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drm/amdgpu: recover vram bo from shadow after gpu reset V2 

V2:
1. don't directly submit to many jobs at the same time.
2. delete unrelated printk.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chunming Zhou 2016-07-21 17:20:52 +08:00 committed by Alex Deucher
parent 0c4e7fa561
commit 53cdccd520
1 changed files with 62 additions and 0 deletions
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62
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -2060,6 +2060,35 @@ bool amdgpu_need_backup(struct amdgpu_device *adev)
return amdgpu_lockup_timeout > 0 ? true : false;
}
static int amdgpu_recover_vram_from_shadow(struct amdgpu_device *adev,
struct amdgpu_ring *ring,
struct amdgpu_bo *bo,
struct fence **fence)
{
uint32_t domain;
int r;
if (!bo->shadow)
return 0;
r = amdgpu_bo_reserve(bo, false);
if (r)
return r;
domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
/* if bo has been evicted, then no need to recover */
if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
r = amdgpu_bo_restore_from_shadow(adev, ring, bo,
NULL, fence, true);
if (r) {
DRM_ERROR("recover page table failed!\n");
goto err;
}
}
err:
amdgpu_bo_unreserve(bo);
return r;
}
/**
* amdgpu_gpu_reset - reset the asic
*
@ -2138,13 +2167,46 @@ retry:
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)) {
struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
struct amdgpu_bo *bo, *tmp;
struct fence *fence = NULL, *next = NULL;
DRM_INFO("recover vram bo from shadow\n");
mutex_lock(&adev->shadow_list_lock);
list_for_each_entry_safe(bo, tmp, &adev->shadow_list, shadow_list) {
amdgpu_recover_vram_from_shadow(adev, ring, bo, &next);
if (fence) {
r = fence_wait(fence, false);
if (r) {
WARN(r, "recovery from shadow isn't comleted\n");
break;
}
}
fence_put(fence);
fence = next;
}
mutex_unlock(&adev->shadow_list_lock);
if (fence) {
r = fence_wait(fence, false);
if (r)
WARN(r, "recovery from shadow isn't comleted\n");
}
fence_put(fence);
}
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];
if (!ring)
continue;
amd_sched_job_recovery(&ring->sched);
kthread_unpark(ring->sched.thread);
}