drm/radeon: fixup issue with radeon and PAT support.

With new userspace libpciaccess we can get a conflicting mapping on the PCIE GART table in the video RAM. Always try and map it _wc. Signed-off-by: Dave Airlie <airlied@redhat.com>
git-mirror · Jul 15, 2008 · 242e3df · 242e3df
1 parent 50515af
commit 242e3df
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Showing 3 changed files with 7 additions and 1 deletion.
diff --git a/drivers/gpu/drm/drm_memory.c b/drivers/gpu/drm/drm_memory.c
@@ -167,6 +167,11 @@ void drm_core_ioremap(struct drm_map *map, struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_core_ioremap);
 
+void drm_core_ioremap_wc(struct drm_map *map, struct drm_device *dev)
+{
+	map->handle = ioremap_wc(map->offset, map->size);
+}
+EXPORT_SYMBOL(drm_core_ioremap_wc);
 void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev)
 {
 	if (!map->handle || !map->size)

diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -1154,7 +1154,7 @@ static int radeon_do_init_cp(struct drm_device * dev, drm_radeon_init_t * init)
 			dev_priv->gart_info.mapping.size =
 			    dev_priv->gart_info.table_size;
 
-			drm_core_ioremap(&dev_priv->gart_info.mapping, dev);
+			drm_core_ioremap_wc(&dev_priv->gart_info.mapping, dev);
 			dev_priv->gart_info.addr =
 			    dev_priv->gart_info.mapping.handle;
 

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
@@ -1089,6 +1089,7 @@ extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, unsigned long size);
 extern int drm_mm_add_space_to_tail(struct drm_mm *mm, unsigned long size);
 
 extern void drm_core_ioremap(struct drm_map *map, struct drm_device *dev);
+extern void drm_core_ioremap_wc(struct drm_map *map, struct drm_device *dev);
 extern void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev);
 
 static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev,