diff options
author | Dave Airlie <airlied@redhat.com> | 2020-10-29 13:59:08 +1000 |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2020-11-11 11:11:20 +1000 |
commit | f5a89a5cae812a39993be32e74c8ed7856b1e2b2 (patch) | |
tree | 4b635af3140c09e6f4d55a62ed3c5ac8cc360d47 | |
parent | ebdf565169af006ee3be8c40eecbfc77d28a3b84 (diff) | |
download | linux-f5a89a5cae812a39993be32e74c8ed7856b1e2b2.tar.bz2 |
drm/amdgpu/ttm: use multihop
This removes the code to move resources directly between
SYSTEM and VRAM in favour of using the core ttm mulithop code.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201109005432.861936-3-airlied@gmail.com
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 136 |
1 files changed, 12 insertions, 124 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index fad7ca959316..676fb520e044 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -513,119 +513,6 @@ error: } /** - * amdgpu_move_vram_ram - Copy VRAM buffer to RAM buffer - * - * Called by amdgpu_bo_move(). - */ -static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo, bool evict, - struct ttm_operation_ctx *ctx, - struct ttm_resource *new_mem) -{ - struct ttm_resource *old_mem = &bo->mem; - struct ttm_resource tmp_mem; - struct ttm_place placements; - struct ttm_placement placement; - int r; - - /* create space/pages for new_mem in GTT space */ - tmp_mem = *new_mem; - tmp_mem.mm_node = NULL; - placement.num_placement = 1; - placement.placement = &placements; - placement.num_busy_placement = 1; - placement.busy_placement = &placements; - placements.fpfn = 0; - placements.lpfn = 0; - placements.mem_type = TTM_PL_TT; - placements.flags = 0; - r = ttm_bo_mem_space(bo, &placement, &tmp_mem, ctx); - if (unlikely(r)) { - pr_err("Failed to find GTT space for blit from VRAM\n"); - return r; - } - - r = ttm_tt_populate(bo->bdev, bo->ttm, ctx); - if (unlikely(r)) - goto out_cleanup; - - /* Bind the memory to the GTT space */ - r = amdgpu_ttm_backend_bind(bo->bdev, bo->ttm, &tmp_mem); - if (unlikely(r)) { - goto out_cleanup; - } - - /* blit VRAM to GTT */ - r = amdgpu_move_blit(bo, evict, &tmp_mem, old_mem); - if (unlikely(r)) { - goto out_cleanup; - } - - r = ttm_bo_wait_ctx(bo, ctx); - if (unlikely(r)) - goto out_cleanup; - - amdgpu_ttm_backend_unbind(bo->bdev, bo->ttm); - ttm_resource_free(bo, &bo->mem); - ttm_bo_assign_mem(bo, new_mem); -out_cleanup: - ttm_resource_free(bo, &tmp_mem); - return r; -} - -/** - * amdgpu_move_ram_vram - Copy buffer from RAM to VRAM - * - * Called by amdgpu_bo_move(). - */ -static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo, bool evict, - struct ttm_operation_ctx *ctx, - struct ttm_resource *new_mem) -{ - struct ttm_resource *old_mem = &bo->mem; - struct ttm_resource tmp_mem; - struct ttm_placement placement; - struct ttm_place placements; - int r; - - /* make space in GTT for old_mem buffer */ - tmp_mem = *new_mem; - tmp_mem.mm_node = NULL; - placement.num_placement = 1; - placement.placement = &placements; - placement.num_busy_placement = 1; - placement.busy_placement = &placements; - placements.fpfn = 0; - placements.lpfn = 0; - placements.mem_type = TTM_PL_TT; - placements.flags = 0; - r = ttm_bo_mem_space(bo, &placement, &tmp_mem, ctx); - if (unlikely(r)) { - pr_err("Failed to find GTT space for blit to VRAM\n"); - return r; - } - - /* move/bind old memory to GTT space */ - r = ttm_tt_populate(bo->bdev, bo->ttm, ctx); - if (unlikely(r)) - return r; - - r = amdgpu_ttm_backend_bind(bo->bdev, bo->ttm, &tmp_mem); - if (unlikely(r)) { - goto out_cleanup; - } - - ttm_bo_assign_mem(bo, &tmp_mem); - /* copy to VRAM */ - r = amdgpu_move_blit(bo, evict, new_mem, old_mem); - if (unlikely(r)) { - goto out_cleanup; - } -out_cleanup: - ttm_resource_free(bo, &tmp_mem); - return r; -} - -/** * amdgpu_mem_visible - Check that memory can be accessed by ttm_bo_move_memcpy * * Called by amdgpu_bo_move() @@ -664,6 +551,17 @@ 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) @@ -717,17 +615,7 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, bool evict, goto memcpy; } - if (old_mem->mem_type == TTM_PL_VRAM && - new_mem->mem_type == TTM_PL_SYSTEM) { - r = amdgpu_move_vram_ram(bo, evict, ctx, new_mem); - } else if (old_mem->mem_type == TTM_PL_SYSTEM && - new_mem->mem_type == TTM_PL_VRAM) { - r = amdgpu_move_ram_vram(bo, evict, ctx, new_mem); - } else { - r = amdgpu_move_blit(bo, evict, - new_mem, old_mem); - } - + r = amdgpu_move_blit(bo, evict, new_mem, old_mem); if (r) { memcpy: /* Check that all memory is CPU accessible */ |