Clean up BUS_DMA_* flags, and make sure all arch's define:

BUS_DMA_READ, BUS_DMA_WRITE, and BUS_DMA_STREAMING

1 files changed, 12 insertions, 9 deletions

diff --git a/sys/arch/alpha/include/bus.h b/sys/arch/alpha/include/bus.h
index 0f7d4a1c183..3fd5bdc6724 100644
--- a/sys/arch/alpha/include/bus.h
+++ b/sys/arch/alpha/include/bus.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bus.h,v 1.15 2001/11/05 17:25:57 art Exp $	*/
+/*	$OpenBSD: bus.h,v 1.16 2002/03/07 18:08:08 jason Exp $	*/
 /*	$NetBSD: bus.h,v 1.10 1996/12/02 22:19:32 cgd Exp $	*/
 
 /*
@@ -408,14 +408,17 @@ struct alpha_bus_space {
 /*
  * Flags used in various bus DMA methods.
  */
-#define	BUS_DMA_WAITOK		0x00	/* safe to sleep (pseudo-flag) */
-#define	BUS_DMA_NOWAIT		0x01	/* not safe to sleep */
-#define	BUS_DMA_ALLOCNOW	0x02	/* perform resource allocation now */
-#define	BUS_DMA_COHERENT	0x04	/* hint: map memory DMA coherent */
-#define	BUS_DMA_BUS1		0x10	/* placeholders for bus functions... */
-#define	BUS_DMA_BUS2		0x20
-#define	BUS_DMA_BUS3		0x40
-#define	BUS_DMA_BUS4		0x80
+#define	BUS_DMA_WAITOK		0x000	/* safe to sleep (pseudo-flag) */
+#define	BUS_DMA_NOWAIT		0x001	/* not safe to sleep */
+#define	BUS_DMA_ALLOCNOW	0x002	/* perform resource allocation now */
+#define	BUS_DMA_COHERENT	0x004	/* hint: map memory DMA coherent */
+#define	BUS_DMA_BUS1		0x010	/* placeholders for bus functions... */
+#define	BUS_DMA_BUS2		0x020
+#define	BUS_DMA_BUS3		0x040
+#define	BUS_DMA_BUS4		0x080
+#define	BUS_DMA_STREAMING	0x100	/* hint: sequential, unidirectional */
+#define	BUS_DMA_READ		0x200	/* mapping is device -> memory only */
+#define	BUS_DMA_WRITE		0x400	/* mapping is memory -> device only */
 
 /*
  * Private flags stored in the DMA map.