static int radeon_bo_move(struct ttm_buffer_object *bo,
			bool evict, bool interruptible,
			bool no_wait_reserve, bool no_wait_gpu,
			struct ttm_mem_reg *new_mem)
{
	struct radeon_device *rdev;
	struct ttm_mem_reg *old_mem = &bo->mem;
	int r;

	rdev = radeon_get_rdev(bo->bdev);
	if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
		radeon_move_null(bo, new_mem);
		return 0;
	}
	if ((old_mem->mem_type == TTM_PL_TT &&
	     new_mem->mem_type == TTM_PL_SYSTEM) ||
	    (old_mem->mem_type == TTM_PL_SYSTEM &&
	     new_mem->mem_type == TTM_PL_TT)) {
		/* bind is enough */
		radeon_move_null(bo, new_mem);
		return 0;
	}
	if (!rdev->ring[radeon_copy_ring_index(rdev)].ready ||
	    rdev->asic->copy.copy == NULL) {
		/* use memcpy */
		goto memcpy;
	}

	if (old_mem->mem_type == TTM_PL_VRAM &&
	    new_mem->mem_type == TTM_PL_SYSTEM) {
		r = radeon_move_vram_ram(bo, evict, interruptible,
					no_wait_reserve, no_wait_gpu, new_mem);
	} else if (old_mem->mem_type == TTM_PL_SYSTEM &&
		   new_mem->mem_type == TTM_PL_VRAM) {
		r = radeon_move_ram_vram(bo, evict, interruptible,
					    no_wait_reserve, no_wait_gpu, new_mem);
	} else {
		r = radeon_move_blit(bo, evict, no_wait_reserve, no_wait_gpu, new_mem, old_mem);
	}

	if (r) {
memcpy:
		r = ttm_bo_move_memcpy(bo, evict, no_wait_reserve, no_wait_gpu, new_mem);
	}
	return r;
}
예제 #2
0
파일: qxl_ttm.c 프로젝트: acton393/linux
static int qxl_bo_move(struct ttm_buffer_object *bo,
		       bool evict, bool interruptible,
		       bool no_wait_gpu,
		       struct ttm_mem_reg *new_mem)
{
	struct ttm_mem_reg *old_mem = &bo->mem;
	int ret;

	ret = ttm_bo_wait(bo, interruptible, no_wait_gpu);
	if (ret)
		return ret;


	if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
		qxl_move_null(bo, new_mem);
		return 0;
	}
	return ttm_bo_move_memcpy(bo, interruptible, no_wait_gpu,
				  new_mem);
}
예제 #3
0
static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
				  struct ttm_mem_reg *mem,
				  bool evict, bool interruptible,
				  bool no_wait_reserve, bool no_wait_gpu)
{
	struct ttm_bo_device *bdev = bo->bdev;
	bool old_is_pci = ttm_mem_reg_is_pci(bdev, &bo->mem);
	bool new_is_pci = ttm_mem_reg_is_pci(bdev, mem);
	struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type];
	struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type];
	int ret = 0;

	if (old_is_pci || new_is_pci ||
	    ((mem->placement & bo->mem.placement & TTM_PL_MASK_CACHING) == 0)) {
		ret = ttm_mem_io_lock(old_man, true);
		if (unlikely(ret != 0))
			goto out_err;
		ttm_bo_unmap_virtual_locked(bo);
		ttm_mem_io_unlock(old_man);
	}

	/*
	 * Create and bind a ttm if required.
	 */

	if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && (bo->ttm == NULL)) {
		ret = ttm_bo_add_ttm(bo, false);
		if (ret)
			goto out_err;

		ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement);
		if (ret)
			goto out_err;

		if (mem->mem_type != TTM_PL_SYSTEM) {
			ret = ttm_tt_bind(bo->ttm, mem);
			if (ret)
				goto out_err;
		}

		if (bo->mem.mem_type == TTM_PL_SYSTEM) {
			if (bdev->driver->move_notify)
				bdev->driver->move_notify(bo, mem);
			bo->mem = *mem;
			mem->mm_node = NULL;
			goto moved;
		}
	}

	if (bdev->driver->move_notify)
		bdev->driver->move_notify(bo, mem);

	if (!(old_man->flags & TTM_MEMTYPE_FLAG_FIXED) &&
	    !(new_man->flags & TTM_MEMTYPE_FLAG_FIXED))
		ret = ttm_bo_move_ttm(bo, evict, no_wait_reserve, no_wait_gpu, mem);
	else if (bdev->driver->move)
		ret = bdev->driver->move(bo, evict, interruptible,
					 no_wait_reserve, no_wait_gpu, mem);
	else
		ret = ttm_bo_move_memcpy(bo, evict, no_wait_reserve, no_wait_gpu, mem);

	if (ret)
		goto out_err;

moved:
	if (bo->evicted) {
		ret = bdev->driver->invalidate_caches(bdev, bo->mem.placement);
		if (ret)
			printk(KERN_ERR TTM_PFX "Can not flush read caches\n");
		bo->evicted = false;
	}

	if (bo->mem.mm_node) {
		bo->offset = (bo->mem.start << PAGE_SHIFT) +
		    bdev->man[bo->mem.mem_type].gpu_offset;
		bo->cur_placement = bo->mem.placement;
	} else
		bo->offset = 0;

	return 0;

out_err:
	new_man = &bdev->man[bo->mem.mem_type];
	if ((new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm) {
		ttm_tt_unbind(bo->ttm);
		ttm_tt_destroy(bo->ttm);
		bo->ttm = NULL;
	}

	return ret;
}