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| author | Jens Axboe <jens.axboe@oracle.com> | 2008-10-22 09:34:49 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-23 16:05:26 -0700 |
| commit | 2fca5ccf97d2c28bcfce44f5b07d85e74e3cd18e (patch) | |
| tree | 483dedd08d6ccbb56959eeb127e82ab8f84edf2e /drivers/ata/libata-scsi.c | |
| parent | 332edc2f7fa58b818dfed1cede60272eecc27c0a (diff) | |
| download | blackbird-op-linux-2fca5ccf97d2c28bcfce44f5b07d85e74e3cd18e.tar.gz blackbird-op-linux-2fca5ccf97d2c28bcfce44f5b07d85e74e3cd18e.zip | |
libata: switch to using block layer tagging support
libata currently has a pretty dumb ATA_MAX_QUEUE loop for finding
a free tag to use. Instead of fixing that up, convert libata to
using block layer tagging - gets rid of code in libata, and is also
much faster.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/ata/libata-scsi.c')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 5d312dc9be9f..d5b9b7266c8b 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -708,7 +708,7 @@ static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, { struct ata_queued_cmd *qc; - qc = ata_qc_new_init(dev); + qc = ata_qc_new_init(dev, cmd->request->tag); if (qc) { qc->scsicmd = cmd; qc->scsidone = done; @@ -1103,7 +1103,8 @@ static int ata_scsi_dev_config(struct scsi_device *sdev, depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); depth = min(ATA_MAX_QUEUE - 1, depth); - scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, depth); + scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); + scsi_activate_tcq(sdev, depth); } return 0; @@ -1943,6 +1944,11 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) hdr[1] |= (1 << 7); memcpy(rbuf, hdr, sizeof(hdr)); + + /* if ncq, set tags supported */ + if (ata_id_has_ncq(args->id)) + rbuf[7] |= (1 << 1); + memcpy(&rbuf[8], "ATA ", 8); ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); |
