diff options
Diffstat (limited to 'bsd/drm_os_freebsd.h')
| -rw-r--r-- | bsd/drm_os_freebsd.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/bsd/drm_os_freebsd.h b/bsd/drm_os_freebsd.h index 8331d246..7b19acc2 100644 --- a/bsd/drm_os_freebsd.h +++ b/bsd/drm_os_freebsd.h @@ -114,7 +114,6 @@ #define DRM_DEVICE drm_device_t *dev = kdev->si_drv1 #define DRM_MALLOC(size) malloc( size, DRM(M_DRM), M_NOWAIT ) #define DRM_FREE(pt,size) free( pt, DRM(M_DRM) ) -#define DRM_VTOPHYS(addr) vtophys(addr) /* Read/write from bus space, with byteswapping to le if necessary */ #define DRM_READ8(map, offset) *(volatile u_int8_t *) (((unsigned long)(map)->handle) + (offset)) @@ -206,10 +205,21 @@ while (!condition) { \ #define DRM_GET_USER_UNCHECKED(val, uaddr) \ ((val) = fuword(uaddr), 0) -#define DRM_WRITEMEMORYBARRIER( map ) \ - bus_space_barrier((map)->iot, (map)->ioh, 0, (map)->size, 0); -#define DRM_READMEMORYBARRIER( map ) \ - bus_space_barrier((map)->iot, (map)->ioh, 0, (map)->size, BUS_SPACE_BARRIER_READ); +/* DRM_READMEMORYBARRIER() prevents reordering of reads. + * DRM_WRITEMEMORYBARRIER() prevents reordering of writes. + * DRM_MEMORYBARRIER() prevents reordering of reads and writes. + */ +#if defined(__i386__) +#define DRM_READMEMORYBARRIER() __asm __volatile( \ + "lock; addl $0,0(%%esp)" : : : "memory"); +#define DRM_WRITEMEMORYBARRIER() __asm __volatile("" : : : "memory"); +#define DRM_MEMORYBARRIER() __asm __volatile( \ + "lock; addl $0,0(%%esp)" : : : "memory"); +#elif defined(__alpha__) +#define DRM_READMEMORYBARRIER() alpha_mb(); +#define DRM_WRITEMEMORYBARRIER() alpha_wmb(); +#define DRM_MEMORYBARRIER() alpha_mb(); +#endif #define PAGE_ALIGN(addr) round_page(addr) |