<sys/vmmeter.h> need not be included twice.
[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 $
e4c9c0c8 3 * $DragonFly: src/sys/bus/cam/scsi/scsi_sa.c,v 1.12 2004/05/19 22:52:38 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>
05220613 40#ifdef _KERNEL
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41#include <sys/buf.h>
42#include <sys/malloc.h>
05220613 43#endif
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44#include <sys/mtio.h>
45#include <sys/conf.h>
05220613 46#ifdef _KERNEL
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47#include <sys/proc.h>
48#include <sys/buf2.h>
05220613 49#endif
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50#include <sys/devicestat.h>
51#include <machine/limits.h>
52
53#ifndef _KERNEL
54#include <stdio.h>
55#include <string.h>
56#endif
57
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58#include "../cam.h"
59#include "../cam_ccb.h"
60#include "../cam_extend.h"
61#include "../cam_periph.h"
62#include "../cam_xpt_periph.h"
63#include "../cam_debug.h"
984263bc 64
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65#include "scsi_all.h"
66#include "scsi_message.h"
67#include "scsi_sa.h"
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68
69#ifdef _KERNEL
70
71#include <opt_sa.h>
72
73#ifndef SA_IO_TIMEOUT
74#define SA_IO_TIMEOUT 4
75#endif
76#ifndef SA_SPACE_TIMEOUT
77#define SA_SPACE_TIMEOUT 1 * 60
78#endif
79#ifndef SA_REWIND_TIMEOUT
80#define SA_REWIND_TIMEOUT 2 * 60
81#endif
82#ifndef SA_ERASE_TIMEOUT
83#define SA_ERASE_TIMEOUT 4 * 60
84#endif
85
86#define SCSIOP_TIMEOUT (60 * 1000) /* not an option */
87
88#define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000)
89#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000)
90#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000)
91#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000)
92
93/*
94 * Additional options that can be set for config: SA_1FM_AT_EOT
95 */
96
97#ifndef UNUSED_PARAMETER
98#define UNUSED_PARAMETER(x) x = x
99#endif
100
101#define QFRLS(ccb) \
102 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \
103 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE)
104
105/*
106 * Driver states
107 */
108
109
110typedef enum {
111 SA_STATE_NORMAL, SA_STATE_ABNORMAL
112} sa_state;
113
114#define ccb_pflags ppriv_field0
115#define ccb_bp ppriv_ptr1
116
117#define SA_CCB_BUFFER_IO 0x0
118#define SA_CCB_WAITING 0x1
119#define SA_CCB_TYPEMASK 0x1
120#define SA_POSITION_UPDATED 0x2
121
122#define Set_CCB_Type(x, type) \
123 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \
124 x->ccb_h.ccb_pflags |= type
125
126#define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK)
127
128
129
130typedef enum {
131 SA_FLAG_OPEN = 0x0001,
132 SA_FLAG_FIXED = 0x0002,
133 SA_FLAG_TAPE_LOCKED = 0x0004,
134 SA_FLAG_TAPE_MOUNTED = 0x0008,
135 SA_FLAG_TAPE_WP = 0x0010,
136 SA_FLAG_TAPE_WRITTEN = 0x0020,
137 SA_FLAG_EOM_PENDING = 0x0040,
138 SA_FLAG_EIO_PENDING = 0x0080,
139 SA_FLAG_EOF_PENDING = 0x0100,
140 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
141 SA_FLAG_EOF_PENDING),
142 SA_FLAG_INVALID = 0x0200,
143 SA_FLAG_COMP_ENABLED = 0x0400,
144 SA_FLAG_COMP_SUPP = 0x0800,
145 SA_FLAG_COMP_UNSUPP = 0x1000,
146 SA_FLAG_TAPE_FROZEN = 0x2000
147} sa_flags;
148
149typedef enum {
150 SA_MODE_REWIND = 0x00,
151 SA_MODE_NOREWIND = 0x01,
152 SA_MODE_OFFLINE = 0x02
153} sa_mode;
154
155typedef enum {
156 SA_PARAM_NONE = 0x00,
157 SA_PARAM_BLOCKSIZE = 0x01,
158 SA_PARAM_DENSITY = 0x02,
159 SA_PARAM_COMPRESSION = 0x04,
160 SA_PARAM_BUFF_MODE = 0x08,
161 SA_PARAM_NUMBLOCKS = 0x10,
162 SA_PARAM_WP = 0x20,
163 SA_PARAM_SPEED = 0x40,
164 SA_PARAM_ALL = 0x7f
165} sa_params;
166
167typedef enum {
168 SA_QUIRK_NONE = 0x00,
169 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */
170 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */
171 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */
172 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */
173 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */
174 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */
175 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */
176 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */
177} sa_quirks;
178
179/* units are bits 4-7, 16-21 (1024 units) */
180#define SAUNIT(DEV) \
181 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16))
182
183#define SAMODE(z) ((minor(z) & 0x3))
184#define SADENSITY(z) (((minor(z) >> 2) & 0x3))
185#define SA_IS_CTRL(z) (minor(z) & (1 << 29))
186
187#define SA_NOT_CTLDEV 0
188#define SA_CTLDEV 1
189
190#define SA_ATYPE_R 0
191#define SA_ATYPE_NR 1
192#define SA_ATYPE_ER 2
193
194#define SAMINOR(ctl, unit, mode, access) \
195 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \
196 (mode << 0x2) | (access & 0x3))
197
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198#define SA_UNITMASK SAMINOR(0, -1, 0, 0)
199#define SA_UNIT(unit) SAMINOR(0, unit, 0, 0)
200
984263bc 201#define SA_NUM_MODES 4
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202
203struct sa_softc {
204 sa_state state;
205 sa_flags flags;
206 sa_quirks quirks;
207 struct buf_queue_head buf_queue;
208 int queue_count;
209 struct devstat device_stats;
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210 int blk_gran;
211 int blk_mask;
212 int blk_shift;
213 u_int32_t max_blk;
214 u_int32_t min_blk;
215 u_int32_t comp_algorithm;
216 u_int32_t saved_comp_algorithm;
217 u_int32_t media_blksize;
218 u_int32_t last_media_blksize;
219 u_int32_t media_numblks;
220 u_int8_t media_density;
221 u_int8_t speed;
222 u_int8_t scsi_rev;
223 u_int8_t dsreg; /* mtio mt_dsreg, redux */
224 int buffer_mode;
225 int filemarks;
226 union ccb saved_ccb;
227 int last_resid_was_io;
228
229 /*
230 * Relative to BOT Location.
231 */
232 daddr_t fileno;
233 daddr_t blkno;
234
235 /*
236 * Latched Error Info
237 */
238 struct {
239 struct scsi_sense_data _last_io_sense;
240 u_int32_t _last_io_resid;
241 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
242 struct scsi_sense_data _last_ctl_sense;
243 u_int32_t _last_ctl_resid;
244 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
245#define last_io_sense errinfo._last_io_sense
246#define last_io_resid errinfo._last_io_resid
247#define last_io_cdb errinfo._last_io_cdb
248#define last_ctl_sense errinfo._last_ctl_sense
249#define last_ctl_resid errinfo._last_ctl_resid
250#define last_ctl_cdb errinfo._last_ctl_cdb
251 } errinfo;
252 /*
253 * Misc other flags/state
254 */
255 u_int32_t
256 : 31,
257 ctrl_mode : 1; /* control device open */
258};
259
260struct sa_quirk_entry {
261 struct scsi_inquiry_pattern inq_pat; /* matching pattern */
262 sa_quirks quirks; /* specific quirk type */
263 u_int32_t prefblk; /* preferred blocksize when in fixed mode */
264};
265
266static struct sa_quirk_entry sa_quirk_table[] =
267{
268 {
269 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream",
270 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD |
271 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768
272 },
273 {
274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
275 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0
276 },
277 {
278 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
279 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0
280 },
281 {
282 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
283 "Python*", "*"}, SA_QUIRK_NODREAD, 0
284 },
285 {
286 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
287 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
288 },
289 {
290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
291 "VIPER 2525 25462", "-011"},
292 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0
293 },
294 {
295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
296 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
297 },
298#if 0
299 {
300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
301 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0,
302 },
303#endif
304 {
305 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
306 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
307 },
308 {
309 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
310 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
311 },
312 {
313 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
314 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
315 },
316 {
317 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
318 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
319 },
320 {
321 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
322 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
323 },
324 {
325 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
326 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
327 },
328 { /* jreynold@primenet.com */
329 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
330 "STT8000N*", "*"}, SA_QUIRK_1FM, 0
331 },
332 { /* mike@sentex.net */
333 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
334 "STT20000*", "*"}, SA_QUIRK_1FM, 0
335 },
336 {
337 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
338 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
339 },
340 {
341 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
342 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
343 },
344 {
345 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
346 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
347 },
348 {
349 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
350 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
351 },
352 {
353 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
354 " SLR*", "*"}, SA_QUIRK_1FM, 0
355 },
356 {
357 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
358 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
359 },
360 {
361 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
362 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
363 }
364};
365
366static d_open_t saopen;
367static d_close_t saclose;
368static d_strategy_t sastrategy;
369static d_ioctl_t saioctl;
370static periph_init_t sainit;
371static periph_ctor_t saregister;
372static periph_oninv_t saoninvalidate;
373static periph_dtor_t sacleanup;
374static periph_start_t sastart;
375static void saasync(void *callback_arg, u_int32_t code,
376 struct cam_path *path, void *arg);
377static void sadone(struct cam_periph *periph,
378 union ccb *start_ccb);
379static int saerror(union ccb *ccb, u_int32_t cam_flags,
380 u_int32_t sense_flags);
381static int samarkswanted(struct cam_periph *);
382static int sacheckeod(struct cam_periph *periph);
383static int sagetparams(struct cam_periph *periph,
384 sa_params params_to_get,
385 u_int32_t *blocksize, u_int8_t *density,
386 u_int32_t *numblocks, int *buff_mode,
387 u_int8_t *write_protect, u_int8_t *speed,
388 int *comp_supported, int *comp_enabled,
389 u_int32_t *comp_algorithm,
390 sa_comp_t *comp_page);
391static int sasetparams(struct cam_periph *periph,
392 sa_params params_to_set,
393 u_int32_t blocksize, u_int8_t density,
394 u_int32_t comp_algorithm,
395 u_int32_t sense_flags);
396static void saprevent(struct cam_periph *periph, int action);
397static int sarewind(struct cam_periph *periph);
398static int saspace(struct cam_periph *periph, int count,
399 scsi_space_code code);
400static int samount(struct cam_periph *, int, dev_t);
401static int saretension(struct cam_periph *periph);
402static int sareservereleaseunit(struct cam_periph *periph,
403 int reserve);
404static int saloadunload(struct cam_periph *periph, int load);
405static int saerase(struct cam_periph *periph, int longerase);
406static int sawritefilemarks(struct cam_periph *periph,
407 int nmarks, int setmarks);
408static int sardpos(struct cam_periph *periph, int, u_int32_t *);
409static int sasetpos(struct cam_periph *periph, int, u_int32_t *);
410
411
412static struct periph_driver sadriver =
413{
414 sainit, "sa",
415 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
416};
417
418DATA_SET(periphdriver_set, sadriver);
419
420/* For 2.2-stable support */
421#ifndef D_TAPE
422#define D_TAPE 0
423#endif
424
425#define SA_CDEV_MAJOR 14
426
427static struct cdevsw sa_cdevsw = {
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428 /* name */ "sa",
429 /* maj */ SA_CDEV_MAJOR,
430 /* flags */ D_TAPE,
431 /* port */ NULL,
455fcd7e 432 /* clone */ NULL,
fabb8ceb 433
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434 /* open */ saopen,
435 /* close */ saclose,
436 /* read */ physread,
437 /* write */ physwrite,
438 /* ioctl */ saioctl,
439 /* poll */ nopoll,
440 /* mmap */ nommap,
441 /* strategy */ sastrategy,
984263bc 442 /* dump */ nodump,
fabb8ceb 443 /* psize */ nopsize
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444};
445
446static struct extend_array *saperiphs;
447
448static int
41c20dac 449saopen(dev_t dev, int flags, int fmt, struct thread *td)
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450{
451 struct cam_periph *periph;
452 struct sa_softc *softc;
453 int unit;
454 int mode;
455 int density;
456 int error;
457 int s;
458
459 unit = SAUNIT(dev);
460 mode = SAMODE(dev);
461 density = SADENSITY(dev);
462
463 s = splsoftcam();
464 periph = cam_extend_get(saperiphs, unit);
465 if (periph == NULL) {
466 (void) splx(s);
467 return (ENXIO);
468 }
469 softc = (struct sa_softc *)periph->softc;
377d4740 470 if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
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471 splx(s);
472 return (error);
473 }
474 splx(s);
475
476 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
477 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
478
479 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
480 cam_periph_unlock(periph);
481 return (ENXIO);
482 }
483 if (SA_IS_CTRL(dev)) {
484 softc->ctrl_mode = 1;
485 cam_periph_unlock(periph);
486 return (0);
487 }
488
489
490 if (softc->flags & SA_FLAG_OPEN) {
491 error = EBUSY;
492 } else if (softc->flags & SA_FLAG_INVALID) {
493 error = ENXIO;
494 } else {
495 /*
496 * The function samount ensures media is loaded and ready.
497 * It also does a device RESERVE if the tape isn't yet mounted.
498 */
499 error = samount(periph, flags, dev);
500 }
501
502 if (error) {
503 cam_periph_release(periph);
504 } else {
505 saprevent(periph, PR_PREVENT);
506 softc->flags |= SA_FLAG_OPEN;
507 }
508 cam_periph_unlock(periph);
509 return (error);
510}
511
512static int
41c20dac 513saclose(dev_t dev, int flag, int fmt, struct thread *td)
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514{
515 struct cam_periph *periph;
516 struct sa_softc *softc;
517 int unit, mode, error, writing, tmp;
518 int closedbits = SA_FLAG_OPEN;
519
520 unit = SAUNIT(dev);
521 mode = SAMODE(dev);
522 periph = cam_extend_get(saperiphs, unit);
523 if (periph == NULL)
524 return (ENXIO);
525
526 softc = (struct sa_softc *)periph->softc;
527
528 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
529 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
530
531
377d4740 532 if ((error = cam_periph_lock(periph, 0)) != 0) {
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533 return (error);
534 }
535
536 if (SA_IS_CTRL(dev)) {
537 softc->ctrl_mode = 0;
538 cam_periph_release(periph);
539 cam_periph_unlock(periph);
540 return (0);
541 }
542
543 /*
544 * Were we writing the tape?
545 */
546 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0;
547
548 /*
549 * See whether or not we need to write filemarks. If this
550 * fails, we probably have to assume we've lost tape
551 * position.
552 */
553 error = sacheckeod(periph);
554 if (error) {
555 xpt_print_path(periph->path);
556 printf("failed to write terminating filemark(s)\n");
557 softc->flags |= SA_FLAG_TAPE_FROZEN;
558 }
559
560 /*
561 * Whatever we end up doing, allow users to eject tapes from here on.
562 */
563 saprevent(periph, PR_ALLOW);
564
565 /*
566 * Decide how to end...
567 */
568 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
569 closedbits |= SA_FLAG_TAPE_FROZEN;
570 } else switch (mode) {
571 case SA_MODE_OFFLINE:
572 /*
573 * An 'offline' close is an unconditional release of
574 * frozen && mount conditions, irrespective of whether
575 * these operations succeeded. The reason for this is
576 * to allow at least some kind of programmatic way
577 * around our state getting all fouled up. If somebody
578 * issues an 'offline' command, that will be allowed
579 * to clear state.
580 */
581 (void) sarewind(periph);
582 (void) saloadunload(periph, FALSE);
583 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN;
584 break;
585 case SA_MODE_REWIND:
586 /*
587 * If the rewind fails, return an error- if anyone cares,
588 * but not overwriting any previous error.
589 *
590 * We don't clear the notion of mounted here, but we do
591 * clear the notion of frozen if we successfully rewound.
592 */
593 tmp = sarewind(periph);
594 if (tmp) {
595 if (error != 0)
596 error = tmp;
597 } else {
598 closedbits |= SA_FLAG_TAPE_FROZEN;
599 }
600 break;
601 case SA_MODE_NOREWIND:
602 /*
603 * If we're not rewinding/unloading the tape, find out
604 * whether we need to back up over one of two filemarks
605 * we wrote (if we wrote two filemarks) so that appends
606 * from this point on will be sane.
607 */
608 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) {
609 tmp = saspace(periph, -1, SS_FILEMARKS);
610 if (tmp) {
611 xpt_print_path(periph->path);
612 printf("unable to backspace over one of double"
613 " filemarks at end of tape\n");
614 xpt_print_path(periph->path);
615 printf("it is possible that this device"
616 " needs a SA_QUIRK_1FM quirk set for it\n");
617 softc->flags |= SA_FLAG_TAPE_FROZEN;
618 }
619 }
620 break;
621 default:
622 xpt_print_path(periph->path);
623 panic("unknown mode 0x%x in saclose\n", mode);
624 /* NOTREACHED */
625 break;
626 }
627
628 /*
629 * We wish to note here that there are no more filemarks to be written.
630 */
631 softc->filemarks = 0;
632 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
633
634 /*
635 * And we are no longer open for business.
636 */
637 softc->flags &= ~closedbits;
638
639 /*
640 * Inform users if tape state if frozen....
641 */
642 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
643 xpt_print_path(periph->path);
644 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM "
645 "command to clear this state.\n");
646 }
647
648 /* release the device if it is no longer mounted */
649 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0)
650 sareservereleaseunit(periph, FALSE);
651
652 cam_periph_unlock(periph);
653 cam_periph_release(periph);
654
655 return (error);
656}
657
658/*
659 * Actually translate the requested transfer into one the physical driver
660 * can understand. The transfer is described by a buf and will include
661 * only one physical transfer.
662 */
663static void
664sastrategy(struct buf *bp)
665{
666 struct cam_periph *periph;
667 struct sa_softc *softc;
668 u_int unit;
669 int s;
670
671 if (SA_IS_CTRL(bp->b_dev)) {
672 bp->b_error = EINVAL;
673 goto bad;
674 }
675 unit = SAUNIT(bp->b_dev);
676 periph = cam_extend_get(saperiphs, unit);
677 if (periph == NULL) {
678 bp->b_error = ENXIO;
679 goto bad;
680 }
681 softc = (struct sa_softc *)periph->softc;
682
683 s = splsoftcam();
684
685 if (softc->flags & SA_FLAG_INVALID) {
686 splx(s);
687 bp->b_error = ENXIO;
688 goto bad;
689 }
690
691 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
692 splx(s);
693 bp->b_error = EPERM;
694 goto bad;
695 }
696
697 splx(s);
698
699 /*
700 * If it's a null transfer, return immediatly
701 */
702 if (bp->b_bcount == 0)
703 goto done;
704
705 /* valid request? */
706 if (softc->flags & SA_FLAG_FIXED) {
707 /*
708 * Fixed block device. The byte count must
709 * be a multiple of our block size.
710 */
711 if (((softc->blk_mask != ~0) &&
712 ((bp->b_bcount & softc->blk_mask) != 0)) ||
713 ((softc->blk_mask == ~0) &&
714 ((bp->b_bcount % softc->min_blk) != 0))) {
715 xpt_print_path(periph->path);
716 printf("Invalid request. Fixed block device "
717 "requests must be a multiple "
718 "of %d bytes\n", softc->media_blksize);
719 bp->b_error = EINVAL;
720 goto bad;
721 }
722 } else if ((bp->b_bcount > softc->max_blk) ||
723 (bp->b_bcount < softc->min_blk) ||
724 (bp->b_bcount & softc->blk_mask) != 0) {
725
726 xpt_print_path(periph->path);
727 printf("Invalid request. Variable block device "
728 "requests must be ");
729 if (softc->blk_mask != 0) {
730 printf("a multiple of %d ", (0x1 << softc->blk_gran));
731 }
732 printf("between %d and %d bytes\n", softc->min_blk,
733 softc->max_blk);
734 bp->b_error = EINVAL;
735 goto bad;
736 }
737
738 /*
739 * Mask interrupts so that the device cannot be invalidated until
740 * after we are in the queue. Otherwise, we might not properly
741 * clean up one of the buffers.
742 */
743 s = splbio();
744
745 /*
746 * Place it at the end of the queue.
747 */
748 bufq_insert_tail(&softc->buf_queue, bp);
749
750 softc->queue_count++;
751 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d "
752 "%s byte %s queue count now %d\n", (int) bp->b_bcount,
753 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
754 (bp->b_flags & B_READ)? "read" : "write", softc->queue_count));
755
756 splx(s);
757
758 /*
759 * Schedule ourselves for performing the work.
760 */
761 xpt_schedule(periph, 1);
762
763 return;
764bad:
765 bp->b_flags |= B_ERROR;
766done:
767
768 /*
769 * Correctly set the buf to indicate a completed xfer
770 */
771 bp->b_resid = bp->b_bcount;
772 biodone(bp);
773}
774
775static int
41c20dac 776saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
984263bc
MD
777{
778 struct cam_periph *periph;
779 struct sa_softc *softc;
780 scsi_space_code spaceop;
781 int didlockperiph = 0;
782 int s;
783 int unit;
784 int mode;
785 int density;
786 int error = 0;
787
788 unit = SAUNIT(dev);
789 mode = SAMODE(dev);
790 density = SADENSITY(dev);
791 error = 0; /* shut up gcc */
792 spaceop = 0; /* shut up gcc */
793
794 periph = cam_extend_get(saperiphs, unit);
795 if (periph == NULL)
796 return (ENXIO);
797
798 softc = (struct sa_softc *)periph->softc;
799
800 /*
801 * Check for control mode accesses. We allow MTIOCGET and
802 * MTIOCERRSTAT (but need to be the only one open in order
803 * to clear latched status), and MTSETBSIZE, MTSETDNSTY
804 * and MTCOMP (but need to be the only one accessing this
805 * device to run those).
806 */
807
808 if (SA_IS_CTRL(dev)) {
809 switch (cmd) {
810 case MTIOCGETEOTMODEL:
811 case MTIOCGET:
812 break;
813 case MTIOCERRSTAT:
814 /*
815 * If the periph isn't already locked, lock it
816 * so our MTIOCERRSTAT can reset latched error stats.
817 *
818 * If the periph is already locked, skip it because
819 * we're just getting status and it'll be up to the
820 * other thread that has this device open to do
821 * an MTIOCERRSTAT that would clear latched status.
822 */
823 s = splsoftcam();
824 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
377d4740 825 error = cam_periph_lock(periph, PCATCH);
984263bc
MD
826 if (error != 0) {
827 splx(s);
828 return (error);
829 }
830 didlockperiph = 1;
831 }
832 break;
833
834 case MTIOCSETEOTMODEL:
835 case MTSETBSIZ:
836 case MTSETDNSTY:
837 case MTCOMP:
838 /*
839 * We need to acquire the peripheral here rather
840 * than at open time because we are sharing writable
841 * access to data structures.
842 */
843 s = splsoftcam();
377d4740 844 error = cam_periph_lock(periph, PCATCH);
984263bc
MD
845 if (error != 0) {
846 splx(s);
847 return (error);
848 }
849 didlockperiph = 1;
850 break;
851
852 default:
853 return (EINVAL);
854 }
855 }
856
857 /*
858 * Find the device that the user is talking about
859 */
860 switch (cmd) {
861 case MTIOCGET:
862 {
863 struct mtget *g = (struct mtget *)arg;
864
865 /*
866 * If this isn't the control mode device, actually go out
867 * and ask the drive again what it's set to.
868 */
869 if (!SA_IS_CTRL(dev)) {
870 u_int8_t write_protect;
871 int comp_enabled, comp_supported;
872 error = sagetparams(periph, SA_PARAM_ALL,
873 &softc->media_blksize, &softc->media_density,
874 &softc->media_numblks, &softc->buffer_mode,
875 &write_protect, &softc->speed, &comp_supported,
876 &comp_enabled, &softc->comp_algorithm, NULL);
877 if (error)
878 break;
879 if (write_protect)
880 softc->flags |= SA_FLAG_TAPE_WP;
881 else
882 softc->flags &= ~SA_FLAG_TAPE_WP;
883 softc->flags &= ~(SA_FLAG_COMP_SUPP|
884 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP);
885 if (comp_supported) {
886 if (softc->saved_comp_algorithm == 0)
887 softc->saved_comp_algorithm =
888 softc->comp_algorithm;
889 softc->flags |= SA_FLAG_COMP_SUPP;
890 if (comp_enabled)
891 softc->flags |= SA_FLAG_COMP_ENABLED;
892 } else
893 softc->flags |= SA_FLAG_COMP_UNSUPP;
894 }
895 bzero(g, sizeof(struct mtget));
896 g->mt_type = MT_ISAR;
897 if (softc->flags & SA_FLAG_COMP_UNSUPP) {
898 g->mt_comp = MT_COMP_UNSUPP;
899 g->mt_comp0 = MT_COMP_UNSUPP;
900 g->mt_comp1 = MT_COMP_UNSUPP;
901 g->mt_comp2 = MT_COMP_UNSUPP;
902 g->mt_comp3 = MT_COMP_UNSUPP;
903 } else {
904 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
905 g->mt_comp = MT_COMP_DISABLED;
906 } else {
907 g->mt_comp = softc->comp_algorithm;
908 }
909 g->mt_comp0 = softc->comp_algorithm;
910 g->mt_comp1 = softc->comp_algorithm;
911 g->mt_comp2 = softc->comp_algorithm;
912 g->mt_comp3 = softc->comp_algorithm;
913 }
914 g->mt_density = softc->media_density;
915 g->mt_density0 = softc->media_density;
916 g->mt_density1 = softc->media_density;
917 g->mt_density2 = softc->media_density;
918 g->mt_density3 = softc->media_density;
919 g->mt_blksiz = softc->media_blksize;
920 g->mt_blksiz0 = softc->media_blksize;
921 g->mt_blksiz1 = softc->media_blksize;
922 g->mt_blksiz2 = softc->media_blksize;
923 g->mt_blksiz3 = softc->media_blksize;
924 g->mt_fileno = softc->fileno;
925 g->mt_blkno = softc->blkno;
926 g->mt_dsreg = (short) softc->dsreg;
927 /*
928 * Yes, we know that this is likely to overflow
929 */
930 if (softc->last_resid_was_io) {
931 if ((g->mt_resid = (short) softc->last_io_resid) != 0) {
932 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
933 softc->last_io_resid = 0;
934 }
935 }
936 } else {
937 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) {
938 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
939 softc->last_ctl_resid = 0;
940 }
941 }
942 }
943 error = 0;
944 break;
945 }
946 case MTIOCERRSTAT:
947 {
948 struct scsi_tape_errors *sep =
949 &((union mterrstat *)arg)->scsi_errstat;
950
951 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
952 ("saioctl: MTIOCERRSTAT\n"));
953
954 bzero(sep, sizeof(*sep));
955 sep->io_resid = softc->last_io_resid;
956 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
957 sizeof (sep->io_sense));
958 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
959 sizeof (sep->io_cdb));
960 sep->ctl_resid = softc->last_ctl_resid;
961 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
962 sizeof (sep->ctl_sense));
963 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
964 sizeof (sep->ctl_cdb));
965
966 if (SA_IS_CTRL(dev) == 0 || didlockperiph)
967 bzero((caddr_t) &softc->errinfo,
968 sizeof (softc->errinfo));
969 error = 0;
970 break;
971 }
972 case MTIOCTOP:
973 {
974 struct mtop *mt;
975 int count;
976
977 mt = (struct mtop *)arg;
978
979 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
980 ("saioctl: op=0x%x count=0x%x\n",
981 mt->mt_op, mt->mt_count));
982
983 count = mt->mt_count;
984 switch (mt->mt_op) {
985 case MTWEOF: /* write an end-of-file marker */
986 /*
987 * We don't need to clear the SA_FLAG_TAPE_WRITTEN
988 * flag because by keeping track of filemarks
989 * we have last written we know ehether or not
990 * we need to write more when we close the device.
991 */
992 error = sawritefilemarks(periph, count, FALSE);
993 break;
994 case MTWSS: /* write a setmark */
995 error = sawritefilemarks(periph, count, TRUE);
996 break;
997 case MTBSR: /* backward space record */
998 case MTFSR: /* forward space record */
999 case MTBSF: /* backward space file */
1000 case MTFSF: /* forward space file */
1001 case MTBSS: /* backward space setmark */
1002 case MTFSS: /* forward space setmark */
1003 case MTEOD: /* space to end of recorded medium */
1004 {
1005 int nmarks;
1006
1007 spaceop = SS_FILEMARKS;
1008 nmarks = softc->filemarks;
1009 error = sacheckeod(periph);
1010 if (error) {
1011 xpt_print_path(periph->path);
1012 printf("EOD check prior to spacing failed\n");
1013 softc->flags |= SA_FLAG_EIO_PENDING;
1014 break;
1015 }
1016 nmarks -= softc->filemarks;
1017 switch(mt->mt_op) {
1018 case MTBSR:
1019 count = -count;
1020 /* FALLTHROUGH */
1021 case MTFSR:
1022 spaceop = SS_BLOCKS;
1023 break;
1024 case MTBSF:
1025 count = -count;
1026 /* FALLTHROUGH */
1027 case MTFSF:
1028 break;
1029 case MTBSS:
1030 count = -count;
1031 /* FALLTHROUGH */
1032 case MTFSS:
1033 spaceop = SS_SETMARKS;
1034 break;
1035 case MTEOD:
1036 spaceop = SS_EOD;
1037 count = 0;
1038 nmarks = 0;
1039 break;
1040 default:
1041 error = EINVAL;
1042 break;
1043 }
1044 if (error)
1045 break;
1046
1047 nmarks = softc->filemarks;
1048 /*
1049 * XXX: Why are we checking again?
1050 */
1051 error = sacheckeod(periph);
1052 if (error)
1053 break;
1054 nmarks -= softc->filemarks;
1055 error = saspace(periph, count - nmarks, spaceop);
1056 /*
1057 * At this point, clear that we've written the tape
1058 * and that we've written any filemarks. We really
1059 * don't know what the applications wishes to do next-
1060 * the sacheckeod's will make sure we terminated the
1061 * tape correctly if we'd been writing, but the next
1062 * action the user application takes will set again
1063 * whether we need to write filemarks.
1064 */
1065 softc->flags &=
1066 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1067 softc->filemarks = 0;
1068 break;
1069 }
1070 case MTREW: /* rewind */
1071 (void) sacheckeod(periph);
1072 error = sarewind(periph);
1073 /* see above */
1074 softc->flags &=
1075 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1076 softc->flags &= ~SA_FLAG_ERR_PENDING;
1077 softc->filemarks = 0;
1078 break;
1079 case MTERASE: /* erase */
1080 error = saerase(periph, count);
1081 softc->flags &=
1082 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1083 softc->flags &= ~SA_FLAG_ERR_PENDING;
1084 break;
1085 case MTRETENS: /* re-tension tape */
1086 error = saretension(periph);
1087 softc->flags &=
1088 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1089 softc->flags &= ~SA_FLAG_ERR_PENDING;
1090 break;
1091 case MTOFFL: /* rewind and put the drive offline */
1092
1093 (void) sacheckeod(periph);
1094 /* see above */
1095 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
1096 softc->filemarks = 0;
1097
1098 error = sarewind(periph);
1099 /* clear the frozen flag anyway */
1100 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1101
1102 /*
1103 * Be sure to allow media removal before ejecting.
1104 */
1105
1106 saprevent(periph, PR_ALLOW);
1107 if (error == 0) {
1108 error = saloadunload(periph, FALSE);
1109 if (error == 0) {
1110 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1111 }
1112 }
1113 break;
1114
1115 case MTNOP: /* no operation, sets status only */
1116 case MTCACHE: /* enable controller cache */
1117 case MTNOCACHE: /* disable controller cache */
1118 error = 0;
1119 break;
1120
1121 case MTSETBSIZ: /* Set block size for device */
1122
1123 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count,
1124 0, 0, 0);
1125 if (error == 0) {
1126 softc->last_media_blksize =
1127 softc->media_blksize;
1128 softc->media_blksize = count;
1129 if (count) {
1130 softc->flags |= SA_FLAG_FIXED;
1131 if (powerof2(count)) {
1132 softc->blk_shift =
1133 ffs(count) - 1;
1134 softc->blk_mask = count - 1;
1135 } else {
1136 softc->blk_mask = ~0;
1137 softc->blk_shift = 0;
1138 }
1139 /*
1140 * Make the user's desire 'persistent'.
1141 */
1142 softc->quirks &= ~SA_QUIRK_VARIABLE;
1143 softc->quirks |= SA_QUIRK_FIXED;
1144 } else {
1145 softc->flags &= ~SA_FLAG_FIXED;
1146 if (softc->max_blk == 0) {
1147 softc->max_blk = ~0;
1148 }
1149 softc->blk_shift = 0;
1150 if (softc->blk_gran != 0) {
1151 softc->blk_mask =
1152 softc->blk_gran - 1;
1153 } else {
1154 softc->blk_mask = 0;
1155 }
1156 /*
1157 * Make the user's desire 'persistent'.
1158 */
1159 softc->quirks |= SA_QUIRK_VARIABLE;
1160 softc->quirks &= ~SA_QUIRK_FIXED;
1161 }
1162 }
1163 break;
1164 case MTSETDNSTY: /* Set density for device and mode */
1165 if (count > UCHAR_MAX) {
1166 error = EINVAL;
1167 break;
1168 } else {
1169 error = sasetparams(periph, SA_PARAM_DENSITY,
1170 0, count, 0, 0);
1171 }
1172 break;
1173 case MTCOMP: /* enable compression */
1174 /*
1175 * Some devices don't support compression, and
1176 * don't like it if you ask them for the
1177 * compression page.
1178 */
1179 if ((softc->quirks & SA_QUIRK_NOCOMP) ||
1180 (softc->flags & SA_FLAG_COMP_UNSUPP)) {
1181 error = ENODEV;
1182 break;
1183 }
1184 error = sasetparams(periph, SA_PARAM_COMPRESSION,
1185 0, 0, count, SF_NO_PRINT);
1186 break;
1187 default:
1188 error = EINVAL;
1189 }
1190 break;
1191 }
1192 case MTIOCIEOT:
1193 case MTIOCEEOT:
1194 error = 0;
1195 break;
1196 case MTIOCRDSPOS:
1197 error = sardpos(periph, 0, (u_int32_t *) arg);
1198 break;
1199 case MTIOCRDHPOS:
1200 error = sardpos(periph, 1, (u_int32_t *) arg);
1201 break;
1202 case MTIOCSLOCATE:
1203 error = sasetpos(periph, 0, (u_int32_t *) arg);
1204 break;
1205 case MTIOCHLOCATE:
1206 error = sasetpos(periph, 1, (u_int32_t *) arg);
1207 break;
1208 case MTIOCGETEOTMODEL:
1209 error = 0;
1210 if (softc->quirks & SA_QUIRK_1FM)
1211 mode = 1;
1212 else
1213 mode = 2;
1214 *((u_int32_t *) arg) = mode;
1215 break;
1216 case MTIOCSETEOTMODEL:
1217 error = 0;
1218 switch (*((u_int32_t *) arg)) {
1219 case 1:
1220 softc->quirks &= ~SA_QUIRK_2FM;
1221 softc->quirks |= SA_QUIRK_1FM;
1222 break;
1223 case 2:
1224 softc->quirks &= ~SA_QUIRK_1FM;
1225 softc->quirks |= SA_QUIRK_2FM;
1226 break;
1227 default:
1228 error = EINVAL;
1229 break;
1230 }
1231 break;
1232 default:
1233 error = cam_periph_ioctl(periph, cmd, arg, saerror);
1234 break;
1235 }
1236
1237 /*
1238 * Check to see if we cleared a frozen state
1239 */
1240 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) {
1241 switch(cmd) {
1242 case MTIOCRDSPOS:
1243 case MTIOCRDHPOS:
1244 case MTIOCSLOCATE:
1245 case MTIOCHLOCATE:
1246 softc->fileno = (daddr_t) -1;
1247 softc->blkno = (daddr_t) -1;
1248 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1249 xpt_print_path(periph->path);
1250 printf("tape state now unfrozen.\n");
1251 break;
1252 default:
1253 break;
1254 }
1255 }
1256 if (didlockperiph) {
1257 cam_periph_unlock(periph);
1258 }
1259 return (error);
1260}
1261
1262static void
1263sainit(void)
1264{
1265 cam_status status;
1266 struct cam_path *path;
1267
1268 /*
1269 * Create our extend array for storing the devices we attach to.
1270 */
1271 saperiphs = cam_extend_new();
1272 if (saperiphs == NULL) {
1273 printf("sa: Failed to alloc extend array!\n");
1274 return;
1275 }
1276
1277 /*
1278 * Install a global async callback.
1279 */
1280 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1281 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1282
1283 if (status == CAM_REQ_CMP) {
1284 /* Register the async callbacks of interrest */
1285 struct ccb_setasync csa; /*
1286 * This is an immediate CCB,
1287 * so using the stack is OK
1288 */
1289 xpt_setup_ccb(&csa.ccb_h, path, 5);
1290 csa.ccb_h.func_code = XPT_SASYNC_CB;
1291 csa.event_enable = AC_FOUND_DEVICE;
1292 csa.callback = saasync;
1293 csa.callback_arg = NULL;
1294 xpt_action((union ccb *)&csa);
1295 status = csa.ccb_h.status;
1296 xpt_free_path(path);
1297 }
1298
1299 if (status != CAM_REQ_CMP) {
1300 printf("sa: Failed to attach master async callback "
1301 "due to status 0x%x!\n", status);
1302 }
1303}
1304
1305static void
1306saoninvalidate(struct cam_periph *periph)
1307{
1308 struct sa_softc *softc;
1309 struct buf *q_bp;
1310 struct ccb_setasync csa;
1311 int s;
1312
1313 softc = (struct sa_softc *)periph->softc;
1314
1315 /*
1316 * De-register any async callbacks.
1317 */
1318 xpt_setup_ccb(&csa.ccb_h, periph->path,
1319 /* priority */ 5);
1320 csa.ccb_h.func_code = XPT_SASYNC_CB;
1321 csa.event_enable = 0;
1322 csa.callback = saasync;
1323 csa.callback_arg = periph;
1324 xpt_action((union ccb *)&csa);
1325
1326 softc->flags |= SA_FLAG_INVALID;
1327
1328 /*
1329 * Although the oninvalidate() routines are always called at
1330 * splsoftcam, we need to be at splbio() here to keep the buffer
1331 * queue from being modified while we traverse it.
1332 */
1333 s = splbio();
1334
1335 /*
1336 * Return all queued I/O with ENXIO.
1337 * XXX Handle any transactions queued to the card
1338 * with XPT_ABORT_CCB.
1339 */
1340 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1341 bufq_remove(&softc->buf_queue, q_bp);
1342 q_bp->b_resid = q_bp->b_bcount;
1343 q_bp->b_error = ENXIO;
1344 q_bp->b_flags |= B_ERROR;
1345 biodone(q_bp);
1346 }
1347 softc->queue_count = 0;
1348 splx(s);
1349
1350 xpt_print_path(periph->path);
1351 printf("lost device\n");
1352
1353}
1354
1355static void
1356sacleanup(struct cam_periph *periph)
1357{
1358 struct sa_softc *softc;
984263bc
MD
1359
1360 softc = (struct sa_softc *)periph->softc;
1361
1362 devstat_remove_entry(&softc->device_stats);
1363
984263bc
MD
1364 cam_extend_release(saperiphs, periph->unit_number);
1365 xpt_print_path(periph->path);
1366 printf("removing device entry\n");
e4c9c0c8 1367 cdevsw_remove(&sa_cdevsw, SA_UNITMASK, SA_UNIT(periph->unit_number));
984263bc
MD
1368 free(softc, M_DEVBUF);
1369}
1370
1371static void
1372saasync(void *callback_arg, u_int32_t code,
1373 struct cam_path *path, void *arg)
1374{
1375 struct cam_periph *periph;
1376
1377 periph = (struct cam_periph *)callback_arg;
1378 switch (code) {
1379 case AC_FOUND_DEVICE:
1380 {
1381 struct ccb_getdev *cgd;
1382 cam_status status;
1383
1384 cgd = (struct ccb_getdev *)arg;
1385 if (cgd == NULL)
1386 break;
1387
1388 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
1389 break;
1390
1391 /*
1392 * Allocate a peripheral instance for
1393 * this device and start the probe
1394 * process.
1395 */
1396 status = cam_periph_alloc(saregister, saoninvalidate,
1397 sacleanup, sastart,
1398 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
1399 saasync, AC_FOUND_DEVICE, cgd);
1400
1401 if (status != CAM_REQ_CMP
1402 && status != CAM_REQ_INPROG)
1403 printf("saasync: Unable to probe new device "
1404 "due to status 0x%x\n", status);
1405 break;
1406 }
1407 default:
1408 cam_periph_async(periph, code, path, arg);
1409 break;
1410 }
1411}
1412
1413static cam_status
1414saregister(struct cam_periph *periph, void *arg)
1415{
1416 struct sa_softc *softc;
1417 struct ccb_setasync csa;
1418 struct ccb_getdev *cgd;
1419 caddr_t match;
1420 int i;
1421
1422 cgd = (struct ccb_getdev *)arg;
1423 if (periph == NULL) {
1424 printf("saregister: periph was NULL!!\n");
1425 return (CAM_REQ_CMP_ERR);
1426 }
1427
1428 if (cgd == NULL) {
1429 printf("saregister: no getdev CCB, can't register device\n");
1430 return (CAM_REQ_CMP_ERR);
1431 }
1432
ad86f6b6 1433 softc = malloc(sizeof (*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
984263bc
MD
1434 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
1435 softc->state = SA_STATE_NORMAL;
1436 softc->fileno = (daddr_t) -1;
1437 softc->blkno = (daddr_t) -1;
1438
1439 bufq_init(&softc->buf_queue);
1440 periph->softc = softc;
1441 cam_extend_set(saperiphs, periph->unit_number, periph);
1442
1443 /*
1444 * See if this device has any quirks.
1445 */
1446 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1447 (caddr_t)sa_quirk_table,
1448 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
1449 sizeof(*sa_quirk_table), scsi_inquiry_match);
1450
1451 if (match != NULL) {
1452 softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
1453 softc->last_media_blksize =
1454 ((struct sa_quirk_entry *)match)->prefblk;
1455#ifdef CAMDEBUG
1456 xpt_print_path(periph->path);
1457 printf("found quirk entry %d\n", (int)
1458 (((struct sa_quirk_entry *) match) - sa_quirk_table));
1459#endif
1460 } else
1461 softc->quirks = SA_QUIRK_NONE;
1462
1463 /*
1464 * The SA driver supports a blocksize, but we don't know the
1465 * blocksize until we media is inserted. So, set a flag to
1466 * indicate that the blocksize is unavailable right now.
1467 */
1468 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0,
1469 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
1470 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE);
1471
e4c9c0c8
MD
1472 cdevsw_add(&sa_cdevsw, SA_UNITMASK, SA_UNIT(periph->unit_number));
1473 make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV,
984263bc
MD
1474 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1475 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number);
1476
e4c9c0c8 1477 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV,
984263bc
MD
1478 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1479 0660, "r%s%d", periph->periph_name, periph->unit_number);
1480
e4c9c0c8 1481 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV,
984263bc
MD
1482 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR,
1483 0660, "nr%s%d", periph->periph_name, periph->unit_number);
1484
e4c9c0c8 1485 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV,
984263bc
MD
1486 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR,
1487 0660, "er%s%d", periph->periph_name, periph->unit_number);
1488
1489 for (i = 0; i < SA_NUM_MODES; i++) {
1490
e4c9c0c8 1491 make_dev(&sa_cdevsw,
984263bc
MD
1492 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R),
1493 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d",
1494 periph->periph_name, periph->unit_number, i);
1495
e4c9c0c8 1496 make_dev(&sa_cdevsw,
984263bc
MD
1497 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR),
1498 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d",
1499 periph->periph_name, periph->unit_number, i);
1500
1501
e4c9c0c8 1502 make_dev(&sa_cdevsw,
984263bc
MD
1503 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER),
1504 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d",
1505 periph->periph_name, periph->unit_number, i);
1506 }
1507
1508 /*
1509 * Add an async callback so that we get
1510 * notified if this device goes away.
1511 */
1512 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5);
1513 csa.ccb_h.func_code = XPT_SASYNC_CB;
1514 csa.event_enable = AC_LOST_DEVICE;
1515 csa.callback = saasync;
1516 csa.callback_arg = periph;
1517 xpt_action((union ccb *)&csa);
1518
1519 xpt_announce_periph(periph, NULL);
1520
1521 return (CAM_REQ_CMP);
1522}
1523
1524static void
1525sastart(struct cam_periph *periph, union ccb *start_ccb)
1526{
1527 struct sa_softc *softc;
1528
1529 softc = (struct sa_softc *)periph->softc;
1530
1531 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart"));
1532
1533
1534 switch (softc->state) {
1535 case SA_STATE_NORMAL:
1536 {
1537 /* Pull a buffer from the queue and get going on it */
1538 struct buf *bp;
1539 int s;
1540
1541 /*
1542 * See if there is a buf with work for us to do..
1543 */
1544 s = splbio();
1545 bp = bufq_first(&softc->buf_queue);
1546 if (periph->immediate_priority <= periph->pinfo.priority) {
1547 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1548 ("queuing for immediate ccb\n"));
1549 Set_CCB_Type(start_ccb, SA_CCB_WAITING);
1550 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1551 periph_links.sle);
1552 periph->immediate_priority = CAM_PRIORITY_NONE;
1553 splx(s);
1554 wakeup(&periph->ccb_list);
1555 } else if (bp == NULL) {
1556 splx(s);
1557 xpt_release_ccb(start_ccb);
1558 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) {
1559 struct buf *done_bp;
1560again:
1561 softc->queue_count--;
1562 bufq_remove(&softc->buf_queue, bp);
1563 bp->b_resid = bp->b_bcount;
1564 done_bp = bp;
1565 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
1566 /*
1567 * We now just clear errors in this case
1568 * and let the residual be the notifier.
1569 */
1570 bp->b_error = 0;
1571 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
1572 /*
1573 * This can only happen if we're reading
1574 * in fixed length mode. In this case,
1575 * we dump the rest of the list the
1576 * same way.
1577 */
1578 bp->b_error = 0;
1579 if (bufq_first(&softc->buf_queue) != NULL) {
1580 biodone(done_bp);
1581 goto again;
1582 }
1583 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
1584 bp->b_error = EIO;
1585 bp->b_flags |= B_ERROR;
1586 }
1587 bp = bufq_first(&softc->buf_queue);
1588 /*
1589 * Only if we have no other buffers queued up
1590 * do we clear the pending error flag.
1591 */
1592 if (bp == NULL)
1593 softc->flags &= ~SA_FLAG_ERR_PENDING;
1594 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1595 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, "
1596 "%d more buffers queued up\n",
1597 (softc->flags & SA_FLAG_ERR_PENDING),
1598 (bp != NULL)? "not " : " ", softc->queue_count));
1599 splx(s);
1600 xpt_release_ccb(start_ccb);
1601 biodone(done_bp);
1602 } else {
1603 u_int32_t length;
1604
1605 bufq_remove(&softc->buf_queue, bp);
1606 softc->queue_count--;
1607
1608 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1609 if (softc->blk_shift != 0) {
1610 length =
1611 bp->b_bcount >> softc->blk_shift;
1612 } else if (softc->media_blksize != 0) {
1613 length =
1614 bp->b_bcount / softc->media_blksize;
1615 } else {
1616 bp->b_error = EIO;
1617 xpt_print_path(periph->path);
1618 printf("zero blocksize for "
1619 "FIXED length writes?\n");
1620 splx(s);
1621 biodone(bp);
1622 break;
1623 }
1624 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1625 ("Fixed Record Count is %d\n", length));
1626 } else {
1627 length = bp->b_bcount;
1628 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1629 ("Variable Record Count is %d\n", length));
1630 }
1631 devstat_start_transaction(&softc->device_stats);
1632 /*
1633 * Some people have theorized that we should
1634 * suppress illegal length indication if we are
1635 * running in variable block mode so that we don't
1636 * have to request sense every time our requested
1637 * block size is larger than the written block.
1638 * The residual information from the ccb allows
1639 * us to identify this situation anyway. The only
1640 * problem with this is that we will not get
1641 * information about blocks that are larger than
1642 * our read buffer unless we set the block size
1643 * in the mode page to something other than 0.
1644 *
1645 * I believe that this is a non-issue. If user apps
1646 * don't adjust their read size to match our record
1647 * size, that's just life. Anyway, the typical usage
1648 * would be to issue, e.g., 64KB reads and occasionally
1649 * have to do deal with 512 byte or 1KB intermediate
1650 * records.
1651 */
1652 softc->dsreg = (bp->b_flags & B_READ)?
1653 MTIO_DSREG_RD : MTIO_DSREG_WR;
1654 scsi_sa_read_write(&start_ccb->csio, 0, sadone,
1655 MSG_SIMPLE_Q_TAG, (bp->b_flags & B_READ) != 0,
1656 FALSE, (softc->flags & SA_FLAG_FIXED) != 0,
1657 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE,
1658 IO_TIMEOUT);
1659 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
1660 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO);
1661 start_ccb->ccb_h.ccb_bp = bp;
1662 bp = bufq_first(&softc->buf_queue);
1663 splx(s);
1664 xpt_action(start_ccb);
1665 }
1666
1667 if (bp != NULL) {
1668 /* Have more work to do, so ensure we stay scheduled */
1669 xpt_schedule(periph, 1);
1670 }
1671 break;
1672 }
1673 case SA_STATE_ABNORMAL:
1674 default:
1675 panic("state 0x%x in sastart", softc->state);
1676 break;
1677 }
1678}
1679
1680
1681static void
1682sadone(struct cam_periph *periph, union ccb *done_ccb)
1683{
1684 struct sa_softc *softc;
1685 struct ccb_scsiio *csio;
1686
1687 softc = (struct sa_softc *)periph->softc;
1688 csio = &done_ccb->csio;
1689 switch (CCB_Type(csio)) {
1690 case SA_CCB_BUFFER_IO:
1691 {
1692 struct buf *bp;
1693 int error;
1694
1695 softc->dsreg = MTIO_DSREG_REST;
1696 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1697 error = 0;
1698 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1699 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
1700 /*
1701 * A retry was scheduled, so just return.
1702 */
1703 return;
1704 }
1705 }
1706
1707 if (error == EIO) {
1708 int s;
1709 struct buf *q_bp;
1710
1711 /*
1712 * Catastrophic error. Mark the tape as frozen
1713 * (we no longer know tape position).
1714 *
1715 * Return all queued I/O with EIO, and unfreeze
1716 * our queue so that future transactions that
1717 * attempt to fix this problem can get to the
1718 * device.
1719 *
1720 */
1721
1722 s = splbio();
1723 softc->flags |= SA_FLAG_TAPE_FROZEN;
1724 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) {
1725 bufq_remove(&softc->buf_queue, q_bp);
1726 q_bp->b_resid = q_bp->b_bcount;
1727 q_bp->b_error = EIO;
1728 q_bp->b_flags |= B_ERROR;
1729 biodone(q_bp);
1730 }
1731 splx(s);
1732 }
1733 if (error != 0) {
1734 bp->b_resid = bp->b_bcount;
1735 bp->b_error = error;
1736 bp->b_flags |= B_ERROR;
1737 /*
1738 * In the error case, position is updated in saerror.
1739 */
1740 } else {
1741 bp->b_resid = csio->resid;
1742 bp->b_error = 0;
1743 if (csio->resid != 0) {
1744 bp->b_flags |= B_ERROR;
1745 }
1746 if ((bp->b_flags & B_READ) == 0) {
1747 softc->flags |= SA_FLAG_TAPE_WRITTEN;
1748 softc->filemarks = 0;
1749 }
1750 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
1751 (softc->blkno != (daddr_t) -1)) {
1752 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1753 u_int32_t l;
1754 if (softc->blk_shift != 0) {
1755 l = bp->b_bcount >>
1756 softc->blk_shift;
1757 } else {
1758 l = bp->b_bcount /
1759 softc->media_blksize;
1760 }
1761 softc->blkno += (daddr_t) l;
1762 } else {
1763 softc->blkno++;
1764 }
1765 }
1766 }
1767 /*
1768 * If we had an error (immediate or pending),
1769 * release the device queue now.
1770 */
1771 if (error || (softc->flags & SA_FLAG_ERR_PENDING))
1772 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1773#ifdef CAMDEBUG
1774 if (error || bp->b_resid) {
1775 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1776 ("error %d resid %ld count %ld\n", error,
1777 bp->b_resid, bp->b_bcount));
1778 }
1779#endif
1780 devstat_end_transaction_buf(&softc->device_stats, bp);
1781 biodone(bp);
1782 break;
1783 }
1784 case SA_CCB_WAITING:
1785 {
1786 /* Caller will release the CCB */
1787 wakeup(&done_ccb->ccb_h.cbfcnp);
1788 return;
1789 }
1790 }
1791 xpt_release_ccb(done_ccb);
1792}
1793
1794/*
1795 * Mount the tape (make sure it's ready for I/O).
1796 */
1797static int
1798samount(struct cam_periph *periph, int oflags, dev_t dev)
1799{
1800 struct sa_softc *softc;
1801 union ccb *ccb;
1802 int error;
1803
1804 /*
1805 * oflags can be checked for 'kind' of open (read-only check) - later
1806 * dev can be checked for a control-mode or compression open - later
1807 */
1808 UNUSED_PARAMETER(oflags);
1809 UNUSED_PARAMETER(dev);
1810
1811
1812 softc = (struct sa_softc *)periph->softc;
1813
1814 /*
1815 * This should determine if something has happend since the last
1816 * open/mount that would invalidate the mount. We do *not* want
1817 * to retry this command- we just want the status. But we only
1818 * do this if we're mounted already- if we're not mounted,
1819 * we don't care about the unit read state and can instead use
1820 * this opportunity to attempt to reserve the tape unit.
1821 */
1822
1823 if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
1824 ccb = cam_periph_getccb(periph, 1);
1825 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1826 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1827 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1828 &softc->device_stats);
1829 QFRLS(ccb);
1830 if (error == ENXIO) {
1831 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1832 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1833 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1834 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1835 &softc->device_stats);
1836 QFRLS(ccb);
1837 } else if (error) {
1838 /*
1839 * We don't need to freeze the tape because we
1840 * will now attempt to rewind/load it.
1841 */
1842 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1843 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) {
1844 xpt_print_path(ccb->ccb_h.path);
1845 printf("error %d on TUR in samount\n", error);
1846 }
1847 }
1848 } else {
1849 error = sareservereleaseunit(periph, TRUE);
1850 if (error) {
1851 return (error);
1852 }
1853 ccb = cam_periph_getccb(periph, 1);
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 }
1860
1861 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
1862 struct scsi_read_block_limits_data *rblim = NULL;
1863 int comp_enabled, comp_supported;
1864 u_int8_t write_protect, guessing = 0;
1865
1866 /*
1867 * Clear out old state.
1868 */
1869 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
1870 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
1871 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP);
1872 softc->filemarks = 0;
1873
1874 /*
1875 * *Very* first off, make sure we're loaded to BOT.
1876 */
1877 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
1878 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
1879 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1880 &softc->device_stats);
1881 QFRLS(ccb);
1882
1883 /*
1884 * In case this doesn't work, do a REWIND instead
1885 */
1886 if (error) {
1887 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
1888 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1889 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1890 &softc->device_stats);
1891 QFRLS(ccb);
1892 }
1893 if (error) {
1894 xpt_release_ccb(ccb);
1895 goto exit;
1896 }
1897
1898 /*
1899 * Do a dummy test read to force access to the
1900 * media so that the drive will really know what's
1901 * there. We actually don't really care what the
1902 * blocksize on tape is and don't expect to really
1903 * read a full record.
1904 */
898d961b 1905 rblim = malloc(8192, M_TEMP, M_INTWAIT);
984263bc
MD
1906
1907 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
1908 scsi_sa_read_write(&ccb->csio, 0, sadone,
1909 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
1910 (void *) rblim, 8192, SSD_FULL_SIZE,
1911 IO_TIMEOUT);
1912 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1913 &softc->device_stats);
1914 QFRLS(ccb);
1915 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
1916 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1917 error = cam_periph_runccb(ccb, saerror, 0,
1918 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA,
1919 &softc->device_stats);
1920 QFRLS(ccb);
1921 if (error) {
1922 xpt_print_path(ccb->ccb_h.path);
1923 printf("unable to rewind after test read\n");
1924 xpt_release_ccb(ccb);
1925 goto exit;
1926 }
1927 }
1928
1929 /*
1930 * Next off, determine block limits.
1931 */
1932 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
1933 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
1934
1935 error = cam_periph_runccb(ccb, saerror, 0,
1936 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO,
1937 &softc->device_stats);
1938 QFRLS(ccb);
1939 xpt_release_ccb(ccb);
1940
1941 if (error != 0) {
1942 /*
1943 * If it's less than SCSI-2, READ BLOCK LIMITS is not
1944 * a MANDATORY command. Anyway- it doesn't matter-
1945 * we can proceed anyway.
1946 */
1947 softc->blk_gran = 0;
1948 softc->max_blk = ~0;
1949 softc->min_blk = 0;
1950 } else {
1951 if (softc->scsi_rev >= SCSI_REV_3) {
1952 softc->blk_gran = RBL_GRAN(rblim);
1953 } else {
1954 softc->blk_gran = 0;
1955 }
1956 /*
1957 * We take max_blk == min_blk to mean a default to
1958 * fixed mode- but note that whatever we get out of
1959 * sagetparams below will actually determine whether
1960 * we are actually *in* fixed mode.
1961 */
1962 softc->max_blk = scsi_3btoul(rblim->maximum);
1963 softc->min_blk = scsi_2btoul(rblim->minimum);
1964
1965
1966 }
1967 /*
1968 * Next, perform a mode sense to determine
1969 * current density, blocksize, compression etc.
1970 */
1971 error = sagetparams(periph, SA_PARAM_ALL,
1972 &softc->media_blksize,
1973 &softc->media_density,
1974 &softc->media_numblks,
1975 &softc->buffer_mode, &write_protect,
1976 &softc->speed, &comp_supported,
1977 &comp_enabled, &softc->comp_algorithm,
1978 NULL);
1979
1980 if (error != 0) {
1981 /*
1982 * We could work a little harder here. We could
1983 * adjust our attempts to get information. It
1984 * might be an ancient tape drive. If someone
1985 * nudges us, we'll do that.
1986 */
1987 goto exit;
1988 }
1989
1990 /*
1991 * If no quirk has determined that this is a device that is
1992 * preferred to be in fixed or variable mode, now is the time
1993 * to find out.
1994 */
1995 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
1996 guessing = 1;
1997 /*
1998 * This could be expensive to find out. Luckily we
1999 * only need to do this once. If we start out in
2000 * 'default' mode, try and set ourselves to one
2001 * of the densities that would determine a wad
2002 * of other stuff. Go from highest to lowest.
2003 */
2004 if (softc->media_density == SCSI_DEFAULT_DENSITY) {
2005 int i;
2006 static u_int8_t ctry[] = {
2007 SCSI_DENSITY_HALFINCH_PE,
2008 SCSI_DENSITY_HALFINCH_6250C,
2009 SCSI_DENSITY_HALFINCH_6250,
2010 SCSI_DENSITY_HALFINCH_1600,
2011 SCSI_DENSITY_HALFINCH_800,
2012 SCSI_DENSITY_QIC_4GB,
2013 SCSI_DENSITY_QIC_2GB,
2014 SCSI_DENSITY_QIC_525_320,
2015 SCSI_DENSITY_QIC_150,
2016 SCSI_DENSITY_QIC_120,
2017 SCSI_DENSITY_QIC_24,
2018 SCSI_DENSITY_QIC_11_9TRK,
2019 SCSI_DENSITY_QIC_11_4TRK,
2020 SCSI_DENSITY_QIC_1320,
2021 SCSI_DENSITY_QIC_3080,
2022 0
2023 };
2024 for (i = 0; ctry[i]; i++) {
2025 error = sasetparams(periph,
2026 SA_PARAM_DENSITY, 0, ctry[i],
2027 0, SF_NO_PRINT);
2028 if (error == 0) {
2029 softc->media_density = ctry[i];
2030 break;
2031 }
2032 }
2033 }
2034 switch (softc->media_density) {
2035 case SCSI_DENSITY_QIC_11_4TRK:
2036 case SCSI_DENSITY_QIC_11_9TRK:
2037 case SCSI_DENSITY_QIC_24:
2038 case SCSI_DENSITY_QIC_120:
2039 case SCSI_DENSITY_QIC_150:
2040 case SCSI_DENSITY_QIC_525_320:
2041 case SCSI_DENSITY_QIC_1320:
2042 case SCSI_DENSITY_QIC_3080:
2043 softc->quirks &= ~SA_QUIRK_2FM;
2044 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2045 softc->last_media_blksize = 512;
2046 break;
2047 case SCSI_DENSITY_QIC_4GB:
2048 case SCSI_DENSITY_QIC_2GB:
2049 softc->quirks &= ~SA_QUIRK_2FM;
2050 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2051 softc->last_media_blksize = 1024;
2052 break;
2053 default:
2054 softc->last_media_blksize =
2055 softc->media_blksize;
2056 softc->quirks |= SA_QUIRK_VARIABLE;
2057 break;
2058 }
2059 }
2060
2061 /*
2062 * If no quirk has determined that this is a device that needs
2063 * to have 2 Filemarks at EOD, now is the time to find out.
2064 */
2065
2066 if ((softc->quirks & SA_QUIRK_2FM) == 0) {
2067 switch (softc->media_density) {
2068 case SCSI_DENSITY_HALFINCH_800:
2069 case SCSI_DENSITY_HALFINCH_1600:
2070 case SCSI_DENSITY_HALFINCH_6250:
2071 case SCSI_DENSITY_HALFINCH_6250C:
2072 case SCSI_DENSITY_HALFINCH_PE:
2073 softc->quirks &= ~SA_QUIRK_1FM;
2074 softc->quirks |= SA_QUIRK_2FM;
2075 break;
2076 default:
2077 break;
2078 }
2079 }
2080
2081 /*
2082 * Now validate that some info we got makes sense.
2083 */
2084 if ((softc->max_blk < softc->media_blksize) ||
2085 (softc->min_blk > softc->media_blksize &&
2086 softc->media_blksize)) {
2087 xpt_print_path(ccb->ccb_h.path);
2088 printf("BLOCK LIMITS (%d..%d) could not match current "
2089 "block settings (%d)- adjusting\n", softc->min_blk,
2090 softc->max_blk, softc->media_blksize);
2091 softc->max_blk = softc->min_blk =
2092 softc->media_blksize;
2093 }
2094
2095 /*
2096 * Now put ourselves into the right frame of mind based
2097 * upon quirks...
2098 */
2099tryagain:
2100 /*
2101 * If we want to be in FIXED mode and our current blocksize
2102 * is not equal to our last blocksize (if nonzero), try and
2103 * set ourselves to this last blocksize (as the 'preferred'
2104 * block size). The initial quirkmatch at registry sets the
2105 * initial 'last' blocksize. If, for whatever reason, this
2106 * 'last' blocksize is zero, set the blocksize to 512,
2107 * or min_blk if that's larger.
2108 */
2109 if ((softc->quirks & SA_QUIRK_FIXED) &&
2110 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
2111 (softc->media_blksize != softc->last_media_blksize)) {
2112 softc->media_blksize = softc->last_media_blksize;
2113 if (softc->media_blksize == 0) {
2114 softc->media_blksize = 512;
2115 if (softc->media_blksize < softc->min_blk) {
2116 softc->media_blksize = softc->min_blk;
2117 }
2118 }
2119 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2120 softc->media_blksize, 0, 0, SF_NO_PRINT);
2121 if (error) {
2122 xpt_print_path(ccb->ccb_h.path);
2123 printf("unable to set fixed blocksize to %d\n",
2124 softc->media_blksize);
2125 goto exit;
2126 }
2127 }
2128
2129 if ((softc->quirks & SA_QUIRK_VARIABLE) &&
2130 (softc->media_blksize != 0)) {
2131 softc->last_media_blksize = softc->media_blksize;
2132 softc->media_blksize = 0;
2133 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2134 0, 0, 0, SF_NO_PRINT);
2135 if (error) {
2136 /*
2137 * If this fails and we were guessing, just
2138 * assume that we got it wrong and go try
2139 * fixed block mode. Don't even check against
2140 * density code at this point.
2141 */
2142 if (guessing) {
2143 softc->quirks &= ~SA_QUIRK_VARIABLE;
2144 softc->quirks |= SA_QUIRK_FIXED;
2145 if (softc->last_media_blksize == 0)
2146 softc->last_media_blksize = 512;
2147 goto tryagain;
2148 }
2149 xpt_print_path(ccb->ccb_h.path);
2150 printf("unable to set variable blocksize\n");
2151 goto exit;
2152 }
2153 }
2154
2155 /*
2156 * Now that we have the current block size,
2157 * set up some parameters for sastart's usage.
2158 */
2159 if (softc->media_blksize) {
2160 softc->flags |= SA_FLAG_FIXED;
2161 if (powerof2(softc->media_blksize)) {
2162 softc->blk_shift =
2163 ffs(softc->media_blksize) - 1;
2164 softc->blk_mask = softc->media_blksize - 1;
2165 } else {
2166 softc->blk_mask = ~0;
2167 softc->blk_shift = 0;
2168 }
2169 } else {
2170 /*
2171 * The SCSI-3 spec allows 0 to mean "unspecified".
2172 * The SCSI-1 spec allows 0 to mean 'infinite'.
2173 *
2174 * Either works here.
2175 */
2176 if (softc->max_blk == 0) {
2177 softc->max_blk = ~0;
2178 }
2179 softc->blk_shift = 0;
2180 if (softc->blk_gran != 0) {
2181 softc->blk_mask = softc->blk_gran - 1;
2182 } else {
2183 softc->blk_mask = 0;
2184 }
2185 }
2186
2187 if (write_protect)
2188 softc->flags |= SA_FLAG_TAPE_WP;
2189
2190 if (comp_supported) {
2191 if (softc->saved_comp_algorithm == 0)
2192 softc->saved_comp_algorithm =
2193 softc->comp_algorithm;
2194 softc->flags |= SA_FLAG_COMP_SUPP;
2195 if (comp_enabled)
2196 softc->flags |= SA_FLAG_COMP_ENABLED;
2197 } else
2198 softc->flags |= SA_FLAG_COMP_UNSUPP;
2199
2200 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
2201 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
2202 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
2203 0, 0, SF_NO_PRINT);
2204 if (error == 0) {
2205 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
2206 } else {
2207 xpt_print_path(ccb->ccb_h.path);
2208 printf("unable to set buffered mode\n");
2209 }
2210 error = 0; /* not an error */
2211 }
2212
2213
2214 if (error == 0) {
2215 softc->flags |= SA_FLAG_TAPE_MOUNTED;
2216 }
2217exit:
2218 if (rblim != NULL)
2219 free(rblim, M_TEMP);
2220
2221 if (error != 0) {
2222 softc->dsreg = MTIO_DSREG_NIL;
2223 } else {
2224 softc->fileno = softc->blkno = 0;
2225 softc->dsreg = MTIO_DSREG_REST;
2226 }
2227#ifdef SA_1FM_AT_EOD
2228 if ((softc->quirks & SA_QUIRK_2FM) == 0)
2229 softc->quirks |= SA_QUIRK_1FM;
2230#else
2231 if ((softc->quirks & SA_QUIRK_1FM) == 0)
2232 softc->quirks |= SA_QUIRK_2FM;
2233#endif
2234 } else
2235 xpt_release_ccb(ccb);
2236
2237 /*
2238 * If we return an error, we're not mounted any more,
2239 * so release any device reservation.
2240 */
2241 if (error != 0) {
2242 (void) sareservereleaseunit(periph, FALSE);
2243 } else {
2244 /*
2245 * Clear I/O residual.
2246 */
2247 softc->last_io_resid = 0;
2248 softc->last_ctl_resid = 0;
2249 }
2250 return (error);
2251}
2252
2253/*
2254 * How many filemarks do we need to write if we were to terminate the
2255 * tape session right now? Note that this can be a negative number
2256 */
2257
2258static int
2259samarkswanted(struct cam_periph *periph)
2260{
2261 int markswanted;
2262 struct sa_softc *softc;
2263
2264 softc = (struct sa_softc *)periph->softc;
2265 markswanted = 0;
2266 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
2267 markswanted++;
2268 if (softc->quirks & SA_QUIRK_2FM)
2269 markswanted++;
2270 }
2271 markswanted -= softc->filemarks;
2272 return (markswanted);
2273}
2274
2275static int
2276sacheckeod(struct cam_periph *periph)
2277{
2278 int error;
2279 int markswanted;
2280 struct sa_softc *softc;
2281
2282 softc = (struct sa_softc *)periph->softc;
2283 markswanted = samarkswanted(periph);
2284
2285 if (markswanted > 0) {
2286 error = sawritefilemarks(periph, markswanted, FALSE);
2287 } else {
2288 error = 0;
2289 }
2290 return (error);
2291}
2292
2293static int
2294saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
2295{
2296 static const char *toobig =
2297 "%d-byte tape record bigger than supplied buffer\n";
2298 struct cam_periph *periph;
2299 struct sa_softc *softc;
2300 struct ccb_scsiio *csio;
2301 struct scsi_sense_data *sense;
2302 u_int32_t resid = 0;
2303 int32_t info = 0;
2304 cam_status status;
2305 int error_code, sense_key, asc, ascq, error, aqvalid;
2306
2307 periph = xpt_path_periph(ccb->ccb_h.path);
2308 softc = (struct sa_softc *)periph->softc;
2309 csio = &ccb->csio;
2310 sense = &csio->sense_data;
2311 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq);
2312 aqvalid = sense->extra_len >= 6;
2313 error = 0;
2314
2315 status = csio->ccb_h.status & CAM_STATUS_MASK;
2316
2317 /*
2318 * Calculate/latch up, any residuals... We do this in a funny 2-step
2319 * so we can print stuff here if we have CAM_DEBUG enabled for this
2320 * unit.
2321 */
2322 if (status == CAM_SCSI_STATUS_ERROR) {
2323 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
2324 info = (int32_t) scsi_4btoul(sense->info);
2325 resid = info;
2326 if ((softc->flags & SA_FLAG_FIXED) != 0)
2327 resid *= softc->media_blksize;
2328 } else {
2329 resid = csio->dxfer_len;
2330 info = resid;
2331 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2332 if (softc->media_blksize)
2333 info /= softc->media_blksize;
2334 }
2335 }
2336 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) {
2337 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
2338 sizeof (struct scsi_sense_data));
2339 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
2340 (int) csio->cdb_len);
2341 softc->last_io_resid = resid;
2342 softc->last_resid_was_io = 1;
2343 } else {
2344 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
2345 sizeof (struct scsi_sense_data));
2346 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
2347 (int) csio->cdb_len);
2348 softc->last_ctl_resid = resid;
2349 softc->last_resid_was_io = 0;
2350 }
2351 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
2352 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d "
2353 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
2354 sense_key, asc, ascq, status,
2355 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len));
2356 } else {
2357 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2358 ("Cam Status 0x%x\n", status));
2359 }
2360
2361 switch (status) {
2362 case CAM_REQ_CMP:
2363 return (0);
2364 case CAM_SCSI_STATUS_ERROR:
2365 /*
2366 * If a read/write command, we handle it here.
2367 */
2368 if (CCB_Type(csio) != SA_CCB_WAITING) {
2369 break;
2370 }
2371 /*
2372 * If this was just EOM/EOP, Filemark, Setmark or ILI detected
2373 * on a non read/write command, we assume it's not an error
2374 * and propagate the residule and return.
2375 */
2376 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) ||
2377 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
2378 csio->resid = resid;
2379 QFRLS(ccb);
2380 return (0);
2381 }
2382 /*
2383 * Otherwise, we let the common code handle this.
2384 */
2385 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2386
2387 /*
2388 * XXX: To Be Fixed
2389 * We cannot depend upon CAM honoring retry counts for these.
2390 */
2391 case CAM_SCSI_BUS_RESET:
2392 case CAM_BDR_SENT:
2393 if (ccb->ccb_h.retry_count <= 0) {
2394 return (EIO);
2395 break;
2396 }
2397 /* FALLTHROUGH */
2398 default:
2399 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2400 }
2401
2402 /*
2403 * Handle filemark, end of tape, mismatched record sizes....
2404 * From this point out, we're only handling read/write cases.
2405 * Handle writes && reads differently.
2406 */
2407
2408 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
2409 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
2410 csio->resid = resid;
2411 error = ENOSPC;
2412 } else if (sense->flags & SSD_EOM) {
2413 softc->flags |= SA_FLAG_EOM_PENDING;
2414 /*
2415 * Grotesque as it seems, the few times
2416 * I've actually seen a non-zero resid,
2417 * the tape drive actually lied and had
2418 * writtent all the data!.
2419 */
2420 csio->resid = 0;
2421 }
2422 } else {
2423 csio->resid = resid;
2424 if (sense_key == SSD_KEY_BLANK_CHECK) {
2425 if (softc->quirks & SA_QUIRK_1FM) {
2426 error = 0;
2427 softc->flags |= SA_FLAG_EOM_PENDING;
2428 } else {
2429 error = EIO;
2430 }
2431 } else if (sense->flags & SSD_FILEMARK) {
2432 if (softc->flags & SA_FLAG_FIXED) {
2433 error = -1;
2434 softc->flags |= SA_FLAG_EOF_PENDING;
2435 }
2436 /*
2437 * Unconditionally, if we detected a filemark on a read,
2438 * mark that we've run moved a file ahead.
2439 */
2440 if (softc->fileno != (daddr_t) -1) {
2441 softc->fileno++;
2442 softc->blkno = 0;
2443 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
2444 }
2445 }
2446 }
2447
2448 /*
2449 * Incorrect Length usually applies to read, but can apply to writes.
2450 */
2451 if (error == 0 && (sense->flags & SSD_ILI)) {
2452 if (info < 0) {
2453 xpt_print_path(csio->ccb_h.path);
2454 printf(toobig, csio->dxfer_len - info);
2455 csio->resid = csio->dxfer_len;
2456 error = EIO;
2457 } else {
2458 csio->resid = resid;
2459 if (softc->flags & SA_FLAG_FIXED) {
2460 softc->flags |= SA_FLAG_EIO_PENDING;
2461 }
2462 /*
2463 * Bump the block number if we hadn't seen a filemark.
2464 * Do this independent of errors (we've moved anyway).
2465 */
2466 if ((sense->flags & SSD_FILEMARK) == 0) {
2467 if (softc->blkno != (daddr_t) -1) {
2468 softc->blkno++;
2469 csio->ccb_h.ccb_pflags |=
2470 SA_POSITION_UPDATED;
2471 }
2472 }
2473 }
2474 }
2475
2476 if (error <= 0) {
2477 /*
2478 * Unfreeze the queue if frozen as we're not returning anything
2479 * to our waiters that would indicate an I/O error has occurred
2480 * (yet).
2481 */
2482 QFRLS(ccb);
2483 error = 0;
2484 }
2485 return (error);
2486}
2487
2488static int
2489sagetparams(struct cam_periph *periph, sa_params params_to_get,
2490 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
2491 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
2492 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
2493 sa_comp_t *tcs)
2494{
2495 union ccb *ccb;
2496 void *mode_buffer;
2497 struct scsi_mode_header_6 *mode_hdr;
2498 struct scsi_mode_blk_desc *mode_blk;
2499 int mode_buffer_len;
2500 struct sa_softc *softc;
2501 u_int8_t cpage;
2502 int error;
2503 cam_status status;
2504
2505 softc = (struct sa_softc *)periph->softc;
2506 ccb = cam_periph_getccb(periph, 1);
2507 if (softc->quirks & SA_QUIRK_NO_CPAGE)
2508 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2509 else
2510 cpage = SA_DATA_COMPRESSION_PAGE;
2511
2512retry:
2513 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2514
2515 if (params_to_get & SA_PARAM_COMPRESSION) {
2516 if (softc->quirks & SA_QUIRK_NOCOMP) {
2517 *comp_supported = FALSE;
2518 params_to_get &= ~SA_PARAM_COMPRESSION;
2519 } else
2520 mode_buffer_len += sizeof (sa_comp_t);
2521 }
2522
898d961b 2523 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO);
984263bc
MD
2524 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2525 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2526
2527 /* it is safe to retry this */
2528 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2529 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
2530 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
2531 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2532
2533 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2534 &softc->device_stats);
2535 QFRLS(ccb);
2536
2537 status = ccb->ccb_h.status & CAM_STATUS_MASK;
2538
2539 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
2540 /*
2541 * Hmm. Let's see if we can try another page...
2542 * If we've already done that, give up on compression
2543 * for this device and remember this for the future
2544 * and attempt the request without asking for compression
2545 * info.
2546 */
2547 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2548 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2549 goto retry;
2550 }
2551 softc->quirks |= SA_QUIRK_NOCOMP;
2552 free(mode_buffer, M_TEMP);
2553 goto retry;
2554 } else if (status == CAM_SCSI_STATUS_ERROR) {
2555 /* Tell the user about the fatal error. */
2556 scsi_sense_print(&ccb->csio);
2557 goto sagetparamsexit;
2558 }
2559
2560 /*
2561 * If the user only wants the compression information, and
2562 * the device doesn't send back the block descriptor, it's
2563 * no big deal. If the user wants more than just
2564 * compression, though, and the device doesn't pass back the
2565 * block descriptor, we need to send another mode sense to
2566 * get the block descriptor.
2567 */
2568 if ((mode_hdr->blk_desc_len == 0) &&
2569 (params_to_get & SA_PARAM_COMPRESSION) &&
2570 (params_to_get & ~(SA_PARAM_COMPRESSION))) {
2571
2572 /*
2573 * Decrease the mode buffer length by the size of
2574 * the compression page, to make sure the data
2575 * there doesn't get overwritten.
2576 */
2577 mode_buffer_len -= sizeof (sa_comp_t);
2578
2579 /*
2580 * Now move the compression page that we presumably
2581 * got back down the memory chunk a little bit so
2582 * it doesn't get spammed.
2583 */
2584 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
2585 bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
2586
2587 /*
2588 * Now, we issue another mode sense and just ask
2589 * for the block descriptor, etc.
2590 */
2591
2592 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2593 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
2594 mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
2595 SCSIOP_TIMEOUT);
2596
2597 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2598 &softc->device_stats);
2599 QFRLS(ccb);
2600
2601 if (error != 0)
2602 goto sagetparamsexit;
2603 }
2604
2605 if (params_to_get & SA_PARAM_BLOCKSIZE)
2606 *blocksize = scsi_3btoul(mode_blk->blklen);
2607
2608 if (params_to_get & SA_PARAM_NUMBLOCKS)
2609 *numblocks = scsi_3btoul(mode_blk->nblocks);
2610
2611 if (params_to_get & SA_PARAM_BUFF_MODE)
2612 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
2613
2614 if (params_to_get & SA_PARAM_DENSITY)
2615 *density = mode_blk->density;
2616
2617 if (params_to_get & SA_PARAM_WP)
2618 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
2619
2620 if (params_to_get & SA_PARAM_SPEED)
2621 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
2622
2623 if (params_to_get & SA_PARAM_COMPRESSION) {
2624 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
2625 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2626 struct scsi_data_compression_page *cp = &ntcs->dcomp;
2627 *comp_supported =
2628 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
2629 *comp_enabled =
2630 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
2631 *comp_algorithm = scsi_4btoul(cp->comp_algorithm);
2632 } else {
2633 struct scsi_dev_conf_page *cp = &ntcs->dconf;
2634 /*
2635 * We don't really know whether this device supports
2636 * Data Compression if the the algorithm field is
2637 * zero. Just say we do.
2638 */
2639 *comp_supported = TRUE;
2640 *comp_enabled =
2641 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
2642 *comp_algorithm = cp->sel_comp_alg;
2643 }
2644 if (tcs != NULL)
2645 bcopy(ntcs, tcs, sizeof (sa_comp_t));
2646 }
2647
2648 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2649 int idx;
2650 char *xyz = mode_buffer;
2651 xpt_print_path(periph->path);
2652 printf("Mode Sense Data=");
2653 for (idx = 0; idx < mode_buffer_len; idx++)
2654 printf(" 0x%02x", xyz[idx] & 0xff);
2655 printf("\n");
2656 }
2657
2658sagetparamsexit:
2659
2660 xpt_release_ccb(ccb);
2661 free(mode_buffer, M_TEMP);
2662 return (error);
2663}
2664
2665/*
2666 * The purpose of this function is to set one of four different parameters
2667 * for a tape drive:
2668 * - blocksize
2669 * - density
2670 * - compression / compression algorithm
2671 * - buffering mode
2672 *
2673 * The assumption is that this will be called from saioctl(), and therefore
2674 * from a process context. Thus the waiting malloc calls below. If that
2675 * assumption ever changes, the malloc calls should be changed to be
2676 * NOWAIT mallocs.
2677 *
2678 * Any or all of the four parameters may be set when this function is
2679 * called. It should handle setting more than one parameter at once.
2680 */
2681static int
2682sasetparams(struct cam_periph *periph, sa_params params_to_set,
2683 u_int32_t blocksize, u_int8_t density, u_int32_t calg,
2684 u_int32_t sense_flags)
2685{
2686 struct sa_softc *softc;
2687 u_int32_t current_blocksize;
2688 u_int32_t current_calg;
2689 u_int8_t current_density;
2690 u_int8_t current_speed;
2691 int comp_enabled, comp_supported;
2692 void *mode_buffer;
2693 int mode_buffer_len;
2694 struct scsi_mode_header_6 *mode_hdr;
2695 struct scsi_mode_blk_desc *mode_blk;
2696 sa_comp_t *ccomp, *cpage;
2697 int buff_mode;
2698 union ccb *ccb = NULL;
2699 int error;
2700
2701 softc = (struct sa_softc *)periph->softc;
2702
898d961b 2703 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_INTWAIT);
984263bc
MD
2704
2705 /*
2706 * Since it doesn't make sense to set the number of blocks, or
2707 * write protection, we won't try to get the current value. We
2708 * always want to get the blocksize, so we can set it back to the
2709 * proper value.
2710 */
2711 error = sagetparams(periph,
2712 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED,
2713 &current_blocksize, &current_density, NULL, &buff_mode, NULL,
2714 &current_speed, &comp_supported, &comp_enabled,
2715 &current_calg, ccomp);
2716
2717 if (error != 0) {
2718 free(ccomp, M_TEMP);
2719 return (error);
2720 }
2721
2722 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2723 if (params_to_set & SA_PARAM_COMPRESSION)
2724 mode_buffer_len += sizeof (sa_comp_t);
2725
898d961b 2726 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO);
984263bc
MD
2727
2728 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2729 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2730
2731 ccb = cam_periph_getccb(periph, 1);
2732
2733retry:
2734
2735 if (params_to_set & SA_PARAM_COMPRESSION) {
2736 if (mode_blk) {
2737 cpage = (sa_comp_t *)&mode_blk[1];
2738 } else {
2739 cpage = (sa_comp_t *)&mode_hdr[1];
2740 }
2741 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2742 cpage->hdr.pagecode &= ~0x80;
2743 } else
2744 cpage = NULL;
2745
2746 /*
2747 * If the caller wants us to set the blocksize, use the one they
2748 * pass in. Otherwise, use the blocksize we got back from the
2749 * mode select above.
2750 */
2751 if (mode_blk) {
2752 if (params_to_set & SA_PARAM_BLOCKSIZE)
2753 scsi_ulto3b(blocksize, mode_blk->blklen);
2754 else
2755 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2756
2757 /*
2758 * Set density if requested, else preserve old density.
2759 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2760 * devices, else density we've latched up in our softc.
2761 */
2762 if (params_to_set & SA_PARAM_DENSITY) {
2763 mode_blk->density = density;
2764 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2765 mode_blk->density = SCSI_SAME_DENSITY;
2766 } else {
2767 mode_blk->density = softc->media_density;
2768 }
2769 }
2770
2771 /*
2772 * For mode selects, these two fields must be zero.
2773 */
2774 mode_hdr->data_length = 0;
2775 mode_hdr->medium_type = 0;
2776
2777 /* set the speed to the current value */
2778 mode_hdr->dev_spec = current_speed;
2779
2780 /* set single-initiator buffering mode */
2781 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
2782
2783 if (mode_blk)
2784 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
2785 else
2786 mode_hdr->blk_desc_len = 0;
2787
2788 /*
2789 * First, if the user wants us to set the compression algorithm or
2790 * just turn compression on, check to make sure that this drive
2791 * supports compression.
2792 */
2793 if (params_to_set & SA_PARAM_COMPRESSION) {
2794 /*
2795 * If the compression algorithm is 0, disable compression.
2796 * If the compression algorithm is non-zero, enable
2797 * compression and set the compression type to the
2798 * specified compression algorithm, unless the algorithm is
2799 * MT_COMP_ENABLE. In that case, we look at the
2800 * compression algorithm that is currently set and if it is
2801 * non-zero, we leave it as-is. If it is zero, and we have
2802 * saved a compression algorithm from a time when
2803 * compression was enabled before, set the compression to
2804 * the saved value.
2805 */
2806 switch (ccomp->hdr.pagecode & ~0x80) {
2807 case SA_DATA_COMPRESSION_PAGE:
2808 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
2809 struct scsi_data_compression_page *dcp = &cpage->dcomp;
2810 if (calg == 0) {
2811 /*
2812 * Disable compression, but leave the
2813 * decompression and the capability bit
2814 * alone.
2815 */
2816 dcp->dce_and_dcc = SA_DCP_DCC;
2817 dcp->dde_and_red |= SA_DCP_DDE;
2818 break;
2819 }
2820 /* enable compression && decompression */
2821 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
2822 dcp->dde_and_red |= SA_DCP_DDE;
2823 /*
2824 * If there, use compression algorithm from caller.
2825 * Otherwise, if there's a saved compression algorithm
2826 * and there is no current algorithm, use the saved
2827 * algorithm. Else parrot back what we got and hope
2828 * for the best.
2829 */
2830 if (calg != MT_COMP_ENABLE) {
2831 scsi_ulto4b(calg, dcp->comp_algorithm);
2832 scsi_ulto4b(calg, dcp->decomp_algorithm);
2833 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
2834 softc->saved_comp_algorithm != 0) {
2835 scsi_ulto4b(softc->saved_comp_algorithm,
2836 dcp->comp_algorithm);
2837 scsi_ulto4b(softc->saved_comp_algorithm,
2838 dcp->decomp_algorithm);
2839 }
2840 break;
2841 }
2842 case SA_DEVICE_CONFIGURATION_PAGE:
2843 {
2844 struct scsi_dev_conf_page *dcp = &cpage->dconf;
2845 if (calg == 0) {
2846 dcp->sel_comp_alg = SA_COMP_NONE;
2847 break;
2848 }
2849 if (calg != MT_COMP_ENABLE) {
2850 dcp->sel_comp_alg = calg;
2851 } else if (dcp->sel_comp_alg == SA_COMP_NONE &&
2852 softc->saved_comp_algorithm != 0) {
2853 dcp->sel_comp_alg = softc->saved_comp_algorithm;
2854 }
2855 break;
2856 }
2857 default:
2858 /*
2859 * The drive doesn't seem to support compression,
2860 * so turn off the set compression bit.
2861 */
2862 params_to_set &= ~SA_PARAM_COMPRESSION;
2863 xpt_print_path(periph->path);
2864 printf("device does not seem to support compression\n");
2865
2866 /*
2867 * If that was the only thing the user wanted us to set,
2868 * clean up allocated resources and return with
2869 * 'operation not supported'.
2870 */
2871 if (params_to_set == SA_PARAM_NONE) {
2872 free(mode_buffer, M_TEMP);
2873 xpt_release_ccb(ccb);
2874 return (ENODEV);
2875 }
2876
2877 /*
2878 * That wasn't the only thing the user wanted us to set.
2879 * So, decrease the stated mode buffer length by the
2880 * size of the compression mode page.
2881 */
2882 mode_buffer_len -= sizeof(sa_comp_t);
2883 }
2884 }
2885
2886 /* It is safe to retry this operation */
2887 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
2888 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
2889 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2890
2891 error = cam_periph_runccb(ccb, saerror, 0,
2892 sense_flags, &softc->device_stats);
2893 QFRLS(ccb);
2894
2895 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2896 int idx;
2897 char *xyz = mode_buffer;
2898 xpt_print_path(periph->path);
2899 printf("Err%d, Mode Select Data=", error);
2900 for (idx = 0; idx < mode_buffer_len; idx++)
2901 printf(" 0x%02x", xyz[idx] & 0xff);
2902 printf("\n");
2903 }
2904
2905
2906 if (error) {
2907 /*
2908 * If we can, try without setting density/blocksize.
2909 */
2910 if (mode_blk) {
2911 if ((params_to_set &
2912 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
2913 mode_blk = NULL;
2914 goto retry;
2915 }
2916 } else {
2917 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2918 cpage = (sa_comp_t *)&mode_blk[1];
2919 }
2920
2921 /*
2922 * If we were setting the blocksize, and that failed, we
2923 * want to set it to its original value. If we weren't
2924 * setting the blocksize, we don't want to change it.
2925 */
2926 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2927
2928 /*
2929 * Set density if requested, else preserve old density.
2930 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2931 * devices, else density we've latched up in our softc.
2932 */
2933 if (params_to_set & SA_PARAM_DENSITY) {
2934 mode_blk->density = current_density;
2935 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2936 mode_blk->density = SCSI_SAME_DENSITY;
2937 } else {
2938 mode_blk->density = softc->media_density;
2939 }
2940
2941 if (params_to_set & SA_PARAM_COMPRESSION)
2942 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2943
2944 /*
2945 * The retry count is the only CCB field that might have been
2946 * changed that we care about, so reset it back to 1.
2947 */
2948 ccb->ccb_h.retry_count = 1;
2949 cam_periph_runccb(ccb, saerror, 0, sense_flags,
2950 &softc->device_stats);
2951 QFRLS(ccb);
2952 }
2953
2954 xpt_release_ccb(ccb);
2955
2956 if (ccomp != NULL)
2957 free(ccomp, M_TEMP);
2958
2959 if (params_to_set & SA_PARAM_COMPRESSION) {
2960 if (error) {
2961 softc->flags &= ~SA_FLAG_COMP_ENABLED;
2962 /*
2963 * Even if we get an error setting compression,
2964 * do not say that we don't support it. We could
2965 * have been wrong, or it may be media specific.
2966 * softc->flags &= ~SA_FLAG_COMP_SUPP;
2967 */
2968 softc->saved_comp_algorithm = softc->comp_algorithm;
2969 softc->comp_algorithm = 0;
2970 } else {
2971 softc->flags |= SA_FLAG_COMP_ENABLED;
2972 softc->comp_algorithm = calg;
2973 }
2974 }
2975
2976 free(mode_buffer, M_TEMP);
2977 return (error);
2978}
2979
2980static void
2981saprevent(struct cam_periph *periph, int action)
2982{
2983 struct sa_softc *softc;
2984 union ccb *ccb;
2985 int error, sf;
2986
2987 softc = (struct sa_softc *)periph->softc;
2988
2989 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
2990 return;
2991 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
2992 return;
2993
2994 /*
2995 * We can be quiet about illegal requests.
2996 */
2997 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2998 sf = 0;
2999 } else
3000 sf = SF_QUIET_IR;
3001
3002 ccb = cam_periph_getccb(periph, 1);
3003
3004 /* It is safe to retry this operation */
3005 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
3006 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3007
3008 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats);
3009 QFRLS(ccb);
3010 if (error == 0) {
3011 if (action == PR_ALLOW)
3012 softc->flags &= ~SA_FLAG_TAPE_LOCKED;
3013 else
3014 softc->flags |= SA_FLAG_TAPE_LOCKED;
3015 }
3016
3017 xpt_release_ccb(ccb);
3018}
3019
3020static int
3021sarewind(struct cam_periph *periph)
3022{
3023 union ccb *ccb;
3024 struct sa_softc *softc;
3025 int error;
3026
3027 softc = (struct sa_softc *)periph->softc;
3028
3029 ccb = cam_periph_getccb(periph, 1);
3030
3031 /* It is safe to retry this operation */
3032 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3033 SSD_FULL_SIZE, REWIND_TIMEOUT);
3034
3035 softc->dsreg = MTIO_DSREG_REW;
3036 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3037 softc->dsreg = MTIO_DSREG_REST;
3038
3039 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3040 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3041
3042 xpt_release_ccb(ccb);
3043 if (error == 0)
3044 softc->fileno = softc->blkno = (daddr_t) 0;
3045 else
3046 softc->fileno = softc->blkno = (daddr_t) -1;
3047 return (error);
3048}
3049
3050static int
3051saspace(struct cam_periph *periph, int count, scsi_space_code code)
3052{
3053 union ccb *ccb;
3054 struct sa_softc *softc;
3055 int error;
3056
3057 softc = (struct sa_softc *)periph->softc;
3058
3059 ccb = cam_periph_getccb(periph, 1);
3060
3061 /* This cannot be retried */
3062
3063 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
3064 SSD_FULL_SIZE, SPACE_TIMEOUT);
3065
3066 /*
3067 * Clear residual because we will be using it.
3068 */
3069 softc->last_ctl_resid = 0;
3070
3071 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
3072 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3073 softc->dsreg = MTIO_DSREG_REST;
3074
3075 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3076 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3077
3078 xpt_release_ccb(ccb);
3079
3080 /*
3081 * If a spacing operation has failed, we need to invalidate
3082 * this mount.
3083 *
3084 * If the spacing operation was setmarks or to end of recorded data,
3085 * we no longer know our relative position.
3086 *
3087 * If the spacing operations was spacing files in reverse, we
3088 * take account of the residual, but still check against less
3089 * than zero- if we've gone negative, we must have hit BOT.
3090 *
3091 * If the spacing operations was spacing records in reverse and
3092 * we have a residual, we've either hit BOT or hit a filemark.
3093 * In the former case, we know our new record number (0). In
3094 * the latter case, we have absolutely no idea what the real
3095 * record number is- we've stopped between the end of the last
3096 * record in the previous file and the filemark that stopped
3097 * our spacing backwards.
3098 */
3099 if (error) {
3100 softc->fileno = softc->blkno = (daddr_t) -1;
3101 } else if (code == SS_SETMARKS || code == SS_EOD) {
3102 softc->fileno = softc->blkno = (daddr_t) -1;
3103 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
3104 softc->fileno += (count - softc->last_ctl_resid);
3105 if (softc->fileno < 0) /* we must of hit BOT */
3106 softc->fileno = 0;
3107 softc->blkno = 0;
3108 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
3109 softc->blkno += (count - softc->last_ctl_resid);
3110 if (count < 0) {
3111 if (softc->last_ctl_resid || softc->blkno < 0) {
3112 if (softc->fileno == 0) {
3113 softc->blkno = 0;
3114 } else {
3115 softc->blkno = (daddr_t) -1;
3116 }
3117 }
3118 }
3119 }
3120 return (error);
3121}
3122
3123static int
3124sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
3125{
3126 union ccb *ccb;
3127 struct sa_softc *softc;
3128 int error, nwm = 0;
3129
3130 softc = (struct sa_softc *)periph->softc;
3131
3132 ccb = cam_periph_getccb(periph, 1);
3133 /*
3134 * Clear residual because we will be using it.
3135 */
3136 softc->last_ctl_resid = 0;
3137
3138 softc->dsreg = MTIO_DSREG_FMK;
3139 /* this *must* not be retried */
3140 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
3141 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
3142 softc->dsreg = MTIO_DSREG_REST;
3143
3144
3145 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3146
3147 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3148 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3149
3150 if (error == 0 && nmarks) {
3151 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3152 nwm = nmarks - softc->last_ctl_resid;
3153 softc->filemarks += nwm;
3154 }
3155
3156 xpt_release_ccb(ccb);
3157
3158 /*
3159 * Update relative positions (if we're doing that).
3160 */
3161 if (error) {
3162 softc->fileno = softc->blkno = (daddr_t) -1;
3163 } else if (softc->fileno != (daddr_t) -1) {
3164 softc->fileno += nwm;
3165 softc->blkno = 0;
3166 }
3167 return (error);
3168}
3169
3170static int
3171sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3172{
3173 struct scsi_tape_position_data loc;
3174 union ccb *ccb;
3175 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3176 int error;
3177
3178 /*
3179 * We try and flush any buffered writes here if we were writing
3180 * and we're trying to get hardware block position. It eats
3181 * up performance substantially, but I'm wary of drive firmware.
3182 *
3183 * I think that *logical* block position is probably okay-
3184 * but hardware block position might have to wait for data
3185 * to hit media to be valid. Caveat Emptor.
3186 */
3187
3188 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
3189 error = sawritefilemarks(periph, 0, 0);
3190 if (error && error != EACCES)
3191 return (error);
3192 }
3193
3194 ccb = cam_periph_getccb(periph, 1);
3195 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3196 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3197 softc->dsreg = MTIO_DSREG_RBSY;
3198 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3199 softc->dsreg = MTIO_DSREG_REST;
3200 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3201 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3202
3203 if (error == 0) {
3204 if (loc.flags & SA_RPOS_UNCERTAIN) {
3205 error = EINVAL; /* nothing is certain */
3206 } else {
3207 *blkptr = scsi_4btoul(loc.firstblk);
3208 }
3209 }
3210
3211 xpt_release_ccb(ccb);
3212 return (error);
3213}
3214
3215static int
3216sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3217{
3218 union ccb *ccb;
3219 struct sa_softc *softc;
3220 int error;
3221
3222 /*
3223 * We used to try and flush any buffered writes here.
3224 * Now we push this onto user applications to either
3225 * flush the pending writes themselves (via a zero count
3226 * WRITE FILEMARKS command) or they can trust their tape
3227 * drive to do this correctly for them.
3228 */
3229
3230 softc = (struct sa_softc *)periph->softc;
3231 ccb = cam_periph_getccb(periph, 1);
3232
3233
3234 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3235 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT);
3236
3237
3238 softc->dsreg = MTIO_DSREG_POS;
3239 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3240 softc->dsreg = MTIO_DSREG_REST;
3241 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3242 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3243 xpt_release_ccb(ccb);
3244 /*
3245 * Note relative file && block number position as now unknown.
3246 */
3247 softc->fileno = softc->blkno = (daddr_t) -1;
3248 return (error);
3249}
3250
3251static int
3252saretension(struct cam_periph *periph)
3253{
3254 union ccb *ccb;
3255 struct sa_softc *softc;
3256 int error;
3257
3258 softc = (struct sa_softc *)periph->softc;
3259
3260 ccb = cam_periph_getccb(periph, 1);
3261
3262 /* It is safe to retry this operation */
3263 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3264 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
3265
3266 softc->dsreg = MTIO_DSREG_TEN;
3267 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3268 softc->dsreg = MTIO_DSREG_REST;
3269
3270 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3271 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3272 xpt_release_ccb(ccb);
3273 if (error == 0)
3274 softc->fileno = softc->blkno = (daddr_t) 0;
3275 else
3276 softc->fileno = softc->blkno = (daddr_t) -1;
3277 return (error);
3278}
3279
3280static int
3281sareservereleaseunit(struct cam_periph *periph, int reserve)
3282{
3283 union ccb *ccb;
3284 struct sa_softc *softc;
3285 int error;
3286
3287 softc = (struct sa_softc *)periph->softc;
3288 ccb = cam_periph_getccb(periph, 1);
3289
3290 /* It is safe to retry this operation */
3291 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
3292 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
3293 softc->dsreg = MTIO_DSREG_RBSY;
3294 error = cam_periph_runccb(ccb, saerror, 0,
3295 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats);
3296 softc->dsreg = MTIO_DSREG_REST;
3297 QFRLS(ccb);
3298 xpt_release_ccb(ccb);
3299
3300 /*
3301 * If the error was Illegal Request, then the device doesn't support
3302 * RESERVE/RELEASE. This is not an error.
3303 */
3304 if (error == EINVAL) {
3305 error = 0;
3306 }
3307
3308 return (error);
3309}
3310
3311static int
3312saloadunload(struct cam_periph *periph, int load)
3313{
3314 union ccb *ccb;
3315 struct sa_softc *softc;
3316 int error;
3317
3318 softc = (struct sa_softc *)periph->softc;
3319
3320 ccb = cam_periph_getccb(periph, 1);
3321
3322 /* It is safe to retry this operation */
3323 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3324 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
3325
3326 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
3327 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3328 softc->dsreg = MTIO_DSREG_REST;
3329 QFRLS(ccb);
3330 xpt_release_ccb(ccb);
3331
3332 if (error || load == 0)
3333 softc->fileno = softc->blkno = (daddr_t) -1;
3334 else if (error == 0)
3335 softc->fileno = softc->blkno = (daddr_t) 0;
3336 return (error);
3337}
3338
3339static int
3340saerase(struct cam_periph *periph, int longerase)
3341{
3342
3343 union ccb *ccb;
3344 struct sa_softc *softc;
3345 int error;
3346
3347 softc = (struct sa_softc *)periph->softc;
3348
3349 ccb = cam_periph_getccb(periph, 1);
3350
3351 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
3352 SSD_FULL_SIZE, ERASE_TIMEOUT);
3353
3354 softc->dsreg = MTIO_DSREG_ZER;
3355 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3356 softc->dsreg = MTIO_DSREG_REST;
3357
3358 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3359 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3360 xpt_release_ccb(ccb);
3361 return (error);
3362}
3363
3364#endif /* _KERNEL */
3365
3366/*
3367 * Read tape block limits command.
3368 */
3369void
3370scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
3371 void (*cbfcnp)(struct cam_periph *, union ccb *),
3372 u_int8_t tag_action,
3373 struct scsi_read_block_limits_data *rlimit_buf,
3374 u_int8_t sense_len, u_int32_t timeout)
3375{
3376 struct scsi_read_block_limits *scsi_cmd;
3377
3378 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3379 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
3380 sizeof(*scsi_cmd), timeout);
3381
3382 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
3383 bzero(scsi_cmd, sizeof(*scsi_cmd));
3384 scsi_cmd->opcode = READ_BLOCK_LIMITS;
3385}
3386
3387void
3388scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
3389 void (*cbfcnp)(struct cam_periph *, union ccb *),
3390 u_int8_t tag_action, int readop, int sli,
3391 int fixed, u_int32_t length, u_int8_t *data_ptr,
3392 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
3393{
3394 struct scsi_sa_rw *scsi_cmd;
3395
3396 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
3397 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE;
3398 scsi_cmd->sli_fixed = 0;
3399 if (sli && readop)
3400 scsi_cmd->sli_fixed |= SAR_SLI;
3401 if (fixed)
3402 scsi_cmd->sli_fixed |= SARW_FIXED;
3403 scsi_ulto3b(length, scsi_cmd->length);
3404 scsi_cmd->control = 0;
3405
3406 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT,
3407 tag_action, data_ptr, dxfer_len, sense_len,
3408 sizeof(*scsi_cmd), timeout);
3409}
3410
3411void
3412scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
3413 void (*cbfcnp)(struct cam_periph *, union ccb *),
3414 u_int8_t tag_action, int immediate, int eot,
3415 int reten, int load, u_int8_t sense_len,
3416 u_int32_t timeout)
3417{
3418 struct scsi_load_unload *scsi_cmd;
3419
3420 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
3421 bzero(scsi_cmd, sizeof(*scsi_cmd));
3422 scsi_cmd->opcode = LOAD_UNLOAD;
3423 if (immediate)
3424 scsi_cmd->immediate = SLU_IMMED;
3425 if (eot)
3426 scsi_cmd->eot_reten_load |= SLU_EOT;
3427 if (reten)
3428 scsi_cmd->eot_reten_load |= SLU_RETEN;
3429 if (load)
3430 scsi_cmd->eot_reten_load |= SLU_LOAD;
3431
3432 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3433 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
3434}
3435
3436void
3437scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
3438 void (*cbfcnp)(struct cam_periph *, union ccb *),
3439 u_int8_t tag_action, int immediate, u_int8_t sense_len,
3440 u_int32_t timeout)
3441{
3442 struct scsi_rewind *scsi_cmd;
3443
3444 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
3445 bzero(scsi_cmd, sizeof(*scsi_cmd));
3446 scsi_cmd->opcode = REWIND;
3447 if (immediate)
3448 scsi_cmd->immediate = SREW_IMMED;
3449
3450 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3451 0, sense_len, sizeof(*scsi_cmd), timeout);
3452}
3453
3454void
3455scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
3456 void (*cbfcnp)(struct cam_periph *, union ccb *),
3457 u_int8_t tag_action, scsi_space_code code,
3458 u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
3459{
3460 struct scsi_space *scsi_cmd;
3461
3462 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
3463 scsi_cmd->opcode = SPACE;
3464 scsi_cmd->code = code;
3465 scsi_ulto3b(count, scsi_cmd->count);
3466 scsi_cmd->control = 0;
3467
3468 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3469 0, sense_len, sizeof(*scsi_cmd), timeout);
3470}
3471
3472void
3473scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
3474 void (*cbfcnp)(struct cam_periph *, union ccb *),
3475 u_int8_t tag_action, int immediate, int setmark,
3476 u_int32_t num_marks, u_int8_t sense_len,
3477 u_int32_t timeout)
3478{
3479 struct scsi_write_filemarks *scsi_cmd;
3480
3481 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
3482 bzero(scsi_cmd, sizeof(*scsi_cmd));
3483 scsi_cmd->opcode = WRITE_FILEMARKS;
3484 if (immediate)
3485 scsi_cmd->byte2 |= SWFMRK_IMMED;
3486 if (setmark)
3487 scsi_cmd->byte2 |= SWFMRK_WSMK;
3488
3489 scsi_ulto3b(num_marks, scsi_cmd->num_marks);
3490
3491 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3492 0, sense_len, sizeof(*scsi_cmd), timeout);
3493}
3494
3495/*
3496 * The reserve and release unit commands differ only by their opcodes.
3497 */
3498void
3499scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
3500 void (*cbfcnp)(struct cam_periph *, union ccb *),
3501 u_int8_t tag_action, int third_party,
3502 int third_party_id, u_int8_t sense_len,
3503 u_int32_t timeout, int reserve)
3504{
3505 struct scsi_reserve_release_unit *scsi_cmd;
3506
3507 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
3508 bzero(scsi_cmd, sizeof(*scsi_cmd));
3509
3510 if (reserve)
3511 scsi_cmd->opcode = RESERVE_UNIT;
3512 else
3513 scsi_cmd->opcode = RELEASE_UNIT;
3514
3515 if (third_party) {
3516 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
3517 scsi_cmd->lun_thirdparty |=
3518 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
3519 }
3520
3521 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3522 0, sense_len, sizeof(*scsi_cmd), timeout);
3523}
3524
3525void
3526scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
3527 void (*cbfcnp)(struct cam_periph *, union ccb *),
3528 u_int8_t tag_action, int immediate, int long_erase,
3529 u_int8_t sense_len, u_int32_t timeout)
3530{
3531 struct scsi_erase *scsi_cmd;
3532
3533 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
3534 bzero(scsi_cmd, sizeof(*scsi_cmd));
3535
3536 scsi_cmd->opcode = ERASE;
3537
3538 if (immediate)
3539 scsi_cmd->lun_imm_long |= SE_IMMED;
3540
3541 if (long_erase)
3542 scsi_cmd->lun_imm_long |= SE_LONG;
3543
3544 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3545 0, sense_len, sizeof(*scsi_cmd), timeout);
3546}
3547
3548/*
3549 * Read Tape Position command.
3550 */
3551void
3552scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
3553 void (*cbfcnp)(struct cam_periph *, union ccb *),
3554 u_int8_t tag_action, int hardsoft,
3555 struct scsi_tape_position_data *sbp,
3556 u_int8_t sense_len, u_int32_t timeout)
3557{
3558 struct scsi_tape_read_position *scmd;
3559
3560 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3561 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
3562 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
3563 bzero(scmd, sizeof(*scmd));
3564 scmd->opcode = READ_POSITION;
3565 scmd->byte1 = hardsoft;
3566}
3567
3568/*
3569 * Set Tape Position command.
3570 */
3571void
3572scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries,
3573 void (*cbfcnp)(struct cam_periph *, union ccb *),
3574 u_int8_t tag_action, int hardsoft, u_int32_t blkno,
3575 u_int8_t sense_len, u_int32_t timeout)
3576{
3577 struct scsi_tape_locate *scmd;
3578
3579 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3580 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout);
3581 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
3582 bzero(scmd, sizeof(*scmd));
3583 scmd->opcode = LOCATE;
3584 if (hardsoft)
3585 scmd->byte1 |= SA_SPOS_BT;
3586 scsi_ulto4b(blkno, scmd->blkaddr);
3587}