diff options
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_bo.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 1f5c67c579cf..36792bd4da77 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -343,6 +343,16 @@ static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) if (unlikely(bo->ttm == NULL)) ret = -ENOMEM; break; + case ttm_bo_type_sg: + bo->ttm = bdev->driver->ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, + page_flags | TTM_PAGE_FLAG_SG, + glob->dummy_read_page); + if (unlikely(bo->ttm == NULL)) { + ret = -ENOMEM; + break; + } + bo->ttm->sg = bo->sg; + break; default: pr_err("Illegal buffer object type\n"); ret = -EINVAL; @@ -1169,6 +1179,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev, bool interruptible, struct file *persistent_swap_storage, size_t acc_size, + struct sg_table *sg, void (*destroy) (struct ttm_buffer_object *)) { int ret = 0; @@ -1223,6 +1234,7 @@ int ttm_bo_init(struct ttm_bo_device *bdev, bo->seq_valid = false; bo->persistent_swap_storage = persistent_swap_storage; bo->acc_size = acc_size; + bo->sg = sg; atomic_inc(&bo->glob->bo_count); ret = ttm_bo_check_placement(bo, placement); @@ -1233,7 +1245,8 @@ int ttm_bo_init(struct ttm_bo_device *bdev, * For ttm_bo_type_device buffers, allocate * address space from the device. */ - if (bo->type == ttm_bo_type_device) { + if (bo->type == ttm_bo_type_device || + bo->type == ttm_bo_type_sg) { ret = ttm_bo_setup_vm(bo); if (ret) goto out_err; @@ -1312,7 +1325,7 @@ int ttm_bo_create(struct ttm_bo_device *bdev, ret = ttm_bo_init(bdev, bo, size, type, placement, page_alignment, buffer_start, interruptible, - persistent_swap_storage, acc_size, NULL); + persistent_swap_storage, acc_size, NULL, NULL); if (likely(ret == 0)) *p_bo = bo; |