xref: /freebsd/sys/dev/mpt/mpt.c (revision cb18cb4d7c7dc3f8cd49ec75495a8ed1d6607dbf)
1 /*-
2  * Generic routines for LSI Fusion adapters.
3  * FreeBSD Version.
4  *
5  * Copyright (c) 2000, 2001 by Greg Ansley
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice immediately at the beginning of the file, without modification,
12  *    this list of conditions, and the following disclaimer.
13  * 2. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 /*-
29  * Copyright (c) 2002, 2006 by Matthew Jacob
30  * All rights reserved.
31  *
32  * Redistribution and use in source and binary forms, with or without
33  * modification, are permitted provided that the following conditions are
34  * met:
35  * 1. Redistributions of source code must retain the above copyright
36  *    notice, this list of conditions and the following disclaimer.
37  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
38  *    substantially similar to the "NO WARRANTY" disclaimer below
39  *    ("Disclaimer") and any redistribution must be conditioned upon including
40  *    a substantially similar Disclaimer requirement for further binary
41  *    redistribution.
42  * 3. Neither the names of the above listed copyright holders nor the names
43  *    of any contributors may be used to endorse or promote products derived
44  *    from this software without specific prior written permission.
45  *
46  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
47  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
50  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
51  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
52  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
53  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
54  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
55  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
56  * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
57  *
58  * Support from Chris Ellsworth in order to make SAS adapters work
59  * is gratefully acknowledged.
60  *
61  *
62  * Support from LSI-Logic has also gone a great deal toward making this a
63  * workable subsystem and is gratefully acknowledged.
64  */
65 /*-
66  * Copyright (c) 2004, Avid Technology, Inc. and its contributors.
67  * Copyright (c) 2005, WHEEL Sp. z o.o.
68  * Copyright (c) 2004, 2005 Justin T. Gibbs
69  * All rights reserved.
70  *
71  * Redistribution and use in source and binary forms, with or without
72  * modification, are permitted provided that the following conditions are
73  * met:
74  * 1. Redistributions of source code must retain the above copyright
75  *    notice, this list of conditions and the following disclaimer.
76  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
77  *    substantially similar to the "NO WARRANTY" disclaimer below
78  *    ("Disclaimer") and any redistribution must be conditioned upon including
79  *    a substantially similar Disclaimer requirement for further binary
80  *    redistribution.
81  * 3. Neither the names of the above listed copyright holders nor the names
82  *    of any contributors may be used to endorse or promote products derived
83  *    from this software without specific prior written permission.
84  *
85  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
86  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
87  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
88  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
89  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
90  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
91  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
92  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
93  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
94  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
95  * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
96  */
97 
98 #include <sys/cdefs.h>
99 __FBSDID("$FreeBSD$");
100 
101 #include <dev/mpt/mpt.h>
102 #include <dev/mpt/mpt_cam.h> /* XXX For static handler registration */
103 #include <dev/mpt/mpt_raid.h> /* XXX For static handler registration */
104 
105 #include <dev/mpt/mpilib/mpi.h>
106 #include <dev/mpt/mpilib/mpi_ioc.h>
107 #include <dev/mpt/mpilib/mpi_fc.h>
108 #include <dev/mpt/mpilib/mpi_targ.h>
109 
110 #include <sys/sysctl.h>
111 
112 #define MPT_MAX_TRYS 3
113 #define MPT_MAX_WAIT 300000
114 
115 static int maxwait_ack = 0;
116 static int maxwait_int = 0;
117 static int maxwait_state = 0;
118 
119 static TAILQ_HEAD(, mpt_softc)	mpt_tailq = TAILQ_HEAD_INITIALIZER(mpt_tailq);
120 mpt_reply_handler_t *mpt_reply_handlers[MPT_NUM_REPLY_HANDLERS];
121 
122 static mpt_reply_handler_t mpt_default_reply_handler;
123 static mpt_reply_handler_t mpt_config_reply_handler;
124 static mpt_reply_handler_t mpt_handshake_reply_handler;
125 static mpt_reply_handler_t mpt_event_reply_handler;
126 static void mpt_send_event_ack(struct mpt_softc *mpt, request_t *ack_req,
127 			       MSG_EVENT_NOTIFY_REPLY *msg, uint32_t context);
128 static int mpt_send_event_request(struct mpt_softc *mpt, int onoff);
129 static int mpt_soft_reset(struct mpt_softc *mpt);
130 static void mpt_hard_reset(struct mpt_softc *mpt);
131 static void mpt_dma_buf_free(struct mpt_softc *mpt);
132 static int mpt_configure_ioc(struct mpt_softc *mpt, int, int);
133 static int mpt_enable_ioc(struct mpt_softc *mpt, int);
134 
135 /************************* Personality Module Support *************************/
136 /*
137  * We include one extra entry that is guaranteed to be NULL
138  * to simplify our itterator.
139  */
140 static struct mpt_personality *mpt_personalities[MPT_MAX_PERSONALITIES + 1];
141 static __inline struct mpt_personality*
142 	mpt_pers_find(struct mpt_softc *, u_int);
143 static __inline struct mpt_personality*
144 	mpt_pers_find_reverse(struct mpt_softc *, u_int);
145 
146 static __inline struct mpt_personality *
147 mpt_pers_find(struct mpt_softc *mpt, u_int start_at)
148 {
149 	KASSERT(start_at <= MPT_MAX_PERSONALITIES,
150 		("mpt_pers_find: starting position out of range\n"));
151 
152 	while (start_at < MPT_MAX_PERSONALITIES
153 	    && (mpt->mpt_pers_mask & (0x1 << start_at)) == 0) {
154 		start_at++;
155 	}
156 	return (mpt_personalities[start_at]);
157 }
158 
159 /*
160  * Used infrequently, so no need to optimize like a forward
161  * traversal where we use the MAX+1 is guaranteed to be NULL
162  * trick.
163  */
164 static __inline struct mpt_personality *
165 mpt_pers_find_reverse(struct mpt_softc *mpt, u_int start_at)
166 {
167 	while (start_at < MPT_MAX_PERSONALITIES
168 	    && (mpt->mpt_pers_mask & (0x1 << start_at)) == 0) {
169 		start_at--;
170 	}
171 	if (start_at < MPT_MAX_PERSONALITIES)
172 		return (mpt_personalities[start_at]);
173 	return (NULL);
174 }
175 
176 #define MPT_PERS_FOREACH(mpt, pers)				\
177 	for (pers = mpt_pers_find(mpt, /*start_at*/0);		\
178 	     pers != NULL;					\
179 	     pers = mpt_pers_find(mpt, /*start_at*/pers->id+1))
180 
181 #define MPT_PERS_FOREACH_REVERSE(mpt, pers)				\
182 	for (pers = mpt_pers_find_reverse(mpt, MPT_MAX_PERSONALITIES-1);\
183 	     pers != NULL;						\
184 	     pers = mpt_pers_find_reverse(mpt, /*start_at*/pers->id-1))
185 
186 static mpt_load_handler_t      mpt_stdload;
187 static mpt_probe_handler_t     mpt_stdprobe;
188 static mpt_attach_handler_t    mpt_stdattach;
189 static mpt_enable_handler_t    mpt_stdenable;
190 static mpt_ready_handler_t     mpt_stdready;
191 static mpt_event_handler_t     mpt_stdevent;
192 static mpt_reset_handler_t     mpt_stdreset;
193 static mpt_shutdown_handler_t  mpt_stdshutdown;
194 static mpt_detach_handler_t    mpt_stddetach;
195 static mpt_unload_handler_t    mpt_stdunload;
196 static struct mpt_personality mpt_default_personality =
197 {
198 	.load		= mpt_stdload,
199 	.probe		= mpt_stdprobe,
200 	.attach		= mpt_stdattach,
201 	.enable		= mpt_stdenable,
202 	.ready		= mpt_stdready,
203 	.event		= mpt_stdevent,
204 	.reset		= mpt_stdreset,
205 	.shutdown	= mpt_stdshutdown,
206 	.detach		= mpt_stddetach,
207 	.unload		= mpt_stdunload
208 };
209 
210 static mpt_load_handler_t      mpt_core_load;
211 static mpt_attach_handler_t    mpt_core_attach;
212 static mpt_enable_handler_t    mpt_core_enable;
213 static mpt_reset_handler_t     mpt_core_ioc_reset;
214 static mpt_event_handler_t     mpt_core_event;
215 static mpt_shutdown_handler_t  mpt_core_shutdown;
216 static mpt_shutdown_handler_t  mpt_core_detach;
217 static mpt_unload_handler_t    mpt_core_unload;
218 static struct mpt_personality mpt_core_personality =
219 {
220 	.name		= "mpt_core",
221 	.load		= mpt_core_load,
222 //	.attach		= mpt_core_attach,
223 //	.enable		= mpt_core_enable,
224 	.event		= mpt_core_event,
225 	.reset		= mpt_core_ioc_reset,
226 	.shutdown	= mpt_core_shutdown,
227 	.detach		= mpt_core_detach,
228 	.unload		= mpt_core_unload,
229 };
230 
231 /*
232  * Manual declaration so that DECLARE_MPT_PERSONALITY doesn't need
233  * ordering information.  We want the core to always register FIRST.
234  * other modules are set to SI_ORDER_SECOND.
235  */
236 static moduledata_t mpt_core_mod = {
237 	"mpt_core", mpt_modevent, &mpt_core_personality
238 };
239 DECLARE_MODULE(mpt_core, mpt_core_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
240 MODULE_VERSION(mpt_core, 1);
241 
242 #define MPT_PERS_ATTACHED(pers, mpt) ((mpt)->mpt_pers_mask & (0x1 << pers->id))
243 
244 int
245 mpt_modevent(module_t mod, int type, void *data)
246 {
247 	struct mpt_personality *pers;
248 	int error;
249 
250 	pers = (struct mpt_personality *)data;
251 
252 	error = 0;
253 	switch (type) {
254 	case MOD_LOAD:
255 	{
256 		mpt_load_handler_t **def_handler;
257 		mpt_load_handler_t **pers_handler;
258 		int i;
259 
260 		for (i = 0; i < MPT_MAX_PERSONALITIES; i++) {
261 			if (mpt_personalities[i] == NULL)
262 				break;
263 		}
264 		if (i >= MPT_MAX_PERSONALITIES) {
265 			error = ENOMEM;
266 			break;
267 		}
268 		pers->id = i;
269 		mpt_personalities[i] = pers;
270 
271 		/* Install standard/noop handlers for any NULL entries. */
272 		def_handler = MPT_PERS_FIRST_HANDLER(&mpt_default_personality);
273 		pers_handler = MPT_PERS_FIRST_HANDLER(pers);
274 		while (pers_handler <= MPT_PERS_LAST_HANDLER(pers)) {
275 			if (*pers_handler == NULL)
276 				*pers_handler = *def_handler;
277 			pers_handler++;
278 			def_handler++;
279 		}
280 
281 		error = (pers->load(pers));
282 		if (error != 0)
283 			mpt_personalities[i] = NULL;
284 		break;
285 	}
286 	case MOD_SHUTDOWN:
287 		break;
288 #if __FreeBSD_version >= 500000
289 	case MOD_QUIESCE:
290 		break;
291 #endif
292 	case MOD_UNLOAD:
293 		error = pers->unload(pers);
294 		mpt_personalities[pers->id] = NULL;
295 		break;
296 	default:
297 		error = EINVAL;
298 		break;
299 	}
300 	return (error);
301 }
302 
303 int
304 mpt_stdload(struct mpt_personality *pers)
305 {
306 	/* Load is always successfull. */
307 	return (0);
308 }
309 
310 int
311 mpt_stdprobe(struct mpt_softc *mpt)
312 {
313 	/* Probe is always successfull. */
314 	return (0);
315 }
316 
317 int
318 mpt_stdattach(struct mpt_softc *mpt)
319 {
320 	/* Attach is always successfull. */
321 	return (0);
322 }
323 
324 int
325 mpt_stdenable(struct mpt_softc *mpt)
326 {
327 	/* Enable is always successfull. */
328 	return (0);
329 }
330 
331 void
332 mpt_stdready(struct mpt_softc *mpt)
333 {
334 }
335 
336 
337 int
338 mpt_stdevent(struct mpt_softc *mpt, request_t *req, MSG_EVENT_NOTIFY_REPLY *msg)
339 {
340 	mpt_lprt(mpt, MPT_PRT_DEBUG, "mpt_stdevent: 0x%x\n", msg->Event & 0xFF);
341 	/* Event was not for us. */
342 	return (0);
343 }
344 
345 void
346 mpt_stdreset(struct mpt_softc *mpt, int type)
347 {
348 }
349 
350 void
351 mpt_stdshutdown(struct mpt_softc *mpt)
352 {
353 }
354 
355 void
356 mpt_stddetach(struct mpt_softc *mpt)
357 {
358 }
359 
360 int
361 mpt_stdunload(struct mpt_personality *pers)
362 {
363 	/* Unload is always successfull. */
364 	return (0);
365 }
366 
367 /*
368  * Post driver attachment, we may want to perform some global actions.
369  * Here is the hook to do so.
370  */
371 
372 static void
373 mpt_postattach(void *unused)
374 {
375 	struct mpt_softc *mpt;
376 	struct mpt_personality *pers;
377 
378 	TAILQ_FOREACH(mpt, &mpt_tailq, links) {
379 		MPT_PERS_FOREACH(mpt, pers)
380 			pers->ready(mpt);
381 	}
382 }
383 SYSINIT(mptdev, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE, mpt_postattach, NULL);
384 
385 
386 /******************************* Bus DMA Support ******************************/
387 void
388 mpt_map_rquest(void *arg, bus_dma_segment_t *segs, int nseg, int error)
389 {
390 	struct mpt_map_info *map_info;
391 
392 	map_info = (struct mpt_map_info *)arg;
393 	map_info->error = error;
394 	map_info->phys = segs->ds_addr;
395 }
396 
397 /**************************** Reply/Event Handling ****************************/
398 int
399 mpt_register_handler(struct mpt_softc *mpt, mpt_handler_type type,
400 		     mpt_handler_t handler, uint32_t *phandler_id)
401 {
402 
403 	switch (type) {
404 	case MPT_HANDLER_REPLY:
405 	{
406 		u_int cbi;
407 		u_int free_cbi;
408 
409 		if (phandler_id == NULL)
410 			return (EINVAL);
411 
412 		free_cbi = MPT_HANDLER_ID_NONE;
413 		for (cbi = 0; cbi < MPT_NUM_REPLY_HANDLERS; cbi++) {
414 			/*
415 			 * If the same handler is registered multiple
416 			 * times, don't error out.  Just return the
417 			 * index of the original registration.
418 			 */
419 			if (mpt_reply_handlers[cbi] == handler.reply_handler) {
420 				*phandler_id = MPT_CBI_TO_HID(cbi);
421 				return (0);
422 			}
423 
424 			/*
425 			 * Fill from the front in the hope that
426 			 * all registered handlers consume only a
427 			 * single cache line.
428 			 *
429 			 * We don't break on the first empty slot so
430 			 * that the full table is checked to see if
431 			 * this handler was previously registered.
432 			 */
433 			if (free_cbi == MPT_HANDLER_ID_NONE &&
434 			    (mpt_reply_handlers[cbi]
435 			  == mpt_default_reply_handler))
436 				free_cbi = cbi;
437 		}
438 		if (free_cbi == MPT_HANDLER_ID_NONE) {
439 			return (ENOMEM);
440 		}
441 		mpt_reply_handlers[free_cbi] = handler.reply_handler;
442 		*phandler_id = MPT_CBI_TO_HID(free_cbi);
443 		break;
444 	}
445 	default:
446 		mpt_prt(mpt, "mpt_register_handler unknown type %d\n", type);
447 		return (EINVAL);
448 	}
449 	return (0);
450 }
451 
452 int
453 mpt_deregister_handler(struct mpt_softc *mpt, mpt_handler_type type,
454 		       mpt_handler_t handler, uint32_t handler_id)
455 {
456 
457 	switch (type) {
458 	case MPT_HANDLER_REPLY:
459 	{
460 		u_int cbi;
461 
462 		cbi = MPT_CBI(handler_id);
463 		if (cbi >= MPT_NUM_REPLY_HANDLERS
464 		 || mpt_reply_handlers[cbi] != handler.reply_handler)
465 			return (ENOENT);
466 		mpt_reply_handlers[cbi] = mpt_default_reply_handler;
467 		break;
468 	}
469 	default:
470 		mpt_prt(mpt, "mpt_deregister_handler unknown type %d\n", type);
471 		return (EINVAL);
472 	}
473 	return (0);
474 }
475 
476 static int
477 mpt_default_reply_handler(struct mpt_softc *mpt, request_t *req,
478 	uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame)
479 {
480 	mpt_prt(mpt,
481 	    "Default Handler Called: req=%p:%u reply_descriptor=%x frame=%p\n",
482 	    req, req->serno, reply_desc, reply_frame);
483 
484 	if (reply_frame != NULL)
485 		mpt_dump_reply_frame(mpt, reply_frame);
486 
487 	mpt_prt(mpt, "Reply Frame Ignored\n");
488 
489 	return (/*free_reply*/TRUE);
490 }
491 
492 static int
493 mpt_config_reply_handler(struct mpt_softc *mpt, request_t *req,
494  uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame)
495 {
496 	if (req != NULL) {
497 
498 		if (reply_frame != NULL) {
499 			MSG_CONFIG *cfgp;
500 			MSG_CONFIG_REPLY *reply;
501 
502 			cfgp = (MSG_CONFIG *)req->req_vbuf;
503 			reply = (MSG_CONFIG_REPLY *)reply_frame;
504 			req->IOCStatus = le16toh(reply_frame->IOCStatus);
505 			bcopy(&reply->Header, &cfgp->Header,
506 			      sizeof(cfgp->Header));
507 			cfgp->ExtPageLength = reply->ExtPageLength;
508 			cfgp->ExtPageType = reply->ExtPageType;
509 		}
510 		req->state &= ~REQ_STATE_QUEUED;
511 		req->state |= REQ_STATE_DONE;
512 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
513 		if ((req->state & REQ_STATE_NEED_WAKEUP) != 0) {
514 			wakeup(req);
515 		} else if ((req->state & REQ_STATE_TIMEDOUT) != 0) {
516 			/*
517 			 * Whew- we can free this request (late completion)
518 			 */
519 			mpt_free_request(mpt, req);
520 		}
521 	}
522 
523 	return (TRUE);
524 }
525 
526 static int
527 mpt_handshake_reply_handler(struct mpt_softc *mpt, request_t *req,
528  uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame)
529 {
530 	/* Nothing to be done. */
531 	return (TRUE);
532 }
533 
534 static int
535 mpt_event_reply_handler(struct mpt_softc *mpt, request_t *req,
536     uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame)
537 {
538 	int free_reply;
539 
540 	KASSERT(reply_frame != NULL, ("null reply in mpt_event_reply_handler"));
541 	KASSERT(req != NULL, ("null request in mpt_event_reply_handler"));
542 
543 	free_reply = TRUE;
544 	switch (reply_frame->Function) {
545 	case MPI_FUNCTION_EVENT_NOTIFICATION:
546 	{
547 		MSG_EVENT_NOTIFY_REPLY *msg;
548 		struct mpt_personality *pers;
549 		u_int handled;
550 
551 		handled = 0;
552 		msg = (MSG_EVENT_NOTIFY_REPLY *)reply_frame;
553 		msg->EventDataLength = le16toh(msg->EventDataLength);
554 		msg->IOCStatus = le16toh(msg->IOCStatus);
555 		msg->IOCLogInfo = le32toh(msg->IOCLogInfo);
556 		msg->Event = le32toh(msg->Event);
557 		MPT_PERS_FOREACH(mpt, pers)
558 			handled += pers->event(mpt, req, msg);
559 
560 		if (handled == 0 && mpt->mpt_pers_mask == 0) {
561 			mpt_lprt(mpt, MPT_PRT_INFO,
562 				"No Handlers For Any Event Notify Frames. "
563 				"Event %#x (ACK %sequired).\n",
564 				msg->Event, msg->AckRequired? "r" : "not r");
565 		} else if (handled == 0) {
566 			mpt_lprt(mpt,
567 				msg->AckRequired? MPT_PRT_WARN : MPT_PRT_INFO,
568 				"Unhandled Event Notify Frame. Event %#x "
569 				"(ACK %sequired).\n",
570 				msg->Event, msg->AckRequired? "r" : "not r");
571 		}
572 
573 		if (msg->AckRequired) {
574 			request_t *ack_req;
575 			uint32_t context;
576 
577 			context = req->index | MPT_REPLY_HANDLER_EVENTS;
578 			ack_req = mpt_get_request(mpt, FALSE);
579 			if (ack_req == NULL) {
580 				struct mpt_evtf_record *evtf;
581 
582 				evtf = (struct mpt_evtf_record *)reply_frame;
583 				evtf->context = context;
584 				LIST_INSERT_HEAD(&mpt->ack_frames, evtf, links);
585 				free_reply = FALSE;
586 				break;
587 			}
588 			mpt_send_event_ack(mpt, ack_req, msg, context);
589 			/*
590 			 * Don't check for CONTINUATION_REPLY here
591 			 */
592 			return (free_reply);
593 		}
594 		break;
595 	}
596 	case MPI_FUNCTION_PORT_ENABLE:
597 		mpt_lprt(mpt, MPT_PRT_DEBUG , "enable port reply\n");
598 		break;
599 	case MPI_FUNCTION_EVENT_ACK:
600 		break;
601 	default:
602 		mpt_prt(mpt, "unknown event function: %x\n",
603 			reply_frame->Function);
604 		break;
605 	}
606 
607 	/*
608 	 * I'm not sure that this continuation stuff works as it should.
609 	 *
610 	 * I've had FC async events occur that free the frame up because
611 	 * the continuation bit isn't set, and then additional async events
612 	 * then occur using the same context. As you might imagine, this
613 	 * leads to Very Bad Thing.
614 	 *
615 	 *  Let's just be safe for now and not free them up until we figure
616 	 * out what's actually happening here.
617 	 */
618 #if	0
619 	if ((reply_frame->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY) == 0) {
620 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
621 		mpt_free_request(mpt, req);
622 		mpt_prt(mpt, "event_reply %x for req %p:%u NOT a continuation",
623 		    reply_frame->Function, req, req->serno);
624 		if (reply_frame->Function == MPI_FUNCTION_EVENT_NOTIFICATION) {
625 			MSG_EVENT_NOTIFY_REPLY *msg =
626 			    (MSG_EVENT_NOTIFY_REPLY *)reply_frame;
627 			mpt_prtc(mpt, " Event=0x%x AckReq=%d",
628 			    msg->Event, msg->AckRequired);
629 		}
630 	} else {
631 		mpt_prt(mpt, "event_reply %x for %p:%u IS a continuation",
632 		    reply_frame->Function, req, req->serno);
633 		if (reply_frame->Function == MPI_FUNCTION_EVENT_NOTIFICATION) {
634 			MSG_EVENT_NOTIFY_REPLY *msg =
635 			    (MSG_EVENT_NOTIFY_REPLY *)reply_frame;
636 			mpt_prtc(mpt, " Event=0x%x AckReq=%d",
637 			    msg->Event, msg->AckRequired);
638 		}
639 		mpt_prtc(mpt, "\n");
640 	}
641 #endif
642 	return (free_reply);
643 }
644 
645 /*
646  * Process an asynchronous event from the IOC.
647  */
648 static int
649 mpt_core_event(struct mpt_softc *mpt, request_t *req,
650 	       MSG_EVENT_NOTIFY_REPLY *msg)
651 {
652 	mpt_lprt(mpt, MPT_PRT_DEBUG, "mpt_core_event: 0x%x\n",
653                  msg->Event & 0xFF);
654 	switch(msg->Event & 0xFF) {
655 	case MPI_EVENT_NONE:
656 		break;
657 	case MPI_EVENT_LOG_DATA:
658 	{
659 		int i;
660 
661 		/* Some error occured that LSI wants logged */
662 		mpt_prt(mpt, "EvtLogData: IOCLogInfo: 0x%08x\n",
663 			msg->IOCLogInfo);
664 		mpt_prt(mpt, "\tEvtLogData: Event Data:");
665 		for (i = 0; i < msg->EventDataLength; i++)
666 			mpt_prtc(mpt, "  %08x", msg->Data[i]);
667 		mpt_prtc(mpt, "\n");
668 		break;
669 	}
670 	case MPI_EVENT_EVENT_CHANGE:
671 		/*
672 		 * This is just an acknowledgement
673 		 * of our mpt_send_event_request.
674 		 */
675 		break;
676 	case MPI_EVENT_SAS_DEVICE_STATUS_CHANGE:
677 		break;
678 	default:
679 		return (0);
680 		break;
681 	}
682 	return (1);
683 }
684 
685 static void
686 mpt_send_event_ack(struct mpt_softc *mpt, request_t *ack_req,
687 		   MSG_EVENT_NOTIFY_REPLY *msg, uint32_t context)
688 {
689 	MSG_EVENT_ACK *ackp;
690 
691 	ackp = (MSG_EVENT_ACK *)ack_req->req_vbuf;
692 	memset(ackp, 0, sizeof (*ackp));
693 	ackp->Function = MPI_FUNCTION_EVENT_ACK;
694 	ackp->Event = htole32(msg->Event);
695 	ackp->EventContext = htole32(msg->EventContext);
696 	ackp->MsgContext = htole32(context);
697 	mpt_check_doorbell(mpt);
698 	mpt_send_cmd(mpt, ack_req);
699 }
700 
701 /***************************** Interrupt Handling *****************************/
702 void
703 mpt_intr(void *arg)
704 {
705 	struct mpt_softc *mpt;
706 	uint32_t reply_desc;
707 	int ntrips = 0;
708 
709 	mpt = (struct mpt_softc *)arg;
710 	mpt_lprt(mpt, MPT_PRT_DEBUG2, "enter mpt_intr\n");
711 	MPT_LOCK_ASSERT(mpt);
712 
713 	while ((reply_desc = mpt_pop_reply_queue(mpt)) != MPT_REPLY_EMPTY) {
714 		request_t	  *req;
715 		MSG_DEFAULT_REPLY *reply_frame;
716 		uint32_t	   reply_baddr;
717 		uint32_t           ctxt_idx;
718 		u_int		   cb_index;
719 		u_int		   req_index;
720 		int		   free_rf;
721 
722 		req = NULL;
723 		reply_frame = NULL;
724 		reply_baddr = 0;
725 		if ((reply_desc & MPI_ADDRESS_REPLY_A_BIT) != 0) {
726 			u_int offset;
727 			/*
728 			 * Insure that the reply frame is coherent.
729 			 */
730 			reply_baddr = MPT_REPLY_BADDR(reply_desc);
731 			offset = reply_baddr - (mpt->reply_phys & 0xFFFFFFFF);
732 			bus_dmamap_sync_range(mpt->reply_dmat,
733 			    mpt->reply_dmap, offset, MPT_REPLY_SIZE,
734 			    BUS_DMASYNC_POSTREAD);
735 			reply_frame = MPT_REPLY_OTOV(mpt, offset);
736 			ctxt_idx = le32toh(reply_frame->MsgContext);
737 		} else {
738 			uint32_t type;
739 
740 			type = MPI_GET_CONTEXT_REPLY_TYPE(reply_desc);
741 			ctxt_idx = reply_desc;
742 			mpt_lprt(mpt, MPT_PRT_DEBUG1, "Context Reply: 0x%08x\n",
743 				    reply_desc);
744 
745 			switch (type) {
746 			case MPI_CONTEXT_REPLY_TYPE_SCSI_INIT:
747 				ctxt_idx &= MPI_CONTEXT_REPLY_CONTEXT_MASK;
748 				break;
749 			case MPI_CONTEXT_REPLY_TYPE_SCSI_TARGET:
750 				ctxt_idx = GET_IO_INDEX(reply_desc);
751 				if (mpt->tgt_cmd_ptrs == NULL) {
752 					mpt_prt(mpt,
753 					    "mpt_intr: no target cmd ptrs\n");
754 					reply_desc = MPT_REPLY_EMPTY;
755 					break;
756 				}
757 				if (ctxt_idx >= mpt->tgt_cmds_allocated) {
758 					mpt_prt(mpt,
759 					    "mpt_intr: bad tgt cmd ctxt %u\n",
760 					    ctxt_idx);
761 					reply_desc = MPT_REPLY_EMPTY;
762 					ntrips = 1000;
763 					break;
764 				}
765 				req = mpt->tgt_cmd_ptrs[ctxt_idx];
766 				if (req == NULL) {
767 					mpt_prt(mpt, "no request backpointer "
768 					    "at index %u", ctxt_idx);
769 					reply_desc = MPT_REPLY_EMPTY;
770 					ntrips = 1000;
771 					break;
772 				}
773 				/*
774 				 * Reformulate ctxt_idx to be just as if
775 				 * it were another type of context reply
776 				 * so the code below will find the request
777 				 * via indexing into the pool.
778 				 */
779 				ctxt_idx =
780 				    req->index | mpt->scsi_tgt_handler_id;
781 				req = NULL;
782 				break;
783 			case MPI_CONTEXT_REPLY_TYPE_LAN:
784 				mpt_prt(mpt, "LAN CONTEXT REPLY: 0x%08x\n",
785 				    reply_desc);
786 				reply_desc = MPT_REPLY_EMPTY;
787 				break;
788 			default:
789 				mpt_prt(mpt, "Context Reply 0x%08x?\n", type);
790 				reply_desc = MPT_REPLY_EMPTY;
791 				break;
792 			}
793 			if (reply_desc == MPT_REPLY_EMPTY) {
794 				if (ntrips++ > 1000) {
795 					break;
796 				}
797 				continue;
798 			}
799 		}
800 
801 		cb_index = MPT_CONTEXT_TO_CBI(ctxt_idx);
802 		req_index = MPT_CONTEXT_TO_REQI(ctxt_idx);
803 		if (req_index < MPT_MAX_REQUESTS(mpt)) {
804 			req = &mpt->request_pool[req_index];
805 		} else {
806 			mpt_prt(mpt, "WARN: mpt_intr index == %d (reply_desc =="
807 			    " 0x%x)\n", req_index, reply_desc);
808 		}
809 
810 		free_rf = mpt_reply_handlers[cb_index](mpt, req,
811 		    reply_desc, reply_frame);
812 
813 		if (reply_frame != NULL && free_rf) {
814 			mpt_free_reply(mpt, reply_baddr);
815 		}
816 
817 		/*
818 		 * If we got ourselves disabled, don't get stuck in a loop
819 		 */
820 		if (mpt->disabled) {
821 			mpt_disable_ints(mpt);
822 			break;
823 		}
824 		if (ntrips++ > 1000) {
825 			break;
826 		}
827 	}
828 	mpt_lprt(mpt, MPT_PRT_DEBUG2, "exit mpt_intr\n");
829 }
830 
831 /******************************* Error Recovery *******************************/
832 void
833 mpt_complete_request_chain(struct mpt_softc *mpt, struct req_queue *chain,
834 			    u_int iocstatus)
835 {
836 	MSG_DEFAULT_REPLY  ioc_status_frame;
837 	request_t	  *req;
838 
839 	memset(&ioc_status_frame, 0, sizeof(ioc_status_frame));
840 	ioc_status_frame.MsgLength = roundup2(sizeof(ioc_status_frame), 4);
841 	ioc_status_frame.IOCStatus = iocstatus;
842 	while((req = TAILQ_FIRST(chain)) != NULL) {
843 		MSG_REQUEST_HEADER *msg_hdr;
844 		u_int		    cb_index;
845 
846 		TAILQ_REMOVE(chain, req, links);
847 		msg_hdr = (MSG_REQUEST_HEADER *)req->req_vbuf;
848 		ioc_status_frame.Function = msg_hdr->Function;
849 		ioc_status_frame.MsgContext = msg_hdr->MsgContext;
850 		cb_index = MPT_CONTEXT_TO_CBI(le32toh(msg_hdr->MsgContext));
851 		mpt_reply_handlers[cb_index](mpt, req, msg_hdr->MsgContext,
852 		    &ioc_status_frame);
853 	}
854 }
855 
856 /********************************* Diagnostics ********************************/
857 /*
858  * Perform a diagnostic dump of a reply frame.
859  */
860 void
861 mpt_dump_reply_frame(struct mpt_softc *mpt, MSG_DEFAULT_REPLY *reply_frame)
862 {
863 	mpt_prt(mpt, "Address Reply:\n");
864 	mpt_print_reply(reply_frame);
865 }
866 
867 /******************************* Doorbell Access ******************************/
868 static __inline uint32_t mpt_rd_db(struct mpt_softc *mpt);
869 static __inline  uint32_t mpt_rd_intr(struct mpt_softc *mpt);
870 
871 static __inline uint32_t
872 mpt_rd_db(struct mpt_softc *mpt)
873 {
874 	return mpt_read(mpt, MPT_OFFSET_DOORBELL);
875 }
876 
877 static __inline uint32_t
878 mpt_rd_intr(struct mpt_softc *mpt)
879 {
880 	return mpt_read(mpt, MPT_OFFSET_INTR_STATUS);
881 }
882 
883 /* Busy wait for a door bell to be read by IOC */
884 static int
885 mpt_wait_db_ack(struct mpt_softc *mpt)
886 {
887 	int i;
888 	for (i=0; i < MPT_MAX_WAIT; i++) {
889 		if (!MPT_DB_IS_BUSY(mpt_rd_intr(mpt))) {
890 			maxwait_ack = i > maxwait_ack ? i : maxwait_ack;
891 			return (MPT_OK);
892 		}
893 		DELAY(200);
894 	}
895 	return (MPT_FAIL);
896 }
897 
898 /* Busy wait for a door bell interrupt */
899 static int
900 mpt_wait_db_int(struct mpt_softc *mpt)
901 {
902 	int i;
903 	for (i = 0; i < MPT_MAX_WAIT; i++) {
904 		if (MPT_DB_INTR(mpt_rd_intr(mpt))) {
905 			maxwait_int = i > maxwait_int ? i : maxwait_int;
906 			return MPT_OK;
907 		}
908 		DELAY(100);
909 	}
910 	return (MPT_FAIL);
911 }
912 
913 /* Wait for IOC to transition to a give state */
914 void
915 mpt_check_doorbell(struct mpt_softc *mpt)
916 {
917 	uint32_t db = mpt_rd_db(mpt);
918 	if (MPT_STATE(db) != MPT_DB_STATE_RUNNING) {
919 		mpt_prt(mpt, "Device not running\n");
920 		mpt_print_db(db);
921 	}
922 }
923 
924 /* Wait for IOC to transition to a give state */
925 static int
926 mpt_wait_state(struct mpt_softc *mpt, enum DB_STATE_BITS state)
927 {
928 	int i;
929 
930 	for (i = 0; i < MPT_MAX_WAIT; i++) {
931 		uint32_t db = mpt_rd_db(mpt);
932 		if (MPT_STATE(db) == state) {
933 			maxwait_state = i > maxwait_state ? i : maxwait_state;
934 			return (MPT_OK);
935 		}
936 		DELAY(100);
937 	}
938 	return (MPT_FAIL);
939 }
940 
941 
942 /************************* Intialization/Configuration ************************/
943 static int mpt_download_fw(struct mpt_softc *mpt);
944 
945 /* Issue the reset COMMAND to the IOC */
946 static int
947 mpt_soft_reset(struct mpt_softc *mpt)
948 {
949 	mpt_lprt(mpt, MPT_PRT_DEBUG, "soft reset\n");
950 
951 	/* Have to use hard reset if we are not in Running state */
952 	if (MPT_STATE(mpt_rd_db(mpt)) != MPT_DB_STATE_RUNNING) {
953 		mpt_prt(mpt, "soft reset failed: device not running\n");
954 		return (MPT_FAIL);
955 	}
956 
957 	/* If door bell is in use we don't have a chance of getting
958 	 * a word in since the IOC probably crashed in message
959 	 * processing. So don't waste our time.
960 	 */
961 	if (MPT_DB_IS_IN_USE(mpt_rd_db(mpt))) {
962 		mpt_prt(mpt, "soft reset failed: doorbell wedged\n");
963 		return (MPT_FAIL);
964 	}
965 
966 	/* Send the reset request to the IOC */
967 	mpt_write(mpt, MPT_OFFSET_DOORBELL,
968 	    MPI_FUNCTION_IOC_MESSAGE_UNIT_RESET << MPI_DOORBELL_FUNCTION_SHIFT);
969 	if (mpt_wait_db_ack(mpt) != MPT_OK) {
970 		mpt_prt(mpt, "soft reset failed: ack timeout\n");
971 		return (MPT_FAIL);
972 	}
973 
974 	/* Wait for the IOC to reload and come out of reset state */
975 	if (mpt_wait_state(mpt, MPT_DB_STATE_READY) != MPT_OK) {
976 		mpt_prt(mpt, "soft reset failed: device did not restart\n");
977 		return (MPT_FAIL);
978 	}
979 
980 	return MPT_OK;
981 }
982 
983 static int
984 mpt_enable_diag_mode(struct mpt_softc *mpt)
985 {
986 	int try;
987 
988 	try = 20;
989 	while (--try) {
990 
991 		if ((mpt_read(mpt, MPT_OFFSET_DIAGNOSTIC) & MPI_DIAG_DRWE) != 0)
992 			break;
993 
994 		/* Enable diagnostic registers */
995 		mpt_write(mpt, MPT_OFFSET_SEQUENCE, 0xFF);
996 		mpt_write(mpt, MPT_OFFSET_SEQUENCE, MPI_WRSEQ_1ST_KEY_VALUE);
997 		mpt_write(mpt, MPT_OFFSET_SEQUENCE, MPI_WRSEQ_2ND_KEY_VALUE);
998 		mpt_write(mpt, MPT_OFFSET_SEQUENCE, MPI_WRSEQ_3RD_KEY_VALUE);
999 		mpt_write(mpt, MPT_OFFSET_SEQUENCE, MPI_WRSEQ_4TH_KEY_VALUE);
1000 		mpt_write(mpt, MPT_OFFSET_SEQUENCE, MPI_WRSEQ_5TH_KEY_VALUE);
1001 
1002 		DELAY(100000);
1003 	}
1004 	if (try == 0)
1005 		return (EIO);
1006 	return (0);
1007 }
1008 
1009 static void
1010 mpt_disable_diag_mode(struct mpt_softc *mpt)
1011 {
1012 	mpt_write(mpt, MPT_OFFSET_SEQUENCE, 0xFFFFFFFF);
1013 }
1014 
1015 /* This is a magic diagnostic reset that resets all the ARM
1016  * processors in the chip.
1017  */
1018 static void
1019 mpt_hard_reset(struct mpt_softc *mpt)
1020 {
1021 	int error;
1022 	int wait;
1023 	uint32_t diagreg;
1024 
1025 	mpt_lprt(mpt, MPT_PRT_DEBUG, "hard reset\n");
1026 
1027 	error = mpt_enable_diag_mode(mpt);
1028 	if (error) {
1029 		mpt_prt(mpt, "WARNING - Could not enter diagnostic mode !\n");
1030 		mpt_prt(mpt, "Trying to reset anyway.\n");
1031 	}
1032 
1033 	diagreg = mpt_read(mpt, MPT_OFFSET_DIAGNOSTIC);
1034 
1035 	/*
1036 	 * This appears to be a workaround required for some
1037 	 * firmware or hardware revs.
1038 	 */
1039 	mpt_write(mpt, MPT_OFFSET_DIAGNOSTIC, diagreg | MPI_DIAG_DISABLE_ARM);
1040 	DELAY(1000);
1041 
1042 	/* Diag. port is now active so we can now hit the reset bit */
1043 	mpt_write(mpt, MPT_OFFSET_DIAGNOSTIC, diagreg | MPI_DIAG_RESET_ADAPTER);
1044 
1045         /*
1046          * Ensure that the reset has finished.  We delay 1ms
1047          * prior to reading the register to make sure the chip
1048          * has sufficiently completed its reset to handle register
1049          * accesses.
1050          */
1051 	wait = 5000;
1052 	do {
1053 		DELAY(1000);
1054 		diagreg = mpt_read(mpt, MPT_OFFSET_DIAGNOSTIC);
1055 	} while (--wait && (diagreg & MPI_DIAG_RESET_ADAPTER) == 0);
1056 
1057 	if (wait == 0) {
1058 		mpt_prt(mpt, "WARNING - Failed hard reset! "
1059 			"Trying to initialize anyway.\n");
1060 	}
1061 
1062 	/*
1063 	 * If we have firmware to download, it must be loaded before
1064 	 * the controller will become operational.  Do so now.
1065 	 */
1066 	if (mpt->fw_image != NULL) {
1067 
1068 		error = mpt_download_fw(mpt);
1069 
1070 		if (error) {
1071 			mpt_prt(mpt, "WARNING - Firmware Download Failed!\n");
1072 			mpt_prt(mpt, "Trying to initialize anyway.\n");
1073 		}
1074 	}
1075 
1076 	/*
1077 	 * Reseting the controller should have disabled write
1078 	 * access to the diagnostic registers, but disable
1079 	 * manually to be sure.
1080 	 */
1081 	mpt_disable_diag_mode(mpt);
1082 }
1083 
1084 static void
1085 mpt_core_ioc_reset(struct mpt_softc *mpt, int type)
1086 {
1087 	/*
1088 	 * Complete all pending requests with a status
1089 	 * appropriate for an IOC reset.
1090 	 */
1091 	mpt_complete_request_chain(mpt, &mpt->request_pending_list,
1092 				   MPI_IOCSTATUS_INVALID_STATE);
1093 }
1094 
1095 
1096 /*
1097  * Reset the IOC when needed. Try software command first then if needed
1098  * poke at the magic diagnostic reset. Note that a hard reset resets
1099  * *both* IOCs on dual function chips (FC929 && LSI1030) as well as
1100  * fouls up the PCI configuration registers.
1101  */
1102 int
1103 mpt_reset(struct mpt_softc *mpt, int reinit)
1104 {
1105 	struct	mpt_personality *pers;
1106 	int	ret;
1107 	int	retry_cnt = 0;
1108 
1109 	/*
1110 	 * Try a soft reset. If that fails, get out the big hammer.
1111 	 */
1112  again:
1113 	if ((ret = mpt_soft_reset(mpt)) != MPT_OK) {
1114 		int	cnt;
1115 		for (cnt = 0; cnt < 5; cnt++) {
1116 			/* Failed; do a hard reset */
1117 			mpt_hard_reset(mpt);
1118 
1119 			/*
1120 			 * Wait for the IOC to reload
1121 			 * and come out of reset state
1122 			 */
1123 			ret = mpt_wait_state(mpt, MPT_DB_STATE_READY);
1124 			if (ret == MPT_OK) {
1125 				break;
1126 			}
1127 			/*
1128 			 * Okay- try to check again...
1129 			 */
1130 			ret = mpt_wait_state(mpt, MPT_DB_STATE_READY);
1131 			if (ret == MPT_OK) {
1132 				break;
1133 			}
1134 			mpt_prt(mpt, "mpt_reset: failed hard reset (%d:%d)\n",
1135 			    retry_cnt, cnt);
1136 		}
1137 	}
1138 
1139 	if (retry_cnt == 0) {
1140 		/*
1141 		 * Invoke reset handlers.  We bump the reset count so
1142 		 * that mpt_wait_req() understands that regardless of
1143 		 * the specified wait condition, it should stop its wait.
1144 		 */
1145 		mpt->reset_cnt++;
1146 		MPT_PERS_FOREACH(mpt, pers)
1147 			pers->reset(mpt, ret);
1148 	}
1149 
1150 	if (reinit) {
1151 		ret = mpt_enable_ioc(mpt, 1);
1152 		if (ret == MPT_OK) {
1153 			mpt_enable_ints(mpt);
1154 		}
1155 	}
1156 	if (ret != MPT_OK && retry_cnt++ < 2) {
1157 		goto again;
1158 	}
1159 	return ret;
1160 }
1161 
1162 /* Return a command buffer to the free queue */
1163 void
1164 mpt_free_request(struct mpt_softc *mpt, request_t *req)
1165 {
1166 	request_t *nxt;
1167 	struct mpt_evtf_record *record;
1168 	uint32_t reply_baddr;
1169 
1170 	if (req == NULL || req != &mpt->request_pool[req->index]) {
1171 		panic("mpt_free_request bad req ptr\n");
1172 		return;
1173 	}
1174 	if ((nxt = req->chain) != NULL) {
1175 		req->chain = NULL;
1176 		mpt_free_request(mpt, nxt);	/* NB: recursion */
1177 	}
1178 	KASSERT(req->state != REQ_STATE_FREE, ("freeing free request"));
1179 	KASSERT(!(req->state & REQ_STATE_LOCKED), ("freeing locked request"));
1180 	MPT_LOCK_ASSERT(mpt);
1181 	KASSERT(mpt_req_on_free_list(mpt, req) == 0,
1182 	    ("mpt_free_request: req %p:%u func %x already on freelist",
1183 	    req, req->serno, ((MSG_REQUEST_HEADER *)req->req_vbuf)->Function));
1184 	KASSERT(mpt_req_on_pending_list(mpt, req) == 0,
1185 	    ("mpt_free_request: req %p:%u func %x on pending list",
1186 	    req, req->serno, ((MSG_REQUEST_HEADER *)req->req_vbuf)->Function));
1187 #ifdef	INVARIANTS
1188 	mpt_req_not_spcl(mpt, req, "mpt_free_request", __LINE__);
1189 #endif
1190 
1191 	req->ccb = NULL;
1192 	if (LIST_EMPTY(&mpt->ack_frames)) {
1193 		/*
1194 		 * Insert free ones at the tail
1195 		 */
1196 		req->serno = 0;
1197 		req->state = REQ_STATE_FREE;
1198 #ifdef	INVARIANTS
1199 		memset(req->req_vbuf, 0xff, sizeof (MSG_REQUEST_HEADER));
1200 #endif
1201 		TAILQ_INSERT_TAIL(&mpt->request_free_list, req, links);
1202 		if (mpt->getreqwaiter != 0) {
1203 			mpt->getreqwaiter = 0;
1204 			wakeup(&mpt->request_free_list);
1205 		}
1206 		return;
1207 	}
1208 
1209 	/*
1210 	 * Process an ack frame deferred due to resource shortage.
1211 	 */
1212 	record = LIST_FIRST(&mpt->ack_frames);
1213 	LIST_REMOVE(record, links);
1214 	req->state = REQ_STATE_ALLOCATED;
1215 	mpt_assign_serno(mpt, req);
1216 	mpt_send_event_ack(mpt, req, &record->reply, record->context);
1217 	reply_baddr = (uint32_t)((uint8_t *)record - mpt->reply)
1218 		    + (mpt->reply_phys & 0xFFFFFFFF);
1219 	mpt_free_reply(mpt, reply_baddr);
1220 }
1221 
1222 /* Get a command buffer from the free queue */
1223 request_t *
1224 mpt_get_request(struct mpt_softc *mpt, int sleep_ok)
1225 {
1226 	request_t *req;
1227 
1228 retry:
1229 	MPT_LOCK_ASSERT(mpt);
1230 	req = TAILQ_FIRST(&mpt->request_free_list);
1231 	if (req != NULL) {
1232 		KASSERT(req == &mpt->request_pool[req->index],
1233 		    ("mpt_get_request: corrupted request free list\n"));
1234 		KASSERT(req->state == REQ_STATE_FREE,
1235 		    ("req %p:%u not free on free list %x index %d function %x",
1236 		    req, req->serno, req->state, req->index,
1237 		    ((MSG_REQUEST_HEADER *)req->req_vbuf)->Function));
1238 		TAILQ_REMOVE(&mpt->request_free_list, req, links);
1239 		req->state = REQ_STATE_ALLOCATED;
1240 		req->chain = NULL;
1241 		mpt_assign_serno(mpt, req);
1242 	} else if (sleep_ok != 0) {
1243 		mpt->getreqwaiter = 1;
1244 		mpt_sleep(mpt, &mpt->request_free_list, PUSER, "mptgreq", 0);
1245 		goto retry;
1246 	}
1247 	return (req);
1248 }
1249 
1250 /* Pass the command to the IOC */
1251 void
1252 mpt_send_cmd(struct mpt_softc *mpt, request_t *req)
1253 {
1254 	if (mpt->verbose > MPT_PRT_DEBUG2) {
1255 		mpt_dump_request(mpt, req);
1256 	}
1257 	bus_dmamap_sync(mpt->request_dmat, mpt->request_dmap,
1258 	    BUS_DMASYNC_PREWRITE);
1259 	req->state |= REQ_STATE_QUEUED;
1260 	KASSERT(mpt_req_on_free_list(mpt, req) == 0,
1261 	    ("req %p:%u func %x on freelist list in mpt_send_cmd",
1262 	    req, req->serno, ((MSG_REQUEST_HEADER *)req->req_vbuf)->Function));
1263 	KASSERT(mpt_req_on_pending_list(mpt, req) == 0,
1264 	    ("req %p:%u func %x already on pending list in mpt_send_cmd",
1265 	    req, req->serno, ((MSG_REQUEST_HEADER *)req->req_vbuf)->Function));
1266 	TAILQ_INSERT_HEAD(&mpt->request_pending_list, req, links);
1267 	mpt_write(mpt, MPT_OFFSET_REQUEST_Q, (uint32_t) req->req_pbuf);
1268 }
1269 
1270 /*
1271  * Wait for a request to complete.
1272  *
1273  * Inputs:
1274  *	mpt		softc of controller executing request
1275  *	req		request to wait for
1276  *	sleep_ok	nonzero implies may sleep in this context
1277  *	time_ms		timeout in ms.  0 implies no timeout.
1278  *
1279  * Return Values:
1280  *	0		Request completed
1281  *	non-0		Timeout fired before request completion.
1282  */
1283 int
1284 mpt_wait_req(struct mpt_softc *mpt, request_t *req,
1285 	     mpt_req_state_t state, mpt_req_state_t mask,
1286 	     int sleep_ok, int time_ms)
1287 {
1288 	int   error;
1289 	int   timeout;
1290 	u_int saved_cnt;
1291 
1292 	/*
1293 	 * timeout is in ms.  0 indicates infinite wait.
1294 	 * Convert to ticks or 500us units depending on
1295 	 * our sleep mode.
1296 	 */
1297 	if (sleep_ok != 0) {
1298 		timeout = (time_ms * hz) / 1000;
1299 	} else {
1300 		timeout = time_ms * 2;
1301 	}
1302 	req->state |= REQ_STATE_NEED_WAKEUP;
1303 	mask &= ~REQ_STATE_NEED_WAKEUP;
1304 	saved_cnt = mpt->reset_cnt;
1305 	while ((req->state & mask) != state && mpt->reset_cnt == saved_cnt) {
1306 		if (sleep_ok != 0) {
1307 			error = mpt_sleep(mpt, req, PUSER, "mptreq", timeout);
1308 			if (error == EWOULDBLOCK) {
1309 				timeout = 0;
1310 				break;
1311 			}
1312 		} else {
1313 			if (time_ms != 0 && --timeout == 0) {
1314 				break;
1315 			}
1316 			DELAY(500);
1317 			mpt_intr(mpt);
1318 		}
1319 	}
1320 	req->state &= ~REQ_STATE_NEED_WAKEUP;
1321 	if (mpt->reset_cnt != saved_cnt) {
1322 		return (EIO);
1323 	}
1324 	if (time_ms && timeout <= 0) {
1325 		MSG_REQUEST_HEADER *msg_hdr = req->req_vbuf;
1326 		req->state |= REQ_STATE_TIMEDOUT;
1327 		mpt_prt(mpt, "mpt_wait_req(%x) timed out\n", msg_hdr->Function);
1328 		return (ETIMEDOUT);
1329 	}
1330 	return (0);
1331 }
1332 
1333 /*
1334  * Send a command to the IOC via the handshake register.
1335  *
1336  * Only done at initialization time and for certain unusual
1337  * commands such as device/bus reset as specified by LSI.
1338  */
1339 int
1340 mpt_send_handshake_cmd(struct mpt_softc *mpt, size_t len, void *cmd)
1341 {
1342 	int i;
1343 	uint32_t data, *data32;
1344 
1345 	/* Check condition of the IOC */
1346 	data = mpt_rd_db(mpt);
1347 	if ((MPT_STATE(data) != MPT_DB_STATE_READY
1348 	  && MPT_STATE(data) != MPT_DB_STATE_RUNNING
1349 	  && MPT_STATE(data) != MPT_DB_STATE_FAULT)
1350 	 || MPT_DB_IS_IN_USE(data)) {
1351 		mpt_prt(mpt, "handshake aborted - invalid doorbell state\n");
1352 		mpt_print_db(data);
1353 		return (EBUSY);
1354 	}
1355 
1356 	/* We move things in 32 bit chunks */
1357 	len = (len + 3) >> 2;
1358 	data32 = cmd;
1359 
1360 	/* Clear any left over pending doorbell interrupts */
1361 	if (MPT_DB_INTR(mpt_rd_intr(mpt)))
1362 		mpt_write(mpt, MPT_OFFSET_INTR_STATUS, 0);
1363 
1364 	/*
1365 	 * Tell the handshake reg. we are going to send a command
1366          * and how long it is going to be.
1367 	 */
1368 	data = (MPI_FUNCTION_HANDSHAKE << MPI_DOORBELL_FUNCTION_SHIFT) |
1369 	    (len << MPI_DOORBELL_ADD_DWORDS_SHIFT);
1370 	mpt_write(mpt, MPT_OFFSET_DOORBELL, data);
1371 
1372 	/* Wait for the chip to notice */
1373 	if (mpt_wait_db_int(mpt) != MPT_OK) {
1374 		mpt_prt(mpt, "mpt_send_handshake_cmd: db ignored\n");
1375 		return (ETIMEDOUT);
1376 	}
1377 
1378 	/* Clear the interrupt */
1379 	mpt_write(mpt, MPT_OFFSET_INTR_STATUS, 0);
1380 
1381 	if (mpt_wait_db_ack(mpt) != MPT_OK) {
1382 		mpt_prt(mpt, "mpt_send_handshake_cmd: db ack timed out\n");
1383 		return (ETIMEDOUT);
1384 	}
1385 
1386 	/* Send the command */
1387 	for (i = 0; i < len; i++) {
1388 		mpt_write(mpt, MPT_OFFSET_DOORBELL, htole32(*data32++));
1389 		if (mpt_wait_db_ack(mpt) != MPT_OK) {
1390 			mpt_prt(mpt,
1391 			    "mpt_send_handshake_cmd: timeout @ index %d\n", i);
1392 			return (ETIMEDOUT);
1393 		}
1394 	}
1395 	return MPT_OK;
1396 }
1397 
1398 /* Get the response from the handshake register */
1399 int
1400 mpt_recv_handshake_reply(struct mpt_softc *mpt, size_t reply_len, void *reply)
1401 {
1402 	int left, reply_left;
1403 	u_int16_t *data16;
1404 	uint32_t data;
1405 	MSG_DEFAULT_REPLY *hdr;
1406 
1407 	/* We move things out in 16 bit chunks */
1408 	reply_len >>= 1;
1409 	data16 = (u_int16_t *)reply;
1410 
1411 	hdr = (MSG_DEFAULT_REPLY *)reply;
1412 
1413 	/* Get first word */
1414 	if (mpt_wait_db_int(mpt) != MPT_OK) {
1415 		mpt_prt(mpt, "mpt_recv_handshake_cmd timeout1\n");
1416 		return ETIMEDOUT;
1417 	}
1418 	data = mpt_read(mpt, MPT_OFFSET_DOORBELL);
1419 	*data16++ = le16toh(data & MPT_DB_DATA_MASK);
1420 	mpt_write(mpt, MPT_OFFSET_INTR_STATUS, 0);
1421 
1422 	/* Get Second Word */
1423 	if (mpt_wait_db_int(mpt) != MPT_OK) {
1424 		mpt_prt(mpt, "mpt_recv_handshake_cmd timeout2\n");
1425 		return ETIMEDOUT;
1426 	}
1427 	data = mpt_read(mpt, MPT_OFFSET_DOORBELL);
1428 	*data16++ = le16toh(data & MPT_DB_DATA_MASK);
1429 	mpt_write(mpt, MPT_OFFSET_INTR_STATUS, 0);
1430 
1431 	/*
1432 	 * With the second word, we can now look at the length.
1433 	 * Warn about a reply that's too short (except for IOC FACTS REPLY)
1434 	 */
1435 	if ((reply_len >> 1) != hdr->MsgLength &&
1436 	    (hdr->Function != MPI_FUNCTION_IOC_FACTS)){
1437 #if __FreeBSD_version >= 500000
1438 		mpt_prt(mpt, "reply length does not match message length: "
1439 			"got %x; expected %zx for function %x\n",
1440 			hdr->MsgLength << 2, reply_len << 1, hdr->Function);
1441 #else
1442 		mpt_prt(mpt, "reply length does not match message length: "
1443 			"got %x; expected %x for function %x\n",
1444 			hdr->MsgLength << 2, reply_len << 1, hdr->Function);
1445 #endif
1446 	}
1447 
1448 	/* Get rest of the reply; but don't overflow the provided buffer */
1449 	left = (hdr->MsgLength << 1) - 2;
1450 	reply_left =  reply_len - 2;
1451 	while (left--) {
1452 		u_int16_t datum;
1453 
1454 		if (mpt_wait_db_int(mpt) != MPT_OK) {
1455 			mpt_prt(mpt, "mpt_recv_handshake_cmd timeout3\n");
1456 			return ETIMEDOUT;
1457 		}
1458 		data = mpt_read(mpt, MPT_OFFSET_DOORBELL);
1459 		datum = le16toh(data & MPT_DB_DATA_MASK);
1460 
1461 		if (reply_left-- > 0)
1462 			*data16++ = datum;
1463 
1464 		mpt_write(mpt, MPT_OFFSET_INTR_STATUS, 0);
1465 	}
1466 
1467 	/* One more wait & clear at the end */
1468 	if (mpt_wait_db_int(mpt) != MPT_OK) {
1469 		mpt_prt(mpt, "mpt_recv_handshake_cmd timeout4\n");
1470 		return ETIMEDOUT;
1471 	}
1472 	mpt_write(mpt, MPT_OFFSET_INTR_STATUS, 0);
1473 
1474 	if ((hdr->IOCStatus & MPI_IOCSTATUS_MASK) != MPI_IOCSTATUS_SUCCESS) {
1475 		if (mpt->verbose >= MPT_PRT_TRACE)
1476 			mpt_print_reply(hdr);
1477 		return (MPT_FAIL | hdr->IOCStatus);
1478 	}
1479 
1480 	return (0);
1481 }
1482 
1483 static int
1484 mpt_get_iocfacts(struct mpt_softc *mpt, MSG_IOC_FACTS_REPLY *freplp)
1485 {
1486 	MSG_IOC_FACTS f_req;
1487 	int error;
1488 
1489 	memset(&f_req, 0, sizeof f_req);
1490 	f_req.Function = MPI_FUNCTION_IOC_FACTS;
1491 	f_req.MsgContext = htole32(MPT_REPLY_HANDLER_HANDSHAKE);
1492 	error = mpt_send_handshake_cmd(mpt, sizeof f_req, &f_req);
1493 	if (error) {
1494 		return(error);
1495 	}
1496 	error = mpt_recv_handshake_reply(mpt, sizeof (*freplp), freplp);
1497 	return (error);
1498 }
1499 
1500 static int
1501 mpt_get_portfacts(struct mpt_softc *mpt, U8 port, MSG_PORT_FACTS_REPLY *freplp)
1502 {
1503 	MSG_PORT_FACTS f_req;
1504 	int error;
1505 
1506 	memset(&f_req, 0, sizeof f_req);
1507 	f_req.Function = MPI_FUNCTION_PORT_FACTS;
1508 	f_req.PortNumber = port;
1509 	f_req.MsgContext = htole32(MPT_REPLY_HANDLER_HANDSHAKE);
1510 	error = mpt_send_handshake_cmd(mpt, sizeof f_req, &f_req);
1511 	if (error) {
1512 		return(error);
1513 	}
1514 	error = mpt_recv_handshake_reply(mpt, sizeof (*freplp), freplp);
1515 	return (error);
1516 }
1517 
1518 /*
1519  * Send the initialization request. This is where we specify how many
1520  * SCSI busses and how many devices per bus we wish to emulate.
1521  * This is also the command that specifies the max size of the reply
1522  * frames from the IOC that we will be allocating.
1523  */
1524 static int
1525 mpt_send_ioc_init(struct mpt_softc *mpt, uint32_t who)
1526 {
1527 	int error = 0;
1528 	MSG_IOC_INIT init;
1529 	MSG_IOC_INIT_REPLY reply;
1530 
1531 	memset(&init, 0, sizeof init);
1532 	init.WhoInit = who;
1533 	init.Function = MPI_FUNCTION_IOC_INIT;
1534 	init.MaxDevices = 0;	/* at least 256 devices per bus */
1535 	init.MaxBuses = 16;	/* at least 16 busses */
1536 
1537 	init.MsgVersion = htole16(MPI_VERSION);
1538 	init.HeaderVersion = htole16(MPI_HEADER_VERSION);
1539 	init.ReplyFrameSize = htole16(MPT_REPLY_SIZE);
1540 	init.MsgContext = htole32(MPT_REPLY_HANDLER_HANDSHAKE);
1541 
1542 	if ((error = mpt_send_handshake_cmd(mpt, sizeof init, &init)) != 0) {
1543 		return(error);
1544 	}
1545 
1546 	error = mpt_recv_handshake_reply(mpt, sizeof reply, &reply);
1547 	return (error);
1548 }
1549 
1550 
1551 /*
1552  * Utiltity routine to read configuration headers and pages
1553  */
1554 int
1555 mpt_issue_cfg_req(struct mpt_softc *mpt, request_t *req, cfgparms_t *params,
1556 		  bus_addr_t addr, bus_size_t len, int sleep_ok, int timeout_ms)
1557 {
1558 	MSG_CONFIG *cfgp;
1559 	SGE_SIMPLE32 *se;
1560 
1561 	cfgp = req->req_vbuf;
1562 	memset(cfgp, 0, sizeof *cfgp);
1563 	cfgp->Action = params->Action;
1564 	cfgp->Function = MPI_FUNCTION_CONFIG;
1565 	cfgp->Header.PageVersion = params->PageVersion;
1566 	cfgp->Header.PageNumber = params->PageNumber;
1567 	cfgp->PageAddress = htole32(params->PageAddress);
1568 	if ((params->PageType & MPI_CONFIG_PAGETYPE_MASK) ==
1569 	    MPI_CONFIG_PAGETYPE_EXTENDED) {
1570 		cfgp->Header.PageType = MPI_CONFIG_PAGETYPE_EXTENDED;
1571 		cfgp->Header.PageLength = 0;
1572 		cfgp->ExtPageLength = htole16(params->ExtPageLength);
1573 		cfgp->ExtPageType = params->ExtPageType;
1574 	} else {
1575 		cfgp->Header.PageType = params->PageType;
1576 		cfgp->Header.PageLength = params->PageLength;
1577 	}
1578 	se = (SGE_SIMPLE32 *)&cfgp->PageBufferSGE;
1579 	se->Address = htole32(addr);
1580 	MPI_pSGE_SET_LENGTH(se, len);
1581 	MPI_pSGE_SET_FLAGS(se, (MPI_SGE_FLAGS_SIMPLE_ELEMENT |
1582 	    MPI_SGE_FLAGS_LAST_ELEMENT | MPI_SGE_FLAGS_END_OF_BUFFER |
1583 	    MPI_SGE_FLAGS_END_OF_LIST |
1584 	    ((params->Action == MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT
1585 	  || params->Action == MPI_CONFIG_ACTION_PAGE_WRITE_NVRAM)
1586 	   ? MPI_SGE_FLAGS_HOST_TO_IOC : MPI_SGE_FLAGS_IOC_TO_HOST)));
1587 	se->FlagsLength = htole32(se->FlagsLength);
1588 	cfgp->MsgContext = htole32(req->index | MPT_REPLY_HANDLER_CONFIG);
1589 
1590 	mpt_check_doorbell(mpt);
1591 	mpt_send_cmd(mpt, req);
1592 	return (mpt_wait_req(mpt, req, REQ_STATE_DONE, REQ_STATE_DONE,
1593 			     sleep_ok, timeout_ms));
1594 }
1595 
1596 int
1597 mpt_read_extcfg_header(struct mpt_softc *mpt, int PageVersion, int PageNumber,
1598 		       uint32_t PageAddress, int ExtPageType,
1599 		       CONFIG_EXTENDED_PAGE_HEADER *rslt,
1600 		       int sleep_ok, int timeout_ms)
1601 {
1602 	request_t  *req;
1603 	cfgparms_t params;
1604 	MSG_CONFIG_REPLY *cfgp;
1605 	int	    error;
1606 
1607 	req = mpt_get_request(mpt, sleep_ok);
1608 	if (req == NULL) {
1609 		mpt_prt(mpt, "mpt_extread_cfg_header: Get request failed!\n");
1610 		return (ENOMEM);
1611 	}
1612 
1613 	params.Action = MPI_CONFIG_ACTION_PAGE_HEADER;
1614 	params.PageVersion = PageVersion;
1615 	params.PageLength = 0;
1616 	params.PageNumber = PageNumber;
1617 	params.PageType = MPI_CONFIG_PAGETYPE_EXTENDED;
1618 	params.PageAddress = PageAddress;
1619 	params.ExtPageType = ExtPageType;
1620 	params.ExtPageLength = 0;
1621 	error = mpt_issue_cfg_req(mpt, req, &params, /*addr*/0, /*len*/0,
1622 				  sleep_ok, timeout_ms);
1623 	if (error != 0) {
1624 		/*
1625 		 * Leave the request. Without resetting the chip, it's
1626 		 * still owned by it and we'll just get into trouble
1627 		 * freeing it now. Mark it as abandoned so that if it
1628 		 * shows up later it can be freed.
1629 		 */
1630 		mpt_prt(mpt, "read_extcfg_header timed out\n");
1631 		return (ETIMEDOUT);
1632 	}
1633 
1634         switch (req->IOCStatus & MPI_IOCSTATUS_MASK) {
1635 	case MPI_IOCSTATUS_SUCCESS:
1636 		cfgp = req->req_vbuf;
1637 		rslt->PageVersion = cfgp->Header.PageVersion;
1638 		rslt->PageNumber = cfgp->Header.PageNumber;
1639 		rslt->PageType = cfgp->Header.PageType;
1640 		rslt->ExtPageLength = le16toh(cfgp->ExtPageLength);
1641 		rslt->ExtPageType = cfgp->ExtPageType;
1642 		error = 0;
1643 		break;
1644 	case MPI_IOCSTATUS_CONFIG_INVALID_PAGE:
1645 		mpt_lprt(mpt, MPT_PRT_DEBUG,
1646 		    "Invalid Page Type %d Number %d Addr 0x%0x\n",
1647 		    MPI_CONFIG_PAGETYPE_EXTENDED, PageNumber, PageAddress);
1648 		error = EINVAL;
1649 		break;
1650 	default:
1651 		mpt_prt(mpt, "mpt_read_extcfg_header: Config Info Status %x\n",
1652 			req->IOCStatus);
1653 		error = EIO;
1654 		break;
1655 	}
1656 	mpt_free_request(mpt, req);
1657 	return (error);
1658 }
1659 
1660 int
1661 mpt_read_extcfg_page(struct mpt_softc *mpt, int Action, uint32_t PageAddress,
1662 		     CONFIG_EXTENDED_PAGE_HEADER *hdr, void *buf, size_t len,
1663 		     int sleep_ok, int timeout_ms)
1664 {
1665 	request_t    *req;
1666 	cfgparms_t    params;
1667 	int	      error;
1668 
1669 	req = mpt_get_request(mpt, sleep_ok);
1670 	if (req == NULL) {
1671 		mpt_prt(mpt, "mpt_read_extcfg_page: Get request failed!\n");
1672 		return (-1);
1673 	}
1674 
1675 	params.Action = Action;
1676 	params.PageVersion = hdr->PageVersion;
1677 	params.PageLength = 0;
1678 	params.PageNumber = hdr->PageNumber;
1679 	params.PageType = MPI_CONFIG_PAGETYPE_EXTENDED;
1680 	params.PageAddress = PageAddress;
1681 	params.ExtPageType = hdr->ExtPageType;
1682 	params.ExtPageLength = hdr->ExtPageLength;
1683 	error = mpt_issue_cfg_req(mpt, req, &params,
1684 				  req->req_pbuf + MPT_RQSL(mpt),
1685 				  len, sleep_ok, timeout_ms);
1686 	if (error != 0) {
1687 		mpt_prt(mpt, "read_extcfg_page(%d) timed out\n", Action);
1688 		return (-1);
1689 	}
1690 
1691 	if ((req->IOCStatus & MPI_IOCSTATUS_MASK) != MPI_IOCSTATUS_SUCCESS) {
1692 		mpt_prt(mpt, "mpt_read_extcfg_page: Config Info Status %x\n",
1693 			req->IOCStatus);
1694 		mpt_free_request(mpt, req);
1695 		return (-1);
1696 	}
1697 	bus_dmamap_sync(mpt->request_dmat, mpt->request_dmap,
1698 	    BUS_DMASYNC_POSTREAD);
1699 	memcpy(buf, ((uint8_t *)req->req_vbuf)+MPT_RQSL(mpt), len);
1700 	mpt_free_request(mpt, req);
1701 	return (0);
1702 }
1703 
1704 int
1705 mpt_read_cfg_header(struct mpt_softc *mpt, int PageType, int PageNumber,
1706 		    uint32_t PageAddress, CONFIG_PAGE_HEADER *rslt,
1707 		    int sleep_ok, int timeout_ms)
1708 {
1709 	request_t  *req;
1710 	cfgparms_t params;
1711 	MSG_CONFIG *cfgp;
1712 	int	    error;
1713 
1714 	req = mpt_get_request(mpt, sleep_ok);
1715 	if (req == NULL) {
1716 		mpt_prt(mpt, "mpt_read_cfg_header: Get request failed!\n");
1717 		return (ENOMEM);
1718 	}
1719 
1720 	params.Action = MPI_CONFIG_ACTION_PAGE_HEADER;
1721 	params.PageVersion = 0;
1722 	params.PageLength = 0;
1723 	params.PageNumber = PageNumber;
1724 	params.PageType = PageType;
1725 	params.PageAddress = PageAddress;
1726 	error = mpt_issue_cfg_req(mpt, req, &params, /*addr*/0, /*len*/0,
1727 				  sleep_ok, timeout_ms);
1728 	if (error != 0) {
1729 		/*
1730 		 * Leave the request. Without resetting the chip, it's
1731 		 * still owned by it and we'll just get into trouble
1732 		 * freeing it now. Mark it as abandoned so that if it
1733 		 * shows up later it can be freed.
1734 		 */
1735 		mpt_prt(mpt, "read_cfg_header timed out\n");
1736 		return (ETIMEDOUT);
1737 	}
1738 
1739         switch (req->IOCStatus & MPI_IOCSTATUS_MASK) {
1740 	case MPI_IOCSTATUS_SUCCESS:
1741 		cfgp = req->req_vbuf;
1742 		bcopy(&cfgp->Header, rslt, sizeof(*rslt));
1743 		error = 0;
1744 		break;
1745 	case MPI_IOCSTATUS_CONFIG_INVALID_PAGE:
1746 		mpt_lprt(mpt, MPT_PRT_DEBUG,
1747 		    "Invalid Page Type %d Number %d Addr 0x%0x\n",
1748 		    PageType, PageNumber, PageAddress);
1749 		error = EINVAL;
1750 		break;
1751 	default:
1752 		mpt_prt(mpt, "mpt_read_cfg_header: Config Info Status %x\n",
1753 			req->IOCStatus);
1754 		error = EIO;
1755 		break;
1756 	}
1757 	mpt_free_request(mpt, req);
1758 	return (error);
1759 }
1760 
1761 int
1762 mpt_read_cfg_page(struct mpt_softc *mpt, int Action, uint32_t PageAddress,
1763 		  CONFIG_PAGE_HEADER *hdr, size_t len, int sleep_ok,
1764 		  int timeout_ms)
1765 {
1766 	request_t    *req;
1767 	cfgparms_t    params;
1768 	int	      error;
1769 
1770 	req = mpt_get_request(mpt, sleep_ok);
1771 	if (req == NULL) {
1772 		mpt_prt(mpt, "mpt_read_cfg_page: Get request failed!\n");
1773 		return (-1);
1774 	}
1775 
1776 	params.Action = Action;
1777 	params.PageVersion = hdr->PageVersion;
1778 	params.PageLength = hdr->PageLength;
1779 	params.PageNumber = hdr->PageNumber;
1780 	params.PageType = hdr->PageType & MPI_CONFIG_PAGETYPE_MASK;
1781 	params.PageAddress = PageAddress;
1782 	error = mpt_issue_cfg_req(mpt, req, &params,
1783 				  req->req_pbuf + MPT_RQSL(mpt),
1784 				  len, sleep_ok, timeout_ms);
1785 	if (error != 0) {
1786 		mpt_prt(mpt, "read_cfg_page(%d) timed out\n", Action);
1787 		return (-1);
1788 	}
1789 
1790 	if ((req->IOCStatus & MPI_IOCSTATUS_MASK) != MPI_IOCSTATUS_SUCCESS) {
1791 		mpt_prt(mpt, "mpt_read_cfg_page: Config Info Status %x\n",
1792 			req->IOCStatus);
1793 		mpt_free_request(mpt, req);
1794 		return (-1);
1795 	}
1796 	bus_dmamap_sync(mpt->request_dmat, mpt->request_dmap,
1797 	    BUS_DMASYNC_POSTREAD);
1798 	memcpy(hdr, ((uint8_t *)req->req_vbuf)+MPT_RQSL(mpt), len);
1799 	mpt_free_request(mpt, req);
1800 	return (0);
1801 }
1802 
1803 int
1804 mpt_write_cfg_page(struct mpt_softc *mpt, int Action, uint32_t PageAddress,
1805 		   CONFIG_PAGE_HEADER *hdr, size_t len, int sleep_ok,
1806 		   int timeout_ms)
1807 {
1808 	request_t    *req;
1809 	cfgparms_t    params;
1810 	u_int	      hdr_attr;
1811 	int	      error;
1812 
1813 	hdr_attr = hdr->PageType & MPI_CONFIG_PAGEATTR_MASK;
1814 	if (hdr_attr != MPI_CONFIG_PAGEATTR_CHANGEABLE &&
1815 	    hdr_attr != MPI_CONFIG_PAGEATTR_PERSISTENT) {
1816 		mpt_prt(mpt, "page type 0x%x not changeable\n",
1817 			hdr->PageType & MPI_CONFIG_PAGETYPE_MASK);
1818 		return (-1);
1819 	}
1820 
1821 #if	0
1822 	/*
1823 	 * We shouldn't mask off other bits here.
1824 	 */
1825 	hdr->PageType &= MPI_CONFIG_PAGETYPE_MASK;
1826 #endif
1827 
1828 	req = mpt_get_request(mpt, sleep_ok);
1829 	if (req == NULL)
1830 		return (-1);
1831 
1832 	memcpy(((caddr_t)req->req_vbuf) + MPT_RQSL(mpt), hdr, len);
1833 
1834 	/*
1835 	 * There isn't any point in restoring stripped out attributes
1836 	 * if you then mask them going down to issue the request.
1837 	 */
1838 
1839 	params.Action = Action;
1840 	params.PageVersion = hdr->PageVersion;
1841 	params.PageLength = hdr->PageLength;
1842 	params.PageNumber = hdr->PageNumber;
1843 	params.PageAddress = PageAddress;
1844 #if	0
1845 	/* Restore stripped out attributes */
1846 	hdr->PageType |= hdr_attr;
1847 	params.PageType = hdr->PageType & MPI_CONFIG_PAGETYPE_MASK;
1848 #else
1849 	params.PageType = hdr->PageType;
1850 #endif
1851 	error = mpt_issue_cfg_req(mpt, req, &params,
1852 				  req->req_pbuf + MPT_RQSL(mpt),
1853 				  len, sleep_ok, timeout_ms);
1854 	if (error != 0) {
1855 		mpt_prt(mpt, "mpt_write_cfg_page timed out\n");
1856 		return (-1);
1857 	}
1858 
1859         if ((req->IOCStatus & MPI_IOCSTATUS_MASK) != MPI_IOCSTATUS_SUCCESS) {
1860 		mpt_prt(mpt, "mpt_write_cfg_page: Config Info Status %x\n",
1861 			req->IOCStatus);
1862 		mpt_free_request(mpt, req);
1863 		return (-1);
1864 	}
1865 	mpt_free_request(mpt, req);
1866 	return (0);
1867 }
1868 
1869 /*
1870  * Read IOC configuration information
1871  */
1872 static int
1873 mpt_read_config_info_ioc(struct mpt_softc *mpt)
1874 {
1875 	CONFIG_PAGE_HEADER hdr;
1876 	struct mpt_raid_volume *mpt_raid;
1877 	int rv;
1878 	int i;
1879 	size_t len;
1880 
1881 	rv = mpt_read_cfg_header(mpt, MPI_CONFIG_PAGETYPE_IOC,
1882 		2, 0, &hdr, FALSE, 5000);
1883 	/*
1884 	 * If it's an invalid page, so what? Not a supported function....
1885 	 */
1886 	if (rv == EINVAL) {
1887 		return (0);
1888 	}
1889 	if (rv) {
1890 		return (rv);
1891 	}
1892 
1893 	mpt_lprt(mpt, MPT_PRT_DEBUG,
1894 	    "IOC Page 2 Header: Version %x len %x PageNumber %x PageType %x\n",
1895 	    hdr.PageVersion, hdr.PageLength << 2,
1896 	    hdr.PageNumber, hdr.PageType);
1897 
1898 	len = hdr.PageLength * sizeof(uint32_t);
1899 	mpt->ioc_page2 = malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
1900 	if (mpt->ioc_page2 == NULL) {
1901 		mpt_prt(mpt, "unable to allocate memory for IOC page 2\n");
1902 		mpt_raid_free_mem(mpt);
1903 		return (ENOMEM);
1904 	}
1905 	memcpy(&mpt->ioc_page2->Header, &hdr, sizeof(hdr));
1906 	rv = mpt_read_cur_cfg_page(mpt, 0,
1907 	    &mpt->ioc_page2->Header, len, FALSE, 5000);
1908 	if (rv) {
1909 		mpt_prt(mpt, "failed to read IOC Page 2\n");
1910 		mpt_raid_free_mem(mpt);
1911 		return (EIO);
1912 	}
1913 	mpt2host_config_page_ioc2(mpt->ioc_page2);
1914 
1915 	if (mpt->ioc_page2->CapabilitiesFlags != 0) {
1916 		uint32_t mask;
1917 
1918 		mpt_prt(mpt, "Capabilities: (");
1919 		for (mask = 1; mask != 0; mask <<= 1) {
1920 			if ((mpt->ioc_page2->CapabilitiesFlags & mask) == 0) {
1921 				continue;
1922 			}
1923 			switch (mask) {
1924 			case MPI_IOCPAGE2_CAP_FLAGS_IS_SUPPORT:
1925 				mpt_prtc(mpt, " RAID-0");
1926 				break;
1927 			case MPI_IOCPAGE2_CAP_FLAGS_IME_SUPPORT:
1928 				mpt_prtc(mpt, " RAID-1E");
1929 				break;
1930 			case MPI_IOCPAGE2_CAP_FLAGS_IM_SUPPORT:
1931 				mpt_prtc(mpt, " RAID-1");
1932 				break;
1933 			case MPI_IOCPAGE2_CAP_FLAGS_SES_SUPPORT:
1934 				mpt_prtc(mpt, " SES");
1935 				break;
1936 			case MPI_IOCPAGE2_CAP_FLAGS_SAFTE_SUPPORT:
1937 				mpt_prtc(mpt, " SAFTE");
1938 				break;
1939 			case MPI_IOCPAGE2_CAP_FLAGS_CROSS_CHANNEL_SUPPORT:
1940 				mpt_prtc(mpt, " Multi-Channel-Arrays");
1941 			default:
1942 				break;
1943 			}
1944 		}
1945 		mpt_prtc(mpt, " )\n");
1946 		if ((mpt->ioc_page2->CapabilitiesFlags
1947 		   & (MPI_IOCPAGE2_CAP_FLAGS_IS_SUPPORT
1948 		    | MPI_IOCPAGE2_CAP_FLAGS_IME_SUPPORT
1949 		    | MPI_IOCPAGE2_CAP_FLAGS_IM_SUPPORT)) != 0) {
1950 			mpt_prt(mpt, "%d Active Volume%s(%d Max)\n",
1951 				mpt->ioc_page2->NumActiveVolumes,
1952 				mpt->ioc_page2->NumActiveVolumes != 1
1953 			      ? "s " : " ",
1954 				mpt->ioc_page2->MaxVolumes);
1955 			mpt_prt(mpt, "%d Hidden Drive Member%s(%d Max)\n",
1956 				mpt->ioc_page2->NumActivePhysDisks,
1957 				mpt->ioc_page2->NumActivePhysDisks != 1
1958 			      ? "s " : " ",
1959 				mpt->ioc_page2->MaxPhysDisks);
1960 		}
1961 	}
1962 
1963 	len = mpt->ioc_page2->MaxVolumes * sizeof(struct mpt_raid_volume);
1964 	mpt->raid_volumes = malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
1965 	if (mpt->raid_volumes == NULL) {
1966 		mpt_prt(mpt, "Could not allocate RAID volume data\n");
1967 		mpt_raid_free_mem(mpt);
1968 		return (ENOMEM);
1969 	}
1970 
1971 	/*
1972 	 * Copy critical data out of ioc_page2 so that we can
1973 	 * safely refresh the page without windows of unreliable
1974 	 * data.
1975 	 */
1976 	mpt->raid_max_volumes =  mpt->ioc_page2->MaxVolumes;
1977 
1978 	len = sizeof(*mpt->raid_volumes->config_page) +
1979 	    (sizeof (RAID_VOL0_PHYS_DISK) * (mpt->ioc_page2->MaxPhysDisks - 1));
1980 	for (i = 0; i < mpt->ioc_page2->MaxVolumes; i++) {
1981 		mpt_raid = &mpt->raid_volumes[i];
1982 		mpt_raid->config_page =
1983 		    malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
1984 		if (mpt_raid->config_page == NULL) {
1985 			mpt_prt(mpt, "Could not allocate RAID page data\n");
1986 			mpt_raid_free_mem(mpt);
1987 			return (ENOMEM);
1988 		}
1989 	}
1990 	mpt->raid_page0_len = len;
1991 
1992 	len = mpt->ioc_page2->MaxPhysDisks * sizeof(struct mpt_raid_disk);
1993 	mpt->raid_disks = malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
1994 	if (mpt->raid_disks == NULL) {
1995 		mpt_prt(mpt, "Could not allocate RAID disk data\n");
1996 		mpt_raid_free_mem(mpt);
1997 		return (ENOMEM);
1998 	}
1999 	mpt->raid_max_disks =  mpt->ioc_page2->MaxPhysDisks;
2000 
2001 	/*
2002 	 * Load page 3.
2003 	 */
2004 	rv = mpt_read_cfg_header(mpt, MPI_CONFIG_PAGETYPE_IOC,
2005 	    3, 0, &hdr, FALSE, 5000);
2006 	if (rv) {
2007 		mpt_raid_free_mem(mpt);
2008 		return (EIO);
2009 	}
2010 
2011 	mpt_lprt(mpt, MPT_PRT_DEBUG, "IOC Page 3 Header: %x %x %x %x\n",
2012 	    hdr.PageVersion, hdr.PageLength, hdr.PageNumber, hdr.PageType);
2013 
2014 	len = hdr.PageLength * sizeof(uint32_t);
2015 	mpt->ioc_page3 = malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
2016 	if (mpt->ioc_page3 == NULL) {
2017 		mpt_prt(mpt, "unable to allocate memory for IOC page 3\n");
2018 		mpt_raid_free_mem(mpt);
2019 		return (ENOMEM);
2020 	}
2021 	memcpy(&mpt->ioc_page3->Header, &hdr, sizeof(hdr));
2022 	rv = mpt_read_cur_cfg_page(mpt, 0,
2023 	    &mpt->ioc_page3->Header, len, FALSE, 5000);
2024 	if (rv) {
2025 		mpt_raid_free_mem(mpt);
2026 		return (EIO);
2027 	}
2028 	mpt2host_config_page_ioc3(mpt->ioc_page3);
2029 	mpt_raid_wakeup(mpt);
2030 	return (0);
2031 }
2032 
2033 /*
2034  * Enable IOC port
2035  */
2036 static int
2037 mpt_send_port_enable(struct mpt_softc *mpt, int port)
2038 {
2039 	request_t	*req;
2040 	MSG_PORT_ENABLE *enable_req;
2041 	int		 error;
2042 
2043 	req = mpt_get_request(mpt, /*sleep_ok*/FALSE);
2044 	if (req == NULL)
2045 		return (-1);
2046 
2047 	enable_req = req->req_vbuf;
2048 	memset(enable_req, 0,  MPT_RQSL(mpt));
2049 
2050 	enable_req->Function   = MPI_FUNCTION_PORT_ENABLE;
2051 	enable_req->MsgContext = htole32(req->index | MPT_REPLY_HANDLER_CONFIG);
2052 	enable_req->PortNumber = port;
2053 
2054 	mpt_check_doorbell(mpt);
2055 	mpt_lprt(mpt, MPT_PRT_DEBUG, "enabling port %d\n", port);
2056 
2057 	mpt_send_cmd(mpt, req);
2058 	error = mpt_wait_req(mpt, req, REQ_STATE_DONE, REQ_STATE_DONE,
2059 	    FALSE, (mpt->is_sas || mpt->is_fc)? 30000 : 3000);
2060 	if (error != 0) {
2061 		mpt_prt(mpt, "port %d enable timed out\n", port);
2062 		return (-1);
2063 	}
2064 	mpt_free_request(mpt, req);
2065 	mpt_lprt(mpt, MPT_PRT_DEBUG, "enabled port %d\n", port);
2066 	return (0);
2067 }
2068 
2069 /*
2070  * Enable/Disable asynchronous event reporting.
2071  */
2072 static int
2073 mpt_send_event_request(struct mpt_softc *mpt, int onoff)
2074 {
2075 	request_t *req;
2076 	MSG_EVENT_NOTIFY *enable_req;
2077 
2078 	req = mpt_get_request(mpt, FALSE);
2079 	if (req == NULL) {
2080 		return (ENOMEM);
2081 	}
2082 	enable_req = req->req_vbuf;
2083 	memset(enable_req, 0, sizeof *enable_req);
2084 
2085 	enable_req->Function   = MPI_FUNCTION_EVENT_NOTIFICATION;
2086 	enable_req->MsgContext = htole32(req->index | MPT_REPLY_HANDLER_EVENTS);
2087 	enable_req->Switch     = onoff;
2088 
2089 	mpt_check_doorbell(mpt);
2090 	mpt_lprt(mpt, MPT_PRT_DEBUG, "%sabling async events\n",
2091 	    onoff ? "en" : "dis");
2092 	/*
2093 	 * Send the command off, but don't wait for it.
2094 	 */
2095 	mpt_send_cmd(mpt, req);
2096 	return (0);
2097 }
2098 
2099 /*
2100  * Un-mask the interrupts on the chip.
2101  */
2102 void
2103 mpt_enable_ints(struct mpt_softc *mpt)
2104 {
2105 	/* Unmask every thing except door bell int */
2106 	mpt_write(mpt, MPT_OFFSET_INTR_MASK, MPT_INTR_DB_MASK);
2107 }
2108 
2109 /*
2110  * Mask the interrupts on the chip.
2111  */
2112 void
2113 mpt_disable_ints(struct mpt_softc *mpt)
2114 {
2115 	/* Mask all interrupts */
2116 	mpt_write(mpt, MPT_OFFSET_INTR_MASK,
2117 	    MPT_INTR_REPLY_MASK | MPT_INTR_DB_MASK);
2118 }
2119 
2120 static void
2121 mpt_sysctl_attach(struct mpt_softc *mpt)
2122 {
2123 #if __FreeBSD_version >= 500000
2124 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(mpt->dev);
2125 	struct sysctl_oid *tree = device_get_sysctl_tree(mpt->dev);
2126 
2127 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
2128 		       "debug", CTLFLAG_RW, &mpt->verbose, 0,
2129 		       "Debugging/Verbose level");
2130 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
2131 		       "role", CTLFLAG_RD, &mpt->role, 0,
2132 		       "HBA role");
2133 #ifdef	MPT_TEST_MULTIPATH
2134 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
2135 		       "failure_id", CTLFLAG_RW, &mpt->failure_id, -1,
2136 		       "Next Target to Fail");
2137 #endif
2138 #endif
2139 }
2140 
2141 int
2142 mpt_attach(struct mpt_softc *mpt)
2143 {
2144 	struct mpt_personality *pers;
2145 	int i;
2146 	int error;
2147 
2148 	mpt_core_attach(mpt);
2149 	mpt_core_enable(mpt);
2150 
2151 	TAILQ_INSERT_TAIL(&mpt_tailq, mpt, links);
2152 	for (i = 0; i < MPT_MAX_PERSONALITIES; i++) {
2153 		pers = mpt_personalities[i];
2154 		if (pers == NULL) {
2155 			continue;
2156 		}
2157 		if (pers->probe(mpt) == 0) {
2158 			error = pers->attach(mpt);
2159 			if (error != 0) {
2160 				mpt_detach(mpt);
2161 				return (error);
2162 			}
2163 			mpt->mpt_pers_mask |= (0x1 << pers->id);
2164 			pers->use_count++;
2165 		}
2166 	}
2167 
2168 	/*
2169 	 * Now that we've attached everything, do the enable function
2170 	 * for all of the personalities. This allows the personalities
2171 	 * to do setups that are appropriate for them prior to enabling
2172 	 * any ports.
2173 	 */
2174 	for (i = 0; i < MPT_MAX_PERSONALITIES; i++) {
2175 		pers = mpt_personalities[i];
2176 		if (pers != NULL  && MPT_PERS_ATTACHED(pers, mpt) != 0) {
2177 			error = pers->enable(mpt);
2178 			if (error != 0) {
2179 				mpt_prt(mpt, "personality %s attached but would"
2180 				    " not enable (%d)\n", pers->name, error);
2181 				mpt_detach(mpt);
2182 				return (error);
2183 			}
2184 		}
2185 	}
2186 	return (0);
2187 }
2188 
2189 int
2190 mpt_shutdown(struct mpt_softc *mpt)
2191 {
2192 	struct mpt_personality *pers;
2193 
2194 	MPT_PERS_FOREACH_REVERSE(mpt, pers) {
2195 		pers->shutdown(mpt);
2196 	}
2197 	return (0);
2198 }
2199 
2200 int
2201 mpt_detach(struct mpt_softc *mpt)
2202 {
2203 	struct mpt_personality *pers;
2204 
2205 	MPT_PERS_FOREACH_REVERSE(mpt, pers) {
2206 		pers->detach(mpt);
2207 		mpt->mpt_pers_mask &= ~(0x1 << pers->id);
2208 		pers->use_count--;
2209 	}
2210 	TAILQ_REMOVE(&mpt_tailq, mpt, links);
2211 	return (0);
2212 }
2213 
2214 int
2215 mpt_core_load(struct mpt_personality *pers)
2216 {
2217 	int i;
2218 
2219 	/*
2220 	 * Setup core handlers and insert the default handler
2221 	 * into all "empty slots".
2222 	 */
2223 	for (i = 0; i < MPT_NUM_REPLY_HANDLERS; i++) {
2224 		mpt_reply_handlers[i] = mpt_default_reply_handler;
2225 	}
2226 
2227 	mpt_reply_handlers[MPT_CBI(MPT_REPLY_HANDLER_EVENTS)] =
2228 	    mpt_event_reply_handler;
2229 	mpt_reply_handlers[MPT_CBI(MPT_REPLY_HANDLER_CONFIG)] =
2230 	    mpt_config_reply_handler;
2231 	mpt_reply_handlers[MPT_CBI(MPT_REPLY_HANDLER_HANDSHAKE)] =
2232 	    mpt_handshake_reply_handler;
2233 	return (0);
2234 }
2235 
2236 /*
2237  * Initialize per-instance driver data and perform
2238  * initial controller configuration.
2239  */
2240 int
2241 mpt_core_attach(struct mpt_softc *mpt)
2242 {
2243         int val, error;
2244 
2245 	LIST_INIT(&mpt->ack_frames);
2246 	/* Put all request buffers on the free list */
2247 	TAILQ_INIT(&mpt->request_pending_list);
2248 	TAILQ_INIT(&mpt->request_free_list);
2249 	TAILQ_INIT(&mpt->request_timeout_list);
2250 	for (val = 0; val < MPT_MAX_LUNS; val++) {
2251 		STAILQ_INIT(&mpt->trt[val].atios);
2252 		STAILQ_INIT(&mpt->trt[val].inots);
2253 	}
2254 	STAILQ_INIT(&mpt->trt_wildcard.atios);
2255 	STAILQ_INIT(&mpt->trt_wildcard.inots);
2256 #ifdef	MPT_TEST_MULTIPATH
2257 	mpt->failure_id = -1;
2258 #endif
2259 	mpt->scsi_tgt_handler_id = MPT_HANDLER_ID_NONE;
2260 	mpt_sysctl_attach(mpt);
2261 	mpt_lprt(mpt, MPT_PRT_DEBUG, "doorbell req = %s\n",
2262 	    mpt_ioc_diag(mpt_read(mpt, MPT_OFFSET_DOORBELL)));
2263 
2264 	MPT_LOCK(mpt);
2265 	error = mpt_configure_ioc(mpt, 0, 0);
2266 	MPT_UNLOCK(mpt);
2267 
2268 	return (error);
2269 }
2270 
2271 int
2272 mpt_core_enable(struct mpt_softc *mpt)
2273 {
2274 	/*
2275 	 * We enter with the IOC enabled, but async events
2276 	 * not enabled, ports not enabled and interrupts
2277 	 * not enabled.
2278 	 */
2279 	MPT_LOCK(mpt);
2280 
2281 	/*
2282 	 * Enable asynchronous event reporting- all personalities
2283 	 * have attached so that they should be able to now field
2284 	 * async events.
2285 	 */
2286 	mpt_send_event_request(mpt, 1);
2287 
2288 	/*
2289 	 * Catch any pending interrupts
2290 	 *
2291 	 * This seems to be crucial- otherwise
2292 	 * the portenable below times out.
2293 	 */
2294 	mpt_intr(mpt);
2295 
2296 	/*
2297 	 * Enable Interrupts
2298 	 */
2299 	mpt_enable_ints(mpt);
2300 
2301 	/*
2302 	 * Catch any pending interrupts
2303 	 *
2304 	 * This seems to be crucial- otherwise
2305 	 * the portenable below times out.
2306 	 */
2307 	mpt_intr(mpt);
2308 
2309 	/*
2310 	 * Enable the port.
2311 	 */
2312 	if (mpt_send_port_enable(mpt, 0) != MPT_OK) {
2313 		mpt_prt(mpt, "failed to enable port 0\n");
2314 		MPT_UNLOCK(mpt);
2315 		return (ENXIO);
2316 	}
2317 	MPT_UNLOCK(mpt);
2318 	return (0);
2319 }
2320 
2321 void
2322 mpt_core_shutdown(struct mpt_softc *mpt)
2323 {
2324 	mpt_disable_ints(mpt);
2325 }
2326 
2327 void
2328 mpt_core_detach(struct mpt_softc *mpt)
2329 {
2330 	int val;
2331 
2332 	/*
2333 	 * XXX: FREE MEMORY
2334 	 */
2335 	mpt_disable_ints(mpt);
2336 
2337 	/* Make sure no request has pending timeouts. */
2338 	for (val = 0; val < MPT_MAX_REQUESTS(mpt); val++) {
2339 		request_t *req = &mpt->request_pool[val];
2340 		mpt_callout_drain(mpt, &req->callout);
2341 	}
2342 
2343 	mpt_dma_buf_free(mpt);
2344 }
2345 
2346 int
2347 mpt_core_unload(struct mpt_personality *pers)
2348 {
2349 	/* Unload is always successfull. */
2350 	return (0);
2351 }
2352 
2353 #define FW_UPLOAD_REQ_SIZE				\
2354 	(sizeof(MSG_FW_UPLOAD) - sizeof(SGE_MPI_UNION)	\
2355        + sizeof(FW_UPLOAD_TCSGE) + sizeof(SGE_SIMPLE32))
2356 
2357 static int
2358 mpt_upload_fw(struct mpt_softc *mpt)
2359 {
2360 	uint8_t fw_req_buf[FW_UPLOAD_REQ_SIZE];
2361 	MSG_FW_UPLOAD_REPLY fw_reply;
2362 	MSG_FW_UPLOAD *fw_req;
2363 	FW_UPLOAD_TCSGE *tsge;
2364 	SGE_SIMPLE32 *sge;
2365 	uint32_t flags;
2366 	int error;
2367 
2368 	memset(&fw_req_buf, 0, sizeof(fw_req_buf));
2369 	fw_req = (MSG_FW_UPLOAD *)fw_req_buf;
2370 	fw_req->ImageType = MPI_FW_UPLOAD_ITYPE_FW_IOC_MEM;
2371 	fw_req->Function = MPI_FUNCTION_FW_UPLOAD;
2372 	fw_req->MsgContext = htole32(MPT_REPLY_HANDLER_HANDSHAKE);
2373 	tsge = (FW_UPLOAD_TCSGE *)&fw_req->SGL;
2374 	tsge->DetailsLength = 12;
2375 	tsge->Flags = MPI_SGE_FLAGS_TRANSACTION_ELEMENT;
2376 	tsge->ImageSize = htole32(mpt->fw_image_size);
2377 	sge = (SGE_SIMPLE32 *)(tsge + 1);
2378 	flags = (MPI_SGE_FLAGS_LAST_ELEMENT | MPI_SGE_FLAGS_END_OF_BUFFER
2379 	      | MPI_SGE_FLAGS_END_OF_LIST | MPI_SGE_FLAGS_SIMPLE_ELEMENT
2380 	      | MPI_SGE_FLAGS_32_BIT_ADDRESSING | MPI_SGE_FLAGS_IOC_TO_HOST);
2381 	flags <<= MPI_SGE_FLAGS_SHIFT;
2382 	sge->FlagsLength = htole32(flags | mpt->fw_image_size);
2383 	sge->Address = htole32(mpt->fw_phys);
2384 	error = mpt_send_handshake_cmd(mpt, sizeof(fw_req_buf), &fw_req_buf);
2385 	if (error)
2386 		return(error);
2387 	error = mpt_recv_handshake_reply(mpt, sizeof(fw_reply), &fw_reply);
2388 	return (error);
2389 }
2390 
2391 static void
2392 mpt_diag_outsl(struct mpt_softc *mpt, uint32_t addr,
2393 	       uint32_t *data, bus_size_t len)
2394 {
2395 	uint32_t *data_end;
2396 
2397 	data_end = data + (roundup2(len, sizeof(uint32_t)) / 4);
2398 	if (mpt->is_sas) {
2399 		pci_enable_io(mpt->dev, SYS_RES_IOPORT);
2400 	}
2401 	mpt_pio_write(mpt, MPT_OFFSET_DIAG_ADDR, addr);
2402 	while (data != data_end) {
2403 		mpt_pio_write(mpt, MPT_OFFSET_DIAG_DATA, *data);
2404 		data++;
2405 	}
2406 	if (mpt->is_sas) {
2407 		pci_disable_io(mpt->dev, SYS_RES_IOPORT);
2408 	}
2409 }
2410 
2411 static int
2412 mpt_download_fw(struct mpt_softc *mpt)
2413 {
2414 	MpiFwHeader_t *fw_hdr;
2415 	int error;
2416 	uint32_t ext_offset;
2417 	uint32_t data;
2418 
2419 	mpt_prt(mpt, "Downloading Firmware - Image Size %d\n",
2420 		mpt->fw_image_size);
2421 
2422 	error = mpt_enable_diag_mode(mpt);
2423 	if (error != 0) {
2424 		mpt_prt(mpt, "Could not enter diagnostic mode!\n");
2425 		return (EIO);
2426 	}
2427 
2428 	mpt_write(mpt, MPT_OFFSET_DIAGNOSTIC,
2429 		  MPI_DIAG_RW_ENABLE|MPI_DIAG_DISABLE_ARM);
2430 
2431 	fw_hdr = (MpiFwHeader_t *)mpt->fw_image;
2432 	mpt_diag_outsl(mpt, fw_hdr->LoadStartAddress, (uint32_t*)fw_hdr,
2433 		       fw_hdr->ImageSize);
2434 
2435 	ext_offset = fw_hdr->NextImageHeaderOffset;
2436 	while (ext_offset != 0) {
2437 		MpiExtImageHeader_t *ext;
2438 
2439 		ext = (MpiExtImageHeader_t *)((uintptr_t)fw_hdr + ext_offset);
2440 		ext_offset = ext->NextImageHeaderOffset;
2441 
2442 		mpt_diag_outsl(mpt, ext->LoadStartAddress, (uint32_t*)ext,
2443 			       ext->ImageSize);
2444 	}
2445 
2446 	if (mpt->is_sas) {
2447 		pci_enable_io(mpt->dev, SYS_RES_IOPORT);
2448 	}
2449 	/* Setup the address to jump to on reset. */
2450 	mpt_pio_write(mpt, MPT_OFFSET_DIAG_ADDR, fw_hdr->IopResetRegAddr);
2451 	mpt_pio_write(mpt, MPT_OFFSET_DIAG_DATA, fw_hdr->IopResetVectorValue);
2452 
2453 	/*
2454 	 * The controller sets the "flash bad" status after attempting
2455 	 * to auto-boot from flash.  Clear the status so that the controller
2456 	 * will continue the boot process with our newly installed firmware.
2457 	 */
2458 	mpt_pio_write(mpt, MPT_OFFSET_DIAG_ADDR, MPT_DIAG_MEM_CFG_BASE);
2459 	data = mpt_pio_read(mpt, MPT_OFFSET_DIAG_DATA) | MPT_DIAG_MEM_CFG_BADFL;
2460 	mpt_pio_write(mpt, MPT_OFFSET_DIAG_ADDR, MPT_DIAG_MEM_CFG_BASE);
2461 	mpt_pio_write(mpt, MPT_OFFSET_DIAG_DATA, data);
2462 
2463 	if (mpt->is_sas) {
2464 		pci_disable_io(mpt->dev, SYS_RES_IOPORT);
2465 	}
2466 
2467 	/*
2468 	 * Re-enable the processor and clear the boot halt flag.
2469 	 */
2470 	data = mpt_read(mpt, MPT_OFFSET_DIAGNOSTIC);
2471 	data &= ~(MPI_DIAG_PREVENT_IOC_BOOT|MPI_DIAG_DISABLE_ARM);
2472 	mpt_write(mpt, MPT_OFFSET_DIAGNOSTIC, data);
2473 
2474 	mpt_disable_diag_mode(mpt);
2475 	return (0);
2476 }
2477 
2478 int
2479 mpt_dma_buf_alloc(struct mpt_softc *mpt)
2480 {
2481 	struct mpt_map_info mi;
2482 	uint8_t *vptr;
2483 	uint32_t pptr, end;
2484 	int i, error;
2485 
2486 	/* Create a child tag for data buffers */
2487 	if (mpt_dma_tag_create(mpt, mpt->parent_dmat, 1,
2488 	    0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2489 	    NULL, NULL, MAXBSIZE, mpt->max_cam_seg_cnt,
2490 	    BUS_SPACE_MAXSIZE_32BIT, 0, &mpt->buffer_dmat) != 0) {
2491 		mpt_prt(mpt, "cannot create a dma tag for data buffers\n");
2492 		return (1);
2493 	}
2494 
2495 	/* Create a child tag for request buffers */
2496 	if (mpt_dma_tag_create(mpt, mpt->parent_dmat, PAGE_SIZE, 0,
2497 	    BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
2498 	    NULL, NULL, MPT_REQ_MEM_SIZE(mpt), 1, BUS_SPACE_MAXSIZE_32BIT, 0,
2499 	    &mpt->request_dmat) != 0) {
2500 		mpt_prt(mpt, "cannot create a dma tag for requests\n");
2501 		return (1);
2502 	}
2503 
2504 	/* Allocate some DMA accessable memory for requests */
2505 	if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request,
2506 	    BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) {
2507 		mpt_prt(mpt, "cannot allocate %d bytes of request memory\n",
2508 		    MPT_REQ_MEM_SIZE(mpt));
2509 		return (1);
2510 	}
2511 
2512 	mi.mpt = mpt;
2513 	mi.error = 0;
2514 
2515 	/* Load and lock it into "bus space" */
2516 	bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request,
2517 	    MPT_REQ_MEM_SIZE(mpt), mpt_map_rquest, &mi, 0);
2518 
2519 	if (mi.error) {
2520 		mpt_prt(mpt, "error %d loading dma map for DMA request queue\n",
2521 		    mi.error);
2522 		return (1);
2523 	}
2524 	mpt->request_phys = mi.phys;
2525 
2526 	/*
2527 	 * Now create per-request dma maps
2528 	 */
2529 	i = 0;
2530 	pptr =  mpt->request_phys;
2531 	vptr =  mpt->request;
2532 	end = pptr + MPT_REQ_MEM_SIZE(mpt);
2533 	while(pptr < end) {
2534 		request_t *req = &mpt->request_pool[i];
2535 		req->index = i++;
2536 
2537 		/* Store location of Request Data */
2538 		req->req_pbuf = pptr;
2539 		req->req_vbuf = vptr;
2540 
2541 		pptr += MPT_REQUEST_AREA;
2542 		vptr += MPT_REQUEST_AREA;
2543 
2544 		req->sense_pbuf = (pptr - MPT_SENSE_SIZE);
2545 		req->sense_vbuf = (vptr - MPT_SENSE_SIZE);
2546 
2547 		error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap);
2548 		if (error) {
2549 			mpt_prt(mpt, "error %d creating per-cmd DMA maps\n",
2550 			    error);
2551 			return (1);
2552 		}
2553 	}
2554 
2555 	return (0);
2556 }
2557 
2558 static void
2559 mpt_dma_buf_free(struct mpt_softc *mpt)
2560 {
2561 	int i;
2562 	if (mpt->request_dmat == 0) {
2563 		mpt_lprt(mpt, MPT_PRT_DEBUG, "already released dma memory\n");
2564 		return;
2565 	}
2566 	for (i = 0; i < MPT_MAX_REQUESTS(mpt); i++) {
2567 		bus_dmamap_destroy(mpt->buffer_dmat, mpt->request_pool[i].dmap);
2568 	}
2569 	bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap);
2570 	bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap);
2571 	bus_dma_tag_destroy(mpt->request_dmat);
2572 	mpt->request_dmat = 0;
2573 	bus_dma_tag_destroy(mpt->buffer_dmat);
2574 }
2575 
2576 /*
2577  * Allocate/Initialize data structures for the controller.  Called
2578  * once at instance startup.
2579  */
2580 static int
2581 mpt_configure_ioc(struct mpt_softc *mpt, int tn, int needreset)
2582 {
2583 	PTR_MSG_PORT_FACTS_REPLY pfp;
2584 	int error, port, val;
2585 	size_t len;
2586 
2587 	if (tn == MPT_MAX_TRYS) {
2588 		return (-1);
2589 	}
2590 
2591 	/*
2592 	 * No need to reset if the IOC is already in the READY state.
2593 	 *
2594 	 * Force reset if initialization failed previously.
2595 	 * Note that a hard_reset of the second channel of a '929
2596 	 * will stop operation of the first channel.  Hopefully, if the
2597 	 * first channel is ok, the second will not require a hard
2598 	 * reset.
2599 	 */
2600 	if (needreset || MPT_STATE(mpt_rd_db(mpt)) != MPT_DB_STATE_READY) {
2601 		if (mpt_reset(mpt, FALSE) != MPT_OK) {
2602 			return (mpt_configure_ioc(mpt, tn++, 1));
2603 		}
2604 		needreset = 0;
2605 	}
2606 
2607 	if (mpt_get_iocfacts(mpt, &mpt->ioc_facts) != MPT_OK) {
2608 		mpt_prt(mpt, "mpt_get_iocfacts failed\n");
2609 		return (mpt_configure_ioc(mpt, tn++, 1));
2610 	}
2611 	mpt2host_iocfacts_reply(&mpt->ioc_facts);
2612 
2613 	mpt_prt(mpt, "MPI Version=%d.%d.%d.%d\n",
2614 	    mpt->ioc_facts.MsgVersion >> 8,
2615 	    mpt->ioc_facts.MsgVersion & 0xFF,
2616 	    mpt->ioc_facts.HeaderVersion >> 8,
2617 	    mpt->ioc_facts.HeaderVersion & 0xFF);
2618 
2619 	/*
2620 	 * Now that we know request frame size, we can calculate
2621 	 * the actual (reasonable) segment limit for read/write I/O.
2622 	 *
2623 	 * This limit is constrained by:
2624 	 *
2625 	 *  + The size of each area we allocate per command (and how
2626 	 *    many chain segments we can fit into it).
2627 	 *  + The total number of areas we've set up.
2628 	 *  + The actual chain depth the card will allow.
2629 	 *
2630 	 * The first area's segment count is limited by the I/O request
2631 	 * at the head of it. We cannot allocate realistically more
2632 	 * than MPT_MAX_REQUESTS areas. Therefore, to account for both
2633 	 * conditions, we'll just start out with MPT_MAX_REQUESTS-2.
2634 	 *
2635 	 */
2636 	/* total number of request areas we (can) allocate */
2637 	mpt->max_seg_cnt = MPT_MAX_REQUESTS(mpt) - 2;
2638 
2639 	/* converted to the number of chain areas possible */
2640 	mpt->max_seg_cnt *= MPT_NRFM(mpt);
2641 
2642 	/* limited by the number of chain areas the card will support */
2643 	if (mpt->max_seg_cnt > mpt->ioc_facts.MaxChainDepth) {
2644 		mpt_lprt(mpt, MPT_PRT_INFO,
2645 		    "chain depth limited to %u (from %u)\n",
2646 		    mpt->ioc_facts.MaxChainDepth, mpt->max_seg_cnt);
2647 		mpt->max_seg_cnt = mpt->ioc_facts.MaxChainDepth;
2648 	}
2649 
2650 	/* converted to the number of simple sges in chain segments. */
2651 	mpt->max_seg_cnt *= (MPT_NSGL(mpt) - 1);
2652 
2653 	/*
2654 	 * Use this as the basis for reporting the maximum I/O size to CAM.
2655 	 */
2656 	mpt->max_cam_seg_cnt = min(mpt->max_seg_cnt, (MAXPHYS / PAGE_SIZE) + 1);
2657 
2658 	error = mpt_dma_buf_alloc(mpt);
2659 	if (error != 0) {
2660 		mpt_prt(mpt, "mpt_dma_buf_alloc() failed!\n");
2661 		return (EIO);
2662 	}
2663 
2664 	for (val = 0; val < MPT_MAX_REQUESTS(mpt); val++) {
2665 		request_t *req = &mpt->request_pool[val];
2666 		req->state = REQ_STATE_ALLOCATED;
2667 		mpt_callout_init(mpt, &req->callout);
2668 		mpt_free_request(mpt, req);
2669 	}
2670 
2671 	mpt_lprt(mpt, MPT_PRT_INFO, "Maximum Segment Count: %u, Maximum "
2672 		 "CAM Segment Count: %u\n", mpt->max_seg_cnt,
2673 		 mpt->max_cam_seg_cnt);
2674 
2675 	mpt_lprt(mpt, MPT_PRT_INFO, "MsgLength=%u IOCNumber = %d\n",
2676 	    mpt->ioc_facts.MsgLength, mpt->ioc_facts.IOCNumber);
2677 	mpt_lprt(mpt, MPT_PRT_INFO,
2678 	    "IOCFACTS: GlobalCredits=%d BlockSize=%u bytes "
2679 	    "Request Frame Size %u bytes Max Chain Depth %u\n",
2680 	    mpt->ioc_facts.GlobalCredits, mpt->ioc_facts.BlockSize,
2681 	    mpt->ioc_facts.RequestFrameSize << 2,
2682 	    mpt->ioc_facts.MaxChainDepth);
2683 	mpt_lprt(mpt, MPT_PRT_INFO, "IOCFACTS: Num Ports %d, FWImageSize %d, "
2684 	    "Flags=%#x\n", mpt->ioc_facts.NumberOfPorts,
2685 	    mpt->ioc_facts.FWImageSize, mpt->ioc_facts.Flags);
2686 
2687 	len = mpt->ioc_facts.NumberOfPorts * sizeof (MSG_PORT_FACTS_REPLY);
2688 	mpt->port_facts = malloc(len, M_DEVBUF, M_NOWAIT | M_ZERO);
2689 	if (mpt->port_facts == NULL) {
2690 		mpt_prt(mpt, "unable to allocate memory for port facts\n");
2691 		return (ENOMEM);
2692 	}
2693 
2694 
2695 	if ((mpt->ioc_facts.Flags & MPI_IOCFACTS_FLAGS_FW_DOWNLOAD_BOOT) &&
2696 	    (mpt->fw_uploaded == 0)) {
2697 		struct mpt_map_info mi;
2698 
2699 		/*
2700 		 * In some configurations, the IOC's firmware is
2701 		 * stored in a shared piece of system NVRAM that
2702 		 * is only accessable via the BIOS.  In this
2703 		 * case, the firmware keeps a copy of firmware in
2704 		 * RAM until the OS driver retrieves it.  Once
2705 		 * retrieved, we are responsible for re-downloading
2706 		 * the firmware after any hard-reset.
2707 		 */
2708 		mpt->fw_image_size = mpt->ioc_facts.FWImageSize;
2709 		error = mpt_dma_tag_create(mpt, mpt->parent_dmat, 1, 0,
2710 		    BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
2711 		    mpt->fw_image_size, 1, mpt->fw_image_size, 0,
2712 		    &mpt->fw_dmat);
2713 		if (error != 0) {
2714 			mpt_prt(mpt, "cannot create firmwarew dma tag\n");
2715 			return (ENOMEM);
2716 		}
2717 		error = bus_dmamem_alloc(mpt->fw_dmat,
2718 		    (void **)&mpt->fw_image, BUS_DMA_NOWAIT, &mpt->fw_dmap);
2719 		if (error != 0) {
2720 			mpt_prt(mpt, "cannot allocate firmware memory\n");
2721 			bus_dma_tag_destroy(mpt->fw_dmat);
2722 			return (ENOMEM);
2723 		}
2724 		mi.mpt = mpt;
2725 		mi.error = 0;
2726 		bus_dmamap_load(mpt->fw_dmat, mpt->fw_dmap,
2727 		    mpt->fw_image, mpt->fw_image_size, mpt_map_rquest, &mi, 0);
2728 		mpt->fw_phys = mi.phys;
2729 
2730 		error = mpt_upload_fw(mpt);
2731 		if (error != 0) {
2732 			mpt_prt(mpt, "firmware upload failed.\n");
2733 			bus_dmamap_unload(mpt->fw_dmat, mpt->fw_dmap);
2734 			bus_dmamem_free(mpt->fw_dmat, mpt->fw_image,
2735 			    mpt->fw_dmap);
2736 			bus_dma_tag_destroy(mpt->fw_dmat);
2737 			mpt->fw_image = NULL;
2738 			return (EIO);
2739 		}
2740 		mpt->fw_uploaded = 1;
2741 	}
2742 
2743 	for (port = 0; port < mpt->ioc_facts.NumberOfPorts; port++) {
2744 		pfp = &mpt->port_facts[port];
2745 		error = mpt_get_portfacts(mpt, 0, pfp);
2746 		if (error != MPT_OK) {
2747 			mpt_prt(mpt,
2748 			    "mpt_get_portfacts on port %d failed\n", port);
2749 			free(mpt->port_facts, M_DEVBUF);
2750 			mpt->port_facts = NULL;
2751 			return (mpt_configure_ioc(mpt, tn++, 1));
2752 		}
2753 		mpt2host_portfacts_reply(pfp);
2754 
2755 		if (port > 0) {
2756 			error = MPT_PRT_INFO;
2757 		} else {
2758 			error = MPT_PRT_DEBUG;
2759 		}
2760 		mpt_lprt(mpt, error,
2761 		    "PORTFACTS[%d]: Type %x PFlags %x IID %d MaxDev %d\n",
2762 		    port, pfp->PortType, pfp->ProtocolFlags, pfp->PortSCSIID,
2763 		    pfp->MaxDevices);
2764 
2765 	}
2766 
2767 	/*
2768 	 * XXX: Not yet supporting more than port 0
2769 	 */
2770 	pfp = &mpt->port_facts[0];
2771 	if (pfp->PortType == MPI_PORTFACTS_PORTTYPE_FC) {
2772 		mpt->is_fc = 1;
2773 		mpt->is_sas = 0;
2774 		mpt->is_spi = 0;
2775 	} else if (pfp->PortType == MPI_PORTFACTS_PORTTYPE_SAS) {
2776 		mpt->is_fc = 0;
2777 		mpt->is_sas = 1;
2778 		mpt->is_spi = 0;
2779 	} else if (pfp->PortType == MPI_PORTFACTS_PORTTYPE_SCSI) {
2780 		mpt->is_fc = 0;
2781 		mpt->is_sas = 0;
2782 		mpt->is_spi = 1;
2783 		if (mpt->mpt_ini_id == MPT_INI_ID_NONE)
2784 			mpt->mpt_ini_id = pfp->PortSCSIID;
2785 	} else if (pfp->PortType == MPI_PORTFACTS_PORTTYPE_ISCSI) {
2786 		mpt_prt(mpt, "iSCSI not supported yet\n");
2787 		return (ENXIO);
2788 	} else if (pfp->PortType == MPI_PORTFACTS_PORTTYPE_INACTIVE) {
2789 		mpt_prt(mpt, "Inactive Port\n");
2790 		return (ENXIO);
2791 	} else {
2792 		mpt_prt(mpt, "unknown Port Type %#x\n", pfp->PortType);
2793 		return (ENXIO);
2794 	}
2795 
2796 	/*
2797 	 * Set our role with what this port supports.
2798 	 *
2799 	 * Note this might be changed later in different modules
2800 	 * if this is different from what is wanted.
2801 	 */
2802 	mpt->role = MPT_ROLE_NONE;
2803 	if (pfp->ProtocolFlags & MPI_PORTFACTS_PROTOCOL_INITIATOR) {
2804 		mpt->role |= MPT_ROLE_INITIATOR;
2805 	}
2806 	if (pfp->ProtocolFlags & MPI_PORTFACTS_PROTOCOL_TARGET) {
2807 		mpt->role |= MPT_ROLE_TARGET;
2808 	}
2809 
2810 	/*
2811 	 * Enable the IOC
2812 	 */
2813 	if (mpt_enable_ioc(mpt, 1) != MPT_OK) {
2814 		mpt_prt(mpt, "unable to initialize IOC\n");
2815 		return (ENXIO);
2816 	}
2817 
2818 	/*
2819 	 * Read IOC configuration information.
2820 	 *
2821 	 * We need this to determine whether or not we have certain
2822 	 * settings for Integrated Mirroring (e.g.).
2823 	 */
2824 	mpt_read_config_info_ioc(mpt);
2825 
2826 	return (0);
2827 }
2828 
2829 static int
2830 mpt_enable_ioc(struct mpt_softc *mpt, int portenable)
2831 {
2832 	uint32_t pptr;
2833 	int val;
2834 
2835 	if (mpt_send_ioc_init(mpt, MPI_WHOINIT_HOST_DRIVER) != MPT_OK) {
2836 		mpt_prt(mpt, "mpt_send_ioc_init failed\n");
2837 		return (EIO);
2838 	}
2839 
2840 	mpt_lprt(mpt, MPT_PRT_DEBUG, "mpt_send_ioc_init ok\n");
2841 
2842 	if (mpt_wait_state(mpt, MPT_DB_STATE_RUNNING) != MPT_OK) {
2843 		mpt_prt(mpt, "IOC failed to go to run state\n");
2844 		return (ENXIO);
2845 	}
2846 	mpt_lprt(mpt, MPT_PRT_DEBUG, "IOC now at RUNSTATE\n");
2847 
2848 	/*
2849 	 * Give it reply buffers
2850 	 *
2851 	 * Do *not* exceed global credits.
2852 	 */
2853 	for (val = 0, pptr = mpt->reply_phys;
2854 	    (pptr + MPT_REPLY_SIZE) < (mpt->reply_phys + PAGE_SIZE);
2855 	     pptr += MPT_REPLY_SIZE) {
2856 		mpt_free_reply(mpt, pptr);
2857 		if (++val == mpt->ioc_facts.GlobalCredits - 1)
2858 			break;
2859 	}
2860 
2861 
2862 	/*
2863 	 * Enable the port if asked. This is only done if we're resetting
2864 	 * the IOC after initial startup.
2865 	 */
2866 	if (portenable) {
2867 		/*
2868 		 * Enable asynchronous event reporting
2869 		 */
2870 		mpt_send_event_request(mpt, 1);
2871 
2872 		if (mpt_send_port_enable(mpt, 0) != MPT_OK) {
2873 			mpt_prt(mpt, "%s: failed to enable port 0\n", __func__);
2874 			return (ENXIO);
2875 		}
2876 	}
2877 	return (MPT_OK);
2878 }
2879 
2880 /*
2881  * Endian Conversion Functions- only used on Big Endian machines
2882  */
2883 #if	_BYTE_ORDER == _BIG_ENDIAN
2884 void
2885 mpt2host_sge_simple_union(SGE_SIMPLE_UNION *sge)
2886 {
2887 
2888 	MPT_2_HOST32(sge, FlagsLength);
2889 	MPT_2_HOST32(sge, u.Address64.Low);
2890 	MPT_2_HOST32(sge, u.Address64.High);
2891 }
2892 
2893 void
2894 mpt2host_iocfacts_reply(MSG_IOC_FACTS_REPLY *rp)
2895 {
2896 
2897 	MPT_2_HOST16(rp, MsgVersion);
2898 	MPT_2_HOST16(rp, HeaderVersion);
2899 	MPT_2_HOST32(rp, MsgContext);
2900 	MPT_2_HOST16(rp, IOCExceptions);
2901 	MPT_2_HOST16(rp, IOCStatus);
2902 	MPT_2_HOST32(rp, IOCLogInfo);
2903 	MPT_2_HOST16(rp, ReplyQueueDepth);
2904 	MPT_2_HOST16(rp, RequestFrameSize);
2905 	MPT_2_HOST16(rp, Reserved_0101_FWVersion);
2906 	MPT_2_HOST16(rp, ProductID);
2907 	MPT_2_HOST32(rp, CurrentHostMfaHighAddr);
2908 	MPT_2_HOST16(rp, GlobalCredits);
2909 	MPT_2_HOST32(rp, CurrentSenseBufferHighAddr);
2910 	MPT_2_HOST16(rp, CurReplyFrameSize);
2911 	MPT_2_HOST32(rp, FWImageSize);
2912 	MPT_2_HOST32(rp, IOCCapabilities);
2913 	MPT_2_HOST32(rp, FWVersion.Word);
2914 	MPT_2_HOST16(rp, HighPriorityQueueDepth);
2915 	MPT_2_HOST16(rp, Reserved2);
2916 	mpt2host_sge_simple_union(&rp->HostPageBufferSGE);
2917 	MPT_2_HOST32(rp, ReplyFifoHostSignalingAddr);
2918 }
2919 
2920 void
2921 mpt2host_portfacts_reply(MSG_PORT_FACTS_REPLY *pfp)
2922 {
2923 
2924 	MPT_2_HOST16(pfp, Reserved);
2925 	MPT_2_HOST16(pfp, Reserved1);
2926 	MPT_2_HOST32(pfp, MsgContext);
2927 	MPT_2_HOST16(pfp, Reserved2);
2928 	MPT_2_HOST16(pfp, IOCStatus);
2929 	MPT_2_HOST32(pfp, IOCLogInfo);
2930 	MPT_2_HOST16(pfp, MaxDevices);
2931 	MPT_2_HOST16(pfp, PortSCSIID);
2932 	MPT_2_HOST16(pfp, ProtocolFlags);
2933 	MPT_2_HOST16(pfp, MaxPostedCmdBuffers);
2934 	MPT_2_HOST16(pfp, MaxPersistentIDs);
2935 	MPT_2_HOST16(pfp, MaxLanBuckets);
2936 	MPT_2_HOST16(pfp, Reserved4);
2937 	MPT_2_HOST32(pfp, Reserved5);
2938 }
2939 
2940 void
2941 mpt2host_config_page_ioc2(CONFIG_PAGE_IOC_2 *ioc2)
2942 {
2943 	int i;
2944 
2945 	MPT_2_HOST32(ioc2, CapabilitiesFlags);
2946 	for (i = 0; i < MPI_IOC_PAGE_2_RAID_VOLUME_MAX; i++) {
2947 		MPT_2_HOST16(ioc2, RaidVolume[i].Reserved3);
2948 	}
2949 }
2950 
2951 void
2952 mpt2host_config_page_ioc3(CONFIG_PAGE_IOC_3 *ioc3)
2953 {
2954 
2955 	MPT_2_HOST16(ioc3, Reserved2);
2956 }
2957 
2958 void
2959 mpt2host_config_page_scsi_port_0(CONFIG_PAGE_SCSI_PORT_0 *sp0)
2960 {
2961 
2962 	MPT_2_HOST32(sp0, Capabilities);
2963 	MPT_2_HOST32(sp0, PhysicalInterface);
2964 }
2965 
2966 void
2967 mpt2host_config_page_scsi_port_1(CONFIG_PAGE_SCSI_PORT_1 *sp1)
2968 {
2969 
2970 	MPT_2_HOST32(sp1, Configuration);
2971 	MPT_2_HOST32(sp1, OnBusTimerValue);
2972 	MPT_2_HOST16(sp1, IDConfig);
2973 }
2974 
2975 void
2976 host2mpt_config_page_scsi_port_1(CONFIG_PAGE_SCSI_PORT_1 *sp1)
2977 {
2978 
2979 	HOST_2_MPT32(sp1, Configuration);
2980 	HOST_2_MPT32(sp1, OnBusTimerValue);
2981 	HOST_2_MPT16(sp1, IDConfig);
2982 }
2983 
2984 void
2985 mpt2host_config_page_scsi_port_2(CONFIG_PAGE_SCSI_PORT_2 *sp2)
2986 {
2987 	int i;
2988 
2989 	MPT_2_HOST32(sp2, PortFlags);
2990 	MPT_2_HOST32(sp2, PortSettings);
2991 	for (i = 0; i < sizeof(sp2->DeviceSettings) /
2992 	    sizeof(*sp2->DeviceSettings); i++) {
2993 		MPT_2_HOST16(sp2, DeviceSettings[i].DeviceFlags);
2994 	}
2995 }
2996 
2997 void
2998 mpt2host_config_page_scsi_device_0(CONFIG_PAGE_SCSI_DEVICE_0 *sd0)
2999 {
3000 
3001 	MPT_2_HOST32(sd0, NegotiatedParameters);
3002 	MPT_2_HOST32(sd0, Information);
3003 }
3004 
3005 void
3006 mpt2host_config_page_scsi_device_1(CONFIG_PAGE_SCSI_DEVICE_1 *sd1)
3007 {
3008 
3009 	MPT_2_HOST32(sd1, RequestedParameters);
3010 	MPT_2_HOST32(sd1, Reserved);
3011 	MPT_2_HOST32(sd1, Configuration);
3012 }
3013 
3014 void
3015 host2mpt_config_page_scsi_device_1(CONFIG_PAGE_SCSI_DEVICE_1 *sd1)
3016 {
3017 
3018 	HOST_2_MPT32(sd1, RequestedParameters);
3019 	HOST_2_MPT32(sd1, Reserved);
3020 	HOST_2_MPT32(sd1, Configuration);
3021 }
3022 
3023 void
3024 mpt2host_config_page_fc_port_0(CONFIG_PAGE_FC_PORT_0 *fp0)
3025 {
3026 
3027 	MPT_2_HOST32(fp0, Flags);
3028 	MPT_2_HOST32(fp0, PortIdentifier);
3029 	MPT_2_HOST32(fp0, WWNN.Low);
3030 	MPT_2_HOST32(fp0, WWNN.High);
3031 	MPT_2_HOST32(fp0, WWPN.Low);
3032 	MPT_2_HOST32(fp0, WWPN.High);
3033 	MPT_2_HOST32(fp0, SupportedServiceClass);
3034 	MPT_2_HOST32(fp0, SupportedSpeeds);
3035 	MPT_2_HOST32(fp0, CurrentSpeed);
3036 	MPT_2_HOST32(fp0, MaxFrameSize);
3037 	MPT_2_HOST32(fp0, FabricWWNN.Low);
3038 	MPT_2_HOST32(fp0, FabricWWNN.High);
3039 	MPT_2_HOST32(fp0, FabricWWPN.Low);
3040 	MPT_2_HOST32(fp0, FabricWWPN.High);
3041 	MPT_2_HOST32(fp0, DiscoveredPortsCount);
3042 	MPT_2_HOST32(fp0, MaxInitiators);
3043 }
3044 
3045 void
3046 mpt2host_config_page_fc_port_1(CONFIG_PAGE_FC_PORT_1 *fp1)
3047 {
3048 
3049 	MPT_2_HOST32(fp1, Flags);
3050 	MPT_2_HOST32(fp1, NoSEEPROMWWNN.Low);
3051 	MPT_2_HOST32(fp1, NoSEEPROMWWNN.High);
3052 	MPT_2_HOST32(fp1, NoSEEPROMWWPN.Low);
3053 	MPT_2_HOST32(fp1, NoSEEPROMWWPN.High);
3054 }
3055 
3056 void
3057 host2mpt_config_page_fc_port_1(CONFIG_PAGE_FC_PORT_1 *fp1)
3058 {
3059 
3060 	HOST_2_MPT32(fp1, Flags);
3061 	HOST_2_MPT32(fp1, NoSEEPROMWWNN.Low);
3062 	HOST_2_MPT32(fp1, NoSEEPROMWWNN.High);
3063 	HOST_2_MPT32(fp1, NoSEEPROMWWPN.Low);
3064 	HOST_2_MPT32(fp1, NoSEEPROMWWPN.High);
3065 }
3066 
3067 void
3068 mpt2host_config_page_raid_vol_0(CONFIG_PAGE_RAID_VOL_0 *volp)
3069 {
3070 	int i;
3071 
3072 	MPT_2_HOST16(volp, VolumeStatus.Reserved);
3073 	MPT_2_HOST16(volp, VolumeSettings.Settings);
3074 	MPT_2_HOST32(volp, MaxLBA);
3075 	MPT_2_HOST32(volp, MaxLBAHigh);
3076 	MPT_2_HOST32(volp, StripeSize);
3077 	MPT_2_HOST32(volp, Reserved2);
3078 	MPT_2_HOST32(volp, Reserved3);
3079 	for (i = 0; i < MPI_RAID_VOL_PAGE_0_PHYSDISK_MAX; i++) {
3080 		MPT_2_HOST16(volp, PhysDisk[i].Reserved);
3081 	}
3082 }
3083 
3084 void
3085 mpt2host_config_page_raid_phys_disk_0(CONFIG_PAGE_RAID_PHYS_DISK_0 *rpd0)
3086 {
3087 
3088 	MPT_2_HOST32(rpd0, Reserved1);
3089 	MPT_2_HOST16(rpd0, PhysDiskStatus.Reserved);
3090 	MPT_2_HOST32(rpd0, MaxLBA);
3091 	MPT_2_HOST16(rpd0, ErrorData.Reserved);
3092 	MPT_2_HOST16(rpd0, ErrorData.ErrorCount);
3093 	MPT_2_HOST16(rpd0, ErrorData.SmartCount);
3094 }
3095 
3096 void
3097 mpt2host_mpi_raid_vol_indicator(MPI_RAID_VOL_INDICATOR *vi)
3098 {
3099 
3100 	MPT_2_HOST16(vi, TotalBlocks.High);
3101 	MPT_2_HOST16(vi, TotalBlocks.Low);
3102 	MPT_2_HOST16(vi, BlocksRemaining.High);
3103 	MPT_2_HOST16(vi, BlocksRemaining.Low);
3104 }
3105 #endif
3106