DRI CVS merge: memory barrier updates

drivers/char/drm/drm_os_linux.h

@@ -11,8 +11,9 @@
 #define DRM_READ32(map, offset)		readl(((unsigned long)(map)->handle) + (offset))
 #define DRM_WRITE8(map, offset, val)	writeb(val, ((unsigned long)(map)->handle) + (offset))
 #define DRM_WRITE32(map, offset, val)	writel(val, ((unsigned long)(map)->handle) + (offset))
-#define DRM_READMEMORYBARRIER(map)	mb()
-#define DRM_WRITEMEMORYBARRIER(map)	wmb()
+#define DRM_READMEMORYBARRIER()		rmb()
+#define DRM_WRITEMEMORYBARRIER()	wmb()
+#define DRM_MEMORYBARRIER()		mb()
 #define DRM_DEVICE	drm_file_t	*priv	= filp->private_data; \
 			drm_device_t	*dev	= priv->dev
 

drivers/char/drm/mga_drv.h

@@ -131,7 +131,7 @@ extern int  mga_getparam( DRM_IOCTL_ARGS );
 extern int mga_warp_install_microcode( drm_mga_private_t *dev_priv );
 extern int mga_warp_init( drm_mga_private_t *dev_priv );
 
-#define mga_flush_write_combine()	DRM_WRITEMEMORYBARRIER(dev_priv->primary)
+#define mga_flush_write_combine()	DRM_WRITEMEMORYBARRIER()
 
 #if defined(__linux__) && defined(__alpha__)
 #define MGA_BASE( reg )		((unsigned long)(dev_priv->mmio->handle))
@@ -142,12 +142,12 @@ extern int mga_warp_init( drm_mga_private_t *dev_priv );
 
 #define MGA_READ( reg )		(_MGA_READ((u32 *)MGA_ADDR(reg)))
 #define MGA_READ8( reg )	(_MGA_READ((u8 *)MGA_ADDR(reg)))
-#define MGA_WRITE( reg, val )	do { DRM_WRITEMEMORYBARRIER(dev_priv->mmio); MGA_DEREF( reg ) = val; } while (0)
-#define MGA_WRITE8( reg, val )  do { DRM_WRITEMEMORYBARRIER(dev_priv->mmio); MGA_DEREF8( reg ) = val; } while (0)
+#define MGA_WRITE( reg, val )	do { DRM_WRITEMEMORYBARRIER(); MGA_DEREF( reg ) = val; } while (0)
+#define MGA_WRITE8( reg, val )  do { DRM_WRITEMEMORYBARRIER(); MGA_DEREF8( reg ) = val; } while (0)
 
 static inline u32 _MGA_READ(u32 *addr)
 {
-	DRM_READMEMORYBARRIER(dev_priv->mmio);
+	DRM_MEMORYBARRIER();
 	return *(volatile u32 *)addr;
 }
 #else

drivers/char/drm/r128_drv.h

@@ -440,7 +440,7 @@ do {									\
 #if defined(__powerpc__)
 #define r128_flush_write_combine()	(void) GET_RING_HEAD( &dev_priv->ring )
 #else
-#define r128_flush_write_combine()	DRM_WRITEMEMORYBARRIER(dev_priv->ring_rptr)
+#define r128_flush_write_combine()	DRM_WRITEMEMORYBARRIER()
 #endif
 
 

drivers/char/drm/radeon_drv.h

@@ -852,7 +852,7 @@ do {									\
 
 #define COMMIT_RING() do {						\
 	/* Flush writes to ring */					\
-	DRM_READMEMORYBARRIER( dev_priv->mmio );			\
+	DRM_MEMORYBARRIER();						\
 	GET_RING_HEAD( dev_priv );					\
 	RADEON_WRITE( RADEON_CP_RB_WPTR, dev_priv->ring.tail );		\
 	/* read from PCI bus to ensure correct posting */		\