xref: /freebsd/sys/dev/aac/aac_cam.c (revision f9218d3d4fd34f082473b3a021c6d4d109fb47cf) 
1 /*
2  * Copyright (c) 2002 Adaptec, Inc.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  *	$FreeBSD$
27  */
28 
29 /*
30  * CAM front-end for communicating with non-DASD devices
31  */
32 
33 #include "opt_aac.h"
34 
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/sysctl.h>
39 #include <sys/malloc.h>
40 
41 #include <cam/cam.h>
42 #include <cam/cam_ccb.h>
43 #include <cam/cam_debug.h>
44 #include <cam/cam_sim.h>
45 #include <cam/cam_xpt_sim.h>
46 #include <cam/scsi/scsi_all.h>
47 #include <cam/scsi/scsi_message.h>
48 
49 #include <sys/bus.h>
50 #include <sys/conf.h>
51 #include <sys/devicestat.h>
52 #include <sys/disk.h>
53 
54 #include <machine/md_var.h>
55 #include <machine/bus.h>
56 #include <sys/rman.h>
57 
58 #include <vm/vm.h>
59 #include <vm/pmap.h>
60 
61 #include <dev/aac/aacreg.h>
62 #include <dev/aac/aac_ioctl.h>
63 #include <dev/aac/aacvar.h>
64 
65 struct aac_cam {
66 	device_t		dev;
67 	struct aac_sim		*inf;
68 	struct cam_sim		*sim;
69 	struct cam_path		*path;
70 };
71 
72 static int aac_cam_probe(device_t dev);
73 static int aac_cam_attach(device_t dev);
74 static int aac_cam_detach(device_t dev);
75 static void aac_cam_action(struct cam_sim *, union ccb *);
76 static void aac_cam_poll(struct cam_sim *);
77 static void aac_cam_complete(struct aac_command *);
78 static u_int32_t aac_cam_reset_bus(struct cam_sim *, union ccb *);
79 static u_int32_t aac_cam_abort_ccb(struct cam_sim *, union ccb *);
80 static u_int32_t aac_cam_term_io(struct cam_sim *, union ccb *);
81 static int aac_cam_get_tran_settings(struct aac_softc *, struct ccb_trans_settings *, u_int32_t);
82 
83 static devclass_t	aac_pass_devclass;
84 
85 static device_method_t	aac_pass_methods[] = {
86 	DEVMETHOD(device_probe,		aac_cam_probe),
87 	DEVMETHOD(device_attach,	aac_cam_attach),
88 	DEVMETHOD(device_detach,	aac_cam_detach),
89 	{ 0, 0 }
90 };
91 
92 static driver_t	aac_pass_driver = {
93 	"aacp",
94 	aac_pass_methods,
95 	sizeof(struct aac_cam)
96 };
97 
98 DRIVER_MODULE(aacp, aac, aac_pass_driver, aac_pass_devclass, 0, 0);
99 MODULE_DEPEND(aacp, cam, 1, 1, 1);
100 
101 MALLOC_DEFINE(M_AACCAM, "aaccam", "AAC CAM info");
102 
103 static int
104 aac_cam_probe(device_t dev)
105 {
106 	debug_called(2);
107 
108 	return (0);
109 }
110 
111 static int
112 aac_cam_detach(device_t dev)
113 {
114 	struct aac_cam *camsc;
115 	debug_called(2);
116 
117 	camsc = (struct aac_cam *)device_get_softc(dev);
118 
119 	xpt_async(AC_LOST_DEVICE, camsc->path, NULL);
120 	xpt_free_path(camsc->path);
121 	xpt_bus_deregister(cam_sim_path(camsc->sim));
122 	cam_sim_free(camsc->sim, /*free_devq*/TRUE);
123 
124 	return (0);
125 }
126 
127 /*
128  * Register the driver as a CAM SIM
129  */
130 static int
131 aac_cam_attach(device_t dev)
132 {
133 	struct cam_devq *devq;
134 	struct cam_sim *sim;
135 	struct cam_path *path;
136 	struct aac_cam *camsc;
137 	struct aac_sim *inf;
138 
139 	debug_called(1);
140 
141 	camsc = (struct aac_cam *)device_get_softc(dev);
142 	inf = (struct aac_sim *)device_get_ivars(dev);
143 	camsc->inf = inf;
144 
145 	devq = cam_simq_alloc(inf->TargetsPerBus);
146 	if (devq == NULL)
147 		return (EIO);
148 
149 	sim = cam_sim_alloc(aac_cam_action, aac_cam_poll, "aacp", camsc,
150 	    device_get_unit(dev), 1, 1, devq);
151 	if (sim == NULL) {
152 		cam_simq_free(devq);
153 		return (EIO);
154 	}
155 
156 	/* Since every bus has it's own sim, every bus 'appears' as bus 0 */
157 	if (xpt_bus_register(sim, 0) != CAM_SUCCESS) {
158 		cam_sim_free(sim, TRUE);
159 		return (EIO);
160 	}
161 
162 	if (xpt_create_path(&path, NULL, cam_sim_path(sim),
163 	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
164 		xpt_bus_deregister(cam_sim_path(sim));
165 		cam_sim_free(sim, TRUE);
166 		return (EIO);
167 	}
168 
169 	camsc->sim = sim;
170 	camsc->path = path;
171 
172 	return (0);
173 }
174 
175 static void
176 aac_cam_action(struct cam_sim *sim, union ccb *ccb)
177 {
178 	struct	aac_cam *camsc;
179 	struct	aac_softc *sc;
180 	struct	aac_srb32 *srb;
181 	struct	aac_fib *fib;
182 	struct	aac_command *cm;
183 
184 	debug_called(2);
185 
186 	camsc = (struct aac_cam *)cam_sim_softc(sim);
187 	sc = camsc->inf->aac_sc;
188 
189 	/* Synchronous ops, and ops that don't require communication with the
190 	 * controller */
191 	switch(ccb->ccb_h.func_code) {
192 	case XPT_SCSI_IO:
193 	case XPT_RESET_DEV:
194 		/* These are handled down below */
195 		break;
196 	case XPT_CALC_GEOMETRY:
197 	{
198 		struct ccb_calc_geometry *ccg;
199 		u_int32_t size_mb;
200 		u_int32_t secs_per_cylinder;
201 
202 		ccg = &ccb->ccg;
203 		size_mb = ccg->volume_size /
204 		    ((1024L * 1024L) / ccg->block_size);
205 		if (size_mb >= (2 * 1024)) {		/* 2GB */
206 			ccg->heads = 255;
207 			ccg->secs_per_track = 63;
208 		} else if (size_mb >= (1 * 1024)) {	/* 1GB */
209 			ccg->heads = 128;
210 			ccg->secs_per_track = 32;
211 		} else {
212 			ccg->heads = 64;
213 			ccg->secs_per_track = 32;
214 		}
215 		secs_per_cylinder = ccg->heads * ccg->secs_per_track;
216 		ccg->cylinders = ccg->volume_size / secs_per_cylinder;
217 
218 		ccb->ccb_h.status = CAM_REQ_CMP;
219 		xpt_done(ccb);
220 		return;
221 	}
222 	case XPT_PATH_INQ:
223 	{
224 		struct ccb_pathinq *cpi = &ccb->cpi;
225 
226 		cpi->version_num = 1;
227 		cpi->hba_inquiry = PI_WIDE_16;
228 		cpi->target_sprt = 0;
229 
230 		/* Resetting via the passthrough causes problems. */
231 		cpi->hba_misc = PIM_NOBUSRESET;
232 		cpi->hba_eng_cnt = 0;
233 		cpi->max_target = camsc->inf->TargetsPerBus;
234 		cpi->max_lun = 8;	/* Per the controller spec */
235 		cpi->initiator_id = camsc->inf->InitiatorBusId;
236 		cpi->bus_id = camsc->inf->BusNumber;
237 		cpi->base_transfer_speed = 3300;
238 		strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
239 		strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
240 		strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
241 		cpi->unit_number = cam_sim_unit(sim);
242 
243 		ccb->ccb_h.status = CAM_REQ_CMP;
244 		xpt_done(ccb);
245 		return;
246 	}
247 	case XPT_GET_TRAN_SETTINGS:
248 	{
249 		u_int32_t handle;
250 
251 		handle = AAC_BTL_TO_HANDLE(camsc->inf->BusNumber,
252 		    ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
253 		ccb->ccb_h.status = aac_cam_get_tran_settings(sc, &ccb->cts,
254 		    handle);
255 		xpt_done(ccb);
256 		return;
257 	}
258 	case XPT_SET_TRAN_SETTINGS:
259 		ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
260 		xpt_done(ccb);
261 		return;
262 	case XPT_RESET_BUS:
263 		if (!(sc->quirks & AAC_QUIRK_CAM_NORESET)) {
264 			ccb->ccb_h.status = aac_cam_reset_bus(sim, ccb);
265 		} else {
266 			ccb->ccb_h.status = CAM_REQ_CMP;
267 		}
268 		xpt_done(ccb);
269 		return;
270 	case XPT_ABORT:
271 		ccb->ccb_h.status = aac_cam_abort_ccb(sim, ccb);
272 		xpt_done(ccb);
273 		return;
274 	case XPT_TERM_IO:
275 		ccb->ccb_h.status = aac_cam_term_io(sim, ccb);
276 		xpt_done(ccb);
277 		return;
278 	default:
279 		device_printf(sc->aac_dev, "Unsupported command 0x%x\n",
280 		    ccb->ccb_h.func_code);
281 		ccb->ccb_h.status = CAM_PROVIDE_FAIL;
282 		xpt_done(ccb);
283 		return;
284 	}
285 
286 	/* Async ops that require communcation with the controller */
287 
288 	AAC_LOCK_ACQUIRE(&sc->aac_io_lock);
289 	if (aac_alloc_command(sc, &cm)) {
290 		AAC_LOCK_RELEASE(&sc->aac_io_lock);
291 		xpt_freeze_simq(sim, 1);
292 		ccb->ccb_h.status = CAM_REQUEUE_REQ;
293 		xpt_done(ccb);
294 		return;
295 	}
296 
297 	fib = cm->cm_fib;
298 	srb = (struct aac_srb32 *)&fib->data[0];
299 	cm->cm_datalen = 0;
300 
301 	switch (ccb->ccb_h.flags & CAM_DIR_MASK) {
302 	case CAM_DIR_IN:
303 		srb->flags = AAC_SRB_FLAGS_DATA_IN;
304 		cm->cm_flags |= AAC_CMD_DATAIN;
305 		break;
306 	case CAM_DIR_OUT:
307 		srb->flags = AAC_SRB_FLAGS_DATA_OUT;
308 		cm->cm_flags |= AAC_CMD_DATAOUT;
309 		break;
310 	case CAM_DIR_NONE:
311 		srb->flags = AAC_SRB_FLAGS_NO_DATA_XFER;
312 		break;
313 	default:
314 		srb->flags = AAC_SRB_FLAGS_UNSPECIFIED_DIRECTION;
315 		cm->cm_flags |= AAC_CMD_DATAIN | AAC_CMD_DATAOUT;
316 		break;
317 	}
318 
319 	switch(ccb->ccb_h.func_code) {
320 	case XPT_SCSI_IO:
321 	{
322 		struct ccb_scsiio *csio = &ccb->csio;
323 
324 		srb->function = AAC_SRB_FUNC_EXECUTE_SCSI;
325 
326 		/*
327 		 * Copy the CDB into the SRB.  It's only 6-16 bytes,
328 		 * so a copy is not too expensive.
329 		 */
330 		srb->cdb_len = csio->cdb_len;
331 		if (ccb->ccb_h.flags & CAM_CDB_POINTER)
332 			bcopy(csio->cdb_io.cdb_ptr, (u_int8_t *)&srb->cdb[0],
333 			    srb->cdb_len);
334 		else
335 			bcopy(csio->cdb_io.cdb_bytes, (u_int8_t *)&srb->cdb[0],
336 			    srb->cdb_len);
337 
338 		/* Map the s/g list. XXX 32bit addresses only! */
339 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
340 			if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) {
341 				srb->data_len = csio->dxfer_len;
342 				if (ccb->ccb_h.flags & CAM_DATA_PHYS) {
343 					srb->sg_map32.SgCount = 1;
344 					srb->sg_map32.SgEntry[0].SgAddress =
345 					    (u_int32_t)csio->data_ptr;
346 					srb->sg_map32.SgEntry[0].SgByteCount =
347 					    csio->dxfer_len;
348 				} else {
349 					/*
350 					 * Arrange things so that the S/G
351 					 * map will get set up automagically
352 					 */
353 					cm->cm_data = (void *)csio->data_ptr;
354 					cm->cm_datalen = csio->dxfer_len;
355 					cm->cm_sgtable = &srb->sg_map32;
356 				}
357 			} else {
358 				/* XXX Need to handle multiple s/g elements */
359 				panic("aac_cam: multiple s/g elements");
360 			}
361 		} else {
362 			srb->sg_map32.SgCount = 0;
363 			srb->sg_map32.SgEntry[0].SgByteCount = 0;
364 			srb->data_len = 0;
365 		}
366 
367 		break;
368 	}
369 	case XPT_RESET_DEV:
370 		if (!(sc->quirks & AAC_QUIRK_CAM_NORESET)) {
371 			srb->function = AAC_SRB_FUNC_RESET_DEVICE;
372 			break;
373 		} else {
374 			ccb->ccb_h.status = CAM_REQ_CMP;
375 			xpt_done(ccb);
376 			return;
377 		}
378 	default:
379 		break;
380 	}
381 
382 	srb->bus = camsc->inf->BusNumber; /* Bus number relative to the card */
383 	srb->target = ccb->ccb_h.target_id;
384 	srb->lun = ccb->ccb_h.target_lun;
385 	srb->timeout = ccb->ccb_h.timeout;	/* XXX */
386 	srb->retry_limit = 0;
387 
388 	cm->cm_complete = aac_cam_complete;
389 	cm->cm_private = ccb;
390 	cm->cm_timestamp = time_second;
391 	cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE;
392 
393 	fib->Header.XferState =
394 	    AAC_FIBSTATE_HOSTOWNED	|
395 	    AAC_FIBSTATE_INITIALISED	|
396 	    AAC_FIBSTATE_FROMHOST	|
397 	    AAC_FIBSTATE_REXPECTED	|
398 	    AAC_FIBSTATE_NORM;
399 	fib->Header.Command = ScsiPortCommand;
400 	fib->Header.Size = sizeof(struct aac_fib_header) +
401 	    sizeof(struct aac_srb32);
402 
403 	aac_enqueue_ready(cm);
404 	aac_startio(cm->cm_sc);
405 
406 	AAC_LOCK_RELEASE(&sc->aac_io_lock);
407 
408 	return;
409 }
410 
411 static void
412 aac_cam_poll(struct cam_sim *sim)
413 {
414 	/*
415 	 * Pinging the interrupt routine isn't very safe, nor is it
416 	 * really necessary.  Do nothing.
417 	 */
418 }
419 
420 static void
421 aac_cam_complete(struct aac_command *cm)
422 {
423 	union	ccb *ccb;
424 	struct 	aac_srb_response *srbr;
425 	struct	aac_softc *sc;
426 
427 	debug_called(2);
428 
429 	sc = cm->cm_sc;
430 	ccb = cm->cm_private;
431 	srbr = (struct aac_srb_response *)&cm->cm_fib->data[0];
432 
433 	if (srbr->fib_status != 0) {
434 		device_printf(sc->aac_dev, "Passthru FIB failed!\n");
435 		ccb->ccb_h.status = CAM_REQ_ABORTED;
436 	} else {
437 		/*
438 		 * The SRB error codes just happen to match the CAM error
439 		 * codes.  How convienient!
440 		 */
441 		ccb->ccb_h.status = srbr->srb_status;
442 
443 		/* Take care of SCSI_IO ops. */
444 		if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
445 			u_int8_t command, device;
446 
447 			ccb->csio.scsi_status = srbr->scsi_status;
448 
449 			/* Take care of autosense */
450 			if (srbr->sense_len) {
451 				int sense_len, scsi_sense_len;
452 
453 				scsi_sense_len = sizeof(struct scsi_sense_data);
454 				bzero(&ccb->csio.sense_data, scsi_sense_len);
455 				sense_len = (srbr->sense_len >
456 				    scsi_sense_len) ? scsi_sense_len :
457 				    srbr->sense_len;
458 				bcopy(&srbr->sense[0], &ccb->csio.sense_data,
459 				    srbr->sense_len);
460 				ccb->csio.sense_len = sense_len;
461 				ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
462 				scsi_sense_print(&ccb->csio);
463 			}
464 
465 			/* If this is an inquiry command, fake things out */
466 			if (ccb->ccb_h.flags & CAM_CDB_POINTER)
467 				command = ccb->csio.cdb_io.cdb_ptr[0];
468 			else
469 				command = ccb->csio.cdb_io.cdb_bytes[0];
470 
471 			if ((command == INQUIRY) &&
472 			    (ccb->ccb_h.status == CAM_REQ_CMP)) {
473 				device = ccb->csio.data_ptr[0] & 0x1f;
474 				/*
475 				 * We want DASD and PROC devices to only be
476 				 * visible through the pass device.
477 				 */
478 				if ((device == T_DIRECT) ||
479 				    (device == T_PROCESSOR) ||
480 				    (sc->quirks & AAC_QUIRK_CAM_PASSONLY))
481 					ccb->csio.data_ptr[0] =
482 					    ((device & 0xe0) | T_NODEVICE);
483 			}
484 		}
485 	}
486 
487 	aac_release_command(cm);
488 
489 	xpt_done(ccb);
490 
491 	return;
492 }
493 
494 static u_int32_t
495 aac_cam_reset_bus(struct cam_sim *sim, union ccb *ccb)
496 {
497 	struct aac_fib *fib;
498 	struct aac_softc *sc;
499 	struct aac_cam *camsc;
500 	struct aac_vmioctl *vmi;
501 	struct aac_resetbus *rbc;
502 	int e;
503 
504 	camsc = (struct aac_cam *)cam_sim_softc(sim);
505 	sc = camsc->inf->aac_sc;
506 
507 	if (sc == NULL) {
508 		printf("Null sc?\n");
509 		return (CAM_REQ_ABORTED);
510 	}
511 
512 	aac_alloc_sync_fib(sc, &fib, 0);
513 
514 	vmi = (struct aac_vmioctl *)&fib->data[0];
515 	bzero(vmi, sizeof(struct aac_vmioctl));
516 
517 	vmi->Command = VM_Ioctl;
518 	vmi->ObjType = FT_DRIVE;
519 	vmi->MethId = sc->scsi_method_id;
520 	vmi->ObjId = 0;
521 	vmi->IoctlCmd = ResetBus;
522 
523 	rbc = (struct aac_resetbus *)&vmi->IoctlBuf[0];
524 	rbc->BusNumber = camsc->inf->BusNumber;
525 
526 	e = aac_sync_fib(sc, ContainerCommand, 0, fib,
527 	    sizeof(struct aac_vmioctl));
528 	if (e) {
529 		device_printf(sc->aac_dev,"Error %d sending ResetBus command\n",
530 		    e);
531 		aac_release_sync_fib(sc);
532 		return (CAM_REQ_ABORTED);
533 	}
534 
535 	aac_release_sync_fib(sc);
536 	return (CAM_REQ_CMP);
537 }
538 
539 static u_int32_t
540 aac_cam_abort_ccb(struct cam_sim *sim, union ccb *ccb)
541 {
542 	return (CAM_UA_ABORT);
543 }
544 
545 static u_int32_t
546 aac_cam_term_io(struct cam_sim *sim, union ccb *ccb)
547 {
548 	return (CAM_UA_TERMIO);
549 }
550 
551 static int
552 aac_cam_get_tran_settings(struct aac_softc *sc, struct ccb_trans_settings *cts, u_int32_t handle)
553 {
554 	struct aac_fib *fib;
555 	struct aac_vmioctl *vmi;
556 	struct aac_vmi_devinfo_resp *vmi_resp;
557 	int error;
558 
559 	aac_alloc_sync_fib(sc, &fib, 0);
560 	vmi = (struct aac_vmioctl *)&fib->data[0];
561 	bzero(vmi, sizeof(struct aac_vmioctl));
562 
563 	vmi->Command = VM_Ioctl;
564 	vmi->ObjType = FT_DRIVE;
565 	vmi->MethId = sc->scsi_method_id;
566 	vmi->ObjId = handle;
567 	vmi->IoctlCmd = GetDeviceProbeInfo;
568 
569 	error = aac_sync_fib(sc, ContainerCommand, 0, fib,
570 	    sizeof(struct aac_vmioctl));
571 	if (error) {
572 		device_printf(sc->aac_dev, "Error %d sending GetDeviceProbeInfo"
573 		              " command\n", error);
574 		aac_release_sync_fib(sc);
575 		return (CAM_REQ_INVALID);
576 	}
577 
578 	vmi_resp = (struct aac_vmi_devinfo_resp *)&fib->data[0];
579 	if (vmi_resp->Status != ST_OK) {
580 		/*
581 		 * The only reason why this command will return an error is
582 		 * if the requested device doesn't exist.
583 		 */
584 		debug(1, "GetDeviceProbeInfo returned %d\n", vmi_resp->Status);
585 		aac_release_sync_fib(sc);
586 		return (CAM_DEV_NOT_THERE);
587 	}
588 
589 	cts->bus_width = ((vmi_resp->Inquiry7 & 0x60) >> 5);
590 	cts->valid = CCB_TRANS_BUS_WIDTH_VALID;
591 
592 	if (vmi_resp->ScsiRate) {
593 		cts->sync_period =
594 		    scsi_calc_syncparam((10000 / vmi_resp->ScsiRate));
595 		cts->sync_offset = vmi_resp->ScsiOffset;
596 		cts->valid |= CCB_TRANS_SYNC_RATE_VALID		|
597 			      CCB_TRANS_SYNC_OFFSET_VALID;
598 	}
599 
600 	cts->flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB);
601 	cts->valid |= CCB_TRANS_DISC_VALID		|
602 		      CCB_TRANS_TQ_VALID;
603 
604 	aac_release_sync_fib(sc);
605 	return (CAM_REQ_CMP);
606 }
607