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Update probe flow so that devices with lbp can also disable disksort.

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Ensure that delete_available is reset so re-probes after a media change,
to one with different delete characteristics, will result in the correct
methods being flagged as available.

Make all ccb state changes use a consistent flow:
* free()
* xpt_release_ccb()
* softc->state = <new state>
* xpt_schedule()

Reviewed by:	mav
Approved by:	pjd (mentor)
MFC after:	1 week
This commit is contained in:
Steven Hartland 2013-05-02 14:14:57 +00:00
parent 4fb6bc364f
commit f68008595b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=250179
1 changed files with 34 additions and 31 deletions
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65
sys/cam/scsi/scsi_da.c
View File

@ -2392,7 +2392,7 @@ dastart(struct cam_periph *periph, union ccb *start_ccb)
if (!scsi_vpd_supported_page(periph, SVPD_BLOCK_LIMITS)) {
/* Not supported skip to next probe */
softc->state = DA_STATE_PROBE_ATA;
softc->state = DA_STATE_PROBE_BDC;
goto skipstate;
}
@ -2734,9 +2734,9 @@ dadone(struct cam_periph *periph, union ccb *done_ccb)
* with the short version of the command.
*/
if (maxsector == 0xffffffff) {
softc->state = DA_STATE_PROBE_RC16;
free(rdcap, M_SCSIDA);
xpt_release_ccb(done_ccb);
softc->state = DA_STATE_PROBE_RC16;
xpt_schedule(periph, priority);
return;
}
@ -2838,9 +2838,9 @@ dadone(struct cam_periph *periph, union ccb *done_ccb)
(error_code == SSD_CURRENT_ERROR) &&
(sense_key == SSD_KEY_ILLEGAL_REQUEST)))) {
softc->flags &= ~DA_FLAG_CAN_RC16;
softc->state = DA_STATE_PROBE_RC;
free(rdcap, M_SCSIDA);
xpt_release_ccb(done_ccb);
softc->state = DA_STATE_PROBE_RC;
xpt_schedule(periph, priority);
return;
} else
@ -2897,36 +2897,39 @@ dadone(struct cam_periph *periph, union ccb *done_ccb)
&softc->sysctl_task);
xpt_announce_periph(periph, announce_buf);
if (lbp) {
/*
* Based on older SBC-3 spec revisions
* any of the UNMAP methods "may" be
* available via LBP given this flag so
* we flag all of them as availble and
* then remove those which further
* probes confirm aren't available
* later.
*
* We could also check readcap(16) p_type
* flag to exclude one or more invalid
* write same (X) types here
*/
dadeleteflag(softc, DA_DELETE_WS16, 1);
dadeleteflag(softc, DA_DELETE_WS10, 1);
dadeleteflag(softc, DA_DELETE_ZERO, 1);
dadeleteflag(softc, DA_DELETE_UNMAP, 1);
softc->state = DA_STATE_PROBE_LBP;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
}
} else {
xpt_print(periph->path, "fatal error, "
"could not acquire reference count\n");
}
}
/* Ensure re-probe doesn't see old delete. */
softc->delete_available = 0;
if (lbp) {
/*
* Based on older SBC-3 spec revisions
* any of the UNMAP methods "may" be
* available via LBP given this flag so
* we flag all of them as availble and
* then remove those which further
* probes confirm aren't available
* later.
*
* We could also check readcap(16) p_type
* flag to exclude one or more invalid
* write same (X) types here
*/
dadeleteflag(softc, DA_DELETE_WS16, 1);
dadeleteflag(softc, DA_DELETE_WS10, 1);
dadeleteflag(softc, DA_DELETE_ZERO, 1);
dadeleteflag(softc, DA_DELETE_UNMAP, 1);
xpt_release_ccb(done_ccb);
softc->state = DA_STATE_PROBE_LBP;
xpt_schedule(periph, priority);
return;
}
xpt_release_ccb(done_ccb);
softc->state = DA_STATE_PROBE_BDC;
xpt_schedule(periph, priority);
@ -2954,8 +2957,8 @@ dadone(struct cam_periph *periph, union ccb *done_ccb)
if (lbp->flags & SVPD_LBP_UNMAP) {
free(lbp, M_SCSIDA);
softc->state = DA_STATE_PROBE_BLK_LIMITS;
xpt_release_ccb(done_ccb);
softc->state = DA_STATE_PROBE_BLK_LIMITS;
xpt_schedule(periph, priority);
return;
}
@ -2984,7 +2987,7 @@ dadone(struct cam_periph *periph, union ccb *done_ccb)
free(lbp, M_SCSIDA);
xpt_release_ccb(done_ccb);
softc->state = DA_STATE_PROBE_ATA;
softc->state = DA_STATE_PROBE_BDC;
xpt_schedule(periph, priority);
return;
}
@ -3047,7 +3050,7 @@ dadone(struct cam_periph *periph, union ccb *done_ccb)
free(block_limits, M_SCSIDA);
xpt_release_ccb(done_ccb);
softc->state = DA_STATE_PROBE_ATA;
softc->state = DA_STATE_PROBE_BDC;
xpt_schedule(periph, priority);
return;
}
@ -3084,8 +3087,8 @@ dadone(struct cam_periph *periph, union ccb *done_ccb)
}
free(bdc, M_SCSIDA);
softc->state = DA_STATE_PROBE_ATA;
xpt_release_ccb(done_ccb);
softc->state = DA_STATE_PROBE_ATA;
xpt_schedule(periph, priority);
return;
}