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drm/amdgpu: validate shadow before restoring from it

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Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger.He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roger.He 2017-04-21 13:08:43 +08:00 committed by Alex Deucher
parent 4a9ed1009b
commit 8252131639
3 changed files with 34 additions and 0 deletions
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12
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -2429,6 +2429,18 @@ static int amdgpu_recover_vram_from_shadow(struct amdgpu_device *adev,
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_validate(bo->shadow);
if (r) {
DRM_ERROR("bo validate failed!\n");
goto err;
}
r = amdgpu_ttm_bind(&bo->shadow->tbo, &bo->shadow->tbo.mem);
if (r) {
DRM_ERROR("%p bind failed\n", bo->shadow);
goto err;
}
r = amdgpu_bo_restore_from_shadow(adev, ring, bo,
NULL, fence, true);
if (r) {

21
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
View File

@ -543,6 +543,27 @@ int amdgpu_bo_backup_to_shadow(struct amdgpu_device *adev,
return r;
}
int amdgpu_bo_validate(struct amdgpu_bo *bo)
{
uint32_t domain;
int r;
if (bo->pin_count)
return 0;
domain = bo->prefered_domains;
retry:
amdgpu_ttm_placement_from_domain(bo, domain);
r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
domain = bo->allowed_domains;
goto retry;
}
return r;
}
int amdgpu_bo_restore_from_shadow(struct amdgpu_device *adev,
struct amdgpu_ring *ring,
struct amdgpu_bo *bo,

1
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
View File

@ -175,6 +175,7 @@ int amdgpu_bo_backup_to_shadow(struct amdgpu_device *adev,
struct amdgpu_bo *bo,
struct reservation_object *resv,
struct dma_fence **fence, bool direct);
int amdgpu_bo_validate(struct amdgpu_bo *bo);
int amdgpu_bo_restore_from_shadow(struct amdgpu_device *adev,
struct amdgpu_ring *ring,
struct amdgpu_bo *bo,