xref: /dragonfly/sys/dev/disk/mpt/mpt_cam.c (revision dcd37f7d)
1 /*-
2  * FreeBSD/CAM specific routines for LSI '909 FC  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  * Support from LSI-Logic has also gone a great deal toward making this a
62  * workable subsystem and is gratefully acknowledged.
63  */
64 /*-
65  * Copyright (c) 2004, Avid Technology, Inc. and its contributors.
66  * Copyright (c) 2005, WHEEL Sp. z o.o.
67  * Copyright (c) 2004, 2005 Justin T. Gibbs
68  * All rights reserved.
69  *
70  * Redistribution and use in source and binary forms, with or without
71  * modification, are permitted provided that the following conditions are
72  * met:
73  * 1. Redistributions of source code must retain the above copyright
74  *    notice, this list of conditions and the following disclaimer.
75  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
76  *    substantially similar to the "NO WARRANTY" disclaimer below
77  *    ("Disclaimer") and any redistribution must be conditioned upon including
78  *    a substantially similar Disclaimer requirement for further binary
79  *    redistribution.
80  * 3. Neither the names of the above listed copyright holders nor the names
81  *    of any contributors may be used to endorse or promote products derived
82  *    from this software without specific prior written permission.
83  *
84  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
85  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
86  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
87  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
88  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
89  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
90  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
91  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
92  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
93  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
94  * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
95  *
96  * $FreeBSD: src/sys/dev/mpt/mpt_cam.c,v 1.68 2009/07/02 00:43:10 delphij Exp $
97  */
98 
99 #include <dev/disk/mpt/mpt.h>
100 #include <dev/disk/mpt/mpt_cam.h>
101 #include <dev/disk/mpt/mpt_raid.h>
102 
103 #include "dev/disk/mpt/mpilib/mpi_ioc.h" /* XXX Fix Event Handling!!! */
104 #include "dev/disk/mpt/mpilib/mpi_init.h"
105 #include "dev/disk/mpt/mpilib/mpi_targ.h"
106 #include "dev/disk/mpt/mpilib/mpi_fc.h"
107 #include "dev/disk/mpt/mpilib/mpi_sas.h"
108 #if __FreeBSD_version >= 500000
109 #include <sys/sysctl.h>
110 #endif
111 #include <sys/callout.h>
112 #include <sys/kthread.h>
113 
114 #if __FreeBSD_version >= 700025 || defined(__DragonFly__)
115 #ifndef	CAM_NEW_TRAN_CODE
116 #define	CAM_NEW_TRAN_CODE	1
117 #endif
118 #endif
119 
120 static void mpt_poll(struct cam_sim *);
121 static timeout_t mpt_timeout;
122 static void mpt_action(struct cam_sim *, union ccb *);
123 static int
124 mpt_get_spi_settings(struct mpt_softc *, struct ccb_trans_settings *);
125 static void mpt_setwidth(struct mpt_softc *, int, int);
126 static void mpt_setsync(struct mpt_softc *, int, int, int);
127 static int mpt_update_spi_config(struct mpt_softc *, int);
128 static void mpt_calc_geometry(struct ccb_calc_geometry *ccg, int extended);
129 
130 static mpt_reply_handler_t mpt_scsi_reply_handler;
131 static mpt_reply_handler_t mpt_scsi_tmf_reply_handler;
132 static mpt_reply_handler_t mpt_fc_els_reply_handler;
133 static int mpt_scsi_reply_frame_handler(struct mpt_softc *, request_t *,
134 					MSG_DEFAULT_REPLY *);
135 static int mpt_bus_reset(struct mpt_softc *, target_id_t, lun_id_t, int);
136 static int mpt_fc_reset_link(struct mpt_softc *, int);
137 
138 static int mpt_spawn_recovery_thread(struct mpt_softc *mpt);
139 static void mpt_terminate_recovery_thread(struct mpt_softc *mpt);
140 static void mpt_recovery_thread(void *arg);
141 static void mpt_recover_commands(struct mpt_softc *mpt);
142 
143 static int mpt_scsi_send_tmf(struct mpt_softc *, u_int, u_int, u_int,
144     u_int, u_int, u_int, int);
145 
146 static void mpt_fc_post_els(struct mpt_softc *mpt, request_t *, int);
147 static void mpt_post_target_command(struct mpt_softc *, request_t *, int);
148 static int mpt_add_els_buffers(struct mpt_softc *mpt);
149 static int mpt_add_target_commands(struct mpt_softc *mpt);
150 static int mpt_enable_lun(struct mpt_softc *, target_id_t, lun_id_t);
151 static int mpt_disable_lun(struct mpt_softc *, target_id_t, lun_id_t);
152 static void mpt_target_start_io(struct mpt_softc *, union ccb *);
153 static cam_status mpt_abort_target_ccb(struct mpt_softc *, union ccb *);
154 static int mpt_abort_target_cmd(struct mpt_softc *, request_t *);
155 static void mpt_scsi_tgt_status(struct mpt_softc *, union ccb *, request_t *,
156     uint8_t, uint8_t const *);
157 static void
158 mpt_scsi_tgt_tsk_mgmt(struct mpt_softc *, request_t *, mpt_task_mgmt_t,
159     tgt_resource_t *, int);
160 static void mpt_tgt_dump_tgt_state(struct mpt_softc *, request_t *);
161 static void mpt_tgt_dump_req_state(struct mpt_softc *, request_t *);
162 static mpt_reply_handler_t mpt_scsi_tgt_reply_handler;
163 static mpt_reply_handler_t mpt_sata_pass_reply_handler;
164 
165 static uint32_t scsi_io_handler_id = MPT_HANDLER_ID_NONE;
166 static uint32_t scsi_tmf_handler_id = MPT_HANDLER_ID_NONE;
167 static uint32_t fc_els_handler_id = MPT_HANDLER_ID_NONE;
168 static uint32_t sata_pass_handler_id = MPT_HANDLER_ID_NONE;
169 
170 static mpt_probe_handler_t	mpt_cam_probe;
171 static mpt_attach_handler_t	mpt_cam_attach;
172 static mpt_enable_handler_t	mpt_cam_enable;
173 static mpt_ready_handler_t	mpt_cam_ready;
174 static mpt_event_handler_t	mpt_cam_event;
175 static mpt_reset_handler_t	mpt_cam_ioc_reset;
176 static mpt_detach_handler_t	mpt_cam_detach;
177 
178 static struct mpt_personality mpt_cam_personality =
179 {
180 	.name		= "mpt_cam",
181 	.probe		= mpt_cam_probe,
182 	.attach		= mpt_cam_attach,
183 	.enable		= mpt_cam_enable,
184 	.ready		= mpt_cam_ready,
185 	.event		= mpt_cam_event,
186 	.reset		= mpt_cam_ioc_reset,
187 	.detach		= mpt_cam_detach,
188 };
189 
190 DECLARE_MPT_PERSONALITY(mpt_cam, SI_ORDER_SECOND);
191 MODULE_DEPEND(mpt_cam, cam, 1, 1, 1);
192 
193 int mpt_enable_sata_wc = -1;
194 TUNABLE_INT("hw.mpt.enable_sata_wc", &mpt_enable_sata_wc);
195 
196 int
197 mpt_cam_probe(struct mpt_softc *mpt)
198 {
199 	int role;
200 
201 	/*
202 	 * Only attach to nodes that support the initiator or target role
203 	 * (or want to) or have RAID physical devices that need CAM pass-thru
204 	 * support.
205 	 */
206 	if (mpt->do_cfg_role) {
207 		role = mpt->cfg_role;
208 	} else {
209 		role = mpt->role;
210 	}
211 	if ((role & (MPT_ROLE_TARGET|MPT_ROLE_INITIATOR)) != 0 ||
212 	    (mpt->ioc_page2 != NULL && mpt->ioc_page2->MaxPhysDisks != 0)) {
213 		return (0);
214 	}
215 	return (ENODEV);
216 }
217 
218 int
219 mpt_cam_attach(struct mpt_softc *mpt)
220 {
221 	struct cam_devq *devq;
222 	mpt_handler_t	 handler;
223 	int		 maxq;
224 	int		 error;
225 
226 	MPT_LOCK(mpt);
227 	TAILQ_INIT(&mpt->request_timeout_list);
228 	maxq = (mpt->ioc_facts.GlobalCredits < MPT_MAX_REQUESTS(mpt))?
229 	    mpt->ioc_facts.GlobalCredits : MPT_MAX_REQUESTS(mpt);
230 
231 	handler.reply_handler = mpt_scsi_reply_handler;
232 	error = mpt_register_handler(mpt, MPT_HANDLER_REPLY, handler,
233 				     &scsi_io_handler_id);
234 	if (error != 0) {
235 		MPT_UNLOCK(mpt);
236 		goto cleanup;
237 	}
238 
239 	handler.reply_handler = mpt_scsi_tmf_reply_handler;
240 	error = mpt_register_handler(mpt, MPT_HANDLER_REPLY, handler,
241 				     &scsi_tmf_handler_id);
242 	if (error != 0) {
243 		MPT_UNLOCK(mpt);
244 		goto cleanup;
245 	}
246 
247 	/*
248 	 * If we're fibre channel and could support target mode, we register
249 	 * an ELS reply handler and give it resources.
250 	 */
251 	if (mpt->is_fc && (mpt->role & MPT_ROLE_TARGET) != 0) {
252 		handler.reply_handler = mpt_fc_els_reply_handler;
253 		error = mpt_register_handler(mpt, MPT_HANDLER_REPLY, handler,
254 		    &fc_els_handler_id);
255 		if (error != 0) {
256 			MPT_UNLOCK(mpt);
257 			goto cleanup;
258 		}
259 		if (mpt_add_els_buffers(mpt) == FALSE) {
260 			error = ENOMEM;
261 			MPT_UNLOCK(mpt);
262 			goto cleanup;
263 		}
264 		maxq -= mpt->els_cmds_allocated;
265 	}
266 
267 	/*
268 	 * If we support target mode, we register a reply handler for it,
269 	 * but don't add command resources until we actually enable target
270 	 * mode.
271 	 */
272 	if (mpt->is_fc && (mpt->role & MPT_ROLE_TARGET) != 0) {
273 		handler.reply_handler = mpt_scsi_tgt_reply_handler;
274 		error = mpt_register_handler(mpt, MPT_HANDLER_REPLY, handler,
275 		    &mpt->scsi_tgt_handler_id);
276 		if (error != 0) {
277 			MPT_UNLOCK(mpt);
278 			goto cleanup;
279 		}
280 	}
281 
282 	if (mpt->is_sas) {
283 		handler.reply_handler = mpt_sata_pass_reply_handler;
284 		error = mpt_register_handler(mpt, MPT_HANDLER_REPLY, handler,
285 		    &sata_pass_handler_id);
286 		if (error != 0) {
287 			MPT_UNLOCK(mpt);
288 			goto cleanup;
289 		}
290 	}
291 
292 	/*
293 	 * We keep one request reserved for timeout TMF requests.
294 	 */
295 	mpt->tmf_req = mpt_get_request(mpt, FALSE);
296 	if (mpt->tmf_req == NULL) {
297 		mpt_prt(mpt, "Unable to allocate dedicated TMF request!\n");
298 		error = ENOMEM;
299 		MPT_UNLOCK(mpt);
300 		goto cleanup;
301 	}
302 
303 	/*
304 	 * Mark the request as free even though not on the free list.
305 	 * There is only one TMF request allowed to be outstanding at
306 	 * a time and the TMF routines perform their own allocation
307 	 * tracking using the standard state flags.
308 	 */
309 	mpt->tmf_req->state = REQ_STATE_FREE;
310 	maxq--;
311 
312 	/*
313 	 * The rest of this is CAM foo, for which we need to drop our lock
314 	 */
315 	MPT_UNLOCK(mpt);
316 
317 	if (mpt_spawn_recovery_thread(mpt) != 0) {
318 		mpt_prt(mpt, "Unable to spawn recovery thread!\n");
319 		error = ENOMEM;
320 		goto cleanup;
321 	}
322 
323 	/*
324 	 * Create the device queue for our SIM(s).
325 	 */
326 	devq = cam_simq_alloc(maxq);
327 	if (devq == NULL) {
328 		mpt_prt(mpt, "Unable to allocate CAM SIMQ!\n");
329 		error = ENOMEM;
330 		goto cleanup;
331 	}
332 
333 	/*
334 	 * Construct our SIM entry.
335 	 */
336 	mpt->sim =
337 	    mpt_sim_alloc(mpt_action, mpt_poll, "mpt", mpt, 1, maxq, devq);
338 	if (mpt->sim == NULL) {
339 		mpt_prt(mpt, "Unable to allocate CAM SIM!\n");
340 		cam_devq_release(devq);
341 		error = ENOMEM;
342 		goto cleanup;
343 	}
344 
345 	/*
346 	 * Register exactly this bus.
347 	 */
348 	MPT_LOCK(mpt);
349 	if (mpt_xpt_bus_register(mpt->sim, mpt->dev, 0) != CAM_SUCCESS) {
350 		mpt_prt(mpt, "Bus registration Failed!\n");
351 		error = ENOMEM;
352 		MPT_UNLOCK(mpt);
353 		goto cleanup;
354 	}
355 
356 	if (xpt_create_path(&mpt->path, NULL, cam_sim_path(mpt->sim),
357 	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
358 		mpt_prt(mpt, "Unable to allocate Path!\n");
359 		error = ENOMEM;
360 		MPT_UNLOCK(mpt);
361 		goto cleanup;
362 	}
363 	MPT_UNLOCK(mpt);
364 
365 	/*
366 	 * Only register a second bus for RAID physical
367 	 * devices if the controller supports RAID.
368 	 */
369 	if (mpt->ioc_page2 == NULL || mpt->ioc_page2->MaxPhysDisks == 0) {
370 		return (0);
371 	}
372 
373 	/*
374 	 * Create a "bus" to export all hidden disks to CAM.
375 	 */
376 	mpt->phydisk_sim =
377 	    mpt_sim_alloc(mpt_action, mpt_poll, "mpt", mpt, 1, maxq, devq);
378 	if (mpt->phydisk_sim == NULL) {
379 		mpt_prt(mpt, "Unable to allocate Physical Disk CAM SIM!\n");
380 		error = ENOMEM;
381 		goto cleanup;
382 	}
383 
384 	/*
385 	 * Register this bus.
386 	 */
387 	MPT_LOCK(mpt);
388 	if (mpt_xpt_bus_register(mpt->phydisk_sim, mpt->dev, 1) !=
389 	    CAM_SUCCESS) {
390 		mpt_prt(mpt, "Physical Disk Bus registration Failed!\n");
391 		error = ENOMEM;
392 		MPT_UNLOCK(mpt);
393 		goto cleanup;
394 	}
395 
396 	if (xpt_create_path(&mpt->phydisk_path, NULL,
397 	    cam_sim_path(mpt->phydisk_sim),
398 	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
399 		mpt_prt(mpt, "Unable to allocate Physical Disk Path!\n");
400 		error = ENOMEM;
401 		MPT_UNLOCK(mpt);
402 		goto cleanup;
403 	}
404 	MPT_UNLOCK(mpt);
405 	mpt_lprt(mpt, MPT_PRT_DEBUG, "attached cam\n");
406 	return (0);
407 
408 cleanup:
409 	mpt_cam_detach(mpt);
410 	return (error);
411 }
412 
413 /*
414  * Read FC configuration information
415  */
416 static int
417 mpt_read_config_info_fc(struct mpt_softc *mpt)
418 {
419 	char *topology = NULL;
420 	int rv;
421 
422 	rv = mpt_read_cfg_header(mpt, MPI_CONFIG_PAGETYPE_FC_PORT, 0,
423 	    0, &mpt->mpt_fcport_page0.Header, FALSE, 5000);
424 	if (rv) {
425 		return (-1);
426 	}
427 	mpt_lprt(mpt, MPT_PRT_DEBUG, "FC Port Page 0 Header: %x %x %x %x\n",
428 		 mpt->mpt_fcport_page0.Header.PageVersion,
429 		 mpt->mpt_fcport_page0.Header.PageLength,
430 		 mpt->mpt_fcport_page0.Header.PageNumber,
431 		 mpt->mpt_fcport_page0.Header.PageType);
432 
433 
434 	rv = mpt_read_cur_cfg_page(mpt, 0, &mpt->mpt_fcport_page0.Header,
435 	    sizeof(mpt->mpt_fcport_page0), FALSE, 5000);
436 	if (rv) {
437 		mpt_prt(mpt, "failed to read FC Port Page 0\n");
438 		return (-1);
439 	}
440 	mpt2host_config_page_fc_port_0(&mpt->mpt_fcport_page0);
441 
442 	mpt->mpt_fcport_speed = mpt->mpt_fcport_page0.CurrentSpeed;
443 
444 	switch (mpt->mpt_fcport_page0.Flags &
445 	    MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK) {
446 	case MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT:
447 		mpt->mpt_fcport_speed = 0;
448 		topology = "<NO LOOP>";
449 		break;
450 	case MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT:
451 		topology = "N-Port";
452 		break;
453 	case MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP:
454 		topology = "NL-Port";
455 		break;
456 	case MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT:
457 		topology = "F-Port";
458 		break;
459 	case MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP:
460 		topology = "FL-Port";
461 		break;
462 	default:
463 		mpt->mpt_fcport_speed = 0;
464 		topology = "?";
465 		break;
466 	}
467 
468 	mpt_lprt(mpt, MPT_PRT_INFO,
469 	    "FC Port Page 0: Topology <%s> WWNN 0x%08x%08x WWPN 0x%08x%08x "
470 	    "Speed %u-Gbit\n", topology,
471 	    (unsigned)mpt->mpt_fcport_page0.WWNN.High,
472 	    (unsigned)mpt->mpt_fcport_page0.WWNN.Low,
473 	    (unsigned)mpt->mpt_fcport_page0.WWPN.High,
474 	    (unsigned)mpt->mpt_fcport_page0.WWPN.Low,
475 	    (unsigned)mpt->mpt_fcport_speed);
476 #if __FreeBSD_version >= 500000
477 	MPT_UNLOCK(mpt);
478 	{
479 		struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(mpt->dev);
480 		struct sysctl_oid *tree = device_get_sysctl_tree(mpt->dev);
481 
482 		snprintf(mpt->scinfo.fc.wwnn,
483 		    sizeof (mpt->scinfo.fc.wwnn), "0x%08x%08x",
484 		    mpt->mpt_fcport_page0.WWNN.High,
485 		    mpt->mpt_fcport_page0.WWNN.Low);
486 
487 		snprintf(mpt->scinfo.fc.wwpn,
488 		    sizeof (mpt->scinfo.fc.wwpn), "0x%08x%08x",
489 		    mpt->mpt_fcport_page0.WWPN.High,
490 		    mpt->mpt_fcport_page0.WWPN.Low);
491 
492 		SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
493 		       "wwnn", CTLFLAG_RD, mpt->scinfo.fc.wwnn, 0,
494 		       "World Wide Node Name");
495 
496 		SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
497 		       "wwpn", CTLFLAG_RD, mpt->scinfo.fc.wwpn, 0,
498 		       "World Wide Port Name");
499 
500 	}
501 	MPT_LOCK(mpt);
502 #endif
503 	return (0);
504 }
505 
506 /*
507  * Set FC configuration information.
508  */
509 static int
510 mpt_set_initial_config_fc(struct mpt_softc *mpt)
511 {
512 
513 	CONFIG_PAGE_FC_PORT_1 fc;
514 	U32 fl;
515 	int r, doit = 0;
516 	int role;
517 
518 	r = mpt_read_cfg_header(mpt, MPI_CONFIG_PAGETYPE_FC_PORT, 1, 0,
519 	    &fc.Header, FALSE, 5000);
520 	if (r) {
521 		mpt_prt(mpt, "failed to read FC page 1 header\n");
522 		return (mpt_fc_reset_link(mpt, 1));
523 	}
524 
525 	r = mpt_read_cfg_page(mpt, MPI_CONFIG_ACTION_PAGE_READ_NVRAM, 0,
526 	    &fc.Header, sizeof (fc), FALSE, 5000);
527 	if (r) {
528 		mpt_prt(mpt, "failed to read FC page 1\n");
529 		return (mpt_fc_reset_link(mpt, 1));
530 	}
531 	mpt2host_config_page_fc_port_1(&fc);
532 
533 	/*
534 	 * Check our flags to make sure we support the role we want.
535 	 */
536 	doit = 0;
537 	role = 0;
538 	fl = fc.Flags;
539 
540 	if (fl & MPI_FCPORTPAGE1_FLAGS_PROT_FCP_INIT) {
541 		role |= MPT_ROLE_INITIATOR;
542 	}
543 	if (fl & MPI_FCPORTPAGE1_FLAGS_PROT_FCP_TARG) {
544 		role |= MPT_ROLE_TARGET;
545 	}
546 
547 	fl &= ~MPI_FCPORTPAGE1_FLAGS_PROT_MASK;
548 
549 	if (mpt->do_cfg_role == 0) {
550 		role = mpt->cfg_role;
551 	} else {
552 		mpt->do_cfg_role = 0;
553 	}
554 
555 	if (role != mpt->cfg_role) {
556 		if (mpt->cfg_role & MPT_ROLE_INITIATOR) {
557 			if ((role & MPT_ROLE_INITIATOR) == 0) {
558 				mpt_prt(mpt, "adding initiator role\n");
559 				fl |= MPI_FCPORTPAGE1_FLAGS_PROT_FCP_INIT;
560 				doit++;
561 			} else {
562 				mpt_prt(mpt, "keeping initiator role\n");
563 			}
564 		} else if (role & MPT_ROLE_INITIATOR) {
565 			mpt_prt(mpt, "removing initiator role\n");
566 			doit++;
567 		}
568 		if (mpt->cfg_role & MPT_ROLE_TARGET) {
569 			if ((role & MPT_ROLE_TARGET) == 0) {
570 				mpt_prt(mpt, "adding target role\n");
571 				fl |= MPI_FCPORTPAGE1_FLAGS_PROT_FCP_TARG;
572 				doit++;
573 			} else {
574 				mpt_prt(mpt, "keeping target role\n");
575 			}
576 		} else if (role & MPT_ROLE_TARGET) {
577 			mpt_prt(mpt, "removing target role\n");
578 			doit++;
579 		}
580 		mpt->role = mpt->cfg_role;
581 	}
582 
583 	if (fl & MPI_FCPORTPAGE1_FLAGS_PROT_FCP_TARG) {
584 		if ((fl & MPI_FCPORTPAGE1_FLAGS_TARGET_MODE_OXID) == 0) {
585 			mpt_prt(mpt, "adding OXID option\n");
586 			fl |= MPI_FCPORTPAGE1_FLAGS_TARGET_MODE_OXID;
587 			doit++;
588 		}
589 	}
590 
591 	if (doit) {
592 		fc.Flags = fl;
593 		host2mpt_config_page_fc_port_1(&fc);
594 		r = mpt_write_cfg_page(mpt,
595 		    MPI_CONFIG_ACTION_PAGE_WRITE_NVRAM, 0, &fc.Header,
596 		    sizeof(fc), FALSE, 5000);
597 		if (r != 0) {
598 			mpt_prt(mpt, "failed to update NVRAM with changes\n");
599 			return (0);
600 		}
601 		mpt_prt(mpt, "NOTE: NVRAM changes will not take "
602 		    "effect until next reboot or IOC reset\n");
603 	}
604 	return (0);
605 }
606 
607 static int
608 mptsas_sas_io_unit_pg0(struct mpt_softc *mpt, struct mptsas_portinfo *portinfo)
609 {
610 	ConfigExtendedPageHeader_t hdr;
611 	struct mptsas_phyinfo *phyinfo;
612 	SasIOUnitPage0_t *buffer;
613 	int error, len, i;
614 
615 	error = mpt_read_extcfg_header(mpt, MPI_SASIOUNITPAGE0_PAGEVERSION,
616 				       0, 0, MPI_CONFIG_EXTPAGETYPE_SAS_IO_UNIT,
617 				       &hdr, 0, 10000);
618 	if (error)
619 		goto out;
620 	if (hdr.ExtPageLength == 0) {
621 		error = ENXIO;
622 		goto out;
623 	}
624 
625 	len = hdr.ExtPageLength * 4;
626 	buffer = kmalloc(len, M_DEVBUF, M_NOWAIT|M_ZERO);
627 	if (buffer == NULL) {
628 		error = ENOMEM;
629 		goto out;
630 	}
631 
632 	error = mpt_read_extcfg_page(mpt, MPI_CONFIG_ACTION_PAGE_READ_CURRENT,
633 				     0, &hdr, buffer, len, 0, 10000);
634 	if (error) {
635 		kfree(buffer, M_DEVBUF);
636 		goto out;
637 	}
638 
639 	portinfo->num_phys = buffer->NumPhys;
640 	portinfo->phy_info = kmalloc(sizeof(*portinfo->phy_info) *
641 	    portinfo->num_phys, M_DEVBUF, M_NOWAIT|M_ZERO);
642 	if (portinfo->phy_info == NULL) {
643 		kfree(buffer, M_DEVBUF);
644 		error = ENOMEM;
645 		goto out;
646 	}
647 
648 	for (i = 0; i < portinfo->num_phys; i++) {
649 		phyinfo = &portinfo->phy_info[i];
650 		phyinfo->phy_num = i;
651 		phyinfo->port_id = buffer->PhyData[i].Port;
652 		phyinfo->negotiated_link_rate =
653 		    buffer->PhyData[i].NegotiatedLinkRate;
654 		phyinfo->handle =
655 		    le16toh(buffer->PhyData[i].ControllerDevHandle);
656 	}
657 
658 	kfree(buffer, M_DEVBUF);
659 out:
660 	return (error);
661 }
662 
663 static int
664 mptsas_sas_phy_pg0(struct mpt_softc *mpt, struct mptsas_phyinfo *phy_info,
665 	uint32_t form, uint32_t form_specific)
666 {
667 	ConfigExtendedPageHeader_t hdr;
668 	SasPhyPage0_t *buffer;
669 	int error;
670 
671 	error = mpt_read_extcfg_header(mpt, MPI_SASPHY0_PAGEVERSION, 0, 0,
672 				       MPI_CONFIG_EXTPAGETYPE_SAS_PHY, &hdr,
673 				       0, 10000);
674 	if (error)
675 		goto out;
676 	if (hdr.ExtPageLength == 0) {
677 		error = ENXIO;
678 		goto out;
679 	}
680 
681 	buffer = kmalloc(sizeof(SasPhyPage0_t), M_DEVBUF, M_NOWAIT|M_ZERO);
682 	if (buffer == NULL) {
683 		error = ENOMEM;
684 		goto out;
685 	}
686 
687 	error = mpt_read_extcfg_page(mpt, MPI_CONFIG_ACTION_PAGE_READ_CURRENT,
688 				     form + form_specific, &hdr, buffer,
689 				     sizeof(SasPhyPage0_t), 0, 10000);
690 	if (error) {
691 		kfree(buffer, M_DEVBUF);
692 		goto out;
693 	}
694 
695 	phy_info->hw_link_rate = buffer->HwLinkRate;
696 	phy_info->programmed_link_rate = buffer->ProgrammedLinkRate;
697 	phy_info->identify.dev_handle = le16toh(buffer->OwnerDevHandle);
698 	phy_info->attached.dev_handle = le16toh(buffer->AttachedDevHandle);
699 
700 	kfree(buffer, M_DEVBUF);
701 out:
702 	return (error);
703 }
704 
705 static int
706 mptsas_sas_device_pg0(struct mpt_softc *mpt, struct mptsas_devinfo *device_info,
707 	uint32_t form, uint32_t form_specific)
708 {
709 	ConfigExtendedPageHeader_t hdr;
710 	SasDevicePage0_t *buffer;
711 	uint64_t sas_address;
712 	int error = 0;
713 
714 	bzero(device_info, sizeof(*device_info));
715 	error = mpt_read_extcfg_header(mpt, MPI_SASDEVICE0_PAGEVERSION, 0, 0,
716 				       MPI_CONFIG_EXTPAGETYPE_SAS_DEVICE,
717 				       &hdr, 0, 10000);
718 	if (error)
719 		goto out;
720 	if (hdr.ExtPageLength == 0) {
721 		error = ENXIO;
722 		goto out;
723 	}
724 
725 	buffer = kmalloc(sizeof(SasDevicePage0_t), M_DEVBUF, M_NOWAIT|M_ZERO);
726 	if (buffer == NULL) {
727 		error = ENOMEM;
728 		goto out;
729 	}
730 
731 	error = mpt_read_extcfg_page(mpt, MPI_CONFIG_ACTION_PAGE_READ_CURRENT,
732 				     form + form_specific, &hdr, buffer,
733 				     sizeof(SasDevicePage0_t), 0, 10000);
734 	if (error) {
735 		kfree(buffer, M_DEVBUF);
736 		goto out;
737 	}
738 
739 	device_info->dev_handle = le16toh(buffer->DevHandle);
740 	device_info->parent_dev_handle = le16toh(buffer->ParentDevHandle);
741 	device_info->enclosure_handle = le16toh(buffer->EnclosureHandle);
742 	device_info->slot = le16toh(buffer->Slot);
743 	device_info->phy_num = buffer->PhyNum;
744 	device_info->physical_port = buffer->PhysicalPort;
745 	device_info->target_id = buffer->TargetID;
746 	device_info->bus = buffer->Bus;
747 	bcopy(&buffer->SASAddress, &sas_address, sizeof(uint64_t));
748 	device_info->sas_address = le64toh(sas_address);
749 	device_info->device_info = le32toh(buffer->DeviceInfo);
750 
751 	kfree(buffer, M_DEVBUF);
752 out:
753 	return (error);
754 }
755 
756 /*
757  * Read SAS configuration information. Nothing to do yet.
758  */
759 static int
760 mpt_read_config_info_sas(struct mpt_softc *mpt)
761 {
762 	struct mptsas_portinfo *portinfo;
763 	struct mptsas_phyinfo *phyinfo;
764 	int error, i;
765 
766 	portinfo = kmalloc(sizeof(*portinfo), M_DEVBUF, M_NOWAIT|M_ZERO);
767 	if (portinfo == NULL)
768 		return (ENOMEM);
769 
770 	error = mptsas_sas_io_unit_pg0(mpt, portinfo);
771 	if (error) {
772 		kfree(portinfo, M_DEVBUF);
773 		return (0);
774 	}
775 
776 	for (i = 0; i < portinfo->num_phys; i++) {
777 		phyinfo = &portinfo->phy_info[i];
778 		error = mptsas_sas_phy_pg0(mpt, phyinfo,
779 		    (MPI_SAS_PHY_PGAD_FORM_PHY_NUMBER <<
780 		    MPI_SAS_PHY_PGAD_FORM_SHIFT), i);
781 		if (error)
782 			break;
783 		error = mptsas_sas_device_pg0(mpt, &phyinfo->identify,
784 		    (MPI_SAS_DEVICE_PGAD_FORM_HANDLE <<
785 		    MPI_SAS_DEVICE_PGAD_FORM_SHIFT),
786 		    phyinfo->handle);
787 		if (error)
788 			break;
789 		phyinfo->identify.phy_num = phyinfo->phy_num = i;
790 		if (phyinfo->attached.dev_handle)
791 			error = mptsas_sas_device_pg0(mpt,
792 			    &phyinfo->attached,
793 			    (MPI_SAS_DEVICE_PGAD_FORM_HANDLE <<
794 			    MPI_SAS_DEVICE_PGAD_FORM_SHIFT),
795 			    phyinfo->attached.dev_handle);
796 		if (error)
797 			break;
798 	}
799 	mpt->sas_portinfo = portinfo;
800 	return (0);
801 }
802 
803 static void
804 mptsas_set_sata_wc(struct mpt_softc *mpt, struct mptsas_devinfo *devinfo,
805 	int enabled)
806 {
807 	SataPassthroughRequest_t	*pass;
808 	request_t *req;
809 	int error, status;
810 
811 	req = mpt_get_request(mpt, 0);
812 	if (req == NULL)
813 		return;
814 
815 	pass = req->req_vbuf;
816 	bzero(pass, sizeof(SataPassthroughRequest_t));
817 	pass->Function = MPI_FUNCTION_SATA_PASSTHROUGH;
818 	pass->TargetID = devinfo->target_id;
819 	pass->Bus = devinfo->bus;
820 	pass->PassthroughFlags = 0;
821 	pass->ConnectionRate = MPI_SATA_PT_REQ_CONNECT_RATE_NEGOTIATED;
822 	pass->DataLength = 0;
823 	pass->MsgContext = htole32(req->index | sata_pass_handler_id);
824 	pass->CommandFIS[0] = 0x27;
825 	pass->CommandFIS[1] = 0x80;
826 	pass->CommandFIS[2] = 0xef;
827 	pass->CommandFIS[3] = (enabled) ? 0x02 : 0x82;
828 	pass->CommandFIS[7] = 0x40;
829 	pass->CommandFIS[15] = 0x08;
830 
831 	mpt_check_doorbell(mpt);
832 	mpt_send_cmd(mpt, req);
833 	error = mpt_wait_req(mpt, req, REQ_STATE_DONE, REQ_STATE_DONE, 0,
834 			     10 * 1000);
835 	if (error) {
836 		mpt_free_request(mpt, req);
837 		kprintf("error %d sending passthrough\n", error);
838 		return;
839 	}
840 
841 	status = le16toh(req->IOCStatus);
842 	if (status != MPI_IOCSTATUS_SUCCESS) {
843 		mpt_free_request(mpt, req);
844 		kprintf("IOCSTATUS %d\n", status);
845 		return;
846 	}
847 
848 	mpt_free_request(mpt, req);
849 }
850 
851 /*
852  * Set SAS configuration information. Nothing to do yet.
853  */
854 static int
855 mpt_set_initial_config_sas(struct mpt_softc *mpt)
856 {
857 	struct mptsas_phyinfo *phyinfo;
858 	int i;
859 
860 	if ((mpt_enable_sata_wc != -1) && (mpt->sas_portinfo != NULL)) {
861 		for (i = 0; i < mpt->sas_portinfo->num_phys; i++) {
862 			phyinfo = &mpt->sas_portinfo->phy_info[i];
863 			if (phyinfo->attached.dev_handle == 0)
864 				continue;
865 			if ((phyinfo->attached.device_info &
866 			    MPI_SAS_DEVICE_INFO_SATA_DEVICE) == 0)
867 				continue;
868 			if (bootverbose)
869 				device_printf(mpt->dev,
870 				    "%sabling SATA WC on phy %d\n",
871 				    (mpt_enable_sata_wc) ? "En" : "Dis", i);
872 			mptsas_set_sata_wc(mpt, &phyinfo->attached,
873 					   mpt_enable_sata_wc);
874 		}
875 	}
876 
877 	return (0);
878 }
879 
880 static int
881 mpt_sata_pass_reply_handler(struct mpt_softc *mpt, request_t *req,
882  uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame)
883 {
884 	if (req != NULL) {
885 
886 		if (reply_frame != NULL) {
887 			req->IOCStatus = le16toh(reply_frame->IOCStatus);
888 		}
889 		req->state &= ~REQ_STATE_QUEUED;
890 		req->state |= REQ_STATE_DONE;
891 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
892 		if ((req->state & REQ_STATE_NEED_WAKEUP) != 0) {
893 			wakeup(req);
894 		} else if ((req->state & REQ_STATE_TIMEDOUT) != 0) {
895 			/*
896 			 * Whew- we can free this request (late completion)
897 			 */
898 			mpt_free_request(mpt, req);
899 		}
900 	}
901 
902 	return (TRUE);
903 }
904 
905 /*
906  * Read SCSI configuration information
907  */
908 static int
909 mpt_read_config_info_spi(struct mpt_softc *mpt)
910 {
911 	int rv, i;
912 
913 	rv = mpt_read_cfg_header(mpt, MPI_CONFIG_PAGETYPE_SCSI_PORT, 0, 0,
914 	    &mpt->mpt_port_page0.Header, FALSE, 5000);
915 	if (rv) {
916 		return (-1);
917 	}
918 	mpt_lprt(mpt, MPT_PRT_DEBUG, "SPI Port Page 0 Header: %x %x %x %x\n",
919 	    mpt->mpt_port_page0.Header.PageVersion,
920 	    mpt->mpt_port_page0.Header.PageLength,
921 	    mpt->mpt_port_page0.Header.PageNumber,
922 	    mpt->mpt_port_page0.Header.PageType);
923 
924 	rv = mpt_read_cfg_header(mpt, MPI_CONFIG_PAGETYPE_SCSI_PORT, 1, 0,
925 	    &mpt->mpt_port_page1.Header, FALSE, 5000);
926 	if (rv) {
927 		return (-1);
928 	}
929 	mpt_lprt(mpt, MPT_PRT_DEBUG, "SPI Port Page 1 Header: %x %x %x %x\n",
930 	    mpt->mpt_port_page1.Header.PageVersion,
931 	    mpt->mpt_port_page1.Header.PageLength,
932 	    mpt->mpt_port_page1.Header.PageNumber,
933 	    mpt->mpt_port_page1.Header.PageType);
934 
935 	rv = mpt_read_cfg_header(mpt, MPI_CONFIG_PAGETYPE_SCSI_PORT, 2, 0,
936 	    &mpt->mpt_port_page2.Header, FALSE, 5000);
937 	if (rv) {
938 		return (-1);
939 	}
940 	mpt_lprt(mpt, MPT_PRT_DEBUG, "SPI Port Page 2 Header: %x %x %x %x\n",
941 	    mpt->mpt_port_page2.Header.PageVersion,
942 	    mpt->mpt_port_page2.Header.PageLength,
943 	    mpt->mpt_port_page2.Header.PageNumber,
944 	    mpt->mpt_port_page2.Header.PageType);
945 
946 	for (i = 0; i < 16; i++) {
947 		rv = mpt_read_cfg_header(mpt, MPI_CONFIG_PAGETYPE_SCSI_DEVICE,
948 		    0, i, &mpt->mpt_dev_page0[i].Header, FALSE, 5000);
949 		if (rv) {
950 			return (-1);
951 		}
952 		mpt_lprt(mpt, MPT_PRT_DEBUG,
953 		    "SPI Target %d Device Page 0 Header: %x %x %x %x\n", i,
954 		    mpt->mpt_dev_page0[i].Header.PageVersion,
955 		    mpt->mpt_dev_page0[i].Header.PageLength,
956 		    mpt->mpt_dev_page0[i].Header.PageNumber,
957 		    mpt->mpt_dev_page0[i].Header.PageType);
958 
959 		rv = mpt_read_cfg_header(mpt, MPI_CONFIG_PAGETYPE_SCSI_DEVICE,
960 		    1, i, &mpt->mpt_dev_page1[i].Header, FALSE, 5000);
961 		if (rv) {
962 			return (-1);
963 		}
964 		mpt_lprt(mpt, MPT_PRT_DEBUG,
965 		    "SPI Target %d Device Page 1 Header: %x %x %x %x\n", i,
966 		    mpt->mpt_dev_page1[i].Header.PageVersion,
967 		    mpt->mpt_dev_page1[i].Header.PageLength,
968 		    mpt->mpt_dev_page1[i].Header.PageNumber,
969 		    mpt->mpt_dev_page1[i].Header.PageType);
970 	}
971 
972 	/*
973 	 * At this point, we don't *have* to fail. As long as we have
974 	 * valid config header information, we can (barely) lurch
975 	 * along.
976 	 */
977 
978 	rv = mpt_read_cur_cfg_page(mpt, 0, &mpt->mpt_port_page0.Header,
979 	    sizeof(mpt->mpt_port_page0), FALSE, 5000);
980 	if (rv) {
981 		mpt_prt(mpt, "failed to read SPI Port Page 0\n");
982 	} else {
983 		mpt2host_config_page_scsi_port_0(&mpt->mpt_port_page0);
984 		mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
985 		    "SPI Port Page 0: Capabilities %x PhysicalInterface %x\n",
986 		    (unsigned)mpt->mpt_port_page0.Capabilities,
987 		    (unsigned)mpt->mpt_port_page0.PhysicalInterface);
988 	}
989 
990 	rv = mpt_read_cur_cfg_page(mpt, 0, &mpt->mpt_port_page1.Header,
991 	    sizeof(mpt->mpt_port_page1), FALSE, 5000);
992 	if (rv) {
993 		mpt_prt(mpt, "failed to read SPI Port Page 1\n");
994 	} else {
995 		mpt2host_config_page_scsi_port_1(&mpt->mpt_port_page1);
996 		mpt_lprt(mpt, MPT_PRT_DEBUG,
997 		    "SPI Port Page 1: Configuration %x OnBusTimerValue %x\n",
998 		    (unsigned)mpt->mpt_port_page1.Configuration,
999 		    (unsigned)mpt->mpt_port_page1.OnBusTimerValue);
1000 	}
1001 
1002 	rv = mpt_read_cur_cfg_page(mpt, 0, &mpt->mpt_port_page2.Header,
1003 	    sizeof(mpt->mpt_port_page2), FALSE, 5000);
1004 	if (rv) {
1005 		mpt_prt(mpt, "failed to read SPI Port Page 2\n");
1006 	} else {
1007 		mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
1008 		    "Port Page 2: Flags %x Settings %x\n",
1009 		    (unsigned)mpt->mpt_port_page2.PortFlags,
1010 		    (unsigned)mpt->mpt_port_page2.PortSettings);
1011 		mpt2host_config_page_scsi_port_2(&mpt->mpt_port_page2);
1012 		for (i = 0; i < 16; i++) {
1013 			mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
1014 			    " Port Page 2 Tgt %d: timo %x SF %x Flags %x\n",
1015 			    i, mpt->mpt_port_page2.DeviceSettings[i].Timeout,
1016 			    mpt->mpt_port_page2.DeviceSettings[i].SyncFactor,
1017 			    mpt->mpt_port_page2.DeviceSettings[i].DeviceFlags);
1018 		}
1019 	}
1020 
1021 	for (i = 0; i < 16; i++) {
1022 		rv = mpt_read_cur_cfg_page(mpt, i,
1023 		    &mpt->mpt_dev_page0[i].Header, sizeof(*mpt->mpt_dev_page0),
1024 		    FALSE, 5000);
1025 		if (rv) {
1026 			mpt_prt(mpt,
1027 			    "cannot read SPI Target %d Device Page 0\n", i);
1028 			continue;
1029 		}
1030 		mpt2host_config_page_scsi_device_0(&mpt->mpt_dev_page0[i]);
1031 		mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
1032 		    "target %d page 0: Negotiated Params %x Information %x\n",
1033 		    i,
1034 		    (unsigned)mpt->mpt_dev_page0[i].NegotiatedParameters,
1035 		    (unsigned)mpt->mpt_dev_page0[i].Information);
1036 
1037 		rv = mpt_read_cur_cfg_page(mpt, i,
1038 		    &mpt->mpt_dev_page1[i].Header, sizeof(*mpt->mpt_dev_page1),
1039 		    FALSE, 5000);
1040 		if (rv) {
1041 			mpt_prt(mpt,
1042 			    "cannot read SPI Target %d Device Page 1\n", i);
1043 			continue;
1044 		}
1045 		mpt2host_config_page_scsi_device_1(&mpt->mpt_dev_page1[i]);
1046 		mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
1047 		    "target %d page 1: Requested Params %x Configuration %x\n",
1048 		    i,
1049 		    (unsigned)mpt->mpt_dev_page1[i].RequestedParameters,
1050 		    (unsigned)mpt->mpt_dev_page1[i].Configuration);
1051 	}
1052 	return (0);
1053 }
1054 
1055 /*
1056  * Validate SPI configuration information.
1057  *
1058  * In particular, validate SPI Port Page 1.
1059  */
1060 static int
1061 mpt_set_initial_config_spi(struct mpt_softc *mpt)
1062 {
1063 	int i, pp1val = ((1 << mpt->mpt_ini_id) << 16) | mpt->mpt_ini_id;
1064 	int error;
1065 
1066 	mpt->mpt_disc_enable = 0xff;
1067 	mpt->mpt_tag_enable = 0;
1068 
1069 	if (mpt->mpt_port_page1.Configuration != pp1val) {
1070 		CONFIG_PAGE_SCSI_PORT_1 tmp;
1071 
1072 		mpt_prt(mpt, "SPI Port Page 1 Config value bad (%x)- should "
1073 			     "be %x\n",
1074 			(unsigned)mpt->mpt_port_page1.Configuration,
1075 			(unsigned)pp1val);
1076 		tmp = mpt->mpt_port_page1;
1077 		tmp.Configuration = pp1val;
1078 		host2mpt_config_page_scsi_port_1(&tmp);
1079 		error = mpt_write_cur_cfg_page(mpt, 0,
1080 		    &tmp.Header, sizeof(tmp), FALSE, 5000);
1081 		if (error) {
1082 			return (-1);
1083 		}
1084 		error = mpt_read_cur_cfg_page(mpt, 0,
1085 		    &tmp.Header, sizeof(tmp), FALSE, 5000);
1086 		if (error) {
1087 			return (-1);
1088 		}
1089 		mpt2host_config_page_scsi_port_1(&tmp);
1090 		if (tmp.Configuration != pp1val) {
1091 			mpt_prt(mpt,
1092 			    "failed to reset SPI Port Page 1 Config value\n");
1093 			return (-1);
1094 		}
1095 		mpt->mpt_port_page1 = tmp;
1096 	}
1097 
1098 	/*
1099 	 * The purpose of this exercise is to get
1100 	 * all targets back to async/narrow.
1101 	 *
1102 	 * We skip this step if the BIOS has already negotiated
1103 	 * speeds with the targets.
1104 	 */
1105 	i = mpt->mpt_port_page2.PortSettings &
1106 	    MPI_SCSIPORTPAGE2_PORT_MASK_NEGO_MASTER_SETTINGS;
1107 	if (i == MPI_SCSIPORTPAGE2_PORT_ALL_MASTER_SETTINGS) {
1108 		mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
1109 		    "honoring BIOS transfer negotiations\n");
1110 	} else {
1111 		for (i = 0; i < 16; i++) {
1112 			mpt->mpt_dev_page1[i].RequestedParameters = 0;
1113 			mpt->mpt_dev_page1[i].Configuration = 0;
1114 			(void) mpt_update_spi_config(mpt, i);
1115 		}
1116 	}
1117 	return (0);
1118 }
1119 
1120 int
1121 mpt_cam_enable(struct mpt_softc *mpt)
1122 {
1123 	int error;
1124 
1125 	MPT_LOCK(mpt);
1126 
1127 	error = EIO;
1128 	if (mpt->is_fc) {
1129 		if (mpt_read_config_info_fc(mpt)) {
1130 			goto out;
1131 		}
1132 		if (mpt_set_initial_config_fc(mpt)) {
1133 			goto out;
1134 		}
1135 	} else if (mpt->is_sas) {
1136 		if (mpt_read_config_info_sas(mpt)) {
1137 			goto out;
1138 		}
1139 		if (mpt_set_initial_config_sas(mpt)) {
1140 			goto out;
1141 		}
1142 	} else if (mpt->is_spi) {
1143 		if (mpt_read_config_info_spi(mpt)) {
1144 			goto out;
1145 		}
1146 		if (mpt_set_initial_config_spi(mpt)) {
1147 			goto out;
1148 		}
1149 	}
1150 	error = 0;
1151 
1152 out:
1153 	MPT_UNLOCK(mpt);
1154 	return (error);
1155 }
1156 
1157 void
1158 mpt_cam_ready(struct mpt_softc *mpt)
1159 {
1160 	/*
1161 	 * If we're in target mode, hang out resources now
1162 	 * so we don't cause the world to hang talking to us.
1163 	 */
1164 	if (mpt->is_fc && (mpt->role & MPT_ROLE_TARGET)) {
1165 		/*
1166 		 * Try to add some target command resources
1167 		 */
1168 		MPT_LOCK(mpt);
1169 		if (mpt_add_target_commands(mpt) == FALSE) {
1170 			mpt_prt(mpt, "failed to add target commands\n");
1171 		}
1172 		MPT_UNLOCK(mpt);
1173 	}
1174 	mpt->ready = 1;
1175 }
1176 
1177 void
1178 mpt_cam_detach(struct mpt_softc *mpt)
1179 {
1180 	mpt_handler_t handler;
1181 
1182 	MPT_LOCK(mpt);
1183 	mpt->ready = 0;
1184 	mpt_terminate_recovery_thread(mpt);
1185 
1186 	handler.reply_handler = mpt_scsi_reply_handler;
1187 	mpt_deregister_handler(mpt, MPT_HANDLER_REPLY, handler,
1188 			       scsi_io_handler_id);
1189 	handler.reply_handler = mpt_scsi_tmf_reply_handler;
1190 	mpt_deregister_handler(mpt, MPT_HANDLER_REPLY, handler,
1191 			       scsi_tmf_handler_id);
1192 	handler.reply_handler = mpt_fc_els_reply_handler;
1193 	mpt_deregister_handler(mpt, MPT_HANDLER_REPLY, handler,
1194 			       fc_els_handler_id);
1195 	handler.reply_handler = mpt_scsi_tgt_reply_handler;
1196 	mpt_deregister_handler(mpt, MPT_HANDLER_REPLY, handler,
1197 			       mpt->scsi_tgt_handler_id);
1198 	handler.reply_handler = mpt_sata_pass_reply_handler;
1199 	mpt_deregister_handler(mpt, MPT_HANDLER_REPLY, handler,
1200 			       sata_pass_handler_id);
1201 
1202 	if (mpt->tmf_req != NULL) {
1203 		mpt->tmf_req->state = REQ_STATE_ALLOCATED;
1204 		mpt_free_request(mpt, mpt->tmf_req);
1205 		mpt->tmf_req = NULL;
1206 	}
1207 	if (mpt->sas_portinfo != NULL) {
1208 		kfree(mpt->sas_portinfo, M_DEVBUF);
1209 		mpt->sas_portinfo = NULL;
1210 	}
1211 	MPT_UNLOCK(mpt);
1212 
1213 	if (mpt->sim != NULL) {
1214 		xpt_free_path(mpt->path);
1215 		xpt_bus_deregister(cam_sim_path(mpt->sim));
1216 		cam_sim_free(mpt->sim);
1217 		mpt->sim = NULL;
1218 	}
1219 
1220 	if (mpt->phydisk_sim != NULL) {
1221 		xpt_free_path(mpt->phydisk_path);
1222 		xpt_bus_deregister(cam_sim_path(mpt->phydisk_sim));
1223 		cam_sim_free(mpt->phydisk_sim);
1224 		mpt->phydisk_sim = NULL;
1225 	}
1226 }
1227 
1228 /* This routine is used after a system crash to dump core onto the swap device.
1229  */
1230 static void
1231 mpt_poll(struct cam_sim *sim)
1232 {
1233 	struct mpt_softc *mpt;
1234 
1235 	mpt = (struct mpt_softc *)cam_sim_softc(sim);
1236 	mpt_intr(mpt);
1237 }
1238 
1239 /*
1240  * Watchdog timeout routine for SCSI requests.
1241  */
1242 static void
1243 mpt_timeout(void *arg)
1244 {
1245 	union ccb	 *ccb;
1246 	struct mpt_softc *mpt;
1247 	request_t	 *req;
1248 
1249 	ccb = (union ccb *)arg;
1250 	mpt = ccb->ccb_h.ccb_mpt_ptr;
1251 
1252 	MPT_LOCK(mpt);
1253 	req = ccb->ccb_h.ccb_req_ptr;
1254 	mpt_prt(mpt, "request %p:%u timed out for ccb %p (req->ccb %p)\n", req,
1255 	    req->serno, ccb, req->ccb);
1256 /* XXX: WHAT ARE WE TRYING TO DO HERE? */
1257 	if ((req->state & REQ_STATE_QUEUED) == REQ_STATE_QUEUED) {
1258 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
1259 		TAILQ_INSERT_TAIL(&mpt->request_timeout_list, req, links);
1260 		req->state |= REQ_STATE_TIMEDOUT;
1261 		mpt_wakeup_recovery_thread(mpt);
1262 	}
1263 	MPT_UNLOCK(mpt);
1264 }
1265 
1266 /*
1267  * Callback routine from "bus_dmamap_load" or, in simple cases, called directly.
1268  *
1269  * Takes a list of physical segments and builds the SGL for SCSI IO command
1270  * and forwards the commard to the IOC after one last check that CAM has not
1271  * aborted the transaction.
1272  */
1273 static void
1274 mpt_execute_req_a64(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
1275 {
1276 	request_t *req, *trq;
1277 	char *mpt_off;
1278 	union ccb *ccb;
1279 	struct mpt_softc *mpt;
1280 	int seg, first_lim;
1281 	uint32_t flags, nxt_off;
1282 	void *sglp = NULL;
1283 	MSG_REQUEST_HEADER *hdrp;
1284 	SGE_SIMPLE64 *se;
1285 	SGE_CHAIN64 *ce;
1286 	int istgt = 0;
1287 
1288 	req = (request_t *)arg;
1289 	ccb = req->ccb;
1290 
1291 	mpt = ccb->ccb_h.ccb_mpt_ptr;
1292 	req = ccb->ccb_h.ccb_req_ptr;
1293 
1294 	hdrp = req->req_vbuf;
1295 	mpt_off = req->req_vbuf;
1296 
1297 	if (error == 0 && ((uint32_t)nseg) >= mpt->max_seg_cnt) {
1298 		error = EFBIG;
1299 	}
1300 
1301 	if (error == 0) {
1302 		switch (hdrp->Function) {
1303 		case MPI_FUNCTION_SCSI_IO_REQUEST:
1304 		case MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
1305 			istgt = 0;
1306 			sglp = &((PTR_MSG_SCSI_IO_REQUEST)hdrp)->SGL;
1307 			break;
1308 		case MPI_FUNCTION_TARGET_ASSIST:
1309 			istgt = 1;
1310 			sglp = &((PTR_MSG_TARGET_ASSIST_REQUEST)hdrp)->SGL;
1311 			break;
1312 		default:
1313 			mpt_prt(mpt, "bad fct 0x%x in mpt_execute_req_a64\n",
1314 			    hdrp->Function);
1315 			error = EINVAL;
1316 			break;
1317 		}
1318 	}
1319 
1320 	if (error == 0 && ((uint32_t)nseg) >= mpt->max_seg_cnt) {
1321 		error = EFBIG;
1322 		mpt_prt(mpt, "segment count %d too large (max %u)\n",
1323 		    nseg, mpt->max_seg_cnt);
1324 	}
1325 
1326 bad:
1327 	if (error != 0) {
1328 		if (error != EFBIG && error != ENOMEM) {
1329 			mpt_prt(mpt, "mpt_execute_req_a64: err %d\n", error);
1330 		}
1331 		if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INPROG) {
1332 			cam_status status;
1333 			mpt_freeze_ccb(ccb);
1334 			if (error == EFBIG) {
1335 				status = CAM_REQ_TOO_BIG;
1336 			} else if (error == ENOMEM) {
1337 				if (mpt->outofbeer == 0) {
1338 					mpt->outofbeer = 1;
1339 					xpt_freeze_simq(mpt->sim, 1);
1340 					mpt_lprt(mpt, MPT_PRT_DEBUG,
1341 					    "FREEZEQ\n");
1342 				}
1343 				status = CAM_REQUEUE_REQ;
1344 			} else {
1345 				status = CAM_REQ_CMP_ERR;
1346 			}
1347 			mpt_set_ccb_status(ccb, status);
1348 		}
1349 		if (hdrp->Function == MPI_FUNCTION_TARGET_ASSIST) {
1350 			request_t *cmd_req =
1351 				MPT_TAG_2_REQ(mpt, ccb->csio.tag_id);
1352 			MPT_TGT_STATE(mpt, cmd_req)->state = TGT_STATE_IN_CAM;
1353 			MPT_TGT_STATE(mpt, cmd_req)->ccb = NULL;
1354 			MPT_TGT_STATE(mpt, cmd_req)->req = NULL;
1355 		}
1356 		ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
1357 		KASSERT(ccb->ccb_h.status, ("zero ccb sts at %d\n", __LINE__));
1358 		xpt_done(ccb);
1359 		CAMLOCK_2_MPTLOCK(mpt);
1360 		mpt_free_request(mpt, req);
1361 		MPTLOCK_2_CAMLOCK(mpt);
1362 		return;
1363 	}
1364 
1365 	/*
1366 	 * No data to transfer?
1367 	 * Just make a single simple SGL with zero length.
1368 	 */
1369 
1370 	if (mpt->verbose >= MPT_PRT_DEBUG) {
1371 		int tidx = ((char *)sglp) - mpt_off;
1372 		memset(&mpt_off[tidx], 0xff, MPT_REQUEST_AREA - tidx);
1373 	}
1374 
1375 	if (nseg == 0) {
1376 		SGE_SIMPLE32 *se1 = (SGE_SIMPLE32 *) sglp;
1377 		MPI_pSGE_SET_FLAGS(se1,
1378 		    (MPI_SGE_FLAGS_LAST_ELEMENT | MPI_SGE_FLAGS_END_OF_BUFFER |
1379 		    MPI_SGE_FLAGS_SIMPLE_ELEMENT | MPI_SGE_FLAGS_END_OF_LIST));
1380 		se1->FlagsLength = htole32(se1->FlagsLength);
1381 		goto out;
1382 	}
1383 
1384 
1385 	flags = MPI_SGE_FLAGS_SIMPLE_ELEMENT | MPI_SGE_FLAGS_64_BIT_ADDRESSING;
1386 	if (istgt == 0) {
1387 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
1388 			flags |= MPI_SGE_FLAGS_HOST_TO_IOC;
1389 		}
1390 	} else {
1391 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
1392 			flags |= MPI_SGE_FLAGS_HOST_TO_IOC;
1393 		}
1394 	}
1395 
1396 	if (!(ccb->ccb_h.flags & (CAM_SG_LIST_PHYS|CAM_DATA_PHYS))) {
1397 		bus_dmasync_op_t op;
1398 		if (istgt == 0) {
1399 			if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
1400 				op = BUS_DMASYNC_PREREAD;
1401 			} else {
1402 				op = BUS_DMASYNC_PREWRITE;
1403 			}
1404 		} else {
1405 			if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
1406 				op = BUS_DMASYNC_PREWRITE;
1407 			} else {
1408 				op = BUS_DMASYNC_PREREAD;
1409 			}
1410 		}
1411 		bus_dmamap_sync(mpt->buffer_dmat, req->dmap, op);
1412 	}
1413 
1414 	/*
1415 	 * Okay, fill in what we can at the end of the command frame.
1416 	 * If we have up to MPT_NSGL_FIRST, we can fit them all into
1417 	 * the command frame.
1418 	 *
1419 	 * Otherwise, we fill up through MPT_NSGL_FIRST less one
1420 	 * SIMPLE64 pointers and start doing CHAIN64 entries after
1421 	 * that.
1422 	 */
1423 
1424 	if (nseg < MPT_NSGL_FIRST(mpt)) {
1425 		first_lim = nseg;
1426 	} else {
1427 		/*
1428 		 * Leave room for CHAIN element
1429 		 */
1430 		first_lim = MPT_NSGL_FIRST(mpt) - 1;
1431 	}
1432 
1433 	se = (SGE_SIMPLE64 *) sglp;
1434 	for (seg = 0; seg < first_lim; seg++, se++, dm_segs++) {
1435 		uint32_t tf;
1436 
1437 		memset(se, 0, sizeof (*se));
1438 		se->Address.Low = htole32(dm_segs->ds_addr & 0xffffffff);
1439 		if (sizeof(bus_addr_t) > 4) {
1440 			se->Address.High =
1441 			    htole32(((uint64_t)dm_segs->ds_addr) >> 32);
1442 		}
1443 		MPI_pSGE_SET_LENGTH(se, dm_segs->ds_len);
1444 		tf = flags;
1445 		if (seg == first_lim - 1) {
1446 			tf |= MPI_SGE_FLAGS_LAST_ELEMENT;
1447 		}
1448 		if (seg == nseg - 1) {
1449 			tf |=	MPI_SGE_FLAGS_END_OF_LIST |
1450 				MPI_SGE_FLAGS_END_OF_BUFFER;
1451 		}
1452 		MPI_pSGE_SET_FLAGS(se, tf);
1453 		se->FlagsLength = htole32(se->FlagsLength);
1454 	}
1455 
1456 	if (seg == nseg) {
1457 		goto out;
1458 	}
1459 
1460 	/*
1461 	 * Tell the IOC where to find the first chain element.
1462 	 */
1463 	hdrp->ChainOffset = ((char *)se - (char *)hdrp) >> 2;
1464 	nxt_off = MPT_RQSL(mpt);
1465 	trq = req;
1466 
1467 	/*
1468 	 * Make up the rest of the data segments out of a chain element
1469 	 * (contiained in the current request frame) which points to
1470 	 * SIMPLE64 elements in the next request frame, possibly ending
1471 	 * with *another* chain element (if there's more).
1472 	 */
1473 	while (seg < nseg) {
1474 		int this_seg_lim;
1475 		uint32_t tf, cur_off;
1476 		bus_addr_t chain_list_addr;
1477 
1478 		/*
1479 		 * Point to the chain descriptor. Note that the chain
1480 		 * descriptor is at the end of the *previous* list (whether
1481 		 * chain or simple).
1482 		 */
1483 		ce = (SGE_CHAIN64 *) se;
1484 
1485 		/*
1486 		 * Before we change our current pointer, make  sure we won't
1487 		 * overflow the request area with this frame. Note that we
1488 		 * test against 'greater than' here as it's okay in this case
1489 		 * to have next offset be just outside the request area.
1490 		 */
1491 		if ((nxt_off + MPT_RQSL(mpt)) > MPT_REQUEST_AREA) {
1492 			nxt_off = MPT_REQUEST_AREA;
1493 			goto next_chain;
1494 		}
1495 
1496 		/*
1497 		 * Set our SGE element pointer to the beginning of the chain
1498 		 * list and update our next chain list offset.
1499 		 */
1500 		se = (SGE_SIMPLE64 *) &mpt_off[nxt_off];
1501 		cur_off = nxt_off;
1502 		nxt_off += MPT_RQSL(mpt);
1503 
1504 		/*
1505 		 * Now initialized the chain descriptor.
1506 		 */
1507 		memset(ce, 0, sizeof (*ce));
1508 
1509 		/*
1510 		 * Get the physical address of the chain list.
1511 		 */
1512 		chain_list_addr = trq->req_pbuf;
1513 		chain_list_addr += cur_off;
1514 		if (sizeof (bus_addr_t) > 4) {
1515 			ce->Address.High =
1516 			    htole32(((uint64_t)chain_list_addr) >> 32);
1517 		}
1518 		ce->Address.Low = htole32(chain_list_addr & 0xffffffff);
1519 		ce->Flags = MPI_SGE_FLAGS_CHAIN_ELEMENT |
1520 			    MPI_SGE_FLAGS_64_BIT_ADDRESSING;
1521 
1522 		/*
1523 		 * If we have more than a frame's worth of segments left,
1524 		 * set up the chain list to have the last element be another
1525 		 * chain descriptor.
1526 		 */
1527 		if ((nseg - seg) > MPT_NSGL(mpt)) {
1528 			this_seg_lim = seg + MPT_NSGL(mpt) - 1;
1529 			/*
1530 			 * The length of the chain is the length in bytes of the
1531 			 * number of segments plus the next chain element.
1532 			 *
1533 			 * The next chain descriptor offset is the length,
1534 			 * in words, of the number of segments.
1535 			 */
1536 			ce->Length = (this_seg_lim - seg) *
1537 			    sizeof (SGE_SIMPLE64);
1538 			ce->NextChainOffset = ce->Length >> 2;
1539 			ce->Length += sizeof (SGE_CHAIN64);
1540 		} else {
1541 			this_seg_lim = nseg;
1542 			ce->Length = (this_seg_lim - seg) *
1543 			    sizeof (SGE_SIMPLE64);
1544 		}
1545 		ce->Length = htole16(ce->Length);
1546 
1547 		/*
1548 		 * Fill in the chain list SGE elements with our segment data.
1549 		 *
1550 		 * If we're the last element in this chain list, set the last
1551 		 * element flag. If we're the completely last element period,
1552 		 * set the end of list and end of buffer flags.
1553 		 */
1554 		while (seg < this_seg_lim) {
1555 			memset(se, 0, sizeof (*se));
1556 			se->Address.Low = htole32(dm_segs->ds_addr &
1557 			    0xffffffff);
1558 			if (sizeof (bus_addr_t) > 4) {
1559 				se->Address.High =
1560 				    htole32(((uint64_t)dm_segs->ds_addr) >> 32);
1561 			}
1562 			MPI_pSGE_SET_LENGTH(se, dm_segs->ds_len);
1563 			tf = flags;
1564 			if (seg ==  this_seg_lim - 1) {
1565 				tf |=	MPI_SGE_FLAGS_LAST_ELEMENT;
1566 			}
1567 			if (seg == nseg - 1) {
1568 				tf |=	MPI_SGE_FLAGS_END_OF_LIST |
1569 					MPI_SGE_FLAGS_END_OF_BUFFER;
1570 			}
1571 			MPI_pSGE_SET_FLAGS(se, tf);
1572 			se->FlagsLength = htole32(se->FlagsLength);
1573 			se++;
1574 			seg++;
1575 			dm_segs++;
1576 		}
1577 
1578     next_chain:
1579 		/*
1580 		 * If we have more segments to do and we've used up all of
1581 		 * the space in a request area, go allocate another one
1582 		 * and chain to that.
1583 		 */
1584 		if (seg < nseg && nxt_off >= MPT_REQUEST_AREA) {
1585 			request_t *nrq;
1586 
1587 			CAMLOCK_2_MPTLOCK(mpt);
1588 			nrq = mpt_get_request(mpt, FALSE);
1589 			MPTLOCK_2_CAMLOCK(mpt);
1590 
1591 			if (nrq == NULL) {
1592 				error = ENOMEM;
1593 				goto bad;
1594 			}
1595 
1596 			/*
1597 			 * Append the new request area on the tail of our list.
1598 			 */
1599 			if ((trq = req->chain) == NULL) {
1600 				req->chain = nrq;
1601 			} else {
1602 				while (trq->chain != NULL) {
1603 					trq = trq->chain;
1604 				}
1605 				trq->chain = nrq;
1606 			}
1607 			trq = nrq;
1608 			mpt_off = trq->req_vbuf;
1609 			if (mpt->verbose >= MPT_PRT_DEBUG) {
1610 				memset(mpt_off, 0xff, MPT_REQUEST_AREA);
1611 			}
1612 			nxt_off = 0;
1613 		}
1614 	}
1615 out:
1616 
1617 	/*
1618 	 * Last time we need to check if this CCB needs to be aborted.
1619 	 */
1620 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
1621 		if (hdrp->Function == MPI_FUNCTION_TARGET_ASSIST) {
1622 			request_t *cmd_req =
1623 				MPT_TAG_2_REQ(mpt, ccb->csio.tag_id);
1624 			MPT_TGT_STATE(mpt, cmd_req)->state = TGT_STATE_IN_CAM;
1625 			MPT_TGT_STATE(mpt, cmd_req)->ccb = NULL;
1626 			MPT_TGT_STATE(mpt, cmd_req)->req = NULL;
1627 		}
1628 		mpt_prt(mpt,
1629 		    "mpt_execute_req_a64: I/O cancelled (status 0x%x)\n",
1630 		    ccb->ccb_h.status & CAM_STATUS_MASK);
1631 		if (nseg && (ccb->ccb_h.flags & CAM_SG_LIST_PHYS) == 0) {
1632 			bus_dmamap_unload(mpt->buffer_dmat, req->dmap);
1633 		}
1634 		ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
1635 		KASSERT(ccb->ccb_h.status, ("zero ccb sts at %d\n", __LINE__));
1636 		xpt_done(ccb);
1637 		CAMLOCK_2_MPTLOCK(mpt);
1638 		mpt_free_request(mpt, req);
1639 		MPTLOCK_2_CAMLOCK(mpt);
1640 		return;
1641 	}
1642 
1643 	ccb->ccb_h.status |= CAM_SIM_QUEUED;
1644 	if (ccb->ccb_h.timeout != CAM_TIME_INFINITY) {
1645 		mpt_req_timeout(req, (ccb->ccb_h.timeout * hz) / 1000,
1646 		    mpt_timeout, ccb);
1647 	}
1648 	if (mpt->verbose > MPT_PRT_DEBUG) {
1649 		int nc = 0;
1650 		mpt_print_request(req->req_vbuf);
1651 		for (trq = req->chain; trq; trq = trq->chain) {
1652 			kprintf("  Additional Chain Area %d\n", nc++);
1653 			mpt_dump_sgl(trq->req_vbuf, 0);
1654 		}
1655 	}
1656 
1657 	if (hdrp->Function == MPI_FUNCTION_TARGET_ASSIST) {
1658 		request_t *cmd_req = MPT_TAG_2_REQ(mpt, ccb->csio.tag_id);
1659 		mpt_tgt_state_t *tgt = MPT_TGT_STATE(mpt, cmd_req);
1660 #ifdef	WE_TRUST_AUTO_GOOD_STATUS
1661 		if ((ccb->ccb_h.flags & CAM_SEND_STATUS) &&
1662 		    csio->scsi_status == SCSI_STATUS_OK && tgt->resid == 0) {
1663 			tgt->state = TGT_STATE_MOVING_DATA_AND_STATUS;
1664 		} else {
1665 			tgt->state = TGT_STATE_MOVING_DATA;
1666 		}
1667 #else
1668 		tgt->state = TGT_STATE_MOVING_DATA;
1669 #endif
1670 	}
1671 	CAMLOCK_2_MPTLOCK(mpt);
1672 	mpt_send_cmd(mpt, req);
1673 	MPTLOCK_2_CAMLOCK(mpt);
1674 }
1675 
1676 static void
1677 mpt_execute_req(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
1678 {
1679 	request_t *req, *trq;
1680 	char *mpt_off;
1681 	union ccb *ccb;
1682 	struct mpt_softc *mpt;
1683 	int seg, first_lim;
1684 	uint32_t flags, nxt_off;
1685 	void *sglp = NULL;
1686 	MSG_REQUEST_HEADER *hdrp;
1687 	SGE_SIMPLE32 *se;
1688 	SGE_CHAIN32 *ce;
1689 	int istgt = 0;
1690 
1691 	req = (request_t *)arg;
1692 	ccb = req->ccb;
1693 
1694 	mpt = ccb->ccb_h.ccb_mpt_ptr;
1695 	req = ccb->ccb_h.ccb_req_ptr;
1696 
1697 	hdrp = req->req_vbuf;
1698 	mpt_off = req->req_vbuf;
1699 
1700 
1701 	if (error == 0 && ((uint32_t)nseg) >= mpt->max_seg_cnt) {
1702 		error = EFBIG;
1703 	}
1704 
1705 	if (error == 0) {
1706 		switch (hdrp->Function) {
1707 		case MPI_FUNCTION_SCSI_IO_REQUEST:
1708 		case MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
1709 			sglp = &((PTR_MSG_SCSI_IO_REQUEST)hdrp)->SGL;
1710 			break;
1711 		case MPI_FUNCTION_TARGET_ASSIST:
1712 			istgt = 1;
1713 			sglp = &((PTR_MSG_TARGET_ASSIST_REQUEST)hdrp)->SGL;
1714 			break;
1715 		default:
1716 			mpt_prt(mpt, "bad fct 0x%x in mpt_execute_req\n",
1717 			    hdrp->Function);
1718 			error = EINVAL;
1719 			break;
1720 		}
1721 	}
1722 
1723 	if (error == 0 && ((uint32_t)nseg) >= mpt->max_seg_cnt) {
1724 		error = EFBIG;
1725 		mpt_prt(mpt, "segment count %d too large (max %u)\n",
1726 		    nseg, mpt->max_seg_cnt);
1727 	}
1728 
1729 bad:
1730 	if (error != 0) {
1731 		if (error != EFBIG && error != ENOMEM) {
1732 			mpt_prt(mpt, "mpt_execute_req: err %d\n", error);
1733 		}
1734 		if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INPROG) {
1735 			cam_status status;
1736 			mpt_freeze_ccb(ccb);
1737 			if (error == EFBIG) {
1738 				status = CAM_REQ_TOO_BIG;
1739 			} else if (error == ENOMEM) {
1740 				if (mpt->outofbeer == 0) {
1741 					mpt->outofbeer = 1;
1742 					xpt_freeze_simq(mpt->sim, 1);
1743 					mpt_lprt(mpt, MPT_PRT_DEBUG,
1744 					    "FREEZEQ\n");
1745 				}
1746 				status = CAM_REQUEUE_REQ;
1747 			} else {
1748 				status = CAM_REQ_CMP_ERR;
1749 			}
1750 			mpt_set_ccb_status(ccb, status);
1751 		}
1752 		if (hdrp->Function == MPI_FUNCTION_TARGET_ASSIST) {
1753 			request_t *cmd_req =
1754 				MPT_TAG_2_REQ(mpt, ccb->csio.tag_id);
1755 			MPT_TGT_STATE(mpt, cmd_req)->state = TGT_STATE_IN_CAM;
1756 			MPT_TGT_STATE(mpt, cmd_req)->ccb = NULL;
1757 			MPT_TGT_STATE(mpt, cmd_req)->req = NULL;
1758 		}
1759 		ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
1760 		KASSERT(ccb->ccb_h.status, ("zero ccb sts at %d\n", __LINE__));
1761 		xpt_done(ccb);
1762 		CAMLOCK_2_MPTLOCK(mpt);
1763 		mpt_free_request(mpt, req);
1764 		MPTLOCK_2_CAMLOCK(mpt);
1765 		return;
1766 	}
1767 
1768 	/*
1769 	 * No data to transfer?
1770 	 * Just make a single simple SGL with zero length.
1771 	 */
1772 
1773 	if (mpt->verbose >= MPT_PRT_DEBUG) {
1774 		int tidx = ((char *)sglp) - mpt_off;
1775 		memset(&mpt_off[tidx], 0xff, MPT_REQUEST_AREA - tidx);
1776 	}
1777 
1778 	if (nseg == 0) {
1779 		SGE_SIMPLE32 *se1 = (SGE_SIMPLE32 *) sglp;
1780 		MPI_pSGE_SET_FLAGS(se1,
1781 		    (MPI_SGE_FLAGS_LAST_ELEMENT | MPI_SGE_FLAGS_END_OF_BUFFER |
1782 		    MPI_SGE_FLAGS_SIMPLE_ELEMENT | MPI_SGE_FLAGS_END_OF_LIST));
1783 		se1->FlagsLength = htole32(se1->FlagsLength);
1784 		goto out;
1785 	}
1786 
1787 
1788 	flags = MPI_SGE_FLAGS_SIMPLE_ELEMENT;
1789 	if (istgt == 0) {
1790 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
1791 			flags |= MPI_SGE_FLAGS_HOST_TO_IOC;
1792 		}
1793 	} else {
1794 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
1795 			flags |= MPI_SGE_FLAGS_HOST_TO_IOC;
1796 		}
1797 	}
1798 
1799 	if (!(ccb->ccb_h.flags & (CAM_SG_LIST_PHYS|CAM_DATA_PHYS))) {
1800 		bus_dmasync_op_t op;
1801 		if (istgt) {
1802 			if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
1803 				op = BUS_DMASYNC_PREREAD;
1804 			} else {
1805 				op = BUS_DMASYNC_PREWRITE;
1806 			}
1807 		} else {
1808 			if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
1809 				op = BUS_DMASYNC_PREWRITE;
1810 			} else {
1811 				op = BUS_DMASYNC_PREREAD;
1812 			}
1813 		}
1814 		bus_dmamap_sync(mpt->buffer_dmat, req->dmap, op);
1815 	}
1816 
1817 	/*
1818 	 * Okay, fill in what we can at the end of the command frame.
1819 	 * If we have up to MPT_NSGL_FIRST, we can fit them all into
1820 	 * the command frame.
1821 	 *
1822 	 * Otherwise, we fill up through MPT_NSGL_FIRST less one
1823 	 * SIMPLE32 pointers and start doing CHAIN32 entries after
1824 	 * that.
1825 	 */
1826 
1827 	if (nseg < MPT_NSGL_FIRST(mpt)) {
1828 		first_lim = nseg;
1829 	} else {
1830 		/*
1831 		 * Leave room for CHAIN element
1832 		 */
1833 		first_lim = MPT_NSGL_FIRST(mpt) - 1;
1834 	}
1835 
1836 	se = (SGE_SIMPLE32 *) sglp;
1837 	for (seg = 0; seg < first_lim; seg++, se++, dm_segs++) {
1838 		uint32_t tf;
1839 
1840 		memset(se, 0,sizeof (*se));
1841 		se->Address = htole32(dm_segs->ds_addr);
1842 
1843 
1844 
1845 		MPI_pSGE_SET_LENGTH(se, dm_segs->ds_len);
1846 		tf = flags;
1847 		if (seg == first_lim - 1) {
1848 			tf |= MPI_SGE_FLAGS_LAST_ELEMENT;
1849 		}
1850 		if (seg == nseg - 1) {
1851 			tf |=	MPI_SGE_FLAGS_END_OF_LIST |
1852 				MPI_SGE_FLAGS_END_OF_BUFFER;
1853 		}
1854 		MPI_pSGE_SET_FLAGS(se, tf);
1855 		se->FlagsLength = htole32(se->FlagsLength);
1856 	}
1857 
1858 	if (seg == nseg) {
1859 		goto out;
1860 	}
1861 
1862 	/*
1863 	 * Tell the IOC where to find the first chain element.
1864 	 */
1865 	hdrp->ChainOffset = ((char *)se - (char *)hdrp) >> 2;
1866 	nxt_off = MPT_RQSL(mpt);
1867 	trq = req;
1868 
1869 	/*
1870 	 * Make up the rest of the data segments out of a chain element
1871 	 * (contiained in the current request frame) which points to
1872 	 * SIMPLE32 elements in the next request frame, possibly ending
1873 	 * with *another* chain element (if there's more).
1874 	 */
1875 	while (seg < nseg) {
1876 		int this_seg_lim;
1877 		uint32_t tf, cur_off;
1878 		bus_addr_t chain_list_addr;
1879 
1880 		/*
1881 		 * Point to the chain descriptor. Note that the chain
1882 		 * descriptor is at the end of the *previous* list (whether
1883 		 * chain or simple).
1884 		 */
1885 		ce = (SGE_CHAIN32 *) se;
1886 
1887 		/*
1888 		 * Before we change our current pointer, make  sure we won't
1889 		 * overflow the request area with this frame. Note that we
1890 		 * test against 'greater than' here as it's okay in this case
1891 		 * to have next offset be just outside the request area.
1892 		 */
1893 		if ((nxt_off + MPT_RQSL(mpt)) > MPT_REQUEST_AREA) {
1894 			nxt_off = MPT_REQUEST_AREA;
1895 			goto next_chain;
1896 		}
1897 
1898 		/*
1899 		 * Set our SGE element pointer to the beginning of the chain
1900 		 * list and update our next chain list offset.
1901 		 */
1902 		se = (SGE_SIMPLE32 *) &mpt_off[nxt_off];
1903 		cur_off = nxt_off;
1904 		nxt_off += MPT_RQSL(mpt);
1905 
1906 		/*
1907 		 * Now initialized the chain descriptor.
1908 		 */
1909 		memset(ce, 0, sizeof (*ce));
1910 
1911 		/*
1912 		 * Get the physical address of the chain list.
1913 		 */
1914 		chain_list_addr = trq->req_pbuf;
1915 		chain_list_addr += cur_off;
1916 
1917 
1918 
1919 		ce->Address = htole32(chain_list_addr);
1920 		ce->Flags = MPI_SGE_FLAGS_CHAIN_ELEMENT;
1921 
1922 
1923 		/*
1924 		 * If we have more than a frame's worth of segments left,
1925 		 * set up the chain list to have the last element be another
1926 		 * chain descriptor.
1927 		 */
1928 		if ((nseg - seg) > MPT_NSGL(mpt)) {
1929 			this_seg_lim = seg + MPT_NSGL(mpt) - 1;
1930 			/*
1931 			 * The length of the chain is the length in bytes of the
1932 			 * number of segments plus the next chain element.
1933 			 *
1934 			 * The next chain descriptor offset is the length,
1935 			 * in words, of the number of segments.
1936 			 */
1937 			ce->Length = (this_seg_lim - seg) *
1938 			    sizeof (SGE_SIMPLE32);
1939 			ce->NextChainOffset = ce->Length >> 2;
1940 			ce->Length += sizeof (SGE_CHAIN32);
1941 		} else {
1942 			this_seg_lim = nseg;
1943 			ce->Length = (this_seg_lim - seg) *
1944 			    sizeof (SGE_SIMPLE32);
1945 		}
1946 		ce->Length = htole16(ce->Length);
1947 
1948 		/*
1949 		 * Fill in the chain list SGE elements with our segment data.
1950 		 *
1951 		 * If we're the last element in this chain list, set the last
1952 		 * element flag. If we're the completely last element period,
1953 		 * set the end of list and end of buffer flags.
1954 		 */
1955 		while (seg < this_seg_lim) {
1956 			memset(se, 0, sizeof (*se));
1957 			se->Address = htole32(dm_segs->ds_addr);
1958 
1959 
1960 
1961 
1962 			MPI_pSGE_SET_LENGTH(se, dm_segs->ds_len);
1963 			tf = flags;
1964 			if (seg ==  this_seg_lim - 1) {
1965 				tf |=	MPI_SGE_FLAGS_LAST_ELEMENT;
1966 			}
1967 			if (seg == nseg - 1) {
1968 				tf |=	MPI_SGE_FLAGS_END_OF_LIST |
1969 					MPI_SGE_FLAGS_END_OF_BUFFER;
1970 			}
1971 			MPI_pSGE_SET_FLAGS(se, tf);
1972 			se->FlagsLength = htole32(se->FlagsLength);
1973 			se++;
1974 			seg++;
1975 			dm_segs++;
1976 		}
1977 
1978     next_chain:
1979 		/*
1980 		 * If we have more segments to do and we've used up all of
1981 		 * the space in a request area, go allocate another one
1982 		 * and chain to that.
1983 		 */
1984 		if (seg < nseg && nxt_off >= MPT_REQUEST_AREA) {
1985 			request_t *nrq;
1986 
1987 			CAMLOCK_2_MPTLOCK(mpt);
1988 			nrq = mpt_get_request(mpt, FALSE);
1989 			MPTLOCK_2_CAMLOCK(mpt);
1990 
1991 			if (nrq == NULL) {
1992 				error = ENOMEM;
1993 				goto bad;
1994 			}
1995 
1996 			/*
1997 			 * Append the new request area on the tail of our list.
1998 			 */
1999 			if ((trq = req->chain) == NULL) {
2000 				req->chain = nrq;
2001 			} else {
2002 				while (trq->chain != NULL) {
2003 					trq = trq->chain;
2004 				}
2005 				trq->chain = nrq;
2006 			}
2007 			trq = nrq;
2008 			mpt_off = trq->req_vbuf;
2009 			if (mpt->verbose >= MPT_PRT_DEBUG) {
2010 				memset(mpt_off, 0xff, MPT_REQUEST_AREA);
2011 			}
2012 			nxt_off = 0;
2013 		}
2014 	}
2015 out:
2016 
2017 	/*
2018 	 * Last time we need to check if this CCB needs to be aborted.
2019 	 */
2020 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
2021 		if (hdrp->Function == MPI_FUNCTION_TARGET_ASSIST) {
2022 			request_t *cmd_req =
2023 				MPT_TAG_2_REQ(mpt, ccb->csio.tag_id);
2024 			MPT_TGT_STATE(mpt, cmd_req)->state = TGT_STATE_IN_CAM;
2025 			MPT_TGT_STATE(mpt, cmd_req)->ccb = NULL;
2026 			MPT_TGT_STATE(mpt, cmd_req)->req = NULL;
2027 		}
2028 		mpt_prt(mpt,
2029 		    "mpt_execute_req: I/O cancelled (status 0x%x)\n",
2030 		    ccb->ccb_h.status & CAM_STATUS_MASK);
2031 		if (nseg && (ccb->ccb_h.flags & CAM_SG_LIST_PHYS) == 0) {
2032 			bus_dmamap_unload(mpt->buffer_dmat, req->dmap);
2033 		}
2034 		ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
2035 		KASSERT(ccb->ccb_h.status, ("zero ccb sts at %d\n", __LINE__));
2036 		xpt_done(ccb);
2037 		CAMLOCK_2_MPTLOCK(mpt);
2038 		mpt_free_request(mpt, req);
2039 		MPTLOCK_2_CAMLOCK(mpt);
2040 		return;
2041 	}
2042 
2043 	ccb->ccb_h.status |= CAM_SIM_QUEUED;
2044 	if (ccb->ccb_h.timeout != CAM_TIME_INFINITY) {
2045 		mpt_req_timeout(req, (ccb->ccb_h.timeout * hz) / 1000,
2046 		    mpt_timeout, ccb);
2047 	}
2048 	if (mpt->verbose > MPT_PRT_DEBUG) {
2049 		int nc = 0;
2050 		mpt_print_request(req->req_vbuf);
2051 		for (trq = req->chain; trq; trq = trq->chain) {
2052 			kprintf("  Additional Chain Area %d\n", nc++);
2053 			mpt_dump_sgl(trq->req_vbuf, 0);
2054 		}
2055 	}
2056 
2057 	if (hdrp->Function == MPI_FUNCTION_TARGET_ASSIST) {
2058 		request_t *cmd_req = MPT_TAG_2_REQ(mpt, ccb->csio.tag_id);
2059 		mpt_tgt_state_t *tgt = MPT_TGT_STATE(mpt, cmd_req);
2060 #ifdef	WE_TRUST_AUTO_GOOD_STATUS
2061 		if ((ccb->ccb_h.flags & CAM_SEND_STATUS) &&
2062 		    csio->scsi_status == SCSI_STATUS_OK && tgt->resid == 0) {
2063 			tgt->state = TGT_STATE_MOVING_DATA_AND_STATUS;
2064 		} else {
2065 			tgt->state = TGT_STATE_MOVING_DATA;
2066 		}
2067 #else
2068 		tgt->state = TGT_STATE_MOVING_DATA;
2069 #endif
2070 	}
2071 	CAMLOCK_2_MPTLOCK(mpt);
2072 	mpt_send_cmd(mpt, req);
2073 	MPTLOCK_2_CAMLOCK(mpt);
2074 }
2075 
2076 static void
2077 mpt_start(struct cam_sim *sim, union ccb *ccb)
2078 {
2079 	request_t *req;
2080 	struct mpt_softc *mpt;
2081 	MSG_SCSI_IO_REQUEST *mpt_req;
2082 	struct ccb_scsiio *csio = &ccb->csio;
2083 	struct ccb_hdr *ccbh = &ccb->ccb_h;
2084 	bus_dmamap_callback_t *cb;
2085 	target_id_t tgt;
2086 	int raid_passthru;
2087 
2088 	/* Get the pointer for the physical addapter */
2089 	mpt = ccb->ccb_h.ccb_mpt_ptr;
2090 	raid_passthru = (sim == mpt->phydisk_sim);
2091 
2092 	CAMLOCK_2_MPTLOCK(mpt);
2093 	if ((req = mpt_get_request(mpt, FALSE)) == NULL) {
2094 		if (mpt->outofbeer == 0) {
2095 			mpt->outofbeer = 1;
2096 			xpt_freeze_simq(mpt->sim, 1);
2097 			mpt_lprt(mpt, MPT_PRT_DEBUG, "FREEZEQ\n");
2098 		}
2099 		ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
2100 		mpt_set_ccb_status(ccb, CAM_REQUEUE_REQ);
2101 		MPTLOCK_2_CAMLOCK(mpt);
2102 		xpt_done(ccb);
2103 		return;
2104 	}
2105 #ifdef	INVARIANTS
2106 	mpt_req_not_spcl(mpt, req, "mpt_start", __LINE__);
2107 #endif
2108 	MPTLOCK_2_CAMLOCK(mpt);
2109 
2110 	if (sizeof (bus_addr_t) > 4) {
2111 		cb = mpt_execute_req_a64;
2112 	} else {
2113 		cb = mpt_execute_req;
2114 	}
2115 
2116 	/*
2117 	 * Link the ccb and the request structure so we can find
2118 	 * the other knowing either the request or the ccb
2119 	 */
2120 	req->ccb = ccb;
2121 	ccb->ccb_h.ccb_req_ptr = req;
2122 
2123 	/* Now we build the command for the IOC */
2124 	mpt_req = req->req_vbuf;
2125 	memset(mpt_req, 0, sizeof (MSG_SCSI_IO_REQUEST));
2126 
2127 	mpt_req->Function = MPI_FUNCTION_SCSI_IO_REQUEST;
2128 	if (raid_passthru) {
2129 		mpt_req->Function = MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
2130 		CAMLOCK_2_MPTLOCK(mpt);
2131 		if (mpt_map_physdisk(mpt, ccb, &tgt) != 0) {
2132 			MPTLOCK_2_CAMLOCK(mpt);
2133 			ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
2134 			mpt_set_ccb_status(ccb, CAM_DEV_NOT_THERE);
2135 			xpt_done(ccb);
2136 			return;
2137 		}
2138 		MPTLOCK_2_CAMLOCK(mpt);
2139 		mpt_req->Bus = 0;	/* we never set bus here */
2140 	} else {
2141 		tgt = ccb->ccb_h.target_id;
2142 		mpt_req->Bus = 0;	/* XXX */
2143 
2144 	}
2145 	mpt_req->SenseBufferLength =
2146 		(csio->sense_len < MPT_SENSE_SIZE) ?
2147 		 csio->sense_len : MPT_SENSE_SIZE;
2148 
2149 	/*
2150 	 * We use the message context to find the request structure when we
2151 	 * Get the command completion interrupt from the IOC.
2152 	 */
2153 	mpt_req->MsgContext = htole32(req->index | scsi_io_handler_id);
2154 
2155 	/* Which physical device to do the I/O on */
2156 	mpt_req->TargetID = tgt;
2157 
2158 	/* We assume a single level LUN type */
2159 	if (ccb->ccb_h.target_lun >= MPT_MAX_LUNS) {
2160 		mpt_req->LUN[0] = 0x40 | ((ccb->ccb_h.target_lun >> 8) & 0x3f);
2161 		mpt_req->LUN[1] = ccb->ccb_h.target_lun & 0xff;
2162 	} else {
2163 		mpt_req->LUN[1] = ccb->ccb_h.target_lun;
2164 	}
2165 
2166 	/* Set the direction of the transfer */
2167 	if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
2168 		mpt_req->Control = MPI_SCSIIO_CONTROL_READ;
2169 	} else if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
2170 		mpt_req->Control = MPI_SCSIIO_CONTROL_WRITE;
2171 	} else {
2172 		mpt_req->Control = MPI_SCSIIO_CONTROL_NODATATRANSFER;
2173 	}
2174 
2175 	if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) {
2176 		switch(ccb->csio.tag_action) {
2177 		case MSG_HEAD_OF_Q_TAG:
2178 			mpt_req->Control |= MPI_SCSIIO_CONTROL_HEADOFQ;
2179 			break;
2180 		case MSG_ACA_TASK:
2181 			mpt_req->Control |= MPI_SCSIIO_CONTROL_ACAQ;
2182 			break;
2183 		case MSG_ORDERED_Q_TAG:
2184 			mpt_req->Control |= MPI_SCSIIO_CONTROL_ORDEREDQ;
2185 			break;
2186 		case MSG_SIMPLE_Q_TAG:
2187 		default:
2188 			mpt_req->Control |= MPI_SCSIIO_CONTROL_SIMPLEQ;
2189 			break;
2190 		}
2191 	} else {
2192 		if (mpt->is_fc || mpt->is_sas) {
2193 			mpt_req->Control |= MPI_SCSIIO_CONTROL_SIMPLEQ;
2194 		} else {
2195 			/* XXX No such thing for a target doing packetized. */
2196 			mpt_req->Control |= MPI_SCSIIO_CONTROL_UNTAGGED;
2197 		}
2198 	}
2199 
2200 	if (mpt->is_spi) {
2201 		if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) {
2202 			mpt_req->Control |= MPI_SCSIIO_CONTROL_NO_DISCONNECT;
2203 		}
2204 	}
2205 	mpt_req->Control = htole32(mpt_req->Control);
2206 
2207 	/* Copy the scsi command block into place */
2208 	if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0) {
2209 		bcopy(csio->cdb_io.cdb_ptr, mpt_req->CDB, csio->cdb_len);
2210 	} else {
2211 		bcopy(csio->cdb_io.cdb_bytes, mpt_req->CDB, csio->cdb_len);
2212 	}
2213 
2214 	mpt_req->CDBLength = csio->cdb_len;
2215 	mpt_req->DataLength = htole32(csio->dxfer_len);
2216 	mpt_req->SenseBufferLowAddr = htole32(req->sense_pbuf);
2217 
2218 	/*
2219 	 * Do a *short* print here if we're set to MPT_PRT_DEBUG
2220 	 */
2221 	if (mpt->verbose == MPT_PRT_DEBUG) {
2222 		U32 df;
2223 		mpt_prt(mpt, "mpt_start: %s op 0x%x ",
2224 		    (mpt_req->Function == MPI_FUNCTION_SCSI_IO_REQUEST)?
2225 		    "SCSI_IO_REQUEST" : "SCSI_IO_PASSTHRU", mpt_req->CDB[0]);
2226 		df = mpt_req->Control & MPI_SCSIIO_CONTROL_DATADIRECTION_MASK;
2227 		if (df != MPI_SCSIIO_CONTROL_NODATATRANSFER) {
2228 			mpt_prtc(mpt, "(%s %u byte%s ",
2229 			    (df == MPI_SCSIIO_CONTROL_READ)?
2230 			    "read" : "write",  csio->dxfer_len,
2231 			    (csio->dxfer_len == 1)? ")" : "s)");
2232 		}
2233 		mpt_prtc(mpt, "tgt %u lun %u req %p:%u\n", tgt,
2234 		    ccb->ccb_h.target_lun, req, req->serno);
2235 	}
2236 
2237 	/*
2238 	 * If we have any data to send with this command map it into bus space.
2239 	 */
2240 	if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
2241 		if ((ccbh->flags & CAM_SCATTER_VALID) == 0) {
2242 			/*
2243 			 * We've been given a pointer to a single buffer.
2244 			 */
2245 			if ((ccbh->flags & CAM_DATA_PHYS) == 0) {
2246 				/*
2247 				 * Virtual address that needs to translated into
2248 				 * one or more physical address ranges.
2249 				 */
2250 				int error;
2251 				error = bus_dmamap_load(mpt->buffer_dmat,
2252 				    req->dmap, csio->data_ptr, csio->dxfer_len,
2253 				    cb, req, 0);
2254 				if (error == EINPROGRESS) {
2255 					/*
2256 					 * So as to maintain ordering,
2257 					 * freeze the controller queue
2258 					 * until our mapping is
2259 					 * returned.
2260 					 */
2261 					xpt_freeze_simq(mpt->sim, 1);
2262 					ccbh->status |= CAM_RELEASE_SIMQ;
2263 				}
2264 			} else {
2265 				/*
2266 				 * We have been given a pointer to single
2267 				 * physical buffer.
2268 				 */
2269 				struct bus_dma_segment seg;
2270 				seg.ds_addr =
2271 				    (bus_addr_t)(vm_offset_t)csio->data_ptr;
2272 				seg.ds_len = csio->dxfer_len;
2273 				(*cb)(req, &seg, 1, 0);
2274 			}
2275 		} else {
2276 			/*
2277 			 * We have been given a list of addresses.
2278 			 * This case could be easily supported but they are not
2279 			 * currently generated by the CAM subsystem so there
2280 			 * is no point in wasting the time right now.
2281 			 */
2282 			struct bus_dma_segment *segs;
2283 			if ((ccbh->flags & CAM_SG_LIST_PHYS) == 0) {
2284 				(*cb)(req, NULL, 0, EFAULT);
2285 			} else {
2286 				/* Just use the segments provided */
2287 				segs = (struct bus_dma_segment *)csio->data_ptr;
2288 				(*cb)(req, segs, csio->sglist_cnt, 0);
2289 			}
2290 		}
2291 	} else {
2292 		(*cb)(req, NULL, 0, 0);
2293 	}
2294 }
2295 
2296 static int
2297 mpt_bus_reset(struct mpt_softc *mpt, target_id_t tgt, lun_id_t lun,
2298     int sleep_ok)
2299 {
2300 	int   error;
2301 	uint16_t status;
2302 	uint8_t response;
2303 
2304 	error = mpt_scsi_send_tmf(mpt,
2305 	    (tgt != CAM_TARGET_WILDCARD || lun != CAM_LUN_WILDCARD) ?
2306 	    MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET :
2307 	    MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
2308 	    mpt->is_fc ? MPI_SCSITASKMGMT_MSGFLAGS_LIP_RESET_OPTION : 0,
2309 	    0,	/* XXX How do I get the channel ID? */
2310 	    tgt != CAM_TARGET_WILDCARD ? tgt : 0,
2311 	    lun != CAM_LUN_WILDCARD ? lun : 0,
2312 	    0, sleep_ok);
2313 
2314 	if (error != 0) {
2315 		/*
2316 		 * mpt_scsi_send_tmf hard resets on failure, so no
2317 		 * need to do so here.
2318 		 */
2319 		mpt_prt(mpt,
2320 		    "mpt_bus_reset: mpt_scsi_send_tmf returned %d\n", error);
2321 		return (EIO);
2322 	}
2323 
2324 	/* Wait for bus reset to be processed by the IOC. */
2325 	error = mpt_wait_req(mpt, mpt->tmf_req, REQ_STATE_DONE,
2326 	    REQ_STATE_DONE, sleep_ok, 5000);
2327 
2328 	status = le16toh(mpt->tmf_req->IOCStatus);
2329 	response = mpt->tmf_req->ResponseCode;
2330 	mpt->tmf_req->state = REQ_STATE_FREE;
2331 
2332 	if (error) {
2333 		mpt_prt(mpt, "mpt_bus_reset: Reset timed-out. "
2334 		    "Resetting controller.\n");
2335 		mpt_reset(mpt, TRUE);
2336 		return (ETIMEDOUT);
2337 	}
2338 
2339 	if ((status & MPI_IOCSTATUS_MASK) != MPI_IOCSTATUS_SUCCESS) {
2340 		mpt_prt(mpt, "mpt_bus_reset: TMF IOC Status 0x%x. "
2341 		    "Resetting controller.\n", status);
2342 		mpt_reset(mpt, TRUE);
2343 		return (EIO);
2344 	}
2345 
2346 	if (response != MPI_SCSITASKMGMT_RSP_TM_SUCCEEDED &&
2347 	    response != MPI_SCSITASKMGMT_RSP_TM_COMPLETE) {
2348 		mpt_prt(mpt, "mpt_bus_reset: TMF Response 0x%x. "
2349 		    "Resetting controller.\n", response);
2350 		mpt_reset(mpt, TRUE);
2351 		return (EIO);
2352 	}
2353 	return (0);
2354 }
2355 
2356 static int
2357 mpt_fc_reset_link(struct mpt_softc *mpt, int dowait)
2358 {
2359 	int r = 0;
2360 	request_t *req;
2361 	PTR_MSG_FC_PRIMITIVE_SEND_REQUEST fc;
2362 
2363 	req = mpt_get_request(mpt, FALSE);
2364 	if (req == NULL) {
2365 		return (ENOMEM);
2366 	}
2367 	fc = req->req_vbuf;
2368 	memset(fc, 0, sizeof(*fc));
2369 	fc->SendFlags = MPI_FC_PRIM_SEND_FLAGS_RESET_LINK;
2370 	fc->Function = MPI_FUNCTION_FC_PRIMITIVE_SEND;
2371 	fc->MsgContext = htole32(req->index | fc_els_handler_id);
2372 	mpt_send_cmd(mpt, req);
2373 	if (dowait) {
2374 		r = mpt_wait_req(mpt, req, REQ_STATE_DONE,
2375 		    REQ_STATE_DONE, FALSE, 60 * 1000);
2376 		if (r == 0) {
2377 			mpt_free_request(mpt, req);
2378 		}
2379 	}
2380 	return (r);
2381 }
2382 
2383 static int
2384 mpt_cam_event(struct mpt_softc *mpt, request_t *req,
2385 	      MSG_EVENT_NOTIFY_REPLY *msg)
2386 {
2387 	uint32_t data0, data1;
2388 
2389 	data0 = le32toh(msg->Data[0]);
2390 	data1 = le32toh(msg->Data[1]);
2391 	switch(msg->Event & 0xFF) {
2392 	case MPI_EVENT_UNIT_ATTENTION:
2393 		mpt_prt(mpt, "UNIT ATTENTION: Bus: 0x%02x TargetID: 0x%02x\n",
2394 		    (data0 >> 8) & 0xff, data0 & 0xff);
2395 		break;
2396 
2397 	case MPI_EVENT_IOC_BUS_RESET:
2398 		/* We generated a bus reset */
2399 		mpt_prt(mpt, "IOC Generated Bus Reset Port: %d\n",
2400 		    (data0 >> 8) & 0xff);
2401 		xpt_async(AC_BUS_RESET, mpt->path, NULL);
2402 		break;
2403 
2404 	case MPI_EVENT_EXT_BUS_RESET:
2405 		/* Someone else generated a bus reset */
2406 		mpt_prt(mpt, "External Bus Reset Detected\n");
2407 		/*
2408 		 * These replies don't return EventData like the MPI
2409 		 * spec says they do
2410 		 */
2411 		xpt_async(AC_BUS_RESET, mpt->path, NULL);
2412 		break;
2413 
2414 	case MPI_EVENT_RESCAN:
2415 #if __FreeBSD_version >= 600000
2416 	{
2417 		union ccb *ccb;
2418 		uint32_t pathid;
2419 		/*
2420 		 * In general this means a device has been added to the loop.
2421 		 */
2422 		mpt_prt(mpt, "Rescan Port: %d\n", (data0 >> 8) & 0xff);
2423 		if (mpt->ready == 0) {
2424 			break;
2425 		}
2426 		if (mpt->phydisk_sim) {
2427 			pathid = cam_sim_path(mpt->phydisk_sim);
2428 		} else {
2429 			pathid = cam_sim_path(mpt->sim);
2430 		}
2431 		MPTLOCK_2_CAMLOCK(mpt);
2432 		/*
2433 		 * Allocate a CCB, create a wildcard path for this bus,
2434 		 * and schedule a rescan.
2435 		 */
2436 		ccb = xpt_alloc_ccb_nowait();
2437 		if (ccb == NULL) {
2438 			mpt_prt(mpt, "unable to alloc CCB for rescan\n");
2439 			CAMLOCK_2_MPTLOCK(mpt);
2440 			break;
2441 		}
2442 
2443 		if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, pathid,
2444 		    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
2445 			CAMLOCK_2_MPTLOCK(mpt);
2446 			mpt_prt(mpt, "unable to create path for rescan\n");
2447 			xpt_free_ccb(ccb);
2448 			break;
2449 		}
2450 		xpt_rescan(ccb);
2451 		CAMLOCK_2_MPTLOCK(mpt);
2452 		break;
2453 	}
2454 #else
2455 		mpt_prt(mpt, "Rescan Port: %d\n", (data0 >> 8) & 0xff);
2456 		break;
2457 #endif
2458 	case MPI_EVENT_LINK_STATUS_CHANGE:
2459 		mpt_prt(mpt, "Port %d: LinkState: %s\n",
2460 		    (data1 >> 8) & 0xff,
2461 		    ((data0 & 0xff) == 0)?  "Failed" : "Active");
2462 		break;
2463 
2464 	case MPI_EVENT_LOOP_STATE_CHANGE:
2465 		switch ((data0 >> 16) & 0xff) {
2466 		case 0x01:
2467 			mpt_prt(mpt,
2468 			    "Port 0x%x: FC LinkEvent: LIP(%02x,%02x) "
2469 			    "(Loop Initialization)\n",
2470 			    (data1 >> 8) & 0xff,
2471 			    (data0 >> 8) & 0xff,
2472 			    (data0     ) & 0xff);
2473 			switch ((data0 >> 8) & 0xff) {
2474 			case 0xF7:
2475 				if ((data0 & 0xff) == 0xF7) {
2476 					mpt_prt(mpt, "Device needs AL_PA\n");
2477 				} else {
2478 					mpt_prt(mpt, "Device %02x doesn't like "
2479 					    "FC performance\n",
2480 					    data0 & 0xFF);
2481 				}
2482 				break;
2483 			case 0xF8:
2484 				if ((data0 & 0xff) == 0xF7) {
2485 					mpt_prt(mpt, "Device had loop failure "
2486 					    "at its receiver prior to acquiring"
2487 					    " AL_PA\n");
2488 				} else {
2489 					mpt_prt(mpt, "Device %02x detected loop"
2490 					    " failure at its receiver\n",
2491 					    data0 & 0xFF);
2492 				}
2493 				break;
2494 			default:
2495 				mpt_prt(mpt, "Device %02x requests that device "
2496 				    "%02x reset itself\n",
2497 				    data0 & 0xFF,
2498 				    (data0 >> 8) & 0xFF);
2499 				break;
2500 			}
2501 			break;
2502 		case 0x02:
2503 			mpt_prt(mpt, "Port 0x%x: FC LinkEvent: "
2504 			    "LPE(%02x,%02x) (Loop Port Enable)\n",
2505 			    (data1 >> 8) & 0xff, /* Port */
2506 			    (data0 >>  8) & 0xff, /* Character 3 */
2507 			    (data0      ) & 0xff  /* Character 4 */);
2508 			break;
2509 		case 0x03:
2510 			mpt_prt(mpt, "Port 0x%x: FC LinkEvent: "
2511 			    "LPB(%02x,%02x) (Loop Port Bypass)\n",
2512 			    (data1 >> 8) & 0xff, /* Port */
2513 			    (data0 >> 8) & 0xff, /* Character 3 */
2514 			    (data0     ) & 0xff  /* Character 4 */);
2515 			break;
2516 		default:
2517 			mpt_prt(mpt, "Port 0x%x: FC LinkEvent: Unknown "
2518 			    "FC event (%02x %02x %02x)\n",
2519 			    (data1 >> 8) & 0xff, /* Port */
2520 			    (data0 >> 16) & 0xff, /* Event */
2521 			    (data0 >>  8) & 0xff, /* Character 3 */
2522 			    (data0      ) & 0xff  /* Character 4 */);
2523 		}
2524 		break;
2525 
2526 	case MPI_EVENT_LOGOUT:
2527 		mpt_prt(mpt, "FC Logout Port: %d N_PortID: %02x\n",
2528 		    (data1 >> 8) & 0xff, data0);
2529 		break;
2530 	case MPI_EVENT_QUEUE_FULL:
2531 	{
2532 		struct cam_sim *sim;
2533 		struct cam_path *tmppath;
2534 		struct ccb_relsim crs;
2535 		PTR_EVENT_DATA_QUEUE_FULL pqf;
2536 		lun_id_t lun_id;
2537 
2538 		pqf = (PTR_EVENT_DATA_QUEUE_FULL)msg->Data;
2539 		pqf->CurrentDepth = le16toh(pqf->CurrentDepth);
2540 		mpt_prt(mpt, "QUEUE FULL EVENT: Bus 0x%02x Target 0x%02x Depth "
2541 		    "%d\n", pqf->Bus, pqf->TargetID, pqf->CurrentDepth);
2542 		if (mpt->phydisk_sim) {
2543 			sim = mpt->phydisk_sim;
2544 		} else {
2545 			sim = mpt->sim;
2546 		}
2547 		MPTLOCK_2_CAMLOCK(mpt);
2548 		for (lun_id = 0; lun_id < MPT_MAX_LUNS; lun_id++) {
2549 			if (xpt_create_path(&tmppath, NULL, cam_sim_path(sim),
2550 			    pqf->TargetID, lun_id) != CAM_REQ_CMP) {
2551 				mpt_prt(mpt, "unable to create a path to send "
2552 				    "XPT_REL_SIMQ");
2553 				CAMLOCK_2_MPTLOCK(mpt);
2554 				break;
2555 			}
2556 			xpt_setup_ccb(&crs.ccb_h, tmppath, 5);
2557 			crs.ccb_h.func_code = XPT_REL_SIMQ;
2558 			crs.release_flags = RELSIM_ADJUST_OPENINGS;
2559 			crs.openings = pqf->CurrentDepth - 1;
2560 			xpt_action((union ccb *)&crs);
2561 			if (crs.ccb_h.status != CAM_REQ_CMP) {
2562 				mpt_prt(mpt, "XPT_REL_SIMQ failed\n");
2563 			}
2564 			xpt_free_path(tmppath);
2565 		}
2566 		CAMLOCK_2_MPTLOCK(mpt);
2567 		break;
2568 	}
2569 	case MPI_EVENT_EVENT_CHANGE:
2570 	case MPI_EVENT_INTEGRATED_RAID:
2571 	case MPI_EVENT_SAS_DEVICE_STATUS_CHANGE:
2572 	case MPI_EVENT_SAS_SES:
2573 		break;
2574 	default:
2575 		mpt_lprt(mpt, MPT_PRT_WARN, "mpt_cam_event: 0x%x\n",
2576 			 (unsigned)msg->Event & 0xFF);
2577 		return (0);
2578 	}
2579 	return (1);
2580 }
2581 
2582 /*
2583  * Reply path for all SCSI I/O requests, called from our
2584  * interrupt handler by extracting our handler index from
2585  * the MsgContext field of the reply from the IOC.
2586  *
2587  * This routine is optimized for the common case of a
2588  * completion without error.  All exception handling is
2589  * offloaded to non-inlined helper routines to minimize
2590  * cache footprint.
2591  */
2592 static int
2593 mpt_scsi_reply_handler(struct mpt_softc *mpt, request_t *req,
2594     uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame)
2595 {
2596 	MSG_SCSI_IO_REQUEST *scsi_req;
2597 	union ccb *ccb;
2598 
2599 	if (req->state == REQ_STATE_FREE) {
2600 		mpt_prt(mpt, "mpt_scsi_reply_handler: req already free\n");
2601 		return (TRUE);
2602 	}
2603 
2604 	scsi_req = (MSG_SCSI_IO_REQUEST *)req->req_vbuf;
2605 	ccb = req->ccb;
2606 	if (ccb == NULL) {
2607 		mpt_prt(mpt, "mpt_scsi_reply_handler: req %p:%u with no ccb\n",
2608 		    req, req->serno);
2609 		return (TRUE);
2610 	}
2611 
2612 	mpt_req_untimeout(req, mpt_timeout, ccb);
2613 	ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
2614 
2615 	if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
2616 		bus_dmasync_op_t op;
2617 
2618 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
2619 			op = BUS_DMASYNC_POSTREAD;
2620 		else
2621 			op = BUS_DMASYNC_POSTWRITE;
2622 		bus_dmamap_sync(mpt->buffer_dmat, req->dmap, op);
2623 		bus_dmamap_unload(mpt->buffer_dmat, req->dmap);
2624 	}
2625 
2626 	if (reply_frame == NULL) {
2627 		/*
2628 		 * Context only reply, completion without error status.
2629 		 */
2630 		ccb->csio.resid = 0;
2631 		mpt_set_ccb_status(ccb, CAM_REQ_CMP);
2632 		ccb->csio.scsi_status = SCSI_STATUS_OK;
2633 	} else {
2634 		mpt_scsi_reply_frame_handler(mpt, req, reply_frame);
2635 	}
2636 
2637 	if (mpt->outofbeer) {
2638 		ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
2639 		mpt->outofbeer = 0;
2640 		mpt_lprt(mpt, MPT_PRT_DEBUG, "THAWQ\n");
2641 	}
2642 	if (scsi_req->CDB[0] == INQUIRY && (scsi_req->CDB[1] & SI_EVPD) == 0) {
2643 		struct scsi_inquiry_data *iq =
2644 		    (struct scsi_inquiry_data *)ccb->csio.data_ptr;
2645 		if (scsi_req->Function ==
2646 		    MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
2647 			/*
2648 			 * Fake out the device type so that only the
2649 			 * pass-thru device will attach.
2650 			 */
2651 			iq->device &= ~0x1F;
2652 			iq->device |= T_NODEVICE;
2653 		}
2654 	}
2655 	if (mpt->verbose == MPT_PRT_DEBUG) {
2656 		mpt_prt(mpt, "mpt_scsi_reply_handler: %p:%u complete\n",
2657 		    req, req->serno);
2658 	}
2659 	KASSERT(ccb->ccb_h.status, ("zero ccb sts at %d\n", __LINE__));
2660 	MPTLOCK_2_CAMLOCK(mpt);
2661 	xpt_done(ccb);
2662 	CAMLOCK_2_MPTLOCK(mpt);
2663 	if ((req->state & REQ_STATE_TIMEDOUT) == 0) {
2664 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
2665 	} else {
2666 		mpt_prt(mpt, "completing timedout/aborted req %p:%u\n",
2667 		    req, req->serno);
2668 		TAILQ_REMOVE(&mpt->request_timeout_list, req, links);
2669 	}
2670 	KASSERT((req->state & REQ_STATE_NEED_WAKEUP) == 0,
2671 	    ("CCB req needed wakeup"));
2672 #ifdef	INVARIANTS
2673 	mpt_req_not_spcl(mpt, req, "mpt_scsi_reply_handler", __LINE__);
2674 #endif
2675 	mpt_free_request(mpt, req);
2676 	return (TRUE);
2677 }
2678 
2679 static int
2680 mpt_scsi_tmf_reply_handler(struct mpt_softc *mpt, request_t *req,
2681     uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame)
2682 {
2683 	MSG_SCSI_TASK_MGMT_REPLY *tmf_reply;
2684 
2685 	KASSERT(req == mpt->tmf_req, ("TMF Reply not using mpt->tmf_req"));
2686 #ifdef	INVARIANTS
2687 	mpt_req_not_spcl(mpt, req, "mpt_scsi_tmf_reply_handler", __LINE__);
2688 #endif
2689 	tmf_reply = (MSG_SCSI_TASK_MGMT_REPLY *)reply_frame;
2690 	/* Record IOC Status and Response Code of TMF for any waiters. */
2691 	req->IOCStatus = le16toh(tmf_reply->IOCStatus);
2692 	req->ResponseCode = tmf_reply->ResponseCode;
2693 
2694 	mpt_lprt(mpt, MPT_PRT_DEBUG, "TMF complete: req %p:%u status 0x%x\n",
2695 	    req, req->serno, le16toh(tmf_reply->IOCStatus));
2696 	TAILQ_REMOVE(&mpt->request_pending_list, req, links);
2697 	if ((req->state & REQ_STATE_NEED_WAKEUP) != 0) {
2698 		req->state |= REQ_STATE_DONE;
2699 		wakeup(req);
2700 	} else {
2701 		mpt->tmf_req->state = REQ_STATE_FREE;
2702 	}
2703 	return (TRUE);
2704 }
2705 
2706 /*
2707  * XXX: Move to definitions file
2708  */
2709 #define	ELS	0x22
2710 #define	FC4LS	0x32
2711 #define	ABTS	0x81
2712 #define	BA_ACC	0x84
2713 
2714 #define	LS_RJT	0x01
2715 #define	LS_ACC	0x02
2716 #define	PLOGI	0x03
2717 #define	LOGO	0x05
2718 #define SRR	0x14
2719 #define PRLI	0x20
2720 #define PRLO	0x21
2721 #define ADISC	0x52
2722 #define RSCN	0x61
2723 
2724 static void
2725 mpt_fc_els_send_response(struct mpt_softc *mpt, request_t *req,
2726     PTR_MSG_LINK_SERVICE_BUFFER_POST_REPLY rp, U8 length)
2727 {
2728 	uint32_t fl;
2729 	MSG_LINK_SERVICE_RSP_REQUEST tmp;
2730 	PTR_MSG_LINK_SERVICE_RSP_REQUEST rsp;
2731 
2732 	/*
2733 	 * We are going to reuse the ELS request to send this response back.
2734 	 */
2735 	rsp = &tmp;
2736 	memset(rsp, 0, sizeof(*rsp));
2737 
2738 #ifdef	USE_IMMEDIATE_LINK_DATA
2739 	/*
2740 	 * Apparently the IMMEDIATE stuff doesn't seem to work.
2741 	 */
2742 	rsp->RspFlags = LINK_SERVICE_RSP_FLAGS_IMMEDIATE;
2743 #endif
2744 	rsp->RspLength = length;
2745 	rsp->Function = MPI_FUNCTION_FC_LINK_SRVC_RSP;
2746 	rsp->MsgContext = htole32(req->index | fc_els_handler_id);
2747 
2748 	/*
2749 	 * Copy over information from the original reply frame to
2750 	 * it's correct place in the response.
2751 	 */
2752 	memcpy((U8 *)rsp + 0x0c, (U8 *)rp + 0x1c, 24);
2753 
2754 	/*
2755 	 * And now copy back the temporary area to the original frame.
2756 	 */
2757 	memcpy(req->req_vbuf, rsp, sizeof (MSG_LINK_SERVICE_RSP_REQUEST));
2758 	rsp = req->req_vbuf;
2759 
2760 #ifdef	USE_IMMEDIATE_LINK_DATA
2761 	memcpy((U8 *)&rsp->SGL, &((U8 *)req->req_vbuf)[MPT_RQSL(mpt)], length);
2762 #else
2763 {
2764 	PTR_SGE_SIMPLE32 se = (PTR_SGE_SIMPLE32) &rsp->SGL;
2765 	bus_addr_t paddr = req->req_pbuf;
2766 	paddr += MPT_RQSL(mpt);
2767 
2768 	fl =
2769 		MPI_SGE_FLAGS_HOST_TO_IOC	|
2770 		MPI_SGE_FLAGS_SIMPLE_ELEMENT	|
2771 		MPI_SGE_FLAGS_LAST_ELEMENT	|
2772 		MPI_SGE_FLAGS_END_OF_LIST	|
2773 		MPI_SGE_FLAGS_END_OF_BUFFER;
2774 	fl <<= MPI_SGE_FLAGS_SHIFT;
2775 	fl |= (length);
2776 	se->FlagsLength = htole32(fl);
2777 	se->Address = htole32((uint32_t) paddr);
2778 }
2779 #endif
2780 
2781 	/*
2782 	 * Send it on...
2783 	 */
2784 	mpt_send_cmd(mpt, req);
2785 }
2786 
2787 static int
2788 mpt_fc_els_reply_handler(struct mpt_softc *mpt, request_t *req,
2789     uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame)
2790 {
2791 	PTR_MSG_LINK_SERVICE_BUFFER_POST_REPLY rp =
2792 	    (PTR_MSG_LINK_SERVICE_BUFFER_POST_REPLY) reply_frame;
2793 	U8 rctl;
2794 	U8 type;
2795 	U8 cmd;
2796 	U16 status = le16toh(reply_frame->IOCStatus);
2797 	U32 *elsbuf;
2798 	int ioindex;
2799 	int do_refresh = TRUE;
2800 
2801 #ifdef	INVARIANTS
2802 	KASSERT(mpt_req_on_free_list(mpt, req) == 0,
2803 	    ("fc_els_reply_handler: req %p:%u for function %x on freelist!",
2804 	    req, req->serno, rp->Function));
2805 	if (rp->Function != MPI_FUNCTION_FC_PRIMITIVE_SEND) {
2806 		mpt_req_spcl(mpt, req, "fc_els_reply_handler", __LINE__);
2807 	} else {
2808 		mpt_req_not_spcl(mpt, req, "fc_els_reply_handler", __LINE__);
2809 	}
2810 #endif
2811 	mpt_lprt(mpt, MPT_PRT_DEBUG,
2812 	    "FC_ELS Complete: req %p:%u, reply %p function %x\n",
2813 	    req, req->serno, reply_frame, reply_frame->Function);
2814 
2815 	if  (status != MPI_IOCSTATUS_SUCCESS) {
2816 		mpt_prt(mpt, "ELS REPLY STATUS 0x%x for Function %x\n",
2817 		    status, reply_frame->Function);
2818 		if (status == MPI_IOCSTATUS_INVALID_STATE) {
2819 			/*
2820 			 * XXX: to get around shutdown issue
2821 			 */
2822 			mpt->disabled = 1;
2823 			return (TRUE);
2824 		}
2825 		return (TRUE);
2826 	}
2827 
2828 	/*
2829 	 * If the function of a link service response, we recycle the
2830 	 * response to be a refresh for a new link service request.
2831 	 *
2832 	 * The request pointer is bogus in this case and we have to fetch
2833 	 * it based upon the TransactionContext.
2834 	 */
2835 	if (rp->Function == MPI_FUNCTION_FC_LINK_SRVC_RSP) {
2836 		/* Freddie Uncle Charlie Katie */
2837 		/* We don't get the IOINDEX as part of the Link Svc Rsp */
2838 		for (ioindex = 0; ioindex < mpt->els_cmds_allocated; ioindex++)
2839 			if (mpt->els_cmd_ptrs[ioindex] == req) {
2840 				break;
2841 			}
2842 
2843 		KASSERT(ioindex < mpt->els_cmds_allocated,
2844 		    ("can't find my mommie!"));
2845 
2846 		/* remove from active list as we're going to re-post it */
2847 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
2848 		req->state &= ~REQ_STATE_QUEUED;
2849 		req->state |= REQ_STATE_DONE;
2850 		mpt_fc_post_els(mpt, req, ioindex);
2851 		return (TRUE);
2852 	}
2853 
2854 	if (rp->Function == MPI_FUNCTION_FC_PRIMITIVE_SEND) {
2855 		/* remove from active list as we're done */
2856 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
2857 		req->state &= ~REQ_STATE_QUEUED;
2858 		req->state |= REQ_STATE_DONE;
2859 		if (req->state & REQ_STATE_TIMEDOUT) {
2860 			mpt_lprt(mpt, MPT_PRT_DEBUG,
2861 			    "Sync Primitive Send Completed After Timeout\n");
2862 			mpt_free_request(mpt, req);
2863 		} else if ((req->state & REQ_STATE_NEED_WAKEUP) == 0) {
2864 			mpt_lprt(mpt, MPT_PRT_DEBUG,
2865 			    "Async Primitive Send Complete\n");
2866 			mpt_free_request(mpt, req);
2867 		} else {
2868 			mpt_lprt(mpt, MPT_PRT_DEBUG,
2869 			    "Sync Primitive Send Complete- Waking Waiter\n");
2870 			wakeup(req);
2871 		}
2872 		return (TRUE);
2873 	}
2874 
2875 	if (rp->Function != MPI_FUNCTION_FC_LINK_SRVC_BUF_POST) {
2876 		mpt_prt(mpt, "unexpected ELS_REPLY: Function 0x%x Flags %x "
2877 		    "Length %d Message Flags %x\n", rp->Function, rp->Flags,
2878 		    rp->MsgLength, rp->MsgFlags);
2879 		return (TRUE);
2880 	}
2881 
2882 	if (rp->MsgLength <= 5) {
2883 		/*
2884 		 * This is just a ack of an original ELS buffer post
2885 		 */
2886 		mpt_lprt(mpt, MPT_PRT_DEBUG,
2887 		    "RECV'd ACK of FC_ELS buf post %p:%u\n", req, req->serno);
2888 		return (TRUE);
2889 	}
2890 
2891 
2892 	rctl = (le32toh(rp->Rctl_Did) & MPI_FC_RCTL_MASK) >> MPI_FC_RCTL_SHIFT;
2893 	type = (le32toh(rp->Type_Fctl) & MPI_FC_TYPE_MASK) >> MPI_FC_TYPE_SHIFT;
2894 
2895 	elsbuf = &((U32 *)req->req_vbuf)[MPT_RQSL(mpt)/sizeof (U32)];
2896 	cmd = be32toh(elsbuf[0]) >> 24;
2897 
2898 	if (rp->Flags & MPI_LS_BUF_POST_REPLY_FLAG_NO_RSP_NEEDED) {
2899 		mpt_lprt(mpt, MPT_PRT_ALWAYS, "ELS_REPLY: response unneeded\n");
2900 		return (TRUE);
2901 	}
2902 
2903 	ioindex = le32toh(rp->TransactionContext);
2904 	req = mpt->els_cmd_ptrs[ioindex];
2905 
2906 	if (rctl == ELS && type == 1) {
2907 		switch (cmd) {
2908 		case PRLI:
2909 			/*
2910 			 * Send back a PRLI ACC
2911 			 */
2912 			mpt_prt(mpt, "PRLI from 0x%08x%08x\n",
2913 			    le32toh(rp->Wwn.PortNameHigh),
2914 			    le32toh(rp->Wwn.PortNameLow));
2915 			elsbuf[0] = htobe32(0x02100014);
2916 			elsbuf[1] |= htobe32(0x00000100);
2917 			elsbuf[4] = htobe32(0x00000002);
2918 			if (mpt->role & MPT_ROLE_TARGET)
2919 				elsbuf[4] |= htobe32(0x00000010);
2920 			if (mpt->role & MPT_ROLE_INITIATOR)
2921 				elsbuf[4] |= htobe32(0x00000020);
2922 			/* remove from active list as we're done */
2923 			TAILQ_REMOVE(&mpt->request_pending_list, req, links);
2924 			req->state &= ~REQ_STATE_QUEUED;
2925 			req->state |= REQ_STATE_DONE;
2926 			mpt_fc_els_send_response(mpt, req, rp, 20);
2927 			do_refresh = FALSE;
2928 			break;
2929 		case PRLO:
2930 			memset(elsbuf, 0, 5 * (sizeof (U32)));
2931 			elsbuf[0] = htobe32(0x02100014);
2932 			elsbuf[1] = htobe32(0x08000100);
2933 			mpt_prt(mpt, "PRLO from 0x%08x%08x\n",
2934 			    le32toh(rp->Wwn.PortNameHigh),
2935 			    le32toh(rp->Wwn.PortNameLow));
2936 			/* remove from active list as we're done */
2937 			TAILQ_REMOVE(&mpt->request_pending_list, req, links);
2938 			req->state &= ~REQ_STATE_QUEUED;
2939 			req->state |= REQ_STATE_DONE;
2940 			mpt_fc_els_send_response(mpt, req, rp, 20);
2941 			do_refresh = FALSE;
2942 			break;
2943 		default:
2944 			mpt_prt(mpt, "ELS TYPE 1 COMMAND: %x\n", cmd);
2945 			break;
2946 		}
2947 	} else if (rctl == ABTS && type == 0) {
2948 		uint16_t rx_id = le16toh(rp->Rxid);
2949 		uint16_t ox_id = le16toh(rp->Oxid);
2950 		request_t *tgt_req = NULL;
2951 
2952 		mpt_prt(mpt,
2953 		    "ELS: ABTS OX_ID 0x%x RX_ID 0x%x from 0x%08x%08x\n",
2954 		    ox_id, rx_id, le32toh(rp->Wwn.PortNameHigh),
2955 		    le32toh(rp->Wwn.PortNameLow));
2956 		if (rx_id >= mpt->mpt_max_tgtcmds) {
2957 			mpt_prt(mpt, "Bad RX_ID 0x%x\n", rx_id);
2958 		} else if (mpt->tgt_cmd_ptrs == NULL) {
2959 			mpt_prt(mpt, "No TGT CMD PTRS\n");
2960 		} else {
2961 			tgt_req = mpt->tgt_cmd_ptrs[rx_id];
2962 		}
2963 		if (tgt_req) {
2964 			mpt_tgt_state_t *tgt = MPT_TGT_STATE(mpt, tgt_req);
2965 			union ccb *ccb = tgt->ccb;
2966 			uint32_t ct_id;
2967 
2968 			/*
2969 			 * Check to make sure we have the correct command
2970 			 * The reply descriptor in the target state should
2971 			 * should contain an IoIndex that should match the
2972 			 * RX_ID.
2973 			 *
2974 			 * It'd be nice to have OX_ID to crosscheck with
2975 			 * as well.
2976 			 */
2977 			ct_id = GET_IO_INDEX(tgt->reply_desc);
2978 
2979 			if (ct_id != rx_id) {
2980 				mpt_lprt(mpt, MPT_PRT_ERROR, "ABORT Mismatch: "
2981 				    "RX_ID received=0x%x; RX_ID in cmd=0x%x\n",
2982 				    rx_id, ct_id);
2983 				goto skip;
2984 			}
2985 
2986 			ccb = tgt->ccb;
2987 			if (ccb) {
2988 				mpt_prt(mpt,
2989 				    "CCB (%p): lun %u flags %x status %x\n",
2990 				    ccb, ccb->ccb_h.target_lun,
2991 				    ccb->ccb_h.flags, ccb->ccb_h.status);
2992 			}
2993 			mpt_prt(mpt, "target state 0x%x resid %u xfrd %u rpwrd "
2994 			    "%x nxfers %x\n", tgt->state,
2995 			    tgt->resid, tgt->bytes_xfered, tgt->reply_desc,
2996 			    tgt->nxfers);
2997   skip:
2998 			if (mpt_abort_target_cmd(mpt, tgt_req)) {
2999 				mpt_prt(mpt, "unable to start TargetAbort\n");
3000 			}
3001 		} else {
3002 			mpt_prt(mpt, "no back pointer for RX_ID 0x%x\n", rx_id);
3003 		}
3004 		memset(elsbuf, 0, 5 * (sizeof (U32)));
3005 		elsbuf[0] = htobe32(0);
3006 		elsbuf[1] = htobe32((ox_id << 16) | rx_id);
3007 		elsbuf[2] = htobe32(0x000ffff);
3008 		/*
3009 		 * Dork with the reply frame so that the reponse to it
3010 		 * will be correct.
3011 		 */
3012 		rp->Rctl_Did += ((BA_ACC - ABTS) << MPI_FC_RCTL_SHIFT);
3013 		/* remove from active list as we're done */
3014 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
3015 		req->state &= ~REQ_STATE_QUEUED;
3016 		req->state |= REQ_STATE_DONE;
3017 		mpt_fc_els_send_response(mpt, req, rp, 12);
3018 		do_refresh = FALSE;
3019 	} else {
3020 		mpt_prt(mpt, "ELS: RCTL %x TYPE %x CMD %x\n", rctl, type, cmd);
3021 	}
3022 	if (do_refresh == TRUE) {
3023 		/* remove from active list as we're done */
3024 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
3025 		req->state &= ~REQ_STATE_QUEUED;
3026 		req->state |= REQ_STATE_DONE;
3027 		mpt_fc_post_els(mpt, req, ioindex);
3028 	}
3029 	return (TRUE);
3030 }
3031 
3032 /*
3033  * Clean up all SCSI Initiator personality state in response
3034  * to a controller reset.
3035  */
3036 static void
3037 mpt_cam_ioc_reset(struct mpt_softc *mpt, int type)
3038 {
3039 	/*
3040 	 * The pending list is already run down by
3041 	 * the generic handler.  Perform the same
3042 	 * operation on the timed out request list.
3043 	 */
3044 	mpt_complete_request_chain(mpt, &mpt->request_timeout_list,
3045 				   MPI_IOCSTATUS_INVALID_STATE);
3046 
3047 	/*
3048 	 * XXX: We need to repost ELS and Target Command Buffers?
3049 	 */
3050 
3051 	/*
3052 	 * Inform the XPT that a bus reset has occurred.
3053 	 */
3054 	xpt_async(AC_BUS_RESET, mpt->path, NULL);
3055 }
3056 
3057 /*
3058  * Parse additional completion information in the reply
3059  * frame for SCSI I/O requests.
3060  */
3061 static int
3062 mpt_scsi_reply_frame_handler(struct mpt_softc *mpt, request_t *req,
3063 			     MSG_DEFAULT_REPLY *reply_frame)
3064 {
3065 	union ccb *ccb;
3066 	MSG_SCSI_IO_REPLY *scsi_io_reply;
3067 	u_int ioc_status;
3068 	u_int sstate;
3069 
3070 	MPT_DUMP_REPLY_FRAME(mpt, reply_frame);
3071 	KASSERT(reply_frame->Function == MPI_FUNCTION_SCSI_IO_REQUEST
3072 	     || reply_frame->Function == MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH,
3073 		("MPT SCSI I/O Handler called with incorrect reply type"));
3074 	KASSERT((reply_frame->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY) == 0,
3075 		("MPT SCSI I/O Handler called with continuation reply"));
3076 
3077 	scsi_io_reply = (MSG_SCSI_IO_REPLY *)reply_frame;
3078 	ioc_status = le16toh(scsi_io_reply->IOCStatus);
3079 	ioc_status &= MPI_IOCSTATUS_MASK;
3080 	sstate = scsi_io_reply->SCSIState;
3081 
3082 	ccb = req->ccb;
3083 	ccb->csio.resid =
3084 	    ccb->csio.dxfer_len - le32toh(scsi_io_reply->TransferCount);
3085 
3086 	if ((sstate & MPI_SCSI_STATE_AUTOSENSE_VALID) != 0
3087 	 && (ccb->ccb_h.flags & (CAM_SENSE_PHYS | CAM_SENSE_PTR)) == 0) {
3088 		ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
3089 		ccb->csio.sense_resid =
3090 		    ccb->csio.sense_len - le32toh(scsi_io_reply->SenseCount);
3091 		bcopy(req->sense_vbuf, &ccb->csio.sense_data,
3092 		    min(ccb->csio.sense_len,
3093 		    le32toh(scsi_io_reply->SenseCount)));
3094 	}
3095 
3096 	if ((sstate & MPI_SCSI_STATE_QUEUE_TAG_REJECTED) != 0) {
3097 		/*
3098 		 * Tag messages rejected, but non-tagged retry
3099 		 * was successful.
3100 XXXX
3101 		mpt_set_tags(mpt, devinfo, MPT_QUEUE_NONE);
3102 		 */
3103 	}
3104 
3105 	switch(ioc_status) {
3106 	case MPI_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
3107 		/*
3108 		 * XXX
3109 		 * Linux driver indicates that a zero
3110 		 * transfer length with this error code
3111 		 * indicates a CRC error.
3112 		 *
3113 		 * No need to swap the bytes for checking
3114 		 * against zero.
3115 		 */
3116 		if (scsi_io_reply->TransferCount == 0) {
3117 			mpt_set_ccb_status(ccb, CAM_UNCOR_PARITY);
3118 			break;
3119 		}
3120 		/* FALLTHROUGH */
3121 	case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:
3122 	case MPI_IOCSTATUS_SUCCESS:
3123 	case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR:
3124 		if ((sstate & MPI_SCSI_STATE_NO_SCSI_STATUS) != 0) {
3125 			/*
3126 			 * Status was never returned for this transaction.
3127 			 */
3128 			mpt_set_ccb_status(ccb, CAM_UNEXP_BUSFREE);
3129 		} else if (scsi_io_reply->SCSIStatus != SCSI_STATUS_OK) {
3130 			ccb->csio.scsi_status = scsi_io_reply->SCSIStatus;
3131 			mpt_set_ccb_status(ccb, CAM_SCSI_STATUS_ERROR);
3132 			if ((sstate & MPI_SCSI_STATE_AUTOSENSE_FAILED) != 0)
3133 				mpt_set_ccb_status(ccb, CAM_AUTOSENSE_FAIL);
3134 		} else if ((sstate & MPI_SCSI_STATE_RESPONSE_INFO_VALID) != 0) {
3135 
3136 			/* XXX Handle SPI-Packet and FCP-2 reponse info. */
3137 			mpt_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
3138 		} else
3139 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3140 		break;
3141 	case MPI_IOCSTATUS_SCSI_DATA_OVERRUN:
3142 		mpt_set_ccb_status(ccb, CAM_DATA_RUN_ERR);
3143 		break;
3144 	case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:
3145 		mpt_set_ccb_status(ccb, CAM_UNCOR_PARITY);
3146 		break;
3147 	case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
3148 		/*
3149 		 * Since selection timeouts and "device really not
3150 		 * there" are grouped into this error code, report
3151 		 * selection timeout.  Selection timeouts are
3152 		 * typically retried before giving up on the device
3153 		 * whereas "device not there" errors are considered
3154 		 * unretryable.
3155 		 */
3156 		mpt_set_ccb_status(ccb, CAM_SEL_TIMEOUT);
3157 		break;
3158 	case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:
3159 		mpt_set_ccb_status(ccb, CAM_SEQUENCE_FAIL);
3160 		break;
3161 	case MPI_IOCSTATUS_SCSI_INVALID_BUS:
3162 		mpt_set_ccb_status(ccb, CAM_PATH_INVALID);
3163 		break;
3164 	case MPI_IOCSTATUS_SCSI_INVALID_TARGETID:
3165 		mpt_set_ccb_status(ccb, CAM_TID_INVALID);
3166 		break;
3167 	case MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
3168 		ccb->ccb_h.status = CAM_UA_TERMIO;
3169 		break;
3170 	case MPI_IOCSTATUS_INVALID_STATE:
3171 		/*
3172 		 * The IOC has been reset.  Emulate a bus reset.
3173 		 */
3174 		/* FALLTHROUGH */
3175 	case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:
3176 		ccb->ccb_h.status = CAM_SCSI_BUS_RESET;
3177 		break;
3178 	case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:
3179 	case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:
3180 		/*
3181 		 * Don't clobber any timeout status that has
3182 		 * already been set for this transaction.  We
3183 		 * want the SCSI layer to be able to differentiate
3184 		 * between the command we aborted due to timeout
3185 		 * and any innocent bystanders.
3186 		 */
3187 		if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG)
3188 			break;
3189 		mpt_set_ccb_status(ccb, CAM_REQ_TERMIO);
3190 		break;
3191 
3192 	case MPI_IOCSTATUS_INSUFFICIENT_RESOURCES:
3193 		mpt_set_ccb_status(ccb, CAM_RESRC_UNAVAIL);
3194 		break;
3195 	case MPI_IOCSTATUS_BUSY:
3196 		mpt_set_ccb_status(ccb, CAM_BUSY);
3197 		break;
3198 	case MPI_IOCSTATUS_INVALID_FUNCTION:
3199 	case MPI_IOCSTATUS_INVALID_SGL:
3200 	case MPI_IOCSTATUS_INTERNAL_ERROR:
3201 	case MPI_IOCSTATUS_INVALID_FIELD:
3202 	default:
3203 		/* XXX
3204 		 * Some of the above may need to kick
3205 		 * of a recovery action!!!!
3206 		 */
3207 		ccb->ccb_h.status = CAM_UNREC_HBA_ERROR;
3208 		break;
3209 	}
3210 
3211 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
3212 		mpt_freeze_ccb(ccb);
3213 	}
3214 
3215 	return (TRUE);
3216 }
3217 
3218 static void
3219 mpt_action(struct cam_sim *sim, union ccb *ccb)
3220 {
3221 	struct mpt_softc *mpt;
3222 	struct ccb_trans_settings *cts;
3223 	target_id_t tgt;
3224 	lun_id_t lun;
3225 	int raid_passthru;
3226 
3227 	CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("mpt_action\n"));
3228 
3229 	mpt = (struct mpt_softc *)cam_sim_softc(sim);
3230 	raid_passthru = (sim == mpt->phydisk_sim);
3231 	MPT_LOCK_ASSERT(mpt);
3232 
3233 	tgt = ccb->ccb_h.target_id;
3234 	lun = ccb->ccb_h.target_lun;
3235 	if (raid_passthru &&
3236 	    ccb->ccb_h.func_code != XPT_PATH_INQ &&
3237 	    ccb->ccb_h.func_code != XPT_RESET_BUS &&
3238 	    ccb->ccb_h.func_code != XPT_RESET_DEV) {
3239 		CAMLOCK_2_MPTLOCK(mpt);
3240 		if (mpt_map_physdisk(mpt, ccb, &tgt) != 0) {
3241 			MPTLOCK_2_CAMLOCK(mpt);
3242 			ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
3243 			mpt_set_ccb_status(ccb, CAM_DEV_NOT_THERE);
3244 			xpt_done(ccb);
3245 			return;
3246 		}
3247 		MPTLOCK_2_CAMLOCK(mpt);
3248 	}
3249 	ccb->ccb_h.ccb_mpt_ptr = mpt;
3250 
3251 	switch (ccb->ccb_h.func_code) {
3252 	case XPT_SCSI_IO:	/* Execute the requested I/O operation */
3253 		/*
3254 		 * Do a couple of preliminary checks...
3255 		 */
3256 		if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0) {
3257 			if ((ccb->ccb_h.flags & CAM_CDB_PHYS) != 0) {
3258 				ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
3259 				mpt_set_ccb_status(ccb, CAM_REQ_INVALID);
3260 				break;
3261 			}
3262 		}
3263 		/* Max supported CDB length is 16 bytes */
3264 		/* XXX Unless we implement the new 32byte message type */
3265 		if (ccb->csio.cdb_len >
3266 		    sizeof (((PTR_MSG_SCSI_IO_REQUEST)0)->CDB)) {
3267 			ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
3268 			mpt_set_ccb_status(ccb, CAM_REQ_INVALID);
3269 			break;
3270 		}
3271 #ifdef	MPT_TEST_MULTIPATH
3272 		if (mpt->failure_id == ccb->ccb_h.target_id) {
3273 			ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
3274 			mpt_set_ccb_status(ccb, CAM_SEL_TIMEOUT);
3275 			break;
3276 		}
3277 #endif
3278 		ccb->csio.scsi_status = SCSI_STATUS_OK;
3279 		mpt_start(sim, ccb);
3280 		return;
3281 
3282 	case XPT_RESET_BUS:
3283 		if (raid_passthru) {
3284 			ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
3285 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3286 			break;
3287 		}
3288 	case XPT_RESET_DEV:
3289 		if (ccb->ccb_h.func_code == XPT_RESET_BUS) {
3290 			if (bootverbose) {
3291 				xpt_print(ccb->ccb_h.path, "reset bus\n");
3292 			}
3293 		} else {
3294 			xpt_print(ccb->ccb_h.path, "reset device\n");
3295 		}
3296 		CAMLOCK_2_MPTLOCK(mpt);
3297 		(void) mpt_bus_reset(mpt, tgt, lun, FALSE);
3298 		MPTLOCK_2_CAMLOCK(mpt);
3299 
3300 		/*
3301 		 * mpt_bus_reset is always successful in that it
3302 		 * will fall back to a hard reset should a bus
3303 		 * reset attempt fail.
3304 		 */
3305 		ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
3306 		mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3307 		break;
3308 
3309 	case XPT_ABORT:
3310 	{
3311 		union ccb *accb = ccb->cab.abort_ccb;
3312 		CAMLOCK_2_MPTLOCK(mpt);
3313 		switch (accb->ccb_h.func_code) {
3314 		case XPT_ACCEPT_TARGET_IO:
3315 		case XPT_IMMED_NOTIFY:
3316 			ccb->ccb_h.status = mpt_abort_target_ccb(mpt, ccb);
3317 			break;
3318 		case XPT_CONT_TARGET_IO:
3319 			mpt_prt(mpt, "cannot abort active CTIOs yet\n");
3320 			ccb->ccb_h.status = CAM_UA_ABORT;
3321 			break;
3322 		case XPT_SCSI_IO:
3323 			ccb->ccb_h.status = CAM_UA_ABORT;
3324 			break;
3325 		default:
3326 			ccb->ccb_h.status = CAM_REQ_INVALID;
3327 			break;
3328 		}
3329 		MPTLOCK_2_CAMLOCK(mpt);
3330 		break;
3331 	}
3332 
3333 #ifdef	CAM_NEW_TRAN_CODE
3334 #define	IS_CURRENT_SETTINGS(c)	((c)->type == CTS_TYPE_CURRENT_SETTINGS)
3335 #else
3336 #define	IS_CURRENT_SETTINGS(c)	((c)->flags & CCB_TRANS_CURRENT_SETTINGS)
3337 #endif
3338 #define	DP_DISC_ENABLE	0x1
3339 #define	DP_DISC_DISABL	0x2
3340 #define	DP_DISC		(DP_DISC_ENABLE|DP_DISC_DISABL)
3341 
3342 #define	DP_TQING_ENABLE	0x4
3343 #define	DP_TQING_DISABL	0x8
3344 #define	DP_TQING	(DP_TQING_ENABLE|DP_TQING_DISABL)
3345 
3346 #define	DP_WIDE		0x10
3347 #define	DP_NARROW	0x20
3348 #define	DP_WIDTH	(DP_WIDE|DP_NARROW)
3349 
3350 #define	DP_SYNC		0x40
3351 
3352 	case XPT_SET_TRAN_SETTINGS:	/* Nexus Settings */
3353 	{
3354 #ifdef	CAM_NEW_TRAN_CODE
3355 		struct ccb_trans_settings_scsi *scsi;
3356 		struct ccb_trans_settings_spi *spi;
3357 #endif
3358 		uint8_t dval;
3359 		u_int period;
3360 		u_int offset;
3361 		int i, j;
3362 
3363 		cts = &ccb->cts;
3364 
3365 		if (mpt->is_fc || mpt->is_sas) {
3366 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3367 			break;
3368 		}
3369 
3370 #ifdef	CAM_NEW_TRAN_CODE
3371 		scsi = &cts->proto_specific.scsi;
3372 		spi = &cts->xport_specific.spi;
3373 
3374 		/*
3375 		 * We can be called just to valid transport and proto versions
3376 		 */
3377 		if (scsi->valid == 0 && spi->valid == 0) {
3378 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3379 			break;
3380 		}
3381 #endif
3382 
3383 		/*
3384 		 * Skip attempting settings on RAID volume disks.
3385 		 * Other devices on the bus get the normal treatment.
3386 		 */
3387 		if (mpt->phydisk_sim && raid_passthru == 0 &&
3388 		    mpt_is_raid_volume(mpt, tgt) != 0) {
3389 			mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
3390 			    "no transfer settings for RAID vols\n");
3391 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3392 			break;
3393 		}
3394 
3395 		i = mpt->mpt_port_page2.PortSettings &
3396 		    MPI_SCSIPORTPAGE2_PORT_MASK_NEGO_MASTER_SETTINGS;
3397 		j = mpt->mpt_port_page2.PortFlags &
3398 		    MPI_SCSIPORTPAGE2_PORT_FLAGS_DV_MASK;
3399 		if (i == MPI_SCSIPORTPAGE2_PORT_ALL_MASTER_SETTINGS &&
3400 		    j == MPI_SCSIPORTPAGE2_PORT_FLAGS_OFF_DV) {
3401 			mpt_lprt(mpt, MPT_PRT_ALWAYS,
3402 			    "honoring BIOS transfer negotiations\n");
3403 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3404 			break;
3405 		}
3406 
3407 		dval = 0;
3408 		period = 0;
3409 		offset = 0;
3410 
3411 #ifndef	CAM_NEW_TRAN_CODE
3412 		if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
3413 			dval |= (cts->flags & CCB_TRANS_DISC_ENB) ?
3414 			    DP_DISC_ENABLE : DP_DISC_DISABL;
3415 		}
3416 
3417 		if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
3418 			dval |= (cts->flags & CCB_TRANS_TAG_ENB) ?
3419 			    DP_TQING_ENABLE : DP_TQING_DISABL;
3420 		}
3421 
3422 		if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
3423 			dval |= cts->bus_width ? DP_WIDE : DP_NARROW;
3424 		}
3425 
3426 		if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) &&
3427 		    (cts->valid & CCB_TRANS_SYNC_OFFSET_VALID)) {
3428 			dval |= DP_SYNC;
3429 			period = cts->sync_period;
3430 			offset = cts->sync_offset;
3431 		}
3432 #else
3433 		if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
3434 			dval |= ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0) ?
3435 			    DP_DISC_ENABLE : DP_DISC_DISABL;
3436 		}
3437 
3438 		if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
3439 			dval |= ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) ?
3440 			    DP_TQING_ENABLE : DP_TQING_DISABL;
3441 		}
3442 
3443 		if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
3444 			dval |= (spi->bus_width == MSG_EXT_WDTR_BUS_16_BIT) ?
3445 			    DP_WIDE : DP_NARROW;
3446 		}
3447 
3448 		if (spi->valid & CTS_SPI_VALID_SYNC_OFFSET) {
3449 			dval |= DP_SYNC;
3450 			offset = spi->sync_offset;
3451 		} else {
3452 			PTR_CONFIG_PAGE_SCSI_DEVICE_1 ptr =
3453 			    &mpt->mpt_dev_page1[tgt];
3454 			offset = ptr->RequestedParameters;
3455 			offset &= MPI_SCSIDEVPAGE1_RP_MAX_SYNC_OFFSET_MASK;
3456 			offset >>= MPI_SCSIDEVPAGE1_RP_SHIFT_MAX_SYNC_OFFSET;
3457 		}
3458 		if (spi->valid & CTS_SPI_VALID_SYNC_RATE) {
3459 			dval |= DP_SYNC;
3460 			period = spi->sync_period;
3461 		} else {
3462 			PTR_CONFIG_PAGE_SCSI_DEVICE_1 ptr =
3463 			    &mpt->mpt_dev_page1[tgt];
3464 			period = ptr->RequestedParameters;
3465 			period &= MPI_SCSIDEVPAGE1_RP_MIN_SYNC_PERIOD_MASK;
3466 			period >>= MPI_SCSIDEVPAGE1_RP_SHIFT_MIN_SYNC_PERIOD;
3467 		}
3468 #endif
3469 		CAMLOCK_2_MPTLOCK(mpt);
3470 		if (dval & DP_DISC_ENABLE) {
3471 			mpt->mpt_disc_enable |= (1 << tgt);
3472 		} else if (dval & DP_DISC_DISABL) {
3473 			mpt->mpt_disc_enable &= ~(1 << tgt);
3474 		}
3475 		if (dval & DP_TQING_ENABLE) {
3476 			mpt->mpt_tag_enable |= (1 << tgt);
3477 		} else if (dval & DP_TQING_DISABL) {
3478 			mpt->mpt_tag_enable &= ~(1 << tgt);
3479 		}
3480 		if (dval & DP_WIDTH) {
3481 			mpt_setwidth(mpt, tgt, 1);
3482 		}
3483 		if (dval & DP_SYNC) {
3484 			mpt_setsync(mpt, tgt, period, offset);
3485 		}
3486 		if (dval == 0) {
3487 			MPTLOCK_2_CAMLOCK(mpt);
3488 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3489 			break;
3490 		}
3491 		mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
3492 		    "set [%d]: 0x%x period 0x%x offset %d\n",
3493 		    tgt, dval, period, offset);
3494 		if (mpt_update_spi_config(mpt, tgt)) {
3495 			mpt_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
3496 		} else {
3497 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3498 		}
3499 		MPTLOCK_2_CAMLOCK(mpt);
3500 		break;
3501 	}
3502 	case XPT_GET_TRAN_SETTINGS:
3503 	{
3504 #ifdef	CAM_NEW_TRAN_CODE
3505 		struct ccb_trans_settings_scsi *scsi;
3506 		cts = &ccb->cts;
3507 		cts->protocol = PROTO_SCSI;
3508 		if (mpt->is_fc) {
3509 			struct ccb_trans_settings_fc *fc =
3510 			    &cts->xport_specific.fc;
3511 			cts->protocol_version = SCSI_REV_SPC;
3512 			cts->transport = XPORT_FC;
3513 			cts->transport_version = 0;
3514 			fc->valid = CTS_FC_VALID_SPEED;
3515 			fc->bitrate = 100000;
3516 		} else if (mpt->is_sas) {
3517 			struct ccb_trans_settings_sas *sas =
3518 			    &cts->xport_specific.sas;
3519 			cts->protocol_version = SCSI_REV_SPC2;
3520 			cts->transport = XPORT_SAS;
3521 			cts->transport_version = 0;
3522 			sas->valid = CTS_SAS_VALID_SPEED;
3523 			sas->bitrate = 300000;
3524 		} else {
3525 			cts->protocol_version = SCSI_REV_2;
3526 			cts->transport = XPORT_SPI;
3527 			cts->transport_version = 2;
3528 			if (mpt_get_spi_settings(mpt, cts) != 0) {
3529 				mpt_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
3530 				break;
3531 			}
3532 		}
3533 		scsi = &cts->proto_specific.scsi;
3534 		scsi->valid = CTS_SCSI_VALID_TQ;
3535 		scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
3536 #else
3537 		cts = &ccb->cts;
3538 		if (mpt->is_fc) {
3539 			cts->flags = CCB_TRANS_TAG_ENB | CCB_TRANS_DISC_ENB;
3540 			cts->valid = CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;
3541 			cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
3542 		} else if (mpt->is_sas) {
3543 			cts->flags = CCB_TRANS_TAG_ENB | CCB_TRANS_DISC_ENB;
3544 			cts->valid = CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;
3545 			cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
3546 		} else if (mpt_get_spi_settings(mpt, cts) != 0) {
3547 			mpt_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
3548 			break;
3549 		}
3550 #endif
3551 		mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3552 		break;
3553 	}
3554 	case XPT_CALC_GEOMETRY:
3555 	{
3556 		struct ccb_calc_geometry *ccg;
3557 
3558 		ccg = &ccb->ccg;
3559 		if (ccg->block_size == 0) {
3560 			ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
3561 			mpt_set_ccb_status(ccb, CAM_REQ_INVALID);
3562 			break;
3563 		}
3564 		mpt_calc_geometry(ccg, /*extended*/1);
3565 		KASSERT(ccb->ccb_h.status, ("zero ccb sts at %d\n", __LINE__));
3566 		break;
3567 	}
3568 	case XPT_PATH_INQ:		/* Path routing inquiry */
3569 	{
3570 		struct ccb_pathinq *cpi = &ccb->cpi;
3571 
3572 		cpi->version_num = 1;
3573 		cpi->target_sprt = 0;
3574 		cpi->hba_eng_cnt = 0;
3575 		cpi->max_target = mpt->port_facts[0].MaxDevices - 1;
3576 		/*
3577 		 * FC cards report MAX_DEVICES of 512, but
3578 		 * the MSG_SCSI_IO_REQUEST target id field
3579 		 * is only 8 bits. Until we fix the driver
3580 		 * to support 'channels' for bus overflow,
3581 		 * just limit it.
3582 		 */
3583 		if (cpi->max_target > 255) {
3584 			cpi->max_target = 255;
3585 		}
3586 
3587 		/*
3588 		 * VMware ESX reports > 16 devices and then dies when we probe.
3589 		 */
3590 		if (mpt->is_spi && cpi->max_target > 15) {
3591 			cpi->max_target = 15;
3592 		}
3593 		if (mpt->is_spi)
3594 			cpi->max_lun = 7;
3595 		else
3596 			cpi->max_lun = MPT_MAX_LUNS;
3597 		cpi->initiator_id = mpt->mpt_ini_id;
3598 		cpi->bus_id = cam_sim_bus(sim);
3599 
3600 		/*
3601 		 * The base speed is the speed of the underlying connection.
3602 		 */
3603 #ifdef	CAM_NEW_TRAN_CODE
3604 		cpi->protocol = PROTO_SCSI;
3605 		if (mpt->is_fc) {
3606 			cpi->hba_misc = PIM_NOBUSRESET;
3607 			cpi->base_transfer_speed = 100000;
3608 			cpi->hba_inquiry = PI_TAG_ABLE;
3609 			cpi->transport = XPORT_FC;
3610 			cpi->transport_version = 0;
3611 			cpi->protocol_version = SCSI_REV_SPC;
3612 		} else if (mpt->is_sas) {
3613 			cpi->hba_misc = PIM_NOBUSRESET;
3614 			cpi->base_transfer_speed = 300000;
3615 			cpi->hba_inquiry = PI_TAG_ABLE;
3616 			cpi->transport = XPORT_SAS;
3617 			cpi->transport_version = 0;
3618 			cpi->protocol_version = SCSI_REV_SPC2;
3619 		} else {
3620 			cpi->hba_misc = PIM_SEQSCAN;
3621 			cpi->base_transfer_speed = 3300;
3622 			cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
3623 			cpi->transport = XPORT_SPI;
3624 			cpi->transport_version = 2;
3625 			cpi->protocol_version = SCSI_REV_2;
3626 		}
3627 #else
3628 		if (mpt->is_fc) {
3629 			cpi->hba_misc = PIM_NOBUSRESET;
3630 			cpi->base_transfer_speed = 100000;
3631 			cpi->hba_inquiry = PI_TAG_ABLE;
3632 		} else if (mpt->is_sas) {
3633 			cpi->hba_misc = PIM_NOBUSRESET;
3634 			cpi->base_transfer_speed = 300000;
3635 			cpi->hba_inquiry = PI_TAG_ABLE;
3636 		} else {
3637 			cpi->hba_misc = PIM_SEQSCAN;
3638 			cpi->base_transfer_speed = 3300;
3639 			cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
3640 		}
3641 #endif
3642 
3643 		/*
3644 		 * We give our fake RAID passhtru bus a width that is MaxVolumes
3645 		 * wide and restrict it to one lun.
3646 		 */
3647 		if (raid_passthru) {
3648 			cpi->max_target = mpt->ioc_page2->MaxPhysDisks - 1;
3649 			cpi->initiator_id = cpi->max_target + 1;
3650 			cpi->max_lun = 0;
3651 		}
3652 
3653 		if ((mpt->role & MPT_ROLE_INITIATOR) == 0) {
3654 			cpi->hba_misc |= PIM_NOINITIATOR;
3655 		}
3656 		if (mpt->is_fc && (mpt->role & MPT_ROLE_TARGET)) {
3657 			cpi->target_sprt =
3658 			    PIT_PROCESSOR | PIT_DISCONNECT | PIT_TERM_IO;
3659 		} else {
3660 			cpi->target_sprt = 0;
3661 		}
3662 		strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
3663 		strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
3664 		strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
3665 		cpi->unit_number = cam_sim_unit(sim);
3666 		cpi->ccb_h.status = CAM_REQ_CMP;
3667 		break;
3668 	}
3669 	case XPT_EN_LUN:		/* Enable LUN as a target */
3670 	{
3671 		int result;
3672 
3673 		CAMLOCK_2_MPTLOCK(mpt);
3674 		if (ccb->cel.enable)
3675 			result = mpt_enable_lun(mpt,
3676 			    ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
3677 		else
3678 			result = mpt_disable_lun(mpt,
3679 			    ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
3680 		MPTLOCK_2_CAMLOCK(mpt);
3681 		if (result == 0) {
3682 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
3683 		} else {
3684 			mpt_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
3685 		}
3686 		break;
3687 	}
3688 	case XPT_NOTIFY_ACK:		/* recycle notify ack */
3689 	case XPT_IMMED_NOTIFY:		/* Add Immediate Notify Resource */
3690 	case XPT_ACCEPT_TARGET_IO:	/* Add Accept Target IO Resource */
3691 	{
3692 		tgt_resource_t *trtp;
3693 		lun_id_t lun = ccb->ccb_h.target_lun;
3694 		ccb->ccb_h.sim_priv.entries[0].field = 0;
3695 		ccb->ccb_h.sim_priv.entries[1].ptr = mpt;
3696 		ccb->ccb_h.flags = 0;
3697 
3698 		if (lun == CAM_LUN_WILDCARD) {
3699 			if (ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) {
3700 				mpt_set_ccb_status(ccb, CAM_REQ_INVALID);
3701 				break;
3702 			}
3703 			trtp = &mpt->trt_wildcard;
3704 		} else if (lun >= MPT_MAX_LUNS) {
3705 			mpt_set_ccb_status(ccb, CAM_REQ_INVALID);
3706 			break;
3707 		} else {
3708 			trtp = &mpt->trt[lun];
3709 		}
3710 		CAMLOCK_2_MPTLOCK(mpt);
3711 		if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
3712 			mpt_lprt(mpt, MPT_PRT_DEBUG1,
3713 			    "Put FREE ATIO %p lun %d\n", ccb, lun);
3714 			STAILQ_INSERT_TAIL(&trtp->atios, &ccb->ccb_h,
3715 			    sim_links.stqe);
3716 		} else if (ccb->ccb_h.func_code == XPT_IMMED_NOTIFY) {
3717 			mpt_lprt(mpt, MPT_PRT_DEBUG1,
3718 			    "Put FREE INOT lun %d\n", lun);
3719 			STAILQ_INSERT_TAIL(&trtp->inots, &ccb->ccb_h,
3720 			    sim_links.stqe);
3721 		} else {
3722 			mpt_lprt(mpt, MPT_PRT_ALWAYS, "Got Notify ACK\n");
3723 		}
3724 		mpt_set_ccb_status(ccb, CAM_REQ_INPROG);
3725 		MPTLOCK_2_CAMLOCK(mpt);
3726 		return;
3727 	}
3728 	case XPT_CONT_TARGET_IO:
3729 		CAMLOCK_2_MPTLOCK(mpt);
3730 		mpt_target_start_io(mpt, ccb);
3731 		MPTLOCK_2_CAMLOCK(mpt);
3732 		return;
3733 
3734 	default:
3735 		ccb->ccb_h.status = CAM_REQ_INVALID;
3736 		break;
3737 	}
3738 	xpt_done(ccb);
3739 }
3740 
3741 static int
3742 mpt_get_spi_settings(struct mpt_softc *mpt, struct ccb_trans_settings *cts)
3743 {
3744 #ifdef	CAM_NEW_TRAN_CODE
3745 	struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
3746 	struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
3747 #endif
3748 	target_id_t tgt;
3749 	uint32_t dval, pval, oval;
3750 	int rv;
3751 
3752 	if (IS_CURRENT_SETTINGS(cts) == 0) {
3753 		tgt = cts->ccb_h.target_id;
3754 	} else if (xpt_path_sim(cts->ccb_h.path) == mpt->phydisk_sim) {
3755 		if (mpt_map_physdisk(mpt, (union ccb *)cts, &tgt)) {
3756 			return (-1);
3757 		}
3758 	} else {
3759 		tgt = cts->ccb_h.target_id;
3760 	}
3761 
3762 	/*
3763 	 * We aren't looking at Port Page 2 BIOS settings here-
3764 	 * sometimes these have been known to be bogus XXX.
3765 	 *
3766 	 * For user settings, we pick the max from port page 0
3767 	 *
3768 	 * For current settings we read the current settings out from
3769 	 * device page 0 for that target.
3770 	 */
3771 	if (IS_CURRENT_SETTINGS(cts)) {
3772 		CONFIG_PAGE_SCSI_DEVICE_0 tmp;
3773 		dval = 0;
3774 
3775 		CAMLOCK_2_MPTLOCK(mpt);
3776 		tmp = mpt->mpt_dev_page0[tgt];
3777 		rv = mpt_read_cur_cfg_page(mpt, tgt, &tmp.Header,
3778 		    sizeof(tmp), FALSE, 5000);
3779 		if (rv) {
3780 			MPTLOCK_2_CAMLOCK(mpt);
3781 			mpt_prt(mpt, "can't get tgt %d config page 0\n", tgt);
3782 			return (rv);
3783 		}
3784 		mpt2host_config_page_scsi_device_0(&tmp);
3785 
3786 		MPTLOCK_2_CAMLOCK(mpt);
3787 		mpt_lprt(mpt, MPT_PRT_DEBUG,
3788 		    "mpt_get_spi_settings[%d]: current NP %x Info %x\n",
3789 		    tgt,
3790 		    (unsigned)tmp.NegotiatedParameters,
3791 		    (unsigned)tmp.Information);
3792 		dval |= (tmp.NegotiatedParameters & MPI_SCSIDEVPAGE0_NP_WIDE) ?
3793 		    DP_WIDE : DP_NARROW;
3794 		dval |= (mpt->mpt_disc_enable & (1 << tgt)) ?
3795 		    DP_DISC_ENABLE : DP_DISC_DISABL;
3796 		dval |= (mpt->mpt_tag_enable & (1 << tgt)) ?
3797 		    DP_TQING_ENABLE : DP_TQING_DISABL;
3798 		oval = tmp.NegotiatedParameters;
3799 		oval &= MPI_SCSIDEVPAGE0_NP_NEG_SYNC_OFFSET_MASK;
3800 		oval >>= MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_OFFSET;
3801 		pval = tmp.NegotiatedParameters;
3802 		pval &= MPI_SCSIDEVPAGE0_NP_NEG_SYNC_PERIOD_MASK;
3803 		pval >>= MPI_SCSIDEVPAGE0_NP_SHIFT_SYNC_PERIOD;
3804 		mpt->mpt_dev_page0[tgt] = tmp;
3805 	} else {
3806 		dval = DP_WIDE|DP_DISC_ENABLE|DP_TQING_ENABLE|DP_SYNC;
3807 		oval = mpt->mpt_port_page0.Capabilities;
3808 		oval = MPI_SCSIPORTPAGE0_CAP_GET_MAX_SYNC_OFFSET(oval);
3809 		pval = mpt->mpt_port_page0.Capabilities;
3810 		pval = MPI_SCSIPORTPAGE0_CAP_GET_MIN_SYNC_PERIOD(pval);
3811 	}
3812 
3813 #ifndef	CAM_NEW_TRAN_CODE
3814 	cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
3815 	cts->valid = 0;
3816 	cts->sync_period = pval;
3817 	cts->sync_offset = oval;
3818 	cts->valid |= CCB_TRANS_SYNC_RATE_VALID;
3819 	cts->valid |= CCB_TRANS_SYNC_OFFSET_VALID;
3820 	cts->valid |= CCB_TRANS_BUS_WIDTH_VALID;
3821 	if (dval & DP_WIDE) {
3822 		cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
3823 	} else {
3824 		cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
3825 	}
3826 	if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
3827 		cts->valid |= CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;
3828 		if (dval & DP_DISC_ENABLE) {
3829 			cts->flags |= CCB_TRANS_DISC_ENB;
3830 		}
3831 		if (dval & DP_TQING_ENABLE) {
3832 			cts->flags |= CCB_TRANS_TAG_ENB;
3833 		}
3834 	}
3835 #else
3836 	spi->valid = 0;
3837 	scsi->valid = 0;
3838 	spi->flags = 0;
3839 	scsi->flags = 0;
3840 	spi->sync_offset = oval;
3841 	spi->sync_period = pval;
3842 	spi->valid |= CTS_SPI_VALID_SYNC_OFFSET;
3843 	spi->valid |= CTS_SPI_VALID_SYNC_RATE;
3844 	spi->valid |= CTS_SPI_VALID_BUS_WIDTH;
3845 	if (dval & DP_WIDE) {
3846 		spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
3847 	} else {
3848 		spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
3849 	}
3850 	if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
3851 		scsi->valid = CTS_SCSI_VALID_TQ;
3852 		if (dval & DP_TQING_ENABLE) {
3853 			scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
3854 		}
3855 		spi->valid |= CTS_SPI_VALID_DISC;
3856 		if (dval & DP_DISC_ENABLE) {
3857 			spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
3858 		}
3859 	}
3860 #endif
3861 	mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
3862 	    "mpt_get_spi_settings[%d]: %s flags 0x%x per 0x%x off=%d\n", tgt,
3863 	    IS_CURRENT_SETTINGS(cts)? "ACTIVE" : "NVRAM ", dval, pval, oval);
3864 	return (0);
3865 }
3866 
3867 static void
3868 mpt_setwidth(struct mpt_softc *mpt, int tgt, int onoff)
3869 {
3870 	PTR_CONFIG_PAGE_SCSI_DEVICE_1 ptr;
3871 
3872 	ptr = &mpt->mpt_dev_page1[tgt];
3873 	if (onoff) {
3874 		ptr->RequestedParameters |= MPI_SCSIDEVPAGE1_RP_WIDE;
3875 	} else {
3876 		ptr->RequestedParameters &= ~MPI_SCSIDEVPAGE1_RP_WIDE;
3877 	}
3878 }
3879 
3880 static void
3881 mpt_setsync(struct mpt_softc *mpt, int tgt, int period, int offset)
3882 {
3883 	PTR_CONFIG_PAGE_SCSI_DEVICE_1 ptr;
3884 
3885 	ptr = &mpt->mpt_dev_page1[tgt];
3886 	ptr->RequestedParameters &= ~MPI_SCSIDEVPAGE1_RP_MIN_SYNC_PERIOD_MASK;
3887 	ptr->RequestedParameters &= ~MPI_SCSIDEVPAGE1_RP_MAX_SYNC_OFFSET_MASK;
3888 	ptr->RequestedParameters &= ~MPI_SCSIDEVPAGE1_RP_DT;
3889 	ptr->RequestedParameters &= ~MPI_SCSIDEVPAGE1_RP_QAS;
3890 	ptr->RequestedParameters &= ~MPI_SCSIDEVPAGE1_RP_IU;
3891 	if (period == 0) {
3892 		return;
3893 	}
3894 	ptr->RequestedParameters |=
3895 	    period << MPI_SCSIDEVPAGE1_RP_SHIFT_MIN_SYNC_PERIOD;
3896 	ptr->RequestedParameters |=
3897 	    offset << MPI_SCSIDEVPAGE1_RP_SHIFT_MAX_SYNC_OFFSET;
3898 	if (period < 0xa) {
3899 		ptr->RequestedParameters |= MPI_SCSIDEVPAGE1_RP_DT;
3900 	}
3901 	if (period < 0x9) {
3902 		ptr->RequestedParameters |= MPI_SCSIDEVPAGE1_RP_QAS;
3903 		ptr->RequestedParameters |= MPI_SCSIDEVPAGE1_RP_IU;
3904 	}
3905 }
3906 
3907 static int
3908 mpt_update_spi_config(struct mpt_softc *mpt, int tgt)
3909 {
3910 	CONFIG_PAGE_SCSI_DEVICE_1 tmp;
3911 	int rv;
3912 
3913 	mpt_lprt(mpt, MPT_PRT_NEGOTIATION,
3914 	    "mpt_update_spi_config[%d].page1: Requested Params 0x%08x\n",
3915 	    tgt,
3916 	    (unsigned)mpt->mpt_dev_page1[tgt].RequestedParameters);
3917 	tmp = mpt->mpt_dev_page1[tgt];
3918 	host2mpt_config_page_scsi_device_1(&tmp);
3919 	rv = mpt_write_cur_cfg_page(mpt, tgt,
3920 	    &tmp.Header, sizeof(tmp), FALSE, 5000);
3921 	if (rv) {
3922 		mpt_prt(mpt, "mpt_update_spi_config: write cur page failed\n");
3923 		return (-1);
3924 	}
3925 	return (0);
3926 }
3927 
3928 static void
3929 mpt_calc_geometry(struct ccb_calc_geometry *ccg, int extended)
3930 {
3931 #if __FreeBSD_version >= 500000
3932 	cam_calc_geometry(ccg, extended);
3933 #else
3934 	uint32_t size_mb;
3935 	uint32_t secs_per_cylinder;
3936 
3937 	if (ccg->block_size == 0) {
3938 		ccg->ccb_h.status = CAM_REQ_INVALID;
3939 		return;
3940 	}
3941 	size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size);
3942 	if (size_mb > 1024 && extended) {
3943 		ccg->heads = 255;
3944 		ccg->secs_per_track = 63;
3945 	} else {
3946 		ccg->heads = 64;
3947 		ccg->secs_per_track = 32;
3948 	}
3949 	secs_per_cylinder = ccg->heads * ccg->secs_per_track;
3950 	ccg->cylinders = ccg->volume_size / secs_per_cylinder;
3951 	ccg->ccb_h.status = CAM_REQ_CMP;
3952 #endif
3953 }
3954 
3955 /****************************** Timeout Recovery ******************************/
3956 static int
3957 mpt_spawn_recovery_thread(struct mpt_softc *mpt)
3958 {
3959 	int error;
3960 
3961 	error = mpt_kthread_create(mpt_recovery_thread, mpt,
3962 	    &mpt->recovery_thread, /*flags*/0,
3963 	    /*altstack*/0, "mpt_recovery%d", mpt->unit);
3964 	return (error);
3965 }
3966 
3967 static void
3968 mpt_terminate_recovery_thread(struct mpt_softc *mpt)
3969 {
3970 	if (mpt->recovery_thread == NULL) {
3971 		return;
3972 	}
3973 	mpt->shutdwn_recovery = 1;
3974 	wakeup(mpt);
3975 	/*
3976 	 * Sleep on a slightly different location
3977 	 * for this interlock just for added safety.
3978 	 */
3979 	mpt_sleep(mpt, &mpt->recovery_thread, PUSER, "thtrm", 0);
3980 }
3981 
3982 static void
3983 mpt_recovery_thread(void *arg)
3984 {
3985 	struct mpt_softc *mpt;
3986 
3987 	mpt = (struct mpt_softc *)arg;
3988 	MPT_LOCK(mpt);
3989 	for (;;) {
3990 		if (TAILQ_EMPTY(&mpt->request_timeout_list) != 0) {
3991 			if (mpt->shutdwn_recovery == 0) {
3992 				mpt_sleep(mpt, mpt, PUSER, "idle", 0);
3993 			}
3994 		}
3995 		if (mpt->shutdwn_recovery != 0) {
3996 			break;
3997 		}
3998 		mpt_recover_commands(mpt);
3999 	}
4000 	mpt->recovery_thread = NULL;
4001 	wakeup(&mpt->recovery_thread);
4002 	MPT_UNLOCK(mpt);
4003 	mpt_kthread_exit(0);
4004 }
4005 
4006 static int
4007 mpt_scsi_send_tmf(struct mpt_softc *mpt, u_int type, u_int flags,
4008     u_int channel, u_int target, u_int lun, u_int abort_ctx, int sleep_ok)
4009 {
4010 	MSG_SCSI_TASK_MGMT *tmf_req;
4011 	int		    error;
4012 
4013 	/*
4014 	 * Wait for any current TMF request to complete.
4015 	 * We're only allowed to issue one TMF at a time.
4016 	 */
4017 	error = mpt_wait_req(mpt, mpt->tmf_req, REQ_STATE_FREE, REQ_STATE_FREE,
4018 	    sleep_ok, MPT_TMF_MAX_TIMEOUT);
4019 	if (error != 0) {
4020 		mpt_reset(mpt, TRUE);
4021 		return (ETIMEDOUT);
4022 	}
4023 
4024 	mpt_assign_serno(mpt, mpt->tmf_req);
4025 	mpt->tmf_req->state = REQ_STATE_ALLOCATED|REQ_STATE_QUEUED;
4026 
4027 	tmf_req = (MSG_SCSI_TASK_MGMT *)mpt->tmf_req->req_vbuf;
4028 	memset(tmf_req, 0, sizeof(*tmf_req));
4029 	tmf_req->TargetID = target;
4030 	tmf_req->Bus = channel;
4031 	tmf_req->Function = MPI_FUNCTION_SCSI_TASK_MGMT;
4032 	tmf_req->TaskType = type;
4033 	tmf_req->MsgFlags = flags;
4034 	tmf_req->MsgContext =
4035 	    htole32(mpt->tmf_req->index | scsi_tmf_handler_id);
4036 	if (lun > MPT_MAX_LUNS) {
4037 		tmf_req->LUN[0] = 0x40 | ((lun >> 8) & 0x3f);
4038 		tmf_req->LUN[1] = lun & 0xff;
4039 	} else {
4040 		tmf_req->LUN[1] = lun;
4041 	}
4042 	tmf_req->TaskMsgContext = abort_ctx;
4043 
4044 	mpt_lprt(mpt, MPT_PRT_DEBUG,
4045 	    "Issuing TMF %p:%u with MsgContext of 0x%x\n",
4046 	    mpt->tmf_req,
4047 	    (unsigned)mpt->tmf_req->serno,
4048 	    (unsigned)tmf_req->MsgContext);
4049 	if (mpt->verbose > MPT_PRT_DEBUG) {
4050 		mpt_print_request(tmf_req);
4051 	}
4052 
4053 	KASSERT(mpt_req_on_pending_list(mpt, mpt->tmf_req) == 0,
4054 	    ("mpt_scsi_send_tmf: tmf_req already on pending list"));
4055 	TAILQ_INSERT_HEAD(&mpt->request_pending_list, mpt->tmf_req, links);
4056 	error = mpt_send_handshake_cmd(mpt, sizeof(*tmf_req), tmf_req);
4057 	if (error != MPT_OK) {
4058 		TAILQ_REMOVE(&mpt->request_pending_list, mpt->tmf_req, links);
4059 		mpt->tmf_req->state = REQ_STATE_FREE;
4060 		mpt_reset(mpt, TRUE);
4061 	}
4062 	return (error);
4063 }
4064 
4065 /*
4066  * When a command times out, it is placed on the requeust_timeout_list
4067  * and we wake our recovery thread.  The MPT-Fusion architecture supports
4068  * only a single TMF operation at a time, so we serially abort/bdr, etc,
4069  * the timedout transactions.  The next TMF is issued either by the
4070  * completion handler of the current TMF waking our recovery thread,
4071  * or the TMF timeout handler causing a hard reset sequence.
4072  */
4073 static void
4074 mpt_recover_commands(struct mpt_softc *mpt)
4075 {
4076 	request_t	   *req;
4077 	union ccb	   *ccb;
4078 	int		    error;
4079 
4080 	if (TAILQ_EMPTY(&mpt->request_timeout_list) != 0) {
4081 		/*
4082 		 * No work to do- leave.
4083 		 */
4084 		mpt_prt(mpt, "mpt_recover_commands: no requests.\n");
4085 		return;
4086 	}
4087 
4088 	/*
4089 	 * Flush any commands whose completion coincides with their timeout.
4090 	 */
4091 	mpt_intr(mpt);
4092 
4093 	if (TAILQ_EMPTY(&mpt->request_timeout_list) != 0) {
4094 		/*
4095 		 * The timedout commands have already
4096 		 * completed.  This typically means
4097 		 * that either the timeout value was on
4098 		 * the hairy edge of what the device
4099 		 * requires or - more likely - interrupts
4100 		 * are not happening.
4101 		 */
4102 		mpt_prt(mpt, "Timedout requests already complete. "
4103 		    "Interrupts may not be functioning.\n");
4104 		mpt_enable_ints(mpt);
4105 		return;
4106 	}
4107 
4108 	/*
4109 	 * We have no visibility into the current state of the
4110 	 * controller, so attempt to abort the commands in the
4111 	 * order they timed-out. For initiator commands, we
4112 	 * depend on the reply handler pulling requests off
4113 	 * the timeout list.
4114 	 */
4115 	while ((req = TAILQ_FIRST(&mpt->request_timeout_list)) != NULL) {
4116 		uint16_t status;
4117 		uint8_t response;
4118 		MSG_REQUEST_HEADER *hdrp = req->req_vbuf;
4119 
4120 		mpt_prt(mpt, "attempting to abort req %p:%u function %x\n",
4121 		    req, req->serno, hdrp->Function);
4122 		ccb = req->ccb;
4123 		if (ccb == NULL) {
4124 			mpt_prt(mpt, "null ccb in timed out request. "
4125 			    "Resetting Controller.\n");
4126 			mpt_reset(mpt, TRUE);
4127 			continue;
4128 		}
4129 		mpt_set_ccb_status(ccb, CAM_CMD_TIMEOUT);
4130 
4131 		/*
4132 		 * Check to see if this is not an initiator command and
4133 		 * deal with it differently if it is.
4134 		 */
4135 		switch (hdrp->Function) {
4136 		case MPI_FUNCTION_SCSI_IO_REQUEST:
4137 		case MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
4138 			break;
4139 		default:
4140 			/*
4141 			 * XXX: FIX ME: need to abort target assists...
4142 			 */
4143 			mpt_prt(mpt, "just putting it back on the pend q\n");
4144 			TAILQ_REMOVE(&mpt->request_timeout_list, req, links);
4145 			TAILQ_INSERT_HEAD(&mpt->request_pending_list, req,
4146 			    links);
4147 			continue;
4148 		}
4149 
4150 		error = mpt_scsi_send_tmf(mpt,
4151 		    MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4152 		    0, 0, ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
4153 		    htole32(req->index | scsi_io_handler_id), TRUE);
4154 
4155 		if (error != 0) {
4156 			/*
4157 			 * mpt_scsi_send_tmf hard resets on failure, so no
4158 			 * need to do so here.  Our queue should be emptied
4159 			 * by the hard reset.
4160 			 */
4161 			continue;
4162 		}
4163 
4164 		error = mpt_wait_req(mpt, mpt->tmf_req, REQ_STATE_DONE,
4165 		    REQ_STATE_DONE, TRUE, 500);
4166 
4167 		status = le16toh(mpt->tmf_req->IOCStatus);
4168 		response = mpt->tmf_req->ResponseCode;
4169 		mpt->tmf_req->state = REQ_STATE_FREE;
4170 
4171 		if (error != 0) {
4172 			/*
4173 			 * If we've errored out,, reset the controller.
4174 			 */
4175 			mpt_prt(mpt, "mpt_recover_commands: abort timed-out. "
4176 			    "Resetting controller\n");
4177 			mpt_reset(mpt, TRUE);
4178 			continue;
4179 		}
4180 
4181 		if ((status & MPI_IOCSTATUS_MASK) != MPI_IOCSTATUS_SUCCESS) {
4182 			mpt_prt(mpt, "mpt_recover_commands: IOC Status 0x%x. "
4183 			    "Resetting controller.\n", status);
4184 			mpt_reset(mpt, TRUE);
4185 			continue;
4186 		}
4187 
4188 		if (response != MPI_SCSITASKMGMT_RSP_TM_SUCCEEDED &&
4189 		    response != MPI_SCSITASKMGMT_RSP_TM_COMPLETE) {
4190 			mpt_prt(mpt, "mpt_recover_commands: TMF Response 0x%x. "
4191 			    "Resetting controller.\n", response);
4192 			mpt_reset(mpt, TRUE);
4193 			continue;
4194 		}
4195 		mpt_prt(mpt, "abort of req %p:%u completed\n", req, req->serno);
4196 	}
4197 }
4198 
4199 /************************ Target Mode Support ****************************/
4200 static void
4201 mpt_fc_post_els(struct mpt_softc *mpt, request_t *req, int ioindex)
4202 {
4203 	MSG_LINK_SERVICE_BUFFER_POST_REQUEST *fc;
4204 	PTR_SGE_TRANSACTION32 tep;
4205 	PTR_SGE_SIMPLE32 se;
4206 	bus_addr_t paddr;
4207 	uint32_t fl;
4208 
4209 	paddr = req->req_pbuf;
4210 	paddr += MPT_RQSL(mpt);
4211 
4212 	fc = req->req_vbuf;
4213 	memset(fc, 0, MPT_REQUEST_AREA);
4214 	fc->BufferCount = 1;
4215 	fc->Function = MPI_FUNCTION_FC_LINK_SRVC_BUF_POST;
4216 	fc->MsgContext = htole32(req->index | fc_els_handler_id);
4217 
4218 	/*
4219 	 * Okay, set up ELS buffer pointers. ELS buffer pointers
4220 	 * consist of a TE SGL element (with details length of zero)
4221 	 * followe by a SIMPLE SGL element which holds the address
4222 	 * of the buffer.
4223 	 */
4224 
4225 	tep = (PTR_SGE_TRANSACTION32) &fc->SGL;
4226 
4227 	tep->ContextSize = 4;
4228 	tep->Flags = 0;
4229 	tep->TransactionContext[0] = htole32(ioindex);
4230 
4231 	se = (PTR_SGE_SIMPLE32) &tep->TransactionDetails[0];
4232 	fl =
4233 		MPI_SGE_FLAGS_HOST_TO_IOC	|
4234 		MPI_SGE_FLAGS_SIMPLE_ELEMENT	|
4235 		MPI_SGE_FLAGS_LAST_ELEMENT	|
4236 		MPI_SGE_FLAGS_END_OF_LIST	|
4237 		MPI_SGE_FLAGS_END_OF_BUFFER;
4238 	fl <<= MPI_SGE_FLAGS_SHIFT;
4239 	fl |= (MPT_NRFM(mpt) - MPT_RQSL(mpt));
4240 	se->FlagsLength = htole32(fl);
4241 	se->Address = htole32((uint32_t) paddr);
4242 	mpt_lprt(mpt, MPT_PRT_DEBUG,
4243 	    "add ELS index %d ioindex %d for %p:%u\n",
4244 	    req->index, ioindex, req, req->serno);
4245 	KASSERT(((req->state & REQ_STATE_LOCKED) != 0),
4246 	    ("mpt_fc_post_els: request not locked"));
4247 	mpt_send_cmd(mpt, req);
4248 }
4249 
4250 static void
4251 mpt_post_target_command(struct mpt_softc *mpt, request_t *req, int ioindex)
4252 {
4253 	PTR_MSG_TARGET_CMD_BUFFER_POST_REQUEST fc;
4254 	PTR_CMD_BUFFER_DESCRIPTOR cb;
4255 	bus_addr_t paddr;
4256 
4257 	paddr = req->req_pbuf;
4258 	paddr += MPT_RQSL(mpt);
4259 	memset(req->req_vbuf, 0, MPT_REQUEST_AREA);
4260 	MPT_TGT_STATE(mpt, req)->state = TGT_STATE_LOADING;
4261 
4262 	fc = req->req_vbuf;
4263 	fc->BufferCount = 1;
4264 	fc->Function = MPI_FUNCTION_TARGET_CMD_BUFFER_POST;
4265 	fc->MsgContext = htole32(req->index | mpt->scsi_tgt_handler_id);
4266 
4267 	cb = &fc->Buffer[0];
4268 	cb->IoIndex = htole16(ioindex);
4269 	cb->u.PhysicalAddress32 = htole32((U32) paddr);
4270 
4271 	mpt_check_doorbell(mpt);
4272 	mpt_send_cmd(mpt, req);
4273 }
4274 
4275 static int
4276 mpt_add_els_buffers(struct mpt_softc *mpt)
4277 {
4278 	int i;
4279 
4280 	if (mpt->is_fc == 0) {
4281 		return (TRUE);
4282 	}
4283 
4284 	if (mpt->els_cmds_allocated) {
4285 		return (TRUE);
4286 	}
4287 
4288 	mpt->els_cmd_ptrs = kmalloc(MPT_MAX_ELS * sizeof (request_t *),
4289 	    M_DEVBUF, M_NOWAIT | M_ZERO);
4290 
4291 	if (mpt->els_cmd_ptrs == NULL) {
4292 		return (FALSE);
4293 	}
4294 
4295 	/*
4296 	 * Feed the chip some ELS buffer resources
4297 	 */
4298 	for (i = 0; i < MPT_MAX_ELS; i++) {
4299 		request_t *req = mpt_get_request(mpt, FALSE);
4300 		if (req == NULL) {
4301 			break;
4302 		}
4303 		req->state |= REQ_STATE_LOCKED;
4304 		mpt->els_cmd_ptrs[i] = req;
4305 		mpt_fc_post_els(mpt, req, i);
4306 	}
4307 
4308 	if (i == 0) {
4309 		mpt_prt(mpt, "unable to add ELS buffer resources\n");
4310 		kfree(mpt->els_cmd_ptrs, M_DEVBUF);
4311 		mpt->els_cmd_ptrs = NULL;
4312 		return (FALSE);
4313 	}
4314 	if (i != MPT_MAX_ELS) {
4315 		mpt_lprt(mpt, MPT_PRT_INFO,
4316 		    "only added %d of %d  ELS buffers\n", i, MPT_MAX_ELS);
4317 	}
4318 	mpt->els_cmds_allocated = i;
4319 	return(TRUE);
4320 }
4321 
4322 static int
4323 mpt_add_target_commands(struct mpt_softc *mpt)
4324 {
4325 	int i, max;
4326 
4327 	if (mpt->tgt_cmd_ptrs) {
4328 		return (TRUE);
4329 	}
4330 
4331 	max = MPT_MAX_REQUESTS(mpt) >> 1;
4332 	if (max > mpt->mpt_max_tgtcmds) {
4333 		max = mpt->mpt_max_tgtcmds;
4334 	}
4335 	mpt->tgt_cmd_ptrs =
4336 	    kmalloc(max * sizeof (request_t *), M_DEVBUF, M_NOWAIT | M_ZERO);
4337 	if (mpt->tgt_cmd_ptrs == NULL) {
4338 		mpt_prt(mpt,
4339 		    "mpt_add_target_commands: could not allocate cmd ptrs\n");
4340 		return (FALSE);
4341 	}
4342 
4343 	for (i = 0; i < max; i++) {
4344 		request_t *req;
4345 
4346 		req = mpt_get_request(mpt, FALSE);
4347 		if (req == NULL) {
4348 			break;
4349 		}
4350 		req->state |= REQ_STATE_LOCKED;
4351 		mpt->tgt_cmd_ptrs[i] = req;
4352 		mpt_post_target_command(mpt, req, i);
4353 	}
4354 
4355 
4356 	if (i == 0) {
4357 		mpt_lprt(mpt, MPT_PRT_ERROR, "could not add any target bufs\n");
4358 		kfree(mpt->tgt_cmd_ptrs, M_DEVBUF);
4359 		mpt->tgt_cmd_ptrs = NULL;
4360 		return (FALSE);
4361 	}
4362 
4363 	mpt->tgt_cmds_allocated = i;
4364 
4365 	if (i < max) {
4366 		mpt_lprt(mpt, MPT_PRT_INFO,
4367 		    "added %d of %d target bufs\n", i, max);
4368 	}
4369 	return (i);
4370 }
4371 
4372 static int
4373 mpt_enable_lun(struct mpt_softc *mpt, target_id_t tgt, lun_id_t lun)
4374 {
4375 	if (tgt == CAM_TARGET_WILDCARD && lun == CAM_LUN_WILDCARD) {
4376 		mpt->twildcard = 1;
4377 	} else if (lun >= MPT_MAX_LUNS) {
4378 		return (EINVAL);
4379 	} else if (tgt != CAM_TARGET_WILDCARD && tgt != 0) {
4380 		return (EINVAL);
4381 	}
4382 	if (mpt->tenabled == 0) {
4383 		if (mpt->is_fc) {
4384 			(void) mpt_fc_reset_link(mpt, 0);
4385 		}
4386 		mpt->tenabled = 1;
4387 	}
4388 	if (lun == CAM_LUN_WILDCARD) {
4389 		mpt->trt_wildcard.enabled = 1;
4390 	} else {
4391 		mpt->trt[lun].enabled = 1;
4392 	}
4393 	return (0);
4394 }
4395 
4396 static int
4397 mpt_disable_lun(struct mpt_softc *mpt, target_id_t tgt, lun_id_t lun)
4398 {
4399 	int i;
4400 	if (tgt == CAM_TARGET_WILDCARD && lun == CAM_LUN_WILDCARD) {
4401 		mpt->twildcard = 0;
4402 	} else if (lun >= MPT_MAX_LUNS) {
4403 		return (EINVAL);
4404 	} else if (tgt != CAM_TARGET_WILDCARD && tgt != 0) {
4405 		return (EINVAL);
4406 	}
4407 	if (lun == CAM_LUN_WILDCARD) {
4408 		mpt->trt_wildcard.enabled = 0;
4409 	} else {
4410 		mpt->trt[lun].enabled = 0;
4411 	}
4412 	for (i = 0; i < MPT_MAX_LUNS; i++) {
4413 		if (mpt->trt[lun].enabled) {
4414 			break;
4415 		}
4416 	}
4417 	if (i == MPT_MAX_LUNS && mpt->twildcard == 0) {
4418 		if (mpt->is_fc) {
4419 			(void) mpt_fc_reset_link(mpt, 0);
4420 		}
4421 		mpt->tenabled = 0;
4422 	}
4423 	return (0);
4424 }
4425 
4426 /*
4427  * Called with MPT lock held
4428  */
4429 static void
4430 mpt_target_start_io(struct mpt_softc *mpt, union ccb *ccb)
4431 {
4432 	struct ccb_scsiio *csio = &ccb->csio;
4433 	request_t *cmd_req = MPT_TAG_2_REQ(mpt, csio->tag_id);
4434 	mpt_tgt_state_t *tgt = MPT_TGT_STATE(mpt, cmd_req);
4435 
4436 	switch (tgt->state) {
4437 	case TGT_STATE_IN_CAM:
4438 		break;
4439 	case TGT_STATE_MOVING_DATA:
4440 		mpt_set_ccb_status(ccb, CAM_REQUEUE_REQ);
4441 		xpt_freeze_simq(mpt->sim, 1);
4442 		ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
4443 		tgt->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
4444 		MPTLOCK_2_CAMLOCK(mpt);
4445 		xpt_done(ccb);
4446 		CAMLOCK_2_MPTLOCK(mpt);
4447 		return;
4448 	default:
4449 		mpt_prt(mpt, "ccb %p flags 0x%x tag 0x%08x had bad request "
4450 		    "starting I/O\n", ccb, csio->ccb_h.flags, csio->tag_id);
4451 		mpt_tgt_dump_req_state(mpt, cmd_req);
4452 		mpt_set_ccb_status(ccb, CAM_REQ_CMP_ERR);
4453 		MPTLOCK_2_CAMLOCK(mpt);
4454 		xpt_done(ccb);
4455 		CAMLOCK_2_MPTLOCK(mpt);
4456 		return;
4457 	}
4458 
4459 	if (csio->dxfer_len) {
4460 		bus_dmamap_callback_t *cb;
4461 		PTR_MSG_TARGET_ASSIST_REQUEST ta;
4462 		request_t *req;
4463 
4464 		KASSERT((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE,
4465 		    ("dxfer_len %u but direction is NONE\n", csio->dxfer_len));
4466 
4467 		if ((req = mpt_get_request(mpt, FALSE)) == NULL) {
4468 			if (mpt->outofbeer == 0) {
4469 				mpt->outofbeer = 1;
4470 				xpt_freeze_simq(mpt->sim, 1);
4471 				mpt_lprt(mpt, MPT_PRT_DEBUG, "FREEZEQ\n");
4472 			}
4473 			ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
4474 			mpt_set_ccb_status(ccb, CAM_REQUEUE_REQ);
4475 			MPTLOCK_2_CAMLOCK(mpt);
4476 			xpt_done(ccb);
4477 			CAMLOCK_2_MPTLOCK(mpt);
4478 			return;
4479 		}
4480 		ccb->ccb_h.status = CAM_SIM_QUEUED | CAM_REQ_INPROG;
4481 		if (sizeof (bus_addr_t) > 4) {
4482 			cb = mpt_execute_req_a64;
4483 		} else {
4484 			cb = mpt_execute_req;
4485 		}
4486 
4487 		req->ccb = ccb;
4488 		ccb->ccb_h.ccb_req_ptr = req;
4489 
4490 		/*
4491 		 * Record the currently active ccb and the
4492 		 * request for it in our target state area.
4493 		 */
4494 		tgt->ccb = ccb;
4495 		tgt->req = req;
4496 
4497 		memset(req->req_vbuf, 0, MPT_RQSL(mpt));
4498 		ta = req->req_vbuf;
4499 
4500 		if (mpt->is_sas) {
4501 			PTR_MPI_TARGET_SSP_CMD_BUFFER ssp =
4502 			     cmd_req->req_vbuf;
4503 			ta->QueueTag = ssp->InitiatorTag;
4504 		} else if (mpt->is_spi) {
4505 			PTR_MPI_TARGET_SCSI_SPI_CMD_BUFFER sp =
4506 			     cmd_req->req_vbuf;
4507 			ta->QueueTag = sp->Tag;
4508 		}
4509 		ta->Function = MPI_FUNCTION_TARGET_ASSIST;
4510 		ta->MsgContext = htole32(req->index | mpt->scsi_tgt_handler_id);
4511 		ta->ReplyWord = htole32(tgt->reply_desc);
4512 		if (csio->ccb_h.target_lun > MPT_MAX_LUNS) {
4513 			ta->LUN[0] =
4514 			    0x40 | ((csio->ccb_h.target_lun >> 8) & 0x3f);
4515 			ta->LUN[1] = csio->ccb_h.target_lun & 0xff;
4516 		} else {
4517 			ta->LUN[1] = csio->ccb_h.target_lun;
4518 		}
4519 
4520 		ta->RelativeOffset = tgt->bytes_xfered;
4521 		ta->DataLength = ccb->csio.dxfer_len;
4522 		if (ta->DataLength > tgt->resid) {
4523 			ta->DataLength = tgt->resid;
4524 		}
4525 
4526 		/*
4527 		 * XXX Should be done after data transfer completes?
4528 		 */
4529 		tgt->resid -= csio->dxfer_len;
4530 		tgt->bytes_xfered += csio->dxfer_len;
4531 
4532 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
4533 			ta->TargetAssistFlags |=
4534 			    TARGET_ASSIST_FLAGS_DATA_DIRECTION;
4535 		}
4536 
4537 #ifdef	WE_TRUST_AUTO_GOOD_STATUS
4538 		if ((ccb->ccb_h.flags & CAM_SEND_STATUS) &&
4539 		    csio->scsi_status == SCSI_STATUS_OK && tgt->resid == 0) {
4540 			ta->TargetAssistFlags |=
4541 			    TARGET_ASSIST_FLAGS_AUTO_STATUS;
4542 		}
4543 #endif
4544 		tgt->state = TGT_STATE_SETTING_UP_FOR_DATA;
4545 
4546 		mpt_lprt(mpt, MPT_PRT_DEBUG,
4547 		    "DATA_CCB %p tag %x %u bytes %u resid flg %x req %p:%u "
4548 		    "nxtstate=%d\n", csio, csio->tag_id, csio->dxfer_len,
4549 		    tgt->resid, ccb->ccb_h.flags, req, req->serno, tgt->state);
4550 
4551 		MPTLOCK_2_CAMLOCK(mpt);
4552 		if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) {
4553 			if ((ccb->ccb_h.flags & CAM_DATA_PHYS) == 0) {
4554 				int error;
4555 				error = bus_dmamap_load(mpt->buffer_dmat,
4556 				    req->dmap, csio->data_ptr, csio->dxfer_len,
4557 				    cb, req, 0);
4558 				if (error == EINPROGRESS) {
4559 					xpt_freeze_simq(mpt->sim, 1);
4560 					ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
4561 				}
4562 			} else {
4563 				/*
4564 				 * We have been given a pointer to single
4565 				 * physical buffer.
4566 				 */
4567 				struct bus_dma_segment seg;
4568 				seg.ds_addr = (bus_addr_t)
4569 				    (vm_offset_t)csio->data_ptr;
4570 				seg.ds_len = csio->dxfer_len;
4571 				(*cb)(req, &seg, 1, 0);
4572 			}
4573 		} else {
4574 			/*
4575 			 * We have been given a list of addresses.
4576 			 * This case could be easily supported but they are not
4577 			 * currently generated by the CAM subsystem so there
4578 			 * is no point in wasting the time right now.
4579 			 */
4580 			struct bus_dma_segment *sgs;
4581 			if ((ccb->ccb_h.flags & CAM_SG_LIST_PHYS) == 0) {
4582 				(*cb)(req, NULL, 0, EFAULT);
4583 			} else {
4584 				/* Just use the segments provided */
4585 				sgs = (struct bus_dma_segment *)csio->data_ptr;
4586 				(*cb)(req, sgs, csio->sglist_cnt, 0);
4587 			}
4588 		}
4589 		CAMLOCK_2_MPTLOCK(mpt);
4590 	} else {
4591 		uint8_t *sp = NULL, sense[MPT_SENSE_SIZE];
4592 
4593 		/*
4594 		 * XXX: I don't know why this seems to happen, but
4595 		 * XXX: completing the CCB seems to make things happy.
4596 		 * XXX: This seems to happen if the initiator requests
4597 		 * XXX: enough data that we have to do multiple CTIOs.
4598 		 */
4599 		if ((ccb->ccb_h.flags & CAM_SEND_STATUS) == 0) {
4600 			mpt_lprt(mpt, MPT_PRT_DEBUG,
4601 			    "Meaningless STATUS CCB (%p): flags %x status %x "
4602 			    "resid %d bytes_xfered %u\n", ccb, ccb->ccb_h.flags,
4603 			    ccb->ccb_h.status, tgt->resid, tgt->bytes_xfered);
4604 			mpt_set_ccb_status(ccb, CAM_REQ_CMP);
4605 			ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
4606 			MPTLOCK_2_CAMLOCK(mpt);
4607 			xpt_done(ccb);
4608 			CAMLOCK_2_MPTLOCK(mpt);
4609 			return;
4610 		}
4611 		if (ccb->ccb_h.flags & CAM_SEND_SENSE) {
4612 			sp = sense;
4613 			memcpy(sp, &csio->sense_data,
4614 			   min(csio->sense_len, MPT_SENSE_SIZE));
4615 		}
4616 		mpt_scsi_tgt_status(mpt, ccb, cmd_req, csio->scsi_status, sp);
4617 	}
4618 }
4619 
4620 static void
4621 mpt_scsi_tgt_local(struct mpt_softc *mpt, request_t *cmd_req,
4622     uint32_t lun, int send, uint8_t *data, size_t length)
4623 {
4624 	mpt_tgt_state_t *tgt;
4625 	PTR_MSG_TARGET_ASSIST_REQUEST ta;
4626 	SGE_SIMPLE32 *se;
4627 	uint32_t flags;
4628 	uint8_t *dptr;
4629 	bus_addr_t pptr;
4630 	request_t *req;
4631 
4632 	/*
4633 	 * We enter with resid set to the data load for the command.
4634 	 */
4635 	tgt = MPT_TGT_STATE(mpt, cmd_req);
4636 	if (length == 0 || tgt->resid == 0) {
4637 		tgt->resid = 0;
4638 		mpt_scsi_tgt_status(mpt, NULL, cmd_req, 0, NULL);
4639 		return;
4640 	}
4641 
4642 	if ((req = mpt_get_request(mpt, FALSE)) == NULL) {
4643 		mpt_prt(mpt, "out of resources- dropping local response\n");
4644 		return;
4645 	}
4646 	tgt->is_local = 1;
4647 
4648 
4649 	memset(req->req_vbuf, 0, MPT_RQSL(mpt));
4650 	ta = req->req_vbuf;
4651 
4652 	if (mpt->is_sas) {
4653 		PTR_MPI_TARGET_SSP_CMD_BUFFER ssp = cmd_req->req_vbuf;
4654 		ta->QueueTag = ssp->InitiatorTag;
4655 	} else if (mpt->is_spi) {
4656 		PTR_MPI_TARGET_SCSI_SPI_CMD_BUFFER sp = cmd_req->req_vbuf;
4657 		ta->QueueTag = sp->Tag;
4658 	}
4659 	ta->Function = MPI_FUNCTION_TARGET_ASSIST;
4660 	ta->MsgContext = htole32(req->index | mpt->scsi_tgt_handler_id);
4661 	ta->ReplyWord = htole32(tgt->reply_desc);
4662 	if (lun > MPT_MAX_LUNS) {
4663 		ta->LUN[0] = 0x40 | ((lun >> 8) & 0x3f);
4664 		ta->LUN[1] = lun & 0xff;
4665 	} else {
4666 		ta->LUN[1] = lun;
4667 	}
4668 	ta->RelativeOffset = 0;
4669 	ta->DataLength = length;
4670 
4671 	dptr = req->req_vbuf;
4672 	dptr += MPT_RQSL(mpt);
4673 	pptr = req->req_pbuf;
4674 	pptr += MPT_RQSL(mpt);
4675 	memcpy(dptr, data, min(length, MPT_RQSL(mpt)));
4676 
4677 	se = (SGE_SIMPLE32 *) &ta->SGL[0];
4678 	memset(se, 0,sizeof (*se));
4679 
4680 	flags = MPI_SGE_FLAGS_SIMPLE_ELEMENT;
4681 	if (send) {
4682 		ta->TargetAssistFlags |= TARGET_ASSIST_FLAGS_DATA_DIRECTION;
4683 		flags |= MPI_SGE_FLAGS_HOST_TO_IOC;
4684 	}
4685 	se->Address = pptr;
4686 	MPI_pSGE_SET_LENGTH(se, length);
4687 	flags |= MPI_SGE_FLAGS_LAST_ELEMENT;
4688 	flags |= MPI_SGE_FLAGS_END_OF_LIST | MPI_SGE_FLAGS_END_OF_BUFFER;
4689 	MPI_pSGE_SET_FLAGS(se, flags);
4690 
4691 	tgt->ccb = NULL;
4692 	tgt->req = req;
4693 	tgt->resid -= length;
4694 	tgt->bytes_xfered = length;
4695 #ifdef	WE_TRUST_AUTO_GOOD_STATUS
4696 	tgt->state = TGT_STATE_MOVING_DATA_AND_STATUS;
4697 #else
4698 	tgt->state = TGT_STATE_MOVING_DATA;
4699 #endif
4700 	mpt_send_cmd(mpt, req);
4701 }
4702 
4703 /*
4704  * Abort queued up CCBs
4705  */
4706 static cam_status
4707 mpt_abort_target_ccb(struct mpt_softc *mpt, union ccb *ccb)
4708 {
4709 	struct mpt_hdr_stailq *lp;
4710 	struct ccb_hdr *srch;
4711 	int found = 0;
4712 	union ccb *accb = ccb->cab.abort_ccb;
4713 	tgt_resource_t *trtp;
4714 
4715 	mpt_lprt(mpt, MPT_PRT_DEBUG, "aborting ccb %p\n", accb);
4716 
4717 	if (ccb->ccb_h.target_lun == CAM_LUN_WILDCARD) {
4718 		trtp = &mpt->trt_wildcard;
4719 	} else {
4720 		trtp = &mpt->trt[ccb->ccb_h.target_lun];
4721 	}
4722 
4723 	if (accb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
4724 		lp = &trtp->atios;
4725 	} else if (accb->ccb_h.func_code == XPT_IMMED_NOTIFY) {
4726 		lp = &trtp->inots;
4727 	} else {
4728 		return (CAM_REQ_INVALID);
4729 	}
4730 
4731 	STAILQ_FOREACH(srch, lp, sim_links.stqe) {
4732 		if (srch == &accb->ccb_h) {
4733 			found = 1;
4734 			STAILQ_REMOVE(lp, srch, ccb_hdr, sim_links.stqe);
4735 			break;
4736 		}
4737 	}
4738 	if (found) {
4739 		accb->ccb_h.status = CAM_REQ_ABORTED;
4740 		xpt_done(accb);
4741 		return (CAM_REQ_CMP);
4742 	}
4743 	mpt_prt(mpt, "mpt_abort_tgt_ccb: CCB %p not found\n", ccb);
4744 	return (CAM_PATH_INVALID);
4745 }
4746 
4747 /*
4748  * Ask the MPT to abort the current target command
4749  */
4750 static int
4751 mpt_abort_target_cmd(struct mpt_softc *mpt, request_t *cmd_req)
4752 {
4753 	int error;
4754 	request_t *req;
4755 	PTR_MSG_TARGET_MODE_ABORT abtp;
4756 
4757 	req = mpt_get_request(mpt, FALSE);
4758 	if (req == NULL) {
4759 		return (-1);
4760 	}
4761 	abtp = req->req_vbuf;
4762 	memset(abtp, 0, sizeof (*abtp));
4763 
4764 	abtp->MsgContext = htole32(req->index | mpt->scsi_tgt_handler_id);
4765 	abtp->AbortType = TARGET_MODE_ABORT_TYPE_EXACT_IO;
4766 	abtp->Function = MPI_FUNCTION_TARGET_MODE_ABORT;
4767 	abtp->ReplyWord = htole32(MPT_TGT_STATE(mpt, cmd_req)->reply_desc);
4768 	error = 0;
4769 	if (mpt->is_fc || mpt->is_sas) {
4770 		mpt_send_cmd(mpt, req);
4771 	} else {
4772 		error = mpt_send_handshake_cmd(mpt, sizeof(*req), req);
4773 	}
4774 	return (error);
4775 }
4776 
4777 /*
4778  * WE_TRUST_AUTO_GOOD_STATUS- I've found that setting
4779  * TARGET_STATUS_SEND_FLAGS_AUTO_GOOD_STATUS leads the
4780  * FC929 to set bogus FC_RSP fields (nonzero residuals
4781  * but w/o RESID fields set). This causes QLogic initiators
4782  * to think maybe that a frame was lost.
4783  *
4784  * WE_CAN_USE_AUTO_REPOST- we can't use AUTO_REPOST because
4785  * we use allocated requests to do TARGET_ASSIST and we
4786  * need to know when to release them.
4787  */
4788 
4789 static void
4790 mpt_scsi_tgt_status(struct mpt_softc *mpt, union ccb *ccb, request_t *cmd_req,
4791     uint8_t status, uint8_t const *sense_data)
4792 {
4793 	uint8_t *cmd_vbuf;
4794 	mpt_tgt_state_t *tgt;
4795 	PTR_MSG_TARGET_STATUS_SEND_REQUEST tp;
4796 	request_t *req;
4797 	bus_addr_t paddr;
4798 	int resplen = 0;
4799 	uint32_t fl;
4800 
4801 	cmd_vbuf = cmd_req->req_vbuf;
4802 	cmd_vbuf += MPT_RQSL(mpt);
4803 	tgt = MPT_TGT_STATE(mpt, cmd_req);
4804 
4805 	if ((req = mpt_get_request(mpt, FALSE)) == NULL) {
4806 		if (mpt->outofbeer == 0) {
4807 			mpt->outofbeer = 1;
4808 			xpt_freeze_simq(mpt->sim, 1);
4809 			mpt_lprt(mpt, MPT_PRT_DEBUG, "FREEZEQ\n");
4810 		}
4811 		if (ccb) {
4812 			ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
4813 			mpt_set_ccb_status(ccb, CAM_REQUEUE_REQ);
4814 			MPTLOCK_2_CAMLOCK(mpt);
4815 			xpt_done(ccb);
4816 			CAMLOCK_2_MPTLOCK(mpt);
4817 		} else {
4818 			mpt_prt(mpt,
4819 			    "could not allocate status request- dropping\n");
4820 		}
4821 		return;
4822 	}
4823 	req->ccb = ccb;
4824 	if (ccb) {
4825 		ccb->ccb_h.ccb_mpt_ptr = mpt;
4826 		ccb->ccb_h.ccb_req_ptr = req;
4827 	}
4828 
4829 	/*
4830 	 * Record the currently active ccb, if any, and the
4831 	 * request for it in our target state area.
4832 	 */
4833 	tgt->ccb = ccb;
4834 	tgt->req = req;
4835 	tgt->state = TGT_STATE_SENDING_STATUS;
4836 
4837 	tp = req->req_vbuf;
4838 	paddr = req->req_pbuf;
4839 	paddr += MPT_RQSL(mpt);
4840 
4841 	memset(tp, 0, sizeof (*tp));
4842 	tp->Function = MPI_FUNCTION_TARGET_STATUS_SEND;
4843 	if (mpt->is_fc) {
4844 		PTR_MPI_TARGET_FCP_CMD_BUFFER fc =
4845 		    (PTR_MPI_TARGET_FCP_CMD_BUFFER) cmd_vbuf;
4846 		uint8_t *sts_vbuf;
4847 		uint32_t *rsp;
4848 
4849 		sts_vbuf = req->req_vbuf;
4850 		sts_vbuf += MPT_RQSL(mpt);
4851 		rsp = (uint32_t *) sts_vbuf;
4852 		memcpy(tp->LUN, fc->FcpLun, sizeof (tp->LUN));
4853 
4854 		/*
4855 		 * The MPI_TARGET_FCP_RSP_BUFFER define is unfortunate.
4856 		 * It has to be big-endian in memory and is organized
4857 		 * in 32 bit words, which are much easier to deal with
4858 		 * as words which are swizzled as needed.
4859 		 *
4860 		 * All we're filling here is the FC_RSP payload.
4861 		 * We may just have the chip synthesize it if
4862 		 * we have no residual and an OK status.
4863 		 *
4864 		 */
4865 		memset(rsp, 0, sizeof (MPI_TARGET_FCP_RSP_BUFFER));
4866 
4867 		rsp[2] = status;
4868 		if (tgt->resid) {
4869 			rsp[2] |= 0x800;	/* XXXX NEED MNEMONIC!!!! */
4870 			rsp[3] = htobe32(tgt->resid);
4871 #ifdef	WE_TRUST_AUTO_GOOD_STATUS
4872 			resplen = sizeof (MPI_TARGET_FCP_RSP_BUFFER);
4873 #endif
4874 		}
4875 		if (status == SCSI_STATUS_CHECK_COND) {
4876 			int i;
4877 
4878 			rsp[2] |= 0x200;	/* XXXX NEED MNEMONIC!!!! */
4879 			rsp[4] = htobe32(MPT_SENSE_SIZE);
4880 			if (sense_data) {
4881 				memcpy(&rsp[8], sense_data, MPT_SENSE_SIZE);
4882 			} else {
4883 				mpt_prt(mpt, "mpt_scsi_tgt_status: CHECK CONDI"
4884 				    "TION but no sense data?\n");
4885 				memset(&rsp, 0, MPT_SENSE_SIZE);
4886 			}
4887 			for (i = 8; i < (8 + (MPT_SENSE_SIZE >> 2)); i++) {
4888 				rsp[i] = htobe32(rsp[i]);
4889 			}
4890 #ifdef	WE_TRUST_AUTO_GOOD_STATUS
4891 			resplen = sizeof (MPI_TARGET_FCP_RSP_BUFFER);
4892 #endif
4893 		}
4894 #ifndef	WE_TRUST_AUTO_GOOD_STATUS
4895 		resplen = sizeof (MPI_TARGET_FCP_RSP_BUFFER);
4896 #endif
4897 		rsp[2] = htobe32(rsp[2]);
4898 	} else if (mpt->is_sas) {
4899 		PTR_MPI_TARGET_SSP_CMD_BUFFER ssp =
4900 		    (PTR_MPI_TARGET_SSP_CMD_BUFFER) cmd_vbuf;
4901 		memcpy(tp->LUN, ssp->LogicalUnitNumber, sizeof (tp->LUN));
4902 	} else {
4903 		PTR_MPI_TARGET_SCSI_SPI_CMD_BUFFER sp =
4904 		    (PTR_MPI_TARGET_SCSI_SPI_CMD_BUFFER) cmd_vbuf;
4905 		tp->StatusCode = status;
4906 		tp->QueueTag = htole16(sp->Tag);
4907 		memcpy(tp->LUN, sp->LogicalUnitNumber, sizeof (tp->LUN));
4908 	}
4909 
4910 	tp->ReplyWord = htole32(tgt->reply_desc);
4911 	tp->MsgContext = htole32(req->index | mpt->scsi_tgt_handler_id);
4912 
4913 #ifdef	WE_CAN_USE_AUTO_REPOST
4914 	tp->MsgFlags = TARGET_STATUS_SEND_FLAGS_REPOST_CMD_BUFFER;
4915 #endif
4916 	if (status == SCSI_STATUS_OK && resplen == 0) {
4917 		tp->MsgFlags |= TARGET_STATUS_SEND_FLAGS_AUTO_GOOD_STATUS;
4918 	} else {
4919 		tp->StatusDataSGE.u.Address32 = htole32((uint32_t) paddr);
4920 		fl =
4921 			MPI_SGE_FLAGS_HOST_TO_IOC	|
4922 			MPI_SGE_FLAGS_SIMPLE_ELEMENT	|
4923 			MPI_SGE_FLAGS_LAST_ELEMENT	|
4924 			MPI_SGE_FLAGS_END_OF_LIST	|
4925 			MPI_SGE_FLAGS_END_OF_BUFFER;
4926 		fl <<= MPI_SGE_FLAGS_SHIFT;
4927 		fl |= resplen;
4928 		tp->StatusDataSGE.FlagsLength = htole32(fl);
4929 	}
4930 
4931 	mpt_lprt(mpt, MPT_PRT_DEBUG,
4932 	    "STATUS_CCB %p (wit%s sense) tag %x req %p:%u resid %u\n",
4933 	    ccb, sense_data?"h" : "hout", ccb? ccb->csio.tag_id : -1, req,
4934 	    req->serno, tgt->resid);
4935 	if (ccb) {
4936 		ccb->ccb_h.status = CAM_SIM_QUEUED | CAM_REQ_INPROG;
4937 		mpt_req_timeout(req, 60 * hz, mpt_timeout, ccb);
4938 	}
4939 	mpt_send_cmd(mpt, req);
4940 }
4941 
4942 static void
4943 mpt_scsi_tgt_tsk_mgmt(struct mpt_softc *mpt, request_t *req, mpt_task_mgmt_t fc,
4944     tgt_resource_t *trtp, int init_id)
4945 {
4946 	struct ccb_immed_notify *inot;
4947 	mpt_tgt_state_t *tgt;
4948 
4949 	tgt = MPT_TGT_STATE(mpt, req);
4950 	inot = (struct ccb_immed_notify *) STAILQ_FIRST(&trtp->inots);
4951 	if (inot == NULL) {
4952 		mpt_lprt(mpt, MPT_PRT_WARN, "no INOTSs- sending back BSY\n");
4953 		mpt_scsi_tgt_status(mpt, NULL, req, SCSI_STATUS_BUSY, NULL);
4954 		return;
4955 	}
4956 	STAILQ_REMOVE_HEAD(&trtp->inots, sim_links.stqe);
4957 	mpt_lprt(mpt, MPT_PRT_DEBUG1,
4958 	    "Get FREE INOT %p lun %d\n", inot, inot->ccb_h.target_lun);
4959 
4960 	memset(&inot->sense_data, 0, sizeof (inot->sense_data));
4961 	inot->sense_len = 0;
4962 	memset(inot->message_args, 0, sizeof (inot->message_args));
4963 	inot->initiator_id = init_id;	/* XXX */
4964 
4965 	/*
4966 	 * This is a somewhat grotesque attempt to map from task management
4967 	 * to old style SCSI messages. God help us all.
4968 	 */
4969 	switch (fc) {
4970 	case MPT_ABORT_TASK_SET:
4971 		inot->message_args[0] = MSG_ABORT_TAG;
4972 		break;
4973 	case MPT_CLEAR_TASK_SET:
4974 		inot->message_args[0] = MSG_CLEAR_TASK_SET;
4975 		break;
4976 	case MPT_TARGET_RESET:
4977 		inot->message_args[0] = MSG_TARGET_RESET;
4978 		break;
4979 	case MPT_CLEAR_ACA:
4980 		inot->message_args[0] = MSG_CLEAR_ACA;
4981 		break;
4982 	case MPT_TERMINATE_TASK:
4983 		inot->message_args[0] = MSG_ABORT_TAG;
4984 		break;
4985 	default:
4986 		inot->message_args[0] = MSG_NOOP;
4987 		break;
4988 	}
4989 	tgt->ccb = (union ccb *) inot;
4990 	inot->ccb_h.status = CAM_MESSAGE_RECV|CAM_DEV_QFRZN;
4991 	MPTLOCK_2_CAMLOCK(mpt);
4992 	xpt_done((union ccb *)inot);
4993 	CAMLOCK_2_MPTLOCK(mpt);
4994 }
4995 
4996 static void
4997 mpt_scsi_tgt_atio(struct mpt_softc *mpt, request_t *req, uint32_t reply_desc)
4998 {
4999 	static uint8_t null_iqd[SHORT_INQUIRY_LENGTH] = {
5000 	    0x7f, 0x00, 0x02, 0x02, 0x20, 0x00, 0x00, 0x32,
5001 	     'F',  'R',  'E',  'E',  'B',  'S',  'D',  ' ',
5002 	     'L',  'S',  'I',  '-',  'L',  'O',  'G',  'I',
5003 	     'C',  ' ',  'N',  'U',  'L',  'D',  'E',  'V',
5004 	     '0',  '0',  '0',  '1'
5005 	};
5006 	struct ccb_accept_tio *atiop;
5007 	lun_id_t lun;
5008 	int tag_action = 0;
5009 	mpt_tgt_state_t *tgt;
5010 	tgt_resource_t *trtp = NULL;
5011 	U8 *lunptr;
5012 	U8 *vbuf;
5013 	U16 itag;
5014 	U16 ioindex;
5015 	mpt_task_mgmt_t fct = MPT_NIL_TMT_VALUE;
5016 	uint8_t *cdbp;
5017 
5018 	/*
5019 	 * First, DMA sync the received command-
5020 	 * which is in the *request* * phys area.
5021 	 *
5022 	 * XXX: We could optimize this for a range
5023 	 */
5024 	bus_dmamap_sync(mpt->request_dmat, mpt->request_dmap,
5025 	    BUS_DMASYNC_POSTREAD);
5026 
5027 	/*
5028 	 * Stash info for the current command where we can get at it later.
5029 	 */
5030 	vbuf = req->req_vbuf;
5031 	vbuf += MPT_RQSL(mpt);
5032 
5033 	/*
5034 	 * Get our state pointer set up.
5035 	 */
5036 	tgt = MPT_TGT_STATE(mpt, req);
5037 	if (tgt->state != TGT_STATE_LOADED) {
5038 		mpt_tgt_dump_req_state(mpt, req);
5039 		panic("bad target state in mpt_scsi_tgt_atio");
5040 	}
5041 	memset(tgt, 0, sizeof (mpt_tgt_state_t));
5042 	tgt->state = TGT_STATE_IN_CAM;
5043 	tgt->reply_desc = reply_desc;
5044 	ioindex = GET_IO_INDEX(reply_desc);
5045 	if (mpt->verbose >= MPT_PRT_DEBUG) {
5046 		mpt_dump_data(mpt, "mpt_scsi_tgt_atio response", vbuf,
5047 		    max(sizeof (MPI_TARGET_FCP_CMD_BUFFER),
5048 		    max(sizeof (MPI_TARGET_SSP_CMD_BUFFER),
5049 		    sizeof (MPI_TARGET_SCSI_SPI_CMD_BUFFER))));
5050 	}
5051 	if (mpt->is_fc) {
5052 		PTR_MPI_TARGET_FCP_CMD_BUFFER fc;
5053 		fc = (PTR_MPI_TARGET_FCP_CMD_BUFFER) vbuf;
5054 		if (fc->FcpCntl[2]) {
5055 			/*
5056 			 * Task Management Request
5057 			 */
5058 			switch (fc->FcpCntl[2]) {
5059 			case 0x2:
5060 				fct = MPT_ABORT_TASK_SET;
5061 				break;
5062 			case 0x4:
5063 				fct = MPT_CLEAR_TASK_SET;
5064 				break;
5065 			case 0x20:
5066 				fct = MPT_TARGET_RESET;
5067 				break;
5068 			case 0x40:
5069 				fct = MPT_CLEAR_ACA;
5070 				break;
5071 			case 0x80:
5072 				fct = MPT_TERMINATE_TASK;
5073 				break;
5074 			default:
5075 				mpt_prt(mpt, "CORRUPTED TASK MGMT BITS: 0x%x\n",
5076 				    fc->FcpCntl[2]);
5077 				mpt_scsi_tgt_status(mpt, 0, req,
5078 				    SCSI_STATUS_OK, 0);
5079 				return;
5080 			}
5081 		} else {
5082 			switch (fc->FcpCntl[1]) {
5083 			case 0:
5084 				tag_action = MSG_SIMPLE_Q_TAG;
5085 				break;
5086 			case 1:
5087 				tag_action = MSG_HEAD_OF_Q_TAG;
5088 				break;
5089 			case 2:
5090 				tag_action = MSG_ORDERED_Q_TAG;
5091 				break;
5092 			default:
5093 				/*
5094 				 * Bah. Ignore Untagged Queing and ACA
5095 				 */
5096 				tag_action = MSG_SIMPLE_Q_TAG;
5097 				break;
5098 			}
5099 		}
5100 		tgt->resid = be32toh(fc->FcpDl);
5101 		cdbp = fc->FcpCdb;
5102 		lunptr = fc->FcpLun;
5103 		itag = be16toh(fc->OptionalOxid);
5104 	} else if (mpt->is_sas) {
5105 		PTR_MPI_TARGET_SSP_CMD_BUFFER ssp;
5106 		ssp = (PTR_MPI_TARGET_SSP_CMD_BUFFER) vbuf;
5107 		cdbp = ssp->CDB;
5108 		lunptr = ssp->LogicalUnitNumber;
5109 		itag = ssp->InitiatorTag;
5110 	} else {
5111 		PTR_MPI_TARGET_SCSI_SPI_CMD_BUFFER sp;
5112 		sp = (PTR_MPI_TARGET_SCSI_SPI_CMD_BUFFER) vbuf;
5113 		cdbp = sp->CDB;
5114 		lunptr = sp->LogicalUnitNumber;
5115 		itag = sp->Tag;
5116 	}
5117 
5118 	/*
5119 	 * Generate a simple lun
5120 	 */
5121 	switch (lunptr[0] & 0xc0) {
5122 	case 0x40:
5123 		lun = ((lunptr[0] & 0x3f) << 8) | lunptr[1];
5124 		break;
5125 	case 0:
5126 		lun = lunptr[1];
5127 		break;
5128 	default:
5129 		mpt_lprt(mpt, MPT_PRT_ERROR, "cannot handle this type lun\n");
5130 		lun = 0xffff;
5131 		break;
5132 	}
5133 
5134 	/*
5135 	 * Deal with non-enabled or bad luns here.
5136 	 */
5137 	if (lun >= MPT_MAX_LUNS || mpt->tenabled == 0 ||
5138 	    mpt->trt[lun].enabled == 0) {
5139 		if (mpt->twildcard) {
5140 			trtp = &mpt->trt_wildcard;
5141 		} else if (fct == MPT_NIL_TMT_VALUE) {
5142 			/*
5143 			 * In this case, we haven't got an upstream listener
5144 			 * for either a specific lun or wildcard luns. We
5145 			 * have to make some sensible response. For regular
5146 			 * inquiry, just return some NOT HERE inquiry data.
5147 			 * For VPD inquiry, report illegal field in cdb.
5148 			 * For REQUEST SENSE, just return NO SENSE data.
5149 			 * REPORT LUNS gets illegal command.
5150 			 * All other commands get 'no such device'.
5151 			 */
5152 			uint8_t *sp, cond, buf[MPT_SENSE_SIZE];
5153 			size_t len;
5154 
5155 			memset(buf, 0, MPT_SENSE_SIZE);
5156 			cond = SCSI_STATUS_CHECK_COND;
5157 			buf[0] = 0xf0;
5158 			buf[2] = 0x5;
5159 			buf[7] = 0x8;
5160 			sp = buf;
5161 			tgt->tag_id = MPT_MAKE_TAGID(mpt, req, ioindex);
5162 
5163 			switch (cdbp[0]) {
5164 			case INQUIRY:
5165 			{
5166 				if (cdbp[1] != 0) {
5167 					buf[12] = 0x26;
5168 					buf[13] = 0x01;
5169 					break;
5170 				}
5171 				len = min(tgt->resid, cdbp[4]);
5172 				len = min(len, sizeof (null_iqd));
5173 				mpt_lprt(mpt, MPT_PRT_DEBUG,
5174 				    "local inquiry %ld bytes\n", (long) len);
5175 				mpt_scsi_tgt_local(mpt, req, lun, 1,
5176 				    null_iqd, len);
5177 				return;
5178 			}
5179 			case REQUEST_SENSE:
5180 			{
5181 				buf[2] = 0x0;
5182 				len = min(tgt->resid, cdbp[4]);
5183 				len = min(len, sizeof (buf));
5184 				mpt_lprt(mpt, MPT_PRT_DEBUG,
5185 				    "local reqsense %ld bytes\n", (long) len);
5186 				mpt_scsi_tgt_local(mpt, req, lun, 1,
5187 				    buf, len);
5188 				return;
5189 			}
5190 			case REPORT_LUNS:
5191 				mpt_lprt(mpt, MPT_PRT_DEBUG, "REPORT LUNS\n");
5192 				buf[12] = 0x26;
5193 				return;
5194 			default:
5195 				mpt_lprt(mpt, MPT_PRT_DEBUG,
5196 				    "CMD 0x%x to unmanaged lun %u\n",
5197 				    cdbp[0], lun);
5198 				buf[12] = 0x25;
5199 				break;
5200 			}
5201 			mpt_scsi_tgt_status(mpt, NULL, req, cond, sp);
5202 			return;
5203 		}
5204 		/* otherwise, leave trtp NULL */
5205 	} else {
5206 		trtp = &mpt->trt[lun];
5207 	}
5208 
5209 	/*
5210 	 * Deal with any task management
5211 	 */
5212 	if (fct != MPT_NIL_TMT_VALUE) {
5213 		if (trtp == NULL) {
5214 			mpt_prt(mpt, "task mgmt function %x but no listener\n",
5215 			    fct);
5216 			mpt_scsi_tgt_status(mpt, 0, req,
5217 			    SCSI_STATUS_OK, 0);
5218 		} else {
5219 			mpt_scsi_tgt_tsk_mgmt(mpt, req, fct, trtp,
5220 			    GET_INITIATOR_INDEX(reply_desc));
5221 		}
5222 		return;
5223 	}
5224 
5225 
5226 	atiop = (struct ccb_accept_tio *) STAILQ_FIRST(&trtp->atios);
5227 	if (atiop == NULL) {
5228 		mpt_lprt(mpt, MPT_PRT_WARN,
5229 		    "no ATIOs for lun %u- sending back %s\n", lun,
5230 		    mpt->tenabled? "QUEUE FULL" : "BUSY");
5231 		mpt_scsi_tgt_status(mpt, NULL, req,
5232 		    mpt->tenabled? SCSI_STATUS_QUEUE_FULL : SCSI_STATUS_BUSY,
5233 		    NULL);
5234 		return;
5235 	}
5236 	STAILQ_REMOVE_HEAD(&trtp->atios, sim_links.stqe);
5237 	mpt_lprt(mpt, MPT_PRT_DEBUG1,
5238 	    "Get FREE ATIO %p lun %d\n", atiop, atiop->ccb_h.target_lun);
5239 	atiop->ccb_h.ccb_mpt_ptr = mpt;
5240 	atiop->ccb_h.status = CAM_CDB_RECVD;
5241 	atiop->ccb_h.target_lun = lun;
5242 	atiop->sense_len = 0;
5243 	atiop->init_id = GET_INITIATOR_INDEX(reply_desc);
5244 	atiop->cdb_len = mpt_cdblen(cdbp[0], 16);
5245 	memcpy(atiop->cdb_io.cdb_bytes, cdbp, atiop->cdb_len);
5246 
5247 	/*
5248 	 * The tag we construct here allows us to find the
5249 	 * original request that the command came in with.
5250 	 *
5251 	 * This way we don't have to depend on anything but the
5252 	 * tag to find things when CCBs show back up from CAM.
5253 	 */
5254 	atiop->tag_id = MPT_MAKE_TAGID(mpt, req, ioindex);
5255 	tgt->tag_id = atiop->tag_id;
5256 	if (tag_action) {
5257 		atiop->tag_action = tag_action;
5258 		atiop->ccb_h.flags = CAM_TAG_ACTION_VALID;
5259 	}
5260 	if (mpt->verbose >= MPT_PRT_DEBUG) {
5261 		int i;
5262 		mpt_prt(mpt, "START_CCB %p for lun %u CDB=<", atiop,
5263 		    atiop->ccb_h.target_lun);
5264 		for (i = 0; i < atiop->cdb_len; i++) {
5265 			mpt_prtc(mpt, "%02x%c", cdbp[i] & 0xff,
5266 			    (i == (atiop->cdb_len - 1))? '>' : ' ');
5267 		}
5268 		mpt_prtc(mpt, " itag %x tag %x rdesc %x dl=%u\n",
5269 			 itag, atiop->tag_id, tgt->reply_desc, tgt->resid);
5270 	}
5271 
5272 	MPTLOCK_2_CAMLOCK(mpt);
5273 	xpt_done((union ccb *)atiop);
5274 	CAMLOCK_2_MPTLOCK(mpt);
5275 }
5276 
5277 static void
5278 mpt_tgt_dump_tgt_state(struct mpt_softc *mpt, request_t *req)
5279 {
5280 	mpt_tgt_state_t *tgt = MPT_TGT_STATE(mpt, req);
5281 
5282 	mpt_prt(mpt, "req %p:%u tgt:rdesc 0x%x resid %u xfrd %u ccb %p treq %p "
5283 	    "nx %d tag 0x%08x state=%d\n", req, req->serno, tgt->reply_desc,
5284 	    tgt->resid, tgt->bytes_xfered, tgt->ccb, tgt->req, tgt->nxfers,
5285 	    tgt->tag_id, tgt->state);
5286 }
5287 
5288 static void
5289 mpt_tgt_dump_req_state(struct mpt_softc *mpt, request_t *req)
5290 {
5291 	mpt_prt(mpt, "req %p:%u index %u (%x) state %x\n", req, req->serno,
5292 	    req->index, req->index, req->state);
5293 	mpt_tgt_dump_tgt_state(mpt, req);
5294 }
5295 
5296 static int
5297 mpt_scsi_tgt_reply_handler(struct mpt_softc *mpt, request_t *req,
5298     uint32_t reply_desc, MSG_DEFAULT_REPLY *reply_frame)
5299 {
5300 	int dbg;
5301 	union ccb *ccb;
5302 	U16 status;
5303 
5304 	if (reply_frame == NULL) {
5305 		/*
5306 		 * Figure out what the state of the command is.
5307 		 */
5308 		mpt_tgt_state_t *tgt = MPT_TGT_STATE(mpt, req);
5309 
5310 #ifdef	INVARIANTS
5311 		mpt_req_spcl(mpt, req, "turbo scsi_tgt_reply", __LINE__);
5312 		if (tgt->req) {
5313 			mpt_req_not_spcl(mpt, tgt->req,
5314 			    "turbo scsi_tgt_reply associated req", __LINE__);
5315 		}
5316 #endif
5317 		switch(tgt->state) {
5318 		case TGT_STATE_LOADED:
5319 			/*
5320 			 * This is a new command starting.
5321 			 */
5322 			mpt_scsi_tgt_atio(mpt, req, reply_desc);
5323 			break;
5324 		case TGT_STATE_MOVING_DATA:
5325 		{
5326 			uint8_t *sp = NULL, sense[MPT_SENSE_SIZE];
5327 
5328 			ccb = tgt->ccb;
5329 			if (tgt->req == NULL) {
5330 				panic("mpt: turbo target reply with null "
5331 				    "associated request moving data");
5332 				/* NOTREACHED */
5333 			}
5334 			if (ccb == NULL) {
5335 				if (tgt->is_local == 0) {
5336 					panic("mpt: turbo target reply with "
5337 					    "null associated ccb moving data");
5338 					/* NOTREACHED */
5339 				}
5340 				mpt_lprt(mpt, MPT_PRT_DEBUG,
5341 				    "TARGET_ASSIST local done\n");
5342 				TAILQ_REMOVE(&mpt->request_pending_list,
5343 				    tgt->req, links);
5344 				mpt_free_request(mpt, tgt->req);
5345 				tgt->req = NULL;
5346 				mpt_scsi_tgt_status(mpt, NULL, req,
5347 				    0, NULL);
5348 				return (TRUE);
5349 			}
5350 			tgt->ccb = NULL;
5351 			tgt->nxfers++;
5352 			mpt_req_untimeout(req, mpt_timeout, ccb);
5353 			mpt_lprt(mpt, MPT_PRT_DEBUG,
5354 			    "TARGET_ASSIST %p (req %p:%u) done tag 0x%x\n",
5355 			    ccb, tgt->req, tgt->req->serno, ccb->csio.tag_id);
5356 			/*
5357 			 * Free the Target Assist Request
5358 			 */
5359 			KASSERT(tgt->req->ccb == ccb,
5360 			    ("tgt->req %p:%u tgt->req->ccb %p", tgt->req,
5361 			    tgt->req->serno, tgt->req->ccb));
5362 			TAILQ_REMOVE(&mpt->request_pending_list,
5363 			    tgt->req, links);
5364 			mpt_free_request(mpt, tgt->req);
5365 			tgt->req = NULL;
5366 
5367 			/*
5368 			 * Do we need to send status now? That is, are
5369 			 * we done with all our data transfers?
5370 			 */
5371 			if ((ccb->ccb_h.flags & CAM_SEND_STATUS) == 0) {
5372 				mpt_set_ccb_status(ccb, CAM_REQ_CMP);
5373 				ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
5374 				KASSERT(ccb->ccb_h.status,
5375 				    ("zero ccb sts at %d\n", __LINE__));
5376 				tgt->state = TGT_STATE_IN_CAM;
5377 				if (mpt->outofbeer) {
5378 					ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
5379 					mpt->outofbeer = 0;
5380 					mpt_lprt(mpt, MPT_PRT_DEBUG, "THAWQ\n");
5381 				}
5382 				MPTLOCK_2_CAMLOCK(mpt);
5383 				xpt_done(ccb);
5384 				CAMLOCK_2_MPTLOCK(mpt);
5385 				break;
5386 			}
5387 			/*
5388 			 * Otherwise, send status (and sense)
5389 			 */
5390 			if (ccb->ccb_h.flags & CAM_SEND_SENSE) {
5391 				sp = sense;
5392 				memcpy(sp, &ccb->csio.sense_data,
5393 				   min(ccb->csio.sense_len, MPT_SENSE_SIZE));
5394 			}
5395 			mpt_scsi_tgt_status(mpt, ccb, req,
5396 			    ccb->csio.scsi_status, sp);
5397 			break;
5398 		}
5399 		case TGT_STATE_SENDING_STATUS:
5400 		case TGT_STATE_MOVING_DATA_AND_STATUS:
5401 		{
5402 			int ioindex;
5403 			ccb = tgt->ccb;
5404 
5405 			if (tgt->req == NULL) {
5406 				panic("mpt: turbo target reply with null "
5407 				    "associated request sending status");
5408 				/* NOTREACHED */
5409 			}
5410 
5411 			if (ccb) {
5412 				tgt->ccb = NULL;
5413 				if (tgt->state ==
5414 				    TGT_STATE_MOVING_DATA_AND_STATUS) {
5415 					tgt->nxfers++;
5416 				}
5417 				mpt_req_untimeout(req, mpt_timeout, ccb);
5418 				if (ccb->ccb_h.flags & CAM_SEND_SENSE) {
5419 					ccb->ccb_h.status |= CAM_SENT_SENSE;
5420 				}
5421 				mpt_lprt(mpt, MPT_PRT_DEBUG,
5422 				    "TARGET_STATUS tag %x sts %x flgs %x req "
5423 				    "%p\n", ccb->csio.tag_id, ccb->ccb_h.status,
5424 				    ccb->ccb_h.flags, tgt->req);
5425 				/*
5426 				 * Free the Target Send Status Request
5427 				 */
5428 				KASSERT(tgt->req->ccb == ccb,
5429 				    ("tgt->req %p:%u tgt->req->ccb %p",
5430 				    tgt->req, tgt->req->serno, tgt->req->ccb));
5431 				/*
5432 				 * Notify CAM that we're done
5433 				 */
5434 				mpt_set_ccb_status(ccb, CAM_REQ_CMP);
5435 				ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
5436 				KASSERT(ccb->ccb_h.status,
5437 				    ("ZERO ccb sts at %d\n", __LINE__));
5438 				tgt->ccb = NULL;
5439 			} else {
5440 				mpt_lprt(mpt, MPT_PRT_DEBUG,
5441 				    "TARGET_STATUS non-CAM for  req %p:%u\n",
5442 				    tgt->req, tgt->req->serno);
5443 			}
5444 			TAILQ_REMOVE(&mpt->request_pending_list,
5445 			    tgt->req, links);
5446 			mpt_free_request(mpt, tgt->req);
5447 			tgt->req = NULL;
5448 
5449 			/*
5450 			 * And re-post the Command Buffer.
5451 			 * This will reset the state.
5452 			 */
5453 			ioindex = GET_IO_INDEX(reply_desc);
5454 			TAILQ_REMOVE(&mpt->request_pending_list, req, links);
5455 			tgt->is_local = 0;
5456 			mpt_post_target_command(mpt, req, ioindex);
5457 
5458 			/*
5459 			 * And post a done for anyone who cares
5460 			 */
5461 			if (ccb) {
5462 				if (mpt->outofbeer) {
5463 					ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
5464 					mpt->outofbeer = 0;
5465 					mpt_lprt(mpt, MPT_PRT_DEBUG, "THAWQ\n");
5466 				}
5467 				MPTLOCK_2_CAMLOCK(mpt);
5468 				xpt_done(ccb);
5469 				CAMLOCK_2_MPTLOCK(mpt);
5470 			}
5471 			break;
5472 		}
5473 		case TGT_STATE_NIL:	/* XXX This Never Happens XXX */
5474 			tgt->state = TGT_STATE_LOADED;
5475 			break;
5476 		default:
5477 			mpt_prt(mpt, "Unknown Target State 0x%x in Context "
5478 			    "Reply Function\n", tgt->state);
5479 		}
5480 		return (TRUE);
5481 	}
5482 
5483 	status = le16toh(reply_frame->IOCStatus);
5484 	if (status != MPI_IOCSTATUS_SUCCESS) {
5485 		dbg = MPT_PRT_ERROR;
5486 	} else {
5487 		dbg = MPT_PRT_DEBUG1;
5488 	}
5489 
5490 	mpt_lprt(mpt, dbg,
5491 	    "SCSI_TGT REPLY: req=%p:%u reply=%p func=%x IOCstatus 0x%x\n",
5492 	     req, req->serno, reply_frame, reply_frame->Function, status);
5493 
5494 	switch (reply_frame->Function) {
5495 	case MPI_FUNCTION_TARGET_CMD_BUFFER_POST:
5496 	{
5497 		mpt_tgt_state_t *tgt;
5498 #ifdef	INVARIANTS
5499 		mpt_req_spcl(mpt, req, "tgt reply BUFFER POST", __LINE__);
5500 #endif
5501 		if (status != MPI_IOCSTATUS_SUCCESS) {
5502 			/*
5503 			 * XXX What to do?
5504 			 */
5505 			break;
5506 		}
5507 		tgt = MPT_TGT_STATE(mpt, req);
5508 		KASSERT(tgt->state == TGT_STATE_LOADING,
5509 		    ("bad state 0x%x on reply to buffer post\n", tgt->state));
5510 		mpt_assign_serno(mpt, req);
5511 		tgt->state = TGT_STATE_LOADED;
5512 		break;
5513 	}
5514 	case MPI_FUNCTION_TARGET_ASSIST:
5515 #ifdef	INVARIANTS
5516 		mpt_req_not_spcl(mpt, req, "tgt reply TARGET ASSIST", __LINE__);
5517 #endif
5518 		mpt_prt(mpt, "target assist completion\n");
5519 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
5520 		mpt_free_request(mpt, req);
5521 		break;
5522 	case MPI_FUNCTION_TARGET_STATUS_SEND:
5523 #ifdef	INVARIANTS
5524 		mpt_req_not_spcl(mpt, req, "tgt reply STATUS SEND", __LINE__);
5525 #endif
5526 		mpt_prt(mpt, "status send completion\n");
5527 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
5528 		mpt_free_request(mpt, req);
5529 		break;
5530 	case MPI_FUNCTION_TARGET_MODE_ABORT:
5531 	{
5532 		PTR_MSG_TARGET_MODE_ABORT_REPLY abtrp =
5533 		    (PTR_MSG_TARGET_MODE_ABORT_REPLY) reply_frame;
5534 		PTR_MSG_TARGET_MODE_ABORT abtp =
5535 		    (PTR_MSG_TARGET_MODE_ABORT) req->req_vbuf;
5536 		uint32_t cc = GET_IO_INDEX(le32toh(abtp->ReplyWord));
5537 #ifdef	INVARIANTS
5538 		mpt_req_not_spcl(mpt, req, "tgt reply TMODE ABORT", __LINE__);
5539 #endif
5540 		mpt_prt(mpt, "ABORT RX_ID 0x%x Complete; status 0x%x cnt %u\n",
5541 		    cc, le16toh(abtrp->IOCStatus), le32toh(abtrp->AbortCount));
5542 		TAILQ_REMOVE(&mpt->request_pending_list, req, links);
5543 		mpt_free_request(mpt, req);
5544 		break;
5545 	}
5546 	default:
5547 		mpt_prt(mpt, "Unknown Target Address Reply Function code: "
5548 		    "0x%x\n", reply_frame->Function);
5549 		break;
5550 	}
5551 	return (TRUE);
5552 }
5553