diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 382 |
1 files changed, 304 insertions, 78 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c index 0dcff2889e25..0af469ec6fcc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c @@ -32,6 +32,8 @@ #include "amdgpu.h" #include "amdgpu_ras.h" +#include "amdgpu_reset.h" +#include "amdgpu_dpm.h" #include "vi.h" #include "soc15.h" #include "nv.h" @@ -71,59 +73,6 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev) amdgpu_num_kcq = 2; } -void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev, - uint32_t reg0, uint32_t reg1, - uint32_t ref, uint32_t mask, - uint32_t xcc_inst) -{ - struct amdgpu_kiq *kiq = &adev->gfx.kiq[xcc_inst]; - struct amdgpu_ring *ring = &kiq->ring; - signed long r, cnt = 0; - unsigned long flags; - uint32_t seq; - - if (adev->mes.ring.sched.ready) { - amdgpu_mes_reg_write_reg_wait(adev, reg0, reg1, - ref, mask); - return; - } - - spin_lock_irqsave(&kiq->ring_lock, flags); - amdgpu_ring_alloc(ring, 32); - amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1, - ref, mask); - r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT); - if (r) - goto failed_undo; - - amdgpu_ring_commit(ring); - spin_unlock_irqrestore(&kiq->ring_lock, flags); - - r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT); - - /* don't wait anymore for IRQ context */ - if (r < 1 && in_interrupt()) - goto failed_kiq; - - might_sleep(); - while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) { - - msleep(MAX_KIQ_REG_BAILOUT_INTERVAL); - r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT); - } - - if (cnt > MAX_KIQ_REG_TRY) - goto failed_kiq; - - return; - -failed_undo: - amdgpu_ring_undo(ring); - spin_unlock_irqrestore(&kiq->ring_lock, flags); -failed_kiq: - dev_err(adev->dev, "failed to write reg %x wait reg %x\n", reg0, reg1); -} - /** * amdgpu_virt_request_full_gpu() - request full gpu access * @adev: amdgpu device. @@ -138,8 +87,10 @@ int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init) if (virt->ops && virt->ops->req_full_gpu) { r = virt->ops->req_full_gpu(adev, init); - if (r) + if (r) { + adev->no_hw_access = true; return r; + } adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME; } @@ -205,6 +156,20 @@ void amdgpu_virt_request_init_data(struct amdgpu_device *adev) } /** + * amdgpu_virt_ready_to_reset() - send ready to reset to host + * @adev: amdgpu device. + * Send ready to reset message to GPU hypervisor to signal we have stopped GPU + * activity and is ready for host FLR + */ +void amdgpu_virt_ready_to_reset(struct amdgpu_device *adev) +{ + struct amdgpu_virt *virt = &adev->virt; + + if (virt->ops && virt->ops->reset_gpu) + virt->ops->ready_to_reset(adev); +} + +/** * amdgpu_virt_wait_reset() - wait for reset gpu completed * @adev: amdgpu device. * Wait for GPU reset completed. @@ -267,6 +232,22 @@ void amdgpu_virt_free_mm_table(struct amdgpu_device *adev) adev->virt.mm_table.gpu_addr = 0; } +/** + * amdgpu_virt_rcvd_ras_interrupt() - receive ras interrupt + * @adev: amdgpu device. + * Check whether host sent RAS error message + * Return: true if found, otherwise false + */ +bool amdgpu_virt_rcvd_ras_interrupt(struct amdgpu_device *adev) +{ + struct amdgpu_virt *virt = &adev->virt; + + if (!virt->ops || !virt->ops->rcvd_ras_intr) + return false; + + return virt->ops->rcvd_ras_intr(adev); +} + unsigned int amd_sriov_msg_checksum(void *obj, unsigned long obj_size, @@ -303,11 +284,11 @@ static int amdgpu_virt_init_ras_err_handler_data(struct amdgpu_device *adev) if (!*data) goto data_failure; - bps = kmalloc_array(align_space, sizeof((*data)->bps), GFP_KERNEL); + bps = kmalloc_array(align_space, sizeof(*(*data)->bps), GFP_KERNEL); if (!bps) goto bps_failure; - bps_bo = kmalloc_array(align_space, sizeof((*data)->bps_bo), GFP_KERNEL); + bps_bo = kmalloc_array(align_space, sizeof(*(*data)->bps_bo), GFP_KERNEL); if (!bps_bo) goto bps_bo_failure; @@ -340,8 +321,10 @@ static void amdgpu_virt_ras_release_bp(struct amdgpu_device *adev) for (i = data->last_reserved - 1; i >= 0; i--) { bo = data->bps_bo[i]; - amdgpu_bo_free_kernel(&bo, NULL, NULL); - data->bps_bo[i] = bo; + if (bo) { + amdgpu_bo_free_kernel(&bo, NULL, NULL); + data->bps_bo[i] = bo; + } data->last_reserved = i; } } @@ -381,6 +364,8 @@ static void amdgpu_virt_ras_reserve_bps(struct amdgpu_device *adev) { struct amdgpu_virt *virt = &adev->virt; struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data; + struct amdgpu_vram_mgr *mgr = &adev->mman.vram_mgr; + struct ttm_resource_manager *man = &mgr->manager; struct amdgpu_bo *bo = NULL; uint64_t bp; int i; @@ -396,12 +381,18 @@ static void amdgpu_virt_ras_reserve_bps(struct amdgpu_device *adev) * 2) a ras bad page has been reserved (duplicate error injection * for one page); */ - if (amdgpu_bo_create_kernel_at(adev, bp << AMDGPU_GPU_PAGE_SHIFT, - AMDGPU_GPU_PAGE_SIZE, - &bo, NULL)) - DRM_DEBUG("RAS WARN: reserve vram for retired page %llx fail\n", bp); - - data->bps_bo[i] = bo; + if (ttm_resource_manager_used(man)) { + amdgpu_vram_mgr_reserve_range(&adev->mman.vram_mgr, + bp << AMDGPU_GPU_PAGE_SHIFT, + AMDGPU_GPU_PAGE_SIZE); + data->bps_bo[i] = NULL; + } else { + if (amdgpu_bo_create_kernel_at(adev, bp << AMDGPU_GPU_PAGE_SHIFT, + AMDGPU_GPU_PAGE_SIZE, + &bo, NULL)) + DRM_DEBUG("RAS WARN: reserve vram for retired page %llx fail\n", bp); + data->bps_bo[i] = bo; + } data->last_reserved = i + 1; bo = NULL; } @@ -437,6 +428,8 @@ static void amdgpu_virt_add_bad_page(struct amdgpu_device *adev, else vram_usage_va = adev->mman.drv_vram_usage_va; + memset(&bp, 0, sizeof(bp)); + if (bp_block_size) { bp_cnt = bp_block_size / sizeof(uint64_t); for (bp_idx = 0; bp_idx < bp_cnt; bp_idx++) { @@ -467,7 +460,7 @@ static int amdgpu_virt_read_pf2vf_data(struct amdgpu_device *adev) return -EINVAL; if (pf2vf_info->size > 1024) { - DRM_ERROR("invalid pf2vf message size\n"); + dev_err(adev->dev, "invalid pf2vf message size: 0x%x\n", pf2vf_info->size); return -EINVAL; } @@ -478,7 +471,9 @@ static int amdgpu_virt_read_pf2vf_data(struct amdgpu_device *adev) adev->virt.fw_reserve.p_pf2vf, pf2vf_info->size, adev->virt.fw_reserve.checksum_key, checksum); if (checksum != checkval) { - DRM_ERROR("invalid pf2vf message\n"); + dev_err(adev->dev, + "invalid pf2vf message: header checksum=0x%x calculated checksum=0x%x\n", + checksum, checkval); return -EINVAL; } @@ -492,7 +487,9 @@ static int amdgpu_virt_read_pf2vf_data(struct amdgpu_device *adev) adev->virt.fw_reserve.p_pf2vf, pf2vf_info->size, 0, checksum); if (checksum != checkval) { - DRM_ERROR("invalid pf2vf message\n"); + dev_err(adev->dev, + "invalid pf2vf message: header checksum=0x%x calculated checksum=0x%x\n", + checksum, checkval); return -EINVAL; } @@ -526,9 +523,12 @@ static int amdgpu_virt_read_pf2vf_data(struct amdgpu_device *adev) adev->unique_id = ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->uuid; + adev->virt.ras_en_caps.all = ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->ras_en_caps.all; + adev->virt.ras_telemetry_en_caps.all = + ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->ras_telemetry_en_caps.all; break; default: - DRM_ERROR("invalid pf2vf version\n"); + dev_err(adev->dev, "invalid pf2vf version: 0x%x\n", pf2vf_info->version); return -EINVAL; } @@ -614,9 +614,14 @@ static int amdgpu_virt_write_vf2pf_data(struct amdgpu_device *adev) vf2pf_info->decode_usage = 0; vf2pf_info->dummy_page_addr = (uint64_t)adev->dummy_page_addr; + vf2pf_info->mes_info_addr = (uint64_t)adev->mes.resource_1_gpu_addr; + + if (adev->mes.resource_1) { + vf2pf_info->mes_info_size = adev->mes.resource_1->tbo.base.size; + } vf2pf_info->checksum = amd_sriov_msg_checksum( - vf2pf_info, vf2pf_info->header.size, 0, 0); + vf2pf_info, sizeof(*vf2pf_info), 0, 0); return 0; } @@ -627,8 +632,25 @@ static void amdgpu_virt_update_vf2pf_work_item(struct work_struct *work) int ret; ret = amdgpu_virt_read_pf2vf_data(adev); - if (ret) + if (ret) { + adev->virt.vf2pf_update_retry_cnt++; + + if ((amdgpu_virt_rcvd_ras_interrupt(adev) || + adev->virt.vf2pf_update_retry_cnt >= AMDGPU_VF2PF_UPDATE_MAX_RETRY_LIMIT) && + amdgpu_sriov_runtime(adev)) { + + amdgpu_ras_set_fed(adev, true); + if (amdgpu_reset_domain_schedule(adev->reset_domain, + &adev->kfd.reset_work)) + return; + else + dev_err(adev->dev, "Failed to queue work! at %s", __func__); + } + goto out; + } + + adev->virt.vf2pf_update_retry_cnt = 0; amdgpu_virt_write_vf2pf_data(adev); out: @@ -649,6 +671,7 @@ void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev) adev->virt.fw_reserve.p_pf2vf = NULL; adev->virt.fw_reserve.p_vf2pf = NULL; adev->virt.vf2pf_update_interval_ms = 0; + adev->virt.vf2pf_update_retry_cnt = 0; if (adev->mman.fw_vram_usage_va && adev->mman.drv_vram_usage_va) { DRM_WARN("Currently fw_vram and drv_vram should not have values at the same time!"); @@ -683,6 +706,8 @@ void amdgpu_virt_exchange_data(struct amdgpu_device *adev) adev->virt.fw_reserve.p_vf2pf = (struct amd_sriov_msg_vf2pf_info_header *) (adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_VF2PF_OFFSET_KB << 10)); + adev->virt.fw_reserve.ras_telemetry = + (adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_RAS_TELEMETRY_OFFSET_KB << 10)); } else if (adev->mman.drv_vram_usage_va) { adev->virt.fw_reserve.p_pf2vf = (struct amd_sriov_msg_pf2vf_info_header *) @@ -690,6 +715,8 @@ void amdgpu_virt_exchange_data(struct amdgpu_device *adev) adev->virt.fw_reserve.p_vf2pf = (struct amd_sriov_msg_vf2pf_info_header *) (adev->mman.drv_vram_usage_va + (AMD_SRIOV_MSG_VF2PF_OFFSET_KB << 10)); + adev->virt.fw_reserve.ras_telemetry = + (adev->mman.drv_vram_usage_va + (AMD_SRIOV_MSG_RAS_TELEMETRY_OFFSET_KB << 10)); } amdgpu_virt_read_pf2vf_data(adev); @@ -748,12 +775,6 @@ void amdgpu_detect_virtualization(struct amdgpu_device *adev) adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE; } - if (amdgpu_sriov_vf(adev) && adev->asic_type == CHIP_SIENNA_CICHLID) - /* VF MMIO access (except mailbox range) from CPU - * will be blocked during sriov runtime - */ - adev->virt.caps |= AMDGPU_VF_MMIO_ACCESS_PROTECT; - /* we have the ability to check now */ if (amdgpu_sriov_vf(adev)) { switch (adev->asic_type) { @@ -836,6 +857,13 @@ enum amdgpu_sriov_vf_mode amdgpu_virt_get_sriov_vf_mode(struct amdgpu_device *ad return mode; } +void amdgpu_virt_pre_reset(struct amdgpu_device *adev) +{ + /* stop the data exchange thread */ + amdgpu_virt_fini_data_exchange(adev); + amdgpu_dpm_set_mp1_state(adev, PP_MP1_STATE_FLR); +} + void amdgpu_virt_post_reset(struct amdgpu_device *adev) { if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(11, 0, 3)) { @@ -844,6 +872,8 @@ void amdgpu_virt_post_reset(struct amdgpu_device *adev) */ adev->gfx.is_poweron = false; } + + adev->mes.ring[0].sched.ready = false; } bool amdgpu_virt_fw_load_skip_check(struct amdgpu_device *adev, uint32_t ucode_id) @@ -999,11 +1029,17 @@ u32 amdgpu_virt_rlcg_reg_rw(struct amdgpu_device *adev, u32 offset, u32 v, u32 f return 0; } + if (amdgpu_device_skip_hw_access(adev)) + return 0; + reg_access_ctrl = &adev->gfx.rlc.reg_access_ctrl[xcc_id]; scratch_reg0 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg0; scratch_reg1 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg1; scratch_reg2 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg2; scratch_reg3 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg3; + + mutex_lock(&adev->virt.rlcg_reg_lock); + if (reg_access_ctrl->spare_int) spare_int = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->spare_int; @@ -1022,7 +1058,7 @@ u32 amdgpu_virt_rlcg_reg_rw(struct amdgpu_device *adev, u32 offset, u32 v, u32 f * SCRATCH_REG0 = read/write value * SCRATCH_REG1[30:28] = command * SCRATCH_REG1[19:0] = address in dword - * SCRATCH_REG1[26:24] = Error reporting + * SCRATCH_REG1[27:24] = Error reporting */ writel(v, scratch_reg0); writel((offset | flag), scratch_reg1); @@ -1036,7 +1072,8 @@ u32 amdgpu_virt_rlcg_reg_rw(struct amdgpu_device *adev, u32 offset, u32 v, u32 f udelay(10); } - if (i >= timeout) { + tmp = readl(scratch_reg1); + if (i >= timeout || (tmp & AMDGPU_RLCG_SCRATCH1_ERROR_MASK) != 0) { if (amdgpu_sriov_rlcg_error_report_enabled(adev)) { if (tmp & AMDGPU_RLCG_VFGATE_DISABLED) { dev_err(adev->dev, @@ -1059,6 +1096,9 @@ u32 amdgpu_virt_rlcg_reg_rw(struct amdgpu_device *adev, u32 offset, u32 v, u32 f } ret = readl(scratch_reg0); + + mutex_unlock(&adev->virt.rlcg_reg_lock); + return ret; } @@ -1068,6 +1108,9 @@ void amdgpu_sriov_wreg(struct amdgpu_device *adev, { u32 rlcg_flag; + if (amdgpu_device_skip_hw_access(adev)) + return; + if (!amdgpu_sriov_runtime(adev) && amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, true, &rlcg_flag)) { amdgpu_virt_rlcg_reg_rw(adev, offset, value, rlcg_flag, xcc_id); @@ -1085,6 +1128,9 @@ u32 amdgpu_sriov_rreg(struct amdgpu_device *adev, { u32 rlcg_flag; + if (amdgpu_device_skip_hw_access(adev)) + return 0; + if (!amdgpu_sriov_runtime(adev) && amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, false, &rlcg_flag)) return amdgpu_virt_rlcg_reg_rw(adev, offset, 0, rlcg_flag, xcc_id); @@ -1105,3 +1151,183 @@ bool amdgpu_sriov_xnack_support(struct amdgpu_device *adev) return xnack_mode; } + +bool amdgpu_virt_get_ras_capability(struct amdgpu_device *adev) +{ + struct amdgpu_ras *con = amdgpu_ras_get_context(adev); + + if (!amdgpu_sriov_ras_caps_en(adev)) + return false; + + if (adev->virt.ras_en_caps.bits.block_umc) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__UMC); + if (adev->virt.ras_en_caps.bits.block_sdma) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__SDMA); + if (adev->virt.ras_en_caps.bits.block_gfx) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__GFX); + if (adev->virt.ras_en_caps.bits.block_mmhub) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__MMHUB); + if (adev->virt.ras_en_caps.bits.block_athub) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__ATHUB); + if (adev->virt.ras_en_caps.bits.block_pcie_bif) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__PCIE_BIF); + if (adev->virt.ras_en_caps.bits.block_hdp) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__HDP); + if (adev->virt.ras_en_caps.bits.block_xgmi_wafl) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__XGMI_WAFL); + if (adev->virt.ras_en_caps.bits.block_df) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__DF); + if (adev->virt.ras_en_caps.bits.block_smn) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__SMN); + if (adev->virt.ras_en_caps.bits.block_sem) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__SEM); + if (adev->virt.ras_en_caps.bits.block_mp0) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__MP0); + if (adev->virt.ras_en_caps.bits.block_mp1) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__MP1); + if (adev->virt.ras_en_caps.bits.block_fuse) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__FUSE); + if (adev->virt.ras_en_caps.bits.block_mca) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__MCA); + if (adev->virt.ras_en_caps.bits.block_vcn) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__VCN); + if (adev->virt.ras_en_caps.bits.block_jpeg) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__JPEG); + if (adev->virt.ras_en_caps.bits.block_ih) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__IH); + if (adev->virt.ras_en_caps.bits.block_mpio) + adev->ras_hw_enabled |= BIT(AMDGPU_RAS_BLOCK__MPIO); + + if (adev->virt.ras_en_caps.bits.poison_propogation_mode) + con->poison_supported = true; /* Poison is handled by host */ + + return true; +} + +static inline enum amd_sriov_ras_telemetry_gpu_block +amdgpu_ras_block_to_sriov(struct amdgpu_device *adev, enum amdgpu_ras_block block) { + switch (block) { + case AMDGPU_RAS_BLOCK__UMC: + return RAS_TELEMETRY_GPU_BLOCK_UMC; + case AMDGPU_RAS_BLOCK__SDMA: + return RAS_TELEMETRY_GPU_BLOCK_SDMA; + case AMDGPU_RAS_BLOCK__GFX: + return RAS_TELEMETRY_GPU_BLOCK_GFX; + case AMDGPU_RAS_BLOCK__MMHUB: + return RAS_TELEMETRY_GPU_BLOCK_MMHUB; + case AMDGPU_RAS_BLOCK__ATHUB: + return RAS_TELEMETRY_GPU_BLOCK_ATHUB; + case AMDGPU_RAS_BLOCK__PCIE_BIF: + return RAS_TELEMETRY_GPU_BLOCK_PCIE_BIF; + case AMDGPU_RAS_BLOCK__HDP: + return RAS_TELEMETRY_GPU_BLOCK_HDP; + case AMDGPU_RAS_BLOCK__XGMI_WAFL: + return RAS_TELEMETRY_GPU_BLOCK_XGMI_WAFL; + case AMDGPU_RAS_BLOCK__DF: + return RAS_TELEMETRY_GPU_BLOCK_DF; + case AMDGPU_RAS_BLOCK__SMN: + return RAS_TELEMETRY_GPU_BLOCK_SMN; + case AMDGPU_RAS_BLOCK__SEM: + return RAS_TELEMETRY_GPU_BLOCK_SEM; + case AMDGPU_RAS_BLOCK__MP0: + return RAS_TELEMETRY_GPU_BLOCK_MP0; + case AMDGPU_RAS_BLOCK__MP1: + return RAS_TELEMETRY_GPU_BLOCK_MP1; + case AMDGPU_RAS_BLOCK__FUSE: + return RAS_TELEMETRY_GPU_BLOCK_FUSE; + case AMDGPU_RAS_BLOCK__MCA: + return RAS_TELEMETRY_GPU_BLOCK_MCA; + case AMDGPU_RAS_BLOCK__VCN: + return RAS_TELEMETRY_GPU_BLOCK_VCN; + case AMDGPU_RAS_BLOCK__JPEG: + return RAS_TELEMETRY_GPU_BLOCK_JPEG; + case AMDGPU_RAS_BLOCK__IH: + return RAS_TELEMETRY_GPU_BLOCK_IH; + case AMDGPU_RAS_BLOCK__MPIO: + return RAS_TELEMETRY_GPU_BLOCK_MPIO; + default: + dev_err(adev->dev, "Unsupported SRIOV RAS telemetry block 0x%x\n", block); + return RAS_TELEMETRY_GPU_BLOCK_COUNT; + } +} + +static int amdgpu_virt_cache_host_error_counts(struct amdgpu_device *adev, + struct amdsriov_ras_telemetry *host_telemetry) +{ + struct amd_sriov_ras_telemetry_error_count *tmp = NULL; + uint32_t checksum, used_size; + + checksum = host_telemetry->header.checksum; + used_size = host_telemetry->header.used_size; + + if (used_size > (AMD_SRIOV_RAS_TELEMETRY_SIZE_KB << 10)) + return 0; + + tmp = kmemdup(&host_telemetry->body.error_count, used_size, GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + if (checksum != amd_sriov_msg_checksum(tmp, used_size, 0, 0)) + goto out; + + memcpy(&adev->virt.count_cache, tmp, + min(used_size, sizeof(adev->virt.count_cache))); +out: + kfree(tmp); + + return 0; +} + +static int amdgpu_virt_req_ras_err_count_internal(struct amdgpu_device *adev, bool force_update) +{ + struct amdgpu_virt *virt = &adev->virt; + + /* Host allows 15 ras telemetry requests per 60 seconds. Afterwhich, the Host + * will ignore incoming guest messages. Ratelimit the guest messages to + * prevent guest self DOS. + */ + if (__ratelimit(&adev->virt.ras_telemetry_rs) || force_update) { + if (!virt->ops->req_ras_err_count(adev)) + amdgpu_virt_cache_host_error_counts(adev, + adev->virt.fw_reserve.ras_telemetry); + } + + return 0; +} + +/* Bypass ACA interface and query ECC counts directly from host */ +int amdgpu_virt_req_ras_err_count(struct amdgpu_device *adev, enum amdgpu_ras_block block, + struct ras_err_data *err_data) +{ + enum amd_sriov_ras_telemetry_gpu_block sriov_block; + + sriov_block = amdgpu_ras_block_to_sriov(adev, block); + + if (sriov_block >= RAS_TELEMETRY_GPU_BLOCK_COUNT || + !amdgpu_sriov_ras_telemetry_block_en(adev, sriov_block)) + return -EOPNOTSUPP; + + /* Host Access may be lost during reset, just return last cached data. */ + if (down_read_trylock(&adev->reset_domain->sem)) { + amdgpu_virt_req_ras_err_count_internal(adev, false); + up_read(&adev->reset_domain->sem); + } + + err_data->ue_count = adev->virt.count_cache.block[sriov_block].ue_count; + err_data->ce_count = adev->virt.count_cache.block[sriov_block].ce_count; + err_data->de_count = adev->virt.count_cache.block[sriov_block].de_count; + + return 0; +} + +int amdgpu_virt_ras_telemetry_post_reset(struct amdgpu_device *adev) +{ + unsigned long ue_count, ce_count; + + if (amdgpu_sriov_ras_telemetry_en(adev)) { + amdgpu_virt_req_ras_err_count_internal(adev, true); + amdgpu_ras_query_error_count(adev, &ce_count, &ue_count, NULL); + } + + return 0; +} |