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

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This commit is contained in:
Robert Noland 2008-09-07 12:44:02 -04:00
parent 740f09bffd
commit 2880c86eb2
2 changed files with 12 additions and 2 deletions
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9
bsd-core/drmP.h
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@ -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);

5
bsd-core/drm_memory.c
View file

@ -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__