diff options
| author | Owain Ainsworth <oga@cvs.openbsd.org> | 2009-04-20 00:42:07 +0000 |
|---|---|---|
| committer | Owain Ainsworth <oga@cvs.openbsd.org> | 2009-04-20 00:42:07 +0000 |
| commit | b5396dca6504168d952b238075ba34f507a94e0b (patch) | |
| tree | 39015d7d9f61a69ff36284c190932f40b1bc8834 /sys/arch/alpha/include | |
| parent | 7720807a1d9f91f5c0f47d6b1be219d913aef6ac (diff) | |
Add a BUS_DMA_ZERO flag for bus_dmamem_alloc() to return zeroed memory.
Saves every damned driver calling bzero(), and continues the M_ZERO,
PR_ZERO symmetry.
Diffstat (limited to 'sys/arch/alpha/include')
| -rw-r--r-- | sys/arch/alpha/include/bus.h | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/sys/arch/alpha/include/bus.h b/sys/arch/alpha/include/bus.h index 64d22ea286d..5b9f4431b90 100644 --- a/sys/arch/alpha/include/bus.h +++ b/sys/arch/alpha/include/bus.h @@ -1,4 +1,4 @@ -/* $OpenBSD: bus.h,v 1.25 2009/02/01 14:33:58 miod Exp $ */ +/* $OpenBSD: bus.h,v 1.26 2009/04/20 00:42:05 oga Exp $ */ /* $NetBSD: bus.h,v 1.10 1996/12/02 22:19:32 cgd Exp $ */ /* @@ -428,17 +428,18 @@ struct alpha_bus_space { /* * Flags used in various bus DMA methods. */ -#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_24BIT 0x080 /* isadma map */ -#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 */ +#define BUS_DMA_WAITOK 0x0000 /* safe to sleep (pseudo-flag) */ +#define BUS_DMA_NOWAIT 0x0001 /* not safe to sleep */ +#define BUS_DMA_ALLOCNOW 0x0002 /* perform resource allocation now */ +#define BUS_DMA_COHERENT 0x0004 /* hint: map memory DMA coherent */ +#define BUS_DMA_BUS1 0x0010 /* placeholders for bus functions... */ +#define BUS_DMA_BUS2 0x0020 +#define BUS_DMA_BUS3 0x0040 +#define BUS_DMA_24BIT 0x0080 /* isadma map */ +#define BUS_DMA_STREAMING 0x0100 /* hint: sequential, unidirectional */ +#define BUS_DMA_READ 0x0200 /* mapping is device -> memory only */ +#define BUS_DMA_WRITE 0x0400 /* mapping is memory -> device only */ +#define BUS_DMA_ZERO 0x1000 /* zero memory in dmamem_alloc */ /* * Private flags stored in the DMA map. |