From 4977f49a15c933566f6912d44c2d3c9160f290a0 Mon Sep 17 00:00:00 2001
From: mjacob <mjacob@FreeBSD.org>
Date: Sun, 8 Feb 2004 19:17:56 +0000
Subject: Remove condition variables and status associated with target mode
 enabling. Instead, go to an interrupt/polled model.

Fix get_lun_statep so we don't panic if there are no wildcard luns enabled.

MFC after:	6 days
---
 sys/dev/isp/isp_freebsd.c | 415 +++++++++++++++++++---------------------------
 1 file changed, 169 insertions(+), 246 deletions(-)

(limited to 'sys/dev')

diff --git a/sys/dev/isp/isp_freebsd.c b/sys/dev/isp/isp_freebsd.c
index 3ce3322..857b62d 100644
--- a/sys/dev/isp/isp_freebsd.c
+++ b/sys/dev/isp/isp_freebsd.c
@@ -201,12 +201,6 @@ isp_attach(struct ispsoftc *isp)
 		isp->isp_path2 = path;
 	}
 
-#ifdef	ISP_TARGET_MODE
-	cv_init(&isp->isp_osinfo.tgtcv0[0], "isp_tgcv0a");
-	cv_init(&isp->isp_osinfo.tgtcv0[1], "isp_tgcv0b");
-	cv_init(&isp->isp_osinfo.tgtcv1[0], "isp_tgcv1a");
-	cv_init(&isp->isp_osinfo.tgtcv1[1], "isp_tgcv1b");
-#endif
 	/*
 	 * Create device nodes
 	 */
@@ -538,15 +532,12 @@ static INLINE int is_lun_enabled(struct ispsoftc *, int, lun_id_t);
 static INLINE int are_any_luns_enabled(struct ispsoftc *, int);
 static INLINE tstate_t *get_lun_statep(struct ispsoftc *, int, lun_id_t);
 static INLINE void rls_lun_statep(struct ispsoftc *, tstate_t *);
-static INLINE int isp_psema_sig_rqe(struct ispsoftc *, int);
-static INLINE int isp_cv_wait_timed_rqe(struct ispsoftc *, int, int);
-static INLINE void isp_cv_signal_rqe(struct ispsoftc *, int, int);
-static INLINE void isp_vsema_rqe(struct ispsoftc *, int);
 static INLINE atio_private_data_t *isp_get_atpd(struct ispsoftc *, int);
 static cam_status
 create_lun_state(struct ispsoftc *, int, struct cam_path *, tstate_t **);
 static void destroy_lun_state(struct ispsoftc *, tstate_t *);
-static void isp_en_lun(struct ispsoftc *, union ccb *);
+static int isp_en_lun(struct ispsoftc *, union ccb *);
+static void isp_ledone(struct ispsoftc *, lun_entry_t *);
 static cam_status isp_abort_tgt_ccb(struct ispsoftc *, union ccb *);
 static timeout_t isp_refire_putback_atio;
 static void isp_complete_ctio(union ccb *);
@@ -604,6 +595,7 @@ get_lun_statep(struct ispsoftc *isp, int bus, lun_id_t lun)
 			tptr->hold++;
 			return (tptr);
 		}
+		return (NULL);
 	} else {
 		tptr = isp->isp_osinfo.lun_hash[LUN_HASH_FUNC(isp, bus, lun)];
 		if (tptr == NULL) {
@@ -627,74 +619,6 @@ rls_lun_statep(struct ispsoftc *isp, tstate_t *tptr)
 		tptr->hold--;
 }
 
-static INLINE int
-isp_psema_sig_rqe(struct ispsoftc *isp, int bus)
-{
-	while (isp->isp_osinfo.tmflags[bus] & TM_BUSY) {
-		isp->isp_osinfo.tmflags[bus] |= TM_WANTED;
-#ifdef	ISP_SMPLOCK
-		if (cv_wait_sig(&isp->isp_osinfo.tgtcv0[bus], &isp->isp_lock)) {
-			return (-1);
-		}
-#else
-		/*
-		 * It's not allowed for us to use tsleep any more because
-		 * a caller might have a non-sleepable lock held.
-		 */
-#if	0
-		if (tsleep(&isp->isp_osinfo.tgtcv0[bus], PZERO, "cv_isp", 0)) {
-			return (-1);
-		}
-#else
-		return (-1);
-#endif
-#endif
-		isp->isp_osinfo.tmflags[bus] |= TM_BUSY;
-	}
-	return (0);
-}
-
-static INLINE int
-isp_cv_wait_timed_rqe(struct ispsoftc *isp, int bus, int timo)
-{
-#ifdef	ISP_SMPLOCK
-	if (cv_timedwait(&isp->isp_osinfo.tgtcv1[bus], &isp->isp_lock, timo)) {
-		return (-1);
-	}
-#else
-	if (tsleep(&isp->isp_osinfo.tgtcv1[bus], PZERO, "cv_isp1", 0)) {
-		return (-1);
-	}
-#endif
-	return (0);
-}
-
-static INLINE void
-isp_cv_signal_rqe(struct ispsoftc *isp, int bus, int status)
-{
-	isp->isp_osinfo.rstatus[bus] = status;
-#ifdef	ISP_SMPLOCK
-	cv_signal(&isp->isp_osinfo.tgtcv1[bus]);
-#else
-	wakeup(&isp->isp_osinfo.tgtcv1[bus]);
-#endif
-}
-
-static INLINE void
-isp_vsema_rqe(struct ispsoftc *isp, int bus)
-{
-	if (isp->isp_osinfo.tmflags[bus] & TM_WANTED) {
-		isp->isp_osinfo.tmflags[bus] &= ~TM_WANTED;
-#ifdef	ISP_SMPLOCK
-		cv_signal(&isp->isp_osinfo.tgtcv0[bus]);
-#else
-		cv_signal(&isp->isp_osinfo.tgtcv0[bus]);
-		/* wakeup(&isp->isp_osinfo.tgtcv0[bus]); */
-#endif
-	}
-	isp->isp_osinfo.tmflags[bus] &= ~TM_BUSY;
-}
-
 static INLINE atio_private_data_t *
 isp_get_atpd(struct ispsoftc *isp, int tag)
 {
@@ -759,10 +683,10 @@ destroy_lun_state(struct ispsoftc *isp, tstate_t *tptr)
 	int hfx;
 	tstate_t *lw, *pw;
 
-	hfx = LUN_HASH_FUNC(isp, tptr->bus, tptr->lun);
 	if (tptr->hold) {
 		return;
 	}
+	hfx = LUN_HASH_FUNC(isp, tptr->bus, tptr->lun);
 	pw = isp->isp_osinfo.lun_hash[hfx];
 	if (pw == NULL) {
 		return;
@@ -787,32 +711,37 @@ destroy_lun_state(struct ispsoftc *isp, tstate_t *tptr)
 }
 
 /*
- * we enter with our locks held.
+ * Enable luns.
  */
-static void
+static int
 isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 {
-	const char lfmt[] = "lun %d now %sabled for target mode on channel %d";
 	struct ccb_en_lun *cel = &ccb->cel;
 	tstate_t *tptr;
-	u_int16_t rstat;
+	u_int32_t seq;
 	int bus, cmd, av, wildcard, tm_on;
 	lun_id_t lun;
 	target_id_t tgt;
 
-
-	bus = XS_CHANNEL(ccb) & 0x1;
+	bus = XS_CHANNEL(ccb);
+	if (bus > 1) {
+		xpt_print_path(ccb->ccb_h.path);
+		printf("illegal bus %d\n", bus);
+		ccb->ccb_h.status = CAM_PATH_INVALID;
+		return (-1);
+	}
 	tgt = ccb->ccb_h.target_id;
 	lun = ccb->ccb_h.target_lun;
 
-	/*
-	 * Do some sanity checking first.
-	 */
+	isp_prt(isp, ISP_LOGTDEBUG0,
+	    "isp_en_lun: %sabling lun 0x%x on channel %d",
+	    cel->enable? "en" : "dis", lun, bus);
+
 
 	if ((lun != CAM_LUN_WILDCARD) &&
 	    (lun < 0 || lun >= (lun_id_t) isp->isp_maxluns)) {
 		ccb->ccb_h.status = CAM_LUN_INVALID;
-		return;
+		return (-1);
 	}
 
 	if (IS_SCSI(isp)) {
@@ -821,7 +750,7 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 		if (tgt != CAM_TARGET_WILDCARD &&
 		    tgt != sdp->isp_initiator_id) {
 			ccb->ccb_h.status = CAM_TID_INVALID;
-			return;
+			return (-1);
 		}
 	} else {
 		/*
@@ -832,7 +761,7 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 		if (tgt != CAM_TARGET_WILDCARD &&
 		    tgt != FCPARAM(isp)->isp_iid) {
 			ccb->ccb_h.status = CAM_TID_INVALID;
-			return;
+			return (-1);
 		}
 #endif
 		/*
@@ -842,7 +771,7 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 			isp_prt(isp, ISP_LOGERR,
 			    "firmware does not support target mode");
 			ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
-			return;
+			return (-1);
 		}
 		/*
 		 * XXX: We *could* handle non-SCCLUN f/w, but we'd have to
@@ -852,7 +781,7 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 			isp_prt(isp, ISP_LOGERR,
 			    "firmware not SCCLUN capable");
 			ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
-			return;
+			return (-1);
 		}
 	}
 
@@ -861,7 +790,7 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 			wildcard = 1;
 		} else {
 			ccb->ccb_h.status = CAM_LUN_INVALID;
-			return;
+			return (-1);
 		}
 	} else {
 		wildcard = 0;
@@ -880,10 +809,9 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 	if (wildcard) {
 		tptr = &isp->isp_osinfo.tsdflt[bus];
 		if (cel->enable) {
-			if (isp->isp_osinfo.tmflags[bus] &
-			    TM_WILDCARD_ENABLED) {
+			if (tm_on) {
 				ccb->ccb_h.status = CAM_LUN_ALRDY_ENA;
-				return;
+				return (-1);
 			}
 			ccb->ccb_h.status =
 			    xpt_create_path(&tptr->owner, NULL,
@@ -891,20 +819,19 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 			    xpt_path_target_id(ccb->ccb_h.path),
 			    xpt_path_lun_id(ccb->ccb_h.path));
 			if (ccb->ccb_h.status != CAM_REQ_CMP) {
-				return;
+				return (-1);
 			}
 			SLIST_INIT(&tptr->atios);
 			SLIST_INIT(&tptr->inots);
 			isp->isp_osinfo.tmflags[bus] |= TM_WILDCARD_ENABLED;
 		} else {
-			if ((isp->isp_osinfo.tmflags[bus] &
-			    TM_WILDCARD_ENABLED) == 0) {
+			if (tm_on == 0) {
 				ccb->ccb_h.status = CAM_REQ_CMP;
-				return;
+				return (-1);
 			}
 			if (tptr->hold) {
 				ccb->ccb_h.status = CAM_SCSI_BUSY;
-				return;
+				return (-1);
 			}
 			xpt_free_path(tptr->owner);
 			isp->isp_osinfo.tmflags[bus] &= ~TM_WILDCARD_ENABLED;
@@ -926,7 +853,7 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 				    ~TM_WILDCARD_ENABLED;
 				xpt_free_path(tptr->owner);
 			}
-			return;
+			return (-1);
 		}
 		isp->isp_osinfo.tmflags[bus] |= TM_TMODE_ENABLED;
 		isp_prt(isp, ISP_LOGINFO,
@@ -934,12 +861,12 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 	} else if (cel->enable == 0 && tm_on && wildcard) {
 		if (are_any_luns_enabled(isp, bus)) {
 			ccb->ccb_h.status = CAM_SCSI_BUSY;
-			return;
+			return (-1);
 		}
 		av = isp_control(isp, ISPCTL_TOGGLE_TMODE, &av);
 		if (av) {
 			ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
-			return;
+			return (-1);
 		}
 		isp->isp_osinfo.tmflags[bus] &= ~TM_TMODE_ENABLED;
 		isp_prt(isp, ISP_LOGINFO,
@@ -948,33 +875,40 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 
 	if (wildcard) {
 		ccb->ccb_h.status = CAM_REQ_CMP;
-		return;
+		return (-1);
+	}
+
+	/*
+	 * Find an empty slot
+	 */
+	for (seq = 0; seq < NLEACT; seq++) {
+		if (isp->isp_osinfo.leact[seq] == 0) {
+			break;
+		}
 	}
+	if (seq >= NLEACT) {
+		ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
+		return (-1);
+		
+	}
+	isp->isp_osinfo.leact[seq] = ccb;
 
 	if (cel->enable) {
 		ccb->ccb_h.status =
 		    create_lun_state(isp, bus, ccb->ccb_h.path, &tptr);
 		if (ccb->ccb_h.status != CAM_REQ_CMP) {
-			return;
+			isp->isp_osinfo.leact[seq] = 0;
+			return (-1);
 		}
 	} else {
 		tptr = get_lun_statep(isp, bus, lun);
 		if (tptr == NULL) {
 			ccb->ccb_h.status = CAM_LUN_INVALID;
-			return;
+			return (-1);
 		}
 	}
 
-	if (isp_psema_sig_rqe(isp, bus)) {
-		rls_lun_statep(isp, tptr);
-		if (cel->enable)
-			destroy_lun_state(isp, tptr);
-		ccb->ccb_h.status = CAM_REQ_CMP_ERR;
-		return;
-	}
-
 	if (cel->enable) {
-		u_int32_t seq = isp->isp_osinfo.rollinfo++;
 		int c, n, ulun = lun;
 
 		cmd = RQSTYPE_ENABLE_LUN;
@@ -989,33 +923,15 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 			 */
 			ulun = 0;
 		}
-		rstat = LUN_ERR;
-		if (isp_lun_cmd(isp, cmd, bus, tgt, ulun, c, n, seq)) {
-			xpt_print_path(ccb->ccb_h.path);
-			isp_prt(isp, ISP_LOGWARN, "isp_lun_cmd failed");
-			goto out;
-		}
-		if (isp_cv_wait_timed_rqe(isp, bus, 30 * hz)) {
-			xpt_print_path(ccb->ccb_h.path);
-			isp_prt(isp, ISP_LOGERR,
-			    "wait for ENABLE/MODIFY LUN timed out");
-			goto out;
-		}
-		rstat = isp->isp_osinfo.rstatus[bus];
-		if (rstat != LUN_OK) {
-			xpt_print_path(ccb->ccb_h.path);
-			isp_prt(isp, ISP_LOGERR,
-			    "ENABLE/MODIFY LUN returned 0x%x", rstat);
-			goto out;
+		if (isp_lun_cmd(isp, cmd, bus, tgt, ulun, c, n, seq+1) == 0) {
+			rls_lun_statep(isp, tptr);
+			ccb->ccb_h.status = CAM_REQ_INPROG;
+			return (seq);
 		}
 	} else {
 		int c, n, ulun = lun;
-		u_int32_t seq;
 
-		rstat = LUN_ERR;
-		seq = isp->isp_osinfo.rollinfo++;
 		cmd = -RQSTYPE_MODIFY_LUN;
-
 		c = DFLT_CMND_CNT;
 		n = DFLT_INOT_CNT;
 		if (IS_FC(isp) && lun != 0) {
@@ -1026,86 +942,116 @@ isp_en_lun(struct ispsoftc *isp, union ccb *ccb)
 			 */
 			ulun = 0;
 		}
-		if (isp_lun_cmd(isp, cmd, bus, tgt, ulun, c, n, seq)) {
-			xpt_print_path(ccb->ccb_h.path);
-			isp_prt(isp, ISP_LOGERR, "isp_lun_cmd failed");
-			goto out;
-		}
-		if (isp_cv_wait_timed_rqe(isp, bus, 30 * hz)) {
-			xpt_print_path(ccb->ccb_h.path);
-			isp_prt(isp, ISP_LOGERR,
-			    "wait for MODIFY LUN timed out");
-			goto out;
-		}
-		rstat = isp->isp_osinfo.rstatus[bus];
-		if (rstat != LUN_OK) {
-			xpt_print_path(ccb->ccb_h.path);
-			isp_prt(isp, ISP_LOGERR,
-			    "MODIFY LUN returned 0x%x", rstat);
-			goto out;
-		}
-		if (IS_FC(isp) && lun) {
-			goto out;
+		if (isp_lun_cmd(isp, cmd, bus, tgt, ulun, c, n, seq+1) == 0) {
+			rls_lun_statep(isp, tptr);
+			ccb->ccb_h.status = CAM_REQ_INPROG;
+			return (seq);
 		}
+	}
+	rls_lun_statep(isp, tptr);
+	xpt_print_path(ccb->ccb_h.path);
+	printf("isp_lun_cmd failed\n");
+	isp->isp_osinfo.leact[seq] = 0;
+	ccb->ccb_h.status = CAM_REQ_CMP_ERR;
+	return (-1);
+}
 
-		seq = isp->isp_osinfo.rollinfo++;
+static void
+isp_ledone(struct ispsoftc *isp, lun_entry_t *lep)
+{
+	const char lfmt[] = "lun %d now %sabled for target mode on channel %d";
+	union ccb *ccb;
+	u_int32_t seq;
+	tstate_t *tptr;
+	int av;
+	struct ccb_en_lun *cel;
 
-		rstat = LUN_ERR;
-		cmd = -RQSTYPE_ENABLE_LUN;
-		if (isp_lun_cmd(isp, cmd, bus, tgt, lun, 0, 0, seq)) {
-			xpt_print_path(ccb->ccb_h.path);
-			isp_prt(isp, ISP_LOGERR, "isp_lun_cmd failed");
-			goto out;
-		}
-		if (isp_cv_wait_timed_rqe(isp, bus, 30 * hz)) {
-			xpt_print_path(ccb->ccb_h.path);
-			isp_prt(isp, ISP_LOGERR,
-			     "wait for DISABLE LUN timed out");
-			goto out;
-		}
-		rstat = isp->isp_osinfo.rstatus[bus];
-		if (rstat != LUN_OK) {
-			xpt_print_path(ccb->ccb_h.path);
-			isp_prt(isp, ISP_LOGWARN,
-			    "DISABLE LUN returned 0x%x", rstat);
-			goto out;
-		}
-		if (are_any_luns_enabled(isp, bus) == 0) {
-			av = isp_control(isp, ISPCTL_TOGGLE_TMODE, &av);
-			if (av) {
-				isp_prt(isp, ISP_LOGWARN,
-				    "disable target mode on channel %d failed",
-				    bus);
-				goto out;
-			}
-			isp->isp_osinfo.tmflags[bus] &= ~TM_TMODE_ENABLED;
-			isp_prt(isp, ISP_LOGINFO,
-			    "Target Mode disabled on channel %d", bus);
-		}
+	seq = lep->le_reserved - 1;
+	if (seq >= NLEACT) {
+		isp_prt(isp, ISP_LOGERR,
+		    "seq out of range (%u) in isp_ledone", seq);
+		return;
+	}
+	ccb = isp->isp_osinfo.leact[seq];
+	if (ccb == 0) {
+		isp_prt(isp, ISP_LOGERR,
+		    "no ccb for seq %u in isp_ledone", seq);
+		return;
+	}
+	cel = &ccb->cel;
+	tptr = get_lun_statep(isp, XS_CHANNEL(ccb), XS_LUN(ccb));
+	if (tptr == NULL) {
+		xpt_print_path(ccb->ccb_h.path);
+		printf("null tptr in isp_ledone\n");
+		isp->isp_osinfo.leact[seq] = 0;
+		return;
 	}
 
-out:
-	isp_vsema_rqe(isp, bus);
-
-	if (rstat != LUN_OK) {
+	if (lep->le_status != LUN_OK) {
 		xpt_print_path(ccb->ccb_h.path);
-		isp_prt(isp, ISP_LOGWARN,
-		    "lun %sable failed", (cel->enable) ? "en" : "dis");
+		printf("ENABLE/MODIFY LUN returned 0x%x\n", lep->le_status);
+err:
 		ccb->ccb_h.status = CAM_REQ_CMP_ERR;
+		xpt_print_path(ccb->ccb_h.path);
 		rls_lun_statep(isp, tptr);
-		if (cel->enable)
-			destroy_lun_state(isp, tptr);
+		isp->isp_osinfo.leact[seq] = 0;
+		ISPLOCK_2_CAMLOCK(isp);
+		xpt_done(ccb);
+		CAMLOCK_2_ISPLOCK(isp);
+		return;
 	} else {
-		isp_prt(isp, ISP_LOGINFO, lfmt, lun,
-		    (cel->enable) ? "en" : "dis", bus);
+		isp_prt(isp, ISP_LOGTDEBUG0,
+		    "isp_ledone: ENABLE/MODIFY done okay");
+	}
+
+
+	if (cel->enable) {
+		ccb->ccb_h.status = CAM_REQ_CMP;
+		isp_prt(isp, /* ISP_LOGINFO */ ISP_LOGALL, lfmt,
+		    XS_LUN(ccb), "en", XS_CHANNEL(ccb));
 		rls_lun_statep(isp, tptr);
-		if (cel->enable == 0) {
-			destroy_lun_state(isp, tptr);
+		isp->isp_osinfo.leact[seq] = 0;
+		ISPLOCK_2_CAMLOCK(isp);
+		xpt_done(ccb);
+		CAMLOCK_2_ISPLOCK(isp);
+		return;
+	}
+
+	if (lep->le_header.rqs_entry_type == RQSTYPE_MODIFY_LUN) {
+		if (isp_lun_cmd(isp, -RQSTYPE_ENABLE_LUN, XS_CHANNEL(ccb),
+		    XS_TGT(ccb), XS_LUN(ccb), 0, 0, seq+1)) {
+			xpt_print_path(ccb->ccb_h.path);
+			printf("isp_ledone: isp_lun_cmd failed\n");
+			goto err;
 		}
-		ccb->ccb_h.status = CAM_REQ_CMP;
+		rls_lun_statep(isp, tptr);
+		return;
+	}
+
+	isp_prt(isp, ISP_LOGINFO, lfmt, XS_LUN(ccb), "dis", XS_CHANNEL(ccb));
+	rls_lun_statep(isp, tptr);
+	destroy_lun_state(isp, tptr);
+	ccb->ccb_h.status = CAM_REQ_CMP;
+	isp->isp_osinfo.leact[seq] = 0;
+	ISPLOCK_2_CAMLOCK(isp);
+	xpt_done(ccb);
+	CAMLOCK_2_ISPLOCK(isp);
+	if (are_any_luns_enabled(isp, XS_CHANNEL(ccb)) == 0) {
+		int bus = XS_CHANNEL(ccb);
+		av = bus << 31;
+		av = isp_control(isp, ISPCTL_TOGGLE_TMODE, &av);
+		if (av) {
+			isp_prt(isp, ISP_LOGWARN,
+			    "disable target mode on channel %d failed", bus);
+		} else {
+			isp_prt(isp, ISP_LOGINFO,
+			    "Target Mode disabled on channel %d", bus);
+		}
+		isp->isp_osinfo.tmflags[bus] &= ~TM_TMODE_ENABLED;
 	}
 }
 
+
 static cam_status
 isp_abort_tgt_ccb(struct ispsoftc *isp, union ccb *ccb)
 {
@@ -1604,35 +1550,6 @@ isp_handle_platform_atio2(struct ispsoftc *isp, at2_entry_t *aep)
 		}
 	}
 
-	if (tptr == NULL) {
-		/*
-		 * What we'd like to know is whether or not we have a listener
-		 * upstream that really hasn't configured yet. If we do, then
-		 * we can give a more sensible reply here. If not, then we can
-		 * reject this out of hand.
-		 *
-		 * Choices for what to send were
-		 *
-                 *	Not Ready, Unit Not Self-Configured Yet
-		 *	(0x2,0x3e,0x00)
-		 *
-		 * for the former and
-		 *
-		 *	Illegal Request, Logical Unit Not Supported
-		 *	(0x5,0x25,0x00)
-		 *
-		 * for the latter.
-		 *
-		 * We used to decide whether there was at least one listener
-		 * based upon whether the black hole driver was configured.
-		 * However, recent config(8) changes have made this hard to do
-		 * at this time.
-		 *
-		 */
-		isp_endcmd(isp, aep, SCSI_STATUS_BUSY, 0);
-		return (0);
-	}
-
 	atp = isp_get_atpd(isp, 0);
 	atiop = (struct ccb_accept_tio *) SLIST_FIRST(&tptr->atios);
 	if (atiop == NULL || atp == NULL) {
@@ -1699,6 +1616,7 @@ isp_handle_platform_atio2(struct ispsoftc *isp, at2_entry_t *aep)
 	atp->last_xframt = 0;
 	atp->bytes_xfered = 0;
 	atp->state = ATPD_STATE_CAM;
+	ISPLOCK_2_CAMLOCK(siP);
 	xpt_done((union ccb*)atiop);
 
 	isp_prt(isp, ISP_LOGTDEBUG0,
@@ -2216,14 +2134,26 @@ isp_action(struct cam_sim *sim, union ccb *ccb)
 #ifdef	ISP_TARGET_MODE
 	case XPT_EN_LUN:		/* Enable LUN as a target */
 	{
-		int iok;
+		int seq, iok, i;
 		CAMLOCK_2_ISPLOCK(isp);
 		iok = isp->isp_osinfo.intsok;
 		isp->isp_osinfo.intsok = 0;
-		isp_en_lun(isp, ccb);
+		seq = isp_en_lun(isp, ccb);
+		if (seq < 0) {
+			isp->isp_osinfo.intsok = iok;
+			ISPLOCK_2_CAMLOCK(isp);
+			xpt_done(ccb);
+			break;
+		}
+		for (i = 0; isp->isp_osinfo.leact[seq] && i < 30 * 1000; i++) {
+			u_int16_t isr, sema, mbox;
+			if (ISP_READ_ISR(isp, &isr, &sema, &mbox)) {
+				isp_intr(isp, isr, sema, mbox);
+			}
+			DELAY(1000);
+		}
 		isp->isp_osinfo.intsok = iok;
 		ISPLOCK_2_CAMLOCK(isp);
-		xpt_done(ccb);
 		break;
 	}
 	case XPT_NOTIFY_ACK:		/* recycle notify ack */
@@ -3122,14 +3052,7 @@ isp_async(struct ispsoftc *isp, ispasync_t cmd, void *arg)
 			break;
 		case RQSTYPE_ENABLE_LUN:
 		case RQSTYPE_MODIFY_LUN:
-			if (IS_DUALBUS(isp)) {
-				bus =
-				    GET_BUS_VAL(((lun_entry_t *)arg)->le_rsvd);
-			} else {
-				bus = 0;
-			}
-			isp_cv_signal_rqe(isp, bus,
-			    ((lun_entry_t *)arg)->le_status);
+			isp_ledone(isp, (lun_entry_t *) arg);
 			break;
 		}
 		break;
-- 
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