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 * $FreeBSD: src/sys/cam/scsi/scsi_ch.c,v 1.20.2.2 2000/10/31 08:09:49 dwmalone Exp $
28 */
29 /*
30 * Derived from the NetBSD SCSI changer driver.
31 *
32 * $NetBSD: ch.c,v 1.32 1998/01/12 09:49:12 thorpej Exp $
33 *
34 */
35 /*
36 * Copyright (c) 1996, 1997 Jason R. Thorpe <thorpej@and.com>
37 * All rights reserved.
38 *
39 * Partially based on an autochanger driver written by Stefan Grefen
40 * and on an autochanger driver written by the Systems Programming Group
41 * at the University of Utah Computer Science Department.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. All advertising materials mentioning features or use of this software
52 * must display the following acknowledgements:
53 * This product includes software developed by Jason R. Thorpe
54 * for And Communications, http://www.and.com/
55 * 4. The name of the author may not be used to endorse or promote products
56 * derived from this software without specific prior written permission.
57 *
58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
63 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
64 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
65 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
66 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
68 * SUCH DAMAGE.
69 */
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/caps.h>
80 #include <sys/buf.h>
81 #include <sys/chio.h>
82 #include <sys/errno.h>
83 #include <sys/devicestat.h>
84
85 #include "../cam.h"
86 #include "../cam_ccb.h"
87 #include "../cam_extend.h"
88 #include "../cam_periph.h"
89 #include "../cam_xpt_periph.h"
90 #include "../cam_queue.h"
91 #include "../cam_debug.h"
92
93 #include "scsi_all.h"
94 #include "scsi_message.h"
95 #include "scsi_ch.h"
96
97 /*
98 * Timeout definitions for various changer related commands. They may
99 * be too short for some devices (especially the timeout for INITIALIZE
100 * ELEMENT STATUS).
101 */
102
103 static const u_int32_t CH_TIMEOUT_MODE_SENSE = 6000;
104 static const u_int32_t CH_TIMEOUT_MOVE_MEDIUM = 100000;
105 static const u_int32_t CH_TIMEOUT_EXCHANGE_MEDIUM = 100000;
106 static const u_int32_t CH_TIMEOUT_POSITION_TO_ELEMENT = 100000;
107 static const u_int32_t CH_TIMEOUT_READ_ELEMENT_STATUS = 10000;
108 static const u_int32_t CH_TIMEOUT_SEND_VOLTAG = 10000;
109 static const u_int32_t CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS = 500000;
110
111 typedef enum {
112 CH_FLAG_INVALID = 0x001,
113 CH_FLAG_OPEN = 0x002
114 } ch_flags;
115
116 typedef enum {
117 CH_STATE_PROBE,
118 CH_STATE_NORMAL
119 } ch_state;
120
121 typedef enum {
122 CH_CCB_POLLED,
123 CH_CCB_PROBE,
124 CH_CCB_WAITING
125 } ch_ccb_types;
126
127 typedef enum {
128 CH_Q_NONE = 0x00,
129 CH_Q_NO_DBD = 0x01
130 } ch_quirks;
131
132 #define ccb_state ppriv_field0
133 #define ccb_bio ppriv_ptr1
134
135 struct scsi_mode_sense_data {
136 struct scsi_mode_header_6 header;
137 struct scsi_mode_blk_desc blk_desc;
138 union {
139 struct page_element_address_assignment ea;
140 struct page_transport_geometry_parameters tg;
141 struct page_device_capabilities cap;
142 } pages;
143 };
144
145 struct ch_softc {
146 ch_flags flags;
147 ch_state state;
148 ch_quirks quirks;
149 union ccb saved_ccb;
150 struct devstat device_stats;
151
152 int sc_picker; /* current picker */
153
154 /*
155 * The following information is obtained from the
156 * element address assignment page.
157 */
158 int sc_firsts[CHET_MAX + 1]; /* firsts */
159 int sc_counts[CHET_MAX + 1]; /* counts */
160
161 /*
162 * The following mask defines the legal combinations
163 * of elements for the MOVE MEDIUM command.
164 */
165 u_int8_t sc_movemask[CHET_MAX + 1];
166
167 /*
168 * As above, but for EXCHANGE MEDIUM.
169 */
170 u_int8_t sc_exchangemask[CHET_MAX + 1];
171
172 /*
173 * Quirks; see below. XXX KDM not implemented yet
174 */
175 int sc_settledelay; /* delay for settle */
176 };
177
178 #define CHUNIT(x) (minor((x)))
179
180 static d_open_t chopen;
181 static d_close_t chclose;
182 static d_ioctl_t chioctl;
183 static periph_init_t chinit;
184 static periph_ctor_t chregister;
185 static periph_oninv_t choninvalidate;
186 static periph_dtor_t chcleanup;
187 static periph_start_t chstart;
188 static void chasync(void *callback_arg, u_int32_t code,
189 struct cam_path *path, void *arg);
190 static void chdone(struct cam_periph *periph,
191 union ccb *done_ccb);
192 static int cherror(union ccb *ccb, u_int32_t cam_flags,
193 u_int32_t sense_flags);
194 static int chmove(struct cam_periph *periph,
195 struct changer_move *cm);
196 static int chexchange(struct cam_periph *periph,
197 struct changer_exchange *ce);
198 static int chposition(struct cam_periph *periph,
199 struct changer_position *cp);
200 static int chgetelemstatus(struct cam_periph *periph,
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
208 static struct periph_driver chdriver =
209 {
210 chinit, "ch",
211 TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0
212 };
213
214 PERIPHDRIVER_DECLARE(ch, chdriver);
215
216 static struct dev_ops ch_ops = {
217 { "ch", 0, 0 },
218 .d_open = chopen,
219 .d_close = chclose,
220 .d_ioctl = chioctl
221 };
222
223 static struct extend_array *chperiphs;
224
225 MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers");
226
227 static void
chinit(void)228 chinit(void)
229 {
230 cam_status status;
231
232 /*
233 * Create our extend array for storing the devices we attach to.
234 */
235 chperiphs = cam_extend_new();
236 if (chperiphs == NULL) {
237 kprintf("ch: Failed to alloc extend array!\n");
238 return;
239 }
240
241 /*
242 * Install a global async callback. This callback will
243 * receive async callbacks like "new device found".
244 */
245 status = xpt_register_async(AC_FOUND_DEVICE, chasync, NULL, NULL);
246
247 if (status != CAM_REQ_CMP) {
248 kprintf("ch: Failed to attach master async callback "
249 "due to status 0x%x!\n", status);
250 }
251 }
252
253 static void
choninvalidate(struct cam_periph * periph)254 choninvalidate(struct cam_periph *periph)
255 {
256 struct ch_softc *softc;
257
258 softc = (struct ch_softc *)periph->softc;
259
260 /*
261 * De-register any async callbacks.
262 */
263 xpt_register_async(0, chasync, periph, periph->path);
264
265 softc->flags |= CH_FLAG_INVALID;
266
267 xpt_print(periph->path, "lost device\n");
268
269 }
270
271 static void
chcleanup(struct cam_periph * periph)272 chcleanup(struct cam_periph *periph)
273 {
274 struct ch_softc *softc;
275
276 softc = (struct ch_softc *)periph->softc;
277
278 devstat_remove_entry(&softc->device_stats);
279 cam_extend_release(chperiphs, periph->unit_number);
280 xpt_print(periph->path, "removing device entry\n");
281 dev_ops_remove_minor(&ch_ops, periph->unit_number);
282 kfree(softc, M_DEVBUF);
283 }
284
285 static void
chasync(void * callback_arg,u_int32_t code,struct cam_path * path,void * arg)286 chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg)
287 {
288 struct cam_periph *periph;
289
290 periph = (struct cam_periph *)callback_arg;
291
292 switch(code) {
293 case AC_FOUND_DEVICE:
294 {
295 struct ccb_getdev *cgd;
296 cam_status status;
297
298 cgd = (struct ccb_getdev *)arg;
299 if (cgd == NULL)
300 break;
301
302 if (SID_TYPE(&cgd->inq_data)!= T_CHANGER)
303 break;
304
305 /*
306 * Allocate a peripheral instance for
307 * this device and start the probe
308 * process.
309 */
310 status = cam_periph_alloc(chregister, choninvalidate,
311 chcleanup, chstart, "ch",
312 CAM_PERIPH_BIO, cgd->ccb_h.path,
313 chasync, AC_FOUND_DEVICE, cgd);
314
315 if (status != CAM_REQ_CMP
316 && status != CAM_REQ_INPROG)
317 kprintf("chasync: Unable to probe new device "
318 "due to status 0x%x\n", status);
319
320 break;
321
322 }
323 default:
324 cam_periph_async(periph, code, path, arg);
325 break;
326 }
327 }
328
329 static cam_status
chregister(struct cam_periph * periph,void * arg)330 chregister(struct cam_periph *periph, void *arg)
331 {
332 struct ch_softc *softc;
333 struct ccb_getdev *cgd;
334
335 cgd = (struct ccb_getdev *)arg;
336 if (periph == NULL) {
337 kprintf("chregister: periph was NULL!!\n");
338 return(CAM_REQ_CMP_ERR);
339 }
340
341 if (cgd == NULL) {
342 kprintf("chregister: no getdev CCB, can't register device\n");
343 return(CAM_REQ_CMP_ERR);
344 }
345
346 softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
347 softc->state = CH_STATE_PROBE;
348 periph->softc = softc;
349 cam_extend_set(chperiphs, periph->unit_number, periph);
350 softc->quirks = CH_Q_NONE;
351
352 /*
353 * Changers don't have a blocksize, and obviously don't support
354 * tagged queueing.
355 */
356 cam_periph_unlock(periph);
357 devstat_add_entry(&softc->device_stats, "ch",
358 periph->unit_number, 0,
359 DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS,
360 SID_TYPE(&cgd->inq_data)| DEVSTAT_TYPE_IF_SCSI,
361 DEVSTAT_PRIORITY_OTHER);
362
363 /* Register the device */
364 make_dev(&ch_ops, periph->unit_number, UID_ROOT,
365 GID_OPERATOR, 0600, "%s%d", periph->periph_name,
366 periph->unit_number);
367 cam_periph_lock(periph);
368
369 /*
370 * Add an async callback so that we get
371 * notified if this device goes away.
372 */
373 xpt_register_async(AC_LOST_DEVICE, chasync, periph, periph->path);
374
375 /*
376 * Lock this periph until we are setup.
377 * This first call can't block
378 */
379 cam_periph_hold(periph, 0);
380 xpt_schedule(periph, /*priority*/5);
381
382 return(CAM_REQ_CMP);
383 }
384
385 static int
chopen(struct dev_open_args * ap)386 chopen(struct dev_open_args *ap)
387 {
388 cdev_t dev = ap->a_head.a_dev;
389 struct cam_periph *periph;
390 struct ch_softc *softc;
391 int unit, error;
392
393 /*
394 * Disallow CAM access if RESTRICTEDROOT
395 */
396 if (caps_priv_check_self(SYSCAP_RESTRICTEDROOT))
397 return (EPERM);
398
399 unit = CHUNIT(dev);
400 periph = cam_extend_get(chperiphs, unit);
401
402 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
403 return (ENXIO);
404
405 softc = (struct ch_softc *)periph->softc;
406
407 cam_periph_lock(periph);
408
409 if (softc->flags & CH_FLAG_INVALID) {
410 cam_periph_unlock(periph);
411 cam_periph_release(periph);
412 return(ENXIO);
413 }
414
415 if ((softc->flags & CH_FLAG_OPEN) == 0)
416 softc->flags |= CH_FLAG_OPEN;
417 else
418 cam_periph_release(periph);
419
420 if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
421 cam_periph_unlock(periph);
422 cam_periph_release(periph);
423 return (error);
424 }
425
426 /*
427 * Load information about this changer device into the softc.
428 */
429 if ((error = chgetparams(periph)) != 0) {
430 softc->flags &= ~CH_FLAG_OPEN;
431 cam_periph_unhold(periph, 1);
432 cam_periph_release(periph);
433 } else {
434 cam_periph_unhold(periph, 1);
435 }
436
437 return(error);
438 }
439
440 static int
chclose(struct dev_close_args * ap)441 chclose(struct dev_close_args *ap)
442 {
443 cdev_t dev = ap->a_head.a_dev;
444 struct cam_periph *periph;
445 struct ch_softc *softc;
446 int unit;
447
448 unit = CHUNIT(dev);
449 periph = cam_extend_get(chperiphs, unit);
450 if (periph == NULL)
451 return(ENXIO);
452
453 softc = (struct ch_softc *)periph->softc;
454
455 cam_periph_lock(periph);
456
457 softc->flags &= ~CH_FLAG_OPEN;
458
459 cam_periph_unlock(periph);
460 cam_periph_release(periph);
461
462 return(0);
463 }
464
465 static void
chstart(struct cam_periph * periph,union ccb * start_ccb)466 chstart(struct cam_periph *periph, union ccb *start_ccb)
467 {
468 struct ch_softc *softc;
469
470 softc = (struct ch_softc *)periph->softc;
471
472 switch (softc->state) {
473 case CH_STATE_NORMAL:
474 {
475 if (periph->immediate_priority <= periph->pinfo.priority){
476 start_ccb->ccb_h.ccb_state = CH_CCB_WAITING;
477
478 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
479 periph_links.sle);
480 periph->immediate_priority = CAM_PRIORITY_NONE;
481 wakeup(&periph->ccb_list);
482 }
483 break;
484 }
485 case CH_STATE_PROBE:
486 {
487 int mode_buffer_len;
488 void *mode_buffer;
489
490 /*
491 * Include the block descriptor when calculating the mode
492 * buffer length,
493 */
494 mode_buffer_len = sizeof(struct scsi_mode_header_6) +
495 sizeof(struct scsi_mode_blk_desc) +
496 sizeof(struct page_element_address_assignment);
497
498 mode_buffer = kmalloc(mode_buffer_len, M_SCSICH, M_INTWAIT | M_ZERO);
499 /*
500 * Get the element address assignment page.
501 */
502 scsi_mode_sense(&start_ccb->csio,
503 /* retries */ 1,
504 /* cbfcnp */ chdone,
505 /* tag_action */ MSG_SIMPLE_Q_TAG,
506 /* dbd */ (softc->quirks & CH_Q_NO_DBD) ?
507 FALSE : TRUE,
508 /* page_code */ SMS_PAGE_CTRL_CURRENT,
509 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE,
510 /* param_buf */ (u_int8_t *)mode_buffer,
511 /* param_len */ mode_buffer_len,
512 /* sense_len */ SSD_FULL_SIZE,
513 /* timeout */ CH_TIMEOUT_MODE_SENSE);
514
515 start_ccb->ccb_h.ccb_bio = NULL;
516 start_ccb->ccb_h.ccb_state = CH_CCB_PROBE;
517 xpt_action(start_ccb);
518 break;
519 }
520 }
521 }
522
523 static void
chdone(struct cam_periph * periph,union ccb * done_ccb)524 chdone(struct cam_periph *periph, union ccb *done_ccb)
525 {
526 struct ch_softc *softc;
527 struct ccb_scsiio *csio;
528
529 softc = (struct ch_softc *)periph->softc;
530 csio = &done_ccb->csio;
531
532 switch(done_ccb->ccb_h.ccb_state) {
533 case CH_CCB_POLLED:
534 /* Caller releases ccb */
535 wakeup(&done_ccb->ccb_h.cbfcnp);
536 return;
537 case CH_CCB_PROBE:
538 {
539 struct scsi_mode_header_6 *mode_header;
540 struct page_element_address_assignment *ea;
541 char announce_buf[80];
542
543
544 mode_header = (struct scsi_mode_header_6 *)csio->data_ptr;
545
546 ea = (struct page_element_address_assignment *)
547 find_mode_page_6(mode_header);
548
549 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){
550
551 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea);
552 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte);
553 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea);
554 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse);
555 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea);
556 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee);
557 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea);
558 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte);
559 softc->sc_picker = softc->sc_firsts[CHET_MT];
560
561 #define PLURAL(c) (c) == 1 ? "" : "s"
562 ksnprintf(announce_buf, sizeof(announce_buf),
563 "%d slot%s, %d drive%s, "
564 "%d picker%s, %d portal%s",
565 softc->sc_counts[CHET_ST],
566 PLURAL(softc->sc_counts[CHET_ST]),
567 softc->sc_counts[CHET_DT],
568 PLURAL(softc->sc_counts[CHET_DT]),
569 softc->sc_counts[CHET_MT],
570 PLURAL(softc->sc_counts[CHET_MT]),
571 softc->sc_counts[CHET_IE],
572 PLURAL(softc->sc_counts[CHET_IE]));
573 #undef PLURAL
574 } else {
575 int error;
576
577 error = cherror(done_ccb, CAM_RETRY_SELTO,
578 SF_RETRY_UA | SF_NO_PRINT);
579 /*
580 * Retry any UNIT ATTENTION type errors. They
581 * are expected at boot.
582 */
583 if (error == ERESTART) {
584 /*
585 * A retry was scheuled, so
586 * just return.
587 */
588 return;
589 } else if (error != 0) {
590 int retry_scheduled;
591 struct scsi_mode_sense_6 *sms;
592
593 sms = (struct scsi_mode_sense_6 *)
594 done_ccb->csio.cdb_io.cdb_bytes;
595
596 /*
597 * Check to see if block descriptors were
598 * disabled. Some devices don't like that.
599 * We're taking advantage of the fact that
600 * the first few bytes of the 6 and 10 byte
601 * mode sense commands are the same. If
602 * block descriptors were disabled, enable
603 * them and re-send the command.
604 */
605 if (sms->byte2 & SMS_DBD) {
606 sms->byte2 &= ~SMS_DBD;
607 xpt_action(done_ccb);
608 softc->quirks |= CH_Q_NO_DBD;
609 retry_scheduled = 1;
610 } else
611 retry_scheduled = 0;
612
613 /* Don't wedge this device's queue */
614 cam_release_devq(done_ccb->ccb_h.path,
615 /*relsim_flags*/0,
616 /*reduction*/0,
617 /*timeout*/0,
618 /*getcount_only*/0);
619
620 if (retry_scheduled)
621 return;
622
623 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK)
624 == CAM_SCSI_STATUS_ERROR)
625 scsi_sense_print(&done_ccb->csio);
626 else {
627 xpt_print(periph->path,
628 "got CAM status %#x\n",
629 done_ccb->ccb_h.status);
630 }
631 xpt_print(periph->path, "fatal error, failed "
632 "to attach to device\n");
633
634 cam_periph_invalidate(periph);
635
636 announce_buf[0] = '\0';
637 }
638 }
639 if (announce_buf[0] != '\0')
640 xpt_announce_periph(periph, announce_buf);
641 softc->state = CH_STATE_NORMAL;
642 kfree(mode_header, M_SCSICH);
643 /*
644 * Since our peripheral may be invalidated by an error
645 * above or an external event, we must release our CCB
646 * before releasing the probe lock on the peripheral.
647 * The peripheral will only go away once the last lock
648 * is removed, and we need it around for the CCB release
649 * operation.
650 */
651 xpt_release_ccb(done_ccb);
652 cam_periph_unhold(periph, 0);
653 return;
654 }
655 case CH_CCB_WAITING:
656 {
657 /* Caller will release the CCB */
658 wakeup(&done_ccb->ccb_h.cbfcnp);
659 return;
660 }
661 default:
662 break;
663 }
664 xpt_release_ccb(done_ccb);
665 }
666
667 static int
cherror(union ccb * ccb,u_int32_t cam_flags,u_int32_t sense_flags)668 cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
669 {
670 struct ch_softc *softc;
671 struct cam_periph *periph;
672
673 periph = xpt_path_periph(ccb->ccb_h.path);
674 softc = (struct ch_softc *)periph->softc;
675
676 return (cam_periph_error(ccb, cam_flags, sense_flags,
677 &softc->saved_ccb));
678 }
679
680 static int
chioctl(struct dev_ioctl_args * ap)681 chioctl(struct dev_ioctl_args *ap)
682 {
683 cdev_t dev = ap->a_head.a_dev;
684 caddr_t addr = ap->a_data;
685 int flag = ap->a_fflag;
686 struct cam_periph *periph;
687 struct ch_softc *softc;
688 u_int8_t unit;
689 int error;
690
691 unit = CHUNIT(dev);
692
693 periph = cam_extend_get(chperiphs, unit);
694 if (periph == NULL)
695 return(ENXIO);
696
697 cam_periph_lock(periph);
698 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n"));
699
700 softc = (struct ch_softc *)periph->softc;
701
702 error = 0;
703
704 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
705 ("trying to do ioctl %#lx\n", ap->a_cmd));
706
707 /*
708 * If this command can change the device's state, we must
709 * have the device open for writing.
710 */
711 switch (ap->a_cmd) {
712 case CHIOGPICKER:
713 case CHIOGPARAMS:
714 case CHIOGSTATUS:
715 break;
716
717 default:
718 if ((flag & FWRITE) == 0) {
719 cam_periph_unlock(periph);
720 return (EBADF);
721 }
722 }
723
724 switch (ap->a_cmd) {
725 case CHIOMOVE:
726 error = chmove(periph, (struct changer_move *)addr);
727 break;
728
729 case CHIOEXCHANGE:
730 error = chexchange(periph, (struct changer_exchange *)addr);
731 break;
732
733 case CHIOPOSITION:
734 error = chposition(periph, (struct changer_position *)addr);
735 break;
736
737 case CHIOGPICKER:
738 *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT];
739 break;
740
741 case CHIOSPICKER:
742 {
743 int new_picker = *(int *)addr;
744
745 if (new_picker > (softc->sc_counts[CHET_MT] - 1)) {
746 error = EINVAL;
747 break;
748 }
749 softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker;
750 break;
751 }
752 case CHIOGPARAMS:
753 {
754 struct changer_params *cp = (struct changer_params *)addr;
755
756 cp->cp_npickers = softc->sc_counts[CHET_MT];
757 cp->cp_nslots = softc->sc_counts[CHET_ST];
758 cp->cp_nportals = softc->sc_counts[CHET_IE];
759 cp->cp_ndrives = softc->sc_counts[CHET_DT];
760 break;
761 }
762 case CHIOIELEM:
763 error = chielem(periph, *(unsigned int *)addr);
764 break;
765
766 case CHIOGSTATUS:
767 {
768 error = chgetelemstatus(periph,
769 (struct changer_element_status_request *) addr);
770 break;
771 }
772
773 case CHIOSETVOLTAG:
774 {
775 error = chsetvoltag(periph,
776 (struct changer_set_voltag_request *) addr);
777 break;
778 }
779
780 /* Implement prevent/allow? */
781
782 default:
783 error = cam_periph_ioctl(periph, ap->a_cmd, addr, cherror);
784 break;
785 }
786
787 cam_periph_unlock(periph);
788 return (error);
789 }
790
791 static int
chmove(struct cam_periph * periph,struct changer_move * cm)792 chmove(struct cam_periph *periph, struct changer_move *cm)
793 {
794 struct ch_softc *softc;
795 u_int16_t fromelem, toelem;
796 union ccb *ccb;
797 int error;
798
799 error = 0;
800 softc = (struct ch_softc *)periph->softc;
801
802 /*
803 * Check arguments.
804 */
805 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT))
806 return (EINVAL);
807 if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) ||
808 (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1)))
809 return (ENODEV);
810
811 /*
812 * Check the request against the changer's capabilities.
813 */
814 if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0)
815 return (ENODEV);
816
817 /*
818 * Calculate the source and destination elements.
819 */
820 fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit;
821 toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit;
822
823 ccb = cam_periph_getccb(periph, /*priority*/ 1);
824 ccb->ccb_h.ccb_state = CH_CCB_POLLED;
825
826 scsi_move_medium(&ccb->csio,
827 /* retries */ 1,
828 /* cbfcnp */ chdone,
829 /* tag_action */ MSG_SIMPLE_Q_TAG,
830 /* tea */ softc->sc_picker,
831 /* src */ fromelem,
832 /* dst */ toelem,
833 /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE,
834 /* sense_len */ SSD_FULL_SIZE,
835 /* timeout */ CH_TIMEOUT_MOVE_MEDIUM);
836
837 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO,
838 /*sense_flags*/ SF_RETRY_UA,
839 &softc->device_stats);
840
841 xpt_release_ccb(ccb);
842
843 return(error);
844 }
845
846 static int
chexchange(struct cam_periph * periph,struct changer_exchange * ce)847 chexchange(struct cam_periph *periph, struct changer_exchange *ce)
848 {
849 struct ch_softc *softc;
850 u_int16_t src, dst1, dst2;
851 union ccb *ccb;
852 int error;
853
854 error = 0;
855 softc = (struct ch_softc *)periph->softc;
856 /*
857 * Check arguments.
858 */
859 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) ||
860 (ce->ce_sdsttype > CHET_DT))
861 return (EINVAL);
862 if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) ||
863 (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) ||
864 (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1)))
865 return (ENODEV);
866
867 /*
868 * Check the request against the changer's capabilities.
869 */
870 if (((softc->sc_exchangemask[ce->ce_srctype] &
871 (1 << ce->ce_fdsttype)) == 0) ||
872 ((softc->sc_exchangemask[ce->ce_fdsttype] &
873 (1 << ce->ce_sdsttype)) == 0))
874 return (ENODEV);
875
876 /*
877 * Calculate the source and destination elements.
878 */
879 src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit;
880 dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit;
881 dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit;
882
883 ccb = cam_periph_getccb(periph, /*priority*/ 1);
884 ccb->ccb_h.ccb_state = CH_CCB_POLLED;
885
886 scsi_exchange_medium(&ccb->csio,
887 /* retries */ 1,
888 /* cbfcnp */ chdone,
889 /* tag_action */ MSG_SIMPLE_Q_TAG,
890 /* tea */ softc->sc_picker,
891 /* src */ src,
892 /* dst1 */ dst1,
893 /* dst2 */ dst2,
894 /* invert1 */ (ce->ce_flags & CE_INVERT1) ?
895 TRUE : FALSE,
896 /* invert2 */ (ce->ce_flags & CE_INVERT2) ?
897 TRUE : FALSE,
898 /* sense_len */ SSD_FULL_SIZE,
899 /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM);
900
901 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO,
902 /*sense_flags*/ SF_RETRY_UA,
903 &softc->device_stats);
904
905 xpt_release_ccb(ccb);
906
907 return(error);
908 }
909
910 static int
chposition(struct cam_periph * periph,struct changer_position * cp)911 chposition(struct cam_periph *periph, struct changer_position *cp)
912 {
913 struct ch_softc *softc;
914 u_int16_t dst;
915 union ccb *ccb;
916 int error;
917
918 error = 0;
919 softc = (struct ch_softc *)periph->softc;
920
921 /*
922 * Check arguments.
923 */
924 if (cp->cp_type > CHET_DT)
925 return (EINVAL);
926 if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1))
927 return (ENODEV);
928
929 /*
930 * Calculate the destination element.
931 */
932 dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit;
933
934 ccb = cam_periph_getccb(periph, /*priority*/ 1);
935 ccb->ccb_h.ccb_state = CH_CCB_POLLED;
936
937 scsi_position_to_element(&ccb->csio,
938 /* retries */ 1,
939 /* cbfcnp */ chdone,
940 /* tag_action */ MSG_SIMPLE_Q_TAG,
941 /* tea */ softc->sc_picker,
942 /* dst */ dst,
943 /* invert */ (cp->cp_flags & CP_INVERT) ?
944 TRUE : FALSE,
945 /* sense_len */ SSD_FULL_SIZE,
946 /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT);
947
948 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
949 /*sense_flags*/ SF_RETRY_UA,
950 &softc->device_stats);
951
952 xpt_release_ccb(ccb);
953
954 return(error);
955 }
956
957 /*
958 * Copy a volume tag to a volume_tag struct, converting SCSI byte order
959 * to host native byte order in the volume serial number. The volume
960 * label as returned by the changer is transferred to user mode as
961 * nul-terminated string. Volume labels are truncated at the first
962 * space, as suggested by SCSI-2.
963 */
964 static void
copy_voltag(struct changer_voltag * uvoltag,struct volume_tag * voltag)965 copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag)
966 {
967 int i;
968 for (i=0; i<CH_VOLTAG_MAXLEN; i++) {
969 char c = voltag->vif[i];
970 if (c && c != ' ')
971 uvoltag->cv_volid[i] = c;
972 else
973 break;
974 }
975 uvoltag->cv_serial = scsi_2btoul(voltag->vsn);
976 }
977
978 /*
979 * Copy an an element status descriptor to a user-mode
980 * changer_element_status structure.
981 */
982
983 static void
copy_element_status(struct ch_softc * softc,u_int16_t flags,struct read_element_status_descriptor * desc,struct changer_element_status * ces)984 copy_element_status(struct ch_softc *softc,
985 u_int16_t flags,
986 struct read_element_status_descriptor *desc,
987 struct changer_element_status *ces)
988 {
989 u_int16_t eaddr = scsi_2btoul(desc->eaddr);
990 u_int16_t et;
991
992 ces->ces_int_addr = eaddr;
993 /* set up logical address in element status */
994 for (et = CHET_MT; et <= CHET_DT; et++) {
995 if ((softc->sc_firsts[et] <= eaddr)
996 && ((softc->sc_firsts[et] + softc->sc_counts[et])
997 > eaddr)) {
998 ces->ces_addr = eaddr - softc->sc_firsts[et];
999 ces->ces_type = et;
1000 break;
1001 }
1002 }
1003
1004 ces->ces_flags = desc->flags1;
1005
1006 ces->ces_sensecode = desc->sense_code;
1007 ces->ces_sensequal = desc->sense_qual;
1008
1009 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT)
1010 ces->ces_flags |= CES_INVERT;
1011
1012 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) {
1013
1014 eaddr = scsi_2btoul(desc->ssea);
1015
1016 /* convert source address to logical format */
1017 for (et = CHET_MT; et <= CHET_DT; et++) {
1018 if ((softc->sc_firsts[et] <= eaddr)
1019 && ((softc->sc_firsts[et] + softc->sc_counts[et])
1020 > eaddr)) {
1021 ces->ces_source_addr =
1022 eaddr - softc->sc_firsts[et];
1023 ces->ces_source_type = et;
1024 ces->ces_flags |= CES_SOURCE_VALID;
1025 break;
1026 }
1027 }
1028
1029 if (!(ces->ces_flags & CES_SOURCE_VALID))
1030 kprintf("ch: warning: could not map element source "
1031 "address %ud to a valid element type\n",
1032 eaddr);
1033 }
1034
1035
1036 if (flags & READ_ELEMENT_STATUS_PVOLTAG)
1037 copy_voltag(&(ces->ces_pvoltag), &(desc->pvoltag));
1038 if (flags & READ_ELEMENT_STATUS_AVOLTAG)
1039 copy_voltag(&(ces->ces_avoltag), &(desc->avoltag));
1040
1041 if (desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_IDVALID) {
1042 ces->ces_flags |= CES_SCSIID_VALID;
1043 ces->ces_scsi_id = desc->dt_scsi_addr;
1044 }
1045
1046 if (desc->dt_scsi_addr & READ_ELEMENT_STATUS_DT_LUVALID) {
1047 ces->ces_flags |= CES_LUN_VALID;
1048 ces->ces_scsi_lun =
1049 desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_LUNMASK;
1050 }
1051 }
1052
1053 static int
chgetelemstatus(struct cam_periph * periph,struct changer_element_status_request * cesr)1054 chgetelemstatus(struct cam_periph *periph,
1055 struct changer_element_status_request *cesr)
1056 {
1057 struct read_element_status_header *st_hdr;
1058 struct read_element_status_page_header *pg_hdr;
1059 struct read_element_status_descriptor *desc;
1060 caddr_t data = NULL;
1061 size_t size, desclen;
1062 int avail, i, error = 0;
1063 struct changer_element_status *user_data = NULL;
1064 struct ch_softc *softc;
1065 union ccb *ccb;
1066 int chet = cesr->cesr_element_type;
1067 int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0;
1068
1069 softc = (struct ch_softc *)periph->softc;
1070
1071 /* perform argument checking */
1072
1073 /*
1074 * Perform a range check on the cesr_element_{base,count}
1075 * request argument fields.
1076 */
1077 if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0
1078 || (cesr->cesr_element_base + cesr->cesr_element_count)
1079 > softc->sc_counts[chet])
1080 return (EINVAL);
1081
1082 /*
1083 * Request one descriptor for the given element type. This
1084 * is used to determine the size of the descriptor so that
1085 * we can allocate enough storage for all of them. We assume
1086 * that the first one can fit into 1k.
1087 */
1088 cam_periph_unlock(periph);
1089 data = (caddr_t)kmalloc(1024, M_DEVBUF, M_INTWAIT);
1090
1091 cam_periph_lock(periph);
1092 ccb = cam_periph_getccb(periph, /*priority*/ 1);
1093 ccb->ccb_h.ccb_state = CH_CCB_POLLED;
1094
1095 scsi_read_element_status(&ccb->csio,
1096 /* retries */ 1,
1097 /* cbfcnp */ chdone,
1098 /* tag_action */ MSG_SIMPLE_Q_TAG,
1099 /* voltag */ want_voltags,
1100 /* sea */ softc->sc_firsts[chet],
1101 /* count */ 1,
1102 /* data_ptr */ data,
1103 /* dxfer_len */ 1024,
1104 /* sense_len */ SSD_FULL_SIZE,
1105 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS);
1106
1107 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1108 /*sense_flags*/ SF_RETRY_UA,
1109 &softc->device_stats);
1110
1111 if (error)
1112 goto done;
1113 cam_periph_unlock(periph);
1114
1115 st_hdr = (struct read_element_status_header *)data;
1116 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr +
1117 sizeof(struct read_element_status_header));
1118 desclen = scsi_2btoul(pg_hdr->edl);
1119
1120 size = sizeof(struct read_element_status_header) +
1121 sizeof(struct read_element_status_page_header) +
1122 (desclen * cesr->cesr_element_count);
1123
1124 /*
1125 * Reallocate storage for descriptors and get them from the
1126 * device.
1127 */
1128 kfree(data, M_DEVBUF);
1129 data = (caddr_t)kmalloc(size, M_DEVBUF, M_INTWAIT);
1130
1131 cam_periph_lock(periph);
1132 scsi_read_element_status(&ccb->csio,
1133 /* retries */ 1,
1134 /* cbfcnp */ chdone,
1135 /* tag_action */ MSG_SIMPLE_Q_TAG,
1136 /* voltag */ want_voltags,
1137 /* sea */ softc->sc_firsts[chet]
1138 + cesr->cesr_element_base,
1139 /* count */ cesr->cesr_element_count,
1140 /* data_ptr */ data,
1141 /* dxfer_len */ size,
1142 /* sense_len */ SSD_FULL_SIZE,
1143 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS);
1144
1145 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1146 /*sense_flags*/ SF_RETRY_UA,
1147 &softc->device_stats);
1148
1149 if (error)
1150 goto done;
1151 cam_periph_unlock(periph);
1152
1153 /*
1154 * Fill in the user status array.
1155 */
1156 st_hdr = (struct read_element_status_header *)data;
1157 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr +
1158 sizeof(struct read_element_status_header));
1159 avail = scsi_2btoul(st_hdr->count);
1160
1161 if (avail != cesr->cesr_element_count) {
1162 xpt_print(periph->path,
1163 "warning, READ ELEMENT STATUS avail != count\n");
1164 }
1165
1166 user_data = (struct changer_element_status *)
1167 kmalloc(avail * sizeof(struct changer_element_status),
1168 M_DEVBUF, M_INTWAIT | M_ZERO);
1169
1170 desc = (struct read_element_status_descriptor *)((uintptr_t)data +
1171 sizeof(struct read_element_status_header) +
1172 sizeof(struct read_element_status_page_header));
1173 /*
1174 * Set up the individual element status structures
1175 */
1176 for (i = 0; i < avail; ++i) {
1177 struct changer_element_status *ces = &(user_data[i]);
1178
1179 copy_element_status(softc, pg_hdr->flags, desc, ces);
1180
1181 desc = (struct read_element_status_descriptor *)
1182 ((uintptr_t)desc + desclen);
1183 }
1184
1185 /* Copy element status structures out to userspace. */
1186 error = copyout(user_data,
1187 cesr->cesr_element_status,
1188 avail * sizeof(struct changer_element_status));
1189 cam_periph_lock(periph);
1190
1191 done:
1192 xpt_release_ccb(ccb);
1193
1194 if (data != NULL)
1195 kfree(data, M_DEVBUF);
1196 if (user_data != NULL)
1197 kfree(user_data, M_DEVBUF);
1198
1199 return (error);
1200 }
1201
1202 static int
chielem(struct cam_periph * periph,unsigned int timeout)1203 chielem(struct cam_periph *periph,
1204 unsigned int timeout)
1205 {
1206 union ccb *ccb;
1207 struct ch_softc *softc;
1208 int error;
1209
1210 if (!timeout) {
1211 timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS;
1212 } else {
1213 timeout *= 1000;
1214 }
1215
1216 error = 0;
1217 softc = (struct ch_softc *)periph->softc;
1218
1219 ccb = cam_periph_getccb(periph, /*priority*/ 1);
1220 ccb->ccb_h.ccb_state = CH_CCB_POLLED;
1221
1222 scsi_initialize_element_status(&ccb->csio,
1223 /* retries */ 1,
1224 /* cbfcnp */ chdone,
1225 /* tag_action */ MSG_SIMPLE_Q_TAG,
1226 /* sense_len */ SSD_FULL_SIZE,
1227 /* timeout */ timeout);
1228
1229 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1230 /*sense_flags*/ SF_RETRY_UA,
1231 &softc->device_stats);
1232
1233 xpt_release_ccb(ccb);
1234
1235 return(error);
1236 }
1237
1238 static int
chsetvoltag(struct cam_periph * periph,struct changer_set_voltag_request * csvr)1239 chsetvoltag(struct cam_periph *periph,
1240 struct changer_set_voltag_request *csvr)
1241 {
1242 union ccb *ccb;
1243 struct ch_softc *softc;
1244 u_int16_t ea;
1245 u_int8_t sac;
1246 struct scsi_send_volume_tag_parameters ssvtp;
1247 int error;
1248 int i;
1249
1250 error = 0;
1251 softc = (struct ch_softc *)periph->softc;
1252
1253 bzero(&ssvtp, sizeof(ssvtp));
1254 for (i=0; i<sizeof(ssvtp.vitf); i++) {
1255 ssvtp.vitf[i] = ' ';
1256 }
1257
1258 /*
1259 * Check arguments.
1260 */
1261 if (csvr->csvr_type > CHET_DT)
1262 return EINVAL;
1263 if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1))
1264 return ENODEV;
1265
1266 ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr;
1267
1268 if (csvr->csvr_flags & CSVR_ALTERNATE) {
1269 switch (csvr->csvr_flags & CSVR_MODE_MASK) {
1270 case CSVR_MODE_SET:
1271 sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE;
1272 break;
1273 case CSVR_MODE_REPLACE:
1274 sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE;
1275 break;
1276 case CSVR_MODE_CLEAR:
1277 sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE;
1278 break;
1279 default:
1280 error = EINVAL;
1281 goto out;
1282 }
1283 } else {
1284 switch (csvr->csvr_flags & CSVR_MODE_MASK) {
1285 case CSVR_MODE_SET:
1286 sac = SEND_VOLUME_TAG_ASSERT_PRIMARY;
1287 break;
1288 case CSVR_MODE_REPLACE:
1289 sac = SEND_VOLUME_TAG_REPLACE_PRIMARY;
1290 break;
1291 case CSVR_MODE_CLEAR:
1292 sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY;
1293 break;
1294 default:
1295 error = EINVAL;
1296 goto out;
1297 }
1298 }
1299
1300 memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid,
1301 min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf)));
1302 scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn);
1303
1304 ccb = cam_periph_getccb(periph, /*priority*/ 1);
1305 ccb->ccb_h.ccb_state = CH_CCB_POLLED;
1306
1307 scsi_send_volume_tag(&ccb->csio,
1308 /* retries */ 1,
1309 /* cbfcnp */ chdone,
1310 /* tag_action */ MSG_SIMPLE_Q_TAG,
1311 /* element_address */ ea,
1312 /* send_action_code */ sac,
1313 /* parameters */ &ssvtp,
1314 /* sense_len */ SSD_FULL_SIZE,
1315 /* timeout */ CH_TIMEOUT_SEND_VOLTAG);
1316
1317 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1318 /*sense_flags*/ SF_RETRY_UA,
1319 &softc->device_stats);
1320
1321 xpt_release_ccb(ccb);
1322
1323 out:
1324 return error;
1325 }
1326
1327 static int
chgetparams(struct cam_periph * periph)1328 chgetparams(struct cam_periph *periph)
1329 {
1330 union ccb *ccb;
1331 struct ch_softc *softc;
1332 void *mode_buffer;
1333 int mode_buffer_len;
1334 struct page_element_address_assignment *ea;
1335 struct page_device_capabilities *cap;
1336 int error, from, dbd;
1337 u_int8_t *moves, *exchanges;
1338
1339 error = 0;
1340
1341 softc = (struct ch_softc *)periph->softc;
1342
1343 ccb = cam_periph_getccb(periph, /*priority*/ 1);
1344 ccb->ccb_h.ccb_state = CH_CCB_POLLED;
1345
1346 /*
1347 * The scsi_mode_sense_data structure is just a convenience
1348 * structure that allows us to easily calculate the worst-case
1349 * storage size of the mode sense buffer.
1350 */
1351 mode_buffer_len = sizeof(struct scsi_mode_sense_data);
1352
1353 mode_buffer = kmalloc(mode_buffer_len, M_SCSICH, M_INTWAIT | M_ZERO);
1354
1355 if (softc->quirks & CH_Q_NO_DBD)
1356 dbd = FALSE;
1357 else
1358 dbd = TRUE;
1359
1360 /*
1361 * Get the element address assignment page.
1362 */
1363 scsi_mode_sense(&ccb->csio,
1364 /* retries */ 1,
1365 /* cbfcnp */ chdone,
1366 /* tag_action */ MSG_SIMPLE_Q_TAG,
1367 /* dbd */ dbd,
1368 /* page_code */ SMS_PAGE_CTRL_CURRENT,
1369 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE,
1370 /* param_buf */ (u_int8_t *)mode_buffer,
1371 /* param_len */ mode_buffer_len,
1372 /* sense_len */ SSD_FULL_SIZE,
1373 /* timeout */ CH_TIMEOUT_MODE_SENSE);
1374
1375 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1376 /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT,
1377 &softc->device_stats);
1378
1379 if (error) {
1380 if (dbd) {
1381 struct scsi_mode_sense_6 *sms;
1382
1383 sms = (struct scsi_mode_sense_6 *)
1384 ccb->csio.cdb_io.cdb_bytes;
1385
1386 sms->byte2 &= ~SMS_DBD;
1387 error = cam_periph_runccb(ccb, cherror,
1388 /*cam_flags*/ CAM_RETRY_SELTO,
1389 /*sense_flags*/ SF_RETRY_UA,
1390 &softc->device_stats);
1391 } else {
1392 /*
1393 * Since we disabled sense printing above, print
1394 * out the sense here since we got an error.
1395 */
1396 scsi_sense_print(&ccb->csio);
1397 }
1398
1399 if (error) {
1400 xpt_print(periph->path,
1401 "chgetparams: error getting element "
1402 "address page\n");
1403 xpt_release_ccb(ccb);
1404 kfree(mode_buffer, M_SCSICH);
1405 return(error);
1406 }
1407 }
1408
1409 ea = (struct page_element_address_assignment *)
1410 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer);
1411
1412 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea);
1413 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte);
1414 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea);
1415 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse);
1416 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea);
1417 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee);
1418 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea);
1419 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte);
1420
1421 bzero(mode_buffer, mode_buffer_len);
1422
1423 /*
1424 * Now get the device capabilities page.
1425 */
1426 scsi_mode_sense(&ccb->csio,
1427 /* retries */ 1,
1428 /* cbfcnp */ chdone,
1429 /* tag_action */ MSG_SIMPLE_Q_TAG,
1430 /* dbd */ dbd,
1431 /* page_code */ SMS_PAGE_CTRL_CURRENT,
1432 /* page */ CH_DEVICE_CAP_PAGE,
1433 /* param_buf */ (u_int8_t *)mode_buffer,
1434 /* param_len */ mode_buffer_len,
1435 /* sense_len */ SSD_FULL_SIZE,
1436 /* timeout */ CH_TIMEOUT_MODE_SENSE);
1437
1438 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO,
1439 /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT,
1440 &softc->device_stats);
1441
1442 if (error) {
1443 if (dbd) {
1444 struct scsi_mode_sense_6 *sms;
1445
1446 sms = (struct scsi_mode_sense_6 *)
1447 ccb->csio.cdb_io.cdb_bytes;
1448
1449 sms->byte2 &= ~SMS_DBD;
1450 error = cam_periph_runccb(ccb, cherror,
1451 /*cam_flags*/ CAM_RETRY_SELTO,
1452 /*sense_flags*/ SF_RETRY_UA,
1453 &softc->device_stats);
1454 } else {
1455 /*
1456 * Since we disabled sense printing above, print
1457 * out the sense here since we got an error.
1458 */
1459 scsi_sense_print(&ccb->csio);
1460 }
1461
1462 if (error) {
1463 xpt_print(periph->path,
1464 "chgetparams: error getting device "
1465 "capabilities page\n");
1466 xpt_release_ccb(ccb);
1467 kfree(mode_buffer, M_SCSICH);
1468 return(error);
1469 }
1470 }
1471
1472 xpt_release_ccb(ccb);
1473
1474 cap = (struct page_device_capabilities *)
1475 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer);
1476
1477 bzero(softc->sc_movemask, sizeof(softc->sc_movemask));
1478 bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask));
1479 moves = cap->move_from;
1480 exchanges = cap->exchange_with;
1481 for (from = CHET_MT; from <= CHET_MAX; ++from) {
1482 softc->sc_movemask[from] = moves[from];
1483 softc->sc_exchangemask[from] = exchanges[from];
1484 }
1485
1486 kfree(mode_buffer, M_SCSICH);
1487
1488 return(error);
1489 }
1490
1491 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)1492 scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries,
1493 void (*cbfcnp)(struct cam_periph *, union ccb *),
1494 u_int8_t tag_action, u_int32_t tea, u_int32_t src,
1495 u_int32_t dst, int invert, u_int8_t sense_len,
1496 u_int32_t timeout)
1497 {
1498 struct scsi_move_medium *scsi_cmd;
1499
1500 scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes;
1501 bzero(scsi_cmd, sizeof(*scsi_cmd));
1502
1503 scsi_cmd->opcode = MOVE_MEDIUM;
1504
1505 scsi_ulto2b(tea, scsi_cmd->tea);
1506 scsi_ulto2b(src, scsi_cmd->src);
1507 scsi_ulto2b(dst, scsi_cmd->dst);
1508
1509 if (invert)
1510 scsi_cmd->invert |= MOVE_MEDIUM_INVERT;
1511
1512 cam_fill_csio(csio,
1513 retries,
1514 cbfcnp,
1515 /*flags*/ CAM_DIR_NONE,
1516 tag_action,
1517 /*data_ptr*/ NULL,
1518 /*dxfer_len*/ 0,
1519 sense_len,
1520 sizeof(*scsi_cmd),
1521 timeout);
1522 }
1523
1524 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)1525 scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries,
1526 void (*cbfcnp)(struct cam_periph *, union ccb *),
1527 u_int8_t tag_action, u_int32_t tea, u_int32_t src,
1528 u_int32_t dst1, u_int32_t dst2, int invert1,
1529 int invert2, u_int8_t sense_len, u_int32_t timeout)
1530 {
1531 struct scsi_exchange_medium *scsi_cmd;
1532
1533 scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes;
1534 bzero(scsi_cmd, sizeof(*scsi_cmd));
1535
1536 scsi_cmd->opcode = EXCHANGE_MEDIUM;
1537
1538 scsi_ulto2b(tea, scsi_cmd->tea);
1539 scsi_ulto2b(src, scsi_cmd->src);
1540 scsi_ulto2b(dst1, scsi_cmd->fdst);
1541 scsi_ulto2b(dst2, scsi_cmd->sdst);
1542
1543 if (invert1)
1544 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1;
1545
1546 if (invert2)
1547 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2;
1548
1549 cam_fill_csio(csio,
1550 retries,
1551 cbfcnp,
1552 /*flags*/ CAM_DIR_NONE,
1553 tag_action,
1554 /*data_ptr*/ NULL,
1555 /*dxfer_len*/ 0,
1556 sense_len,
1557 sizeof(*scsi_cmd),
1558 timeout);
1559 }
1560
1561 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)1562 scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries,
1563 void (*cbfcnp)(struct cam_periph *, union ccb *),
1564 u_int8_t tag_action, u_int32_t tea, u_int32_t dst,
1565 int invert, u_int8_t sense_len, u_int32_t timeout)
1566 {
1567 struct scsi_position_to_element *scsi_cmd;
1568
1569 scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes;
1570 bzero(scsi_cmd, sizeof(*scsi_cmd));
1571
1572 scsi_cmd->opcode = POSITION_TO_ELEMENT;
1573
1574 scsi_ulto2b(tea, scsi_cmd->tea);
1575 scsi_ulto2b(dst, scsi_cmd->dst);
1576
1577 if (invert)
1578 scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT;
1579
1580 cam_fill_csio(csio,
1581 retries,
1582 cbfcnp,
1583 /*flags*/ CAM_DIR_NONE,
1584 tag_action,
1585 /*data_ptr*/ NULL,
1586 /*dxfer_len*/ 0,
1587 sense_len,
1588 sizeof(*scsi_cmd),
1589 timeout);
1590 }
1591
1592 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,u_int32_t count,u_int8_t * data_ptr,u_int32_t dxfer_len,u_int8_t sense_len,u_int32_t timeout)1593 scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries,
1594 void (*cbfcnp)(struct cam_periph *, union ccb *),
1595 u_int8_t tag_action, int voltag, u_int32_t sea,
1596 u_int32_t count, u_int8_t *data_ptr,
1597 u_int32_t dxfer_len, u_int8_t sense_len,
1598 u_int32_t timeout)
1599 {
1600 struct scsi_read_element_status *scsi_cmd;
1601
1602 scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes;
1603 bzero(scsi_cmd, sizeof(*scsi_cmd));
1604
1605 scsi_cmd->opcode = READ_ELEMENT_STATUS;
1606
1607 scsi_ulto2b(sea, scsi_cmd->sea);
1608 scsi_ulto2b(count, scsi_cmd->count);
1609 scsi_ulto3b(dxfer_len, scsi_cmd->len);
1610
1611 if (voltag)
1612 scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG;
1613
1614 cam_fill_csio(csio,
1615 retries,
1616 cbfcnp,
1617 /*flags*/ CAM_DIR_IN,
1618 tag_action,
1619 data_ptr,
1620 dxfer_len,
1621 sense_len,
1622 sizeof(*scsi_cmd),
1623 timeout);
1624 }
1625
1626 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)1627 scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries,
1628 void (*cbfcnp)(struct cam_periph *, union ccb *),
1629 u_int8_t tag_action, u_int8_t sense_len,
1630 u_int32_t timeout)
1631 {
1632 struct scsi_initialize_element_status *scsi_cmd;
1633
1634 scsi_cmd = (struct scsi_initialize_element_status *)
1635 &csio->cdb_io.cdb_bytes;
1636 bzero(scsi_cmd, sizeof(*scsi_cmd));
1637
1638 scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS;
1639
1640 cam_fill_csio(csio,
1641 retries,
1642 cbfcnp,
1643 /*flags*/ CAM_DIR_NONE,
1644 tag_action,
1645 /* data_ptr */ NULL,
1646 /* dxfer_len */ 0,
1647 sense_len,
1648 sizeof(*scsi_cmd),
1649 timeout);
1650 }
1651
1652 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)1653 scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries,
1654 void (*cbfcnp)(struct cam_periph *, union ccb *),
1655 u_int8_t tag_action,
1656 u_int16_t element_address,
1657 u_int8_t send_action_code,
1658 struct scsi_send_volume_tag_parameters *parameters,
1659 u_int8_t sense_len, u_int32_t timeout)
1660 {
1661 struct scsi_send_volume_tag *scsi_cmd;
1662
1663 scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes;
1664 bzero(scsi_cmd, sizeof(*scsi_cmd));
1665
1666 scsi_cmd->opcode = SEND_VOLUME_TAG;
1667 scsi_ulto2b(element_address, scsi_cmd->ea);
1668 scsi_cmd->sac = send_action_code;
1669 scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll);
1670
1671 cam_fill_csio(csio,
1672 retries,
1673 cbfcnp,
1674 /*flags*/ CAM_DIR_OUT,
1675 tag_action,
1676 /* data_ptr */ (u_int8_t *) parameters,
1677 sizeof(*parameters),
1678 sense_len,
1679 sizeof(*scsi_cmd),
1680 timeout);
1681 }
1682