diff options
Diffstat (limited to 'sys/dev/ata/ata-all.h')
| -rw-r--r-- | sys/dev/ata/ata-all.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sys/dev/ata/ata-all.h b/sys/dev/ata/ata-all.h index 3f31e47..ee2bf2c 100644 --- a/sys/dev/ata/ata-all.h +++ b/sys/dev/ata/ata-all.h @@ -266,6 +266,20 @@ void ata_dmastart(struct ata_channel *, int, struct ata_dmaentry *, int); int ata_dmastatus(struct ata_channel *); int ata_dmadone(struct ata_channel *); +/* macros for locking a channel */ +#define ATA_LOCK_CH(ch, value)\ + atomic_cmpset_int(&(ch)->active, ATA_IDLE, (value)) + +#define ATA_SLEEPLOCK_CH(ch, value)\ + while (!atomic_cmpset_int(&(ch)->active, ATA_IDLE, (value)))\ + tsleep((caddr_t)&(ch), PRIBIO, "atalck", 1); + +#define ATA_FORCELOCK_CH(ch, value)\ + (ch)->active = value; + +#define ATA_UNLOCK_CH(ch)\ + (ch)->active = ATA_IDLE + /* macros to hide busspace uglyness */ #define ATA_INB(res, offset) \ bus_space_read_1(rman_get_bustag((res)), \ |
