219 scsi_low_activate_qtag(cb)  in scsi_low_activate_qtag()  argument
220 	struct slccb *cb;  in scsi_low_activate_qtag()
222 	struct lun_info *li = cb->li;
224 	if (cb->ccb_tag != SCSI_LOW_UNKTAG)
228 	cb->ccb_tag = cb->ccb_otag;
232 scsi_low_deactivate_qtag(cb)  in scsi_low_deactivate_qtag()  argument
233 	struct slccb *cb;  in scsi_low_deactivate_qtag()
235 	struct lun_info *li = cb->li;
237 	if (cb->ccb_tag == SCSI_LOW_UNKTAG)
241 	cb->ccb_tag = SCSI_LOW_UNKTAG;
245 scsi_low_ccb_message_exec(slp, cb)  in scsi_low_ccb_message_exec()  argument
247 	struct slccb *cb;
250 	scsi_low_assert_msg(slp, cb->ti, cb->ccb_msgoutflag, 0);
251 	cb->ccb_msgoutflag = 0;
255 scsi_low_ccb_message_assert(cb, msg)  in scsi_low_ccb_message_assert()  argument
256 	struct slccb *cb;  in scsi_low_ccb_message_assert()
260 	cb->ccb_msgoutflag = cb->ccb_omsgoutflag = msg;
264 scsi_low_ccb_message_retry(cb)  in scsi_low_ccb_message_retry()  argument
265 	struct slccb *cb;  in scsi_low_ccb_message_retry()
267 	cb->ccb_msgoutflag = cb->ccb_omsgoutflag;
271 scsi_low_ccb_message_clear(cb)  in scsi_low_ccb_message_clear()  argument
272 	struct slccb *cb;  in scsi_low_ccb_message_clear()
274 	cb->ccb_msgoutflag = 0;
321 	struct slccb *cb;  local
328 	if ((cb = slp->sl_Qnexus) != NULL && cb->osdep == osdep)
329 		return cb;
331 	TAILQ_FOREACH(cb, &slp->sl_start, ccb_chain)
333 		if (cb->osdep == osdep)
334 			return cb;
337 	TAILQ_FOREACH(cb, &li->li_discq, ccb_chain)
339 		if (cb->osdep == osdep)
340 			return cb;
346 scsi_low_translate_error_code(cb, tp)  in scsi_low_translate_error_code()  argument
347 	struct slccb *cb;  in scsi_low_translate_error_code()
351 	if (cb->ccb_error == 0)
354 	for (tp ++; (cb->ccb_error & tp->error_bits) == 0; tp ++)
422 	struct slccb *cb;  local
451 		if (((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)) {
458 		cb->osdep = ccb;
459 		cb->bp = NULL;
472 		scsi_low_enqueue(slp, ti, li, cb, flags, 0);
502 		cb = scsi_low_find_ccb(slp, target, lun, ccb->cab.abort_ccb);
503 		rv = scsi_low_abort_ccb(slp, cb);
680 		if (((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL))
690 		cb->osdep = ccb;
691 		cb->bp = NULL;
698 		scsi_low_enqueue(slp, ti, li, cb, flags, msg);
803 scsi_low_ccb_setup_cam(slp, cb)  in scsi_low_ccb_setup_cam()  argument
805 	struct slccb *cb;
807         union ccb *ccb = (union ccb *) cb->osdep;
809 	if ((cb->ccb_flags & CCB_SCSIIO) != 0)
811 		cb->ccb_scp.scp_cmd = ccb->csio.cdb_io.cdb_bytes;
812 		cb->ccb_scp.scp_cmdlen = (int) ccb->csio.cdb_len;
813 		cb->ccb_scp.scp_data = ccb->csio.data_ptr;
814 		cb->ccb_scp.scp_datalen = (int) ccb->csio.dxfer_len;
816 			cb->ccb_scp.scp_direction = SCSI_LOW_WRITE;
818 			cb->ccb_scp.scp_direction = SCSI_LOW_READ;
819 		cb->ccb_tcmax = ccb->ccb_h.timeout / 1000;
823 		scsi_low_unit_ready_cmd(cb);
829 scsi_low_done_cam(slp, cb)  in scsi_low_done_cam()  argument
831 	struct slccb *cb;
835 	ccb = (union ccb *) cb->osdep;
836 	if (cb->ccb_error == 0)
843 	        if (cb->ccb_rcnt >= slp->sl_max_retry)
844 			cb->ccb_error |= ABORTIO;
846 		if ((cb->ccb_flags & CCB_NORETRY) == 0 &&
847 		    (cb->ccb_error & ABORTIO) == 0)
850 		if ((cb->ccb_error & SENSEIO) != 0)
853 			       &cb->ccb_sense,
857 		ccb->ccb_h.status = scsi_low_translate_error_code(cb,
861 		if ((cb->ccb_flags & CCB_SILENT) == 0 &&
862 		    cb->ccb_scp.scp_cmdlen > 0 &&
863 		    (scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
876 	if (cb->ccb_scp.scp_status == ST_UNKNOWN)
879 		ccb->csio.scsi_status = cb->ccb_scp.scp_status;
881 	if ((cb->ccb_flags & CCB_NOSDONE) == 0)
1213 	struct slccb *cb = NULL;		/* XXX */  local
1222 		cb = TAILQ_FIRST(&slp->sl_start);
1223 		if (cb == NULL)
1226 		if (cb->ccb_selrcnt >= SCSI_LOW_MAX_SELECTION_RETRY)
1228 			cb->ccb_flags |= CCB_NORETRY;
1229 			cb->ccb_error |= SELTIMEOUTIO;
1230 			if (scsi_low_revoke_ccb(slp, cb, 1) != NULL)
1253 		if ((cb = slp->sl_Qnexus) != NULL)
1255 			cb->ccb_tc -= SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
1256 			if (cb->ccb_tc < 0)
1261 		        if ((cb = TAILQ_FIRST(&slp->sl_start)) == NULL)
1264 			cb->ccb_tc -= SCSI_LOW_TIMEOUT_CHECK_INTERVAL;
1265 			if (cb->ccb_tc < 0)
1277 				for (cb = TAILQ_FIRST(&li->li_discq); 
1278 				     cb != NULL;
1279 				     cb = TAILQ_NEXT(cb, ccb_chain))
1281 					cb->ccb_tc -=
1283 					if (cb->ccb_tc < 0)
1314 	cb->ccb_error |= TIMEOUTIO;
1315 	device_printf(slp->sl_dev, "slccb (0x%lx) timeout!\n", (u_long) cb);
1324 scsi_low_abort_ccb(slp, cb)  in scsi_low_abort_ccb()  argument
1326 	struct slccb *cb;
1332 	if (cb == NULL)
1334 	if ((cb->ccb_omsgoutflag & 
1338 	ti = cb->ti;
1339 	li = cb->li;
1340 	if (cb->ccb_tag == SCSI_LOW_UNKTAG)
1345 	cb->ccb_error |= ABORTIO;
1346 	cb->ccb_flags |= CCB_NORETRY;
1347 	scsi_low_ccb_message_assert(cb, msg);
1349 	if (cb == slp->sl_Qnexus)
1353 	else if ((cb->ccb_flags & CCB_DISCQ) != 0)
1355 		if (scsi_low_revoke_ccb(slp, cb, 0) == NULL)
1359 		cb->ccb_flags |= CCB_STARTQ;
1360 		TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
1367 		if (scsi_low_revoke_ccb(slp, cb, 1) != NULL)
1498 scsi_low_enqueue(slp, ti, li, cb, flags, msg)  in scsi_low_enqueue()  argument
1502 	struct slccb *cb;
1506 	cb->ti = ti;
1507 	cb->li = li;
1509 	scsi_low_ccb_message_assert(cb, msg);
1511 	cb->ccb_otag = cb->ccb_tag = SCSI_LOW_UNKTAG;
1512 	scsi_low_alloc_qtag(cb);
1514 	cb->ccb_flags = flags | CCB_STARTQ;
1515 	cb->ccb_tc = cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
1516 	cb->ccb_error |= PENDINGIO;
1520 		TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
1524 		TAILQ_INSERT_TAIL(&slp->sl_start, cb, ccb_chain);
1541 	struct slccb *cb;  local
1548 	if ((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)
1551 	cb->osdep = NULL;
1552 	cb->bp = NULL;
1553 	scsi_low_enqueue(slp, ti, li, cb, flags, tmsgflags);
1572 scsi_low_unit_ready_cmd(cb)  in scsi_low_unit_ready_cmd()  argument
1573 	struct slccb *cb;  in scsi_low_unit_ready_cmd()
1576 	cb->ccb_scp.scp_cmd = unit_ready_cmd;
1577 	cb->ccb_scp.scp_cmdlen = sizeof(unit_ready_cmd);
1578 	cb->ccb_scp.scp_datalen = 0;
1579 	cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1580 	cb->ccb_tcmax = 15;
1584 scsi_low_sense_abort_start(slp, ti, li, cb)  in scsi_low_sense_abort_start()  argument
1588 	struct slccb *cb;
1591 	cb->ccb_scp.scp_cmdlen = 6;
1592 	bzero(cb->ccb_scsi_cmd, cb->ccb_scp.scp_cmdlen);
1593 	cb->ccb_scsi_cmd[0] = REQUEST_SENSE;
1594 	cb->ccb_scsi_cmd[4] = sizeof(cb->ccb_sense);
1595 	cb->ccb_scp.scp_cmd = cb->ccb_scsi_cmd;
1596 	cb->ccb_scp.scp_data = (u_int8_t *) &cb->ccb_sense;
1597 	cb->ccb_scp.scp_datalen = sizeof(cb->ccb_sense);
1598 	cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1599 	cb->ccb_tcmax = 15;
1600 	scsi_low_ccb_message_clear(cb);
1601 	if ((cb->ccb_flags & CCB_CLEARQ) != 0)
1607 		bzero(&cb->ccb_sense, sizeof(cb->ccb_sense));
1617 scsi_low_setup_start(slp, ti, li, cb)  in scsi_low_setup_start()  argument
1621 	struct slccb *cb;
1627 		scsi_low_unit_ready_cmd(cb);
1631 		cb->ccb_scp.scp_cmd = ss_cmd;
1632 		cb->ccb_scp.scp_cmdlen = sizeof(ss_cmd);
1633 		cb->ccb_scp.scp_datalen = 0;
1634 		cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1635 		cb->ccb_tcmax = 30;
1639 		cb->ccb_scp.scp_cmd = inq_cmd;
1640 		cb->ccb_scp.scp_cmdlen = sizeof(inq_cmd);
1641 		cb->ccb_scp.scp_data = (u_int8_t *)&li->li_inq;
1642 		cb->ccb_scp.scp_datalen = sizeof(li->li_inq);
1643 		cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1644 		cb->ccb_tcmax = 15;
1648 		cb->ccb_scp.scp_cmd = sms_cmd;
1649 		cb->ccb_scp.scp_cmdlen = sizeof(sms_cmd);
1650 		cb->ccb_scp.scp_data = (u_int8_t *)&li->li_sms;
1651 		cb->ccb_scp.scp_datalen = sizeof(li->li_sms);
1652 		cb->ccb_scp.scp_direction = SCSI_LOW_READ;
1653 		cb->ccb_tcmax = 15;
1689 	struct slccb *cb;  local
1716 	for (cb = TAILQ_FIRST(&slp->sl_start); cb != NULL;
1717 	     cb = TAILQ_NEXT(cb, ccb_chain))
1719 		li = cb->li;
1728 		            (cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
1735 	cb->ccb_flags &= ~CCB_STARTQ;
1736 	TAILQ_REMOVE(&slp->sl_start, cb, ccb_chain);
1737 	ti = cb->ti;
1740 	cb->ccb_error = 0;
1741 	cb->ccb_datalen = -1;
1742 	cb->ccb_scp.scp_status = ST_UNKNOWN;
1745 	slp->sl_Qnexus = cb;
1753 	if ((cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
1756 		rv = scsi_low_sense_abort_start(slp, ti, li, cb);
1760 		cb->ccb_flags &= ~CCB_INTERNAL;
1761 		rv = scsi_low_ccb_setup_cam(slp, cb);
1762 		if (cb->ccb_msgoutflag != 0)
1764 			scsi_low_ccb_message_exec(slp, cb);
1769 		cb->ccb_flags |= CCB_INTERNAL;
1770 		rv = scsi_low_setup_start(slp, ti, li, cb);
1782 		scsi_low_activate_qtag(cb);
1783 		if ((scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
1786 		else if ((cb->ccb_flags & CCB_URGENT) != 0)
1794 	if (cb->ccb_tcmax < SCSI_LOW_MIN_TOUT)
1795 		cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
1796 	cb->ccb_tc = cb->ccb_tcmax;
1799 	cb->ccb_sscp = cb->ccb_scp;
1802 	slp->sl_scp = cb->ccb_sscp;
1803 	slp->sl_error = cb->ccb_error;
1815 	slp->sl_selid = cb;
1816 	rv = ((*slp->sl_funcs->scsi_low_start_bus) (slp, cb));
1825 	scsi_low_arbit_fail(slp, cb);
1832 scsi_low_arbit_fail(slp, cb)  in scsi_low_arbit_fail()  argument
1834 	struct slccb *cb;
1836 	struct targ_info *ti = cb->ti;
1838 	scsi_low_deactivate_qtag(cb);
1839 	scsi_low_ccb_message_retry(cb);
1840 	cb->ccb_flags |= CCB_STARTQ;
1841 	TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
1845 	cb->ccb_selrcnt ++;
1886 scsi_low_setup_done(slp, cb)  in scsi_low_setup_done()  argument
1888 	struct slccb *cb;
1893 	ti = cb->ti;
1894 	li = cb->li;
1896 	if (cb->ccb_rcnt >= slp->sl_max_retry)
1898 		cb->ccb_error |= ABORTIO;
1904 	    (cb->ccb_error & SELTIMEOUTIO) != 0)
1906 		cb->ccb_error |= ABORTIO;
1913 		if (cb->ccb_error != 0)
1953 		if (cb->ccb_error != 0)
1955 			if (cb->ccb_error & SENSEIO)
1962 					scsi_extract_sense(&cb->ccb_sense,
2007 	cb->ccb_rcnt --;
2012 scsi_low_done(slp, cb)  in scsi_low_done()  argument
2014 	struct slccb *cb;
2018 	if (cb->ccb_error == 0)
2020 		if ((cb->ccb_flags & (CCB_SENSE | CCB_CLEARQ)) != 0)
2032 			if ((cb->ccb_flags & CCB_CLEARQ) == 0)
2034 				cb->ccb_rcnt --;
2035 				cb->ccb_flags |= CCB_CLEARQ;
2040 			if ((cb->ccb_flags & CCB_SENSE) != 0)
2041 				cb->ccb_error |= (SENSEIO | ABORTIO);
2042 			cb->ccb_flags &= ~(CCB_SENSE | CCB_CLEARQ);
2044 		else switch (cb->ccb_sscp.scp_status)
2050 			if (cb->ccb_datalen == 0 ||
2051 			    cb->ccb_scp.scp_datalen == 0)
2054 			if (cb->ccb_scp.scp_cmdlen > 0 &&
2055 			    (scsi_low_cmd_flags[cb->ccb_scp.scp_cmd[0]] &
2059 			cb->ccb_error |= PDMAERR;
2064 			cb->ccb_error |= (BUSYERR | STATERR);
2068 			cb->ccb_error |= (STATERR | ABORTIO);
2073 			if (cb->ccb_flags & (CCB_AUTOSENSE | CCB_INTERNAL))
2075 				cb->ccb_rcnt --;
2076 				cb->ccb_flags |= CCB_SENSE;
2079 			cb->ccb_error |= (UACAERR | STATERR | ABORTIO);
2084 			cb->ccb_error |= FATALIO;
2090 		if (cb->ccb_flags & CCB_SENSE)
2092 			cb->ccb_error |= (SENSEERR | ABORTIO);
2094 		cb->ccb_flags &= ~(CCB_CLEARQ | CCB_SENSE);
2098 	if ((cb->ccb_flags & CCB_INTERNAL) != 0)
2100 		if (scsi_low_setup_done(slp, cb) == SCSI_LOW_DONE_RETRY)
2105 	if (cb->ccb_omsgoutflag != 0)
2112 		if ((cb->ccb_omsgoutflag & SCSI_LOW_MSG_ABORT_OK) != 0)
2114 			cb->ccb_error |= ABORTIO;
2119 	if (cb->osdep != NULL)
2121 		rv = scsi_low_done_cam(slp, cb);
2125 	else if (cb->ccb_error != 0)
2127 	        if (cb->ccb_rcnt >= slp->sl_max_retry)
2128 			cb->ccb_error |= ABORTIO;
2130 		if ((cb->ccb_flags & CCB_NORETRY) == 0 &&
2131 		    (cb->ccb_error & ABORTIO) == 0)
2137 	if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DONE, cb->ti->ti_id) != 0)
2144 	scsi_low_deactivate_qtag(cb);
2145 	scsi_low_dealloc_qtag(cb);
2146 	scsi_low_free_ccb(cb);
2152 	if (SCSI_LOW_DEBUG_GO(SCSI_LOW_DEBUG_DONE, cb->ti->ti_id) != 0)
2159 	cb->ccb_rcnt ++;
2160 	scsi_low_deactivate_qtag(cb);
2161 	scsi_low_ccb_message_retry(cb);
2224 	struct slccb *cb, *topcb;  local
2226 	if ((cb = slp->sl_Qnexus) != NULL)
2228 		topcb = scsi_low_revoke_ccb(slp, cb, fdone);
2314 	struct slccb *cb;  local
2319 	cb = TAILQ_FIRST(&li->li_discq);
2320 	for ( ; cb != NULL; cb = TAILQ_NEXT(cb, ccb_chain))
2321 		if (cb->ccb_tag == tag)
2323 	return cb;
2333 		    (u_long) cb);
2334 		cb->ccb_flags |= (CCB_NORETRY | CCB_SILENT);
2335 		scsi_low_revoke_ccb(slp, cb, 1);
2341 		if (cb->ccb_omsgoutflag == 0)
2342 			scsi_low_ccb_message_assert(cb, SCSI_LOW_MSG_NOOP);
2346 	TAILQ_REMOVE(&li->li_discq, cb, ccb_chain);
2347 	cb->ccb_flags &= ~CCB_DISCQ;
2348 	slp->sl_Qnexus = cb;
2350 	slp->sl_scp = cb->ccb_sscp;
2351 	slp->sl_error |= cb->ccb_error;
2361 	if (cb->ccb_msgoutflag != 0)
2363 		scsi_low_ccb_message_exec(slp, cb);
2366 	return cb;
2375 	struct slccb *cb;  local
2382 	if ((cb = slp->sl_selid) != NULL)
2384 		scsi_low_arbit_fail(slp, cb);
2449 	struct slccb *cb = slp->sl_Qnexus;  local
2452 	if (cb == NULL)
2471 			scsi_low_test_cmdlnk(slp, cb);
2488 	struct slccb *cb = slp->sl_Qnexus;  local
2490 	if (cb != NULL && direction == cb->ccb_sscp.scp_direction)
2492 		*bp = cb->bp;
2504 		if (cb == NULL)
2673 	struct slccb *cb = slp->sl_Qnexus;  local
2678 	if (cb == NULL)
2686 		if (scsi_low_is_disconnect_ok(cb) != 0)
2694 			if (cb->ccb_tag == SCSI_LOW_UNKTAG)
2736 	struct slccb *cb = slp->sl_Qnexus;  local
2739 	if (cb == NULL || cb->ccb_tag == SCSI_LOW_UNKTAG)
2746 		ti->ti_msgoutstr[ptr + 1] = (u_int8_t) cb->ccb_tag;
2999 	struct slccb *ncb, *cb;  local
3003 	if ((cb = slp->sl_Qnexus) == NULL)
3006 	cb->ccb_sscp.scp_status = slp->sl_scp.scp_status;
3022 	cb->ccb_error |= slp->sl_error;
3023 	if (cb->ccb_error != 0)
3044 	ncb->ccb_tag = cb->ccb_tag;
3045 	ncb->ccb_otag = cb->ccb_otag;
3046 	cb->ccb_tag = SCSI_LOW_UNKTAG;
3047 	cb->ccb_otag = SCSI_LOW_UNKTAG;
3048 	if (scsi_low_done(slp, cb) == SCSI_LOW_DONE_RETRY)
3093 	struct slccb *cb = slp->sl_Qnexus;  local
3095 	if (cb != NULL)
3097 		cb->ccb_sscp.scp_datalen = slp->sl_scp.scp_datalen;
3098 		cb->ccb_sscp.scp_data = slp->sl_scp.scp_data;
3173 		struct slccb *cb = slp->sl_Qnexus;  local
3175 		if (cb != NULL && (cb->ccb_flags & CCB_SENSE) != 0)
3224 		struct slccb *cb = slp->sl_Qnexus;  local
3226 		if (cb != NULL && (cb->ccb_flags & CCB_SENSE) != 0)
3271 	struct slccb *cb = slp->sl_Qnexus;  local
3274 	if (cb == NULL || res <= 0 ||
3279 	if (slp->sl_scp.scp_datalen + res > cb->ccb_scp.scp_datalen)
3292 	struct slccb *cb = slp->sl_Qnexus;  local
3307 		if (cb == NULL)
3313 		   slp->sl_scp.scp_datalen - count > cb->ccb_scp.scp_datalen)
3548 	struct slccb *cb = slp->sl_Qnexus;  local
3571 		if (cb != NULL)
3575 			li = cb->li;
3576 			TAILQ_INSERT_TAIL(&li->li_discq, cb, ccb_chain);
3577 			cb->ccb_flags |= CCB_DISCQ;
3578 			cb->ccb_error |= slp->sl_error;
3608 		if (cb == NULL)
3614 			if (cb->ccb_omsgoutflag == SCSI_LOW_MSG_NOOP &&
3615 			    (cb->ccb_msgoutflag != 0 ||
3623 		cb->ccb_error |= slp->sl_error;
3624 		if (scsi_low_done(slp, cb) == SCSI_LOW_DONE_RETRY)
3626 			cb->ccb_flags |= CCB_STARTQ;
3627 			TAILQ_INSERT_HEAD(&slp->sl_start, cb, ccb_chain);
3641 scsi_low_alloc_qtag(cb)  in scsi_low_alloc_qtag()  argument
3642 	struct slccb *cb;  in scsi_low_alloc_qtag()
3644 	struct lun_info *li = cb->li;
3647 	if (cb->ccb_otag != SCSI_LOW_UNKTAG)
3656 	cb->ccb_otag = etag;
3672 	cb->ccb_otag = (li->li_qd ++);
3678 scsi_low_dealloc_qtag(cb)  in scsi_low_dealloc_qtag()  argument
3679 	struct slccb *cb;  in scsi_low_dealloc_qtag()
3681 	struct lun_info *li = cb->li;
3684 	if (cb->ccb_otag == SCSI_LOW_UNKTAG)
3688 	etag = cb->ccb_otag - 1;
3696 	etag = cb->ccb_otag;
3704 	cb->ccb_otag = SCSI_LOW_UNKTAG;
3709 scsi_low_revoke_ccb(slp, cb, fdone)  in scsi_low_revoke_ccb()  argument
3711 	struct slccb *cb;
3714 	struct targ_info *ti = cb->ti;
3715 	struct lun_info *li = cb->li;
3718 	if ((cb->ccb_flags & (CCB_STARTQ | CCB_DISCQ)) == 
3726 	if ((cb->ccb_flags & CCB_STARTQ) != 0)
3728 		TAILQ_REMOVE(&slp->sl_start, cb, ccb_chain);
3731 	if ((cb->ccb_flags & CCB_DISCQ) != 0)
3733 		TAILQ_REMOVE(&li->li_discq, cb, ccb_chain);
3739 	cb->ccb_flags &= ~(CCB_STARTQ | CCB_DISCQ | 
3743 	    (cb->ccb_rcnt ++ >= slp->sl_max_retry || 
3744 	     (cb->ccb_flags & CCB_NORETRY) != 0))
3746 		cb->ccb_error |= FATALIO;
3747 		cb->ccb_flags &= ~CCB_AUTOSENSE;
3748 		if (scsi_low_done(slp, cb) != SCSI_LOW_DONE_COMPLETE)
3755 		cb->ccb_error |= PENDINGIO;
3756 		scsi_low_deactivate_qtag(cb);
3757 		scsi_low_ccb_message_retry(cb);
3758 		cb->ccb_tc = cb->ccb_tcmax = SCSI_LOW_MIN_TOUT;
3759 		return cb;
3769 	struct slccb *cb, *ncb, *ecb;  local
3775 	for (cb = TAILQ_FIRST(&li->li_discq); cb != NULL; cb = ncb)
3777 		ncb = TAILQ_NEXT(cb, ccb_chain);
3778 		cb = scsi_low_revoke_ccb(slp, cb, fdone);
3779 		if (cb != NULL)
3784 			cb->ccb_flags |= CCB_STARTQ;
3788 						  cb, ccb_chain);
3793 						   ecb, cb, ccb_chain);
3795 			ecb = cb;
3955 	struct slccb *cb;  local
3982 			if ((cb = SCSI_LOW_ALLOC_CCB(1)) == NULL)
3985 			cb->osdep = NULL;
3986 			cb->bp = NULL;
3990 			scsi_low_enqueue(slp, ti, li, cb,
3993 			scsi_low_poll(slp, cb);
4013 scsi_low_poll(slp, cb)  in scsi_low_poll()  argument
4015 	struct slccb *cb;
4073 scsi_low_test_cmdlnk(slp, cb)  in scsi_low_test_cmdlnk()  argument
4075 	struct slccb *cb;
4079 	if ((cb->ccb_flags & SCSI_LOW_CMDLNK_NOK) != 0)
4082 	memcpy(cb->ccb_scsi_cmd, slp->sl_scp.scp_cmd,
4084 	cb->ccb_scsi_cmd[slp->sl_scp.scp_cmdlen - 1] |= 1;
4085 	slp->sl_scp.scp_cmd = cb->ccb_scsi_cmd;
4127 	struct slccb *cb;  local
4134 		cb = slp->sl_Qnexus;
4139 		cb = TAILQ_FIRST(&li->li_discq);
4145 	    (u_long) ti, (u_long) li, (u_long) cb, slp->sl_nio);
4167 		if (cb != NULL)
4170 		       (u_int) cb->ccb_scp.scp_cmd[0],
4171 		       cb->ccb_scp.scp_cmdlen, 
4172 		       cb->ccb_datalen,
4173 		       cb->ccb_scp.scp_datalen,
4174 		       (u_int) cb->ccb_sscp.scp_status,
4175 		       cb->ccb_error, SCSI_LOW_ERRORBITS);