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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2010-12-02 18:24:13 +0300
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-01-28 00:07:58 +0300
commit27e8b237944af967e0a808580278d432cb028455 (patch)
tree28d1b8ef8ad2477afeb7874f3bdf5e86a9434e96 /include/drm
parent69a07f0b117a40fcc1a479358d8e1f41793617f2 (diff)
downloadlinux-27e8b237944af967e0a808580278d432cb028455.tar.xz
ttm: Expand (*populate) to support an array of DMA addresses.
We pass in the array of ttm pages to be populated in the GART/MM of the card (or AGP). Patch titled: "ttm: Utilize the DMA API for pages that have TTM_PAGE_FLAG_DMA32 set." uses the DMA API to make those pages have a proper DMA addresses (in the situation where page_to_phys or virt_to_phys do not give use the DMA (bus) address). Since we are using the DMA API on those pages, we should pass in the DMA address to this function so it can save it in its proper fields (later patches use it). [v2: Added reviewed-by tag] Reviewed-by: Thomas Hellstrom <thellstrom@shipmail.org> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Ian Campbell <ian.campbell@citrix.com>
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/ttm/ttm_bo_driver.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 6dc4fccda73c..ebcd3dd7203b 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -50,13 +50,15 @@ struct ttm_backend_func {
* @pages: Array of pointers to ttm pages.
* @dummy_read_page: Page to be used instead of NULL pages in the
* array @pages.
+ * @dma_addrs: Array of DMA (bus) address of the ttm pages.
*
* Populate the backend with ttm pages. Depending on the backend,
* it may or may not copy the @pages array.
*/
int (*populate) (struct ttm_backend *backend,
unsigned long num_pages, struct page **pages,
- struct page *dummy_read_page);
+ struct page *dummy_read_page,
+ dma_addr_t *dma_addrs);
/**
* struct ttm_backend_func member clear
*