FreeBSD/Linux Kernel Cross Reference
sys/cam/scsi/scsi_ch.c
1 /*-
2 * Copyright (c) 1997 Justin T. Gibbs.
3 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions, and the following disclaimer,
11 * without modification, immediately at the beginning of the file.
12 * 2. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 /*
29 * Derived from the NetBSD SCSI changer driver.
30 *
31 * $NetBSD: ch.c,v 1.32 1998/01/12 09:49:12 thorpej Exp $
32 *
33 */
34 /*-
35 * Copyright (c) 1996, 1997 Jason R. Thorpe <thorpej@and.com>
36 * All rights reserved.
37 *
38 * Partially based on an autochanger driver written by Stefan Grefen
39 * and on an autochanger driver written by the Systems Programming Group
40 * at the University of Utah Computer Science Department.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. All advertising materials mentioning features or use of this software
51 * must display the following acknowledgements:
52 * This product includes software developed by Jason R. Thorpe
53 * for And Communications, http://www.and.com/
54 * 4. The name of the author may not be used to endorse or promote products
55 * derived from this software without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
62 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
63 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
64 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
65 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
67 * SUCH DAMAGE.
68 */
69
70 #include <sys/cdefs.h>
71 __FBSDID("$FreeBSD$");
72
73 #include <sys/param.h>
74 #include <sys/queue.h>
75 #include <sys/systm.h>
76 #include <sys/kernel.h>
77 #include <sys/types.h>
78 #include <sys/malloc.h>
79 #include <sys/fcntl.h>
80 #include <sys/conf.h>
81 #include <sys/chio.h>
82 #include <sys/errno.h>
83 #include <sys/devicestat.h>
84
85 #include <cam/cam.h>
86 #include <cam/cam_ccb.h>
87 #include <cam/cam_periph.h>
88 #include <cam/cam_xpt_periph.h>
89 #include <cam/cam_debug.h>
90
91 #include <cam/scsi/scsi_all.h>
92 #include <cam/scsi/scsi_message.h>
93 #include <cam/scsi/scsi_ch.h>
94
95 /*
96 * Timeout definitions for various changer related commands. They may
97 * be too short for some devices (especially the timeout for INITIALIZE
98 * ELEMENT STATUS).
99 */
100
101 static const u_int32_t CH_TIMEOUT_MODE_SENSE = 6000;
102 static const u_int32_t CH_TIMEOUT_MOVE_MEDIUM = 100000;
103 static const u_int32_t CH_TIMEOUT_EXCHANGE_MEDIUM = 100000;
104 static const u_int32_t CH_TIMEOUT_POSITION_TO_ELEMENT = 100000;
105 static const u_int32_t CH_TIMEOUT_READ_ELEMENT_STATUS = 10000;
106 static const u_int32_t CH_TIMEOUT_SEND_VOLTAG = 10000;
107 static const u_int32_t CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS = 500000;
108
109 typedef enum {
110 CH_FLAG_INVALID = 0x001,
111 CH_FLAG_OPEN = 0x002
112 } ch_flags;
113
114 typedef enum {
115 CH_STATE_PROBE,
116 CH_STATE_NORMAL
117 } ch_state;
118
119 typedef enum {
120 CH_CCB_PROBE,
121 CH_CCB_WAITING
122 } ch_ccb_types;
123
124 typedef enum {
125 CH_Q_NONE = 0x00,
126 CH_Q_NO_DBD = 0x01
127 } ch_quirks;
128
129 #define ccb_state ppriv_field0
130 #define ccb_bp ppriv_ptr1
131
132 struct scsi_mode_sense_data {
133 struct scsi_mode_header_6 header;
134 struct scsi_mode_blk_desc blk_desc;
135 union {
136 struct page_element_address_assignment ea;
137 struct page_transport_geometry_parameters tg;
138 struct page_device_capabilities cap;
139 } pages;
140 };
141
142 struct ch_softc {
143 ch_flags flags;
144 ch_state state;
145 ch_quirks quirks;
146 union ccb saved_ccb;
147 struct devstat *device_stats;
148 struct cdev *dev;
149
150 int sc_picker; /* current picker */
151
152 /*
153 * The following information is obtained from the
154 * element address assignment page.
155 */
156 int sc_firsts[CHET_MAX + 1]; /* firsts */
157 int sc_counts[CHET_MAX + 1]; /* counts */
158
159 /*
160 * The following mask defines the legal combinations
161 * of elements for the MOVE MEDIUM command.
162 */
163 u_int8_t sc_movemask[CHET_MAX + 1];
164
165 /*
166 * As above, but for EXCHANGE MEDIUM.
167 */
168 u_int8_t sc_exchangemask[CHET_MAX + 1];
169
170 /*
171 * Quirks; see below. XXX KDM not implemented yet
172 */
173 int sc_settledelay; /* delay for settle */
174 };
175
176 #define CHUNIT(x) (minor((x)))
177
178 static d_open_t chopen;
179 static d_close_t chclose;
180 static d_ioctl_t chioctl;
181 static periph_init_t chinit;
182 static periph_ctor_t chregister;
183 static periph_oninv_t choninvalidate;
184 static periph_dtor_t chcleanup;
185 static periph_start_t chstart;
186 static void chasync(void *callback_arg, u_int32_t code,
187 struct cam_path *path, void *arg);
188 static void chdone(struct cam_periph *periph,
189 union ccb *done_ccb);
190 static int cherror(union ccb *ccb, u_int32_t cam_flags,
191 u_int32_t sense_flags);
192 static int chmove(struct cam_periph *periph,
193 struct changer_move *cm);
194 static int chexchange(struct cam_periph *periph,
195 struct changer_exchange *ce);
196 static int chposition(struct cam_periph *periph,
197 struct changer_position *cp);
198 static int chgetelemstatus(struct cam_periph *periph,
199 struct changer_element_status_request *csr);
200 static int chsetvoltag(struct cam_periph *periph,
201 struct changer_set_voltag_request *csvr);
202 static int chielem(struct cam_periph *periph,
203 unsigned int timeout);
204 static int chgetparams(struct cam_periph *periph);
205
206 static struct periph_driver chdriver =
207 {
208 chinit, "ch",
209 TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0
210 };
211
212 PERIPHDRIVER_DECLARE(ch, chdriver);
213
214 static struct cdevsw ch_cdevsw = {
215 .d_version = D_VERSION,
216 .d_flags = D_NEEDGIANT,
217 .d_open = chopen,
218 .d_close = chclose,
219 .d_ioctl = chioctl,
220 .d_name = "ch",
221 };
222
223 MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers");
224
225 static void
226 chinit(void)
227 {
228 cam_status status;
229 struct cam_path *path;
230
231 /*
232 * Install a global async callback. This callback will
233 * receive async callbacks like "new device found".
234 */
235 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
236 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
237
238 if (status == CAM_REQ_CMP) {
239 struct ccb_setasync csa;
240
241 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
242 csa.ccb_h.func_code = XPT_SASYNC_CB;
243 csa.event_enable = AC_FOUND_DEVICE;
244 csa.callback = chasync;
245 csa.callback_arg = NULL;
246 xpt_action((union ccb *)&csa);
247 status = csa.ccb_h.status;
248 xpt_free_path(path);
249 }
250
251 if (status != CAM_REQ_CMP) {
252 printf("ch: Failed to attach master async callback "
253 "due to status 0x%x!\n", status);
254 }
255 }
256
257 static void
258 choninvalidate(struct cam_periph *periph)
259 {
260 struct ch_softc *softc;
261 struct ccb_setasync csa;
262
263 softc = (struct ch_softc *)periph->softc;
264
265 /*
266 * De-register any async callbacks.
267 */
268 xpt_setup_ccb(&csa.ccb_h, periph->path,
269 /* priority */ 5);
270 csa.ccb_h.func_code = XPT_SASYNC_CB;
271 csa.event_enable = 0;
272 csa.callback = chasync;
273 csa.callback_arg = periph;
274 xpt_action((union ccb *)&csa);
275
276 softc->flags |= CH_FLAG_INVALID;
277
278 xpt_print_path(periph->path);
279 printf("lost device\n");
280
281 }
282
283 static void
284 chcleanup(struct cam_periph *periph)
285 {
286 struct ch_softc *softc;
287
288 softc = (struct ch_softc *)periph->softc;
289
290 devstat_remove_entry(softc->device_stats);
291 destroy_dev(softc->dev);
292 xpt_print_path(periph->path);
293 printf("removing device entry\n");
294 free(softc, M_DEVBUF);
295 }
296
297 static void
298 chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg)
299 {
300 struct cam_periph *periph;
301
302 periph = (struct cam_periph *)callback_arg;
303
304 switch(code) {
305 case AC_FOUND_DEVICE:
306 {
307 struct ccb_getdev *cgd;
308 cam_status status;
309
310 cgd = (struct ccb_getdev *)arg;
311 if (cgd == NULL)
312 break;
313
314 if (SID_TYPE(&cgd->inq_data)!= T_CHANGER)
315 break;
316
317 /*
318 * Allocate a peripheral instance for
319 * this device and start the probe
320 * process.
321 */
322 status = cam_periph_alloc(chregister, choninvalidate,
323 chcleanup, chstart, "ch",
324 CAM_PERIPH_BIO, cgd->ccb_h.path,
325 chasync, AC_FOUND_DEVICE, cgd);
326
327 if (status != CAM_REQ_CMP
328 && status != CAM_REQ_INPROG)
329 printf("chasync: Unable to probe new device "
330 "due to status 0x%x\n", status);
331
332 break;
333
334 }
335 default:
336 cam_periph_async(periph, code, path, arg);
337 break;
338 }
339 }
340
341 static cam_status
342 chregister(struct cam_periph *periph, void *arg)
343 {
344 struct ch_softc *softc;
345 struct ccb_setasync csa;
346 struct ccb_getdev *cgd;
347
348 cgd = (struct ccb_getdev *)arg;
349 if (periph == NULL) {
350 printf("chregister: periph was NULL!!\n");
351 return(CAM_REQ_CMP_ERR);
352 }
353
354 if (cgd == NULL) {
355 printf("chregister: no getdev CCB, can't register device\n");
356 return(CAM_REQ_CMP_ERR);
357 }
358
359 softc = (struct ch_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
360
361 if (softc == NULL) {
362 printf("chregister: Unable to probe new device. "
363 "Unable to allocate softc\n");
364 return(CAM_REQ_CMP_ERR);
365 }
366
367 bzero(softc, sizeof(*softc));
368 softc->state = CH_STATE_PROBE;
369 periph->softc = softc;
370 softc->quirks = CH_Q_NONE;
371
372 /*
373 * Changers don't have a blocksize, and obviously don't support
374 * tagged queueing.
375 */
376 softc->device_stats = devstat_new_entry("ch",
377 periph->unit_number, 0,
378 DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS,
379 SID_TYPE(&cgd->inq_data)| DEVSTAT_TYPE_IF_SCSI,
380 DEVSTAT_PRIORITY_OTHER);
381
382 /* Register the device */
383 softc->dev = make_dev(&ch_cdevsw, periph->unit_number, UID_ROOT,
384 GID_OPERATOR, 0600, "%s%d", periph->periph_name,
385 periph->unit_number);
386 softc->dev->si_drv1 = periph;
387
388 /*
389 * Add an async callback so that we get
390 * notified if this device goes away.
391 */
392 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5);
393 csa.ccb_h.func_code = XPT_SASYNC_CB;
394 csa.event_enable = AC_LOST_DEVICE;
395 csa.callback = chasync;
396 csa.callback_arg = periph;
397 xpt_action((union ccb *)&csa);
398
399 /*
400 * Lock this peripheral until we are setup.
401 * This first call can't block
402 */
403 (void)cam_periph_lock(periph, PRIBIO);
404 xpt_schedule(periph, /*priority*/5);
405
406 return(CAM_REQ_CMP);
407 }
408
409 static int
410 chopen(struct cdev *dev, int flags, int fmt, struct thread *td)
411 {
412 struct cam_periph *periph;
413 struct ch_softc *softc;
414 int error;
415 int s;
416
417 periph = (struct cam_periph *)dev->si_drv1;
418 if (periph == NULL)
419 return(ENXIO);
420
421 softc = (struct ch_softc *)periph->softc;
422
423 s = splsoftcam();
424 if (softc->flags & CH_FLAG_INVALID) {
425 splx(s);
426 return(ENXIO);
427 }
428
429 if ((error = cam_periph_lock(periph, PRIBIO | PCATCH)) != 0) {
430 splx(s);
431 return (error);
432 }
433
434 splx(s);
435
436 if ((softc->flags & CH_FLAG_OPEN) == 0) {
437 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
438 return(ENXIO);
439 softc->flags |= CH_FLAG_OPEN;
440 }
441
442 /*
443 * Load information about this changer device into the softc.
444 */
445 if ((error = chgetparams(periph)) != 0) {
446 softc->flags &= ~CH_FLAG_OPEN;
447 cam_periph_unlock(periph);
448 cam_periph_release(periph);
449 return(error);
450 }
451
452 cam_periph_unlock(periph);
453
454 return(error);
455 }
456
457 static int
458 chclose(struct cdev *dev, int flag, int fmt, struct thread *td)
459 {
460 struct cam_periph *periph;
461 struct ch_softc *softc;
462 int error;
463
464 error = 0;
465
466 periph = (struct cam_periph *)dev->si_drv1;
467 if (periph == NULL)
468 return(ENXIO);
469
470 softc = (struct ch_softc *)periph->softc;
471
472 if ((error = cam_periph_lock(periph, PRIBIO)) != 0)
473 return(error);
474
475 softc->flags &= ~CH_FLAG_OPEN;
476
477 cam_periph_unlock(periph);
478 cam_periph_release(periph);
479
480 return(0);
481 }
482
483 static void
484 chstart(struct cam_periph *periph, union ccb *start_ccb)
485 {
486 struct ch_softc *softc;
487 int s;
488
489 softc = (struct ch_softc *)periph->softc;
490
491 switch (softc->state) {
492 case CH_STATE_NORMAL:
493 {
494 s = splbio();
495 if (periph->immediate_priority <= periph->pinfo.priority){
496 start_ccb->ccb_h.ccb_state = CH_CCB_WAITING;
497
498 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
499 periph_links.sle);
500 periph->immediate_priority = CAM_PRIORITY_NONE;
501 splx(s);
502 wakeup(&periph->ccb_list);
503 } else
504 splx(s);
505 break;
506 }
507 case CH_STATE_PROBE:
508 {
509 int mode_buffer_len;
510 void *mode_buffer;
511
512 /*
513 * Include the block descriptor when calculating the mode
514 * buffer length,
515 */
516 mode_buffer_len = sizeof(struct scsi_mode_header_6) +
517 sizeof(struct scsi_mode_blk_desc) +
518 sizeof(struct page_element_address_assignment);
519
520 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT);
521
522 if (mode_buffer == NULL) {
523 printf("chstart: couldn't malloc mode sense data\n");
524 break;
525 }
526 bzero(mode_buffer, mode_buffer_len);
527
528 /*
529 * Get the element address assignment page.
530 */
531 scsi_mode_sense(&start_ccb->csio,
532 /* retries */ 1,
533 /* cbfcnp */ chdone,
534 /* tag_action */ MSG_SIMPLE_Q_TAG,
535 /* dbd */ (softc->quirks & CH_Q_NO_DBD) ?
536 FALSE : TRUE,
537 /* page_code */ SMS_PAGE_CTRL_CURRENT,
538 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE,
539 /* param_buf */ (u_int8_t *)mode_buffer,
540 /* param_len */ mode_buffer_len,
541 /* sense_len */ SSD_FULL_SIZE,
542 /* timeout */ CH_TIMEOUT_MODE_SENSE);
543
544 start_ccb->ccb_h.ccb_bp = NULL;
545 start_ccb->ccb_h.ccb_state = CH_CCB_PROBE;
546 xpt_action(start_ccb);
547 break;
548 }
549 }
550 }
551
552 static void
553 chdone(struct cam_periph *periph, union ccb *done_ccb)
554 {
555 struct ch_softc *softc;
556 struct ccb_scsiio *csio;
557
558 softc = (struct ch_softc *)periph->softc;
559 csio = &done_ccb->csio;
560
561 switch(done_ccb->ccb_h.ccb_state) {
562 case CH_CCB_PROBE:
563 {
564 struct scsi_mode_header_6 *mode_header;
565 struct page_element_address_assignment *ea;
566 char announce_buf[80];
567
568
569 mode_header = (struct scsi_mode_header_6 *)csio->data_ptr;
570
571 ea = (struct page_element_address_assignment *)
572 find_mode_page_6(mode_header);
573
574 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){
575
576 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea);
577 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte);
578 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea);
579 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse);
580 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea);
581 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee);
582 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea);
583 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte);
584 softc->sc_picker = softc->sc_firsts[CHET_MT];
585
586 #define PLURAL(c) (c) == 1 ? "" : "s"
587 snprintf(announce_buf, sizeof(announce_buf),
588 "%d slot%s, %d drive%s, "
589 "%d picker%s, %d portal%s",
590 softc->sc_counts[CHET_ST],
591 PLURAL(softc->sc_counts[CHET_ST]),
592 softc->sc_counts[CHET_DT],
593 PLURAL(softc->sc_counts[CHET_DT]),
594 softc->sc_counts[CHET_MT],
595 PLURAL(softc->sc_counts[CHET_MT]),
596 softc->sc_counts[CHET_IE],
597 PLURAL(softc->sc_counts[CHET_IE]));
598 #undef PLURAL
599 } else {
600 int error;
601
602 error = cherror(done_ccb, CAM_RETRY_SELTO,
603 SF_RETRY_UA | SF_NO_PRINT);
604 /*
605 * Retry any UNIT ATTENTION type errors. They
606 * are expected at boot.
607 */
608 if (error == ERESTART) {
609 /*
610 * A retry was scheuled, so
611 * just return.
612 */
613 return;
614 } else if (error != 0) {
615 int retry_scheduled;
616 struct scsi_mode_sense_6 *sms;
617
618 sms = (struct scsi_mode_sense_6 *)
619 done_ccb->csio.cdb_io.cdb_bytes;
620
621 /*
622 * Check to see if block descriptors were
623 * disabled. Some devices don't like that.
624 * We're taking advantage of the fact that
625 * the first few bytes of the 6 and 10 byte
626 * mode sense commands are the same. If
627 * block descriptors were disabled, enable
628 * them and re-send the command.
629 */
630 if (sms->byte2 & SMS_DBD) {
631 sms->byte2 &= ~SMS_DBD;
632 xpt_action(done_ccb);
633 softc->quirks |= CH_Q_NO_DBD;
634 retry_scheduled = 1;
635 } else
636 retry_scheduled = 0;
637
638 /* Don't wedge this device's queue */
639 cam_release_devq(done_ccb->ccb_h.path,
640 /*relsim_flags*/0,
641 /*reduction*/0,
642 /*timeout*/0,
643 /*getcount_only*/0);
644
645 if (retry_scheduled)
646 return;
647
648 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK)
649 == CAM_SCSI_STATUS_ERROR)
650 scsi_sense_print(&done_ccb->csio);
651 else {
652 xpt_print_path(periph->path);
653 printf("got CAM status %#x\n",
654 done_ccb->ccb_h.status);
655 }
656 xpt_print_path(periph->path);
657 printf("fatal error, failed to attach to"
658 " device\n");
659
660 cam_periph_invalidate(periph);
661
662 announce_buf[0] = '\0';
663 }
664 }
665 if (announce_buf[0] != '\0')
666 xpt_announce_periph(periph, announce_buf);
667 softc->state = CH_STATE_NORMAL;
668 free(mode_header, M_SCSICH);
669 /*
670 * Since our peripheral may be invalidated by an error
671 * above or an external event, we must release our CCB
672 * before releasing the probe lock on the peripheral.
673 * The peripheral will only go away once the last lock
674 * is removed, and we need it around for the CCB release
675 * operation.
676 */
677 xpt_release_ccb(done_ccb);
678 cam_periph_unlock(periph);
679 return;
680 }
681 case CH_CCB_WAITING:
682 {
683 /* Caller will release the CCB */
684 wakeup(&done_ccb->ccb_h.cbfcnp);
685 return;
686 }
687 default:
688 break;
689 }
690 xpt_release_ccb(done_ccb);
691 }
692
693 static int
694 cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
695 {
696 struct ch_softc *softc;
697 struct cam_periph *periph;
698
699 periph = xpt_path_periph(ccb->ccb_h.path);
700 softc = (struct ch_softc *)periph->softc;
701
702 return (cam_periph_error(ccb, cam_flags, sense_flags,
703 &softc->saved_ccb));
704 }
705
706 static int
707 chioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
708 {
709 struct cam_periph *periph;
710 struct ch_softc *softc;
711 int error;
712
713 periph = (struct cam_periph *)dev->si_drv1;
714 if (periph == NULL)
715 return(ENXIO);
716
717 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n"));
718
719 softc = (struct ch_softc *)periph->softc;
720
721 error = 0;
722
723 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
724 ("trying to do ioctl %#lx\n", cmd));
725
726 /*
727 * If this command can change the device's state, we must
728 * have the device open for writing.
729 */
730 switch (cmd) {
731 case CHIOGPICKER:
732 case CHIOGPARAMS:
733 case CHIOGSTATUS:
734 break;
735
736 default:
737 if ((flag & FWRITE) == 0)
738 return (EBADF);
739 }
740
741 switch (cmd) {
742 case CHIOMOVE:
743 error = chmove(periph, (struct changer_move *)addr);
744 break;
745
746 case CHIOEXCHANGE:
747 error = chexchange(periph, (struct changer_exchange *)addr);
748 break;
749
750 case CHIOPOSITION:
751 error = chposition(periph, (struct changer_position *)addr);
752 break;
753
754 case CHIOGPICKER:
755 *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT];
756 break;
757
758 case CHIOSPICKER:
759 {
760 int new_picker = *(int *)addr;
761
762 if (new_picker > (softc->sc_counts[CHET_MT] - 1))
763 return (EINVAL);
764 softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker;
765 break;
766 }
767 case CHIOGPARAMS:
768 {
769 struct changer_params *cp = (struct changer_params *)addr;
770
771 cp->cp_npickers = softc->sc_counts[CHET_MT];
772 cp->cp_nslots = softc->sc_counts[CHET_ST];
773 cp->cp_nportals = softc->sc_counts[CHET_IE];
774 cp->cp_ndrives = softc->sc_counts[CHET_DT];
775 break;
776 }
777 case CHIOIELEM:
778 error = chielem(periph, *(unsigned int *)addr);
779 break;
780
781 case CHIOGSTATUS:
782 {
783 error = chgetelemstatus(periph,
784 (struct changer_element_status_request *) addr);
785 break;
786 }
787
788 case CHIOSETVOLTAG:
789 {
790 error = chsetvoltag(periph,
791 (struct changer_set_voltag_request *) addr);
792 break;
793 }
794
795 /* Implement prevent/allow? */
796
797 default:
798 error = cam_periph_ioctl(periph, cmd, addr, cherror);
799 break;
800 }
801
802 return (error);
803 }
804
805 static int
806 chmove(struct cam_periph *periph, struct changer_move *cm)
807 {
808 struct ch_softc *softc;
809 u_int16_t fromelem, toelem;
810 union ccb *ccb;
811 int error;
812
813 error = 0;
814 softc = (struct ch_softc *)periph->softc;
815
816 /*
817 * Check arguments.
818 */
819 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT))
820 return (EINVAL);
821 if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) ||
822 (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1)))
823 return (ENODEV);
824
825 /*
826 * Check the request against the changer's capabilities.
827 */
828 if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0)
829 return (ENODEV);
830
831 /*
832 * Calculate the source and destination elements.
833 */
834 fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit;
835 toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit;
836
837 ccb = cam_periph_getccb(periph, /*priority*/ 1);
838
839 scsi_move_medium(&ccb->csio,
840 /* retries */ 1,
841 /* cbfcnp */ chdone,
842 /* tag_action */ MSG_SIMPLE_Q_TAG,
843 /* tea */ softc->sc_picker,
844 /* src */ fromelem,
845 /* dst */ toelem,
846 /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE,
847 /* sense_len */ SSD_FULL_SIZE,
848 /* timeout */ CH_TIMEOUT_MOVE_MEDIUM);
849
850 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO,
851 /*sense_flags*/ SF_RETRY_UA,
852 softc->device_stats);
853
854 xpt_release_ccb(ccb);
855
856 return(error);
857 }
858
859 static int
860 chexchange(struct cam_periph *periph, struct changer_exchange *ce)
861 {
862 struct ch_softc *softc;
863 u_int16_t src, dst1, dst2;
864 union ccb *ccb;
865 int error;
866
867 error = 0;
868 softc = (struct ch_softc *)periph->softc;
869 /*
870 * Check arguments.
871 */
872 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) ||
873 (ce->ce_sdsttype > CHET_DT))
874 return (EINVAL);
875 if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) ||
876 (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) ||
877 (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1)))
878 return (ENODEV);
879
880 /*
881 * Check the request against the changer's capabilities.
882 */
883 if (((softc->sc_exchangemask[ce->ce_srctype] &
884 (1 << ce->ce_fdsttype)) == 0) ||
885 ((softc->sc_exchangemask[ce->ce_fdsttype] &
886 (1 << ce->ce_sdsttype)) == 0))
887 return (ENODEV);
888
889 /*
890 * Calculate the source and destination elements.
891 */
892 src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit;
893 dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit;
894 dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit;
895
896 ccb = cam_periph_getccb(periph, /*priority*/ 1);
897
898 scsi_exchange_medium(&ccb->csio,
899 /* retries */ 1,
900 /* cbfcnp */ chdone,
901 /* tag_action */ MSG_SIMPLE_Q_TAG,
902 /* tea */ softc->sc_picker,
903 /* src */ src,
904 /* dst1 */ dst1,
905 /* dst2 */ dst2,
906 /* invert1 */ (ce->ce_flags & CE_INVERT1) ?
907 TRUE : FALSE,
908 /* invert2 */ (ce->ce_flags & CE_INVERT2) ?
909 TRUE : FALSE,
910 /* sense_len */ SSD_FULL_SIZE,
911 /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM);
912
913 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO,
914 /*sense_flags*/ SF_RETRY_UA,
915 softc->device_stats);
916
917 xpt_release_ccb(ccb);
918
919 return(error);
920 }
921
922 static int
923 chposition(struct cam_periph *periph, struct changer_position *cp)
924 {
925 struct ch_softc *softc;
926 u_int16_t dst;
927 union ccb *ccb;
928 int error;
929
930 error = 0;
931 softc = (struct ch_softc *)periph->softc;
932
933 /*
934 * Check arguments.
935 */
936 if (cp->cp_type > CHET_DT)
937 return (EINVAL);
938 if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1))
939 return (ENODEV);
940
941 /*
942 * Calculate the destination element.
943 */
944 dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit;
945
946 ccb = cam_periph_getccb(periph, /*priority*/ 1);
947
948 scsi_position_to_element(&ccb->csio,
949 /* retries */ 1,
950 /* cbfcnp */ chdone,
951 /* tag_action */ MSG_SIMPLE_Q_TAG,
952 /* tea */ softc->sc_picker,
953 /* dst */ dst,
954 /* invert */ (cp->cp_flags & CP_INVERT) ?
955 TRUE : FALSE,
956 /* sense_len */ SSD_FULL_SIZE,
957 /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT);
958
959 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
960 /*sense_flags*/ SF_RETRY_UA,
961 softc->device_stats);
962
963 xpt_release_ccb(ccb);
964
965 return(error);
966 }
967
968 /*
969 * Copy a volume tag to a volume_tag struct, converting SCSI byte order
970 * to host native byte order in the volume serial number. The volume
971 * label as returned by the changer is transferred to user mode as
972 * nul-terminated string. Volume labels are truncated at the first
973 * space, as suggested by SCSI-2.
974 */
975 static void
976 copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag)
977 {
978 int i;
979 for (i=0; i<CH_VOLTAG_MAXLEN; i++) {
980 char c = voltag->vif[i];
981 if (c && c != ' ')
982 uvoltag->cv_volid[i] = c;
983 else
984 break;
985 }
986 uvoltag->cv_serial = scsi_2btoul(voltag->vsn);
987 }
988
989 /*
990 * Copy an an element status descriptor to a user-mode
991 * changer_element_status structure.
992 */
993
994 static void
995 copy_element_status(struct ch_softc *softc,
996 u_int16_t flags,
997 struct read_element_status_descriptor *desc,
998 struct changer_element_status *ces)
999 {
1000 u_int16_t eaddr = scsi_2btoul(desc->eaddr);
1001 u_int16_t et;
1002
1003 ces->ces_int_addr = eaddr;
1004 /* set up logical address in element status */
1005 for (et = CHET_MT; et <= CHET_DT; et++) {
1006 if ((softc->sc_firsts[et] <= eaddr)
1007 && ((softc->sc_firsts[et] + softc->sc_counts[et])
1008 > eaddr)) {
1009 ces->ces_addr = eaddr - softc->sc_firsts[et];
1010 ces->ces_type = et;
1011 break;
1012 }
1013 }
1014
1015 ces->ces_flags = desc->flags1;
1016
1017 ces->ces_sensecode = desc->sense_code;
1018 ces->ces_sensequal = desc->sense_qual;
1019
1020 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT)
1021 ces->ces_flags |= CES_INVERT;
1022
1023 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) {
1024
1025 eaddr = scsi_2btoul(desc->ssea);
1026
1027 /* convert source address to logical format */
1028 for (et = CHET_MT; et <= CHET_DT; et++) {
1029 if ((softc->sc_firsts[et] <= eaddr)
1030 && ((softc->sc_firsts[et] + softc->sc_counts[et])
1031 > eaddr)) {
1032 ces->ces_source_addr =
1033 eaddr - softc->sc_firsts[et];
1034 ces->ces_source_type = et;
1035 ces->ces_flags |= CES_SOURCE_VALID;
1036 break;
1037 }
1038 }
1039
1040 if (!(ces->ces_flags & CES_SOURCE_VALID))
1041 printf("ch: warning: could not map element source "
1042 "address %ud to a valid element type\n",
1043 eaddr);
1044 }
1045
1046
1047 if (flags & READ_ELEMENT_STATUS_PVOLTAG)
1048 copy_voltag(&(ces->ces_pvoltag), &(desc->pvoltag));
1049 if (flags & READ_ELEMENT_STATUS_AVOLTAG)
1050 copy_voltag(&(ces->ces_avoltag), &(desc->avoltag));
1051
1052 if (desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_IDVALID) {
1053 ces->ces_flags |= CES_SCSIID_VALID;
1054 ces->ces_scsi_id = desc->dt_scsi_addr;
1055 }
1056
1057 if (desc->dt_scsi_addr & READ_ELEMENT_STATUS_DT_LUVALID) {
1058 ces->ces_flags |= CES_LUN_VALID;
1059 ces->ces_scsi_lun =
1060 desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_LUNMASK;
1061 }
1062 }
1063
1064 static int
1065 chgetelemstatus(struct cam_periph *periph,
1066 struct changer_element_status_request *cesr)
1067 {
1068 struct read_element_status_header *st_hdr;
1069 struct read_element_status_page_header *pg_hdr;
1070 struct read_element_status_descriptor *desc;
1071 caddr_t data = NULL;
1072 size_t size, desclen;
1073 int avail, i, error = 0;
1074 struct changer_element_status *user_data = NULL;
1075 struct ch_softc *softc;
1076 union ccb *ccb;
1077 int chet = cesr->cesr_element_type;
1078 int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0;
1079
1080 softc = (struct ch_softc *)periph->softc;
1081
1082 /* perform argument checking */
1083
1084 /*
1085 * Perform a range check on the cesr_element_{base,count}
1086 * request argument fields.
1087 */
1088 if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0
1089 || (cesr->cesr_element_base + cesr->cesr_element_count)
1090 > softc->sc_counts[chet])
1091 return (EINVAL);
1092
1093 /*
1094 * Request one descriptor for the given element type. This
1095 * is used to determine the size of the descriptor so that
1096 * we can allocate enough storage for all of them. We assume
1097 * that the first one can fit into 1k.
1098 */
1099 data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK);
1100
1101 ccb = cam_periph_getccb(periph, /*priority*/ 1);
1102
1103 scsi_read_element_status(&ccb->csio,
1104 /* retries */ 1,
1105 /* cbfcnp */ chdone,
1106 /* tag_action */ MSG_SIMPLE_Q_TAG,
1107 /* voltag */ want_voltags,
1108 /* sea */ softc->sc_firsts[chet],
1109 /* count */ 1,
1110 /* data_ptr */ data,
1111 /* dxfer_len */ 1024,
1112 /* sense_len */ SSD_FULL_SIZE,
1113 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS);
1114
1115 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1116 /*sense_flags*/ SF_RETRY_UA,
1117 softc->device_stats);
1118
1119 if (error)
1120 goto done;
1121
1122 st_hdr = (struct read_element_status_header *)data;
1123 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr +
1124 sizeof(struct read_element_status_header));
1125 desclen = scsi_2btoul(pg_hdr->edl);
1126
1127 size = sizeof(struct read_element_status_header) +
1128 sizeof(struct read_element_status_page_header) +
1129 (desclen * cesr->cesr_element_count);
1130
1131 /*
1132 * Reallocate storage for descriptors and get them from the
1133 * device.
1134 */
1135 free(data, M_DEVBUF);
1136 data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK);
1137
1138 scsi_read_element_status(&ccb->csio,
1139 /* retries */ 1,
1140 /* cbfcnp */ chdone,
1141 /* tag_action */ MSG_SIMPLE_Q_TAG,
1142 /* voltag */ want_voltags,
1143 /* sea */ softc->sc_firsts[chet]
1144 + cesr->cesr_element_base,
1145 /* count */ cesr->cesr_element_count,
1146 /* data_ptr */ data,
1147 /* dxfer_len */ size,
1148 /* sense_len */ SSD_FULL_SIZE,
1149 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS);
1150
1151 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1152 /*sense_flags*/ SF_RETRY_UA,
1153 softc->device_stats);
1154
1155 if (error)
1156 goto done;
1157
1158 /*
1159 * Fill in the user status array.
1160 */
1161 st_hdr = (struct read_element_status_header *)data;
1162 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr +
1163 sizeof(struct read_element_status_header));
1164 avail = scsi_2btoul(st_hdr->count);
1165
1166 if (avail != cesr->cesr_element_count) {
1167 xpt_print_path(periph->path);
1168 printf("warning, READ ELEMENT STATUS avail != count\n");
1169 }
1170
1171 user_data = (struct changer_element_status *)
1172 malloc(avail * sizeof(struct changer_element_status),
1173 M_DEVBUF, M_WAITOK | M_ZERO);
1174
1175 desc = (struct read_element_status_descriptor *)((uintptr_t)data +
1176 sizeof(struct read_element_status_header) +
1177 sizeof(struct read_element_status_page_header));
1178 /*
1179 * Set up the individual element status structures
1180 */
1181 for (i = 0; i < avail; ++i) {
1182 struct changer_element_status *ces = &(user_data[i]);
1183
1184 copy_element_status(softc, pg_hdr->flags, desc, ces);
1185
1186 desc = (struct read_element_status_descriptor *)
1187 ((uintptr_t)desc + desclen);
1188 }
1189
1190 /* Copy element status structures out to userspace. */
1191 error = copyout(user_data,
1192 cesr->cesr_element_status,
1193 avail * sizeof(struct changer_element_status));
1194
1195 done:
1196 xpt_release_ccb(ccb);
1197
1198 if (data != NULL)
1199 free(data, M_DEVBUF);
1200 if (user_data != NULL)
1201 free(user_data, M_DEVBUF);
1202
1203 return (error);
1204 }
1205
1206 static int
1207 chielem(struct cam_periph *periph,
1208 unsigned int timeout)
1209 {
1210 union ccb *ccb;
1211 struct ch_softc *softc;
1212 int error;
1213
1214 if (!timeout) {
1215 timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS;
1216 } else {
1217 timeout *= 1000;
1218 }
1219
1220 error = 0;
1221 softc = (struct ch_softc *)periph->softc;
1222
1223 ccb = cam_periph_getccb(periph, /*priority*/ 1);
1224
1225 scsi_initialize_element_status(&ccb->csio,
1226 /* retries */ 1,
1227 /* cbfcnp */ chdone,
1228 /* tag_action */ MSG_SIMPLE_Q_TAG,
1229 /* sense_len */ SSD_FULL_SIZE,
1230 /* timeout */ timeout);
1231
1232 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1233 /*sense_flags*/ SF_RETRY_UA,
1234 softc->device_stats);
1235
1236 xpt_release_ccb(ccb);
1237
1238 return(error);
1239 }
1240
1241 static int
1242 chsetvoltag(struct cam_periph *periph,
1243 struct changer_set_voltag_request *csvr)
1244 {
1245 union ccb *ccb;
1246 struct ch_softc *softc;
1247 u_int16_t ea;
1248 u_int8_t sac;
1249 struct scsi_send_volume_tag_parameters ssvtp;
1250 int error;
1251 int i;
1252
1253 error = 0;
1254 softc = (struct ch_softc *)periph->softc;
1255
1256 bzero(&ssvtp, sizeof(ssvtp));
1257 for (i=0; i<sizeof(ssvtp.vitf); i++) {
1258 ssvtp.vitf[i] = ' ';
1259 }
1260
1261 /*
1262 * Check arguments.
1263 */
1264 if (csvr->csvr_type > CHET_DT)
1265 return EINVAL;
1266 if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1))
1267 return ENODEV;
1268
1269 ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr;
1270
1271 if (csvr->csvr_flags & CSVR_ALTERNATE) {
1272 switch (csvr->csvr_flags & CSVR_MODE_MASK) {
1273 case CSVR_MODE_SET:
1274 sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE;
1275 break;
1276 case CSVR_MODE_REPLACE:
1277 sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE;
1278 break;
1279 case CSVR_MODE_CLEAR:
1280 sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE;
1281 break;
1282 default:
1283 error = EINVAL;
1284 goto out;
1285 }
1286 } else {
1287 switch (csvr->csvr_flags & CSVR_MODE_MASK) {
1288 case CSVR_MODE_SET:
1289 sac = SEND_VOLUME_TAG_ASSERT_PRIMARY;
1290 break;
1291 case CSVR_MODE_REPLACE:
1292 sac = SEND_VOLUME_TAG_REPLACE_PRIMARY;
1293 break;
1294 case CSVR_MODE_CLEAR:
1295 sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY;
1296 break;
1297 default:
1298 error = EINVAL;
1299 goto out;
1300 }
1301 }
1302
1303 memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid,
1304 min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf)));
1305 scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn);
1306
1307 ccb = cam_periph_getccb(periph, /*priority*/ 1);
1308
1309 scsi_send_volume_tag(&ccb->csio,
1310 /* retries */ 1,
1311 /* cbfcnp */ chdone,
1312 /* tag_action */ MSG_SIMPLE_Q_TAG,
1313 /* element_address */ ea,
1314 /* send_action_code */ sac,
1315 /* parameters */ &ssvtp,
1316 /* sense_len */ SSD_FULL_SIZE,
1317 /* timeout */ CH_TIMEOUT_SEND_VOLTAG);
1318
1319 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1320 /*sense_flags*/ SF_RETRY_UA,
1321 softc->device_stats);
1322
1323 xpt_release_ccb(ccb);
1324
1325 out:
1326 return error;
1327 }
1328
1329 static int
1330 chgetparams(struct cam_periph *periph)
1331 {
1332 union ccb *ccb;
1333 struct ch_softc *softc;
1334 void *mode_buffer;
1335 int mode_buffer_len;
1336 struct page_element_address_assignment *ea;
1337 struct page_device_capabilities *cap;
1338 int error, from, dbd;
1339 u_int8_t *moves, *exchanges;
1340
1341 error = 0;
1342
1343 softc = (struct ch_softc *)periph->softc;
1344
1345 ccb = cam_periph_getccb(periph, /*priority*/ 1);
1346
1347 /*
1348 * The scsi_mode_sense_data structure is just a convenience
1349 * structure that allows us to easily calculate the worst-case
1350 * storage size of the mode sense buffer.
1351 */
1352 mode_buffer_len = sizeof(struct scsi_mode_sense_data);
1353
1354 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT);
1355
1356 if (mode_buffer == NULL) {
1357 printf("chgetparams: couldn't malloc mode sense data\n");
1358 return(ENOSPC);
1359 }
1360
1361 bzero(mode_buffer, mode_buffer_len);
1362
1363 if (softc->quirks & CH_Q_NO_DBD)
1364 dbd = FALSE;
1365 else
1366 dbd = TRUE;
1367
1368 /*
1369 * Get the element address assignment page.
1370 */
1371 scsi_mode_sense(&ccb->csio,
1372 /* retries */ 1,
1373 /* cbfcnp */ chdone,
1374 /* tag_action */ MSG_SIMPLE_Q_TAG,
1375 /* dbd */ dbd,
1376 /* page_code */ SMS_PAGE_CTRL_CURRENT,
1377 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE,
1378 /* param_buf */ (u_int8_t *)mode_buffer,
1379 /* param_len */ mode_buffer_len,
1380 /* sense_len */ SSD_FULL_SIZE,
1381 /* timeout */ CH_TIMEOUT_MODE_SENSE);
1382
1383 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1384 /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT,
1385 softc->device_stats);
1386
1387 if (error) {
1388 if (dbd) {
1389 struct scsi_mode_sense_6 *sms;
1390
1391 sms = (struct scsi_mode_sense_6 *)
1392 ccb->csio.cdb_io.cdb_bytes;
1393
1394 sms->byte2 &= ~SMS_DBD;
1395 error = cam_periph_runccb(ccb, cherror,
1396 /*cam_flags*/ CAM_RETRY_SELTO,
1397 /*sense_flags*/ SF_RETRY_UA,
1398 softc->device_stats);
1399 } else {
1400 /*
1401 * Since we disabled sense printing above, print
1402 * out the sense here since we got an error.
1403 */
1404 scsi_sense_print(&ccb->csio);
1405 }
1406
1407 if (error) {
1408 xpt_print_path(periph->path);
1409 printf("chgetparams: error getting element "
1410 "address page\n");
1411 xpt_release_ccb(ccb);
1412 free(mode_buffer, M_SCSICH);
1413 return(error);
1414 }
1415 }
1416
1417 ea = (struct page_element_address_assignment *)
1418 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer);
1419
1420 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea);
1421 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte);
1422 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea);
1423 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse);
1424 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea);
1425 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee);
1426 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea);
1427 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte);
1428
1429 bzero(mode_buffer, mode_buffer_len);
1430
1431 /*
1432 * Now get the device capabilities page.
1433 */
1434 scsi_mode_sense(&ccb->csio,
1435 /* retries */ 1,
1436 /* cbfcnp */ chdone,
1437 /* tag_action */ MSG_SIMPLE_Q_TAG,
1438 /* dbd */ dbd,
1439 /* page_code */ SMS_PAGE_CTRL_CURRENT,
1440 /* page */ CH_DEVICE_CAP_PAGE,
1441 /* param_buf */ (u_int8_t *)mode_buffer,
1442 /* param_len */ mode_buffer_len,
1443 /* sense_len */ SSD_FULL_SIZE,
1444 /* timeout */ CH_TIMEOUT_MODE_SENSE);
1445
1446 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1447 /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT,
1448 softc->device_stats);
1449
1450 if (error) {
1451 if (dbd) {
1452 struct scsi_mode_sense_6 *sms;
1453
1454 sms = (struct scsi_mode_sense_6 *)
1455 ccb->csio.cdb_io.cdb_bytes;
1456
1457 sms->byte2 &= ~SMS_DBD;
1458 error = cam_periph_runccb(ccb, cherror,
1459 /*cam_flags*/ CAM_RETRY_SELTO,
1460 /*sense_flags*/ SF_RETRY_UA,
1461 softc->device_stats);
1462 } else {
1463 /*
1464 * Since we disabled sense printing above, print
1465 * out the sense here since we got an error.
1466 */
1467 scsi_sense_print(&ccb->csio);
1468 }
1469
1470 if (error) {
1471 xpt_print_path(periph->path);
1472 printf("chgetparams: error getting device "
1473 "capabilities page\n");
1474 xpt_release_ccb(ccb);
1475 free(mode_buffer, M_SCSICH);
1476 return(error);
1477 }
1478 }
1479
1480 xpt_release_ccb(ccb);
1481
1482 cap = (struct page_device_capabilities *)
1483 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer);
1484
1485 bzero(softc->sc_movemask, sizeof(softc->sc_movemask));
1486 bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask));
1487 moves = cap->move_from;
1488 exchanges = cap->exchange_with;
1489 for (from = CHET_MT; from <= CHET_MAX; ++from) {
1490 softc->sc_movemask[from] = moves[from];
1491 softc->sc_exchangemask[from] = exchanges[from];
1492 }
1493
1494 free(mode_buffer, M_SCSICH);
1495
1496 return(error);
1497 }
1498
1499 void
1500 scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries,
1501 void (*cbfcnp)(struct cam_periph *, union ccb *),
1502 u_int8_t tag_action, u_int32_t tea, u_int32_t src,
1503 u_int32_t dst, int invert, u_int8_t sense_len,
1504 u_int32_t timeout)
1505 {
1506 struct scsi_move_medium *scsi_cmd;
1507
1508 scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes;
1509 bzero(scsi_cmd, sizeof(*scsi_cmd));
1510
1511 scsi_cmd->opcode = MOVE_MEDIUM;
1512
1513 scsi_ulto2b(tea, scsi_cmd->tea);
1514 scsi_ulto2b(src, scsi_cmd->src);
1515 scsi_ulto2b(dst, scsi_cmd->dst);
1516
1517 if (invert)
1518 scsi_cmd->invert |= MOVE_MEDIUM_INVERT;
1519
1520 cam_fill_csio(csio,
1521 retries,
1522 cbfcnp,
1523 /*flags*/ CAM_DIR_NONE,
1524 tag_action,
1525 /*data_ptr*/ NULL,
1526 /*dxfer_len*/ 0,
1527 sense_len,
1528 sizeof(*scsi_cmd),
1529 timeout);
1530 }
1531
1532 void
1533 scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries,
1534 void (*cbfcnp)(struct cam_periph *, union ccb *),
1535 u_int8_t tag_action, u_int32_t tea, u_int32_t src,
1536 u_int32_t dst1, u_int32_t dst2, int invert1,
1537 int invert2, u_int8_t sense_len, u_int32_t timeout)
1538 {
1539 struct scsi_exchange_medium *scsi_cmd;
1540
1541 scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes;
1542 bzero(scsi_cmd, sizeof(*scsi_cmd));
1543
1544 scsi_cmd->opcode = EXCHANGE_MEDIUM;
1545
1546 scsi_ulto2b(tea, scsi_cmd->tea);
1547 scsi_ulto2b(src, scsi_cmd->src);
1548 scsi_ulto2b(dst1, scsi_cmd->fdst);
1549 scsi_ulto2b(dst2, scsi_cmd->sdst);
1550
1551 if (invert1)
1552 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1;
1553
1554 if (invert2)
1555 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2;
1556
1557 cam_fill_csio(csio,
1558 retries,
1559 cbfcnp,
1560 /*flags*/ CAM_DIR_NONE,
1561 tag_action,
1562 /*data_ptr*/ NULL,
1563 /*dxfer_len*/ 0,
1564 sense_len,
1565 sizeof(*scsi_cmd),
1566 timeout);
1567 }
1568
1569 void
1570 scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries,
1571 void (*cbfcnp)(struct cam_periph *, union ccb *),
1572 u_int8_t tag_action, u_int32_t tea, u_int32_t dst,
1573 int invert, u_int8_t sense_len, u_int32_t timeout)
1574 {
1575 struct scsi_position_to_element *scsi_cmd;
1576
1577 scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes;
1578 bzero(scsi_cmd, sizeof(*scsi_cmd));
1579
1580 scsi_cmd->opcode = POSITION_TO_ELEMENT;
1581
1582 scsi_ulto2b(tea, scsi_cmd->tea);
1583 scsi_ulto2b(dst, scsi_cmd->dst);
1584
1585 if (invert)
1586 scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT;
1587
1588 cam_fill_csio(csio,
1589 retries,
1590 cbfcnp,
1591 /*flags*/ CAM_DIR_NONE,
1592 tag_action,
1593 /*data_ptr*/ NULL,
1594 /*dxfer_len*/ 0,
1595 sense_len,
1596 sizeof(*scsi_cmd),
1597 timeout);
1598 }
1599
1600 void
1601 scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries,
1602 void (*cbfcnp)(struct cam_periph *, union ccb *),
1603 u_int8_t tag_action, int voltag, u_int32_t sea,
1604 u_int32_t count, u_int8_t *data_ptr,
1605 u_int32_t dxfer_len, u_int8_t sense_len,
1606 u_int32_t timeout)
1607 {
1608 struct scsi_read_element_status *scsi_cmd;
1609
1610 scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes;
1611 bzero(scsi_cmd, sizeof(*scsi_cmd));
1612
1613 scsi_cmd->opcode = READ_ELEMENT_STATUS;
1614
1615 scsi_ulto2b(sea, scsi_cmd->sea);
1616 scsi_ulto2b(count, scsi_cmd->count);
1617 scsi_ulto3b(dxfer_len, scsi_cmd->len);
1618
1619 if (voltag)
1620 scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG;
1621
1622 cam_fill_csio(csio,
1623 retries,
1624 cbfcnp,
1625 /*flags*/ CAM_DIR_IN,
1626 tag_action,
1627 data_ptr,
1628 dxfer_len,
1629 sense_len,
1630 sizeof(*scsi_cmd),
1631 timeout);
1632 }
1633
1634 void
1635 scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries,
1636 void (*cbfcnp)(struct cam_periph *, union ccb *),
1637 u_int8_t tag_action, u_int8_t sense_len,
1638 u_int32_t timeout)
1639 {
1640 struct scsi_initialize_element_status *scsi_cmd;
1641
1642 scsi_cmd = (struct scsi_initialize_element_status *)
1643 &csio->cdb_io.cdb_bytes;
1644 bzero(scsi_cmd, sizeof(*scsi_cmd));
1645
1646 scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS;
1647
1648 cam_fill_csio(csio,
1649 retries,
1650 cbfcnp,
1651 /*flags*/ CAM_DIR_NONE,
1652 tag_action,
1653 /* data_ptr */ NULL,
1654 /* dxfer_len */ 0,
1655 sense_len,
1656 sizeof(*scsi_cmd),
1657 timeout);
1658 }
1659
1660 void
1661 scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries,
1662 void (*cbfcnp)(struct cam_periph *, union ccb *),
1663 u_int8_t tag_action,
1664 u_int16_t element_address,
1665 u_int8_t send_action_code,
1666 struct scsi_send_volume_tag_parameters *parameters,
1667 u_int8_t sense_len, u_int32_t timeout)
1668 {
1669 struct scsi_send_volume_tag *scsi_cmd;
1670
1671 scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes;
1672 bzero(scsi_cmd, sizeof(*scsi_cmd));
1673
1674 scsi_cmd->opcode = SEND_VOLUME_TAG;
1675 scsi_ulto2b(element_address, scsi_cmd->ea);
1676 scsi_cmd->sac = send_action_code;
1677 scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll);
1678
1679 cam_fill_csio(csio,
1680 retries,
1681 cbfcnp,
1682 /*flags*/ CAM_DIR_OUT,
1683 tag_action,
1684 /* data_ptr */ (u_int8_t *) parameters,
1685 sizeof(*parameters),
1686 sense_len,
1687 sizeof(*scsi_cmd),
1688 timeout);
1689 }
Cache object: 693ccae7b409cf6e5e85a837be87ecfd
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