl = 0; + + return ret; +} + +static int sec_alg_skcipher_setkey(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen, + enum sec_cipher_alg alg) +{ + struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm); + struct device *dev = ctx->queue->dev_info->dev; + + mutex_lock(&ctx->lock); + if (ctx->key) { + /* rekeying */ + memset(ctx->key, 0, SEC_MAX_CIPHER_KEY); + } else { + /* new key */ + ctx->key = dma_alloc_coherent(dev, SEC_MAX_CIPHER_KEY, + &ctx->pkey, GFP_KERNEL); + if (!ctx->key) { + mutex_unlock(&ctx->lock); + return -ENOMEM; + } + } + mutex_unlock(&ctx->lock); + sec_alg_skcipher_init_context(tfm, key, keylen, alg); + + return 0; +} + +static int sec_alg_skcipher_setkey_aes_ecb(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen) +{ + enum sec_cipher_alg alg; + + switch (keylen) { + case AES_KEYSIZE_128: + alg = SEC_C_AES_ECB_128; + break; + case AES_KEYSIZE_192: + alg = SEC_C_AES_ECB_192; + break; + case AES_KEYSIZE_256: + alg = SEC_C_AES_ECB_256; + break; + default: + return -EINVAL; + } + + return sec_alg_skcipher_setkey(tfm, key, keylen, alg); +} + +static int sec_alg_skcipher_setkey_aes_cbc(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen) +{ + enum sec_cipher_alg alg; + + switch (keylen) { + case AES_KEYSIZE_128: + alg = SEC_C_AES_CBC_128; + break; + case AES_KEYSIZE_192: + alg = SEC_C_AES_CBC_192; + break; + case AES_KEYSIZE_256: + alg = SEC_C_AES_CBC_256; + break; + default: + return -EINVAL; + } + + return sec_alg_skcipher_setkey(tfm, key, keylen, alg); +} + +static int sec_alg_skcipher_setkey_aes_ctr(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen) +{ + enum sec_cipher_alg alg; + + switch (keylen) { + case AES_KEYSIZE_128: + alg = SEC_C_AES_CTR_128; + break; + case AES_KEYSIZE_192: + alg = SEC_C_AES_CTR_192; + break; + case AES_KEYSIZE_256: + alg = SEC_C_AES_CTR_256; + break; + default: + return -EINVAL; + } + + return sec_alg_skcipher_setkey(tfm, key, keylen, alg); +} + +static int sec_alg_skcipher_setkey_aes_xts(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen) +{ + enum sec_cipher_alg alg; + int ret; + + ret = xts_verify_key(tfm, key, keylen); + if (ret) + return ret; + + switch (keylen) { + case AES_KEYSIZE_128 * 2: + alg = SEC_C_AES_XTS_128; + break; + case AES_KEYSIZE_256 * 2: + alg = SEC_C_AES_XTS_256; + break; + default: + return -EINVAL; + } + + return sec_alg_skcipher_setkey(tfm, key, keylen, alg); +} + +static int sec_alg_skcipher_setkey_des_ecb(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen) +{ + return verify_skcipher_des_key(tfm, key) ?: + sec_alg_skcipher_setkey(tfm, key, keylen, SEC_C_DES_ECB_64); +} + +static int sec_alg_skcipher_setkey_des_cbc(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen) +{ + return verify_skcipher_des_key(tfm, key) ?: + sec_alg_skcipher_setkey(tfm, key, keylen, SEC_C_DES_CBC_64); +} + +static int sec_alg_skcipher_setkey_3des_ecb(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen) +{ + return verify_skcipher_des3_key(tfm, key) ?: + sec_alg_skcipher_setkey(tfm, key, keylen, + SEC_C_3DES_ECB_192_3KEY); +} + +static int sec_alg_skcipher_setkey_3des_cbc(struct crypto_skcipher *tfm, + const u8 *key, unsigned int keylen) +{ + return verify_skcipher_des3_key(tfm, key) ?: + sec_alg_skcipher_setkey(tfm, key, keylen, + SEC_C_3DES_CBC_192_3KEY); +} + +static void sec_alg_free_el(struct sec_request_el *el, + struct sec_dev_info *info) +{ + sec_free_hw_sgl(el->out, el->dma_out, info); + sec_free_hw_sgl(el->in, el->dma_in, info); + kfree(el->sgl_in); + kfree(el->sgl_out); + kfree(el); +} + +/* queuelock must be held */ +static int sec_send_request(struct sec_request *sec_req, struct sec_queue *queue) +{ + struct sec_request_el *el, *temp; + int ret = 0; + + mutex_lock(&sec_req->lock); + list_for_each_entry_safe(el, temp, &sec_req->elements, head) { + /* + * Add to hardware queue only under following circumstances + * 1) Software and hardware queue empty so no chain dependencies + * 2) No dependencies as new IV - (check software queue empty + * to maintain order) + * 3) No dependencies because the mode does no chaining. + * + * In other cases first insert onto the software queue which + * is then emptied as requests complete + */ + if (!queue->havesoftqueue || + (kfifo_is_empty(&queue->softqueue) && + sec_queue_empty(queue))) { + ret = sec_queue_send(queue, &el->req, sec_req); + if (ret == -EAGAIN) { + /* Wait unti we can send then try again */ + /* DEAD if here - should not happen */ + ret = -EBUSY; + goto err_unlock; + } + } else { + kfifo_put(&queue->softqueue, el); + } + } +err_unlock: + mutex_unlock(&sec_req->lock); + + return ret; +} + +static void sec_skcipher_alg_callback(struct sec_bd_info *sec_resp, + struct crypto_async_request *req_base) +{ + struct skcipher_request *skreq = container_of(req_base, + struct skcipher_request, + base); + struct sec_request *sec_req = skcipher_request_ctx(skreq); + struct sec_request *backlog_req; + struct sec_request_el *sec_req_el, *nextrequest; + struct sec_alg_tfm_ctx *ctx = sec_req->tfm_ctx; + struct crypto_skcipher *atfm = crypto_skcipher_reqtfm(skreq); + struct device *dev = ctx->queue->dev_info->dev; + int icv_or_skey_en, ret; + bool done; + + sec_req_el = list_first_entry(&sec_req->elements, struct sec_request_el, + head); + icv_or_skey_en = (sec_resp->w0 & SEC_BD_W0_ICV_OR_SKEY_EN_M) >> + SEC_BD_W0_ICV_OR_SKEY_EN_S; + if (sec_resp->w1 & SEC_BD_W1_BD_INVALID || icv_or_skey_en == 3) { + dev_err(dev, "Got an invalid answer %lu %d\n", + sec_resp->w1 & SEC_BD_W1_BD_INVALID, + icv_or_skey_en); + sec_req->err = -EINVAL; + /* + * We need to muddle on to avoid getting stuck with elements + * on the queue. Error will be reported so requester so + * it should be able to handle appropriately. + */ + } + + spin_lock_bh(&ctx->queue->queuelock); + /* Put the IV in place for chained cases */ + switch (ctx->cipher_alg) { + case SEC_C_AES_CBC_128: + case SEC_C_AES_CBC_192: + case SEC_C_AES_CBC_256: + if (sec_req_el->req.w0 & SEC_BD_W0_DE) + sg_pcopy_to_buffer(sec_req_el->sgl_out, + sg_nents(sec_req_el->sgl_out), + skreq->iv, + crypto_skcipher_ivsize(atfm), + sec_req_el->el_length - + crypto_skcipher_ivsize(atfm)); + else + sg_pcopy_to_buffer(sec_req_el->sgl_in, + sg_nents(sec_req_el->sgl_in), + skreq->iv, + crypto_skcipher_ivsize(atfm), + sec_req_el->el_length - + crypto_skcipher_ivsize(atfm)); + /* No need to sync to the device as coherent DMA */ + break; + case SEC_C_AES_CTR_128: + case SEC_C_AES_CTR_192: + case SEC_C_AES_CTR_256: + crypto_inc(skreq->iv, 16); + break; + default: + /* Do not update */ + break; + } + + if (ctx->queue->havesoftqueue && + !kfifo_is_empty(&ctx->queue->softqueue) && + sec_queue_empty(ctx->queue)) { + ret = kfifo_get(&ctx->queue->softqueue, &nextrequest); + if (ret <= 0) + dev_err(dev, + "Error getting next element from kfifo %d\n", + ret); + else + /* We know there is space so this cannot fail */ + sec_queue_send(ctx->queue, &nextrequest->req, + nextrequest->sec_req); + } else if (!list_empty(&ctx->backlog)) { + /* Need to verify there is room first */ + backlog_req = list_first_entry(&ctx->backlog, + typeof(*backlog_req), + backlog_head); + if (sec_queue_can_enqueue(ctx->queue, + backlog_req->num_elements) || + (ctx->queue->havesoftqueue && + kfifo_avail(&ctx->queue->softqueue) > + backlog_req->num_elements)) { + sec_send_request(backlog_req, ctx->queue); + crypto_request_complete(backlog_req->req_base, + -EINPROGRESS); + list_del(&backlog_req->backlog_head); + } + } + spin_unlock_bh(&ctx->queue->queuelock); + + mutex_lock(&sec_req->lock); + list_del(&sec_req_el->head); + mutex_unlock(&sec_req->lock); + sec_alg_free_el(sec_req_el, ctx->queue->dev_info); + + /* + * Request is done. + * The dance is needed as the lock is freed in the completion + */ + mutex_lock(&sec_req->lock); + done = list_empty(&sec_req->elements); + mutex_unlock(&sec_req->lock); + if (done) { + if (crypto_skcipher_ivsize(atfm)) { + dma_unmap_single(dev, sec_req->dma_iv, + crypto_skcipher_ivsize(atfm), + DMA_TO_DEVICE); + } + dma_unmap_sg(dev, skreq->src, sec_req->len_in, + DMA_BIDIRECTIONAL); + if (skreq->src != skreq->dst) + dma_unmap_sg(dev, skreq->dst, sec_req->len_out, + DMA_BIDIRECTIONAL); + skcipher_request_complete(skreq, sec_req->err); + } +} + +void sec_alg_callback(struct sec_bd_info *resp, void *shadow) +{ + struct sec_request *sec_req = shadow; + + sec_req->cb(resp, sec_req->req_base); +} + +static int sec_alg_alloc_and_calc_split_sizes(int length, size_t **split_sizes, + int *steps, gfp_t gfp) +{ + size_t *sizes; + int i; + + /* Split into suitable sized blocks */ + *steps = roundup(length, SEC_REQ_LIMIT) / SEC_REQ_LIMIT; + sizes = kzalloc_objs(*sizes, *steps, gfp); + if (!sizes) + return -ENOMEM; + + for (i = 0; i < *steps - 1; i++) + sizes[i] = SEC_REQ_LIMIT; + sizes[*steps - 1] = length - SEC_REQ_LIMIT * (*steps - 1); + *split_sizes = sizes; + + return 0; +} + +static int sec_map_and_split_sg(struct scatterlist *sgl, size_t *split_sizes, + int steps, struct scatterlist ***splits, + int **splits_nents, + int sgl_len_in, + struct device *dev, gfp_t gfp) +{ + int ret, count; + + count = dma_map_sg(dev, sgl, sgl_len_in, DMA_BIDIRECTIONAL); + if (!count) + return -EINVAL; + + *splits = kzalloc_objs(struct scatterlist *, steps, gfp); + if (!*splits) { + ret = -ENOMEM; + goto err_unmap_sg; + } + *splits_nents = kzalloc_objs(int, steps, gfp); + if (!*splits_nents) { + ret = -ENOMEM; + goto err_free_splits; + } + + /* output the scatter list before and after this */ + ret = sg_split(sgl, count, 0, steps, split_sizes, + *splits, *splits_nents, gfp); + if (ret) { + ret = -ENOMEM; + goto err_free_splits_nents; + } + + return 0; + +err_free_splits_nents: + kfree(*splits_nents); +err_free_splits: + kfree(*splits); +err_unmap_sg: + dma_unmap_sg(dev, sgl, sgl_len_in, DMA_BIDIRECTIONAL); + + return ret; +} + +/* + * Reverses the sec_map_and_split_sg call for messages not yet added to + * the queues. + */ +static void sec_unmap_sg_on_err(struct scatterlist *sgl, int steps, + struct scatterlist **splits, int *splits_nents, + int sgl_len_in, struct device *dev) +{ + int i; + + for (i = 0; i < steps; i++) + kfree(splits[i]); + kfree(splits_nents); + kfree(splits); + + dma_unmap_sg(dev, sgl, sgl_len_in, DMA_BIDIRECTIONAL); +} + +static struct sec_request_el +*sec_alg_alloc_and_fill_el(struct sec_bd_info *template, int encrypt, + int el_size, bool different_dest, + struct scatterlist *sgl_in, int n_ents_in, + struct scatterlist *sgl_out, int n_ents_out, + struct sec_dev_info *info, gfp_t gfp) +{ + struct sec_request_el *el; + struct sec_bd_info *req; + int ret; + + el = kzalloc_obj(*el, gfp); + if (!el) + return ERR_PTR(-ENOMEM); + el->el_length = el_size; + req = &el->req; + memcpy(req, template, sizeof(*req)); + + req->w0 &= ~SEC_BD_W0_CIPHER_M; + if (encrypt) + req->w0 |= SEC_CIPHER_ENCRYPT << SEC_BD_W0_CIPHER_S; + else + req->w0 |= SEC_CIPHER_DECRYPT << SEC_BD_W0_CIPHER_S; + + req->w0 &= ~SEC_BD_W0_C_GRAN_SIZE_19_16_M; + req->w0 |= ((el_size >> 16) << SEC_BD_W0_C_GRAN_SIZE_19_16_S) & + SEC_BD_W0_C_GRAN_SIZE_19_16_M; + + req->w0 &= ~SEC_BD_W0_C_GRAN_SIZE_21_20_M; + req->w0 |= ((el_size >> 20) << SEC_BD_W0_C_GRAN_SIZE_21_20_S) & + SEC_BD_W0_C_GRAN_SIZE_21_20_M; + + /* Writing whole u32 so no need to take care of masking */ + req->w2 = ((1 << SEC_BD_W2_GRAN_NUM_S) & SEC_BD_W2_GRAN_NUM_M) | + ((el_size << SEC_BD_W2_C_GRAN_SIZE_15_0_S) & + SEC_BD_W2_C_GRAN_SIZE_15_0_M); + + req->w3 &= ~SEC_BD_W3_CIPHER_LEN_OFFSET_M; + req->w1 |= SEC_BD_W1_ADDR_TYPE; + + el->sgl_in = sgl_in; + + ret = sec_alloc_and_fill_hw_sgl(&el->in, &el->dma_in, el->sgl_in, + n_ents_in, info, gfp); + if (ret) + goto err_free_el; + + req->data_addr_lo = lower_32_bits(el->dma_in); + req->data_addr_hi = upper_32_bits(el->dma_in); + + if (different_dest) { + el->sgl_out = sgl_out; + ret = sec_alloc_and_fill_hw_sgl(&el->out, &el->dma_out, + el->sgl_out, + n_ents_out, info, gfp); + if (ret) + goto err_free_hw_sgl_in; + + req->w0 |= SEC_BD_W0_DE; + req->cipher_destin_addr_lo = lower_32_bits(el->dma_out); + req->cipher_destin_addr_hi = upper_32_bits(el->dma_out); + + } else { + req->w0 &= ~SEC_BD_W0_DE; + req->cipher_destin_addr_lo = lower_32_bits(el->dma_in); + req->cipher_destin_addr_hi = upper_32_bits(el->dma_in); + } + + return el; + +err_free_hw_sgl_in: + sec_free_hw_sgl(el->in, el->dma_in, info); +err_free_el: + kfree(el); + + return ERR_PTR(ret); +} + +static int sec_alg_skcipher_crypto(struct skcipher_request *skreq, + bool encrypt) +{ + struct crypto_skcipher *atfm = crypto_skcipher_reqtfm(skreq); + struct crypto_tfm *tfm = crypto_skcipher_tfm(atfm); + struct sec_alg_tfm_ctx *ctx = crypto_tfm_ctx(tfm); + struct sec_queue *queue = ctx->queue; + struct sec_request *sec_req = skcipher_request_ctx(skreq); + struct sec_dev_info *info = queue->dev_info; + int i, ret, steps; + size_t *split_sizes; + struct scatterlist **splits_in; + struct scatterlist **splits_out = NULL; + int *splits_in_nents; + int *splits_out_nents = NULL; + struct sec_request_el *el, *temp; + bool split = skreq->src != skreq->dst; + gfp_t gfp = skreq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : GFP_ATOMIC; + + mutex_init(&sec_req->lock); + sec_req->req_base = &skreq->base; + sec_req->err = 0; + /* SGL mapping out here to allow us to break it up as necessary */ + sec_req->len_in = sg_nents(skreq->src); + + ret = sec_alg_alloc_and_calc_split_sizes(skreq->cryptlen, &split_sizes, + &steps, gfp); + if (ret) + return ret; + sec_req->num_elements = steps; + ret = sec_map_and_split_sg(skreq->src, split_sizes, steps, &splits_in, + &splits_in_nents, sec_req->len_in, + info->dev, gfp); + if (ret) + goto err_free_split_sizes; + + if (split) { + sec_req->len_out = sg_nents(skreq->dst); + ret = sec_map_and_split_sg(skreq->dst, split_sizes, steps, + &splits_out, &splits_out_nents, + sec_req->len_out, info->dev, gfp); + if (ret) + goto err_unmap_in_sg; + } + /* Shared info stored in seq_req - applies to all BDs */ + sec_req->tfm_ctx = ctx; + sec_req->cb = sec_skcipher_alg_callback; + INIT_LIST_HEAD(&sec_req->elements); + + /* + * Future optimization. + * In the chaining case we can't use a dma pool bounce buffer + * but in the case where we know there is no chaining we can + */ + if (crypto_skcipher_ivsize(atfm)) { + sec_req->dma_iv = dma_map_single(info->dev, skreq->iv, + crypto_skcipher_ivsize(atfm), + DMA_TO_DEVICE); + if (dma_mapping_error(info->dev, sec_req->dma_iv)) { + ret = -ENOMEM; + goto err_unmap_out_sg; + } + } + + /* Set them all up then queue - cleaner error handling. */ + for (i = 0; i < steps; i++) { + el = sec_alg_alloc_and_fill_el(&ctx->req_template, + encrypt ? 1 : 0, + split_sizes[i], + skreq->src != skreq->dst, + splits_in[i], splits_in_nents[i], + split ? splits_out[i] : NULL, + split ? splits_out_nents[i] : 0, + info, gfp); + if (IS_ERR(el)) { + ret = PTR_ERR(el); + goto err_free_elements; + } + el->req.cipher_iv_addr_lo = lower_32_bits(sec_req->dma_iv); + el->req.cipher_iv_addr_hi = upper_32_bits(sec_req->dma_iv); + el->sec_req = sec_req; + list_add_tail(&el->head, &sec_req->elements); + } + + /* + * Only attempt to queue if the whole lot can fit in the queue - + * we can't successfully cleanup after a partial queing so this + * must succeed or fail atomically. + * + * Big hammer test of both software and hardware queues - could be + * more refined but this is unlikely to happen so no need. + */ + + /* Grab a big lock for a long time to avoid concurrency issues */ + spin_lock_bh(&queue->queuelock); + + /* + * Can go on to queue if we have space in either: + * 1) The hardware queue and no software queue + * 2) The software queue + * AND there is nothing in the backlog. If there is backlog we + * have to only queue to the backlog queue and return busy. + */ + if ((!sec_queue_can_enqueue(queue, steps) && + (!queue->havesoftqueue || + kfifo_avail(&queue->softqueue) > steps)) || + !list_empty(&ctx->backlog)) { + ret = -EBUSY; + if ((skreq->base.flags & CRYPTO_TFM_REQ_MAY_BACKLOG)) { + list_add_tail(&sec_req->backlog_head, &ctx->backlog); + spin_unlock_bh(&queue->queuelock); + goto out; + } + + spin_unlock_bh(&queue->queuelock); + goto err_free_elements; + } + ret = sec_send_request(sec_req, queue); + spin_unlock_bh(&queue->queuelock); + if (ret) + goto err_free_elements; + + ret = -EINPROGRESS; +out: + /* Cleanup - all elements in pointer arrays have been copied */ + kfree(splits_in_nents); + kfree(splits_in); + kfree(splits_out_nents); + kfree(splits_out); + kfree(split_sizes); + return ret; + +err_free_elements: + list_for_each_entry_safe(el, temp, &sec_req->elements, head) { + list_del(&el->head); + sec_alg_free_el(el, info); + } + if (crypto_skcipher_ivsize(atfm)) + dma_unmap_single(info->dev, sec_req->dma_iv, + crypto_skcipher_ivsize(atfm), + DMA_TO_DEVICE); +err_unmap_out_sg: + if (split) + sec_unmap_sg_on_err(skreq->dst, steps, splits_out, + splits_out_nents, sec_req->len_out, + info->dev); +err_unmap_in_sg: + sec_unmap_sg_on_err(skreq->src, steps, splits_in, splits_in_nents, + sec_req->len_in, info->dev); +err_free_split_sizes: + kfree(split_sizes); + + return ret; +} + +static int sec_alg_skcipher_encrypt(struct skcipher_request *req) +{ + return sec_alg_skcipher_crypto(req, true); +} + +static int sec_alg_skcipher_decrypt(struct skcipher_request *req) +{ + return sec_alg_skcipher_crypto(req, false); +} + +static int sec_alg_skcipher_init(struct crypto_skcipher *tfm) +{ + struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm); + + mutex_init(&ctx->lock); + INIT_LIST_HEAD(&ctx->backlog); + crypto_skcipher_set_reqsize(tfm, sizeof(struct sec_request)); + + ctx->queue = sec_queue_alloc_start_safe(); + if (IS_ERR(ctx->queue)) + return PTR_ERR(ctx->queue); + + spin_lock_init(&ctx->queue->queuelock); + ctx->queue->havesoftqueue = false; + + return 0; +} + +static void sec_alg_skcipher_exit(struct crypto_skcipher *tfm) +{ + struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm); + struct device *dev = ctx->queue->dev_info->dev; + + if (ctx->key) { + memzero_explicit(ctx->key, SEC_MAX_CIPHER_KEY); + dma_free_coherent(dev, SEC_MAX_CIPHER_KEY, ctx->key, + ctx->pkey); + } + sec_queue_stop_release(ctx->queue); +} + +static int sec_alg_skcipher_init_with_queue(struct crypto_skcipher *tfm) +{ + struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm); + int ret; + + ret = sec_alg_skcipher_init(tfm); + if (ret) + return ret; + + INIT_KFIFO(ctx->queue->softqueue); + ret = kfifo_alloc(&ctx->queue->softqueue, 512, GFP_KERNEL); + if (ret) { + sec_alg_skcipher_exit(tfm); + return ret; + } + ctx->queue->havesoftqueue = true; + + return 0; +} + +static void sec_alg_skcipher_exit_with_queue(struct crypto_skcipher *tfm) +{ + struct sec_alg_tfm_ctx *ctx = crypto_skcipher_ctx(tfm); + + kfifo_free(&ctx->queue->softqueue); + sec_alg_skcipher_exit(tfm); +} + +static struct skcipher_alg sec_algs[] = { + { + .base = { + .cra_name = "ecb(aes)", + .cra_driver_name = "hisi_sec_aes_ecb", + .cra_priority = 4001, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx), + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + }, + .init = sec_alg_skcipher_init, + .exit = sec_alg_skcipher_exit, + .setkey = sec_alg_skcipher_setkey_aes_ecb, + .decrypt = sec_alg_skcipher_decrypt, + .encrypt = sec_alg_skcipher_encrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = 0, + }, { + .base = { + .cra_name = "cbc(aes)", + .cra_driver_name = "hisi_sec_aes_cbc", + .cra_priority = 4001, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx), + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + }, + .init = sec_alg_skcipher_init_with_queue, + .exit = sec_alg_skcipher_exit_with_queue, + .setkey = sec_alg_skcipher_setkey_aes_cbc, + .decrypt = sec_alg_skcipher_decrypt, + .encrypt = sec_alg_skcipher_encrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, { + .base = { + .cra_name = "ctr(aes)", + .cra_driver_name = "hisi_sec_aes_ctr", + .cra_priority = 4001, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx), + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + }, + .init = sec_alg_skcipher_init_with_queue, + .exit = sec_alg_skcipher_exit_with_queue, + .setkey = sec_alg_skcipher_setkey_aes_ctr, + .decrypt = sec_alg_skcipher_decrypt, + .encrypt = sec_alg_skcipher_encrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, { + .base = { + .cra_name = "xts(aes)", + .cra_driver_name = "hisi_sec_aes_xts", + .cra_priority = 4001, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx), + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + }, + .init = sec_alg_skcipher_init, + .exit = sec_alg_skcipher_exit, + .setkey = sec_alg_skcipher_setkey_aes_xts, + .decrypt = sec_alg_skcipher_decrypt, + .encrypt = sec_alg_skcipher_encrypt, + .min_keysize = 2 * AES_MIN_KEY_SIZE, + .max_keysize = 2 * AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, { + /* Unable to find any test vectors so untested */ + .base = { + .cra_name = "ecb(des)", + .cra_driver_name = "hisi_sec_des_ecb", + .cra_priority = 4001, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx), + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + }, + .init = sec_alg_skcipher_init, + .exit = sec_alg_skcipher_exit, + .setkey = sec_alg_skcipher_setkey_des_ecb, + .decrypt = sec_alg_skcipher_decrypt, + .encrypt = sec_alg_skcipher_encrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = 0, + }, { + .base = { + .cra_name = "cbc(des)", + .cra_driver_name = "hisi_sec_des_cbc", + .cra_priority = 4001, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx), + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + }, + .init = sec_alg_skcipher_init_with_queue, + .exit = sec_alg_skcipher_exit_with_queue, + .setkey = sec_alg_skcipher_setkey_des_cbc, + .decrypt = sec_alg_skcipher_decrypt, + .encrypt = sec_alg_skcipher_encrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = DES_BLOCK_SIZE, + }, { + .base = { + .cra_name = "cbc(des3_ede)", + .cra_driver_name = "hisi_sec_3des_cbc", + .cra_priority = 4001, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY, + .cra_blocksize = DES3_EDE_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx), + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + }, + .init = sec_alg_skcipher_init_with_queue, + .exit = sec_alg_skcipher_exit_with_queue, + .setkey = sec_alg_skcipher_setkey_3des_cbc, + .decrypt = sec_alg_skcipher_decrypt, + .encrypt = sec_alg_skcipher_encrypt, + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + .ivsize = DES3_EDE_BLOCK_SIZE, + }, { + .base = { + .cra_name = "ecb(des3_ede)", + .cra_driver_name = "hisi_sec_3des_ecb", + .cra_priority = 4001, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY, + .cra_blocksize = DES3_EDE_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sec_alg_tfm_ctx), + .cra_alignmask = 0, + .cra_module = THIS_MODULE, + }, + .init = sec_alg_skcipher_init, + .exit = sec_alg_skcipher_exit, + .setkey = sec_alg_skcipher_setkey_3des_ecb, + .decrypt = sec_alg_skcipher_decrypt, + .encrypt = sec_alg_skcipher_encrypt, + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + .ivsize = 0, + } +}; + +int sec_algs_register(void) +{ + int ret = 0; + + mutex_lock(&algs_lock); + if (++active_devs != 1) + goto unlock; + + ret = crypto_register_skciphers(sec_algs, ARRAY_SIZE(sec_algs)); + if (ret) + --active_devs; +unlock: + mutex_unlock(&algs_lock); + + return ret; +} + +void sec_algs_unregister(void) +{ + mutex_lock(&algs_lock); + if (--active_devs != 0) + goto unlock; + crypto_unregister_skciphers(sec_algs, ARRAY_SIZE(sec_algs)); + +unlock: + mutex_unlock(&algs_lock); +} diff --git a/drivers/crypto/hisilicon/sec/sec_drv.c b/drivers/crypto/hisilicon/sec/sec_drv.c new file mode 100644 index 000000000..129cb6faa --- /dev/null +++ b/drivers/crypto/hisilicon/sec/sec_drv.c @@ -0,0 +1,1320 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for the HiSilicon SEC units found on Hip06 Hip07 + * + * Copyright (c) 2016-2017 HiSilicon Limited. + */ +#include <linux/acpi.h> +#include <linux/atomic.h> +#include <linux/delay.h> +#include <linux/dma-direction.h> +#include <linux/dma-mapping.h> +#include <linux/dmapool.h> +#include <linux/io.h> +#include <linux/iommu.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/irqreturn.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include "sec_drv.h" + +#define SEC_QUEUE_AR_FROCE_ALLOC 0 +#define SEC_QUEUE_AR_FROCE_NOALLOC 1 +#define SEC_QUEUE_AR_FROCE_DIS 2 + +#define SEC_QUEUE_AW_FROCE_ALLOC 0 +#define SEC_QUEUE_AW_FROCE_NOALLOC 1 +#define SEC_QUEUE_AW_FROCE_DIS 2 + +/* SEC_ALGSUB registers */ +#define SEC_ALGSUB_CLK_EN_REG 0x03b8 +#define SEC_ALGSUB_CLK_DIS_REG 0x03bc +#define SEC_ALGSUB_CLK_ST_REG 0x535c +#define SEC_ALGSUB_RST_REQ_REG 0x0aa8 +#define SEC_ALGSUB_RST_DREQ_REG 0x0aac +#define SEC_ALGSUB_RST_ST_REG 0x5a54 +#define SEC_ALGSUB_RST_ST_IS_RST BIT(0) + +#define SEC_ALGSUB_BUILD_RST_REQ_REG 0x0ab8 +#define SEC_ALGSUB_BUILD_RST_DREQ_REG 0x0abc +#define SEC_ALGSUB_BUILD_RST_ST_REG 0x5a5c +#define SEC_ALGSUB_BUILD_RST_ST_IS_RST BIT(0) + +#define SEC_SAA_BASE 0x00001000UL + +/* SEC_SAA registers */ +#define SEC_SAA_CTRL_REG(x) ((x) * SEC_SAA_ADDR_SIZE) +#define SEC_SAA_CTRL_GET_QM_EN BIT(0) + +#define SEC_ST_INTMSK1_REG 0x0200 +#define SEC_ST_RINT1_REG 0x0400 +#define SEC_ST_INTSTS1_REG 0x0600 +#define SEC_BD_MNG_STAT_REG 0x0800 +#define SEC_PARSING_STAT_REG 0x0804 +#define SEC_LOAD_TIME_OUT_CNT_REG 0x0808 +#define SEC_CORE_WORK_TIME_OUT_CNT_REG 0x080c +#define SEC_BACK_TIME_OUT_CNT_REG 0x0810 +#define SEC_BD1_PARSING_RD_TIME_OUT_CNT_REG 0x0814 +#define SEC_BD1_PARSING_WR_TIME_OUT_CNT_REG 0x0818 +#define SEC_BD2_PARSING_RD_TIME_OUT_CNT_REG 0x081c +#define SEC_BD2_PARSING_WR_TIME_OUT_CNT_REG 0x0820 +#define SEC_SAA_ACC_REG 0x083c +#define SEC_BD_NUM_CNT_IN_SEC_REG 0x0858 +#define SEC_LOAD_WORK_TIME_CNT_REG 0x0860 +#define SEC_CORE_WORK_WORK_TIME_CNT_REG 0x0864 +#define SEC_BACK_WORK_TIME_CNT_REG 0x0868 +#define SEC_SAA_IDLE_TIME_CNT_REG 0x086c +#define SEC_SAA_CLK_CNT_REG 0x0870 + +/* SEC_COMMON registers */ +#define SEC_CLK_EN_REG 0x0000 +#define SEC_CTRL_REG 0x0004 + +#define SEC_COMMON_CNT_CLR_CE_REG 0x0008 +#define SEC_COMMON_CNT_CLR_CE_CLEAR BIT(0) +#define SEC_COMMON_CNT_CLR_CE_SNAP_EN BIT(1) + +#define SEC_SECURE_CTRL_REG 0x000c +#define SEC_AXI_CACHE_CFG_REG 0x0010 +#define SEC_AXI_QOS_CFG_REG 0x0014 +#define SEC_IPV4_MASK_TABLE_REG 0x0020 +#define SEC_IPV6_MASK_TABLE_X_REG(x) (0x0024 + (x) * 4) +#define SEC_FSM_MAX_CNT_REG 0x0064 + +#define SEC_CTRL2_REG 0x0068 +#define SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_M GENMASK(3, 0) +#define SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_S 0 +#define SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_M GENMASK(6, 4) +#define SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_S 4 +#define SEC_CTRL2_CLK_GATE_EN BIT(7) +#define SEC_CTRL2_ENDIAN_BD BIT(8) +#define SEC_CTRL2_ENDIAN_BD_TYPE BIT(9) + +#define SEC_CNT_PRECISION_CFG_REG 0x006c +#define SEC_DEBUG_BD_CFG_REG 0x0070 +#define SEC_DEBUG_BD_CFG_WB_NORMAL BIT(0) +#define SEC_DEBUG_BD_CFG_WB_EN BIT(1) + +#define SEC_Q_SIGHT_SEL 0x0074 +#define SEC_Q_SIGHT_HIS_CLR 0x0078 +#define SEC_Q_VMID_CFG_REG(q) (0x0100 + (q) * 4) +#define SEC_Q_WEIGHT_CFG_REG(q) (0x200 + (q) * 4) +#define SEC_STAT_CLR_REG 0x0a00 +#define SEC_SAA_IDLE_CNT_CLR_REG 0x0a04 +#define SEC_QM_CPL_Q_IDBUF_DFX_CFG_REG 0x0b00 +#define SEC_QM_CPL_Q_IDBUF_DFX_RESULT_REG 0x0b04 +#define SEC_QM_BD_DFX_CFG_REG 0x0b08 +#define SEC_QM_BD_DFX_RESULT_REG 0x0b0c +#define SEC_QM_BDID_DFX_RESULT_REG 0x0b10 +#define SEC_QM_BD_DFIFO_STATUS_REG 0x0b14 +#define SEC_QM_BD_DFX_CFG2_REG 0x0b1c +#define SEC_QM_BD_DFX_RESULT2_REG 0x0b20 +#define SEC_QM_BD_IDFIFO_STATUS_REG 0x0b18 +#define SEC_QM_BD_DFIFO_STATUS2_REG 0x0b28 +#define SEC_QM_BD_IDFIFO_STATUS2_REG 0x0b2c + +#define SEC_HASH_IPV4_MASK 0xfff00000 +#define SEC_MAX_SAA_NUM 0xa +#define SEC_SAA_ADDR_SIZE 0x1000 + +#define SEC_Q_INIT_REG 0x0 +#define SEC_Q_INIT_WO_STAT_CLEAR 0x2 +#define SEC_Q_INIT_AND_STAT_CLEAR 0x3 + +#define SEC_Q_CFG_REG 0x8 +#define SEC_Q_CFG_REORDER BIT(0) + +#define SEC_Q_PROC_NUM_CFG_REG 0x10 +#define SEC_QUEUE_ENB_REG 0x18 + +#define SEC_Q_DEPTH_CFG_REG 0x50 +#define SEC_Q_DEPTH_CFG_DEPTH_M GENMASK(11, 0) +#define SEC_Q_DEPTH_CFG_DEPTH_S 0 + +#define SEC_Q_BASE_HADDR_REG 0x54 +#define SEC_Q_BASE_LADDR_REG 0x58 +#define SEC_Q_WR_PTR_REG 0x5c +#define SEC_Q_OUTORDER_BASE_HADDR_REG 0x60 +#define SEC_Q_OUTORDER_BASE_LADDR_REG 0x64 +#define SEC_Q_OUTORDER_RD_PTR_REG 0x68 +#define SEC_Q_OT_TH_REG 0x6c + +#define SEC_Q_ARUSER_CFG_REG 0x70 +#define SEC_Q_ARUSER_CFG_FA BIT(0) +#define SEC_Q_ARUSER_CFG_FNA BIT(1) +#define SEC_Q_ARUSER_CFG_RINVLD BIT(2) +#define SEC_Q_ARUSER_CFG_PKG BIT(3) + +#define SEC_Q_AWUSER_CFG_REG 0x74 +#define SEC_Q_AWUSER_CFG_FA BIT(0) +#define SEC_Q_AWUSER_CFG_FNA BIT(1) +#define SEC_Q_AWUSER_CFG_PKG BIT(2) + +#define SEC_Q_ERR_BASE_HADDR_REG 0x7c +#define SEC_Q_ERR_BASE_LADDR_REG 0x80 +#define SEC_Q_CFG_VF_NUM_REG 0x84 +#define SEC_Q_SOFT_PROC_PTR_REG 0x88 +#define SEC_Q_FAIL_INT_MSK_REG 0x300 +#define SEC_Q_FLOW_INT_MKS_REG 0x304 +#define SEC_Q_FAIL_RINT_REG 0x400 +#define SEC_Q_FLOW_RINT_REG 0x404 +#define SEC_Q_FAIL_INT_STATUS_REG 0x500 +#define SEC_Q_FLOW_INT_STATUS_REG 0x504 +#define SEC_Q_STATUS_REG 0x600 +#define SEC_Q_RD_PTR_REG 0x604 +#define SEC_Q_PRO_PTR_REG 0x608 +#define SEC_Q_OUTORDER_WR_PTR_REG 0x60c +#define SEC_Q_OT_CNT_STATUS_REG 0x610 +#define SEC_Q_INORDER_BD_NUM_ST_REG 0x650 +#define SEC_Q_INORDER_GET_FLAG_ST_REG 0x654 +#define SEC_Q_INORDER_ADD_FLAG_ST_REG 0x658 +#define SEC_Q_INORDER_TASK_INT_NUM_LEFT_ST_REG 0x65c +#define SEC_Q_RD_DONE_PTR_REG 0x660 +#define SEC_Q_CPL_Q_BD_NUM_ST_REG 0x700 +#define SEC_Q_CPL_Q_PTR_ST_REG 0x704 +#define SEC_Q_CPL_Q_H_ADDR_ST_REG 0x708 +#define SEC_Q_CPL_Q_L_ADDR_ST_REG 0x70c +#define SEC_Q_CPL_TASK_INT_NUM_LEFT_ST_REG 0x710 +#define SEC_Q_WRR_ID_CHECK_REG 0x714 +#define SEC_Q_CPLQ_FULL_CHECK_REG 0x718 +#define SEC_Q_SUCCESS_BD_CNT_REG 0x800 +#define SEC_Q_FAIL_BD_CNT_REG 0x804 +#define SEC_Q_GET_BD_CNT_REG 0x808 +#define SEC_Q_IVLD_CNT_REG 0x80c +#define SEC_Q_BD_PROC_GET_CNT_REG 0x810 +#define SEC_Q_BD_PROC_DONE_CNT_REG 0x814 +#define SEC_Q_LAT_CLR_REG 0x850 +#define SEC_Q_PKT_LAT_MAX_REG 0x854 +#define SEC_Q_PKT_LAT_AVG_REG 0x858 +#define SEC_Q_PKT_LAT_MIN_REG 0x85c +#define SEC_Q_ID_CLR_CFG_REG 0x900 +#define SEC_Q_1ST_BD_ERR_ID_REG 0x904 +#define SEC_Q_1ST_AUTH_FAIL_ID_REG 0x908 +#define SEC_Q_1ST_RD_ERR_ID_REG 0x90c +#define SEC_Q_1ST_ECC2_ERR_ID_REG 0x910 +#define SEC_Q_1ST_IVLD_ID_REG 0x914 +#define SEC_Q_1ST_BD_WR_ERR_ID_REG 0x918 +#define SEC_Q_1ST_ERR_BD_WR_ERR_ID_REG 0x91c +#define SEC_Q_1ST_BD_MAC_WR_ERR_ID_REG 0x920 + +struct sec_debug_bd_info { +#define SEC_DEBUG_BD_INFO_SOFT_ERR_CHECK_M GENMASK(22, 0) + u32 soft_err_check; +#define SEC_DEBUG_BD_INFO_HARD_ERR_CHECK_M GENMASK(9, 0) + u32 hard_err_check; + u32 icv_mac1st_word; +#define SEC_DEBUG_BD_INFO_GET_ID_M GENMASK(19, 0) + u32 sec_get_id; + /* W4---W15 */ + u32 reserv_left[12]; +}; + +struct sec_out_bd_info { +#define SEC_OUT_BD_INFO_Q_ID_M GENMASK(11, 0) +#define SEC_OUT_BD_INFO_ECC_2BIT_ERR BIT(14) + u16 data; +}; + +#define SEC_MAX_DEVICES 8 +static struct sec_dev_info *sec_devices[SEC_MAX_DEVICES]; +static DEFINE_MUTEX(sec_id_lock); + +static int sec_queue_map_io(struct sec_queue *queue) +{ + struct device *dev = queue->dev_info->dev; + struct resource *res; + + res = platform_get_resource(to_platform_device(dev), + IORESOURCE_MEM, + 2 + queue->queue_id); + if (!res) { + dev_err(dev, "Failed to get queue %u memory resource\n", + queue->queue_id); + return -ENOMEM; + } + queue->regs = ioremap(res->start, resource_size(res)); + if (!queue->regs) + return -ENOMEM; + + return 0; +} + +static void sec_queue_unmap_io(struct sec_queue *queue) +{ + iounmap(queue->regs); +} + +static int sec_queue_ar_pkgattr(struct sec_queue *queue, u32 ar_pkg) +{ + void __iomem *addr = queue->regs + SEC_Q_ARUSER_CFG_REG; + u32 regval; + + regval = readl_relaxed(addr); + if (ar_pkg) + regval |= SEC_Q_ARUSER_CFG_PKG; + else + regval &= ~SEC_Q_ARUSER_CFG_PKG; + writel_relaxed(regval, addr); + + return 0; +} + +static int sec_queue_aw_pkgattr(struct sec_queue *queue, u32 aw_pkg) +{ + void __iomem *addr = queue->regs + SEC_Q_AWUSER_CFG_REG; + u32 regval; + + regval = readl_relaxed(addr); + regval |= SEC_Q_AWUSER_CFG_PKG; + writel_relaxed(regval, addr); + + return 0; +} + +static int sec_clk_en(struct sec_dev_info *info) +{ + void __iomem *base = info->regs[SEC_COMMON]; + u32 i = 0; + + writel_relaxed(0x7, base + SEC_ALGSUB_CLK_EN_REG); + do { + usleep_range(1000, 10000); + if ((readl_relaxed(base + SEC_ALGSUB_CLK_ST_REG) & 0x7) == 0x7) + return 0; + i++; + } while (i < 10); + dev_err(info->dev, "sec clock enable fail!\n"); + + return -EIO; +} + +static int sec_clk_dis(struct sec_dev_info *info) +{ + void __iomem *base = info->regs[SEC_COMMON]; + u32 i = 0; + + writel_relaxed(0x7, base + SEC_ALGSUB_CLK_DIS_REG); + do { + usleep_range(1000, 10000); + if ((readl_relaxed(base + SEC_ALGSUB_CLK_ST_REG) & 0x7) == 0) + return 0; + i++; + } while (i < 10); + dev_err(info->dev, "sec clock disable fail!\n"); + + return -EIO; +} + +static int sec_reset_whole_module(struct sec_dev_info *info) +{ + void __iomem *base = info->regs[SEC_COMMON]; + bool is_reset, b_is_reset; + u32 i = 0; + + writel_relaxed(1, base + SEC_ALGSUB_RST_REQ_REG); + writel_relaxed(1, base + SEC_ALGSUB_BUILD_RST_REQ_REG); + while (1) { + usleep_range(1000, 10000); + is_reset = readl_relaxed(base + SEC_ALGSUB_RST_ST_REG) & + SEC_ALGSUB_RST_ST_IS_RST; + b_is_reset = readl_relaxed(base + SEC_ALGSUB_BUILD_RST_ST_REG) & + SEC_ALGSUB_BUILD_RST_ST_IS_RST; + if (is_reset && b_is_reset) + break; + i++; + if (i > 10) { + dev_err(info->dev, "Reset req failed\n"); + return -EIO; + } + } + + i = 0; + writel_relaxed(1, base + SEC_ALGSUB_RST_DREQ_REG); + writel_relaxed(1, base + SEC_ALGSUB_BUILD_RST_DREQ_REG); + while (1) { + usleep_range(1000, 10000); + is_reset = readl_relaxed(base + SEC_ALGSUB_RST_ST_REG) & + SEC_ALGSUB_RST_ST_IS_RST; + b_is_reset = readl_relaxed(base + SEC_ALGSUB_BUILD_RST_ST_REG) & + SEC_ALGSUB_BUILD_RST_ST_IS_RST; + if (!is_reset && !b_is_reset) + break; + + i++; + if (i > 10) { + dev_err(info->dev, "Reset dreq failed\n"); + return -EIO; + } + } + + return 0; +} + +static void sec_bd_endian_little(struct sec_dev_info *info) +{ + void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL2_REG; + u32 regval; + + regval = readl_relaxed(addr); + regval &= ~(SEC_CTRL2_ENDIAN_BD | SEC_CTRL2_ENDIAN_BD_TYPE); + writel_relaxed(regval, addr); +} + +/* + * sec_cache_config - configure optimum cache placement + */ +static void sec_cache_config(struct sec_dev_info *info) +{ + struct iommu_domain *domain; + void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL_REG; + + domain = iommu_get_domain_for_dev(info->dev); + + /* Check that translation is occurring */ + if (domain && (domain->type & __IOMMU_DOMAIN_PAGING)) + writel_relaxed(0x44cf9e, addr); + else + writel_relaxed(0x4cfd9, addr); +} + +static void sec_data_axiwr_otsd_cfg(struct sec_dev_info *info, u32 cfg) +{ + void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL2_REG; + u32 regval; + + regval = readl_relaxed(addr); + regval &= ~SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_M; + regval |= (cfg << SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_S) & + SEC_CTRL2_DATA_AXI_WR_OTSD_CFG_M; + writel_relaxed(regval, addr); +} + +static void sec_data_axird_otsd_cfg(struct sec_dev_info *info, u32 cfg) +{ + void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL2_REG; + u32 regval; + + regval = readl_relaxed(addr); + regval &= ~SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_M; + regval |= (cfg << SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_S) & + SEC_CTRL2_DATA_AXI_RD_OTSD_CFG_M; + writel_relaxed(regval, addr); +} + +static void sec_clk_gate_en(struct sec_dev_info *info, bool clkgate) +{ + void __iomem *addr = info->regs[SEC_SAA] + SEC_CTRL2_REG; + u32 regval; + + regval = readl_relaxed(addr); + if (clkgate) + regval |= SEC_CTRL2_CLK_GATE_EN; + else + regval &= ~SEC_CTRL2_CLK_GATE_EN; + writel_relaxed(regval, addr); +} + +static void sec_comm_cnt_cfg(struct sec_dev_info *info, bool clr_ce) +{ + void __iomem *addr = info->regs[SEC_SAA] + SEC_COMMON_CNT_CLR_CE_REG; + u32 regval; + + regval = readl_relaxed(addr); + if (clr_ce) + regval |= SEC_COMMON_CNT_CLR_CE_CLEAR; + else + regval &= ~SEC_COMMON_CNT_CLR_CE_CLEAR; + writel_relaxed(regval, addr); +} + +static void sec_commsnap_en(struct sec_dev_info *info, bool snap_en) +{ + void __iomem *addr = info->regs[SEC_SAA] + SEC_COMMON_CNT_CLR_CE_REG; + u32 regval; + + regval = readl_relaxed(addr); + if (snap_en) + regval |= SEC_COMMON_CNT_CLR_CE_SNAP_EN; + else + regval &= ~SEC_COMMON_CNT_CLR_CE_SNAP_EN; + writel_relaxed(regval, addr); +} + +static void sec_ipv6_hashmask(struct sec_dev_info *info, u32 hash_mask[]) +{ + void __iomem *base = info->regs[SEC_SAA]; + int i; + + for (i = 0; i < 10; i++) + writel_relaxed(hash_mask[0], + base + SEC_IPV6_MASK_TABLE_X_REG(i)); +} + +static int sec_ipv4_hashmask(struct sec_dev_info *info, u32 hash_mask) +{ + if (hash_mask & SEC_HASH_IPV4_MASK) { + dev_err(info->dev, "Sec Ipv4 Hash Mask Input Error!\n"); + return -EINVAL; + } + + writel_relaxed(hash_mask, + info->regs[SEC_SAA] + SEC_IPV4_MASK_TABLE_REG); + + return 0; +} + +static void sec_set_dbg_bd_cfg(struct sec_dev_info *info, u32 cfg) +{ + void __iomem *addr = info->regs[SEC_SAA] + SEC_DEBUG_BD_CFG_REG; + u32 regval; + + regval = readl_relaxed(addr); + /* Always disable write back of normal bd */ + regval &= ~SEC_DEBUG_BD_CFG_WB_NORMAL; + + if (cfg) + regval &= ~SEC_DEBUG_BD_CFG_WB_EN; + else + regval |= SEC_DEBUG_BD_CFG_WB_EN; + + writel_relaxed(regval, addr); +} + +static void sec_saa_getqm_en(struct sec_dev_info *info, u32 saa_indx, u32 en) +{ + void __iomem *addr = info->regs[SEC_SAA] + SEC_SAA_BASE + + SEC_SAA_CTRL_REG(saa_indx); + u32 regval; + + regval = readl_relaxed(addr); + if (en) + regval |= SEC_SAA_CTRL_GET_QM_EN; + else + regval &= ~SEC_SAA_CTRL_GET_QM_EN; + writel_relaxed(regval, addr); +} + +static void sec_saa_int_mask(struct sec_dev_info *info, u32 saa_indx, + u32 saa_int_mask) +{ + writel_relaxed(saa_int_mask, + info->regs[SEC_SAA] + SEC_SAA_BASE + SEC_ST_INTMSK1_REG + + saa_indx * SEC_SAA_ADDR_SIZE); +} + +static void sec_streamid(struct sec_dev_info *info, int i) +{ + #define SEC_SID 0x600 + #define SEC_VMID 0 + + writel_relaxed((SEC_VMID | ((SEC_SID & 0xffff) << 8)), + info->regs[SEC_SAA] + SEC_Q_VMID_CFG_REG(i)); +} + +static void sec_queue_ar_alloc(struct sec_queue *queue, u32 alloc) +{ + void __iomem *addr = queue->regs + SEC_Q_ARUSER_CFG_REG; + u32 regval; + + regval = readl_relaxed(addr); + if (alloc == SEC_QUEUE_AR_FROCE_ALLOC) { + regval |= SEC_Q_ARUSER_CFG_FA; + regval &= ~SEC_Q_ARUSER_CFG_FNA; + } else { + regval &= ~SEC_Q_ARUSER_CFG_FA; + regval |= SEC_Q_ARUSER_CFG_FNA; + } + + writel_relaxed(regval, addr); +} + +static void sec_queue_aw_alloc(struct sec_queue *queue, u32 alloc) +{ + void __iomem *addr = queue->regs + SEC_Q_AWUSER_CFG_REG; + u32 regval; + + regval = readl_relaxed(addr); + if (alloc == SEC_QUEUE_AW_FROCE_ALLOC) { + regval |= SEC_Q_AWUSER_CFG_FA; + regval &= ~SEC_Q_AWUSER_CFG_FNA; + } else { + regval &= ~SEC_Q_AWUSER_CFG_FA; + regval |= SEC_Q_AWUSER_CFG_FNA; + } + + writel_relaxed(regval, addr); +} + +static void sec_queue_reorder(struct sec_queue *queue, bool reorder) +{ + void __iomem *base = queue->regs; + u32 regval; + + regval = readl_relaxed(base + SEC_Q_CFG_REG); + if (reorder) + regval |= SEC_Q_CFG_REORDER; + else + regval &= ~SEC_Q_CFG_REORDER; + writel_relaxed(regval, base + SEC_Q_CFG_REG); +} + +static void sec_queue_depth(struct sec_queue *queue, u32 depth) +{ + void __iomem *addr = queue->regs + SEC_Q_DEPTH_CFG_REG; + u32 regval; + + regval = readl_relaxed(addr); + regval &= ~SEC_Q_DEPTH_CFG_DEPTH_M; + regval |= (depth << SEC_Q_DEPTH_CFG_DEPTH_S) & SEC_Q_DEPTH_CFG_DEPTH_M; + + writel_relaxed(regval, addr); +} + +static void sec_queue_cmdbase_addr(struct sec_queue *queue, u64 addr) +{ + writel_relaxed(upper_32_bits(addr), queue->regs + SEC_Q_BASE_HADDR_REG); + writel_relaxed(lower_32_bits(addr), queue->regs + SEC_Q_BASE_LADDR_REG); +} + +static void sec_queue_outorder_addr(struct sec_queue *queue, u64 addr) +{ + writel_relaxed(upper_32_bits(addr), + queue->regs + SEC_Q_OUTORDER_BASE_HADDR_REG); + writel_relaxed(lower_32_bits(addr), + queue->regs + SEC_Q_OUTORDER_BASE_LADDR_REG); +} + +static void sec_queue_errbase_addr(struct sec_queue *queue, u64 addr) +{ + writel_relaxed(upper_32_bits(addr), + queue->regs + SEC_Q_ERR_BASE_HADDR_REG); + writel_relaxed(lower_32_bits(addr), + queue->regs + SEC_Q_ERR_BASE_LADDR_REG); +} + +static void sec_queue_irq_disable(struct sec_queue *queue) +{ + writel_relaxed((u32)~0, queue->regs + SEC_Q_FLOW_INT_MKS_REG); +} + +static void sec_queue_irq_enable(struct sec_queue *queue) +{ + writel_relaxed(0, queue->regs + SEC_Q_FLOW_INT_MKS_REG); +} + +static void sec_queue_abn_irq_disable(struct sec_queue *queue) +{ + writel_relaxed((u32)~0, queue->regs + SEC_Q_FAIL_INT_MSK_REG); +} + +static void sec_queue_stop(struct sec_queue *queue) +{ + disable_irq(queue->task_irq); + sec_queue_irq_disable(queue); + writel_relaxed(0x0, queue->regs + SEC_QUEUE_ENB_REG); +} + +static void sec_queue_start(struct sec_queue *queue) +{ + sec_queue_irq_enable(queue); + enable_irq(queue->task_irq); + queue->expected = 0; + writel_relaxed(SEC_Q_INIT_AND_STAT_CLEAR, queue->regs + SEC_Q_INIT_REG); + writel_relaxed(0x1, queue->regs + SEC_QUEUE_ENB_REG); +} + +static struct sec_queue *sec_alloc_queue(struct sec_dev_info *info) +{ + int i; + + mutex_lock(&info->dev_lock); + + /* Get the first idle queue in SEC device */ + for (i = 0; i < SEC_Q_NUM; i++) + if (!info->queues[i].in_use) { + info->queues[i].in_use = true; + info->queues_in_use++; + mutex_unlock(&info->dev_lock); + + return &info->queues[i]; + } + mutex_unlock(&info->dev_lock); + + return ERR_PTR(-ENODEV); +} + +static int sec_queue_free(struct sec_queue *queue) +{ + struct sec_dev_info *info = queue->dev_info; + + if (queue->queue_id >= SEC_Q_NUM) { + dev_err(info->dev, "No queue %u\n", queue->queue_id); + return -ENODEV; + } + + if (!queue->in_use) { + dev_err(info->dev, "Queue %u is idle\n", queue->queue_id); + return -ENODEV; + } + + mutex_lock(&info->dev_lock); + queue->in_use = false; + info->queues_in_use--; + mutex_unlock(&info->dev_lock); + + return 0; +} + +static irqreturn_t sec_isr_handle_th(int irq, void *q) +{ + sec_queue_irq_disable(q); + return IRQ_WAKE_THREAD; +} + +static irqreturn_t sec_isr_handle(int irq, void *q) +{ + struct sec_queue *queue = q; + struct sec_queue_ring_cmd *msg_ring = &queue->ring_cmd; + struct sec_queue_ring_cq *cq_ring = &queue->ring_cq; + struct sec_out_bd_info *outorder_msg; + struct sec_bd_info *msg; + u32 ooo_read, ooo_write; + void __iomem *base = queue->regs; + int q_id; + + ooo_read = readl(base + SEC_Q_OUTORDER_RD_PTR_REG); + ooo_write = readl(base + SEC_Q_OUTORDER_WR_PTR_REG); + outorder_msg = cq_ring->vaddr + ooo_read; + q_id = outorder_msg->data & SEC_OUT_BD_INFO_Q_ID_M; + msg = msg_ring->vaddr + q_id; + + while ((ooo_write != ooo_read) && msg->w0 & SEC_BD_W0_DONE) { + /* + * Must be before callback otherwise blocks adding other chained + * elements + */ + set_bit(q_id, queue->unprocessed); + if (q_id == queue->expected) + while (test_bit(queue->expected, queue->unprocessed)) { + clear_bit(queue->expected, queue->unprocessed); + msg = msg_ring->vaddr + queue->expected; + msg->w0 &= ~SEC_BD_W0_DONE; + msg_ring->callback(msg, + queue->shadow[queue->expected]); + queue->shadow[queue->expected] = NULL; + queue->expected = (queue->expected + 1) % + SEC_QUEUE_LEN; + atomic_dec(&msg_ring->used); + } + + ooo_read = (ooo_read + 1) % SEC_QUEUE_LEN; + writel(ooo_read, base + SEC_Q_OUTORDER_RD_PTR_REG); + ooo_write = readl(base + SEC_Q_OUTORDER_WR_PTR_REG); + outorder_msg = cq_ring->vaddr + ooo_read; + q_id = outorder_msg->data & SEC_OUT_BD_INFO_Q_ID_M; + msg = msg_ring->vaddr + q_id; + } + + sec_queue_irq_enable(queue); + + return IRQ_HANDLED; +} + +static int sec_queue_irq_init(struct sec_queue *queue) +{ + struct sec_dev_info *info = queue->dev_info; + int irq = queue->task_irq; + int ret; + + ret = request_threaded_irq(irq, sec_isr_handle_th, sec_isr_handle, + IRQF_TRIGGER_RISING, queue->name, queue); + if (ret) { + dev_err(info->dev, "request irq(%d) failed %d\n", irq, ret); + return ret; + } + disable_irq(irq); + + return 0; +} + +static int sec_queue_irq_uninit(struct sec_queue *queue) +{ + free_irq(queue->task_irq, queue); + + return 0; +} + +static struct sec_dev_info *sec_device_get(void) +{ + struct sec_dev_info *sec_dev = NULL; + struct sec_dev_info *this_sec_dev; + int least_busy_n = SEC_Q_NUM + 1; + int i; + + /* Find which one is least busy and use that first */ + for (i = 0; i < SEC_MAX_DEVICES; i++) { + this_sec_dev = sec_devices[i]; + if (this_sec_dev && + this_sec_dev->queues_in_use < least_busy_n) { + least_busy_n = this_sec_dev->queues_in_use; + sec_dev = this_sec_dev; + } + } + + return sec_dev; +} + +static struct sec_queue *sec_queue_alloc_start(struct sec_dev_info *info) +{ + struct sec_queue *queue; + + queue = sec_alloc_queue(info); + if (IS_ERR(queue)) { + dev_err(info->dev, "alloc sec queue failed! %ld\n", + PTR_ERR(queue)); + return queue; + } + + sec_queue_start(queue); + + return queue; +} + +/** + * sec_queue_alloc_start_safe - get a hw queue from appropriate instance + * + * This function does extremely simplistic load balancing. It does not take into + * account NUMA locality of the accelerator, or which cpu has requested the + * queue. Future work may focus on optimizing this in order to improve full + * machine throughput. + */ +struct sec_queue *sec_queue_alloc_start_safe(void) +{ + struct sec_dev_info *info; + struct sec_queue *queue = ERR_PTR(-ENODEV); + + mutex_lock(&sec_id_lock); + info = sec_device_get(); + if (!info) + goto unlock; + + queue = sec_queue_alloc_start(info); + +unlock: + mutex_unlock(&sec_id_lock); + + return queue; +} + +/** + * sec_queue_stop_release() - free up a hw queue for reuse + * @queue: The queue we are done with. + * + * This will stop the current queue, terminanting any transactions + * that are inflight an return it to the pool of available hw queuess + */ +int sec_queue_stop_release(struct sec_queue *queue) +{ + struct device *dev = queue->dev_info->dev; + int ret; + + sec_queue_stop(queue); + + ret = sec_queue_free(queue); + if (ret) + dev_err(dev, "Releasing queue failed %d\n", ret); + + return ret; +} + +/** + * sec_queue_empty() - Is this hardware queue currently empty. + * @queue: The queue to test + * + * We need to know if we have an empty queue for some of the chaining modes + * as if it is not empty we may need to hold the message in a software queue + * until the hw queue is drained. + */ +bool sec_queue_empty(struct sec_queue *queue) +{ + struct sec_queue_ring_cmd *msg_ring = &queue->ring_cmd; + + return !atomic_read(&msg_ring->used); +} + +/** + * sec_queue_send() - queue up a single operation in the hw queue + * @queue: The queue in which to put the message + * @msg: The message + * @ctx: Context to be put in the shadow array and passed back to cb on result. + * + * This function will return -EAGAIN if the queue is currently full. + */ +int sec_queue_send(struct sec_queue *queue, struct sec_bd_info *msg, void *ctx) +{ + struct sec_queue_ring_cmd *msg_ring = &queue->ring_cmd; + void __iomem *base = queue->regs; + u32 write, read; + + mutex_lock(&msg_ring->lock); + read = readl(base + SEC_Q_RD_PTR_REG); + write = readl(base + SEC_Q_WR_PTR_REG); + if (write == read && atomic_read(&msg_ring->used) == SEC_QUEUE_LEN) { + mutex_unlock(&msg_ring->lock); + return -EAGAIN; + } + memcpy(msg_ring->vaddr + write, msg, sizeof(*msg)); + queue->shadow[write] = ctx; + write = (write + 1) % SEC_QUEUE_LEN; + + /* Ensure content updated before queue advance */ + wmb(); + writel(write, base + SEC_Q_WR_PTR_REG); + + atomic_inc(&msg_ring->used); + mutex_unlock(&msg_ring->lock); + + return 0; +} + +bool sec_queue_can_enqueue(struct sec_queue *queue, int num) +{ + struct sec_queue_ring_cmd *msg_ring = &queue->ring_cmd; + + return SEC_QUEUE_LEN - atomic_read(&msg_ring->used) >= num; +} + +static void sec_queue_hw_init(struct sec_queue *queue) +{ + sec_queue_ar_alloc(queue, SEC_QUEUE_AR_FROCE_NOALLOC); + sec_queue_aw_alloc(queue, SEC_QUEUE_AW_FROCE_NOALLOC); + sec_queue_ar_pkgattr(queue, 1); + sec_queue_aw_pkgattr(queue, 1); + + /* Enable out of order queue */ + sec_queue_reorder(queue, true); + + /* Interrupt after a single complete element */ + writel_relaxed(1, queue->regs + SEC_Q_PROC_NUM_CFG_REG); + + sec_queue_depth(queue, SEC_QUEUE_LEN - 1); + + sec_queue_cmdbase_addr(queue, queue->ring_cmd.paddr); + + sec_queue_outorder_addr(queue, queue->ring_cq.paddr); + + sec_queue_errbase_addr(queue, queue->ring_db.paddr); + + writel_relaxed(0x100, queue->regs + SEC_Q_OT_TH_REG); + + sec_queue_abn_irq_disable(queue); + sec_queue_irq_disable(queue); + writel_relaxed(SEC_Q_INIT_AND_STAT_CLEAR, queue->regs + SEC_Q_INIT_REG); +} + +static int sec_hw_init(struct sec_dev_info *info) +{ + struct iommu_domain *domain; + u32 sec_ipv4_mask = 0; + u32 sec_ipv6_mask[10] = {}; + int ret; + u32 i; + + domain = iommu_get_domain_for_dev(info->dev); + + /* + * Enable all available processing unit clocks. + * Only the first cluster is usable with translations. + */ + if (domain && (domain->type & __IOMMU_DOMAIN_PAGING)) + info->num_saas = 5; + + else + info->num_saas = 10; + + writel_relaxed(GENMASK(info->num_saas - 1, 0), + info->regs[SEC_SAA] + SEC_CLK_EN_REG); + + /* 32 bit little endian */ + sec_bd_endian_little(info); + + sec_cache_config(info); + + /* Data axi port write and read outstanding config as per datasheet */ + sec_data_axiwr_otsd_cfg(info, 0x7); + sec_data_axird_otsd_cfg(info, 0x7); + + /* Enable clock gating */ + sec_clk_gate_en(info, true); + + /* Set CNT_CYC register not read clear */ + sec_comm_cnt_cfg(info, false); + + /* Enable CNT_CYC */ + sec_commsnap_en(info, false); + + writel_relaxed((u32)~0, info->regs[SEC_SAA] + SEC_FSM_MAX_CNT_REG); + + ret = sec_ipv4_hashmask(info, sec_ipv4_mask); + if (ret) { + dev_err(info->dev, "Failed to set ipv4 hashmask %d\n", ret); + return -EIO; + } + + sec_ipv6_hashmask(info, sec_ipv6_mask); + + /* do not use debug bd */ + sec_set_dbg_bd_cfg(info, 0); + + if (domain && (domain->type & __IOMMU_DOMAIN_PAGING)) { + for (i = 0; i < SEC_Q_NUM; i++) { + sec_streamid(info, i); + /* Same QoS for all queues */ + writel_relaxed(0x3f, + info->regs[SEC_SAA] + + SEC_Q_WEIGHT_CFG_REG(i)); + } + } + + for (i = 0; i < info->num_saas; i++) { + sec_saa_getqm_en(info, i, 1); + sec_saa_int_mask(info, i, 0); + } + + return 0; +} + +static void sec_hw_exit(struct sec_dev_info *info) +{ + int i; + + for (i = 0; i < SEC_MAX_SAA_NUM; i++) { + sec_saa_int_mask(info, i, (u32)~0); + sec_saa_getqm_en(info, i, 0); + } +} + +static void sec_queue_base_init(struct sec_dev_info *info, + struct sec_queue *queue, int queue_id) +{ + queue->dev_info = info; + queue->queue_id = queue_id; + snprintf(queue->name, sizeof(queue->name), + "%s_%d", dev_name(info->dev), queue->queue_id); +} + +static int sec_map_io(struct sec_dev_info *info, struct platform_device *pdev) +{ + struct resource *res; + int i; + + for (i = 0; i < SEC_NUM_ADDR_REGIONS; i++) { + res = platform_get_resource(pdev, IORESOURCE_MEM, i); + + if (!res) { + dev_err(info->dev, "Memory resource %d not found\n", i); + return -EINVAL; + } + + info->regs[i] = devm_ioremap(info->dev, res->start, + resource_size(res)); + if (!info->regs[i]) { + dev_err(info->dev, + "Memory resource %d could not be remapped\n", + i); + return -EINVAL; + } + } + + return 0; +} + +static int sec_base_init(struct sec_dev_info *info, + struct platform_device *pdev) +{ + int ret; + + ret = sec_map_io(info, pdev); + if (ret) + return ret; + + ret = sec_clk_en(info); + if (ret) + return ret; + + ret = sec_reset_whole_module(info); + if (ret) + goto sec_clk_disable; + + ret = sec_hw_init(info); + if (ret) + goto sec_clk_disable; + + return 0; + +sec_clk_disable: + sec_clk_dis(info); + + return ret; +} + +static void sec_base_exit(struct sec_dev_info *info) +{ + sec_hw_exit(info); + sec_clk_dis(info); +} + +#define SEC_Q_CMD_SIZE \ + round_up(SEC_QUEUE_LEN * sizeof(struct sec_bd_info), PAGE_SIZE) +#define SEC_Q_CQ_SIZE \ + round_up(SEC_QUEUE_LEN * sizeof(struct sec_out_bd_info), PAGE_SIZE) +#define SEC_Q_DB_SIZE \ + round_up(SEC_QUEUE_LEN * sizeof(struct sec_debug_bd_info), PAGE_SIZE) + +static int sec_queue_res_cfg(struct sec_queue *queue) +{ + struct device *dev = queue->dev_info->dev; + struct sec_queue_ring_cmd *ring_cmd = &queue->ring_cmd; + struct sec_queue_ring_cq *ring_cq = &queue->ring_cq; + struct sec_queue_ring_db *ring_db = &queue->ring_db; + int ret; + + ring_cmd->vaddr = dma_alloc_coherent(dev, SEC_Q_CMD_SIZE, + &ring_cmd->paddr, GFP_KERNEL); + if (!ring_cmd->vaddr) + return -ENOMEM; + + atomic_set(&ring_cmd->used, 0); + mutex_init(&ring_cmd->lock); + ring_cmd->callback = sec_alg_callback; + + ring_cq->vaddr = dma_alloc_coherent(dev, SEC_Q_CQ_SIZE, + &ring_cq->paddr, GFP_KERNEL); + if (!ring_cq->vaddr) { + ret = -ENOMEM; + goto err_free_ring_cmd; + } + + ring_db->vaddr = dma_alloc_coherent(dev, SEC_Q_DB_SIZE, + &ring_db->paddr, GFP_KERNEL); + if (!ring_db->vaddr) { + ret = -ENOMEM; + goto err_free_ring_cq; + } + queue->task_irq = platform_get_irq(to_platform_device(dev), + queue->queue_id * 2 + 1); + if (queue->task_irq < 0) { + ret = queue->task_irq; + goto err_free_ring_db; + } + + return 0; + +err_free_ring_db: + dma_free_coherent(dev, SEC_Q_DB_SIZE, queue->ring_db.vaddr, + queue->ring_db.paddr); +err_free_ring_cq: + dma_free_coherent(dev, SEC_Q_CQ_SIZE, queue->ring_cq.vaddr, + queue->ring_cq.paddr); +err_free_ring_cmd: + dma_free_coherent(dev, SEC_Q_CMD_SIZE, queue->ring_cmd.vaddr, + queue->ring_cmd.paddr); + + return ret; +} + +static void sec_queue_free_ring_pages(struct sec_queue *queue) +{ + struct device *dev = queue->dev_info->dev; + + dma_free_coherent(dev, SEC_Q_DB_SIZE, queue->ring_db.vaddr, + queue->ring_db.paddr); + dma_free_coherent(dev, SEC_Q_CQ_SIZE, queue->ring_cq.vaddr, + queue->ring_cq.paddr); + dma_free_coherent(dev, SEC_Q_CMD_SIZE, queue->ring_cmd.vaddr, + queue->ring_cmd.paddr); +} + +static int sec_queue_config(struct sec_dev_info *info, struct sec_queue *queue, + int queue_id) +{ + int ret; + + sec_queue_base_init(info, queue, queue_id); + + ret = sec_queue_res_cfg(queue); + if (ret) + return ret; + + ret = sec_queue_map_io(queue); + if (ret) { + dev_err(info->dev, "Queue map failed %d\n", ret); + sec_queue_free_ring_pages(queue); + return ret; + } + + sec_queue_hw_init(queue); + + return 0; +} + +static void sec_queue_unconfig(struct sec_dev_info *info, + struct sec_queue *queue) +{ + sec_queue_unmap_io(queue); + sec_queue_free_ring_pages(queue); +} + +static int sec_id_alloc(struct sec_dev_info *info) +{ + int ret = 0; + int i; + + mutex_lock(&sec_id_lock); + + for (i = 0; i < SEC_MAX_DEVICES; i++) + if (!sec_devices[i]) + break; + if (i == SEC_MAX_DEVICES) { + ret = -ENOMEM; + goto unlock; + } + info->sec_id = i; + sec_devices[info->sec_id] = info; + +unlock: + mutex_unlock(&sec_id_lock); + + return ret; +} + +static void sec_id_free(struct sec_dev_info *info) +{ + mutex_lock(&sec_id_lock); + sec_devices[info->sec_id] = NULL; + mutex_unlock(&sec_id_lock); +} + +static int sec_probe(struct platform_device *pdev) +{ + struct sec_dev_info *info; + struct device *dev = &pdev->dev; + int i, j; + int ret; + + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); + if (ret) { + dev_err(dev, "Failed to set 64 bit dma mask %d", ret); + return -ENODEV; + } + + info = devm_kzalloc(dev, (sizeof(*info)), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->dev = dev; + mutex_init(&info->dev_lock); + + info->hw_sgl_pool = dmam_pool_create("sgl", dev, + sizeof(struct sec_hw_sgl), 64, 0); + if (!info->hw_sgl_pool) { + dev_err(dev, "Failed to create sec sgl dma pool\n"); + return -ENOMEM; + } + + ret = sec_base_init(info, pdev); + if (ret) { + dev_err(dev, "Base initialization fail! %d\n", ret); + return ret; + } + + for (i = 0; i < SEC_Q_NUM; i++) { + ret = sec_queue_config(info, &info->queues[i], i); + if (ret) + goto queues_unconfig; + + ret = sec_queue_irq_init(&info->queues[i]); + if (ret) { + sec_queue_unconfig(info, &info->queues[i]); + goto queues_unconfig; + } + } + + ret = sec_algs_register(); + if (ret) { + dev_err(dev, "Failed to register algorithms with crypto %d\n", + ret); + goto queues_unconfig; + } + + platform_set_drvdata(pdev, info); + + ret = sec_id_alloc(info); + if (ret) + goto algs_unregister; + + return 0; + +algs_unregister: + sec_algs_unregister(); +queues_unconfig: + for (j = i - 1; j >= 0; j--) { + sec_queue_irq_uninit(&info->queues[j]); + sec_queue_unconfig(info, &info->queues[j]); + } + sec_base_exit(info); + + return ret; +} + +static void sec_remove(struct platform_device *pdev) +{ + struct sec_dev_info *info = platform_get_drvdata(pdev); + int i; + + /* Unexpose as soon as possible, reuse during remove is fine */ + sec_id_free(info); + + sec_algs_unregister(); + + for (i = 0; i < SEC_Q_NUM; i++) { + sec_queue_irq_uninit(&info->queues[i]); + sec_queue_unconfig(info, &info->queues[i]); + } + + sec_base_exit(info); +} + +static const __maybe_unused struct of_device_id sec_match[] = { + { .compatible = "hisilicon,hip06-sec" }, + { .compatible = "hisilicon,hip07-sec" }, + {} +}; +MODULE_DEVICE_TABLE(of, sec_match); + +static const __maybe_unused struct acpi_device_id sec_acpi_match[] = { + { "HISI02C1", 0 }, + { } +}; +MODULE_DEVICE_TABLE(acpi, sec_acpi_match); + +static struct platform_driver sec_driver = { + .probe = sec_probe, + .remove = sec_remove, + .driver = { + .name = "hisi_sec_platform_driver", + .of_match_table = sec_match, + .acpi_match_table = ACPI_PTR(sec_acpi_match), + }, +}; +module_platform_driver(sec_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("HiSilicon Security Accelerators"); +MODULE_AUTHOR("Zaibo Xu <xuzaibo@huawei.com"); +MODULE_AUTHOR("Jonathan Cameron <jonathan.cameron@huawei.com>"); diff --git a/drivers/crypto/hisilicon/sec/sec_drv.h b/drivers/crypto/hisilicon/sec/sec_drv.h new file mode 100644 index 000000000..e2a50bf22 --- /dev/null +++ b/drivers/crypto/hisilicon/sec/sec_drv.h @@ -0,0 +1,428 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2016-2017 HiSilicon Limited. */ + +#ifndef _SEC_DRV_H_ +#define _SEC_DRV_H_ + +#include <crypto/algapi.h> +#include <linux/kfifo.h> + +#define SEC_MAX_SGE_NUM 64 +#define SEC_HW_RING_NUM 3 + +#define SEC_CMD_RING 0 +#define SEC_OUTORDER_RING 1 +#define SEC_DBG_RING 2 + +/* A reasonable length to balance memory use against flexibility */ +#define SEC_QUEUE_LEN 512 + +#define SEC_MAX_SGE_NUM 64 + +struct sec_bd_info { +#define SEC_BD_W0_T_LEN_M GENMASK(4, 0) +#define SEC_BD_W0_T_LEN_S 0 + +#define SEC_BD_W0_C_WIDTH_M GENMASK(6, 5) +#define SEC_BD_W0_C_WIDTH_S 5 +#define SEC_C_WIDTH_AES_128BIT 0 +#define SEC_C_WIDTH_AES_8BIT 1 +#define SEC_C_WIDTH_AES_1BIT 2 +#define SEC_C_WIDTH_DES_64BIT 0 +#define SEC_C_WIDTH_DES_8BIT 1 +#define SEC_C_WIDTH_DES_1BIT 2 + +#define SEC_BD_W0_C_MODE_M GENMASK(9, 7) +#define SEC_BD_W0_C_MODE_S 7 +#define SEC_C_MODE_ECB 0 +#define SEC_C_MODE_CBC 1 +#define SEC_C_MODE_CTR 4 +#define SEC_C_MODE_CCM 5 +#define SEC_C_MODE_GCM 6 +#define SEC_C_MODE_XTS 7 + +#define SEC_BD_W0_SEQ BIT(10) +#define SEC_BD_W0_DE BIT(11) +#define SEC_BD_W0_DAT_SKIP_M GENMASK(13, 12) +#define SEC_BD_W0_DAT_SKIP_S 12 +#define SEC_BD_W0_C_GRAN_SIZE_19_16_M GENMASK(17, 14) +#define SEC_BD_W0_C_GRAN_SIZE_19_16_S 14 + +#define SEC_BD_W0_CIPHER_M GENMASK(19, 18) +#define SEC_BD_W0_CIPHER_S 18 +#define SEC_CIPHER_NULL 0 +#define SEC_CIPHER_ENCRYPT 1 +#define SEC_CIPHER_DECRYPT 2 + +#define SEC_BD_W0_AUTH_M GENMASK(21, 20) +#define SEC_BD_W0_AUTH_S 20 +#define SEC_AUTH_NULL 0 +#define SEC_AUTH_MAC 1 +#define SEC_AUTH_VERIF 2 + +#define SEC_BD_W0_AI_GEN BIT(22) +#define SEC_BD_W0_CI_GEN BIT(23) +#define SEC_BD_W0_NO_HPAD BIT(24) +#define SEC_BD_W0_HM_M GENMASK(26, 25) +#define SEC_BD_W0_HM_S 25 +#define SEC_BD_W0_ICV_OR_SKEY_EN_M GENMASK(28, 27) +#define SEC_BD_W0_ICV_OR_SKEY_EN_S 27 + +/* Multi purpose field - gran size bits for send, flag for recv */ +#define SEC_BD_W0_FLAG_M GENMASK(30, 29) +#define SEC_BD_W0_C_GRAN_SIZE_21_20_M GENMASK(30, 29) +#define SEC_BD_W0_FLAG_S 29 +#define SEC_BD_W0_C_GRAN_SIZE_21_20_S 29 + +#define SEC_BD_W0_DONE BIT(31) + u32 w0; + +#define SEC_BD_W1_AUTH_GRAN_SIZE_M GENMASK(21, 0) +#define SEC_BD_W1_AUTH_GRAN_SIZE_S 0 +#define SEC_BD_W1_M_KEY_EN BIT(22) +#define SEC_BD_W1_BD_INVALID BIT(23) +#define SEC_BD_W1_ADDR_TYPE BIT(24) + +#define SEC_BD_W1_A_ALG_M GENMASK(28, 25) +#define SEC_BD_W1_A_ALG_S 25 +#define SEC_A_ALG_SHA1 0 +#define SEC_A_ALG_SHA256 1 +#define SEC_A_ALG_MD5 2 +#define SEC_A_ALG_SHA224 3 +#define SEC_A_ALG_HMAC_SHA1 8 +#define SEC_A_ALG_HMAC_SHA224 10 +#define SEC_A_ALG_HMAC_SHA256 11 +#define SEC_A_ALG_HMAC_MD5 12 +#define SEC_A_ALG_AES_XCBC 13 +#define SEC_A_ALG_AES_CMAC 14 + +#define SEC_BD_W1_C_ALG_M GENMASK(31, 29) +#define SEC_BD_W1_C_ALG_S 29 +#define SEC_C_ALG_DES 0 +#define SEC_C_ALG_3DES 1 +#define SEC_C_ALG_AES 2 + + u32 w1; + +#define SEC_BD_W2_C_GRAN_SIZE_15_0_M GENMASK(15, 0) +#define SEC_BD_W2_C_GRAN_SIZE_15_0_S 0 +#define SEC_BD_W2_GRAN_NUM_M GENMASK(31, 16) +#define SEC_BD_W2_GRAN_NUM_S 16 + u32 w2; + +#define SEC_BD_W3_AUTH_LEN_OFFSET_M GENMASK(9, 0) +#define SEC_BD_W3_AUTH_LEN_OFFSET_S 0 +#define SEC_BD_W3_CIPHER_LEN_OFFSET_M GENMASK(19, 10) +#define SEC_BD_W3_CIPHER_LEN_OFFSET_S 10 +#define SEC_BD_W3_MAC_LEN_M GENMASK(24, 20) +#define SEC_BD_W3_MAC_LEN_S 20 +#define SEC_BD_W3_A_KEY_LEN_M GENMASK(29, 25) +#define SEC_BD_W3_A_KEY_LEN_S 25 +#define SEC_BD_W3_C_KEY_LEN_M GENMASK(31, 30) +#define SEC_BD_W3_C_KEY_LEN_S 30 +#define SEC_KEY_LEN_AES_128 0 +#define SEC_KEY_LEN_AES_192 1 +#define SEC_KEY_LEN_AES_256 2 +#define SEC_KEY_LEN_DES 1 +#define SEC_KEY_LEN_3DES_3_KEY 1 +#define SEC_KEY_LEN_3DES_2_KEY 3 + u32 w3; + + /* W4,5 */ + union { + u32 authkey_addr_lo; + u32 authiv_addr_lo; + }; + union { + u32 authkey_addr_hi; + u32 authiv_addr_hi; + }; + + /* W6,7 */ + u32 cipher_key_addr_lo; + u32 cipher_key_addr_hi; + + /* W8,9 */ + u32 cipher_iv_addr_lo; + u32 cipher_iv_addr_hi; + + /* W10,11 */ + u32 data_addr_lo; + u32 data_addr_hi; + + /* W12,13 */ + u32 mac_addr_lo; + u32 mac_addr_hi; + + /* W14,15 */ + u32 cipher_destin_addr_lo; + u32 cipher_destin_addr_hi; +}; + +enum sec_mem_region { + SEC_COMMON = 0, + SEC_SAA, + SEC_NUM_ADDR_REGIONS +}; + +#define SEC_NAME_SIZE 64 +#define SEC_Q_NUM 16 + + +/** + * struct sec_queue_ring_cmd - store information about a SEC HW cmd ring + * @used: Local counter used to cheaply establish if the ring is empty. + * @lock: Protect against simultaneous adjusting of the read and write pointers. + * @vaddr: Virtual address for the ram pages used for the ring. + * @paddr: Physical address of the dma mapped region of ram used for the ring. + * @callback: Callback function called on a ring element completing. + */ +struct sec_queue_ring_cmd { + atomic_t used; + struct mutex lock; + struct sec_bd_info *vaddr; + dma_addr_t paddr; + void (*callback)(struct sec_bd_info *resp, void *ctx); +}; + +struct sec_debug_bd_info; +struct sec_queue_ring_db { + struct sec_debug_bd_info *vaddr; + dma_addr_t paddr; +}; + +struct sec_out_bd_info; +struct sec_queue_ring_cq { + struct sec_out_bd_info *vaddr; + dma_addr_t paddr; +}; + +struct sec_dev_info; + +enum sec_cipher_alg { + SEC_C_DES_ECB_64, + SEC_C_DES_CBC_64, + + SEC_C_3DES_ECB_192_3KEY, + SEC_C_3DES_ECB_192_2KEY, + + SEC_C_3DES_CBC_192_3KEY, + SEC_C_3DES_CBC_192_2KEY, + + SEC_C_AES_ECB_128, + SEC_C_AES_ECB_192, + SEC_C_AES_ECB_256, + + SEC_C_AES_CBC_128, + SEC_C_AES_CBC_192, + SEC_C_AES_CBC_256, + + SEC_C_AES_CTR_128, + SEC_C_AES_CTR_192, + SEC_C_AES_CTR_256, + + SEC_C_AES_XTS_128, + SEC_C_AES_XTS_256, + + SEC_C_NULL, +}; + +/** + * struct sec_alg_tfm_ctx - hardware specific tranformation context + * @cipher_alg: Cipher algorithm enabled include encryption mode. + * @key: Key storage if required. + * @pkey: DMA address for the key storage. + * @req_template: Request template to save time on setup. + * @queue: The hardware queue associated with this tfm context. + * @lock: Protect key and pkey to ensure they are consistent + * @auth_buf: Current context buffer for auth operations. + * @backlog: The backlog queue used for cases where our buffers aren't + * large enough. + */ +struct sec_alg_tfm_ctx { + enum sec_cipher_alg cipher_alg; + u8 *key; + dma_addr_t pkey; + struct sec_bd_info req_template; + struct sec_queue *queue; + struct mutex lock; + u8 *auth_buf; + struct list_head backlog; +}; + +/** + * struct sec_request - data associate with a single crypto request + * @elements: List of subparts of this request (hardware size restriction) + * @num_elements: The number of subparts (used as an optimization) + * @lock: Protect elements of this structure against concurrent change. + * @tfm_ctx: hardware specific context. + * @len_in: length of in sgl from upper layers + * @len_out: length of out sgl from upper layers + * @dma_iv: initialization vector - phsyical address + * @err: store used to track errors across subelements of this request. + * @req_base: pointer to base element of associate crypto context. + * This is needed to allow shared handling skcipher, ahash etc. + * @cb: completion callback. + * @backlog_head: list head to allow backlog maintenance. + * + * The hardware is limited in the maximum size of data that it can + * process from a single BD. Typically this is fairly large (32MB) + * but still requires the complexity of splitting the incoming + * skreq up into a number of elements complete with appropriate + * iv chaining. + */ +struct sec_request { + struct list_head elements; + int num_elements; + struct mutex lock; + struct sec_alg_tfm_ctx *tfm_ctx; + int len_in; + int len_out; + dma_addr_t dma_iv; + int err; + struct crypto_async_request *req_base; + void (*cb)(struct sec_bd_info *resp, struct crypto_async_request *req); + struct list_head backlog_head; +}; + +/** + * struct sec_request_el - A subpart of a request. + * @head: allow us to attach this to the list in the sec_request + * @req: hardware block descriptor corresponding to this request subpart + * @in: hardware sgl for input - virtual address + * @dma_in: hardware sgl for input - physical address + * @sgl_in: scatterlist for this request subpart + * @out: hardware sgl for output - virtual address + * @dma_out: hardware sgl for output - physical address + * @sgl_out: scatterlist for this request subpart + * @sec_req: The request which this subpart forms a part of + * @el_length: Number of bytes in this subpart. Needed to locate + * last ivsize chunk for iv chaining. + */ +struct sec_request_el { + struct list_head head; + struct sec_bd_info req; + struct sec_hw_sgl *in; + dma_addr_t dma_in; + struct scatterlist *sgl_in; + struct sec_hw_sgl *out; + dma_addr_t dma_out; + struct scatterlist *sgl_out; + struct sec_request *sec_req; + size_t el_length; +}; + +/** + * struct sec_queue - All the information about a HW queue + * @dev_info: The parent SEC device to which this queue belongs. + * @task_irq: Completion interrupt for the queue. + * @name: Human readable queue description also used as irq name. + * @ring: The several HW rings associated with one queue. + * @regs: The iomapped device registers + * @queue_id: Index of the queue used for naming and resource selection. + * @in_use: Flag to say if the queue is in use. + * @expected: The next expected element to finish assuming we were in order. + * @uprocessed: A bitmap to track which OoO elements are done but not handled. + * @softqueue: A software queue used when chaining requirements prevent direct + * use of the hardware queues. + * @havesoftqueue: A flag to say we have a queues - as we may need one for the + * current mode. + * @queuelock: Protect the soft queue from concurrent changes to avoid some + * potential loss of data races. + * @shadow: Pointers back to the shadow copy of the hardware ring element + * need because we can't store any context reference in the bd element. + */ +struct sec_queue { + struct sec_dev_info *dev_info; + int task_irq; + char name[SEC_NAME_SIZE]; + struct sec_queue_ring_cmd ring_cmd; + struct sec_queue_ring_cq ring_cq; + struct sec_queue_ring_db ring_db; + void __iomem *regs; + u32 queue_id; + bool in_use; + int expected; + + DECLARE_BITMAP(unprocessed, SEC_QUEUE_LEN); + DECLARE_KFIFO_PTR(softqueue, typeof(struct sec_request_el *)); + bool havesoftqueue; + spinlock_t queuelock; + void *shadow[SEC_QUEUE_LEN]; +}; + +/** + * struct sec_hw_sge: Track each of the 64 element SEC HW SGL entries + * @buf: The IOV dma address for this entry. + * @len: Length of this IOV. + * @pad: Reserved space. + */ +struct sec_hw_sge { + dma_addr_t buf; + unsigned int len; + unsigned int pad; +}; + +/** + * struct sec_hw_sgl: One hardware SGL entry. + * @next_sgl: The next entry if we need to chain dma address. Null if last. + * @entry_sum_in_chain: The full count of SGEs - only matters for first SGL. + * @entry_sum_in_sgl: The number of SGEs in this SGL element. + * @flag: Unused in skciphers. + * @serial_num: Unsued in skciphers. + * @cpuid: Currently unused. + * @data_bytes_in_sgl: Count of bytes from all SGEs in this SGL. + * @next: Virtual address used to stash the next sgl - useful in completion. + * @reserved: A reserved field not currently used. + * @sge_entries: The (up to) 64 Scatter Gather Entries, representing IOVs. + * @node: Currently unused. + */ +struct sec_hw_sgl { + dma_addr_t next_sgl; + u16 entry_sum_in_chain; + u16 entry_sum_in_sgl; + u32 flag; + u64 serial_num; + u32 cpuid; + u32 data_bytes_in_sgl; + struct sec_hw_sgl *next; + u64 reserved; + struct sec_hw_sge sge_entries[SEC_MAX_SGE_NUM]; + u8 node[16]; +}; + +struct dma_pool; + +/** + * struct sec_dev_info: The full SEC unit comprising queues and processors. + * @sec_id: Index used to track which SEC this is when more than one is present. + * @num_saas: The number of backed processors enabled. + * @regs: iomapped register regions shared by whole SEC unit. + * @dev_lock: Protects concurrent queue allocation / freeing for the SEC. + * @queues: The 16 queues that this SEC instance provides. + * @dev: Device pointer. + * @hw_sgl_pool: DMA pool used to mimise mapping for the scatter gather lists. + */ +struct sec_dev_info { + int sec_id; + int num_saas; + void __iomem *regs[SEC_NUM_ADDR_REGIONS]; + struct mutex dev_lock; + int queues_in_use; + struct sec_queue queues[SEC_Q_NUM]; + struct device *dev; + struct dma_pool *hw_sgl_pool; +}; + +int sec_queue_send(struct sec_queue *queue, struct sec_bd_info *msg, void *ctx); +bool sec_queue_can_enqueue(struct sec_queue *queue, int num); +int sec_queue_stop_release(struct sec_queue *queue); +struct sec_queue *sec_queue_alloc_start_safe(void); +bool sec_queue_empty(struct sec_queue *queue); + +/* Algorithm specific elements from sec_algs.c */ +void sec_alg_callback(struct sec_bd_info *resp, void *ctx); +int sec_algs_register(void); +void sec_algs_unregister(void); + +#endif /* _SEC_DRV_H_ */ diff --git a/drivers/crypto/hisilicon/sec2/Makefile b/drivers/crypto/hisilicon/sec2/Makefile new file mode 100644 index 000000000..b4f6cf14b --- /dev/null +++ b/drivers/crypto/hisilicon/sec2/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_CRYPTO_DEV_HISI_SEC2) += hisi_sec2.o +hisi_sec2-objs = sec_main.o sec_crypto.o diff --git a/drivers/crypto/hisilicon/sec2/sec.h b/drivers/crypto/hisilicon/sec2/sec.h new file mode 100644 index 000000000..adf95795d --- /dev/null +++ b/drivers/crypto/hisilicon/sec2/sec.h @@ -0,0 +1,289 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2019 HiSilicon Limited. */ + +#ifndef __HISI_SEC_V2_H +#define __HISI_SEC_V2_H + +#include <linux/hisi_acc_qm.h> +#include "sec_crypto.h" + +#define SEC_PBUF_SZ 512 +#define SEC_MAX_MAC_LEN 64 +#define SEC_IV_SIZE 24 +#define SEC_SGE_NR_NUM 4 +#define SEC_SGL_ALIGN_SIZE 64 + +/* Algorithm resource per hardware SEC queue */ +struct sec_alg_res { + u8 *pbuf; + dma_addr_t pbuf_dma; + u8 *c_ivin; + dma_addr_t c_ivin_dma; + u8 *a_ivin; + dma_addr_t a_ivin_dma; + u8 *out_mac; + dma_addr_t out_mac_dma; + u16 depth; +}; + +struct sec_hw_sge { + dma_addr_t buf; + void *page_ctrl; + __le32 len; + __le32 pad; + __le32 pad0; + __le32 pad1; +}; + +struct sec_hw_sgl { + dma_addr_t next_dma; + __le16 entry_sum_in_chain; + __le16 entry_sum_in_sgl; + __le16 entry_length_in_sgl; + __le16 pad0; + __le64 pad1[5]; + struct sec_hw_sgl *next; + struct sec_hw_sge sge_entries[SEC_SGE_NR_NUM]; +} __aligned(SEC_SGL_ALIGN_SIZE); + +struct sec_src_dst_buf { + struct sec_hw_sgl in; + struct sec_hw_sgl out; +}; + +struct sec_request_buf { + union { + struct sec_src_dst_buf data_buf; + __u8 pbuf[SEC_PBUF_SZ]; + }; + dma_addr_t in_dma; + dma_addr_t out_dma; +}; + +/* Cipher request of SEC private */ +struct sec_cipher_req { + struct hisi_acc_hw_sgl *c_out; + dma_addr_t c_out_dma; + u8 *c_ivin; + dma_addr_t c_ivin_dma; + struct skcipher_request *sk_req; + u32 c_len; + bool encrypt; + __u8 c_ivin_buf[SEC_IV_SIZE]; +}; + +struct sec_aead_req { + u8 *out_mac; + dma_addr_t out_mac_dma; + u8 *a_ivin; + dma_addr_t a_ivin_dma; + struct aead_request *aead_req; + __u8 a_ivin_buf[SEC_IV_SIZE]; + __u8 out_mac_buf[SEC_MAX_MAC_LEN]; +}; + +/* SEC request of Crypto */ +struct sec_req { + union { + struct sec_sqe sec_sqe; + struct sec_sqe3 sec_sqe3; + }; + struct sec_ctx *ctx; + struct sec_qp_ctx *qp_ctx; + + /** + * Common parameter of the SEC request. + */ + struct hisi_acc_hw_sgl *in; + dma_addr_t in_dma; + struct sec_cipher_req c_req; + struct sec_aead_req aead_req; + struct crypto_async_request *base; + + int err_type; + int req_id; + u32 flag; + + bool use_pbuf; + + struct list_head list; + struct sec_request_buf buf; +}; + +/** + * struct sec_req_op - Operations for SEC request + * @buf_map: DMA map the SGL buffers of the request + * @buf_unmap: DMA unmap the SGL buffers of the request + * @bd_fill: Fill the SEC queue BD + * @bd_send: Send the SEC BD into the hardware queue + * @callback: Call back for the request + * @process: Main processing logic of Skcipher + */ +struct sec_req_op { + int (*buf_map)(struct sec_ctx *ctx, struct sec_req *req); + void (*buf_unmap)(struct sec_ctx *ctx, struct sec_req *req); + void (*do_transfer)(struct sec_ctx *ctx, struct sec_req *req); + int (*bd_fill)(struct sec_ctx *ctx, struct sec_req *req); + int (*bd_send)(struct sec_ctx *ctx, struct sec_req *req); + void (*callback)(struct sec_ctx *ctx, struct sec_req *req, int err); + int (*process)(struct sec_ctx *ctx, struct sec_req *req); +}; + +/* SEC auth context */ +struct sec_auth_ctx { + dma_addr_t a_key_dma; + u8 *a_key; + u8 a_key_len; + u8 a_alg; + struct crypto_shash *hash_tfm; + struct crypto_aead *fallback_aead_tfm; +}; + +/* SEC cipher context which cipher's relatives */ +struct sec_cipher_ctx { + u8 *c_key; + dma_addr_t c_key_dma; + sector_t iv_offset; + u32 c_gran_size; + u32 ivsize; + u8 c_mode; + u8 c_alg; + u8 c_key_len; + + /* add software support */ + bool fallback; + struct crypto_sync_skcipher *fbtfm; +}; + +/* SEC queue context which defines queue's relatives */ +struct sec_qp_ctx { + struct hisi_qp *qp; + struct sec_req **req_list; + struct idr req_idr; + struct sec_alg_res *res; + struct sec_ctx *ctx; + spinlock_t req_lock; + spinlock_t id_lock; + struct hisi_acc_sgl_pool *c_in_pool; + struct hisi_acc_sgl_pool *c_out_pool; + u16 send_head; +}; + +enum sec_alg_type { + SEC_SKCIPHER, + SEC_AEAD +}; + +/* SEC Crypto TFM context which defines queue and cipher .etc relatives */ +struct sec_ctx { + struct sec_qp_ctx *qp_ctx; + struct sec_dev *sec; + const struct sec_req_op *req_op; + struct hisi_qp **qps; + + /* Half queues for encipher, and half for decipher */ + u32 hlf_q_num; + + /* Current cyclic index to select a queue for encipher */ + atomic_t enc_qcyclic; + + /* Current cyclic index to select a queue for decipher */ + atomic_t dec_qcyclic; + + enum sec_alg_type alg_type; + bool pbuf_supported; + struct sec_cipher_ctx c_ctx; + struct sec_auth_ctx a_ctx; + u8 type_supported; + struct device *dev; +}; + + +enum sec_debug_file_index { + SEC_CLEAR_ENABLE, + SEC_DEBUG_FILE_NUM, +}; + +struct sec_debug_file { + enum sec_debug_file_index index; + spinlock_t lock; + struct hisi_qm *qm; +}; + +struct sec_dfx { + atomic64_t send_cnt; + atomic64_t recv_cnt; + atomic64_t send_busy_cnt; + atomic64_t recv_busy_cnt; + atomic64_t err_bd_cnt; + atomic64_t invalid_req_cnt; + atomic64_t done_flag_cnt; +}; + +struct sec_debug { + struct sec_dfx dfx; + struct sec_debug_file files[SEC_DEBUG_FILE_NUM]; +}; + +struct sec_dev { + struct hisi_qm qm; + struct sec_debug debug; + u32 ctx_q_num; + bool iommu_used; +}; + +enum sec_cap_type { + SEC_QM_NFE_MASK_CAP = 0x0, + SEC_QM_RESET_MASK_CAP, + SEC_QM_OOO_SHUTDOWN_MASK_CAP, + SEC_QM_CE_MASK_CAP, + SEC_NFE_MASK_CAP, + SEC_RESET_MASK_CAP, + SEC_OOO_SHUTDOWN_MASK_CAP, + SEC_CE_MASK_CAP, + SEC_CLUSTER_NUM_CAP, + SEC_CORE_TYPE_NUM_CAP, + SEC_CORE_NUM_CAP, + SEC_CORES_PER_CLUSTER_NUM_CAP, + SEC_CORE_ENABLE_BITMAP, + SEC_DRV_ALG_BITMAP_LOW, + SEC_DRV_ALG_BITMAP_HIGH, + SEC_DEV_ALG_BITMAP_LOW, + SEC_DEV_ALG_BITMAP_HIGH, + SEC_CORE1_ALG_BITMAP_LOW, + SEC_CORE1_ALG_BITMAP_HIGH, + SEC_CORE2_ALG_BITMAP_LOW, + SEC_CORE2_ALG_BITMAP_HIGH, + SEC_CORE3_ALG_BITMAP_LOW, + SEC_CORE3_ALG_BITMAP_HIGH, + SEC_CORE4_ALG_BITMAP_LOW, + SEC_CORE4_ALG_BITMAP_HIGH, +}; + +enum sec_cap_table_type { + QM_RAS_NFE_TYPE = 0x0, + QM_RAS_NFE_RESET, + QM_RAS_CE_TYPE, + SEC_RAS_NFE_TYPE, + SEC_RAS_NFE_RESET, + SEC_RAS_CE_TYPE, + SEC_CORE_INFO, + SEC_CORE_EN, + SEC_DRV_ALG_BITMAP_LOW_TB, + SEC_DRV_ALG_BITMAP_HIGH_TB, + SEC_ALG_BITMAP_LOW, + SEC_ALG_BITMAP_HIGH, + SEC_CORE1_BITMAP_LOW, + SEC_CORE1_BITMAP_HIGH, + SEC_CORE2_BITMAP_LOW, + SEC_CORE2_BITMAP_HIGH, + SEC_CORE3_BITMAP_LOW, + SEC_CORE3_BITMAP_HIGH, + SEC_CORE4_BITMAP_LOW, + SEC_CORE4_BITMAP_HIGH, +}; + +void sec_destroy_qps(struct hisi_qp **qps, int qp_num); +struct hisi_qp **sec_create_qps(void); +u64 sec_get_alg_bitmap(struct hisi_qm *qm, u32 high, u32 low); +#endif diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c new file mode 100644 index 000000000..77e0e03cb --- /dev/null +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c @@ -0,0 +1,2781 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 HiSilicon Limited. */ + +#include <crypto/aes.h> +#include <crypto/aead.h> +#include <crypto/algapi.h> +#include <crypto/authenc.h> +#include <crypto/des.h> +#include <crypto/hash.h> +#include <crypto/internal/aead.h> +#include <crypto/internal/des.h> +#include <crypto/sha1.h> +#include <crypto/sha2.h> +#include <crypto/skcipher.h> +#include <crypto/xts.h> +#include <linux/crypto.h> +#include <linux/dma-mapping.h> +#include <linux/idr.h> + +#include "sec.h" +#include "sec_crypto.h" + +#define SEC_PRIORITY 80 +#define SEC_XTS_MIN_KEY_SIZE (2 * AES_MIN_KEY_SIZE) +#define SEC_XTS_MID_KEY_SIZE (3 * AES_MIN_KEY_SIZE) +#define SEC_XTS_MAX_KEY_SIZE (2 * AES_MAX_KEY_SIZE) +#define SEC_DES3_2KEY_SIZE (2 * DES_KEY_SIZE) +#define SEC_DES3_3KEY_SIZE (3 * DES_KEY_SIZE) + +/* SEC sqe(bd) bit operational relative MACRO */ +#define SEC_DE_OFFSET 1 +#define SEC_CIPHER_OFFSET 4 +#define SEC_SCENE_OFFSET 3 +#define SEC_DST_SGL_OFFSET 2 +#define SEC_SRC_SGL_OFFSET 7 +#define SEC_CKEY_OFFSET 9 +#define SEC_CMODE_OFFSET 12 +#define SEC_AKEY_OFFSET 5 +#define SEC_AEAD_ALG_OFFSET 11 +#define SEC_AUTH_OFFSET 6 + +#define SEC_DE_OFFSET_V3 9 +#define SEC_SCENE_OFFSET_V3 5 +#define SEC_CKEY_OFFSET_V3 13 +#define SEC_CTR_CNT_OFFSET 25 +#define SEC_CTR_CNT_ROLLOVER 2 +#define SEC_SRC_SGL_OFFSET_V3 11 +#define SEC_DST_SGL_OFFSET_V3 14 +#define SEC_CALG_OFFSET_V3 4 +#define SEC_AKEY_OFFSET_V3 9 +#define SEC_MAC_OFFSET_V3 4 +#define SEC_AUTH_ALG_OFFSET_V3 15 +#define SEC_CIPHER_AUTH_V3 0xbf +#define SEC_AUTH_CIPHER_V3 0x40 +#define SEC_FLAG_OFFSET 7 +#define SEC_FLAG_MASK 0x0780 +#define SEC_DONE_MASK 0x0001 +#define SEC_ICV_MASK 0x000E + +#define SEC_TOTAL_IV_SZ(depth) (SEC_IV_SIZE * (depth)) +#define SEC_SGL_SGE_NR 128 +#define SEC_CIPHER_AUTH 0xfe +#define SEC_AUTH_CIPHER 0x1 +#define SEC_MAX_MAC_LEN 64 +#define SEC_MAX_AAD_LEN 65535 +#define SEC_MAX_CCM_AAD_LEN 65279 +#define SEC_TOTAL_MAC_SZ(depth) (SEC_MAX_MAC_LEN * (depth)) + +#define SEC_PBUF_IV_OFFSET SEC_PBUF_SZ +#define SEC_PBUF_MAC_OFFSET (SEC_PBUF_SZ + SEC_IV_SIZE) +#define SEC_PBUF_PKG (SEC_PBUF_SZ + SEC_IV_SIZE + \ + SEC_MAX_MAC_LEN * 2) +#define SEC_PBUF_NUM (PAGE_SIZE / SEC_PBUF_PKG) +#define SEC_PBUF_PAGE_NUM(depth) ((depth) / SEC_PBUF_NUM) +#define SEC_PBUF_LEFT_SZ(depth) (SEC_PBUF_PKG * ((depth) - \ + SEC_PBUF_PAGE_NUM(depth) * SEC_PBUF_NUM)) +#define SEC_TOTAL_PBUF_SZ(depth) (PAGE_SIZE * SEC_PBUF_PAGE_NUM(depth) + \ + SEC_PBUF_LEFT_SZ(depth)) + +#define SEC_SQE_CFLAG 2 +#define SEC_SQE_AEAD_FLAG 3 +#define SEC_SQE_DONE 0x1 +#define SEC_ICV_ERR 0x2 +#define MAC_LEN_MASK 0x1U +#define MAX_INPUT_DATA_LEN 0xFFFE00 +#define BITS_MASK 0xFF +#define WORD_MASK 0x3 +#define BYTE_BITS 0x8 +#define BYTES_TO_WORDS(bcount) ((bcount) >> 2) +#define SEC_XTS_NAME_SZ 0x3 +#define IV_CM_CAL_NUM 2 +#define IV_CL_MASK 0x7 +#define IV_CL_MIN 2 +#define IV_CL_MID 4 +#define IV_CL_MAX 8 +#define IV_FLAGS_OFFSET 0x6 +#define IV_CM_OFFSET 0x3 +#define IV_LAST_BYTE1 1 +#define IV_LAST_BYTE2 2 +#define IV_LAST_BYTE_MASK 0xFF +#define IV_CTR_INIT 0x1 +#define IV_BYTE_OFFSET 0x8 +#define SEC_GCM_MIN_AUTH_SZ 0x8 +#define SEC_RETRY_MAX_CNT 5U + +static DEFINE_MUTEX(sec_algs_lock); +static unsigned int sec_available_devs; + +struct sec_skcipher { + u64 alg_msk; + struct skcipher_alg alg; +}; + +struct sec_aead { + u64 alg_msk; + struct aead_alg alg; +}; + +static int sec_aead_soft_crypto(struct sec_ctx *ctx, + struct aead_request *aead_req, + bool encrypt); +static int sec_skcipher_soft_crypto(struct sec_ctx *ctx, + struct skcipher_request *sreq, bool encrypt); + +static int sec_alloc_req_id(struct sec_req *req, struct sec_qp_ctx *qp_ctx) +{ + int req_id; + + spin_lock_bh(&qp_ctx->id_lock); + req_id = idr_alloc_cyclic(&qp_ctx->req_idr, NULL, 0, qp_ctx->qp->sq_depth, GFP_ATOMIC); + spin_unlock_bh(&qp_ctx->id_lock); + return req_id; +} + +static void sec_free_req_id(struct sec_req *req) +{ + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + int req_id = req->req_id; + + if (unlikely(req_id < 0 || req_id >= qp_ctx->qp->sq_depth)) { + dev_err(req->ctx->dev, "free request id invalid!\n"); + return; + } + + spin_lock_bh(&qp_ctx->id_lock); + idr_remove(&qp_ctx->req_idr, req_id); + spin_unlock_bh(&qp_ctx->id_lock); +} + +static void pre_parse_finished_bd(struct bd_status *status, void *resp) +{ + struct sec_sqe *bd = resp; + + status->done = le16_to_cpu(bd->type2.done_flag) & SEC_DONE_MASK; + status->icv = (le16_to_cpu(bd->type2.done_flag) & SEC_ICV_MASK) >> 1; + status->flag = (le16_to_cpu(bd->type2.done_flag) & + SEC_FLAG_MASK) >> SEC_FLAG_OFFSET; + status->tag = le16_to_cpu(bd->type2.tag); + status->err_type = bd->type2.error_type; +} + +static void pre_parse_finished_bd3(struct bd_status *status, void *resp) +{ + struct sec_sqe3 *bd3 = resp; + + status->done = le16_to_cpu(bd3->done_flag) & SEC_DONE_MASK; + status->icv = (le16_to_cpu(bd3->done_flag) & SEC_ICV_MASK) >> 1; + status->flag = (le16_to_cpu(bd3->done_flag) & + SEC_FLAG_MASK) >> SEC_FLAG_OFFSET; + status->tag = le64_to_cpu(bd3->tag); + status->err_type = bd3->error_type; +} + +static int sec_cb_status_check(struct sec_req *req, + struct bd_status *status) +{ + struct sec_ctx *ctx = req->ctx; + + if (unlikely(req->err_type || status->done != SEC_SQE_DONE)) { + dev_err_ratelimited(ctx->dev, "err_type[%d], done[%u]\n", + req->err_type, status->done); + return -EIO; + } + + if (unlikely(ctx->alg_type == SEC_SKCIPHER)) { + if (unlikely(status->flag != SEC_SQE_CFLAG)) { + dev_err_ratelimited(ctx->dev, "flag[%u]\n", + status->flag); + return -EIO; + } + } else if (unlikely(ctx->alg_type == SEC_AEAD)) { + if (unlikely(status->flag != SEC_SQE_AEAD_FLAG || + status->icv == SEC_ICV_ERR)) { + dev_err_ratelimited(ctx->dev, + "flag[%u], icv[%u]\n", + status->flag, status->icv); + return -EBADMSG; + } + } + + return 0; +} + +static int qp_send_message(struct sec_req *req) +{ + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + int ret; + + if (atomic_read(&qp_ctx->qp->qp_status.used) == qp_ctx->qp->sq_depth - 1) + return -EBUSY; + + spin_lock_bh(&qp_ctx->req_lock); + if (atomic_read(&qp_ctx->qp->qp_status.used) == qp_ctx->qp->sq_depth - 1) { + spin_unlock_bh(&qp_ctx->req_lock); + return -EBUSY; + } + + if (qp_ctx->ctx->type_supported == SEC_BD_TYPE2) { + req->sec_sqe.type2.tag = cpu_to_le16((u16)qp_ctx->send_head); + qp_ctx->req_list[qp_ctx->send_head] = req; + } + + ret = hisi_qp_send(qp_ctx->qp, &req->sec_sqe); + if (ret) { + spin_unlock_bh(&qp_ctx->req_lock); + return ret; + } + if (qp_ctx->ctx->type_supported == SEC_BD_TYPE2) + qp_ctx->send_head = (qp_ctx->send_head + 1) % qp_ctx->qp->sq_depth; + + spin_unlock_bh(&qp_ctx->req_lock); + + atomic64_inc(&qp_ctx->ctx->sec->debug.dfx.send_cnt); + return -EINPROGRESS; +} + +static void sec_alg_send_backlog_soft(struct sec_ctx *ctx, struct sec_qp_ctx *qp_ctx) +{ + struct sec_req *req, *tmp; + int ret; + + list_for_each_entry_safe(req, tmp, &qp_ctx->qp->backlog.list, list) { + list_del(&req->list); + ctx->req_op->buf_unmap(ctx, req); + if (req->req_id >= 0) + sec_free_req_id(req); + + if (ctx->alg_type == SEC_AEAD) + ret = sec_aead_soft_crypto(ctx, req->aead_req.aead_req, + req->c_req.encrypt); + else + ret = sec_skcipher_soft_crypto(ctx, req->c_req.sk_req, + req->c_req.encrypt); + + /* Wake up the busy thread first, then return the errno. */ + crypto_request_complete(req->base, -EINPROGRESS); + crypto_request_complete(req->base, ret); + } +} + +static void sec_alg_send_backlog(struct sec_ctx *ctx, struct sec_qp_ctx *qp_ctx) +{ + struct hisi_qp *qp = qp_ctx->qp; + struct sec_req *req, *tmp; + int ret; + + spin_lock_bh(&qp->backlog.lock); + list_for_each_entry_safe(req, tmp, &qp->backlog.list, list) { + ret = qp_send_message(req); + switch (ret) { + case -EINPROGRESS: + list_del(&req->list); + crypto_request_complete(req->base, -EINPROGRESS); + break; + case -EBUSY: + /* Device is busy and stop send any request. */ + goto unlock; + default: + /* Release memory resources and send all requests through software. */ + sec_alg_send_backlog_soft(ctx, qp_ctx); + goto unlock; + } + } + +unlock: + spin_unlock_bh(&qp->backlog.lock); +} + +static void sec_req_cb(struct hisi_qp *qp, void *resp) +{ + const struct sec_sqe *sqe = qp->msg[qp->qp_status.cq_head]; + struct sec_req *req = container_of(sqe, struct sec_req, sec_sqe); + struct sec_ctx *ctx = req->ctx; + struct sec_dfx *dfx = &ctx->sec->debug.dfx; + struct bd_status status; + int err; + + pre_parse_finished_bd(&status, resp); + + req->err_type = status.err_type; + err = sec_cb_status_check(req, &status); + if (err) + atomic64_inc(&dfx->done_flag_cnt); + + atomic64_inc(&dfx->recv_cnt); + + ctx->req_op->buf_unmap(ctx, req); + ctx->req_op->callback(ctx, req, err); +} + +static void sec_req_cb3(struct hisi_qp *qp, void *resp) +{ + struct bd_status status; + struct sec_ctx *ctx; + struct sec_dfx *dfx; + struct sec_req *req; + int err; + + pre_parse_finished_bd3(&status, resp); + + req = (void *)(uintptr_t)status.tag; + req->err_type = status.err_type; + ctx = req->ctx; + dfx = &ctx->sec->debug.dfx; + + err = sec_cb_status_check(req, &status); + if (err) + atomic64_inc(&dfx->done_flag_cnt); + + atomic64_inc(&dfx->recv_cnt); + + ctx->req_op->buf_unmap(ctx, req); + ctx->req_op->callback(ctx, req, err); +} + +static int sec_alg_send_message_retry(struct sec_req *req) +{ + int ctr = 0; + int ret; + + do { + ret = qp_send_message(req); + } while (ret == -EBUSY && ctr++ < SEC_RETRY_MAX_CNT); + + return ret; +} + +static int sec_alg_try_enqueue(struct sec_req *req) +{ + struct hisi_qp *qp = req->qp_ctx->qp; + + /* Check if any request is already backlogged */ + if (!list_empty(&qp->backlog.list)) + return -EBUSY; + + /* Try to enqueue to HW ring */ + return qp_send_message(req); +} + + +static int sec_alg_send_message_maybacklog(struct sec_req *req) +{ + struct hisi_qp *qp = req->qp_ctx->qp; + int ret; + + ret = sec_alg_try_enqueue(req); + if (ret != -EBUSY) + return ret; + + spin_lock_bh(&qp->backlog.lock); + ret = sec_alg_try_enqueue(req); + if (ret == -EBUSY) + list_add_tail(&req->list, &qp->backlog.list); + spin_unlock_bh(&qp->backlog.lock); + + return ret; +} + +static int sec_bd_send(struct sec_ctx *ctx, struct sec_req *req) +{ + if (req->flag & CRYPTO_TFM_REQ_MAY_BACKLOG) + return sec_alg_send_message_maybacklog(req); + + return sec_alg_send_message_retry(req); +} + +static int sec_alloc_civ_resource(struct device *dev, struct sec_alg_res *res) +{ + u16 q_depth = res->depth; + int i; + + res->c_ivin = dma_alloc_coherent(dev, SEC_TOTAL_IV_SZ(q_depth), + &res->c_ivin_dma, GFP_KERNEL); + if (!res->c_ivin) + return -ENOMEM; + + for (i = 1; i < q_depth; i++) { + res[i].c_ivin_dma = res->c_ivin_dma + i * SEC_IV_SIZE; + res[i].c_ivin = res->c_ivin + i * SEC_IV_SIZE; + } + + return 0; +} + +static void sec_free_civ_resource(struct device *dev, struct sec_alg_res *res) +{ + if (res->c_ivin) + dma_free_coherent(dev, SEC_TOTAL_IV_SZ(res->depth), + res->c_ivin, res->c_ivin_dma); +} + +static int sec_alloc_aiv_resource(struct device *dev, struct sec_alg_res *res) +{ + u16 q_depth = res->depth; + int i; + + res->a_ivin = dma_alloc_coherent(dev, SEC_TOTAL_IV_SZ(q_depth), + &res->a_ivin_dma, GFP_KERNEL); + if (!res->a_ivin) + return -ENOMEM; + + for (i = 1; i < q_depth; i++) { + res[i].a_ivin_dma = res->a_ivin_dma + i * SEC_IV_SIZE; + res[i].a_ivin = res->a_ivin + i * SEC_IV_SIZE; + } + + return 0; +} + +static void sec_free_aiv_resource(struct device *dev, struct sec_alg_res *res) +{ + if (res->a_ivin) + dma_free_coherent(dev, SEC_TOTAL_IV_SZ(res->depth), + res->a_ivin, res->a_ivin_dma); +} + +static int sec_alloc_mac_resource(struct device *dev, struct sec_alg_res *res) +{ + u16 q_depth = res->depth; + int i; + + res->out_mac = dma_alloc_coherent(dev, SEC_TOTAL_MAC_SZ(q_depth) << 1, + &res->out_mac_dma, GFP_KERNEL); + if (!res->out_mac) + return -ENOMEM; + + for (i = 1; i < q_depth; i++) { + res[i].out_mac_dma = res->out_mac_dma + + i * (SEC_MAX_MAC_LEN << 1); + res[i].out_mac = res->out_mac + i * (SEC_MAX_MAC_LEN << 1); + } + + return 0; +} + +static void sec_free_mac_resource(struct device *dev, struct sec_alg_res *res) +{ + if (res->out_mac) + dma_free_coherent(dev, SEC_TOTAL_MAC_SZ(res->depth) << 1, + res->out_mac, res->out_mac_dma); +} + +static void sec_free_pbuf_resource(struct device *dev, struct sec_alg_res *res) +{ + if (res->pbuf) + dma_free_coherent(dev, SEC_TOTAL_PBUF_SZ(res->depth), + res->pbuf, res->pbuf_dma); +} + +/* + * To improve performance, pbuffer is used for + * small packets (< 512Bytes) as IOMMU translation using. + */ +static int sec_alloc_pbuf_resource(struct device *dev, struct sec_alg_res *res) +{ + u16 q_depth = res->depth; + int size = SEC_PBUF_PAGE_NUM(q_depth); + int pbuf_page_offset; + int i, j, k; + + res->pbuf = dma_alloc_coherent(dev, SEC_TOTAL_PBUF_SZ(q_depth), + &res->pbuf_dma, GFP_KERNEL); + if (!res->pbuf) + return -ENOMEM; + + /* + * SEC_PBUF_PKG contains data pbuf, iv and + * out_mac : <SEC_PBUF|SEC_IV|SEC_MAC> + * Every PAGE contains six SEC_PBUF_PKG + * The sec_qp_ctx contains QM_Q_DEPTH numbers of SEC_PBUF_PKG + * So we need SEC_PBUF_PAGE_NUM numbers of PAGE + * for the SEC_TOTAL_PBUF_SZ + */ + for (i = 0; i <= size; i++) { + pbuf_page_offset = PAGE_SIZE * i; + for (j = 0; j < SEC_PBUF_NUM; j++) { + k = i * SEC_PBUF_NUM + j; + if (k == q_depth) + break; + res[k].pbuf = res->pbuf + + j * SEC_PBUF_PKG + pbuf_page_offset; + res[k].pbuf_dma = res->pbuf_dma + + j * SEC_PBUF_PKG + pbuf_page_offset; + } + } + + return 0; +} + +static int sec_alg_resource_alloc(struct sec_ctx *ctx, + struct sec_qp_ctx *qp_ctx) +{ + struct sec_alg_res *res = qp_ctx->res; + struct device *dev = ctx->dev; + int ret; + + ret = sec_alloc_civ_resource(dev, res); + if (ret) + return ret; + + if (ctx->alg_type == SEC_AEAD) { + ret = sec_alloc_aiv_resource(dev, res); + if (ret) + goto alloc_aiv_fail; + + ret = sec_alloc_mac_resource(dev, res); + if (ret) + goto alloc_mac_fail; + } + if (ctx->pbuf_supported) { + ret = sec_alloc_pbuf_resource(dev, res); + if (ret) { + dev_err(dev, "fail to alloc pbuf dma resource!\n"); + goto alloc_pbuf_fail; + } + } + + return 0; + +alloc_pbuf_fail: + if (ctx->alg_type == SEC_AEAD) + sec_free_mac_resource(dev, qp_ctx->res); +alloc_mac_fail: + if (ctx->alg_type == SEC_AEAD) + sec_free_aiv_resource(dev, res); +alloc_aiv_fail: + sec_free_civ_resource(dev, res); + return ret; +} + +static void sec_alg_resource_free(struct sec_ctx *ctx, + struct sec_qp_ctx *qp_ctx) +{ + struct device *dev = ctx->dev; + + sec_free_civ_resource(dev, qp_ctx->res); + + if (ctx->pbuf_supported) + sec_free_pbuf_resource(dev, qp_ctx->res); + if (ctx->alg_type == SEC_AEAD) { + sec_free_mac_resource(dev, qp_ctx->res); + sec_free_aiv_resource(dev, qp_ctx->res); + } +} + +static int sec_alloc_qp_ctx_resource(struct sec_ctx *ctx, struct sec_qp_ctx *qp_ctx) +{ + u16 q_depth = qp_ctx->qp->sq_depth; + struct device *dev = ctx->dev; + int ret = -ENOMEM; + + qp_ctx->req_list = kzalloc_objs(struct sec_req *, q_depth); + if (!qp_ctx->req_list) + return ret; + + qp_ctx->res = kzalloc_objs(struct sec_alg_res, q_depth); + if (!qp_ctx->res) + goto err_free_req_list; + qp_ctx->res->depth = q_depth; + + qp_ctx->c_in_pool = hisi_acc_create_sgl_pool(dev, q_depth, SEC_SGL_SGE_NR); + if (IS_ERR(qp_ctx->c_in_pool)) { + dev_err(dev, "fail to create sgl pool for input!\n"); + goto err_free_res; + } + + qp_ctx->c_out_pool = hisi_acc_create_sgl_pool(dev, q_depth, SEC_SGL_SGE_NR); + if (IS_ERR(qp_ctx->c_out_pool)) { + dev_err(dev, "fail to create sgl pool for output!\n"); + goto err_free_c_in_pool; + } + + ret = sec_alg_resource_alloc(ctx, qp_ctx); + if (ret) + goto err_free_c_out_pool; + + return 0; + +err_free_c_out_pool: + hisi_acc_free_sgl_pool(dev, qp_ctx->c_out_pool); +err_free_c_in_pool: + hisi_acc_free_sgl_pool(dev, qp_ctx->c_in_pool); +err_free_res: + kfree(qp_ctx->res); +err_free_req_list: + kfree(qp_ctx->req_list); + return ret; +} + +static void sec_free_qp_ctx_resource(struct sec_ctx *ctx, struct sec_qp_ctx *qp_ctx) +{ + struct device *dev = ctx->dev; + + sec_alg_resource_free(ctx, qp_ctx); + hisi_acc_free_sgl_pool(dev, qp_ctx->c_out_pool); + hisi_acc_free_sgl_pool(dev, qp_ctx->c_in_pool); + kfree(qp_ctx->res); + kfree(qp_ctx->req_list); +} + +static int sec_create_qp_ctx(struct sec_ctx *ctx, int qp_ctx_id) +{ + struct sec_qp_ctx *qp_ctx; + struct hisi_qp *qp; + int ret; + + qp_ctx = &ctx->qp_ctx[qp_ctx_id]; + qp = ctx->qps[qp_ctx_id]; + qp_ctx->qp = qp; + qp_ctx->ctx = ctx; + + if (ctx->type_supported == SEC_BD_TYPE3) + qp->req_cb = sec_req_cb3; + else + qp->req_cb = sec_req_cb; + + spin_lock_init(&qp_ctx->req_lock); + idr_init(&qp_ctx->req_idr); + spin_lock_init(&qp_ctx->id_lock); + qp_ctx->send_head = 0; + + ret = sec_alloc_qp_ctx_resource(ctx, qp_ctx); + if (ret) + goto err_destroy_idr; + + return 0; + +err_destroy_idr: + idr_destroy(&qp_ctx->req_idr); + return ret; +} + +static void sec_release_qp_ctx(struct sec_ctx *ctx, + struct sec_qp_ctx *qp_ctx) +{ + sec_free_qp_ctx_resource(ctx, qp_ctx); + idr_destroy(&qp_ctx->req_idr); +} + +static int sec_ctx_base_init(struct sec_ctx *ctx) +{ + struct sec_dev *sec; + int i, ret; + + ctx->qps = sec_create_qps(); + if (!ctx->qps) + return -ENODEV; + + sec = container_of(ctx->qps[0]->qm, struct sec_dev, qm); + ctx->sec = sec; + ctx->dev = &sec->qm.pdev->dev; + ctx->hlf_q_num = sec->ctx_q_num >> 1; + + ctx->pbuf_supported = ctx->sec->iommu_used; + ctx->qp_ctx = kzalloc_objs(struct sec_qp_ctx, sec->ctx_q_num); + if (!ctx->qp_ctx) { + ret = -ENOMEM; + goto err_destroy_qps; + } + + for (i = 0; i < sec->ctx_q_num; i++) { + ret = sec_create_qp_ctx(ctx, i); + if (ret) + goto err_sec_release_qp_ctx; + } + + return 0; + +err_sec_release_qp_ctx: + for (i = i - 1; i >= 0; i--) + sec_release_qp_ctx(ctx, &ctx->qp_ctx[i]); + kfree(ctx->qp_ctx); +err_destroy_qps: + sec_destroy_qps(ctx->qps, sec->ctx_q_num); + return ret; +} + +static void sec_ctx_base_uninit(struct sec_ctx *ctx) +{ + int i; + + if (!ctx->qps) + return; + + for (i = 0; i < ctx->sec->ctx_q_num; i++) + sec_release_qp_ctx(ctx, &ctx->qp_ctx[i]); + + sec_destroy_qps(ctx->qps, ctx->sec->ctx_q_num); + kfree(ctx->qp_ctx); +} + +static int sec_cipher_init(struct sec_ctx *ctx) +{ + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + + if (!ctx->qps) + return 0; + + c_ctx->c_key = dma_alloc_coherent(ctx->dev, SEC_MAX_KEY_SIZE, + &c_ctx->c_key_dma, GFP_KERNEL); + if (!c_ctx->c_key) + return -ENOMEM; + + return 0; +} + +static void sec_cipher_uninit(struct sec_ctx *ctx) +{ + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + + if (!ctx->qps) + return; + + memzero_explicit(c_ctx->c_key, SEC_MAX_KEY_SIZE); + dma_free_coherent(ctx->dev, SEC_MAX_KEY_SIZE, + c_ctx->c_key, c_ctx->c_key_dma); +} + +static int sec_auth_init(struct sec_ctx *ctx) +{ + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + + a_ctx->a_key = dma_alloc_coherent(ctx->dev, SEC_MAX_AKEY_SIZE, + &a_ctx->a_key_dma, GFP_KERNEL); + if (!a_ctx->a_key) + return -ENOMEM; + + return 0; +} + +static void sec_auth_uninit(struct sec_ctx *ctx) +{ + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + + if (!ctx->qps) + return; + + memzero_explicit(a_ctx->a_key, SEC_MAX_AKEY_SIZE); + dma_free_coherent(ctx->dev, SEC_MAX_AKEY_SIZE, + a_ctx->a_key, a_ctx->a_key_dma); +} + +static int sec_skcipher_fbtfm_init(struct crypto_skcipher *tfm) +{ + const char *alg = crypto_tfm_alg_name(&tfm->base); + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + + c_ctx->fallback = false; + + c_ctx->fbtfm = crypto_alloc_sync_skcipher(alg, 0, + CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(c_ctx->fbtfm)) { + pr_err("failed to alloc fallback tfm for %s!\n", alg); + return PTR_ERR(c_ctx->fbtfm); + } + + return 0; +} + +static int sec_skcipher_init(struct crypto_skcipher *tfm) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + int ret; + + ctx->alg_type = SEC_SKCIPHER; + crypto_skcipher_set_reqsize_dma(tfm, sizeof(struct sec_req)); + ctx->c_ctx.ivsize = crypto_skcipher_ivsize(tfm); + if (ctx->c_ctx.ivsize > SEC_IV_SIZE) { + pr_err("get error skcipher iv size!\n"); + return -EINVAL; + } + + ret = sec_ctx_base_init(ctx); + if (ret && ret != -ENODEV) + return ret; + + ret = sec_cipher_init(ctx); + if (ret) + goto err_cipher_init; + + ret = sec_skcipher_fbtfm_init(tfm); + if (ret) + goto err_fbtfm_init; + + return 0; + +err_fbtfm_init: + sec_cipher_uninit(ctx); +err_cipher_init: + sec_ctx_base_uninit(ctx); + return ret; +} + +static void sec_skcipher_uninit(struct crypto_skcipher *tfm) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + + if (ctx->c_ctx.fbtfm) + crypto_free_sync_skcipher(ctx->c_ctx.fbtfm); + + sec_cipher_uninit(ctx); + sec_ctx_base_uninit(ctx); +} + +static int sec_skcipher_3des_setkey(struct crypto_skcipher *tfm, const u8 *key, const u32 keylen) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + int ret; + + ret = verify_skcipher_des3_key(tfm, key); + if (ret) + return ret; + + switch (keylen) { + case SEC_DES3_2KEY_SIZE: + c_ctx->c_key_len = SEC_CKEY_3DES_2KEY; + break; + case SEC_DES3_3KEY_SIZE: + c_ctx->c_key_len = SEC_CKEY_3DES_3KEY; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int sec_skcipher_aes_sm4_setkey(struct sec_cipher_ctx *c_ctx, + const u32 keylen, + const enum sec_cmode c_mode) +{ + if (c_mode == SEC_CMODE_XTS) { + switch (keylen) { + case SEC_XTS_MIN_KEY_SIZE: + c_ctx->c_key_len = SEC_CKEY_128BIT; + break; + case SEC_XTS_MID_KEY_SIZE: + c_ctx->fallback = true; + break; + case SEC_XTS_MAX_KEY_SIZE: + c_ctx->c_key_len = SEC_CKEY_256BIT; + break; + default: + pr_err("hisi_sec2: xts mode key error!\n"); + return -EINVAL; + } + } else { + if (c_ctx->c_alg == SEC_CALG_SM4 && + keylen != AES_KEYSIZE_128) { + pr_err("hisi_sec2: sm4 key error!\n"); + return -EINVAL; + } else { + switch (keylen) { + case AES_KEYSIZE_128: + c_ctx->c_key_len = SEC_CKEY_128BIT; + break; + case AES_KEYSIZE_192: + c_ctx->c_key_len = SEC_CKEY_192BIT; + break; + case AES_KEYSIZE_256: + c_ctx->c_key_len = SEC_CKEY_256BIT; + break; + default: + pr_err("hisi_sec2: aes key error!\n"); + return -EINVAL; + } + } + } + + return 0; +} + +static int sec_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key, + const u32 keylen, const enum sec_calg c_alg, + const enum sec_cmode c_mode) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + struct device *dev = ctx->dev; + int ret; + + if (!ctx->qps) + goto set_soft_key; + + if (c_mode == SEC_CMODE_XTS) { + ret = xts_verify_key(tfm, key, keylen); + if (ret) { + dev_err(dev, "xts mode key err!\n"); + return ret; + } + } + + c_ctx->c_alg = c_alg; + c_ctx->c_mode = c_mode; + + switch (c_alg) { + case SEC_CALG_3DES: + ret = sec_skcipher_3des_setkey(tfm, key, keylen); + break; + case SEC_CALG_AES: + case SEC_CALG_SM4: + ret = sec_skcipher_aes_sm4_setkey(c_ctx, keylen, c_mode); + break; + default: + dev_err(dev, "sec c_alg err!\n"); + return -EINVAL; + } + + if (ret) { + dev_err(dev, "set sec key err!\n"); + return ret; + } + + memcpy(c_ctx->c_key, key, keylen); + +set_soft_key: + ret = crypto_sync_skcipher_setkey(c_ctx->fbtfm, key, keylen); + if (ret) { + dev_err(dev, "failed to set fallback skcipher key!\n"); + return ret; + } + + return 0; +} + +#define GEN_SEC_SETKEY_FUNC(name, c_alg, c_mode) \ +static int sec_setkey_##name(struct crypto_skcipher *tfm, const u8 *key,\ + u32 keylen) \ +{ \ + return sec_skcipher_setkey(tfm, key, keylen, c_alg, c_mode); \ +} + +GEN_SEC_SETKEY_FUNC(aes_ecb, SEC_CALG_AES, SEC_CMODE_ECB) +GEN_SEC_SETKEY_FUNC(aes_cbc, SEC_CALG_AES, SEC_CMODE_CBC) +GEN_SEC_SETKEY_FUNC(aes_xts, SEC_CALG_AES, SEC_CMODE_XTS) +GEN_SEC_SETKEY_FUNC(aes_ctr, SEC_CALG_AES, SEC_CMODE_CTR) +GEN_SEC_SETKEY_FUNC(3des_ecb, SEC_CALG_3DES, SEC_CMODE_ECB) +GEN_SEC_SETKEY_FUNC(3des_cbc, SEC_CALG_3DES, SEC_CMODE_CBC) +GEN_SEC_SETKEY_FUNC(sm4_xts, SEC_CALG_SM4, SEC_CMODE_XTS) +GEN_SEC_SETKEY_FUNC(sm4_cbc, SEC_CALG_SM4, SEC_CMODE_CBC) +GEN_SEC_SETKEY_FUNC(sm4_ctr, SEC_CALG_SM4, SEC_CMODE_CTR) + +static int sec_cipher_pbuf_map(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *src) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct sec_request_buf *buf = &req->buf; + struct device *dev = ctx->dev; + int copy_size, pbuf_length; + int req_id = req->req_id; + struct crypto_aead *tfm; + u8 *mac_offset, *pbuf; + size_t authsize; + + if (ctx->alg_type == SEC_AEAD) + copy_size = aead_req->cryptlen + aead_req->assoclen; + else + copy_size = c_req->c_len; + + + pbuf = req->req_id < 0 ? buf->pbuf : qp_ctx->res[req_id].pbuf; + pbuf_length = sg_copy_to_buffer(src, sg_nents(src), pbuf, copy_size); + if (unlikely(pbuf_length != copy_size)) { + dev_err(dev, "copy src data to pbuf error!\n"); + return -EINVAL; + } + if (!c_req->encrypt && ctx->alg_type == SEC_AEAD) { + tfm = crypto_aead_reqtfm(aead_req); + authsize = crypto_aead_authsize(tfm); + mac_offset = pbuf + copy_size - authsize; + memcpy(req->aead_req.out_mac, mac_offset, authsize); + } + + if (req->req_id < 0) { + buf->in_dma = dma_map_single(dev, buf->pbuf, SEC_PBUF_SZ, DMA_BIDIRECTIONAL); + if (unlikely(dma_mapping_error(dev, buf->in_dma))) + return -ENOMEM; + + buf->out_dma = buf->in_dma; + return 0; + } + + req->in_dma = qp_ctx->res[req_id].pbuf_dma; + c_req->c_out_dma = req->in_dma; + + return 0; +} + +static void sec_cipher_pbuf_unmap(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *dst) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct sec_request_buf *buf = &req->buf; + int copy_size, pbuf_length; + int req_id = req->req_id; + + if (ctx->alg_type == SEC_AEAD) + copy_size = c_req->c_len + aead_req->assoclen; + else + copy_size = c_req->c_len; + + if (req->req_id < 0) + pbuf_length = sg_copy_from_buffer(dst, sg_nents(dst), buf->pbuf, copy_size); + else + pbuf_length = sg_copy_from_buffer(dst, sg_nents(dst), qp_ctx->res[req_id].pbuf, + copy_size); + if (unlikely(pbuf_length != copy_size)) + dev_err(ctx->dev, "copy pbuf data to dst error!\n"); + + if (req->req_id < 0) + dma_unmap_single(ctx->dev, buf->in_dma, SEC_PBUF_SZ, DMA_BIDIRECTIONAL); +} + +static int sec_aead_mac_init(struct sec_aead_req *req) +{ + struct aead_request *aead_req = req->aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(aead_req); + size_t authsize = crypto_aead_authsize(tfm); + struct scatterlist *sgl = aead_req->src; + u8 *mac_out = req->out_mac; + size_t copy_size; + off_t skip_size; + + /* Copy input mac */ + skip_size = aead_req->assoclen + aead_req->cryptlen - authsize; + copy_size = sg_pcopy_to_buffer(sgl, sg_nents(sgl), mac_out, authsize, skip_size); + if (unlikely(copy_size != authsize)) + return -EINVAL; + + return 0; +} + +static void fill_sg_to_hw_sge(struct scatterlist *sgl, struct sec_hw_sge *hw_sge) +{ + hw_sge->buf = sg_dma_address(sgl); + hw_sge->len = cpu_to_le32(sg_dma_len(sgl)); + hw_sge->page_ctrl = sg_virt(sgl); +} + +static int sec_cipher_to_hw_sgl(struct device *dev, struct scatterlist *src, + struct sec_hw_sgl *src_in, dma_addr_t *hw_sgl_dma, + int dma_dir) +{ + struct sec_hw_sge *curr_hw_sge = src_in->sge_entries; + u32 i, sg_n, sg_n_mapped; + struct scatterlist *sg; + u32 sge_var = 0; + + sg_n = sg_nents(src); + sg_n_mapped = dma_map_sg(dev, src, sg_n, dma_dir); + if (unlikely(!sg_n_mapped)) { + dev_err(dev, "dma mapping for SG error!\n"); + return -EINVAL; + } else if (unlikely(sg_n_mapped > SEC_SGE_NR_NUM)) { + dev_err(dev, "the number of entries in input scatterlist error!\n"); + dma_unmap_sg(dev, src, sg_n, dma_dir); + return -EINVAL; + } + + for_each_sg(src, sg, sg_n_mapped, i) { + fill_sg_to_hw_sge(sg, curr_hw_sge); + curr_hw_sge++; + sge_var++; + } + + src_in->entry_sum_in_sgl = cpu_to_le16(sge_var); + src_in->entry_sum_in_chain = cpu_to_le16(SEC_SGE_NR_NUM); + src_in->entry_length_in_sgl = cpu_to_le16(SEC_SGE_NR_NUM); + *hw_sgl_dma = dma_map_single(dev, src_in, sizeof(struct sec_hw_sgl), dma_dir); + if (unlikely(dma_mapping_error(dev, *hw_sgl_dma))) { + dma_unmap_sg(dev, src, sg_n, dma_dir); + return -ENOMEM; + } + + return 0; +} + +static void sec_cipher_put_hw_sgl(struct device *dev, struct scatterlist *src, + dma_addr_t src_in, int dma_dir) +{ + dma_unmap_single(dev, src_in, sizeof(struct sec_hw_sgl), dma_dir); + dma_unmap_sg(dev, src, sg_nents(src), dma_dir); +} + +static int sec_cipher_map_sgl(struct device *dev, struct sec_req *req, + struct scatterlist *src, struct scatterlist *dst) +{ + struct sec_hw_sgl *src_in = &req->buf.data_buf.in; + struct sec_hw_sgl *dst_out = &req->buf.data_buf.out; + int ret; + + if (dst == src) { + ret = sec_cipher_to_hw_sgl(dev, src, src_in, &req->buf.in_dma, + DMA_BIDIRECTIONAL); + req->buf.out_dma = req->buf.in_dma; + return ret; + } + + ret = sec_cipher_to_hw_sgl(dev, src, src_in, &req->buf.in_dma, DMA_TO_DEVICE); + if (unlikely(ret)) + return ret; + + ret = sec_cipher_to_hw_sgl(dev, dst, dst_out, &req->buf.out_dma, + DMA_FROM_DEVICE); + if (unlikely(ret)) { + sec_cipher_put_hw_sgl(dev, src, req->buf.in_dma, DMA_TO_DEVICE); + return ret; + } + + return 0; +} + +static int sec_cipher_map_inner(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *src, struct scatterlist *dst) +{ + struct sec_cipher_req *c_req = &req->c_req; + struct sec_aead_req *a_req = &req->aead_req; + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct sec_alg_res *res = &qp_ctx->res[req->req_id]; + struct device *dev = ctx->dev; + enum dma_data_direction src_direction; + int ret; + + if (req->use_pbuf) { + c_req->c_ivin = res->pbuf + SEC_PBUF_IV_OFFSET; + c_req->c_ivin_dma = res->pbuf_dma + SEC_PBUF_IV_OFFSET; + if (ctx->alg_type == SEC_AEAD) { + a_req->a_ivin = res->a_ivin; + a_req->a_ivin_dma = res->a_ivin_dma; + a_req->out_mac = res->pbuf + SEC_PBUF_MAC_OFFSET; + a_req->out_mac_dma = res->pbuf_dma + + SEC_PBUF_MAC_OFFSET; + } + return sec_cipher_pbuf_map(ctx, req, src); + } + + c_req->c_ivin = res->c_ivin; + c_req->c_ivin_dma = res->c_ivin_dma; + if (ctx->alg_type == SEC_AEAD) { + a_req->a_ivin = res->a_ivin; + a_req->a_ivin_dma = res->a_ivin_dma; + a_req->out_mac = res->out_mac; + a_req->out_mac_dma = res->out_mac_dma; + } + + src_direction = dst == src ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE; + req->in = hisi_acc_sg_buf_map_to_hw_sgl(dev, src, + qp_ctx->c_in_pool, + req->req_id, + &req->in_dma, src_direction); + if (IS_ERR(req->in)) { + dev_err(dev, "fail to dma map input sgl buffers!\n"); + return PTR_ERR(req->in); + } + + if (!c_req->encrypt && ctx->alg_type == SEC_AEAD) { + ret = sec_aead_mac_init(a_req); + if (unlikely(ret)) { + dev_err(dev, "fail to init mac data for ICV!\n"); + hisi_acc_sg_buf_unmap(dev, src, req->in, src_direction); + return ret; + } + } + + if (dst == src) { + c_req->c_out = req->in; + c_req->c_out_dma = req->in_dma; + } else { + c_req->c_out = hisi_acc_sg_buf_map_to_hw_sgl(dev, dst, + qp_ctx->c_out_pool, + req->req_id, + &c_req->c_out_dma, + DMA_FROM_DEVICE); + + if (IS_ERR(c_req->c_out)) { + dev_err(dev, "fail to dma map output sgl buffers!\n"); + hisi_acc_sg_buf_unmap(dev, src, req->in, src_direction); + return PTR_ERR(c_req->c_out); + } + } + + return 0; +} + +static int sec_cipher_map(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *src, struct scatterlist *dst) +{ + struct sec_aead_req *a_req = &req->aead_req; + struct sec_cipher_req *c_req = &req->c_req; + bool is_aead = (ctx->alg_type == SEC_AEAD); + struct device *dev = ctx->dev; + int ret = -ENOMEM; + + if (req->req_id >= 0) + return sec_cipher_map_inner(ctx, req, src, dst); + + c_req->c_ivin = c_req->c_ivin_buf; + c_req->c_ivin_dma = dma_map_single(dev, c_req->c_ivin, + SEC_IV_SIZE, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(dev, c_req->c_ivin_dma))) + return -ENOMEM; + + if (is_aead) { + a_req->a_ivin = a_req->a_ivin_buf; + a_req->out_mac = a_req->out_mac_buf; + a_req->a_ivin_dma = dma_map_single(dev, a_req->a_ivin, + SEC_IV_SIZE, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(dev, a_req->a_ivin_dma))) + goto free_c_ivin_dma; + + a_req->out_mac_dma = dma_map_single(dev, a_req->out_mac, + SEC_MAX_MAC_LEN, DMA_BIDIRECTIONAL); + if (unlikely(dma_mapping_error(dev, a_req->out_mac_dma))) + goto free_a_ivin_dma; + } + if (req->use_pbuf) { + ret = sec_cipher_pbuf_map(ctx, req, src); + if (unlikely(ret)) + goto free_out_mac_dma; + + return 0; + } + + if (!c_req->encrypt && is_aead) { + ret = sec_aead_mac_init(a_req); + if (unlikely(ret)) { + dev_err(dev, "fail to init mac data for ICV!\n"); + goto free_out_mac_dma; + } + } + + ret = sec_cipher_map_sgl(dev, req, src, dst); + if (unlikely(ret)) { + dev_err(dev, "fail to dma map input sgl buffers!\n"); + goto free_out_mac_dma; + } + + return 0; + +free_out_mac_dma: + if (is_aead) + dma_unmap_single(dev, a_req->out_mac_dma, SEC_MAX_MAC_LEN, DMA_BIDIRECTIONAL); +free_a_ivin_dma: + if (is_aead) + dma_unmap_single(dev, a_req->a_ivin_dma, SEC_IV_SIZE, DMA_TO_DEVICE); +free_c_ivin_dma: + dma_unmap_single(dev, c_req->c_ivin_dma, SEC_IV_SIZE, DMA_TO_DEVICE); + return ret; +} + +static void sec_cipher_unmap(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *src, struct scatterlist *dst) +{ + struct sec_aead_req *a_req = &req->aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct device *dev = ctx->dev; + + if (req->req_id >= 0) { + if (req->use_pbuf) { + sec_cipher_pbuf_unmap(ctx, req, dst); + } else { + if (dst != src) { + hisi_acc_sg_buf_unmap(dev, dst, c_req->c_out, DMA_FROM_DEVICE); + hisi_acc_sg_buf_unmap(dev, src, req->in, DMA_TO_DEVICE); + } else { + hisi_acc_sg_buf_unmap(dev, src, req->in, DMA_BIDIRECTIONAL); + } + } + return; + } + + if (req->use_pbuf) { + sec_cipher_pbuf_unmap(ctx, req, dst); + } else { + if (dst != src) { + sec_cipher_put_hw_sgl(dev, dst, req->buf.out_dma, DMA_FROM_DEVICE); + sec_cipher_put_hw_sgl(dev, src, req->buf.in_dma, DMA_TO_DEVICE); + } else { + sec_cipher_put_hw_sgl(dev, src, req->buf.in_dma, DMA_BIDIRECTIONAL); + } + } + + dma_unmap_single(dev, c_req->c_ivin_dma, SEC_IV_SIZE, DMA_TO_DEVICE); + if (ctx->alg_type == SEC_AEAD) { + dma_unmap_single(dev, a_req->a_ivin_dma, SEC_IV_SIZE, DMA_TO_DEVICE); + dma_unmap_single(dev, a_req->out_mac_dma, SEC_MAX_MAC_LEN, DMA_BIDIRECTIONAL); + } +} + +static int sec_skcipher_sgl_map(struct sec_ctx *ctx, struct sec_req *req) +{ + struct skcipher_request *sq = req->c_req.sk_req; + + return sec_cipher_map(ctx, req, sq->src, sq->dst); +} + +static void sec_skcipher_sgl_unmap(struct sec_ctx *ctx, struct sec_req *req) +{ + struct skcipher_request *sq = req->c_req.sk_req; + + sec_cipher_unmap(ctx, req, sq->src, sq->dst); +} + +static int sec_aead_aes_set_key(struct sec_cipher_ctx *c_ctx, + struct crypto_authenc_keys *keys) +{ + switch (keys->enckeylen) { + case AES_KEYSIZE_128: + c_ctx->c_key_len = SEC_CKEY_128BIT; + break; + case AES_KEYSIZE_192: + c_ctx->c_key_len = SEC_CKEY_192BIT; + break; + case AES_KEYSIZE_256: + c_ctx->c_key_len = SEC_CKEY_256BIT; + break; + default: + pr_err("hisi_sec2: aead aes key error!\n"); + return -EINVAL; + } + memcpy(c_ctx->c_key, keys->enckey, keys->enckeylen); + + return 0; +} + +static int sec_aead_auth_set_key(struct sec_auth_ctx *ctx, + struct crypto_authenc_keys *keys) +{ + struct crypto_shash *hash_tfm = ctx->hash_tfm; + int blocksize, digestsize, ret; + + blocksize = crypto_shash_blocksize(hash_tfm); + digestsize = crypto_shash_digestsize(hash_tfm); + if (keys->authkeylen > blocksize) { + ret = crypto_shash_tfm_digest(hash_tfm, keys->authkey, + keys->authkeylen, ctx->a_key); + if (ret) { + pr_err("hisi_sec2: aead auth digest error!\n"); + return -EINVAL; + } + ctx->a_key_len = digestsize; + } else { + if (keys->authkeylen) + memcpy(ctx->a_key, keys->authkey, keys->authkeylen); + ctx->a_key_len = keys->authkeylen; + } + + return 0; +} + +static int sec_aead_setauthsize(struct crypto_aead *aead, unsigned int authsize) +{ + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct sec_ctx *ctx = crypto_tfm_ctx(tfm); + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + + return crypto_aead_setauthsize(a_ctx->fallback_aead_tfm, authsize); +} + +static int sec_aead_fallback_setkey(struct sec_auth_ctx *a_ctx, + struct crypto_aead *tfm, const u8 *key, + unsigned int keylen) +{ + crypto_aead_clear_flags(a_ctx->fallback_aead_tfm, CRYPTO_TFM_REQ_MASK); + crypto_aead_set_flags(a_ctx->fallback_aead_tfm, + crypto_aead_get_flags(tfm) & CRYPTO_TFM_REQ_MASK); + return crypto_aead_setkey(a_ctx->fallback_aead_tfm, key, keylen); +} + +static int sec_aead_setkey(struct crypto_aead *tfm, const u8 *key, + const u32 keylen, const enum sec_hash_alg a_alg, + const enum sec_calg c_alg, + const enum sec_cmode c_mode) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + struct device *dev = ctx->dev; + struct crypto_authenc_keys keys; + int ret; + + if (!ctx->qps) + return sec_aead_fallback_setkey(a_ctx, tfm, key, keylen); + + ctx->a_ctx.a_alg = a_alg; + ctx->c_ctx.c_alg = c_alg; + c_ctx->c_mode = c_mode; + + if (c_mode == SEC_CMODE_CCM || c_mode == SEC_CMODE_GCM) { + ret = sec_skcipher_aes_sm4_setkey(c_ctx, keylen, c_mode); + if (ret) { + dev_err(dev, "set sec aes ccm cipher key err!\n"); + return ret; + } + memcpy(c_ctx->c_key, key, keylen); + + return sec_aead_fallback_setkey(a_ctx, tfm, key, keylen); + } + + ret = crypto_authenc_extractkeys(&keys, key, keylen); + if (ret) { + dev_err(dev, "sec extract aead keys err!\n"); + goto bad_key; + } + + ret = sec_aead_aes_set_key(c_ctx, &keys); + if (ret) { + dev_err(dev, "set sec cipher key err!\n"); + goto bad_key; + } + + ret = sec_aead_auth_set_key(&ctx->a_ctx, &keys); + if (ret) { + dev_err(dev, "set sec auth key err!\n"); + goto bad_key; + } + + ret = sec_aead_fallback_setkey(a_ctx, tfm, key, keylen); + if (ret) { + dev_err(dev, "set sec fallback key err!\n"); + goto bad_key; + } + + return 0; + +bad_key: + memzero_explicit(&keys, sizeof(struct crypto_authenc_keys)); + return ret; +} + + +#define GEN_SEC_AEAD_SETKEY_FUNC(name, aalg, calg, cmode) \ +static int sec_setkey_##name(struct crypto_aead *tfm, const u8 *key, u32 keylen) \ +{ \ + return sec_aead_setkey(tfm, key, keylen, aalg, calg, cmode); \ +} + +GEN_SEC_AEAD_SETKEY_FUNC(aes_cbc_sha1, SEC_A_HMAC_SHA1, SEC_CALG_AES, SEC_CMODE_CBC) +GEN_SEC_AEAD_SETKEY_FUNC(aes_cbc_sha256, SEC_A_HMAC_SHA256, SEC_CALG_AES, SEC_CMODE_CBC) +GEN_SEC_AEAD_SETKEY_FUNC(aes_cbc_sha512, SEC_A_HMAC_SHA512, SEC_CALG_AES, SEC_CMODE_CBC) +GEN_SEC_AEAD_SETKEY_FUNC(aes_ccm, 0, SEC_CALG_AES, SEC_CMODE_CCM) +GEN_SEC_AEAD_SETKEY_FUNC(aes_gcm, 0, SEC_CALG_AES, SEC_CMODE_GCM) +GEN_SEC_AEAD_SETKEY_FUNC(sm4_ccm, 0, SEC_CALG_SM4, SEC_CMODE_CCM) +GEN_SEC_AEAD_SETKEY_FUNC(sm4_gcm, 0, SEC_CALG_SM4, SEC_CMODE_GCM) + +static int sec_aead_sgl_map(struct sec_ctx *ctx, struct sec_req *req) +{ + struct aead_request *aq = req->aead_req.aead_req; + + return sec_cipher_map(ctx, req, aq->src, aq->dst); +} + +static void sec_aead_sgl_unmap(struct sec_ctx *ctx, struct sec_req *req) +{ + struct aead_request *aq = req->aead_req.aead_req; + + sec_cipher_unmap(ctx, req, aq->src, aq->dst); +} + +static int sec_request_transfer(struct sec_ctx *ctx, struct sec_req *req) +{ + int ret; + + ret = ctx->req_op->buf_map(ctx, req); + if (unlikely(ret)) + return ret; + + ctx->req_op->do_transfer(ctx, req); + + ret = ctx->req_op->bd_fill(ctx, req); + if (unlikely(ret)) + goto unmap_req_buf; + + return ret; + +unmap_req_buf: + ctx->req_op->buf_unmap(ctx, req); + return ret; +} + +static void sec_request_untransfer(struct sec_ctx *ctx, struct sec_req *req) +{ + ctx->req_op->buf_unmap(ctx, req); +} + +static void sec_skcipher_copy_iv(struct sec_ctx *ctx, struct sec_req *req) +{ + struct skcipher_request *sk_req = req->c_req.sk_req; + struct sec_cipher_req *c_req = &req->c_req; + + memcpy(c_req->c_ivin, sk_req->iv, ctx->c_ctx.ivsize); +} + +static int sec_skcipher_bd_fill(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + struct sec_cipher_req *c_req = &req->c_req; + struct sec_sqe *sec_sqe = &req->sec_sqe; + u8 scene, sa_type, da_type; + u8 bd_type, cipher; + u8 de = 0; + + memset(sec_sqe, 0, sizeof(struct sec_sqe)); + + sec_sqe->type2.c_key_addr = cpu_to_le64(c_ctx->c_key_dma); + sec_sqe->type2.c_ivin_addr = cpu_to_le64(c_req->c_ivin_dma); + if (req->req_id < 0) { + sec_sqe->type2.data_src_addr = cpu_to_le64(req->buf.in_dma); + sec_sqe->type2.data_dst_addr = cpu_to_le64(req->buf.out_dma); + } else { + sec_sqe->type2.data_src_addr = cpu_to_le64(req->in_dma); + sec_sqe->type2.data_dst_addr = cpu_to_le64(c_req->c_out_dma); + } + if (sec_sqe->type2.data_src_addr != sec_sqe->type2.data_dst_addr) + de = 0x1 << SEC_DE_OFFSET; + + sec_sqe->type2.icvw_kmode |= cpu_to_le16(((u16)c_ctx->c_mode) << + SEC_CMODE_OFFSET); + sec_sqe->type2.c_alg = c_ctx->c_alg; + sec_sqe->type2.icvw_kmode |= cpu_to_le16(((u16)c_ctx->c_key_len) << + SEC_CKEY_OFFSET); + + bd_type = SEC_BD_TYPE2; + if (c_req->encrypt) + cipher = SEC_CIPHER_ENC << SEC_CIPHER_OFFSET; + else + cipher = SEC_CIPHER_DEC << SEC_CIPHER_OFFSET; + sec_sqe->type_cipher_auth = bd_type | cipher; + + /* Set destination and source address type */ + if (req->use_pbuf) { + sa_type = SEC_PBUF << SEC_SRC_SGL_OFFSET; + da_type = SEC_PBUF << SEC_DST_SGL_OFFSET; + } else { + sa_type = SEC_SGL << SEC_SRC_SGL_OFFSET; + da_type = SEC_SGL << SEC_DST_SGL_OFFSET; + } + + sec_sqe->sdm_addr_type |= da_type; + scene = SEC_COMM_SCENE << SEC_SCENE_OFFSET; + + sec_sqe->sds_sa_type = (de | scene | sa_type); + + sec_sqe->type2.clen_ivhlen |= cpu_to_le32(c_req->c_len); + + return 0; +} + +static int sec_skcipher_bd_fill_v3(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_sqe3 *sec_sqe3 = &req->sec_sqe3; + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + struct sec_cipher_req *c_req = &req->c_req; + u32 bd_param = 0; + u16 cipher; + + memset(sec_sqe3, 0, sizeof(struct sec_sqe3)); + + sec_sqe3->c_key_addr = cpu_to_le64(c_ctx->c_key_dma); + sec_sqe3->no_scene.c_ivin_addr = cpu_to_le64(c_req->c_ivin_dma); + if (req->req_id < 0) { + sec_sqe3->data_src_addr = cpu_to_le64(req->buf.in_dma); + sec_sqe3->data_dst_addr = cpu_to_le64(req->buf.out_dma); + } else { + sec_sqe3->data_src_addr = cpu_to_le64(req->in_dma); + sec_sqe3->data_dst_addr = cpu_to_le64(c_req->c_out_dma); + } + if (sec_sqe3->data_src_addr != sec_sqe3->data_dst_addr) + bd_param |= 0x1 << SEC_DE_OFFSET_V3; + + sec_sqe3->c_mode_alg = ((u8)c_ctx->c_alg << SEC_CALG_OFFSET_V3) | + c_ctx->c_mode; + sec_sqe3->c_icv_key |= cpu_to_le16(((u16)c_ctx->c_key_len) << + SEC_CKEY_OFFSET_V3); + + if (c_req->encrypt) + cipher = SEC_CIPHER_ENC; + else + cipher = SEC_CIPHER_DEC; + sec_sqe3->c_icv_key |= cpu_to_le16(cipher); + + /* Set the CTR counter mode is 128bit rollover */ + sec_sqe3->auth_mac_key = cpu_to_le32((u32)SEC_CTR_CNT_ROLLOVER << + SEC_CTR_CNT_OFFSET); + + if (req->use_pbuf) { + bd_param |= SEC_PBUF << SEC_SRC_SGL_OFFSET_V3; + bd_param |= SEC_PBUF << SEC_DST_SGL_OFFSET_V3; + } else { + bd_param |= SEC_SGL << SEC_SRC_SGL_OFFSET_V3; + bd_param |= SEC_SGL << SEC_DST_SGL_OFFSET_V3; + } + + bd_param |= SEC_COMM_SCENE << SEC_SCENE_OFFSET_V3; + + bd_param |= SEC_BD_TYPE3; + sec_sqe3->bd_param = cpu_to_le32(bd_param); + + sec_sqe3->c_len_ivin |= cpu_to_le32(c_req->c_len); + sec_sqe3->tag = cpu_to_le64((unsigned long)req); + + return 0; +} + +/* increment counter (128-bit int) */ +static void ctr_iv_inc(__u8 *counter, __u8 bits, __u32 nums) +{ + do { + --bits; + nums += counter[bits]; + counter[bits] = nums & BITS_MASK; + nums >>= BYTE_BITS; + } while (bits && nums); +} + +static void sec_update_iv(struct sec_req *req, enum sec_alg_type alg_type) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct skcipher_request *sk_req = req->c_req.sk_req; + u32 iv_size = req->ctx->c_ctx.ivsize; + struct scatterlist *sgl; + unsigned int cryptlen; + size_t sz; + u8 *iv; + + if (alg_type == SEC_SKCIPHER) { + sgl = req->c_req.encrypt ? sk_req->dst : sk_req->src; + iv = sk_req->iv; + cryptlen = sk_req->cryptlen; + } else { + sgl = req->c_req.encrypt ? aead_req->dst : aead_req->src; + iv = aead_req->iv; + cryptlen = aead_req->cryptlen; + } + + if (req->ctx->c_ctx.c_mode == SEC_CMODE_CBC) { + sz = sg_pcopy_to_buffer(sgl, sg_nents(sgl), iv, iv_size, + cryptlen - iv_size); + if (unlikely(sz != iv_size)) + dev_err(req->ctx->dev, "copy output iv error!\n"); + } else { + sz = (cryptlen + iv_size - 1) / iv_size; + ctr_iv_inc(iv, iv_size, sz); + } +} + +static void sec_skcipher_callback(struct sec_ctx *ctx, struct sec_req *req, + int err) +{ + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + + if (req->req_id >= 0) + sec_free_req_id(req); + + /* IV output at encrypto of CBC/CTR mode */ + if (!err && (ctx->c_ctx.c_mode == SEC_CMODE_CBC || + ctx->c_ctx.c_mode == SEC_CMODE_CTR) && req->c_req.encrypt) + sec_update_iv(req, SEC_SKCIPHER); + + crypto_request_complete(req->base, err); + sec_alg_send_backlog(ctx, qp_ctx); +} + +static void set_aead_auth_iv(struct sec_ctx *ctx, struct sec_req *req) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(aead_req); + size_t authsize = crypto_aead_authsize(tfm); + struct sec_aead_req *a_req = &req->aead_req; + struct sec_cipher_req *c_req = &req->c_req; + u32 data_size = aead_req->cryptlen; + u8 flage = 0; + u8 cm, cl; + + /* the specification has been checked in aead_iv_demension_check() */ + cl = c_req->c_ivin[0] + 1; + c_req->c_ivin[ctx->c_ctx.ivsize - cl] = 0x00; + memset(&c_req->c_ivin[ctx->c_ctx.ivsize - cl], 0, cl); + c_req->c_ivin[ctx->c_ctx.ivsize - IV_LAST_BYTE1] = IV_CTR_INIT; + + /* the last 3bit is L' */ + flage |= c_req->c_ivin[0] & IV_CL_MASK; + + /* the M' is bit3~bit5, the Flags is bit6 */ + cm = (authsize - IV_CM_CAL_NUM) / IV_CM_CAL_NUM; + flage |= cm << IV_CM_OFFSET; + if (aead_req->assoclen) + flage |= 0x01 << IV_FLAGS_OFFSET; + + memcpy(a_req->a_ivin, c_req->c_ivin, ctx->c_ctx.ivsize); + a_req->a_ivin[0] = flage; + + /* + * the last 32bit is counter's initial number, + * but the nonce uses the first 16bit + * the tail 16bit fill with the cipher length + */ + if (!c_req->encrypt) + data_size = aead_req->cryptlen - authsize; + + a_req->a_ivin[ctx->c_ctx.ivsize - IV_LAST_BYTE1] = + data_size & IV_LAST_BYTE_MASK; + data_size >>= IV_BYTE_OFFSET; + a_req->a_ivin[ctx->c_ctx.ivsize - IV_LAST_BYTE2] = + data_size & IV_LAST_BYTE_MASK; +} + +static void sec_aead_set_iv(struct sec_ctx *ctx, struct sec_req *req) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct sec_aead_req *a_req = &req->aead_req; + struct sec_cipher_req *c_req = &req->c_req; + + memcpy(c_req->c_ivin, aead_req->iv, ctx->c_ctx.ivsize); + + if (ctx->c_ctx.c_mode == SEC_CMODE_CCM) { + /* + * CCM 16Byte Cipher_IV: {1B_Flage,13B_IV,2B_counter}, + * the counter must set to 0x01 + * CCM 16Byte Auth_IV: {1B_AFlage,13B_IV,2B_Ptext_length} + */ + set_aead_auth_iv(ctx, req); + } else if (ctx->c_ctx.c_mode == SEC_CMODE_GCM) { + /* GCM 12Byte Cipher_IV == Auth_IV */ + memcpy(a_req->a_ivin, c_req->c_ivin, SEC_AIV_SIZE); + } +} + +static void sec_auth_bd_fill_xcm(struct sec_auth_ctx *ctx, int dir, + struct sec_req *req, struct sec_sqe *sec_sqe) +{ + struct sec_aead_req *a_req = &req->aead_req; + struct aead_request *aq = a_req->aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(aq); + size_t authsize = crypto_aead_authsize(tfm); + + /* C_ICV_Len is MAC size, 0x4 ~ 0x10 */ + sec_sqe->type2.icvw_kmode |= cpu_to_le16((u16)authsize); + + /* mode set to CCM/GCM, don't set {A_Alg, AKey_Len, MAC_Len} */ + sec_sqe->type2.a_key_addr = sec_sqe->type2.c_key_addr; + sec_sqe->type2.a_ivin_addr = cpu_to_le64(a_req->a_ivin_dma); + sec_sqe->type_cipher_auth |= SEC_NO_AUTH << SEC_AUTH_OFFSET; + + if (dir) + sec_sqe->sds_sa_type &= SEC_CIPHER_AUTH; + else + sec_sqe->sds_sa_type |= SEC_AUTH_CIPHER; + + sec_sqe->type2.alen_ivllen = cpu_to_le32(aq->assoclen); + sec_sqe->type2.auth_src_offset = cpu_to_le16(0x0); + sec_sqe->type2.cipher_src_offset = cpu_to_le16((u16)aq->assoclen); + + sec_sqe->type2.mac_addr = cpu_to_le64(a_req->out_mac_dma); +} + +static void sec_auth_bd_fill_xcm_v3(struct sec_auth_ctx *ctx, int dir, + struct sec_req *req, struct sec_sqe3 *sqe3) +{ + struct sec_aead_req *a_req = &req->aead_req; + struct aead_request *aq = a_req->aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(aq); + size_t authsize = crypto_aead_authsize(tfm); + + /* C_ICV_Len is MAC size, 0x4 ~ 0x10 */ + sqe3->c_icv_key |= cpu_to_le16((u16)authsize << SEC_MAC_OFFSET_V3); + + /* mode set to CCM/GCM, don't set {A_Alg, AKey_Len, MAC_Len} */ + sqe3->a_key_addr = sqe3->c_key_addr; + sqe3->auth_ivin.a_ivin_addr = cpu_to_le64(a_req->a_ivin_dma); + sqe3->auth_mac_key |= SEC_NO_AUTH; + + if (dir) + sqe3->huk_iv_seq &= SEC_CIPHER_AUTH_V3; + else + sqe3->huk_iv_seq |= SEC_AUTH_CIPHER_V3; + + sqe3->a_len_key = cpu_to_le32(aq->assoclen); + sqe3->auth_src_offset = cpu_to_le16(0x0); + sqe3->cipher_src_offset = cpu_to_le16((u16)aq->assoclen); + sqe3->mac_addr = cpu_to_le64(a_req->out_mac_dma); +} + +static void sec_auth_bd_fill_ex(struct sec_auth_ctx *ctx, int dir, + struct sec_req *req, struct sec_sqe *sec_sqe) +{ + struct sec_aead_req *a_req = &req->aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct aead_request *aq = a_req->aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(aq); + size_t authsize = crypto_aead_authsize(tfm); + + sec_sqe->type2.a_key_addr = cpu_to_le64(ctx->a_key_dma); + + sec_sqe->type2.mac_key_alg = cpu_to_le32(BYTES_TO_WORDS(authsize)); + + sec_sqe->type2.mac_key_alg |= + cpu_to_le32((u32)BYTES_TO_WORDS(ctx->a_key_len) << SEC_AKEY_OFFSET); + + sec_sqe->type2.mac_key_alg |= + cpu_to_le32((u32)(ctx->a_alg) << SEC_AEAD_ALG_OFFSET); + + if (dir) { + sec_sqe->type_cipher_auth |= SEC_AUTH_TYPE1 << SEC_AUTH_OFFSET; + sec_sqe->sds_sa_type &= SEC_CIPHER_AUTH; + } else { + sec_sqe->type_cipher_auth |= SEC_AUTH_TYPE2 << SEC_AUTH_OFFSET; + sec_sqe->sds_sa_type |= SEC_AUTH_CIPHER; + } + sec_sqe->type2.alen_ivllen = cpu_to_le32(c_req->c_len + aq->assoclen); + + sec_sqe->type2.cipher_src_offset = cpu_to_le16((u16)aq->assoclen); + + sec_sqe->type2.mac_addr = cpu_to_le64(a_req->out_mac_dma); +} + +static int sec_aead_bd_fill(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_auth_ctx *auth_ctx = &ctx->a_ctx; + struct sec_sqe *sec_sqe = &req->sec_sqe; + int ret; + + ret = sec_skcipher_bd_fill(ctx, req); + if (unlikely(ret)) { + dev_err(ctx->dev, "skcipher bd fill is error!\n"); + return ret; + } + + if (ctx->c_ctx.c_mode == SEC_CMODE_CCM || + ctx->c_ctx.c_mode == SEC_CMODE_GCM) + sec_auth_bd_fill_xcm(auth_ctx, req->c_req.encrypt, req, sec_sqe); + else + sec_auth_bd_fill_ex(auth_ctx, req->c_req.encrypt, req, sec_sqe); + + return 0; +} + +static void sec_auth_bd_fill_ex_v3(struct sec_auth_ctx *ctx, int dir, + struct sec_req *req, struct sec_sqe3 *sqe3) +{ + struct sec_aead_req *a_req = &req->aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct aead_request *aq = a_req->aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(aq); + size_t authsize = crypto_aead_authsize(tfm); + + sqe3->a_key_addr = cpu_to_le64(ctx->a_key_dma); + + sqe3->auth_mac_key |= + cpu_to_le32(BYTES_TO_WORDS(authsize) << SEC_MAC_OFFSET_V3); + + sqe3->auth_mac_key |= + cpu_to_le32((u32)BYTES_TO_WORDS(ctx->a_key_len) << SEC_AKEY_OFFSET_V3); + + sqe3->auth_mac_key |= + cpu_to_le32((u32)(ctx->a_alg) << SEC_AUTH_ALG_OFFSET_V3); + + if (dir) { + sqe3->auth_mac_key |= cpu_to_le32((u32)SEC_AUTH_TYPE1); + sqe3->huk_iv_seq &= SEC_CIPHER_AUTH_V3; + } else { + sqe3->auth_mac_key |= cpu_to_le32((u32)SEC_AUTH_TYPE2); + sqe3->huk_iv_seq |= SEC_AUTH_CIPHER_V3; + } + sqe3->a_len_key = cpu_to_le32(c_req->c_len + aq->assoclen); + + sqe3->cipher_src_offset = cpu_to_le16((u16)aq->assoclen); + + sqe3->mac_addr = cpu_to_le64(a_req->out_mac_dma); +} + +static int sec_aead_bd_fill_v3(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_auth_ctx *auth_ctx = &ctx->a_ctx; + struct sec_sqe3 *sec_sqe3 = &req->sec_sqe3; + int ret; + + ret = sec_skcipher_bd_fill_v3(ctx, req); + if (unlikely(ret)) { + dev_err(ctx->dev, "skcipher bd3 fill is error!\n"); + return ret; + } + + if (ctx->c_ctx.c_mode == SEC_CMODE_CCM || + ctx->c_ctx.c_mode == SEC_CMODE_GCM) + sec_auth_bd_fill_xcm_v3(auth_ctx, req->c_req.encrypt, + req, sec_sqe3); + else + sec_auth_bd_fill_ex_v3(auth_ctx, req->c_req.encrypt, + req, sec_sqe3); + + return 0; +} + +static void sec_aead_callback(struct sec_ctx *c, struct sec_req *req, int err) +{ + struct aead_request *a_req = req->aead_req.aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(a_req); + size_t authsize = crypto_aead_authsize(tfm); + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + size_t sz; + + if (!err && req->c_req.encrypt) { + if (c->c_ctx.c_mode == SEC_CMODE_CBC) + sec_update_iv(req, SEC_AEAD); + + sz = sg_pcopy_from_buffer(a_req->dst, sg_nents(a_req->dst), req->aead_req.out_mac, + authsize, a_req->cryptlen + a_req->assoclen); + if (unlikely(sz != authsize)) { + dev_err(c->dev, "copy out mac err!\n"); + err = -EINVAL; + } + } + + if (req->req_id >= 0) + sec_free_req_id(req); + + crypto_request_complete(req->base, err); + sec_alg_send_backlog(c, qp_ctx); +} + +static void sec_request_uninit(struct sec_req *req) +{ + if (req->req_id >= 0) + sec_free_req_id(req); +} + +static int sec_request_init(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_qp_ctx *qp_ctx; + int i = 0; + + do { + qp_ctx = &ctx->qp_ctx[i]; + req->req_id = sec_alloc_req_id(req, qp_ctx); + } while (req->req_id < 0 && ++i < ctx->sec->ctx_q_num); + + req->qp_ctx = qp_ctx; + + return 0; +} + +static int sec_process(struct sec_ctx *ctx, struct sec_req *req) +{ + int ret; + + ret = sec_request_init(ctx, req); + if (unlikely(ret)) + return ret; + + ret = sec_request_transfer(ctx, req); + if (unlikely(ret)) + goto err_uninit_req; + + /* Output IV as decrypto */ + if (!req->c_req.encrypt && (ctx->c_ctx.c_mode == SEC_CMODE_CBC || + ctx->c_ctx.c_mode == SEC_CMODE_CTR)) + sec_update_iv(req, ctx->alg_type); + + ret = ctx->req_op->bd_send(ctx, req); + if (unlikely((ret != -EBUSY && ret != -EINPROGRESS))) { + dev_err_ratelimited(ctx->dev, "send sec request failed!\n"); + goto err_send_req; + } + + return ret; + +err_send_req: + /* As failing, restore the IV from user */ + if (ctx->c_ctx.c_mode == SEC_CMODE_CBC && !req->c_req.encrypt) { + if (ctx->alg_type == SEC_SKCIPHER) + memcpy(req->c_req.sk_req->iv, req->c_req.c_ivin, + ctx->c_ctx.ivsize); + else + memcpy(req->aead_req.aead_req->iv, req->c_req.c_ivin, + ctx->c_ctx.ivsize); + } + + sec_request_untransfer(ctx, req); + +err_uninit_req: + sec_request_uninit(req); + if (ctx->alg_type == SEC_AEAD) + ret = sec_aead_soft_crypto(ctx, req->aead_req.aead_req, + req->c_req.encrypt); + else + ret = sec_skcipher_soft_crypto(ctx, req->c_req.sk_req, + req->c_req.encrypt); + return ret; +} + +static const struct sec_req_op sec_skcipher_req_ops = { + .buf_map = sec_skcipher_sgl_map, + .buf_unmap = sec_skcipher_sgl_unmap, + .do_transfer = sec_skcipher_copy_iv, + .bd_fill = sec_skcipher_bd_fill, + .bd_send = sec_bd_send, + .callback = sec_skcipher_callback, + .process = sec_process, +}; + +static const struct sec_req_op sec_aead_req_ops = { + .buf_map = sec_aead_sgl_map, + .buf_unmap = sec_aead_sgl_unmap, + .do_transfer = sec_aead_set_iv, + .bd_fill = sec_aead_bd_fill, + .bd_send = sec_bd_send, + .callback = sec_aead_callback, + .process = sec_process, +}; + +static const struct sec_req_op sec_skcipher_req_ops_v3 = { + .buf_map = sec_skcipher_sgl_map, + .buf_unmap = sec_skcipher_sgl_unmap, + .do_transfer = sec_skcipher_copy_iv, + .bd_fill = sec_skcipher_bd_fill_v3, + .bd_send = sec_bd_send, + .callback = sec_skcipher_callback, + .process = sec_process, +}; + +static const struct sec_req_op sec_aead_req_ops_v3 = { + .buf_map = sec_aead_sgl_map, + .buf_unmap = sec_aead_sgl_unmap, + .do_transfer = sec_aead_set_iv, + .bd_fill = sec_aead_bd_fill_v3, + .bd_send = sec_bd_send, + .callback = sec_aead_callback, + .process = sec_process, +}; + +static int sec_skcipher_ctx_init(struct crypto_skcipher *tfm) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + int ret; + + ret = sec_skcipher_init(tfm); + if (ret) + return ret; + + if (!ctx->qps) + return 0; + + if (ctx->sec->qm.ver < QM_HW_V3) { + ctx->type_supported = SEC_BD_TYPE2; + ctx->req_op = &sec_skcipher_req_ops; + } else { + ctx->type_supported = SEC_BD_TYPE3; + ctx->req_op = &sec_skcipher_req_ops_v3; + } + + return 0; +} + +static void sec_skcipher_ctx_exit(struct crypto_skcipher *tfm) +{ + sec_skcipher_uninit(tfm); +} + +static int sec_aead_init(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + int ret; + + crypto_aead_set_reqsize_dma(tfm, sizeof(struct sec_req)); + ctx->alg_type = SEC_AEAD; + ctx->c_ctx.ivsize = crypto_aead_ivsize(tfm); + if (ctx->c_ctx.ivsize < SEC_AIV_SIZE || + ctx->c_ctx.ivsize > SEC_IV_SIZE) { + pr_err("get error aead iv size!\n"); + return -EINVAL; + } + + ret = sec_ctx_base_init(ctx); + if (ret) + return ret; + if (ctx->sec->qm.ver < QM_HW_V3) { + ctx->type_supported = SEC_BD_TYPE2; + ctx->req_op = &sec_aead_req_ops; + } else { + ctx->type_supported = SEC_BD_TYPE3; + ctx->req_op = &sec_aead_req_ops_v3; + } + + ret = sec_auth_init(ctx); + if (ret) + goto err_auth_init; + + ret = sec_cipher_init(ctx); + if (ret) + goto err_cipher_init; + + return ret; + +err_cipher_init: + sec_auth_uninit(ctx); +err_auth_init: + sec_ctx_base_uninit(ctx); + return ret; +} + +static void sec_aead_exit(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + + sec_cipher_uninit(ctx); + sec_auth_uninit(ctx); + sec_ctx_base_uninit(ctx); +} + +static int sec_aead_ctx_init(struct crypto_aead *tfm, const char *hash_name) +{ + struct aead_alg *alg = crypto_aead_alg(tfm); + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + const char *aead_name = alg->base.cra_name; + int ret; + + ret = sec_aead_init(tfm); + if (ret && ret != -ENODEV) { + pr_err("hisi_sec2: aead init error!\n"); + return ret; + } + + a_ctx->hash_tfm = crypto_alloc_shash(hash_name, 0, 0); + if (IS_ERR(a_ctx->hash_tfm)) { + dev_err(ctx->dev, "aead alloc shash error!\n"); + sec_aead_exit(tfm); + return PTR_ERR(a_ctx->hash_tfm); + } + + a_ctx->fallback_aead_tfm = crypto_alloc_aead(aead_name, 0, + CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_ASYNC); + if (IS_ERR(a_ctx->fallback_aead_tfm)) { + dev_err(ctx->dev, "aead driver alloc fallback tfm error!\n"); + crypto_free_shash(ctx->a_ctx.hash_tfm); + sec_aead_exit(tfm); + return PTR_ERR(a_ctx->fallback_aead_tfm); + } + + return 0; +} + +static void sec_aead_ctx_exit(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + + crypto_free_aead(ctx->a_ctx.fallback_aead_tfm); + crypto_free_shash(ctx->a_ctx.hash_tfm); + sec_aead_exit(tfm); +} + +static int sec_aead_xcm_ctx_init(struct crypto_aead *tfm) +{ + struct aead_alg *alg = crypto_aead_alg(tfm); + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + const char *aead_name = alg->base.cra_name; + int ret; + + ret = sec_aead_init(tfm); + if (ret && ret != -ENODEV) { + dev_err(ctx->dev, "hisi_sec2: aead xcm init error!\n"); + return ret; + } + + a_ctx->fallback_aead_tfm = crypto_alloc_aead(aead_name, 0, + CRYPTO_ALG_NEED_FALLBACK | + CRYPTO_ALG_ASYNC); + if (IS_ERR(a_ctx->fallback_aead_tfm)) { + dev_err(ctx->dev, "aead driver alloc fallback tfm error!\n"); + sec_aead_exit(tfm); + return PTR_ERR(a_ctx->fallback_aead_tfm); + } + + return 0; +} + +static void sec_aead_xcm_ctx_exit(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + + crypto_free_aead(ctx->a_ctx.fallback_aead_tfm); + sec_aead_exit(tfm); +} + +static int sec_aead_sha1_ctx_init(struct crypto_aead *tfm) +{ + return sec_aead_ctx_init(tfm, "sha1"); +} + +static int sec_aead_sha256_ctx_init(struct crypto_aead *tfm) +{ + return sec_aead_ctx_init(tfm, "sha256"); +} + +static int sec_aead_sha512_ctx_init(struct crypto_aead *tfm) +{ + return sec_aead_ctx_init(tfm, "sha512"); +} + +static int sec_skcipher_cryptlen_check(struct sec_ctx *ctx, struct sec_req *sreq) +{ + u32 cryptlen = sreq->c_req.sk_req->cryptlen; + struct device *dev = ctx->dev; + u8 c_mode = ctx->c_ctx.c_mode; + int ret = 0; + + switch (c_mode) { + case SEC_CMODE_XTS: + if (unlikely(cryptlen < AES_BLOCK_SIZE)) { + dev_err(dev, "skcipher XTS mode input length error!\n"); + ret = -EINVAL; + } + break; + case SEC_CMODE_ECB: + case SEC_CMODE_CBC: + if (unlikely(cryptlen & (AES_BLOCK_SIZE - 1))) { + dev_err(dev, "skcipher AES input length error!\n"); + ret = -EINVAL; + } + break; + case SEC_CMODE_CTR: + break; + default: + ret = -EINVAL; + } + + return ret; +} + +static int sec_skcipher_param_check(struct sec_ctx *ctx, + struct sec_req *sreq, bool *need_fallback) +{ + struct skcipher_request *sk_req = sreq->c_req.sk_req; + struct device *dev = ctx->dev; + u8 c_alg = ctx->c_ctx.c_alg; + + if (unlikely(!sk_req->src || !sk_req->dst)) { + dev_err(dev, "skcipher input param error!\n"); + return -EINVAL; + } + + if (sk_req->cryptlen > MAX_INPUT_DATA_LEN) + *need_fallback = true; + + sreq->c_req.c_len = sk_req->cryptlen; + + if (ctx->pbuf_supported && sk_req->cryptlen <= SEC_PBUF_SZ) + sreq->use_pbuf = true; + else + sreq->use_pbuf = false; + + if (c_alg == SEC_CALG_3DES) { + if (unlikely(sk_req->cryptlen & (DES3_EDE_BLOCK_SIZE - 1))) { + dev_err(dev, "skcipher 3des input length error!\n"); + return -EINVAL; + } + return 0; + } else if (c_alg == SEC_CALG_AES || c_alg == SEC_CALG_SM4) { + return sec_skcipher_cryptlen_check(ctx, sreq); + } + + dev_err(dev, "skcipher algorithm error!\n"); + + return -EINVAL; +} + +static int sec_skcipher_soft_crypto(struct sec_ctx *ctx, + struct skcipher_request *sreq, bool encrypt) +{ + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, c_ctx->fbtfm); + struct device *dev = ctx->dev; + int ret; + + if (!c_ctx->fbtfm) { + dev_err_ratelimited(dev, "the soft tfm isn't supported in the current system.\n"); + return -EINVAL; + } + + skcipher_request_set_sync_tfm(subreq, c_ctx->fbtfm); + + /* software need sync mode to do crypto */ + skcipher_request_set_callback(subreq, sreq->base.flags, + NULL, NULL); + skcipher_request_set_crypt(subreq, sreq->src, sreq->dst, + sreq->cryptlen, sreq->iv); + if (encrypt) + ret = crypto_skcipher_encrypt(subreq); + else + ret = crypto_skcipher_decrypt(subreq); + + skcipher_request_zero(subreq); + + return ret; +} + +static int sec_skcipher_crypto(struct skcipher_request *sk_req, bool encrypt) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(sk_req); + struct sec_req *req = skcipher_request_ctx_dma(sk_req); + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + bool need_fallback = false; + int ret; + + if (!ctx->qps) + goto soft_crypto; + + if (!sk_req->cryptlen) { + if (ctx->c_ctx.c_mode == SEC_CMODE_XTS) + return -EINVAL; + return 0; + } + + req->flag = sk_req->base.flags; + req->c_req.sk_req = sk_req; + req->c_req.encrypt = encrypt; + req->ctx = ctx; + req->base = &sk_req->base; + + ret = sec_skcipher_param_check(ctx, req, &need_fallback); + if (unlikely(ret)) + return -EINVAL; + + if (unlikely(ctx->c_ctx.fallback || need_fallback)) + goto soft_crypto; + + return ctx->req_op->process(ctx, req); + +soft_crypto: + return sec_skcipher_soft_crypto(ctx, sk_req, encrypt); +} + +static int sec_skcipher_encrypt(struct skcipher_request *sk_req) +{ + return sec_skcipher_crypto(sk_req, true); +} + +static int sec_skcipher_decrypt(struct skcipher_request *sk_req) +{ + return sec_skcipher_crypto(sk_req, false); +} + +#define SEC_SKCIPHER_ALG(sec_cra_name, sec_set_key, \ + sec_min_key_size, sec_max_key_size, blk_size, iv_size)\ +{\ + .base = {\ + .cra_name = sec_cra_name,\ + .cra_driver_name = "hisi_sec_"sec_cra_name,\ + .cra_priority = SEC_PRIORITY,\ + .cra_flags = CRYPTO_ALG_ASYNC |\ + CRYPTO_ALG_NEED_FALLBACK,\ + .cra_blocksize = blk_size,\ + .cra_ctxsize = sizeof(struct sec_ctx),\ + .cra_module = THIS_MODULE,\ + },\ + .init = sec_skcipher_ctx_init,\ + .exit = sec_skcipher_ctx_exit,\ + .setkey = sec_set_key,\ + .decrypt = sec_skcipher_decrypt,\ + .encrypt = sec_skcipher_encrypt,\ + .min_keysize = sec_min_key_size,\ + .max_keysize = sec_max_key_size,\ + .ivsize = iv_size,\ +} + +static struct sec_skcipher sec_skciphers[] = { + { + .alg_msk = BIT(0), + .alg = SEC_SKCIPHER_ALG("ecb(aes)", sec_setkey_aes_ecb, AES_MIN_KEY_SIZE, + AES_MAX_KEY_SIZE, AES_BLOCK_SIZE, 0), + }, + { + .alg_msk = BIT(1), + .alg = SEC_SKCIPHER_ALG("cbc(aes)", sec_setkey_aes_cbc, AES_MIN_KEY_SIZE, + AES_MAX_KEY_SIZE, AES_BLOCK_SIZE, AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(2), + .alg = SEC_SKCIPHER_ALG("ctr(aes)", sec_setkey_aes_ctr, AES_MIN_KEY_SIZE, + AES_MAX_KEY_SIZE, SEC_MIN_BLOCK_SZ, AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(3), + .alg = SEC_SKCIPHER_ALG("xts(aes)", sec_setkey_aes_xts, SEC_XTS_MIN_KEY_SIZE, + SEC_XTS_MAX_KEY_SIZE, AES_BLOCK_SIZE, AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(12), + .alg = SEC_SKCIPHER_ALG("cbc(sm4)", sec_setkey_sm4_cbc, AES_MIN_KEY_SIZE, + AES_MIN_KEY_SIZE, AES_BLOCK_SIZE, AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(13), + .alg = SEC_SKCIPHER_ALG("ctr(sm4)", sec_setkey_sm4_ctr, AES_MIN_KEY_SIZE, + AES_MIN_KEY_SIZE, SEC_MIN_BLOCK_SZ, AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(14), + .alg = SEC_SKCIPHER_ALG("xts(sm4)", sec_setkey_sm4_xts, SEC_XTS_MIN_KEY_SIZE, + SEC_XTS_MIN_KEY_SIZE, AES_BLOCK_SIZE, AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(23), + .alg = SEC_SKCIPHER_ALG("ecb(des3_ede)", sec_setkey_3des_ecb, SEC_DES3_3KEY_SIZE, + SEC_DES3_3KEY_SIZE, DES3_EDE_BLOCK_SIZE, 0), + }, + { + .alg_msk = BIT(24), + .alg = SEC_SKCIPHER_ALG("cbc(des3_ede)", sec_setkey_3des_cbc, SEC_DES3_3KEY_SIZE, + SEC_DES3_3KEY_SIZE, DES3_EDE_BLOCK_SIZE, + DES3_EDE_BLOCK_SIZE), + }, +}; + +static int aead_iv_demension_check(struct aead_request *aead_req) +{ + u8 cl; + + cl = aead_req->iv[0] + 1; + if (cl < IV_CL_MIN || cl > IV_CL_MAX) + return -EINVAL; + + if (cl < IV_CL_MID && aead_req->cryptlen >> (BYTE_BITS * cl)) + return -EOVERFLOW; + + return 0; +} + +static int sec_aead_spec_check(struct sec_ctx *ctx, struct sec_req *sreq) +{ + struct aead_request *req = sreq->aead_req.aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + size_t sz = crypto_aead_authsize(tfm); + u8 c_mode = ctx->c_ctx.c_mode; + int ret; + + if (unlikely(ctx->sec->qm.ver == QM_HW_V2 && !sreq->c_req.c_len)) + return -EINVAL; + + if (unlikely(req->cryptlen + req->assoclen > MAX_INPUT_DATA_LEN || + req->assoclen > SEC_MAX_AAD_LEN)) + return -EINVAL; + + if (c_mode == SEC_CMODE_CCM) { + if (unlikely(req->assoclen > SEC_MAX_CCM_AAD_LEN)) + return -EINVAL; + + ret = aead_iv_demension_check(req); + if (unlikely(ret)) + return -EINVAL; + } else if (c_mode == SEC_CMODE_CBC) { + if (unlikely(sz & WORD_MASK)) + return -EINVAL; + if (unlikely(ctx->a_ctx.a_key_len & WORD_MASK)) + return -EINVAL; + } else if (c_mode == SEC_CMODE_GCM) { + if (unlikely(sz < SEC_GCM_MIN_AUTH_SZ)) + return -EINVAL; + } + + return 0; +} + +static int sec_aead_param_check(struct sec_ctx *ctx, struct sec_req *sreq, bool *need_fallback) +{ + struct aead_request *req = sreq->aead_req.aead_req; + struct device *dev = ctx->dev; + u8 c_alg = ctx->c_ctx.c_alg; + + if (unlikely(!req->src || !req->dst)) { + dev_err(dev, "aead input param error!\n"); + return -EINVAL; + } + + if (unlikely(ctx->c_ctx.c_mode == SEC_CMODE_CBC && + sreq->c_req.c_len & (AES_BLOCK_SIZE - 1))) { + dev_err(dev, "aead cbc mode input data length error!\n"); + return -EINVAL; + } + + /* Support AES or SM4 */ + if (unlikely(c_alg != SEC_CALG_AES && c_alg != SEC_CALG_SM4)) { + dev_err(dev, "aead crypto alg error!\n"); + return -EINVAL; + } + + if (unlikely(sec_aead_spec_check(ctx, sreq))) { + *need_fallback = true; + return -EINVAL; + } + + if (ctx->pbuf_supported && (req->cryptlen + req->assoclen) <= + SEC_PBUF_SZ) + sreq->use_pbuf = true; + else + sreq->use_pbuf = false; + + return 0; +} + +static int sec_aead_soft_crypto(struct sec_ctx *ctx, + struct aead_request *aead_req, + bool encrypt) +{ + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + struct aead_request *subreq; + int ret; + + subreq = aead_request_alloc(a_ctx->fallback_aead_tfm, GFP_KERNEL); + if (!subreq) + return -ENOMEM; + + aead_request_set_tfm(subreq, a_ctx->fallback_aead_tfm); + aead_request_set_callback(subreq, aead_req->base.flags, + aead_req->base.complete, aead_req->base.data); + aead_request_set_crypt(subreq, aead_req->src, aead_req->dst, + aead_req->cryptlen, aead_req->iv); + aead_request_set_ad(subreq, aead_req->assoclen); + + if (encrypt) + ret = crypto_aead_encrypt(subreq); + else + ret = crypto_aead_decrypt(subreq); + aead_request_free(subreq); + + return ret; +} + +static int sec_aead_crypto(struct aead_request *a_req, bool encrypt) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(a_req); + struct sec_req *req = aead_request_ctx_dma(a_req); + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + size_t sz = crypto_aead_authsize(tfm); + bool need_fallback = false; + int ret; + + if (!ctx->qps) + goto soft_crypto; + + req->flag = a_req->base.flags; + req->aead_req.aead_req = a_req; + req->c_req.encrypt = encrypt; + req->ctx = ctx; + req->base = &a_req->base; + req->c_req.c_len = a_req->cryptlen - (req->c_req.encrypt ? 0 : sz); + + ret = sec_aead_param_check(ctx, req, &need_fallback); + if (unlikely(ret)) { + if (need_fallback) + goto soft_crypto; + return -EINVAL; + } + + return ctx->req_op->process(ctx, req); + +soft_crypto: + return sec_aead_soft_crypto(ctx, a_req, encrypt); +} + +static int sec_aead_encrypt(struct aead_request *a_req) +{ + return sec_aead_crypto(a_req, true); +} + +static int sec_aead_decrypt(struct aead_request *a_req) +{ + return sec_aead_crypto(a_req, false); +} + +#define SEC_AEAD_ALG(sec_cra_name, sec_set_key, ctx_init,\ + ctx_exit, blk_size, iv_size, max_authsize)\ +{\ + .base = {\ + .cra_name = sec_cra_name,\ + .cra_driver_name = "hisi_sec_"sec_cra_name,\ + .cra_priority = SEC_PRIORITY,\ + .cra_flags = CRYPTO_ALG_ASYNC |\ + CRYPTO_ALG_NEED_FALLBACK,\ + .cra_blocksize = blk_size,\ + .cra_ctxsize = sizeof(struct sec_ctx),\ + .cra_module = THIS_MODULE,\ + },\ + .init = ctx_init,\ + .exit = ctx_exit,\ + .setkey = sec_set_key,\ + .setauthsize = sec_aead_setauthsize,\ + .decrypt = sec_aead_decrypt,\ + .encrypt = sec_aead_encrypt,\ + .ivsize = iv_size,\ + .maxauthsize = max_authsize,\ +} + +static struct sec_aead sec_aeads[] = { + { + .alg_msk = BIT(6), + .alg = SEC_AEAD_ALG("ccm(aes)", sec_setkey_aes_ccm, sec_aead_xcm_ctx_init, + sec_aead_xcm_ctx_exit, SEC_MIN_BLOCK_SZ, AES_BLOCK_SIZE, + AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(7), + .alg = SEC_AEAD_ALG("gcm(aes)", sec_setkey_aes_gcm, sec_aead_xcm_ctx_init, + sec_aead_xcm_ctx_exit, SEC_MIN_BLOCK_SZ, SEC_AIV_SIZE, + AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(17), + .alg = SEC_AEAD_ALG("ccm(sm4)", sec_setkey_sm4_ccm, sec_aead_xcm_ctx_init, + sec_aead_xcm_ctx_exit, SEC_MIN_BLOCK_SZ, AES_BLOCK_SIZE, + AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(18), + .alg = SEC_AEAD_ALG("gcm(sm4)", sec_setkey_sm4_gcm, sec_aead_xcm_ctx_init, + sec_aead_xcm_ctx_exit, SEC_MIN_BLOCK_SZ, SEC_AIV_SIZE, + AES_BLOCK_SIZE), + }, + { + .alg_msk = BIT(43), + .alg = SEC_AEAD_ALG("authenc(hmac(sha1),cbc(aes))", sec_setkey_aes_cbc_sha1, + sec_aead_sha1_ctx_init, sec_aead_ctx_exit, AES_BLOCK_SIZE, + AES_BLOCK_SIZE, SHA1_DIGEST_SIZE), + }, + { + .alg_msk = BIT(44), + .alg = SEC_AEAD_ALG("authenc(hmac(sha256),cbc(aes))", sec_setkey_aes_cbc_sha256, + sec_aead_sha256_ctx_init, sec_aead_ctx_exit, AES_BLOCK_SIZE, + AES_BLOCK_SIZE, SHA256_DIGEST_SIZE), + }, + { + .alg_msk = BIT(45), + .alg = SEC_AEAD_ALG("authenc(hmac(sha512),cbc(aes))", sec_setkey_aes_cbc_sha512, + sec_aead_sha512_ctx_init, sec_aead_ctx_exit, AES_BLOCK_SIZE, + AES_BLOCK_SIZE, SHA512_DIGEST_SIZE), + }, +}; + +static void sec_unregister_skcipher(u64 alg_mask, int end) +{ + int i; + + for (i = 0; i < end; i++) + if (sec_skciphers[i].alg_msk & alg_mask) + crypto_unregister_skcipher(&sec_skciphers[i].alg); +} + +static int sec_register_skcipher(u64 alg_mask) +{ + int i, ret, count; + + count = ARRAY_SIZE(sec_skciphers); + + for (i = 0; i < count; i++) { + if (!(sec_skciphers[i].alg_msk & alg_mask)) + continue; + + ret = crypto_register_skcipher(&sec_skciphers[i].alg); + if (ret) + goto err; + } + + return 0; + +err: + sec_unregister_skcipher(alg_mask, i); + + return ret; +} + +static void sec_unregister_aead(u64 alg_mask, int end) +{ + int i; + + for (i = 0; i < end; i++) + if (sec_aeads[i].alg_msk & alg_mask) + crypto_unregister_aead(&sec_aeads[i].alg); +} + +static int sec_register_aead(u64 alg_mask) +{ + int i, ret, count; + + count = ARRAY_SIZE(sec_aeads); + + for (i = 0; i < count; i++) { + if (!(sec_aeads[i].alg_msk & alg_mask)) + continue; + + ret = crypto_register_aead(&sec_aeads[i].alg); + if (ret) + goto err; + } + + return 0; + +err: + sec_unregister_aead(alg_mask, i); + + return ret; +} + +int sec_register_to_crypto(struct hisi_qm *qm) +{ + u64 alg_mask; + int ret = 0; + + alg_mask = sec_get_alg_bitmap(qm, SEC_DRV_ALG_BITMAP_HIGH_TB, + SEC_DRV_ALG_BITMAP_LOW_TB); + + mutex_lock(&sec_algs_lock); + if (sec_available_devs) { + sec_available_devs++; + goto unlock; + } + + ret = sec_register_skcipher(alg_mask); + if (ret) + goto unlock; + + ret = sec_register_aead(alg_mask); + if (ret) + goto unreg_skcipher; + + sec_available_devs++; + mutex_unlock(&sec_algs_lock); + + return 0; + +unreg_skcipher: + sec_unregister_skcipher(alg_mask, ARRAY_SIZE(sec_skciphers)); +unlock: + mutex_unlock(&sec_algs_lock); + return ret; +} + +void sec_unregister_from_crypto(struct hisi_qm *qm) +{ + u64 alg_mask; + + alg_mask = sec_get_alg_bitmap(qm, SEC_DRV_ALG_BITMAP_HIGH_TB, + SEC_DRV_ALG_BITMAP_LOW_TB); + + mutex_lock(&sec_algs_lock); + if (--sec_available_devs) + goto unlock; + + sec_unregister_aead(alg_mask, ARRAY_SIZE(sec_aeads)); + sec_unregister_skcipher(alg_mask, ARRAY_SIZE(sec_skciphers)); + +unlock: + mutex_unlock(&sec_algs_lock); +} diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.h b/drivers/crypto/hisilicon/sec2/sec_crypto.h new file mode 100644 index 000000000..04725b514 --- /dev/null +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.h @@ -0,0 +1,397 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2019 HiSilicon Limited. */ + +#ifndef __HISI_SEC_V2_CRYPTO_H +#define __HISI_SEC_V2_CRYPTO_H + +#define SEC_AIV_SIZE 12 +#define SEC_IV_SIZE 24 +#define SEC_MAX_KEY_SIZE 64 +#define SEC_MAX_AKEY_SIZE 128 +#define SEC_COMM_SCENE 0 +#define SEC_MIN_BLOCK_SZ 1 + +enum sec_calg { + SEC_CALG_3DES = 0x1, + SEC_CALG_AES = 0x2, + SEC_CALG_SM4 = 0x3, +}; + +enum sec_hash_alg { + SEC_A_HMAC_SHA1 = 0x10, + SEC_A_HMAC_SHA256 = 0x11, + SEC_A_HMAC_SHA512 = 0x15, +}; + +enum sec_cmode { + SEC_CMODE_ECB = 0x0, + SEC_CMODE_CBC = 0x1, + SEC_CMODE_CTR = 0x4, + SEC_CMODE_CCM = 0x5, + SEC_CMODE_GCM = 0x6, + SEC_CMODE_XTS = 0x7, +}; + +enum sec_ckey_type { + SEC_CKEY_128BIT = 0x0, + SEC_CKEY_192BIT = 0x1, + SEC_CKEY_256BIT = 0x2, + SEC_CKEY_3DES_3KEY = 0x1, + SEC_CKEY_3DES_2KEY = 0x3, +}; + +enum sec_bd_type { + SEC_BD_TYPE1 = 0x1, + SEC_BD_TYPE2 = 0x2, + SEC_BD_TYPE3 = 0x3, +}; + +enum sec_auth { + SEC_NO_AUTH = 0x0, + SEC_AUTH_TYPE1 = 0x1, + SEC_AUTH_TYPE2 = 0x2, +}; + +enum sec_cipher_dir { + SEC_CIPHER_ENC = 0x1, + SEC_CIPHER_DEC = 0x2, +}; + +enum sec_addr_type { + SEC_PBUF = 0x0, + SEC_SGL = 0x1, + SEC_PRP = 0x2, +}; + +struct bd_status { + u64 tag; + u8 done; + u8 err_type; + u16 flag; + u16 icv; +}; + +enum { + AUTHPAD_PAD, + AUTHPAD_NOPAD, +}; + +enum { + AIGEN_GEN, + AIGEN_NOGEN, +}; + +struct sec_sqe_type2 { + /* + * mac_len: 0~4 bits + * a_key_len: 5~10 bits + * a_alg: 11~16 bits + */ + __le32 mac_key_alg; + + /* + * c_icv_len: 0~5 bits + * c_width: 6~8 bits + * c_key_len: 9~11 bits + * c_mode: 12~15 bits + */ + __le16 icvw_kmode; + + /* c_alg: 0~3 bits */ + __u8 c_alg; + __u8 rsvd4; + + /* + * a_len: 0~23 bits + * iv_offset_l: 24~31 bits + */ + __le32 alen_ivllen; + + /* + * c_len: 0~23 bits + * iv_offset_h: 24~31 bits + */ + __le32 clen_ivhlen; + + __le16 auth_src_offset; + __le16 cipher_src_offset; + __le16 cs_ip_header_offset; + __le16 cs_udp_header_offset; + __le16 pass_word_len; + __le16 dk_len; + __u8 salt3; + __u8 salt2; + __u8 salt1; + __u8 salt0; + + __le16 tag; + __le16 rsvd5; + + /* + * c_pad_type: 0~3 bits + * c_pad_len: 4~11 bits + * c_pad_data_type: 12~15 bits + */ + __le16 cph_pad; + + /* c_pad_len_field: 0~1 bits */ + __le16 c_pad_len_field; + + __le64 long_a_data_len; + __le64 a_ivin_addr; + __le64 a_key_addr; + __le64 mac_addr; + __le64 c_ivin_addr; + __le64 c_key_addr; + + __le64 data_src_addr; + __le64 data_dst_addr; + + /* + * done: 0 bit + * icv: 1~3 bits + * csc: 4~6 bits + * flag: 7-10 bits + * dif_check: 11~13 bits + */ + __le16 done_flag; + + __u8 error_type; + __u8 warning_type; + __u8 mac_i3; + __u8 mac_i2; + __u8 mac_i1; + __u8 mac_i0; + __le16 check_sum_i; + __u8 tls_pad_len_i; + __u8 rsvd12; + __le32 counter; +}; + +struct sec_sqe { + /* + * type: 0~3 bits + * cipher: 4~5 bits + * auth: 6~7 bit s + */ + __u8 type_cipher_auth; + + /* + * seq: 0 bit + * de: 1~2 bits + * scene: 3~6 bits + * src_addr_type: ~7 bit, with sdm_addr_type 0-1 bits + */ + __u8 sds_sa_type; + + /* + * src_addr_type: 0~1 bits, not used now, + * if support PRP, set this field, or set zero. + * dst_addr_type: 2~4 bits + * mac_addr_type: 5~7 bits + */ + __u8 sdm_addr_type; + __u8 rsvd0; + + /* + * nonce_len(type2): 0~3 bits + * huk(type2): 4 bit + * key_s(type2): 5 bit + * ci_gen: 6~7 bits + */ + __u8 huk_key_ci; + + /* + * ai_gen: 0~1 bits + * a_pad(type2): 2~3 bits + * c_s(type2): 4~5 bits + */ + __u8 ai_apd_cs; + + /* + * rhf(type2): 0 bit + * c_key_type: 1~2 bits + * a_key_type: 3~4 bits + * write_frame_len(type2): 5~7 bits + */ + __u8 rca_key_frm; + + /* + * cal_iv_addr_en(type2): 0 bit + * tls_up(type2): 1 bit + * inveld: 7 bit + */ + __u8 iv_tls_ld; + + /* Just using type2 BD now */ + struct sec_sqe_type2 type2; +}; + +struct bd3_auth_ivin { + __le64 a_ivin_addr; + __le32 rsvd0; + __le32 rsvd1; +} __packed __aligned(4); + +struct bd3_skip_data { + __le32 rsvd0; + + /* + * gran_num: 0~15 bits + * reserved: 16~31 bits + */ + __le32 gran_num; + + /* + * src_skip_data_len: 0~24 bits + * reserved: 25~31 bits + */ + __le32 src_skip_data_len; + + /* + * dst_skip_data_len: 0~24 bits + * reserved: 25~31 bits + */ + __le32 dst_skip_data_len; +}; + +struct bd3_stream_scene { + __le64 c_ivin_addr; + __le64 long_a_data_len; + + /* + * auth_pad: 0~1 bits + * stream_protocol: 2~4 bits + * reserved: 5~7 bits + */ + __u8 stream_auth_pad; + __u8 plaintext_type; + __le16 pad_len_1p3; +} __packed __aligned(4); + +struct bd3_no_scene { + __le64 c_ivin_addr; + __le32 rsvd0; + __le32 rsvd1; + __le32 rsvd2; +} __packed __aligned(4); + +struct bd3_check_sum { + __u8 rsvd0; + __u8 hac_sva_status; + __le16 check_sum_i; +}; + +struct bd3_tls_type_back { + __u8 tls_1p3_type_back; + __u8 hac_sva_status; + __le16 pad_len_1p3_back; +}; + +struct sec_sqe3 { + /* + * type: 0~3 bit + * bd_invalid: 4 bit + * scene: 5~8 bit + * de: 9~10 bit + * src_addr_type: 11~13 bit + * dst_addr_type: 14~16 bit + * mac_addr_type: 17~19 bit + * reserved: 20~31 bits + */ + __le32 bd_param; + + /* + * cipher: 0~1 bits + * ci_gen: 2~3 bit + * c_icv_len: 4~9 bit + * c_width: 10~12 bits + * c_key_len: 13~15 bits + */ + __le16 c_icv_key; + + /* + * c_mode : 0~3 bits + * c_alg : 4~7 bits + */ + __u8 c_mode_alg; + + /* + * nonce_len : 0~3 bits + * huk : 4 bits + * cal_iv_addr_en : 5 bits + * seq : 6 bits + * reserved : 7 bits + */ + __u8 huk_iv_seq; + + __le64 tag; + __le64 data_src_addr; + __le64 a_key_addr; + union { + struct bd3_auth_ivin auth_ivin; + struct bd3_skip_data skip_data; + }; + + __le64 c_key_addr; + + /* + * auth: 0~1 bits + * ai_gen: 2~3 bits + * mac_len: 4~8 bits + * akey_len: 9~14 bits + * a_alg: 15~20 bits + * key_sel: 21~24 bits + * ctr_count_mode/sm4_xts: 25~26 bits + * sva_prefetch: 27 bits + * key_wrap_num: 28~30 bits + * update_key: 31 bits + */ + __le32 auth_mac_key; + __le32 salt; + __le16 auth_src_offset; + __le16 cipher_src_offset; + + /* + * auth_len: 0~23 bit + * auth_key_offset: 24~31 bits + */ + __le32 a_len_key; + + /* + * cipher_len: 0~23 bit + * auth_ivin_offset: 24~31 bits + */ + __le32 c_len_ivin; + __le64 data_dst_addr; + __le64 mac_addr; + union { + struct bd3_stream_scene stream_scene; + struct bd3_no_scene no_scene; + }; + + /* + * done: 0 bit + * icv: 1~3 bit + * csc: 4~6 bit + * flag: 7~10 bit + * reserved: 11~15 bit + */ + __le16 done_flag; + __u8 error_type; + __u8 warning_type; + union { + __le32 mac_i; + __le32 kek_key_addr_l; + }; + union { + __le32 kek_key_addr_h; + struct bd3_check_sum check_sum; + struct bd3_tls_type_back tls_type_back; + }; + __le32 counter; +} __packed __aligned(4); + +int sec_register_to_crypto(struct hisi_qm *qm); +void sec_unregister_from_crypto(struct hisi_qm *qm); +#endif diff --git a/drivers/crypto/hisilicon/sec2/sec_main.c b/drivers/crypto/hisilicon/sec2/sec_main.c new file mode 100644 index 000000000..752565200 --- /dev/null +++ b/drivers/crypto/hisilicon/sec2/sec_main.c @@ -0,0 +1,1575 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 HiSilicon Limited. */ + +#include <linux/acpi.h> +#include <linux/bitops.h> +#include <linux/debugfs.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/iommu.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/pm_runtime.h> +#include <linux/seq_file.h> +#include <linux/topology.h> +#include <linux/uacce.h> +#include "sec.h" + +#define CAP_FILE_PERMISSION 0444 +#define SEC_VF_NUM 63 +#define SEC_QUEUE_NUM_V1 4096 +#define PCI_DEVICE_ID_HUAWEI_SEC_PF 0xa255 + +#define SEC_BD_ERR_CHK_EN0 0xEFFFFFFF +#define SEC_BD_ERR_CHK_EN1 0x7ffff7fd +#define SEC_BD_ERR_CHK_EN3 0xffffbfff + +#define SEC_SQE_SIZE 128 +#define SEC_PF_DEF_Q_NUM 256 +#define SEC_PF_DEF_Q_BASE 0 +#define SEC_CTX_Q_NUM_DEF 2 +#define SEC_CTX_Q_NUM_MAX 32 + +#define SEC_CTRL_CNT_CLR_CE 0x301120 +#define SEC_CTRL_CNT_CLR_CE_BIT BIT(0) +#define SEC_CORE_INT_SOURCE 0x301010 +#define SEC_CORE_INT_MASK 0x301000 +#define SEC_CORE_INT_STATUS 0x301008 +#define SEC_CORE_SRAM_ECC_ERR_INFO 0x301C14 +#define SEC_ECC_NUM 16 +#define SEC_ECC_MASH 0xFF +#define SEC_CORE_INT_DISABLE 0x0 + +#define SEC_RAS_CE_REG 0x301050 +#define SEC_RAS_FE_REG 0x301054 +#define SEC_RAS_NFE_REG 0x301058 +#define SEC_RAS_FE_ENB_MSK 0x0 +#define SEC_OOO_SHUTDOWN_SEL 0x301014 +#define SEC_RAS_DISABLE 0x0 +#define SEC_AXI_ERROR_MASK (BIT(0) | BIT(1)) +#define SEC_RAS_CLEAR_ALL GENMASK(31, 0) + +#define SEC_MEM_START_INIT_REG 0x301100 +#define SEC_MEM_INIT_DONE_REG 0x301104 + +/* clock gating */ +#define SEC_CONTROL_REG 0x301200 +#define SEC_DYNAMIC_GATE_REG 0x30121c +#define SEC_CORE_AUTO_GATE 0x30212c +#define SEC_DYNAMIC_GATE_EN 0x7fff +#define SEC_CORE_AUTO_GATE_EN GENMASK(3, 0) +#define SEC_CLK_GATE_ENABLE BIT(3) +#define SEC_CLK_GATE_DISABLE (~BIT(3)) + +#define SEC_TRNG_EN_SHIFT 8 +#define SEC_AXI_SHUTDOWN_ENABLE BIT(12) +#define SEC_AXI_SHUTDOWN_DISABLE 0xFFFFEFFF + +#define SEC_INTERFACE_USER_CTRL0_REG 0x301220 +#define SEC_INTERFACE_USER_CTRL1_REG 0x301224 +#define SEC_SAA_EN_REG 0x301270 +#define SEC_BD_ERR_CHK_EN_REG0 0x301380 +#define SEC_BD_ERR_CHK_EN_REG1 0x301384 +#define SEC_BD_ERR_CHK_EN_REG3 0x30138c + +#define SEC_USER0_SMMU_NORMAL (BIT(23) | BIT(15)) +#define SEC_USER1_SMMU_NORMAL (BIT(31) | BIT(23) | BIT(15) | BIT(7)) +#define SEC_USER1_ENABLE_CONTEXT_SSV BIT(24) +#define SEC_USER1_ENABLE_DATA_SSV BIT(16) +#define SEC_USER1_WB_CONTEXT_SSV BIT(8) +#define SEC_USER1_WB_DATA_SSV BIT(0) +#define SEC_USER1_SVA_SET (SEC_USER1_ENABLE_CONTEXT_SSV | \ + SEC_USER1_ENABLE_DATA_SSV | \ + SEC_USER1_WB_CONTEXT_SSV | \ + SEC_USER1_WB_DATA_SSV) +#define SEC_USER1_SMMU_SVA (SEC_USER1_SMMU_NORMAL | SEC_USER1_SVA_SET) +#define SEC_USER1_SMMU_MASK (~SEC_USER1_SVA_SET) +#define SEC_INTERFACE_USER_CTRL0_REG_V3 0x302220 +#define SEC_INTERFACE_USER_CTRL1_REG_V3 0x302224 +#define SEC_USER1_SMMU_NORMAL_V3 (BIT(23) | BIT(17) | BIT(11) | BIT(5)) +#define SEC_USER1_SMMU_MASK_V3 0xFF79E79E +#define SEC_CORE_INT_STATUS_M_ECC BIT(2) + +#define SEC_PREFETCH_CFG 0x301130 +#define SEC_SVA_TRANS 0x301EC4 +#define SEC_PREFETCH_ENABLE (~(BIT(0) | BIT(1) | BIT(11))) +#define SEC_PREFETCH_DISABLE BIT(1) +#define SEC_SVA_DISABLE_READY (BIT(7) | BIT(11)) +#define SEC_SVA_PREFETCH_INFO 0x301ED4 +#define SEC_SVA_STALL_NUM GENMASK(23, 8) +#define SEC_SVA_PREFETCH_NUM GENMASK(2, 0) +#define SEC_WAIT_SVA_READY 500000 +#define SEC_READ_SVA_STATUS_TIMES 3 +#define SEC_WAIT_US_MIN 10 +#define SEC_WAIT_US_MAX 20 +#define SEC_WAIT_QP_US_MIN 1000 +#define SEC_WAIT_QP_US_MAX 2000 +#define SEC_MAX_WAIT_TIMES 2000 + +#define SEC_DELAY_10_US 10 +#define SEC_POLL_TIMEOUT_US 1000 +#define SEC_DBGFS_VAL_MAX_LEN 20 +#define SEC_SINGLE_PORT_MAX_TRANS 0x2060 + +#define SEC_SQE_MASK_OFFSET 16 +#define SEC_SQE_MASK_LEN 108 +#define SEC_SHAPER_TYPE_RATE 400 + +#define SEC_DFX_BASE 0x301000 +#define SEC_DFX_CORE 0x302100 +#define SEC_DFX_COMMON1 0x301600 +#define SEC_DFX_COMMON2 0x301C00 +#define SEC_DFX_BASE_LEN 0x9D +#define SEC_DFX_CORE_LEN 0x32B +#define SEC_DFX_COMMON1_LEN 0x45 +#define SEC_DFX_COMMON2_LEN 0xBA + +#define SEC_ALG_BITMAP_SHIFT 32 + +#define SEC_CIPHER_BITMAP (GENMASK_ULL(5, 0) | GENMASK_ULL(16, 12) | \ + GENMASK(24, 21)) +#define SEC_DIGEST_BITMAP (GENMASK_ULL(11, 8) | GENMASK_ULL(20, 19) | \ + GENMASK_ULL(42, 25)) +#define SEC_AEAD_BITMAP (GENMASK_ULL(7, 6) | GENMASK_ULL(18, 17) | \ + GENMASK_ULL(45, 43)) + +#define SEC_MAX_CHANNEL_NUM 1 + +struct sec_hw_error { + u32 int_msk; + const char *msg; +}; + +struct sec_dfx_item { + const char *name; + u32 offset; +}; + +static const char sec_name[] = "hisi_sec2"; +static struct dentry *sec_debugfs_root; + +static struct hisi_qm_list sec_devices = { + .register_to_crypto = sec_register_to_crypto, + .unregister_from_crypto = sec_unregister_from_crypto, +}; + +static const struct hisi_qm_cap_info sec_basic_info[] = { + {SEC_QM_NFE_MASK_CAP, 0x3124, 0, GENMASK(31, 0), 0x0, 0x1C77, 0x7C77}, + {SEC_QM_RESET_MASK_CAP, 0x3128, 0, GENMASK(31, 0), 0x0, 0xC77, 0x6C77}, + {SEC_QM_OOO_SHUTDOWN_MASK_CAP, 0x3128, 0, GENMASK(31, 0), 0x0, 0x4, 0x6C77}, + {SEC_QM_CE_MASK_CAP, 0x312C, 0, GENMASK(31, 0), 0x0, 0x8, 0x8}, + {SEC_NFE_MASK_CAP, 0x3130, 0, GENMASK(31, 0), 0x0, 0x177, 0x60177}, + {SEC_RESET_MASK_CAP, 0x3134, 0, GENMASK(31, 0), 0x0, 0x177, 0x177}, + {SEC_OOO_SHUTDOWN_MASK_CAP, 0x3134, 0, GENMASK(31, 0), 0x0, 0x4, 0x177}, + {SEC_CE_MASK_CAP, 0x3138, 0, GENMASK(31, 0), 0x0, 0x88, 0xC088}, + {SEC_CLUSTER_NUM_CAP, 0x313c, 20, GENMASK(3, 0), 0x1, 0x1, 0x1}, + {SEC_CORE_TYPE_NUM_CAP, 0x313c, 16, GENMASK(3, 0), 0x1, 0x1, 0x1}, + {SEC_CORE_NUM_CAP, 0x313c, 8, GENMASK(7, 0), 0x4, 0x4, 0x4}, + {SEC_CORES_PER_CLUSTER_NUM_CAP, 0x313c, 0, GENMASK(7, 0), 0x4, 0x4, 0x4}, + {SEC_CORE_ENABLE_BITMAP, 0x3140, 0, GENMASK(31, 0), 0x17F, 0x17F, 0xF}, + {SEC_DRV_ALG_BITMAP_LOW, 0x3144, 0, GENMASK(31, 0), 0x18050CB, 0x18050CB, 0x18670CF}, + {SEC_DRV_ALG_BITMAP_HIGH, 0x3148, 0, GENMASK(31, 0), 0x395C, 0x395C, 0x395C}, + {SEC_DEV_ALG_BITMAP_LOW, 0x314c, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_DEV_ALG_BITMAP_HIGH, 0x3150, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF}, + {SEC_CORE1_ALG_BITMAP_LOW, 0x3154, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_CORE1_ALG_BITMAP_HIGH, 0x3158, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF}, + {SEC_CORE2_ALG_BITMAP_LOW, 0x315c, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_CORE2_ALG_BITMAP_HIGH, 0x3160, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF}, + {SEC_CORE3_ALG_BITMAP_LOW, 0x3164, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_CORE3_ALG_BITMAP_HIGH, 0x3168, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF}, + {SEC_CORE4_ALG_BITMAP_LOW, 0x316c, 0, GENMASK(31, 0), 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_CORE4_ALG_BITMAP_HIGH, 0x3170, 0, GENMASK(31, 0), 0x3FFF, 0x3FFF, 0x3FFF}, +}; + +static const struct hisi_qm_cap_query_info sec_cap_query_info[] = { + {QM_RAS_NFE_TYPE, "QM_RAS_NFE_TYPE ", 0x3124, 0x0, 0x1C77, 0x7C77}, + {QM_RAS_NFE_RESET, "QM_RAS_NFE_RESET ", 0x3128, 0x0, 0xC77, 0x6C77}, + {QM_RAS_CE_TYPE, "QM_RAS_CE_TYPE ", 0x312C, 0x0, 0x8, 0x8}, + {SEC_RAS_NFE_TYPE, "SEC_RAS_NFE_TYPE ", 0x3130, 0x0, 0x177, 0x60177}, + {SEC_RAS_NFE_RESET, "SEC_RAS_NFE_RESET ", 0x3134, 0x0, 0x177, 0x177}, + {SEC_RAS_CE_TYPE, "SEC_RAS_CE_TYPE ", 0x3138, 0x0, 0x88, 0xC088}, + {SEC_CORE_INFO, "SEC_CORE_INFO ", 0x313c, 0x110404, 0x110404, 0x110404}, + {SEC_CORE_EN, "SEC_CORE_EN ", 0x3140, 0x17F, 0x17F, 0xF}, + {SEC_DRV_ALG_BITMAP_LOW_TB, "SEC_DRV_ALG_BITMAP_LOW ", + 0x3144, 0x18050CB, 0x18050CB, 0x18670CF}, + {SEC_DRV_ALG_BITMAP_HIGH_TB, "SEC_DRV_ALG_BITMAP_HIGH ", + 0x3148, 0x395C, 0x395C, 0x395C}, + {SEC_ALG_BITMAP_LOW, "SEC_ALG_BITMAP_LOW ", + 0x314c, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_ALG_BITMAP_HIGH, "SEC_ALG_BITMAP_HIGH ", 0x3150, 0x3FFF, 0x3FFF, 0x3FFF}, + {SEC_CORE1_BITMAP_LOW, "SEC_CORE1_BITMAP_LOW ", + 0x3154, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_CORE1_BITMAP_HIGH, "SEC_CORE1_BITMAP_HIGH ", 0x3158, 0x3FFF, 0x3FFF, 0x3FFF}, + {SEC_CORE2_BITMAP_LOW, "SEC_CORE2_BITMAP_LOW ", + 0x315c, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_CORE2_BITMAP_HIGH, "SEC_CORE2_BITMAP_HIGH ", 0x3160, 0x3FFF, 0x3FFF, 0x3FFF}, + {SEC_CORE3_BITMAP_LOW, "SEC_CORE3_BITMAP_LOW ", + 0x3164, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_CORE3_BITMAP_HIGH, "SEC_CORE3_BITMAP_HIGH ", 0x3168, 0x3FFF, 0x3FFF, 0x3FFF}, + {SEC_CORE4_BITMAP_LOW, "SEC_CORE4_BITMAP_LOW ", + 0x316c, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF}, + {SEC_CORE4_BITMAP_HIGH, "SEC_CORE4_BITMAP_HIGH ", 0x3170, 0x3FFF, 0x3FFF, 0x3FFF}, +}; + +static const struct qm_dev_alg sec_dev_algs[] = { { + .alg_msk = SEC_CIPHER_BITMAP, + .alg = "cipher\n", + }, { + .alg_msk = SEC_DIGEST_BITMAP, + .alg = "digest\n", + }, { + .alg_msk = SEC_AEAD_BITMAP, + .alg = "aead\n", + }, +}; + +static const struct sec_hw_error sec_hw_errors[] = { + { + .int_msk = BIT(0), + .msg = "sec_axi_rresp_err_rint" + }, + { + .int_msk = BIT(1), + .msg = "sec_axi_bresp_err_rint" + }, + { + .int_msk = BIT(2), + .msg = "sec_ecc_2bit_err_rint" + }, + { + .int_msk = BIT(3), + .msg = "sec_ecc_1bit_err_rint" + }, + { + .int_msk = BIT(4), + .msg = "sec_req_trng_timeout_rint" + }, + { + .int_msk = BIT(5), + .msg = "sec_fsm_hbeat_rint" + }, + { + .int_msk = BIT(6), + .msg = "sec_channel_req_rng_timeout_rint" + }, + { + .int_msk = BIT(7), + .msg = "sec_bd_err_rint" + }, + { + .int_msk = BIT(8), + .msg = "sec_chain_buff_err_rint" + }, + { + .int_msk = BIT(14), + .msg = "sec_no_secure_access" + }, + { + .int_msk = BIT(15), + .msg = "sec_wrapping_key_auth_err" + }, + { + .int_msk = BIT(16), + .msg = "sec_km_key_crc_fail" + }, + { + .int_msk = BIT(17), + .msg = "sec_axi_poison_err" + }, + { + .int_msk = BIT(18), + .msg = "sec_sva_err" + }, + {} +}; + +static const char * const sec_dbg_file_name[] = { + [SEC_CLEAR_ENABLE] = "clear_enable", +}; + +static struct sec_dfx_item sec_dfx_labels[] = { + {"send_cnt", offsetof(struct sec_dfx, send_cnt)}, + {"recv_cnt", offsetof(struct sec_dfx, recv_cnt)}, + {"send_busy_cnt", offsetof(struct sec_dfx, send_busy_cnt)}, + {"recv_busy_cnt", offsetof(struct sec_dfx, recv_busy_cnt)}, + {"err_bd_cnt", offsetof(struct sec_dfx, err_bd_cnt)}, + {"invalid_req_cnt", offsetof(struct sec_dfx, invalid_req_cnt)}, + {"done_flag_cnt", offsetof(struct sec_dfx, done_flag_cnt)}, +}; + +static const struct debugfs_reg32 sec_dfx_regs[] = { + {"SEC_PF_ABNORMAL_INT_SOURCE ", 0x301010}, + {"SEC_SAA_EN ", 0x301270}, + {"SEC_BD_LATENCY_MIN ", 0x301600}, + {"SEC_BD_LATENCY_MAX ", 0x301608}, + {"SEC_BD_LATENCY_AVG ", 0x30160C}, + {"SEC_BD_NUM_IN_SAA0 ", 0x301670}, + {"SEC_BD_NUM_IN_SAA1 ", 0x301674}, + {"SEC_BD_NUM_IN_SEC ", 0x301680}, + {"SEC_ECC_1BIT_CNT ", 0x301C00}, + {"SEC_ECC_1BIT_INFO ", 0x301C04}, + {"SEC_ECC_2BIT_CNT ", 0x301C10}, + {"SEC_ECC_2BIT_INFO ", 0x301C14}, + {"SEC_BD_SAA0 ", 0x301C20}, + {"SEC_BD_SAA1 ", 0x301C24}, + {"SEC_BD_SAA2 ", 0x301C28}, + {"SEC_BD_SAA3 ", 0x301C2C}, + {"SEC_BD_SAA4 ", 0x301C30}, + {"SEC_BD_SAA5 ", 0x301C34}, + {"SEC_BD_SAA6 ", 0x301C38}, + {"SEC_BD_SAA7 ", 0x301C3C}, + {"SEC_BD_SAA8 ", 0x301C40}, + {"SEC_RAS_CE_ENABLE ", 0x301050}, + {"SEC_RAS_FE_ENABLE ", 0x301054}, + {"SEC_RAS_NFE_ENABLE ", 0x301058}, + {"SEC_REQ_TRNG_TIME_TH ", 0x30112C}, + {"SEC_CHANNEL_RNG_REQ_THLD ", 0x302110}, +}; + +/* define the SEC's dfx regs region and region length */ +static struct dfx_diff_registers sec_diff_regs[] = { + { + .reg_offset = SEC_DFX_BASE, + .reg_len = SEC_DFX_BASE_LEN, + }, { + .reg_offset = SEC_DFX_COMMON1, + .reg_len = SEC_DFX_COMMON1_LEN, + }, { + .reg_offset = SEC_DFX_COMMON2, + .reg_len = SEC_DFX_COMMON2_LEN, + }, { + .reg_offset = SEC_DFX_CORE, + .reg_len = SEC_DFX_CORE_LEN, + }, +}; + +static int sec_diff_regs_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + + hisi_qm_acc_diff_regs_dump(qm, s, qm->debug.acc_diff_regs, + ARRAY_SIZE(sec_diff_regs)); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(sec_diff_regs); + +static bool pf_q_num_flag; +static int sec_pf_q_num_set(const char *val, const struct kernel_param *kp) +{ + pf_q_num_flag = true; + + return hisi_qm_q_num_set(val, kp, PCI_DEVICE_ID_HUAWEI_SEC_PF); +} + +static const struct kernel_param_ops sec_pf_q_num_ops = { + .set = sec_pf_q_num_set, + .get = param_get_int, +}; + +static u32 pf_q_num = SEC_PF_DEF_Q_NUM; +module_param_cb(pf_q_num, &sec_pf_q_num_ops, &pf_q_num, 0444); +MODULE_PARM_DESC(pf_q_num, "Number of queues in PF(v1 2-4096, v2 2-1024)"); + +static int sec_ctx_q_num_set(const char *val, const struct kernel_param *kp) +{ + u32 ctx_q_num; + int ret; + + if (!val) + return -EINVAL; + + ret = kstrtou32(val, 10, &ctx_q_num); + if (ret) + return -EINVAL; + + if (!ctx_q_num || ctx_q_num > SEC_CTX_Q_NUM_MAX || ctx_q_num & 0x1) { + pr_err("ctx queue num[%u] is invalid!\n", ctx_q_num); + return -EINVAL; + } + + return param_set_int(val, kp); +} + +static const struct kernel_param_ops sec_ctx_q_num_ops = { + .set = sec_ctx_q_num_set, + .get = param_get_int, +}; +static u32 ctx_q_num = SEC_CTX_Q_NUM_DEF; +module_param_cb(ctx_q_num, &sec_ctx_q_num_ops, &ctx_q_num, 0444); +MODULE_PARM_DESC(ctx_q_num, "Queue num in ctx (2 default, 2, 4, ..., 32)"); + +static const struct kernel_param_ops vfs_num_ops = { + .set = vfs_num_set, + .get = param_get_int, +}; + +static u32 vfs_num; +module_param_cb(vfs_num, &vfs_num_ops, &vfs_num, 0444); +MODULE_PARM_DESC(vfs_num, "Number of VFs to enable(1-63), 0(default)"); + +void sec_destroy_qps(struct hisi_qp **qps, int qp_num) +{ + hisi_qm_free_qps(qps, qp_num); + kfree(qps); +} + +struct hisi_qp **sec_create_qps(void) +{ + int node = cpu_to_node(raw_smp_processor_id()); + u32 ctx_num = ctx_q_num; + struct hisi_qp **qps; + u8 *type; + int ret; + + qps = kzalloc_objs(struct hisi_qp *, ctx_num); + if (!qps) + return NULL; + + /* The type of SEC is all 0, so just allocated by kcalloc */ + type = kcalloc(ctx_num, sizeof(u8), GFP_KERNEL); + if (!type) { + kfree(qps); + return NULL; + } + + ret = hisi_qm_alloc_qps_node(&sec_devices, ctx_num, type, node, qps); + if (ret) { + kfree(type); + kfree(qps); + return NULL; + } + + kfree(type); + return qps; +} + +u64 sec_get_alg_bitmap(struct hisi_qm *qm, u32 high, u32 low) +{ + u32 cap_val_h, cap_val_l; + + cap_val_h = qm->cap_tables.dev_cap_table[high].cap_val; + cap_val_l = qm->cap_tables.dev_cap_table[low].cap_val; + + return ((u64)cap_val_h << SEC_ALG_BITMAP_SHIFT) | (u64)cap_val_l; +} + +static const struct kernel_param_ops sec_uacce_mode_ops = { + .set = uacce_mode_set, + .get = param_get_int, +}; + +/* + * uacce_mode = 0 means sec only register to crypto, + * uacce_mode = 1 means sec both register to crypto and uacce. + */ +static u32 uacce_mode = UACCE_MODE_NOUACCE; +module_param_cb(uacce_mode, &sec_uacce_mode_ops, &uacce_mode, 0444); +MODULE_PARM_DESC(uacce_mode, UACCE_MODE_DESC); + +static const struct pci_device_id sec_dev_ids[] = { + { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HUAWEI_SEC_PF) }, + { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HUAWEI_SEC_VF) }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, sec_dev_ids); + +static void sec_set_endian(struct hisi_qm *qm) +{ + u32 reg; + + reg = readl_relaxed(qm->io_base + SEC_CONTROL_REG); + reg &= ~(BIT(1) | BIT(0)); + if (!IS_ENABLED(CONFIG_64BIT)) + reg |= BIT(1); + + if (!IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN)) + reg |= BIT(0); + + writel_relaxed(reg, qm->io_base + SEC_CONTROL_REG); +} + +static int sec_wait_sva_ready(struct hisi_qm *qm, __u32 offset, __u32 mask) +{ + u32 val, try_times = 0; + u8 count = 0; + + /* + * Read the register value every 10-20us. If the value is 0 for three + * consecutive times, the SVA module is ready. + */ + do { + val = readl(qm->io_base + offset); + if (val & mask) + count = 0; + else if (++count == SEC_READ_SVA_STATUS_TIMES) + break; + + usleep_range(SEC_WAIT_US_MIN, SEC_WAIT_US_MAX); + } while (++try_times < SEC_WAIT_SVA_READY); + + if (try_times == SEC_WAIT_SVA_READY) { + pci_err(qm->pdev, "failed to wait sva prefetch ready\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static void sec_close_sva_prefetch(struct hisi_qm *qm) +{ + u32 val; + int ret; + + if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps)) + return; + + val = readl_relaxed(qm->io_base + SEC_PREFETCH_CFG); + val |= SEC_PREFETCH_DISABLE; + writel(val, qm->io_base + SEC_PREFETCH_CFG); + + ret = readl_relaxed_poll_timeout(qm->io_base + SEC_SVA_TRANS, + val, !(val & SEC_SVA_DISABLE_READY), + SEC_DELAY_10_US, SEC_POLL_TIMEOUT_US); + if (ret) + pci_err(qm->pdev, "failed to close sva prefetch\n"); + + (void)sec_wait_sva_ready(qm, SEC_SVA_PREFETCH_INFO, SEC_SVA_STALL_NUM); +} + +static void sec_open_sva_prefetch(struct hisi_qm *qm) +{ + u32 val; + int ret; + + if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps)) + return; + + /* Enable prefetch */ + val = readl_relaxed(qm->io_base + SEC_PREFETCH_CFG); + val &= SEC_PREFETCH_ENABLE; + writel(val, qm->io_base + SEC_PREFETCH_CFG); + + ret = readl_relaxed_poll_timeout(qm->io_base + SEC_PREFETCH_CFG, + val, !(val & SEC_PREFETCH_DISABLE), + SEC_DELAY_10_US, SEC_POLL_TIMEOUT_US); + if (ret) { + pci_err(qm->pdev, "failed to open sva prefetch\n"); + sec_close_sva_prefetch(qm); + return; + } + + ret = sec_wait_sva_ready(qm, SEC_SVA_TRANS, SEC_SVA_PREFETCH_NUM); + if (ret) + sec_close_sva_prefetch(qm); +} + +static void sec_engine_sva_config(struct hisi_qm *qm) +{ + u32 reg; + + if (qm->ver > QM_HW_V2) { + reg = readl_relaxed(qm->io_base + + SEC_INTERFACE_USER_CTRL0_REG_V3); + reg |= SEC_USER0_SMMU_NORMAL; + writel_relaxed(reg, qm->io_base + + SEC_INTERFACE_USER_CTRL0_REG_V3); + + reg = readl_relaxed(qm->io_base + + SEC_INTERFACE_USER_CTRL1_REG_V3); + reg &= SEC_USER1_SMMU_MASK_V3; + reg |= SEC_USER1_SMMU_NORMAL_V3; + writel_relaxed(reg, qm->io_base + + SEC_INTERFACE_USER_CTRL1_REG_V3); + } else { + reg = readl_relaxed(qm->io_base + + SEC_INTERFACE_USER_CTRL0_REG); + reg |= SEC_USER0_SMMU_NORMAL; + writel_relaxed(reg, qm->io_base + + SEC_INTERFACE_USER_CTRL0_REG); + reg = readl_relaxed(qm->io_base + + SEC_INTERFACE_USER_CTRL1_REG); + reg &= SEC_USER1_SMMU_MASK; + if (qm->use_sva) + reg |= SEC_USER1_SMMU_SVA; + else + reg |= SEC_USER1_SMMU_NORMAL; + writel_relaxed(reg, qm->io_base + + SEC_INTERFACE_USER_CTRL1_REG); + } + sec_open_sva_prefetch(qm); +} + +static void sec_enable_clock_gate(struct hisi_qm *qm) +{ + u32 val; + + if (qm->ver < QM_HW_V3) + return; + + val = readl_relaxed(qm->io_base + SEC_CONTROL_REG); + val |= SEC_CLK_GATE_ENABLE; + writel_relaxed(val, qm->io_base + SEC_CONTROL_REG); + + val = readl(qm->io_base + SEC_DYNAMIC_GATE_REG); + val |= SEC_DYNAMIC_GATE_EN; + writel(val, qm->io_base + SEC_DYNAMIC_GATE_REG); + + val = readl(qm->io_base + SEC_CORE_AUTO_GATE); + val |= SEC_CORE_AUTO_GATE_EN; + writel(val, qm->io_base + SEC_CORE_AUTO_GATE); +} + +static void sec_disable_clock_gate(struct hisi_qm *qm) +{ + u32 val; + + /* Kunpeng920 needs to close clock gating */ + val = readl_relaxed(qm->io_base + SEC_CONTROL_REG); + val &= SEC_CLK_GATE_DISABLE; + writel_relaxed(val, qm->io_base + SEC_CONTROL_REG); +} + +static int sec_engine_init(struct hisi_qm *qm) +{ + int ret; + u32 reg; + + /* disable clock gate control before mem init */ + sec_disable_clock_gate(qm); + + writel_relaxed(0x1, qm->io_base + SEC_MEM_START_INIT_REG); + + ret = readl_relaxed_poll_timeout(qm->io_base + SEC_MEM_INIT_DONE_REG, + reg, reg & 0x1, SEC_DELAY_10_US, + SEC_POLL_TIMEOUT_US); + if (ret) { + pci_err(qm->pdev, "fail to init sec mem\n"); + return ret; + } + + reg = readl_relaxed(qm->io_base + SEC_CONTROL_REG); + reg |= (0x1 << SEC_TRNG_EN_SHIFT); + writel_relaxed(reg, qm->io_base + SEC_CONTROL_REG); + + sec_engine_sva_config(qm); + + writel(SEC_SINGLE_PORT_MAX_TRANS, + qm->io_base + AM_CFG_SINGLE_PORT_MAX_TRANS); + + reg = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_CORE_ENABLE_BITMAP, qm->cap_ver); + writel(reg, qm->io_base + SEC_SAA_EN_REG); + + if (qm->ver < QM_HW_V3) { + /* HW V2 enable sm4 extra mode, as ctr/ecb */ + writel_relaxed(SEC_BD_ERR_CHK_EN0, + qm->io_base + SEC_BD_ERR_CHK_EN_REG0); + + /* HW V2 enable sm4 xts mode multiple iv */ + writel_relaxed(SEC_BD_ERR_CHK_EN1, + qm->io_base + SEC_BD_ERR_CHK_EN_REG1); + writel_relaxed(SEC_BD_ERR_CHK_EN3, + qm->io_base + SEC_BD_ERR_CHK_EN_REG3); + } + + /* config endian */ + sec_set_endian(qm); + + sec_enable_clock_gate(qm); + + return 0; +} + +static int sec_set_user_domain_and_cache(struct hisi_qm *qm) +{ + /* qm user domain */ + writel(AXUSER_BASE, qm->io_base + QM_ARUSER_M_CFG_1); + writel(ARUSER_M_CFG_ENABLE, qm->io_base + QM_ARUSER_M_CFG_ENABLE); + writel(AXUSER_BASE, qm->io_base + QM_AWUSER_M_CFG_1); + writel(AWUSER_M_CFG_ENABLE, qm->io_base + QM_AWUSER_M_CFG_ENABLE); + writel(WUSER_M_CFG_ENABLE, qm->io_base + QM_WUSER_M_CFG_ENABLE); + + /* qm cache */ + writel(AXI_M_CFG, qm->io_base + QM_AXI_M_CFG); + writel(AXI_M_CFG_ENABLE, qm->io_base + QM_AXI_M_CFG_ENABLE); + + /* disable FLR triggered by BME(bus master enable) */ + writel(PEH_AXUSER_CFG, qm->io_base + QM_PEH_AXUSER_CFG); + writel(PEH_AXUSER_CFG_ENABLE, qm->io_base + QM_PEH_AXUSER_CFG_ENABLE); + + /* enable sqc,cqc writeback */ + writel(SQC_CACHE_ENABLE | CQC_CACHE_ENABLE | SQC_CACHE_WB_ENABLE | + CQC_CACHE_WB_ENABLE | FIELD_PREP(SQC_CACHE_WB_THRD, 1) | + FIELD_PREP(CQC_CACHE_WB_THRD, 1), qm->io_base + QM_CACHE_CTL); + + return sec_engine_init(qm); +} + +/* sec_debug_regs_clear() - clear the sec debug regs */ +static void sec_debug_regs_clear(struct hisi_qm *qm) +{ + int i; + + /* clear sec dfx regs */ + writel(0x1, qm->io_base + SEC_CTRL_CNT_CLR_CE); + for (i = 0; i < ARRAY_SIZE(sec_dfx_regs); i++) + readl(qm->io_base + sec_dfx_regs[i].offset); + + /* clear rdclr_en */ + writel(0x0, qm->io_base + SEC_CTRL_CNT_CLR_CE); + + hisi_qm_debug_regs_clear(qm); +} + +static void sec_master_ooo_ctrl(struct hisi_qm *qm, bool enable) +{ + u32 val1, val2; + + val1 = readl(qm->io_base + SEC_CONTROL_REG); + if (enable) { + val1 |= SEC_AXI_SHUTDOWN_ENABLE; + val2 = qm->err_info.dev_err.shutdown_mask; + } else { + val1 &= SEC_AXI_SHUTDOWN_DISABLE; + val2 = 0x0; + } + + if (qm->ver > QM_HW_V2) + writel(val2, qm->io_base + SEC_OOO_SHUTDOWN_SEL); + + writel(val1, qm->io_base + SEC_CONTROL_REG); +} + +static void sec_hw_error_enable(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *dev_err = &qm->err_info.dev_err; + u32 err_mask = dev_err->ce | dev_err->nfe | dev_err->fe; + + if (qm->ver == QM_HW_V1) { + writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_MASK); + pci_info(qm->pdev, "V1 not support hw error handle\n"); + return; + } + + /* clear SEC hw error source if having */ + writel(SEC_RAS_CLEAR_ALL, qm->io_base + SEC_CORE_INT_SOURCE); + + /* enable RAS int */ + writel(dev_err->ce, qm->io_base + SEC_RAS_CE_REG); + writel(dev_err->fe, qm->io_base + SEC_RAS_FE_REG); + writel(dev_err->nfe, qm->io_base + SEC_RAS_NFE_REG); + + /* enable SEC block master OOO when nfe occurs on Kunpeng930 */ + sec_master_ooo_ctrl(qm, true); + + /* enable SEC hw error interrupts */ + writel(err_mask, qm->io_base + SEC_CORE_INT_MASK); +} + +static void sec_hw_error_disable(struct hisi_qm *qm) +{ + /* disable SEC hw error interrupts */ + writel(SEC_CORE_INT_DISABLE, qm->io_base + SEC_CORE_INT_MASK); + + /* disable SEC block master OOO when nfe occurs on Kunpeng930 */ + sec_master_ooo_ctrl(qm, false); + + /* disable RAS int */ + writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_CE_REG); + writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_FE_REG); + writel(SEC_RAS_DISABLE, qm->io_base + SEC_RAS_NFE_REG); +} + +static u32 sec_clear_enable_read(struct hisi_qm *qm) +{ + return readl(qm->io_base + SEC_CTRL_CNT_CLR_CE) & + SEC_CTRL_CNT_CLR_CE_BIT; +} + +static int sec_clear_enable_write(struct hisi_qm *qm, u32 val) +{ + u32 tmp; + + if (val != 1 && val) + return -EINVAL; + + tmp = (readl(qm->io_base + SEC_CTRL_CNT_CLR_CE) & + ~SEC_CTRL_CNT_CLR_CE_BIT) | val; + writel(tmp, qm->io_base + SEC_CTRL_CNT_CLR_CE); + + return 0; +} + +static ssize_t sec_debug_read(struct file *filp, char __user *buf, + size_t count, loff_t *pos) +{ + struct sec_debug_file *file = filp->private_data; + char tbuf[SEC_DBGFS_VAL_MAX_LEN]; + struct hisi_qm *qm = file->qm; + u32 val; + int ret; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + spin_lock_irq(&file->lock); + + switch (file->index) { + case SEC_CLEAR_ENABLE: + val = sec_clear_enable_read(qm); + break; + default: + goto err_input; + } + + spin_unlock_irq(&file->lock); + + hisi_qm_put_dfx_access(qm); + ret = snprintf(tbuf, SEC_DBGFS_VAL_MAX_LEN, "%u\n", val); + return simple_read_from_buffer(buf, count, pos, tbuf, ret); + +err_input: + spin_unlock_irq(&file->lock); + hisi_qm_put_dfx_access(qm); + return -EINVAL; +} + +static ssize_t sec_debug_write(struct file *filp, const char __user *buf, + size_t count, loff_t *pos) +{ + struct sec_debug_file *file = filp->private_data; + char tbuf[SEC_DBGFS_VAL_MAX_LEN]; + struct hisi_qm *qm = file->qm; + unsigned long val; + int len, ret; + + if (*pos != 0) + return 0; + + if (count >= SEC_DBGFS_VAL_MAX_LEN) + return -ENOSPC; + + len = simple_write_to_buffer(tbuf, SEC_DBGFS_VAL_MAX_LEN - 1, + pos, buf, count); + if (len < 0) + return len; + + tbuf[len] = '\0'; + if (kstrtoul(tbuf, 0, &val)) + return -EFAULT; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + spin_lock_irq(&file->lock); + + switch (file->index) { + case SEC_CLEAR_ENABLE: + ret = sec_clear_enable_write(qm, val); + if (ret) + goto err_input; + break; + default: + ret = -EINVAL; + goto err_input; + } + + ret = count; + + err_input: + spin_unlock_irq(&file->lock); + hisi_qm_put_dfx_access(qm); + return ret; +} + +static const struct file_operations sec_dbg_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = sec_debug_read, + .write = sec_debug_write, +}; + +static int sec_debugfs_atomic64_get(void *data, u64 *val) +{ + *val = atomic64_read((atomic64_t *)data); + + return 0; +} + +static int sec_debugfs_atomic64_set(void *data, u64 val) +{ + if (val) + return -EINVAL; + + atomic64_set((atomic64_t *)data, 0); + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(sec_atomic64_ops, sec_debugfs_atomic64_get, + sec_debugfs_atomic64_set, "%llu\n"); + +static int sec_regs_show(struct seq_file *s, void *unused) +{ + hisi_qm_regs_dump(s, s->private); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(sec_regs); + +static int sec_cap_regs_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + u32 i, size; + + size = qm->cap_tables.qm_cap_size; + for (i = 0; i < size; i++) + seq_printf(s, "%s= 0x%08x\n", qm->cap_tables.qm_cap_table[i].name, + qm->cap_tables.qm_cap_table[i].cap_val); + + size = qm->cap_tables.dev_cap_size; + for (i = 0; i < size; i++) + seq_printf(s, "%s= 0x%08x\n", qm->cap_tables.dev_cap_table[i].name, + qm->cap_tables.dev_cap_table[i].cap_val); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(sec_cap_regs); + +static int sec_core_debug_init(struct hisi_qm *qm) +{ + struct dfx_diff_registers *sec_regs = qm->debug.acc_diff_regs; + struct sec_dev *sec = container_of(qm, struct sec_dev, qm); + struct device *dev = &qm->pdev->dev; + struct sec_dfx *dfx = &sec->debug.dfx; + struct debugfs_regset32 *regset; + struct dentry *tmp_d; + int i; + + tmp_d = debugfs_create_dir("sec_dfx", qm->debug.debug_root); + + regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL); + if (!regset) + return -ENOMEM; + + regset->regs = sec_dfx_regs; + regset->nregs = ARRAY_SIZE(sec_dfx_regs); + regset->base = qm->io_base; + regset->dev = dev; + + if (qm->pdev->device == PCI_DEVICE_ID_HUAWEI_SEC_PF) + debugfs_create_file("regs", 0444, tmp_d, regset, &sec_regs_fops); + if (qm->fun_type == QM_HW_PF && sec_regs) + debugfs_create_file("diff_regs", 0444, tmp_d, + qm, &sec_diff_regs_fops); + + for (i = 0; i < ARRAY_SIZE(sec_dfx_labels); i++) { + atomic64_t *data = (atomic64_t *)((uintptr_t)dfx + + sec_dfx_labels[i].offset); + debugfs_create_file(sec_dfx_labels[i].name, 0644, + tmp_d, data, &sec_atomic64_ops); + } + + debugfs_create_file("cap_regs", CAP_FILE_PERMISSION, + qm->debug.debug_root, qm, &sec_cap_regs_fops); + + return 0; +} + +static int sec_debug_init(struct hisi_qm *qm) +{ + struct sec_dev *sec = container_of(qm, struct sec_dev, qm); + int i; + + if (qm->pdev->device == PCI_DEVICE_ID_HUAWEI_SEC_PF) { + for (i = SEC_CLEAR_ENABLE; i < SEC_DEBUG_FILE_NUM; i++) { + spin_lock_init(&sec->debug.files[i].lock); + sec->debug.files[i].index = i; + sec->debug.files[i].qm = qm; + + debugfs_create_file(sec_dbg_file_name[i], 0600, + qm->debug.debug_root, + sec->debug.files + i, + &sec_dbg_fops); + } + } + + return sec_core_debug_init(qm); +} + +static int sec_debugfs_init(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + ret = hisi_qm_regs_debugfs_init(qm, sec_diff_regs, ARRAY_SIZE(sec_diff_regs)); + if (ret) { + dev_warn(dev, "Failed to init SEC diff regs!\n"); + return ret; + } + + qm->debug.debug_root = debugfs_create_dir(dev_name(dev), + sec_debugfs_root); + qm->debug.sqe_mask_offset = SEC_SQE_MASK_OFFSET; + qm->debug.sqe_mask_len = SEC_SQE_MASK_LEN; + + hisi_qm_debug_init(qm); + + ret = sec_debug_init(qm); + if (ret) + goto debugfs_remove; + + return 0; + +debugfs_remove: + debugfs_remove_recursive(qm->debug.debug_root); + hisi_qm_regs_debugfs_uninit(qm, ARRAY_SIZE(sec_diff_regs)); + return ret; +} + +static void sec_debugfs_exit(struct hisi_qm *qm) +{ + debugfs_remove_recursive(qm->debug.debug_root); + + hisi_qm_regs_debugfs_uninit(qm, ARRAY_SIZE(sec_diff_regs)); +} + +static int sec_show_last_regs_init(struct hisi_qm *qm) +{ + struct qm_debug *debug = &qm->debug; + int i; + + debug->last_words = kcalloc(ARRAY_SIZE(sec_dfx_regs), + sizeof(unsigned int), GFP_KERNEL); + if (!debug->last_words) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(sec_dfx_regs); i++) + debug->last_words[i] = readl_relaxed(qm->io_base + + sec_dfx_regs[i].offset); + + return 0; +} + +static void sec_show_last_regs_uninit(struct hisi_qm *qm) +{ + struct qm_debug *debug = &qm->debug; + + if (qm->fun_type == QM_HW_VF || !debug->last_words) + return; + + kfree(debug->last_words); + debug->last_words = NULL; +} + +static void sec_show_last_dfx_regs(struct hisi_qm *qm) +{ + struct qm_debug *debug = &qm->debug; + struct pci_dev *pdev = qm->pdev; + u32 val; + int i; + + if (qm->fun_type == QM_HW_VF || !debug->last_words) + return; + + /* dumps last word of the debugging registers during controller reset */ + for (i = 0; i < ARRAY_SIZE(sec_dfx_regs); i++) { + val = readl_relaxed(qm->io_base + sec_dfx_regs[i].offset); + if (val != debug->last_words[i]) + pci_info(pdev, "%s \t= 0x%08x => 0x%08x\n", + sec_dfx_regs[i].name, debug->last_words[i], val); + } +} + +static void sec_log_hw_error(struct hisi_qm *qm, u32 err_sts) +{ + const struct sec_hw_error *errs = sec_hw_errors; + struct device *dev = &qm->pdev->dev; + u32 err_val; + + while (errs->msg) { + if (errs->int_msk & err_sts) { + dev_err(dev, "%s [error status=0x%x] found\n", + errs->msg, errs->int_msk); + + if (SEC_CORE_INT_STATUS_M_ECC & errs->int_msk) { + err_val = readl(qm->io_base + + SEC_CORE_SRAM_ECC_ERR_INFO); + dev_err(dev, "multi ecc sram num=0x%x\n", + ((err_val) >> SEC_ECC_NUM) & + SEC_ECC_MASH); + } + } + errs++; + } +} + +static u32 sec_get_hw_err_status(struct hisi_qm *qm) +{ + return readl(qm->io_base + SEC_CORE_INT_STATUS); +} + +static void sec_clear_hw_err_status(struct hisi_qm *qm, u32 err_sts) +{ + writel(err_sts, qm->io_base + SEC_CORE_INT_SOURCE); +} + +static void sec_disable_error_report(struct hisi_qm *qm, u32 err_type) +{ + u32 nfe_mask = qm->err_info.dev_err.nfe; + + writel(nfe_mask & (~err_type), qm->io_base + SEC_RAS_NFE_REG); +} + +static void sec_enable_error_report(struct hisi_qm *qm) +{ + u32 nfe_mask = qm->err_info.dev_err.nfe; + u32 ce_mask = qm->err_info.dev_err.ce; + + writel(nfe_mask, qm->io_base + SEC_RAS_NFE_REG); + writel(ce_mask, qm->io_base + SEC_RAS_CE_REG); +} + +static void sec_open_axi_master_ooo(struct hisi_qm *qm) +{ + u32 val; + + val = readl(qm->io_base + SEC_CONTROL_REG); + writel(val & SEC_AXI_SHUTDOWN_DISABLE, qm->io_base + SEC_CONTROL_REG); + writel(val | SEC_AXI_SHUTDOWN_ENABLE, qm->io_base + SEC_CONTROL_REG); +} + +static enum acc_err_result sec_get_err_result(struct hisi_qm *qm) +{ + u32 err_status; + + err_status = sec_get_hw_err_status(qm); + if (err_status) { + if (err_status & qm->err_info.dev_err.ecc_2bits_mask) + qm->err_status.is_dev_ecc_mbit = true; + sec_log_hw_error(qm, err_status); + + if (err_status & qm->err_info.dev_err.reset_mask) { + /* Disable the same error reporting until device is recovered. */ + sec_disable_error_report(qm, err_status); + return ACC_ERR_NEED_RESET; + } + sec_clear_hw_err_status(qm, err_status); + /* Avoid firmware disable error report, re-enable. */ + sec_enable_error_report(qm); + } + + return ACC_ERR_RECOVERED; +} + +static bool sec_dev_is_abnormal(struct hisi_qm *qm) +{ + u32 err_status; + + err_status = sec_get_hw_err_status(qm); + if (err_status & qm->err_info.dev_err.shutdown_mask) + return true; + + return false; +} + +static void sec_disable_axi_error(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *dev_err = &qm->err_info.dev_err; + u32 err_mask = dev_err->ce | dev_err->nfe | dev_err->fe; + + writel(err_mask & ~SEC_AXI_ERROR_MASK, qm->io_base + SEC_CORE_INT_MASK); + + if (qm->ver > QM_HW_V2) + writel(dev_err->shutdown_mask & (~SEC_AXI_ERROR_MASK), + qm->io_base + SEC_OOO_SHUTDOWN_SEL); +} + +static void sec_enable_axi_error(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *dev_err = &qm->err_info.dev_err; + u32 err_mask = dev_err->ce | dev_err->nfe | dev_err->fe; + + /* clear axi error source */ + writel(SEC_AXI_ERROR_MASK, qm->io_base + SEC_CORE_INT_SOURCE); + + writel(err_mask, qm->io_base + SEC_CORE_INT_MASK); + + if (qm->ver > QM_HW_V2) + writel(dev_err->shutdown_mask, qm->io_base + SEC_OOO_SHUTDOWN_SEL); +} + +static void sec_err_info_init(struct hisi_qm *qm) +{ + struct hisi_qm_err_info *err_info = &qm->err_info; + struct hisi_qm_err_mask *qm_err = &err_info->qm_err; + struct hisi_qm_err_mask *dev_err = &err_info->dev_err; + + qm_err->fe = SEC_RAS_FE_ENB_MSK; + qm_err->ce = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_QM_CE_MASK_CAP, qm->cap_ver); + qm_err->nfe = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_QM_NFE_MASK_CAP, qm->cap_ver); + qm_err->shutdown_mask = hisi_qm_get_hw_info(qm, sec_basic_info, + SEC_QM_OOO_SHUTDOWN_MASK_CAP, qm->cap_ver); + qm_err->reset_mask = hisi_qm_get_hw_info(qm, sec_basic_info, + SEC_QM_RESET_MASK_CAP, qm->cap_ver); + qm_err->ecc_2bits_mask = QM_ECC_MBIT; + + dev_err->fe = SEC_RAS_FE_ENB_MSK; + dev_err->ce = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_CE_MASK_CAP, qm->cap_ver); + dev_err->nfe = hisi_qm_get_hw_info(qm, sec_basic_info, SEC_NFE_MASK_CAP, qm->cap_ver); + dev_err->shutdown_mask = hisi_qm_get_hw_info(qm, sec_basic_info, + SEC_OOO_SHUTDOWN_MASK_CAP, qm->cap_ver); + dev_err->reset_mask = hisi_qm_get_hw_info(qm, sec_basic_info, + SEC_RESET_MASK_CAP, qm->cap_ver); + dev_err->ecc_2bits_mask = SEC_CORE_INT_STATUS_M_ECC; + + err_info->msi_wr_port = BIT(0); + err_info->acpi_rst = "SRST"; +} + +static const struct hisi_qm_err_ini sec_err_ini = { + .hw_init = sec_set_user_domain_and_cache, + .hw_err_enable = sec_hw_error_enable, + .hw_err_disable = sec_hw_error_disable, + .get_dev_hw_err_status = sec_get_hw_err_status, + .clear_dev_hw_err_status = sec_clear_hw_err_status, + .open_axi_master_ooo = sec_open_axi_master_ooo, + .open_sva_prefetch = sec_open_sva_prefetch, + .close_sva_prefetch = sec_close_sva_prefetch, + .show_last_dfx_regs = sec_show_last_dfx_regs, + .err_info_init = sec_err_info_init, + .get_err_result = sec_get_err_result, + .dev_is_abnormal = sec_dev_is_abnormal, + .disable_axi_error = sec_disable_axi_error, + .enable_axi_error = sec_enable_axi_error, +}; + +static int sec_pf_probe_init(struct sec_dev *sec) +{ + struct hisi_qm *qm = &sec->qm; + int ret; + + ret = sec_set_user_domain_and_cache(qm); + if (ret) + return ret; + + hisi_qm_dev_err_init(qm); + sec_debug_regs_clear(qm); + ret = sec_show_last_regs_init(qm); + if (ret) + pci_err(qm->pdev, "Failed to init last word regs!\n"); + + return ret; +} + +static int sec_pre_store_cap_reg(struct hisi_qm *qm) +{ + struct hisi_qm_cap_record *sec_cap; + struct pci_dev *pdev = qm->pdev; + size_t i, size; + + size = ARRAY_SIZE(sec_cap_query_info); + sec_cap = devm_kcalloc(&pdev->dev, size, sizeof(*sec_cap), GFP_KERNEL); + if (!sec_cap) + return -ENOMEM; + + for (i = 0; i < size; i++) { + sec_cap[i].type = sec_cap_query_info[i].type; + sec_cap[i].name = sec_cap_query_info[i].name; + sec_cap[i].cap_val = hisi_qm_get_cap_value(qm, sec_cap_query_info, + i, qm->cap_ver); + } + + qm->cap_tables.dev_cap_table = sec_cap; + qm->cap_tables.dev_cap_size = size; + + return 0; +} + +static void sec_set_channels(struct hisi_qm *qm) +{ + struct qm_channel *channel_data = &qm->channel_data; + + channel_data->channel_num = SEC_MAX_CHANNEL_NUM; + channel_data->channel_name[0] = "SEC"; +} + +static int sec_qm_init(struct hisi_qm *qm, struct pci_dev *pdev) +{ + u64 alg_msk; + int ret; + + qm->pdev = pdev; + qm->mode = uacce_mode; + qm->sqe_size = SEC_SQE_SIZE; + qm->dev_name = sec_name; + + qm->fun_type = (pdev->device == PCI_DEVICE_ID_HUAWEI_SEC_PF) ? + QM_HW_PF : QM_HW_VF; + if (qm->fun_type == QM_HW_PF) { + qm->qp_base = SEC_PF_DEF_Q_BASE; + qm->qp_num = pf_q_num; + qm->debug.curr_qm_qp_num = pf_q_num; + qm->qm_list = &sec_devices; + qm->err_ini = &sec_err_ini; + if (pf_q_num_flag) + set_bit(QM_MODULE_PARAM, &qm->misc_ctl); + } else if (qm->fun_type == QM_HW_VF && qm->ver == QM_HW_V1) { + /* + * have no way to get qm configure in VM in v1 hardware, + * so currently force PF to uses SEC_PF_DEF_Q_NUM, and force + * to trigger only one VF in v1 hardware. + * v2 hardware has no such problem. + */ + qm->qp_base = SEC_PF_DEF_Q_NUM; + qm->qp_num = SEC_QUEUE_NUM_V1 - SEC_PF_DEF_Q_NUM; + } + + ret = hisi_qm_init(qm); + if (ret) { + pci_err(qm->pdev, "Failed to init sec qm configures!\n"); + return ret; + } + + sec_set_channels(qm); + /* Fetch and save the value of capability registers */ + ret = sec_pre_store_cap_reg(qm); + if (ret) { + pci_err(qm->pdev, "Failed to pre-store capability registers!\n"); + hisi_qm_uninit(qm); + return ret; + } + alg_msk = sec_get_alg_bitmap(qm, SEC_ALG_BITMAP_HIGH, SEC_ALG_BITMAP_LOW); + ret = hisi_qm_set_algs(qm, alg_msk, sec_dev_algs, ARRAY_SIZE(sec_dev_algs)); + if (ret) { + pci_err(qm->pdev, "Failed to set sec algs!\n"); + hisi_qm_uninit(qm); + } + + return ret; +} + +static void sec_qm_uninit(struct hisi_qm *qm) +{ + hisi_qm_uninit(qm); +} + +static int sec_probe_init(struct sec_dev *sec) +{ + u32 type_rate = SEC_SHAPER_TYPE_RATE; + struct hisi_qm *qm = &sec->qm; + int ret; + + if (qm->fun_type == QM_HW_PF) { + ret = sec_pf_probe_init(sec); + if (ret) + return ret; + /* enable shaper type 0 */ + if (qm->ver >= QM_HW_V3) { + type_rate |= QM_SHAPER_ENABLE; + qm->type_rate = type_rate; + } + } + + return 0; +} + +static void sec_probe_uninit(struct hisi_qm *qm) +{ + if (qm->fun_type == QM_HW_VF) + return; + + sec_debug_regs_clear(qm); + sec_show_last_regs_uninit(qm); + sec_close_sva_prefetch(qm); + hisi_qm_dev_err_uninit(qm); +} + +static void sec_iommu_used_check(struct sec_dev *sec) +{ + struct iommu_domain *domain; + struct device *dev = &sec->qm.pdev->dev; + + domain = iommu_get_domain_for_dev(dev); + + /* Check if iommu is used */ + sec->iommu_used = false; + if (domain) { + if (domain->type & __IOMMU_DOMAIN_PAGING) + sec->iommu_used = true; + dev_info(dev, "SMMU Opened, the iommu type = %u\n", + domain->type); + } +} + +static int sec_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct sec_dev *sec; + struct hisi_qm *qm; + int ret; + + sec = devm_kzalloc(&pdev->dev, sizeof(*sec), GFP_KERNEL); + if (!sec) + return -ENOMEM; + + qm = &sec->qm; + ret = sec_qm_init(qm, pdev); + if (ret) { + pci_err(pdev, "Failed to init SEC QM (%d)!\n", ret); + return ret; + } + + sec->ctx_q_num = ctx_q_num; + sec_iommu_used_check(sec); + + ret = sec_probe_init(sec); + if (ret) { + pci_err(pdev, "Failed to probe!\n"); + goto err_qm_uninit; + } + + ret = hisi_qm_start(qm); + if (ret) { + pci_err(pdev, "Failed to start sec qm!\n"); + goto err_probe_uninit; + } + + ret = sec_debugfs_init(qm); + if (ret) + pci_warn(pdev, "Failed to init debugfs!\n"); + + hisi_qm_add_list(qm, &sec_devices); + ret = hisi_qm_alg_register(qm, &sec_devices, ctx_q_num); + if (ret < 0) { + pr_err("Failed to register driver to crypto.\n"); + goto err_qm_del_list; + } + + ret = hisi_qm_register_uacce(qm); + if (ret) { + pci_err(pdev, "failed to register uacce (%d)!\n", ret); + goto err_alg_unregister; + } + + if (qm->fun_type == QM_HW_PF && vfs_num) { + ret = hisi_qm_sriov_enable(pdev, vfs_num); + if (ret < 0) + goto err_alg_unregister; + } + + hisi_qm_pm_init(qm); + + return 0; + +err_alg_unregister: + hisi_qm_alg_unregister(qm, &sec_devices, ctx_q_num); +err_qm_del_list: + hisi_qm_del_list(qm, &sec_devices); + sec_debugfs_exit(qm); + hisi_qm_stop(qm, QM_NORMAL); +err_probe_uninit: + sec_probe_uninit(qm); +err_qm_uninit: + sec_qm_uninit(qm); + return ret; +} + +static void sec_remove(struct pci_dev *pdev) +{ + struct hisi_qm *qm = pci_get_drvdata(pdev); + + hisi_qm_pm_uninit(qm); + hisi_qm_wait_task_finish(qm, &sec_devices); + hisi_qm_alg_unregister(qm, &sec_devices, ctx_q_num); + hisi_qm_del_list(qm, &sec_devices); + + if (qm->fun_type == QM_HW_PF && qm->vfs_num) + hisi_qm_sriov_disable(pdev, true); + + sec_debugfs_exit(qm); + + (void)hisi_qm_stop(qm, QM_NORMAL); + sec_probe_uninit(qm); + + sec_qm_uninit(qm); +} + +static const struct dev_pm_ops sec_pm_ops = { + SET_RUNTIME_PM_OPS(hisi_qm_suspend, hisi_qm_resume, NULL) +}; + +static const struct pci_error_handlers sec_err_handler = { + .error_detected = hisi_qm_dev_err_detected, + .slot_reset = hisi_qm_dev_slot_reset, + .reset_prepare = hisi_qm_reset_prepare, + .reset_done = hisi_qm_reset_done, +}; + +static struct pci_driver sec_pci_driver = { + .name = "hisi_sec2", + .id_table = sec_dev_ids, + .probe = sec_probe, + .remove = sec_remove, + .err_handler = &sec_err_handler, + .sriov_configure = IS_ENABLED(CONFIG_PCI_IOV) ? + hisi_qm_sriov_configure : NULL, + .shutdown = hisi_qm_dev_shutdown, + .driver.pm = &sec_pm_ops, +}; + +struct pci_driver *hisi_sec_get_pf_driver(void) +{ + return &sec_pci_driver; +} +EXPORT_SYMBOL_GPL(hisi_sec_get_pf_driver); + +static void sec_register_debugfs(void) +{ + if (!debugfs_initialized()) + return; + + sec_debugfs_root = debugfs_create_dir("hisi_sec2", NULL); +} + +static void sec_unregister_debugfs(void) +{ + debugfs_remove_recursive(sec_debugfs_root); +} + +static int __init sec_init(void) +{ + int ret; + + hisi_qm_init_list(&sec_devices); + sec_register_debugfs(); + + ret = pci_register_driver(&sec_pci_driver); + if (ret < 0) { + sec_unregister_debugfs(); + pr_err("Failed to register pci driver.\n"); + return ret; + } + + return 0; +} + +static void __exit sec_exit(void) +{ + pci_unregister_driver(&sec_pci_driver); + sec_unregister_debugfs(); +} + +module_init(sec_init); +module_exit(sec_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Zaibo Xu <xuzaibo@huawei.com>"); +MODULE_AUTHOR("Longfang Liu <liulongfang@huawei.com>"); +MODULE_AUTHOR("Kai Ye <yekai13@huawei.com>"); +MODULE_AUTHOR("Wei Zhang <zhangwei375@huawei.com>"); +MODULE_DESCRIPTION("Driver for HiSilicon SEC accelerator"); diff --git a/drivers/crypto/hisilicon/sgl.c b/drivers/crypto/hisilicon/sgl.c new file mode 100644 index 000000000..1b2607797 --- /dev/null +++ b/drivers/crypto/hisilicon/sgl.c @@ -0,0 +1,290 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 HiSilicon Limited. */ +#include <linux/align.h> +#include <linux/dma-mapping.h> +#include <linux/hisi_acc_qm.h> +#include <linux/module.h> +#include <linux/slab.h> + +#define HISI_ACC_SGL_SGE_NR_MIN 1 +#define HISI_ACC_SGL_NR_MAX 256 +#define HISI_ACC_SGL_ALIGN_SIZE 64 +#define HISI_ACC_MEM_BLOCK_NR 5 + +struct acc_hw_sge { + dma_addr_t buf; + void *page_ctrl; + __le32 len; + __le32 pad; + __le32 pad0; + __le32 pad1; +}; + +/* use default sgl head size 64B */ +struct hisi_acc_hw_sgl { + dma_addr_t next_dma; + __le16 entry_sum_in_chain; + __le16 entry_sum_in_sgl; + __le16 entry_length_in_sgl; + __le16 pad0; + __le64 pad1[5]; + struct hisi_acc_hw_sgl *next; + struct acc_hw_sge sge_entries[]; +} __aligned(1); + +struct hisi_acc_sgl_pool { + struct mem_block { + struct hisi_acc_hw_sgl *sgl; + dma_addr_t sgl_dma; + size_t size; + } mem_block[HISI_ACC_MEM_BLOCK_NR]; + u32 sgl_num_per_block; + u32 block_num; + u32 count; + u32 sge_nr; + size_t sgl_size; +}; + +/** + * hisi_acc_create_sgl_pool() - Create a hw sgl pool. + * @dev: The device which hw sgl pool belongs to. + * @count: Count of hisi_acc_hw_sgl in pool. + * @sge_nr: The count of sge in hw_sgl + * + * This function creates a hw sgl pool, after this user can get hw sgl memory + * from it. + */ +struct hisi_acc_sgl_pool *hisi_acc_create_sgl_pool(struct device *dev, + u32 count, u32 sge_nr) +{ + u32 sgl_size, block_size, sgl_num_per_block, block_num, remain_sgl; + struct hisi_acc_sgl_pool *pool; + struct mem_block *block; + u32 i, j; + + if (!dev || !count || !sge_nr || sge_nr > HISI_ACC_SGL_SGE_NR_MAX) + return ERR_PTR(-EINVAL); + + sgl_size = ALIGN(sizeof(struct acc_hw_sge) * sge_nr + + sizeof(struct hisi_acc_hw_sgl), + HISI_ACC_SGL_ALIGN_SIZE); + + /* + * the pool may allocate a block of memory of size PAGE_SIZE * 2^MAX_PAGE_ORDER, + * block size may exceed 2^31 on ia64, so the max of block size is 2^31 + */ + block_size = 1 << (PAGE_SHIFT + MAX_PAGE_ORDER < 32 ? + PAGE_SHIFT + MAX_PAGE_ORDER : 31); + sgl_num_per_block = block_size / sgl_size; + block_num = count / sgl_num_per_block; + remain_sgl = count % sgl_num_per_block; + + if ((!remain_sgl && block_num > HISI_ACC_MEM_BLOCK_NR) || + (remain_sgl > 0 && block_num > HISI_ACC_MEM_BLOCK_NR - 1)) + return ERR_PTR(-EINVAL); + + pool = kzalloc_obj(*pool); + if (!pool) + return ERR_PTR(-ENOMEM); + block = pool->mem_block; + + for (i = 0; i < block_num; i++) { + block[i].sgl = dma_alloc_coherent(dev, block_size, + &block[i].sgl_dma, + GFP_KERNEL); + if (!block[i].sgl) { + dev_err(dev, "Fail to allocate hw SG buffer!\n"); + goto err_free_mem; + } + + block[i].size = block_size; + } + + if (remain_sgl > 0) { + block[i].sgl = dma_alloc_coherent(dev, remain_sgl * sgl_size, + &block[i].sgl_dma, + GFP_KERNEL); + if (!block[i].sgl) { + dev_err(dev, "Fail to allocate remained hw SG buffer!\n"); + goto err_free_mem; + } + + block[i].size = remain_sgl * sgl_size; + } + + pool->sgl_num_per_block = sgl_num_per_block; + pool->block_num = remain_sgl ? block_num + 1 : block_num; + pool->count = count; + pool->sgl_size = sgl_size; + pool->sge_nr = sge_nr; + + return pool; + +err_free_mem: + for (j = 0; j < i; j++) + dma_free_coherent(dev, block_size, block[j].sgl, + block[j].sgl_dma); + + kfree_sensitive(pool); + return ERR_PTR(-ENOMEM); +} +EXPORT_SYMBOL_GPL(hisi_acc_create_sgl_pool); + +/** + * hisi_acc_free_sgl_pool() - Free a hw sgl pool. + * @dev: The device which hw sgl pool belongs to. + * @pool: Pointer of pool. + * + * This function frees memory of a hw sgl pool. + */ +void hisi_acc_free_sgl_pool(struct device *dev, struct hisi_acc_sgl_pool *pool) +{ + struct mem_block *block; + u32 i; + + if (!dev || !pool) + return; + + block = pool->mem_block; + + for (i = 0; i < pool->block_num; i++) + dma_free_coherent(dev, block[i].size, block[i].sgl, + block[i].sgl_dma); + + kfree(pool); +} +EXPORT_SYMBOL_GPL(hisi_acc_free_sgl_pool); + +static struct hisi_acc_hw_sgl *acc_get_sgl(struct hisi_acc_sgl_pool *pool, + u32 index, dma_addr_t *hw_sgl_dma) +{ + struct mem_block *block; + u32 block_index, offset; + + block = pool->mem_block; + block_index = index / pool->sgl_num_per_block; + offset = index % pool->sgl_num_per_block; + + *hw_sgl_dma = block[block_index].sgl_dma + pool->sgl_size * offset; + return (void *)block[block_index].sgl + pool->sgl_size * offset; +} + +static void sg_map_to_hw_sg(struct scatterlist *sgl, + struct acc_hw_sge *hw_sge) +{ + hw_sge->buf = sg_dma_address(sgl); + hw_sge->len = cpu_to_le32(sg_dma_len(sgl)); + hw_sge->page_ctrl = sg_virt(sgl); +} + +static void inc_hw_sgl_sge(struct hisi_acc_hw_sgl *hw_sgl) +{ + u16 var = le16_to_cpu(hw_sgl->entry_sum_in_sgl); + + var++; + hw_sgl->entry_sum_in_sgl = cpu_to_le16(var); +} + +static void update_hw_sgl_sum_sge(struct hisi_acc_hw_sgl *hw_sgl, u16 sum) +{ + hw_sgl->entry_sum_in_chain = cpu_to_le16(sum); +} + +static void clear_hw_sgl_sge(struct hisi_acc_hw_sgl *hw_sgl) +{ + struct acc_hw_sge *hw_sge = hw_sgl->sge_entries; + u16 entry_sum = le16_to_cpu(hw_sgl->entry_sum_in_sgl); + int i; + + for (i = 0; i < entry_sum; i++) { + hw_sge[i].page_ctrl = NULL; + hw_sge[i].buf = 0; + hw_sge[i].len = 0; + } +} + +/** + * hisi_acc_sg_buf_map_to_hw_sgl - Map a scatterlist to a hw sgl. + * @dev: The device which hw sgl belongs to. + * @sgl: Scatterlist which will be mapped to hw sgl. + * @pool: Pool which hw sgl memory will be allocated in. + * @index: Index of hisi_acc_hw_sgl in pool. + * @hw_sgl_dma: The dma address of allocated hw sgl. + * @dir: DMA direction. + * + * This function builds hw sgl according input sgl, user can use hw_sgl_dma + * as src/dst in its BD. Only support single hw sgl currently. + */ +struct hisi_acc_hw_sgl * +hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev, struct scatterlist *sgl, + struct hisi_acc_sgl_pool *pool, u32 index, + dma_addr_t *hw_sgl_dma, enum dma_data_direction dir) +{ + struct hisi_acc_hw_sgl *curr_hw_sgl; + unsigned int i, sg_n_mapped; + dma_addr_t curr_sgl_dma = 0; + struct acc_hw_sge *curr_hw_sge; + struct scatterlist *sg; + int sg_n, ret; + + if (!dev || !sgl || !pool || !hw_sgl_dma || index >= pool->count) + return ERR_PTR(-EINVAL); + + sg_n = sg_nents(sgl); + + sg_n_mapped = dma_map_sg(dev, sgl, sg_n, dir); + if (!sg_n_mapped) { + dev_err(dev, "DMA mapping for SG error!\n"); + return ERR_PTR(-EINVAL); + } + + if (sg_n_mapped > pool->sge_nr) { + dev_err(dev, "the number of entries in input scatterlist is bigger than SGL pool setting.\n"); + ret = -EINVAL; + goto err_unmap; + } + + curr_hw_sgl = acc_get_sgl(pool, index, &curr_sgl_dma); + curr_hw_sgl->entry_length_in_sgl = cpu_to_le16(pool->sge_nr); + curr_hw_sge = curr_hw_sgl->sge_entries; + + for_each_sg(sgl, sg, sg_n_mapped, i) { + sg_map_to_hw_sg(sg, curr_hw_sge); + inc_hw_sgl_sge(curr_hw_sgl); + curr_hw_sge++; + } + + update_hw_sgl_sum_sge(curr_hw_sgl, pool->sge_nr); + *hw_sgl_dma = curr_sgl_dma; + + return curr_hw_sgl; + +err_unmap: + dma_unmap_sg(dev, sgl, sg_n, dir); + + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(hisi_acc_sg_buf_map_to_hw_sgl); + +/** + * hisi_acc_sg_buf_unmap() - Unmap allocated hw sgl. + * @dev: The device which hw sgl belongs to. + * @sgl: Related scatterlist. + * @hw_sgl: Virtual address of hw sgl. + * @dir: DMA direction. + * + * This function unmaps allocated hw sgl. + */ +void hisi_acc_sg_buf_unmap(struct device *dev, struct scatterlist *sgl, + struct hisi_acc_hw_sgl *hw_sgl, enum dma_data_direction dir) +{ + if (!dev || !sgl || !hw_sgl) + return; + + dma_unmap_sg(dev, sgl, sg_nents(sgl), dir); + clear_hw_sgl_sge(hw_sgl); + hw_sgl->entry_sum_in_chain = 0; + hw_sgl->entry_sum_in_sgl = 0; + hw_sgl->entry_length_in_sgl = 0; +} +EXPORT_SYMBOL_GPL(hisi_acc_sg_buf_unmap); diff --git a/drivers/crypto/hisilicon/zip/Makefile b/drivers/crypto/hisilicon/zip/Makefile new file mode 100644 index 000000000..13de020b7 --- /dev/null +++ b/drivers/crypto/hisilicon/zip/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_CRYPTO_DEV_HISI_ZIP) += hisi_zip.o +hisi_zip-objs = zip_main.o zip_crypto.o dae_main.o diff --git a/drivers/crypto/hisilicon/zip/dae_main.c b/drivers/crypto/hisilicon/zip/dae_main.c new file mode 100644 index 000000000..68aebd02f --- /dev/null +++ b/drivers/crypto/hisilicon/zip/dae_main.c @@ -0,0 +1,277 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 HiSilicon Limited. */ + +#include <linux/bitops.h> +#include <linux/io.h> +#include <linux/uacce.h> +#include "zip.h" + +/* memory */ +#define DAE_MEM_START_OFFSET 0x331040 +#define DAE_MEM_DONE_OFFSET 0x331044 +#define DAE_MEM_START_MASK 0x1 +#define DAE_MEM_DONE_MASK 0x1 +#define DAE_REG_RD_INTVRL_US 10 +#define DAE_REG_RD_TMOUT_US USEC_PER_SEC + +#define DAE_ALG_NAME "hashagg" +#define DAE_V5_ALG_NAME "hashagg\nudma\nhashjoin\ngather" + +/* error */ +#define DAE_AXI_CFG_OFFSET 0x331000 +#define DAE_AXI_SHUTDOWN_MASK (BIT(0) | BIT(5)) +#define DAE_ERR_SOURCE_OFFSET 0x331C84 +#define DAE_ERR_STATUS_OFFSET 0x331C88 +#define DAE_ERR_CE_OFFSET 0x331CA0 +#define DAE_ERR_CE_MASK BIT(3) +#define DAE_ERR_NFE_OFFSET 0x331CA4 +#define DAE_ERR_NFE_MASK 0x17 +#define DAE_ERR_FE_OFFSET 0x331CA8 +#define DAE_ERR_FE_MASK 0 +#define DAE_ECC_MBIT_MASK BIT(2) +#define DAE_ECC_INFO_OFFSET 0x33400C +#define DAE_ERR_SHUTDOWN_OFFSET 0x331CAC +#define DAE_ERR_SHUTDOWN_MASK 0x17 +#define DAE_ERR_ENABLE_OFFSET 0x331C80 +#define DAE_ERR_ENABLE_MASK (DAE_ERR_FE_MASK | DAE_ERR_NFE_MASK | DAE_ERR_CE_MASK) +#define DAE_AM_CTRL_GLOBAL_OFFSET 0x330000 +#define DAE_AM_RETURN_OFFSET 0x330150 +#define DAE_AM_RETURN_MASK 0x3 +#define DAE_AXI_CFG_OFFSET 0x331000 +#define DAE_AXI_SHUTDOWN_EN_MASK (BIT(0) | BIT(5)) + +struct hisi_dae_hw_error { + u32 int_msk; + const char *msg; +}; + +static const struct hisi_dae_hw_error dae_hw_error[] = { + { .int_msk = BIT(0), .msg = "dae_axi_bus_err" }, + { .int_msk = BIT(1), .msg = "dae_axi_poison_err" }, + { .int_msk = BIT(2), .msg = "dae_ecc_2bit_err" }, + { .int_msk = BIT(3), .msg = "dae_ecc_1bit_err" }, + { .int_msk = BIT(4), .msg = "dae_fsm_hbeat_err" }, +}; + +static inline bool dae_is_support(struct hisi_qm *qm) +{ + if (test_bit(QM_SUPPORT_DAE, &qm->caps)) + return true; + + return false; +} + +int hisi_dae_set_user_domain(struct hisi_qm *qm) +{ + u32 val; + int ret; + + if (!dae_is_support(qm)) + return 0; + + val = readl(qm->io_base + DAE_MEM_START_OFFSET); + val |= DAE_MEM_START_MASK; + writel(val, qm->io_base + DAE_MEM_START_OFFSET); + ret = readl_relaxed_poll_timeout(qm->io_base + DAE_MEM_DONE_OFFSET, val, + val & DAE_MEM_DONE_MASK, + DAE_REG_RD_INTVRL_US, DAE_REG_RD_TMOUT_US); + if (ret) + pci_err(qm->pdev, "failed to init dae memory!\n"); + + return ret; +} + +int hisi_dae_set_alg(struct hisi_qm *qm) +{ + const char *alg_name; + size_t len; + + if (!dae_is_support(qm)) + return 0; + + if (!qm->uacce) + return 0; + + if (qm->ver >= QM_HW_V5) + alg_name = DAE_V5_ALG_NAME; + else + alg_name = DAE_ALG_NAME; + + len = strlen(qm->uacce->algs); + /* A line break may be required */ + if (len + strlen(alg_name) + 1 >= QM_DEV_ALG_MAX_LEN) { + pci_err(qm->pdev, "algorithm name is too long!\n"); + return -EINVAL; + } + + if (len) + strcat((char *)qm->uacce->algs, "\n"); + + strcat((char *)qm->uacce->algs, alg_name); + + return 0; +} + +static void hisi_dae_master_ooo_ctrl(struct hisi_qm *qm, bool enable) +{ + u32 axi_val, err_val; + + axi_val = readl(qm->io_base + DAE_AXI_CFG_OFFSET); + if (enable) { + axi_val |= DAE_AXI_SHUTDOWN_MASK; + err_val = DAE_ERR_SHUTDOWN_MASK; + } else { + axi_val &= ~DAE_AXI_SHUTDOWN_MASK; + err_val = 0; + } + + writel(axi_val, qm->io_base + DAE_AXI_CFG_OFFSET); + writel(err_val, qm->io_base + DAE_ERR_SHUTDOWN_OFFSET); +} + +void hisi_dae_hw_error_enable(struct hisi_qm *qm) +{ + if (!dae_is_support(qm)) + return; + + /* clear dae hw error source if having */ + writel(DAE_ERR_ENABLE_MASK, qm->io_base + DAE_ERR_SOURCE_OFFSET); + + /* configure error type */ + writel(DAE_ERR_CE_MASK, qm->io_base + DAE_ERR_CE_OFFSET); + writel(DAE_ERR_NFE_MASK, qm->io_base + DAE_ERR_NFE_OFFSET); + writel(DAE_ERR_FE_MASK, qm->io_base + DAE_ERR_FE_OFFSET); + + hisi_dae_master_ooo_ctrl(qm, true); + + /* enable dae hw error interrupts */ + writel(DAE_ERR_ENABLE_MASK, qm->io_base + DAE_ERR_ENABLE_OFFSET); +} + +void hisi_dae_hw_error_disable(struct hisi_qm *qm) +{ + if (!dae_is_support(qm)) + return; + + writel(0, qm->io_base + DAE_ERR_ENABLE_OFFSET); + hisi_dae_master_ooo_ctrl(qm, false); +} + +static u32 hisi_dae_get_hw_err_status(struct hisi_qm *qm) +{ + return readl(qm->io_base + DAE_ERR_STATUS_OFFSET); +} + +static void hisi_dae_clear_hw_err_status(struct hisi_qm *qm, u32 err_sts) +{ + if (!dae_is_support(qm)) + return; + + writel(err_sts, qm->io_base + DAE_ERR_SOURCE_OFFSET); +} + +static void hisi_dae_disable_error_report(struct hisi_qm *qm, u32 err_type) +{ + writel(DAE_ERR_NFE_MASK & (~err_type), qm->io_base + DAE_ERR_NFE_OFFSET); +} + +static void hisi_dae_enable_error_report(struct hisi_qm *qm) +{ + writel(DAE_ERR_CE_MASK, qm->io_base + DAE_ERR_CE_OFFSET); + writel(DAE_ERR_NFE_MASK, qm->io_base + DAE_ERR_NFE_OFFSET); +} + +static void hisi_dae_log_hw_error(struct hisi_qm *qm, u32 err_type) +{ + const struct hisi_dae_hw_error *err = dae_hw_error; + struct device *dev = &qm->pdev->dev; + u32 ecc_info; + size_t i; + + for (i = 0; i < ARRAY_SIZE(dae_hw_error); i++) { + err = &dae_hw_error[i]; + if (!(err->int_msk & err_type)) + continue; + + dev_err(dev, "%s [error status=0x%x] found\n", + err->msg, err->int_msk); + + if (err->int_msk & DAE_ECC_MBIT_MASK) { + ecc_info = readl(qm->io_base + DAE_ECC_INFO_OFFSET); + dev_err(dev, "dae multi ecc sram info 0x%x\n", ecc_info); + } + } +} + +enum acc_err_result hisi_dae_get_err_result(struct hisi_qm *qm) +{ + u32 err_status; + + if (!dae_is_support(qm)) + return ACC_ERR_NONE; + + err_status = hisi_dae_get_hw_err_status(qm); + if (!err_status) + return ACC_ERR_NONE; + + hisi_dae_log_hw_error(qm, err_status); + + if (err_status & DAE_ERR_NFE_MASK) { + /* Disable the same error reporting until device is recovered. */ + hisi_dae_disable_error_report(qm, err_status); + return ACC_ERR_NEED_RESET; + } + hisi_dae_clear_hw_err_status(qm, err_status); + /* Avoid firmware disable error report, re-enable. */ + hisi_dae_enable_error_report(qm); + + return ACC_ERR_RECOVERED; +} + +bool hisi_dae_dev_is_abnormal(struct hisi_qm *qm) +{ + u32 err_status; + + if (!dae_is_support(qm)) + return false; + + err_status = hisi_dae_get_hw_err_status(qm); + if (err_status & DAE_ERR_NFE_MASK) + return true; + + return false; +} + +int hisi_dae_close_axi_master_ooo(struct hisi_qm *qm) +{ + u32 val; + int ret; + + if (!dae_is_support(qm)) + return 0; + + val = readl(qm->io_base + DAE_AM_CTRL_GLOBAL_OFFSET); + val |= BIT(0); + writel(val, qm->io_base + DAE_AM_CTRL_GLOBAL_OFFSET); + + ret = readl_relaxed_poll_timeout(qm->io_base + DAE_AM_RETURN_OFFSET, + val, (val == DAE_AM_RETURN_MASK), + DAE_REG_RD_INTVRL_US, DAE_REG_RD_TMOUT_US); + if (ret) + dev_err(&qm->pdev->dev, "failed to close dae axi ooo!\n"); + + return ret; +} + +void hisi_dae_open_axi_master_ooo(struct hisi_qm *qm) +{ + u32 val; + + if (!dae_is_support(qm)) + return; + + val = readl(qm->io_base + DAE_AXI_CFG_OFFSET); + + writel(val & ~DAE_AXI_SHUTDOWN_EN_MASK, qm->io_base + DAE_AXI_CFG_OFFSET); + writel(val | DAE_AXI_SHUTDOWN_EN_MASK, qm->io_base + DAE_AXI_CFG_OFFSET); +} diff --git a/drivers/crypto/hisilicon/zip/zip.h b/drivers/crypto/hisilicon/zip/zip.h new file mode 100644 index 000000000..b83f22828 --- /dev/null +++ b/drivers/crypto/hisilicon/zip/zip.h @@ -0,0 +1,114 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2019 HiSilicon Limited. */ +#ifndef HISI_ZIP_H +#define HISI_ZIP_H + +#undef pr_fmt +#define pr_fmt(fmt) "hisi_zip: " fmt + +#include <linux/list.h> +#include <linux/hisi_acc_qm.h> + +enum hisi_zip_error_type { + /* negative compression */ + HZIP_NC_ERR = 0x0d, +}; + +struct hisi_zip_dfx { + atomic64_t send_cnt; + atomic64_t recv_cnt; + atomic64_t send_busy_cnt; + atomic64_t err_bd_cnt; +}; + +struct hisi_zip_ctrl; + +struct hisi_zip { + struct hisi_qm qm; + struct hisi_zip_ctrl *ctrl; + struct hisi_zip_dfx dfx; +}; + +struct hisi_zip_sqe { + u32 consumed; + u32 produced; + u32 comp_data_length; + /* + * status: 0~7 bits + * rsvd: 8~31 bits + */ + u32 dw3; + u32 input_data_length; + u32 dw5; + u32 dw6; + /* + * in_sge_data_offset: 0~23 bits + * rsvd: 24~27 bits + * sqe_type: 29~31 bits + */ + u32 dw7; + /* + * out_sge_data_offset: 0~23 bits + * rsvd: 24~31 bits + */ + u32 dw8; + /* + * request_type: 0~7 bits + * buffer_type: 8~11 bits + * rsvd: 13~31 bits + */ + u32 dw9; + u32 dw10; + u32 dw11; + u32 dw12; + /* tag: in sqe type 0 */ + u32 dw13; + u32 dest_avail_out; + u32 dw15; + u32 dw16; + u32 dw17; + u32 source_addr_l; + u32 source_addr_h; + u32 dest_addr_l; + u32 dest_addr_h; + u32 dw22; + u32 dw23; + u32 dw24; + u32 dw25; + /* tag: in sqe type 3 */ + u32 dw26; + u32 dw27; + u32 rsvd1[4]; +}; + +enum zip_cap_table_type { + QM_RAS_NFE_TYPE, + QM_RAS_NFE_RESET, + QM_RAS_CE_TYPE, + ZIP_RAS_NFE_TYPE, + ZIP_RAS_NFE_RESET, + ZIP_RAS_CE_TYPE, + ZIP_CORE_INFO, + ZIP_CORE_EN, + ZIP_DRV_ALG_BITMAP_TB, + ZIP_ALG_BITMAP, + ZIP_CORE1_BITMAP, + ZIP_CORE2_BITMAP, + ZIP_CORE3_BITMAP, + ZIP_CORE4_BITMAP, + ZIP_CORE5_BITMAP, +}; + +int zip_create_qps(struct hisi_qp **qps, int qp_num, int node, u8 *alg_type); +int hisi_zip_register_to_crypto(struct hisi_qm *qm); +void hisi_zip_unregister_from_crypto(struct hisi_qm *qm); +bool hisi_zip_alg_support(struct hisi_qm *qm, u32 alg); +int hisi_dae_set_user_domain(struct hisi_qm *qm); +int hisi_dae_set_alg(struct hisi_qm *qm); +void hisi_dae_hw_error_disable(struct hisi_qm *qm); +void hisi_dae_hw_error_enable(struct hisi_qm *qm); +void hisi_dae_open_axi_master_ooo(struct hisi_qm *qm); +int hisi_dae_close_axi_master_ooo(struct hisi_qm *qm); +bool hisi_dae_dev_is_abnormal(struct hisi_qm *qm); +enum acc_err_result hisi_dae_get_err_result(struct hisi_qm *qm); +#endif diff --git a/drivers/crypto/hisilicon/zip/zip_crypto.c b/drivers/crypto/hisilicon/zip/zip_crypto.c new file mode 100644 index 000000000..70adde049 --- /dev/null +++ b/drivers/crypto/hisilicon/zip/zip_crypto.c @@ -0,0 +1,727 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 HiSilicon Limited. */ +#include <crypto/internal/acompress.h> +#include <linux/bitfield.h> +#include <linux/bitmap.h> +#include <linux/dma-mapping.h> +#include <linux/scatterlist.h> +#include "zip.h" + +/* hisi_zip_sqe dw3 */ +#define HZIP_BD_STATUS_M GENMASK(7, 0) +/* hisi_zip_sqe dw7 */ +#define HZIP_IN_SGE_DATA_OFFSET_M GENMASK(23, 0) +#define HZIP_SQE_TYPE_M GENMASK(31, 28) +/* hisi_zip_sqe dw8 */ +#define HZIP_OUT_SGE_DATA_OFFSET_M GENMASK(23, 0) +/* hisi_zip_sqe dw9 */ +#define HZIP_REQ_TYPE_M GENMASK(7, 0) +#define HZIP_ALG_TYPE_DEFLATE 0x01 +#define HZIP_ALG_TYPE_LZ4 0x04 +#define HZIP_BUF_TYPE_M GENMASK(11, 8) +#define HZIP_SGL 0x1 +#define HZIP_WIN_SIZE_M GENMASK(15, 12) +#define HZIP_16K_WINSZ 0x2 + +#define HZIP_ALG_PRIORITY 300 +#define HZIP_SGL_SGE_NR 10 + +#define HZIP_ALG_DEFLATE GENMASK(5, 4) +#define HZIP_ALG_LZ4 BIT(8) + +static DEFINE_MUTEX(zip_algs_lock); +static unsigned int zip_available_devs; + +enum hisi_zip_alg_type { + HZIP_ALG_TYPE_COMP = 0, + HZIP_ALG_TYPE_DECOMP = 1, +}; + +enum { + HZIP_QPC_COMP, + HZIP_QPC_DECOMP, + HZIP_CTX_Q_NUM +}; + +#define GET_REQ_FROM_SQE(sqe) ((u64)(sqe)->dw26 | (u64)(sqe)->dw27 << 32) +#define COMP_NAME_TO_TYPE(alg_name) \ + (!strcmp((alg_name), "deflate") ? HZIP_ALG_TYPE_DEFLATE : \ + (!strcmp((alg_name), "lz4") ? HZIP_ALG_TYPE_LZ4 : 0)) + +struct hisi_zip_req { + struct acomp_req *req; + struct hisi_acc_hw_sgl *hw_src; + struct hisi_acc_hw_sgl *hw_dst; + dma_addr_t dma_src; + dma_addr_t dma_dst; + struct hisi_zip_qp_ctx *qp_ctx; + u16 req_id; +}; + +struct hisi_zip_req_q { + struct hisi_zip_req *q; + unsigned long *req_bitmap; + spinlock_t req_lock; + u16 size; +}; + +struct hisi_zip_qp_ctx { + struct hisi_qp *qp; + struct hisi_zip_req_q req_q; + struct hisi_acc_sgl_pool *sgl_pool; + struct hisi_zip *zip_dev; + struct hisi_zip_ctx *ctx; + u8 req_type; +}; + +struct hisi_zip_sqe_ops { + u8 sqe_type; + void (*fill_addr)(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req); + void (*fill_buf_size)(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req); + void (*fill_buf_type)(struct hisi_zip_sqe *sqe, u8 buf_type); + void (*fill_req_type)(struct hisi_zip_sqe *sqe, u8 req_type); + void (*fill_win_size)(struct hisi_zip_sqe *sqe, u8 win_size); + void (*fill_tag)(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req); + void (*fill_sqe_type)(struct hisi_zip_sqe *sqe, u8 sqe_type); + u32 (*get_status)(struct hisi_zip_sqe *sqe); + u32 (*get_dstlen)(struct hisi_zip_sqe *sqe); +}; + +struct hisi_zip_ctx { + struct hisi_zip_qp_ctx qp_ctx[HZIP_CTX_Q_NUM]; + const struct hisi_zip_sqe_ops *ops; + bool fallback; +}; + +static int sgl_sge_nr_set(const char *val, const struct kernel_param *kp) +{ + int ret; + u16 n; + + if (!val) + return -EINVAL; + + ret = kstrtou16(val, 10, &n); + if (ret || n == 0 || n > HISI_ACC_SGL_SGE_NR_MAX) + return -EINVAL; + + return param_set_ushort(val, kp); +} + +static const struct kernel_param_ops sgl_sge_nr_ops = { + .set = sgl_sge_nr_set, + .get = param_get_ushort, +}; + +static u16 sgl_sge_nr = HZIP_SGL_SGE_NR; +module_param_cb(sgl_sge_nr, &sgl_sge_nr_ops, &sgl_sge_nr, 0444); +MODULE_PARM_DESC(sgl_sge_nr, "Number of sge in sgl(1-255)"); + +static int hisi_zip_fallback_do_work(struct acomp_req *acomp_req, bool is_decompress) +{ + ACOMP_FBREQ_ON_STACK(fbreq, acomp_req); + int ret; + + if (!is_decompress) + ret = crypto_acomp_compress(fbreq); + else + ret = crypto_acomp_decompress(fbreq); + if (ret) { + pr_err("failed to do fallback work, ret=%d\n", ret); + return ret; + } + + acomp_req->dlen = fbreq->dlen; + return ret; +} + +static struct hisi_zip_req *hisi_zip_create_req(struct hisi_zip_qp_ctx *qp_ctx, + struct acomp_req *req) +{ + struct hisi_zip_req_q *req_q = &qp_ctx->req_q; + struct hisi_zip_req *q = req_q->q; + struct hisi_zip_req *req_cache; + int req_id; + + spin_lock(&req_q->req_lock); + + req_id = find_first_zero_bit(req_q->req_bitmap, req_q->size); + if (req_id >= req_q->size) { + spin_unlock(&req_q->req_lock); + dev_dbg(&qp_ctx->qp->qm->pdev->dev, "req cache is full!\n"); + return ERR_PTR(-EAGAIN); + } + set_bit(req_id, req_q->req_bitmap); + + spin_unlock(&req_q->req_lock); + + req_cache = q + req_id; + req_cache->req_id = req_id; + req_cache->req = req; + req_cache->qp_ctx = qp_ctx; + + return req_cache; +} + +static void hisi_zip_remove_req(struct hisi_zip_qp_ctx *qp_ctx, + struct hisi_zip_req *req) +{ + struct hisi_zip_req_q *req_q = &qp_ctx->req_q; + + spin_lock(&req_q->req_lock); + clear_bit(req->req_id, req_q->req_bitmap); + spin_unlock(&req_q->req_lock); +} + +static void hisi_zip_fill_addr(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req) +{ + sqe->source_addr_l = lower_32_bits(req->dma_src); + sqe->source_addr_h = upper_32_bits(req->dma_src); + sqe->dest_addr_l = lower_32_bits(req->dma_dst); + sqe->dest_addr_h = upper_32_bits(req->dma_dst); +} + +static void hisi_zip_fill_buf_size(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req) +{ + struct acomp_req *a_req = req->req; + + sqe->input_data_length = a_req->slen; + sqe->dest_avail_out = a_req->dlen; +} + +static void hisi_zip_fill_buf_type(struct hisi_zip_sqe *sqe, u8 buf_type) +{ + u32 val; + + val = sqe->dw9 & ~HZIP_BUF_TYPE_M; + val |= FIELD_PREP(HZIP_BUF_TYPE_M, buf_type); + sqe->dw9 = val; +} + +static void hisi_zip_fill_req_type(struct hisi_zip_sqe *sqe, u8 req_type) +{ + u32 val; + + val = sqe->dw9 & ~HZIP_REQ_TYPE_M; + val |= FIELD_PREP(HZIP_REQ_TYPE_M, req_type); + sqe->dw9 = val; +} + +static void hisi_zip_fill_win_size(struct hisi_zip_sqe *sqe, u8 win_size) +{ + u32 val; + + val = sqe->dw9 & ~HZIP_WIN_SIZE_M; + val |= FIELD_PREP(HZIP_WIN_SIZE_M, win_size); + sqe->dw9 = val; +} + +static void hisi_zip_fill_tag(struct hisi_zip_sqe *sqe, struct hisi_zip_req *req) +{ + sqe->dw26 = lower_32_bits((u64)req); + sqe->dw27 = upper_32_bits((u64)req); +} + +static void hisi_zip_fill_sqe_type(struct hisi_zip_sqe *sqe, u8 sqe_type) +{ + u32 val; + + val = sqe->dw7 & ~HZIP_SQE_TYPE_M; + val |= FIELD_PREP(HZIP_SQE_TYPE_M, sqe_type); + sqe->dw7 = val; +} + +static void hisi_zip_fill_sqe(struct hisi_zip_ctx *ctx, struct hisi_zip_sqe *sqe, + u8 req_type, struct hisi_zip_req *req) +{ + const struct hisi_zip_sqe_ops *ops = ctx->ops; + + memset(sqe, 0, sizeof(struct hisi_zip_sqe)); + + ops->fill_addr(sqe, req); + ops->fill_buf_size(sqe, req); + ops->fill_buf_type(sqe, HZIP_SGL); + ops->fill_req_type(sqe, req_type); + ops->fill_win_size(sqe, HZIP_16K_WINSZ); + ops->fill_tag(sqe, req); + ops->fill_sqe_type(sqe, ops->sqe_type); +} + +static int hisi_zip_do_work(struct hisi_zip_qp_ctx *qp_ctx, + struct hisi_zip_req *req) +{ + struct hisi_acc_sgl_pool *pool = qp_ctx->sgl_pool; + struct hisi_zip_dfx *dfx = &qp_ctx->zip_dev->dfx; + struct acomp_req *a_req = req->req; + struct hisi_qp *qp = qp_ctx->qp; + struct device *dev = &qp->qm->pdev->dev; + struct hisi_zip_sqe zip_sqe; + int ret; + + if (unlikely(!a_req->src || !a_req->slen || !a_req->dst || !a_req->dlen)) + return -EINVAL; + + req->hw_src = hisi_acc_sg_buf_map_to_hw_sgl(dev, a_req->src, pool, + req->req_id << 1, &req->dma_src, + DMA_TO_DEVICE); + if (IS_ERR(req->hw_src)) { + dev_err(dev, "failed to map the src buffer to hw sgl (%ld)!\n", + PTR_ERR(req->hw_src)); + return PTR_ERR(req->hw_src); + } + + req->hw_dst = hisi_acc_sg_buf_map_to_hw_sgl(dev, a_req->dst, pool, + (req->req_id << 1) + 1, + &req->dma_dst, DMA_FROM_DEVICE); + if (IS_ERR(req->hw_dst)) { + ret = PTR_ERR(req->hw_dst); + dev_err(dev, "failed to map the dst buffer to hw sgl (%d)!\n", + ret); + goto err_unmap_input; + } + + hisi_zip_fill_sqe(qp_ctx->ctx, &zip_sqe, qp_ctx->req_type, req); + + /* send command to start a task */ + atomic64_inc(&dfx->send_cnt); + ret = hisi_qp_send(qp, &zip_sqe); + if (unlikely(ret < 0)) { + atomic64_inc(&dfx->send_busy_cnt); + ret = -EAGAIN; + dev_dbg_ratelimited(dev, "failed to send request!\n"); + goto err_unmap_output; + } + + return -EINPROGRESS; + +err_unmap_output: + hisi_acc_sg_buf_unmap(dev, a_req->dst, req->hw_dst, DMA_FROM_DEVICE); +err_unmap_input: + hisi_acc_sg_buf_unmap(dev, a_req->src, req->hw_src, DMA_TO_DEVICE); + return ret; +} + +static u32 hisi_zip_get_status(struct hisi_zip_sqe *sqe) +{ + return sqe->dw3 & HZIP_BD_STATUS_M; +} + +static u32 hisi_zip_get_dstlen(struct hisi_zip_sqe *sqe) +{ + return sqe->produced; +} + +static void hisi_zip_acomp_cb(struct hisi_qp *qp, void *data) +{ + struct hisi_zip_sqe *sqe = data; + struct hisi_zip_req *req = (struct hisi_zip_req *)GET_REQ_FROM_SQE(sqe); + struct hisi_zip_qp_ctx *qp_ctx = req->qp_ctx; + const struct hisi_zip_sqe_ops *ops = qp_ctx->ctx->ops; + struct hisi_zip_dfx *dfx = &qp_ctx->zip_dev->dfx; + struct device *dev = &qp->qm->pdev->dev; + struct acomp_req *acomp_req = req->req; + int err = 0; + u32 status; + + atomic64_inc(&dfx->recv_cnt); + status = ops->get_status(sqe); + if (unlikely(status != 0 && status != HZIP_NC_ERR)) { + dev_err(dev, "%scompress fail in qp%u: %u, output: %u\n", + (qp->alg_type == 0) ? "" : "de", qp->qp_id, status, + sqe->produced); + atomic64_inc(&dfx->err_bd_cnt); + err = -EIO; + } + + hisi_acc_sg_buf_unmap(dev, acomp_req->dst, req->hw_dst, DMA_FROM_DEVICE); + hisi_acc_sg_buf_unmap(dev, acomp_req->src, req->hw_src, DMA_TO_DEVICE); + + acomp_req->dlen = ops->get_dstlen(sqe); + + if (acomp_req->base.complete) + acomp_request_complete(acomp_req, err); + + hisi_zip_remove_req(qp_ctx, req); +} + +static int hisi_zip_acompress(struct acomp_req *acomp_req) +{ + struct hisi_zip_ctx *ctx = crypto_tfm_ctx(acomp_req->base.tfm); + struct hisi_zip_qp_ctx *qp_ctx = &ctx->qp_ctx[HZIP_QPC_COMP]; + struct hisi_zip_req *req; + struct device *dev; + int ret; + + if (ctx->fallback) + return hisi_zip_fallback_do_work(acomp_req, 0); + + dev = &qp_ctx->qp->qm->pdev->dev; + + req = hisi_zip_create_req(qp_ctx, acomp_req); + if (IS_ERR(req)) + return PTR_ERR(req); + + ret = hisi_zip_do_work(qp_ctx, req); + if (unlikely(ret != -EINPROGRESS)) { + dev_info_ratelimited(dev, "failed to do compress (%d)!\n", ret); + hisi_zip_remove_req(qp_ctx, req); + } + + return ret; +} + +static int hisi_zip_adecompress(struct acomp_req *acomp_req) +{ + struct hisi_zip_ctx *ctx = crypto_tfm_ctx(acomp_req->base.tfm); + struct hisi_zip_qp_ctx *qp_ctx = &ctx->qp_ctx[HZIP_QPC_DECOMP]; + struct hisi_zip_req *req; + struct device *dev; + int ret; + + if (ctx->fallback) + return hisi_zip_fallback_do_work(acomp_req, 1); + + dev = &qp_ctx->qp->qm->pdev->dev; + + req = hisi_zip_create_req(qp_ctx, acomp_req); + if (IS_ERR(req)) + return PTR_ERR(req); + + ret = hisi_zip_do_work(qp_ctx, req); + if (unlikely(ret != -EINPROGRESS)) { + dev_info_ratelimited(dev, "failed to do decompress (%d)!\n", + ret); + hisi_zip_remove_req(qp_ctx, req); + } + + return ret; +} + +static int hisi_zip_decompress(struct acomp_req *acomp_req) +{ + return hisi_zip_fallback_do_work(acomp_req, 1); +} + +static const struct hisi_zip_sqe_ops hisi_zip_ops = { + .sqe_type = 0x3, + .fill_addr = hisi_zip_fill_addr, + .fill_buf_size = hisi_zip_fill_buf_size, + .fill_buf_type = hisi_zip_fill_buf_type, + .fill_req_type = hisi_zip_fill_req_type, + .fill_win_size = hisi_zip_fill_win_size, + .fill_tag = hisi_zip_fill_tag, + .fill_sqe_type = hisi_zip_fill_sqe_type, + .get_status = hisi_zip_get_status, + .get_dstlen = hisi_zip_get_dstlen, +}; + +static int hisi_zip_ctx_init(struct hisi_zip_ctx *hisi_zip_ctx, u8 req_type, int node) +{ + struct hisi_qp *qps[HZIP_CTX_Q_NUM] = { NULL }; + struct hisi_zip_qp_ctx *qp_ctx; + u8 alg_type[HZIP_CTX_Q_NUM]; + struct hisi_zip *hisi_zip; + int ret, i; + + /* alg_type = 0 for compress, 1 for decompress in hw sqe */ + for (i = 0; i < HZIP_CTX_Q_NUM; i++) + alg_type[i] = i; + + ret = zip_create_qps(qps, HZIP_CTX_Q_NUM, node, alg_type); + if (ret) { + pr_err("failed to create zip qps (%d)!\n", ret); + return -ENODEV; + } + + hisi_zip = container_of(qps[0]->qm, struct hisi_zip, qm); + + for (i = 0; i < HZIP_CTX_Q_NUM; i++) { + qp_ctx = &hisi_zip_ctx->qp_ctx[i]; + qp_ctx->ctx = hisi_zip_ctx; + qp_ctx->zip_dev = hisi_zip; + qp_ctx->req_type = req_type; + qp_ctx->qp = qps[i]; + } + + hisi_zip_ctx->ops = &hisi_zip_ops; + + return 0; +} + +static void hisi_zip_ctx_exit(struct hisi_zip_ctx *hisi_zip_ctx) +{ + struct hisi_qp *qps[HZIP_CTX_Q_NUM] = { NULL }; + int i; + + for (i = 0; i < HZIP_CTX_Q_NUM; i++) + qps[i] = hisi_zip_ctx->qp_ctx[i].qp; + + hisi_qm_free_qps(qps, HZIP_CTX_Q_NUM); +} + +static int hisi_zip_create_req_q(struct hisi_zip_ctx *ctx) +{ + u16 q_depth = ctx->qp_ctx[0].qp->sq_depth; + struct hisi_zip_req_q *req_q; + int i, ret; + + for (i = 0; i < HZIP_CTX_Q_NUM; i++) { + req_q = &ctx->qp_ctx[i].req_q; + req_q->size = q_depth; + + req_q->req_bitmap = bitmap_zalloc(req_q->size, GFP_KERNEL); + if (!req_q->req_bitmap) { + ret = -ENOMEM; + if (i == 0) + return ret; + + goto err_free_comp_q; + } + spin_lock_init(&req_q->req_lock); + + req_q->q = kzalloc_objs(struct hisi_zip_req, req_q->size); + if (!req_q->q) { + ret = -ENOMEM; + if (i == 0) + goto err_free_comp_bitmap; + else + goto err_free_decomp_bitmap; + } + } + + return 0; + +err_free_decomp_bitmap: + bitmap_free(ctx->qp_ctx[HZIP_QPC_DECOMP].req_q.req_bitmap); +err_free_comp_q: + kfree(ctx->qp_ctx[HZIP_QPC_COMP].req_q.q); +err_free_comp_bitmap: + bitmap_free(ctx->qp_ctx[HZIP_QPC_COMP].req_q.req_bitmap); + return ret; +} + +static void hisi_zip_release_req_q(struct hisi_zip_ctx *ctx) +{ + int i; + + for (i = 0; i < HZIP_CTX_Q_NUM; i++) { + kfree(ctx->qp_ctx[i].req_q.q); + bitmap_free(ctx->qp_ctx[i].req_q.req_bitmap); + } +} + +static int hisi_zip_create_sgl_pool(struct hisi_zip_ctx *ctx) +{ + u16 q_depth = ctx->qp_ctx[0].qp->sq_depth; + struct hisi_zip_qp_ctx *tmp; + struct device *dev; + int i; + + for (i = 0; i < HZIP_CTX_Q_NUM; i++) { + tmp = &ctx->qp_ctx[i]; + dev = &tmp->qp->qm->pdev->dev; + tmp->sgl_pool = hisi_acc_create_sgl_pool(dev, q_depth << 1, + sgl_sge_nr); + if (IS_ERR(tmp->sgl_pool)) { + if (i == 1) + goto err_free_sgl_pool0; + return -ENOMEM; + } + } + + return 0; + +err_free_sgl_pool0: + hisi_acc_free_sgl_pool(&ctx->qp_ctx[HZIP_QPC_COMP].qp->qm->pdev->dev, + ctx->qp_ctx[HZIP_QPC_COMP].sgl_pool); + return -ENOMEM; +} + +static void hisi_zip_release_sgl_pool(struct hisi_zip_ctx *ctx) +{ + int i; + + for (i = 0; i < HZIP_CTX_Q_NUM; i++) + hisi_acc_free_sgl_pool(&ctx->qp_ctx[i].qp->qm->pdev->dev, + ctx->qp_ctx[i].sgl_pool); +} + +static void hisi_zip_set_acomp_cb(struct hisi_zip_ctx *ctx, + void (*fn)(struct hisi_qp *, void *)) +{ + int i; + + for (i = 0; i < HZIP_CTX_Q_NUM; i++) + ctx->qp_ctx[i].qp->req_cb = fn; +} + +static int hisi_zip_acomp_init(struct crypto_acomp *tfm) +{ + const char *alg_name = crypto_tfm_alg_name(&tfm->base); + struct hisi_zip_ctx *ctx = crypto_tfm_ctx(&tfm->base); + struct device *dev; + int ret; + + ret = hisi_zip_ctx_init(ctx, COMP_NAME_TO_TYPE(alg_name), tfm->base.node); + if (ret) { + pr_err("failed to init ctx (%d)!\n", ret); + goto switch_to_soft; + } + + dev = &ctx->qp_ctx[0].qp->qm->pdev->dev; + + ret = hisi_zip_create_req_q(ctx); + if (ret) { + dev_err(dev, "failed to create request queue (%d)!\n", ret); + goto err_ctx_exit; + } + + ret = hisi_zip_create_sgl_pool(ctx); + if (ret) { + dev_err(dev, "failed to create sgl pool (%d)!\n", ret); + goto err_release_req_q; + } + + hisi_zip_set_acomp_cb(ctx, hisi_zip_acomp_cb); + + return 0; + +err_release_req_q: + hisi_zip_release_req_q(ctx); +err_ctx_exit: + hisi_zip_ctx_exit(ctx); +switch_to_soft: + ctx->fallback = true; + return 0; +} + +static void hisi_zip_acomp_exit(struct crypto_acomp *tfm) +{ + struct hisi_zip_ctx *ctx = crypto_tfm_ctx(&tfm->base); + + if (ctx->fallback) + return; + + hisi_zip_release_sgl_pool(ctx); + hisi_zip_release_req_q(ctx); + hisi_zip_ctx_exit(ctx); +} + +static struct acomp_alg hisi_zip_acomp_deflate = { + .init = hisi_zip_acomp_init, + .exit = hisi_zip_acomp_exit, + .compress = hisi_zip_acompress, + .decompress = hisi_zip_adecompress, + .base = { + .cra_name = "deflate", + .cra_driver_name = "hisi-deflate-acomp", + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_NEED_FALLBACK, + .cra_module = THIS_MODULE, + .cra_priority = HZIP_ALG_PRIORITY, + .cra_ctxsize = sizeof(struct hisi_zip_ctx), + } +}; + +static int hisi_zip_register_deflate(struct hisi_qm *qm) +{ + int ret; + + if (!hisi_zip_alg_support(qm, HZIP_ALG_DEFLATE)) + return 0; + + ret = crypto_register_acomp(&hisi_zip_acomp_deflate); + if (ret) + dev_err(&qm->pdev->dev, "failed to register to deflate (%d)!\n", ret); + + return ret; +} + +static void hisi_zip_unregister_deflate(struct hisi_qm *qm) +{ + if (!hisi_zip_alg_support(qm, HZIP_ALG_DEFLATE)) + return; + + crypto_unregister_acomp(&hisi_zip_acomp_deflate); +} + +static struct acomp_alg hisi_zip_acomp_lz4 = { + .init = hisi_zip_acomp_init, + .exit = hisi_zip_acomp_exit, + .compress = hisi_zip_acompress, + .decompress = hisi_zip_decompress, + .base = { + .cra_name = "lz4", + .cra_driver_name = "hisi-lz4-acomp", + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_NEED_FALLBACK, + .cra_module = THIS_MODULE, + .cra_priority = HZIP_ALG_PRIORITY, + .cra_ctxsize = sizeof(struct hisi_zip_ctx), + } +}; + +static int hisi_zip_register_lz4(struct hisi_qm *qm) +{ + int ret; + + if (!hisi_zip_alg_support(qm, HZIP_ALG_LZ4)) + return 0; + + ret = crypto_register_acomp(&hisi_zip_acomp_lz4); + if (ret) + dev_err(&qm->pdev->dev, "failed to register to LZ4 (%d)!\n", ret); + + return ret; +} + +static void hisi_zip_unregister_lz4(struct hisi_qm *qm) +{ + if (!hisi_zip_alg_support(qm, HZIP_ALG_LZ4)) + return; + + crypto_unregister_acomp(&hisi_zip_acomp_lz4); +} + +int hisi_zip_register_to_crypto(struct hisi_qm *qm) +{ + int ret = 0; + + mutex_lock(&zip_algs_lock); + if (zip_available_devs) { + zip_available_devs++; + goto unlock; + } + + ret = hisi_zip_register_deflate(qm); + if (ret) + goto unlock; + + ret = hisi_zip_register_lz4(qm); + if (ret) + goto unreg_deflate; + + zip_available_devs++; + mutex_unlock(&zip_algs_lock); + + return 0; + +unreg_deflate: + hisi_zip_unregister_deflate(qm); +unlock: + mutex_unlock(&zip_algs_lock); + return ret; +} + +void hisi_zip_unregister_from_crypto(struct hisi_qm *qm) +{ + mutex_lock(&zip_algs_lock); + if (--zip_available_devs) + goto unlock; + + hisi_zip_unregister_deflate(qm); + hisi_zip_unregister_lz4(qm); + +unlock: + mutex_unlock(&zip_algs_lock); +} diff --git a/drivers/crypto/hisilicon/zip/zip_main.c b/drivers/crypto/hisilicon/zip/zip_main.c new file mode 100644 index 000000000..706a73656 --- /dev/null +++ b/drivers/crypto/hisilicon/zip/zip_main.c @@ -0,0 +1,1680 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 HiSilicon Limited. */ +#include <linux/acpi.h> +#include <linux/bitops.h> +#include <linux/debugfs.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/pm_runtime.h> +#include <linux/seq_file.h> +#include <linux/topology.h> +#include <linux/uacce.h> +#include "zip.h" + +#define CAP_FILE_PERMISSION 0444 +#define PCI_DEVICE_ID_HUAWEI_ZIP_PF 0xa250 + +#define HZIP_QUEUE_NUM_V1 4096 + +#define HZIP_CLOCK_GATE_CTRL 0x301004 +#define HZIP_DECOMP_CHECK_ENABLE BIT(16) +#define HZIP_FSM_MAX_CNT 0x301008 + +#define HZIP_PORT_ARCA_CHE_0 0x301040 +#define HZIP_PORT_ARCA_CHE_1 0x301044 +#define HZIP_PORT_AWCA_CHE_0 0x301060 +#define HZIP_PORT_AWCA_CHE_1 0x301064 +#define HZIP_CACHE_ALL_EN 0xffffffff + +#define HZIP_BD_RUSER_32_63 0x301110 +#define HZIP_SGL_RUSER_32_63 0x30111c +#define HZIP_DATA_RUSER_32_63 0x301128 +#define HZIP_DATA_WUSER_32_63 0x301134 +#define HZIP_BD_WUSER_32_63 0x301140 + +#define HZIP_QM_IDEL_STATUS 0x3040e4 + +#define HZIP_CORE_DFX_BASE 0x301000 +#define HZIP_CORE_DFX_DECOMP_BASE 0x304000 +#define HZIP_CORE_DFX_COMP_0 0x302000 +#define HZIP_CORE_DFX_COMP_1 0x303000 +#define HZIP_CORE_DFX_DECOMP_0 0x304000 +#define HZIP_CORE_DFX_DECOMP_1 0x305000 +#define HZIP_CORE_DFX_DECOMP_2 0x306000 +#define HZIP_CORE_DFX_DECOMP_3 0x307000 +#define HZIP_CORE_DFX_DECOMP_4 0x308000 +#define HZIP_CORE_DFX_DECOMP_5 0x309000 +#define HZIP_CORE_REGS_BASE_LEN 0xB0 +#define HZIP_CORE_REGS_DFX_LEN 0x28 +#define HZIP_CORE_ADDR_INTRVL 0x1000 + +#define HZIP_CORE_INT_SOURCE 0x3010A0 +#define HZIP_CORE_INT_MASK_REG 0x3010A4 +#define HZIP_CORE_INT_SET 0x3010A8 +#define HZIP_CORE_INT_STATUS 0x3010AC +#define HZIP_CORE_INT_STATUS_M_ECC BIT(1) +#define HZIP_CORE_SRAM_ECC_ERR_INFO 0x301148 +#define HZIP_CORE_INT_RAS_CE_ENB 0x301160 +#define HZIP_CORE_INT_RAS_NFE_ENB 0x301164 +#define HZIP_CORE_INT_RAS_FE_ENB 0x301168 +#define HZIP_CORE_INT_RAS_FE_ENB_MASK 0x0 +#define HZIP_OOO_SHUTDOWN_SEL 0x30120C +#define HZIP_SRAM_ECC_ERR_NUM_SHIFT 16 +#define HZIP_SRAM_ECC_ERR_ADDR_SHIFT 24 +#define HZIP_CORE_INT_MASK_ALL GENMASK(31, 0) +#define HZIP_CORE_RAS_CLEAR_ALL GENMASK(31, 0) +#define HZIP_AXI_ERROR_MASK (BIT(2) | BIT(3)) +#define HZIP_SQE_SIZE 128 +#define HZIP_PF_DEF_Q_NUM 64 +#define HZIP_PF_DEF_Q_BASE 0 +#define HZIP_CTX_Q_NUM_DEF 2 + +#define HZIP_SOFT_CTRL_CNT_CLR_CE 0x301000 +#define HZIP_SOFT_CTRL_CNT_CLR_CE_BIT BIT(0) +#define HZIP_SOFT_CTRL_ZIP_CONTROL 0x30100C +#define HZIP_AXI_SHUTDOWN_ENABLE BIT(14) +#define HZIP_WR_PORT BIT(11) + +#define HZIP_ALG_ZLIB_BIT GENMASK(1, 0) +#define HZIP_ALG_GZIP_BIT GENMASK(3, 2) +#define HZIP_ALG_DEFLATE_BIT GENMASK(5, 4) +#define HZIP_ALG_LZ77_BIT GENMASK(7, 6) +#define HZIP_ALG_LZ4_BIT GENMASK(9, 8) + +#define HZIP_BUF_SIZE 22 +#define HZIP_SQE_MASK_OFFSET 64 +#define HZIP_SQE_MASK_LEN 48 + +#define HZIP_CNT_CLR_CE_EN BIT(0) +#define HZIP_RO_CNT_CLR_CE_EN BIT(2) +#define HZIP_RD_CNT_CLR_CE_EN (HZIP_CNT_CLR_CE_EN | \ + HZIP_RO_CNT_CLR_CE_EN) + +#define HZIP_PREFETCH_CFG 0x3011B0 +#define HZIP_SVA_TRANS 0x3011C4 +#define HZIP_PREFETCH_ENABLE (~(BIT(26) | BIT(17) | BIT(0))) +#define HZIP_SVA_PREFETCH_DISABLE BIT(26) +#define HZIP_SVA_DISABLE_READY (BIT(26) | BIT(30)) +#define HZIP_SVA_PREFETCH_NUM GENMASK(18, 16) +#define HZIP_SVA_STALL_NUM GENMASK(15, 0) +#define HZIP_SHAPER_RATE_COMPRESS 750 +#define HZIP_SHAPER_RATE_DECOMPRESS 140 +#define HZIP_DELAY_1_US 1 +#define HZIP_POLL_TIMEOUT_US 1000 +#define HZIP_WAIT_SVA_READY 500000 +#define HZIP_READ_SVA_STATUS_TIMES 3 +#define HZIP_WAIT_US_MIN 10 +#define HZIP_WAIT_US_MAX 20 + +/* clock gating */ +#define HZIP_PEH_CFG_AUTO_GATE 0x3011A8 +#define HZIP_PEH_CFG_AUTO_GATE_EN BIT(0) +#define HZIP_CORE_GATED_EN GENMASK(15, 8) +#define HZIP_CORE_GATED_OOO_EN BIT(29) +#define HZIP_CLOCK_GATED_EN (HZIP_CORE_GATED_EN | \ + HZIP_CORE_GATED_OOO_EN) + +/* zip comp high performance */ +#define HZIP_HIGH_PERF_OFFSET 0x301208 + +#define HZIP_LIT_LEN_EN_OFFSET 0x301204 +#define HZIP_LIT_LEN_EN_EN BIT(4) + +#define HZIP_MAX_CHANNEL_NUM 3 + +enum { + HZIP_HIGH_COMP_RATE, + HZIP_HIGH_COMP_PERF, +}; + +static const char hisi_zip_name[] = "hisi_zip"; +static struct dentry *hzip_debugfs_root; + +struct hisi_zip_hw_error { + u32 int_msk; + const char *msg; +}; + +struct zip_dfx_item { + const char *name; + u32 offset; +}; + +static const struct qm_dev_alg zip_dev_algs[] = { { + .alg_msk = HZIP_ALG_ZLIB_BIT, + .alg = "zlib\n", + }, { + .alg_msk = HZIP_ALG_GZIP_BIT, + .alg = "gzip\n", + }, { + .alg_msk = HZIP_ALG_DEFLATE_BIT, + .alg = "deflate\n", + }, { + .alg_msk = HZIP_ALG_LZ77_BIT, + .alg = "lz77_zstd\n", + }, { + .alg_msk = HZIP_ALG_LZ77_BIT, + .alg = "lz77_only\n", + }, { + .alg_msk = HZIP_ALG_LZ4_BIT, + .alg = "lz4\n", + }, +}; + +static struct hisi_qm_list zip_devices = { + .register_to_crypto = hisi_zip_register_to_crypto, + .unregister_from_crypto = hisi_zip_unregister_from_crypto, +}; + +static struct zip_dfx_item zip_dfx_files[] = { + {"send_cnt", offsetof(struct hisi_zip_dfx, send_cnt)}, + {"recv_cnt", offsetof(struct hisi_zip_dfx, recv_cnt)}, + {"send_busy_cnt", offsetof(struct hisi_zip_dfx, send_busy_cnt)}, + {"err_bd_cnt", offsetof(struct hisi_zip_dfx, err_bd_cnt)}, +}; + +static const struct hisi_zip_hw_error zip_hw_error[] = { + { .int_msk = BIT(0), .msg = "zip_ecc_1bitt_err" }, + { .int_msk = BIT(1), .msg = "zip_ecc_2bit_err" }, + { .int_msk = BIT(2), .msg = "zip_axi_rresp_err" }, + { .int_msk = BIT(3), .msg = "zip_axi_bresp_err" }, + { .int_msk = BIT(4), .msg = "zip_src_addr_parse_err" }, + { .int_msk = BIT(5), .msg = "zip_dst_addr_parse_err" }, + { .int_msk = BIT(6), .msg = "zip_pre_in_addr_err" }, + { .int_msk = BIT(7), .msg = "zip_pre_in_data_err" }, + { .int_msk = BIT(8), .msg = "zip_com_inf_err" }, + { .int_msk = BIT(9), .msg = "zip_enc_inf_err" }, + { .int_msk = BIT(10), .msg = "zip_pre_out_err" }, + { .int_msk = BIT(11), .msg = "zip_axi_poison_err" }, + { .int_msk = BIT(12), .msg = "zip_sva_err" }, + { /* sentinel */ } +}; + +enum ctrl_debug_file_index { + HZIP_CLEAR_ENABLE, + HZIP_DEBUG_FILE_NUM, +}; + +static const char * const ctrl_debug_file_name[] = { + [HZIP_CLEAR_ENABLE] = "clear_enable", +}; + +struct ctrl_debug_file { + enum ctrl_debug_file_index index; + spinlock_t lock; + struct hisi_zip_ctrl *ctrl; +}; + +/* + * One ZIP controller has one PF and multiple VFs, some global configurations + * which PF has need this structure. + * + * Just relevant for PF. + */ +struct hisi_zip_ctrl { + struct hisi_zip *hisi_zip; + struct ctrl_debug_file files[HZIP_DEBUG_FILE_NUM]; +}; + +enum zip_cap_type { + ZIP_QM_NFE_MASK_CAP = 0x0, + ZIP_QM_RESET_MASK_CAP, + ZIP_QM_OOO_SHUTDOWN_MASK_CAP, + ZIP_QM_CE_MASK_CAP, + ZIP_NFE_MASK_CAP, + ZIP_RESET_MASK_CAP, + ZIP_OOO_SHUTDOWN_MASK_CAP, + ZIP_CE_MASK_CAP, + ZIP_CLUSTER_NUM_CAP, + ZIP_CORE_TYPE_NUM_CAP, + ZIP_CORE_NUM_CAP, + ZIP_CLUSTER_COMP_NUM_CAP, + ZIP_CLUSTER_DECOMP_NUM_CAP, + ZIP_DECOMP_ENABLE_BITMAP, + ZIP_COMP_ENABLE_BITMAP, + ZIP_DRV_ALG_BITMAP, + ZIP_DEV_ALG_BITMAP, + ZIP_CORE1_ALG_BITMAP, + ZIP_CORE2_ALG_BITMAP, + ZIP_CORE3_ALG_BITMAP, + ZIP_CORE4_ALG_BITMAP, + ZIP_CORE5_ALG_BITMAP, + ZIP_CAP_MAX +}; + +static struct hisi_qm_cap_info zip_basic_cap_info[] = { + {ZIP_QM_NFE_MASK_CAP, 0x3124, 0, GENMASK(31, 0), 0x0, 0x1C57, 0x7C77}, + {ZIP_QM_RESET_MASK_CAP, 0x3128, 0, GENMASK(31, 0), 0x0, 0xC57, 0x6C77}, + {ZIP_QM_OOO_SHUTDOWN_MASK_CAP, 0x3128, 0, GENMASK(31, 0), 0x0, 0x4, 0x6C77}, + {ZIP_QM_CE_MASK_CAP, 0x312C, 0, GENMASK(31, 0), 0x0, 0x8, 0x8}, + {ZIP_NFE_MASK_CAP, 0x3130, 0, GENMASK(31, 0), 0x0, 0x7FE, 0x1FFE}, + {ZIP_RESET_MASK_CAP, 0x3134, 0, GENMASK(31, 0), 0x0, 0x7FE, 0x7FE}, + {ZIP_OOO_SHUTDOWN_MASK_CAP, 0x3134, 0, GENMASK(31, 0), 0x0, 0x2, 0x7FE}, + {ZIP_CE_MASK_CAP, 0x3138, 0, GENMASK(31, 0), 0x0, 0x1, 0x1}, + {ZIP_CLUSTER_NUM_CAP, 0x313C, 28, GENMASK(3, 0), 0x1, 0x1, 0x1}, + {ZIP_CORE_TYPE_NUM_CAP, 0x313C, 24, GENMASK(3, 0), 0x2, 0x2, 0x2}, + {ZIP_CORE_NUM_CAP, 0x313C, 16, GENMASK(7, 0), 0x8, 0x8, 0x5}, + {ZIP_CLUSTER_COMP_NUM_CAP, 0x313C, 8, GENMASK(7, 0), 0x2, 0x2, 0x2}, + {ZIP_CLUSTER_DECOMP_NUM_CAP, 0x313C, 0, GENMASK(7, 0), 0x6, 0x6, 0x3}, + {ZIP_DECOMP_ENABLE_BITMAP, 0x3140, 16, GENMASK(15, 0), 0xFC, 0xFC, 0x1C}, + {ZIP_COMP_ENABLE_BITMAP, 0x3140, 0, GENMASK(15, 0), 0x3, 0x3, 0x3}, + {ZIP_DRV_ALG_BITMAP, 0x3144, 0, GENMASK(31, 0), 0x0, 0x0, 0x30}, + {ZIP_DEV_ALG_BITMAP, 0x3148, 0, GENMASK(31, 0), 0xF, 0xF, 0x3F}, + {ZIP_CORE1_ALG_BITMAP, 0x314C, 0, GENMASK(31, 0), 0x5, 0x5, 0xD5}, + {ZIP_CORE2_ALG_BITMAP, 0x3150, 0, GENMASK(31, 0), 0x5, 0x5, 0xD5}, + {ZIP_CORE3_ALG_BITMAP, 0x3154, 0, GENMASK(31, 0), 0xA, 0xA, 0x2A}, + {ZIP_CORE4_ALG_BITMAP, 0x3158, 0, GENMASK(31, 0), 0xA, 0xA, 0x2A}, + {ZIP_CORE5_ALG_BITMAP, 0x315C, 0, GENMASK(31, 0), 0xA, 0xA, 0x2A}, + {ZIP_CAP_MAX, 0x317c, 0, GENMASK(0, 0), 0x0, 0x0, 0x0} +}; + +static const struct hisi_qm_cap_query_info zip_cap_query_info[] = { + {QM_RAS_NFE_TYPE, "QM_RAS_NFE_TYPE ", 0x3124, 0x0, 0x1C57, 0x7C77}, + {QM_RAS_NFE_RESET, "QM_RAS_NFE_RESET ", 0x3128, 0x0, 0xC57, 0x6C77}, + {QM_RAS_CE_TYPE, "QM_RAS_CE_TYPE ", 0x312C, 0x0, 0x8, 0x8}, + {ZIP_RAS_NFE_TYPE, "ZIP_RAS_NFE_TYPE ", 0x3130, 0x0, 0x7FE, 0x1FFE}, + {ZIP_RAS_NFE_RESET, "ZIP_RAS_NFE_RESET ", 0x3134, 0x0, 0x7FE, 0x7FE}, + {ZIP_RAS_CE_TYPE, "ZIP_RAS_CE_TYPE ", 0x3138, 0x0, 0x1, 0x1}, + {ZIP_CORE_INFO, "ZIP_CORE_INFO ", 0x313C, 0x12080206, 0x12080206, 0x12050203}, + {ZIP_CORE_EN, "ZIP_CORE_EN ", 0x3140, 0xFC0003, 0xFC0003, 0x1C0003}, + {ZIP_DRV_ALG_BITMAP_TB, "ZIP_DRV_ALG_BITMAP ", 0x3144, 0x0, 0x0, 0x30}, + {ZIP_ALG_BITMAP, "ZIP_ALG_BITMAP ", 0x3148, 0xF, 0xF, 0x3F}, + {ZIP_CORE1_BITMAP, "ZIP_CORE1_BITMAP ", 0x314C, 0x5, 0x5, 0xD5}, + {ZIP_CORE2_BITMAP, "ZIP_CORE2_BITMAP ", 0x3150, 0x5, 0x5, 0xD5}, + {ZIP_CORE3_BITMAP, "ZIP_CORE3_BITMAP ", 0x3154, 0xA, 0xA, 0x2A}, + {ZIP_CORE4_BITMAP, "ZIP_CORE4_BITMAP ", 0x3158, 0xA, 0xA, 0x2A}, + {ZIP_CORE5_BITMAP, "ZIP_CORE5_BITMAP ", 0x315C, 0xA, 0xA, 0x2A}, +}; + +static const struct debugfs_reg32 hzip_dfx_regs[] = { + {"HZIP_GET_BD_NUM ", 0x00}, + {"HZIP_GET_RIGHT_BD ", 0x04}, + {"HZIP_GET_ERROR_BD ", 0x08}, + {"HZIP_DONE_BD_NUM ", 0x0c}, + {"HZIP_WORK_CYCLE ", 0x10}, + {"HZIP_IDLE_CYCLE ", 0x18}, + {"HZIP_MAX_DELAY ", 0x20}, + {"HZIP_MIN_DELAY ", 0x24}, + {"HZIP_AVG_DELAY ", 0x28}, + {"HZIP_MEM_VISIBLE_DATA ", 0x30}, + {"HZIP_MEM_VISIBLE_ADDR ", 0x34}, + {"HZIP_CONSUMED_BYTE ", 0x38}, + {"HZIP_PRODUCED_BYTE ", 0x40}, + {"HZIP_COMP_INF ", 0x70}, + {"HZIP_PRE_OUT ", 0x78}, + {"HZIP_BD_RD ", 0x7c}, + {"HZIP_BD_WR ", 0x80}, + {"HZIP_GET_BD_AXI_ERR_NUM ", 0x84}, + {"HZIP_GET_BD_PARSE_ERR_NUM ", 0x88}, + {"HZIP_ADD_BD_AXI_ERR_NUM ", 0x8c}, + {"HZIP_DECOMP_STF_RELOAD_CURR_ST ", 0x94}, + {"HZIP_DECOMP_LZ77_CURR_ST ", 0x9c}, +}; + +static const struct debugfs_reg32 hzip_com_dfx_regs[] = { + {"HZIP_CLOCK_GATE_CTRL ", 0x301004}, + {"HZIP_CORE_INT_RAS_CE_ENB ", 0x301160}, + {"HZIP_CORE_INT_RAS_NFE_ENB ", 0x301164}, + {"HZIP_CORE_INT_RAS_FE_ENB ", 0x301168}, + {"HZIP_UNCOM_ERR_RAS_CTRL ", 0x30116C}, +}; + +static const struct debugfs_reg32 hzip_dump_dfx_regs[] = { + {"HZIP_GET_BD_NUM ", 0x00}, + {"HZIP_GET_RIGHT_BD ", 0x04}, + {"HZIP_GET_ERROR_BD ", 0x08}, + {"HZIP_DONE_BD_NUM ", 0x0c}, + {"HZIP_MAX_DELAY ", 0x20}, +}; + +/* define the ZIP's dfx regs region and region length */ +static struct dfx_diff_registers hzip_diff_regs[] = { + { + .reg_offset = HZIP_CORE_DFX_BASE, + .reg_len = HZIP_CORE_REGS_BASE_LEN, + }, { + .reg_offset = HZIP_CORE_DFX_COMP_0, + .reg_len = HZIP_CORE_REGS_DFX_LEN, + }, { + .reg_offset = HZIP_CORE_DFX_COMP_1, + .reg_len = HZIP_CORE_REGS_DFX_LEN, + }, { + .reg_offset = HZIP_CORE_DFX_DECOMP_0, + .reg_len = HZIP_CORE_REGS_DFX_LEN, + }, { + .reg_offset = HZIP_CORE_DFX_DECOMP_1, + .reg_len = HZIP_CORE_REGS_DFX_LEN, + }, { + .reg_offset = HZIP_CORE_DFX_DECOMP_2, + .reg_len = HZIP_CORE_REGS_DFX_LEN, + }, { + .reg_offset = HZIP_CORE_DFX_DECOMP_3, + .reg_len = HZIP_CORE_REGS_DFX_LEN, + }, { + .reg_offset = HZIP_CORE_DFX_DECOMP_4, + .reg_len = HZIP_CORE_REGS_DFX_LEN, + }, { + .reg_offset = HZIP_CORE_DFX_DECOMP_5, + .reg_len = HZIP_CORE_REGS_DFX_LEN, + }, +}; + +static const char *zip_channel_name[HZIP_MAX_CHANNEL_NUM] = { + "COMPRESS", + "DECOMPRESS", + "DAE" +}; + +static int hzip_diff_regs_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + + hisi_qm_acc_diff_regs_dump(qm, s, qm->debug.acc_diff_regs, + ARRAY_SIZE(hzip_diff_regs)); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(hzip_diff_regs); + +static int perf_mode_set(const char *val, const struct kernel_param *kp) +{ + int ret; + u32 n; + + if (!val) + return -EINVAL; + + ret = kstrtou32(val, 10, &n); + if (ret != 0 || (n != HZIP_HIGH_COMP_PERF && + n != HZIP_HIGH_COMP_RATE)) + return -EINVAL; + + return param_set_int(val, kp); +} + +static const struct kernel_param_ops zip_com_perf_ops = { + .set = perf_mode_set, + .get = param_get_int, +}; + +/* + * perf_mode = 0 means enable high compression rate mode, + * perf_mode = 1 means enable high compression performance mode. + * These two modes only apply to the compression direction. + */ +static u32 perf_mode = HZIP_HIGH_COMP_RATE; +module_param_cb(perf_mode, &zip_com_perf_ops, &perf_mode, 0444); +MODULE_PARM_DESC(perf_mode, "ZIP high perf mode 0(default), 1(enable)"); + +static const struct kernel_param_ops zip_uacce_mode_ops = { + .set = uacce_mode_set, + .get = param_get_int, +}; + +/* + * uacce_mode = 0 means zip only register to crypto, + * uacce_mode = 1 means zip both register to crypto and uacce. + */ +static u32 uacce_mode = UACCE_MODE_NOUACCE; +module_param_cb(uacce_mode, &zip_uacce_mode_ops, &uacce_mode, 0444); +MODULE_PARM_DESC(uacce_mode, UACCE_MODE_DESC); + +static bool pf_q_num_flag; +static int pf_q_num_set(const char *val, const struct kernel_param *kp) +{ + pf_q_num_flag = true; + + return hisi_qm_q_num_set(val, kp, PCI_DEVICE_ID_HUAWEI_ZIP_PF); +} + +static const struct kernel_param_ops pf_q_num_ops = { + .set = pf_q_num_set, + .get = param_get_int, +}; + +static u32 pf_q_num = HZIP_PF_DEF_Q_NUM; +module_param_cb(pf_q_num, &pf_q_num_ops, &pf_q_num, 0444); +MODULE_PARM_DESC(pf_q_num, "Number of queues in PF(v1 2-4096, v2 2-1024)"); + +static const struct kernel_param_ops vfs_num_ops = { + .set = vfs_num_set, + .get = param_get_int, +}; + +static u32 vfs_num; +module_param_cb(vfs_num, &vfs_num_ops, &vfs_num, 0444); +MODULE_PARM_DESC(vfs_num, "Number of VFs to enable(1-63), 0(default)"); + +static const struct pci_device_id hisi_zip_dev_ids[] = { + { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HUAWEI_ZIP_PF) }, + { PCI_DEVICE(PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HUAWEI_ZIP_VF) }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, hisi_zip_dev_ids); + +int zip_create_qps(struct hisi_qp **qps, int qp_num, int node, u8 *alg_type) +{ + if (node == NUMA_NO_NODE) + node = cpu_to_node(raw_smp_processor_id()); + + return hisi_qm_alloc_qps_node(&zip_devices, qp_num, alg_type, node, qps); +} + +bool hisi_zip_alg_support(struct hisi_qm *qm, u32 alg) +{ + u32 cap_val; + + cap_val = qm->cap_tables.dev_cap_table[ZIP_DRV_ALG_BITMAP_TB].cap_val; + if ((alg & cap_val) == alg) + return true; + + return false; +} + +static void hisi_zip_literal_set(struct hisi_qm *qm) +{ + u32 val; + + if (qm->ver < QM_HW_V3) + return; + + val = readl_relaxed(qm->io_base + HZIP_LIT_LEN_EN_OFFSET); + val &= ~HZIP_LIT_LEN_EN_EN; + + /* enable literal length in stream mode compression */ + writel(val, qm->io_base + HZIP_LIT_LEN_EN_OFFSET); +} + +static void hisi_zip_set_high_perf(struct hisi_qm *qm) +{ + u32 val; + + val = readl_relaxed(qm->io_base + HZIP_HIGH_PERF_OFFSET); + if (perf_mode == HZIP_HIGH_COMP_PERF) + val |= HZIP_HIGH_COMP_PERF; + else + val &= ~HZIP_HIGH_COMP_PERF; + + /* Set perf mode */ + writel(val, qm->io_base + HZIP_HIGH_PERF_OFFSET); +} + +static int hisi_zip_wait_sva_ready(struct hisi_qm *qm, __u32 offset, __u32 mask) +{ + u32 val, try_times = 0; + u8 count = 0; + + /* + * Read the register value every 10-20us. If the value is 0 for three + * consecutive times, the SVA module is ready. + */ + do { + val = readl(qm->io_base + offset); + if (val & mask) + count = 0; + else if (++count == HZIP_READ_SVA_STATUS_TIMES) + break; + + usleep_range(HZIP_WAIT_US_MIN, HZIP_WAIT_US_MAX); + } while (++try_times < HZIP_WAIT_SVA_READY); + + if (try_times == HZIP_WAIT_SVA_READY) { + pci_err(qm->pdev, "failed to wait sva prefetch ready\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static void hisi_zip_close_sva_prefetch(struct hisi_qm *qm) +{ + u32 val; + int ret; + + if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps)) + return; + + val = readl_relaxed(qm->io_base + HZIP_PREFETCH_CFG); + val |= HZIP_SVA_PREFETCH_DISABLE; + writel(val, qm->io_base + HZIP_PREFETCH_CFG); + + ret = readl_relaxed_poll_timeout(qm->io_base + HZIP_SVA_TRANS, + val, !(val & HZIP_SVA_DISABLE_READY), + HZIP_DELAY_1_US, HZIP_POLL_TIMEOUT_US); + if (ret) + pci_err(qm->pdev, "failed to close sva prefetch\n"); + + (void)hisi_zip_wait_sva_ready(qm, HZIP_SVA_TRANS, HZIP_SVA_STALL_NUM); +} + +static void hisi_zip_open_sva_prefetch(struct hisi_qm *qm) +{ + u32 val; + int ret; + + if (!test_bit(QM_SUPPORT_SVA_PREFETCH, &qm->caps)) + return; + + /* Enable prefetch */ + val = readl_relaxed(qm->io_base + HZIP_PREFETCH_CFG); + val &= HZIP_PREFETCH_ENABLE; + writel(val, qm->io_base + HZIP_PREFETCH_CFG); + + ret = readl_relaxed_poll_timeout(qm->io_base + HZIP_PREFETCH_CFG, + val, !(val & HZIP_SVA_PREFETCH_DISABLE), + HZIP_DELAY_1_US, HZIP_POLL_TIMEOUT_US); + if (ret) { + pci_err(qm->pdev, "failed to open sva prefetch\n"); + hisi_zip_close_sva_prefetch(qm); + return; + } + + ret = hisi_zip_wait_sva_ready(qm, HZIP_SVA_TRANS, HZIP_SVA_PREFETCH_NUM); + if (ret) + hisi_zip_close_sva_prefetch(qm); +} + +static void hisi_zip_enable_clock_gate(struct hisi_qm *qm) +{ + u32 val; + + if (qm->ver < QM_HW_V3) + return; + + val = readl(qm->io_base + HZIP_CLOCK_GATE_CTRL); + val |= HZIP_CLOCK_GATED_EN; + writel(val, qm->io_base + HZIP_CLOCK_GATE_CTRL); + + val = readl(qm->io_base + HZIP_PEH_CFG_AUTO_GATE); + val |= HZIP_PEH_CFG_AUTO_GATE_EN; + writel(val, qm->io_base + HZIP_PEH_CFG_AUTO_GATE); +} + +static int hisi_zip_set_user_domain_and_cache(struct hisi_qm *qm) +{ + void __iomem *base = qm->io_base; + u32 dcomp_bm, comp_bm; + u32 zip_core_en; + int ret; + + /* qm user domain */ + writel(AXUSER_BASE, base + QM_ARUSER_M_CFG_1); + writel(ARUSER_M_CFG_ENABLE, base + QM_ARUSER_M_CFG_ENABLE); + writel(AXUSER_BASE, base + QM_AWUSER_M_CFG_1); + writel(AWUSER_M_CFG_ENABLE, base + QM_AWUSER_M_CFG_ENABLE); + writel(WUSER_M_CFG_ENABLE, base + QM_WUSER_M_CFG_ENABLE); + + /* qm cache */ + writel(AXI_M_CFG, base + QM_AXI_M_CFG); + writel(AXI_M_CFG_ENABLE, base + QM_AXI_M_CFG_ENABLE); + + /* disable FLR triggered by BME(bus master enable) */ + writel(PEH_AXUSER_CFG, base + QM_PEH_AXUSER_CFG); + writel(PEH_AXUSER_CFG_ENABLE, base + QM_PEH_AXUSER_CFG_ENABLE); + + /* cache */ + writel(HZIP_CACHE_ALL_EN, base + HZIP_PORT_ARCA_CHE_0); + writel(HZIP_CACHE_ALL_EN, base + HZIP_PORT_ARCA_CHE_1); + writel(HZIP_CACHE_ALL_EN, base + HZIP_PORT_AWCA_CHE_0); + writel(HZIP_CACHE_ALL_EN, base + HZIP_PORT_AWCA_CHE_1); + + /* user domain configurations */ + writel(AXUSER_BASE, base + HZIP_BD_RUSER_32_63); + writel(AXUSER_BASE, base + HZIP_BD_WUSER_32_63); + + if (qm->use_sva && qm->ver == QM_HW_V2) { + writel(AXUSER_BASE | AXUSER_SSV, base + HZIP_DATA_RUSER_32_63); + writel(AXUSER_BASE | AXUSER_SSV, base + HZIP_DATA_WUSER_32_63); + writel(AXUSER_BASE | AXUSER_SSV, base + HZIP_SGL_RUSER_32_63); + } else { + writel(AXUSER_BASE, base + HZIP_DATA_RUSER_32_63); + writel(AXUSER_BASE, base + HZIP_DATA_WUSER_32_63); + writel(AXUSER_BASE, base + HZIP_SGL_RUSER_32_63); + } + hisi_zip_open_sva_prefetch(qm); + + /* let's open all compression/decompression cores */ + + zip_core_en = qm->cap_tables.dev_cap_table[ZIP_CORE_EN].cap_val; + dcomp_bm = (zip_core_en >> zip_basic_cap_info[ZIP_DECOMP_ENABLE_BITMAP].shift) & + zip_basic_cap_info[ZIP_DECOMP_ENABLE_BITMAP].mask; + comp_bm = (zip_core_en >> zip_basic_cap_info[ZIP_COMP_ENABLE_BITMAP].shift) & + zip_basic_cap_info[ZIP_COMP_ENABLE_BITMAP].mask; + writel(HZIP_DECOMP_CHECK_ENABLE | dcomp_bm | comp_bm, base + HZIP_CLOCK_GATE_CTRL); + + /* enable sqc,cqc writeback */ + writel(SQC_CACHE_ENABLE | CQC_CACHE_ENABLE | SQC_CACHE_WB_ENABLE | + CQC_CACHE_WB_ENABLE | FIELD_PREP(SQC_CACHE_WB_THRD, 1) | + FIELD_PREP(CQC_CACHE_WB_THRD, 1), base + QM_CACHE_CTL); + + hisi_zip_set_high_perf(qm); + hisi_zip_literal_set(qm); + hisi_zip_enable_clock_gate(qm); + + ret = hisi_dae_set_user_domain(qm); + if (ret) + goto close_sva_prefetch; + + return 0; + +close_sva_prefetch: + hisi_zip_close_sva_prefetch(qm); + return ret; +} + +static void hisi_zip_master_ooo_ctrl(struct hisi_qm *qm, bool enable) +{ + u32 val1, val2; + + val1 = readl(qm->io_base + HZIP_SOFT_CTRL_ZIP_CONTROL); + if (enable) { + val1 |= HZIP_AXI_SHUTDOWN_ENABLE; + val2 = qm->err_info.dev_err.shutdown_mask; + } else { + val1 &= ~HZIP_AXI_SHUTDOWN_ENABLE; + val2 = 0x0; + } + + if (qm->ver > QM_HW_V2) + writel(val2, qm->io_base + HZIP_OOO_SHUTDOWN_SEL); + + writel(val1, qm->io_base + HZIP_SOFT_CTRL_ZIP_CONTROL); +} + +static void hisi_zip_hw_error_enable(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *dev_err = &qm->err_info.dev_err; + u32 err_mask = dev_err->ce | dev_err->nfe | dev_err->fe; + + if (qm->ver == QM_HW_V1) { + writel(HZIP_CORE_INT_MASK_ALL, + qm->io_base + HZIP_CORE_INT_MASK_REG); + dev_info(&qm->pdev->dev, "Does not support hw error handle\n"); + return; + } + + /* clear ZIP hw error source if having */ + writel(HZIP_CORE_RAS_CLEAR_ALL, qm->io_base + HZIP_CORE_INT_SOURCE); + + /* configure error type */ + writel(dev_err->ce, qm->io_base + HZIP_CORE_INT_RAS_CE_ENB); + writel(dev_err->fe, qm->io_base + HZIP_CORE_INT_RAS_FE_ENB); + writel(dev_err->nfe, qm->io_base + HZIP_CORE_INT_RAS_NFE_ENB); + + hisi_zip_master_ooo_ctrl(qm, true); + + /* enable ZIP hw error interrupts */ + writel(~err_mask, qm->io_base + HZIP_CORE_INT_MASK_REG); + + hisi_dae_hw_error_enable(qm); +} + +static void hisi_zip_hw_error_disable(struct hisi_qm *qm) +{ + /* disable ZIP hw error interrupts */ + writel(HZIP_CORE_INT_MASK_ALL, qm->io_base + HZIP_CORE_INT_MASK_REG); + + hisi_zip_master_ooo_ctrl(qm, false); + + hisi_dae_hw_error_disable(qm); +} + +static inline struct hisi_qm *file_to_qm(struct ctrl_debug_file *file) +{ + struct hisi_zip *hisi_zip = file->ctrl->hisi_zip; + + return &hisi_zip->qm; +} + +static u32 clear_enable_read(struct hisi_qm *qm) +{ + return readl(qm->io_base + HZIP_SOFT_CTRL_CNT_CLR_CE) & + HZIP_SOFT_CTRL_CNT_CLR_CE_BIT; +} + +static int clear_enable_write(struct hisi_qm *qm, u32 val) +{ + u32 tmp; + + if (val != 1 && val != 0) + return -EINVAL; + + tmp = (readl(qm->io_base + HZIP_SOFT_CTRL_CNT_CLR_CE) & + ~HZIP_SOFT_CTRL_CNT_CLR_CE_BIT) | val; + writel(tmp, qm->io_base + HZIP_SOFT_CTRL_CNT_CLR_CE); + + return 0; +} + +static ssize_t hisi_zip_ctrl_debug_read(struct file *filp, char __user *buf, + size_t count, loff_t *pos) +{ + struct ctrl_debug_file *file = filp->private_data; + struct hisi_qm *qm = file_to_qm(file); + char tbuf[HZIP_BUF_SIZE]; + u32 val; + int ret; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + spin_lock_irq(&file->lock); + switch (file->index) { + case HZIP_CLEAR_ENABLE: + val = clear_enable_read(qm); + break; + default: + goto err_input; + } + spin_unlock_irq(&file->lock); + + hisi_qm_put_dfx_access(qm); + ret = scnprintf(tbuf, sizeof(tbuf), "%u\n", val); + return simple_read_from_buffer(buf, count, pos, tbuf, ret); + +err_input: + spin_unlock_irq(&file->lock); + hisi_qm_put_dfx_access(qm); + return -EINVAL; +} + +static ssize_t hisi_zip_ctrl_debug_write(struct file *filp, + const char __user *buf, + size_t count, loff_t *pos) +{ + struct ctrl_debug_file *file = filp->private_data; + struct hisi_qm *qm = file_to_qm(file); + char tbuf[HZIP_BUF_SIZE]; + unsigned long val; + int len, ret; + + if (*pos != 0) + return 0; + + if (count >= HZIP_BUF_SIZE) + return -ENOSPC; + + len = simple_write_to_buffer(tbuf, HZIP_BUF_SIZE - 1, pos, buf, count); + if (len < 0) + return len; + + tbuf[len] = '\0'; + ret = kstrtoul(tbuf, 0, &val); + if (ret) + return ret; + + ret = hisi_qm_get_dfx_access(qm); + if (ret) + return ret; + + spin_lock_irq(&file->lock); + switch (file->index) { + case HZIP_CLEAR_ENABLE: + ret = clear_enable_write(qm, val); + if (ret) + goto err_input; + break; + default: + ret = -EINVAL; + goto err_input; + } + + ret = count; + +err_input: + spin_unlock_irq(&file->lock); + hisi_qm_put_dfx_access(qm); + return ret; +} + +static const struct file_operations ctrl_debug_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = hisi_zip_ctrl_debug_read, + .write = hisi_zip_ctrl_debug_write, +}; + +static int zip_debugfs_atomic64_set(void *data, u64 val) +{ + if (val) + return -EINVAL; + + atomic64_set((atomic64_t *)data, 0); + + return 0; +} + +static int zip_debugfs_atomic64_get(void *data, u64 *val) +{ + *val = atomic64_read((atomic64_t *)data); + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(zip_atomic64_ops, zip_debugfs_atomic64_get, + zip_debugfs_atomic64_set, "%llu\n"); + +static int hisi_zip_regs_show(struct seq_file *s, void *unused) +{ + hisi_qm_regs_dump(s, s->private); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(hisi_zip_regs); + +static void __iomem *get_zip_core_addr(struct hisi_qm *qm, int core_num) +{ + u8 zip_comp_core_num; + u32 zip_core_info; + + zip_core_info = qm->cap_tables.dev_cap_table[ZIP_CORE_INFO].cap_val; + zip_comp_core_num = (zip_core_info >> zip_basic_cap_info[ZIP_CLUSTER_COMP_NUM_CAP].shift) & + zip_basic_cap_info[ZIP_CLUSTER_COMP_NUM_CAP].mask; + + if (core_num < zip_comp_core_num) + return qm->io_base + HZIP_CORE_DFX_BASE + + (core_num + 1) * HZIP_CORE_ADDR_INTRVL; + + return qm->io_base + HZIP_CORE_DFX_DECOMP_BASE + + (core_num - zip_comp_core_num) * HZIP_CORE_ADDR_INTRVL; +} + +static int hisi_zip_core_debug_init(struct hisi_qm *qm) +{ + u32 zip_core_num, zip_comp_core_num; + struct device *dev = &qm->pdev->dev; + struct debugfs_regset32 *regset; + u32 zip_core_info; + struct dentry *tmp_d; + char buf[HZIP_BUF_SIZE]; + int i; + + zip_core_info = qm->cap_tables.dev_cap_table[ZIP_CORE_INFO].cap_val; + zip_core_num = (zip_core_info >> zip_basic_cap_info[ZIP_CORE_NUM_CAP].shift) & + zip_basic_cap_info[ZIP_CORE_NUM_CAP].mask; + zip_comp_core_num = (zip_core_info >> zip_basic_cap_info[ZIP_CLUSTER_COMP_NUM_CAP].shift) & + zip_basic_cap_info[ZIP_CLUSTER_COMP_NUM_CAP].mask; + + for (i = 0; i < zip_core_num; i++) { + if (i < zip_comp_core_num) + scnprintf(buf, sizeof(buf), "comp_core%d", i); + else + scnprintf(buf, sizeof(buf), "decomp_core%d", + i - zip_comp_core_num); + + regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL); + if (!regset) + return -ENOENT; + + regset->regs = hzip_dfx_regs; + regset->nregs = ARRAY_SIZE(hzip_dfx_regs); + regset->base = get_zip_core_addr(qm, i); + regset->dev = dev; + + tmp_d = debugfs_create_dir(buf, qm->debug.debug_root); + debugfs_create_file("regs", 0444, tmp_d, regset, + &hisi_zip_regs_fops); + } + + return 0; +} + +static int zip_cap_regs_show(struct seq_file *s, void *unused) +{ + struct hisi_qm *qm = s->private; + u32 i, size; + + size = qm->cap_tables.qm_cap_size; + for (i = 0; i < size; i++) + seq_printf(s, "%s= 0x%08x\n", qm->cap_tables.qm_cap_table[i].name, + qm->cap_tables.qm_cap_table[i].cap_val); + + size = qm->cap_tables.dev_cap_size; + for (i = 0; i < size; i++) + seq_printf(s, "%s= 0x%08x\n", qm->cap_tables.dev_cap_table[i].name, + qm->cap_tables.dev_cap_table[i].cap_val); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(zip_cap_regs); + +static void hisi_zip_dfx_debug_init(struct hisi_qm *qm) +{ + struct dfx_diff_registers *hzip_regs = qm->debug.acc_diff_regs; + struct hisi_zip *zip = container_of(qm, struct hisi_zip, qm); + struct hisi_zip_dfx *dfx = &zip->dfx; + struct dentry *tmp_dir; + void *data; + int i; + + tmp_dir = debugfs_create_dir("zip_dfx", qm->debug.debug_root); + for (i = 0; i < ARRAY_SIZE(zip_dfx_files); i++) { + data = (atomic64_t *)((uintptr_t)dfx + zip_dfx_files[i].offset); + debugfs_create_file(zip_dfx_files[i].name, + 0644, tmp_dir, data, + &zip_atomic64_ops); + } + + if (qm->fun_type == QM_HW_PF && hzip_regs) + debugfs_create_file("diff_regs", 0444, tmp_dir, + qm, &hzip_diff_regs_fops); + + debugfs_create_file("cap_regs", CAP_FILE_PERMISSION, + qm->debug.debug_root, qm, &zip_cap_regs_fops); +} + +static int hisi_zip_ctrl_debug_init(struct hisi_qm *qm) +{ + struct hisi_zip *zip = container_of(qm, struct hisi_zip, qm); + int i; + + for (i = HZIP_CLEAR_ENABLE; i < HZIP_DEBUG_FILE_NUM; i++) { + spin_lock_init(&zip->ctrl->files[i].lock); + zip->ctrl->files[i].ctrl = zip->ctrl; + zip->ctrl->files[i].index = i; + + debugfs_create_file(ctrl_debug_file_name[i], 0600, + qm->debug.debug_root, + zip->ctrl->files + i, + &ctrl_debug_fops); + } + + return hisi_zip_core_debug_init(qm); +} + +static int hisi_zip_debugfs_init(struct hisi_qm *qm) +{ + struct device *dev = &qm->pdev->dev; + int ret; + + ret = hisi_qm_regs_debugfs_init(qm, hzip_diff_regs, ARRAY_SIZE(hzip_diff_regs)); + if (ret) { + dev_warn(dev, "Failed to init ZIP diff regs!\n"); + return ret; + } + + qm->debug.sqe_mask_offset = HZIP_SQE_MASK_OFFSET; + qm->debug.sqe_mask_len = HZIP_SQE_MASK_LEN; + qm->debug.debug_root = debugfs_create_dir(dev_name(dev), + hzip_debugfs_root); + + hisi_qm_debug_init(qm); + + if (qm->fun_type == QM_HW_PF) { + ret = hisi_zip_ctrl_debug_init(qm); + if (ret) + goto debugfs_remove; + } + + hisi_zip_dfx_debug_init(qm); + + return 0; + +debugfs_remove: + debugfs_remove_recursive(qm->debug.debug_root); + hisi_qm_regs_debugfs_uninit(qm, ARRAY_SIZE(hzip_diff_regs)); + return ret; +} + +/* hisi_zip_debug_regs_clear() - clear the zip debug regs */ +static void hisi_zip_debug_regs_clear(struct hisi_qm *qm) +{ + u32 zip_core_info; + u8 zip_core_num; + int i, j; + + zip_core_info = qm->cap_tables.dev_cap_table[ZIP_CORE_INFO].cap_val; + zip_core_num = (zip_core_info >> zip_basic_cap_info[ZIP_CORE_NUM_CAP].shift) & + zip_basic_cap_info[ZIP_CORE_NUM_CAP].mask; + + /* enable register read_clear bit */ + writel(HZIP_RD_CNT_CLR_CE_EN, qm->io_base + HZIP_SOFT_CTRL_CNT_CLR_CE); + for (i = 0; i < zip_core_num; i++) + for (j = 0; j < ARRAY_SIZE(hzip_dfx_regs); j++) + readl(get_zip_core_addr(qm, i) + + hzip_dfx_regs[j].offset); + + /* disable register read_clear bit */ + writel(0x0, qm->io_base + HZIP_SOFT_CTRL_CNT_CLR_CE); + + hisi_qm_debug_regs_clear(qm); +} + +static void hisi_zip_debugfs_exit(struct hisi_qm *qm) +{ + debugfs_remove_recursive(qm->debug.debug_root); + + hisi_qm_regs_debugfs_uninit(qm, ARRAY_SIZE(hzip_diff_regs)); + + if (qm->fun_type == QM_HW_PF) { + hisi_zip_debug_regs_clear(qm); + qm->debug.curr_qm_qp_num = 0; + } +} + +static int hisi_zip_show_last_regs_init(struct hisi_qm *qm) +{ + int core_dfx_regs_num = ARRAY_SIZE(hzip_dump_dfx_regs); + int com_dfx_regs_num = ARRAY_SIZE(hzip_com_dfx_regs); + struct qm_debug *debug = &qm->debug; + void __iomem *io_base; + u32 zip_core_info; + u32 zip_core_num; + int i, j, idx; + + zip_core_info = qm->cap_tables.dev_cap_table[ZIP_CORE_INFO].cap_val; + zip_core_num = (zip_core_info >> zip_basic_cap_info[ZIP_CORE_NUM_CAP].shift) & + zip_basic_cap_info[ZIP_CORE_NUM_CAP].mask; + + debug->last_words = kcalloc(core_dfx_regs_num * zip_core_num + com_dfx_regs_num, + sizeof(unsigned int), GFP_KERNEL); + if (!debug->last_words) + return -ENOMEM; + + for (i = 0; i < com_dfx_regs_num; i++) { + io_base = qm->io_base + hzip_com_dfx_regs[i].offset; + debug->last_words[i] = readl_relaxed(io_base); + } + + for (i = 0; i < zip_core_num; i++) { + io_base = get_zip_core_addr(qm, i); + for (j = 0; j < core_dfx_regs_num; j++) { + idx = com_dfx_regs_num + i * core_dfx_regs_num + j; + debug->last_words[idx] = readl_relaxed( + io_base + hzip_dump_dfx_regs[j].offset); + } + } + + return 0; +} + +static void hisi_zip_show_last_regs_uninit(struct hisi_qm *qm) +{ + struct qm_debug *debug = &qm->debug; + + if (qm->fun_type == QM_HW_VF || !debug->last_words) + return; + + kfree(debug->last_words); + debug->last_words = NULL; +} + +static void hisi_zip_show_last_dfx_regs(struct hisi_qm *qm) +{ + int core_dfx_regs_num = ARRAY_SIZE(hzip_dump_dfx_regs); + int com_dfx_regs_num = ARRAY_SIZE(hzip_com_dfx_regs); + u32 zip_core_num, zip_comp_core_num; + struct qm_debug *debug = &qm->debug; + char buf[HZIP_BUF_SIZE]; + u32 zip_core_info; + void __iomem *base; + int i, j, idx; + u32 val; + + if (qm->fun_type == QM_HW_VF || !debug->last_words) + return; + + for (i = 0; i < com_dfx_regs_num; i++) { + val = readl_relaxed(qm->io_base + hzip_com_dfx_regs[i].offset); + if (debug->last_words[i] != val) + pci_info(qm->pdev, "com_dfx: %s \t= 0x%08x => 0x%08x\n", + hzip_com_dfx_regs[i].name, debug->last_words[i], val); + } + + zip_core_info = qm->cap_tables.dev_cap_table[ZIP_CORE_INFO].cap_val; + zip_core_num = (zip_core_info >> zip_basic_cap_info[ZIP_CORE_NUM_CAP].shift) & + zip_basic_cap_info[ZIP_CORE_NUM_CAP].mask; + zip_comp_core_num = (zip_core_info >> zip_basic_cap_info[ZIP_CLUSTER_COMP_NUM_CAP].shift) & + zip_basic_cap_info[ZIP_CLUSTER_COMP_NUM_CAP].mask; + + for (i = 0; i < zip_core_num; i++) { + if (i < zip_comp_core_num) + scnprintf(buf, sizeof(buf), "Comp_core-%d", i); + else + scnprintf(buf, sizeof(buf), "Decomp_core-%d", + i - zip_comp_core_num); + base = get_zip_core_addr(qm, i); + + pci_info(qm->pdev, "==>%s:\n", buf); + /* dump last word for dfx regs during control resetting */ + for (j = 0; j < core_dfx_regs_num; j++) { + idx = com_dfx_regs_num + i * core_dfx_regs_num + j; + val = readl_relaxed(base + hzip_dump_dfx_regs[j].offset); + if (debug->last_words[idx] != val) + pci_info(qm->pdev, "%s \t= 0x%08x => 0x%08x\n", + hzip_dump_dfx_regs[j].name, + debug->last_words[idx], val); + } + } +} + +static void hisi_zip_log_hw_error(struct hisi_qm *qm, u32 err_sts) +{ + const struct hisi_zip_hw_error *err = zip_hw_error; + struct device *dev = &qm->pdev->dev; + u32 err_val; + + while (err->msg) { + if (err->int_msk & err_sts) { + dev_err(dev, "%s [error status=0x%x] found\n", + err->msg, err->int_msk); + + if (err->int_msk & HZIP_CORE_INT_STATUS_M_ECC) { + err_val = readl(qm->io_base + + HZIP_CORE_SRAM_ECC_ERR_INFO); + dev_err(dev, "hisi-zip multi ecc sram num=0x%x\n", + ((err_val >> + HZIP_SRAM_ECC_ERR_NUM_SHIFT) & 0xFF)); + } + } + err++; + } +} + +static u32 hisi_zip_get_hw_err_status(struct hisi_qm *qm) +{ + return readl(qm->io_base + HZIP_CORE_INT_STATUS); +} + +static void hisi_zip_clear_hw_err_status(struct hisi_qm *qm, u32 err_sts) +{ + writel(err_sts, qm->io_base + HZIP_CORE_INT_SOURCE); +} + +static void hisi_zip_disable_error_report(struct hisi_qm *qm, u32 err_type) +{ + u32 nfe_mask = qm->err_info.dev_err.nfe; + + writel(nfe_mask & (~err_type), qm->io_base + HZIP_CORE_INT_RAS_NFE_ENB); +} + +static void hisi_zip_enable_error_report(struct hisi_qm *qm) +{ + u32 nfe_mask = qm->err_info.dev_err.nfe; + u32 ce_mask = qm->err_info.dev_err.ce; + + writel(nfe_mask, qm->io_base + HZIP_CORE_INT_RAS_NFE_ENB); + writel(ce_mask, qm->io_base + HZIP_CORE_INT_RAS_CE_ENB); +} + +static void hisi_zip_open_axi_master_ooo(struct hisi_qm *qm) +{ + u32 val; + + val = readl(qm->io_base + HZIP_SOFT_CTRL_ZIP_CONTROL); + + writel(val & ~HZIP_AXI_SHUTDOWN_ENABLE, + qm->io_base + HZIP_SOFT_CTRL_ZIP_CONTROL); + + writel(val | HZIP_AXI_SHUTDOWN_ENABLE, + qm->io_base + HZIP_SOFT_CTRL_ZIP_CONTROL); + + hisi_dae_open_axi_master_ooo(qm); +} + +static void hisi_zip_close_axi_master_ooo(struct hisi_qm *qm) +{ + u32 nfe_enb; + + /* Disable ECC Mbit error report. */ + nfe_enb = readl(qm->io_base + HZIP_CORE_INT_RAS_NFE_ENB); + writel(nfe_enb & ~HZIP_CORE_INT_STATUS_M_ECC, + qm->io_base + HZIP_CORE_INT_RAS_NFE_ENB); + + /* Inject zip ECC Mbit error to block master ooo. */ + writel(HZIP_CORE_INT_STATUS_M_ECC, + qm->io_base + HZIP_CORE_INT_SET); +} + +static enum acc_err_result hisi_zip_get_err_result(struct hisi_qm *qm) +{ + enum acc_err_result zip_result = ACC_ERR_NONE; + enum acc_err_result dae_result; + u32 err_status; + + /* Get device hardware new error status */ + err_status = hisi_zip_get_hw_err_status(qm); + if (err_status) { + if (err_status & qm->err_info.dev_err.ecc_2bits_mask) + qm->err_status.is_dev_ecc_mbit = true; + hisi_zip_log_hw_error(qm, err_status); + + if (err_status & qm->err_info.dev_err.reset_mask) { + /* Disable the same error reporting until device is recovered. */ + hisi_zip_disable_error_report(qm, err_status); + zip_result = ACC_ERR_NEED_RESET; + } else { + hisi_zip_clear_hw_err_status(qm, err_status); + /* Avoid firmware disable error report, re-enable. */ + hisi_zip_enable_error_report(qm); + } + } + + dae_result = hisi_dae_get_err_result(qm); + + return (zip_result == ACC_ERR_NEED_RESET || + dae_result == ACC_ERR_NEED_RESET) ? + ACC_ERR_NEED_RESET : ACC_ERR_RECOVERED; +} + +static bool hisi_zip_dev_is_abnormal(struct hisi_qm *qm) +{ + u32 err_status; + + err_status = hisi_zip_get_hw_err_status(qm); + if (err_status & qm->err_info.dev_err.shutdown_mask) + return true; + + return hisi_dae_dev_is_abnormal(qm); +} + +static int hisi_zip_set_priv_status(struct hisi_qm *qm) +{ + return hisi_dae_close_axi_master_ooo(qm); +} + +static void hisi_zip_disable_axi_error(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *dev_err = &qm->err_info.dev_err; + u32 err_mask = dev_err->ce | dev_err->nfe | dev_err->fe; + u32 val; + + val = ~(err_mask & (~HZIP_AXI_ERROR_MASK)); + writel(val, qm->io_base + HZIP_CORE_INT_MASK_REG); + + if (qm->ver > QM_HW_V2) + writel(dev_err->shutdown_mask & (~HZIP_AXI_ERROR_MASK), + qm->io_base + HZIP_OOO_SHUTDOWN_SEL); +} + +static void hisi_zip_enable_axi_error(struct hisi_qm *qm) +{ + struct hisi_qm_err_mask *dev_err = &qm->err_info.dev_err; + u32 err_mask = dev_err->ce | dev_err->nfe | dev_err->fe; + + /* clear axi error source */ + writel(HZIP_AXI_ERROR_MASK, qm->io_base + HZIP_CORE_INT_SOURCE); + + writel(~err_mask, qm->io_base + HZIP_CORE_INT_MASK_REG); + + if (qm->ver > QM_HW_V2) + writel(dev_err->shutdown_mask, qm->io_base + HZIP_OOO_SHUTDOWN_SEL); +} + +static void hisi_zip_err_info_init(struct hisi_qm *qm) +{ + struct hisi_qm_err_info *err_info = &qm->err_info; + struct hisi_qm_err_mask *qm_err = &err_info->qm_err; + struct hisi_qm_err_mask *dev_err = &err_info->dev_err; + + qm_err->fe = HZIP_CORE_INT_RAS_FE_ENB_MASK; + qm_err->ce = hisi_qm_get_hw_info(qm, zip_basic_cap_info, ZIP_QM_CE_MASK_CAP, qm->cap_ver); + qm_err->nfe = hisi_qm_get_hw_info(qm, zip_basic_cap_info, + ZIP_QM_NFE_MASK_CAP, qm->cap_ver); + qm_err->ecc_2bits_mask = QM_ECC_MBIT; + qm_err->reset_mask = hisi_qm_get_hw_info(qm, zip_basic_cap_info, + ZIP_QM_RESET_MASK_CAP, qm->cap_ver); + qm_err->shutdown_mask = hisi_qm_get_hw_info(qm, zip_basic_cap_info, + ZIP_QM_OOO_SHUTDOWN_MASK_CAP, qm->cap_ver); + + dev_err->fe = HZIP_CORE_INT_RAS_FE_ENB_MASK; + dev_err->ce = hisi_qm_get_hw_info(qm, zip_basic_cap_info, ZIP_CE_MASK_CAP, qm->cap_ver); + dev_err->nfe = hisi_qm_get_hw_info(qm, zip_basic_cap_info, ZIP_NFE_MASK_CAP, qm->cap_ver); + dev_err->ecc_2bits_mask = HZIP_CORE_INT_STATUS_M_ECC; + dev_err->shutdown_mask = hisi_qm_get_hw_info(qm, zip_basic_cap_info, + ZIP_OOO_SHUTDOWN_MASK_CAP, qm->cap_ver); + dev_err->reset_mask = hisi_qm_get_hw_info(qm, zip_basic_cap_info, + ZIP_RESET_MASK_CAP, qm->cap_ver); + + err_info->msi_wr_port = HZIP_WR_PORT; + err_info->acpi_rst = "ZRST"; +} + +static const struct hisi_qm_err_ini hisi_zip_err_ini = { + .hw_init = hisi_zip_set_user_domain_and_cache, + .hw_err_enable = hisi_zip_hw_error_enable, + .hw_err_disable = hisi_zip_hw_error_disable, + .get_dev_hw_err_status = hisi_zip_get_hw_err_status, + .clear_dev_hw_err_status = hisi_zip_clear_hw_err_status, + .open_axi_master_ooo = hisi_zip_open_axi_master_ooo, + .close_axi_master_ooo = hisi_zip_close_axi_master_ooo, + .open_sva_prefetch = hisi_zip_open_sva_prefetch, + .close_sva_prefetch = hisi_zip_close_sva_prefetch, + .show_last_dfx_regs = hisi_zip_show_last_dfx_regs, + .err_info_init = hisi_zip_err_info_init, + .get_err_result = hisi_zip_get_err_result, + .set_priv_status = hisi_zip_set_priv_status, + .dev_is_abnormal = hisi_zip_dev_is_abnormal, + .disable_axi_error = hisi_zip_disable_axi_error, + .enable_axi_error = hisi_zip_enable_axi_error, +}; + +static int hisi_zip_pf_probe_init(struct hisi_zip *hisi_zip) +{ + struct hisi_qm *qm = &hisi_zip->qm; + struct hisi_zip_ctrl *ctrl; + int ret; + + ctrl = devm_kzalloc(&qm->pdev->dev, sizeof(*ctrl), GFP_KERNEL); + if (!ctrl) + return -ENOMEM; + + hisi_zip->ctrl = ctrl; + ctrl->hisi_zip = hisi_zip; + + ret = hisi_zip_set_user_domain_and_cache(qm); + if (ret) + return ret; + + hisi_qm_dev_err_init(qm); + hisi_zip_debug_regs_clear(qm); + + ret = hisi_zip_show_last_regs_init(qm); + if (ret) + pci_err(qm->pdev, "Failed to init last word regs!\n"); + + return ret; +} + +static int zip_pre_store_cap_reg(struct hisi_qm *qm) +{ + struct hisi_qm_cap_record *zip_cap; + struct pci_dev *pdev = qm->pdev; + size_t i, size; + + size = ARRAY_SIZE(zip_cap_query_info); + zip_cap = devm_kcalloc(&pdev->dev, size, sizeof(*zip_cap), GFP_KERNEL); + if (!zip_cap) + return -ENOMEM; + + for (i = 0; i < size; i++) { + zip_cap[i].type = zip_cap_query_info[i].type; + zip_cap[i].name = zip_cap_query_info[i].name; + zip_cap[i].cap_val = hisi_qm_get_cap_value(qm, zip_cap_query_info, + i, qm->cap_ver); + } + + qm->cap_tables.dev_cap_table = zip_cap; + qm->cap_tables.dev_cap_size = size; + + return 0; +} + +static void zip_set_channels(struct hisi_qm *qm) +{ + struct qm_channel *channel_data = &qm->channel_data; + int i; + + channel_data->channel_num = HZIP_MAX_CHANNEL_NUM; + for (i = 0; i < HZIP_MAX_CHANNEL_NUM; i++) + channel_data->channel_name[i] = zip_channel_name[i]; +} + +static int hisi_zip_qm_init(struct hisi_qm *qm, struct pci_dev *pdev) +{ + u64 alg_msk; + int ret; + + qm->pdev = pdev; + qm->mode = uacce_mode; + qm->sqe_size = HZIP_SQE_SIZE; + qm->dev_name = hisi_zip_name; + + qm->fun_type = (pdev->device == PCI_DEVICE_ID_HUAWEI_ZIP_PF) ? + QM_HW_PF : QM_HW_VF; + if (qm->fun_type == QM_HW_PF) { + qm->qp_base = HZIP_PF_DEF_Q_BASE; + qm->qp_num = pf_q_num; + qm->debug.curr_qm_qp_num = pf_q_num; + qm->qm_list = &zip_devices; + qm->err_ini = &hisi_zip_err_ini; + if (pf_q_num_flag) + set_bit(QM_MODULE_PARAM, &qm->misc_ctl); + } else if (qm->fun_type == QM_HW_VF && qm->ver == QM_HW_V1) { + /* + * have no way to get qm configure in VM in v1 hardware, + * so currently force PF to uses HZIP_PF_DEF_Q_NUM, and force + * to trigger only one VF in v1 hardware. + * + * v2 hardware has no such problem. + */ + qm->qp_base = HZIP_PF_DEF_Q_NUM; + qm->qp_num = HZIP_QUEUE_NUM_V1 - HZIP_PF_DEF_Q_NUM; + } + + ret = hisi_qm_init(qm); + if (ret) { + pci_err(qm->pdev, "Failed to init zip qm configures!\n"); + return ret; + } + + zip_set_channels(qm); + /* Fetch and save the value of capability registers */ + ret = zip_pre_store_cap_reg(qm); + if (ret) { + pci_err(qm->pdev, "Failed to pre-store capability registers!\n"); + goto err_qm_uninit; + } + + alg_msk = qm->cap_tables.dev_cap_table[ZIP_ALG_BITMAP].cap_val; + ret = hisi_qm_set_algs(qm, alg_msk, zip_dev_algs, ARRAY_SIZE(zip_dev_algs)); + if (ret) { + pci_err(qm->pdev, "Failed to set zip algs!\n"); + goto err_qm_uninit; + } + + ret = hisi_dae_set_alg(qm); + if (ret) + goto err_qm_uninit; + + return 0; + +err_qm_uninit: + hisi_qm_uninit(qm); + return ret; +} + +static void hisi_zip_qm_uninit(struct hisi_qm *qm) +{ + hisi_qm_uninit(qm); +} + +static int hisi_zip_probe_init(struct hisi_zip *hisi_zip) +{ + u32 type_rate = HZIP_SHAPER_RATE_COMPRESS; + struct hisi_qm *qm = &hisi_zip->qm; + int ret; + + if (qm->fun_type == QM_HW_PF) { + ret = hisi_zip_pf_probe_init(hisi_zip); + if (ret) + return ret; + /* enable shaper type 0 */ + if (qm->ver >= QM_HW_V3) { + type_rate |= QM_SHAPER_ENABLE; + + /* ZIP need to enable shaper type 1 */ + type_rate |= HZIP_SHAPER_RATE_DECOMPRESS << QM_SHAPER_TYPE1_OFFSET; + qm->type_rate = type_rate; + } + } + + return 0; +} + +static void hisi_zip_probe_uninit(struct hisi_qm *qm) +{ + if (qm->fun_type == QM_HW_VF) + return; + + hisi_zip_show_last_regs_uninit(qm); + hisi_zip_close_sva_prefetch(qm); + hisi_qm_dev_err_uninit(qm); +} + +static int hisi_zip_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct hisi_zip *hisi_zip; + struct hisi_qm *qm; + int ret; + + hisi_zip = devm_kzalloc(&pdev->dev, sizeof(*hisi_zip), GFP_KERNEL); + if (!hisi_zip) + return -ENOMEM; + + qm = &hisi_zip->qm; + + ret = hisi_zip_qm_init(qm, pdev); + if (ret) { + pci_err(pdev, "Failed to init ZIP QM (%d)!\n", ret); + return ret; + } + + ret = hisi_zip_probe_init(hisi_zip); + if (ret) { + pci_err(pdev, "Failed to probe (%d)!\n", ret); + goto err_qm_uninit; + } + + ret = hisi_qm_start(qm); + if (ret) + goto err_probe_uninit; + + ret = hisi_zip_debugfs_init(qm); + if (ret) + pci_err(pdev, "failed to init debugfs (%d)!\n", ret); + + hisi_qm_add_list(qm, &zip_devices); + ret = hisi_qm_alg_register(qm, &zip_devices, HZIP_CTX_Q_NUM_DEF); + if (ret < 0) { + pci_err(pdev, "failed to register driver to crypto!\n"); + goto err_qm_del_list; + } + + ret = hisi_qm_register_uacce(qm); + if (ret) { + pci_err(pdev, "failed to register uacce (%d)!\n", ret); + goto err_qm_alg_unregister; + } + + if (qm->fun_type == QM_HW_PF && vfs_num > 0) { + ret = hisi_qm_sriov_enable(pdev, vfs_num); + if (ret < 0) + goto err_qm_alg_unregister; + } + + hisi_qm_pm_init(qm); + + return 0; + +err_qm_alg_unregister: + hisi_qm_alg_unregister(qm, &zip_devices, HZIP_CTX_Q_NUM_DEF); + +err_qm_del_list: + hisi_qm_del_list(qm, &zip_devices); + hisi_zip_debugfs_exit(qm); + hisi_qm_stop(qm, QM_NORMAL); + +err_probe_uninit: + hisi_zip_probe_uninit(qm); + +err_qm_uninit: + hisi_zip_qm_uninit(qm); + + return ret; +} + +static void hisi_zip_remove(struct pci_dev *pdev) +{ + struct hisi_qm *qm = pci_get_drvdata(pdev); + + hisi_qm_pm_uninit(qm); + hisi_qm_wait_task_finish(qm, &zip_devices); + hisi_qm_alg_unregister(qm, &zip_devices, HZIP_CTX_Q_NUM_DEF); + hisi_qm_del_list(qm, &zip_devices); + + if (qm->fun_type == QM_HW_PF && qm->vfs_num) + hisi_qm_sriov_disable(pdev, true); + + hisi_zip_debugfs_exit(qm); + hisi_qm_stop(qm, QM_NORMAL); + hisi_zip_probe_uninit(qm); + hisi_zip_qm_uninit(qm); +} + +static const struct dev_pm_ops hisi_zip_pm_ops = { + SET_RUNTIME_PM_OPS(hisi_qm_suspend, hisi_qm_resume, NULL) +}; + +static const struct pci_error_handlers hisi_zip_err_handler = { + .error_detected = hisi_qm_dev_err_detected, + .slot_reset = hisi_qm_dev_slot_reset, + .reset_prepare = hisi_qm_reset_prepare, + .reset_done = hisi_qm_reset_done, +}; + +static struct pci_driver hisi_zip_pci_driver = { + .name = "hisi_zip", + .id_table = hisi_zip_dev_ids, + .probe = hisi_zip_probe, + .remove = hisi_zip_remove, + .sriov_configure = IS_ENABLED(CONFIG_PCI_IOV) ? + hisi_qm_sriov_configure : NULL, + .err_handler = &hisi_zip_err_handler, + .shutdown = hisi_qm_dev_shutdown, + .driver.pm = &hisi_zip_pm_ops, +}; + +struct pci_driver *hisi_zip_get_pf_driver(void) +{ + return &hisi_zip_pci_driver; +} +EXPORT_SYMBOL_GPL(hisi_zip_get_pf_driver); + +static void hisi_zip_register_debugfs(void) +{ + if (!debugfs_initialized()) + return; + + hzip_debugfs_root = debugfs_create_dir("hisi_zip", NULL); +} + +static void hisi_zip_unregister_debugfs(void) +{ + debugfs_remove_recursive(hzip_debugfs_root); +} + +static int __init hisi_zip_init(void) +{ + int ret; + + hisi_qm_init_list(&zip_devices); + hisi_zip_register_debugfs(); + + ret = pci_register_driver(&hisi_zip_pci_driver); + if (ret < 0) { + hisi_zip_unregister_debugfs(); + pr_err("Failed to register pci driver.\n"); + } + + return ret; +} + +static void __exit hisi_zip_exit(void) +{ + pci_unregister_driver(&hisi_zip_pci_driver); + hisi_zip_unregister_debugfs(); +} + +module_init(hisi_zip_init); +module_exit(hisi_zip_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Zhou Wang <wangzhou1@hisilicon.com>"); +MODULE_DESCRIPTION("Driver for HiSilicon ZIP accelerator"); |
