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[PATCH] libata irq-pio: add read/write multiple support

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- add is_multi_taskfile() to ata.h
   - initialize ata_device->multi_count with device identify data
   - use ata_pio_sectors() to support r/w multiple commands

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>

========
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Albert Lee
2005-11-01 19:33:20 +08:00
committed by Jeff Garzik
parent fbcdd80b0d
commit 07f6f7d074
2 changed files with 46 additions and 6 deletions
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8
include/linux/ata.h
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@@ -293,6 +293,14 @@ static inline int is_atapi_taskfile(const struct ata_taskfile *tf)
(tf->protocol == ATA_PROT_ATAPI_DMA);
}
static inline int is_multi_taskfile(struct ata_taskfile *tf)
{
return (tf->command == ATA_CMD_READ_MULTI) ||
(tf->command == ATA_CMD_WRITE_MULTI) ||
(tf->command == ATA_CMD_READ_MULTI_EXT) ||
(tf->command == ATA_CMD_WRITE_MULTI_EXT);
}
static inline int ata_ok(u8 status)
{
return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))