[FreeBSD] Implement drm_ioremap_wc() to set a range of mem to write-combining

diff --git a/bsd-core/drmP.h b/bsd-core/drmP.h
index f8705e3..de59f42 100644 (file)
--- a/bsd-core/drmP.h
+++ b/bsd-core/drmP.h
@@ -70,6 +70,7 @@ typedef struct drm_file drm_file_t;
 #include <machine/pmap.h>
 #include <machine/bus.h>
 #include <machine/resource.h>
+#include <machine/specialreg.h>
 #include <machine/sysarch.h>
 #include <sys/endian.h>
 #include <sys/mman.h>
@@ -897,6 +898,7 @@ void        *drm_calloc(size_t nmemb, size_t size, int area);
 void   *drm_realloc(void *oldpt, size_t oldsize, size_t size,
                                   int area);
 void   drm_free(void *pt, size_t size, int area);
+void   *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map);
 void   *drm_ioremap(struct drm_device *dev, drm_local_map_t *map);
 void   drm_ioremapfree(drm_local_map_t *map);
 int    drm_mtrr_add(unsigned long offset, size_t size, int flags);
@@ -1110,10 +1112,13 @@ drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
                                size_t align, dma_addr_t maxaddr);
 void   drm_pci_free(struct drm_device *dev, drm_dma_handle_t *dmah);
 
-#define drm_core_ioremap_wc drm_core_ioremap
-
 /* Inline replacements for DRM_IOREMAP macros */
 static __inline__ void
+drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev)
+{
+       map->handle = drm_ioremap_wc(dev, map);
+}
+static __inline__ void
 drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev)
 {
        map->handle = drm_ioremap(dev, map);

diff --git a/bsd-core/drm_memory.c b/bsd-core/drm_memory.c
index 8089140..272c087 100644 (file)
--- a/bsd-core/drm_memory.c
+++ b/bsd-core/drm_memory.c
@@ -80,6 +80,11 @@ void drm_free(void *pt, size_t size, int area)
        free(pt, M_DRM);
 }
 
+void *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map)
+{
+       return pmap_mapdev_attr(map->offset, map->size, PAT_WRITE_COMBINING);
+}
+
 void *drm_ioremap(struct drm_device *dev, drm_local_map_t *map)
 {
 #ifdef __FreeBSD__