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drm/amdgpu: fix check order in amdgpu_bo_move 

Reorder the code to fix checking if blitting is available.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/401019/
This commit is contained in:
Christian König 2020-11-16 20:12:03 +01:00
parent fa388231fe
commit aefec40938
1 changed files with 23 additions and 30 deletions
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53
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
View File

@ -551,25 +551,12 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, bool evict,
struct ttm_resource *old_mem = &bo->mem;
int r;
if ((old_mem->mem_type == TTM_PL_SYSTEM &&
new_mem->mem_type == TTM_PL_VRAM) ||
(old_mem->mem_type == TTM_PL_VRAM &&
new_mem->mem_type == TTM_PL_SYSTEM)) {
hop->fpfn = 0;
hop->lpfn = 0;
hop->mem_type = TTM_PL_TT;
hop->flags = 0;
return -EMULTIHOP;
}
if (new_mem->mem_type == TTM_PL_TT) {
r = amdgpu_ttm_backend_bind(bo->bdev, bo->ttm, new_mem);
if (r)
return r;
}
amdgpu_bo_move_notify(bo, evict, new_mem);
/* Can't move a pinned BO */
abo = ttm_to_amdgpu_bo(bo);
if (WARN_ON_ONCE(abo->tbo.pin_count > 0))
@ -579,24 +566,23 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, bool evict,
if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
ttm_bo_move_null(bo, new_mem);
return 0;
goto out;
}
if (old_mem->mem_type == TTM_PL_SYSTEM &&
new_mem->mem_type == TTM_PL_TT) {
ttm_bo_move_null(bo, new_mem);
return 0;
goto out;
}
if (old_mem->mem_type == TTM_PL_TT &&
new_mem->mem_type == TTM_PL_SYSTEM) {
r = ttm_bo_wait_ctx(bo, ctx);
if (r)
goto fail;
return r;
amdgpu_ttm_backend_unbind(bo->bdev, bo->ttm);
ttm_resource_free(bo, &bo->mem);
ttm_bo_assign_mem(bo, new_mem);
return 0;
goto out;
}
if (old_mem->mem_type == AMDGPU_PL_GDS ||
@ -607,27 +593,37 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, bool evict,
new_mem->mem_type == AMDGPU_PL_OA) {
/* Nothing to save here */
ttm_bo_move_null(bo, new_mem);
return 0;
goto out;
}
if (!adev->mman.buffer_funcs_enabled) {
if (adev->mman.buffer_funcs_enabled) {
if (((old_mem->mem_type == TTM_PL_SYSTEM &&
new_mem->mem_type == TTM_PL_VRAM) ||
(old_mem->mem_type == TTM_PL_VRAM &&
new_mem->mem_type == TTM_PL_SYSTEM))) {
hop->fpfn = 0;
hop->lpfn = 0;
hop->mem_type = TTM_PL_TT;
hop->flags = 0;
return -EMULTIHOP;
}
r = amdgpu_move_blit(bo, evict, new_mem, old_mem);
} else {
r = -ENODEV;
goto memcpy;
}
r = amdgpu_move_blit(bo, evict, new_mem, old_mem);
if (r) {
memcpy:
/* Check that all memory is CPU accessible */
if (!amdgpu_mem_visible(adev, old_mem) ||
!amdgpu_mem_visible(adev, new_mem)) {
pr_err("Move buffer fallback to memcpy unavailable\n");
goto fail;
return r;
}
r = ttm_bo_move_memcpy(bo, ctx, new_mem);
if (r)
goto fail;
return r;
}
if (bo->type == ttm_bo_type_device &&
@ -639,14 +635,11 @@ memcpy:
abo->flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
}
out:
/* update statistics */
atomic64_add((u64)bo->num_pages << PAGE_SHIFT, &adev->num_bytes_moved);
amdgpu_bo_move_notify(bo, evict, new_mem);
return 0;
fail:
swap(*new_mem, bo->mem);
amdgpu_bo_move_notify(bo, false, new_mem);
swap(*new_mem, bo->mem);
return r;
}
/**