diff options
Diffstat (limited to 'drivers/accel/amdxdna/aie.c')
| -rw-r--r-- | drivers/accel/amdxdna/aie.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/drivers/accel/amdxdna/aie.c b/drivers/accel/amdxdna/aie.c new file mode 100644 index 000000000..dd6f36f22 --- /dev/null +++ b/drivers/accel/amdxdna/aie.c @@ -0,0 +1,167 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2026, Advanced Micro Devices, Inc. + */ + +#include <linux/errno.h> + +#include "aie.h" +#include "amdxdna_mailbox_helper.h" +#include "amdxdna_mailbox.h" +#include "amdxdna_pci_drv.h" + +void aie_dump_mgmt_chann_debug(struct aie_device *aie) +{ + struct amdxdna_dev *xdna = aie->xdna; + + XDNA_DBG(xdna, "i2x tail 0x%x", aie->mgmt_i2x.mb_tail_ptr_reg); + XDNA_DBG(xdna, "i2x head 0x%x", aie->mgmt_i2x.mb_head_ptr_reg); + XDNA_DBG(xdna, "i2x ringbuf 0x%x", aie->mgmt_i2x.rb_start_addr); + XDNA_DBG(xdna, "i2x rsize 0x%x", aie->mgmt_i2x.rb_size); + XDNA_DBG(xdna, "x2i tail 0x%x", aie->mgmt_x2i.mb_tail_ptr_reg); + XDNA_DBG(xdna, "x2i head 0x%x", aie->mgmt_x2i.mb_head_ptr_reg); + XDNA_DBG(xdna, "x2i ringbuf 0x%x", aie->mgmt_x2i.rb_start_addr); + XDNA_DBG(xdna, "x2i rsize 0x%x", aie->mgmt_x2i.rb_size); + XDNA_DBG(xdna, "x2i chann index 0x%x", aie->mgmt_chan_idx); + XDNA_DBG(xdna, "mailbox protocol major 0x%x", aie->mgmt_prot_major); + XDNA_DBG(xdna, "mailbox protocol minor 0x%x", aie->mgmt_prot_minor); +} + +void aie_destroy_chann(struct aie_device *aie, struct mailbox_channel **chann) +{ + struct amdxdna_dev *xdna = aie->xdna; + + drm_WARN_ON(&xdna->ddev, !mutex_is_locked(&xdna->dev_lock)); + + if (!*chann) + return; + + xdna_mailbox_stop_channel(*chann); + xdna_mailbox_free_channel(*chann); + *chann = NULL; +} + +int aie_send_mgmt_msg_wait(struct aie_device *aie, struct xdna_mailbox_msg *msg) +{ + struct amdxdna_dev *xdna = aie->xdna; + struct xdna_notify *hdl = msg->handle; + int ret; + + drm_WARN_ON(&xdna->ddev, !mutex_is_locked(&xdna->dev_lock)); + + if (!aie->mgmt_chann) + return -ENODEV; + + ret = xdna_send_msg_wait(xdna, aie->mgmt_chann, msg); + if (ret == -ETIME) + aie_destroy_chann(aie, &aie->mgmt_chann); + + if (!ret && *hdl->status) { + XDNA_ERR(xdna, "command opcode 0x%x failed, status 0x%x", + msg->opcode, *hdl->data); + ret = -EINVAL; + } + + return ret; +} + +int aie_check_protocol(struct aie_device *aie, u32 fw_major, u32 fw_minor) +{ + const struct amdxdna_fw_feature_tbl *feature; + bool found = false; + + for (feature = aie->xdna->dev_info->fw_feature_tbl; + feature->major; feature++) { + if (feature->major != fw_major) + continue; + if (fw_minor < feature->min_minor) + continue; + if (feature->max_minor > 0 && fw_minor > feature->max_minor) + continue; + + aie->feature_mask |= feature->features; + + /* firmware version matches one of the driver support entry */ + found = true; + } + + return found ? 0 : -EOPNOTSUPP; +} + +static void amdxdna_update_vbnv(struct amdxdna_dev *xdna, + const struct amdxdna_rev_vbnv *tbl, + u32 rev) +{ + int i; + + for (i = 0; tbl[i].vbnv; i++) { + if (tbl[i].revision == rev) { + xdna->vbnv = tbl[i].vbnv; + break; + } + } +} + +void amdxdna_vbnv_init(struct amdxdna_dev *xdna) +{ + const struct amdxdna_dev_info *info = xdna->dev_info; + u32 rev; + + xdna->vbnv = info->default_vbnv; + + if (!info->ops->get_dev_revision || !info->rev_vbnv_tbl) + return; + + if (info->ops->get_dev_revision(xdna, &rev)) + return; + + amdxdna_update_vbnv(xdna, info->rev_vbnv_tbl, rev); +} + +int amdxdna_get_metadata(struct aie_device *aie, + struct amdxdna_client *client, + struct amdxdna_drm_get_info *args) +{ + int ret = 0; + u32 buf_sz; + + buf_sz = min(args->buffer_size, sizeof(aie->metadata)); + if (copy_to_user(u64_to_user_ptr(args->buffer), &aie->metadata, buf_sz)) + ret = -EFAULT; + + return ret; +} + +void *amdxdna_alloc_msg_buffer(struct amdxdna_dev *xdna, u32 *size, + dma_addr_t *dma_addr) +{ + void *vaddr; + int order; + + *size = max_t(u32, *size, SZ_8K); + order = get_order(*size); + if (order > MAX_PAGE_ORDER) + return ERR_PTR(-EINVAL); + *size = PAGE_SIZE << order; + + if (amdxdna_iova_on(xdna)) + return amdxdna_iommu_alloc(xdna, *size, dma_addr); + + vaddr = dma_alloc_noncoherent(xdna->ddev.dev, *size, dma_addr, + DMA_FROM_DEVICE, GFP_KERNEL); + if (!vaddr) + return ERR_PTR(-ENOMEM); + + return vaddr; +} + +void amdxdna_free_msg_buffer(struct amdxdna_dev *xdna, size_t size, + void *cpu_addr, dma_addr_t dma_addr) +{ + if (amdxdna_iova_on(xdna)) { + amdxdna_iommu_free(xdna, size, cpu_addr, dma_addr); + return; + } + + dma_free_noncoherent(xdna->ddev.dev, size, cpu_addr, dma_addr, DMA_FROM_DEVICE); +} |