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>
diff --git a/drivers/gpu/drm/drm_memory.c b/drivers/gpu/drm/drm_memory.c
index 845081b4..0177012 100644
--- a/drivers/gpu/drm/drm_memory.c
+++ b/drivers/gpu/drm/drm_memory.c
@@ -167,6 +167,11 @@
}
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
index e53158f..f0de81a 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -1154,7 +1154,7 @@
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
index 0764b66..1c1b13e 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1089,6 +1089,7 @@
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,