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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2010-12-02 11:04:29 -0500 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-02-18 17:27:41 -0500 |
| commit | c39d35161e87f1d7c0628af6907ac66a8c77f63f (patch) | |
| tree | 56e8088e54b73badb79f7b01a1909ef9e89aa3d9 /drivers/gpu/drm/radeon/radeon_ttm.c | |
| parent | 27e8b237944af967e0a808580278d432cb028455 (diff) | |
| download | blackbird-op-linux-c39d35161e87f1d7c0628af6907ac66a8c77f63f.tar.gz blackbird-op-linux-c39d35161e87f1d7c0628af6907ac66a8c77f63f.zip | |
radeon/ttm/PCIe: Use dma_addr if TTM has set it.
If the TTM layer has used the DMA API to setup pages that are
TTM_PAGE_FLAG_DMA32 (look at patch titled: "ttm: Utilize the dma_addr_t
array for pages that are to in DMA32 pool."), lets use it
when programming the GART in the PCIe type cards.
This patch skips doing the pci_map_page (and pci_unmap_page) if
there is a DMA addresses passed in for that page. If the dma_address
is zero (or DMA_ERROR_CODE), then we continue on with our old
behaviour.
[v2: Fixed an indentation problem, added reviewed-by tag]
[v3: Added Acked-by Jerome]
Acked-by: Jerome Glisse <j.glisse@gmail.com>
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>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ttm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index 6f156e9d3f31..ca045058e498 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -647,6 +647,7 @@ struct radeon_ttm_backend { unsigned long num_pages; struct page **pages; struct page *dummy_read_page; + dma_addr_t *dma_addrs; bool populated; bool bound; unsigned offset; @@ -662,6 +663,7 @@ static int radeon_ttm_backend_populate(struct ttm_backend *backend, gtt = container_of(backend, struct radeon_ttm_backend, backend); gtt->pages = pages; + gtt->dma_addrs = dma_addrs; gtt->num_pages = num_pages; gtt->dummy_read_page = dummy_read_page; gtt->populated = true; @@ -674,6 +676,7 @@ static void radeon_ttm_backend_clear(struct ttm_backend *backend) gtt = container_of(backend, struct radeon_ttm_backend, backend); gtt->pages = NULL; + gtt->dma_addrs = NULL; gtt->num_pages = 0; gtt->dummy_read_page = NULL; gtt->populated = false; @@ -694,7 +697,7 @@ static int radeon_ttm_backend_bind(struct ttm_backend *backend, gtt->num_pages, bo_mem, backend); } r = radeon_gart_bind(gtt->rdev, gtt->offset, - gtt->num_pages, gtt->pages); + gtt->num_pages, gtt->pages, gtt->dma_addrs); if (r) { DRM_ERROR("failed to bind %lu pages at 0x%08X\n", gtt->num_pages, gtt->offset); |
