xref: /freebsd/sys/dev/isp/isp_target.c (revision c66ec88fed842fbaad62c30d510644ceb7bd2d71)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  *  Copyright (c) 2009-2020 Alexander Motin <mav@FreeBSD.org>
5  *  Copyright (c) 1997-2009 by Matthew Jacob
6  *  All rights reserved.
7  *
8  *  Redistribution and use in source and binary forms, with or without
9  *  modification, are permitted provided that the following conditions
10  *  are met:
11  *
12  *  1. Redistributions of source code must retain the above copyright
13  *     notice, this list of conditions and the following disclaimer.
14  *  2. Redistributions in binary form must reproduce the above copyright
15  *     notice, this list of conditions and the following disclaimer in the
16  *     documentation and/or other materials provided with the distribution.
17  *
18  *  THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19  *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  *  ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22  *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  *  SUCH DAMAGE.
29  *
30  */
31 /*
32  * Machine and OS Independent Target Mode Code for the Qlogic FC adapters.
33  */
34 /*
35  * Bug fixes gratefully acknowledged from:
36  *	Oded Kedem <oded@kashya.com>
37  */
38 /*
39  * Include header file appropriate for platform we're building on.
40  */
41 
42 #ifdef	__NetBSD__
43 #include <dev/ic/isp_netbsd.h>
44 #endif
45 #ifdef	__FreeBSD__
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
48 #include <dev/isp/isp_freebsd.h>
49 #endif
50 #ifdef	__OpenBSD__
51 #include <dev/ic/isp_openbsd.h>
52 #endif
53 #ifdef	__linux__
54 #include "isp_linux.h"
55 #endif
56 
57 #ifdef	ISP_TARGET_MODE
58 static void isp_got_tmf_24xx(ispsoftc_t *, at7_entry_t *);
59 static void isp_handle_abts(ispsoftc_t *, abts_t *);
60 static void isp_handle_ctio7(ispsoftc_t *, ct7_entry_t *);
61 static void isp_handle_notify_24xx(ispsoftc_t *, in_fcentry_24xx_t *);
62 
63 /*
64  * The Qlogic driver gets an interrupt to look at response queue entries.
65  * Some of these are status completions for initiatior mode commands, but
66  * if target mode is enabled, we get a whole wad of response queue entries
67  * to be handled here.
68  *
69  * Basically the split into 3 main groups: Lun Enable/Modification responses,
70  * SCSI Command processing, and Immediate Notification events.
71  *
72  * You start by writing a request queue entry to enable target mode (and
73  * establish some resource limitations which you can modify later).
74  * The f/w responds with a LUN ENABLE or LUN MODIFY response with
75  * the status of this action. If the enable was successful, you can expect...
76  *
77  * Response queue entries with SCSI commands encapsulate show up in an ATIO
78  * (Accept Target IO) type- sometimes with enough info to stop the command at
79  * this level. Ultimately the driver has to feed back to the f/w's request
80  * queue a sequence of CTIOs (continue target I/O) that describe data to
81  * be moved and/or status to be sent) and finally finishing with sending
82  * to the f/w's response queue an ATIO which then completes the handshake
83  * with the f/w for that command. There's a lot of variations on this theme,
84  * including flags you can set in the CTIO for the Qlogic 2X00 fibre channel
85  * cards that 'auto-replenish' the f/w's ATIO count, but this is the basic
86  * gist of it.
87  *
88  * The third group that can show up in the response queue are Immediate
89  * Notification events. These include things like notifications of SCSI bus
90  * resets, or Bus Device Reset messages or other messages received. This
91  * a classic oddbins area. It can get  a little weird because you then turn
92  * around and acknowledge the Immediate Notify by writing an entry onto the
93  * request queue and then the f/w turns around and gives you an acknowledgement
94  * to *your* acknowledgement on the response queue (the idea being to let
95  * the f/w tell you when the event is *really* over I guess).
96  *
97  */
98 
99 
100 /*
101  * A new response queue entry has arrived. The interrupt service code
102  * has already swizzled it into the platform dependent from canonical form.
103  *
104  * Because of the way this driver is designed, unfortunately most of the
105  * actual synchronization work has to be done in the platform specific
106  * code- we have no synchroniation primitives in the common code.
107  */
108 
109 int
110 isp_target_notify(ispsoftc_t *isp, void *vptr, uint32_t *optrp, uint16_t ql)
111 {
112 	union {
113 		at7_entry_t	*at7iop;
114 		ct7_entry_t	*ct7iop;
115 		in_fcentry_24xx_t *inot_24xx;
116 		na_fcentry_24xx_t *nack_24xx;
117 		isphdr_t	*hp;
118 		abts_t		*abts;
119 		abts_rsp_t	*abts_rsp;
120 		void *		*vp;
121 #define	at7iop		unp.at7iop
122 #define	ct7iop		unp.ct7iop
123 #define	inot_24xx	unp.inot_24xx
124 #define	nack_24xx	unp.nack_24xx
125 #define	abts		unp.abts
126 #define	abts_rsp	unp.abts_rsp
127 #define	hdrp		unp.hp
128 	} unp;
129 	uint8_t local[QENTRY_LEN];
130 	int type, len, level, rval = 1;
131 
132 	type = isp_get_response_type(isp, (isphdr_t *)vptr);
133 	unp.vp = vptr;
134 
135 	if (isp->isp_dblev & ISP_LOGTDEBUG2)
136 		isp_print_qentry(isp, __func__, *optrp, vptr);
137 
138 	switch (type) {
139 	case RQSTYPE_ATIO:
140 		isp_get_atio7(isp, at7iop, (at7_entry_t *) local);
141 		at7iop = (at7_entry_t *) local;
142 		/*
143 		 * Check for and do something with commands whose
144 		 * IULEN extends past a single queue entry.
145 		 */
146 		len = at7iop->at_ta_len & 0x0fff;
147 		if (len > (QENTRY_LEN - 8)) {
148 			len -= (QENTRY_LEN - 8);
149 			isp_prt(isp, ISP_LOGINFO, "long IU length (%d) ignored", len);
150 			while (len > 0) {
151 				*optrp = ISP_NXT_QENTRY(*optrp, ql);
152 				len -= QENTRY_LEN;
153 			}
154 		}
155 		/*
156 		 * Check for a task management function
157 		 */
158 		if (at7iop->at_cmnd.fcp_cmnd_task_management) {
159 			isp_got_tmf_24xx(isp, at7iop);
160 			break;
161 		}
162 		/*
163 		 * Just go straight to outer layer for this one.
164 		 */
165 		isp_async(isp, ISPASYNC_TARGET_ACTION, local);
166 		break;
167 
168 	case RQSTYPE_CTIO7:
169 		isp_get_ctio7(isp, ct7iop, (ct7_entry_t *) local);
170 		isp_handle_ctio7(isp, (ct7_entry_t *) local);
171 		break;
172 
173 	case RQSTYPE_NOTIFY:
174 		isp_get_notify_24xx(isp, inot_24xx, (in_fcentry_24xx_t *)local);
175 		isp_handle_notify_24xx(isp, (in_fcentry_24xx_t *)local);
176 		break;
177 
178 	case RQSTYPE_NOTIFY_ACK:
179 		/*
180 		 * The ISP is acknowledging our acknowledgement of an
181 		 * Immediate Notify entry for some asynchronous event.
182 		 */
183 		isp_get_notify_ack_24xx(isp, nack_24xx, (na_fcentry_24xx_t *) local);
184 		nack_24xx = (na_fcentry_24xx_t *) local;
185 		if (nack_24xx->na_status != NA_OK)
186 			level = ISP_LOGINFO;
187 		else
188 			level = ISP_LOGTDEBUG1;
189 		isp_prt(isp, level, "Notify Ack Status=0x%x; Subcode 0x%x seqid=0x%x", nack_24xx->na_status, nack_24xx->na_status_subcode, nack_24xx->na_rxid);
190 		break;
191 
192 	case RQSTYPE_ABTS_RCVD:
193 		isp_get_abts(isp, abts, (abts_t *)local);
194 		isp_handle_abts(isp, (abts_t *)local);
195 		break;
196 	case RQSTYPE_ABTS_RSP:
197 		isp_get_abts_rsp(isp, abts_rsp, (abts_rsp_t *)local);
198 		abts_rsp = (abts_rsp_t *) local;
199 		if (abts_rsp->abts_rsp_status)
200 			level = ISP_LOGINFO;
201 		else
202 			level = ISP_LOGTDEBUG0;
203 		isp_prt(isp, level, "ABTS RSP response[0x%x]: status=0x%x sub=(0x%x 0x%x)", abts_rsp->abts_rsp_rxid_task, abts_rsp->abts_rsp_status,
204 		    abts_rsp->abts_rsp_payload.rsp.subcode1, abts_rsp->abts_rsp_payload.rsp.subcode2);
205 		break;
206 	default:
207 		isp_prt(isp, ISP_LOGERR, "%s: unknown entry type 0x%x", __func__, type);
208 		rval = 0;
209 		break;
210 	}
211 #undef	at7iop
212 #undef	ct7iop
213 #undef	inot_24xx
214 #undef	hack_24xx
215 #undef	abts
216 #undef	abts_rsp
217 #undef	hdrp
218 	return (rval);
219 }
220 
221 /*
222  * Command completion- both for handling cases of no resources or
223  * no blackhole driver, or other cases where we have to, inline,
224  * finish the command sanely, or for normal command completion.
225  *
226  * The 'completion' code value has the scsi status byte in the low 8 bits.
227  * If status is a CHECK CONDITION and bit 8 is nonzero, then bits 12..15 have
228  * the sense key and  bits 16..23 have the ASCQ and bits 24..31 have the ASC
229  * values.
230  *
231  * NB: the key, asc, ascq, cannot be used for parallel SCSI as it doesn't
232  * NB: inline SCSI sense reporting. As such, we lose this information. XXX.
233  *
234  * For both parallel && fibre channel, we use the feature that does
235  * an automatic resource autoreplenish so we don't have then later do
236  * put of an atio to replenish the f/w's resource count.
237  */
238 
239 int
240 isp_endcmd(ispsoftc_t *isp, ...)
241 {
242 	uint32_t code, hdl;
243 	uint8_t sts;
244 	at7_entry_t *aep;
245 	ct7_entry_t _ctio7, *cto = &_ctio7;
246 	va_list ap;
247 	int vpidx, nphdl;
248 
249 	va_start(ap, isp);
250 	aep = va_arg(ap, at7_entry_t *);
251 	nphdl = va_arg(ap, int);
252 	/*
253 	 * Note that vpidx may equal 0xff (unknown) here
254 	 */
255 	vpidx = va_arg(ap, int);
256 	code = va_arg(ap, uint32_t);
257 	hdl = va_arg(ap, uint32_t);
258 	va_end(ap);
259 	isp_prt(isp, ISP_LOGTDEBUG0, "%s: [RX_ID 0x%x] chan %d code %x", __func__, aep->at_rxid, vpidx, code);
260 
261 	sts = code & 0xff;
262 	ISP_MEMZERO(cto, sizeof(*cto));
263 	cto->ct_header.rqs_entry_type = RQSTYPE_CTIO7;
264 	cto->ct_header.rqs_entry_count = 1;
265 	cto->ct_nphdl = nphdl;
266 	cto->ct_rxid = aep->at_rxid;
267 	cto->ct_iid_lo = (aep->at_hdr.s_id[1] << 8) | aep->at_hdr.s_id[2];
268 	cto->ct_iid_hi = aep->at_hdr.s_id[0];
269 	cto->ct_oxid = aep->at_hdr.ox_id;
270 	cto->ct_scsi_status = sts;
271 	cto->ct_vpidx = vpidx;
272 	cto->ct_flags = CT7_NOACK;
273 	if (code & ECMD_TERMINATE) {
274 		cto->ct_flags |= CT7_TERMINATE;
275 	} else if (code & ECMD_SVALID) {
276 		cto->ct_flags |= CT7_FLAG_MODE1 | CT7_SENDSTATUS;
277 		cto->ct_scsi_status |= (FCP_SNSLEN_VALID << 8);
278 		cto->ct_senselen = min(16, MAXRESPLEN_24XX);
279 		ISP_MEMZERO(cto->rsp.m1.ct_resp, sizeof (cto->rsp.m1.ct_resp));
280 		cto->rsp.m1.ct_resp[0] = 0xf0;
281 		cto->rsp.m1.ct_resp[2] = (code >> 12) & 0xf;
282 		cto->rsp.m1.ct_resp[7] = 8;
283 		cto->rsp.m1.ct_resp[12] = (code >> 16) & 0xff;
284 		cto->rsp.m1.ct_resp[13] = (code >> 24) & 0xff;
285 	} else if (code & ECMD_RVALID) {
286 		cto->ct_flags |= CT7_FLAG_MODE1 | CT7_SENDSTATUS;
287 		cto->ct_scsi_status |= (FCP_RSPLEN_VALID << 8);
288 		cto->rsp.m1.ct_resplen = 4;
289 		ISP_MEMZERO(cto->rsp.m1.ct_resp, sizeof (cto->rsp.m1.ct_resp));
290 		cto->rsp.m1.ct_resp[0] = (code >> 12) & 0xf;
291 		cto->rsp.m1.ct_resp[1] = (code >> 16) & 0xff;
292 		cto->rsp.m1.ct_resp[2] = (code >> 24) & 0xff;
293 		cto->rsp.m1.ct_resp[3] = 0;
294 	} else {
295 		cto->ct_flags |= CT7_FLAG_MODE1 | CT7_SENDSTATUS;
296 	}
297 	if (aep->at_cmnd.cdb_dl.sf.fcp_cmnd_dl != 0) {
298 		cto->ct_resid = aep->at_cmnd.cdb_dl.sf.fcp_cmnd_dl;
299 		cto->ct_scsi_status |= (FCP_RESID_UNDERFLOW << 8);
300 	}
301 	cto->ct_syshandle = hdl;
302 	return (isp_send_entry(isp, cto));
303 }
304 
305 /*
306  * These are either broadcast events or specifically CTIO fast completion
307  */
308 
309 void
310 isp_target_async(ispsoftc_t *isp, int bus, int event)
311 {
312 	isp_notify_t notify;
313 
314 	ISP_MEMZERO(&notify, sizeof (isp_notify_t));
315 	notify.nt_hba = isp;
316 	notify.nt_wwn = INI_ANY;
317 	notify.nt_nphdl = NIL_HANDLE;
318 	notify.nt_sid = PORT_ANY;
319 	notify.nt_did = PORT_ANY;
320 	notify.nt_tgt = TGT_ANY;
321 	notify.nt_channel = bus;
322 	notify.nt_lun = LUN_ANY;
323 	notify.nt_tagval = TAG_ANY;
324 	notify.nt_tagval |= (((uint64_t)(isp->isp_serno++)) << 32);
325 
326 	switch (event) {
327 	case ASYNC_LOOP_UP:
328 	case ASYNC_PTPMODE:
329 		isp_prt(isp, ISP_LOGTDEBUG0, "%s: LOOP UP", __func__);
330 		notify.nt_ncode = NT_LINK_UP;
331 		isp_async(isp, ISPASYNC_TARGET_NOTIFY, &notify);
332 		break;
333 	case ASYNC_LOOP_DOWN:
334 		isp_prt(isp, ISP_LOGTDEBUG0, "%s: LOOP DOWN", __func__);
335 		notify.nt_ncode = NT_LINK_DOWN;
336 		isp_async(isp, ISPASYNC_TARGET_NOTIFY, &notify);
337 		break;
338 	case ASYNC_LIP_ERROR:
339 	case ASYNC_LIP_NOS_OLS_RECV:
340 	case ASYNC_LIP_OCCURRED:
341 	case ASYNC_LOOP_RESET:
342 		isp_prt(isp, ISP_LOGTDEBUG0, "%s: LIP RESET", __func__);
343 		notify.nt_ncode = NT_LIP_RESET;
344 		isp_async(isp, ISPASYNC_TARGET_NOTIFY, &notify);
345 		break;
346 	default:
347 		isp_prt(isp, ISP_LOGERR, "%s: unknown event 0x%x", __func__, event);
348 		break;
349 	}
350 }
351 
352 static void
353 isp_got_tmf_24xx(ispsoftc_t *isp, at7_entry_t *aep)
354 {
355 	isp_notify_t notify;
356 	static const char f1[] = "%s from PortID 0x%06x lun %jx seq 0x%08x";
357 	static const char f2[] = "unknown Task Flag 0x%x lun %jx PortID 0x%x tag 0x%08x";
358 	fcportdb_t *lp;
359 	uint16_t chan;
360 	uint32_t sid, did;
361 
362 	ISP_MEMZERO(&notify, sizeof (isp_notify_t));
363 	notify.nt_hba = isp;
364 	notify.nt_wwn = INI_ANY;
365 	notify.nt_lun = CAM_EXTLUN_BYTE_SWIZZLE(be64dec(aep->at_cmnd.fcp_cmnd_lun));
366 	notify.nt_tagval = aep->at_rxid;
367 	notify.nt_tagval |= (((uint64_t)(isp->isp_serno++)) << 32);
368 	notify.nt_lreserved = aep;
369 	sid = (aep->at_hdr.s_id[0] << 16) | (aep->at_hdr.s_id[1] << 8) | aep->at_hdr.s_id[2];
370 	did = (aep->at_hdr.d_id[0] << 16) | (aep->at_hdr.d_id[1] << 8) | aep->at_hdr.d_id[2];
371 	if (ISP_CAP_MULTI_ID(isp) && isp->isp_nchan > 1) {
372 		/* Channel has to be derived from D_ID */
373 		isp_find_chan_by_did(isp, did, &chan);
374 		if (chan == ISP_NOCHAN) {
375 			isp_prt(isp, ISP_LOGWARN,
376 			    "%s: D_ID 0x%x not found on any channel",
377 			    __func__, did);
378 			isp_endcmd(isp, aep, NIL_HANDLE, ISP_NOCHAN,
379 			    ECMD_TERMINATE, 0);
380 			return;
381 		}
382 	} else {
383 		chan = 0;
384 	}
385 	if (isp_find_pdb_by_portid(isp, chan, sid, &lp))
386 		notify.nt_nphdl = lp->handle;
387 	else
388 		notify.nt_nphdl = NIL_HANDLE;
389 	notify.nt_sid = sid;
390 	notify.nt_did = did;
391 	notify.nt_channel = chan;
392 	if (aep->at_cmnd.fcp_cmnd_task_management & FCP_CMND_TMF_QUERY_TASK_SET) {
393 		isp_prt(isp, ISP_LOGINFO, f1, "QUERY TASK SET", sid, notify.nt_lun, aep->at_rxid);
394 		notify.nt_ncode = NT_QUERY_TASK_SET;
395 	} else if (aep->at_cmnd.fcp_cmnd_task_management & FCP_CMND_TMF_ABORT_TASK_SET) {
396 		isp_prt(isp, ISP_LOGINFO, f1, "ABORT TASK SET", sid, notify.nt_lun, aep->at_rxid);
397 		notify.nt_ncode = NT_ABORT_TASK_SET;
398 	} else if (aep->at_cmnd.fcp_cmnd_task_management & FCP_CMND_TMF_CLEAR_TASK_SET) {
399 		isp_prt(isp, ISP_LOGINFO, f1, "CLEAR TASK SET", sid, notify.nt_lun, aep->at_rxid);
400 		notify.nt_ncode = NT_CLEAR_TASK_SET;
401 	} else if (aep->at_cmnd.fcp_cmnd_task_management & FCP_CMND_TMF_QUERY_ASYNC_EVENT) {
402 		isp_prt(isp, ISP_LOGINFO, f1, "QUERY ASYNC EVENT", sid, notify.nt_lun, aep->at_rxid);
403 		notify.nt_ncode = NT_QUERY_ASYNC_EVENT;
404 	} else if (aep->at_cmnd.fcp_cmnd_task_management & FCP_CMND_TMF_LUN_RESET) {
405 		isp_prt(isp, ISP_LOGINFO, f1, "LUN RESET", sid, notify.nt_lun, aep->at_rxid);
406 		notify.nt_ncode = NT_LUN_RESET;
407 	} else if (aep->at_cmnd.fcp_cmnd_task_management & FCP_CMND_TMF_TGT_RESET) {
408 		isp_prt(isp, ISP_LOGINFO, f1, "TARGET RESET", sid, notify.nt_lun, aep->at_rxid);
409 		notify.nt_ncode = NT_TARGET_RESET;
410 	} else if (aep->at_cmnd.fcp_cmnd_task_management & FCP_CMND_TMF_CLEAR_ACA) {
411 		isp_prt(isp, ISP_LOGINFO, f1, "CLEAR ACA", sid, notify.nt_lun, aep->at_rxid);
412 		notify.nt_ncode = NT_CLEAR_ACA;
413 	} else {
414 		isp_prt(isp, ISP_LOGWARN, f2, aep->at_cmnd.fcp_cmnd_task_management, notify.nt_lun, sid, aep->at_rxid);
415 		notify.nt_ncode = NT_UNKNOWN;
416 		isp_endcmd(isp, aep, notify.nt_nphdl, chan, ECMD_RVALID | (0x4 << 12), 0);
417 		return;
418 	}
419 	isp_async(isp, ISPASYNC_TARGET_NOTIFY, &notify);
420 }
421 
422 int
423 isp_notify_ack(ispsoftc_t *isp, void *arg)
424 {
425 	na_fcentry_24xx_t _na, *na = &_na;
426 
427 	/*
428 	 * This is in case a Task Management Function ends up here.
429 	 */
430 	if (((isphdr_t *)arg)->rqs_entry_type == RQSTYPE_ATIO)
431 		return (isp_endcmd(isp, arg, NIL_HANDLE, 0, 0, 0));
432 
433 	in_fcentry_24xx_t *in = arg;
434 
435 	ISP_MEMZERO(na, sizeof(*na));
436 	na->na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK;
437 	na->na_header.rqs_entry_count = 1;
438 	na->na_nphdl = in->in_nphdl;
439 	na->na_flags = in->in_flags;
440 	na->na_status = in->in_status;
441 	na->na_status_subcode = in->in_status_subcode;
442 	na->na_fwhandle = in->in_fwhandle;
443 	na->na_rxid = in->in_rxid;
444 	na->na_oxid = in->in_oxid;
445 	na->na_vpidx = in->in_vpidx;
446 	if (in->in_status == IN24XX_SRR_RCVD) {
447 		na->na_srr_rxid = in->in_srr_rxid;
448 		na->na_srr_reloff_hi = in->in_srr_reloff_hi;
449 		na->na_srr_reloff_lo = in->in_srr_reloff_lo;
450 		na->na_srr_iu = in->in_srr_iu;
451 		/*
452 		 * Whether we're accepting the SRR or rejecting
453 		 * it is determined by looking at the in_reserved
454 		 * field in the original notify structure.
455 		 */
456 		if (in->in_reserved) {
457 			na->na_srr_flags = 1;
458 			na->na_srr_reject_vunique = 0;
459 			/* Unable to perform this command at this time. */
460 			na->na_srr_reject_code = 9;
461 			/* Unable to supply the requested data. */
462 			na->na_srr_reject_explanation = 0x2a;
463 		}
464 	}
465 	return (isp_send_entry(isp, na));
466 }
467 
468 int
469 isp_acknak_abts(ispsoftc_t *isp, void *arg, int errno)
470 {
471 	char storage[QENTRY_LEN];
472 	uint16_t tmpw;
473 	uint8_t tmpb;
474 	abts_t *abts = arg;
475 	abts_rsp_t *rsp = (abts_rsp_t *) storage;
476 
477 	if (abts->abts_header.rqs_entry_type != RQSTYPE_ABTS_RCVD) {
478 		isp_prt(isp, ISP_LOGERR, "%s: called for non-ABTS entry (0x%x)", __func__, abts->abts_header.rqs_entry_type);
479 		return (0);
480 	}
481 
482 	ISP_MEMCPY(rsp, abts, QENTRY_LEN);
483 	rsp->abts_rsp_header.rqs_entry_type = RQSTYPE_ABTS_RSP;
484 
485 	/*
486 	 * Swap destination and source for response.
487 	 */
488 	rsp->abts_rsp_r_ctl = BA_ACC;
489 	tmpw = rsp->abts_rsp_did_lo;
490 	tmpb = rsp->abts_rsp_did_hi;
491 	rsp->abts_rsp_did_lo = rsp->abts_rsp_sid_lo;
492 	rsp->abts_rsp_did_hi = rsp->abts_rsp_sid_hi;
493 	rsp->abts_rsp_sid_lo = tmpw;
494 	rsp->abts_rsp_sid_hi = tmpb;
495 
496 	rsp->abts_rsp_f_ctl_hi ^= 0x80; 	/* invert Exchange Context */
497 	rsp->abts_rsp_f_ctl_hi &= ~0x7f;	/* clear Sequence Initiator and other bits */
498 	rsp->abts_rsp_f_ctl_hi |= 0x10;		/* abort the whole exchange */
499 	rsp->abts_rsp_f_ctl_hi |= 0x8;		/* last data frame of sequence */
500 	rsp->abts_rsp_f_ctl_hi |= 0x1;		/* transfer Sequence Initiative */
501 	rsp->abts_rsp_f_ctl_lo = 0;
502 
503 	if (errno == 0) {
504 		uint16_t rx_id, ox_id;
505 
506 		rx_id = rsp->abts_rsp_rx_id;
507 		ox_id = rsp->abts_rsp_ox_id;
508 		ISP_MEMZERO(&rsp->abts_rsp_payload.ba_acc, sizeof (rsp->abts_rsp_payload.ba_acc));
509                 isp_prt(isp, ISP_LOGTINFO, "[0x%x] ABTS of 0x%x being BA_ACC'd", rsp->abts_rsp_rxid_abts, rsp->abts_rsp_rxid_task);
510                 rsp->abts_rsp_payload.ba_acc.aborted_rx_id = rx_id;
511                 rsp->abts_rsp_payload.ba_acc.aborted_ox_id = ox_id;
512                 rsp->abts_rsp_payload.ba_acc.high_seq_cnt = 0xffff;
513 	} else {
514 		ISP_MEMZERO(&rsp->abts_rsp_payload.ba_rjt, sizeof (rsp->abts_rsp_payload.ba_acc));
515 		switch (errno) {
516 		case ENOMEM:
517 			rsp->abts_rsp_payload.ba_rjt.reason = 5;	/* Logical Unit Busy */
518 			break;
519 		default:
520 			rsp->abts_rsp_payload.ba_rjt.reason = 9;	/* Unable to perform command request */
521 			break;
522 		}
523 	}
524 	return (isp_send_entry(isp, rsp));
525 }
526 
527 static void
528 isp_handle_abts(ispsoftc_t *isp, abts_t *abts)
529 {
530 	isp_notify_t notify, *nt = &notify;
531 	fcportdb_t *lp;
532 	uint16_t chan;
533 	uint32_t sid, did;
534 
535 	did = (abts->abts_did_hi << 16) | abts->abts_did_lo;
536 	sid = (abts->abts_sid_hi << 16) | abts->abts_sid_lo;
537 	ISP_MEMZERO(nt, sizeof (isp_notify_t));
538 
539 	nt->nt_hba = isp;
540 	nt->nt_did = did;
541 	nt->nt_nphdl = abts->abts_nphdl;
542 	nt->nt_sid = sid;
543 	if (ISP_CAP_MULTI_ID(isp) && isp->isp_nchan > 1) {
544 		/* Channel has to be derived from D_ID */
545 		isp_find_chan_by_did(isp, did, &chan);
546 		if (chan == ISP_NOCHAN) {
547 			isp_prt(isp, ISP_LOGWARN,
548 			    "%s: D_ID 0x%x not found on any channel",
549 			    __func__, did);
550 			isp_acknak_abts(isp, abts, ENXIO);
551 			return;
552 		}
553 	} else
554 		chan = 0;
555 	nt->nt_tgt = FCPARAM(isp, chan)->isp_wwpn;
556 	if (isp_find_pdb_by_handle(isp, chan, abts->abts_nphdl, &lp))
557 		nt->nt_wwn = lp->port_wwn;
558 	else
559 		nt->nt_wwn = INI_ANY;
560 	nt->nt_lun = LUN_ANY;
561 	nt->nt_need_ack = 1;
562 	nt->nt_tagval = abts->abts_rxid_task;
563 	nt->nt_tagval |= (((uint64_t) abts->abts_rxid_abts) << 32);
564 	isp_prt(isp, ISP_LOGTINFO, "[0x%x] ABTS from N-Port handle 0x%x"
565 	    " Port 0x%06x for task 0x%x (rx_id 0x%04x ox_id 0x%04x)",
566 	    abts->abts_rxid_abts, abts->abts_nphdl, sid, abts->abts_rxid_task,
567 	    abts->abts_rx_id, abts->abts_ox_id);
568 	nt->nt_channel = chan;
569 	nt->nt_ncode = NT_ABORT_TASK;
570 	nt->nt_lreserved = abts;
571 	isp_async(isp, ISPASYNC_TARGET_NOTIFY, &notify);
572 }
573 
574 static void
575 isp_handle_ctio7(ispsoftc_t *isp, ct7_entry_t *ct)
576 {
577 	void *xs;
578 	int pl = ISP_LOGTDEBUG2;
579 	char *fmsg = NULL;
580 
581 	if (ct->ct_syshandle) {
582 		xs = isp_find_xs(isp, ct->ct_syshandle);
583 		if (xs == NULL) {
584 			pl = ISP_LOGALL;
585 		}
586 	} else {
587 		xs = NULL;
588 	}
589 
590 	switch (ct->ct_nphdl) {
591 	case CT7_BUS_ERROR:
592 		isp_prt(isp, ISP_LOGERR, "PCI DMA Bus Error");
593 		/* FALL Through */
594 	case CT7_DATA_OVER:
595 	case CT7_DATA_UNDER:
596 	case CT7_OK:
597 		/*
598 		 * There are generally 2 possibilities as to why we'd get
599 		 * this condition:
600 		 * 	We sent or received data.
601 		 * 	We sent status & command complete.
602 		 */
603 
604 		break;
605 
606 	case CT7_RESET:
607 		if (fmsg == NULL) {
608 			fmsg = "LIP Reset";
609 		}
610 		/*FALLTHROUGH*/
611 	case CT7_ABORTED:
612 		/*
613 		 * When an Abort message is received the firmware goes to
614 		 * Bus Free and returns all outstanding CTIOs with the status
615 		 * set, then sends us an Immediate Notify entry.
616 		 */
617 		if (fmsg == NULL) {
618 			fmsg = "ABORT";
619 		}
620 		isp_prt(isp, ISP_LOGTDEBUG0, "CTIO7 destroyed by %s: RX_ID=0x%x", fmsg, ct->ct_rxid);
621 		break;
622 
623 	case CT7_TIMEOUT:
624 		if (fmsg == NULL) {
625 			fmsg = "command";
626 		}
627 		isp_prt(isp, ISP_LOGWARN, "Firmware timed out on %s", fmsg);
628 		break;
629 
630 	case CT7_ERR:
631 		fmsg = "Completed with Error";
632 		/*FALLTHROUGH*/
633 	case CT7_LOGOUT:
634 		if (fmsg == NULL) {
635 			fmsg = "Port Logout";
636 		}
637 		/*FALLTHROUGH*/
638 	case CT7_PORTUNAVAIL:
639 		if (fmsg == NULL) {
640 			fmsg = "Port not available";
641 		}
642 		/*FALLTHROUGH*/
643 	case CT7_PORTCHANGED:
644 		if (fmsg == NULL) {
645 			fmsg = "Port Changed";
646 		}
647 		isp_prt(isp, ISP_LOGWARN, "CTIO returned by f/w- %s", fmsg);
648 		break;
649 
650 	case CT7_INVRXID:
651 		/*
652 		 * CTIO rejected by the firmware because an invalid RX_ID.
653 		 * Just print a message.
654 		 */
655 		isp_prt(isp, ISP_LOGWARN, "CTIO7 completed with Invalid RX_ID 0x%x", ct->ct_rxid);
656 		break;
657 
658 	case CT7_REASSY_ERR:
659 		isp_prt(isp, ISP_LOGWARN, "reassembly error");
660 		break;
661 
662 	case CT7_SRR:
663 		isp_prt(isp, ISP_LOGTDEBUG0, "SRR received");
664 		break;
665 
666 	default:
667 		isp_prt(isp, ISP_LOGERR, "Unknown CTIO7 status 0x%x", ct->ct_nphdl);
668 		break;
669 	}
670 
671 	if (xs == NULL) {
672 		/*
673 		 * There may be more than one CTIO for a data transfer,
674 		 * or this may be a status CTIO we're not monitoring.
675 		 *
676 		 * The assumption is that they'll all be returned in the
677 		 * order we got them.
678 		 */
679 		if (ct->ct_syshandle == 0) {
680 			if (ct->ct_flags & CT7_TERMINATE) {
681 				isp_prt(isp, ISP_LOGINFO, "termination of [RX_ID 0x%x] complete", ct->ct_rxid);
682 			} else if ((ct->ct_flags & CT7_SENDSTATUS) == 0) {
683 				isp_prt(isp, pl, "intermediate CTIO completed ok");
684 			} else {
685 				isp_prt(isp, pl, "unmonitored CTIO completed ok");
686 			}
687 		} else {
688 			isp_prt(isp, pl, "NO xs for CTIO (handle 0x%x) status 0x%x", ct->ct_syshandle, ct->ct_nphdl);
689 		}
690 	} else {
691 		ISP_DMAFREE(isp, xs);
692 		if (ct->ct_flags & CT7_SENDSTATUS) {
693 			/*
694 			 * Sent status and command complete.
695 			 *
696 			 * We're now really done with this command, so we
697 			 * punt to the platform dependent layers because
698 			 * only there can we do the appropriate command
699 			 * complete thread synchronization.
700 			 */
701 			isp_prt(isp, pl, "status CTIO complete");
702 		} else {
703 			/*
704 			 * Final CTIO completed. Release DMA resources and
705 			 * notify platform dependent layers.
706 			 */
707 			isp_prt(isp, pl, "data CTIO complete");
708 		}
709 		isp_async(isp, ISPASYNC_TARGET_ACTION, ct);
710 		/*
711 		 * The platform layer will destroy the handle if appropriate.
712 		 */
713 	}
714 }
715 
716 static void
717 isp_handle_notify_24xx(ispsoftc_t *isp, in_fcentry_24xx_t *inot)
718 {
719 	uint8_t chan;
720 	uint16_t nphdl, prli_options = 0;
721 	uint32_t portid;
722 	fcportdb_t *lp;
723 	char *msg = NULL;
724 	uint8_t *ptr = (uint8_t *)inot;
725 	uint64_t wwpn = INI_NONE, wwnn = INI_NONE;
726 	isp_notify_t notify;
727 	char buf[16];
728 
729 	nphdl = inot->in_nphdl;
730 	if (nphdl != NIL_HANDLE) {
731 		portid = inot->in_portid_hi << 16 | inot->in_portid_lo;
732 	} else {
733 		portid = PORT_ANY;
734 	}
735 
736 	chan = ISP_GET_VPIDX(isp, inot->in_vpidx);
737 	if (chan >= isp->isp_nchan &&
738 	    inot->in_status != IN24XX_LIP_RESET &&
739 	    inot->in_status != IN24XX_LINK_RESET &&
740 	    inot->in_status != IN24XX_LINK_FAILED) {
741 		isp_prt(isp, ISP_LOGWARN, "%s: Received INOT with status %x on VP %x",
742 		    __func__, inot->in_status, chan);
743 		isp_async(isp, ISPASYNC_TARGET_NOTIFY_ACK, inot);
744 		return;
745 	}
746 
747 	switch (inot->in_status) {
748 	case IN24XX_ELS_RCVD:
749 	{
750 		/*
751 		 * Note that we're just getting notification that an ELS was
752 		 * received (possibly with some associated information sent
753 		 * upstream).  This is *not* the same as being given the ELS
754 		 * frame to accept or reject.
755 		 */
756 		switch (inot->in_status_subcode) {
757 		case LOGO:
758 			msg = "LOGO";
759 			wwpn = be64dec(&ptr[IN24XX_PLOGI_WWPN_OFF]);
760 			isp_del_wwn_entry(isp, chan, wwpn, nphdl, portid);
761 			break;
762 		case PRLO:
763 			msg = "PRLO";
764 			break;
765 		case PLOGI:
766 			msg = "PLOGI";
767 			wwnn = be64dec(&ptr[IN24XX_PLOGI_WWNN_OFF]);
768 			wwpn = be64dec(&ptr[IN24XX_PLOGI_WWPN_OFF]);
769 			isp_add_wwn_entry(isp, chan, wwpn, wwnn,
770 			    nphdl, portid, prli_options);
771 			break;
772 		case PRLI:
773 			msg = "PRLI";
774 			prli_options = inot->in_prli_options;
775 			if (inot->in_flags & IN24XX_FLAG_PN_NN_VALID)
776 				wwnn = be64dec(&ptr[IN24XX_PRLI_WWNN_OFF]);
777 			wwpn = be64dec(&ptr[IN24XX_PRLI_WWPN_OFF]);
778 			isp_add_wwn_entry(isp, chan, wwpn, wwnn,
779 			    nphdl, portid, prli_options);
780 			break;
781 		case TPRLO:
782 			msg = "TPRLO";
783 			break;
784 		case PDISC:
785 			msg = "PDISC";
786 			break;
787 		case ADISC:
788 			msg = "ADISC";
789 			break;
790 		default:
791 			ISP_SNPRINTF(buf, sizeof (buf), "ELS 0x%x",
792 			    inot->in_status_subcode);
793 			msg = buf;
794 			break;
795 		}
796 		if (inot->in_flags & IN24XX_FLAG_PUREX_IOCB) {
797 			isp_prt(isp, ISP_LOGERR, "%s Chan %d ELS N-port handle %x"
798 			    " PortID 0x%06x marked as needing a PUREX response",
799 			    msg, chan, nphdl, portid);
800 			break;
801 		}
802 		isp_prt(isp, ISP_LOGTDEBUG0, "%s Chan %d ELS N-port handle %x"
803 		    " PortID 0x%06x RX_ID 0x%x OX_ID 0x%x", msg, chan, nphdl,
804 		    portid, inot->in_rxid, inot->in_oxid);
805 		isp_async(isp, ISPASYNC_TARGET_NOTIFY_ACK, inot);
806 		break;
807 	}
808 
809 	case IN24XX_PORT_LOGOUT:
810 		msg = "PORT LOGOUT";
811 		if (isp_find_pdb_by_handle(isp, chan, nphdl, &lp))
812 			isp_del_wwn_entry(isp, chan, lp->port_wwn, nphdl, lp->portid);
813 		/* FALLTHROUGH */
814 	case IN24XX_PORT_CHANGED:
815 		if (msg == NULL)
816 			msg = "PORT CHANGED";
817 		/* FALLTHROUGH */
818 	case IN24XX_LIP_RESET:
819 		if (msg == NULL)
820 			msg = "LIP RESET";
821 		isp_prt(isp, ISP_LOGINFO, "Chan %d %s (sub-status 0x%x) for "
822 		    "N-port handle 0x%x",
823 		    chan, msg, inot->in_status_subcode, nphdl);
824 
825 		/*
826 		 * All subcodes here are irrelevant. What is relevant
827 		 * is that we need to terminate all active commands from
828 		 * this initiator (known by N-port handle).
829 		 */
830 		/* XXX IMPLEMENT XXX */
831 		isp_async(isp, ISPASYNC_TARGET_NOTIFY_ACK, inot);
832 		break;
833 
834 	case IN24XX_SRR_RCVD:
835 #ifdef	ISP_TARGET_MODE
836 		ISP_MEMZERO(&notify, sizeof (isp_notify_t));
837 		notify.nt_hba = isp;
838 		notify.nt_wwn = INI_ANY;
839 		notify.nt_tgt = FCPARAM(isp, chan)->isp_wwpn;
840 		notify.nt_nphdl = nphdl;
841 		notify.nt_sid = portid;
842 		notify.nt_did = PORT_ANY;
843 		notify.nt_lun = LUN_ANY;
844 		notify.nt_tagval = inot->in_rxid;
845 		notify.nt_tagval |= ((uint64_t)inot->in_srr_rxid << 32);
846 		notify.nt_need_ack = 1;
847 		notify.nt_channel = chan;
848 		notify.nt_lreserved = inot;
849 		notify.nt_ncode = NT_SRR;
850 		isp_async(isp, ISPASYNC_TARGET_NOTIFY, &notify);
851 		break;
852 #else
853 		if (msg == NULL)
854 			msg = "SRR RCVD";
855 		/* FALLTHROUGH */
856 #endif
857 	case IN24XX_LINK_RESET:
858 		if (msg == NULL)
859 			msg = "LINK RESET";
860 	case IN24XX_LINK_FAILED:
861 		if (msg == NULL)
862 			msg = "LINK FAILED";
863 	default:
864 		isp_prt(isp, ISP_LOGWARN, "Chan %d %s", chan, msg);
865 		isp_async(isp, ISPASYNC_TARGET_NOTIFY_ACK, inot);
866 		break;
867 	}
868 }
869 #endif
870