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| author | Tejun Heo | 2006-01-06 09:56:18 +0100 |
|---|---|---|
| committer | Jens Axboe | 2006-01-06 09:56:18 +0100 |
| commit | 9a3dccc42556537a48f39ee9a9e7ab90a933f766 (patch) | |
| tree | e67d7b314d4e0732bfa5558bef4f1941ea80cb58 /drivers/scsi/libata-core.c | |
| parent | [BLOCK] update libata to use new blk_ordered for barriers (diff) | |
| download | kernel-qcow2-linux-9a3dccc42556537a48f39ee9a9e7ab90a933f766.tar.gz kernel-qcow2-linux-9a3dccc42556537a48f39ee9a9e7ab90a933f766.tar.xz kernel-qcow2-linux-9a3dccc42556537a48f39ee9a9e7ab90a933f766.zip | |
[BLOCK] add FUA support to libata
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'drivers/scsi/libata-core.c')
| -rw-r--r-- | drivers/scsi/libata-core.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 9ea102587914..bdfb0a88cd6f 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -562,16 +562,28 @@ static const u8 ata_rw_cmds[] = { ATA_CMD_WRITE_MULTI, ATA_CMD_READ_MULTI_EXT, ATA_CMD_WRITE_MULTI_EXT, + 0, + 0, + 0, + ATA_CMD_WRITE_MULTI_FUA_EXT, /* pio */ ATA_CMD_PIO_READ, ATA_CMD_PIO_WRITE, ATA_CMD_PIO_READ_EXT, ATA_CMD_PIO_WRITE_EXT, + 0, + 0, + 0, + 0, /* dma */ ATA_CMD_READ, ATA_CMD_WRITE, ATA_CMD_READ_EXT, - ATA_CMD_WRITE_EXT + ATA_CMD_WRITE_EXT, + 0, + 0, + 0, + ATA_CMD_WRITE_FUA_EXT }; /** @@ -584,25 +596,32 @@ static const u8 ata_rw_cmds[] = { * LOCKING: * caller. */ -void ata_rwcmd_protocol(struct ata_queued_cmd *qc) +int ata_rwcmd_protocol(struct ata_queued_cmd *qc) { struct ata_taskfile *tf = &qc->tf; struct ata_device *dev = qc->dev; + u8 cmd; - int index, lba48, write; + int index, fua, lba48, write; + fua = (tf->flags & ATA_TFLAG_FUA) ? 4 : 0; lba48 = (tf->flags & ATA_TFLAG_LBA48) ? 2 : 0; write = (tf->flags & ATA_TFLAG_WRITE) ? 1 : 0; if (dev->flags & ATA_DFLAG_PIO) { tf->protocol = ATA_PROT_PIO; - index = dev->multi_count ? 0 : 4; + index = dev->multi_count ? 0 : 8; } else { tf->protocol = ATA_PROT_DMA; - index = 8; + index = 16; } - tf->command = ata_rw_cmds[index + lba48 + write]; + cmd = ata_rw_cmds[index + fua + lba48 + write]; + if (cmd) { + tf->command = cmd; + return 0; + } + return -1; } static const char * const xfer_mode_str[] = { |