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
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parent
a86227d176
commit
7dc3213da1
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=236234
@ -65,6 +65,7 @@ struct ata_quirk_entry {
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struct scsi_inquiry_pattern inq_pat;
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u_int8_t quirks;
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#define CAM_QUIRK_MAXTAGS 0x01
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u_int mintags;
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u_int maxtags;
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};
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@ -153,7 +154,7 @@ static struct ata_quirk_entry ata_quirk_table[] =
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T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
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/*vendor*/"*", /*product*/"*", /*revision*/"*"
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},
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/*quirks*/0, /*maxtags*/0
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/*quirks*/0, /*mintags*/0, /*maxtags*/0
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},
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};
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@ -1019,7 +1020,8 @@ device_fail: if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0)
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path->device->flags |= CAM_DEV_IDENTIFY_DATA_VALID;
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}
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if (ident_buf->satacapabilities & ATA_SUPPORT_NCQ) {
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path->device->mintags = path->device->maxtags =
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path->device->mintags = 2;
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path->device->maxtags =
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ATA_QUEUE_LEN(ident_buf->queue) + 1;
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}
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ata_find_quirk(path->device);
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@ -1355,8 +1357,10 @@ ata_find_quirk(struct cam_ed *device)
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quirk = (struct ata_quirk_entry *)match;
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device->quirk = quirk;
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if (quirk->quirks & CAM_QUIRK_MAXTAGS)
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device->mintags = device->maxtags = quirk->maxtags;
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if (quirk->quirks & CAM_QUIRK_MAXTAGS) {
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device->mintags = quirk->mintags;
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device->maxtags = quirk->maxtags;
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}
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}
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typedef struct {
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@ -2905,17 +2905,13 @@ xpt_action_default(union ccb *start_ccb)
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if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) {
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if (INQ_DATA_TQ_ENABLED(&dev->inq_data)) {
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/* Don't ever go below one opening */
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if (crs->openings > 0) {
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xpt_dev_ccbq_resize(path,
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crs->openings);
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if (bootverbose) {
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xpt_print(path,
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"tagged openings now %d\n",
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crs->openings);
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}
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/* Don't ever go below one opening */
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if (crs->openings > 0) {
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xpt_dev_ccbq_resize(path, crs->openings);
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if (bootverbose) {
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xpt_print(path,
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"number of openings is now %d\n",
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crs->openings);
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}
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}
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}
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