ttm: Introduce a placeholder for DMA (bus) addresses.
This is right now limited to only non-pool constructs.
[v2: Fixed indentation issues, add review-by tag]
Reviewed-by: Thomas Hellstrom <thomas@shipmail.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Ian Campbell <ian.campbell@citrix.com>
diff --git a/include/drm/ttm/ttm_page_alloc.h b/include/drm/ttm/ttm_page_alloc.h
index 1168214..8062890 100644
--- a/include/drm/ttm/ttm_page_alloc.h
+++ b/include/drm/ttm/ttm_page_alloc.h
@@ -36,11 +36,13 @@
* @flags: ttm flags for page allocation.
* @cstate: ttm caching state for the page.
* @count: number of pages to allocate.
+ * @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set).
*/
int ttm_get_pages(struct list_head *pages,
int flags,
enum ttm_caching_state cstate,
- unsigned count);
+ unsigned count,
+ dma_addr_t *dma_address);
/**
* Put linked list of pages to pool.
*
@@ -49,11 +51,13 @@
* count.
* @flags: ttm flags for page allocation.
* @cstate: ttm caching state.
+ * @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set).
*/
void ttm_put_pages(struct list_head *pages,
unsigned page_count,
int flags,
- enum ttm_caching_state cstate);
+ enum ttm_caching_state cstate,
+ dma_addr_t *dma_address);
/**
* Initialize pool allocator.
*/