int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_buffer_object *bo, uint32_t page_flags) { struct ttm_tt *ttm = &ttm_dma->ttm; ttm_tt_init_fields(ttm, bo, page_flags); INIT_LIST_HEAD(&ttm_dma->pages_list); if (ttm_dma_tt_alloc_page_directory(ttm_dma)) { ttm_tt_destroy(ttm); pr_err("Failed allocating page table\n"); return -ENOMEM; } return 0; }
int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_bo_device *bdev, unsigned long size, uint32_t page_flags, struct page *dummy_read_page) { struct ttm_tt *ttm = &ttm_dma->ttm; ttm->bdev = bdev; ttm->glob = bdev->glob; ttm->num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; ttm->caching_state = tt_cached; ttm->page_flags = page_flags; ttm->dummy_read_page = dummy_read_page; ttm->state = tt_unpopulated; ttm->swap_storage = NULL; INIT_LIST_HEAD(&ttm_dma->pages_list); ttm_dma_tt_alloc_page_directory(ttm_dma); if (!ttm->pages) { ttm_tt_destroy(ttm); pr_err("Failed allocating page table\n"); return -ENOMEM; } return 0; }