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| author | Dapeng Mi <dapeng1.mi@linux.intel.com> | 2026-09-17 09:52:33 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2026-09-22 11:37:46 +0200 |
| commit | 0102c8c7fdfc4bd700971daff2b94470f4eafae4 (patch) | |
| tree | 531306c2299f9a269f0a986e29f17ba972180104 /drivers/char/tpm/tpm.h | |
| download | linux-stable-0102c8c7fdfc4bd700971daff2b94470f4eafae4.tar.gz linux-stable-0102c8c7fdfc4bd700971daff2b94470f4eafae4.zip | |
perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rspgrafted
DMR introduces Offmodule Response events in place of the legacy
Offcore Response events, but it still exposes the inherited
offcore_rsp PMU attribute for programming the corresponding MSR data.
Rename the DMR PMU attribute to offmodule_rsp so the sysfs interface
matches the underlying event name and avoids user & tooling confusion.
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20260917015234.981153-12-dapeng1.mi@linux.intel.com
Diffstat (limited to 'drivers/char/tpm/tpm.h')
| -rw-r--r-- | drivers/char/tpm/tpm.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h new file mode 100644 index 000000000..fa554c5ad --- /dev/null +++ b/drivers/char/tpm/tpm.h @@ -0,0 +1,154 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2004 IBM Corporation + * Copyright (C) 2015 Intel Corporation + * + * Authors: + * Leendert van Doorn <leendert@watson.ibm.com> + * Dave Safford <safford@watson.ibm.com> + * Reiner Sailer <sailer@watson.ibm.com> + * Kylene Hall <kjhall@us.ibm.com> + * + * Maintained by: <tpmdd-devel@lists.sourceforge.net> + * + * Device driver for TCG/TCPA TPM (trusted platform module). + * Specifications at www.trustedcomputinggroup.org + */ + +#ifndef __TPM_H__ +#define __TPM_H__ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/hex.h> +#include <linux/mutex.h> +#include <linux/sched.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/tpm.h> +#include <linux/tpm_eventlog.h> + +#ifdef CONFIG_X86 +#include <asm/cpu_device_id.h> +#endif + +#define TPM_MINOR 224 /* officially assigned */ +#define TPM_NUM_DEVICES 65536 +#define TPM_RETRY 50 + +enum tpm_timeout { + TPM_TIMEOUT = 5, /* msecs */ + TPM_TIMEOUT_RETRY = 100, /* msecs */ + TPM_TIMEOUT_RANGE_US = 300, /* usecs */ + TPM_TIMEOUT_POLL = 1, /* msecs */ + TPM_TIMEOUT_USECS_MIN = 100, /* usecs */ + TPM_TIMEOUT_USECS_MAX = 500 /* usecs */ +}; + +/* TPM addresses */ +enum tpm_addr { + TPM_SUPERIO_ADDR = 0x2E, + TPM_ADDR = 0x4E, +}; + +extern const struct class tpm_class; +extern const struct class tpmrm_class; +extern dev_t tpm_devt; +extern const struct file_operations tpm_fops; +extern const struct file_operations tpmrm_fops; +extern struct idr dev_nums_idr; + +ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz); +int tpm_get_timeouts(struct tpm_chip *); +int tpm_auto_startup(struct tpm_chip *chip); + +int tpm1_pm_suspend(struct tpm_chip *chip, u32 tpm_suspend_pcr); +int tpm1_auto_startup(struct tpm_chip *chip); +int tpm1_do_selftest(struct tpm_chip *chip); +int tpm1_get_timeouts(struct tpm_chip *chip); +unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); +int tpm1_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, const u8 *hash, + const char *log_msg); +int tpm1_pcr_read(struct tpm_chip *chip, u32 pcr_idx, u8 *res_buf); +ssize_t tpm1_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap, + const char *desc, size_t min_cap_length); +int tpm1_get_random(struct tpm_chip *chip, u8 *out, size_t max); +int tpm1_get_pcr_allocation(struct tpm_chip *chip); +unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); +int tpm_pm_suspend(struct device *dev); +int tpm_pm_resume(struct device *dev); +int tpm_class_shutdown(struct device *dev); + +static inline void tpm_msleep(unsigned int delay_msec) +{ + usleep_range((delay_msec * 1000) - TPM_TIMEOUT_RANGE_US, + delay_msec * 1000); +}; + +int tpm_chip_bootstrap(struct tpm_chip *chip); +int tpm_chip_start(struct tpm_chip *chip); +void tpm_chip_stop(struct tpm_chip *chip); + +struct tpm_chip *tpm_chip_alloc(struct device *dev, + const struct tpm_class_ops *ops); +struct tpm_chip *tpmm_chip_alloc(struct device *pdev, + const struct tpm_class_ops *ops); +int tpm_chip_register(struct tpm_chip *chip); +void tpm_chip_unregister(struct tpm_chip *chip); + +void tpm_sysfs_add_device(struct tpm_chip *chip); + + +#ifdef CONFIG_ACPI +extern void tpm_add_ppi(struct tpm_chip *chip); +#else +static inline void tpm_add_ppi(struct tpm_chip *chip) +{ +} +#endif + +int tpm2_get_timeouts(struct tpm_chip *chip); +int tpm2_pcr_read(struct tpm_chip *chip, u32 pcr_idx, + struct tpm_digest *digest, u16 *digest_size_ptr); +int tpm2_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, + struct tpm_digest *digests); +int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max); +ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id, + u32 *value, const char *desc); + +ssize_t tpm2_get_pcr_allocation(struct tpm_chip *chip); +int tpm2_auto_startup(struct tpm_chip *chip); +void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type); +unsigned long tpm2_calc_ordinal_duration(u32 ordinal); +int tpm2_probe(struct tpm_chip *chip); +int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip); +int tpm2_find_cc(struct tpm_chip *chip, u32 cc); +int tpm2_init_space(struct tpm_space *space, unsigned int buf_size); +void tpm2_del_space(struct tpm_chip *chip, struct tpm_space *space); +void tpm2_flush_space(struct tpm_chip *chip); +int tpm2_prepare_space(struct tpm_chip *chip, struct tpm_space *space, u8 *cmd, + size_t cmdsiz); +int tpm2_commit_space(struct tpm_chip *chip, struct tpm_space *space, void *buf, + size_t *bufsiz); +int tpm_devs_add(struct tpm_chip *chip); +void tpm_devs_remove(struct tpm_chip *chip); +int tpm2_save_context(struct tpm_chip *chip, u32 handle, u8 *buf, + unsigned int buf_size, unsigned int *offset); +int tpm2_load_context(struct tpm_chip *chip, u8 *buf, + unsigned int *offset, u32 *handle); + +void tpm_bios_log_setup(struct tpm_chip *chip); +void tpm_bios_log_teardown(struct tpm_chip *chip); +int tpm_dev_common_init(void); +void tpm_dev_common_exit(void); + +#ifdef CONFIG_TCG_TPM2_HMAC +int tpm2_sessions_init(struct tpm_chip *chip); +#else +static inline int tpm2_sessions_init(struct tpm_chip *chip) +{ + return 0; +} +#endif + +#endif |
