Clean up BSD MTRR handling. The NetBSD code is untested, but it's my best

    shot.

12 files changed, 180 insertions, 192 deletions

diff --git a/bsd-core/drmP.h b/bsd-core/drmP.h
index 67915374..b2e045e6 100644
--- a/bsd-core/drmP.h
+++ b/bsd-core/drmP.h
@@ -403,6 +403,8 @@ extern void	     *DRM(realloc)(void *oldpt, size_t oldsize, size_t size,
 extern void	     DRM(free)(void *pt, size_t size, int area);
 extern void	     *DRM(ioremap)(drm_device_t *dev, drm_local_map_t *map);
 extern void	     DRM(ioremapfree)(drm_local_map_t *map);
+extern int	 DRM(mtrr_add)(unsigned long offset, size_t size, int flags);
+extern int	 DRM(mtrr_del)(unsigned long offset, size_t size, int flags);
 
 #if __REALLY_HAVE_AGP
 extern agp_memory    *DRM(alloc_agp)(int pages, u32 type);
diff --git a/bsd-core/drm_bufs.c b/bsd-core/drm_bufs.c
index cdd2359d..0dc923d7 100644
--- a/bsd-core/drm_bufs.c
+++ b/bsd-core/drm_bufs.c
@@ -115,25 +115,12 @@ int DRM(addmap)( DRM_IOCTL_ARGS )
 #if __REALLY_HAVE_MTRR
 		if ( map->type == _DRM_FRAME_BUFFER ||
 		     (map->flags & _DRM_WRITE_COMBINING) ) {
-#ifdef __FreeBSD__
-			int retcode = 0, act;
-			struct mem_range_desc mrdesc;
-			mrdesc.mr_base = map->offset;
-			mrdesc.mr_len = map->size;
-			mrdesc.mr_flags = MDF_WRITECOMBINE;
-			act = MEMRANGE_SET_UPDATE;
-			bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
-			retcode = mem_range_attr_set(&mrdesc, &act);
-			map->mtrr=1;
-#elif defined __NetBSD__
-			struct mtrr mtrrmap;
-			int one = 1;
-			mtrrmap.base = map->offset;
-			mtrrmap.len = map->size;
-			mtrrmap.type = MTRR_TYPE_WC;
-			mtrrmap.flags = MTRR_VALID;
-			map->mtrr = mtrr_set( &mtrrmap, &one, p, MTRR_GETSET_KERNEL );
-#endif
+			int mtrr;
+			     
+			mtrr = DRM(mtrr_add)(map->offset, map->size,
+			     DRM_MTRR_WC);
+			if (mtrr == 0)
+				map->mtrr = 1;
 		}
 #endif /* __REALLY_HAVE_MTRR */
 		DRM_IOREMAP(map, dev);
@@ -235,29 +222,11 @@ int DRM(rmmap)( DRM_IOCTL_ARGS )
 	case _DRM_FRAME_BUFFER:
 #if __REALLY_HAVE_MTRR
 		if (map->mtrr >= 0) {
-			int retcode;
-#ifdef __FreeBSD__
-			int act;
-			struct mem_range_desc mrdesc;
-			mrdesc.mr_base = map->offset;
-			mrdesc.mr_len = map->size;
-			mrdesc.mr_flags = MDF_WRITECOMBINE;
-			act = MEMRANGE_SET_REMOVE;
-			bcopy(DRIVER_NAME, &mrdesc.mr_owner,
-			    strlen(DRIVER_NAME));
-			retcode = mem_range_attr_set(&mrdesc, &act);
-#elif defined __NetBSD__
-			struct mtrr mtrrmap;
-			int one = 1;
-			mtrrmap.base = map->offset;
-			mtrrmap.len = map->size;
-			mtrrmap.type = 0;
-			mtrrmap.flags = 0;
-			mtrrmap.owner = p->p_pid;
-			retcode = mtrr_set(&mtrrmap, &one, p,
-			    MTRR_GETSET_KERNEL);
-			DRM_DEBUG("mtrr_del = %d\n", retcode);
-#endif
+			int __unused mtrr;
+			
+			mtrr = DRM(mtrr_del)(map->offset, map->size,
+			    DRM_MTRR_WC);
+			DRM_DEBUG("mtrr_del = %d\n", mtrr);
 		}
 #endif
 		DRM(ioremapfree)(map);
diff --git a/bsd-core/drm_drv.c b/bsd-core/drm_drv.c
index 731f31da..269f4225 100644
--- a/bsd-core/drm_drv.c
+++ b/bsd-core/drm_drv.c
@@ -565,28 +565,11 @@ static int DRM(takedown)( drm_device_t *dev )
 			case _DRM_FRAME_BUFFER:
 #if __REALLY_HAVE_MTRR
 				if ( map->mtrr >= 0 ) {
-					int retcode;
-#ifdef __FreeBSD__
-					int act;
-					struct mem_range_desc mrdesc;
-					mrdesc.mr_base = map->offset;
-					mrdesc.mr_len = map->size;
-					mrdesc.mr_flags = MDF_WRITECOMBINE;
-					act = MEMRANGE_SET_REMOVE;
-					bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
-					retcode = mem_range_attr_set(&mrdesc, &act);
-					map->mtrr=1;
-#elif defined __NetBSD__
-					struct mtrr mtrrmap;
-					int one = 1;
-					mtrrmap.base = map->offset;
-					mtrrmap.len = map->size;
-					mtrrmap.type = MTRR_TYPE_WC;
-					mtrrmap.flags = 0;
-					retcode = mtrr_set( &mtrrmap, &one, 
-						DRM_CURPROC, MTRR_GETSET_KERNEL);
-#endif
-					DRM_DEBUG( "mtrr_del=%d\n", retcode );
+					int __unused mtrr;
+
+					mtrr = DRM(mtrr_del)(map->offset,
+					    map->size, DRM_MTRR_WC);
+					DRM_DEBUG("mtrr_del=%d\n", mtrr);
 				}
 #endif
 				DRM(ioremapfree)( map );
@@ -680,25 +663,12 @@ static int DRM(init)( device_t nbdev )
 #endif /* __MUST_HAVE_AGP */
 #if __REALLY_HAVE_MTRR
 	if (dev->agp) {
-#ifdef __FreeBSD__
-		int retcode = 0, act;
-		struct mem_range_desc mrdesc;
-		mrdesc.mr_base = dev->agp->info.ai_aperture_base;
-		mrdesc.mr_len = dev->agp->info.ai_aperture_size;
-		mrdesc.mr_flags = MDF_WRITECOMBINE;
-		act = MEMRANGE_SET_UPDATE;
-		bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
-		retcode = mem_range_attr_set(&mrdesc, &act);
-		dev->agp->agp_mtrr=1;
-#elif defined __NetBSD__
-		struct mtrr mtrrmap;
-		int one = 1;
-		mtrrmap.base = dev->agp->info.ai_aperture_base;
-		mtrrmap.len = dev->agp->info.ai_aperture_size;
-		mtrrmap.type = MTRR_TYPE_WC;
-		mtrrmap.flags = MTRR_VALID;
-		dev->agp->agp_mtrr = mtrr_set( &mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
-#endif /* __NetBSD__ */
+		int retcode;
+		
+		retcode = DRM(mtrr_add)(dev->agp->info.ai_aperture_base,
+		    dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
+		if (retcode == 0)
+			dev->agp->agp_mtrr=1;
 	}
 #endif /* __REALLY_HAVE_MTRR */
 #endif /* __REALLY_HAVE_AGP */
@@ -742,12 +712,6 @@ error:
  */
 static void DRM(cleanup)(drm_device_t *dev)
 {
-#ifdef __NetBSD__
-#if __REALLY_HAVE_MTRR
-	struct mtrr mtrrmap;
-	int one = 1;
-#endif /* __REALLY_HAVE_MTRR */
-#endif /* __NetBSD__ */
 
 	DRM_DEBUG( "\n" );
 
@@ -761,13 +725,11 @@ static void DRM(cleanup)(drm_device_t *dev)
 
 #if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR
 	if ( dev->agp && dev->agp->agp_mtrr >= 0) {
-#if defined(__NetBSD__)
-		mtrrmap.base = dev->agp->info.ai_aperture_base;
-		mtrrmap.len = dev->agp->info.ai_aperture_size;
-		mtrrmap.type = 0;
-		mtrrmap.flags = 0;
-		mtrr_set( &mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
-#endif
+		int __unused mtrr;
+
+		mtrr = DRM(mtrr_del)(dev->agp->info.ai_aperture_base,
+		    dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
+		DRM_DEBUG("mtrr_del=%d\n", mtrr);
 	}
 #endif
 
diff --git a/bsd-core/drm_memory.c b/bsd-core/drm_memory.c
index dc0d3753..a50e6c47 100644
--- a/bsd-core/drm_memory.c
+++ b/bsd-core/drm_memory.c
@@ -124,5 +124,62 @@ int DRM(unbind_agp)(agp_memory *handle)
 {
 	return DRM(agp_unbind_memory)(handle);
 }
+
+#ifdef __FreeBSD__
+int
+DRM(mtrr_add)(unsigned long offset, size_t size, int flags)
+{
+	int act;
+	struct mem_range_desc mrdesc;
+
+	mrdesc.mr_base = offset;
+	mrdesc.mr_len = size;
+	mrdesc.mr_flags = flags;
+	act = MEMRANGE_SET_UPDATE;
+	bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
+	return mem_range_attr_set(&mrdesc, &act);
+}
+
+int
+DRM(mtrr_del)(unsigned long offset, size_t size, int flags)
+{
+	int act;
+	struct mem_range_desc mrdesc;
+
+	mrdesc.mr_base = offset;
+	mrdesc.mr_len = size;
+	mrdesc.mr_flags = flags;
+	act = MEMRANGE_SET_REMOVE;
+	bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
+	return mem_range_attr_set(&mrdesc, &act);
+}
+#elif defined(__NetBSD__)
+int
+DRM(mtrr_add)(unsigned long offset, size_t size, int flags)
+{
+	struct mtrr mtrrmap;
+	int one = 1;
+
+	mtrrmap.base = offset;
+	mtrrmap.len = size;
+	mtrrmap.type = flags;
+	mtrrmap.flags = MTRR_VALID;
+	return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
+}
+
+int
+DRM(mtrr_del)(unsigned long offset, size_t size, int flags)
+{
+	struct mtrr mtrrmap;
+	int one = 1;
+
+	mtrrmap.base = offset;
+	mtrrmap.len = size;
+	mtrrmap.type = flags;
+	mtrrmap.flags = 0;
+	return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
+}
+#endif
+
 #endif /* __REALLY_HAVE_AGP */
 #endif /* DEBUG_MEMORY */
diff --git a/bsd-core/drm_os_freebsd.h b/bsd-core/drm_os_freebsd.h
index 320db342..33bdcd20 100644
--- a/bsd-core/drm_os_freebsd.h
+++ b/bsd-core/drm_os_freebsd.h
@@ -171,6 +171,8 @@ typedef void			irqreturn_t;
 #define DRM_AGP_FIND_DEVICE()	agp_find_device()
 #define DRM_ERR(v)		v
 
+#define DRM_MTRR_WC	MDF_WRITECOMBINE
+
 #define LOCK_TEST_WITH_RETURN(dev, filp)				\
 do {									\
 	if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ||		\
diff --git a/bsd-core/drm_os_netbsd.h b/bsd-core/drm_os_netbsd.h
index 7653b05e..1554d24d 100644
--- a/bsd-core/drm_os_netbsd.h
+++ b/bsd-core/drm_os_netbsd.h
@@ -136,6 +136,8 @@ extern const int DRM(M_DRM) = M_DEVBUF;
 #define DRM_WRITE8(map, offset, val)	bus_space_write_1( (map)->iot, (map)->ioh, (offset), (val) )
 #define DRM_WRITE32(map, offset, val)	bus_space_write_4( (map)->iot, (map)->ioh, (offset), (val) )
 
+#define DRM_MTRR_WC	MTRR_TYPE_WC
+
 #define DRM_AGP_FIND_DEVICE()	agp_find_device(0)
 
 #define LOCK_TEST_WITH_RETURN(dev, filp)				\
diff --git a/bsd/drmP.h b/bsd/drmP.h
index 67915374..b2e045e6 100644
--- a/bsd/drmP.h
+++ b/bsd/drmP.h
@@ -403,6 +403,8 @@ extern void	     *DRM(realloc)(void *oldpt, size_t oldsize, size_t size,
 extern void	     DRM(free)(void *pt, size_t size, int area);
 extern void	     *DRM(ioremap)(drm_device_t *dev, drm_local_map_t *map);
 extern void	     DRM(ioremapfree)(drm_local_map_t *map);
+extern int	 DRM(mtrr_add)(unsigned long offset, size_t size, int flags);
+extern int	 DRM(mtrr_del)(unsigned long offset, size_t size, int flags);
 
 #if __REALLY_HAVE_AGP
 extern agp_memory    *DRM(alloc_agp)(int pages, u32 type);
diff --git a/bsd/drm_bufs.h b/bsd/drm_bufs.h
index cdd2359d..0dc923d7 100644
--- a/bsd/drm_bufs.h
+++ b/bsd/drm_bufs.h
@@ -115,25 +115,12 @@ int DRM(addmap)( DRM_IOCTL_ARGS )
 #if __REALLY_HAVE_MTRR
 		if ( map->type == _DRM_FRAME_BUFFER ||
 		     (map->flags & _DRM_WRITE_COMBINING) ) {
-#ifdef __FreeBSD__
-			int retcode = 0, act;
-			struct mem_range_desc mrdesc;
-			mrdesc.mr_base = map->offset;
-			mrdesc.mr_len = map->size;
-			mrdesc.mr_flags = MDF_WRITECOMBINE;
-			act = MEMRANGE_SET_UPDATE;
-			bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
-			retcode = mem_range_attr_set(&mrdesc, &act);
-			map->mtrr=1;
-#elif defined __NetBSD__
-			struct mtrr mtrrmap;
-			int one = 1;
-			mtrrmap.base = map->offset;
-			mtrrmap.len = map->size;
-			mtrrmap.type = MTRR_TYPE_WC;
-			mtrrmap.flags = MTRR_VALID;
-			map->mtrr = mtrr_set( &mtrrmap, &one, p, MTRR_GETSET_KERNEL );
-#endif
+			int mtrr;
+			     
+			mtrr = DRM(mtrr_add)(map->offset, map->size,
+			     DRM_MTRR_WC);
+			if (mtrr == 0)
+				map->mtrr = 1;
 		}
 #endif /* __REALLY_HAVE_MTRR */
 		DRM_IOREMAP(map, dev);
@@ -235,29 +222,11 @@ int DRM(rmmap)( DRM_IOCTL_ARGS )
 	case _DRM_FRAME_BUFFER:
 #if __REALLY_HAVE_MTRR
 		if (map->mtrr >= 0) {
-			int retcode;
-#ifdef __FreeBSD__
-			int act;
-			struct mem_range_desc mrdesc;
-			mrdesc.mr_base = map->offset;
-			mrdesc.mr_len = map->size;
-			mrdesc.mr_flags = MDF_WRITECOMBINE;
-			act = MEMRANGE_SET_REMOVE;
-			bcopy(DRIVER_NAME, &mrdesc.mr_owner,
-			    strlen(DRIVER_NAME));
-			retcode = mem_range_attr_set(&mrdesc, &act);
-#elif defined __NetBSD__
-			struct mtrr mtrrmap;
-			int one = 1;
-			mtrrmap.base = map->offset;
-			mtrrmap.len = map->size;
-			mtrrmap.type = 0;
-			mtrrmap.flags = 0;
-			mtrrmap.owner = p->p_pid;
-			retcode = mtrr_set(&mtrrmap, &one, p,
-			    MTRR_GETSET_KERNEL);
-			DRM_DEBUG("mtrr_del = %d\n", retcode);
-#endif
+			int __unused mtrr;
+			
+			mtrr = DRM(mtrr_del)(map->offset, map->size,
+			    DRM_MTRR_WC);
+			DRM_DEBUG("mtrr_del = %d\n", mtrr);
 		}
 #endif
 		DRM(ioremapfree)(map);
diff --git a/bsd/drm_drv.h b/bsd/drm_drv.h
index 731f31da..269f4225 100644
--- a/bsd/drm_drv.h
+++ b/bsd/drm_drv.h
@@ -565,28 +565,11 @@ static int DRM(takedown)( drm_device_t *dev )
 			case _DRM_FRAME_BUFFER:
 #if __REALLY_HAVE_MTRR
 				if ( map->mtrr >= 0 ) {
-					int retcode;
-#ifdef __FreeBSD__
-					int act;
-					struct mem_range_desc mrdesc;
-					mrdesc.mr_base = map->offset;
-					mrdesc.mr_len = map->size;
-					mrdesc.mr_flags = MDF_WRITECOMBINE;
-					act = MEMRANGE_SET_REMOVE;
-					bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
-					retcode = mem_range_attr_set(&mrdesc, &act);
-					map->mtrr=1;
-#elif defined __NetBSD__
-					struct mtrr mtrrmap;
-					int one = 1;
-					mtrrmap.base = map->offset;
-					mtrrmap.len = map->size;
-					mtrrmap.type = MTRR_TYPE_WC;
-					mtrrmap.flags = 0;
-					retcode = mtrr_set( &mtrrmap, &one, 
-						DRM_CURPROC, MTRR_GETSET_KERNEL);
-#endif
-					DRM_DEBUG( "mtrr_del=%d\n", retcode );
+					int __unused mtrr;
+
+					mtrr = DRM(mtrr_del)(map->offset,
+					    map->size, DRM_MTRR_WC);
+					DRM_DEBUG("mtrr_del=%d\n", mtrr);
 				}
 #endif
 				DRM(ioremapfree)( map );
@@ -680,25 +663,12 @@ static int DRM(init)( device_t nbdev )
 #endif /* __MUST_HAVE_AGP */
 #if __REALLY_HAVE_MTRR
 	if (dev->agp) {
-#ifdef __FreeBSD__
-		int retcode = 0, act;
-		struct mem_range_desc mrdesc;
-		mrdesc.mr_base = dev->agp->info.ai_aperture_base;
-		mrdesc.mr_len = dev->agp->info.ai_aperture_size;
-		mrdesc.mr_flags = MDF_WRITECOMBINE;
-		act = MEMRANGE_SET_UPDATE;
-		bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
-		retcode = mem_range_attr_set(&mrdesc, &act);
-		dev->agp->agp_mtrr=1;
-#elif defined __NetBSD__
-		struct mtrr mtrrmap;
-		int one = 1;
-		mtrrmap.base = dev->agp->info.ai_aperture_base;
-		mtrrmap.len = dev->agp->info.ai_aperture_size;
-		mtrrmap.type = MTRR_TYPE_WC;
-		mtrrmap.flags = MTRR_VALID;
-		dev->agp->agp_mtrr = mtrr_set( &mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
-#endif /* __NetBSD__ */
+		int retcode;
+		
+		retcode = DRM(mtrr_add)(dev->agp->info.ai_aperture_base,
+		    dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
+		if (retcode == 0)
+			dev->agp->agp_mtrr=1;
 	}
 #endif /* __REALLY_HAVE_MTRR */
 #endif /* __REALLY_HAVE_AGP */
@@ -742,12 +712,6 @@ error:
  */
 static void DRM(cleanup)(drm_device_t *dev)
 {
-#ifdef __NetBSD__
-#if __REALLY_HAVE_MTRR
-	struct mtrr mtrrmap;
-	int one = 1;
-#endif /* __REALLY_HAVE_MTRR */
-#endif /* __NetBSD__ */
 
 	DRM_DEBUG( "\n" );
 
@@ -761,13 +725,11 @@ static void DRM(cleanup)(drm_device_t *dev)
 
 #if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR
 	if ( dev->agp && dev->agp->agp_mtrr >= 0) {
-#if defined(__NetBSD__)
-		mtrrmap.base = dev->agp->info.ai_aperture_base;
-		mtrrmap.len = dev->agp->info.ai_aperture_size;
-		mtrrmap.type = 0;
-		mtrrmap.flags = 0;
-		mtrr_set( &mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
-#endif
+		int __unused mtrr;
+
+		mtrr = DRM(mtrr_del)(dev->agp->info.ai_aperture_base,
+		    dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
+		DRM_DEBUG("mtrr_del=%d\n", mtrr);
 	}
 #endif
 
diff --git a/bsd/drm_memory.h b/bsd/drm_memory.h
index dc0d3753..a50e6c47 100644
--- a/bsd/drm_memory.h
+++ b/bsd/drm_memory.h
@@ -124,5 +124,62 @@ int DRM(unbind_agp)(agp_memory *handle)
 {
 	return DRM(agp_unbind_memory)(handle);
 }
+
+#ifdef __FreeBSD__
+int
+DRM(mtrr_add)(unsigned long offset, size_t size, int flags)
+{
+	int act;
+	struct mem_range_desc mrdesc;
+
+	mrdesc.mr_base = offset;
+	mrdesc.mr_len = size;
+	mrdesc.mr_flags = flags;
+	act = MEMRANGE_SET_UPDATE;
+	bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
+	return mem_range_attr_set(&mrdesc, &act);
+}
+
+int
+DRM(mtrr_del)(unsigned long offset, size_t size, int flags)
+{
+	int act;
+	struct mem_range_desc mrdesc;
+
+	mrdesc.mr_base = offset;
+	mrdesc.mr_len = size;
+	mrdesc.mr_flags = flags;
+	act = MEMRANGE_SET_REMOVE;
+	bcopy(DRIVER_NAME, &mrdesc.mr_owner, strlen(DRIVER_NAME));
+	return mem_range_attr_set(&mrdesc, &act);
+}
+#elif defined(__NetBSD__)
+int
+DRM(mtrr_add)(unsigned long offset, size_t size, int flags)
+{
+	struct mtrr mtrrmap;
+	int one = 1;
+
+	mtrrmap.base = offset;
+	mtrrmap.len = size;
+	mtrrmap.type = flags;
+	mtrrmap.flags = MTRR_VALID;
+	return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
+}
+
+int
+DRM(mtrr_del)(unsigned long offset, size_t size, int flags)
+{
+	struct mtrr mtrrmap;
+	int one = 1;
+
+	mtrrmap.base = offset;
+	mtrrmap.len = size;
+	mtrrmap.type = flags;
+	mtrrmap.flags = 0;
+	return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
+}
+#endif
+
 #endif /* __REALLY_HAVE_AGP */
 #endif /* DEBUG_MEMORY */
diff --git a/bsd/drm_os_freebsd.h b/bsd/drm_os_freebsd.h
index 320db342..33bdcd20 100644
--- a/bsd/drm_os_freebsd.h
+++ b/bsd/drm_os_freebsd.h
@@ -171,6 +171,8 @@ typedef void			irqreturn_t;
 #define DRM_AGP_FIND_DEVICE()	agp_find_device()
 #define DRM_ERR(v)		v
 
+#define DRM_MTRR_WC	MDF_WRITECOMBINE
+
 #define LOCK_TEST_WITH_RETURN(dev, filp)				\
 do {									\
 	if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ||		\
diff --git a/bsd/drm_os_netbsd.h b/bsd/drm_os_netbsd.h
index 7653b05e..1554d24d 100644
--- a/bsd/drm_os_netbsd.h
+++ b/bsd/drm_os_netbsd.h
@@ -136,6 +136,8 @@ extern const int DRM(M_DRM) = M_DEVBUF;
 #define DRM_WRITE8(map, offset, val)	bus_space_write_1( (map)->iot, (map)->ioh, (offset), (val) )
 #define DRM_WRITE32(map, offset, val)	bus_space_write_4( (map)->iot, (map)->ioh, (offset), (val) )
 
+#define DRM_MTRR_WC	MTRR_TYPE_WC
+
 #define DRM_AGP_FIND_DEVICE()	agp_find_device(0)
 
 #define LOCK_TEST_WITH_RETURN(dev, filp)				\