Properly assert the state of the MP lock in the async syscall message
[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 $
0e224b5d 3 * $DragonFly: src/sys/bus/cam/scsi/scsi_sa.c,v 1.14 2006/01/22 14:03:51 swildner 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>
4e01b467 49#include <sys/thread2.h>
05220613 50#endif
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51#include <sys/devicestat.h>
52#include <machine/limits.h>
53
54#ifndef _KERNEL
55#include <stdio.h>
56#include <string.h>
57#endif
58
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59#include "../cam.h"
60#include "../cam_ccb.h"
61#include "../cam_extend.h"
62#include "../cam_periph.h"
63#include "../cam_xpt_periph.h"
64#include "../cam_debug.h"
984263bc 65
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66#include "scsi_all.h"
67#include "scsi_message.h"
68#include "scsi_sa.h"
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69
70#ifdef _KERNEL
71
72#include <opt_sa.h>
73
74#ifndef SA_IO_TIMEOUT
75#define SA_IO_TIMEOUT 4
76#endif
77#ifndef SA_SPACE_TIMEOUT
78#define SA_SPACE_TIMEOUT 1 * 60
79#endif
80#ifndef SA_REWIND_TIMEOUT
81#define SA_REWIND_TIMEOUT 2 * 60
82#endif
83#ifndef SA_ERASE_TIMEOUT
84#define SA_ERASE_TIMEOUT 4 * 60
85#endif
86
87#define SCSIOP_TIMEOUT (60 * 1000) /* not an option */
88
89#define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000)
90#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000)
91#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000)
92#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000)
93
94/*
95 * Additional options that can be set for config: SA_1FM_AT_EOT
96 */
97
98#ifndef UNUSED_PARAMETER
99#define UNUSED_PARAMETER(x) x = x
100#endif
101
102#define QFRLS(ccb) \
103 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \
104 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE)
105
106/*
107 * Driver states
108 */
109
110
111typedef enum {
112 SA_STATE_NORMAL, SA_STATE_ABNORMAL
113} sa_state;
114
115#define ccb_pflags ppriv_field0
116#define ccb_bp ppriv_ptr1
117
118#define SA_CCB_BUFFER_IO 0x0
119#define SA_CCB_WAITING 0x1
120#define SA_CCB_TYPEMASK 0x1
121#define SA_POSITION_UPDATED 0x2
122
123#define Set_CCB_Type(x, type) \
124 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \
125 x->ccb_h.ccb_pflags |= type
126
127#define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK)
128
129
130
131typedef enum {
132 SA_FLAG_OPEN = 0x0001,
133 SA_FLAG_FIXED = 0x0002,
134 SA_FLAG_TAPE_LOCKED = 0x0004,
135 SA_FLAG_TAPE_MOUNTED = 0x0008,
136 SA_FLAG_TAPE_WP = 0x0010,
137 SA_FLAG_TAPE_WRITTEN = 0x0020,
138 SA_FLAG_EOM_PENDING = 0x0040,
139 SA_FLAG_EIO_PENDING = 0x0080,
140 SA_FLAG_EOF_PENDING = 0x0100,
141 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
142 SA_FLAG_EOF_PENDING),
143 SA_FLAG_INVALID = 0x0200,
144 SA_FLAG_COMP_ENABLED = 0x0400,
145 SA_FLAG_COMP_SUPP = 0x0800,
146 SA_FLAG_COMP_UNSUPP = 0x1000,
147 SA_FLAG_TAPE_FROZEN = 0x2000
148} sa_flags;
149
150typedef enum {
151 SA_MODE_REWIND = 0x00,
152 SA_MODE_NOREWIND = 0x01,
153 SA_MODE_OFFLINE = 0x02
154} sa_mode;
155
156typedef enum {
157 SA_PARAM_NONE = 0x00,
158 SA_PARAM_BLOCKSIZE = 0x01,
159 SA_PARAM_DENSITY = 0x02,
160 SA_PARAM_COMPRESSION = 0x04,
161 SA_PARAM_BUFF_MODE = 0x08,
162 SA_PARAM_NUMBLOCKS = 0x10,
163 SA_PARAM_WP = 0x20,
164 SA_PARAM_SPEED = 0x40,
165 SA_PARAM_ALL = 0x7f
166} sa_params;
167
168typedef enum {
169 SA_QUIRK_NONE = 0x00,
170 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */
171 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */
172 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */
173 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */
174 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */
175 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */
176 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */
177 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */
178} sa_quirks;
179
180/* units are bits 4-7, 16-21 (1024 units) */
181#define SAUNIT(DEV) \
182 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16))
183
184#define SAMODE(z) ((minor(z) & 0x3))
185#define SADENSITY(z) (((minor(z) >> 2) & 0x3))
186#define SA_IS_CTRL(z) (minor(z) & (1 << 29))
187
188#define SA_NOT_CTLDEV 0
189#define SA_CTLDEV 1
190
191#define SA_ATYPE_R 0
192#define SA_ATYPE_NR 1
193#define SA_ATYPE_ER 2
194
195#define SAMINOR(ctl, unit, mode, access) \
196 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \
197 (mode << 0x2) | (access & 0x3))
198
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199#define SA_UNITMASK SAMINOR(0, -1, 0, 0)
200#define SA_UNIT(unit) SAMINOR(0, unit, 0, 0)
201
984263bc 202#define SA_NUM_MODES 4
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203
204struct sa_softc {
205 sa_state state;
206 sa_flags flags;
207 sa_quirks quirks;
208 struct buf_queue_head buf_queue;
209 int queue_count;
210 struct devstat device_stats;
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211 int blk_gran;
212 int blk_mask;
213 int blk_shift;
214 u_int32_t max_blk;
215 u_int32_t min_blk;
216 u_int32_t comp_algorithm;
217 u_int32_t saved_comp_algorithm;
218 u_int32_t media_blksize;
219 u_int32_t last_media_blksize;
220 u_int32_t media_numblks;
221 u_int8_t media_density;
222 u_int8_t speed;
223 u_int8_t scsi_rev;
224 u_int8_t dsreg; /* mtio mt_dsreg, redux */
225 int buffer_mode;
226 int filemarks;
227 union ccb saved_ccb;
228 int last_resid_was_io;
229
230 /*
231 * Relative to BOT Location.
232 */
233 daddr_t fileno;
234 daddr_t blkno;
235
236 /*
237 * Latched Error Info
238 */
239 struct {
240 struct scsi_sense_data _last_io_sense;
241 u_int32_t _last_io_resid;
242 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
243 struct scsi_sense_data _last_ctl_sense;
244 u_int32_t _last_ctl_resid;
245 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
246#define last_io_sense errinfo._last_io_sense
247#define last_io_resid errinfo._last_io_resid
248#define last_io_cdb errinfo._last_io_cdb
249#define last_ctl_sense errinfo._last_ctl_sense
250#define last_ctl_resid errinfo._last_ctl_resid
251#define last_ctl_cdb errinfo._last_ctl_cdb
252 } errinfo;
253 /*
254 * Misc other flags/state
255 */
256 u_int32_t
257 : 31,
258 ctrl_mode : 1; /* control device open */
259};
260
261struct sa_quirk_entry {
262 struct scsi_inquiry_pattern inq_pat; /* matching pattern */
263 sa_quirks quirks; /* specific quirk type */
264 u_int32_t prefblk; /* preferred blocksize when in fixed mode */
265};
266
267static struct sa_quirk_entry sa_quirk_table[] =
268{
269 {
270 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream",
271 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD |
272 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768
273 },
274 {
275 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
276 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0
277 },
278 {
279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
280 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0
281 },
282 {
283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
284 "Python*", "*"}, SA_QUIRK_NODREAD, 0
285 },
286 {
287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
288 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
289 },
290 {
291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
292 "VIPER 2525 25462", "-011"},
293 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0
294 },
295 {
296 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
297 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
298 },
299#if 0
300 {
301 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
302 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0,
303 },
304#endif
305 {
306 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
307 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
308 },
309 {
310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
311 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
312 },
313 {
314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
315 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
316 },
317 {
318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
319 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
320 },
321 {
322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
323 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
324 },
325 {
326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
327 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
328 },
329 { /* jreynold@primenet.com */
330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
331 "STT8000N*", "*"}, SA_QUIRK_1FM, 0
332 },
333 { /* mike@sentex.net */
334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
335 "STT20000*", "*"}, SA_QUIRK_1FM, 0
336 },
337 {
338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
339 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
340 },
341 {
342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
343 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
344 },
345 {
346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
347 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
348 },
349 {
350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
351 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
352 },
353 {
354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
355 " SLR*", "*"}, SA_QUIRK_1FM, 0
356 },
357 {
358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
359 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
360 },
361 {
362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
363 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
364 }
365};
366
367static d_open_t saopen;
368static d_close_t saclose;
369static d_strategy_t sastrategy;
370static d_ioctl_t saioctl;
371static periph_init_t sainit;
372static periph_ctor_t saregister;
373static periph_oninv_t saoninvalidate;
374static periph_dtor_t sacleanup;
375static periph_start_t sastart;
376static void saasync(void *callback_arg, u_int32_t code,
377 struct cam_path *path, void *arg);
378static void sadone(struct cam_periph *periph,
379 union ccb *start_ccb);
380static int saerror(union ccb *ccb, u_int32_t cam_flags,
381 u_int32_t sense_flags);
382static int samarkswanted(struct cam_periph *);
383static int sacheckeod(struct cam_periph *periph);
384static int sagetparams(struct cam_periph *periph,
385 sa_params params_to_get,
386 u_int32_t *blocksize, u_int8_t *density,
387 u_int32_t *numblocks, int *buff_mode,
388 u_int8_t *write_protect, u_int8_t *speed,
389 int *comp_supported, int *comp_enabled,
390 u_int32_t *comp_algorithm,
391 sa_comp_t *comp_page);
392static int sasetparams(struct cam_periph *periph,
393 sa_params params_to_set,
394 u_int32_t blocksize, u_int8_t density,
395 u_int32_t comp_algorithm,
396 u_int32_t sense_flags);
397static void saprevent(struct cam_periph *periph, int action);
398static int sarewind(struct cam_periph *periph);
399static int saspace(struct cam_periph *periph, int count,
400 scsi_space_code code);
401static int samount(struct cam_periph *, int, dev_t);
402static int saretension(struct cam_periph *periph);
403static int sareservereleaseunit(struct cam_periph *periph,
404 int reserve);
405static int saloadunload(struct cam_periph *periph, int load);
406static int saerase(struct cam_periph *periph, int longerase);
407static int sawritefilemarks(struct cam_periph *periph,
408 int nmarks, int setmarks);
409static int sardpos(struct cam_periph *periph, int, u_int32_t *);
410static int sasetpos(struct cam_periph *periph, int, u_int32_t *);
411
412
413static struct periph_driver sadriver =
414{
415 sainit, "sa",
416 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
417};
418
419DATA_SET(periphdriver_set, sadriver);
420
421/* For 2.2-stable support */
422#ifndef D_TAPE
423#define D_TAPE 0
424#endif
425
426#define SA_CDEV_MAJOR 14
427
428static struct cdevsw sa_cdevsw = {
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429 /* name */ "sa",
430 /* maj */ SA_CDEV_MAJOR,
431 /* flags */ D_TAPE,
432 /* port */ NULL,
455fcd7e 433 /* clone */ NULL,
fabb8ceb 434
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435 /* open */ saopen,
436 /* close */ saclose,
437 /* read */ physread,
438 /* write */ physwrite,
439 /* ioctl */ saioctl,
440 /* poll */ nopoll,
441 /* mmap */ nommap,
442 /* strategy */ sastrategy,
984263bc 443 /* dump */ nodump,
fabb8ceb 444 /* psize */ nopsize
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445};
446
447static struct extend_array *saperiphs;
448
449static int
41c20dac 450saopen(dev_t dev, int flags, int fmt, struct thread *td)
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451{
452 struct cam_periph *periph;
453 struct sa_softc *softc;
454 int unit;
455 int mode;
456 int density;
457 int error;
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458
459 unit = SAUNIT(dev);
460 mode = SAMODE(dev);
461 density = SADENSITY(dev);
462
4e01b467 463 crit_enter();
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464 periph = cam_extend_get(saperiphs, unit);
465 if (periph == NULL) {
4e01b467 466 crit_exit();
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467 return (ENXIO);
468 }
469 softc = (struct sa_softc *)periph->softc;
377d4740 470 if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
4e01b467 471 crit_exit();
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472 return (error);
473 }
4e01b467 474 crit_exit();
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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 */
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581 sarewind(periph);
582 saloadunload(periph, FALSE);
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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;
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669
670 if (SA_IS_CTRL(bp->b_dev)) {
671 bp->b_error = EINVAL;
672 goto bad;
673 }
674 unit = SAUNIT(bp->b_dev);
675 periph = cam_extend_get(saperiphs, unit);
676 if (periph == NULL) {
677 bp->b_error = ENXIO;
678 goto bad;
679 }
680 softc = (struct sa_softc *)periph->softc;
681
4e01b467 682 crit_enter();
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683
684 if (softc->flags & SA_FLAG_INVALID) {
4e01b467 685 crit_exit();
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686 bp->b_error = ENXIO;
687 goto bad;
688 }
689
690 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
4e01b467 691 crit_exit();
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692 bp->b_error = EPERM;
693 goto bad;
694 }
695
4e01b467 696 crit_exit();
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697
698 /*
699 * If it's a null transfer, return immediatly
700 */
701 if (bp->b_bcount == 0)
702 goto done;
703
704 /* valid request? */
705 if (softc->flags & SA_FLAG_FIXED) {
706 /*
707 * Fixed block device. The byte count must
708 * be a multiple of our block size.
709 */
710 if (((softc->blk_mask != ~0) &&
711 ((bp->b_bcount & softc->blk_mask) != 0)) ||
712 ((softc->blk_mask == ~0) &&
713 ((bp->b_bcount % softc->min_blk) != 0))) {
714 xpt_print_path(periph->path);
715 printf("Invalid request. Fixed block device "
716 "requests must be a multiple "
717 "of %d bytes\n", softc->media_blksize);
718 bp->b_error = EINVAL;
719 goto bad;
720 }
721 } else if ((bp->b_bcount > softc->max_blk) ||
722 (bp->b_bcount < softc->min_blk) ||
723 (bp->b_bcount & softc->blk_mask) != 0) {
724
725 xpt_print_path(periph->path);
726 printf("Invalid request. Variable block device "
727 "requests must be ");
728 if (softc->blk_mask != 0) {
729 printf("a multiple of %d ", (0x1 << softc->blk_gran));
730 }
731 printf("between %d and %d bytes\n", softc->min_blk,
732 softc->max_blk);
733 bp->b_error = EINVAL;
734 goto bad;
735 }
736
737 /*
738 * Mask interrupts so that the device cannot be invalidated until
739 * after we are in the queue. Otherwise, we might not properly
740 * clean up one of the buffers.
741 */
4e01b467 742 crit_enter();
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743
744 /*
745 * Place it at the end of the queue.
746 */
747 bufq_insert_tail(&softc->buf_queue, bp);
748
749 softc->queue_count++;
750 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d "
751 "%s byte %s queue count now %d\n", (int) bp->b_bcount,
752 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
753 (bp->b_flags & B_READ)? "read" : "write", softc->queue_count));
754
4e01b467 755 crit_exit();
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756
757 /*
758 * Schedule ourselves for performing the work.
759 */
760 xpt_schedule(periph, 1);
761
762 return;
763bad:
764 bp->b_flags |= B_ERROR;
765done:
766
767 /*
768 * Correctly set the buf to indicate a completed xfer
769 */
770 bp->b_resid = bp->b_bcount;
771 biodone(bp);
772}
773
774static int
41c20dac 775saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
984263bc
MD
776{
777 struct cam_periph *periph;
778 struct sa_softc *softc;
779 scsi_space_code spaceop;
780 int didlockperiph = 0;
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781 int unit;
782 int mode;
783 int density;
784 int error = 0;
785
786 unit = SAUNIT(dev);
787 mode = SAMODE(dev);
788 density = SADENSITY(dev);
789 error = 0; /* shut up gcc */
790 spaceop = 0; /* shut up gcc */
791
792 periph = cam_extend_get(saperiphs, unit);
793 if (periph == NULL)
794 return (ENXIO);
795
796 softc = (struct sa_softc *)periph->softc;
797
798 /*
799 * Check for control mode accesses. We allow MTIOCGET and
800 * MTIOCERRSTAT (but need to be the only one open in order
801 * to clear latched status), and MTSETBSIZE, MTSETDNSTY
802 * and MTCOMP (but need to be the only one accessing this
803 * device to run those).
804 */
805
806 if (SA_IS_CTRL(dev)) {
807 switch (cmd) {
808 case MTIOCGETEOTMODEL:
809 case MTIOCGET:
810 break;
811 case MTIOCERRSTAT:
812 /*
813 * If the periph isn't already locked, lock it
814 * so our MTIOCERRSTAT can reset latched error stats.
815 *
816 * If the periph is already locked, skip it because
817 * we're just getting status and it'll be up to the
818 * other thread that has this device open to do
819 * an MTIOCERRSTAT that would clear latched status.
820 */
4e01b467 821 crit_enter();
984263bc 822 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
377d4740 823 error = cam_periph_lock(periph, PCATCH);
984263bc 824 if (error != 0) {
4e01b467 825 crit_exit();
984263bc
MD
826 return (error);
827 }
828 didlockperiph = 1;
829 }
4e01b467 830 crit_exit();
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831 break;
832
833 case MTIOCSETEOTMODEL:
834 case MTSETBSIZ:
835 case MTSETDNSTY:
836 case MTCOMP:
837 /*
838 * We need to acquire the peripheral here rather
839 * than at open time because we are sharing writable
840 * access to data structures.
841 */
4e01b467 842 crit_enter();
377d4740 843 error = cam_periph_lock(periph, PCATCH);
984263bc 844 if (error != 0) {
4e01b467 845 crit_exit();
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846 return (error);
847 }
848 didlockperiph = 1;
4e01b467 849 crit_exit();
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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 */
0e224b5d 1071 sacheckeod(periph);
984263bc
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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
0e224b5d 1093 sacheckeod(periph);
984263bc
MD
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;
984263bc
MD
1311
1312 softc = (struct sa_softc *)periph->softc;
1313
1314 /*
1315 * De-register any async callbacks.
1316 */
1317 xpt_setup_ccb(&csa.ccb_h, periph->path,
1318 /* priority */ 5);
1319 csa.ccb_h.func_code = XPT_SASYNC_CB;
1320 csa.event_enable = 0;
1321 csa.callback = saasync;
1322 csa.callback_arg = periph;
1323 xpt_action((union ccb *)&csa);
1324
1325 softc->flags |= SA_FLAG_INVALID;
1326
1327 /*
4e01b467 1328 * We need to be in a critical section here to keep the buffer
984263bc
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1329 * queue from being modified while we traverse it.
1330 */
4e01b467 1331 crit_enter();
984263bc
MD
1332
1333 /*
1334 * Return all queued I/O with ENXIO.
1335 * XXX Handle any transactions queued to the card
1336 * with XPT_ABORT_CCB.
1337 */
1338 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1339 bufq_remove(&softc->buf_queue, q_bp);
1340 q_bp->b_resid = q_bp->b_bcount;
1341 q_bp->b_error = ENXIO;
1342 q_bp->b_flags |= B_ERROR;
1343 biodone(q_bp);
1344 }
1345 softc->queue_count = 0;
4e01b467 1346 crit_exit();
984263bc
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1347
1348 xpt_print_path(periph->path);
1349 printf("lost device\n");
1350
1351}
1352
1353static void
1354sacleanup(struct cam_periph *periph)
1355{
1356 struct sa_softc *softc;
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MD
1357
1358 softc = (struct sa_softc *)periph->softc;
1359
1360 devstat_remove_entry(&softc->device_stats);
1361
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1362 cam_extend_release(saperiphs, periph->unit_number);
1363 xpt_print_path(periph->path);
1364 printf("removing device entry\n");
e4c9c0c8 1365 cdevsw_remove(&sa_cdevsw, SA_UNITMASK, SA_UNIT(periph->unit_number));
984263bc
MD
1366 free(softc, M_DEVBUF);
1367}
1368
1369static void
1370saasync(void *callback_arg, u_int32_t code,
1371 struct cam_path *path, void *arg)
1372{
1373 struct cam_periph *periph;
1374
1375 periph = (struct cam_periph *)callback_arg;
1376 switch (code) {
1377 case AC_FOUND_DEVICE:
1378 {
1379 struct ccb_getdev *cgd;
1380 cam_status status;
1381
1382 cgd = (struct ccb_getdev *)arg;
1383 if (cgd == NULL)
1384 break;
1385
1386 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
1387 break;
1388
1389 /*
1390 * Allocate a peripheral instance for
1391 * this device and start the probe
1392 * process.
1393 */
1394 status = cam_periph_alloc(saregister, saoninvalidate,
1395 sacleanup, sastart,
1396 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
1397 saasync, AC_FOUND_DEVICE, cgd);
1398
1399 if (status != CAM_REQ_CMP
1400 && status != CAM_REQ_INPROG)
1401 printf("saasync: Unable to probe new device "
1402 "due to status 0x%x\n", status);
1403 break;
1404 }
1405 default:
1406 cam_periph_async(periph, code, path, arg);
1407 break;
1408 }
1409}
1410
1411static cam_status
1412saregister(struct cam_periph *periph, void *arg)
1413{
1414 struct sa_softc *softc;
1415 struct ccb_setasync csa;
1416 struct ccb_getdev *cgd;
1417 caddr_t match;
1418 int i;
1419
1420 cgd = (struct ccb_getdev *)arg;
1421 if (periph == NULL) {
1422 printf("saregister: periph was NULL!!\n");
1423 return (CAM_REQ_CMP_ERR);
1424 }
1425
1426 if (cgd == NULL) {
1427 printf("saregister: no getdev CCB, can't register device\n");
1428 return (CAM_REQ_CMP_ERR);
1429 }
1430
ad86f6b6 1431 softc = malloc(sizeof (*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
984263bc
MD
1432 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
1433 softc->state = SA_STATE_NORMAL;
1434 softc->fileno = (daddr_t) -1;
1435 softc->blkno = (daddr_t) -1;
1436
1437 bufq_init(&softc->buf_queue);
1438 periph->softc = softc;
1439 cam_extend_set(saperiphs, periph->unit_number, periph);
1440
1441 /*
1442 * See if this device has any quirks.
1443 */
1444 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1445 (caddr_t)sa_quirk_table,
1446 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
1447 sizeof(*sa_quirk_table), scsi_inquiry_match);
1448
1449 if (match != NULL) {
1450 softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
1451 softc->last_media_blksize =
1452 ((struct sa_quirk_entry *)match)->prefblk;
1453#ifdef CAMDEBUG
1454 xpt_print_path(periph->path);
1455 printf("found quirk entry %d\n", (int)
1456 (((struct sa_quirk_entry *) match) - sa_quirk_table));
1457#endif
1458 } else
1459 softc->quirks = SA_QUIRK_NONE;
1460
1461 /*
1462 * The SA driver supports a blocksize, but we don't know the
1463 * blocksize until we media is inserted. So, set a flag to
1464 * indicate that the blocksize is unavailable right now.
1465 */
1466 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0,
1467 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
1468 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE);
1469
e4c9c0c8
MD
1470 cdevsw_add(&sa_cdevsw, SA_UNITMASK, SA_UNIT(periph->unit_number));
1471 make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV,
984263bc
MD
1472 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1473 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number);
1474
e4c9c0c8 1475 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV,
984263bc
MD
1476 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1477 0660, "r%s%d", periph->periph_name, periph->unit_number);
1478
e4c9c0c8 1479 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV,
984263bc
MD
1480 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR,
1481 0660, "nr%s%d", periph->periph_name, periph->unit_number);
1482
e4c9c0c8 1483 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV,
984263bc
MD
1484 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR,
1485 0660, "er%s%d", periph->periph_name, periph->unit_number);
1486
1487 for (i = 0; i < SA_NUM_MODES; i++) {
1488
e4c9c0c8 1489 make_dev(&sa_cdevsw,
984263bc
MD
1490 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R),
1491 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d",
1492 periph->periph_name, periph->unit_number, i);
1493
e4c9c0c8 1494 make_dev(&sa_cdevsw,
984263bc
MD
1495 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR),
1496 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d",
1497 periph->periph_name, periph->unit_number, i);
1498
1499
e4c9c0c8 1500 make_dev(&sa_cdevsw,
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MD
1501 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER),
1502 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d",
1503 periph->periph_name, periph->unit_number, i);
1504 }
1505
1506 /*
1507 * Add an async callback so that we get
1508 * notified if this device goes away.
1509 */
1510 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5);
1511 csa.ccb_h.func_code = XPT_SASYNC_CB;
1512 csa.event_enable = AC_LOST_DEVICE;
1513 csa.callback = saasync;
1514 csa.callback_arg = periph;
1515 xpt_action((union ccb *)&csa);
1516
1517 xpt_announce_periph(periph, NULL);
1518
1519 return (CAM_REQ_CMP);
1520}
1521
1522static void
1523sastart(struct cam_periph *periph, union ccb *start_ccb)
1524{
1525 struct sa_softc *softc;
1526
1527 softc = (struct sa_softc *)periph->softc;
1528
1529 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart"));
1530
1531
1532 switch (softc->state) {
1533 case SA_STATE_NORMAL:
1534 {
1535 /* Pull a buffer from the queue and get going on it */
1536 struct buf *bp;
984263bc
MD
1537
1538 /*
1539 * See if there is a buf with work for us to do..
1540 */
4e01b467 1541 crit_enter();
984263bc
MD
1542 bp = bufq_first(&softc->buf_queue);
1543 if (periph->immediate_priority <= periph->pinfo.priority) {
1544 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1545 ("queuing for immediate ccb\n"));
1546 Set_CCB_Type(start_ccb, SA_CCB_WAITING);
1547 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1548 periph_links.sle);
1549 periph->immediate_priority = CAM_PRIORITY_NONE;
4e01b467 1550 crit_exit();
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MD
1551 wakeup(&periph->ccb_list);
1552 } else if (bp == NULL) {
4e01b467 1553 crit_exit();
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MD
1554 xpt_release_ccb(start_ccb);
1555 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) {
1556 struct buf *done_bp;
1557again:
1558 softc->queue_count--;
1559 bufq_remove(&softc->buf_queue, bp);
1560 bp->b_resid = bp->b_bcount;
1561 done_bp = bp;
1562 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
1563 /*
1564 * We now just clear errors in this case
1565 * and let the residual be the notifier.
1566 */
1567 bp->b_error = 0;
1568 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
1569 /*
1570 * This can only happen if we're reading
1571 * in fixed length mode. In this case,
1572 * we dump the rest of the list the
1573 * same way.
1574 */
1575 bp->b_error = 0;
1576 if (bufq_first(&softc->buf_queue) != NULL) {
1577 biodone(done_bp);
1578 goto again;
1579 }
1580 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
1581 bp->b_error = EIO;
1582 bp->b_flags |= B_ERROR;
1583 }
1584 bp = bufq_first(&softc->buf_queue);
1585 /*
1586 * Only if we have no other buffers queued up
1587 * do we clear the pending error flag.
1588 */
1589 if (bp == NULL)
1590 softc->flags &= ~SA_FLAG_ERR_PENDING;
1591 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1592 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, "
1593 "%d more buffers queued up\n",
1594 (softc->flags & SA_FLAG_ERR_PENDING),
1595 (bp != NULL)? "not " : " ", softc->queue_count));
4e01b467 1596 crit_exit();
984263bc
MD
1597 xpt_release_ccb(start_ccb);
1598 biodone(done_bp);
1599 } else {
1600 u_int32_t length;
1601
1602 bufq_remove(&softc->buf_queue, bp);
1603 softc->queue_count--;
1604
1605 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1606 if (softc->blk_shift != 0) {
1607 length =
1608 bp->b_bcount >> softc->blk_shift;
1609 } else if (softc->media_blksize != 0) {
1610 length =
1611 bp->b_bcount / softc->media_blksize;
1612 } else {
1613 bp->b_error = EIO;
1614 xpt_print_path(periph->path);
1615 printf("zero blocksize for "
1616 "FIXED length writes?\n");
4e01b467 1617 crit_exit();
984263bc
MD
1618 biodone(bp);
1619 break;
1620 }
1621 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1622 ("Fixed Record Count is %d\n", length));
1623 } else {
1624 length = bp->b_bcount;
1625 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1626 ("Variable Record Count is %d\n", length));
1627 }
1628 devstat_start_transaction(&softc->device_stats);
1629 /*
1630 * Some people have theorized that we should
1631 * suppress illegal length indication if we are
1632 * running in variable block mode so that we don't
1633 * have to request sense every time our requested
1634 * block size is larger than the written block.
1635 * The residual information from the ccb allows
1636 * us to identify this situation anyway. The only
1637 * problem with this is that we will not get
1638 * information about blocks that are larger than
1639 * our read buffer unless we set the block size
1640 * in the mode page to something other than 0.
1641 *
1642 * I believe that this is a non-issue. If user apps
1643 * don't adjust their read size to match our record
1644 * size, that's just life. Anyway, the typical usage
1645 * would be to issue, e.g., 64KB reads and occasionally
1646 * have to do deal with 512 byte or 1KB intermediate
1647 * records.
1648 */
1649 softc->dsreg = (bp->b_flags & B_READ)?
1650 MTIO_DSREG_RD : MTIO_DSREG_WR;
1651 scsi_sa_read_write(&start_ccb->csio, 0, sadone,
1652 MSG_SIMPLE_Q_TAG, (bp->b_flags & B_READ) != 0,
1653 FALSE, (softc->flags & SA_FLAG_FIXED) != 0,
1654 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE,
1655 IO_TIMEOUT);
1656 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
1657 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO);
1658 start_ccb->ccb_h.ccb_bp = bp;
1659 bp = bufq_first(&softc->buf_queue);
4e01b467 1660 crit_exit();
984263bc
MD
1661 xpt_action(start_ccb);
1662 }
1663
1664 if (bp != NULL) {
1665 /* Have more work to do, so ensure we stay scheduled */
1666 xpt_schedule(periph, 1);
1667 }
1668 break;
1669 }
1670 case SA_STATE_ABNORMAL:
1671 default:
1672 panic("state 0x%x in sastart", softc->state);
1673 break;
1674 }
1675}
1676
1677
1678static void
1679sadone(struct cam_periph *periph, union ccb *done_ccb)
1680{
1681 struct sa_softc *softc;
1682 struct ccb_scsiio *csio;
1683
1684 softc = (struct sa_softc *)periph->softc;
1685 csio = &done_ccb->csio;
1686 switch (CCB_Type(csio)) {
1687 case SA_CCB_BUFFER_IO:
1688 {
1689 struct buf *bp;
1690 int error;
1691
1692 softc->dsreg = MTIO_DSREG_REST;
1693 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1694 error = 0;
1695 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1696 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
1697 /*
1698 * A retry was scheduled, so just return.
1699 */
1700 return;
1701 }
1702 }
1703
1704 if (error == EIO) {
984263bc
MD
1705 struct buf *q_bp;
1706
1707 /*
1708 * Catastrophic error. Mark the tape as frozen
1709 * (we no longer know tape position).
1710 *
1711 * Return all queued I/O with EIO, and unfreeze
1712 * our queue so that future transactions that
1713 * attempt to fix this problem can get to the
1714 * device.
1715 *
1716 */
1717
4e01b467 1718 crit_enter();
984263bc
MD
1719 softc->flags |= SA_FLAG_TAPE_FROZEN;
1720 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) {
1721 bufq_remove(&softc->buf_queue, q_bp);
1722 q_bp->b_resid = q_bp->b_bcount;
1723 q_bp->b_error = EIO;
1724 q_bp->b_flags |= B_ERROR;
1725 biodone(q_bp);
1726 }
4e01b467 1727 crit_exit();
984263bc
MD
1728 }
1729 if (error != 0) {
1730 bp->b_resid = bp->b_bcount;
1731 bp->b_error = error;
1732 bp->b_flags |= B_ERROR;
1733 /*
1734 * In the error case, position is updated in saerror.
1735 */
1736 } else {
1737 bp->b_resid = csio->resid;
1738 bp->b_error = 0;
1739 if (csio->resid != 0) {
1740 bp->b_flags |= B_ERROR;
1741 }
1742 if ((bp->b_flags & B_READ) == 0) {
1743 softc->flags |= SA_FLAG_TAPE_WRITTEN;
1744 softc->filemarks = 0;
1745 }
1746 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
1747 (softc->blkno != (daddr_t) -1)) {
1748 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1749 u_int32_t l;
1750 if (softc->blk_shift != 0) {
1751 l = bp->b_bcount >>
1752 softc->blk_shift;
1753 } else {
1754 l = bp->b_bcount /
1755 softc->media_blksize;
1756 }
1757 softc->blkno += (daddr_t) l;
1758 } else {
1759 softc->blkno++;
1760 }
1761 }
1762 }
1763 /*
1764 * If we had an error (immediate or pending),
1765 * release the device queue now.
1766 */
1767 if (error || (softc->flags & SA_FLAG_ERR_PENDING))
1768 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1769#ifdef CAMDEBUG
1770 if (error || bp->b_resid) {
1771 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1772 ("error %d resid %ld count %ld\n", error,
1773 bp->b_resid, bp->b_bcount));
1774 }
1775#endif
1776 devstat_end_transaction_buf(&softc->device_stats, bp);
1777 biodone(bp);
1778 break;
1779 }
1780 case SA_CCB_WAITING:
1781 {
1782 /* Caller will release the CCB */
1783 wakeup(&done_ccb->ccb_h.cbfcnp);
1784 return;
1785 }
1786 }
1787 xpt_release_ccb(done_ccb);
1788}
1789
1790/*
1791 * Mount the tape (make sure it's ready for I/O).
1792 */
1793static int
1794samount(struct cam_periph *periph, int oflags, dev_t dev)
1795{
1796 struct sa_softc *softc;
1797 union ccb *ccb;
1798 int error;
1799
1800 /*
1801 * oflags can be checked for 'kind' of open (read-only check) - later
1802 * dev can be checked for a control-mode or compression open - later
1803 */
1804 UNUSED_PARAMETER(oflags);
1805 UNUSED_PARAMETER(dev);
1806
1807
1808 softc = (struct sa_softc *)periph->softc;
1809
1810 /*
1811 * This should determine if something has happend since the last
1812 * open/mount that would invalidate the mount. We do *not* want
1813 * to retry this command- we just want the status. But we only
1814 * do this if we're mounted already- if we're not mounted,
1815 * we don't care about the unit read state and can instead use
1816 * this opportunity to attempt to reserve the tape unit.
1817 */
1818
1819 if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
1820 ccb = cam_periph_getccb(periph, 1);
1821 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1822 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1823 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1824 &softc->device_stats);
1825 QFRLS(ccb);
1826 if (error == ENXIO) {
1827 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1828 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1829 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1830 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1831 &softc->device_stats);
1832 QFRLS(ccb);
1833 } else if (error) {
1834 /*
1835 * We don't need to freeze the tape because we
1836 * will now attempt to rewind/load it.
1837 */
1838 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1839 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) {
1840 xpt_print_path(ccb->ccb_h.path);
1841 printf("error %d on TUR in samount\n", error);
1842 }
1843 }
1844 } else {
1845 error = sareservereleaseunit(periph, TRUE);
1846 if (error) {
1847 return (error);
1848 }
1849 ccb = cam_periph_getccb(periph, 1);
1850 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1851 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1852 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1853 &softc->device_stats);
1854 QFRLS(ccb);
1855 }
1856
1857 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
1858 struct scsi_read_block_limits_data *rblim = NULL;
1859 int comp_enabled, comp_supported;
1860 u_int8_t write_protect, guessing = 0;
1861
1862 /*
1863 * Clear out old state.
1864 */
1865 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
1866 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
1867 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP);
1868 softc->filemarks = 0;
1869
1870 /*
1871 * *Very* first off, make sure we're loaded to BOT.
1872 */
1873 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
1874 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
1875 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1876 &softc->device_stats);
1877 QFRLS(ccb);
1878
1879 /*
1880 * In case this doesn't work, do a REWIND instead
1881 */
1882 if (error) {
1883 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
1884 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1885 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1886 &softc->device_stats);
1887 QFRLS(ccb);
1888 }
1889 if (error) {
1890 xpt_release_ccb(ccb);
1891 goto exit;
1892 }
1893
1894 /*
1895 * Do a dummy test read to force access to the
1896 * media so that the drive will really know what's
1897 * there. We actually don't really care what the
1898 * blocksize on tape is and don't expect to really
1899 * read a full record.
1900 */
898d961b 1901 rblim = malloc(8192, M_TEMP, M_INTWAIT);
984263bc
MD
1902
1903 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
1904 scsi_sa_read_write(&ccb->csio, 0, sadone,
1905 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
1906 (void *) rblim, 8192, SSD_FULL_SIZE,
1907 IO_TIMEOUT);
0e224b5d 1908 cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
984263bc
MD
1909 &softc->device_stats);
1910 QFRLS(ccb);
1911 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
1912 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1913 error = cam_periph_runccb(ccb, saerror, 0,
1914 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA,
1915 &softc->device_stats);
1916 QFRLS(ccb);
1917 if (error) {
1918 xpt_print_path(ccb->ccb_h.path);
1919 printf("unable to rewind after test read\n");
1920 xpt_release_ccb(ccb);
1921 goto exit;
1922 }
1923 }
1924
1925 /*
1926 * Next off, determine block limits.
1927 */
1928 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
1929 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
1930
1931 error = cam_periph_runccb(ccb, saerror, 0,
1932 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO,
1933 &softc->device_stats);
1934 QFRLS(ccb);
1935 xpt_release_ccb(ccb);
1936
1937 if (error != 0) {
1938 /*
1939 * If it's less than SCSI-2, READ BLOCK LIMITS is not
1940 * a MANDATORY command. Anyway- it doesn't matter-
1941 * we can proceed anyway.
1942 */
1943 softc->blk_gran = 0;
1944 softc->max_blk = ~0;
1945 softc->min_blk = 0;
1946 } else {
1947 if (softc->scsi_rev >= SCSI_REV_3) {
1948 softc->blk_gran = RBL_GRAN(rblim);
1949 } else {
1950 softc->blk_gran = 0;
1951 }
1952 /*
1953 * We take max_blk == min_blk to mean a default to
1954 * fixed mode- but note that whatever we get out of
1955 * sagetparams below will actually determine whether
1956 * we are actually *in* fixed mode.
1957 */
1958 softc->max_blk = scsi_3btoul(rblim->maximum);
1959 softc->min_blk = scsi_2btoul(rblim->minimum);
1960
1961
1962 }
1963 /*
1964 * Next, perform a mode sense to determine
1965 * current density, blocksize, compression etc.
1966 */
1967 error = sagetparams(periph, SA_PARAM_ALL,
1968 &softc->media_blksize,
1969 &softc->media_density,
1970 &softc->media_numblks,
1971 &softc->buffer_mode, &write_protect,
1972 &softc->speed, &comp_supported,
1973 &comp_enabled, &softc->comp_algorithm,
1974 NULL);
1975
1976 if (error != 0) {
1977 /*
1978 * We could work a little harder here. We could
1979 * adjust our attempts to get information. It
1980 * might be an ancient tape drive. If someone
1981 * nudges us, we'll do that.
1982 */
1983 goto exit;
1984 }
1985
1986 /*
1987 * If no quirk has determined that this is a device that is
1988 * preferred to be in fixed or variable mode, now is the time
1989 * to find out.
1990 */
1991 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
1992 guessing = 1;
1993 /*
1994 * This could be expensive to find out. Luckily we
1995 * only need to do this once. If we start out in
1996 * 'default' mode, try and set ourselves to one
1997 * of the densities that would determine a wad
1998 * of other stuff. Go from highest to lowest.
1999 */
2000 if (softc->media_density == SCSI_DEFAULT_DENSITY) {
2001 int i;
2002 static u_int8_t ctry[] = {
2003 SCSI_DENSITY_HALFINCH_PE,
2004 SCSI_DENSITY_HALFINCH_6250C,
2005 SCSI_DENSITY_HALFINCH_6250,
2006 SCSI_DENSITY_HALFINCH_1600,
2007 SCSI_DENSITY_HALFINCH_800,
2008 SCSI_DENSITY_QIC_4GB,
2009 SCSI_DENSITY_QIC_2GB,
2010 SCSI_DENSITY_QIC_525_320,
2011 SCSI_DENSITY_QIC_150,
2012 SCSI_DENSITY_QIC_120,
2013 SCSI_DENSITY_QIC_24,
2014 SCSI_DENSITY_QIC_11_9TRK,
2015 SCSI_DENSITY_QIC_11_4TRK,
2016 SCSI_DENSITY_QIC_1320,
2017 SCSI_DENSITY_QIC_3080,
2018 0
2019 };
2020 for (i = 0; ctry[i]; i++) {
2021 error = sasetparams(periph,
2022 SA_PARAM_DENSITY, 0, ctry[i],
2023 0, SF_NO_PRINT);
2024 if (error == 0) {
2025 softc->media_density = ctry[i];
2026 break;
2027 }
2028 }
2029 }
2030 switch (softc->media_density) {
2031 case SCSI_DENSITY_QIC_11_4TRK:
2032 case SCSI_DENSITY_QIC_11_9TRK:
2033 case SCSI_DENSITY_QIC_24:
2034 case SCSI_DENSITY_QIC_120:
2035 case SCSI_DENSITY_QIC_150:
2036 case SCSI_DENSITY_QIC_525_320:
2037 case SCSI_DENSITY_QIC_1320:
2038 case SCSI_DENSITY_QIC_3080:
2039 softc->quirks &= ~SA_QUIRK_2FM;
2040 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2041 softc->last_media_blksize = 512;
2042 break;
2043 case SCSI_DENSITY_QIC_4GB:
2044 case SCSI_DENSITY_QIC_2GB:
2045 softc->quirks &= ~SA_QUIRK_2FM;
2046 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2047 softc->last_media_blksize = 1024;
2048 break;
2049 default:
2050 softc->last_media_blksize =
2051 softc->media_blksize;
2052 softc->quirks |= SA_QUIRK_VARIABLE;
2053 break;
2054 }
2055 }
2056
2057 /*
2058 * If no quirk has determined that this is a device that needs
2059 * to have 2 Filemarks at EOD, now is the time to find out.
2060 */
2061
2062 if ((softc->quirks & SA_QUIRK_2FM) == 0) {
2063 switch (softc->media_density) {
2064 case SCSI_DENSITY_HALFINCH_800:
2065 case SCSI_DENSITY_HALFINCH_1600:
2066 case SCSI_DENSITY_HALFINCH_6250:
2067 case SCSI_DENSITY_HALFINCH_6250C:
2068 case SCSI_DENSITY_HALFINCH_PE:
2069 softc->quirks &= ~SA_QUIRK_1FM;
2070 softc->quirks |= SA_QUIRK_2FM;
2071 break;
2072 default:
2073 break;
2074 }
2075 }
2076
2077 /*
2078 * Now validate that some info we got makes sense.
2079 */
2080 if ((softc->max_blk < softc->media_blksize) ||
2081 (softc->min_blk > softc->media_blksize &&
2082 softc->media_blksize)) {
2083 xpt_print_path(ccb->ccb_h.path);
2084 printf("BLOCK LIMITS (%d..%d) could not match current "
2085 "block settings (%d)- adjusting\n", softc->min_blk,
2086 softc->max_blk, softc->media_blksize);
2087 softc->max_blk = softc->min_blk =
2088 softc->media_blksize;
2089 }
2090
2091 /*
2092 * Now put ourselves into the right frame of mind based
2093 * upon quirks...
2094 */
2095tryagain:
2096 /*
2097 * If we want to be in FIXED mode and our current blocksize
2098 * is not equal to our last blocksize (if nonzero), try and
2099 * set ourselves to this last blocksize (as the 'preferred'
2100 * block size). The initial quirkmatch at registry sets the
2101 * initial 'last' blocksize. If, for whatever reason, this
2102 * 'last' blocksize is zero, set the blocksize to 512,
2103 * or min_blk if that's larger.
2104 */
2105 if ((softc->quirks & SA_QUIRK_FIXED) &&
2106 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
2107 (softc->media_blksize != softc->last_media_blksize)) {
2108 softc->media_blksize = softc->last_media_blksize;
2109 if (softc->media_blksize == 0) {
2110 softc->media_blksize = 512;
2111 if (softc->media_blksize < softc->min_blk) {
2112 softc->media_blksize = softc->min_blk;
2113 }
2114 }
2115 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2116 softc->media_blksize, 0, 0, SF_NO_PRINT);
2117 if (error) {
2118 xpt_print_path(ccb->ccb_h.path);
2119 printf("unable to set fixed blocksize to %d\n",
2120 softc->media_blksize);
2121 goto exit;
2122 }
2123 }
2124
2125 if ((softc->quirks & SA_QUIRK_VARIABLE) &&
2126 (softc->media_blksize != 0)) {
2127 softc->last_media_blksize = softc->media_blksize;
2128 softc->media_blksize = 0;
2129 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2130 0, 0, 0, SF_NO_PRINT);
2131 if (error) {
2132 /*
2133 * If this fails and we were guessing, just
2134 * assume that we got it wrong and go try
2135 * fixed block mode. Don't even check against
2136 * density code at this point.
2137 */
2138 if (guessing) {
2139 softc->quirks &= ~SA_QUIRK_VARIABLE;
2140 softc->quirks |= SA_QUIRK_FIXED;
2141 if (softc->last_media_blksize == 0)
2142 softc->last_media_blksize = 512;
2143 goto tryagain;
2144 }
2145 xpt_print_path(ccb->ccb_h.path);
2146 printf("unable to set variable blocksize\n");
2147 goto exit;
2148 }
2149 }
2150
2151 /*
2152 * Now that we have the current block size,
2153 * set up some parameters for sastart's usage.
2154 */
2155 if (softc->media_blksize) {
2156 softc->flags |= SA_FLAG_FIXED;
2157 if (powerof2(softc->media_blksize)) {
2158 softc->blk_shift =
2159 ffs(softc->media_blksize) - 1;
2160 softc->blk_mask = softc->media_blksize - 1;
2161 } else {
2162 softc->blk_mask = ~0;
2163 softc->blk_shift = 0;
2164 }
2165 } else {
2166 /*
2167 * The SCSI-3 spec allows 0 to mean "unspecified".
2168 * The SCSI-1 spec allows 0 to mean 'infinite'.
2169 *
2170 * Either works here.
2171 */
2172 if (softc->max_blk == 0) {
2173 softc->max_blk = ~0;
2174 }
2175 softc->blk_shift = 0;
2176 if (softc->blk_gran != 0) {
2177 softc->blk_mask = softc->blk_gran - 1;
2178 } else {
2179 softc->blk_mask = 0;
2180 }
2181 }
2182
2183 if (write_protect)
2184 softc->flags |= SA_FLAG_TAPE_WP;
2185
2186 if (comp_supported) {
2187 if (softc->saved_comp_algorithm == 0)
2188 softc->saved_comp_algorithm =
2189 softc->comp_algorithm;
2190 softc->flags |= SA_FLAG_COMP_SUPP;
2191 if (comp_enabled)
2192 softc->flags |= SA_FLAG_COMP_ENABLED;
2193 } else
2194 softc->flags |= SA_FLAG_COMP_UNSUPP;
2195
2196 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
2197 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
2198 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
2199 0, 0, SF_NO_PRINT);
2200 if (error == 0) {
2201 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
2202 } else {
2203 xpt_print_path(ccb->ccb_h.path);
2204 printf("unable to set buffered mode\n");
2205 }
2206 error = 0; /* not an error */
2207 }
2208
2209
2210 if (error == 0) {
2211 softc->flags |= SA_FLAG_TAPE_MOUNTED;
2212 }
2213exit:
2214 if (rblim != NULL)
2215 free(rblim, M_TEMP);
2216
2217 if (error != 0) {
2218 softc->dsreg = MTIO_DSREG_NIL;
2219 } else {
2220 softc->fileno = softc->blkno = 0;
2221 softc->dsreg = MTIO_DSREG_REST;
2222 }
2223#ifdef SA_1FM_AT_EOD
2224 if ((softc->quirks & SA_QUIRK_2FM) == 0)
2225 softc->quirks |= SA_QUIRK_1FM;
2226#else
2227 if ((softc->quirks & SA_QUIRK_1FM) == 0)
2228 softc->quirks |= SA_QUIRK_2FM;
2229#endif
2230 } else
2231 xpt_release_ccb(ccb);
2232
2233 /*
2234 * If we return an error, we're not mounted any more,
2235 * so release any device reservation.
2236 */
2237 if (error != 0) {
0e224b5d 2238 sareservereleaseunit(periph, FALSE);
984263bc
MD
2239 } else {
2240 /*
2241 * Clear I/O residual.
2242 */
2243 softc->last_io_resid = 0;
2244 softc->last_ctl_resid = 0;
2245 }
2246 return (error);
2247}
2248
2249/*
2250 * How many filemarks do we need to write if we were to terminate the
2251 * tape session right now? Note that this can be a negative number
2252 */
2253
2254static int
2255samarkswanted(struct cam_periph *periph)
2256{
2257 int markswanted;
2258 struct sa_softc *softc;
2259
2260 softc = (struct sa_softc *)periph->softc;
2261 markswanted = 0;
2262 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
2263 markswanted++;
2264 if (softc->quirks & SA_QUIRK_2FM)
2265 markswanted++;
2266 }
2267 markswanted -= softc->filemarks;
2268 return (markswanted);
2269}
2270
2271static int
2272sacheckeod(struct cam_periph *periph)
2273{
2274 int error;
2275 int markswanted;
2276 struct sa_softc *softc;
2277
2278 softc = (struct sa_softc *)periph->softc;
2279 markswanted = samarkswanted(periph);
2280
2281 if (markswanted > 0) {
2282 error = sawritefilemarks(periph, markswanted, FALSE);
2283 } else {
2284 error = 0;
2285 }
2286 return (error);
2287}
2288
2289static int
2290saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
2291{
2292 static const char *toobig =
2293 "%d-byte tape record bigger than supplied buffer\n";
2294 struct cam_periph *periph;
2295 struct sa_softc *softc;
2296 struct ccb_scsiio *csio;
2297 struct scsi_sense_data *sense;
2298 u_int32_t resid = 0;
2299 int32_t info = 0;
2300 cam_status status;
2301 int error_code, sense_key, asc, ascq, error, aqvalid;
2302
2303 periph = xpt_path_periph(ccb->ccb_h.path);
2304 softc = (struct sa_softc *)periph->softc;
2305 csio = &ccb->csio;
2306 sense = &csio->sense_data;
2307 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq);
2308 aqvalid = sense->extra_len >= 6;
2309 error = 0;
2310
2311 status = csio->ccb_h.status & CAM_STATUS_MASK;
2312
2313 /*
2314 * Calculate/latch up, any residuals... We do this in a funny 2-step
2315 * so we can print stuff here if we have CAM_DEBUG enabled for this
2316 * unit.
2317 */
2318 if (status == CAM_SCSI_STATUS_ERROR) {
2319 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
2320 info = (int32_t) scsi_4btoul(sense->info);
2321 resid = info;
2322 if ((softc->flags & SA_FLAG_FIXED) != 0)
2323 resid *= softc->media_blksize;
2324 } else {
2325 resid = csio->dxfer_len;
2326 info = resid;
2327 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2328 if (softc->media_blksize)
2329 info /= softc->media_blksize;
2330 }
2331 }
2332 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) {
2333 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
2334 sizeof (struct scsi_sense_data));
2335 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
2336 (int) csio->cdb_len);
2337 softc->last_io_resid = resid;
2338 softc->last_resid_was_io = 1;
2339 } else {
2340 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
2341 sizeof (struct scsi_sense_data));
2342 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
2343 (int) csio->cdb_len);
2344 softc->last_ctl_resid = resid;
2345 softc->last_resid_was_io = 0;
2346 }
2347 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
2348 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d "
2349 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
2350 sense_key, asc, ascq, status,
2351 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len));
2352 } else {
2353 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2354 ("Cam Status 0x%x\n", status));
2355 }
2356
2357 switch (status) {
2358 case CAM_REQ_CMP:
2359 return (0);
2360 case CAM_SCSI_STATUS_ERROR:
2361 /*
2362 * If a read/write command, we handle it here.
2363 */
2364 if (CCB_Type(csio) != SA_CCB_WAITING) {
2365 break;
2366 }
2367 /*
2368 * If this was just EOM/EOP, Filemark, Setmark or ILI detected
2369 * on a non read/write command, we assume it's not an error
2370 * and propagate the residule and return.
2371 */
2372 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) ||
2373 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
2374 csio->resid = resid;
2375 QFRLS(ccb);
2376 return (0);
2377 }
2378 /*
2379 * Otherwise, we let the common code handle this.
2380 */
2381 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2382
2383 /*
2384 * XXX: To Be Fixed
2385 * We cannot depend upon CAM honoring retry counts for these.
2386 */
2387 case CAM_SCSI_BUS_RESET:
2388 case CAM_BDR_SENT:
2389 if (ccb->ccb_h.retry_count <= 0) {
2390 return (EIO);
2391 break;
2392 }
2393 /* FALLTHROUGH */
2394 default:
2395 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2396 }
2397
2398 /*
2399 * Handle filemark, end of tape, mismatched record sizes....
2400 * From this point out, we're only handling read/write cases.
2401 * Handle writes && reads differently.
2402 */
2403
2404 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
2405 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
2406 csio->resid = resid;
2407 error = ENOSPC;
2408 } else if (sense->flags & SSD_EOM) {
2409 softc->flags |= SA_FLAG_EOM_PENDING;
2410 /*
2411 * Grotesque as it seems, the few times
2412 * I've actually seen a non-zero resid,
2413 * the tape drive actually lied and had
2414 * writtent all the data!.
2415 */
2416 csio->resid = 0;
2417 }
2418 } else {
2419 csio->resid = resid;
2420 if (sense_key == SSD_KEY_BLANK_CHECK) {
2421 if (softc->quirks & SA_QUIRK_1FM) {
2422 error = 0;
2423 softc->flags |= SA_FLAG_EOM_PENDING;
2424 } else {
2425 error = EIO;
2426 }
2427 } else if (sense->flags & SSD_FILEMARK) {
2428 if (softc->flags & SA_FLAG_FIXED) {
2429 error = -1;
2430 softc->flags |= SA_FLAG_EOF_PENDING;
2431 }
2432 /*
2433 * Unconditionally, if we detected a filemark on a read,
2434 * mark that we've run moved a file ahead.
2435 */
2436 if (softc->fileno != (daddr_t) -1) {
2437 softc->fileno++;
2438 softc->blkno = 0;
2439 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
2440 }
2441 }
2442 }
2443
2444 /*
2445 * Incorrect Length usually applies to read, but can apply to writes.
2446 */
2447 if (error == 0 && (sense->flags & SSD_ILI)) {
2448 if (info < 0) {
2449 xpt_print_path(csio->ccb_h.path);
2450 printf(toobig, csio->dxfer_len - info);
2451 csio->resid = csio->dxfer_len;
2452 error = EIO;
2453 } else {
2454 csio->resid = resid;
2455 if (softc->flags & SA_FLAG_FIXED) {
2456 softc->flags |= SA_FLAG_EIO_PENDING;
2457 }
2458 /*
2459 * Bump the block number if we hadn't seen a filemark.
2460 * Do this independent of errors (we've moved anyway).
2461 */
2462 if ((sense->flags & SSD_FILEMARK) == 0) {
2463 if (softc->blkno != (daddr_t) -1) {
2464 softc->blkno++;
2465 csio->ccb_h.ccb_pflags |=
2466 SA_POSITION_UPDATED;
2467 }
2468 }
2469 }
2470 }
2471
2472 if (error <= 0) {
2473 /*
2474 * Unfreeze the queue if frozen as we're not returning anything
2475 * to our waiters that would indicate an I/O error has occurred
2476 * (yet).
2477 */
2478 QFRLS(ccb);
2479 error = 0;
2480 }
2481 return (error);
2482}
2483
2484static int
2485sagetparams(struct cam_periph *periph, sa_params params_to_get,
2486 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
2487 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
2488 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
2489 sa_comp_t *tcs)
2490{
2491 union ccb *ccb;
2492 void *mode_buffer;
2493 struct scsi_mode_header_6 *mode_hdr;
2494 struct scsi_mode_blk_desc *mode_blk;
2495 int mode_buffer_len;
2496 struct sa_softc *softc;
2497 u_int8_t cpage;
2498 int error;
2499 cam_status status;
2500
2501 softc = (struct sa_softc *)periph->softc;
2502 ccb = cam_periph_getccb(periph, 1);
2503 if (softc->quirks & SA_QUIRK_NO_CPAGE)
2504 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2505 else
2506 cpage = SA_DATA_COMPRESSION_PAGE;
2507
2508retry:
2509 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2510
2511 if (params_to_get & SA_PARAM_COMPRESSION) {
2512 if (softc->quirks & SA_QUIRK_NOCOMP) {
2513 *comp_supported = FALSE;
2514 params_to_get &= ~SA_PARAM_COMPRESSION;
2515 } else
2516 mode_buffer_len += sizeof (sa_comp_t);
2517 }
2518
898d961b 2519 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO);
984263bc
MD
2520 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2521 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2522
2523 /* it is safe to retry this */
2524 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2525 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
2526 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
2527 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2528
2529 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2530 &softc->device_stats);
2531 QFRLS(ccb);
2532
2533 status = ccb->ccb_h.status & CAM_STATUS_MASK;
2534
2535 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
2536 /*
2537 * Hmm. Let's see if we can try another page...
2538 * If we've already done that, give up on compression
2539 * for this device and remember this for the future
2540 * and attempt the request without asking for compression
2541 * info.
2542 */
2543 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2544 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2545 goto retry;
2546 }
2547 softc->quirks |= SA_QUIRK_NOCOMP;
2548 free(mode_buffer, M_TEMP);
2549 goto retry;
2550 } else if (status == CAM_SCSI_STATUS_ERROR) {
2551 /* Tell the user about the fatal error. */
2552 scsi_sense_print(&ccb->csio);
2553 goto sagetparamsexit;
2554 }
2555
2556 /*
2557 * If the user only wants the compression information, and
2558 * the device doesn't send back the block descriptor, it's
2559 * no big deal. If the user wants more than just
2560 * compression, though, and the device doesn't pass back the
2561 * block descriptor, we need to send another mode sense to
2562 * get the block descriptor.
2563 */
2564 if ((mode_hdr->blk_desc_len == 0) &&
2565 (params_to_get & SA_PARAM_COMPRESSION) &&
2566 (params_to_get & ~(SA_PARAM_COMPRESSION))) {
2567
2568 /*
2569 * Decrease the mode buffer length by the size of
2570 * the compression page, to make sure the data
2571 * there doesn't get overwritten.
2572 */
2573 mode_buffer_len -= sizeof (sa_comp_t);
2574
2575 /*
2576 * Now move the compression page that we presumably
2577 * got back down the memory chunk a little bit so
2578 * it doesn't get spammed.
2579 */
2580 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
2581 bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
2582
2583 /*
2584 * Now, we issue another mode sense and just ask
2585 * for the block descriptor, etc.
2586 */
2587
2588 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2589 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
2590 mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
2591 SCSIOP_TIMEOUT);
2592
2593 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2594 &softc->device_stats);
2595 QFRLS(ccb);
2596
2597 if (error != 0)
2598 goto sagetparamsexit;
2599 }
2600
2601 if (params_to_get & SA_PARAM_BLOCKSIZE)
2602 *blocksize = scsi_3btoul(mode_blk->blklen);
2603
2604 if (params_to_get & SA_PARAM_NUMBLOCKS)
2605 *numblocks = scsi_3btoul(mode_blk->nblocks);
2606
2607 if (params_to_get & SA_PARAM_BUFF_MODE)
2608 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
2609
2610 if (params_to_get & SA_PARAM_DENSITY)
2611 *density = mode_blk->density;
2612
2613 if (params_to_get & SA_PARAM_WP)
2614 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
2615
2616 if (params_to_get & SA_PARAM_SPEED)
2617 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
2618
2619 if (params_to_get & SA_PARAM_COMPRESSION) {
2620 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
2621 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2622 struct scsi_data_compression_page *cp = &ntcs->dcomp;
2623 *comp_supported =
2624 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
2625 *comp_enabled =
2626 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
2627 *comp_algorithm = scsi_4btoul(cp->comp_algorithm);
2628 } else {
2629 struct scsi_dev_conf_page *cp = &ntcs->dconf;
2630 /*
2631 * We don't really know whether this device supports
2632 * Data Compression if the the algorithm field is
2633 * zero. Just say we do.
2634 */
2635 *comp_supported = TRUE;
2636 *comp_enabled =
2637 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
2638 *comp_algorithm = cp->sel_comp_alg;
2639 }
2640 if (tcs != NULL)
2641 bcopy(ntcs, tcs, sizeof (sa_comp_t));
2642 }
2643
2644 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2645 int idx;
2646 char *xyz = mode_buffer;
2647 xpt_print_path(periph->path);
2648 printf("Mode Sense Data=");
2649 for (idx = 0; idx < mode_buffer_len; idx++)
2650 printf(" 0x%02x", xyz[idx] & 0xff);
2651 printf("\n");
2652 }
2653
2654sagetparamsexit:
2655
2656 xpt_release_ccb(ccb);
2657 free(mode_buffer, M_TEMP);
2658 return (error);
2659}
2660
2661/*
2662 * The purpose of this function is to set one of four different parameters
2663 * for a tape drive:
2664 * - blocksize
2665 * - density
2666 * - compression / compression algorithm
2667 * - buffering mode
2668 *
2669 * The assumption is that this will be called from saioctl(), and therefore
2670 * from a process context. Thus the waiting malloc calls below. If that
2671 * assumption ever changes, the malloc calls should be changed to be
2672 * NOWAIT mallocs.
2673 *
2674 * Any or all of the four parameters may be set when this function is
2675 * called. It should handle setting more than one parameter at once.
2676 */
2677static int
2678sasetparams(struct cam_periph *periph, sa_params params_to_set,
2679 u_int32_t blocksize, u_int8_t density, u_int32_t calg,
2680 u_int32_t sense_flags)
2681{
2682 struct sa_softc *softc;
2683 u_int32_t current_blocksize;
2684 u_int32_t current_calg;
2685 u_int8_t current_density;
2686 u_int8_t current_speed;
2687 int comp_enabled, comp_supported;
2688 void *mode_buffer;
2689 int mode_buffer_len;
2690 struct scsi_mode_header_6 *mode_hdr;
2691 struct scsi_mode_blk_desc *mode_blk;
2692 sa_comp_t *ccomp, *cpage;
2693 int buff_mode;
2694 union ccb *ccb = NULL;
2695 int error;
2696
2697 softc = (struct sa_softc *)periph->softc;
2698
898d961b 2699 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_INTWAIT);
984263bc
MD
2700
2701 /*
2702 * Since it doesn't make sense to set the number of blocks, or
2703 * write protection, we won't try to get the current value. We
2704 * always want to get the blocksize, so we can set it back to the
2705 * proper value.
2706 */
2707 error = sagetparams(periph,
2708 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED,
2709 &current_blocksize, &current_density, NULL, &buff_mode, NULL,
2710 &current_speed, &comp_supported, &comp_enabled,
2711 &current_calg, ccomp);
2712
2713 if (error != 0) {
2714 free(ccomp, M_TEMP);
2715 return (error);
2716 }
2717
2718 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2719 if (params_to_set & SA_PARAM_COMPRESSION)
2720 mode_buffer_len += sizeof (sa_comp_t);
2721
898d961b 2722 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO);
984263bc
MD
2723
2724 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2725 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2726
2727 ccb = cam_periph_getccb(periph, 1);
2728
2729retry:
2730
2731 if (params_to_set & SA_PARAM_COMPRESSION) {
2732 if (mode_blk) {
2733 cpage = (sa_comp_t *)&mode_blk[1];
2734 } else {
2735 cpage = (sa_comp_t *)&mode_hdr[1];
2736 }
2737 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2738 cpage->hdr.pagecode &= ~0x80;
2739 } else
2740 cpage = NULL;
2741
2742 /*
2743 * If the caller wants us to set the blocksize, use the one they
2744 * pass in. Otherwise, use the blocksize we got back from the
2745 * mode select above.
2746 */
2747 if (mode_blk) {
2748 if (params_to_set & SA_PARAM_BLOCKSIZE)
2749 scsi_ulto3b(blocksize, mode_blk->blklen);
2750 else
2751 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2752
2753 /*
2754 * Set density if requested, else preserve old density.
2755 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2756 * devices, else density we've latched up in our softc.
2757 */
2758 if (params_to_set & SA_PARAM_DENSITY) {
2759 mode_blk->density = density;
2760 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2761 mode_blk->density = SCSI_SAME_DENSITY;
2762 } else {
2763 mode_blk->density = softc->media_density;
2764 }
2765 }
2766
2767 /*
2768 * For mode selects, these two fields must be zero.
2769 */
2770 mode_hdr->data_length = 0;
2771 mode_hdr->medium_type = 0;
2772
2773 /* set the speed to the current value */
2774 mode_hdr->dev_spec = current_speed;
2775
2776 /* set single-initiator buffering mode */
2777 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
2778
2779 if (mode_blk)
2780 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
2781 else
2782 mode_hdr->blk_desc_len = 0;
2783
2784 /*
2785 * First, if the user wants us to set the compression algorithm or
2786 * just turn compression on, check to make sure that this drive
2787 * supports compression.
2788 */
2789 if (params_to_set & SA_PARAM_COMPRESSION) {
2790 /*
2791 * If the compression algorithm is 0, disable compression.
2792 * If the compression algorithm is non-zero, enable
2793 * compression and set the compression type to the
2794 * specified compression algorithm, unless the algorithm is
2795 * MT_COMP_ENABLE. In that case, we look at the
2796 * compression algorithm that is currently set and if it is
2797 * non-zero, we leave it as-is. If it is zero, and we have
2798 * saved a compression algorithm from a time when
2799 * compression was enabled before, set the compression to
2800 * the saved value.
2801 */
2802 switch (ccomp->hdr.pagecode & ~0x80) {
2803 case SA_DATA_COMPRESSION_PAGE:
2804 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
2805 struct scsi_data_compression_page *dcp = &cpage->dcomp;
2806 if (calg == 0) {
2807 /*
2808 * Disable compression, but leave the
2809 * decompression and the capability bit
2810 * alone.
2811 */
2812 dcp->dce_and_dcc = SA_DCP_DCC;
2813 dcp->dde_and_red |= SA_DCP_DDE;
2814 break;
2815 }
2816 /* enable compression && decompression */
2817 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
2818 dcp->dde_and_red |= SA_DCP_DDE;
2819 /*
2820 * If there, use compression algorithm from caller.
2821 * Otherwise, if there's a saved compression algorithm
2822 * and there is no current algorithm, use the saved
2823 * algorithm. Else parrot back what we got and hope
2824 * for the best.
2825 */
2826 if (calg != MT_COMP_ENABLE) {
2827 scsi_ulto4b(calg, dcp->comp_algorithm);
2828 scsi_ulto4b(calg, dcp->decomp_algorithm);
2829 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
2830 softc->saved_comp_algorithm != 0) {
2831 scsi_ulto4b(softc->saved_comp_algorithm,
2832 dcp->comp_algorithm);
2833 scsi_ulto4b(softc->saved_comp_algorithm,
2834 dcp->decomp_algorithm);
2835 }
2836 break;
2837 }
2838 case SA_DEVICE_CONFIGURATION_PAGE:
2839 {
2840 struct scsi_dev_conf_page *dcp = &cpage->dconf;
2841 if (calg == 0) {
2842 dcp->sel_comp_alg = SA_COMP_NONE;
2843 break;
2844 }
2845 if (calg != MT_COMP_ENABLE) {
2846 dcp->sel_comp_alg = calg;
2847 } else if (dcp->sel_comp_alg == SA_COMP_NONE &&
2848 softc->saved_comp_algorithm != 0) {
2849 dcp->sel_comp_alg = softc->saved_comp_algorithm;
2850 }
2851 break;
2852 }
2853 default:
2854 /*
2855 * The drive doesn't seem to support compression,
2856 * so turn off the set compression bit.
2857 */
2858 params_to_set &= ~SA_PARAM_COMPRESSION;
2859 xpt_print_path(periph->path);
2860 printf("device does not seem to support compression\n");
2861
2862 /*
2863 * If that was the only thing the user wanted us to set,
2864 * clean up allocated resources and return with
2865 * 'operation not supported'.
2866 */
2867 if (params_to_set == SA_PARAM_NONE) {
2868 free(mode_buffer, M_TEMP);
2869 xpt_release_ccb(ccb);
2870 return (ENODEV);
2871 }
2872
2873 /*
2874 * That wasn't the only thing the user wanted us to set.
2875 * So, decrease the stated mode buffer length by the
2876 * size of the compression mode page.
2877 */
2878 mode_buffer_len -= sizeof(sa_comp_t);
2879 }
2880 }
2881
2882 /* It is safe to retry this operation */
2883 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
2884 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
2885 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2886
2887 error = cam_periph_runccb(ccb, saerror, 0,
2888 sense_flags, &softc->device_stats);
2889 QFRLS(ccb);
2890
2891 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2892 int idx;
2893 char *xyz = mode_buffer;
2894 xpt_print_path(periph->path);
2895 printf("Err%d, Mode Select Data=", error);
2896 for (idx = 0; idx < mode_buffer_len; idx++)
2897 printf(" 0x%02x", xyz[idx] & 0xff);
2898 printf("\n");
2899 }
2900
2901
2902 if (error) {
2903 /*
2904 * If we can, try without setting density/blocksize.
2905 */
2906 if (mode_blk) {
2907 if ((params_to_set &
2908 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
2909 mode_blk = NULL;
2910 goto retry;
2911 }
2912 } else {
2913 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2914 cpage = (sa_comp_t *)&mode_blk[1];
2915 }
2916
2917 /*
2918 * If we were setting the blocksize, and that failed, we
2919 * want to set it to its original value. If we weren't
2920 * setting the blocksize, we don't want to change it.
2921 */
2922 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2923
2924 /*
2925 * Set density if requested, else preserve old density.
2926 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2927 * devices, else density we've latched up in our softc.
2928 */
2929 if (params_to_set & SA_PARAM_DENSITY) {
2930 mode_blk->density = current_density;
2931 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2932 mode_blk->density = SCSI_SAME_DENSITY;
2933 } else {
2934 mode_blk->density = softc->media_density;
2935 }
2936
2937 if (params_to_set & SA_PARAM_COMPRESSION)
2938 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2939
2940 /*
2941 * The retry count is the only CCB field that might have been
2942 * changed that we care about, so reset it back to 1.
2943 */
2944 ccb->ccb_h.retry_count = 1;
2945 cam_periph_runccb(ccb, saerror, 0, sense_flags,
2946 &softc->device_stats);
2947 QFRLS(ccb);
2948 }
2949
2950 xpt_release_ccb(ccb);
2951
2952 if (ccomp != NULL)
2953 free(ccomp, M_TEMP);
2954
2955 if (params_to_set & SA_PARAM_COMPRESSION) {
2956 if (error) {
2957 softc->flags &= ~SA_FLAG_COMP_ENABLED;
2958 /*
2959 * Even if we get an error setting compression,
2960 * do not say that we don't support it. We could
2961 * have been wrong, or it may be media specific.
2962 * softc->flags &= ~SA_FLAG_COMP_SUPP;
2963 */
2964 softc->saved_comp_algorithm = softc->comp_algorithm;
2965 softc->comp_algorithm = 0;
2966 } else {
2967 softc->flags |= SA_FLAG_COMP_ENABLED;
2968 softc->comp_algorithm = calg;
2969 }
2970 }
2971
2972 free(mode_buffer, M_TEMP);
2973 return (error);
2974}
2975
2976static void
2977saprevent(struct cam_periph *periph, int action)
2978{
2979 struct sa_softc *softc;
2980 union ccb *ccb;
2981 int error, sf;
2982
2983 softc = (struct sa_softc *)periph->softc;
2984
2985 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
2986 return;
2987 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
2988 return;
2989
2990 /*
2991 * We can be quiet about illegal requests.
2992 */
2993 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2994 sf = 0;
2995 } else
2996 sf = SF_QUIET_IR;
2997
2998 ccb = cam_periph_getccb(periph, 1);
2999
3000 /* It is safe to retry this operation */
3001 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
3002 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3003
3004 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats);
3005 QFRLS(ccb);
3006 if (error == 0) {
3007 if (action == PR_ALLOW)
3008 softc->flags &= ~SA_FLAG_TAPE_LOCKED;
3009 else
3010 softc->flags |= SA_FLAG_TAPE_LOCKED;
3011 }
3012
3013 xpt_release_ccb(ccb);
3014}
3015
3016static int
3017sarewind(struct cam_periph *periph)
3018{
3019 union ccb *ccb;
3020 struct sa_softc *softc;
3021 int error;
3022
3023 softc = (struct sa_softc *)periph->softc;
3024
3025 ccb = cam_periph_getccb(periph, 1);
3026
3027 /* It is safe to retry this operation */
3028 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3029 SSD_FULL_SIZE, REWIND_TIMEOUT);
3030
3031 softc->dsreg = MTIO_DSREG_REW;
3032 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3033 softc->dsreg = MTIO_DSREG_REST;
3034
3035 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3036 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3037
3038 xpt_release_ccb(ccb);
3039 if (error == 0)
3040 softc->fileno = softc->blkno = (daddr_t) 0;
3041 else
3042 softc->fileno = softc->blkno = (daddr_t) -1;
3043 return (error);
3044}
3045
3046static int
3047saspace(struct cam_periph *periph, int count, scsi_space_code code)
3048{
3049 union ccb *ccb;
3050 struct sa_softc *softc;
3051 int error;
3052
3053 softc = (struct sa_softc *)periph->softc;
3054
3055 ccb = cam_periph_getccb(periph, 1);
3056
3057 /* This cannot be retried */
3058
3059 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
3060 SSD_FULL_SIZE, SPACE_TIMEOUT);
3061
3062 /*
3063 * Clear residual because we will be using it.
3064 */
3065 softc->last_ctl_resid = 0;
3066
3067 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
3068 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3069 softc->dsreg = MTIO_DSREG_REST;
3070
3071 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3072 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3073
3074 xpt_release_ccb(ccb);
3075
3076 /*
3077 * If a spacing operation has failed, we need to invalidate
3078 * this mount.
3079 *
3080 * If the spacing operation was setmarks or to end of recorded data,
3081 * we no longer know our relative position.
3082 *
3083 * If the spacing operations was spacing files in reverse, we
3084 * take account of the residual, but still check against less
3085 * than zero- if we've gone negative, we must have hit BOT.
3086 *
3087 * If the spacing operations was spacing records in reverse and
3088 * we have a residual, we've either hit BOT or hit a filemark.
3089 * In the former case, we know our new record number (0). In
3090 * the latter case, we have absolutely no idea what the real
3091 * record number is- we've stopped between the end of the last
3092 * record in the previous file and the filemark that stopped
3093 * our spacing backwards.
3094 */
3095 if (error) {
3096 softc->fileno = softc->blkno = (daddr_t) -1;
3097 } else if (code == SS_SETMARKS || code == SS_EOD) {
3098 softc->fileno = softc->blkno = (daddr_t) -1;
3099 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
3100 softc->fileno += (count - softc->last_ctl_resid);
3101 if (softc->fileno < 0) /* we must of hit BOT */
3102 softc->fileno = 0;
3103 softc->blkno = 0;
3104 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
3105 softc->blkno += (count - softc->last_ctl_resid);
3106 if (count < 0) {
3107 if (softc->last_ctl_resid || softc->blkno < 0) {
3108 if (softc->fileno == 0) {
3109 softc->blkno = 0;
3110 } else {
3111 softc->blkno = (daddr_t) -1;
3112 }
3113 }
3114 }
3115 }
3116 return (error);
3117}
3118
3119static int
3120sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
3121{
3122 union ccb *ccb;
3123 struct sa_softc *softc;
3124 int error, nwm = 0;
3125
3126 softc = (struct sa_softc *)periph->softc;
3127
3128 ccb = cam_periph_getccb(periph, 1);
3129 /*
3130 * Clear residual because we will be using it.
3131 */
3132 softc->last_ctl_resid = 0;
3133
3134 softc->dsreg = MTIO_DSREG_FMK;
3135 /* this *must* not be retried */
3136 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
3137 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
3138 softc->dsreg = MTIO_DSREG_REST;
3139
3140
3141 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3142
3143 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3144 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3145
3146 if (error == 0 && nmarks) {
3147 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3148 nwm = nmarks - softc->last_ctl_resid;
3149 softc->filemarks += nwm;
3150 }
3151
3152 xpt_release_ccb(ccb);
3153
3154 /*
3155 * Update relative positions (if we're doing that).
3156 */
3157 if (error) {
3158 softc->fileno = softc->blkno = (daddr_t) -1;
3159 } else if (softc->fileno != (daddr_t) -1) {
3160 softc->fileno += nwm;
3161 softc->blkno = 0;
3162 }
3163 return (error);
3164}
3165
3166static int
3167sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3168{
3169 struct scsi_tape_position_data loc;
3170 union ccb *ccb;
3171 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3172 int error;
3173
3174 /*
3175 * We try and flush any buffered writes here if we were writing
3176 * and we're trying to get hardware block position. It eats
3177 * up performance substantially, but I'm wary of drive firmware.
3178 *
3179 * I think that *logical* block position is probably okay-
3180 * but hardware block position might have to wait for data
3181 * to hit media to be valid. Caveat Emptor.
3182 */
3183
3184 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
3185 error = sawritefilemarks(periph, 0, 0);
3186 if (error && error != EACCES)
3187 return (error);
3188 }
3189
3190 ccb = cam_periph_getccb(periph, 1);
3191 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3192 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3193 softc->dsreg = MTIO_DSREG_RBSY;
3194 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3195 softc->dsreg = MTIO_DSREG_REST;
3196 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3197 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3198
3199 if (error == 0) {
3200 if (loc.flags & SA_RPOS_UNCERTAIN) {
3201 error = EINVAL; /* nothing is certain */
3202 } else {
3203 *blkptr = scsi_4btoul(loc.firstblk);
3204 }
3205 }
3206
3207 xpt_release_ccb(ccb);
3208 return (error);
3209}
3210
3211static int
3212sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3213{
3214 union ccb *ccb;
3215 struct sa_softc *softc;
3216 int error;
3217
3218 /*
3219 * We used to try and flush any buffered writes here.
3220 * Now we push this onto user applications to either
3221 * flush the pending writes themselves (via a zero count
3222 * WRITE FILEMARKS command) or they can trust their tape
3223 * drive to do this correctly for them.
3224 */
3225
3226 softc = (struct sa_softc *)periph->softc;
3227 ccb = cam_periph_getccb(periph, 1);
3228
3229
3230 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3231 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT);
3232
3233
3234 softc->dsreg = MTIO_DSREG_POS;
3235 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3236 softc->dsreg = MTIO_DSREG_REST;
3237 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3238 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3239 xpt_release_ccb(ccb);
3240 /*
3241 * Note relative file && block number position as now unknown.
3242 */
3243 softc->fileno = softc->blkno = (daddr_t) -1;
3244 return (error);
3245}
3246
3247static int
3248saretension(struct cam_periph *periph)
3249{
3250 union ccb *ccb;
3251 struct sa_softc *softc;
3252 int error;
3253
3254 softc = (struct sa_softc *)periph->softc;
3255
3256 ccb = cam_periph_getccb(periph, 1);
3257
3258 /* It is safe to retry this operation */
3259 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3260 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
3261
3262 softc->dsreg = MTIO_DSREG_TEN;
3263 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3264 softc->dsreg = MTIO_DSREG_REST;
3265
3266 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3267 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3268 xpt_release_ccb(ccb);
3269 if (error == 0)
3270 softc->fileno = softc->blkno = (daddr_t) 0;
3271 else
3272 softc->fileno = softc->blkno = (daddr_t) -1;
3273 return (error);
3274}
3275
3276static int
3277sareservereleaseunit(struct cam_periph *periph, int reserve)
3278{
3279 union ccb *ccb;
3280 struct sa_softc *softc;
3281 int error;
3282
3283 softc = (struct sa_softc *)periph->softc;
3284 ccb = cam_periph_getccb(periph, 1);
3285
3286 /* It is safe to retry this operation */
3287 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
3288 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
3289 softc->dsreg = MTIO_DSREG_RBSY;
3290 error = cam_periph_runccb(ccb, saerror, 0,
3291 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats);
3292 softc->dsreg = MTIO_DSREG_REST;
3293 QFRLS(ccb);
3294 xpt_release_ccb(ccb);
3295
3296 /*
3297 * If the error was Illegal Request, then the device doesn't support
3298 * RESERVE/RELEASE. This is not an error.
3299 */
3300 if (error == EINVAL) {
3301 error = 0;
3302 }
3303
3304 return (error);
3305}
3306
3307static int
3308saloadunload(struct cam_periph *periph, int load)
3309{
3310 union ccb *ccb;
3311 struct sa_softc *softc;
3312 int error;
3313
3314 softc = (struct sa_softc *)periph->softc;
3315
3316 ccb = cam_periph_getccb(periph, 1);
3317
3318 /* It is safe to retry this operation */
3319 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3320 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
3321
3322 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
3323 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3324 softc->dsreg = MTIO_DSREG_REST;
3325 QFRLS(ccb);
3326 xpt_release_ccb(ccb);
3327
3328 if (error || load == 0)
3329 softc->fileno = softc->blkno = (daddr_t) -1;
3330 else if (error == 0)
3331 softc->fileno = softc->blkno = (daddr_t) 0;
3332 return (error);
3333}
3334
3335static int
3336saerase(struct cam_periph *periph, int longerase)
3337{
3338
3339 union ccb *ccb;
3340 struct sa_softc *softc;
3341 int error;
3342
3343 softc = (struct sa_softc *)periph->softc;
3344
3345 ccb = cam_periph_getccb(periph, 1);
3346
3347 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
3348 SSD_FULL_SIZE, ERASE_TIMEOUT);
3349
3350 softc->dsreg = MTIO_DSREG_ZER;
3351 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3352 softc->dsreg = MTIO_DSREG_REST;
3353
3354 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3355 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3356 xpt_release_ccb(ccb);
3357 return (error);
3358}
3359
3360#endif /* _KERNEL */
3361
3362/*
3363 * Read tape block limits command.
3364 */
3365void
3366scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
3367 void (*cbfcnp)(struct cam_periph *, union ccb *),
3368 u_int8_t tag_action,
3369 struct scsi_read_block_limits_data *rlimit_buf,
3370 u_int8_t sense_len, u_int32_t timeout)
3371{
3372 struct scsi_read_block_limits *scsi_cmd;
3373
3374 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3375 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
3376 sizeof(*scsi_cmd), timeout);
3377
3378 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
3379 bzero(scsi_cmd, sizeof(*scsi_cmd));
3380 scsi_cmd->opcode = READ_BLOCK_LIMITS;
3381}
3382
3383void
3384scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
3385 void (*cbfcnp)(struct cam_periph *, union ccb *),
3386 u_int8_t tag_action, int readop, int sli,
3387 int fixed, u_int32_t length, u_int8_t *data_ptr,
3388 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
3389{
3390 struct scsi_sa_rw *scsi_cmd;
3391
3392 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
3393 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE;
3394 scsi_cmd->sli_fixed = 0;
3395 if (sli && readop)
3396 scsi_cmd->sli_fixed |= SAR_SLI;
3397 if (fixed)
3398 scsi_cmd->sli_fixed |= SARW_FIXED;
3399 scsi_ulto3b(length, scsi_cmd->length);
3400 scsi_cmd->control = 0;
3401
3402 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT,
3403 tag_action, data_ptr, dxfer_len, sense_len,
3404 sizeof(*scsi_cmd), timeout);
3405}
3406
3407void
3408scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
3409 void (*cbfcnp)(struct cam_periph *, union ccb *),
3410 u_int8_t tag_action, int immediate, int eot,
3411 int reten, int load, u_int8_t sense_len,
3412 u_int32_t timeout)
3413{
3414 struct scsi_load_unload *scsi_cmd;
3415
3416 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
3417 bzero(scsi_cmd, sizeof(*scsi_cmd));
3418 scsi_cmd->opcode = LOAD_UNLOAD;
3419 if (immediate)
3420 scsi_cmd->immediate = SLU_IMMED;
3421 if (eot)
3422 scsi_cmd->eot_reten_load |= SLU_EOT;
3423 if (reten)
3424 scsi_cmd->eot_reten_load |= SLU_RETEN;
3425 if (load)
3426 scsi_cmd->eot_reten_load |= SLU_LOAD;
3427
3428 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3429 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
3430}
3431
3432void
3433scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
3434 void (*cbfcnp)(struct cam_periph *, union ccb *),
3435 u_int8_t tag_action, int immediate, u_int8_t sense_len,
3436 u_int32_t timeout)
3437{
3438 struct scsi_rewind *scsi_cmd;
3439
3440 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
3441 bzero(scsi_cmd, sizeof(*scsi_cmd));
3442 scsi_cmd->opcode = REWIND;
3443 if (immediate)
3444 scsi_cmd->immediate = SREW_IMMED;
3445
3446 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3447 0, sense_len, sizeof(*scsi_cmd), timeout);
3448}
3449
3450void
3451scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
3452 void (*cbfcnp)(struct cam_periph *, union ccb *),
3453 u_int8_t tag_action, scsi_space_code code,
3454 u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
3455{
3456 struct scsi_space *scsi_cmd;
3457
3458 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
3459 scsi_cmd->opcode = SPACE;
3460 scsi_cmd->code = code;
3461 scsi_ulto3b(count, scsi_cmd->count);
3462 scsi_cmd->control = 0;
3463
3464 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3465 0, sense_len, sizeof(*scsi_cmd), timeout);
3466}
3467
3468void
3469scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
3470 void (*cbfcnp)(struct cam_periph *, union ccb *),
3471 u_int8_t tag_action, int immediate, int setmark,
3472 u_int32_t num_marks, u_int8_t sense_len,
3473 u_int32_t timeout)
3474{
3475 struct scsi_write_filemarks *scsi_cmd;
3476
3477 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
3478 bzero(scsi_cmd, sizeof(*scsi_cmd));
3479 scsi_cmd->opcode = WRITE_FILEMARKS;
3480 if (immediate)
3481 scsi_cmd->byte2 |= SWFMRK_IMMED;
3482 if (setmark)
3483 scsi_cmd->byte2 |= SWFMRK_WSMK;
3484
3485 scsi_ulto3b(num_marks, scsi_cmd->num_marks);
3486
3487 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3488 0, sense_len, sizeof(*scsi_cmd), timeout);
3489}
3490
3491/*
3492 * The reserve and release unit commands differ only by their opcodes.
3493 */
3494void
3495scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
3496 void (*cbfcnp)(struct cam_periph *, union ccb *),
3497 u_int8_t tag_action, int third_party,
3498 int third_party_id, u_int8_t sense_len,
3499 u_int32_t timeout, int reserve)
3500{
3501 struct scsi_reserve_release_unit *scsi_cmd;
3502
3503 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
3504 bzero(scsi_cmd, sizeof(*scsi_cmd));
3505
3506 if (reserve)
3507 scsi_cmd->opcode = RESERVE_UNIT;
3508 else
3509 scsi_cmd->opcode = RELEASE_UNIT;
3510
3511 if (third_party) {
3512 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
3513 scsi_cmd->lun_thirdparty |=
3514 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
3515 }
3516
3517 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3518 0, sense_len, sizeof(*scsi_cmd), timeout);
3519}
3520
3521void
3522scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
3523 void (*cbfcnp)(struct cam_periph *, union ccb *),
3524 u_int8_t tag_action, int immediate, int long_erase,
3525 u_int8_t sense_len, u_int32_t timeout)
3526{
3527 struct scsi_erase *scsi_cmd;
3528
3529 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
3530 bzero(scsi_cmd, sizeof(*scsi_cmd));
3531
3532 scsi_cmd->opcode = ERASE;
3533
3534 if (immediate)
3535 scsi_cmd->lun_imm_long |= SE_IMMED;
3536
3537 if (long_erase)
3538 scsi_cmd->lun_imm_long |= SE_LONG;
3539
3540 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3541 0, sense_len, sizeof(*scsi_cmd), timeout);
3542}
3543
3544/*
3545 * Read Tape Position command.
3546 */
3547void
3548scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
3549 void (*cbfcnp)(struct cam_periph *, union ccb *),
3550 u_int8_t tag_action, int hardsoft,
3551 struct scsi_tape_position_data *sbp,
3552 u_int8_t sense_len, u_int32_t timeout)
3553{
3554 struct scsi_tape_read_position *scmd;
3555
3556 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3557 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
3558 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
3559 bzero(scmd, sizeof(*scmd));
3560 scmd->opcode = READ_POSITION;
3561 scmd->byte1 = hardsoft;
3562}
3563
3564/*
3565 * Set Tape Position command.
3566 */
3567void
3568scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries,
3569 void (*cbfcnp)(struct cam_periph *, union ccb *),
3570 u_int8_t tag_action, int hardsoft, u_int32_t blkno,
3571 u_int8_t sense_len, u_int32_t timeout)
3572{
3573 struct scsi_tape_locate *scmd;
3574
3575 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3576 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout);
3577 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
3578 bzero(scmd, sizeof(*scmd));
3579 scmd->opcode = LOCATE;
3580 if (hardsoft)
3581 scmd->byte1 |= SA_SPOS_BT;
3582 scsi_ulto4b(blkno, scmd->blkaddr);
3583}