diff options
Diffstat (limited to 'sys/arch/i386/include/bus.h')
| -rw-r--r-- | sys/arch/i386/include/bus.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/sys/arch/i386/include/bus.h b/sys/arch/i386/include/bus.h index 5c5caf3e6c7..c07289b953a 100644 --- a/sys/arch/i386/include/bus.h +++ b/sys/arch/i386/include/bus.h @@ -1,4 +1,4 @@ -/* $OpenBSD: bus.h,v 1.40 2007/02/20 21:15:01 tom Exp $ */ +/* $OpenBSD: bus.h,v 1.41 2007/08/22 21:28:41 marco Exp $ */ /* $NetBSD: bus.h,v 1.6 1996/11/10 03:19:25 thorpej Exp $ */ /*- @@ -731,6 +731,19 @@ void bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh, /* Compatibility defines */ #define BUS_BARRIER_READ BUS_SPACE_BARRIER_READ #define BUS_BARRIER_WRITE BUS_SPACE_BARRIER_WRITE +#define BUS_SPACE_MAP_CACHEABLE 0x0001 +#define BUS_SPACE_MAP_LINEAR 0x0002 +#define BUS_SPACE_MAP_PREFETCHABLE 0x0008 + +/* + * void *bus_space_vaddr(bus_space_tag_t, bus_space_handle_t); + * + * Get the kernel virtual address for the mapped bus space. + * Only allowed for regions mapped with BUS_SPACE_MAP_LINEAR. + * (XXX not enforced) + */ +#define bus_space_vaddr(t, h) \ + ((t) == I386_BUS_SPACE_IO ? (void *)(NULL) : (void *)(h)) /* * Flags used in various bus DMA methods. |