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authorZhenyu Wang <zhenyu.z.wang@intel.com>2009-07-23 17:25:49 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-08-03 09:04:47 +0100
commitff663cf8705bea101d5f73cf471855c85242575e (patch)
tree4b338298e69d2401cab848b4b9082bef07e5d9aa /include/linux/agp_backend.h
parent2a4ceb6d3e6a566cb4a9dc8f974177f031d27cd7 (diff)
downloadlinux-2.6.34-ux500-ff663cf8705bea101d5f73cf471855c85242575e.tar.gz
agp: Add generic support for graphics dma remapping
New driver hooks for support graphics memory dma remapping are introduced in this patch. It makes generic code can tell if current device needs dma remapping, then call driver provided interfaces for mapping and unmapping. Change has also been made to handle scratch_page in remapping case. Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include/linux/agp_backend.h')
-rw-r--r--include/linux/agp_backend.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h
index 76fa794fdac..8a294d65b9b 100644
--- a/include/linux/agp_backend.h
+++ b/include/linux/agp_backend.h
@@ -79,9 +79,13 @@ struct agp_memory {
u32 physical;
bool is_bound;
bool is_flushed;
- bool vmalloc_flag;
+ bool vmalloc_flag;
+ bool sg_vmalloc_flag;
/* list of agp_memory mapped to the aperture */
struct list_head mapped_list;
+ /* DMA-mapped addresses */
+ struct scatterlist *sg_list;
+ int num_sg;
};
#define AGP_NORMAL_MEMORY 0