1 /*-
2 * SPDX-License-Identifier: (BSD-2-Clause-FreeBSD AND BSD-4-Clause)
3 *
4 * Copyright (c) 1997 Justin T. Gibbs.
5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification, immediately at the beginning of the file.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 /*-
31 * Copyright (c) 1996, 1997 Jason R. Thorpe <[email protected]>
32 * All rights reserved.
33 *
34 * Partially based on an autochanger driver written by Stefan Grefen
35 * and on an autochanger driver written by the Systems Programming Group
36 * at the University of Utah Computer Science Department.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. All advertising materials mentioning features or use of this software
47 * must display the following acknowledgements:
48 * This product includes software developed by Jason R. Thorpe
49 * for And Communications, http://www.and.com/
50 * 4. The name of the author may not be used to endorse or promote products
51 * derived from this software without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
54 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
56 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
57 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
58 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
59 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
60 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
61 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 *
65 * $NetBSD: ch.c,v 1.34 1998/08/31 22:28:06 cgd Exp $
66 */
67
68 #include <sys/cdefs.h>
69 __FBSDID("$FreeBSD$");
70
71 #include <sys/param.h>
72 #include <sys/queue.h>
73 #include <sys/systm.h>
74 #include <sys/kernel.h>
75 #include <sys/types.h>
76 #include <sys/malloc.h>
77 #include <sys/fcntl.h>
78 #include <sys/conf.h>
79 #include <sys/chio.h>
80 #include <sys/errno.h>
81 #include <sys/devicestat.h>
82
83 #include <cam/cam.h>
84 #include <cam/cam_ccb.h>
85 #include <cam/cam_periph.h>
86 #include <cam/cam_xpt_periph.h>
87 #include <cam/cam_debug.h>
88
89 #include <cam/scsi/scsi_all.h>
90 #include <cam/scsi/scsi_message.h>
91 #include <cam/scsi/scsi_ch.h>
92
93 /*
94 * Timeout definitions for various changer related commands. They may
95 * be too short for some devices (especially the timeout for INITIALIZE
96 * ELEMENT STATUS).
97 */
98
99 static const u_int32_t CH_TIMEOUT_MODE_SENSE = 6000;
100 static const u_int32_t CH_TIMEOUT_MOVE_MEDIUM = 15 * 60 * 1000;
101 static const u_int32_t CH_TIMEOUT_EXCHANGE_MEDIUM = 15 * 60 * 1000;
102 static const u_int32_t CH_TIMEOUT_POSITION_TO_ELEMENT = 15 * 60 * 1000;
103 static const u_int32_t CH_TIMEOUT_READ_ELEMENT_STATUS = 5 * 60 * 1000;
104 static const u_int32_t CH_TIMEOUT_SEND_VOLTAG = 10000;
105 static const u_int32_t CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS = 500000;
106
107 typedef enum {
108 CH_FLAG_INVALID = 0x001
109 } ch_flags;
110
111 typedef enum {
112 CH_STATE_PROBE,
113 CH_STATE_NORMAL
114 } ch_state;
115
116 typedef enum {
117 CH_CCB_PROBE
118 } ch_ccb_types;
119
120 typedef enum {
121 CH_Q_NONE = 0x00,
122 CH_Q_NO_DBD = 0x01,
123 CH_Q_NO_DVCID = 0x02
124 } ch_quirks;
125
126 #define CH_Q_BIT_STRING \
127 "\020" \
128 "\001NO_DBD" \
129 "\002NO_DVCID"
130
131 #define ccb_state ppriv_field0
132 #define ccb_bp ppriv_ptr1
133
134 struct scsi_mode_sense_data {
135 struct scsi_mode_header_6 header;
136 struct scsi_mode_blk_desc blk_desc;
137 union {
138 struct page_element_address_assignment ea;
139 struct page_transport_geometry_parameters tg;
140 struct page_device_capabilities cap;
141 } pages;
142 };
143
144 struct ch_softc {
145 ch_flags flags;
146 ch_state state;
147 ch_quirks quirks;
148 union ccb saved_ccb;
149 struct devstat *device_stats;
150 struct cdev *dev;
151 int open_count;
152
153 int sc_picker; /* current picker */
154
155 /*
156 * The following information is obtained from the
157 * element address assignment page.
158 */
159 int sc_firsts[CHET_MAX + 1]; /* firsts */
160 int sc_counts[CHET_MAX + 1]; /* counts */
161
162 /*
163 * The following mask defines the legal combinations
164 * of elements for the MOVE MEDIUM command.
165 */
166 u_int8_t sc_movemask[CHET_MAX + 1];
167
168 /*
169 * As above, but for EXCHANGE MEDIUM.
170 */
171 u_int8_t sc_exchangemask[CHET_MAX + 1];
172
173 /*
174 * Quirks; see below. XXX KDM not implemented yet
175 */
176 int sc_settledelay; /* delay for settle */
177 };
178
179 static d_open_t chopen;
180 static d_close_t chclose;
181 static d_ioctl_t chioctl;
182 static periph_init_t chinit;
183 static periph_ctor_t chregister;
184 static periph_oninv_t choninvalidate;
185 static periph_dtor_t chcleanup;
186 static periph_start_t chstart;
187 static void chasync(void *callback_arg, u_int32_t code,
188 struct cam_path *path, void *arg);
189 static void chdone(struct cam_periph *periph,
190 union ccb *done_ccb);
191 static int cherror(union ccb *ccb, u_int32_t cam_flags,
192 u_int32_t sense_flags);
193 static int chmove(struct cam_periph *periph,
194 struct changer_move *cm);
195 static int chexchange(struct cam_periph *periph,
196 struct changer_exchange *ce);
197 static int chposition(struct cam_periph *periph,
198 struct changer_position *cp);
199 static int chgetelemstatus(struct cam_periph *periph,
200 int scsi_version, u_long cmd,
201 struct changer_element_status_request *csr);
202 static int chsetvoltag(struct cam_periph *periph,
203 struct changer_set_voltag_request *csvr);
204 static int chielem(struct cam_periph *periph,
205 unsigned int timeout);
206 static int chgetparams(struct cam_periph *periph);
207 static int chscsiversion(struct cam_periph *periph);
208
209 static struct periph_driver chdriver =
210 {
211 chinit, "ch",
212 TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0
213 };
214
215 PERIPHDRIVER_DECLARE(ch, chdriver);
216
217 static struct cdevsw ch_cdevsw = {
218 .d_version = D_VERSION,
219 .d_flags = D_TRACKCLOSE,
220 .d_open = chopen,
221 .d_close = chclose,
222 .d_ioctl = chioctl,
223 .d_name = "ch",
224 };
225
226 static MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers");
227
228 static void
chinit(void)229 chinit(void)
230 {
231 cam_status status;
232
233 /*
234 * Install a global async callback. This callback will
235 * receive async callbacks like "new device found".
236 */
237 status = xpt_register_async(AC_FOUND_DEVICE, chasync, NULL, NULL);
238
239 if (status != CAM_REQ_CMP) {
240 printf("ch: Failed to attach master async callback "
241 "due to status 0x%x!\n", status);
242 }
243 }
244
245 static void
chdevgonecb(void * arg)246 chdevgonecb(void *arg)
247 {
248 struct ch_softc *softc;
249 struct cam_periph *periph;
250 struct mtx *mtx;
251 int i;
252
253 periph = (struct cam_periph *)arg;
254 mtx = cam_periph_mtx(periph);
255 mtx_lock(mtx);
256
257 softc = (struct ch_softc *)periph->softc;
258 KASSERT(softc->open_count >= 0, ("Negative open count %d",
259 softc->open_count));
260
261 /*
262 * When we get this callback, we will get no more close calls from
263 * devfs. So if we have any dangling opens, we need to release the
264 * reference held for that particular context.
265 */
266 for (i = 0; i < softc->open_count; i++)
267 cam_periph_release_locked(periph);
268
269 softc->open_count = 0;
270
271 /*
272 * Release the reference held for the device node, it is gone now.
273 */
274 cam_periph_release_locked(periph);
275
276 /*
277 * We reference the lock directly here, instead of using
278 * cam_periph_unlock(). The reason is that the final call to
279 * cam_periph_release_locked() above could result in the periph
280 * getting freed. If that is the case, dereferencing the periph
281 * with a cam_periph_unlock() call would cause a page fault.
282 */
283 mtx_unlock(mtx);
284 }
285
286 static void
choninvalidate(struct cam_periph * periph)287 choninvalidate(struct cam_periph *periph)
288 {
289 struct ch_softc *softc;
290
291 softc = (struct ch_softc *)periph->softc;
292
293 /*
294 * De-register any async callbacks.
295 */
296 xpt_register_async(0, chasync, periph, periph->path);
297
298 softc->flags |= CH_FLAG_INVALID;
299
300 /*
301 * Tell devfs this device has gone away, and ask for a callback
302 * when it has cleaned up its state.
303 */
304 destroy_dev_sched_cb(softc->dev, chdevgonecb, periph);
305 }
306
307 static void
chcleanup(struct cam_periph * periph)308 chcleanup(struct cam_periph *periph)
309 {
310 struct ch_softc *softc;
311
312 softc = (struct ch_softc *)periph->softc;
313
314 devstat_remove_entry(softc->device_stats);
315
316 free(softc, M_DEVBUF);
317 }
318
319 static void
chasync(void * callback_arg,u_int32_t code,struct cam_path * path,void * arg)320 chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg)
321 {
322 struct cam_periph *periph;
323
324 periph = (struct cam_periph *)callback_arg;
325
326 switch(code) {
327 case AC_FOUND_DEVICE:
328 {
329 struct ccb_getdev *cgd;
330 cam_status status;
331
332 cgd = (struct ccb_getdev *)arg;
333 if (cgd == NULL)
334 break;
335
336 if (cgd->protocol != PROTO_SCSI)
337 break;
338 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED)
339 break;
340 if (SID_TYPE(&cgd->inq_data)!= T_CHANGER)
341 break;
342
343 /*
344 * Allocate a peripheral instance for
345 * this device and start the probe
346 * process.
347 */
348 status = cam_periph_alloc(chregister, choninvalidate,
349 chcleanup, chstart, "ch",
350 CAM_PERIPH_BIO, path,
351 chasync, AC_FOUND_DEVICE, cgd);
352
353 if (status != CAM_REQ_CMP
354 && status != CAM_REQ_INPROG)
355 printf("chasync: Unable to probe new device "
356 "due to status 0x%x\n", status);
357
358 break;
359 }
360 default:
361 cam_periph_async(periph, code, path, arg);
362 break;
363 }
364 }
365
366 static cam_status
chregister(struct cam_periph * periph,void * arg)367 chregister(struct cam_periph *periph, void *arg)
368 {
369 struct ch_softc *softc;
370 struct ccb_getdev *cgd;
371 struct ccb_pathinq cpi;
372 struct make_dev_args args;
373 int error;
374
375 cgd = (struct ccb_getdev *)arg;
376 if (cgd == NULL) {
377 printf("chregister: no getdev CCB, can't register device\n");
378 return(CAM_REQ_CMP_ERR);
379 }
380
381 softc = (struct ch_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
382
383 if (softc == NULL) {
384 printf("chregister: Unable to probe new device. "
385 "Unable to allocate softc\n");
386 return(CAM_REQ_CMP_ERR);
387 }
388
389 bzero(softc, sizeof(*softc));
390 softc->state = CH_STATE_PROBE;
391 periph->softc = softc;
392 softc->quirks = CH_Q_NONE;
393
394 /*
395 * The DVCID and CURDATA bits were not introduced until the SMC
396 * spec. If this device claims SCSI-2 or earlier support, then it
397 * very likely does not support these bits.
398 */
399 if (cgd->inq_data.version <= SCSI_REV_2)
400 softc->quirks |= CH_Q_NO_DVCID;
401
402 xpt_path_inq(&cpi, periph->path);
403
404 /*
405 * Changers don't have a blocksize, and obviously don't support
406 * tagged queueing.
407 */
408 cam_periph_unlock(periph);
409 softc->device_stats = devstat_new_entry("ch",
410 periph->unit_number, 0,
411 DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS,
412 SID_TYPE(&cgd->inq_data) |
413 XPORT_DEVSTAT_TYPE(cpi.transport),
414 DEVSTAT_PRIORITY_OTHER);
415
416 /*
417 * Acquire a reference to the periph before we create the devfs
418 * instance for it. We'll release this reference once the devfs
419 * instance has been freed.
420 */
421 if (cam_periph_acquire(periph) != 0) {
422 xpt_print(periph->path, "%s: lost periph during "
423 "registration!\n", __func__);
424 cam_periph_lock(periph);
425 return (CAM_REQ_CMP_ERR);
426 }
427
428 /* Register the device */
429 make_dev_args_init(&args);
430 args.mda_devsw = &ch_cdevsw;
431 args.mda_unit = periph->unit_number;
432 args.mda_uid = UID_ROOT;
433 args.mda_gid = GID_OPERATOR;
434 args.mda_mode = 0600;
435 args.mda_si_drv1 = periph;
436 error = make_dev_s(&args, &softc->dev, "%s%d", periph->periph_name,
437 periph->unit_number);
438 cam_periph_lock(periph);
439 if (error != 0) {
440 cam_periph_release_locked(periph);
441 return (CAM_REQ_CMP_ERR);
442 }
443
444 /*
445 * Add an async callback so that we get
446 * notified if this device goes away.
447 */
448 xpt_register_async(AC_LOST_DEVICE, chasync, periph, periph->path);
449
450 /*
451 * Lock this periph until we are setup.
452 * This first call can't block
453 */
454 (void)cam_periph_hold(periph, PRIBIO);
455 xpt_schedule(periph, CAM_PRIORITY_DEV);
456
457 return(CAM_REQ_CMP);
458 }
459
460 static int
chopen(struct cdev * dev,int flags,int fmt,struct thread * td)461 chopen(struct cdev *dev, int flags, int fmt, struct thread *td)
462 {
463 struct cam_periph *periph;
464 struct ch_softc *softc;
465 int error;
466
467 periph = (struct cam_periph *)dev->si_drv1;
468 if (cam_periph_acquire(periph) != 0)
469 return (ENXIO);
470
471 softc = (struct ch_softc *)periph->softc;
472
473 cam_periph_lock(periph);
474
475 if (softc->flags & CH_FLAG_INVALID) {
476 cam_periph_release_locked(periph);
477 cam_periph_unlock(periph);
478 return(ENXIO);
479 }
480
481 if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
482 cam_periph_unlock(periph);
483 cam_periph_release(periph);
484 return (error);
485 }
486
487 /*
488 * Load information about this changer device into the softc.
489 */
490 if ((error = chgetparams(periph)) != 0) {
491 cam_periph_unhold(periph);
492 cam_periph_release_locked(periph);
493 cam_periph_unlock(periph);
494 return(error);
495 }
496
497 cam_periph_unhold(periph);
498
499 softc->open_count++;
500
501 cam_periph_unlock(periph);
502
503 return(error);
504 }
505
506 static int
chclose(struct cdev * dev,int flag,int fmt,struct thread * td)507 chclose(struct cdev *dev, int flag, int fmt, struct thread *td)
508 {
509 struct cam_periph *periph;
510 struct ch_softc *softc;
511 struct mtx *mtx;
512
513 periph = (struct cam_periph *)dev->si_drv1;
514 mtx = cam_periph_mtx(periph);
515 mtx_lock(mtx);
516
517 softc = (struct ch_softc *)periph->softc;
518 softc->open_count--;
519
520 cam_periph_release_locked(periph);
521
522 /*
523 * We reference the lock directly here, instead of using
524 * cam_periph_unlock(). The reason is that the call to
525 * cam_periph_release_locked() above could result in the periph
526 * getting freed. If that is the case, dereferencing the periph
527 * with a cam_periph_unlock() call would cause a page fault.
528 *
529 * cam_periph_release() avoids this problem using the same method,
530 * but we're manually acquiring and dropping the lock here to
531 * protect the open count and avoid another lock acquisition and
532 * release.
533 */
534 mtx_unlock(mtx);
535
536 return(0);
537 }
538
539 static void
chstart(struct cam_periph * periph,union ccb * start_ccb)540 chstart(struct cam_periph *periph, union ccb *start_ccb)
541 {
542 struct ch_softc *softc;
543
544 softc = (struct ch_softc *)periph->softc;
545
546 switch (softc->state) {
547 case CH_STATE_NORMAL:
548 {
549 xpt_release_ccb(start_ccb);
550 break;
551 }
552 case CH_STATE_PROBE:
553 {
554 int mode_buffer_len;
555 void *mode_buffer;
556
557 /*
558 * Include the block descriptor when calculating the mode
559 * buffer length,
560 */
561 mode_buffer_len = sizeof(struct scsi_mode_header_6) +
562 sizeof(struct scsi_mode_blk_desc) +
563 sizeof(struct page_element_address_assignment);
564
565 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT);
566
567 if (mode_buffer == NULL) {
568 printf("chstart: couldn't malloc mode sense data\n");
569 break;
570 }
571 bzero(mode_buffer, mode_buffer_len);
572
573 /*
574 * Get the element address assignment page.
575 */
576 scsi_mode_sense(&start_ccb->csio,
577 /* retries */ 1,
578 /* cbfcnp */ chdone,
579 /* tag_action */ MSG_SIMPLE_Q_TAG,
580 /* dbd */ (softc->quirks & CH_Q_NO_DBD) ?
581 FALSE : TRUE,
582 /* pc */ SMS_PAGE_CTRL_CURRENT,
583 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE,
584 /* param_buf */ (u_int8_t *)mode_buffer,
585 /* param_len */ mode_buffer_len,
586 /* sense_len */ SSD_FULL_SIZE,
587 /* timeout */ CH_TIMEOUT_MODE_SENSE);
588
589 start_ccb->ccb_h.ccb_bp = NULL;
590 start_ccb->ccb_h.ccb_state = CH_CCB_PROBE;
591 xpt_action(start_ccb);
592 break;
593 }
594 }
595 }
596
597 static void
chdone(struct cam_periph * periph,union ccb * done_ccb)598 chdone(struct cam_periph *periph, union ccb *done_ccb)
599 {
600 struct ch_softc *softc;
601 struct ccb_scsiio *csio;
602
603 softc = (struct ch_softc *)periph->softc;
604 csio = &done_ccb->csio;
605
606 switch(done_ccb->ccb_h.ccb_state) {
607 case CH_CCB_PROBE:
608 {
609 struct scsi_mode_header_6 *mode_header;
610 struct page_element_address_assignment *ea;
611 char announce_buf[80];
612
613 mode_header = (struct scsi_mode_header_6 *)csio->data_ptr;
614
615 ea = (struct page_element_address_assignment *)
616 find_mode_page_6(mode_header);
617
618 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){
619
620 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea);
621 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte);
622 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea);
623 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse);
624 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea);
625 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee);
626 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea);
627 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte);
628 softc->sc_picker = softc->sc_firsts[CHET_MT];
629
630 #define PLURAL(c) (c) == 1 ? "" : "s"
631 snprintf(announce_buf, sizeof(announce_buf),
632 "%d slot%s, %d drive%s, "
633 "%d picker%s, %d portal%s",
634 softc->sc_counts[CHET_ST],
635 PLURAL(softc->sc_counts[CHET_ST]),
636 softc->sc_counts[CHET_DT],
637 PLURAL(softc->sc_counts[CHET_DT]),
638 softc->sc_counts[CHET_MT],
639 PLURAL(softc->sc_counts[CHET_MT]),
640 softc->sc_counts[CHET_IE],
641 PLURAL(softc->sc_counts[CHET_IE]));
642 #undef PLURAL
643 if (announce_buf[0] != '\0') {
644 xpt_announce_periph(periph, announce_buf);
645 xpt_announce_quirks(periph, softc->quirks,
646 CH_Q_BIT_STRING);
647 }
648 } else {
649 int error;
650
651 error = cherror(done_ccb, CAM_RETRY_SELTO,
652 SF_RETRY_UA | SF_NO_PRINT);
653 /*
654 * Retry any UNIT ATTENTION type errors. They
655 * are expected at boot.
656 */
657 if (error == ERESTART) {
658 /*
659 * A retry was scheduled, so
660 * just return.
661 */
662 return;
663 } else if (error != 0) {
664 struct scsi_mode_sense_6 *sms;
665 int frozen, retry_scheduled;
666
667 sms = (struct scsi_mode_sense_6 *)
668 done_ccb->csio.cdb_io.cdb_bytes;
669 frozen = (done_ccb->ccb_h.status &
670 CAM_DEV_QFRZN) != 0;
671
672 /*
673 * Check to see if block descriptors were
674 * disabled. Some devices don't like that.
675 * We're taking advantage of the fact that
676 * the first few bytes of the 6 and 10 byte
677 * mode sense commands are the same. If
678 * block descriptors were disabled, enable
679 * them and re-send the command.
680 */
681 if ((sms->byte2 & SMS_DBD) != 0 &&
682 (periph->flags & CAM_PERIPH_INVALID) == 0) {
683 sms->byte2 &= ~SMS_DBD;
684 xpt_action(done_ccb);
685 softc->quirks |= CH_Q_NO_DBD;
686 retry_scheduled = 1;
687 } else
688 retry_scheduled = 0;
689
690 /* Don't wedge this device's queue */
691 if (frozen)
692 cam_release_devq(done_ccb->ccb_h.path,
693 /*relsim_flags*/0,
694 /*reduction*/0,
695 /*timeout*/0,
696 /*getcount_only*/0);
697
698 if (retry_scheduled)
699 return;
700
701 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK)
702 == CAM_SCSI_STATUS_ERROR)
703 scsi_sense_print(&done_ccb->csio);
704 else {
705 xpt_print(periph->path,
706 "got CAM status %#x\n",
707 done_ccb->ccb_h.status);
708 }
709 xpt_print(periph->path, "fatal error, failed "
710 "to attach to device\n");
711
712 cam_periph_invalidate(periph);
713 }
714 }
715 softc->state = CH_STATE_NORMAL;
716 free(mode_header, M_SCSICH);
717 /*
718 * Since our peripheral may be invalidated by an error
719 * above or an external event, we must release our CCB
720 * before releasing the probe lock on the peripheral.
721 * The peripheral will only go away once the last lock
722 * is removed, and we need it around for the CCB release
723 * operation.
724 */
725 xpt_release_ccb(done_ccb);
726 cam_periph_unhold(periph);
727 return;
728 }
729 default:
730 break;
731 }
732 xpt_release_ccb(done_ccb);
733 }
734
735 static int
cherror(union ccb * ccb,u_int32_t cam_flags,u_int32_t sense_flags)736 cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
737 {
738
739 return (cam_periph_error(ccb, cam_flags, sense_flags));
740 }
741
742 static int
chioctl(struct cdev * dev,u_long cmd,caddr_t addr,int flag,struct thread * td)743 chioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
744 {
745 struct cam_periph *periph;
746 struct ch_softc *softc;
747 int error;
748
749 periph = (struct cam_periph *)dev->si_drv1;
750 cam_periph_lock(periph);
751 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n"));
752
753 softc = (struct ch_softc *)periph->softc;
754
755 error = 0;
756
757 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
758 ("trying to do ioctl %#lx\n", cmd));
759
760 /*
761 * If this command can change the device's state, we must
762 * have the device open for writing.
763 */
764 switch (cmd) {
765 case CHIOGPICKER:
766 case CHIOGPARAMS:
767 case OCHIOGSTATUS:
768 case CHIOGSTATUS:
769 break;
770
771 default:
772 if ((flag & FWRITE) == 0) {
773 cam_periph_unlock(periph);
774 return (EBADF);
775 }
776 }
777
778 switch (cmd) {
779 case CHIOMOVE:
780 error = chmove(periph, (struct changer_move *)addr);
781 break;
782
783 case CHIOEXCHANGE:
784 error = chexchange(periph, (struct changer_exchange *)addr);
785 break;
786
787 case CHIOPOSITION:
788 error = chposition(periph, (struct changer_position *)addr);
789 break;
790
791 case CHIOGPICKER:
792 *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT];
793 break;
794
795 case CHIOSPICKER:
796 {
797 int new_picker = *(int *)addr;
798
799 if (new_picker > (softc->sc_counts[CHET_MT] - 1)) {
800 error = EINVAL;
801 break;
802 }
803 softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker;
804 break;
805 }
806 case CHIOGPARAMS:
807 {
808 struct changer_params *cp = (struct changer_params *)addr;
809
810 cp->cp_npickers = softc->sc_counts[CHET_MT];
811 cp->cp_nslots = softc->sc_counts[CHET_ST];
812 cp->cp_nportals = softc->sc_counts[CHET_IE];
813 cp->cp_ndrives = softc->sc_counts[CHET_DT];
814 break;
815 }
816 case CHIOIELEM:
817 error = chielem(periph, *(unsigned int *)addr);
818 break;
819
820 case OCHIOGSTATUS:
821 {
822 error = chgetelemstatus(periph, SCSI_REV_2, cmd,
823 (struct changer_element_status_request *)addr);
824 break;
825 }
826
827 case CHIOGSTATUS:
828 {
829 int scsi_version;
830
831 scsi_version = chscsiversion(periph);
832 if (scsi_version >= SCSI_REV_0) {
833 error = chgetelemstatus(periph, scsi_version, cmd,
834 (struct changer_element_status_request *)addr);
835 }
836 else { /* unable to determine the SCSI version */
837 cam_periph_unlock(periph);
838 return (ENXIO);
839 }
840 break;
841 }
842
843 case CHIOSETVOLTAG:
844 {
845 error = chsetvoltag(periph,
846 (struct changer_set_voltag_request *) addr);
847 break;
848 }
849
850 /* Implement prevent/allow? */
851
852 default:
853 error = cam_periph_ioctl(periph, cmd, addr, cherror);
854 break;
855 }
856
857 cam_periph_unlock(periph);
858 return (error);
859 }
860
861 static int
chmove(struct cam_periph * periph,struct changer_move * cm)862 chmove(struct cam_periph *periph, struct changer_move *cm)
863 {
864 struct ch_softc *softc;
865 u_int16_t fromelem, toelem;
866 union ccb *ccb;
867 int error;
868
869 error = 0;
870 softc = (struct ch_softc *)periph->softc;
871
872 /*
873 * Check arguments.
874 */
875 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT))
876 return (EINVAL);
877 if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) ||
878 (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1)))
879 return (ENODEV);
880
881 /*
882 * Check the request against the changer's capabilities.
883 */
884 if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0)
885 return (ENODEV);
886
887 /*
888 * Calculate the source and destination elements.
889 */
890 fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit;
891 toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit;
892
893 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
894
895 scsi_move_medium(&ccb->csio,
896 /* retries */ 1,
897 /* cbfcnp */ chdone,
898 /* tag_action */ MSG_SIMPLE_Q_TAG,
899 /* tea */ softc->sc_picker,
900 /* src */ fromelem,
901 /* dst */ toelem,
902 /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE,
903 /* sense_len */ SSD_FULL_SIZE,
904 /* timeout */ CH_TIMEOUT_MOVE_MEDIUM);
905
906 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO,
907 /*sense_flags*/ SF_RETRY_UA,
908 softc->device_stats);
909
910 xpt_release_ccb(ccb);
911
912 return(error);
913 }
914
915 static int
chexchange(struct cam_periph * periph,struct changer_exchange * ce)916 chexchange(struct cam_periph *periph, struct changer_exchange *ce)
917 {
918 struct ch_softc *softc;
919 u_int16_t src, dst1, dst2;
920 union ccb *ccb;
921 int error;
922
923 error = 0;
924 softc = (struct ch_softc *)periph->softc;
925 /*
926 * Check arguments.
927 */
928 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) ||
929 (ce->ce_sdsttype > CHET_DT))
930 return (EINVAL);
931 if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) ||
932 (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) ||
933 (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1)))
934 return (ENODEV);
935
936 /*
937 * Check the request against the changer's capabilities.
938 */
939 if (((softc->sc_exchangemask[ce->ce_srctype] &
940 (1 << ce->ce_fdsttype)) == 0) ||
941 ((softc->sc_exchangemask[ce->ce_fdsttype] &
942 (1 << ce->ce_sdsttype)) == 0))
943 return (ENODEV);
944
945 /*
946 * Calculate the source and destination elements.
947 */
948 src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit;
949 dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit;
950 dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit;
951
952 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
953
954 scsi_exchange_medium(&ccb->csio,
955 /* retries */ 1,
956 /* cbfcnp */ chdone,
957 /* tag_action */ MSG_SIMPLE_Q_TAG,
958 /* tea */ softc->sc_picker,
959 /* src */ src,
960 /* dst1 */ dst1,
961 /* dst2 */ dst2,
962 /* invert1 */ (ce->ce_flags & CE_INVERT1) ?
963 TRUE : FALSE,
964 /* invert2 */ (ce->ce_flags & CE_INVERT2) ?
965 TRUE : FALSE,
966 /* sense_len */ SSD_FULL_SIZE,
967 /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM);
968
969 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO,
970 /*sense_flags*/ SF_RETRY_UA,
971 softc->device_stats);
972
973 xpt_release_ccb(ccb);
974
975 return(error);
976 }
977
978 static int
chposition(struct cam_periph * periph,struct changer_position * cp)979 chposition(struct cam_periph *periph, struct changer_position *cp)
980 {
981 struct ch_softc *softc;
982 u_int16_t dst;
983 union ccb *ccb;
984 int error;
985
986 error = 0;
987 softc = (struct ch_softc *)periph->softc;
988
989 /*
990 * Check arguments.
991 */
992 if (cp->cp_type > CHET_DT)
993 return (EINVAL);
994 if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1))
995 return (ENODEV);
996
997 /*
998 * Calculate the destination element.
999 */
1000 dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit;
1001
1002 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1003
1004 scsi_position_to_element(&ccb->csio,
1005 /* retries */ 1,
1006 /* cbfcnp */ chdone,
1007 /* tag_action */ MSG_SIMPLE_Q_TAG,
1008 /* tea */ softc->sc_picker,
1009 /* dst */ dst,
1010 /* invert */ (cp->cp_flags & CP_INVERT) ?
1011 TRUE : FALSE,
1012 /* sense_len */ SSD_FULL_SIZE,
1013 /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT);
1014
1015 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1016 /*sense_flags*/ SF_RETRY_UA,
1017 softc->device_stats);
1018
1019 xpt_release_ccb(ccb);
1020
1021 return(error);
1022 }
1023
1024 /*
1025 * Copy a volume tag to a volume_tag struct, converting SCSI byte order
1026 * to host native byte order in the volume serial number. The volume
1027 * label as returned by the changer is transferred to user mode as
1028 * nul-terminated string. Volume labels are truncated at the first
1029 * space, as suggested by SCSI-2.
1030 */
1031 static void
copy_voltag(struct changer_voltag * uvoltag,struct volume_tag * voltag)1032 copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag)
1033 {
1034 int i;
1035 for (i=0; i<CH_VOLTAG_MAXLEN; i++) {
1036 char c = voltag->vif[i];
1037 if (c && c != ' ')
1038 uvoltag->cv_volid[i] = c;
1039 else
1040 break;
1041 }
1042 uvoltag->cv_serial = scsi_2btoul(voltag->vsn);
1043 }
1044
1045 /*
1046 * Copy an element status descriptor to a user-mode
1047 * changer_element_status structure.
1048 */
1049 static void
copy_element_status(struct ch_softc * softc,u_int16_t flags,struct read_element_status_descriptor * desc,struct changer_element_status * ces,int scsi_version)1050 copy_element_status(struct ch_softc *softc,
1051 u_int16_t flags,
1052 struct read_element_status_descriptor *desc,
1053 struct changer_element_status *ces,
1054 int scsi_version)
1055 {
1056 u_int16_t eaddr = scsi_2btoul(desc->eaddr);
1057 u_int16_t et;
1058 struct volume_tag *pvol_tag = NULL, *avol_tag = NULL;
1059 struct read_element_status_device_id *devid = NULL;
1060
1061 ces->ces_int_addr = eaddr;
1062 /* set up logical address in element status */
1063 for (et = CHET_MT; et <= CHET_DT; et++) {
1064 if ((softc->sc_firsts[et] <= eaddr)
1065 && ((softc->sc_firsts[et] + softc->sc_counts[et])
1066 > eaddr)) {
1067 ces->ces_addr = eaddr - softc->sc_firsts[et];
1068 ces->ces_type = et;
1069 break;
1070 }
1071 }
1072
1073 ces->ces_flags = desc->flags1;
1074
1075 ces->ces_sensecode = desc->sense_code;
1076 ces->ces_sensequal = desc->sense_qual;
1077
1078 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT)
1079 ces->ces_flags |= CES_INVERT;
1080
1081 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) {
1082 eaddr = scsi_2btoul(desc->ssea);
1083
1084 /* convert source address to logical format */
1085 for (et = CHET_MT; et <= CHET_DT; et++) {
1086 if ((softc->sc_firsts[et] <= eaddr)
1087 && ((softc->sc_firsts[et] + softc->sc_counts[et])
1088 > eaddr)) {
1089 ces->ces_source_addr =
1090 eaddr - softc->sc_firsts[et];
1091 ces->ces_source_type = et;
1092 ces->ces_flags |= CES_SOURCE_VALID;
1093 break;
1094 }
1095 }
1096
1097 if (!(ces->ces_flags & CES_SOURCE_VALID))
1098 printf("ch: warning: could not map element source "
1099 "address %ud to a valid element type\n",
1100 eaddr);
1101 }
1102
1103 /*
1104 * pvoltag and avoltag are common between SCSI-2 and later versions
1105 */
1106 if (flags & READ_ELEMENT_STATUS_PVOLTAG)
1107 pvol_tag = &desc->voltag_devid.pvoltag;
1108 if (flags & READ_ELEMENT_STATUS_AVOLTAG)
1109 avol_tag = (flags & READ_ELEMENT_STATUS_PVOLTAG) ?
1110 &desc->voltag_devid.voltag[1] :&desc->voltag_devid.pvoltag;
1111 /*
1112 * For SCSI-3 and later, element status can carry designator and
1113 * other information.
1114 */
1115 if (scsi_version >= SCSI_REV_SPC) {
1116 if ((flags & READ_ELEMENT_STATUS_PVOLTAG) ^
1117 (flags & READ_ELEMENT_STATUS_AVOLTAG))
1118 devid = &desc->voltag_devid.pvol_and_devid.devid;
1119 else if (!(flags & READ_ELEMENT_STATUS_PVOLTAG) &&
1120 !(flags & READ_ELEMENT_STATUS_AVOLTAG))
1121 devid = &desc->voltag_devid.devid;
1122 else /* Have both PVOLTAG and AVOLTAG */
1123 devid = &desc->voltag_devid.vol_tags_and_devid.devid;
1124 }
1125
1126 if (pvol_tag)
1127 copy_voltag(&(ces->ces_pvoltag), pvol_tag);
1128 if (avol_tag)
1129 copy_voltag(&(ces->ces_pvoltag), avol_tag);
1130 if (devid != NULL) {
1131 if (devid->designator_length > 0) {
1132 bcopy((void *)devid->designator,
1133 (void *)ces->ces_designator,
1134 devid->designator_length);
1135 ces->ces_designator_length = devid->designator_length;
1136 /*
1137 * Make sure we are always NUL terminated. The
1138 * This won't matter for the binary code set,
1139 * since the user will only pay attention to the
1140 * length field.
1141 */
1142 ces->ces_designator[devid->designator_length]= '\0';
1143 }
1144 if (devid->piv_assoc_designator_type &
1145 READ_ELEMENT_STATUS_PIV_SET) {
1146 ces->ces_flags |= CES_PIV;
1147 ces->ces_protocol_id =
1148 READ_ELEMENT_STATUS_PROTOCOL_ID(
1149 devid->prot_code_set);
1150 }
1151 ces->ces_code_set =
1152 READ_ELEMENT_STATUS_CODE_SET(devid->prot_code_set);
1153 ces->ces_assoc = READ_ELEMENT_STATUS_ASSOCIATION(
1154 devid->piv_assoc_designator_type);
1155 ces->ces_designator_type = READ_ELEMENT_STATUS_DESIGNATOR_TYPE(
1156 devid->piv_assoc_designator_type);
1157 } else if (scsi_version > SCSI_REV_2) {
1158 /* SCSI-SPC and No devid, no designator */
1159 ces->ces_designator_length = 0;
1160 ces->ces_designator[0] = '\0';
1161 ces->ces_protocol_id = CES_PROTOCOL_ID_FCP_4;
1162 }
1163
1164 if (scsi_version <= SCSI_REV_2) {
1165 if (desc->dt_or_obsolete.scsi_2.dt_scsi_flags &
1166 READ_ELEMENT_STATUS_DT_IDVALID) {
1167 ces->ces_flags |= CES_SCSIID_VALID;
1168 ces->ces_scsi_id =
1169 desc->dt_or_obsolete.scsi_2.dt_scsi_addr;
1170 }
1171
1172 if (desc->dt_or_obsolete.scsi_2.dt_scsi_addr &
1173 READ_ELEMENT_STATUS_DT_LUVALID) {
1174 ces->ces_flags |= CES_LUN_VALID;
1175 ces->ces_scsi_lun =
1176 desc->dt_or_obsolete.scsi_2.dt_scsi_flags &
1177 READ_ELEMENT_STATUS_DT_LUNMASK;
1178 }
1179 }
1180 }
1181
1182 static int
chgetelemstatus(struct cam_periph * periph,int scsi_version,u_long cmd,struct changer_element_status_request * cesr)1183 chgetelemstatus(struct cam_periph *periph, int scsi_version, u_long cmd,
1184 struct changer_element_status_request *cesr)
1185 {
1186 struct read_element_status_header *st_hdr;
1187 struct read_element_status_page_header *pg_hdr;
1188 struct read_element_status_descriptor *desc;
1189 caddr_t data = NULL;
1190 size_t size, desclen;
1191 u_int avail, i;
1192 int curdata, dvcid, sense_flags;
1193 int try_no_dvcid = 0;
1194 struct changer_element_status *user_data = NULL;
1195 struct ch_softc *softc;
1196 union ccb *ccb;
1197 int chet = cesr->cesr_element_type;
1198 int error = 0;
1199 int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0;
1200
1201 softc = (struct ch_softc *)periph->softc;
1202
1203 /* perform argument checking */
1204
1205 /*
1206 * Perform a range check on the cesr_element_{base,count}
1207 * request argument fields.
1208 */
1209 if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0
1210 || (cesr->cesr_element_base + cesr->cesr_element_count)
1211 > softc->sc_counts[chet])
1212 return (EINVAL);
1213
1214 /*
1215 * Request one descriptor for the given element type. This
1216 * is used to determine the size of the descriptor so that
1217 * we can allocate enough storage for all of them. We assume
1218 * that the first one can fit into 1k.
1219 */
1220 cam_periph_unlock(periph);
1221 data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK);
1222
1223 cam_periph_lock(periph);
1224 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1225
1226 sense_flags = SF_RETRY_UA;
1227 if (softc->quirks & CH_Q_NO_DVCID) {
1228 dvcid = 0;
1229 curdata = 0;
1230 } else {
1231 dvcid = 1;
1232 curdata = 1;
1233 /*
1234 * Don't print anything for an Illegal Request, because
1235 * these flags can cause some changers to complain. We'll
1236 * retry without them if we get an error.
1237 */
1238 sense_flags |= SF_QUIET_IR;
1239 }
1240
1241 retry_einval:
1242
1243 scsi_read_element_status(&ccb->csio,
1244 /* retries */ 1,
1245 /* cbfcnp */ chdone,
1246 /* tag_action */ MSG_SIMPLE_Q_TAG,
1247 /* voltag */ want_voltags,
1248 /* sea */ softc->sc_firsts[chet],
1249 /* curdata */ curdata,
1250 /* dvcid */ dvcid,
1251 /* count */ 1,
1252 /* data_ptr */ data,
1253 /* dxfer_len */ 1024,
1254 /* sense_len */ SSD_FULL_SIZE,
1255 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS);
1256
1257 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1258 /*sense_flags*/ sense_flags,
1259 softc->device_stats);
1260
1261 /*
1262 * An Illegal Request sense key (only used if there is no asc/ascq)
1263 * or 0x24,0x00 for an ASC/ASCQ both map to EINVAL. If dvcid or
1264 * curdata are set (we set both or neither), try turning them off
1265 * and see if the command is successful.
1266 */
1267 if ((error == EINVAL)
1268 && (dvcid || curdata)) {
1269 dvcid = 0;
1270 curdata = 0;
1271 error = 0;
1272 /* At this point we want to report any Illegal Request */
1273 sense_flags &= ~SF_QUIET_IR;
1274 try_no_dvcid = 1;
1275 goto retry_einval;
1276 }
1277
1278 /*
1279 * In this case, we tried a read element status with dvcid and
1280 * curdata set, and it failed. We retried without those bits, and
1281 * it succeeded. Suggest to the user that he set a quirk, so we
1282 * don't go through the retry process the first time in the future.
1283 * This should only happen on changers that claim SCSI-3 or higher,
1284 * but don't support these bits.
1285 */
1286 if ((try_no_dvcid != 0)
1287 && (error == 0))
1288 softc->quirks |= CH_Q_NO_DVCID;
1289
1290 if (error)
1291 goto done;
1292 cam_periph_unlock(periph);
1293
1294 st_hdr = (struct read_element_status_header *)data;
1295 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr +
1296 sizeof(struct read_element_status_header));
1297 desclen = scsi_2btoul(pg_hdr->edl);
1298
1299 size = sizeof(struct read_element_status_header) +
1300 sizeof(struct read_element_status_page_header) +
1301 (desclen * cesr->cesr_element_count);
1302 /*
1303 * Reallocate storage for descriptors and get them from the
1304 * device.
1305 */
1306 free(data, M_DEVBUF);
1307 data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK);
1308
1309 cam_periph_lock(periph);
1310 scsi_read_element_status(&ccb->csio,
1311 /* retries */ 1,
1312 /* cbfcnp */ chdone,
1313 /* tag_action */ MSG_SIMPLE_Q_TAG,
1314 /* voltag */ want_voltags,
1315 /* sea */ softc->sc_firsts[chet]
1316 + cesr->cesr_element_base,
1317 /* curdata */ curdata,
1318 /* dvcid */ dvcid,
1319 /* count */ cesr->cesr_element_count,
1320 /* data_ptr */ data,
1321 /* dxfer_len */ size,
1322 /* sense_len */ SSD_FULL_SIZE,
1323 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS);
1324
1325 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1326 /*sense_flags*/ SF_RETRY_UA,
1327 softc->device_stats);
1328
1329 if (error)
1330 goto done;
1331 cam_periph_unlock(periph);
1332
1333 /*
1334 * Fill in the user status array.
1335 */
1336 st_hdr = (struct read_element_status_header *)data;
1337 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr +
1338 sizeof(struct read_element_status_header));
1339 avail = scsi_2btoul(st_hdr->count);
1340
1341 if (avail != cesr->cesr_element_count) {
1342 xpt_print(periph->path,
1343 "warning, READ ELEMENT STATUS avail != count\n");
1344 }
1345
1346 user_data = (struct changer_element_status *)
1347 malloc(avail * sizeof(struct changer_element_status),
1348 M_DEVBUF, M_WAITOK | M_ZERO);
1349
1350 desc = (struct read_element_status_descriptor *)((uintptr_t)data +
1351 sizeof(struct read_element_status_header) +
1352 sizeof(struct read_element_status_page_header));
1353 /*
1354 * Set up the individual element status structures
1355 */
1356 for (i = 0; i < avail; ++i) {
1357 struct changer_element_status *ces;
1358
1359 /*
1360 * In the changer_element_status structure, fields from
1361 * the beginning to the field of ces_scsi_lun are common
1362 * between SCSI-2 and SCSI-3, while all the rest are new
1363 * from SCSI-3. In order to maintain backward compatibility
1364 * of the chio command, the ces pointer, below, is computed
1365 * such that it lines up with the structure boundary
1366 * corresponding to the SCSI version.
1367 */
1368 ces = cmd == OCHIOGSTATUS ?
1369 (struct changer_element_status *)
1370 ((unsigned char *)user_data + i *
1371 (offsetof(struct changer_element_status,ces_scsi_lun)+1)):
1372 &user_data[i];
1373
1374 copy_element_status(softc, pg_hdr->flags, desc,
1375 ces, scsi_version);
1376
1377 desc = (struct read_element_status_descriptor *)
1378 ((unsigned char *)desc + desclen);
1379 }
1380
1381 /* Copy element status structures out to userspace. */
1382 if (cmd == OCHIOGSTATUS)
1383 error = copyout(user_data,
1384 cesr->cesr_element_status,
1385 avail* (offsetof(struct changer_element_status,
1386 ces_scsi_lun) + 1));
1387 else
1388 error = copyout(user_data,
1389 cesr->cesr_element_status,
1390 avail * sizeof(struct changer_element_status));
1391
1392 cam_periph_lock(periph);
1393
1394 done:
1395 xpt_release_ccb(ccb);
1396
1397 if (data != NULL)
1398 free(data, M_DEVBUF);
1399 if (user_data != NULL)
1400 free(user_data, M_DEVBUF);
1401
1402 return (error);
1403 }
1404
1405 static int
chielem(struct cam_periph * periph,unsigned int timeout)1406 chielem(struct cam_periph *periph,
1407 unsigned int timeout)
1408 {
1409 union ccb *ccb;
1410 struct ch_softc *softc;
1411 int error;
1412
1413 if (!timeout) {
1414 timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS;
1415 } else {
1416 timeout *= 1000;
1417 }
1418
1419 error = 0;
1420 softc = (struct ch_softc *)periph->softc;
1421
1422 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1423
1424 scsi_initialize_element_status(&ccb->csio,
1425 /* retries */ 1,
1426 /* cbfcnp */ chdone,
1427 /* tag_action */ MSG_SIMPLE_Q_TAG,
1428 /* sense_len */ SSD_FULL_SIZE,
1429 /* timeout */ timeout);
1430
1431 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1432 /*sense_flags*/ SF_RETRY_UA,
1433 softc->device_stats);
1434
1435 xpt_release_ccb(ccb);
1436
1437 return(error);
1438 }
1439
1440 static int
chsetvoltag(struct cam_periph * periph,struct changer_set_voltag_request * csvr)1441 chsetvoltag(struct cam_periph *periph,
1442 struct changer_set_voltag_request *csvr)
1443 {
1444 union ccb *ccb;
1445 struct ch_softc *softc;
1446 u_int16_t ea;
1447 u_int8_t sac;
1448 struct scsi_send_volume_tag_parameters ssvtp;
1449 int error;
1450 int i;
1451
1452 error = 0;
1453 softc = (struct ch_softc *)periph->softc;
1454
1455 bzero(&ssvtp, sizeof(ssvtp));
1456 for (i=0; i<sizeof(ssvtp.vitf); i++) {
1457 ssvtp.vitf[i] = ' ';
1458 }
1459
1460 /*
1461 * Check arguments.
1462 */
1463 if (csvr->csvr_type > CHET_DT)
1464 return EINVAL;
1465 if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1))
1466 return ENODEV;
1467
1468 ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr;
1469
1470 if (csvr->csvr_flags & CSVR_ALTERNATE) {
1471 switch (csvr->csvr_flags & CSVR_MODE_MASK) {
1472 case CSVR_MODE_SET:
1473 sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE;
1474 break;
1475 case CSVR_MODE_REPLACE:
1476 sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE;
1477 break;
1478 case CSVR_MODE_CLEAR:
1479 sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE;
1480 break;
1481 default:
1482 error = EINVAL;
1483 goto out;
1484 }
1485 } else {
1486 switch (csvr->csvr_flags & CSVR_MODE_MASK) {
1487 case CSVR_MODE_SET:
1488 sac = SEND_VOLUME_TAG_ASSERT_PRIMARY;
1489 break;
1490 case CSVR_MODE_REPLACE:
1491 sac = SEND_VOLUME_TAG_REPLACE_PRIMARY;
1492 break;
1493 case CSVR_MODE_CLEAR:
1494 sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY;
1495 break;
1496 default:
1497 error = EINVAL;
1498 goto out;
1499 }
1500 }
1501
1502 memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid,
1503 min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf)));
1504 scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn);
1505
1506 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1507
1508 scsi_send_volume_tag(&ccb->csio,
1509 /* retries */ 1,
1510 /* cbfcnp */ chdone,
1511 /* tag_action */ MSG_SIMPLE_Q_TAG,
1512 /* element_address */ ea,
1513 /* send_action_code */ sac,
1514 /* parameters */ &ssvtp,
1515 /* sense_len */ SSD_FULL_SIZE,
1516 /* timeout */ CH_TIMEOUT_SEND_VOLTAG);
1517
1518 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1519 /*sense_flags*/ SF_RETRY_UA,
1520 softc->device_stats);
1521
1522 xpt_release_ccb(ccb);
1523
1524 out:
1525 return error;
1526 }
1527
1528 static int
chgetparams(struct cam_periph * periph)1529 chgetparams(struct cam_periph *periph)
1530 {
1531 union ccb *ccb;
1532 struct ch_softc *softc;
1533 void *mode_buffer;
1534 int mode_buffer_len;
1535 struct page_element_address_assignment *ea;
1536 struct page_device_capabilities *cap;
1537 int error, from, dbd;
1538 u_int8_t *moves, *exchanges;
1539
1540 error = 0;
1541
1542 softc = (struct ch_softc *)periph->softc;
1543
1544 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1545
1546 /*
1547 * The scsi_mode_sense_data structure is just a convenience
1548 * structure that allows us to easily calculate the worst-case
1549 * storage size of the mode sense buffer.
1550 */
1551 mode_buffer_len = sizeof(struct scsi_mode_sense_data);
1552
1553 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT);
1554
1555 if (mode_buffer == NULL) {
1556 printf("chgetparams: couldn't malloc mode sense data\n");
1557 xpt_release_ccb(ccb);
1558 return(ENOSPC);
1559 }
1560
1561 bzero(mode_buffer, mode_buffer_len);
1562
1563 if (softc->quirks & CH_Q_NO_DBD)
1564 dbd = FALSE;
1565 else
1566 dbd = TRUE;
1567
1568 /*
1569 * Get the element address assignment page.
1570 */
1571 scsi_mode_sense(&ccb->csio,
1572 /* retries */ 1,
1573 /* cbfcnp */ chdone,
1574 /* tag_action */ MSG_SIMPLE_Q_TAG,
1575 /* dbd */ dbd,
1576 /* pc */ SMS_PAGE_CTRL_CURRENT,
1577 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE,
1578 /* param_buf */ (u_int8_t *)mode_buffer,
1579 /* param_len */ mode_buffer_len,
1580 /* sense_len */ SSD_FULL_SIZE,
1581 /* timeout */ CH_TIMEOUT_MODE_SENSE);
1582
1583 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1584 /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT,
1585 softc->device_stats);
1586
1587 if (error) {
1588 if (dbd) {
1589 struct scsi_mode_sense_6 *sms;
1590
1591 sms = (struct scsi_mode_sense_6 *)
1592 ccb->csio.cdb_io.cdb_bytes;
1593
1594 sms->byte2 &= ~SMS_DBD;
1595 error = cam_periph_runccb(ccb, cherror,
1596 /*cam_flags*/ CAM_RETRY_SELTO,
1597 /*sense_flags*/ SF_RETRY_UA,
1598 softc->device_stats);
1599 } else {
1600 /*
1601 * Since we disabled sense printing above, print
1602 * out the sense here since we got an error.
1603 */
1604 scsi_sense_print(&ccb->csio);
1605 }
1606
1607 if (error) {
1608 xpt_print(periph->path,
1609 "chgetparams: error getting element "
1610 "address page\n");
1611 xpt_release_ccb(ccb);
1612 free(mode_buffer, M_SCSICH);
1613 return(error);
1614 }
1615 }
1616
1617 ea = (struct page_element_address_assignment *)
1618 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer);
1619
1620 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea);
1621 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte);
1622 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea);
1623 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse);
1624 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea);
1625 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee);
1626 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea);
1627 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte);
1628
1629 bzero(mode_buffer, mode_buffer_len);
1630
1631 /*
1632 * Now get the device capabilities page.
1633 */
1634 scsi_mode_sense(&ccb->csio,
1635 /* retries */ 1,
1636 /* cbfcnp */ chdone,
1637 /* tag_action */ MSG_SIMPLE_Q_TAG,
1638 /* dbd */ dbd,
1639 /* pc */ SMS_PAGE_CTRL_CURRENT,
1640 /* page */ CH_DEVICE_CAP_PAGE,
1641 /* param_buf */ (u_int8_t *)mode_buffer,
1642 /* param_len */ mode_buffer_len,
1643 /* sense_len */ SSD_FULL_SIZE,
1644 /* timeout */ CH_TIMEOUT_MODE_SENSE);
1645
1646 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1647 /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT,
1648 softc->device_stats);
1649
1650 if (error) {
1651 if (dbd) {
1652 struct scsi_mode_sense_6 *sms;
1653
1654 sms = (struct scsi_mode_sense_6 *)
1655 ccb->csio.cdb_io.cdb_bytes;
1656
1657 sms->byte2 &= ~SMS_DBD;
1658 error = cam_periph_runccb(ccb, cherror,
1659 /*cam_flags*/ CAM_RETRY_SELTO,
1660 /*sense_flags*/ SF_RETRY_UA,
1661 softc->device_stats);
1662 } else {
1663 /*
1664 * Since we disabled sense printing above, print
1665 * out the sense here since we got an error.
1666 */
1667 scsi_sense_print(&ccb->csio);
1668 }
1669
1670 if (error) {
1671 xpt_print(periph->path,
1672 "chgetparams: error getting device "
1673 "capabilities page\n");
1674 xpt_release_ccb(ccb);
1675 free(mode_buffer, M_SCSICH);
1676 return(error);
1677 }
1678 }
1679
1680 xpt_release_ccb(ccb);
1681
1682 cap = (struct page_device_capabilities *)
1683 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer);
1684
1685 bzero(softc->sc_movemask, sizeof(softc->sc_movemask));
1686 bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask));
1687 moves = cap->move_from;
1688 exchanges = cap->exchange_with;
1689 for (from = CHET_MT; from <= CHET_MAX; ++from) {
1690 softc->sc_movemask[from] = moves[from];
1691 softc->sc_exchangemask[from] = exchanges[from];
1692 }
1693
1694 free(mode_buffer, M_SCSICH);
1695
1696 return(error);
1697 }
1698
1699 static int
chscsiversion(struct cam_periph * periph)1700 chscsiversion(struct cam_periph *periph)
1701 {
1702 struct scsi_inquiry_data *inq_data;
1703 struct ccb_getdev *cgd;
1704 int dev_scsi_version;
1705
1706 cam_periph_assert(periph, MA_OWNED);
1707 if ((cgd = (struct ccb_getdev *)xpt_alloc_ccb_nowait()) == NULL)
1708 return (-1);
1709 /*
1710 * Get the device information.
1711 */
1712 xpt_setup_ccb(&cgd->ccb_h,
1713 periph->path,
1714 CAM_PRIORITY_NORMAL);
1715 cgd->ccb_h.func_code = XPT_GDEV_TYPE;
1716 xpt_action((union ccb *)cgd);
1717
1718 if (cgd->ccb_h.status != CAM_REQ_CMP) {
1719 xpt_free_ccb((union ccb *)cgd);
1720 return -1;
1721 }
1722
1723 inq_data = &cgd->inq_data;
1724 dev_scsi_version = inq_data->version;
1725 xpt_free_ccb((union ccb *)cgd);
1726
1727 return dev_scsi_version;
1728 }
1729
1730 void
scsi_move_medium(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,u_int32_t tea,u_int32_t src,u_int32_t dst,int invert,u_int8_t sense_len,u_int32_t timeout)1731 scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries,
1732 void (*cbfcnp)(struct cam_periph *, union ccb *),
1733 u_int8_t tag_action, u_int32_t tea, u_int32_t src,
1734 u_int32_t dst, int invert, u_int8_t sense_len,
1735 u_int32_t timeout)
1736 {
1737 struct scsi_move_medium *scsi_cmd;
1738
1739 scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes;
1740 bzero(scsi_cmd, sizeof(*scsi_cmd));
1741
1742 scsi_cmd->opcode = MOVE_MEDIUM;
1743
1744 scsi_ulto2b(tea, scsi_cmd->tea);
1745 scsi_ulto2b(src, scsi_cmd->src);
1746 scsi_ulto2b(dst, scsi_cmd->dst);
1747
1748 if (invert)
1749 scsi_cmd->invert |= MOVE_MEDIUM_INVERT;
1750
1751 cam_fill_csio(csio,
1752 retries,
1753 cbfcnp,
1754 /*flags*/ CAM_DIR_NONE,
1755 tag_action,
1756 /*data_ptr*/ NULL,
1757 /*dxfer_len*/ 0,
1758 sense_len,
1759 sizeof(*scsi_cmd),
1760 timeout);
1761 }
1762
1763 void
scsi_exchange_medium(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,u_int32_t tea,u_int32_t src,u_int32_t dst1,u_int32_t dst2,int invert1,int invert2,u_int8_t sense_len,u_int32_t timeout)1764 scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries,
1765 void (*cbfcnp)(struct cam_periph *, union ccb *),
1766 u_int8_t tag_action, u_int32_t tea, u_int32_t src,
1767 u_int32_t dst1, u_int32_t dst2, int invert1,
1768 int invert2, u_int8_t sense_len, u_int32_t timeout)
1769 {
1770 struct scsi_exchange_medium *scsi_cmd;
1771
1772 scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes;
1773 bzero(scsi_cmd, sizeof(*scsi_cmd));
1774
1775 scsi_cmd->opcode = EXCHANGE_MEDIUM;
1776
1777 scsi_ulto2b(tea, scsi_cmd->tea);
1778 scsi_ulto2b(src, scsi_cmd->src);
1779 scsi_ulto2b(dst1, scsi_cmd->fdst);
1780 scsi_ulto2b(dst2, scsi_cmd->sdst);
1781
1782 if (invert1)
1783 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1;
1784
1785 if (invert2)
1786 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2;
1787
1788 cam_fill_csio(csio,
1789 retries,
1790 cbfcnp,
1791 /*flags*/ CAM_DIR_NONE,
1792 tag_action,
1793 /*data_ptr*/ NULL,
1794 /*dxfer_len*/ 0,
1795 sense_len,
1796 sizeof(*scsi_cmd),
1797 timeout);
1798 }
1799
1800 void
scsi_position_to_element(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,u_int32_t tea,u_int32_t dst,int invert,u_int8_t sense_len,u_int32_t timeout)1801 scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries,
1802 void (*cbfcnp)(struct cam_periph *, union ccb *),
1803 u_int8_t tag_action, u_int32_t tea, u_int32_t dst,
1804 int invert, u_int8_t sense_len, u_int32_t timeout)
1805 {
1806 struct scsi_position_to_element *scsi_cmd;
1807
1808 scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes;
1809 bzero(scsi_cmd, sizeof(*scsi_cmd));
1810
1811 scsi_cmd->opcode = POSITION_TO_ELEMENT;
1812
1813 scsi_ulto2b(tea, scsi_cmd->tea);
1814 scsi_ulto2b(dst, scsi_cmd->dst);
1815
1816 if (invert)
1817 scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT;
1818
1819 cam_fill_csio(csio,
1820 retries,
1821 cbfcnp,
1822 /*flags*/ CAM_DIR_NONE,
1823 tag_action,
1824 /*data_ptr*/ NULL,
1825 /*dxfer_len*/ 0,
1826 sense_len,
1827 sizeof(*scsi_cmd),
1828 timeout);
1829 }
1830
1831 void
scsi_read_element_status(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int voltag,u_int32_t sea,int curdata,int dvcid,u_int32_t count,u_int8_t * data_ptr,u_int32_t dxfer_len,u_int8_t sense_len,u_int32_t timeout)1832 scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries,
1833 void (*cbfcnp)(struct cam_periph *, union ccb *),
1834 u_int8_t tag_action, int voltag, u_int32_t sea,
1835 int curdata, int dvcid,
1836 u_int32_t count, u_int8_t *data_ptr,
1837 u_int32_t dxfer_len, u_int8_t sense_len,
1838 u_int32_t timeout)
1839 {
1840 struct scsi_read_element_status *scsi_cmd;
1841
1842 scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes;
1843 bzero(scsi_cmd, sizeof(*scsi_cmd));
1844
1845 scsi_cmd->opcode = READ_ELEMENT_STATUS;
1846
1847 scsi_ulto2b(sea, scsi_cmd->sea);
1848 scsi_ulto2b(count, scsi_cmd->count);
1849 scsi_ulto3b(dxfer_len, scsi_cmd->len);
1850 if (dvcid)
1851 scsi_cmd->flags |= READ_ELEMENT_STATUS_DVCID;
1852 if (curdata)
1853 scsi_cmd->flags |= READ_ELEMENT_STATUS_CURDATA;
1854
1855 if (voltag)
1856 scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG;
1857
1858 cam_fill_csio(csio,
1859 retries,
1860 cbfcnp,
1861 /*flags*/ CAM_DIR_IN,
1862 tag_action,
1863 data_ptr,
1864 dxfer_len,
1865 sense_len,
1866 sizeof(*scsi_cmd),
1867 timeout);
1868 }
1869
1870 void
scsi_initialize_element_status(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,u_int8_t sense_len,u_int32_t timeout)1871 scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries,
1872 void (*cbfcnp)(struct cam_periph *, union ccb *),
1873 u_int8_t tag_action, u_int8_t sense_len,
1874 u_int32_t timeout)
1875 {
1876 struct scsi_initialize_element_status *scsi_cmd;
1877
1878 scsi_cmd = (struct scsi_initialize_element_status *)
1879 &csio->cdb_io.cdb_bytes;
1880 bzero(scsi_cmd, sizeof(*scsi_cmd));
1881
1882 scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS;
1883
1884 cam_fill_csio(csio,
1885 retries,
1886 cbfcnp,
1887 /*flags*/ CAM_DIR_NONE,
1888 tag_action,
1889 /* data_ptr */ NULL,
1890 /* dxfer_len */ 0,
1891 sense_len,
1892 sizeof(*scsi_cmd),
1893 timeout);
1894 }
1895
1896 void
scsi_send_volume_tag(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,u_int16_t element_address,u_int8_t send_action_code,struct scsi_send_volume_tag_parameters * parameters,u_int8_t sense_len,u_int32_t timeout)1897 scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries,
1898 void (*cbfcnp)(struct cam_periph *, union ccb *),
1899 u_int8_t tag_action,
1900 u_int16_t element_address,
1901 u_int8_t send_action_code,
1902 struct scsi_send_volume_tag_parameters *parameters,
1903 u_int8_t sense_len, u_int32_t timeout)
1904 {
1905 struct scsi_send_volume_tag *scsi_cmd;
1906
1907 scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes;
1908 bzero(scsi_cmd, sizeof(*scsi_cmd));
1909
1910 scsi_cmd->opcode = SEND_VOLUME_TAG;
1911 scsi_ulto2b(element_address, scsi_cmd->ea);
1912 scsi_cmd->sac = send_action_code;
1913 scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll);
1914
1915 cam_fill_csio(csio,
1916 retries,
1917 cbfcnp,
1918 /*flags*/ CAM_DIR_OUT,
1919 tag_action,
1920 /* data_ptr */ (u_int8_t *) parameters,
1921 sizeof(*parameters),
1922 sense_len,
1923 sizeof(*scsi_cmd),
1924 timeout);
1925 }
1926