diff options
| author | mav <mav@FreeBSD.org> | 2012-05-29 14:28:46 +0000 |
|---|---|---|
| committer | mav <mav@FreeBSD.org> | 2012-05-29 14:28:46 +0000 |
| commit | 1805c47af3282197f17b4a7a54117e7abbfca73d (patch) | |
| tree | 4ec8b5c9c9a23b122f2de0dcaccf4be11b4a7240 /sys/cam/ata/ata_xpt.c | |
| parent | ce59e84fbe903b8c54083cbe8ebece53d25e4c39 (diff) | |
| download | FreeBSD-src-1805c47af3282197f17b4a7a54117e7abbfca73d.zip FreeBSD-src-1805c47af3282197f17b4a7a54117e7abbfca73d.tar.gz | |
Allow to change number of openings (used tags) for ATA/SATA devices
via `camcontrol tags ... -N ...`. There is no need to tune it in
usual cases, but some users want to have it for debugging purposes.
MFC after: 2 weeks
Diffstat (limited to 'sys/cam/ata/ata_xpt.c')
| -rw-r--r-- | sys/cam/ata/ata_xpt.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/sys/cam/ata/ata_xpt.c b/sys/cam/ata/ata_xpt.c index ee2e409..3a25b69 100644 --- a/sys/cam/ata/ata_xpt.c +++ b/sys/cam/ata/ata_xpt.c @@ -65,6 +65,7 @@ struct ata_quirk_entry { struct scsi_inquiry_pattern inq_pat; u_int8_t quirks; #define CAM_QUIRK_MAXTAGS 0x01 + u_int mintags; u_int maxtags; }; @@ -153,7 +154,7 @@ static struct ata_quirk_entry ata_quirk_table[] = T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, /*vendor*/"*", /*product*/"*", /*revision*/"*" }, - /*quirks*/0, /*maxtags*/0 + /*quirks*/0, /*mintags*/0, /*maxtags*/0 }, }; @@ -1019,7 +1020,8 @@ noerror: path->device->flags |= CAM_DEV_IDENTIFY_DATA_VALID; } if (ident_buf->satacapabilities & ATA_SUPPORT_NCQ) { - path->device->mintags = path->device->maxtags = + path->device->mintags = 2; + path->device->maxtags = ATA_QUEUE_LEN(ident_buf->queue) + 1; } ata_find_quirk(path->device); @@ -1355,8 +1357,10 @@ ata_find_quirk(struct cam_ed *device) quirk = (struct ata_quirk_entry *)match; device->quirk = quirk; - if (quirk->quirks & CAM_QUIRK_MAXTAGS) - device->mintags = device->maxtags = quirk->maxtags; + if (quirk->quirks & CAM_QUIRK_MAXTAGS) { + device->mintags = quirk->mintags; + device->maxtags = quirk->maxtags; + } } typedef struct { |
