FreeBSD/Linux Kernel Cross Reference
sys/cam/scsi/scsi_sa.c
1 /*-
2 * Implementation of SCSI Sequential Access Peripheral driver for CAM.
3 *
4 * Copyright (c) 1999, 2000 Matthew Jacob
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD: releng/10.0/sys/cam/scsi/scsi_sa.c 257049 2013-10-24 10:33:31Z mav $");
31
32 #include <sys/param.h>
33 #include <sys/queue.h>
34 #ifdef _KERNEL
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #endif
38 #include <sys/types.h>
39 #include <sys/time.h>
40 #include <sys/bio.h>
41 #include <sys/limits.h>
42 #include <sys/malloc.h>
43 #include <sys/mtio.h>
44 #ifdef _KERNEL
45 #include <sys/conf.h>
46 #include <sys/sysctl.h>
47 #include <sys/taskqueue.h>
48 #endif
49 #include <sys/fcntl.h>
50 #include <sys/devicestat.h>
51
52 #ifndef _KERNEL
53 #include <stdio.h>
54 #include <string.h>
55 #endif
56
57 #include <cam/cam.h>
58 #include <cam/cam_ccb.h>
59 #include <cam/cam_periph.h>
60 #include <cam/cam_xpt_periph.h>
61 #include <cam/cam_debug.h>
62
63 #include <cam/scsi/scsi_all.h>
64 #include <cam/scsi/scsi_message.h>
65 #include <cam/scsi/scsi_sa.h>
66
67 #ifdef _KERNEL
68
69 #include <opt_sa.h>
70
71 #ifndef SA_IO_TIMEOUT
72 #define SA_IO_TIMEOUT 4
73 #endif
74 #ifndef SA_SPACE_TIMEOUT
75 #define SA_SPACE_TIMEOUT 1 * 60
76 #endif
77 #ifndef SA_REWIND_TIMEOUT
78 #define SA_REWIND_TIMEOUT 2 * 60
79 #endif
80 #ifndef SA_ERASE_TIMEOUT
81 #define SA_ERASE_TIMEOUT 4 * 60
82 #endif
83
84 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */
85
86 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000)
87 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000)
88 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000)
89 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000)
90
91 /*
92 * Additional options that can be set for config: SA_1FM_AT_EOT
93 */
94
95 #ifndef UNUSED_PARAMETER
96 #define UNUSED_PARAMETER(x) x = x
97 #endif
98
99 #define QFRLS(ccb) \
100 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \
101 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE)
102
103 /*
104 * Driver states
105 */
106
107 static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers");
108
109 typedef enum {
110 SA_STATE_NORMAL, SA_STATE_ABNORMAL
111 } sa_state;
112
113 #define ccb_pflags ppriv_field0
114 #define ccb_bp ppriv_ptr1
115
116 #define SA_CCB_BUFFER_IO 0x0
117 #define SA_CCB_WAITING 0x1
118 #define SA_CCB_TYPEMASK 0x1
119 #define SA_POSITION_UPDATED 0x2
120
121 #define Set_CCB_Type(x, type) \
122 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \
123 x->ccb_h.ccb_pflags |= type
124
125 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK)
126
127
128
129 typedef enum {
130 SA_FLAG_OPEN = 0x0001,
131 SA_FLAG_FIXED = 0x0002,
132 SA_FLAG_TAPE_LOCKED = 0x0004,
133 SA_FLAG_TAPE_MOUNTED = 0x0008,
134 SA_FLAG_TAPE_WP = 0x0010,
135 SA_FLAG_TAPE_WRITTEN = 0x0020,
136 SA_FLAG_EOM_PENDING = 0x0040,
137 SA_FLAG_EIO_PENDING = 0x0080,
138 SA_FLAG_EOF_PENDING = 0x0100,
139 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
140 SA_FLAG_EOF_PENDING),
141 SA_FLAG_INVALID = 0x0200,
142 SA_FLAG_COMP_ENABLED = 0x0400,
143 SA_FLAG_COMP_SUPP = 0x0800,
144 SA_FLAG_COMP_UNSUPP = 0x1000,
145 SA_FLAG_TAPE_FROZEN = 0x2000
146 } sa_flags;
147
148 typedef enum {
149 SA_MODE_REWIND = 0x00,
150 SA_MODE_NOREWIND = 0x01,
151 SA_MODE_OFFLINE = 0x02
152 } sa_mode;
153
154 typedef enum {
155 SA_PARAM_NONE = 0x00,
156 SA_PARAM_BLOCKSIZE = 0x01,
157 SA_PARAM_DENSITY = 0x02,
158 SA_PARAM_COMPRESSION = 0x04,
159 SA_PARAM_BUFF_MODE = 0x08,
160 SA_PARAM_NUMBLOCKS = 0x10,
161 SA_PARAM_WP = 0x20,
162 SA_PARAM_SPEED = 0x40,
163 SA_PARAM_ALL = 0x7f
164 } sa_params;
165
166 typedef enum {
167 SA_QUIRK_NONE = 0x00,
168 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */
169 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */
170 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */
171 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */
172 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */
173 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */
174 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */
175 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */
176 } sa_quirks;
177
178 #define SA_QUIRK_BIT_STRING \
179 "\020" \
180 "\001NOCOMP" \
181 "\002FIXED" \
182 "\003VARIABLE" \
183 "\0042FM" \
184 "\0051FM" \
185 "\006NODREAD" \
186 "\007NO_MODESEL" \
187 "\010NO_CPAGE"
188
189 #define SAMODE(z) (dev2unit(z) & 0x3)
190 #define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3)
191 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4))
192
193 #define SA_NOT_CTLDEV 0
194 #define SA_CTLDEV 1
195
196 #define SA_ATYPE_R 0
197 #define SA_ATYPE_NR 1
198 #define SA_ATYPE_ER 2
199
200 #define SAMINOR(ctl, mode, access) \
201 ((ctl << 4) | (mode << 2) | (access & 0x3))
202
203 #define SA_NUM_MODES 4
204 struct sa_devs {
205 struct cdev *ctl_dev;
206 struct sa_mode_devs {
207 struct cdev *r_dev;
208 struct cdev *nr_dev;
209 struct cdev *er_dev;
210 } mode_devs[SA_NUM_MODES];
211 };
212
213 struct sa_softc {
214 sa_state state;
215 sa_flags flags;
216 sa_quirks quirks;
217 u_int si_flags;
218 struct bio_queue_head bio_queue;
219 int queue_count;
220 struct devstat *device_stats;
221 struct sa_devs devs;
222 int blk_gran;
223 int blk_mask;
224 int blk_shift;
225 u_int32_t max_blk;
226 u_int32_t min_blk;
227 u_int32_t maxio;
228 u_int32_t cpi_maxio;
229 int allow_io_split;
230 u_int32_t comp_algorithm;
231 u_int32_t saved_comp_algorithm;
232 u_int32_t media_blksize;
233 u_int32_t last_media_blksize;
234 u_int32_t media_numblks;
235 u_int8_t media_density;
236 u_int8_t speed;
237 u_int8_t scsi_rev;
238 u_int8_t dsreg; /* mtio mt_dsreg, redux */
239 int buffer_mode;
240 int filemarks;
241 union ccb saved_ccb;
242 int last_resid_was_io;
243
244 /*
245 * Relative to BOT Location.
246 */
247 daddr_t fileno;
248 daddr_t blkno;
249
250 /*
251 * Latched Error Info
252 */
253 struct {
254 struct scsi_sense_data _last_io_sense;
255 u_int64_t _last_io_resid;
256 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
257 struct scsi_sense_data _last_ctl_sense;
258 u_int64_t _last_ctl_resid;
259 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
260 #define last_io_sense errinfo._last_io_sense
261 #define last_io_resid errinfo._last_io_resid
262 #define last_io_cdb errinfo._last_io_cdb
263 #define last_ctl_sense errinfo._last_ctl_sense
264 #define last_ctl_resid errinfo._last_ctl_resid
265 #define last_ctl_cdb errinfo._last_ctl_cdb
266 } errinfo;
267 /*
268 * Misc other flags/state
269 */
270 u_int32_t
271 : 29,
272 open_rdonly : 1, /* open read-only */
273 open_pending_mount : 1, /* open pending mount */
274 ctrl_mode : 1; /* control device open */
275
276 struct task sysctl_task;
277 struct sysctl_ctx_list sysctl_ctx;
278 struct sysctl_oid *sysctl_tree;
279 };
280
281 struct sa_quirk_entry {
282 struct scsi_inquiry_pattern inq_pat; /* matching pattern */
283 sa_quirks quirks; /* specific quirk type */
284 u_int32_t prefblk; /* preferred blocksize when in fixed mode */
285 };
286
287 static struct sa_quirk_entry sa_quirk_table[] =
288 {
289 {
290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream",
291 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD |
292 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768
293 },
294 {
295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
296 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0
297 },
298 {
299 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
300 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0
301 },
302 {
303 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
304 "Python*", "*"}, SA_QUIRK_NODREAD, 0
305 },
306 {
307 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
308 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
309 },
310 {
311 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
312 "VIPER 2525 25462", "-011"},
313 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0
314 },
315 {
316 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
317 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
318 },
319 #if 0
320 {
321 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
322 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0,
323 },
324 #endif
325 {
326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
327 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
328 },
329 {
330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
331 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
332 },
333 {
334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
335 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
336 },
337 {
338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
339 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
340 },
341 {
342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
343 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
344 },
345 {
346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
347 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
348 },
349 { /* jreynold@primenet.com */
350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
351 "STT8000N*", "*"}, SA_QUIRK_1FM, 0
352 },
353 { /* mike@sentex.net */
354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
355 "STT20000*", "*"}, SA_QUIRK_1FM, 0
356 },
357 {
358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE",
359 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
360 },
361 {
362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
363 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
364 },
365 {
366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
367 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
368 },
369 {
370 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
371 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
372 },
373 {
374 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
375 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
376 },
377 {
378 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
379 " SLR*", "*"}, SA_QUIRK_1FM, 0
380 },
381 {
382 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
383 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
384 },
385 {
386 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
387 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
388 }
389 };
390
391 static d_open_t saopen;
392 static d_close_t saclose;
393 static d_strategy_t sastrategy;
394 static d_ioctl_t saioctl;
395 static periph_init_t sainit;
396 static periph_ctor_t saregister;
397 static periph_oninv_t saoninvalidate;
398 static periph_dtor_t sacleanup;
399 static periph_start_t sastart;
400 static void saasync(void *callback_arg, u_int32_t code,
401 struct cam_path *path, void *arg);
402 static void sadone(struct cam_periph *periph,
403 union ccb *start_ccb);
404 static int saerror(union ccb *ccb, u_int32_t cam_flags,
405 u_int32_t sense_flags);
406 static int samarkswanted(struct cam_periph *);
407 static int sacheckeod(struct cam_periph *periph);
408 static int sagetparams(struct cam_periph *periph,
409 sa_params params_to_get,
410 u_int32_t *blocksize, u_int8_t *density,
411 u_int32_t *numblocks, int *buff_mode,
412 u_int8_t *write_protect, u_int8_t *speed,
413 int *comp_supported, int *comp_enabled,
414 u_int32_t *comp_algorithm,
415 sa_comp_t *comp_page);
416 static int sasetparams(struct cam_periph *periph,
417 sa_params params_to_set,
418 u_int32_t blocksize, u_int8_t density,
419 u_int32_t comp_algorithm,
420 u_int32_t sense_flags);
421 static void saprevent(struct cam_periph *periph, int action);
422 static int sarewind(struct cam_periph *periph);
423 static int saspace(struct cam_periph *periph, int count,
424 scsi_space_code code);
425 static int samount(struct cam_periph *, int, struct cdev *);
426 static int saretension(struct cam_periph *periph);
427 static int sareservereleaseunit(struct cam_periph *periph,
428 int reserve);
429 static int saloadunload(struct cam_periph *periph, int load);
430 static int saerase(struct cam_periph *periph, int longerase);
431 static int sawritefilemarks(struct cam_periph *periph,
432 int nmarks, int setmarks);
433 static int sardpos(struct cam_periph *periph, int, u_int32_t *);
434 static int sasetpos(struct cam_periph *periph, int, u_int32_t *);
435
436
437 #ifndef SA_DEFAULT_IO_SPLIT
438 #define SA_DEFAULT_IO_SPLIT 0
439 #endif
440
441 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT;
442
443 /*
444 * Tunable to allow the user to set a global allow_io_split value. Note
445 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up
446 * is bad behavior, because it hides the true tape block size from the
447 * application.
448 */
449 TUNABLE_INT("kern.cam.sa.allow_io_split", &sa_allow_io_split);
450 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0,
451 "CAM Sequential Access Tape Driver");
452
453 static struct periph_driver sadriver =
454 {
455 sainit, "sa",
456 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
457 };
458
459 PERIPHDRIVER_DECLARE(sa, sadriver);
460
461 /* For 2.2-stable support */
462 #ifndef D_TAPE
463 #define D_TAPE 0
464 #endif
465
466
467 static struct cdevsw sa_cdevsw = {
468 .d_version = D_VERSION,
469 .d_open = saopen,
470 .d_close = saclose,
471 .d_read = physread,
472 .d_write = physwrite,
473 .d_ioctl = saioctl,
474 .d_strategy = sastrategy,
475 .d_name = "sa",
476 .d_flags = D_TAPE,
477 };
478
479 static int
480 saopen(struct cdev *dev, int flags, int fmt, struct thread *td)
481 {
482 struct cam_periph *periph;
483 struct sa_softc *softc;
484 int error;
485
486 periph = (struct cam_periph *)dev->si_drv1;
487 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
488 return (ENXIO);
489 }
490
491 cam_periph_lock(periph);
492
493 softc = (struct sa_softc *)periph->softc;
494
495 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
496 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags));
497
498 if (SA_IS_CTRL(dev)) {
499 softc->ctrl_mode = 1;
500 cam_periph_unlock(periph);
501 return (0);
502 }
503
504 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
505 cam_periph_unlock(periph);
506 cam_periph_release(periph);
507 return (error);
508 }
509
510 if (softc->flags & SA_FLAG_OPEN) {
511 error = EBUSY;
512 } else if (softc->flags & SA_FLAG_INVALID) {
513 error = ENXIO;
514 } else {
515 /*
516 * Preserve whether this is a read_only open.
517 */
518 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY;
519
520 /*
521 * The function samount ensures media is loaded and ready.
522 * It also does a device RESERVE if the tape isn't yet mounted.
523 *
524 * If the mount fails and this was a non-blocking open,
525 * make this a 'open_pending_mount' action.
526 */
527 error = samount(periph, flags, dev);
528 if (error && (flags & O_NONBLOCK)) {
529 softc->flags |= SA_FLAG_OPEN;
530 softc->open_pending_mount = 1;
531 cam_periph_unhold(periph);
532 cam_periph_unlock(periph);
533 return (0);
534 }
535 }
536
537 if (error) {
538 cam_periph_unhold(periph);
539 cam_periph_unlock(periph);
540 cam_periph_release(periph);
541 return (error);
542 }
543
544 saprevent(periph, PR_PREVENT);
545 softc->flags |= SA_FLAG_OPEN;
546
547 cam_periph_unhold(periph);
548 cam_periph_unlock(periph);
549 return (error);
550 }
551
552 static int
553 saclose(struct cdev *dev, int flag, int fmt, struct thread *td)
554 {
555 struct cam_periph *periph;
556 struct sa_softc *softc;
557 int mode, error, writing, tmp;
558 int closedbits = SA_FLAG_OPEN;
559
560 mode = SAMODE(dev);
561 periph = (struct cam_periph *)dev->si_drv1;
562 if (periph == NULL)
563 return (ENXIO);
564
565 cam_periph_lock(periph);
566
567 softc = (struct sa_softc *)periph->softc;
568
569 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
570 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags));
571
572
573 softc->open_rdonly = 0;
574 if (SA_IS_CTRL(dev)) {
575 softc->ctrl_mode = 0;
576 cam_periph_unlock(periph);
577 cam_periph_release(periph);
578 return (0);
579 }
580
581 if (softc->open_pending_mount) {
582 softc->flags &= ~SA_FLAG_OPEN;
583 softc->open_pending_mount = 0;
584 cam_periph_unlock(periph);
585 cam_periph_release(periph);
586 return (0);
587 }
588
589 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) {
590 cam_periph_unlock(periph);
591 return (error);
592 }
593
594 /*
595 * Were we writing the tape?
596 */
597 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0;
598
599 /*
600 * See whether or not we need to write filemarks. If this
601 * fails, we probably have to assume we've lost tape
602 * position.
603 */
604 error = sacheckeod(periph);
605 if (error) {
606 xpt_print(periph->path,
607 "failed to write terminating filemark(s)\n");
608 softc->flags |= SA_FLAG_TAPE_FROZEN;
609 }
610
611 /*
612 * Whatever we end up doing, allow users to eject tapes from here on.
613 */
614 saprevent(periph, PR_ALLOW);
615
616 /*
617 * Decide how to end...
618 */
619 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
620 closedbits |= SA_FLAG_TAPE_FROZEN;
621 } else switch (mode) {
622 case SA_MODE_OFFLINE:
623 /*
624 * An 'offline' close is an unconditional release of
625 * frozen && mount conditions, irrespective of whether
626 * these operations succeeded. The reason for this is
627 * to allow at least some kind of programmatic way
628 * around our state getting all fouled up. If somebody
629 * issues an 'offline' command, that will be allowed
630 * to clear state.
631 */
632 (void) sarewind(periph);
633 (void) saloadunload(periph, FALSE);
634 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN;
635 break;
636 case SA_MODE_REWIND:
637 /*
638 * If the rewind fails, return an error- if anyone cares,
639 * but not overwriting any previous error.
640 *
641 * We don't clear the notion of mounted here, but we do
642 * clear the notion of frozen if we successfully rewound.
643 */
644 tmp = sarewind(periph);
645 if (tmp) {
646 if (error != 0)
647 error = tmp;
648 } else {
649 closedbits |= SA_FLAG_TAPE_FROZEN;
650 }
651 break;
652 case SA_MODE_NOREWIND:
653 /*
654 * If we're not rewinding/unloading the tape, find out
655 * whether we need to back up over one of two filemarks
656 * we wrote (if we wrote two filemarks) so that appends
657 * from this point on will be sane.
658 */
659 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) {
660 tmp = saspace(periph, -1, SS_FILEMARKS);
661 if (tmp) {
662 xpt_print(periph->path, "unable to backspace "
663 "over one of double filemarks at end of "
664 "tape\n");
665 xpt_print(periph->path, "it is possible that "
666 "this device needs a SA_QUIRK_1FM quirk set"
667 "for it\n");
668 softc->flags |= SA_FLAG_TAPE_FROZEN;
669 }
670 }
671 break;
672 default:
673 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode);
674 /* NOTREACHED */
675 break;
676 }
677
678 /*
679 * We wish to note here that there are no more filemarks to be written.
680 */
681 softc->filemarks = 0;
682 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
683
684 /*
685 * And we are no longer open for business.
686 */
687 softc->flags &= ~closedbits;
688
689 /*
690 * Inform users if tape state if frozen....
691 */
692 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
693 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, "
694 "REWIND or MTEOM command to clear this state.\n");
695 }
696
697 /* release the device if it is no longer mounted */
698 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0)
699 sareservereleaseunit(periph, FALSE);
700
701 cam_periph_unhold(periph);
702 cam_periph_unlock(periph);
703 cam_periph_release(periph);
704
705 return (error);
706 }
707
708 /*
709 * Actually translate the requested transfer into one the physical driver
710 * can understand. The transfer is described by a buf and will include
711 * only one physical transfer.
712 */
713 static void
714 sastrategy(struct bio *bp)
715 {
716 struct cam_periph *periph;
717 struct sa_softc *softc;
718
719 bp->bio_resid = bp->bio_bcount;
720 if (SA_IS_CTRL(bp->bio_dev)) {
721 biofinish(bp, NULL, EINVAL);
722 return;
723 }
724 periph = (struct cam_periph *)bp->bio_dev->si_drv1;
725 if (periph == NULL) {
726 biofinish(bp, NULL, ENXIO);
727 return;
728 }
729 cam_periph_lock(periph);
730
731 softc = (struct sa_softc *)periph->softc;
732
733 if (softc->flags & SA_FLAG_INVALID) {
734 cam_periph_unlock(periph);
735 biofinish(bp, NULL, ENXIO);
736 return;
737 }
738
739 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
740 cam_periph_unlock(periph);
741 biofinish(bp, NULL, EPERM);
742 return;
743 }
744
745 /*
746 * This should actually never occur as the write(2)
747 * system call traps attempts to write to a read-only
748 * file descriptor.
749 */
750 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) {
751 cam_periph_unlock(periph);
752 biofinish(bp, NULL, EBADF);
753 return;
754 }
755
756 if (softc->open_pending_mount) {
757 int error = samount(periph, 0, bp->bio_dev);
758 if (error) {
759 cam_periph_unlock(periph);
760 biofinish(bp, NULL, ENXIO);
761 return;
762 }
763 saprevent(periph, PR_PREVENT);
764 softc->open_pending_mount = 0;
765 }
766
767
768 /*
769 * If it's a null transfer, return immediately
770 */
771 if (bp->bio_bcount == 0) {
772 cam_periph_unlock(periph);
773 biodone(bp);
774 return;
775 }
776
777 /* valid request? */
778 if (softc->flags & SA_FLAG_FIXED) {
779 /*
780 * Fixed block device. The byte count must
781 * be a multiple of our block size.
782 */
783 if (((softc->blk_mask != ~0) &&
784 ((bp->bio_bcount & softc->blk_mask) != 0)) ||
785 ((softc->blk_mask == ~0) &&
786 ((bp->bio_bcount % softc->min_blk) != 0))) {
787 xpt_print(periph->path, "Invalid request. Fixed block "
788 "device requests must be a multiple of %d bytes\n",
789 softc->min_blk);
790 cam_periph_unlock(periph);
791 biofinish(bp, NULL, EINVAL);
792 return;
793 }
794 } else if ((bp->bio_bcount > softc->max_blk) ||
795 (bp->bio_bcount < softc->min_blk) ||
796 (bp->bio_bcount & softc->blk_mask) != 0) {
797
798 xpt_print_path(periph->path);
799 printf("Invalid request. Variable block "
800 "device requests must be ");
801 if (softc->blk_mask != 0) {
802 printf("a multiple of %d ", (0x1 << softc->blk_gran));
803 }
804 printf("between %d and %d bytes\n", softc->min_blk,
805 softc->max_blk);
806 cam_periph_unlock(periph);
807 biofinish(bp, NULL, EINVAL);
808 return;
809 }
810
811 /*
812 * Place it at the end of the queue.
813 */
814 bioq_insert_tail(&softc->bio_queue, bp);
815 softc->queue_count++;
816 #if 0
817 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
818 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount,
819 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
820 (bp->bio_cmd == BIO_READ)? "read" : "write"));
821 #endif
822 if (softc->queue_count > 1) {
823 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
824 ("sastrategy: queue count now %d\n", softc->queue_count));
825 }
826
827 /*
828 * Schedule ourselves for performing the work.
829 */
830 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
831 cam_periph_unlock(periph);
832
833 return;
834 }
835
836
837 #define PENDING_MOUNT_CHECK(softc, periph, dev) \
838 if (softc->open_pending_mount) { \
839 error = samount(periph, 0, dev); \
840 if (error) { \
841 break; \
842 } \
843 saprevent(periph, PR_PREVENT); \
844 softc->open_pending_mount = 0; \
845 }
846
847 static int
848 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
849 {
850 struct cam_periph *periph;
851 struct sa_softc *softc;
852 scsi_space_code spaceop;
853 int didlockperiph = 0;
854 int mode;
855 int error = 0;
856
857 mode = SAMODE(dev);
858 error = 0; /* shut up gcc */
859 spaceop = 0; /* shut up gcc */
860
861 periph = (struct cam_periph *)dev->si_drv1;
862 if (periph == NULL)
863 return (ENXIO);
864
865 cam_periph_lock(periph);
866 softc = (struct sa_softc *)periph->softc;
867
868 /*
869 * Check for control mode accesses. We allow MTIOCGET and
870 * MTIOCERRSTAT (but need to be the only one open in order
871 * to clear latched status), and MTSETBSIZE, MTSETDNSTY
872 * and MTCOMP (but need to be the only one accessing this
873 * device to run those).
874 */
875
876 if (SA_IS_CTRL(dev)) {
877 switch (cmd) {
878 case MTIOCGETEOTMODEL:
879 case MTIOCGET:
880 break;
881 case MTIOCERRSTAT:
882 /*
883 * If the periph isn't already locked, lock it
884 * so our MTIOCERRSTAT can reset latched error stats.
885 *
886 * If the periph is already locked, skip it because
887 * we're just getting status and it'll be up to the
888 * other thread that has this device open to do
889 * an MTIOCERRSTAT that would clear latched status.
890 */
891 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
892 error = cam_periph_hold(periph, PRIBIO|PCATCH);
893 if (error != 0) {
894 cam_periph_unlock(periph);
895 return (error);
896 }
897 didlockperiph = 1;
898 }
899 break;
900
901 case MTIOCTOP:
902 {
903 struct mtop *mt = (struct mtop *) arg;
904
905 /*
906 * Check to make sure it's an OP we can perform
907 * with no media inserted.
908 */
909 switch (mt->mt_op) {
910 case MTSETBSIZ:
911 case MTSETDNSTY:
912 case MTCOMP:
913 mt = NULL;
914 /* FALLTHROUGH */
915 default:
916 break;
917 }
918 if (mt != NULL) {
919 break;
920 }
921 /* FALLTHROUGH */
922 }
923 case MTIOCSETEOTMODEL:
924 /*
925 * We need to acquire the peripheral here rather
926 * than at open time because we are sharing writable
927 * access to data structures.
928 */
929 error = cam_periph_hold(periph, PRIBIO|PCATCH);
930 if (error != 0) {
931 cam_periph_unlock(periph);
932 return (error);
933 }
934 didlockperiph = 1;
935 break;
936
937 default:
938 cam_periph_unlock(periph);
939 return (EINVAL);
940 }
941 }
942
943 /*
944 * Find the device that the user is talking about
945 */
946 switch (cmd) {
947 case MTIOCGET:
948 {
949 struct mtget *g = (struct mtget *)arg;
950
951 /*
952 * If this isn't the control mode device, actually go out
953 * and ask the drive again what it's set to.
954 */
955 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) {
956 u_int8_t write_protect;
957 int comp_enabled, comp_supported;
958 error = sagetparams(periph, SA_PARAM_ALL,
959 &softc->media_blksize, &softc->media_density,
960 &softc->media_numblks, &softc->buffer_mode,
961 &write_protect, &softc->speed, &comp_supported,
962 &comp_enabled, &softc->comp_algorithm, NULL);
963 if (error)
964 break;
965 if (write_protect)
966 softc->flags |= SA_FLAG_TAPE_WP;
967 else
968 softc->flags &= ~SA_FLAG_TAPE_WP;
969 softc->flags &= ~(SA_FLAG_COMP_SUPP|
970 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP);
971 if (comp_supported) {
972 if (softc->saved_comp_algorithm == 0)
973 softc->saved_comp_algorithm =
974 softc->comp_algorithm;
975 softc->flags |= SA_FLAG_COMP_SUPP;
976 if (comp_enabled)
977 softc->flags |= SA_FLAG_COMP_ENABLED;
978 } else
979 softc->flags |= SA_FLAG_COMP_UNSUPP;
980 }
981 bzero(g, sizeof(struct mtget));
982 g->mt_type = MT_ISAR;
983 if (softc->flags & SA_FLAG_COMP_UNSUPP) {
984 g->mt_comp = MT_COMP_UNSUPP;
985 g->mt_comp0 = MT_COMP_UNSUPP;
986 g->mt_comp1 = MT_COMP_UNSUPP;
987 g->mt_comp2 = MT_COMP_UNSUPP;
988 g->mt_comp3 = MT_COMP_UNSUPP;
989 } else {
990 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
991 g->mt_comp = MT_COMP_DISABLED;
992 } else {
993 g->mt_comp = softc->comp_algorithm;
994 }
995 g->mt_comp0 = softc->comp_algorithm;
996 g->mt_comp1 = softc->comp_algorithm;
997 g->mt_comp2 = softc->comp_algorithm;
998 g->mt_comp3 = softc->comp_algorithm;
999 }
1000 g->mt_density = softc->media_density;
1001 g->mt_density0 = softc->media_density;
1002 g->mt_density1 = softc->media_density;
1003 g->mt_density2 = softc->media_density;
1004 g->mt_density3 = softc->media_density;
1005 g->mt_blksiz = softc->media_blksize;
1006 g->mt_blksiz0 = softc->media_blksize;
1007 g->mt_blksiz1 = softc->media_blksize;
1008 g->mt_blksiz2 = softc->media_blksize;
1009 g->mt_blksiz3 = softc->media_blksize;
1010 g->mt_fileno = softc->fileno;
1011 g->mt_blkno = softc->blkno;
1012 g->mt_dsreg = (short) softc->dsreg;
1013 /*
1014 * Yes, we know that this is likely to overflow
1015 */
1016 if (softc->last_resid_was_io) {
1017 if ((g->mt_resid = (short) softc->last_io_resid) != 0) {
1018 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
1019 softc->last_io_resid = 0;
1020 }
1021 }
1022 } else {
1023 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) {
1024 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
1025 softc->last_ctl_resid = 0;
1026 }
1027 }
1028 }
1029 error = 0;
1030 break;
1031 }
1032 case MTIOCERRSTAT:
1033 {
1034 struct scsi_tape_errors *sep =
1035 &((union mterrstat *)arg)->scsi_errstat;
1036
1037 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1038 ("saioctl: MTIOCERRSTAT\n"));
1039
1040 bzero(sep, sizeof(*sep));
1041 sep->io_resid = softc->last_io_resid;
1042 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
1043 sizeof (sep->io_sense));
1044 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
1045 sizeof (sep->io_cdb));
1046 sep->ctl_resid = softc->last_ctl_resid;
1047 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
1048 sizeof (sep->ctl_sense));
1049 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
1050 sizeof (sep->ctl_cdb));
1051
1052 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) ||
1053 didlockperiph)
1054 bzero((caddr_t) &softc->errinfo,
1055 sizeof (softc->errinfo));
1056 error = 0;
1057 break;
1058 }
1059 case MTIOCTOP:
1060 {
1061 struct mtop *mt;
1062 int count;
1063
1064 PENDING_MOUNT_CHECK(softc, periph, dev);
1065
1066 mt = (struct mtop *)arg;
1067
1068
1069 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1070 ("saioctl: op=0x%x count=0x%x\n",
1071 mt->mt_op, mt->mt_count));
1072
1073 count = mt->mt_count;
1074 switch (mt->mt_op) {
1075 case MTWEOF: /* write an end-of-file marker */
1076 /*
1077 * We don't need to clear the SA_FLAG_TAPE_WRITTEN
1078 * flag because by keeping track of filemarks
1079 * we have last written we know ehether or not
1080 * we need to write more when we close the device.
1081 */
1082 error = sawritefilemarks(periph, count, FALSE);
1083 break;
1084 case MTWSS: /* write a setmark */
1085 error = sawritefilemarks(periph, count, TRUE);
1086 break;
1087 case MTBSR: /* backward space record */
1088 case MTFSR: /* forward space record */
1089 case MTBSF: /* backward space file */
1090 case MTFSF: /* forward space file */
1091 case MTBSS: /* backward space setmark */
1092 case MTFSS: /* forward space setmark */
1093 case MTEOD: /* space to end of recorded medium */
1094 {
1095 int nmarks;
1096
1097 spaceop = SS_FILEMARKS;
1098 nmarks = softc->filemarks;
1099 error = sacheckeod(periph);
1100 if (error) {
1101 xpt_print(periph->path,
1102 "EOD check prior to spacing failed\n");
1103 softc->flags |= SA_FLAG_EIO_PENDING;
1104 break;
1105 }
1106 nmarks -= softc->filemarks;
1107 switch(mt->mt_op) {
1108 case MTBSR:
1109 count = -count;
1110 /* FALLTHROUGH */
1111 case MTFSR:
1112 spaceop = SS_BLOCKS;
1113 break;
1114 case MTBSF:
1115 count = -count;
1116 /* FALLTHROUGH */
1117 case MTFSF:
1118 break;
1119 case MTBSS:
1120 count = -count;
1121 /* FALLTHROUGH */
1122 case MTFSS:
1123 spaceop = SS_SETMARKS;
1124 break;
1125 case MTEOD:
1126 spaceop = SS_EOD;
1127 count = 0;
1128 nmarks = 0;
1129 break;
1130 default:
1131 error = EINVAL;
1132 break;
1133 }
1134 if (error)
1135 break;
1136
1137 nmarks = softc->filemarks;
1138 /*
1139 * XXX: Why are we checking again?
1140 */
1141 error = sacheckeod(periph);
1142 if (error)
1143 break;
1144 nmarks -= softc->filemarks;
1145 error = saspace(periph, count - nmarks, spaceop);
1146 /*
1147 * At this point, clear that we've written the tape
1148 * and that we've written any filemarks. We really
1149 * don't know what the applications wishes to do next-
1150 * the sacheckeod's will make sure we terminated the
1151 * tape correctly if we'd been writing, but the next
1152 * action the user application takes will set again
1153 * whether we need to write filemarks.
1154 */
1155 softc->flags &=
1156 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1157 softc->filemarks = 0;
1158 break;
1159 }
1160 case MTREW: /* rewind */
1161 PENDING_MOUNT_CHECK(softc, periph, dev);
1162 (void) sacheckeod(periph);
1163 error = sarewind(periph);
1164 /* see above */
1165 softc->flags &=
1166 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1167 softc->flags &= ~SA_FLAG_ERR_PENDING;
1168 softc->filemarks = 0;
1169 break;
1170 case MTERASE: /* erase */
1171 PENDING_MOUNT_CHECK(softc, periph, dev);
1172 error = saerase(periph, count);
1173 softc->flags &=
1174 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1175 softc->flags &= ~SA_FLAG_ERR_PENDING;
1176 break;
1177 case MTRETENS: /* re-tension tape */
1178 PENDING_MOUNT_CHECK(softc, periph, dev);
1179 error = saretension(periph);
1180 softc->flags &=
1181 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1182 softc->flags &= ~SA_FLAG_ERR_PENDING;
1183 break;
1184 case MTOFFL: /* rewind and put the drive offline */
1185
1186 PENDING_MOUNT_CHECK(softc, periph, dev);
1187
1188 (void) sacheckeod(periph);
1189 /* see above */
1190 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
1191 softc->filemarks = 0;
1192
1193 error = sarewind(periph);
1194 /* clear the frozen flag anyway */
1195 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1196
1197 /*
1198 * Be sure to allow media removal before ejecting.
1199 */
1200
1201 saprevent(periph, PR_ALLOW);
1202 if (error == 0) {
1203 error = saloadunload(periph, FALSE);
1204 if (error == 0) {
1205 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1206 }
1207 }
1208 break;
1209
1210 case MTNOP: /* no operation, sets status only */
1211 case MTCACHE: /* enable controller cache */
1212 case MTNOCACHE: /* disable controller cache */
1213 error = 0;
1214 break;
1215
1216 case MTSETBSIZ: /* Set block size for device */
1217
1218 PENDING_MOUNT_CHECK(softc, periph, dev);
1219
1220 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count,
1221 0, 0, 0);
1222 if (error == 0) {
1223 softc->last_media_blksize =
1224 softc->media_blksize;
1225 softc->media_blksize = count;
1226 if (count) {
1227 softc->flags |= SA_FLAG_FIXED;
1228 if (powerof2(count)) {
1229 softc->blk_shift =
1230 ffs(count) - 1;
1231 softc->blk_mask = count - 1;
1232 } else {
1233 softc->blk_mask = ~0;
1234 softc->blk_shift = 0;
1235 }
1236 /*
1237 * Make the user's desire 'persistent'.
1238 */
1239 softc->quirks &= ~SA_QUIRK_VARIABLE;
1240 softc->quirks |= SA_QUIRK_FIXED;
1241 } else {
1242 softc->flags &= ~SA_FLAG_FIXED;
1243 if (softc->max_blk == 0) {
1244 softc->max_blk = ~0;
1245 }
1246 softc->blk_shift = 0;
1247 if (softc->blk_gran != 0) {
1248 softc->blk_mask =
1249 softc->blk_gran - 1;
1250 } else {
1251 softc->blk_mask = 0;
1252 }
1253 /*
1254 * Make the user's desire 'persistent'.
1255 */
1256 softc->quirks |= SA_QUIRK_VARIABLE;
1257 softc->quirks &= ~SA_QUIRK_FIXED;
1258 }
1259 }
1260 break;
1261 case MTSETDNSTY: /* Set density for device and mode */
1262 PENDING_MOUNT_CHECK(softc, periph, dev);
1263
1264 if (count > UCHAR_MAX) {
1265 error = EINVAL;
1266 break;
1267 } else {
1268 error = sasetparams(periph, SA_PARAM_DENSITY,
1269 0, count, 0, 0);
1270 }
1271 break;
1272 case MTCOMP: /* enable compression */
1273 PENDING_MOUNT_CHECK(softc, periph, dev);
1274 /*
1275 * Some devices don't support compression, and
1276 * don't like it if you ask them for the
1277 * compression page.
1278 */
1279 if ((softc->quirks & SA_QUIRK_NOCOMP) ||
1280 (softc->flags & SA_FLAG_COMP_UNSUPP)) {
1281 error = ENODEV;
1282 break;
1283 }
1284 error = sasetparams(periph, SA_PARAM_COMPRESSION,
1285 0, 0, count, SF_NO_PRINT);
1286 break;
1287 default:
1288 error = EINVAL;
1289 }
1290 break;
1291 }
1292 case MTIOCIEOT:
1293 case MTIOCEEOT:
1294 error = 0;
1295 break;
1296 case MTIOCRDSPOS:
1297 PENDING_MOUNT_CHECK(softc, periph, dev);
1298 error = sardpos(periph, 0, (u_int32_t *) arg);
1299 break;
1300 case MTIOCRDHPOS:
1301 PENDING_MOUNT_CHECK(softc, periph, dev);
1302 error = sardpos(periph, 1, (u_int32_t *) arg);
1303 break;
1304 case MTIOCSLOCATE:
1305 PENDING_MOUNT_CHECK(softc, periph, dev);
1306 error = sasetpos(periph, 0, (u_int32_t *) arg);
1307 break;
1308 case MTIOCHLOCATE:
1309 PENDING_MOUNT_CHECK(softc, periph, dev);
1310 error = sasetpos(periph, 1, (u_int32_t *) arg);
1311 break;
1312 case MTIOCGETEOTMODEL:
1313 error = 0;
1314 if (softc->quirks & SA_QUIRK_1FM)
1315 mode = 1;
1316 else
1317 mode = 2;
1318 *((u_int32_t *) arg) = mode;
1319 break;
1320 case MTIOCSETEOTMODEL:
1321 error = 0;
1322 switch (*((u_int32_t *) arg)) {
1323 case 1:
1324 softc->quirks &= ~SA_QUIRK_2FM;
1325 softc->quirks |= SA_QUIRK_1FM;
1326 break;
1327 case 2:
1328 softc->quirks &= ~SA_QUIRK_1FM;
1329 softc->quirks |= SA_QUIRK_2FM;
1330 break;
1331 default:
1332 error = EINVAL;
1333 break;
1334 }
1335 break;
1336 default:
1337 error = cam_periph_ioctl(periph, cmd, arg, saerror);
1338 break;
1339 }
1340
1341 /*
1342 * Check to see if we cleared a frozen state
1343 */
1344 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) {
1345 switch(cmd) {
1346 case MTIOCRDSPOS:
1347 case MTIOCRDHPOS:
1348 case MTIOCSLOCATE:
1349 case MTIOCHLOCATE:
1350 softc->fileno = (daddr_t) -1;
1351 softc->blkno = (daddr_t) -1;
1352 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1353 xpt_print(periph->path,
1354 "tape state now unfrozen.\n");
1355 break;
1356 default:
1357 break;
1358 }
1359 }
1360 if (didlockperiph) {
1361 cam_periph_unhold(periph);
1362 }
1363 cam_periph_unlock(periph);
1364 return (error);
1365 }
1366
1367 static void
1368 sainit(void)
1369 {
1370 cam_status status;
1371
1372 /*
1373 * Install a global async callback.
1374 */
1375 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL);
1376
1377 if (status != CAM_REQ_CMP) {
1378 printf("sa: Failed to attach master async callback "
1379 "due to status 0x%x!\n", status);
1380 }
1381 }
1382
1383 static void
1384 saoninvalidate(struct cam_periph *periph)
1385 {
1386 struct sa_softc *softc;
1387
1388 softc = (struct sa_softc *)periph->softc;
1389
1390 /*
1391 * De-register any async callbacks.
1392 */
1393 xpt_register_async(0, saasync, periph, periph->path);
1394
1395 softc->flags |= SA_FLAG_INVALID;
1396
1397 /*
1398 * Return all queued I/O with ENXIO.
1399 * XXX Handle any transactions queued to the card
1400 * with XPT_ABORT_CCB.
1401 */
1402 bioq_flush(&softc->bio_queue, NULL, ENXIO);
1403 softc->queue_count = 0;
1404 }
1405
1406 static void
1407 sacleanup(struct cam_periph *periph)
1408 {
1409 struct sa_softc *softc;
1410 int i;
1411
1412 softc = (struct sa_softc *)periph->softc;
1413
1414 devstat_remove_entry(softc->device_stats);
1415 cam_periph_unlock(periph);
1416 destroy_dev(softc->devs.ctl_dev);
1417 for (i = 0; i < SA_NUM_MODES; i++) {
1418 destroy_dev(softc->devs.mode_devs[i].r_dev);
1419 destroy_dev(softc->devs.mode_devs[i].nr_dev);
1420 destroy_dev(softc->devs.mode_devs[i].er_dev);
1421 }
1422 cam_periph_lock(periph);
1423 free(softc, M_SCSISA);
1424 }
1425
1426 static void
1427 saasync(void *callback_arg, u_int32_t code,
1428 struct cam_path *path, void *arg)
1429 {
1430 struct cam_periph *periph;
1431
1432 periph = (struct cam_periph *)callback_arg;
1433 switch (code) {
1434 case AC_FOUND_DEVICE:
1435 {
1436 struct ccb_getdev *cgd;
1437 cam_status status;
1438
1439 cgd = (struct ccb_getdev *)arg;
1440 if (cgd == NULL)
1441 break;
1442
1443 if (cgd->protocol != PROTO_SCSI)
1444 break;
1445
1446 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
1447 break;
1448
1449 /*
1450 * Allocate a peripheral instance for
1451 * this device and start the probe
1452 * process.
1453 */
1454 status = cam_periph_alloc(saregister, saoninvalidate,
1455 sacleanup, sastart,
1456 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
1457 saasync, AC_FOUND_DEVICE, cgd);
1458
1459 if (status != CAM_REQ_CMP
1460 && status != CAM_REQ_INPROG)
1461 printf("saasync: Unable to probe new device "
1462 "due to status 0x%x\n", status);
1463 break;
1464 }
1465 default:
1466 cam_periph_async(periph, code, path, arg);
1467 break;
1468 }
1469 }
1470
1471 static void
1472 sasysctlinit(void *context, int pending)
1473 {
1474 struct cam_periph *periph;
1475 struct sa_softc *softc;
1476 char tmpstr[80], tmpstr2[80];
1477
1478 periph = (struct cam_periph *)context;
1479 /*
1480 * If the periph is invalid, no need to setup the sysctls.
1481 */
1482 if (periph->flags & CAM_PERIPH_INVALID)
1483 goto bailout;
1484
1485 softc = (struct sa_softc *)periph->softc;
1486
1487 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number);
1488 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number);
1489
1490 sysctl_ctx_init(&softc->sysctl_ctx);
1491 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1492 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2,
1493 CTLFLAG_RD, 0, tmpstr);
1494 if (softc->sysctl_tree == NULL)
1495 goto bailout;
1496
1497 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1498 OID_AUTO, "allow_io_split", CTLTYPE_INT | CTLFLAG_RDTUN,
1499 &softc->allow_io_split, 0, "Allow Splitting I/O");
1500 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1501 OID_AUTO, "maxio", CTLTYPE_INT | CTLFLAG_RD,
1502 &softc->maxio, 0, "Maximum I/O size");
1503 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1504 OID_AUTO, "cpi_maxio", CTLTYPE_INT | CTLFLAG_RD,
1505 &softc->cpi_maxio, 0, "Maximum Controller I/O size");
1506
1507 bailout:
1508 /*
1509 * Release the reference that was held when this task was enqueued.
1510 */
1511 cam_periph_release(periph);
1512 }
1513
1514 static cam_status
1515 saregister(struct cam_periph *periph, void *arg)
1516 {
1517 struct sa_softc *softc;
1518 struct ccb_getdev *cgd;
1519 struct ccb_pathinq cpi;
1520 caddr_t match;
1521 char tmpstr[80];
1522 int i;
1523
1524 cgd = (struct ccb_getdev *)arg;
1525 if (cgd == NULL) {
1526 printf("saregister: no getdev CCB, can't register device\n");
1527 return (CAM_REQ_CMP_ERR);
1528 }
1529
1530 softc = (struct sa_softc *)
1531 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO);
1532 if (softc == NULL) {
1533 printf("saregister: Unable to probe new device. "
1534 "Unable to allocate softc\n");
1535 return (CAM_REQ_CMP_ERR);
1536 }
1537 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
1538 softc->state = SA_STATE_NORMAL;
1539 softc->fileno = (daddr_t) -1;
1540 softc->blkno = (daddr_t) -1;
1541
1542 bioq_init(&softc->bio_queue);
1543 periph->softc = softc;
1544
1545 /*
1546 * See if this device has any quirks.
1547 */
1548 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1549 (caddr_t)sa_quirk_table,
1550 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
1551 sizeof(*sa_quirk_table), scsi_inquiry_match);
1552
1553 if (match != NULL) {
1554 softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
1555 softc->last_media_blksize =
1556 ((struct sa_quirk_entry *)match)->prefblk;
1557 } else
1558 softc->quirks = SA_QUIRK_NONE;
1559
1560 bzero(&cpi, sizeof(cpi));
1561 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1562 cpi.ccb_h.func_code = XPT_PATH_INQ;
1563 xpt_action((union ccb *)&cpi);
1564
1565 /*
1566 * The SA driver supports a blocksize, but we don't know the
1567 * blocksize until we media is inserted. So, set a flag to
1568 * indicate that the blocksize is unavailable right now.
1569 */
1570 cam_periph_unlock(periph);
1571 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0,
1572 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
1573 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE);
1574
1575 /*
1576 * Load the default value that is either compiled in, or loaded
1577 * in the global kern.cam.sa.allow_io_split tunable.
1578 */
1579 softc->allow_io_split = sa_allow_io_split;
1580
1581 /*
1582 * Load a per-instance tunable, if it exists. NOTE that this
1583 * tunable WILL GO AWAY in FreeBSD 11.0.
1584 */
1585 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split",
1586 periph->unit_number);
1587 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split);
1588
1589 /*
1590 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take
1591 * the smaller of cpi.maxio or MAXPHYS.
1592 */
1593 if (cpi.maxio == 0)
1594 softc->maxio = DFLTPHYS;
1595 else if (cpi.maxio > MAXPHYS)
1596 softc->maxio = MAXPHYS;
1597 else
1598 softc->maxio = cpi.maxio;
1599
1600 /*
1601 * Record the controller's maximum I/O size so we can report it to
1602 * the user later.
1603 */
1604 softc->cpi_maxio = cpi.maxio;
1605
1606 /*
1607 * By default we tell physio that we do not want our I/O split.
1608 * The user needs to have a 1:1 mapping between the size of his
1609 * write to a tape character device and the size of the write
1610 * that actually goes down to the drive.
1611 */
1612 if (softc->allow_io_split == 0)
1613 softc->si_flags = SI_NOSPLIT;
1614 else
1615 softc->si_flags = 0;
1616
1617 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph);
1618
1619 /*
1620 * If the SIM supports unmapped I/O, let physio know that we can
1621 * handle unmapped buffers.
1622 */
1623 if (cpi.hba_misc & PIM_UNMAPPED)
1624 softc->si_flags |= SI_UNMAPPED;
1625
1626 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV,
1627 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1628 0660, "%s%d.ctl", periph->periph_name, periph->unit_number);
1629 softc->devs.ctl_dev->si_drv1 = periph;
1630 softc->devs.ctl_dev->si_iosize_max = softc->maxio;
1631 softc->devs.ctl_dev->si_flags |= softc->si_flags;
1632
1633 for (i = 0; i < SA_NUM_MODES; i++) {
1634
1635 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw,
1636 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R),
1637 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d",
1638 periph->periph_name, periph->unit_number, i);
1639 softc->devs.mode_devs[i].r_dev->si_drv1 = periph;
1640 softc->devs.mode_devs[i].r_dev->si_iosize_max = softc->maxio;
1641 softc->devs.mode_devs[i].r_dev->si_flags |= softc->si_flags;
1642
1643 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw,
1644 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR),
1645 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d",
1646 periph->periph_name, periph->unit_number, i);
1647 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph;
1648 softc->devs.mode_devs[i].nr_dev->si_iosize_max = softc->maxio;
1649 softc->devs.mode_devs[i].nr_dev->si_flags |= softc->si_flags;
1650
1651 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw,
1652 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER),
1653 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d",
1654 periph->periph_name, periph->unit_number, i);
1655 softc->devs.mode_devs[i].er_dev->si_drv1 = periph;
1656 softc->devs.mode_devs[i].er_dev->si_iosize_max = softc->maxio;
1657 softc->devs.mode_devs[i].er_dev->si_flags |= softc->si_flags;
1658
1659 /*
1660 * Make the (well known) aliases for the first mode.
1661 */
1662 if (i == 0) {
1663 struct cdev *alias;
1664
1665 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev,
1666 "%s%d", periph->periph_name, periph->unit_number);
1667 alias->si_drv1 = periph;
1668 alias->si_iosize_max = softc->maxio;
1669 alias->si_flags |= softc->si_flags;
1670
1671 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev,
1672 "n%s%d", periph->periph_name, periph->unit_number);
1673 alias->si_drv1 = periph;
1674 alias->si_iosize_max = softc->maxio;
1675 alias->si_flags |= softc->si_flags;
1676
1677 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev,
1678 "e%s%d", periph->periph_name, periph->unit_number);
1679 alias->si_drv1 = periph;
1680 alias->si_iosize_max = softc->maxio;
1681 alias->si_flags |= softc->si_flags;
1682 }
1683 }
1684 cam_periph_lock(periph);
1685
1686 /*
1687 * Bump the peripheral refcount for the sysctl thread, in case we
1688 * get invalidated before the thread has a chance to run.
1689 */
1690 cam_periph_acquire(periph);
1691 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task);
1692
1693 /*
1694 * Add an async callback so that we get
1695 * notified if this device goes away.
1696 */
1697 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path);
1698
1699 xpt_announce_periph(periph, NULL);
1700 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING);
1701
1702 return (CAM_REQ_CMP);
1703 }
1704
1705 static void
1706 sastart(struct cam_periph *periph, union ccb *start_ccb)
1707 {
1708 struct sa_softc *softc;
1709
1710 softc = (struct sa_softc *)periph->softc;
1711
1712 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n"));
1713
1714
1715 switch (softc->state) {
1716 case SA_STATE_NORMAL:
1717 {
1718 /* Pull a buffer from the queue and get going on it */
1719 struct bio *bp;
1720
1721 /*
1722 * See if there is a buf with work for us to do..
1723 */
1724 bp = bioq_first(&softc->bio_queue);
1725 if (periph->immediate_priority <= periph->pinfo.priority) {
1726 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1727 ("queuing for immediate ccb\n"));
1728 Set_CCB_Type(start_ccb, SA_CCB_WAITING);
1729 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1730 periph_links.sle);
1731 periph->immediate_priority = CAM_PRIORITY_NONE;
1732 wakeup(&periph->ccb_list);
1733 } else if (bp == NULL) {
1734 xpt_release_ccb(start_ccb);
1735 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) {
1736 struct bio *done_bp;
1737 again:
1738 softc->queue_count--;
1739 bioq_remove(&softc->bio_queue, bp);
1740 bp->bio_resid = bp->bio_bcount;
1741 done_bp = bp;
1742 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
1743 /*
1744 * We now just clear errors in this case
1745 * and let the residual be the notifier.
1746 */
1747 bp->bio_error = 0;
1748 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
1749 /*
1750 * This can only happen if we're reading
1751 * in fixed length mode. In this case,
1752 * we dump the rest of the list the
1753 * same way.
1754 */
1755 bp->bio_error = 0;
1756 if (bioq_first(&softc->bio_queue) != NULL) {
1757 biodone(done_bp);
1758 goto again;
1759 }
1760 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
1761 bp->bio_error = EIO;
1762 bp->bio_flags |= BIO_ERROR;
1763 }
1764 bp = bioq_first(&softc->bio_queue);
1765 /*
1766 * Only if we have no other buffers queued up
1767 * do we clear the pending error flag.
1768 */
1769 if (bp == NULL)
1770 softc->flags &= ~SA_FLAG_ERR_PENDING;
1771 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1772 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, "
1773 "%d more buffers queued up\n",
1774 (softc->flags & SA_FLAG_ERR_PENDING),
1775 (bp != NULL)? "not " : " ", softc->queue_count));
1776 xpt_release_ccb(start_ccb);
1777 biodone(done_bp);
1778 } else {
1779 u_int32_t length;
1780
1781 bioq_remove(&softc->bio_queue, bp);
1782 softc->queue_count--;
1783
1784 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1785 if (softc->blk_shift != 0) {
1786 length =
1787 bp->bio_bcount >> softc->blk_shift;
1788 } else if (softc->media_blksize != 0) {
1789 length = bp->bio_bcount /
1790 softc->media_blksize;
1791 } else {
1792 bp->bio_error = EIO;
1793 xpt_print(periph->path, "zero blocksize"
1794 " for FIXED length writes?\n");
1795 biodone(bp);
1796 break;
1797 }
1798 #if 0
1799 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1800 ("issuing a %d fixed record %s\n",
1801 length, (bp->bio_cmd == BIO_READ)? "read" :
1802 "write"));
1803 #endif
1804 } else {
1805 length = bp->bio_bcount;
1806 #if 0
1807 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1808 ("issuing a %d variable byte %s\n",
1809 length, (bp->bio_cmd == BIO_READ)? "read" :
1810 "write"));
1811 #endif
1812 }
1813 devstat_start_transaction_bio(softc->device_stats, bp);
1814 /*
1815 * Some people have theorized that we should
1816 * suppress illegal length indication if we are
1817 * running in variable block mode so that we don't
1818 * have to request sense every time our requested
1819 * block size is larger than the written block.
1820 * The residual information from the ccb allows
1821 * us to identify this situation anyway. The only
1822 * problem with this is that we will not get
1823 * information about blocks that are larger than
1824 * our read buffer unless we set the block size
1825 * in the mode page to something other than 0.
1826 *
1827 * I believe that this is a non-issue. If user apps
1828 * don't adjust their read size to match our record
1829 * size, that's just life. Anyway, the typical usage
1830 * would be to issue, e.g., 64KB reads and occasionally
1831 * have to do deal with 512 byte or 1KB intermediate
1832 * records.
1833 */
1834 softc->dsreg = (bp->bio_cmd == BIO_READ)?
1835 MTIO_DSREG_RD : MTIO_DSREG_WR;
1836 scsi_sa_read_write(&start_ccb->csio, 0, sadone,
1837 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ?
1838 SCSI_RW_READ : SCSI_RW_WRITE) |
1839 ((bp->bio_flags & BIO_UNMAPPED) != 0 ?
1840 SCSI_RW_BIO : 0), FALSE,
1841 (softc->flags & SA_FLAG_FIXED) != 0, length,
1842 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp :
1843 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE,
1844 IO_TIMEOUT);
1845 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
1846 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO);
1847 start_ccb->ccb_h.ccb_bp = bp;
1848 bp = bioq_first(&softc->bio_queue);
1849 xpt_action(start_ccb);
1850 }
1851
1852 if (bp != NULL) {
1853 /* Have more work to do, so ensure we stay scheduled */
1854 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1855 }
1856 break;
1857 }
1858 case SA_STATE_ABNORMAL:
1859 default:
1860 panic("state 0x%x in sastart", softc->state);
1861 break;
1862 }
1863 }
1864
1865
1866 static void
1867 sadone(struct cam_periph *periph, union ccb *done_ccb)
1868 {
1869 struct sa_softc *softc;
1870 struct ccb_scsiio *csio;
1871
1872 softc = (struct sa_softc *)periph->softc;
1873 csio = &done_ccb->csio;
1874 switch (CCB_Type(csio)) {
1875 case SA_CCB_BUFFER_IO:
1876 {
1877 struct bio *bp;
1878 int error;
1879
1880 softc->dsreg = MTIO_DSREG_REST;
1881 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1882 error = 0;
1883 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1884 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
1885 /*
1886 * A retry was scheduled, so just return.
1887 */
1888 return;
1889 }
1890 }
1891
1892 if (error == EIO) {
1893
1894 /*
1895 * Catastrophic error. Mark the tape as frozen
1896 * (we no longer know tape position).
1897 *
1898 * Return all queued I/O with EIO, and unfreeze
1899 * our queue so that future transactions that
1900 * attempt to fix this problem can get to the
1901 * device.
1902 *
1903 */
1904
1905 softc->flags |= SA_FLAG_TAPE_FROZEN;
1906 bioq_flush(&softc->bio_queue, NULL, EIO);
1907 }
1908 if (error != 0) {
1909 bp->bio_resid = bp->bio_bcount;
1910 bp->bio_error = error;
1911 bp->bio_flags |= BIO_ERROR;
1912 /*
1913 * In the error case, position is updated in saerror.
1914 */
1915 } else {
1916 bp->bio_resid = csio->resid;
1917 bp->bio_error = 0;
1918 if (csio->resid != 0) {
1919 bp->bio_flags |= BIO_ERROR;
1920 }
1921 if (bp->bio_cmd == BIO_WRITE) {
1922 softc->flags |= SA_FLAG_TAPE_WRITTEN;
1923 softc->filemarks = 0;
1924 }
1925 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
1926 (softc->blkno != (daddr_t) -1)) {
1927 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1928 u_int32_t l;
1929 if (softc->blk_shift != 0) {
1930 l = bp->bio_bcount >>
1931 softc->blk_shift;
1932 } else {
1933 l = bp->bio_bcount /
1934 softc->media_blksize;
1935 }
1936 softc->blkno += (daddr_t) l;
1937 } else {
1938 softc->blkno++;
1939 }
1940 }
1941 }
1942 /*
1943 * If we had an error (immediate or pending),
1944 * release the device queue now.
1945 */
1946 if (error || (softc->flags & SA_FLAG_ERR_PENDING))
1947 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1948 if (error || bp->bio_resid) {
1949 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1950 ("error %d resid %ld count %ld\n", error,
1951 bp->bio_resid, bp->bio_bcount));
1952 }
1953 biofinish(bp, softc->device_stats, 0);
1954 break;
1955 }
1956 case SA_CCB_WAITING:
1957 {
1958 /* Caller will release the CCB */
1959 wakeup(&done_ccb->ccb_h.cbfcnp);
1960 return;
1961 }
1962 }
1963 xpt_release_ccb(done_ccb);
1964 }
1965
1966 /*
1967 * Mount the tape (make sure it's ready for I/O).
1968 */
1969 static int
1970 samount(struct cam_periph *periph, int oflags, struct cdev *dev)
1971 {
1972 struct sa_softc *softc;
1973 union ccb *ccb;
1974 int error;
1975
1976 /*
1977 * oflags can be checked for 'kind' of open (read-only check) - later
1978 * dev can be checked for a control-mode or compression open - later
1979 */
1980 UNUSED_PARAMETER(oflags);
1981 UNUSED_PARAMETER(dev);
1982
1983
1984 softc = (struct sa_softc *)periph->softc;
1985
1986 /*
1987 * This should determine if something has happend since the last
1988 * open/mount that would invalidate the mount. We do *not* want
1989 * to retry this command- we just want the status. But we only
1990 * do this if we're mounted already- if we're not mounted,
1991 * we don't care about the unit read state and can instead use
1992 * this opportunity to attempt to reserve the tape unit.
1993 */
1994
1995 if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
1996 ccb = cam_periph_getccb(periph, 1);
1997 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1998 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1999 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2000 softc->device_stats);
2001 if (error == ENXIO) {
2002 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
2003 scsi_test_unit_ready(&ccb->csio, 0, sadone,
2004 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
2005 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2006 softc->device_stats);
2007 } else if (error) {
2008 /*
2009 * We don't need to freeze the tape because we
2010 * will now attempt to rewind/load it.
2011 */
2012 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
2013 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2014 xpt_print(periph->path,
2015 "error %d on TUR in samount\n", error);
2016 }
2017 }
2018 } else {
2019 error = sareservereleaseunit(periph, TRUE);
2020 if (error) {
2021 return (error);
2022 }
2023 ccb = cam_periph_getccb(periph, 1);
2024 scsi_test_unit_ready(&ccb->csio, 0, sadone,
2025 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
2026 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2027 softc->device_stats);
2028 }
2029
2030 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
2031 struct scsi_read_block_limits_data *rblim = NULL;
2032 int comp_enabled, comp_supported;
2033 u_int8_t write_protect, guessing = 0;
2034
2035 /*
2036 * Clear out old state.
2037 */
2038 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
2039 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
2040 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP);
2041 softc->filemarks = 0;
2042
2043 /*
2044 * *Very* first off, make sure we're loaded to BOT.
2045 */
2046 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2047 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
2048 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2049 softc->device_stats);
2050
2051 /*
2052 * In case this doesn't work, do a REWIND instead
2053 */
2054 if (error) {
2055 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
2056 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
2057 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2058 softc->device_stats);
2059 }
2060 if (error) {
2061 xpt_release_ccb(ccb);
2062 goto exit;
2063 }
2064
2065 /*
2066 * Do a dummy test read to force access to the
2067 * media so that the drive will really know what's
2068 * there. We actually don't really care what the
2069 * blocksize on tape is and don't expect to really
2070 * read a full record.
2071 */
2072 rblim = (struct scsi_read_block_limits_data *)
2073 malloc(8192, M_SCSISA, M_NOWAIT);
2074 if (rblim == NULL) {
2075 xpt_print(periph->path, "no memory for test read\n");
2076 xpt_release_ccb(ccb);
2077 error = ENOMEM;
2078 goto exit;
2079 }
2080
2081 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
2082 scsi_sa_read_write(&ccb->csio, 0, sadone,
2083 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
2084 (void *) rblim, 8192, SSD_FULL_SIZE,
2085 IO_TIMEOUT);
2086 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2087 softc->device_stats);
2088 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
2089 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
2090 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
2091 SF_NO_PRINT | SF_RETRY_UA,
2092 softc->device_stats);
2093 if (error) {
2094 xpt_print(periph->path,
2095 "unable to rewind after test read\n");
2096 xpt_release_ccb(ccb);
2097 goto exit;
2098 }
2099 }
2100
2101 /*
2102 * Next off, determine block limits.
2103 */
2104 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
2105 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2106
2107 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
2108 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats);
2109
2110 xpt_release_ccb(ccb);
2111
2112 if (error != 0) {
2113 /*
2114 * If it's less than SCSI-2, READ BLOCK LIMITS is not
2115 * a MANDATORY command. Anyway- it doesn't matter-
2116 * we can proceed anyway.
2117 */
2118 softc->blk_gran = 0;
2119 softc->max_blk = ~0;
2120 softc->min_blk = 0;
2121 } else {
2122 if (softc->scsi_rev >= SCSI_REV_SPC) {
2123 softc->blk_gran = RBL_GRAN(rblim);
2124 } else {
2125 softc->blk_gran = 0;
2126 }
2127 /*
2128 * We take max_blk == min_blk to mean a default to
2129 * fixed mode- but note that whatever we get out of
2130 * sagetparams below will actually determine whether
2131 * we are actually *in* fixed mode.
2132 */
2133 softc->max_blk = scsi_3btoul(rblim->maximum);
2134 softc->min_blk = scsi_2btoul(rblim->minimum);
2135
2136
2137 }
2138 /*
2139 * Next, perform a mode sense to determine
2140 * current density, blocksize, compression etc.
2141 */
2142 error = sagetparams(periph, SA_PARAM_ALL,
2143 &softc->media_blksize,
2144 &softc->media_density,
2145 &softc->media_numblks,
2146 &softc->buffer_mode, &write_protect,
2147 &softc->speed, &comp_supported,
2148 &comp_enabled, &softc->comp_algorithm,
2149 NULL);
2150
2151 if (error != 0) {
2152 /*
2153 * We could work a little harder here. We could
2154 * adjust our attempts to get information. It
2155 * might be an ancient tape drive. If someone
2156 * nudges us, we'll do that.
2157 */
2158 goto exit;
2159 }
2160
2161 /*
2162 * If no quirk has determined that this is a device that is
2163 * preferred to be in fixed or variable mode, now is the time
2164 * to find out.
2165 */
2166 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
2167 guessing = 1;
2168 /*
2169 * This could be expensive to find out. Luckily we
2170 * only need to do this once. If we start out in
2171 * 'default' mode, try and set ourselves to one
2172 * of the densities that would determine a wad
2173 * of other stuff. Go from highest to lowest.
2174 */
2175 if (softc->media_density == SCSI_DEFAULT_DENSITY) {
2176 int i;
2177 static u_int8_t ctry[] = {
2178 SCSI_DENSITY_HALFINCH_PE,
2179 SCSI_DENSITY_HALFINCH_6250C,
2180 SCSI_DENSITY_HALFINCH_6250,
2181 SCSI_DENSITY_HALFINCH_1600,
2182 SCSI_DENSITY_HALFINCH_800,
2183 SCSI_DENSITY_QIC_4GB,
2184 SCSI_DENSITY_QIC_2GB,
2185 SCSI_DENSITY_QIC_525_320,
2186 SCSI_DENSITY_QIC_150,
2187 SCSI_DENSITY_QIC_120,
2188 SCSI_DENSITY_QIC_24,
2189 SCSI_DENSITY_QIC_11_9TRK,
2190 SCSI_DENSITY_QIC_11_4TRK,
2191 SCSI_DENSITY_QIC_1320,
2192 SCSI_DENSITY_QIC_3080,
2193 0
2194 };
2195 for (i = 0; ctry[i]; i++) {
2196 error = sasetparams(periph,
2197 SA_PARAM_DENSITY, 0, ctry[i],
2198 0, SF_NO_PRINT);
2199 if (error == 0) {
2200 softc->media_density = ctry[i];
2201 break;
2202 }
2203 }
2204 }
2205 switch (softc->media_density) {
2206 case SCSI_DENSITY_QIC_11_4TRK:
2207 case SCSI_DENSITY_QIC_11_9TRK:
2208 case SCSI_DENSITY_QIC_24:
2209 case SCSI_DENSITY_QIC_120:
2210 case SCSI_DENSITY_QIC_150:
2211 case SCSI_DENSITY_QIC_525_320:
2212 case SCSI_DENSITY_QIC_1320:
2213 case SCSI_DENSITY_QIC_3080:
2214 softc->quirks &= ~SA_QUIRK_2FM;
2215 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2216 softc->last_media_blksize = 512;
2217 break;
2218 case SCSI_DENSITY_QIC_4GB:
2219 case SCSI_DENSITY_QIC_2GB:
2220 softc->quirks &= ~SA_QUIRK_2FM;
2221 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2222 softc->last_media_blksize = 1024;
2223 break;
2224 default:
2225 softc->last_media_blksize =
2226 softc->media_blksize;
2227 softc->quirks |= SA_QUIRK_VARIABLE;
2228 break;
2229 }
2230 }
2231
2232 /*
2233 * If no quirk has determined that this is a device that needs
2234 * to have 2 Filemarks at EOD, now is the time to find out.
2235 */
2236
2237 if ((softc->quirks & SA_QUIRK_2FM) == 0) {
2238 switch (softc->media_density) {
2239 case SCSI_DENSITY_HALFINCH_800:
2240 case SCSI_DENSITY_HALFINCH_1600:
2241 case SCSI_DENSITY_HALFINCH_6250:
2242 case SCSI_DENSITY_HALFINCH_6250C:
2243 case SCSI_DENSITY_HALFINCH_PE:
2244 softc->quirks &= ~SA_QUIRK_1FM;
2245 softc->quirks |= SA_QUIRK_2FM;
2246 break;
2247 default:
2248 break;
2249 }
2250 }
2251
2252 /*
2253 * Now validate that some info we got makes sense.
2254 */
2255 if ((softc->max_blk < softc->media_blksize) ||
2256 (softc->min_blk > softc->media_blksize &&
2257 softc->media_blksize)) {
2258 xpt_print(periph->path,
2259 "BLOCK LIMITS (%d..%d) could not match current "
2260 "block settings (%d)- adjusting\n", softc->min_blk,
2261 softc->max_blk, softc->media_blksize);
2262 softc->max_blk = softc->min_blk =
2263 softc->media_blksize;
2264 }
2265
2266 /*
2267 * Now put ourselves into the right frame of mind based
2268 * upon quirks...
2269 */
2270 tryagain:
2271 /*
2272 * If we want to be in FIXED mode and our current blocksize
2273 * is not equal to our last blocksize (if nonzero), try and
2274 * set ourselves to this last blocksize (as the 'preferred'
2275 * block size). The initial quirkmatch at registry sets the
2276 * initial 'last' blocksize. If, for whatever reason, this
2277 * 'last' blocksize is zero, set the blocksize to 512,
2278 * or min_blk if that's larger.
2279 */
2280 if ((softc->quirks & SA_QUIRK_FIXED) &&
2281 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
2282 (softc->media_blksize != softc->last_media_blksize)) {
2283 softc->media_blksize = softc->last_media_blksize;
2284 if (softc->media_blksize == 0) {
2285 softc->media_blksize = 512;
2286 if (softc->media_blksize < softc->min_blk) {
2287 softc->media_blksize = softc->min_blk;
2288 }
2289 }
2290 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2291 softc->media_blksize, 0, 0, SF_NO_PRINT);
2292 if (error) {
2293 xpt_print(periph->path,
2294 "unable to set fixed blocksize to %d\n",
2295 softc->media_blksize);
2296 goto exit;
2297 }
2298 }
2299
2300 if ((softc->quirks & SA_QUIRK_VARIABLE) &&
2301 (softc->media_blksize != 0)) {
2302 softc->last_media_blksize = softc->media_blksize;
2303 softc->media_blksize = 0;
2304 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2305 0, 0, 0, SF_NO_PRINT);
2306 if (error) {
2307 /*
2308 * If this fails and we were guessing, just
2309 * assume that we got it wrong and go try
2310 * fixed block mode. Don't even check against
2311 * density code at this point.
2312 */
2313 if (guessing) {
2314 softc->quirks &= ~SA_QUIRK_VARIABLE;
2315 softc->quirks |= SA_QUIRK_FIXED;
2316 if (softc->last_media_blksize == 0)
2317 softc->last_media_blksize = 512;
2318 goto tryagain;
2319 }
2320 xpt_print(periph->path,
2321 "unable to set variable blocksize\n");
2322 goto exit;
2323 }
2324 }
2325
2326 /*
2327 * Now that we have the current block size,
2328 * set up some parameters for sastart's usage.
2329 */
2330 if (softc->media_blksize) {
2331 softc->flags |= SA_FLAG_FIXED;
2332 if (powerof2(softc->media_blksize)) {
2333 softc->blk_shift =
2334 ffs(softc->media_blksize) - 1;
2335 softc->blk_mask = softc->media_blksize - 1;
2336 } else {
2337 softc->blk_mask = ~0;
2338 softc->blk_shift = 0;
2339 }
2340 } else {
2341 /*
2342 * The SCSI-3 spec allows 0 to mean "unspecified".
2343 * The SCSI-1 spec allows 0 to mean 'infinite'.
2344 *
2345 * Either works here.
2346 */
2347 if (softc->max_blk == 0) {
2348 softc->max_blk = ~0;
2349 }
2350 softc->blk_shift = 0;
2351 if (softc->blk_gran != 0) {
2352 softc->blk_mask = softc->blk_gran - 1;
2353 } else {
2354 softc->blk_mask = 0;
2355 }
2356 }
2357
2358 if (write_protect)
2359 softc->flags |= SA_FLAG_TAPE_WP;
2360
2361 if (comp_supported) {
2362 if (softc->saved_comp_algorithm == 0)
2363 softc->saved_comp_algorithm =
2364 softc->comp_algorithm;
2365 softc->flags |= SA_FLAG_COMP_SUPP;
2366 if (comp_enabled)
2367 softc->flags |= SA_FLAG_COMP_ENABLED;
2368 } else
2369 softc->flags |= SA_FLAG_COMP_UNSUPP;
2370
2371 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
2372 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
2373 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
2374 0, 0, SF_NO_PRINT);
2375 if (error == 0) {
2376 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
2377 } else {
2378 xpt_print(periph->path,
2379 "unable to set buffered mode\n");
2380 }
2381 error = 0; /* not an error */
2382 }
2383
2384
2385 if (error == 0) {
2386 softc->flags |= SA_FLAG_TAPE_MOUNTED;
2387 }
2388 exit:
2389 if (rblim != NULL)
2390 free(rblim, M_SCSISA);
2391
2392 if (error != 0) {
2393 softc->dsreg = MTIO_DSREG_NIL;
2394 } else {
2395 softc->fileno = softc->blkno = 0;
2396 softc->dsreg = MTIO_DSREG_REST;
2397 }
2398 #ifdef SA_1FM_AT_EOD
2399 if ((softc->quirks & SA_QUIRK_2FM) == 0)
2400 softc->quirks |= SA_QUIRK_1FM;
2401 #else
2402 if ((softc->quirks & SA_QUIRK_1FM) == 0)
2403 softc->quirks |= SA_QUIRK_2FM;
2404 #endif
2405 } else
2406 xpt_release_ccb(ccb);
2407
2408 /*
2409 * If we return an error, we're not mounted any more,
2410 * so release any device reservation.
2411 */
2412 if (error != 0) {
2413 (void) sareservereleaseunit(periph, FALSE);
2414 } else {
2415 /*
2416 * Clear I/O residual.
2417 */
2418 softc->last_io_resid = 0;
2419 softc->last_ctl_resid = 0;
2420 }
2421 return (error);
2422 }
2423
2424 /*
2425 * How many filemarks do we need to write if we were to terminate the
2426 * tape session right now? Note that this can be a negative number
2427 */
2428
2429 static int
2430 samarkswanted(struct cam_periph *periph)
2431 {
2432 int markswanted;
2433 struct sa_softc *softc;
2434
2435 softc = (struct sa_softc *)periph->softc;
2436 markswanted = 0;
2437 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
2438 markswanted++;
2439 if (softc->quirks & SA_QUIRK_2FM)
2440 markswanted++;
2441 }
2442 markswanted -= softc->filemarks;
2443 return (markswanted);
2444 }
2445
2446 static int
2447 sacheckeod(struct cam_periph *periph)
2448 {
2449 int error;
2450 int markswanted;
2451
2452 markswanted = samarkswanted(periph);
2453
2454 if (markswanted > 0) {
2455 error = sawritefilemarks(periph, markswanted, FALSE);
2456 } else {
2457 error = 0;
2458 }
2459 return (error);
2460 }
2461
2462 static int
2463 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
2464 {
2465 static const char *toobig =
2466 "%d-byte tape record bigger than supplied buffer\n";
2467 struct cam_periph *periph;
2468 struct sa_softc *softc;
2469 struct ccb_scsiio *csio;
2470 struct scsi_sense_data *sense;
2471 uint64_t resid = 0;
2472 int64_t info = 0;
2473 cam_status status;
2474 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid;
2475 int sense_len;
2476 uint8_t stream_bits;
2477
2478 periph = xpt_path_periph(ccb->ccb_h.path);
2479 softc = (struct sa_softc *)periph->softc;
2480 csio = &ccb->csio;
2481 sense = &csio->sense_data;
2482 sense_len = csio->sense_len - csio->sense_resid;
2483 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key,
2484 &asc, &ascq, /*show_errors*/ 1);
2485 if (asc != -1 && ascq != -1)
2486 aqvalid = 1;
2487 else
2488 aqvalid = 0;
2489 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0)
2490 stream_valid = 1;
2491 else
2492 stream_valid = 0;
2493 error = 0;
2494
2495 status = csio->ccb_h.status & CAM_STATUS_MASK;
2496
2497 /*
2498 * Calculate/latch up, any residuals... We do this in a funny 2-step
2499 * so we can print stuff here if we have CAM_DEBUG enabled for this
2500 * unit.
2501 */
2502 if (status == CAM_SCSI_STATUS_ERROR) {
2503 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid,
2504 &info) == 0) {
2505 if ((softc->flags & SA_FLAG_FIXED) != 0)
2506 resid *= softc->media_blksize;
2507 } else {
2508 resid = csio->dxfer_len;
2509 info = resid;
2510 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2511 if (softc->media_blksize)
2512 info /= softc->media_blksize;
2513 }
2514 }
2515 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) {
2516 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
2517 sizeof (struct scsi_sense_data));
2518 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
2519 (int) csio->cdb_len);
2520 softc->last_io_resid = resid;
2521 softc->last_resid_was_io = 1;
2522 } else {
2523 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
2524 sizeof (struct scsi_sense_data));
2525 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
2526 (int) csio->cdb_len);
2527 softc->last_ctl_resid = resid;
2528 softc->last_resid_was_io = 0;
2529 }
2530 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
2531 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd "
2532 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
2533 sense_key, asc, ascq, status,
2534 (stream_valid) ? stream_bits : 0, (intmax_t)resid,
2535 csio->dxfer_len));
2536 } else {
2537 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2538 ("Cam Status 0x%x\n", status));
2539 }
2540
2541 switch (status) {
2542 case CAM_REQ_CMP:
2543 return (0);
2544 case CAM_SCSI_STATUS_ERROR:
2545 /*
2546 * If a read/write command, we handle it here.
2547 */
2548 if (CCB_Type(csio) != SA_CCB_WAITING) {
2549 break;
2550 }
2551 /*
2552 * If this was just EOM/EOP, Filemark, Setmark or ILI detected
2553 * on a non read/write command, we assume it's not an error
2554 * and propagate the residule and return.
2555 */
2556 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) ||
2557 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
2558 csio->resid = resid;
2559 QFRLS(ccb);
2560 return (0);
2561 }
2562 /*
2563 * Otherwise, we let the common code handle this.
2564 */
2565 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2566
2567 /*
2568 * XXX: To Be Fixed
2569 * We cannot depend upon CAM honoring retry counts for these.
2570 */
2571 case CAM_SCSI_BUS_RESET:
2572 case CAM_BDR_SENT:
2573 if (ccb->ccb_h.retry_count <= 0) {
2574 return (EIO);
2575 }
2576 /* FALLTHROUGH */
2577 default:
2578 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2579 }
2580
2581 /*
2582 * Handle filemark, end of tape, mismatched record sizes....
2583 * From this point out, we're only handling read/write cases.
2584 * Handle writes && reads differently.
2585 */
2586
2587 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
2588 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
2589 csio->resid = resid;
2590 error = ENOSPC;
2591 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) {
2592 softc->flags |= SA_FLAG_EOM_PENDING;
2593 /*
2594 * Grotesque as it seems, the few times
2595 * I've actually seen a non-zero resid,
2596 * the tape drive actually lied and had
2597 * written all the data!.
2598 */
2599 csio->resid = 0;
2600 }
2601 } else {
2602 csio->resid = resid;
2603 if (sense_key == SSD_KEY_BLANK_CHECK) {
2604 if (softc->quirks & SA_QUIRK_1FM) {
2605 error = 0;
2606 softc->flags |= SA_FLAG_EOM_PENDING;
2607 } else {
2608 error = EIO;
2609 }
2610 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){
2611 if (softc->flags & SA_FLAG_FIXED) {
2612 error = -1;
2613 softc->flags |= SA_FLAG_EOF_PENDING;
2614 }
2615 /*
2616 * Unconditionally, if we detected a filemark on a read,
2617 * mark that we've run moved a file ahead.
2618 */
2619 if (softc->fileno != (daddr_t) -1) {
2620 softc->fileno++;
2621 softc->blkno = 0;
2622 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
2623 }
2624 }
2625 }
2626
2627 /*
2628 * Incorrect Length usually applies to read, but can apply to writes.
2629 */
2630 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) {
2631 if (info < 0) {
2632 xpt_print(csio->ccb_h.path, toobig,
2633 csio->dxfer_len - info);
2634 csio->resid = csio->dxfer_len;
2635 error = EIO;
2636 } else {
2637 csio->resid = resid;
2638 if (softc->flags & SA_FLAG_FIXED) {
2639 softc->flags |= SA_FLAG_EIO_PENDING;
2640 }
2641 /*
2642 * Bump the block number if we hadn't seen a filemark.
2643 * Do this independent of errors (we've moved anyway).
2644 */
2645 if ((stream_valid == 0) ||
2646 (stream_bits & SSD_FILEMARK) == 0) {
2647 if (softc->blkno != (daddr_t) -1) {
2648 softc->blkno++;
2649 csio->ccb_h.ccb_pflags |=
2650 SA_POSITION_UPDATED;
2651 }
2652 }
2653 }
2654 }
2655
2656 if (error <= 0) {
2657 /*
2658 * Unfreeze the queue if frozen as we're not returning anything
2659 * to our waiters that would indicate an I/O error has occurred
2660 * (yet).
2661 */
2662 QFRLS(ccb);
2663 error = 0;
2664 }
2665 return (error);
2666 }
2667
2668 static int
2669 sagetparams(struct cam_periph *periph, sa_params params_to_get,
2670 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
2671 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
2672 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
2673 sa_comp_t *tcs)
2674 {
2675 union ccb *ccb;
2676 void *mode_buffer;
2677 struct scsi_mode_header_6 *mode_hdr;
2678 struct scsi_mode_blk_desc *mode_blk;
2679 int mode_buffer_len;
2680 struct sa_softc *softc;
2681 u_int8_t cpage;
2682 int error;
2683 cam_status status;
2684
2685 softc = (struct sa_softc *)periph->softc;
2686 ccb = cam_periph_getccb(periph, 1);
2687 if (softc->quirks & SA_QUIRK_NO_CPAGE)
2688 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2689 else
2690 cpage = SA_DATA_COMPRESSION_PAGE;
2691
2692 retry:
2693 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2694
2695 if (params_to_get & SA_PARAM_COMPRESSION) {
2696 if (softc->quirks & SA_QUIRK_NOCOMP) {
2697 *comp_supported = FALSE;
2698 params_to_get &= ~SA_PARAM_COMPRESSION;
2699 } else
2700 mode_buffer_len += sizeof (sa_comp_t);
2701 }
2702
2703 /* XXX Fix M_NOWAIT */
2704 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO);
2705 if (mode_buffer == NULL) {
2706 xpt_release_ccb(ccb);
2707 return (ENOMEM);
2708 }
2709 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2710 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2711
2712 /* it is safe to retry this */
2713 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2714 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
2715 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
2716 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2717
2718 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2719 softc->device_stats);
2720
2721 status = ccb->ccb_h.status & CAM_STATUS_MASK;
2722
2723 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
2724 /*
2725 * Hmm. Let's see if we can try another page...
2726 * If we've already done that, give up on compression
2727 * for this device and remember this for the future
2728 * and attempt the request without asking for compression
2729 * info.
2730 */
2731 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2732 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2733 goto retry;
2734 }
2735 softc->quirks |= SA_QUIRK_NOCOMP;
2736 free(mode_buffer, M_SCSISA);
2737 goto retry;
2738 } else if (status == CAM_SCSI_STATUS_ERROR) {
2739 /* Tell the user about the fatal error. */
2740 scsi_sense_print(&ccb->csio);
2741 goto sagetparamsexit;
2742 }
2743
2744 /*
2745 * If the user only wants the compression information, and
2746 * the device doesn't send back the block descriptor, it's
2747 * no big deal. If the user wants more than just
2748 * compression, though, and the device doesn't pass back the
2749 * block descriptor, we need to send another mode sense to
2750 * get the block descriptor.
2751 */
2752 if ((mode_hdr->blk_desc_len == 0) &&
2753 (params_to_get & SA_PARAM_COMPRESSION) &&
2754 (params_to_get & ~(SA_PARAM_COMPRESSION))) {
2755
2756 /*
2757 * Decrease the mode buffer length by the size of
2758 * the compression page, to make sure the data
2759 * there doesn't get overwritten.
2760 */
2761 mode_buffer_len -= sizeof (sa_comp_t);
2762
2763 /*
2764 * Now move the compression page that we presumably
2765 * got back down the memory chunk a little bit so
2766 * it doesn't get spammed.
2767 */
2768 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
2769 bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
2770
2771 /*
2772 * Now, we issue another mode sense and just ask
2773 * for the block descriptor, etc.
2774 */
2775
2776 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2777 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
2778 mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
2779 SCSIOP_TIMEOUT);
2780
2781 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2782 softc->device_stats);
2783
2784 if (error != 0)
2785 goto sagetparamsexit;
2786 }
2787
2788 if (params_to_get & SA_PARAM_BLOCKSIZE)
2789 *blocksize = scsi_3btoul(mode_blk->blklen);
2790
2791 if (params_to_get & SA_PARAM_NUMBLOCKS)
2792 *numblocks = scsi_3btoul(mode_blk->nblocks);
2793
2794 if (params_to_get & SA_PARAM_BUFF_MODE)
2795 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
2796
2797 if (params_to_get & SA_PARAM_DENSITY)
2798 *density = mode_blk->density;
2799
2800 if (params_to_get & SA_PARAM_WP)
2801 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
2802
2803 if (params_to_get & SA_PARAM_SPEED)
2804 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
2805
2806 if (params_to_get & SA_PARAM_COMPRESSION) {
2807 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
2808 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2809 struct scsi_data_compression_page *cp = &ntcs->dcomp;
2810 *comp_supported =
2811 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
2812 *comp_enabled =
2813 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
2814 *comp_algorithm = scsi_4btoul(cp->comp_algorithm);
2815 } else {
2816 struct scsi_dev_conf_page *cp = &ntcs->dconf;
2817 /*
2818 * We don't really know whether this device supports
2819 * Data Compression if the algorithm field is
2820 * zero. Just say we do.
2821 */
2822 *comp_supported = TRUE;
2823 *comp_enabled =
2824 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
2825 *comp_algorithm = cp->sel_comp_alg;
2826 }
2827 if (tcs != NULL)
2828 bcopy(ntcs, tcs, sizeof (sa_comp_t));
2829 }
2830
2831 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2832 int idx;
2833 char *xyz = mode_buffer;
2834 xpt_print_path(periph->path);
2835 printf("Mode Sense Data=");
2836 for (idx = 0; idx < mode_buffer_len; idx++)
2837 printf(" 0x%02x", xyz[idx] & 0xff);
2838 printf("\n");
2839 }
2840
2841 sagetparamsexit:
2842
2843 xpt_release_ccb(ccb);
2844 free(mode_buffer, M_SCSISA);
2845 return (error);
2846 }
2847
2848 /*
2849 * The purpose of this function is to set one of four different parameters
2850 * for a tape drive:
2851 * - blocksize
2852 * - density
2853 * - compression / compression algorithm
2854 * - buffering mode
2855 *
2856 * The assumption is that this will be called from saioctl(), and therefore
2857 * from a process context. Thus the waiting malloc calls below. If that
2858 * assumption ever changes, the malloc calls should be changed to be
2859 * NOWAIT mallocs.
2860 *
2861 * Any or all of the four parameters may be set when this function is
2862 * called. It should handle setting more than one parameter at once.
2863 */
2864 static int
2865 sasetparams(struct cam_periph *periph, sa_params params_to_set,
2866 u_int32_t blocksize, u_int8_t density, u_int32_t calg,
2867 u_int32_t sense_flags)
2868 {
2869 struct sa_softc *softc;
2870 u_int32_t current_blocksize;
2871 u_int32_t current_calg;
2872 u_int8_t current_density;
2873 u_int8_t current_speed;
2874 int comp_enabled, comp_supported;
2875 void *mode_buffer;
2876 int mode_buffer_len;
2877 struct scsi_mode_header_6 *mode_hdr;
2878 struct scsi_mode_blk_desc *mode_blk;
2879 sa_comp_t *ccomp, *cpage;
2880 int buff_mode;
2881 union ccb *ccb = NULL;
2882 int error;
2883
2884 softc = (struct sa_softc *)periph->softc;
2885
2886 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT);
2887 if (ccomp == NULL)
2888 return (ENOMEM);
2889
2890 /*
2891 * Since it doesn't make sense to set the number of blocks, or
2892 * write protection, we won't try to get the current value. We
2893 * always want to get the blocksize, so we can set it back to the
2894 * proper value.
2895 */
2896 error = sagetparams(periph,
2897 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED,
2898 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL,
2899 ¤t_speed, &comp_supported, &comp_enabled,
2900 ¤t_calg, ccomp);
2901
2902 if (error != 0) {
2903 free(ccomp, M_SCSISA);
2904 return (error);
2905 }
2906
2907 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2908 if (params_to_set & SA_PARAM_COMPRESSION)
2909 mode_buffer_len += sizeof (sa_comp_t);
2910
2911 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO);
2912 if (mode_buffer == NULL) {
2913 free(ccomp, M_SCSISA);
2914 return (ENOMEM);
2915 }
2916
2917 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2918 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2919
2920 ccb = cam_periph_getccb(periph, 1);
2921
2922 retry:
2923
2924 if (params_to_set & SA_PARAM_COMPRESSION) {
2925 if (mode_blk) {
2926 cpage = (sa_comp_t *)&mode_blk[1];
2927 } else {
2928 cpage = (sa_comp_t *)&mode_hdr[1];
2929 }
2930 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2931 cpage->hdr.pagecode &= ~0x80;
2932 } else
2933 cpage = NULL;
2934
2935 /*
2936 * If the caller wants us to set the blocksize, use the one they
2937 * pass in. Otherwise, use the blocksize we got back from the
2938 * mode select above.
2939 */
2940 if (mode_blk) {
2941 if (params_to_set & SA_PARAM_BLOCKSIZE)
2942 scsi_ulto3b(blocksize, mode_blk->blklen);
2943 else
2944 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2945
2946 /*
2947 * Set density if requested, else preserve old density.
2948 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2949 * devices, else density we've latched up in our softc.
2950 */
2951 if (params_to_set & SA_PARAM_DENSITY) {
2952 mode_blk->density = density;
2953 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2954 mode_blk->density = SCSI_SAME_DENSITY;
2955 } else {
2956 mode_blk->density = softc->media_density;
2957 }
2958 }
2959
2960 /*
2961 * For mode selects, these two fields must be zero.
2962 */
2963 mode_hdr->data_length = 0;
2964 mode_hdr->medium_type = 0;
2965
2966 /* set the speed to the current value */
2967 mode_hdr->dev_spec = current_speed;
2968
2969 /* if set, set single-initiator buffering mode */
2970 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) {
2971 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
2972 }
2973
2974 if (mode_blk)
2975 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
2976 else
2977 mode_hdr->blk_desc_len = 0;
2978
2979 /*
2980 * First, if the user wants us to set the compression algorithm or
2981 * just turn compression on, check to make sure that this drive
2982 * supports compression.
2983 */
2984 if (params_to_set & SA_PARAM_COMPRESSION) {
2985 /*
2986 * If the compression algorithm is 0, disable compression.
2987 * If the compression algorithm is non-zero, enable
2988 * compression and set the compression type to the
2989 * specified compression algorithm, unless the algorithm is
2990 * MT_COMP_ENABLE. In that case, we look at the
2991 * compression algorithm that is currently set and if it is
2992 * non-zero, we leave it as-is. If it is zero, and we have
2993 * saved a compression algorithm from a time when
2994 * compression was enabled before, set the compression to
2995 * the saved value.
2996 */
2997 switch (ccomp->hdr.pagecode & ~0x80) {
2998 case SA_DEVICE_CONFIGURATION_PAGE:
2999 {
3000 struct scsi_dev_conf_page *dcp = &cpage->dconf;
3001 if (calg == 0) {
3002 dcp->sel_comp_alg = SA_COMP_NONE;
3003 break;
3004 }
3005 if (calg != MT_COMP_ENABLE) {
3006 dcp->sel_comp_alg = calg;
3007 } else if (dcp->sel_comp_alg == SA_COMP_NONE &&
3008 softc->saved_comp_algorithm != 0) {
3009 dcp->sel_comp_alg = softc->saved_comp_algorithm;
3010 }
3011 break;
3012 }
3013 case SA_DATA_COMPRESSION_PAGE:
3014 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
3015 struct scsi_data_compression_page *dcp = &cpage->dcomp;
3016 if (calg == 0) {
3017 /*
3018 * Disable compression, but leave the
3019 * decompression and the capability bit
3020 * alone.
3021 */
3022 dcp->dce_and_dcc = SA_DCP_DCC;
3023 dcp->dde_and_red |= SA_DCP_DDE;
3024 break;
3025 }
3026 /* enable compression && decompression */
3027 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
3028 dcp->dde_and_red |= SA_DCP_DDE;
3029 /*
3030 * If there, use compression algorithm from caller.
3031 * Otherwise, if there's a saved compression algorithm
3032 * and there is no current algorithm, use the saved
3033 * algorithm. Else parrot back what we got and hope
3034 * for the best.
3035 */
3036 if (calg != MT_COMP_ENABLE) {
3037 scsi_ulto4b(calg, dcp->comp_algorithm);
3038 scsi_ulto4b(calg, dcp->decomp_algorithm);
3039 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
3040 softc->saved_comp_algorithm != 0) {
3041 scsi_ulto4b(softc->saved_comp_algorithm,
3042 dcp->comp_algorithm);
3043 scsi_ulto4b(softc->saved_comp_algorithm,
3044 dcp->decomp_algorithm);
3045 }
3046 break;
3047 }
3048 /*
3049 * Compression does not appear to be supported-
3050 * at least via the DATA COMPRESSION page. It
3051 * would be too much to ask us to believe that
3052 * the page itself is supported, but incorrectly
3053 * reports an ability to manipulate data compression,
3054 * so we'll assume that this device doesn't support
3055 * compression. We can just fall through for that.
3056 */
3057 /* FALLTHROUGH */
3058 default:
3059 /*
3060 * The drive doesn't seem to support compression,
3061 * so turn off the set compression bit.
3062 */
3063 params_to_set &= ~SA_PARAM_COMPRESSION;
3064 xpt_print(periph->path,
3065 "device does not seem to support compression\n");
3066
3067 /*
3068 * If that was the only thing the user wanted us to set,
3069 * clean up allocated resources and return with
3070 * 'operation not supported'.
3071 */
3072 if (params_to_set == SA_PARAM_NONE) {
3073 free(mode_buffer, M_SCSISA);
3074 xpt_release_ccb(ccb);
3075 return (ENODEV);
3076 }
3077
3078 /*
3079 * That wasn't the only thing the user wanted us to set.
3080 * So, decrease the stated mode buffer length by the
3081 * size of the compression mode page.
3082 */
3083 mode_buffer_len -= sizeof(sa_comp_t);
3084 }
3085 }
3086
3087 /* It is safe to retry this operation */
3088 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
3089 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
3090 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3091
3092 error = cam_periph_runccb(ccb, saerror, 0,
3093 sense_flags, softc->device_stats);
3094
3095 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
3096 int idx;
3097 char *xyz = mode_buffer;
3098 xpt_print_path(periph->path);
3099 printf("Err%d, Mode Select Data=", error);
3100 for (idx = 0; idx < mode_buffer_len; idx++)
3101 printf(" 0x%02x", xyz[idx] & 0xff);
3102 printf("\n");
3103 }
3104
3105
3106 if (error) {
3107 /*
3108 * If we can, try without setting density/blocksize.
3109 */
3110 if (mode_blk) {
3111 if ((params_to_set &
3112 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
3113 mode_blk = NULL;
3114 goto retry;
3115 }
3116 } else {
3117 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
3118 cpage = (sa_comp_t *)&mode_blk[1];
3119 }
3120
3121 /*
3122 * If we were setting the blocksize, and that failed, we
3123 * want to set it to its original value. If we weren't
3124 * setting the blocksize, we don't want to change it.
3125 */
3126 scsi_ulto3b(current_blocksize, mode_blk->blklen);
3127
3128 /*
3129 * Set density if requested, else preserve old density.
3130 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
3131 * devices, else density we've latched up in our softc.
3132 */
3133 if (params_to_set & SA_PARAM_DENSITY) {
3134 mode_blk->density = current_density;
3135 } else if (softc->scsi_rev > SCSI_REV_CCS) {
3136 mode_blk->density = SCSI_SAME_DENSITY;
3137 } else {
3138 mode_blk->density = softc->media_density;
3139 }
3140
3141 if (params_to_set & SA_PARAM_COMPRESSION)
3142 bcopy(ccomp, cpage, sizeof (sa_comp_t));
3143
3144 /*
3145 * The retry count is the only CCB field that might have been
3146 * changed that we care about, so reset it back to 1.
3147 */
3148 ccb->ccb_h.retry_count = 1;
3149 cam_periph_runccb(ccb, saerror, 0, sense_flags,
3150 softc->device_stats);
3151 }
3152
3153 xpt_release_ccb(ccb);
3154
3155 if (ccomp != NULL)
3156 free(ccomp, M_SCSISA);
3157
3158 if (params_to_set & SA_PARAM_COMPRESSION) {
3159 if (error) {
3160 softc->flags &= ~SA_FLAG_COMP_ENABLED;
3161 /*
3162 * Even if we get an error setting compression,
3163 * do not say that we don't support it. We could
3164 * have been wrong, or it may be media specific.
3165 * softc->flags &= ~SA_FLAG_COMP_SUPP;
3166 */
3167 softc->saved_comp_algorithm = softc->comp_algorithm;
3168 softc->comp_algorithm = 0;
3169 } else {
3170 softc->flags |= SA_FLAG_COMP_ENABLED;
3171 softc->comp_algorithm = calg;
3172 }
3173 }
3174
3175 free(mode_buffer, M_SCSISA);
3176 return (error);
3177 }
3178
3179 static void
3180 saprevent(struct cam_periph *periph, int action)
3181 {
3182 struct sa_softc *softc;
3183 union ccb *ccb;
3184 int error, sf;
3185
3186 softc = (struct sa_softc *)periph->softc;
3187
3188 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
3189 return;
3190 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
3191 return;
3192
3193 /*
3194 * We can be quiet about illegal requests.
3195 */
3196 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
3197 sf = 0;
3198 } else
3199 sf = SF_QUIET_IR;
3200
3201 ccb = cam_periph_getccb(periph, 1);
3202
3203 /* It is safe to retry this operation */
3204 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
3205 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3206
3207 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats);
3208 if (error == 0) {
3209 if (action == PR_ALLOW)
3210 softc->flags &= ~SA_FLAG_TAPE_LOCKED;
3211 else
3212 softc->flags |= SA_FLAG_TAPE_LOCKED;
3213 }
3214
3215 xpt_release_ccb(ccb);
3216 }
3217
3218 static int
3219 sarewind(struct cam_periph *periph)
3220 {
3221 union ccb *ccb;
3222 struct sa_softc *softc;
3223 int error;
3224
3225 softc = (struct sa_softc *)periph->softc;
3226
3227 ccb = cam_periph_getccb(periph, 1);
3228
3229 /* It is safe to retry this operation */
3230 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3231 SSD_FULL_SIZE, REWIND_TIMEOUT);
3232
3233 softc->dsreg = MTIO_DSREG_REW;
3234 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3235 softc->dsreg = MTIO_DSREG_REST;
3236
3237 xpt_release_ccb(ccb);
3238 if (error == 0)
3239 softc->fileno = softc->blkno = (daddr_t) 0;
3240 else
3241 softc->fileno = softc->blkno = (daddr_t) -1;
3242 return (error);
3243 }
3244
3245 static int
3246 saspace(struct cam_periph *periph, int count, scsi_space_code code)
3247 {
3248 union ccb *ccb;
3249 struct sa_softc *softc;
3250 int error;
3251
3252 softc = (struct sa_softc *)periph->softc;
3253
3254 ccb = cam_periph_getccb(periph, 1);
3255
3256 /* This cannot be retried */
3257
3258 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
3259 SSD_FULL_SIZE, SPACE_TIMEOUT);
3260
3261 /*
3262 * Clear residual because we will be using it.
3263 */
3264 softc->last_ctl_resid = 0;
3265
3266 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
3267 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3268 softc->dsreg = MTIO_DSREG_REST;
3269
3270 xpt_release_ccb(ccb);
3271
3272 /*
3273 * If a spacing operation has failed, we need to invalidate
3274 * this mount.
3275 *
3276 * If the spacing operation was setmarks or to end of recorded data,
3277 * we no longer know our relative position.
3278 *
3279 * If the spacing operations was spacing files in reverse, we
3280 * take account of the residual, but still check against less
3281 * than zero- if we've gone negative, we must have hit BOT.
3282 *
3283 * If the spacing operations was spacing records in reverse and
3284 * we have a residual, we've either hit BOT or hit a filemark.
3285 * In the former case, we know our new record number (0). In
3286 * the latter case, we have absolutely no idea what the real
3287 * record number is- we've stopped between the end of the last
3288 * record in the previous file and the filemark that stopped
3289 * our spacing backwards.
3290 */
3291 if (error) {
3292 softc->fileno = softc->blkno = (daddr_t) -1;
3293 } else if (code == SS_SETMARKS || code == SS_EOD) {
3294 softc->fileno = softc->blkno = (daddr_t) -1;
3295 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
3296 softc->fileno += (count - softc->last_ctl_resid);
3297 if (softc->fileno < 0) /* we must of hit BOT */
3298 softc->fileno = 0;
3299 softc->blkno = 0;
3300 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
3301 softc->blkno += (count - softc->last_ctl_resid);
3302 if (count < 0) {
3303 if (softc->last_ctl_resid || softc->blkno < 0) {
3304 if (softc->fileno == 0) {
3305 softc->blkno = 0;
3306 } else {
3307 softc->blkno = (daddr_t) -1;
3308 }
3309 }
3310 }
3311 }
3312 return (error);
3313 }
3314
3315 static int
3316 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
3317 {
3318 union ccb *ccb;
3319 struct sa_softc *softc;
3320 int error, nwm = 0;
3321
3322 softc = (struct sa_softc *)periph->softc;
3323 if (softc->open_rdonly)
3324 return (EBADF);
3325
3326 ccb = cam_periph_getccb(periph, 1);
3327 /*
3328 * Clear residual because we will be using it.
3329 */
3330 softc->last_ctl_resid = 0;
3331
3332 softc->dsreg = MTIO_DSREG_FMK;
3333 /* this *must* not be retried */
3334 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
3335 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
3336 softc->dsreg = MTIO_DSREG_REST;
3337
3338
3339 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3340
3341 if (error == 0 && nmarks) {
3342 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3343 nwm = nmarks - softc->last_ctl_resid;
3344 softc->filemarks += nwm;
3345 }
3346
3347 xpt_release_ccb(ccb);
3348
3349 /*
3350 * Update relative positions (if we're doing that).
3351 */
3352 if (error) {
3353 softc->fileno = softc->blkno = (daddr_t) -1;
3354 } else if (softc->fileno != (daddr_t) -1) {
3355 softc->fileno += nwm;
3356 softc->blkno = 0;
3357 }
3358 return (error);
3359 }
3360
3361 static int
3362 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3363 {
3364 struct scsi_tape_position_data loc;
3365 union ccb *ccb;
3366 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3367 int error;
3368
3369 /*
3370 * We try and flush any buffered writes here if we were writing
3371 * and we're trying to get hardware block position. It eats
3372 * up performance substantially, but I'm wary of drive firmware.
3373 *
3374 * I think that *logical* block position is probably okay-
3375 * but hardware block position might have to wait for data
3376 * to hit media to be valid. Caveat Emptor.
3377 */
3378
3379 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
3380 error = sawritefilemarks(periph, 0, 0);
3381 if (error && error != EACCES)
3382 return (error);
3383 }
3384
3385 ccb = cam_periph_getccb(periph, 1);
3386 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3387 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3388 softc->dsreg = MTIO_DSREG_RBSY;
3389 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3390 softc->dsreg = MTIO_DSREG_REST;
3391
3392 if (error == 0) {
3393 if (loc.flags & SA_RPOS_UNCERTAIN) {
3394 error = EINVAL; /* nothing is certain */
3395 } else {
3396 *blkptr = scsi_4btoul(loc.firstblk);
3397 }
3398 }
3399
3400 xpt_release_ccb(ccb);
3401 return (error);
3402 }
3403
3404 static int
3405 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3406 {
3407 union ccb *ccb;
3408 struct sa_softc *softc;
3409 int error;
3410
3411 /*
3412 * We used to try and flush any buffered writes here.
3413 * Now we push this onto user applications to either
3414 * flush the pending writes themselves (via a zero count
3415 * WRITE FILEMARKS command) or they can trust their tape
3416 * drive to do this correctly for them.
3417 */
3418
3419 softc = (struct sa_softc *)periph->softc;
3420 ccb = cam_periph_getccb(periph, 1);
3421
3422
3423 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3424 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT);
3425
3426
3427 softc->dsreg = MTIO_DSREG_POS;
3428 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3429 softc->dsreg = MTIO_DSREG_REST;
3430 xpt_release_ccb(ccb);
3431 /*
3432 * Note relative file && block number position as now unknown.
3433 */
3434 softc->fileno = softc->blkno = (daddr_t) -1;
3435 return (error);
3436 }
3437
3438 static int
3439 saretension(struct cam_periph *periph)
3440 {
3441 union ccb *ccb;
3442 struct sa_softc *softc;
3443 int error;
3444
3445 softc = (struct sa_softc *)periph->softc;
3446
3447 ccb = cam_periph_getccb(periph, 1);
3448
3449 /* It is safe to retry this operation */
3450 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3451 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
3452
3453 softc->dsreg = MTIO_DSREG_TEN;
3454 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3455 softc->dsreg = MTIO_DSREG_REST;
3456
3457 xpt_release_ccb(ccb);
3458 if (error == 0)
3459 softc->fileno = softc->blkno = (daddr_t) 0;
3460 else
3461 softc->fileno = softc->blkno = (daddr_t) -1;
3462 return (error);
3463 }
3464
3465 static int
3466 sareservereleaseunit(struct cam_periph *periph, int reserve)
3467 {
3468 union ccb *ccb;
3469 struct sa_softc *softc;
3470 int error;
3471
3472 softc = (struct sa_softc *)periph->softc;
3473 ccb = cam_periph_getccb(periph, 1);
3474
3475 /* It is safe to retry this operation */
3476 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
3477 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
3478 softc->dsreg = MTIO_DSREG_RBSY;
3479 error = cam_periph_runccb(ccb, saerror, 0,
3480 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats);
3481 softc->dsreg = MTIO_DSREG_REST;
3482 xpt_release_ccb(ccb);
3483
3484 /*
3485 * If the error was Illegal Request, then the device doesn't support
3486 * RESERVE/RELEASE. This is not an error.
3487 */
3488 if (error == EINVAL) {
3489 error = 0;
3490 }
3491
3492 return (error);
3493 }
3494
3495 static int
3496 saloadunload(struct cam_periph *periph, int load)
3497 {
3498 union ccb *ccb;
3499 struct sa_softc *softc;
3500 int error;
3501
3502 softc = (struct sa_softc *)periph->softc;
3503
3504 ccb = cam_periph_getccb(periph, 1);
3505
3506 /* It is safe to retry this operation */
3507 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3508 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
3509
3510 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
3511 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3512 softc->dsreg = MTIO_DSREG_REST;
3513 xpt_release_ccb(ccb);
3514
3515 if (error || load == 0)
3516 softc->fileno = softc->blkno = (daddr_t) -1;
3517 else if (error == 0)
3518 softc->fileno = softc->blkno = (daddr_t) 0;
3519 return (error);
3520 }
3521
3522 static int
3523 saerase(struct cam_periph *periph, int longerase)
3524 {
3525
3526 union ccb *ccb;
3527 struct sa_softc *softc;
3528 int error;
3529
3530 softc = (struct sa_softc *)periph->softc;
3531 if (softc->open_rdonly)
3532 return (EBADF);
3533
3534 ccb = cam_periph_getccb(periph, 1);
3535
3536 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
3537 SSD_FULL_SIZE, ERASE_TIMEOUT);
3538
3539 softc->dsreg = MTIO_DSREG_ZER;
3540 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3541 softc->dsreg = MTIO_DSREG_REST;
3542
3543 xpt_release_ccb(ccb);
3544 return (error);
3545 }
3546
3547 #endif /* _KERNEL */
3548
3549 /*
3550 * Read tape block limits command.
3551 */
3552 void
3553 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
3554 void (*cbfcnp)(struct cam_periph *, union ccb *),
3555 u_int8_t tag_action,
3556 struct scsi_read_block_limits_data *rlimit_buf,
3557 u_int8_t sense_len, u_int32_t timeout)
3558 {
3559 struct scsi_read_block_limits *scsi_cmd;
3560
3561 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3562 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
3563 sizeof(*scsi_cmd), timeout);
3564
3565 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
3566 bzero(scsi_cmd, sizeof(*scsi_cmd));
3567 scsi_cmd->opcode = READ_BLOCK_LIMITS;
3568 }
3569
3570 void
3571 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
3572 void (*cbfcnp)(struct cam_periph *, union ccb *),
3573 u_int8_t tag_action, int readop, int sli,
3574 int fixed, u_int32_t length, u_int8_t *data_ptr,
3575 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
3576 {
3577 struct scsi_sa_rw *scsi_cmd;
3578 int read;
3579
3580 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ;
3581
3582 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
3583 scsi_cmd->opcode = read ? SA_READ : SA_WRITE;
3584 scsi_cmd->sli_fixed = 0;
3585 if (sli && read)
3586 scsi_cmd->sli_fixed |= SAR_SLI;
3587 if (fixed)
3588 scsi_cmd->sli_fixed |= SARW_FIXED;
3589 scsi_ulto3b(length, scsi_cmd->length);
3590 scsi_cmd->control = 0;
3591
3592 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) |
3593 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0),
3594 tag_action, data_ptr, dxfer_len, sense_len,
3595 sizeof(*scsi_cmd), timeout);
3596 }
3597
3598 void
3599 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
3600 void (*cbfcnp)(struct cam_periph *, union ccb *),
3601 u_int8_t tag_action, int immediate, int eot,
3602 int reten, int load, u_int8_t sense_len,
3603 u_int32_t timeout)
3604 {
3605 struct scsi_load_unload *scsi_cmd;
3606
3607 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
3608 bzero(scsi_cmd, sizeof(*scsi_cmd));
3609 scsi_cmd->opcode = LOAD_UNLOAD;
3610 if (immediate)
3611 scsi_cmd->immediate = SLU_IMMED;
3612 if (eot)
3613 scsi_cmd->eot_reten_load |= SLU_EOT;
3614 if (reten)
3615 scsi_cmd->eot_reten_load |= SLU_RETEN;
3616 if (load)
3617 scsi_cmd->eot_reten_load |= SLU_LOAD;
3618
3619 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3620 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
3621 }
3622
3623 void
3624 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
3625 void (*cbfcnp)(struct cam_periph *, union ccb *),
3626 u_int8_t tag_action, int immediate, u_int8_t sense_len,
3627 u_int32_t timeout)
3628 {
3629 struct scsi_rewind *scsi_cmd;
3630
3631 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
3632 bzero(scsi_cmd, sizeof(*scsi_cmd));
3633 scsi_cmd->opcode = REWIND;
3634 if (immediate)
3635 scsi_cmd->immediate = SREW_IMMED;
3636
3637 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3638 0, sense_len, sizeof(*scsi_cmd), timeout);
3639 }
3640
3641 void
3642 scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
3643 void (*cbfcnp)(struct cam_periph *, union ccb *),
3644 u_int8_t tag_action, scsi_space_code code,
3645 u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
3646 {
3647 struct scsi_space *scsi_cmd;
3648
3649 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
3650 scsi_cmd->opcode = SPACE;
3651 scsi_cmd->code = code;
3652 scsi_ulto3b(count, scsi_cmd->count);
3653 scsi_cmd->control = 0;
3654
3655 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3656 0, sense_len, sizeof(*scsi_cmd), timeout);
3657 }
3658
3659 void
3660 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
3661 void (*cbfcnp)(struct cam_periph *, union ccb *),
3662 u_int8_t tag_action, int immediate, int setmark,
3663 u_int32_t num_marks, u_int8_t sense_len,
3664 u_int32_t timeout)
3665 {
3666 struct scsi_write_filemarks *scsi_cmd;
3667
3668 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
3669 bzero(scsi_cmd, sizeof(*scsi_cmd));
3670 scsi_cmd->opcode = WRITE_FILEMARKS;
3671 if (immediate)
3672 scsi_cmd->byte2 |= SWFMRK_IMMED;
3673 if (setmark)
3674 scsi_cmd->byte2 |= SWFMRK_WSMK;
3675
3676 scsi_ulto3b(num_marks, scsi_cmd->num_marks);
3677
3678 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3679 0, sense_len, sizeof(*scsi_cmd), timeout);
3680 }
3681
3682 /*
3683 * The reserve and release unit commands differ only by their opcodes.
3684 */
3685 void
3686 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
3687 void (*cbfcnp)(struct cam_periph *, union ccb *),
3688 u_int8_t tag_action, int third_party,
3689 int third_party_id, u_int8_t sense_len,
3690 u_int32_t timeout, int reserve)
3691 {
3692 struct scsi_reserve_release_unit *scsi_cmd;
3693
3694 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
3695 bzero(scsi_cmd, sizeof(*scsi_cmd));
3696
3697 if (reserve)
3698 scsi_cmd->opcode = RESERVE_UNIT;
3699 else
3700 scsi_cmd->opcode = RELEASE_UNIT;
3701
3702 if (third_party) {
3703 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
3704 scsi_cmd->lun_thirdparty |=
3705 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
3706 }
3707
3708 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3709 0, sense_len, sizeof(*scsi_cmd), timeout);
3710 }
3711
3712 void
3713 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
3714 void (*cbfcnp)(struct cam_periph *, union ccb *),
3715 u_int8_t tag_action, int immediate, int long_erase,
3716 u_int8_t sense_len, u_int32_t timeout)
3717 {
3718 struct scsi_erase *scsi_cmd;
3719
3720 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
3721 bzero(scsi_cmd, sizeof(*scsi_cmd));
3722
3723 scsi_cmd->opcode = ERASE;
3724
3725 if (immediate)
3726 scsi_cmd->lun_imm_long |= SE_IMMED;
3727
3728 if (long_erase)
3729 scsi_cmd->lun_imm_long |= SE_LONG;
3730
3731 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3732 0, sense_len, sizeof(*scsi_cmd), timeout);
3733 }
3734
3735 /*
3736 * Read Tape Position command.
3737 */
3738 void
3739 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
3740 void (*cbfcnp)(struct cam_periph *, union ccb *),
3741 u_int8_t tag_action, int hardsoft,
3742 struct scsi_tape_position_data *sbp,
3743 u_int8_t sense_len, u_int32_t timeout)
3744 {
3745 struct scsi_tape_read_position *scmd;
3746
3747 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3748 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
3749 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
3750 bzero(scmd, sizeof(*scmd));
3751 scmd->opcode = READ_POSITION;
3752 scmd->byte1 = hardsoft;
3753 }
3754
3755 /*
3756 * Set Tape Position command.
3757 */
3758 void
3759 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries,
3760 void (*cbfcnp)(struct cam_periph *, union ccb *),
3761 u_int8_t tag_action, int hardsoft, u_int32_t blkno,
3762 u_int8_t sense_len, u_int32_t timeout)
3763 {
3764 struct scsi_tape_locate *scmd;
3765
3766 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3767 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout);
3768 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
3769 bzero(scmd, sizeof(*scmd));
3770 scmd->opcode = LOCATE;
3771 if (hardsoft)
3772 scmd->byte1 |= SA_SPOS_BT;
3773 scsi_ulto4b(blkno, scmd->blkaddr);
3774 }
Cache object: f38dabbe6d75d50b0df9801d409c6faf
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