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[dragonfly.git] / sys / bus / cam / scsi / scsi_sa.c
CommitLineData
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1/*
2 * $FreeBSD: src/sys/cam/scsi/scsi_sa.c,v 1.45.2.13 2002/12/17 17:08:50 trhodes Exp $
1f2de5d4 3 * $DragonFly: src/sys/bus/cam/scsi/scsi_sa.c,v 1.7 2003/08/07 21:16:45 dillon Exp $
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4 *
5 * Implementation of SCSI Sequential Access Peripheral driver for CAM.
6 *
7 * Copyright (c) 1999, 2000 Matthew Jacob
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions, and the following disclaimer,
15 * without modification, immediately at the beginning of the file.
16 * 2. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 */
32
33#include <sys/param.h>
34#include <sys/queue.h>
35#ifdef _KERNEL
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#endif
39#include <sys/types.h>
40#include <sys/buf.h>
41#include <sys/malloc.h>
42#include <sys/mtio.h>
43#include <sys/conf.h>
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44#include <sys/proc.h>
45#include <sys/buf2.h>
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46#include <sys/devicestat.h>
47#include <machine/limits.h>
48
49#ifndef _KERNEL
50#include <stdio.h>
51#include <string.h>
52#endif
53
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54#include "../cam.h"
55#include "../cam_ccb.h"
56#include "../cam_extend.h"
57#include "../cam_periph.h"
58#include "../cam_xpt_periph.h"
59#include "../cam_debug.h"
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61#include "scsi_all.h"
62#include "scsi_message.h"
63#include "scsi_sa.h"
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64
65#ifdef _KERNEL
66
67#include <opt_sa.h>
68
69#ifndef SA_IO_TIMEOUT
70#define SA_IO_TIMEOUT 4
71#endif
72#ifndef SA_SPACE_TIMEOUT
73#define SA_SPACE_TIMEOUT 1 * 60
74#endif
75#ifndef SA_REWIND_TIMEOUT
76#define SA_REWIND_TIMEOUT 2 * 60
77#endif
78#ifndef SA_ERASE_TIMEOUT
79#define SA_ERASE_TIMEOUT 4 * 60
80#endif
81
82#define SCSIOP_TIMEOUT (60 * 1000) /* not an option */
83
84#define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000)
85#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000)
86#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000)
87#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000)
88
89/*
90 * Additional options that can be set for config: SA_1FM_AT_EOT
91 */
92
93#ifndef UNUSED_PARAMETER
94#define UNUSED_PARAMETER(x) x = x
95#endif
96
97#define QFRLS(ccb) \
98 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \
99 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE)
100
101/*
102 * Driver states
103 */
104
105
106typedef enum {
107 SA_STATE_NORMAL, SA_STATE_ABNORMAL
108} sa_state;
109
110#define ccb_pflags ppriv_field0
111#define ccb_bp ppriv_ptr1
112
113#define SA_CCB_BUFFER_IO 0x0
114#define SA_CCB_WAITING 0x1
115#define SA_CCB_TYPEMASK 0x1
116#define SA_POSITION_UPDATED 0x2
117
118#define Set_CCB_Type(x, type) \
119 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \
120 x->ccb_h.ccb_pflags |= type
121
122#define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK)
123
124
125
126typedef enum {
127 SA_FLAG_OPEN = 0x0001,
128 SA_FLAG_FIXED = 0x0002,
129 SA_FLAG_TAPE_LOCKED = 0x0004,
130 SA_FLAG_TAPE_MOUNTED = 0x0008,
131 SA_FLAG_TAPE_WP = 0x0010,
132 SA_FLAG_TAPE_WRITTEN = 0x0020,
133 SA_FLAG_EOM_PENDING = 0x0040,
134 SA_FLAG_EIO_PENDING = 0x0080,
135 SA_FLAG_EOF_PENDING = 0x0100,
136 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
137 SA_FLAG_EOF_PENDING),
138 SA_FLAG_INVALID = 0x0200,
139 SA_FLAG_COMP_ENABLED = 0x0400,
140 SA_FLAG_COMP_SUPP = 0x0800,
141 SA_FLAG_COMP_UNSUPP = 0x1000,
142 SA_FLAG_TAPE_FROZEN = 0x2000
143} sa_flags;
144
145typedef enum {
146 SA_MODE_REWIND = 0x00,
147 SA_MODE_NOREWIND = 0x01,
148 SA_MODE_OFFLINE = 0x02
149} sa_mode;
150
151typedef enum {
152 SA_PARAM_NONE = 0x00,
153 SA_PARAM_BLOCKSIZE = 0x01,
154 SA_PARAM_DENSITY = 0x02,
155 SA_PARAM_COMPRESSION = 0x04,
156 SA_PARAM_BUFF_MODE = 0x08,
157 SA_PARAM_NUMBLOCKS = 0x10,
158 SA_PARAM_WP = 0x20,
159 SA_PARAM_SPEED = 0x40,
160 SA_PARAM_ALL = 0x7f
161} sa_params;
162
163typedef enum {
164 SA_QUIRK_NONE = 0x00,
165 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */
166 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */
167 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */
168 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */
169 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */
170 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */
171 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */
172 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */
173} sa_quirks;
174
175/* units are bits 4-7, 16-21 (1024 units) */
176#define SAUNIT(DEV) \
177 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16))
178
179#define SAMODE(z) ((minor(z) & 0x3))
180#define SADENSITY(z) (((minor(z) >> 2) & 0x3))
181#define SA_IS_CTRL(z) (minor(z) & (1 << 29))
182
183#define SA_NOT_CTLDEV 0
184#define SA_CTLDEV 1
185
186#define SA_ATYPE_R 0
187#define SA_ATYPE_NR 1
188#define SA_ATYPE_ER 2
189
190#define SAMINOR(ctl, unit, mode, access) \
191 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \
192 (mode << 0x2) | (access & 0x3))
193
194#define SA_NUM_MODES 4
195struct sa_devs {
196 dev_t ctl_dev;
197 struct sa_mode_devs {
198 dev_t r_dev;
199 dev_t nr_dev;
200 dev_t er_dev;
201 } mode_devs[SA_NUM_MODES];
202 dev_t r_dev;
203 dev_t nr_dev;
204 dev_t er_dev;
205};
206
207struct sa_softc {
208 sa_state state;
209 sa_flags flags;
210 sa_quirks quirks;
211 struct buf_queue_head buf_queue;
212 int queue_count;
213 struct devstat device_stats;
214 struct sa_devs devs;
215 int blk_gran;
216 int blk_mask;
217 int blk_shift;
218 u_int32_t max_blk;
219 u_int32_t min_blk;
220 u_int32_t comp_algorithm;
221 u_int32_t saved_comp_algorithm;
222 u_int32_t media_blksize;
223 u_int32_t last_media_blksize;
224 u_int32_t media_numblks;
225 u_int8_t media_density;
226 u_int8_t speed;
227 u_int8_t scsi_rev;
228 u_int8_t dsreg; /* mtio mt_dsreg, redux */
229 int buffer_mode;
230 int filemarks;
231 union ccb saved_ccb;
232 int last_resid_was_io;
233
234 /*
235 * Relative to BOT Location.
236 */
237 daddr_t fileno;
238 daddr_t blkno;
239
240 /*
241 * Latched Error Info
242 */
243 struct {
244 struct scsi_sense_data _last_io_sense;
245 u_int32_t _last_io_resid;
246 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
247 struct scsi_sense_data _last_ctl_sense;
248 u_int32_t _last_ctl_resid;
249 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
250#define last_io_sense errinfo._last_io_sense
251#define last_io_resid errinfo._last_io_resid
252#define last_io_cdb errinfo._last_io_cdb
253#define last_ctl_sense errinfo._last_ctl_sense
254#define last_ctl_resid errinfo._last_ctl_resid
255#define last_ctl_cdb errinfo._last_ctl_cdb
256 } errinfo;
257 /*
258 * Misc other flags/state
259 */
260 u_int32_t
261 : 31,
262 ctrl_mode : 1; /* control device open */
263};
264
265struct sa_quirk_entry {
266 struct scsi_inquiry_pattern inq_pat; /* matching pattern */
267 sa_quirks quirks; /* specific quirk type */
268 u_int32_t prefblk; /* preferred blocksize when in fixed mode */
269};
270
271static struct sa_quirk_entry sa_quirk_table[] =
272{
273 {
274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream",
275 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD |
276 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768
277 },
278 {
279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
280 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0
281 },
282 {
283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
284 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0
285 },
286 {
287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
288 "Python*", "*"}, SA_QUIRK_NODREAD, 0
289 },
290 {
291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
292 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
293 },
294 {
295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
296 "VIPER 2525 25462", "-011"},
297 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0
298 },
299 {
300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
301 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
302 },
303#if 0
304 {
305 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
306 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0,
307 },
308#endif
309 {
310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
311 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
312 },
313 {
314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
315 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
316 },
317 {
318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
319 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
320 },
321 {
322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
323 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
324 },
325 {
326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
327 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
328 },
329 {
330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
331 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
332 },
333 { /* jreynold@primenet.com */
334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
335 "STT8000N*", "*"}, SA_QUIRK_1FM, 0
336 },
337 { /* mike@sentex.net */
338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
339 "STT20000*", "*"}, SA_QUIRK_1FM, 0
340 },
341 {
342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
343 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
344 },
345 {
346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
347 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
348 },
349 {
350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
351 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
352 },
353 {
354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
355 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
356 },
357 {
358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
359 " SLR*", "*"}, SA_QUIRK_1FM, 0
360 },
361 {
362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
363 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
364 },
365 {
366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
367 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
368 }
369};
370
371static d_open_t saopen;
372static d_close_t saclose;
373static d_strategy_t sastrategy;
374static d_ioctl_t saioctl;
375static periph_init_t sainit;
376static periph_ctor_t saregister;
377static periph_oninv_t saoninvalidate;
378static periph_dtor_t sacleanup;
379static periph_start_t sastart;
380static void saasync(void *callback_arg, u_int32_t code,
381 struct cam_path *path, void *arg);
382static void sadone(struct cam_periph *periph,
383 union ccb *start_ccb);
384static int saerror(union ccb *ccb, u_int32_t cam_flags,
385 u_int32_t sense_flags);
386static int samarkswanted(struct cam_periph *);
387static int sacheckeod(struct cam_periph *periph);
388static int sagetparams(struct cam_periph *periph,
389 sa_params params_to_get,
390 u_int32_t *blocksize, u_int8_t *density,
391 u_int32_t *numblocks, int *buff_mode,
392 u_int8_t *write_protect, u_int8_t *speed,
393 int *comp_supported, int *comp_enabled,
394 u_int32_t *comp_algorithm,
395 sa_comp_t *comp_page);
396static int sasetparams(struct cam_periph *periph,
397 sa_params params_to_set,
398 u_int32_t blocksize, u_int8_t density,
399 u_int32_t comp_algorithm,
400 u_int32_t sense_flags);
401static void saprevent(struct cam_periph *periph, int action);
402static int sarewind(struct cam_periph *periph);
403static int saspace(struct cam_periph *periph, int count,
404 scsi_space_code code);
405static int samount(struct cam_periph *, int, dev_t);
406static int saretension(struct cam_periph *periph);
407static int sareservereleaseunit(struct cam_periph *periph,
408 int reserve);
409static int saloadunload(struct cam_periph *periph, int load);
410static int saerase(struct cam_periph *periph, int longerase);
411static int sawritefilemarks(struct cam_periph *periph,
412 int nmarks, int setmarks);
413static int sardpos(struct cam_periph *periph, int, u_int32_t *);
414static int sasetpos(struct cam_periph *periph, int, u_int32_t *);
415
416
417static struct periph_driver sadriver =
418{
419 sainit, "sa",
420 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
421};
422
423DATA_SET(periphdriver_set, sadriver);
424
425/* For 2.2-stable support */
426#ifndef D_TAPE
427#define D_TAPE 0
428#endif
429
430#define SA_CDEV_MAJOR 14
431
432static struct cdevsw sa_cdevsw = {
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433 /* name */ "sa",
434 /* maj */ SA_CDEV_MAJOR,
435 /* flags */ D_TAPE,
436 /* port */ NULL,
437 /* autoq */ 0,
438
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439 /* open */ saopen,
440 /* close */ saclose,
441 /* read */ physread,
442 /* write */ physwrite,
443 /* ioctl */ saioctl,
444 /* poll */ nopoll,
445 /* mmap */ nommap,
446 /* strategy */ sastrategy,
984263bc 447 /* dump */ nodump,
fabb8ceb 448 /* psize */ nopsize
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449};
450
451static struct extend_array *saperiphs;
452
453static int
41c20dac 454saopen(dev_t dev, int flags, int fmt, struct thread *td)
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455{
456 struct cam_periph *periph;
457 struct sa_softc *softc;
458 int unit;
459 int mode;
460 int density;
461 int error;
462 int s;
463
464 unit = SAUNIT(dev);
465 mode = SAMODE(dev);
466 density = SADENSITY(dev);
467
468 s = splsoftcam();
469 periph = cam_extend_get(saperiphs, unit);
470 if (periph == NULL) {
471 (void) splx(s);
472 return (ENXIO);
473 }
474 softc = (struct sa_softc *)periph->softc;
377d4740 475 if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
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476 splx(s);
477 return (error);
478 }
479 splx(s);
480
481 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
482 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
483
484 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
485 cam_periph_unlock(periph);
486 return (ENXIO);
487 }
488 if (SA_IS_CTRL(dev)) {
489 softc->ctrl_mode = 1;
490 cam_periph_unlock(periph);
491 return (0);
492 }
493
494
495 if (softc->flags & SA_FLAG_OPEN) {
496 error = EBUSY;
497 } else if (softc->flags & SA_FLAG_INVALID) {
498 error = ENXIO;
499 } else {
500 /*
501 * The function samount ensures media is loaded and ready.
502 * It also does a device RESERVE if the tape isn't yet mounted.
503 */
504 error = samount(periph, flags, dev);
505 }
506
507 if (error) {
508 cam_periph_release(periph);
509 } else {
510 saprevent(periph, PR_PREVENT);
511 softc->flags |= SA_FLAG_OPEN;
512 }
513 cam_periph_unlock(periph);
514 return (error);
515}
516
517static int
41c20dac 518saclose(dev_t dev, int flag, int fmt, struct thread *td)
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519{
520 struct cam_periph *periph;
521 struct sa_softc *softc;
522 int unit, mode, error, writing, tmp;
523 int closedbits = SA_FLAG_OPEN;
524
525 unit = SAUNIT(dev);
526 mode = SAMODE(dev);
527 periph = cam_extend_get(saperiphs, unit);
528 if (periph == NULL)
529 return (ENXIO);
530
531 softc = (struct sa_softc *)periph->softc;
532
533 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
534 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
535
536
377d4740 537 if ((error = cam_periph_lock(periph, 0)) != 0) {
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538 return (error);
539 }
540
541 if (SA_IS_CTRL(dev)) {
542 softc->ctrl_mode = 0;
543 cam_periph_release(periph);
544 cam_periph_unlock(periph);
545 return (0);
546 }
547
548 /*
549 * Were we writing the tape?
550 */
551 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0;
552
553 /*
554 * See whether or not we need to write filemarks. If this
555 * fails, we probably have to assume we've lost tape
556 * position.
557 */
558 error = sacheckeod(periph);
559 if (error) {
560 xpt_print_path(periph->path);
561 printf("failed to write terminating filemark(s)\n");
562 softc->flags |= SA_FLAG_TAPE_FROZEN;
563 }
564
565 /*
566 * Whatever we end up doing, allow users to eject tapes from here on.
567 */
568 saprevent(periph, PR_ALLOW);
569
570 /*
571 * Decide how to end...
572 */
573 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
574 closedbits |= SA_FLAG_TAPE_FROZEN;
575 } else switch (mode) {
576 case SA_MODE_OFFLINE:
577 /*
578 * An 'offline' close is an unconditional release of
579 * frozen && mount conditions, irrespective of whether
580 * these operations succeeded. The reason for this is
581 * to allow at least some kind of programmatic way
582 * around our state getting all fouled up. If somebody
583 * issues an 'offline' command, that will be allowed
584 * to clear state.
585 */
586 (void) sarewind(periph);
587 (void) saloadunload(periph, FALSE);
588 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN;
589 break;
590 case SA_MODE_REWIND:
591 /*
592 * If the rewind fails, return an error- if anyone cares,
593 * but not overwriting any previous error.
594 *
595 * We don't clear the notion of mounted here, but we do
596 * clear the notion of frozen if we successfully rewound.
597 */
598 tmp = sarewind(periph);
599 if (tmp) {
600 if (error != 0)
601 error = tmp;
602 } else {
603 closedbits |= SA_FLAG_TAPE_FROZEN;
604 }
605 break;
606 case SA_MODE_NOREWIND:
607 /*
608 * If we're not rewinding/unloading the tape, find out
609 * whether we need to back up over one of two filemarks
610 * we wrote (if we wrote two filemarks) so that appends
611 * from this point on will be sane.
612 */
613 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) {
614 tmp = saspace(periph, -1, SS_FILEMARKS);
615 if (tmp) {
616 xpt_print_path(periph->path);
617 printf("unable to backspace over one of double"
618 " filemarks at end of tape\n");
619 xpt_print_path(periph->path);
620 printf("it is possible that this device"
621 " needs a SA_QUIRK_1FM quirk set for it\n");
622 softc->flags |= SA_FLAG_TAPE_FROZEN;
623 }
624 }
625 break;
626 default:
627 xpt_print_path(periph->path);
628 panic("unknown mode 0x%x in saclose\n", mode);
629 /* NOTREACHED */
630 break;
631 }
632
633 /*
634 * We wish to note here that there are no more filemarks to be written.
635 */
636 softc->filemarks = 0;
637 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
638
639 /*
640 * And we are no longer open for business.
641 */
642 softc->flags &= ~closedbits;
643
644 /*
645 * Inform users if tape state if frozen....
646 */
647 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
648 xpt_print_path(periph->path);
649 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM "
650 "command to clear this state.\n");
651 }
652
653 /* release the device if it is no longer mounted */
654 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0)
655 sareservereleaseunit(periph, FALSE);
656
657 cam_periph_unlock(periph);
658 cam_periph_release(periph);
659
660 return (error);
661}
662
663/*
664 * Actually translate the requested transfer into one the physical driver
665 * can understand. The transfer is described by a buf and will include
666 * only one physical transfer.
667 */
668static void
669sastrategy(struct buf *bp)
670{
671 struct cam_periph *periph;
672 struct sa_softc *softc;
673 u_int unit;
674 int s;
675
676 if (SA_IS_CTRL(bp->b_dev)) {
677 bp->b_error = EINVAL;
678 goto bad;
679 }
680 unit = SAUNIT(bp->b_dev);
681 periph = cam_extend_get(saperiphs, unit);
682 if (periph == NULL) {
683 bp->b_error = ENXIO;
684 goto bad;
685 }
686 softc = (struct sa_softc *)periph->softc;
687
688 s = splsoftcam();
689
690 if (softc->flags & SA_FLAG_INVALID) {
691 splx(s);
692 bp->b_error = ENXIO;
693 goto bad;
694 }
695
696 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
697 splx(s);
698 bp->b_error = EPERM;
699 goto bad;
700 }
701
702 splx(s);
703
704 /*
705 * If it's a null transfer, return immediatly
706 */
707 if (bp->b_bcount == 0)
708 goto done;
709
710 /* valid request? */
711 if (softc->flags & SA_FLAG_FIXED) {
712 /*
713 * Fixed block device. The byte count must
714 * be a multiple of our block size.
715 */
716 if (((softc->blk_mask != ~0) &&
717 ((bp->b_bcount & softc->blk_mask) != 0)) ||
718 ((softc->blk_mask == ~0) &&
719 ((bp->b_bcount % softc->min_blk) != 0))) {
720 xpt_print_path(periph->path);
721 printf("Invalid request. Fixed block device "
722 "requests must be a multiple "
723 "of %d bytes\n", softc->media_blksize);
724 bp->b_error = EINVAL;
725 goto bad;
726 }
727 } else if ((bp->b_bcount > softc->max_blk) ||
728 (bp->b_bcount < softc->min_blk) ||
729 (bp->b_bcount & softc->blk_mask) != 0) {
730
731 xpt_print_path(periph->path);
732 printf("Invalid request. Variable block device "
733 "requests must be ");
734 if (softc->blk_mask != 0) {
735 printf("a multiple of %d ", (0x1 << softc->blk_gran));
736 }
737 printf("between %d and %d bytes\n", softc->min_blk,
738 softc->max_blk);
739 bp->b_error = EINVAL;
740 goto bad;
741 }
742
743 /*
744 * Mask interrupts so that the device cannot be invalidated until
745 * after we are in the queue. Otherwise, we might not properly
746 * clean up one of the buffers.
747 */
748 s = splbio();
749
750 /*
751 * Place it at the end of the queue.
752 */
753 bufq_insert_tail(&softc->buf_queue, bp);
754
755 softc->queue_count++;
756 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d "
757 "%s byte %s queue count now %d\n", (int) bp->b_bcount,
758 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
759 (bp->b_flags & B_READ)? "read" : "write", softc->queue_count));
760
761 splx(s);
762
763 /*
764 * Schedule ourselves for performing the work.
765 */
766 xpt_schedule(periph, 1);
767
768 return;
769bad:
770 bp->b_flags |= B_ERROR;
771done:
772
773 /*
774 * Correctly set the buf to indicate a completed xfer
775 */
776 bp->b_resid = bp->b_bcount;
777 biodone(bp);
778}
779
780static int
41c20dac 781saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
984263bc
MD
782{
783 struct cam_periph *periph;
784 struct sa_softc *softc;
785 scsi_space_code spaceop;
786 int didlockperiph = 0;
787 int s;
788 int unit;
789 int mode;
790 int density;
791 int error = 0;
792
793 unit = SAUNIT(dev);
794 mode = SAMODE(dev);
795 density = SADENSITY(dev);
796 error = 0; /* shut up gcc */
797 spaceop = 0; /* shut up gcc */
798
799 periph = cam_extend_get(saperiphs, unit);
800 if (periph == NULL)
801 return (ENXIO);
802
803 softc = (struct sa_softc *)periph->softc;
804
805 /*
806 * Check for control mode accesses. We allow MTIOCGET and
807 * MTIOCERRSTAT (but need to be the only one open in order
808 * to clear latched status), and MTSETBSIZE, MTSETDNSTY
809 * and MTCOMP (but need to be the only one accessing this
810 * device to run those).
811 */
812
813 if (SA_IS_CTRL(dev)) {
814 switch (cmd) {
815 case MTIOCGETEOTMODEL:
816 case MTIOCGET:
817 break;
818 case MTIOCERRSTAT:
819 /*
820 * If the periph isn't already locked, lock it
821 * so our MTIOCERRSTAT can reset latched error stats.
822 *
823 * If the periph is already locked, skip it because
824 * we're just getting status and it'll be up to the
825 * other thread that has this device open to do
826 * an MTIOCERRSTAT that would clear latched status.
827 */
828 s = splsoftcam();
829 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
377d4740 830 error = cam_periph_lock(periph, PCATCH);
984263bc
MD
831 if (error != 0) {
832 splx(s);
833 return (error);
834 }
835 didlockperiph = 1;
836 }
837 break;
838
839 case MTIOCSETEOTMODEL:
840 case MTSETBSIZ:
841 case MTSETDNSTY:
842 case MTCOMP:
843 /*
844 * We need to acquire the peripheral here rather
845 * than at open time because we are sharing writable
846 * access to data structures.
847 */
848 s = splsoftcam();
377d4740 849 error = cam_periph_lock(periph, PCATCH);
984263bc
MD
850 if (error != 0) {
851 splx(s);
852 return (error);
853 }
854 didlockperiph = 1;
855 break;
856
857 default:
858 return (EINVAL);
859 }
860 }
861
862 /*
863 * Find the device that the user is talking about
864 */
865 switch (cmd) {
866 case MTIOCGET:
867 {
868 struct mtget *g = (struct mtget *)arg;
869
870 /*
871 * If this isn't the control mode device, actually go out
872 * and ask the drive again what it's set to.
873 */
874 if (!SA_IS_CTRL(dev)) {
875 u_int8_t write_protect;
876 int comp_enabled, comp_supported;
877 error = sagetparams(periph, SA_PARAM_ALL,
878 &softc->media_blksize, &softc->media_density,
879 &softc->media_numblks, &softc->buffer_mode,
880 &write_protect, &softc->speed, &comp_supported,
881 &comp_enabled, &softc->comp_algorithm, NULL);
882 if (error)
883 break;
884 if (write_protect)
885 softc->flags |= SA_FLAG_TAPE_WP;
886 else
887 softc->flags &= ~SA_FLAG_TAPE_WP;
888 softc->flags &= ~(SA_FLAG_COMP_SUPP|
889 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP);
890 if (comp_supported) {
891 if (softc->saved_comp_algorithm == 0)
892 softc->saved_comp_algorithm =
893 softc->comp_algorithm;
894 softc->flags |= SA_FLAG_COMP_SUPP;
895 if (comp_enabled)
896 softc->flags |= SA_FLAG_COMP_ENABLED;
897 } else
898 softc->flags |= SA_FLAG_COMP_UNSUPP;
899 }
900 bzero(g, sizeof(struct mtget));
901 g->mt_type = MT_ISAR;
902 if (softc->flags & SA_FLAG_COMP_UNSUPP) {
903 g->mt_comp = MT_COMP_UNSUPP;
904 g->mt_comp0 = MT_COMP_UNSUPP;
905 g->mt_comp1 = MT_COMP_UNSUPP;
906 g->mt_comp2 = MT_COMP_UNSUPP;
907 g->mt_comp3 = MT_COMP_UNSUPP;
908 } else {
909 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
910 g->mt_comp = MT_COMP_DISABLED;
911 } else {
912 g->mt_comp = softc->comp_algorithm;
913 }
914 g->mt_comp0 = softc->comp_algorithm;
915 g->mt_comp1 = softc->comp_algorithm;
916 g->mt_comp2 = softc->comp_algorithm;
917 g->mt_comp3 = softc->comp_algorithm;
918 }
919 g->mt_density = softc->media_density;
920 g->mt_density0 = softc->media_density;
921 g->mt_density1 = softc->media_density;
922 g->mt_density2 = softc->media_density;
923 g->mt_density3 = softc->media_density;
924 g->mt_blksiz = softc->media_blksize;
925 g->mt_blksiz0 = softc->media_blksize;
926 g->mt_blksiz1 = softc->media_blksize;
927 g->mt_blksiz2 = softc->media_blksize;
928 g->mt_blksiz3 = softc->media_blksize;
929 g->mt_fileno = softc->fileno;
930 g->mt_blkno = softc->blkno;
931 g->mt_dsreg = (short) softc->dsreg;
932 /*
933 * Yes, we know that this is likely to overflow
934 */
935 if (softc->last_resid_was_io) {
936 if ((g->mt_resid = (short) softc->last_io_resid) != 0) {
937 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
938 softc->last_io_resid = 0;
939 }
940 }
941 } else {
942 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) {
943 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
944 softc->last_ctl_resid = 0;
945 }
946 }
947 }
948 error = 0;
949 break;
950 }
951 case MTIOCERRSTAT:
952 {
953 struct scsi_tape_errors *sep =
954 &((union mterrstat *)arg)->scsi_errstat;
955
956 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
957 ("saioctl: MTIOCERRSTAT\n"));
958
959 bzero(sep, sizeof(*sep));
960 sep->io_resid = softc->last_io_resid;
961 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
962 sizeof (sep->io_sense));
963 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
964 sizeof (sep->io_cdb));
965 sep->ctl_resid = softc->last_ctl_resid;
966 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
967 sizeof (sep->ctl_sense));
968 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
969 sizeof (sep->ctl_cdb));
970
971 if (SA_IS_CTRL(dev) == 0 || didlockperiph)
972 bzero((caddr_t) &softc->errinfo,
973 sizeof (softc->errinfo));
974 error = 0;
975 break;
976 }
977 case MTIOCTOP:
978 {
979 struct mtop *mt;
980 int count;
981
982 mt = (struct mtop *)arg;
983
984 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
985 ("saioctl: op=0x%x count=0x%x\n",
986 mt->mt_op, mt->mt_count));
987
988 count = mt->mt_count;
989 switch (mt->mt_op) {
990 case MTWEOF: /* write an end-of-file marker */
991 /*
992 * We don't need to clear the SA_FLAG_TAPE_WRITTEN
993 * flag because by keeping track of filemarks
994 * we have last written we know ehether or not
995 * we need to write more when we close the device.
996 */
997 error = sawritefilemarks(periph, count, FALSE);
998 break;
999 case MTWSS: /* write a setmark */
1000 error = sawritefilemarks(periph, count, TRUE);
1001 break;
1002 case MTBSR: /* backward space record */
1003 case MTFSR: /* forward space record */
1004 case MTBSF: /* backward space file */
1005 case MTFSF: /* forward space file */
1006 case MTBSS: /* backward space setmark */
1007 case MTFSS: /* forward space setmark */
1008 case MTEOD: /* space to end of recorded medium */
1009 {
1010 int nmarks;
1011
1012 spaceop = SS_FILEMARKS;
1013 nmarks = softc->filemarks;
1014 error = sacheckeod(periph);
1015 if (error) {
1016 xpt_print_path(periph->path);
1017 printf("EOD check prior to spacing failed\n");
1018 softc->flags |= SA_FLAG_EIO_PENDING;
1019 break;
1020 }
1021 nmarks -= softc->filemarks;
1022 switch(mt->mt_op) {
1023 case MTBSR:
1024 count = -count;
1025 /* FALLTHROUGH */
1026 case MTFSR:
1027 spaceop = SS_BLOCKS;
1028 break;
1029 case MTBSF:
1030 count = -count;
1031 /* FALLTHROUGH */
1032 case MTFSF:
1033 break;
1034 case MTBSS:
1035 count = -count;
1036 /* FALLTHROUGH */
1037 case MTFSS:
1038 spaceop = SS_SETMARKS;
1039 break;
1040 case MTEOD:
1041 spaceop = SS_EOD;
1042 count = 0;
1043 nmarks = 0;
1044 break;
1045 default:
1046 error = EINVAL;
1047 break;
1048 }
1049 if (error)
1050 break;
1051
1052 nmarks = softc->filemarks;
1053 /*
1054 * XXX: Why are we checking again?
1055 */
1056 error = sacheckeod(periph);
1057 if (error)
1058 break;
1059 nmarks -= softc->filemarks;
1060 error = saspace(periph, count - nmarks, spaceop);
1061 /*
1062 * At this point, clear that we've written the tape
1063 * and that we've written any filemarks. We really
1064 * don't know what the applications wishes to do next-
1065 * the sacheckeod's will make sure we terminated the
1066 * tape correctly if we'd been writing, but the next
1067 * action the user application takes will set again
1068 * whether we need to write filemarks.
1069 */
1070 softc->flags &=
1071 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1072 softc->filemarks = 0;
1073 break;
1074 }
1075 case MTREW: /* rewind */
1076 (void) sacheckeod(periph);
1077 error = sarewind(periph);
1078 /* see above */
1079 softc->flags &=
1080 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1081 softc->flags &= ~SA_FLAG_ERR_PENDING;
1082 softc->filemarks = 0;
1083 break;
1084 case MTERASE: /* erase */
1085 error = saerase(periph, count);
1086 softc->flags &=
1087 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1088 softc->flags &= ~SA_FLAG_ERR_PENDING;
1089 break;
1090 case MTRETENS: /* re-tension tape */
1091 error = saretension(periph);
1092 softc->flags &=
1093 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1094 softc->flags &= ~SA_FLAG_ERR_PENDING;
1095 break;
1096 case MTOFFL: /* rewind and put the drive offline */
1097
1098 (void) sacheckeod(periph);
1099 /* see above */
1100 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
1101 softc->filemarks = 0;
1102
1103 error = sarewind(periph);
1104 /* clear the frozen flag anyway */
1105 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1106
1107 /*
1108 * Be sure to allow media removal before ejecting.
1109 */
1110
1111 saprevent(periph, PR_ALLOW);
1112 if (error == 0) {
1113 error = saloadunload(periph, FALSE);
1114 if (error == 0) {
1115 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1116 }
1117 }
1118 break;
1119
1120 case MTNOP: /* no operation, sets status only */
1121 case MTCACHE: /* enable controller cache */
1122 case MTNOCACHE: /* disable controller cache */
1123 error = 0;
1124 break;
1125
1126 case MTSETBSIZ: /* Set block size for device */
1127
1128 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count,
1129 0, 0, 0);
1130 if (error == 0) {
1131 softc->last_media_blksize =
1132 softc->media_blksize;
1133 softc->media_blksize = count;
1134 if (count) {
1135 softc->flags |= SA_FLAG_FIXED;
1136 if (powerof2(count)) {
1137 softc->blk_shift =
1138 ffs(count) - 1;
1139 softc->blk_mask = count - 1;
1140 } else {
1141 softc->blk_mask = ~0;
1142 softc->blk_shift = 0;
1143 }
1144 /*
1145 * Make the user's desire 'persistent'.
1146 */
1147 softc->quirks &= ~SA_QUIRK_VARIABLE;
1148 softc->quirks |= SA_QUIRK_FIXED;
1149 } else {
1150 softc->flags &= ~SA_FLAG_FIXED;
1151 if (softc->max_blk == 0) {
1152 softc->max_blk = ~0;
1153 }
1154 softc->blk_shift = 0;
1155 if (softc->blk_gran != 0) {
1156 softc->blk_mask =
1157 softc->blk_gran - 1;
1158 } else {
1159 softc->blk_mask = 0;
1160 }
1161 /*
1162 * Make the user's desire 'persistent'.
1163 */
1164 softc->quirks |= SA_QUIRK_VARIABLE;
1165 softc->quirks &= ~SA_QUIRK_FIXED;
1166 }
1167 }
1168 break;
1169 case MTSETDNSTY: /* Set density for device and mode */
1170 if (count > UCHAR_MAX) {
1171 error = EINVAL;
1172 break;
1173 } else {
1174 error = sasetparams(periph, SA_PARAM_DENSITY,
1175 0, count, 0, 0);
1176 }
1177 break;
1178 case MTCOMP: /* enable compression */
1179 /*
1180 * Some devices don't support compression, and
1181 * don't like it if you ask them for the
1182 * compression page.
1183 */
1184 if ((softc->quirks & SA_QUIRK_NOCOMP) ||
1185 (softc->flags & SA_FLAG_COMP_UNSUPP)) {
1186 error = ENODEV;
1187 break;
1188 }
1189 error = sasetparams(periph, SA_PARAM_COMPRESSION,
1190 0, 0, count, SF_NO_PRINT);
1191 break;
1192 default:
1193 error = EINVAL;
1194 }
1195 break;
1196 }
1197 case MTIOCIEOT:
1198 case MTIOCEEOT:
1199 error = 0;
1200 break;
1201 case MTIOCRDSPOS:
1202 error = sardpos(periph, 0, (u_int32_t *) arg);
1203 break;
1204 case MTIOCRDHPOS:
1205 error = sardpos(periph, 1, (u_int32_t *) arg);
1206 break;
1207 case MTIOCSLOCATE:
1208 error = sasetpos(periph, 0, (u_int32_t *) arg);
1209 break;
1210 case MTIOCHLOCATE:
1211 error = sasetpos(periph, 1, (u_int32_t *) arg);
1212 break;
1213 case MTIOCGETEOTMODEL:
1214 error = 0;
1215 if (softc->quirks & SA_QUIRK_1FM)
1216 mode = 1;
1217 else
1218 mode = 2;
1219 *((u_int32_t *) arg) = mode;
1220 break;
1221 case MTIOCSETEOTMODEL:
1222 error = 0;
1223 switch (*((u_int32_t *) arg)) {
1224 case 1:
1225 softc->quirks &= ~SA_QUIRK_2FM;
1226 softc->quirks |= SA_QUIRK_1FM;
1227 break;
1228 case 2:
1229 softc->quirks &= ~SA_QUIRK_1FM;
1230 softc->quirks |= SA_QUIRK_2FM;
1231 break;
1232 default:
1233 error = EINVAL;
1234 break;
1235 }
1236 break;
1237 default:
1238 error = cam_periph_ioctl(periph, cmd, arg, saerror);
1239 break;
1240 }
1241
1242 /*
1243 * Check to see if we cleared a frozen state
1244 */
1245 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) {
1246 switch(cmd) {
1247 case MTIOCRDSPOS:
1248 case MTIOCRDHPOS:
1249 case MTIOCSLOCATE:
1250 case MTIOCHLOCATE:
1251 softc->fileno = (daddr_t) -1;
1252 softc->blkno = (daddr_t) -1;
1253 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1254 xpt_print_path(periph->path);
1255 printf("tape state now unfrozen.\n");
1256 break;
1257 default:
1258 break;
1259 }
1260 }
1261 if (didlockperiph) {
1262 cam_periph_unlock(periph);
1263 }
1264 return (error);
1265}
1266
1267static void
1268sainit(void)
1269{
1270 cam_status status;
1271 struct cam_path *path;
1272
1273 /*
1274 * Create our extend array for storing the devices we attach to.
1275 */
1276 saperiphs = cam_extend_new();
1277 if (saperiphs == NULL) {
1278 printf("sa: Failed to alloc extend array!\n");
1279 return;
1280 }
1281
1282 /*
1283 * Install a global async callback.
1284 */
1285 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1286 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1287
1288 if (status == CAM_REQ_CMP) {
1289 /* Register the async callbacks of interrest */
1290 struct ccb_setasync csa; /*
1291 * This is an immediate CCB,
1292 * so using the stack is OK
1293 */
1294 xpt_setup_ccb(&csa.ccb_h, path, 5);
1295 csa.ccb_h.func_code = XPT_SASYNC_CB;
1296 csa.event_enable = AC_FOUND_DEVICE;
1297 csa.callback = saasync;
1298 csa.callback_arg = NULL;
1299 xpt_action((union ccb *)&csa);
1300 status = csa.ccb_h.status;
1301 xpt_free_path(path);
1302 }
1303
1304 if (status != CAM_REQ_CMP) {
1305 printf("sa: Failed to attach master async callback "
1306 "due to status 0x%x!\n", status);
1307 }
1308}
1309
1310static void
1311saoninvalidate(struct cam_periph *periph)
1312{
1313 struct sa_softc *softc;
1314 struct buf *q_bp;
1315 struct ccb_setasync csa;
1316 int s;
1317
1318 softc = (struct sa_softc *)periph->softc;
1319
1320 /*
1321 * De-register any async callbacks.
1322 */
1323 xpt_setup_ccb(&csa.ccb_h, periph->path,
1324 /* priority */ 5);
1325 csa.ccb_h.func_code = XPT_SASYNC_CB;
1326 csa.event_enable = 0;
1327 csa.callback = saasync;
1328 csa.callback_arg = periph;
1329 xpt_action((union ccb *)&csa);
1330
1331 softc->flags |= SA_FLAG_INVALID;
1332
1333 /*
1334 * Although the oninvalidate() routines are always called at
1335 * splsoftcam, we need to be at splbio() here to keep the buffer
1336 * queue from being modified while we traverse it.
1337 */
1338 s = splbio();
1339
1340 /*
1341 * Return all queued I/O with ENXIO.
1342 * XXX Handle any transactions queued to the card
1343 * with XPT_ABORT_CCB.
1344 */
1345 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1346 bufq_remove(&softc->buf_queue, q_bp);
1347 q_bp->b_resid = q_bp->b_bcount;
1348 q_bp->b_error = ENXIO;
1349 q_bp->b_flags |= B_ERROR;
1350 biodone(q_bp);
1351 }
1352 softc->queue_count = 0;
1353 splx(s);
1354
1355 xpt_print_path(periph->path);
1356 printf("lost device\n");
1357
1358}
1359
1360static void
1361sacleanup(struct cam_periph *periph)
1362{
1363 struct sa_softc *softc;
1364 int i;
1365
1366 softc = (struct sa_softc *)periph->softc;
1367
1368 devstat_remove_entry(&softc->device_stats);
1369
1370 destroy_dev(softc->devs.ctl_dev);
1371 destroy_dev(softc->devs.r_dev);
1372 destroy_dev(softc->devs.nr_dev);
1373 destroy_dev(softc->devs.er_dev);
1374
1375 for (i = 0; i < SA_NUM_MODES; i++) {
1376 destroy_dev(softc->devs.mode_devs[i].r_dev);
1377 destroy_dev(softc->devs.mode_devs[i].nr_dev);
1378 destroy_dev(softc->devs.mode_devs[i].er_dev);
1379 }
1380
1381 cam_extend_release(saperiphs, periph->unit_number);
1382 xpt_print_path(periph->path);
1383 printf("removing device entry\n");
1384 free(softc, M_DEVBUF);
1385}
1386
1387static void
1388saasync(void *callback_arg, u_int32_t code,
1389 struct cam_path *path, void *arg)
1390{
1391 struct cam_periph *periph;
1392
1393 periph = (struct cam_periph *)callback_arg;
1394 switch (code) {
1395 case AC_FOUND_DEVICE:
1396 {
1397 struct ccb_getdev *cgd;
1398 cam_status status;
1399
1400 cgd = (struct ccb_getdev *)arg;
1401 if (cgd == NULL)
1402 break;
1403
1404 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
1405 break;
1406
1407 /*
1408 * Allocate a peripheral instance for
1409 * this device and start the probe
1410 * process.
1411 */
1412 status = cam_periph_alloc(saregister, saoninvalidate,
1413 sacleanup, sastart,
1414 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
1415 saasync, AC_FOUND_DEVICE, cgd);
1416
1417 if (status != CAM_REQ_CMP
1418 && status != CAM_REQ_INPROG)
1419 printf("saasync: Unable to probe new device "
1420 "due to status 0x%x\n", status);
1421 break;
1422 }
1423 default:
1424 cam_periph_async(periph, code, path, arg);
1425 break;
1426 }
1427}
1428
1429static cam_status
1430saregister(struct cam_periph *periph, void *arg)
1431{
1432 struct sa_softc *softc;
1433 struct ccb_setasync csa;
1434 struct ccb_getdev *cgd;
1435 caddr_t match;
1436 int i;
1437
1438 cgd = (struct ccb_getdev *)arg;
1439 if (periph == NULL) {
1440 printf("saregister: periph was NULL!!\n");
1441 return (CAM_REQ_CMP_ERR);
1442 }
1443
1444 if (cgd == NULL) {
1445 printf("saregister: no getdev CCB, can't register device\n");
1446 return (CAM_REQ_CMP_ERR);
1447 }
1448
1449 softc = (struct sa_softc *)malloc(sizeof (*softc), M_DEVBUF, M_NOWAIT);
1450 if (softc == NULL) {
1451 printf("saregister: Unable to probe new device. "
1452 "Unable to allocate softc\n");
1453 return (CAM_REQ_CMP_ERR);
1454 }
1455
1456 bzero(softc, sizeof(*softc));
1457 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
1458 softc->state = SA_STATE_NORMAL;
1459 softc->fileno = (daddr_t) -1;
1460 softc->blkno = (daddr_t) -1;
1461
1462 bufq_init(&softc->buf_queue);
1463 periph->softc = softc;
1464 cam_extend_set(saperiphs, periph->unit_number, periph);
1465
1466 /*
1467 * See if this device has any quirks.
1468 */
1469 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1470 (caddr_t)sa_quirk_table,
1471 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
1472 sizeof(*sa_quirk_table), scsi_inquiry_match);
1473
1474 if (match != NULL) {
1475 softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
1476 softc->last_media_blksize =
1477 ((struct sa_quirk_entry *)match)->prefblk;
1478#ifdef CAMDEBUG
1479 xpt_print_path(periph->path);
1480 printf("found quirk entry %d\n", (int)
1481 (((struct sa_quirk_entry *) match) - sa_quirk_table));
1482#endif
1483 } else
1484 softc->quirks = SA_QUIRK_NONE;
1485
1486 /*
1487 * The SA driver supports a blocksize, but we don't know the
1488 * blocksize until we media is inserted. So, set a flag to
1489 * indicate that the blocksize is unavailable right now.
1490 */
1491 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0,
1492 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
1493 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE);
1494
1495 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV,
1496 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1497 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number);
1498
1499 softc->devs.r_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV,
1500 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1501 0660, "r%s%d", periph->periph_name, periph->unit_number);
1502
1503 softc->devs.nr_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV,
1504 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR,
1505 0660, "nr%s%d", periph->periph_name, periph->unit_number);
1506
1507 softc->devs.er_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV,
1508 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR,
1509 0660, "er%s%d", periph->periph_name, periph->unit_number);
1510
1511 for (i = 0; i < SA_NUM_MODES; i++) {
1512
1513 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw,
1514 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R),
1515 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d",
1516 periph->periph_name, periph->unit_number, i);
1517
1518 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw,
1519 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR),
1520 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d",
1521 periph->periph_name, periph->unit_number, i);
1522
1523
1524 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw,
1525 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER),
1526 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d",
1527 periph->periph_name, periph->unit_number, i);
1528 }
1529
1530 /*
1531 * Add an async callback so that we get
1532 * notified if this device goes away.
1533 */
1534 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5);
1535 csa.ccb_h.func_code = XPT_SASYNC_CB;
1536 csa.event_enable = AC_LOST_DEVICE;
1537 csa.callback = saasync;
1538 csa.callback_arg = periph;
1539 xpt_action((union ccb *)&csa);
1540
1541 xpt_announce_periph(periph, NULL);
1542
1543 return (CAM_REQ_CMP);
1544}
1545
1546static void
1547sastart(struct cam_periph *periph, union ccb *start_ccb)
1548{
1549 struct sa_softc *softc;
1550
1551 softc = (struct sa_softc *)periph->softc;
1552
1553 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart"));
1554
1555
1556 switch (softc->state) {
1557 case SA_STATE_NORMAL:
1558 {
1559 /* Pull a buffer from the queue and get going on it */
1560 struct buf *bp;
1561 int s;
1562
1563 /*
1564 * See if there is a buf with work for us to do..
1565 */
1566 s = splbio();
1567 bp = bufq_first(&softc->buf_queue);
1568 if (periph->immediate_priority <= periph->pinfo.priority) {
1569 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1570 ("queuing for immediate ccb\n"));
1571 Set_CCB_Type(start_ccb, SA_CCB_WAITING);
1572 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1573 periph_links.sle);
1574 periph->immediate_priority = CAM_PRIORITY_NONE;
1575 splx(s);
1576 wakeup(&periph->ccb_list);
1577 } else if (bp == NULL) {
1578 splx(s);
1579 xpt_release_ccb(start_ccb);
1580 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) {
1581 struct buf *done_bp;
1582again:
1583 softc->queue_count--;
1584 bufq_remove(&softc->buf_queue, bp);
1585 bp->b_resid = bp->b_bcount;
1586 done_bp = bp;
1587 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
1588 /*
1589 * We now just clear errors in this case
1590 * and let the residual be the notifier.
1591 */
1592 bp->b_error = 0;
1593 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
1594 /*
1595 * This can only happen if we're reading
1596 * in fixed length mode. In this case,
1597 * we dump the rest of the list the
1598 * same way.
1599 */
1600 bp->b_error = 0;
1601 if (bufq_first(&softc->buf_queue) != NULL) {
1602 biodone(done_bp);
1603 goto again;
1604 }
1605 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
1606 bp->b_error = EIO;
1607 bp->b_flags |= B_ERROR;
1608 }
1609 bp = bufq_first(&softc->buf_queue);
1610 /*
1611 * Only if we have no other buffers queued up
1612 * do we clear the pending error flag.
1613 */
1614 if (bp == NULL)
1615 softc->flags &= ~SA_FLAG_ERR_PENDING;
1616 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1617 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, "
1618 "%d more buffers queued up\n",
1619 (softc->flags & SA_FLAG_ERR_PENDING),
1620 (bp != NULL)? "not " : " ", softc->queue_count));
1621 splx(s);
1622 xpt_release_ccb(start_ccb);
1623 biodone(done_bp);
1624 } else {
1625 u_int32_t length;
1626
1627 bufq_remove(&softc->buf_queue, bp);
1628 softc->queue_count--;
1629
1630 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1631 if (softc->blk_shift != 0) {
1632 length =
1633 bp->b_bcount >> softc->blk_shift;
1634 } else if (softc->media_blksize != 0) {
1635 length =
1636 bp->b_bcount / softc->media_blksize;
1637 } else {
1638 bp->b_error = EIO;
1639 xpt_print_path(periph->path);
1640 printf("zero blocksize for "
1641 "FIXED length writes?\n");
1642 splx(s);
1643 biodone(bp);
1644 break;
1645 }
1646 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1647 ("Fixed Record Count is %d\n", length));
1648 } else {
1649 length = bp->b_bcount;
1650 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1651 ("Variable Record Count is %d\n", length));
1652 }
1653 devstat_start_transaction(&softc->device_stats);
1654 /*
1655 * Some people have theorized that we should
1656 * suppress illegal length indication if we are
1657 * running in variable block mode so that we don't
1658 * have to request sense every time our requested
1659 * block size is larger than the written block.
1660 * The residual information from the ccb allows
1661 * us to identify this situation anyway. The only
1662 * problem with this is that we will not get
1663 * information about blocks that are larger than
1664 * our read buffer unless we set the block size
1665 * in the mode page to something other than 0.
1666 *
1667 * I believe that this is a non-issue. If user apps
1668 * don't adjust their read size to match our record
1669 * size, that's just life. Anyway, the typical usage
1670 * would be to issue, e.g., 64KB reads and occasionally
1671 * have to do deal with 512 byte or 1KB intermediate
1672 * records.
1673 */
1674 softc->dsreg = (bp->b_flags & B_READ)?
1675 MTIO_DSREG_RD : MTIO_DSREG_WR;
1676 scsi_sa_read_write(&start_ccb->csio, 0, sadone,
1677 MSG_SIMPLE_Q_TAG, (bp->b_flags & B_READ) != 0,
1678 FALSE, (softc->flags & SA_FLAG_FIXED) != 0,
1679 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE,
1680 IO_TIMEOUT);
1681 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
1682 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO);
1683 start_ccb->ccb_h.ccb_bp = bp;
1684 bp = bufq_first(&softc->buf_queue);
1685 splx(s);
1686 xpt_action(start_ccb);
1687 }
1688
1689 if (bp != NULL) {
1690 /* Have more work to do, so ensure we stay scheduled */
1691 xpt_schedule(periph, 1);
1692 }
1693 break;
1694 }
1695 case SA_STATE_ABNORMAL:
1696 default:
1697 panic("state 0x%x in sastart", softc->state);
1698 break;
1699 }
1700}
1701
1702
1703static void
1704sadone(struct cam_periph *periph, union ccb *done_ccb)
1705{
1706 struct sa_softc *softc;
1707 struct ccb_scsiio *csio;
1708
1709 softc = (struct sa_softc *)periph->softc;
1710 csio = &done_ccb->csio;
1711 switch (CCB_Type(csio)) {
1712 case SA_CCB_BUFFER_IO:
1713 {
1714 struct buf *bp;
1715 int error;
1716
1717 softc->dsreg = MTIO_DSREG_REST;
1718 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1719 error = 0;
1720 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1721 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
1722 /*
1723 * A retry was scheduled, so just return.
1724 */
1725 return;
1726 }
1727 }
1728
1729 if (error == EIO) {
1730 int s;
1731 struct buf *q_bp;
1732
1733 /*
1734 * Catastrophic error. Mark the tape as frozen
1735 * (we no longer know tape position).
1736 *
1737 * Return all queued I/O with EIO, and unfreeze
1738 * our queue so that future transactions that
1739 * attempt to fix this problem can get to the
1740 * device.
1741 *
1742 */
1743
1744 s = splbio();
1745 softc->flags |= SA_FLAG_TAPE_FROZEN;
1746 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) {
1747 bufq_remove(&softc->buf_queue, q_bp);
1748 q_bp->b_resid = q_bp->b_bcount;
1749 q_bp->b_error = EIO;
1750 q_bp->b_flags |= B_ERROR;
1751 biodone(q_bp);
1752 }
1753 splx(s);
1754 }
1755 if (error != 0) {
1756 bp->b_resid = bp->b_bcount;
1757 bp->b_error = error;
1758 bp->b_flags |= B_ERROR;
1759 /*
1760 * In the error case, position is updated in saerror.
1761 */
1762 } else {
1763 bp->b_resid = csio->resid;
1764 bp->b_error = 0;
1765 if (csio->resid != 0) {
1766 bp->b_flags |= B_ERROR;
1767 }
1768 if ((bp->b_flags & B_READ) == 0) {
1769 softc->flags |= SA_FLAG_TAPE_WRITTEN;
1770 softc->filemarks = 0;
1771 }
1772 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
1773 (softc->blkno != (daddr_t) -1)) {
1774 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1775 u_int32_t l;
1776 if (softc->blk_shift != 0) {
1777 l = bp->b_bcount >>
1778 softc->blk_shift;
1779 } else {
1780 l = bp->b_bcount /
1781 softc->media_blksize;
1782 }
1783 softc->blkno += (daddr_t) l;
1784 } else {
1785 softc->blkno++;
1786 }
1787 }
1788 }
1789 /*
1790 * If we had an error (immediate or pending),
1791 * release the device queue now.
1792 */
1793 if (error || (softc->flags & SA_FLAG_ERR_PENDING))
1794 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1795#ifdef CAMDEBUG
1796 if (error || bp->b_resid) {
1797 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1798 ("error %d resid %ld count %ld\n", error,
1799 bp->b_resid, bp->b_bcount));
1800 }
1801#endif
1802 devstat_end_transaction_buf(&softc->device_stats, bp);
1803 biodone(bp);
1804 break;
1805 }
1806 case SA_CCB_WAITING:
1807 {
1808 /* Caller will release the CCB */
1809 wakeup(&done_ccb->ccb_h.cbfcnp);
1810 return;
1811 }
1812 }
1813 xpt_release_ccb(done_ccb);
1814}
1815
1816/*
1817 * Mount the tape (make sure it's ready for I/O).
1818 */
1819static int
1820samount(struct cam_periph *periph, int oflags, dev_t dev)
1821{
1822 struct sa_softc *softc;
1823 union ccb *ccb;
1824 int error;
1825
1826 /*
1827 * oflags can be checked for 'kind' of open (read-only check) - later
1828 * dev can be checked for a control-mode or compression open - later
1829 */
1830 UNUSED_PARAMETER(oflags);
1831 UNUSED_PARAMETER(dev);
1832
1833
1834 softc = (struct sa_softc *)periph->softc;
1835
1836 /*
1837 * This should determine if something has happend since the last
1838 * open/mount that would invalidate the mount. We do *not* want
1839 * to retry this command- we just want the status. But we only
1840 * do this if we're mounted already- if we're not mounted,
1841 * we don't care about the unit read state and can instead use
1842 * this opportunity to attempt to reserve the tape unit.
1843 */
1844
1845 if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
1846 ccb = cam_periph_getccb(periph, 1);
1847 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1848 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1849 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1850 &softc->device_stats);
1851 QFRLS(ccb);
1852 if (error == ENXIO) {
1853 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1854 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1855 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1856 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1857 &softc->device_stats);
1858 QFRLS(ccb);
1859 } else if (error) {
1860 /*
1861 * We don't need to freeze the tape because we
1862 * will now attempt to rewind/load it.
1863 */
1864 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1865 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) {
1866 xpt_print_path(ccb->ccb_h.path);
1867 printf("error %d on TUR in samount\n", error);
1868 }
1869 }
1870 } else {
1871 error = sareservereleaseunit(periph, TRUE);
1872 if (error) {
1873 return (error);
1874 }
1875 ccb = cam_periph_getccb(periph, 1);
1876 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1877 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1878 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1879 &softc->device_stats);
1880 QFRLS(ccb);
1881 }
1882
1883 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
1884 struct scsi_read_block_limits_data *rblim = NULL;
1885 int comp_enabled, comp_supported;
1886 u_int8_t write_protect, guessing = 0;
1887
1888 /*
1889 * Clear out old state.
1890 */
1891 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
1892 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
1893 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP);
1894 softc->filemarks = 0;
1895
1896 /*
1897 * *Very* first off, make sure we're loaded to BOT.
1898 */
1899 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
1900 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
1901 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1902 &softc->device_stats);
1903 QFRLS(ccb);
1904
1905 /*
1906 * In case this doesn't work, do a REWIND instead
1907 */
1908 if (error) {
1909 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
1910 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1911 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1912 &softc->device_stats);
1913 QFRLS(ccb);
1914 }
1915 if (error) {
1916 xpt_release_ccb(ccb);
1917 goto exit;
1918 }
1919
1920 /*
1921 * Do a dummy test read to force access to the
1922 * media so that the drive will really know what's
1923 * there. We actually don't really care what the
1924 * blocksize on tape is and don't expect to really
1925 * read a full record.
1926 */
1927 rblim = (struct scsi_read_block_limits_data *)
1928 malloc(8192, M_TEMP, M_WAITOK);
1929 if (rblim == NULL) {
1930 xpt_print_path(ccb->ccb_h.path);
1931 printf("no memory for test read\n");
1932 xpt_release_ccb(ccb);
1933 error = ENOMEM;
1934 goto exit;
1935 }
1936
1937 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
1938 scsi_sa_read_write(&ccb->csio, 0, sadone,
1939 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
1940 (void *) rblim, 8192, SSD_FULL_SIZE,
1941 IO_TIMEOUT);
1942 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1943 &softc->device_stats);
1944 QFRLS(ccb);
1945 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
1946 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1947 error = cam_periph_runccb(ccb, saerror, 0,
1948 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA,
1949 &softc->device_stats);
1950 QFRLS(ccb);
1951 if (error) {
1952 xpt_print_path(ccb->ccb_h.path);
1953 printf("unable to rewind after test read\n");
1954 xpt_release_ccb(ccb);
1955 goto exit;
1956 }
1957 }
1958
1959 /*
1960 * Next off, determine block limits.
1961 */
1962 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
1963 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
1964
1965 error = cam_periph_runccb(ccb, saerror, 0,
1966 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO,
1967 &softc->device_stats);
1968 QFRLS(ccb);
1969 xpt_release_ccb(ccb);
1970
1971 if (error != 0) {
1972 /*
1973 * If it's less than SCSI-2, READ BLOCK LIMITS is not
1974 * a MANDATORY command. Anyway- it doesn't matter-
1975 * we can proceed anyway.
1976 */
1977 softc->blk_gran = 0;
1978 softc->max_blk = ~0;
1979 softc->min_blk = 0;
1980 } else {
1981 if (softc->scsi_rev >= SCSI_REV_3) {
1982 softc->blk_gran = RBL_GRAN(rblim);
1983 } else {
1984 softc->blk_gran = 0;
1985 }
1986 /*
1987 * We take max_blk == min_blk to mean a default to
1988 * fixed mode- but note that whatever we get out of
1989 * sagetparams below will actually determine whether
1990 * we are actually *in* fixed mode.
1991 */
1992 softc->max_blk = scsi_3btoul(rblim->maximum);
1993 softc->min_blk = scsi_2btoul(rblim->minimum);
1994
1995
1996 }
1997 /*
1998 * Next, perform a mode sense to determine
1999 * current density, blocksize, compression etc.
2000 */
2001 error = sagetparams(periph, SA_PARAM_ALL,
2002 &softc->media_blksize,
2003 &softc->media_density,
2004 &softc->media_numblks,
2005 &softc->buffer_mode, &write_protect,
2006 &softc->speed, &comp_supported,
2007 &comp_enabled, &softc->comp_algorithm,
2008 NULL);
2009
2010 if (error != 0) {
2011 /*
2012 * We could work a little harder here. We could
2013 * adjust our attempts to get information. It
2014 * might be an ancient tape drive. If someone
2015 * nudges us, we'll do that.
2016 */
2017 goto exit;
2018 }
2019
2020 /*
2021 * If no quirk has determined that this is a device that is
2022 * preferred to be in fixed or variable mode, now is the time
2023 * to find out.
2024 */
2025 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
2026 guessing = 1;
2027 /*
2028 * This could be expensive to find out. Luckily we
2029 * only need to do this once. If we start out in
2030 * 'default' mode, try and set ourselves to one
2031 * of the densities that would determine a wad
2032 * of other stuff. Go from highest to lowest.
2033 */
2034 if (softc->media_density == SCSI_DEFAULT_DENSITY) {
2035 int i;
2036 static u_int8_t ctry[] = {
2037 SCSI_DENSITY_HALFINCH_PE,
2038 SCSI_DENSITY_HALFINCH_6250C,
2039 SCSI_DENSITY_HALFINCH_6250,
2040 SCSI_DENSITY_HALFINCH_1600,
2041 SCSI_DENSITY_HALFINCH_800,
2042 SCSI_DENSITY_QIC_4GB,
2043 SCSI_DENSITY_QIC_2GB,
2044 SCSI_DENSITY_QIC_525_320,
2045 SCSI_DENSITY_QIC_150,
2046 SCSI_DENSITY_QIC_120,
2047 SCSI_DENSITY_QIC_24,
2048 SCSI_DENSITY_QIC_11_9TRK,
2049 SCSI_DENSITY_QIC_11_4TRK,
2050 SCSI_DENSITY_QIC_1320,
2051 SCSI_DENSITY_QIC_3080,
2052 0
2053 };
2054 for (i = 0; ctry[i]; i++) {
2055 error = sasetparams(periph,
2056 SA_PARAM_DENSITY, 0, ctry[i],
2057 0, SF_NO_PRINT);
2058 if (error == 0) {
2059 softc->media_density = ctry[i];
2060 break;
2061 }
2062 }
2063 }
2064 switch (softc->media_density) {
2065 case SCSI_DENSITY_QIC_11_4TRK:
2066 case SCSI_DENSITY_QIC_11_9TRK:
2067 case SCSI_DENSITY_QIC_24:
2068 case SCSI_DENSITY_QIC_120:
2069 case SCSI_DENSITY_QIC_150:
2070 case SCSI_DENSITY_QIC_525_320:
2071 case SCSI_DENSITY_QIC_1320:
2072 case SCSI_DENSITY_QIC_3080:
2073 softc->quirks &= ~SA_QUIRK_2FM;
2074 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2075 softc->last_media_blksize = 512;
2076 break;
2077 case SCSI_DENSITY_QIC_4GB:
2078 case SCSI_DENSITY_QIC_2GB:
2079 softc->quirks &= ~SA_QUIRK_2FM;
2080 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2081 softc->last_media_blksize = 1024;
2082 break;
2083 default:
2084 softc->last_media_blksize =
2085 softc->media_blksize;
2086 softc->quirks |= SA_QUIRK_VARIABLE;
2087 break;
2088 }
2089 }
2090
2091 /*
2092 * If no quirk has determined that this is a device that needs
2093 * to have 2 Filemarks at EOD, now is the time to find out.
2094 */
2095
2096 if ((softc->quirks & SA_QUIRK_2FM) == 0) {
2097 switch (softc->media_density) {
2098 case SCSI_DENSITY_HALFINCH_800:
2099 case SCSI_DENSITY_HALFINCH_1600:
2100 case SCSI_DENSITY_HALFINCH_6250:
2101 case SCSI_DENSITY_HALFINCH_6250C:
2102 case SCSI_DENSITY_HALFINCH_PE:
2103 softc->quirks &= ~SA_QUIRK_1FM;
2104 softc->quirks |= SA_QUIRK_2FM;
2105 break;
2106 default:
2107 break;
2108 }
2109 }
2110
2111 /*
2112 * Now validate that some info we got makes sense.
2113 */
2114 if ((softc->max_blk < softc->media_blksize) ||
2115 (softc->min_blk > softc->media_blksize &&
2116 softc->media_blksize)) {
2117 xpt_print_path(ccb->ccb_h.path);
2118 printf("BLOCK LIMITS (%d..%d) could not match current "
2119 "block settings (%d)- adjusting\n", softc->min_blk,
2120 softc->max_blk, softc->media_blksize);
2121 softc->max_blk = softc->min_blk =
2122 softc->media_blksize;
2123 }
2124
2125 /*
2126 * Now put ourselves into the right frame of mind based
2127 * upon quirks...
2128 */
2129tryagain:
2130 /*
2131 * If we want to be in FIXED mode and our current blocksize
2132 * is not equal to our last blocksize (if nonzero), try and
2133 * set ourselves to this last blocksize (as the 'preferred'
2134 * block size). The initial quirkmatch at registry sets the
2135 * initial 'last' blocksize. If, for whatever reason, this
2136 * 'last' blocksize is zero, set the blocksize to 512,
2137 * or min_blk if that's larger.
2138 */
2139 if ((softc->quirks & SA_QUIRK_FIXED) &&
2140 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
2141 (softc->media_blksize != softc->last_media_blksize)) {
2142 softc->media_blksize = softc->last_media_blksize;
2143 if (softc->media_blksize == 0) {
2144 softc->media_blksize = 512;
2145 if (softc->media_blksize < softc->min_blk) {
2146 softc->media_blksize = softc->min_blk;
2147 }
2148 }
2149 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2150 softc->media_blksize, 0, 0, SF_NO_PRINT);
2151 if (error) {
2152 xpt_print_path(ccb->ccb_h.path);
2153 printf("unable to set fixed blocksize to %d\n",
2154 softc->media_blksize);
2155 goto exit;
2156 }
2157 }
2158
2159 if ((softc->quirks & SA_QUIRK_VARIABLE) &&
2160 (softc->media_blksize != 0)) {
2161 softc->last_media_blksize = softc->media_blksize;
2162 softc->media_blksize = 0;
2163 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2164 0, 0, 0, SF_NO_PRINT);
2165 if (error) {
2166 /*
2167 * If this fails and we were guessing, just
2168 * assume that we got it wrong and go try
2169 * fixed block mode. Don't even check against
2170 * density code at this point.
2171 */
2172 if (guessing) {
2173 softc->quirks &= ~SA_QUIRK_VARIABLE;
2174 softc->quirks |= SA_QUIRK_FIXED;
2175 if (softc->last_media_blksize == 0)
2176 softc->last_media_blksize = 512;
2177 goto tryagain;
2178 }
2179 xpt_print_path(ccb->ccb_h.path);
2180 printf("unable to set variable blocksize\n");
2181 goto exit;
2182 }
2183 }
2184
2185 /*
2186 * Now that we have the current block size,
2187 * set up some parameters for sastart's usage.
2188 */
2189 if (softc->media_blksize) {
2190 softc->flags |= SA_FLAG_FIXED;
2191 if (powerof2(softc->media_blksize)) {
2192 softc->blk_shift =
2193 ffs(softc->media_blksize) - 1;
2194 softc->blk_mask = softc->media_blksize - 1;
2195 } else {
2196 softc->blk_mask = ~0;
2197 softc->blk_shift = 0;
2198 }
2199 } else {
2200 /*
2201 * The SCSI-3 spec allows 0 to mean "unspecified".
2202 * The SCSI-1 spec allows 0 to mean 'infinite'.
2203 *
2204 * Either works here.
2205 */
2206 if (softc->max_blk == 0) {
2207 softc->max_blk = ~0;
2208 }
2209 softc->blk_shift = 0;
2210 if (softc->blk_gran != 0) {
2211 softc->blk_mask = softc->blk_gran - 1;
2212 } else {
2213 softc->blk_mask = 0;
2214 }
2215 }
2216
2217 if (write_protect)
2218 softc->flags |= SA_FLAG_TAPE_WP;
2219
2220 if (comp_supported) {
2221 if (softc->saved_comp_algorithm == 0)
2222 softc->saved_comp_algorithm =
2223 softc->comp_algorithm;
2224 softc->flags |= SA_FLAG_COMP_SUPP;
2225 if (comp_enabled)
2226 softc->flags |= SA_FLAG_COMP_ENABLED;
2227 } else
2228 softc->flags |= SA_FLAG_COMP_UNSUPP;
2229
2230 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
2231 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
2232 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
2233 0, 0, SF_NO_PRINT);
2234 if (error == 0) {
2235 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
2236 } else {
2237 xpt_print_path(ccb->ccb_h.path);
2238 printf("unable to set buffered mode\n");
2239 }
2240 error = 0; /* not an error */
2241 }
2242
2243
2244 if (error == 0) {
2245 softc->flags |= SA_FLAG_TAPE_MOUNTED;
2246 }
2247exit:
2248 if (rblim != NULL)
2249 free(rblim, M_TEMP);
2250
2251 if (error != 0) {
2252 softc->dsreg = MTIO_DSREG_NIL;
2253 } else {
2254 softc->fileno = softc->blkno = 0;
2255 softc->dsreg = MTIO_DSREG_REST;
2256 }
2257#ifdef SA_1FM_AT_EOD
2258 if ((softc->quirks & SA_QUIRK_2FM) == 0)
2259 softc->quirks |= SA_QUIRK_1FM;
2260#else
2261 if ((softc->quirks & SA_QUIRK_1FM) == 0)
2262 softc->quirks |= SA_QUIRK_2FM;
2263#endif
2264 } else
2265 xpt_release_ccb(ccb);
2266
2267 /*
2268 * If we return an error, we're not mounted any more,
2269 * so release any device reservation.
2270 */
2271 if (error != 0) {
2272 (void) sareservereleaseunit(periph, FALSE);
2273 } else {
2274 /*
2275 * Clear I/O residual.
2276 */
2277 softc->last_io_resid = 0;
2278 softc->last_ctl_resid = 0;
2279 }
2280 return (error);
2281}
2282
2283/*
2284 * How many filemarks do we need to write if we were to terminate the
2285 * tape session right now? Note that this can be a negative number
2286 */
2287
2288static int
2289samarkswanted(struct cam_periph *periph)
2290{
2291 int markswanted;
2292 struct sa_softc *softc;
2293
2294 softc = (struct sa_softc *)periph->softc;
2295 markswanted = 0;
2296 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
2297 markswanted++;
2298 if (softc->quirks & SA_QUIRK_2FM)
2299 markswanted++;
2300 }
2301 markswanted -= softc->filemarks;
2302 return (markswanted);
2303}
2304
2305static int
2306sacheckeod(struct cam_periph *periph)
2307{
2308 int error;
2309 int markswanted;
2310 struct sa_softc *softc;
2311
2312 softc = (struct sa_softc *)periph->softc;
2313 markswanted = samarkswanted(periph);
2314
2315 if (markswanted > 0) {
2316 error = sawritefilemarks(periph, markswanted, FALSE);
2317 } else {
2318 error = 0;
2319 }
2320 return (error);
2321}
2322
2323static int
2324saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
2325{
2326 static const char *toobig =
2327 "%d-byte tape record bigger than supplied buffer\n";
2328 struct cam_periph *periph;
2329 struct sa_softc *softc;
2330 struct ccb_scsiio *csio;
2331 struct scsi_sense_data *sense;
2332 u_int32_t resid = 0;
2333 int32_t info = 0;
2334 cam_status status;
2335 int error_code, sense_key, asc, ascq, error, aqvalid;
2336
2337 periph = xpt_path_periph(ccb->ccb_h.path);
2338 softc = (struct sa_softc *)periph->softc;
2339 csio = &ccb->csio;
2340 sense = &csio->sense_data;
2341 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq);
2342 aqvalid = sense->extra_len >= 6;
2343 error = 0;
2344
2345 status = csio->ccb_h.status & CAM_STATUS_MASK;
2346
2347 /*
2348 * Calculate/latch up, any residuals... We do this in a funny 2-step
2349 * so we can print stuff here if we have CAM_DEBUG enabled for this
2350 * unit.
2351 */
2352 if (status == CAM_SCSI_STATUS_ERROR) {
2353 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
2354 info = (int32_t) scsi_4btoul(sense->info);
2355 resid = info;
2356 if ((softc->flags & SA_FLAG_FIXED) != 0)
2357 resid *= softc->media_blksize;
2358 } else {
2359 resid = csio->dxfer_len;
2360 info = resid;
2361 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2362 if (softc->media_blksize)
2363 info /= softc->media_blksize;
2364 }
2365 }
2366 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) {
2367 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
2368 sizeof (struct scsi_sense_data));
2369 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
2370 (int) csio->cdb_len);
2371 softc->last_io_resid = resid;
2372 softc->last_resid_was_io = 1;
2373 } else {
2374 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
2375 sizeof (struct scsi_sense_data));
2376 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
2377 (int) csio->cdb_len);
2378 softc->last_ctl_resid = resid;
2379 softc->last_resid_was_io = 0;
2380 }
2381 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
2382 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d "
2383 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
2384 sense_key, asc, ascq, status,
2385 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len));
2386 } else {
2387 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2388 ("Cam Status 0x%x\n", status));
2389 }
2390
2391 switch (status) {
2392 case CAM_REQ_CMP:
2393 return (0);
2394 case CAM_SCSI_STATUS_ERROR:
2395 /*
2396 * If a read/write command, we handle it here.
2397 */
2398 if (CCB_Type(csio) != SA_CCB_WAITING) {
2399 break;
2400 }
2401 /*
2402 * If this was just EOM/EOP, Filemark, Setmark or ILI detected
2403 * on a non read/write command, we assume it's not an error
2404 * and propagate the residule and return.
2405 */
2406 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) ||
2407 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
2408 csio->resid = resid;
2409 QFRLS(ccb);
2410 return (0);
2411 }
2412 /*
2413 * Otherwise, we let the common code handle this.
2414 */
2415 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2416
2417 /*
2418 * XXX: To Be Fixed
2419 * We cannot depend upon CAM honoring retry counts for these.
2420 */
2421 case CAM_SCSI_BUS_RESET:
2422 case CAM_BDR_SENT:
2423 if (ccb->ccb_h.retry_count <= 0) {
2424 return (EIO);
2425 break;
2426 }
2427 /* FALLTHROUGH */
2428 default:
2429 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2430 }
2431
2432 /*
2433 * Handle filemark, end of tape, mismatched record sizes....
2434 * From this point out, we're only handling read/write cases.
2435 * Handle writes && reads differently.
2436 */
2437
2438 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
2439 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
2440 csio->resid = resid;
2441 error = ENOSPC;
2442 } else if (sense->flags & SSD_EOM) {
2443 softc->flags |= SA_FLAG_EOM_PENDING;
2444 /*
2445 * Grotesque as it seems, the few times
2446 * I've actually seen a non-zero resid,
2447 * the tape drive actually lied and had
2448 * writtent all the data!.
2449 */
2450 csio->resid = 0;
2451 }
2452 } else {
2453 csio->resid = resid;
2454 if (sense_key == SSD_KEY_BLANK_CHECK) {
2455 if (softc->quirks & SA_QUIRK_1FM) {
2456 error = 0;
2457 softc->flags |= SA_FLAG_EOM_PENDING;
2458 } else {
2459 error = EIO;
2460 }
2461 } else if (sense->flags & SSD_FILEMARK) {
2462 if (softc->flags & SA_FLAG_FIXED) {
2463 error = -1;
2464 softc->flags |= SA_FLAG_EOF_PENDING;
2465 }
2466 /*
2467 * Unconditionally, if we detected a filemark on a read,
2468 * mark that we've run moved a file ahead.
2469 */
2470 if (softc->fileno != (daddr_t) -1) {
2471 softc->fileno++;
2472 softc->blkno = 0;
2473 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
2474 }
2475 }
2476 }
2477
2478 /*
2479 * Incorrect Length usually applies to read, but can apply to writes.
2480 */
2481 if (error == 0 && (sense->flags & SSD_ILI)) {
2482 if (info < 0) {
2483 xpt_print_path(csio->ccb_h.path);
2484 printf(toobig, csio->dxfer_len - info);
2485 csio->resid = csio->dxfer_len;
2486 error = EIO;
2487 } else {
2488 csio->resid = resid;
2489 if (softc->flags & SA_FLAG_FIXED) {
2490 softc->flags |= SA_FLAG_EIO_PENDING;
2491 }
2492 /*
2493 * Bump the block number if we hadn't seen a filemark.
2494 * Do this independent of errors (we've moved anyway).
2495 */
2496 if ((sense->flags & SSD_FILEMARK) == 0) {
2497 if (softc->blkno != (daddr_t) -1) {
2498 softc->blkno++;
2499 csio->ccb_h.ccb_pflags |=
2500 SA_POSITION_UPDATED;
2501 }
2502 }
2503 }
2504 }
2505
2506 if (error <= 0) {
2507 /*
2508 * Unfreeze the queue if frozen as we're not returning anything
2509 * to our waiters that would indicate an I/O error has occurred
2510 * (yet).
2511 */
2512 QFRLS(ccb);
2513 error = 0;
2514 }
2515 return (error);
2516}
2517
2518static int
2519sagetparams(struct cam_periph *periph, sa_params params_to_get,
2520 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
2521 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
2522 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
2523 sa_comp_t *tcs)
2524{
2525 union ccb *ccb;
2526 void *mode_buffer;
2527 struct scsi_mode_header_6 *mode_hdr;
2528 struct scsi_mode_blk_desc *mode_blk;
2529 int mode_buffer_len;
2530 struct sa_softc *softc;
2531 u_int8_t cpage;
2532 int error;
2533 cam_status status;
2534
2535 softc = (struct sa_softc *)periph->softc;
2536 ccb = cam_periph_getccb(periph, 1);
2537 if (softc->quirks & SA_QUIRK_NO_CPAGE)
2538 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2539 else
2540 cpage = SA_DATA_COMPRESSION_PAGE;
2541
2542retry:
2543 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2544
2545 if (params_to_get & SA_PARAM_COMPRESSION) {
2546 if (softc->quirks & SA_QUIRK_NOCOMP) {
2547 *comp_supported = FALSE;
2548 params_to_get &= ~SA_PARAM_COMPRESSION;
2549 } else
2550 mode_buffer_len += sizeof (sa_comp_t);
2551 }
2552
2553 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK);
2554 bzero(mode_buffer, mode_buffer_len);
2555 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2556 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2557
2558 /* it is safe to retry this */
2559 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2560 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
2561 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
2562 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2563
2564 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2565 &softc->device_stats);
2566 QFRLS(ccb);
2567
2568 status = ccb->ccb_h.status & CAM_STATUS_MASK;
2569
2570 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
2571 /*
2572 * Hmm. Let's see if we can try another page...
2573 * If we've already done that, give up on compression
2574 * for this device and remember this for the future
2575 * and attempt the request without asking for compression
2576 * info.
2577 */
2578 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2579 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2580 goto retry;
2581 }
2582 softc->quirks |= SA_QUIRK_NOCOMP;
2583 free(mode_buffer, M_TEMP);
2584 goto retry;
2585 } else if (status == CAM_SCSI_STATUS_ERROR) {
2586 /* Tell the user about the fatal error. */
2587 scsi_sense_print(&ccb->csio);
2588 goto sagetparamsexit;
2589 }
2590
2591 /*
2592 * If the user only wants the compression information, and
2593 * the device doesn't send back the block descriptor, it's
2594 * no big deal. If the user wants more than just
2595 * compression, though, and the device doesn't pass back the
2596 * block descriptor, we need to send another mode sense to
2597 * get the block descriptor.
2598 */
2599 if ((mode_hdr->blk_desc_len == 0) &&
2600 (params_to_get & SA_PARAM_COMPRESSION) &&
2601 (params_to_get & ~(SA_PARAM_COMPRESSION))) {
2602
2603 /*
2604 * Decrease the mode buffer length by the size of
2605 * the compression page, to make sure the data
2606 * there doesn't get overwritten.
2607 */
2608 mode_buffer_len -= sizeof (sa_comp_t);
2609
2610 /*
2611 * Now move the compression page that we presumably
2612 * got back down the memory chunk a little bit so
2613 * it doesn't get spammed.
2614 */
2615 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
2616 bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
2617
2618 /*
2619 * Now, we issue another mode sense and just ask
2620 * for the block descriptor, etc.
2621 */
2622
2623 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2624 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
2625 mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
2626 SCSIOP_TIMEOUT);
2627
2628 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2629 &softc->device_stats);
2630 QFRLS(ccb);
2631
2632 if (error != 0)
2633 goto sagetparamsexit;
2634 }
2635
2636 if (params_to_get & SA_PARAM_BLOCKSIZE)
2637 *blocksize = scsi_3btoul(mode_blk->blklen);
2638
2639 if (params_to_get & SA_PARAM_NUMBLOCKS)
2640 *numblocks = scsi_3btoul(mode_blk->nblocks);
2641
2642 if (params_to_get & SA_PARAM_BUFF_MODE)
2643 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
2644
2645 if (params_to_get & SA_PARAM_DENSITY)
2646 *density = mode_blk->density;
2647
2648 if (params_to_get & SA_PARAM_WP)
2649 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
2650
2651 if (params_to_get & SA_PARAM_SPEED)
2652 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
2653
2654 if (params_to_get & SA_PARAM_COMPRESSION) {
2655 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
2656 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2657 struct scsi_data_compression_page *cp = &ntcs->dcomp;
2658 *comp_supported =
2659 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
2660 *comp_enabled =
2661 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
2662 *comp_algorithm = scsi_4btoul(cp->comp_algorithm);
2663 } else {
2664 struct scsi_dev_conf_page *cp = &ntcs->dconf;
2665 /*
2666 * We don't really know whether this device supports
2667 * Data Compression if the the algorithm field is
2668 * zero. Just say we do.
2669 */
2670 *comp_supported = TRUE;
2671 *comp_enabled =
2672 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
2673 *comp_algorithm = cp->sel_comp_alg;
2674 }
2675 if (tcs != NULL)
2676 bcopy(ntcs, tcs, sizeof (sa_comp_t));
2677 }
2678
2679 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2680 int idx;
2681 char *xyz = mode_buffer;
2682 xpt_print_path(periph->path);
2683 printf("Mode Sense Data=");
2684 for (idx = 0; idx < mode_buffer_len; idx++)
2685 printf(" 0x%02x", xyz[idx] & 0xff);
2686 printf("\n");
2687 }
2688
2689sagetparamsexit:
2690
2691 xpt_release_ccb(ccb);
2692 free(mode_buffer, M_TEMP);
2693 return (error);
2694}
2695
2696/*
2697 * The purpose of this function is to set one of four different parameters
2698 * for a tape drive:
2699 * - blocksize
2700 * - density
2701 * - compression / compression algorithm
2702 * - buffering mode
2703 *
2704 * The assumption is that this will be called from saioctl(), and therefore
2705 * from a process context. Thus the waiting malloc calls below. If that
2706 * assumption ever changes, the malloc calls should be changed to be
2707 * NOWAIT mallocs.
2708 *
2709 * Any or all of the four parameters may be set when this function is
2710 * called. It should handle setting more than one parameter at once.
2711 */
2712static int
2713sasetparams(struct cam_periph *periph, sa_params params_to_set,
2714 u_int32_t blocksize, u_int8_t density, u_int32_t calg,
2715 u_int32_t sense_flags)
2716{
2717 struct sa_softc *softc;
2718 u_int32_t current_blocksize;
2719 u_int32_t current_calg;
2720 u_int8_t current_density;
2721 u_int8_t current_speed;
2722 int comp_enabled, comp_supported;
2723 void *mode_buffer;
2724 int mode_buffer_len;
2725 struct scsi_mode_header_6 *mode_hdr;
2726 struct scsi_mode_blk_desc *mode_blk;
2727 sa_comp_t *ccomp, *cpage;
2728 int buff_mode;
2729 union ccb *ccb = NULL;
2730 int error;
2731
2732 softc = (struct sa_softc *)periph->softc;
2733
2734 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK);
2735
2736 /*
2737 * Since it doesn't make sense to set the number of blocks, or
2738 * write protection, we won't try to get the current value. We
2739 * always want to get the blocksize, so we can set it back to the
2740 * proper value.
2741 */
2742 error = sagetparams(periph,
2743 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED,
2744 &current_blocksize, &current_density, NULL, &buff_mode, NULL,
2745 &current_speed, &comp_supported, &comp_enabled,
2746 &current_calg, ccomp);
2747
2748 if (error != 0) {
2749 free(ccomp, M_TEMP);
2750 return (error);
2751 }
2752
2753 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2754 if (params_to_set & SA_PARAM_COMPRESSION)
2755 mode_buffer_len += sizeof (sa_comp_t);
2756
2757 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK);
2758 bzero(mode_buffer, mode_buffer_len);
2759
2760 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2761 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2762
2763 ccb = cam_periph_getccb(periph, 1);
2764
2765retry:
2766
2767 if (params_to_set & SA_PARAM_COMPRESSION) {
2768 if (mode_blk) {
2769 cpage = (sa_comp_t *)&mode_blk[1];
2770 } else {
2771 cpage = (sa_comp_t *)&mode_hdr[1];
2772 }
2773 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2774 cpage->hdr.pagecode &= ~0x80;
2775 } else
2776 cpage = NULL;
2777
2778 /*
2779 * If the caller wants us to set the blocksize, use the one they
2780 * pass in. Otherwise, use the blocksize we got back from the
2781 * mode select above.
2782 */
2783 if (mode_blk) {
2784 if (params_to_set & SA_PARAM_BLOCKSIZE)
2785 scsi_ulto3b(blocksize, mode_blk->blklen);
2786 else
2787 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2788
2789 /*
2790 * Set density if requested, else preserve old density.
2791 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2792 * devices, else density we've latched up in our softc.
2793 */
2794 if (params_to_set & SA_PARAM_DENSITY) {
2795 mode_blk->density = density;
2796 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2797 mode_blk->density = SCSI_SAME_DENSITY;
2798 } else {
2799 mode_blk->density = softc->media_density;
2800 }
2801 }
2802
2803 /*
2804 * For mode selects, these two fields must be zero.
2805 */
2806 mode_hdr->data_length = 0;
2807 mode_hdr->medium_type = 0;
2808
2809 /* set the speed to the current value */
2810 mode_hdr->dev_spec = current_speed;
2811
2812 /* set single-initiator buffering mode */
2813 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
2814
2815 if (mode_blk)
2816 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
2817 else
2818 mode_hdr->blk_desc_len = 0;
2819
2820 /*
2821 * First, if the user wants us to set the compression algorithm or
2822 * just turn compression on, check to make sure that this drive
2823 * supports compression.
2824 */
2825 if (params_to_set & SA_PARAM_COMPRESSION) {
2826 /*
2827 * If the compression algorithm is 0, disable compression.
2828 * If the compression algorithm is non-zero, enable
2829 * compression and set the compression type to the
2830 * specified compression algorithm, unless the algorithm is
2831 * MT_COMP_ENABLE. In that case, we look at the
2832 * compression algorithm that is currently set and if it is
2833 * non-zero, we leave it as-is. If it is zero, and we have
2834 * saved a compression algorithm from a time when
2835 * compression was enabled before, set the compression to
2836 * the saved value.
2837 */
2838 switch (ccomp->hdr.pagecode & ~0x80) {
2839 case SA_DATA_COMPRESSION_PAGE:
2840 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
2841 struct scsi_data_compression_page *dcp = &cpage->dcomp;
2842 if (calg == 0) {
2843 /*
2844 * Disable compression, but leave the
2845 * decompression and the capability bit
2846 * alone.
2847 */
2848 dcp->dce_and_dcc = SA_DCP_DCC;
2849 dcp->dde_and_red |= SA_DCP_DDE;
2850 break;
2851 }
2852 /* enable compression && decompression */
2853 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
2854 dcp->dde_and_red |= SA_DCP_DDE;
2855 /*
2856 * If there, use compression algorithm from caller.
2857 * Otherwise, if there's a saved compression algorithm
2858 * and there is no current algorithm, use the saved
2859 * algorithm. Else parrot back what we got and hope
2860 * for the best.
2861 */
2862 if (calg != MT_COMP_ENABLE) {
2863 scsi_ulto4b(calg, dcp->comp_algorithm);
2864 scsi_ulto4b(calg, dcp->decomp_algorithm);
2865 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
2866 softc->saved_comp_algorithm != 0) {
2867 scsi_ulto4b(softc->saved_comp_algorithm,
2868 dcp->comp_algorithm);
2869 scsi_ulto4b(softc->saved_comp_algorithm,
2870 dcp->decomp_algorithm);
2871 }
2872 break;
2873 }
2874 case SA_DEVICE_CONFIGURATION_PAGE:
2875 {
2876 struct scsi_dev_conf_page *dcp = &cpage->dconf;
2877 if (calg == 0) {
2878 dcp->sel_comp_alg = SA_COMP_NONE;
2879 break;
2880 }
2881 if (calg != MT_COMP_ENABLE) {
2882 dcp->sel_comp_alg = calg;
2883 } else if (dcp->sel_comp_alg == SA_COMP_NONE &&
2884 softc->saved_comp_algorithm != 0) {
2885 dcp->sel_comp_alg = softc->saved_comp_algorithm;
2886 }
2887 break;
2888 }
2889 default:
2890 /*
2891 * The drive doesn't seem to support compression,
2892 * so turn off the set compression bit.
2893 */
2894 params_to_set &= ~SA_PARAM_COMPRESSION;
2895 xpt_print_path(periph->path);
2896 printf("device does not seem to support compression\n");
2897
2898 /*
2899 * If that was the only thing the user wanted us to set,
2900 * clean up allocated resources and return with
2901 * 'operation not supported'.
2902 */
2903 if (params_to_set == SA_PARAM_NONE) {
2904 free(mode_buffer, M_TEMP);
2905 xpt_release_ccb(ccb);
2906 return (ENODEV);
2907 }
2908
2909 /*
2910 * That wasn't the only thing the user wanted us to set.
2911 * So, decrease the stated mode buffer length by the
2912 * size of the compression mode page.
2913 */
2914 mode_buffer_len -= sizeof(sa_comp_t);
2915 }
2916 }
2917
2918 /* It is safe to retry this operation */
2919 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
2920 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
2921 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2922
2923 error = cam_periph_runccb(ccb, saerror, 0,
2924 sense_flags, &softc->device_stats);
2925 QFRLS(ccb);
2926
2927 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2928 int idx;
2929 char *xyz = mode_buffer;
2930 xpt_print_path(periph->path);
2931 printf("Err%d, Mode Select Data=", error);
2932 for (idx = 0; idx < mode_buffer_len; idx++)
2933 printf(" 0x%02x", xyz[idx] & 0xff);
2934 printf("\n");
2935 }
2936
2937
2938 if (error) {
2939 /*
2940 * If we can, try without setting density/blocksize.
2941 */
2942 if (mode_blk) {
2943 if ((params_to_set &
2944 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
2945 mode_blk = NULL;
2946 goto retry;
2947 }
2948 } else {
2949 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2950 cpage = (sa_comp_t *)&mode_blk[1];
2951 }
2952
2953 /*
2954 * If we were setting the blocksize, and that failed, we
2955 * want to set it to its original value. If we weren't
2956 * setting the blocksize, we don't want to change it.
2957 */
2958 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2959
2960 /*
2961 * Set density if requested, else preserve old density.
2962 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2963 * devices, else density we've latched up in our softc.
2964 */
2965 if (params_to_set & SA_PARAM_DENSITY) {
2966 mode_blk->density = current_density;
2967 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2968 mode_blk->density = SCSI_SAME_DENSITY;
2969 } else {
2970 mode_blk->density = softc->media_density;
2971 }
2972
2973 if (params_to_set & SA_PARAM_COMPRESSION)
2974 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2975
2976 /*
2977 * The retry count is the only CCB field that might have been
2978 * changed that we care about, so reset it back to 1.
2979 */
2980 ccb->ccb_h.retry_count = 1;
2981 cam_periph_runccb(ccb, saerror, 0, sense_flags,
2982 &softc->device_stats);
2983 QFRLS(ccb);
2984 }
2985
2986 xpt_release_ccb(ccb);
2987
2988 if (ccomp != NULL)
2989 free(ccomp, M_TEMP);
2990
2991 if (params_to_set & SA_PARAM_COMPRESSION) {
2992 if (error) {
2993 softc->flags &= ~SA_FLAG_COMP_ENABLED;
2994 /*
2995 * Even if we get an error setting compression,
2996 * do not say that we don't support it. We could
2997 * have been wrong, or it may be media specific.
2998 * softc->flags &= ~SA_FLAG_COMP_SUPP;
2999 */
3000 softc->saved_comp_algorithm = softc->comp_algorithm;
3001 softc->comp_algorithm = 0;
3002 } else {
3003 softc->flags |= SA_FLAG_COMP_ENABLED;
3004 softc->comp_algorithm = calg;
3005 }
3006 }
3007
3008 free(mode_buffer, M_TEMP);
3009 return (error);
3010}
3011
3012static void
3013saprevent(struct cam_periph *periph, int action)
3014{
3015 struct sa_softc *softc;
3016 union ccb *ccb;
3017 int error, sf;
3018
3019 softc = (struct sa_softc *)periph->softc;
3020
3021 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
3022 return;
3023 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
3024 return;
3025
3026 /*
3027 * We can be quiet about illegal requests.
3028 */
3029 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
3030 sf = 0;
3031 } else
3032 sf = SF_QUIET_IR;
3033
3034 ccb = cam_periph_getccb(periph, 1);
3035
3036 /* It is safe to retry this operation */
3037 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
3038 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3039
3040 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats);
3041 QFRLS(ccb);
3042 if (error == 0) {
3043 if (action == PR_ALLOW)
3044 softc->flags &= ~SA_FLAG_TAPE_LOCKED;
3045 else
3046 softc->flags |= SA_FLAG_TAPE_LOCKED;
3047 }
3048
3049 xpt_release_ccb(ccb);
3050}
3051
3052static int
3053sarewind(struct cam_periph *periph)
3054{
3055 union ccb *ccb;
3056 struct sa_softc *softc;
3057 int error;
3058
3059 softc = (struct sa_softc *)periph->softc;
3060
3061 ccb = cam_periph_getccb(periph, 1);
3062
3063 /* It is safe to retry this operation */
3064 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3065 SSD_FULL_SIZE, REWIND_TIMEOUT);
3066
3067 softc->dsreg = MTIO_DSREG_REW;
3068 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3069 softc->dsreg = MTIO_DSREG_REST;
3070
3071 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3072 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3073
3074 xpt_release_ccb(ccb);
3075 if (error == 0)
3076 softc->fileno = softc->blkno = (daddr_t) 0;
3077 else
3078 softc->fileno = softc->blkno = (daddr_t) -1;
3079 return (error);
3080}
3081
3082static int
3083saspace(struct cam_periph *periph, int count, scsi_space_code code)
3084{
3085 union ccb *ccb;
3086 struct sa_softc *softc;
3087 int error;
3088
3089 softc = (struct sa_softc *)periph->softc;
3090
3091 ccb = cam_periph_getccb(periph, 1);
3092
3093 /* This cannot be retried */
3094
3095 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
3096 SSD_FULL_SIZE, SPACE_TIMEOUT);
3097
3098 /*
3099 * Clear residual because we will be using it.
3100 */
3101 softc->last_ctl_resid = 0;
3102
3103 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
3104 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3105 softc->dsreg = MTIO_DSREG_REST;
3106
3107 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3108 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3109
3110 xpt_release_ccb(ccb);
3111
3112 /*
3113 * If a spacing operation has failed, we need to invalidate
3114 * this mount.
3115 *
3116 * If the spacing operation was setmarks or to end of recorded data,
3117 * we no longer know our relative position.
3118 *
3119 * If the spacing operations was spacing files in reverse, we
3120 * take account of the residual, but still check against less
3121 * than zero- if we've gone negative, we must have hit BOT.
3122 *
3123 * If the spacing operations was spacing records in reverse and
3124 * we have a residual, we've either hit BOT or hit a filemark.
3125 * In the former case, we know our new record number (0). In
3126 * the latter case, we have absolutely no idea what the real
3127 * record number is- we've stopped between the end of the last
3128 * record in the previous file and the filemark that stopped
3129 * our spacing backwards.
3130 */
3131 if (error) {
3132 softc->fileno = softc->blkno = (daddr_t) -1;
3133 } else if (code == SS_SETMARKS || code == SS_EOD) {
3134 softc->fileno = softc->blkno = (daddr_t) -1;
3135 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
3136 softc->fileno += (count - softc->last_ctl_resid);
3137 if (softc->fileno < 0) /* we must of hit BOT */
3138 softc->fileno = 0;
3139 softc->blkno = 0;
3140 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
3141 softc->blkno += (count - softc->last_ctl_resid);
3142 if (count < 0) {
3143 if (softc->last_ctl_resid || softc->blkno < 0) {
3144 if (softc->fileno == 0) {
3145 softc->blkno = 0;
3146 } else {
3147 softc->blkno = (daddr_t) -1;
3148 }
3149 }
3150 }
3151 }
3152 return (error);
3153}
3154
3155static int
3156sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
3157{
3158 union ccb *ccb;
3159 struct sa_softc *softc;
3160 int error, nwm = 0;
3161
3162 softc = (struct sa_softc *)periph->softc;
3163
3164 ccb = cam_periph_getccb(periph, 1);
3165 /*
3166 * Clear residual because we will be using it.
3167 */
3168 softc->last_ctl_resid = 0;
3169
3170 softc->dsreg = MTIO_DSREG_FMK;
3171 /* this *must* not be retried */
3172 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
3173 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
3174 softc->dsreg = MTIO_DSREG_REST;
3175
3176
3177 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3178
3179 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3180 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3181
3182 if (error == 0 && nmarks) {
3183 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3184 nwm = nmarks - softc->last_ctl_resid;
3185 softc->filemarks += nwm;
3186 }
3187
3188 xpt_release_ccb(ccb);
3189
3190 /*
3191 * Update relative positions (if we're doing that).
3192 */
3193 if (error) {
3194 softc->fileno = softc->blkno = (daddr_t) -1;
3195 } else if (softc->fileno != (daddr_t) -1) {
3196 softc->fileno += nwm;
3197 softc->blkno = 0;
3198 }
3199 return (error);
3200}
3201
3202static int
3203sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3204{
3205 struct scsi_tape_position_data loc;
3206 union ccb *ccb;
3207 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3208 int error;
3209
3210 /*
3211 * We try and flush any buffered writes here if we were writing
3212 * and we're trying to get hardware block position. It eats
3213 * up performance substantially, but I'm wary of drive firmware.
3214 *
3215 * I think that *logical* block position is probably okay-
3216 * but hardware block position might have to wait for data
3217 * to hit media to be valid. Caveat Emptor.
3218 */
3219
3220 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
3221 error = sawritefilemarks(periph, 0, 0);
3222 if (error && error != EACCES)
3223 return (error);
3224 }
3225
3226 ccb = cam_periph_getccb(periph, 1);
3227 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3228 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3229 softc->dsreg = MTIO_DSREG_RBSY;
3230 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3231 softc->dsreg = MTIO_DSREG_REST;
3232 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3233 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3234
3235 if (error == 0) {
3236 if (loc.flags & SA_RPOS_UNCERTAIN) {
3237 error = EINVAL; /* nothing is certain */
3238 } else {
3239 *blkptr = scsi_4btoul(loc.firstblk);
3240 }
3241 }
3242
3243 xpt_release_ccb(ccb);
3244 return (error);
3245}
3246
3247static int
3248sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3249{
3250 union ccb *ccb;
3251 struct sa_softc *softc;
3252 int error;
3253
3254 /*
3255 * We used to try and flush any buffered writes here.
3256 * Now we push this onto user applications to either
3257 * flush the pending writes themselves (via a zero count
3258 * WRITE FILEMARKS command) or they can trust their tape
3259 * drive to do this correctly for them.
3260 */
3261
3262 softc = (struct sa_softc *)periph->softc;
3263 ccb = cam_periph_getccb(periph, 1);
3264
3265
3266 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3267 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT);
3268
3269
3270 softc->dsreg = MTIO_DSREG_POS;
3271 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3272 softc->dsreg = MTIO_DSREG_REST;
3273 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3274 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3275 xpt_release_ccb(ccb);
3276 /*
3277 * Note relative file && block number position as now unknown.
3278 */
3279 softc->fileno = softc->blkno = (daddr_t) -1;
3280 return (error);
3281}
3282
3283static int
3284saretension(struct cam_periph *periph)
3285{
3286 union ccb *ccb;
3287 struct sa_softc *softc;
3288 int error;
3289
3290 softc = (struct sa_softc *)periph->softc;
3291
3292 ccb = cam_periph_getccb(periph, 1);
3293
3294 /* It is safe to retry this operation */
3295 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3296 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
3297
3298 softc->dsreg = MTIO_DSREG_TEN;
3299 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3300 softc->dsreg = MTIO_DSREG_REST;
3301
3302 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3303 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3304 xpt_release_ccb(ccb);
3305 if (error == 0)
3306 softc->fileno = softc->blkno = (daddr_t) 0;
3307 else
3308 softc->fileno = softc->blkno = (daddr_t) -1;
3309 return (error);
3310}
3311
3312static int
3313sareservereleaseunit(struct cam_periph *periph, int reserve)
3314{
3315 union ccb *ccb;
3316 struct sa_softc *softc;
3317 int error;
3318
3319 softc = (struct sa_softc *)periph->softc;
3320 ccb = cam_periph_getccb(periph, 1);
3321
3322 /* It is safe to retry this operation */
3323 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
3324 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
3325 softc->dsreg = MTIO_DSREG_RBSY;
3326 error = cam_periph_runccb(ccb, saerror, 0,
3327 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats);
3328 softc->dsreg = MTIO_DSREG_REST;
3329 QFRLS(ccb);
3330 xpt_release_ccb(ccb);
3331
3332 /*
3333 * If the error was Illegal Request, then the device doesn't support
3334 * RESERVE/RELEASE. This is not an error.
3335 */
3336 if (error == EINVAL) {
3337 error = 0;
3338 }
3339
3340 return (error);
3341}
3342
3343static int
3344saloadunload(struct cam_periph *periph, int load)
3345{
3346 union ccb *ccb;
3347 struct sa_softc *softc;
3348 int error;
3349
3350 softc = (struct sa_softc *)periph->softc;
3351
3352 ccb = cam_periph_getccb(periph, 1);
3353
3354 /* It is safe to retry this operation */
3355 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3356 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
3357
3358 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
3359 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3360 softc->dsreg = MTIO_DSREG_REST;
3361 QFRLS(ccb);
3362 xpt_release_ccb(ccb);
3363
3364 if (error || load == 0)
3365 softc->fileno = softc->blkno = (daddr_t) -1;
3366 else if (error == 0)
3367 softc->fileno = softc->blkno = (daddr_t) 0;
3368 return (error);
3369}
3370
3371static int
3372saerase(struct cam_periph *periph, int longerase)
3373{
3374
3375 union ccb *ccb;
3376 struct sa_softc *softc;
3377 int error;
3378
3379 softc = (struct sa_softc *)periph->softc;
3380
3381 ccb = cam_periph_getccb(periph, 1);
3382
3383 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
3384 SSD_FULL_SIZE, ERASE_TIMEOUT);
3385
3386 softc->dsreg = MTIO_DSREG_ZER;
3387 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3388 softc->dsreg = MTIO_DSREG_REST;
3389
3390 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3391 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3392 xpt_release_ccb(ccb);
3393 return (error);
3394}
3395
3396#endif /* _KERNEL */
3397
3398/*
3399 * Read tape block limits command.
3400 */
3401void
3402scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
3403 void (*cbfcnp)(struct cam_periph *, union ccb *),
3404 u_int8_t tag_action,
3405 struct scsi_read_block_limits_data *rlimit_buf,
3406 u_int8_t sense_len, u_int32_t timeout)
3407{
3408 struct scsi_read_block_limits *scsi_cmd;
3409
3410 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3411 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
3412 sizeof(*scsi_cmd), timeout);
3413
3414 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
3415 bzero(scsi_cmd, sizeof(*scsi_cmd));
3416 scsi_cmd->opcode = READ_BLOCK_LIMITS;
3417}
3418
3419void
3420scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
3421 void (*cbfcnp)(struct cam_periph *, union ccb *),
3422 u_int8_t tag_action, int readop, int sli,
3423 int fixed, u_int32_t length, u_int8_t *data_ptr,
3424 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
3425{
3426 struct scsi_sa_rw *scsi_cmd;
3427
3428 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
3429 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE;
3430 scsi_cmd->sli_fixed = 0;
3431 if (sli && readop)
3432 scsi_cmd->sli_fixed |= SAR_SLI;
3433 if (fixed)
3434 scsi_cmd->sli_fixed |= SARW_FIXED;
3435 scsi_ulto3b(length, scsi_cmd->length);
3436 scsi_cmd->control = 0;
3437
3438 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT,
3439 tag_action, data_ptr, dxfer_len, sense_len,
3440 sizeof(*scsi_cmd), timeout);
3441}
3442
3443void
3444scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
3445 void (*cbfcnp)(struct cam_periph *, union ccb *),
3446 u_int8_t tag_action, int immediate, int eot,
3447 int reten, int load, u_int8_t sense_len,
3448 u_int32_t timeout)
3449{
3450 struct scsi_load_unload *scsi_cmd;
3451
3452 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
3453 bzero(scsi_cmd, sizeof(*scsi_cmd));
3454 scsi_cmd->opcode = LOAD_UNLOAD;
3455 if (immediate)
3456 scsi_cmd->immediate = SLU_IMMED;
3457 if (eot)
3458 scsi_cmd->eot_reten_load |= SLU_EOT;
3459 if (reten)
3460 scsi_cmd->eot_reten_load |= SLU_RETEN;
3461 if (load)
3462 scsi_cmd->eot_reten_load |= SLU_LOAD;
3463
3464 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3465 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
3466}
3467
3468void
3469scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
3470 void (*cbfcnp)(struct cam_periph *, union ccb *),
3471 u_int8_t tag_action, int immediate, u_int8_t sense_len,
3472 u_int32_t timeout)
3473{
3474 struct scsi_rewind *scsi_cmd;
3475
3476 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
3477 bzero(scsi_cmd, sizeof(*scsi_cmd));
3478 scsi_cmd->opcode = REWIND;
3479 if (immediate)
3480 scsi_cmd->immediate = SREW_IMMED;
3481
3482 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3483 0, sense_len, sizeof(*scsi_cmd), timeout);
3484}
3485
3486void
3487scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
3488 void (*cbfcnp)(struct cam_periph *, union ccb *),
3489 u_int8_t tag_action, scsi_space_code code,
3490 u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
3491{
3492 struct scsi_space *scsi_cmd;
3493
3494 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
3495 scsi_cmd->opcode = SPACE;
3496 scsi_cmd->code = code;
3497 scsi_ulto3b(count, scsi_cmd->count);
3498 scsi_cmd->control = 0;
3499
3500 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3501 0, sense_len, sizeof(*scsi_cmd), timeout);
3502}
3503
3504void
3505scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
3506 void (*cbfcnp)(struct cam_periph *, union ccb *),
3507 u_int8_t tag_action, int immediate, int setmark,
3508 u_int32_t num_marks, u_int8_t sense_len,
3509 u_int32_t timeout)
3510{
3511 struct scsi_write_filemarks *scsi_cmd;
3512
3513 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
3514 bzero(scsi_cmd, sizeof(*scsi_cmd));
3515 scsi_cmd->opcode = WRITE_FILEMARKS;
3516 if (immediate)
3517 scsi_cmd->byte2 |= SWFMRK_IMMED;
3518 if (setmark)
3519 scsi_cmd->byte2 |= SWFMRK_WSMK;
3520
3521 scsi_ulto3b(num_marks, scsi_cmd->num_marks);
3522
3523 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3524 0, sense_len, sizeof(*scsi_cmd), timeout);
3525}
3526
3527/*
3528 * The reserve and release unit commands differ only by their opcodes.
3529 */
3530void
3531scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
3532 void (*cbfcnp)(struct cam_periph *, union ccb *),
3533 u_int8_t tag_action, int third_party,
3534 int third_party_id, u_int8_t sense_len,
3535 u_int32_t timeout, int reserve)
3536{
3537 struct scsi_reserve_release_unit *scsi_cmd;
3538
3539 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
3540 bzero(scsi_cmd, sizeof(*scsi_cmd));
3541
3542 if (reserve)
3543 scsi_cmd->opcode = RESERVE_UNIT;
3544 else
3545 scsi_cmd->opcode = RELEASE_UNIT;
3546
3547 if (third_party) {
3548 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
3549 scsi_cmd->lun_thirdparty |=
3550 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
3551 }
3552
3553 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3554 0, sense_len, sizeof(*scsi_cmd), timeout);
3555}
3556
3557void
3558scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
3559 void (*cbfcnp)(struct cam_periph *, union ccb *),
3560 u_int8_t tag_action, int immediate, int long_erase,
3561 u_int8_t sense_len, u_int32_t timeout)
3562{
3563 struct scsi_erase *scsi_cmd;
3564
3565 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
3566 bzero(scsi_cmd, sizeof(*scsi_cmd));
3567
3568 scsi_cmd->opcode = ERASE;
3569
3570 if (immediate)
3571 scsi_cmd->lun_imm_long |= SE_IMMED;
3572
3573 if (long_erase)
3574 scsi_cmd->lun_imm_long |= SE_LONG;
3575
3576 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3577 0, sense_len, sizeof(*scsi_cmd), timeout);
3578}
3579
3580/*
3581 * Read Tape Position command.
3582 */
3583void
3584scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
3585 void (*cbfcnp)(struct cam_periph *, union ccb *),
3586 u_int8_t tag_action, int hardsoft,
3587 struct scsi_tape_position_data *sbp,
3588 u_int8_t sense_len, u_int32_t timeout)
3589{
3590 struct scsi_tape_read_position *scmd;
3591
3592 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3593 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
3594 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
3595 bzero(scmd, sizeof(*scmd));
3596 scmd->opcode = READ_POSITION;
3597 scmd->byte1 = hardsoft;
3598}
3599
3600/*
3601 * Set Tape Position command.
3602 */
3603void
3604scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries,
3605 void (*cbfcnp)(struct cam_periph *, union ccb *),
3606 u_int8_t tag_action, int hardsoft, u_int32_t blkno,
3607 u_int8_t sense_len, u_int32_t timeout)
3608{
3609 struct scsi_tape_locate *scmd;
3610
3611 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3612 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout);
3613 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
3614 bzero(scmd, sizeof(*scmd));
3615 scmd->opcode = LOCATE;
3616 if (hardsoft)
3617 scmd->byte1 |= SA_SPOS_BT;
3618 scsi_ulto4b(blkno, scmd->blkaddr);
3619}