From 5740682e66cef57626a328d237698cad329c0449 Mon Sep 17 00:00:00 2001 From: Monk Liu Date: Wed, 25 Oct 2017 16:37:02 +0800 Subject: [PATCH] drm/amdgpu:implement new GPU recover(v3) MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 1,new imple names amdgpu_gpu_recover which gives more hint on what it does compared with gpu_reset 2,gpu_recover unify bare-metal and SR-IOV, only the asic reset part is implemented differently 3,gpu_recover will increase hang job karma and mark its entity/context as guilty if exceeds limit V2: 4,in scheduler main routine the job from guilty context will be immedialy fake signaled after it poped from queue and its fence be set with "-ECANCELED" error 5,in scheduler recovery routine all jobs from the guilty entity would be dropped 6,in run_job() routine the real IB submission would be skipped if @skip parameter equales true or there was VRAM lost occured. V3: 7,replace deprecated gpu reset, use new gpu recover Signed-off-by: Monk Liu Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 6 +- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 322 ++++++++++++++--------------- drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 10 +- drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 5 +- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 1 - drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 2 +- drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c | 2 +- 8 files changed, 166 insertions(+), 184 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 88fa19b..5714b7e8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -178,6 +178,10 @@ extern int amdgpu_cik_support; #define CIK_CURSOR_WIDTH 128 #define CIK_CURSOR_HEIGHT 128 +/* GPU RESET flags */ +#define AMDGPU_RESET_INFO_VRAM_LOST (1 << 0) +#define AMDGPU_RESET_INFO_FULLRESET (1 << 1) + struct amdgpu_device; struct amdgpu_ib; struct amdgpu_cs_parser; @@ -1833,7 +1837,7 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring) #define amdgpu_psp_check_fw_loading_status(adev, i) (adev)->firmware.funcs->check_fw_loading_status((adev), (i)) /* Common functions */ -int amdgpu_gpu_reset(struct amdgpu_device *adev); +int amdgpu_gpu_recover(struct amdgpu_device *adev, struct amdgpu_job* job); bool amdgpu_need_backup(struct amdgpu_device *adev); void amdgpu_pci_config_reset(struct amdgpu_device *adev); bool amdgpu_need_post(struct amdgpu_device *adev); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index e521850..e287eed 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2827,163 +2827,172 @@ err: return r; } -/** - * amdgpu_sriov_gpu_reset - reset the asic +/* + * amdgpu_reset - reset ASIC/GPU for bare-metal or passthrough * * @adev: amdgpu device pointer - * @job: which job trigger hang + * @reset_flags: output param tells caller the reset result * - * Attempt the reset the GPU if it has hung (all asics). - * for SRIOV case. - * Returns 0 for success or an error on failure. - */ -int amdgpu_sriov_gpu_reset(struct amdgpu_device *adev, struct amdgpu_job *job) + * attempt to do soft-reset or full-reset and reinitialize Asic + * return 0 means successed otherwise failed +*/ +static int amdgpu_reset(struct amdgpu_device *adev, uint64_t* reset_flags) { - int i, j, r = 0; - int resched; - struct amdgpu_bo *bo, *tmp; - struct amdgpu_ring *ring; - struct dma_fence *fence = NULL, *next = NULL; + bool need_full_reset, vram_lost = 0; + int r; - mutex_lock(&adev->virt.lock_reset); - atomic_inc(&adev->gpu_reset_counter); - adev->in_sriov_reset = true; + need_full_reset = amdgpu_need_full_reset(adev); - /* block TTM */ - resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev); + if (!need_full_reset) { + amdgpu_pre_soft_reset(adev); + r = amdgpu_soft_reset(adev); + amdgpu_post_soft_reset(adev); + if (r || amdgpu_check_soft_reset(adev)) { + DRM_INFO("soft reset failed, will fallback to full reset!\n"); + need_full_reset = true; + } - /* we start from the ring trigger GPU hang */ - j = job ? job->ring->idx : 0; + } - /* block scheduler */ - for (i = j; i < j + AMDGPU_MAX_RINGS; ++i) { - ring = adev->rings[i % AMDGPU_MAX_RINGS]; - if (!ring || !ring->sched.thread) - continue; + if (need_full_reset) { + r = amdgpu_suspend(adev); - kthread_park(ring->sched.thread); +retry: + amdgpu_atombios_scratch_regs_save(adev); + r = amdgpu_asic_reset(adev); + amdgpu_atombios_scratch_regs_restore(adev); + /* post card */ + amdgpu_atom_asic_init(adev->mode_info.atom_context); - if (job && j != i) - continue; + if (!r) { + dev_info(adev->dev, "GPU reset succeeded, trying to resume\n"); + r = amdgpu_resume_phase1(adev); + if (r) + goto out; - /* here give the last chance to check if job removed from mirror-list - * since we already pay some time on kthread_park */ - if (job && list_empty(&job->base.node)) { - kthread_unpark(ring->sched.thread); - goto give_up_reset; + vram_lost = amdgpu_check_vram_lost(adev); + if (vram_lost) { + DRM_ERROR("VRAM is lost!\n"); + atomic_inc(&adev->vram_lost_counter); + } + + r = amdgpu_ttm_recover_gart(adev); + if (r) + goto out; + + r = amdgpu_resume_phase2(adev); + if (r) + goto out; + + if (vram_lost) + amdgpu_fill_reset_magic(adev); } + } - if (amd_sched_invalidate_job(&job->base, amdgpu_job_hang_limit)) - amd_sched_job_kickout(&job->base); +out: + if (!r) { + amdgpu_irq_gpu_reset_resume_helper(adev); + r = amdgpu_ib_ring_tests(adev); + if (r) { + dev_err(adev->dev, "ib ring test failed (%d).\n", r); + r = amdgpu_suspend(adev); + need_full_reset = true; + goto retry; + } + } - /* only do job_reset on the hang ring if @job not NULL */ - amd_sched_hw_job_reset(&ring->sched, NULL); + if (reset_flags) { + if (vram_lost) + (*reset_flags) |= AMDGPU_RESET_INFO_VRAM_LOST; - /* after all hw jobs are reset, hw fence is meaningless, so force_completion */ - amdgpu_fence_driver_force_completion(ring); + if (need_full_reset) + (*reset_flags) |= AMDGPU_RESET_INFO_FULLRESET; } - /* request to take full control of GPU before re-initialization */ - if (job) - amdgpu_virt_reset_gpu(adev); - else - amdgpu_virt_request_full_gpu(adev, true); + return r; +} + +/* + * amdgpu_reset_sriov - reset ASIC for SR-IOV vf + * + * @adev: amdgpu device pointer + * @reset_flags: output param tells caller the reset result + * + * do VF FLR and reinitialize Asic + * return 0 means successed otherwise failed +*/ +static int amdgpu_reset_sriov(struct amdgpu_device *adev, uint64_t *reset_flags, bool from_hypervisor) +{ + int r; + if (from_hypervisor) + r = amdgpu_virt_request_full_gpu(adev, true); + else + r = amdgpu_virt_reset_gpu(adev); + if (r) + return r; /* Resume IP prior to SMC */ - amdgpu_sriov_reinit_early(adev); + r = amdgpu_sriov_reinit_early(adev); + if (r) + goto error; /* we need recover gart prior to run SMC/CP/SDMA resume */ amdgpu_ttm_recover_gart(adev); /* now we are okay to resume SMC/CP/SDMA */ - amdgpu_sriov_reinit_late(adev); + r = amdgpu_sriov_reinit_late(adev); + if (r) + goto error; amdgpu_irq_gpu_reset_resume_helper(adev); - - if (amdgpu_ib_ring_tests(adev)) + r = amdgpu_ib_ring_tests(adev); + if (r) dev_err(adev->dev, "[GPU_RESET] ib ring test failed (%d).\n", r); +error: /* release full control of GPU after ib test */ amdgpu_virt_release_full_gpu(adev, true); - DRM_INFO("recover vram bo from shadow\n"); - - ring = adev->mman.buffer_funcs_ring; - mutex_lock(&adev->shadow_list_lock); - list_for_each_entry_safe(bo, tmp, &adev->shadow_list, shadow_list) { - next = NULL; - amdgpu_recover_vram_from_shadow(adev, ring, bo, &next); - if (fence) { - r = dma_fence_wait(fence, false); - if (r) { - WARN(r, "recovery from shadow isn't completed\n"); - break; - } - } - - dma_fence_put(fence); - fence = next; - } - mutex_unlock(&adev->shadow_list_lock); - - if (fence) { - r = dma_fence_wait(fence, false); - if (r) - WARN(r, "recovery from shadow isn't completed\n"); - } - dma_fence_put(fence); - - for (i = j; i < j + AMDGPU_MAX_RINGS; ++i) { - ring = adev->rings[i % AMDGPU_MAX_RINGS]; - if (!ring || !ring->sched.thread) - continue; - - if (job && j != i) { - kthread_unpark(ring->sched.thread); - continue; - } - - amd_sched_job_recovery(&ring->sched); - kthread_unpark(ring->sched.thread); - } + if (reset_flags) { + /* will get vram_lost from GIM in future, now all + * reset request considered VRAM LOST + */ + (*reset_flags) |= ~AMDGPU_RESET_INFO_VRAM_LOST; + atomic_inc(&adev->vram_lost_counter); - drm_helper_resume_force_mode(adev->ddev); -give_up_reset: - ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched); - if (r) { - /* bad news, how to tell it to userspace ? */ - dev_info(adev->dev, "GPU reset failed\n"); - } else { - dev_info(adev->dev, "GPU reset successed!\n"); + /* VF FLR or hotlink reset is always full-reset */ + (*reset_flags) |= AMDGPU_RESET_INFO_FULLRESET; } - adev->in_sriov_reset = false; - mutex_unlock(&adev->virt.lock_reset); return r; } /** - * amdgpu_gpu_reset - reset the asic + * amdgpu_gpu_recover - reset the asic and recover scheduler * * @adev: amdgpu device pointer + * @job: which job trigger hang * - * Attempt the reset the GPU if it has hung (all asics). + * Attempt to reset the GPU if it has hung (all asics). * Returns 0 for success or an error on failure. */ -int amdgpu_gpu_reset(struct amdgpu_device *adev) +int amdgpu_gpu_recover(struct amdgpu_device *adev, struct amdgpu_job *job) { struct drm_atomic_state *state = NULL; - int i, r; - int resched; - bool need_full_reset, vram_lost = false; + uint64_t reset_flags = 0; + int i, r, resched; if (!amdgpu_check_soft_reset(adev)) { DRM_INFO("No hardware hang detected. Did some blocks stall?\n"); return 0; } + dev_info(adev->dev, "GPU reset begin!\n"); + + mutex_lock(&adev->virt.lock_reset); atomic_inc(&adev->gpu_reset_counter); + adev->in_sriov_reset = 1; /* block TTM */ resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev); @@ -2997,69 +3006,26 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev) if (!ring || !ring->sched.thread) continue; + + /* only focus on the ring hit timeout if &job not NULL */ + if (job && job->ring->idx != i) + continue; + kthread_park(ring->sched.thread); - amd_sched_hw_job_reset(&ring->sched, NULL); + amd_sched_hw_job_reset(&ring->sched, &job->base); + /* after all hw jobs are reset, hw fence is meaningless, so force_completion */ amdgpu_fence_driver_force_completion(ring); } - need_full_reset = amdgpu_need_full_reset(adev); - - if (!need_full_reset) { - amdgpu_pre_soft_reset(adev); - r = amdgpu_soft_reset(adev); - amdgpu_post_soft_reset(adev); - if (r || amdgpu_check_soft_reset(adev)) { - DRM_INFO("soft reset failed, will fallback to full reset!\n"); - need_full_reset = true; - } - } - - if (need_full_reset) { - r = amdgpu_suspend(adev); - -retry: - amdgpu_atombios_scratch_regs_save(adev); - r = amdgpu_asic_reset(adev); - amdgpu_atombios_scratch_regs_restore(adev); - /* post card */ - amdgpu_atom_asic_init(adev->mode_info.atom_context); + if (amdgpu_sriov_vf(adev)) + r = amdgpu_reset_sriov(adev, &reset_flags, job ? false : true); + else + r = amdgpu_reset(adev, &reset_flags); - if (!r) { - dev_info(adev->dev, "GPU reset succeeded, trying to resume\n"); - r = amdgpu_resume_phase1(adev); - if (r) - goto out; - vram_lost = amdgpu_check_vram_lost(adev); - if (vram_lost) { - DRM_ERROR("VRAM is lost!\n"); - atomic_inc(&adev->vram_lost_counter); - } - r = amdgpu_ttm_recover_gart(adev); - if (r) - goto out; - r = amdgpu_resume_phase2(adev); - if (r) - goto out; - if (vram_lost) - amdgpu_fill_reset_magic(adev); - } - } -out: if (!r) { - amdgpu_irq_gpu_reset_resume_helper(adev); - r = amdgpu_ib_ring_tests(adev); - if (r) { - dev_err(adev->dev, "ib ring test failed (%d).\n", r); - r = amdgpu_suspend(adev); - need_full_reset = true; - goto retry; - } - /** - * recovery vm page tables, since we cannot depend on VRAM is - * consistent after gpu full reset. - */ - if (need_full_reset && amdgpu_need_backup(adev)) { + if (((reset_flags & AMDGPU_RESET_INFO_FULLRESET) && !(adev->flags & AMD_IS_APU)) || + (reset_flags & AMDGPU_RESET_INFO_VRAM_LOST)) { struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring; struct amdgpu_bo *bo, *tmp; struct dma_fence *fence = NULL, *next = NULL; @@ -3088,40 +3054,56 @@ out: } dma_fence_put(fence); } + for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { struct amdgpu_ring *ring = adev->rings[i]; if (!ring || !ring->sched.thread) continue; + /* only focus on the ring hit timeout if &job not NULL */ + if (job && job->ring->idx != i) + continue; + amd_sched_job_recovery(&ring->sched); kthread_unpark(ring->sched.thread); } } else { - dev_err(adev->dev, "asic resume failed (%d).\n", r); for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { - if (adev->rings[i] && adev->rings[i]->sched.thread) { - kthread_unpark(adev->rings[i]->sched.thread); - } + struct amdgpu_ring *ring = adev->rings[i]; + + if (!ring || !ring->sched.thread) + continue; + + /* only focus on the ring hit timeout if &job not NULL */ + if (job && job->ring->idx != i) + continue; + + kthread_unpark(adev->rings[i]->sched.thread); } } if (amdgpu_device_has_dc_support(adev)) { - r = drm_atomic_helper_resume(adev->ddev, state); + if (drm_atomic_helper_resume(adev->ddev, state)) + dev_info(adev->dev, "drm resume failed:%d\n", r); amdgpu_dm_display_resume(adev); - } else + } else { drm_helper_resume_force_mode(adev->ddev); + } ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched); + if (r) { /* bad news, how to tell it to userspace ? */ - dev_info(adev->dev, "GPU reset failed\n"); - } - else { - dev_info(adev->dev, "GPU reset successed!\n"); + dev_info(adev->dev, "GPU reset(%d) failed\n", atomic_read(&adev->gpu_reset_counter)); + amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r); + } else { + dev_info(adev->dev, "GPU reset(%d) successed!\n",atomic_read(&adev->gpu_reset_counter)); } amdgpu_vf_error_trans_all(adev); + adev->in_sriov_reset = 0; + mutex_unlock(&adev->virt.lock_reset); return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c index eda89df..604ac03 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c @@ -694,25 +694,25 @@ static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data) } /** - * amdgpu_debugfs_gpu_reset - manually trigger a gpu reset + * amdgpu_debugfs_gpu_recover - manually trigger a gpu reset & recover * * Manually trigger a gpu reset at the next fence wait. */ -static int amdgpu_debugfs_gpu_reset(struct seq_file *m, void *data) +static int amdgpu_debugfs_gpu_recover(struct seq_file *m, void *data) { struct drm_info_node *node = (struct drm_info_node *) m->private; struct drm_device *dev = node->minor->dev; struct amdgpu_device *adev = dev->dev_private; - seq_printf(m, "gpu reset\n"); - amdgpu_gpu_reset(adev); + seq_printf(m, "gpu recover\n"); + amdgpu_gpu_recover(adev, NULL); return 0; } static const struct drm_info_list amdgpu_debugfs_fence_list[] = { {"amdgpu_fence_info", &amdgpu_debugfs_fence_info, 0, NULL}, - {"amdgpu_gpu_reset", &amdgpu_debugfs_gpu_reset, 0, NULL} + {"amdgpu_gpu_recover", &amdgpu_debugfs_gpu_recover, 0, NULL} }; static const struct drm_info_list amdgpu_debugfs_fence_list_sriov[] = { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c index 32590e4..c340774 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c @@ -88,7 +88,7 @@ static void amdgpu_irq_reset_work_func(struct work_struct *work) reset_work); if (!amdgpu_sriov_vf(adev)) - amdgpu_gpu_reset(adev); + amdgpu_gpu_recover(adev, NULL); } /* Disable *all* interrupts */ diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c index 0a90c76..18770a8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c @@ -37,10 +37,7 @@ static void amdgpu_job_timedout(struct amd_sched_job *s_job) atomic_read(&job->ring->fence_drv.last_seq), job->ring->fence_drv.sync_seq); - if (amdgpu_sriov_vf(job->adev)) - amdgpu_sriov_gpu_reset(job->adev, job); - else - amdgpu_gpu_reset(job->adev); + amdgpu_gpu_recover(job->adev, job); } int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h index d149aca..20bdb8f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h @@ -288,7 +288,6 @@ int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init); int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init); int amdgpu_virt_reset_gpu(struct amdgpu_device *adev); int amdgpu_virt_wait_reset(struct amdgpu_device *adev); -int amdgpu_sriov_gpu_reset(struct amdgpu_device *adev, struct amdgpu_job *job); int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev); void amdgpu_virt_free_mm_table(struct amdgpu_device *adev); int amdgpu_virt_fw_reserve_get_checksum(void *obj, unsigned long obj_size, diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c index f91aab3..c32d0b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c @@ -254,7 +254,7 @@ static void xgpu_ai_mailbox_flr_work(struct work_struct *work) } /* Trigger recovery due to world switch failure */ - amdgpu_sriov_gpu_reset(adev, NULL); + amdgpu_gpu_recover(adev, NULL); } static int xgpu_ai_set_mailbox_rcv_irq(struct amdgpu_device *adev, diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c index 27b03c7..818ec0f 100644 --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c @@ -519,7 +519,7 @@ static void xgpu_vi_mailbox_flr_work(struct work_struct *work) } /* Trigger recovery due to world switch failure */ - amdgpu_sriov_gpu_reset(adev, NULL); + amdgpu_gpu_recover(adev, NULL); } static int xgpu_vi_set_mailbox_rcv_irq(struct amdgpu_device *adev, -- 2.7.4