From: Dave Airlie <airlied@xxxxxxxxxx>
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@xxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 136 +++---------------------
1 file changed, 13 insertions(+), 123 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index ce0d82802333..e1458d575aa9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -512,119 +512,6 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo,
return r;
}
-/**
- * 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
*
@@ -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)
@@ -717,16 +615,8 @@ 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);
