diff options
Diffstat (limited to 'sys/i386/include/bus_at386.h')
| -rw-r--r-- | sys/i386/include/bus_at386.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/sys/i386/include/bus_at386.h b/sys/i386/include/bus_at386.h index 2d84400..3423e6b 100644 --- a/sys/i386/include/bus_at386.h +++ b/sys/i386/include/bus_at386.h @@ -1154,6 +1154,29 @@ bus_space_barrier(bus_space_tag_t tag, bus_space_handle_t bsh, /* + * Generic memory barrier functions. + */ +static __inline void +barrier_read(void) +{ + bus_space_barrier(I386_BUS_SPACE_MEM, 0, 0, ~0, BUS_SPACE_BARRIER_READ); +} + +static __inline void +barrier_write(void) +{ + bus_space_barrier(I386_BUS_SPACE_MEM, 0, 0, ~0, + BUS_SPACE_BARRIER_WRITE); +} + +static __inline void +barrier_rw(void) +{ + bus_space_barrier(I386_BUS_SPACE_MEM, 0, 0, ~0, + BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); +} + +/* * Flags used in various bus DMA methods. */ #define BUS_DMA_WAITOK 0x00 /* safe to sleep (pseudo-flag) */ |
