From 228ddee8ed9e24084274954eb526b5798b006f1f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Mon, 16 Nov 2020 20:12:03 +0100 Subject: [PATCH] drm/amdgpu: fix check order in amdgpu_bo_move MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reorder the code to fix checking if blitting is available. Signed-off-by: Christian König Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/401019/ Signed-off-by: Linus Torvalds --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 53 +++++++++++-------------- 1 file changed, 23 insertions(+), 30 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index b848f9e97613..4d8f19ab1014 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -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; } /*