Create 'k' versions of the kernel malloc API.
[dragonfly.git] / sys / bus / cam / scsi / scsi_sa.c
CommitLineData
984263bc
MD
1/*
2 * $FreeBSD: src/sys/cam/scsi/scsi_sa.c,v 1.45.2.13 2002/12/17 17:08:50 trhodes Exp $
fef8985e 3 * $DragonFly: src/sys/bus/cam/scsi/scsi_sa.c,v 1.18 2006/07/28 02:17:32 dillon Exp $
984263bc
MD
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
984263bc
MD
41#include <sys/buf.h>
42#include <sys/malloc.h>
05220613 43#endif
984263bc
MD
44#include <sys/mtio.h>
45#include <sys/conf.h>
05220613 46#ifdef _KERNEL
3020e3be
MD
47#include <sys/proc.h>
48#include <sys/buf2.h>
4e01b467 49#include <sys/thread2.h>
05220613 50#endif
984263bc
MD
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
1f2de5d4
MD
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
1f2de5d4
MD
66#include "scsi_all.h"
67#include "scsi_message.h"
68#include "scsi_sa.h"
984263bc
MD
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
81b5c339 116#define ccb_bio ppriv_ptr1
984263bc
MD
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
e4c9c0c8
MD
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
984263bc
MD
203
204struct sa_softc {
205 sa_state state;
206 sa_flags flags;
207 sa_quirks quirks;
81b5c339 208 struct bio_queue_head bio_queue;
984263bc
MD
209 int queue_count;
210 struct devstat device_stats;
984263bc
MD
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
fef8985e
MD
428static struct dev_ops sa_ops = {
429 { "sa", SA_CDEV_MAJOR, D_TAPE },
430 .d_open = saopen,
431 .d_close = saclose,
432 .d_read = physread,
433 .d_write = physwrite,
434 .d_ioctl = saioctl,
435 .d_strategy = sastrategy,
984263bc
MD
436};
437
438static struct extend_array *saperiphs;
439
440static int
fef8985e 441saopen(struct dev_open_args *ap)
984263bc 442{
fef8985e 443 dev_t dev = ap->a_head.a_dev;
984263bc
MD
444 struct cam_periph *periph;
445 struct sa_softc *softc;
446 int unit;
447 int mode;
448 int density;
449 int error;
984263bc
MD
450
451 unit = SAUNIT(dev);
452 mode = SAMODE(dev);
453 density = SADENSITY(dev);
454
4e01b467 455 crit_enter();
984263bc
MD
456 periph = cam_extend_get(saperiphs, unit);
457 if (periph == NULL) {
4e01b467 458 crit_exit();
984263bc
MD
459 return (ENXIO);
460 }
461 softc = (struct sa_softc *)periph->softc;
377d4740 462 if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
4e01b467 463 crit_exit();
984263bc
MD
464 return (error);
465 }
4e01b467 466 crit_exit();
984263bc
MD
467
468 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
469 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
470
471 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
472 cam_periph_unlock(periph);
473 return (ENXIO);
474 }
475 if (SA_IS_CTRL(dev)) {
476 softc->ctrl_mode = 1;
477 cam_periph_unlock(periph);
478 return (0);
479 }
480
481
482 if (softc->flags & SA_FLAG_OPEN) {
483 error = EBUSY;
484 } else if (softc->flags & SA_FLAG_INVALID) {
485 error = ENXIO;
486 } else {
487 /*
488 * The function samount ensures media is loaded and ready.
489 * It also does a device RESERVE if the tape isn't yet mounted.
490 */
fef8985e 491 error = samount(periph, ap->a_oflags, dev);
984263bc
MD
492 }
493
494 if (error) {
495 cam_periph_release(periph);
496 } else {
497 saprevent(periph, PR_PREVENT);
498 softc->flags |= SA_FLAG_OPEN;
499 }
500 cam_periph_unlock(periph);
501 return (error);
502}
503
504static int
fef8985e 505saclose(struct dev_close_args *ap)
984263bc 506{
fef8985e 507 dev_t dev = ap->a_head.a_dev;
984263bc
MD
508 struct cam_periph *periph;
509 struct sa_softc *softc;
510 int unit, mode, error, writing, tmp;
511 int closedbits = SA_FLAG_OPEN;
512
513 unit = SAUNIT(dev);
514 mode = SAMODE(dev);
515 periph = cam_extend_get(saperiphs, unit);
516 if (periph == NULL)
517 return (ENXIO);
518
519 softc = (struct sa_softc *)periph->softc;
520
521 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
522 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
523
524
377d4740 525 if ((error = cam_periph_lock(periph, 0)) != 0) {
984263bc
MD
526 return (error);
527 }
528
529 if (SA_IS_CTRL(dev)) {
530 softc->ctrl_mode = 0;
531 cam_periph_release(periph);
532 cam_periph_unlock(periph);
533 return (0);
534 }
535
536 /*
537 * Were we writing the tape?
538 */
539 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0;
540
541 /*
542 * See whether or not we need to write filemarks. If this
543 * fails, we probably have to assume we've lost tape
544 * position.
545 */
546 error = sacheckeod(periph);
547 if (error) {
548 xpt_print_path(periph->path);
549 printf("failed to write terminating filemark(s)\n");
550 softc->flags |= SA_FLAG_TAPE_FROZEN;
551 }
552
553 /*
554 * Whatever we end up doing, allow users to eject tapes from here on.
555 */
556 saprevent(periph, PR_ALLOW);
557
558 /*
559 * Decide how to end...
560 */
561 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
562 closedbits |= SA_FLAG_TAPE_FROZEN;
563 } else switch (mode) {
564 case SA_MODE_OFFLINE:
565 /*
566 * An 'offline' close is an unconditional release of
567 * frozen && mount conditions, irrespective of whether
568 * these operations succeeded. The reason for this is
569 * to allow at least some kind of programmatic way
570 * around our state getting all fouled up. If somebody
571 * issues an 'offline' command, that will be allowed
572 * to clear state.
573 */
0e224b5d
SW
574 sarewind(periph);
575 saloadunload(periph, FALSE);
984263bc
MD
576 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN;
577 break;
578 case SA_MODE_REWIND:
579 /*
580 * If the rewind fails, return an error- if anyone cares,
581 * but not overwriting any previous error.
582 *
583 * We don't clear the notion of mounted here, but we do
584 * clear the notion of frozen if we successfully rewound.
585 */
586 tmp = sarewind(periph);
587 if (tmp) {
588 if (error != 0)
589 error = tmp;
590 } else {
591 closedbits |= SA_FLAG_TAPE_FROZEN;
592 }
593 break;
594 case SA_MODE_NOREWIND:
595 /*
596 * If we're not rewinding/unloading the tape, find out
597 * whether we need to back up over one of two filemarks
598 * we wrote (if we wrote two filemarks) so that appends
599 * from this point on will be sane.
600 */
601 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) {
602 tmp = saspace(periph, -1, SS_FILEMARKS);
603 if (tmp) {
604 xpt_print_path(periph->path);
605 printf("unable to backspace over one of double"
606 " filemarks at end of tape\n");
607 xpt_print_path(periph->path);
608 printf("it is possible that this device"
609 " needs a SA_QUIRK_1FM quirk set for it\n");
610 softc->flags |= SA_FLAG_TAPE_FROZEN;
611 }
612 }
613 break;
614 default:
615 xpt_print_path(periph->path);
616 panic("unknown mode 0x%x in saclose\n", mode);
617 /* NOTREACHED */
618 break;
619 }
620
621 /*
622 * We wish to note here that there are no more filemarks to be written.
623 */
624 softc->filemarks = 0;
625 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
626
627 /*
628 * And we are no longer open for business.
629 */
630 softc->flags &= ~closedbits;
631
632 /*
633 * Inform users if tape state if frozen....
634 */
635 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
636 xpt_print_path(periph->path);
637 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM "
638 "command to clear this state.\n");
639 }
640
641 /* release the device if it is no longer mounted */
642 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0)
643 sareservereleaseunit(periph, FALSE);
644
645 cam_periph_unlock(periph);
646 cam_periph_release(periph);
647
648 return (error);
649}
650
651/*
652 * Actually translate the requested transfer into one the physical driver
653 * can understand. The transfer is described by a buf and will include
654 * only one physical transfer.
655 */
fef8985e
MD
656static int
657sastrategy(struct dev_strategy_args *ap)
984263bc 658{
fef8985e
MD
659 dev_t dev = ap->a_head.a_dev;
660 struct bio *bio = ap->a_bio;
81b5c339 661 struct buf *bp = bio->bio_buf;
984263bc
MD
662 struct cam_periph *periph;
663 struct sa_softc *softc;
664 u_int unit;
984263bc 665
81b5c339 666 if (SA_IS_CTRL(dev)) {
984263bc
MD
667 bp->b_error = EINVAL;
668 goto bad;
669 }
81b5c339 670 unit = SAUNIT(dev);
984263bc
MD
671 periph = cam_extend_get(saperiphs, unit);
672 if (periph == NULL) {
673 bp->b_error = ENXIO;
674 goto bad;
675 }
676 softc = (struct sa_softc *)periph->softc;
677
4e01b467 678 crit_enter();
984263bc
MD
679
680 if (softc->flags & SA_FLAG_INVALID) {
4e01b467 681 crit_exit();
984263bc
MD
682 bp->b_error = ENXIO;
683 goto bad;
684 }
685
686 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
4e01b467 687 crit_exit();
984263bc
MD
688 bp->b_error = EPERM;
689 goto bad;
690 }
691
4e01b467 692 crit_exit();
984263bc
MD
693
694 /*
695 * If it's a null transfer, return immediatly
696 */
697 if (bp->b_bcount == 0)
698 goto done;
699
700 /* valid request? */
701 if (softc->flags & SA_FLAG_FIXED) {
702 /*
703 * Fixed block device. The byte count must
704 * be a multiple of our block size.
705 */
706 if (((softc->blk_mask != ~0) &&
707 ((bp->b_bcount & softc->blk_mask) != 0)) ||
708 ((softc->blk_mask == ~0) &&
709 ((bp->b_bcount % softc->min_blk) != 0))) {
710 xpt_print_path(periph->path);
711 printf("Invalid request. Fixed block device "
712 "requests must be a multiple "
713 "of %d bytes\n", softc->media_blksize);
714 bp->b_error = EINVAL;
715 goto bad;
716 }
717 } else if ((bp->b_bcount > softc->max_blk) ||
718 (bp->b_bcount < softc->min_blk) ||
719 (bp->b_bcount & softc->blk_mask) != 0) {
720
721 xpt_print_path(periph->path);
722 printf("Invalid request. Variable block device "
723 "requests must be ");
724 if (softc->blk_mask != 0) {
725 printf("a multiple of %d ", (0x1 << softc->blk_gran));
726 }
727 printf("between %d and %d bytes\n", softc->min_blk,
728 softc->max_blk);
729 bp->b_error = EINVAL;
730 goto bad;
731 }
732
733 /*
734 * Mask interrupts so that the device cannot be invalidated until
735 * after we are in the queue. Otherwise, we might not properly
736 * clean up one of the buffers.
737 */
4e01b467 738 crit_enter();
984263bc
MD
739
740 /*
741 * Place it at the end of the queue.
742 */
81b5c339 743 bioq_insert_tail(&softc->bio_queue, bio);
984263bc
MD
744
745 softc->queue_count++;
746 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d "
747 "%s byte %s queue count now %d\n", (int) bp->b_bcount,
748 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
10f3fee5 749 (bp->b_cmd == BUF_CMD_READ)? "read" : "write", softc->queue_count));
984263bc 750
4e01b467 751 crit_exit();
984263bc
MD
752
753 /*
754 * Schedule ourselves for performing the work.
755 */
756 xpt_schedule(periph, 1);
757
fef8985e 758 return(0);
984263bc
MD
759bad:
760 bp->b_flags |= B_ERROR;
761done:
762
763 /*
764 * Correctly set the buf to indicate a completed xfer
765 */
766 bp->b_resid = bp->b_bcount;
81b5c339 767 biodone(bio);
fef8985e 768 return(0);
984263bc
MD
769}
770
771static int
fef8985e 772saioctl(struct dev_ioctl_args *ap)
984263bc 773{
fef8985e
MD
774 dev_t dev = ap->a_head.a_dev;
775 caddr_t addr = ap->a_data;
984263bc
MD
776 struct cam_periph *periph;
777 struct sa_softc *softc;
778 scsi_space_code spaceop;
779 int didlockperiph = 0;
984263bc
MD
780 int unit;
781 int mode;
782 int density;
783 int error = 0;
784
785 unit = SAUNIT(dev);
786 mode = SAMODE(dev);
787 density = SADENSITY(dev);
788 error = 0; /* shut up gcc */
789 spaceop = 0; /* shut up gcc */
790
791 periph = cam_extend_get(saperiphs, unit);
792 if (periph == NULL)
793 return (ENXIO);
794
795 softc = (struct sa_softc *)periph->softc;
796
797 /*
798 * Check for control mode accesses. We allow MTIOCGET and
799 * MTIOCERRSTAT (but need to be the only one open in order
800 * to clear latched status), and MTSETBSIZE, MTSETDNSTY
801 * and MTCOMP (but need to be the only one accessing this
802 * device to run those).
803 */
804
805 if (SA_IS_CTRL(dev)) {
fef8985e 806 switch (ap->a_cmd) {
984263bc
MD
807 case MTIOCGETEOTMODEL:
808 case MTIOCGET:
809 break;
810 case MTIOCERRSTAT:
811 /*
812 * If the periph isn't already locked, lock it
813 * so our MTIOCERRSTAT can reset latched error stats.
814 *
815 * If the periph is already locked, skip it because
816 * we're just getting status and it'll be up to the
817 * other thread that has this device open to do
818 * an MTIOCERRSTAT that would clear latched status.
819 */
4e01b467 820 crit_enter();
984263bc 821 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
377d4740 822 error = cam_periph_lock(periph, PCATCH);
984263bc 823 if (error != 0) {
4e01b467 824 crit_exit();
984263bc
MD
825 return (error);
826 }
827 didlockperiph = 1;
828 }
4e01b467 829 crit_exit();
984263bc
MD
830 break;
831
832 case MTIOCSETEOTMODEL:
833 case MTSETBSIZ:
834 case MTSETDNSTY:
835 case MTCOMP:
836 /*
837 * We need to acquire the peripheral here rather
838 * than at open time because we are sharing writable
839 * access to data structures.
840 */
4e01b467 841 crit_enter();
377d4740 842 error = cam_periph_lock(periph, PCATCH);
984263bc 843 if (error != 0) {
4e01b467 844 crit_exit();
984263bc
MD
845 return (error);
846 }
847 didlockperiph = 1;
4e01b467 848 crit_exit();
984263bc
MD
849 break;
850
851 default:
852 return (EINVAL);
853 }
854 }
855
856 /*
857 * Find the device that the user is talking about
858 */
fef8985e 859 switch (ap->a_cmd) {
984263bc
MD
860 case MTIOCGET:
861 {
fef8985e 862 struct mtget *g = (struct mtget *)addr;
984263bc
MD
863
864 /*
865 * If this isn't the control mode device, actually go out
866 * and ask the drive again what it's set to.
867 */
868 if (!SA_IS_CTRL(dev)) {
869 u_int8_t write_protect;
870 int comp_enabled, comp_supported;
871 error = sagetparams(periph, SA_PARAM_ALL,
872 &softc->media_blksize, &softc->media_density,
873 &softc->media_numblks, &softc->buffer_mode,
874 &write_protect, &softc->speed, &comp_supported,
875 &comp_enabled, &softc->comp_algorithm, NULL);
876 if (error)
877 break;
878 if (write_protect)
879 softc->flags |= SA_FLAG_TAPE_WP;
880 else
881 softc->flags &= ~SA_FLAG_TAPE_WP;
882 softc->flags &= ~(SA_FLAG_COMP_SUPP|
883 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP);
884 if (comp_supported) {
885 if (softc->saved_comp_algorithm == 0)
886 softc->saved_comp_algorithm =
887 softc->comp_algorithm;
888 softc->flags |= SA_FLAG_COMP_SUPP;
889 if (comp_enabled)
890 softc->flags |= SA_FLAG_COMP_ENABLED;
891 } else
892 softc->flags |= SA_FLAG_COMP_UNSUPP;
893 }
894 bzero(g, sizeof(struct mtget));
895 g->mt_type = MT_ISAR;
896 if (softc->flags & SA_FLAG_COMP_UNSUPP) {
897 g->mt_comp = MT_COMP_UNSUPP;
898 g->mt_comp0 = MT_COMP_UNSUPP;
899 g->mt_comp1 = MT_COMP_UNSUPP;
900 g->mt_comp2 = MT_COMP_UNSUPP;
901 g->mt_comp3 = MT_COMP_UNSUPP;
902 } else {
903 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
904 g->mt_comp = MT_COMP_DISABLED;
905 } else {
906 g->mt_comp = softc->comp_algorithm;
907 }
908 g->mt_comp0 = softc->comp_algorithm;
909 g->mt_comp1 = softc->comp_algorithm;
910 g->mt_comp2 = softc->comp_algorithm;
911 g->mt_comp3 = softc->comp_algorithm;
912 }
913 g->mt_density = softc->media_density;
914 g->mt_density0 = softc->media_density;
915 g->mt_density1 = softc->media_density;
916 g->mt_density2 = softc->media_density;
917 g->mt_density3 = softc->media_density;
918 g->mt_blksiz = softc->media_blksize;
919 g->mt_blksiz0 = softc->media_blksize;
920 g->mt_blksiz1 = softc->media_blksize;
921 g->mt_blksiz2 = softc->media_blksize;
922 g->mt_blksiz3 = softc->media_blksize;
923 g->mt_fileno = softc->fileno;
924 g->mt_blkno = softc->blkno;
925 g->mt_dsreg = (short) softc->dsreg;
926 /*
927 * Yes, we know that this is likely to overflow
928 */
929 if (softc->last_resid_was_io) {
930 if ((g->mt_resid = (short) softc->last_io_resid) != 0) {
931 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
932 softc->last_io_resid = 0;
933 }
934 }
935 } else {
936 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) {
937 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
938 softc->last_ctl_resid = 0;
939 }
940 }
941 }
942 error = 0;
943 break;
944 }
945 case MTIOCERRSTAT:
946 {
947 struct scsi_tape_errors *sep =
fef8985e 948 &((union mterrstat *)addr)->scsi_errstat;
984263bc
MD
949
950 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
951 ("saioctl: MTIOCERRSTAT\n"));
952
953 bzero(sep, sizeof(*sep));
954 sep->io_resid = softc->last_io_resid;
955 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
956 sizeof (sep->io_sense));
957 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
958 sizeof (sep->io_cdb));
959 sep->ctl_resid = softc->last_ctl_resid;
960 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
961 sizeof (sep->ctl_sense));
962 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
963 sizeof (sep->ctl_cdb));
964
965 if (SA_IS_CTRL(dev) == 0 || didlockperiph)
966 bzero((caddr_t) &softc->errinfo,
967 sizeof (softc->errinfo));
968 error = 0;
969 break;
970 }
971 case MTIOCTOP:
972 {
973 struct mtop *mt;
974 int count;
975
fef8985e 976 mt = (struct mtop *)addr;
984263bc
MD
977
978 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
979 ("saioctl: op=0x%x count=0x%x\n",
980 mt->mt_op, mt->mt_count));
981
982 count = mt->mt_count;
983 switch (mt->mt_op) {
984 case MTWEOF: /* write an end-of-file marker */
985 /*
986 * We don't need to clear the SA_FLAG_TAPE_WRITTEN
987 * flag because by keeping track of filemarks
988 * we have last written we know ehether or not
989 * we need to write more when we close the device.
990 */
991 error = sawritefilemarks(periph, count, FALSE);
992 break;
993 case MTWSS: /* write a setmark */
994 error = sawritefilemarks(periph, count, TRUE);
995 break;
996 case MTBSR: /* backward space record */
997 case MTFSR: /* forward space record */
998 case MTBSF: /* backward space file */
999 case MTFSF: /* forward space file */
1000 case MTBSS: /* backward space setmark */
1001 case MTFSS: /* forward space setmark */
1002 case MTEOD: /* space to end of recorded medium */
1003 {
1004 int nmarks;
1005
1006 spaceop = SS_FILEMARKS;
1007 nmarks = softc->filemarks;
1008 error = sacheckeod(periph);
1009 if (error) {
1010 xpt_print_path(periph->path);
1011 printf("EOD check prior to spacing failed\n");
1012 softc->flags |= SA_FLAG_EIO_PENDING;
1013 break;
1014 }
1015 nmarks -= softc->filemarks;
1016 switch(mt->mt_op) {
1017 case MTBSR:
1018 count = -count;
1019 /* FALLTHROUGH */
1020 case MTFSR:
1021 spaceop = SS_BLOCKS;
1022 break;
1023 case MTBSF:
1024 count = -count;
1025 /* FALLTHROUGH */
1026 case MTFSF:
1027 break;
1028 case MTBSS:
1029 count = -count;
1030 /* FALLTHROUGH */
1031 case MTFSS:
1032 spaceop = SS_SETMARKS;
1033 break;
1034 case MTEOD:
1035 spaceop = SS_EOD;
1036 count = 0;
1037 nmarks = 0;
1038 break;
1039 default:
1040 error = EINVAL;
1041 break;
1042 }
1043 if (error)
1044 break;
1045
1046 nmarks = softc->filemarks;
1047 /*
1048 * XXX: Why are we checking again?
1049 */
1050 error = sacheckeod(periph);
1051 if (error)
1052 break;
1053 nmarks -= softc->filemarks;
1054 error = saspace(periph, count - nmarks, spaceop);
1055 /*
1056 * At this point, clear that we've written the tape
1057 * and that we've written any filemarks. We really
1058 * don't know what the applications wishes to do next-
1059 * the sacheckeod's will make sure we terminated the
1060 * tape correctly if we'd been writing, but the next
1061 * action the user application takes will set again
1062 * whether we need to write filemarks.
1063 */
1064 softc->flags &=
1065 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1066 softc->filemarks = 0;
1067 break;
1068 }
1069 case MTREW: /* rewind */
0e224b5d 1070 sacheckeod(periph);
984263bc
MD
1071 error = sarewind(periph);
1072 /* see above */
1073 softc->flags &=
1074 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1075 softc->flags &= ~SA_FLAG_ERR_PENDING;
1076 softc->filemarks = 0;
1077 break;
1078 case MTERASE: /* erase */
1079 error = saerase(periph, count);
1080 softc->flags &=
1081 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1082 softc->flags &= ~SA_FLAG_ERR_PENDING;
1083 break;
1084 case MTRETENS: /* re-tension tape */
1085 error = saretension(periph);
1086 softc->flags &=
1087 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1088 softc->flags &= ~SA_FLAG_ERR_PENDING;
1089 break;
1090 case MTOFFL: /* rewind and put the drive offline */
1091
0e224b5d 1092 sacheckeod(periph);
984263bc
MD
1093 /* see above */
1094 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
1095 softc->filemarks = 0;
1096
1097 error = sarewind(periph);
1098 /* clear the frozen flag anyway */
1099 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1100
1101 /*
1102 * Be sure to allow media removal before ejecting.
1103 */
1104
1105 saprevent(periph, PR_ALLOW);
1106 if (error == 0) {
1107 error = saloadunload(periph, FALSE);
1108 if (error == 0) {
1109 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1110 }
1111 }
1112 break;
1113
1114 case MTNOP: /* no operation, sets status only */
1115 case MTCACHE: /* enable controller cache */
1116 case MTNOCACHE: /* disable controller cache */
1117 error = 0;
1118 break;
1119
1120 case MTSETBSIZ: /* Set block size for device */
1121
1122 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count,
1123 0, 0, 0);
1124 if (error == 0) {
1125 softc->last_media_blksize =
1126 softc->media_blksize;
1127 softc->media_blksize = count;
1128 if (count) {
1129 softc->flags |= SA_FLAG_FIXED;
1130 if (powerof2(count)) {
1131 softc->blk_shift =
1132 ffs(count) - 1;
1133 softc->blk_mask = count - 1;
1134 } else {
1135 softc->blk_mask = ~0;
1136 softc->blk_shift = 0;
1137 }
1138 /*
1139 * Make the user's desire 'persistent'.
1140 */
1141 softc->quirks &= ~SA_QUIRK_VARIABLE;
1142 softc->quirks |= SA_QUIRK_FIXED;
1143 } else {
1144 softc->flags &= ~SA_FLAG_FIXED;
1145 if (softc->max_blk == 0) {
1146 softc->max_blk = ~0;
1147 }
1148 softc->blk_shift = 0;
1149 if (softc->blk_gran != 0) {
1150 softc->blk_mask =
1151 softc->blk_gran - 1;
1152 } else {
1153 softc->blk_mask = 0;
1154 }
1155 /*
1156 * Make the user's desire 'persistent'.
1157 */
1158 softc->quirks |= SA_QUIRK_VARIABLE;
1159 softc->quirks &= ~SA_QUIRK_FIXED;
1160 }
1161 }
1162 break;
1163 case MTSETDNSTY: /* Set density for device and mode */
1164 if (count > UCHAR_MAX) {
1165 error = EINVAL;
1166 break;
1167 } else {
1168 error = sasetparams(periph, SA_PARAM_DENSITY,
1169 0, count, 0, 0);
1170 }
1171 break;
1172 case MTCOMP: /* enable compression */
1173 /*
1174 * Some devices don't support compression, and
1175 * don't like it if you ask them for the
1176 * compression page.
1177 */
1178 if ((softc->quirks & SA_QUIRK_NOCOMP) ||
1179 (softc->flags & SA_FLAG_COMP_UNSUPP)) {
1180 error = ENODEV;
1181 break;
1182 }
1183 error = sasetparams(periph, SA_PARAM_COMPRESSION,
1184 0, 0, count, SF_NO_PRINT);
1185 break;
1186 default:
1187 error = EINVAL;
1188 }
1189 break;
1190 }
1191 case MTIOCIEOT:
1192 case MTIOCEEOT:
1193 error = 0;
1194 break;
1195 case MTIOCRDSPOS:
fef8985e 1196 error = sardpos(periph, 0, (u_int32_t *) addr);
984263bc
MD
1197 break;
1198 case MTIOCRDHPOS:
fef8985e 1199 error = sardpos(periph, 1, (u_int32_t *) addr);
984263bc
MD
1200 break;
1201 case MTIOCSLOCATE:
fef8985e 1202 error = sasetpos(periph, 0, (u_int32_t *) addr);
984263bc
MD
1203 break;
1204 case MTIOCHLOCATE:
fef8985e 1205 error = sasetpos(periph, 1, (u_int32_t *) addr);
984263bc
MD
1206 break;
1207 case MTIOCGETEOTMODEL:
1208 error = 0;
1209 if (softc->quirks & SA_QUIRK_1FM)
1210 mode = 1;
1211 else
1212 mode = 2;
fef8985e 1213 *((u_int32_t *) addr) = mode;
984263bc
MD
1214 break;
1215 case MTIOCSETEOTMODEL:
1216 error = 0;
fef8985e 1217 switch (*((u_int32_t *) addr)) {
984263bc
MD
1218 case 1:
1219 softc->quirks &= ~SA_QUIRK_2FM;
1220 softc->quirks |= SA_QUIRK_1FM;
1221 break;
1222 case 2:
1223 softc->quirks &= ~SA_QUIRK_1FM;
1224 softc->quirks |= SA_QUIRK_2FM;
1225 break;
1226 default:
1227 error = EINVAL;
1228 break;
1229 }
1230 break;
1231 default:
fef8985e 1232 error = cam_periph_ioctl(periph, ap->a_cmd, addr, saerror);
984263bc
MD
1233 break;
1234 }
1235
1236 /*
1237 * Check to see if we cleared a frozen state
1238 */
1239 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) {
fef8985e 1240 switch(ap->a_cmd) {
984263bc
MD
1241 case MTIOCRDSPOS:
1242 case MTIOCRDHPOS:
1243 case MTIOCSLOCATE:
1244 case MTIOCHLOCATE:
1245 softc->fileno = (daddr_t) -1;
1246 softc->blkno = (daddr_t) -1;
1247 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1248 xpt_print_path(periph->path);
1249 printf("tape state now unfrozen.\n");
1250 break;
1251 default:
1252 break;
1253 }
1254 }
1255 if (didlockperiph) {
1256 cam_periph_unlock(periph);
1257 }
1258 return (error);
1259}
1260
1261static void
1262sainit(void)
1263{
1264 cam_status status;
1265 struct cam_path *path;
1266
1267 /*
1268 * Create our extend array for storing the devices we attach to.
1269 */
1270 saperiphs = cam_extend_new();
1271 if (saperiphs == NULL) {
1272 printf("sa: Failed to alloc extend array!\n");
1273 return;
1274 }
1275
1276 /*
1277 * Install a global async callback.
1278 */
1279 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1280 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1281
1282 if (status == CAM_REQ_CMP) {
1283 /* Register the async callbacks of interrest */
1284 struct ccb_setasync csa; /*
1285 * This is an immediate CCB,
1286 * so using the stack is OK
1287 */
1288 xpt_setup_ccb(&csa.ccb_h, path, 5);
1289 csa.ccb_h.func_code = XPT_SASYNC_CB;
1290 csa.event_enable = AC_FOUND_DEVICE;
1291 csa.callback = saasync;
1292 csa.callback_arg = NULL;
1293 xpt_action((union ccb *)&csa);
1294 status = csa.ccb_h.status;
1295 xpt_free_path(path);
1296 }
1297
1298 if (status != CAM_REQ_CMP) {
1299 printf("sa: Failed to attach master async callback "
1300 "due to status 0x%x!\n", status);
1301 }
1302}
1303
1304static void
1305saoninvalidate(struct cam_periph *periph)
1306{
1307 struct sa_softc *softc;
1308 struct buf *q_bp;
81b5c339 1309 struct bio *q_bio;
984263bc 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
MD
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 */
81b5c339
MD
1338 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1339 bioq_remove(&softc->bio_queue, q_bio);
1340 q_bp = q_bio->bio_buf;
984263bc
MD
1341 q_bp->b_resid = q_bp->b_bcount;
1342 q_bp->b_error = ENXIO;
1343 q_bp->b_flags |= B_ERROR;
81b5c339 1344 biodone(q_bio);
984263bc
MD
1345 }
1346 softc->queue_count = 0;
4e01b467 1347 crit_exit();
984263bc
MD
1348
1349 xpt_print_path(periph->path);
1350 printf("lost device\n");
1351
1352}
1353
1354static void
1355sacleanup(struct cam_periph *periph)
1356{
1357 struct sa_softc *softc;
984263bc
MD
1358
1359 softc = (struct sa_softc *)periph->softc;
1360
1361 devstat_remove_entry(&softc->device_stats);
1362
984263bc
MD
1363 cam_extend_release(saperiphs, periph->unit_number);
1364 xpt_print_path(periph->path);
1365 printf("removing device entry\n");
fef8985e 1366 dev_ops_remove(&sa_ops, SA_UNITMASK, SA_UNIT(periph->unit_number));
984263bc
MD
1367 free(softc, M_DEVBUF);
1368}
1369
1370static void
1371saasync(void *callback_arg, u_int32_t code,
1372 struct cam_path *path, void *arg)
1373{
1374 struct cam_periph *periph;
1375
1376 periph = (struct cam_periph *)callback_arg;
1377 switch (code) {
1378 case AC_FOUND_DEVICE:
1379 {
1380 struct ccb_getdev *cgd;
1381 cam_status status;
1382
1383 cgd = (struct ccb_getdev *)arg;
1384 if (cgd == NULL)
1385 break;
1386
1387 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
1388 break;
1389
1390 /*
1391 * Allocate a peripheral instance for
1392 * this device and start the probe
1393 * process.
1394 */
1395 status = cam_periph_alloc(saregister, saoninvalidate,
1396 sacleanup, sastart,
1397 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
1398 saasync, AC_FOUND_DEVICE, cgd);
1399
1400 if (status != CAM_REQ_CMP
1401 && status != CAM_REQ_INPROG)
1402 printf("saasync: Unable to probe new device "
1403 "due to status 0x%x\n", status);
1404 break;
1405 }
1406 default:
1407 cam_periph_async(periph, code, path, arg);
1408 break;
1409 }
1410}
1411
1412static cam_status
1413saregister(struct cam_periph *periph, void *arg)
1414{
1415 struct sa_softc *softc;
1416 struct ccb_setasync csa;
1417 struct ccb_getdev *cgd;
1418 caddr_t match;
1419 int i;
1420
1421 cgd = (struct ccb_getdev *)arg;
1422 if (periph == NULL) {
1423 printf("saregister: periph was NULL!!\n");
1424 return (CAM_REQ_CMP_ERR);
1425 }
1426
1427 if (cgd == NULL) {
1428 printf("saregister: no getdev CCB, can't register device\n");
1429 return (CAM_REQ_CMP_ERR);
1430 }
1431
ad86f6b6 1432 softc = malloc(sizeof (*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
984263bc
MD
1433 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
1434 softc->state = SA_STATE_NORMAL;
1435 softc->fileno = (daddr_t) -1;
1436 softc->blkno = (daddr_t) -1;
1437
81b5c339 1438 bioq_init(&softc->bio_queue);
984263bc
MD
1439 periph->softc = softc;
1440 cam_extend_set(saperiphs, periph->unit_number, periph);
1441
1442 /*
1443 * See if this device has any quirks.
1444 */
1445 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1446 (caddr_t)sa_quirk_table,
1447 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
1448 sizeof(*sa_quirk_table), scsi_inquiry_match);
1449
1450 if (match != NULL) {
1451 softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
1452 softc->last_media_blksize =
1453 ((struct sa_quirk_entry *)match)->prefblk;
1454#ifdef CAMDEBUG
1455 xpt_print_path(periph->path);
1456 printf("found quirk entry %d\n", (int)
1457 (((struct sa_quirk_entry *) match) - sa_quirk_table));
1458#endif
1459 } else
1460 softc->quirks = SA_QUIRK_NONE;
1461
1462 /*
1463 * The SA driver supports a blocksize, but we don't know the
1464 * blocksize until we media is inserted. So, set a flag to
1465 * indicate that the blocksize is unavailable right now.
1466 */
1467 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0,
1468 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
1469 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE);
1470
fef8985e
MD
1471 dev_ops_add(&sa_ops, SA_UNITMASK, SA_UNIT(periph->unit_number));
1472 make_dev(&sa_ops, SAMINOR(SA_CTLDEV,
984263bc
MD
1473 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1474 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number);
1475
fef8985e 1476 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV,
984263bc
MD
1477 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1478 0660, "r%s%d", periph->periph_name, periph->unit_number);
1479
fef8985e 1480 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV,
984263bc
MD
1481 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR,
1482 0660, "nr%s%d", periph->periph_name, periph->unit_number);
1483
fef8985e 1484 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV,
984263bc
MD
1485 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR,
1486 0660, "er%s%d", periph->periph_name, periph->unit_number);
1487
1488 for (i = 0; i < SA_NUM_MODES; i++) {
1489
fef8985e 1490 make_dev(&sa_ops,
984263bc
MD
1491 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R),
1492 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d",
1493 periph->periph_name, periph->unit_number, i);
1494
fef8985e 1495 make_dev(&sa_ops,
984263bc
MD
1496 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR),
1497 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d",
1498 periph->periph_name, periph->unit_number, i);
1499
1500
fef8985e 1501 make_dev(&sa_ops,
984263bc
MD
1502 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER),
1503 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d",
1504 periph->periph_name, periph->unit_number, i);
1505 }
1506
1507 /*
1508 * Add an async callback so that we get
1509 * notified if this device goes away.
1510 */
1511 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5);
1512 csa.ccb_h.func_code = XPT_SASYNC_CB;
1513 csa.event_enable = AC_LOST_DEVICE;
1514 csa.callback = saasync;
1515 csa.callback_arg = periph;
1516 xpt_action((union ccb *)&csa);
1517
1518 xpt_announce_periph(periph, NULL);
1519
1520 return (CAM_REQ_CMP);
1521}
1522
1523static void
1524sastart(struct cam_periph *periph, union ccb *start_ccb)
1525{
1526 struct sa_softc *softc;
1527
1528 softc = (struct sa_softc *)periph->softc;
1529
1530 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart"));
1531
1532
1533 switch (softc->state) {
1534 case SA_STATE_NORMAL:
1535 {
1536 /* Pull a buffer from the queue and get going on it */
1537 struct buf *bp;
81b5c339 1538 struct bio *bio;
984263bc
MD
1539
1540 /*
1541 * See if there is a buf with work for us to do..
1542 */
4e01b467 1543 crit_enter();
81b5c339 1544 bio = bioq_first(&softc->bio_queue);
984263bc
MD
1545 if (periph->immediate_priority <= periph->pinfo.priority) {
1546 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1547 ("queuing for immediate ccb\n"));
1548 Set_CCB_Type(start_ccb, SA_CCB_WAITING);
1549 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1550 periph_links.sle);
1551 periph->immediate_priority = CAM_PRIORITY_NONE;
4e01b467 1552 crit_exit();
984263bc 1553 wakeup(&periph->ccb_list);
81b5c339 1554 } else if (bio == NULL) {
4e01b467 1555 crit_exit();
984263bc
MD
1556 xpt_release_ccb(start_ccb);
1557 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) {
81b5c339 1558 struct bio *done_bio;
984263bc
MD
1559again:
1560 softc->queue_count--;
81b5c339
MD
1561 bioq_remove(&softc->bio_queue, bio);
1562 bp = bio->bio_buf;
984263bc 1563 bp->b_resid = bp->b_bcount;
81b5c339 1564 done_bio = bio;
984263bc
MD
1565 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
1566 /*
1567 * We now just clear errors in this case
1568 * and let the residual be the notifier.
1569 */
1570 bp->b_error = 0;
1571 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
1572 /*
1573 * This can only happen if we're reading
1574 * in fixed length mode. In this case,
1575 * we dump the rest of the list the
1576 * same way.
1577 */
1578 bp->b_error = 0;
81b5c339
MD
1579 if (bioq_first(&softc->bio_queue) != NULL) {
1580 biodone(done_bio);
984263bc
MD
1581 goto again;
1582 }
1583 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
1584 bp->b_error = EIO;
1585 bp->b_flags |= B_ERROR;
1586 }
81b5c339 1587 bio = bioq_first(&softc->bio_queue);
984263bc
MD
1588 /*
1589 * Only if we have no other buffers queued up
1590 * do we clear the pending error flag.
1591 */
81b5c339 1592 if (bio == NULL)
984263bc
MD
1593 softc->flags &= ~SA_FLAG_ERR_PENDING;
1594 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
81b5c339 1595 ("sastart- ERR_PENDING now 0x%x, bio is %sNULL, "
984263bc
MD
1596 "%d more buffers queued up\n",
1597 (softc->flags & SA_FLAG_ERR_PENDING),
81b5c339 1598 (bio != NULL)? "not " : " ", softc->queue_count));
4e01b467 1599 crit_exit();
984263bc 1600 xpt_release_ccb(start_ccb);
81b5c339 1601 biodone(done_bio);
984263bc
MD
1602 } else {
1603 u_int32_t length;
1604
81b5c339
MD
1605 bioq_remove(&softc->bio_queue, bio);
1606 bp = bio->bio_buf;
984263bc
MD
1607 softc->queue_count--;
1608
1609 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1610 if (softc->blk_shift != 0) {
1611 length =
1612 bp->b_bcount >> softc->blk_shift;
1613 } else if (softc->media_blksize != 0) {
1614 length =
1615 bp->b_bcount / softc->media_blksize;
1616 } else {
1617 bp->b_error = EIO;
1618 xpt_print_path(periph->path);
1619 printf("zero blocksize for "
1620 "FIXED length writes?\n");
4e01b467 1621 crit_exit();
81b5c339 1622 biodone(bio);
984263bc
MD
1623 break;
1624 }
1625 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1626 ("Fixed Record Count is %d\n", length));
1627 } else {
1628 length = bp->b_bcount;
1629 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1630 ("Variable Record Count is %d\n", length));
1631 }
1632 devstat_start_transaction(&softc->device_stats);
1633 /*
1634 * Some people have theorized that we should
1635 * suppress illegal length indication if we are
1636 * running in variable block mode so that we don't
1637 * have to request sense every time our requested
1638 * block size is larger than the written block.
1639 * The residual information from the ccb allows
1640 * us to identify this situation anyway. The only
1641 * problem with this is that we will not get
1642 * information about blocks that are larger than
1643 * our read buffer unless we set the block size
1644 * in the mode page to something other than 0.
1645 *
1646 * I believe that this is a non-issue. If user apps
1647 * don't adjust their read size to match our record
1648 * size, that's just life. Anyway, the typical usage
1649 * would be to issue, e.g., 64KB reads and occasionally
1650 * have to do deal with 512 byte or 1KB intermediate
1651 * records.
1652 */
10f3fee5 1653 softc->dsreg = (bp->b_cmd == BUF_CMD_READ) ?
984263bc
MD
1654 MTIO_DSREG_RD : MTIO_DSREG_WR;
1655 scsi_sa_read_write(&start_ccb->csio, 0, sadone,
10f3fee5 1656 MSG_SIMPLE_Q_TAG, (bp->b_cmd == BUF_CMD_READ) != 0,
984263bc
MD
1657 FALSE, (softc->flags & SA_FLAG_FIXED) != 0,
1658 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE,
1659 IO_TIMEOUT);
1660 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
1661 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO);
81b5c339
MD
1662 start_ccb->ccb_h.ccb_bio = bio;
1663 bio = bioq_first(&softc->bio_queue);
4e01b467 1664 crit_exit();
984263bc
MD
1665 xpt_action(start_ccb);
1666 }
1667
81b5c339 1668 if (bio != NULL) {
984263bc
MD
1669 /* Have more work to do, so ensure we stay scheduled */
1670 xpt_schedule(periph, 1);
1671 }
1672 break;
1673 }
1674 case SA_STATE_ABNORMAL:
1675 default:
1676 panic("state 0x%x in sastart", softc->state);
1677 break;
1678 }
1679}
1680
1681
1682static void
1683sadone(struct cam_periph *periph, union ccb *done_ccb)
1684{
1685 struct sa_softc *softc;
1686 struct ccb_scsiio *csio;
1687
1688 softc = (struct sa_softc *)periph->softc;
1689 csio = &done_ccb->csio;
1690 switch (CCB_Type(csio)) {
1691 case SA_CCB_BUFFER_IO:
1692 {
1693 struct buf *bp;
81b5c339 1694 struct bio *bio;
984263bc
MD
1695 int error;
1696
1697 softc->dsreg = MTIO_DSREG_REST;
81b5c339
MD
1698 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1699 bp = bio->bio_buf;
984263bc
MD
1700 error = 0;
1701 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1702 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
1703 /*
1704 * A retry was scheduled, so just return.
1705 */
1706 return;
1707 }
1708 }
1709
1710 if (error == EIO) {
984263bc 1711 struct buf *q_bp;
81b5c339 1712 struct bio *q_bio;
984263bc
MD
1713
1714 /*
1715 * Catastrophic error. Mark the tape as frozen
1716 * (we no longer know tape position).
1717 *
1718 * Return all queued I/O with EIO, and unfreeze
1719 * our queue so that future transactions that
1720 * attempt to fix this problem can get to the
1721 * device.
1722 *
1723 */
1724
4e01b467 1725 crit_enter();
984263bc 1726 softc->flags |= SA_FLAG_TAPE_FROZEN;
81b5c339
MD
1727 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL) {
1728 bioq_remove(&softc->bio_queue, q_bio);
1729 q_bp = q_bio->bio_buf;
984263bc
MD
1730 q_bp->b_resid = q_bp->b_bcount;
1731 q_bp->b_error = EIO;
1732 q_bp->b_flags |= B_ERROR;
81b5c339 1733 biodone(q_bio);
984263bc 1734 }
4e01b467 1735 crit_exit();
984263bc
MD
1736 }
1737 if (error != 0) {
1738 bp->b_resid = bp->b_bcount;
1739 bp->b_error = error;
1740 bp->b_flags |= B_ERROR;
1741 /*
1742 * In the error case, position is updated in saerror.
1743 */
1744 } else {
1745 bp->b_resid = csio->resid;
1746 bp->b_error = 0;
1747 if (csio->resid != 0) {
1748 bp->b_flags |= B_ERROR;
1749 }
10f3fee5 1750 if (bp->b_cmd != BUF_CMD_READ) {
984263bc
MD
1751 softc->flags |= SA_FLAG_TAPE_WRITTEN;
1752 softc->filemarks = 0;
1753 }
1754 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
1755 (softc->blkno != (daddr_t) -1)) {
1756 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1757 u_int32_t l;
1758 if (softc->blk_shift != 0) {
1759 l = bp->b_bcount >>
1760 softc->blk_shift;
1761 } else {
1762 l = bp->b_bcount /
1763 softc->media_blksize;
1764 }
1765 softc->blkno += (daddr_t) l;
1766 } else {
1767 softc->blkno++;
1768 }
1769 }
1770 }
1771 /*
1772 * If we had an error (immediate or pending),
1773 * release the device queue now.
1774 */
1775 if (error || (softc->flags & SA_FLAG_ERR_PENDING))
1776 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1777#ifdef CAMDEBUG
1778 if (error || bp->b_resid) {
1779 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
c789717e 1780 ("error %d resid %d count %d\n", error,
984263bc
MD
1781 bp->b_resid, bp->b_bcount));
1782 }
1783#endif
1784 devstat_end_transaction_buf(&softc->device_stats, bp);
81b5c339 1785 biodone(bio);
984263bc
MD
1786 break;
1787 }
1788 case SA_CCB_WAITING:
1789 {
1790 /* Caller will release the CCB */
1791 wakeup(&done_ccb->ccb_h.cbfcnp);
1792 return;
1793 }
1794 }
1795 xpt_release_ccb(done_ccb);
1796}
1797
1798/*
1799 * Mount the tape (make sure it's ready for I/O).
1800 */
1801static int
1802samount(struct cam_periph *periph, int oflags, dev_t dev)
1803{
1804 struct sa_softc *softc;
1805 union ccb *ccb;
1806 int error;
1807
1808 /*
1809 * oflags can be checked for 'kind' of open (read-only check) - later
1810 * dev can be checked for a control-mode or compression open - later
1811 */
1812 UNUSED_PARAMETER(oflags);
1813 UNUSED_PARAMETER(dev);
1814
1815
1816 softc = (struct sa_softc *)periph->softc;
1817
1818 /*
1819 * This should determine if something has happend since the last
1820 * open/mount that would invalidate the mount. We do *not* want
1821 * to retry this command- we just want the status. But we only
1822 * do this if we're mounted already- if we're not mounted,
1823 * we don't care about the unit read state and can instead use
1824 * this opportunity to attempt to reserve the tape unit.
1825 */
1826
1827 if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
1828 ccb = cam_periph_getccb(periph, 1);
1829 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1830 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1831 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1832 &softc->device_stats);
1833 QFRLS(ccb);
1834 if (error == ENXIO) {
1835 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1836 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1837 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1838 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1839 &softc->device_stats);
1840 QFRLS(ccb);
1841 } else if (error) {
1842 /*
1843 * We don't need to freeze the tape because we
1844 * will now attempt to rewind/load it.
1845 */
1846 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1847 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) {
1848 xpt_print_path(ccb->ccb_h.path);
1849 printf("error %d on TUR in samount\n", error);
1850 }
1851 }
1852 } else {
1853 error = sareservereleaseunit(periph, TRUE);
1854 if (error) {
1855 return (error);
1856 }
1857 ccb = cam_periph_getccb(periph, 1);
1858 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1859 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1860 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1861 &softc->device_stats);
1862 QFRLS(ccb);
1863 }
1864
1865 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
1866 struct scsi_read_block_limits_data *rblim = NULL;
1867 int comp_enabled, comp_supported;
1868 u_int8_t write_protect, guessing = 0;
1869
1870 /*
1871 * Clear out old state.
1872 */
1873 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
1874 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
1875 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP);
1876 softc->filemarks = 0;
1877
1878 /*
1879 * *Very* first off, make sure we're loaded to BOT.
1880 */
1881 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
1882 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
1883 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1884 &softc->device_stats);
1885 QFRLS(ccb);
1886
1887 /*
1888 * In case this doesn't work, do a REWIND instead
1889 */
1890 if (error) {
1891 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
1892 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1893 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1894 &softc->device_stats);
1895 QFRLS(ccb);
1896 }
1897 if (error) {
1898 xpt_release_ccb(ccb);
1899 goto exit;
1900 }
1901
1902 /*
1903 * Do a dummy test read to force access to the
1904 * media so that the drive will really know what's
1905 * there. We actually don't really care what the
1906 * blocksize on tape is and don't expect to really
1907 * read a full record.
1908 */
898d961b 1909 rblim = malloc(8192, M_TEMP, M_INTWAIT);
984263bc
MD
1910
1911 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
1912 scsi_sa_read_write(&ccb->csio, 0, sadone,
1913 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
1914 (void *) rblim, 8192, SSD_FULL_SIZE,
1915 IO_TIMEOUT);
0e224b5d 1916 cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
984263bc
MD
1917 &softc->device_stats);
1918 QFRLS(ccb);
1919 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
1920 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1921 error = cam_periph_runccb(ccb, saerror, 0,
1922 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA,
1923 &softc->device_stats);
1924 QFRLS(ccb);
1925 if (error) {
1926 xpt_print_path(ccb->ccb_h.path);
1927 printf("unable to rewind after test read\n");
1928 xpt_release_ccb(ccb);
1929 goto exit;
1930 }
1931 }
1932
1933 /*
1934 * Next off, determine block limits.
1935 */
1936 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
1937 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
1938
1939 error = cam_periph_runccb(ccb, saerror, 0,
1940 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO,
1941 &softc->device_stats);
1942 QFRLS(ccb);
1943 xpt_release_ccb(ccb);
1944
1945 if (error != 0) {
1946 /*
1947 * If it's less than SCSI-2, READ BLOCK LIMITS is not
1948 * a MANDATORY command. Anyway- it doesn't matter-
1949 * we can proceed anyway.
1950 */
1951 softc->blk_gran = 0;
1952 softc->max_blk = ~0;
1953 softc->min_blk = 0;
1954 } else {
1955 if (softc->scsi_rev >= SCSI_REV_3) {
1956 softc->blk_gran = RBL_GRAN(rblim);
1957 } else {
1958 softc->blk_gran = 0;
1959 }
1960 /*
1961 * We take max_blk == min_blk to mean a default to
1962 * fixed mode- but note that whatever we get out of
1963 * sagetparams below will actually determine whether
1964 * we are actually *in* fixed mode.
1965 */
1966 softc->max_blk = scsi_3btoul(rblim->maximum);
1967 softc->min_blk = scsi_2btoul(rblim->minimum);
1968
1969
1970 }
1971 /*
1972 * Next, perform a mode sense to determine
1973 * current density, blocksize, compression etc.
1974 */
1975 error = sagetparams(periph, SA_PARAM_ALL,
1976 &softc->media_blksize,
1977 &softc->media_density,
1978 &softc->media_numblks,
1979 &softc->buffer_mode, &write_protect,
1980 &softc->speed, &comp_supported,
1981 &comp_enabled, &softc->comp_algorithm,
1982 NULL);
1983
1984 if (error != 0) {
1985 /*
1986 * We could work a little harder here. We could
1987 * adjust our attempts to get information. It
1988 * might be an ancient tape drive. If someone
1989 * nudges us, we'll do that.
1990 */
1991 goto exit;
1992 }
1993
1994 /*
1995 * If no quirk has determined that this is a device that is
1996 * preferred to be in fixed or variable mode, now is the time
1997 * to find out.
1998 */
1999 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
2000 guessing = 1;
2001 /*
2002 * This could be expensive to find out. Luckily we
2003 * only need to do this once. If we start out in
2004 * 'default' mode, try and set ourselves to one
2005 * of the densities that would determine a wad
2006 * of other stuff. Go from highest to lowest.
2007 */
2008 if (softc->media_density == SCSI_DEFAULT_DENSITY) {
2009 int i;
2010 static u_int8_t ctry[] = {
2011 SCSI_DENSITY_HALFINCH_PE,
2012 SCSI_DENSITY_HALFINCH_6250C,
2013 SCSI_DENSITY_HALFINCH_6250,
2014 SCSI_DENSITY_HALFINCH_1600,
2015 SCSI_DENSITY_HALFINCH_800,
2016 SCSI_DENSITY_QIC_4GB,
2017 SCSI_DENSITY_QIC_2GB,
2018 SCSI_DENSITY_QIC_525_320,
2019 SCSI_DENSITY_QIC_150,
2020 SCSI_DENSITY_QIC_120,
2021 SCSI_DENSITY_QIC_24,
2022 SCSI_DENSITY_QIC_11_9TRK,
2023 SCSI_DENSITY_QIC_11_4TRK,
2024 SCSI_DENSITY_QIC_1320,
2025 SCSI_DENSITY_QIC_3080,
2026 0
2027 };
2028 for (i = 0; ctry[i]; i++) {
2029 error = sasetparams(periph,
2030 SA_PARAM_DENSITY, 0, ctry[i],
2031 0, SF_NO_PRINT);
2032 if (error == 0) {
2033 softc->media_density = ctry[i];
2034 break;
2035 }
2036 }
2037 }
2038 switch (softc->media_density) {
2039 case SCSI_DENSITY_QIC_11_4TRK:
2040 case SCSI_DENSITY_QIC_11_9TRK:
2041 case SCSI_DENSITY_QIC_24:
2042 case SCSI_DENSITY_QIC_120:
2043 case SCSI_DENSITY_QIC_150:
2044 case SCSI_DENSITY_QIC_525_320:
2045 case SCSI_DENSITY_QIC_1320:
2046 case SCSI_DENSITY_QIC_3080:
2047 softc->quirks &= ~SA_QUIRK_2FM;
2048 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2049 softc->last_media_blksize = 512;
2050 break;
2051 case SCSI_DENSITY_QIC_4GB:
2052 case SCSI_DENSITY_QIC_2GB:
2053 softc->quirks &= ~SA_QUIRK_2FM;
2054 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2055 softc->last_media_blksize = 1024;
2056 break;
2057 default:
2058 softc->last_media_blksize =
2059 softc->media_blksize;
2060 softc->quirks |= SA_QUIRK_VARIABLE;
2061 break;
2062 }
2063 }
2064
2065 /*
2066 * If no quirk has determined that this is a device that needs
2067 * to have 2 Filemarks at EOD, now is the time to find out.
2068 */
2069
2070 if ((softc->quirks & SA_QUIRK_2FM) == 0) {
2071 switch (softc->media_density) {
2072 case SCSI_DENSITY_HALFINCH_800:
2073 case SCSI_DENSITY_HALFINCH_1600:
2074 case SCSI_DENSITY_HALFINCH_6250:
2075 case SCSI_DENSITY_HALFINCH_6250C:
2076 case SCSI_DENSITY_HALFINCH_PE:
2077 softc->quirks &= ~SA_QUIRK_1FM;
2078 softc->quirks |= SA_QUIRK_2FM;
2079 break;
2080 default:
2081 break;
2082 }
2083 }
2084
2085 /*
2086 * Now validate that some info we got makes sense.
2087 */
2088 if ((softc->max_blk < softc->media_blksize) ||
2089 (softc->min_blk > softc->media_blksize &&
2090 softc->media_blksize)) {
2091 xpt_print_path(ccb->ccb_h.path);
2092 printf("BLOCK LIMITS (%d..%d) could not match current "
2093 "block settings (%d)- adjusting\n", softc->min_blk,
2094 softc->max_blk, softc->media_blksize);
2095 softc->max_blk = softc->min_blk =
2096 softc->media_blksize;
2097 }
2098
2099 /*
2100 * Now put ourselves into the right frame of mind based
2101 * upon quirks...
2102 */
2103tryagain:
2104 /*
2105 * If we want to be in FIXED mode and our current blocksize
2106 * is not equal to our last blocksize (if nonzero), try and
2107 * set ourselves to this last blocksize (as the 'preferred'
2108 * block size). The initial quirkmatch at registry sets the
2109 * initial 'last' blocksize. If, for whatever reason, this
2110 * 'last' blocksize is zero, set the blocksize to 512,
2111 * or min_blk if that's larger.
2112 */
2113 if ((softc->quirks & SA_QUIRK_FIXED) &&
2114 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
2115 (softc->media_blksize != softc->last_media_blksize)) {
2116 softc->media_blksize = softc->last_media_blksize;
2117 if (softc->media_blksize == 0) {
2118 softc->media_blksize = 512;
2119 if (softc->media_blksize < softc->min_blk) {
2120 softc->media_blksize = softc->min_blk;
2121 }
2122 }
2123 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2124 softc->media_blksize, 0, 0, SF_NO_PRINT);
2125 if (error) {
2126 xpt_print_path(ccb->ccb_h.path);
2127 printf("unable to set fixed blocksize to %d\n",
2128 softc->media_blksize);
2129 goto exit;
2130 }
2131 }
2132
2133 if ((softc->quirks & SA_QUIRK_VARIABLE) &&
2134 (softc->media_blksize != 0)) {
2135 softc->last_media_blksize = softc->media_blksize;
2136 softc->media_blksize = 0;
2137 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2138 0, 0, 0, SF_NO_PRINT);
2139 if (error) {
2140 /*
2141 * If this fails and we were guessing, just
2142 * assume that we got it wrong and go try
2143 * fixed block mode. Don't even check against
2144 * density code at this point.
2145 */
2146 if (guessing) {
2147 softc->quirks &= ~SA_QUIRK_VARIABLE;
2148 softc->quirks |= SA_QUIRK_FIXED;
2149 if (softc->last_media_blksize == 0)
2150 softc->last_media_blksize = 512;
2151 goto tryagain;
2152 }
2153 xpt_print_path(ccb->ccb_h.path);
2154 printf("unable to set variable blocksize\n");
2155 goto exit;
2156 }
2157 }
2158
2159 /*
2160 * Now that we have the current block size,
2161 * set up some parameters for sastart's usage.
2162 */
2163 if (softc->media_blksize) {
2164 softc->flags |= SA_FLAG_FIXED;
2165 if (powerof2(softc->media_blksize)) {
2166 softc->blk_shift =
2167 ffs(softc->media_blksize) - 1;
2168 softc->blk_mask = softc->media_blksize - 1;
2169 } else {
2170 softc->blk_mask = ~0;
2171 softc->blk_shift = 0;
2172 }
2173 } else {
2174 /*
2175 * The SCSI-3 spec allows 0 to mean "unspecified".
2176 * The SCSI-1 spec allows 0 to mean 'infinite'.
2177 *
2178 * Either works here.
2179 */
2180 if (softc->max_blk == 0) {
2181 softc->max_blk = ~0;
2182 }
2183 softc->blk_shift = 0;
2184 if (softc->blk_gran != 0) {
2185 softc->blk_mask = softc->blk_gran - 1;
2186 } else {
2187 softc->blk_mask = 0;
2188 }
2189 }
2190
2191 if (write_protect)
2192 softc->flags |= SA_FLAG_TAPE_WP;
2193
2194 if (comp_supported) {
2195 if (softc->saved_comp_algorithm == 0)
2196 softc->saved_comp_algorithm =
2197 softc->comp_algorithm;
2198 softc->flags |= SA_FLAG_COMP_SUPP;
2199 if (comp_enabled)
2200 softc->flags |= SA_FLAG_COMP_ENABLED;
2201 } else
2202 softc->flags |= SA_FLAG_COMP_UNSUPP;
2203
2204 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
2205 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
2206 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
2207 0, 0, SF_NO_PRINT);
2208 if (error == 0) {
2209 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
2210 } else {
2211 xpt_print_path(ccb->ccb_h.path);
2212 printf("unable to set buffered mode\n");
2213 }
2214 error = 0; /* not an error */
2215 }
2216
2217
2218 if (error == 0) {
2219 softc->flags |= SA_FLAG_TAPE_MOUNTED;
2220 }
2221exit:
2222 if (rblim != NULL)
2223 free(rblim, M_TEMP);
2224
2225 if (error != 0) {
2226 softc->dsreg = MTIO_DSREG_NIL;
2227 } else {
2228 softc->fileno = softc->blkno = 0;
2229 softc->dsreg = MTIO_DSREG_REST;
2230 }
2231#ifdef SA_1FM_AT_EOD
2232 if ((softc->quirks & SA_QUIRK_2FM) == 0)
2233 softc->quirks |= SA_QUIRK_1FM;
2234#else
2235 if ((softc->quirks & SA_QUIRK_1FM) == 0)
2236 softc->quirks |= SA_QUIRK_2FM;
2237#endif
2238 } else
2239 xpt_release_ccb(ccb);
2240
2241 /*
2242 * If we return an error, we're not mounted any more,
2243 * so release any device reservation.
2244 */
2245 if (error != 0) {
0e224b5d 2246 sareservereleaseunit(periph, FALSE);
984263bc
MD
2247 } else {
2248 /*
2249 * Clear I/O residual.
2250 */
2251 softc->last_io_resid = 0;
2252 softc->last_ctl_resid = 0;
2253 }
2254 return (error);
2255}
2256
2257/*
2258 * How many filemarks do we need to write if we were to terminate the
2259 * tape session right now? Note that this can be a negative number
2260 */
2261
2262static int
2263samarkswanted(struct cam_periph *periph)
2264{
2265 int markswanted;
2266 struct sa_softc *softc;
2267
2268 softc = (struct sa_softc *)periph->softc;
2269 markswanted = 0;
2270 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
2271 markswanted++;
2272 if (softc->quirks & SA_QUIRK_2FM)
2273 markswanted++;
2274 }
2275 markswanted -= softc->filemarks;
2276 return (markswanted);
2277}
2278
2279static int
2280sacheckeod(struct cam_periph *periph)
2281{
2282 int error;
2283 int markswanted;
2284 struct sa_softc *softc;
2285
2286 softc = (struct sa_softc *)periph->softc;
2287 markswanted = samarkswanted(periph);
2288
2289 if (markswanted > 0) {
2290 error = sawritefilemarks(periph, markswanted, FALSE);
2291 } else {
2292 error = 0;
2293 }
2294 return (error);
2295}
2296
2297static int
2298saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
2299{
2300 static const char *toobig =
2301 "%d-byte tape record bigger than supplied buffer\n";
2302 struct cam_periph *periph;
2303 struct sa_softc *softc;
2304 struct ccb_scsiio *csio;
2305 struct scsi_sense_data *sense;
2306 u_int32_t resid = 0;
2307 int32_t info = 0;
2308 cam_status status;
2309 int error_code, sense_key, asc, ascq, error, aqvalid;
2310
2311 periph = xpt_path_periph(ccb->ccb_h.path);
2312 softc = (struct sa_softc *)periph->softc;
2313 csio = &ccb->csio;
2314 sense = &csio->sense_data;
2315 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq);
2316 aqvalid = sense->extra_len >= 6;
2317 error = 0;
2318
2319 status = csio->ccb_h.status & CAM_STATUS_MASK;
2320
2321 /*
2322 * Calculate/latch up, any residuals... We do this in a funny 2-step
2323 * so we can print stuff here if we have CAM_DEBUG enabled for this
2324 * unit.
2325 */
2326 if (status == CAM_SCSI_STATUS_ERROR) {
2327 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
2328 info = (int32_t) scsi_4btoul(sense->info);
2329 resid = info;
2330 if ((softc->flags & SA_FLAG_FIXED) != 0)
2331 resid *= softc->media_blksize;
2332 } else {
2333 resid = csio->dxfer_len;
2334 info = resid;
2335 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2336 if (softc->media_blksize)
2337 info /= softc->media_blksize;
2338 }
2339 }
2340 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) {
2341 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
2342 sizeof (struct scsi_sense_data));
2343 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
2344 (int) csio->cdb_len);
2345 softc->last_io_resid = resid;
2346 softc->last_resid_was_io = 1;
2347 } else {
2348 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
2349 sizeof (struct scsi_sense_data));
2350 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
2351 (int) csio->cdb_len);
2352 softc->last_ctl_resid = resid;
2353 softc->last_resid_was_io = 0;
2354 }
2355 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
2356 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d "
2357 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
2358 sense_key, asc, ascq, status,
2359 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len));
2360 } else {
2361 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2362 ("Cam Status 0x%x\n", status));
2363 }
2364
2365 switch (status) {
2366 case CAM_REQ_CMP:
2367 return (0);
2368 case CAM_SCSI_STATUS_ERROR:
2369 /*
2370 * If a read/write command, we handle it here.
2371 */
2372 if (CCB_Type(csio) != SA_CCB_WAITING) {
2373 break;
2374 }
2375 /*
2376 * If this was just EOM/EOP, Filemark, Setmark or ILI detected
2377 * on a non read/write command, we assume it's not an error
2378 * and propagate the residule and return.
2379 */
2380 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) ||
2381 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
2382 csio->resid = resid;
2383 QFRLS(ccb);
2384 return (0);
2385 }
2386 /*
2387 * Otherwise, we let the common code handle this.
2388 */
2389 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2390
2391 /*
2392 * XXX: To Be Fixed
2393 * We cannot depend upon CAM honoring retry counts for these.
2394 */
2395 case CAM_SCSI_BUS_RESET:
2396 case CAM_BDR_SENT:
2397 if (ccb->ccb_h.retry_count <= 0) {
2398 return (EIO);
2399 break;
2400 }
2401 /* FALLTHROUGH */
2402 default:
2403 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2404 }
2405
2406 /*
2407 * Handle filemark, end of tape, mismatched record sizes....
2408 * From this point out, we're only handling read/write cases.
2409 * Handle writes && reads differently.
2410 */
2411
2412 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
2413 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
2414 csio->resid = resid;
2415 error = ENOSPC;
2416 } else if (sense->flags & SSD_EOM) {
2417 softc->flags |= SA_FLAG_EOM_PENDING;
2418 /*
2419 * Grotesque as it seems, the few times
2420 * I've actually seen a non-zero resid,
2421 * the tape drive actually lied and had
2422 * writtent all the data!.
2423 */
2424 csio->resid = 0;
2425 }
2426 } else {
2427 csio->resid = resid;
2428 if (sense_key == SSD_KEY_BLANK_CHECK) {
2429 if (softc->quirks & SA_QUIRK_1FM) {
2430 error = 0;
2431 softc->flags |= SA_FLAG_EOM_PENDING;
2432 } else {
2433 error = EIO;
2434 }
2435 } else if (sense->flags & SSD_FILEMARK) {
2436 if (softc->flags & SA_FLAG_FIXED) {
2437 error = -1;
2438 softc->flags |= SA_FLAG_EOF_PENDING;
2439 }
2440 /*
2441 * Unconditionally, if we detected a filemark on a read,
2442 * mark that we've run moved a file ahead.
2443 */
2444 if (softc->fileno != (daddr_t) -1) {
2445 softc->fileno++;
2446 softc->blkno = 0;
2447 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
2448 }
2449 }
2450 }
2451
2452 /*
2453 * Incorrect Length usually applies to read, but can apply to writes.
2454 */
2455 if (error == 0 && (sense->flags & SSD_ILI)) {
2456 if (info < 0) {
2457 xpt_print_path(csio->ccb_h.path);
2458 printf(toobig, csio->dxfer_len - info);
2459 csio->resid = csio->dxfer_len;
2460 error = EIO;
2461 } else {
2462 csio->resid = resid;
2463 if (softc->flags & SA_FLAG_FIXED) {
2464 softc->flags |= SA_FLAG_EIO_PENDING;
2465 }
2466 /*
2467 * Bump the block number if we hadn't seen a filemark.
2468 * Do this independent of errors (we've moved anyway).
2469 */
2470 if ((sense->flags & SSD_FILEMARK) == 0) {
2471 if (softc->blkno != (daddr_t) -1) {
2472 softc->blkno++;
2473 csio->ccb_h.ccb_pflags |=
2474 SA_POSITION_UPDATED;
2475 }
2476 }
2477 }
2478 }
2479
2480 if (error <= 0) {
2481 /*
2482 * Unfreeze the queue if frozen as we're not returning anything
2483 * to our waiters that would indicate an I/O error has occurred
2484 * (yet).
2485 */
2486 QFRLS(ccb);
2487 error = 0;
2488 }
2489 return (error);
2490}
2491
2492static int
2493sagetparams(struct cam_periph *periph, sa_params params_to_get,
2494 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
2495 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
2496 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
2497 sa_comp_t *tcs)
2498{
2499 union ccb *ccb;
2500 void *mode_buffer;
2501 struct scsi_mode_header_6 *mode_hdr;
2502 struct scsi_mode_blk_desc *mode_blk;
2503 int mode_buffer_len;
2504 struct sa_softc *softc;
2505 u_int8_t cpage;
2506 int error;
2507 cam_status status;
2508
2509 softc = (struct sa_softc *)periph->softc;
2510 ccb = cam_periph_getccb(periph, 1);
2511 if (softc->quirks & SA_QUIRK_NO_CPAGE)
2512 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2513 else
2514 cpage = SA_DATA_COMPRESSION_PAGE;
2515
2516retry:
2517 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2518
2519 if (params_to_get & SA_PARAM_COMPRESSION) {
2520 if (softc->quirks & SA_QUIRK_NOCOMP) {
2521 *comp_supported = FALSE;
2522 params_to_get &= ~SA_PARAM_COMPRESSION;
2523 } else
2524 mode_buffer_len += sizeof (sa_comp_t);
2525 }
2526
898d961b 2527 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO);
984263bc
MD
2528 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2529 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2530
2531 /* it is safe to retry this */
2532 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2533 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
2534 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
2535 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2536
2537 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2538 &softc->device_stats);
2539 QFRLS(ccb);
2540
2541 status = ccb->ccb_h.status & CAM_STATUS_MASK;
2542
2543 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
2544 /*
2545 * Hmm. Let's see if we can try another page...
2546 * If we've already done that, give up on compression
2547 * for this device and remember this for the future
2548 * and attempt the request without asking for compression
2549 * info.
2550 */
2551 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2552 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2553 goto retry;
2554 }
2555 softc->quirks |= SA_QUIRK_NOCOMP;
2556 free(mode_buffer, M_TEMP);
2557 goto retry;
2558 } else if (status == CAM_SCSI_STATUS_ERROR) {
2559 /* Tell the user about the fatal error. */
2560 scsi_sense_print(&ccb->csio);
2561 goto sagetparamsexit;
2562 }
2563
2564 /*
2565 * If the user only wants the compression information, and
2566 * the device doesn't send back the block descriptor, it's
2567 * no big deal. If the user wants more than just
2568 * compression, though, and the device doesn't pass back the
2569 * block descriptor, we need to send another mode sense to
2570 * get the block descriptor.
2571 */
2572 if ((mode_hdr->blk_desc_len == 0) &&
2573 (params_to_get & SA_PARAM_COMPRESSION) &&
2574 (params_to_get & ~(SA_PARAM_COMPRESSION))) {
2575
2576 /*
2577 * Decrease the mode buffer length by the size of
2578 * the compression page, to make sure the data
2579 * there doesn't get overwritten.
2580 */
2581 mode_buffer_len -= sizeof (sa_comp_t);
2582
2583 /*
2584 * Now move the compression page that we presumably
2585 * got back down the memory chunk a little bit so
2586 * it doesn't get spammed.
2587 */
2588 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
2589 bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
2590
2591 /*
2592 * Now, we issue another mode sense and just ask
2593 * for the block descriptor, etc.
2594 */
2595
2596 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2597 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
2598 mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
2599 SCSIOP_TIMEOUT);
2600
2601 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2602 &softc->device_stats);
2603 QFRLS(ccb);
2604
2605 if (error != 0)
2606 goto sagetparamsexit;
2607 }
2608
2609 if (params_to_get & SA_PARAM_BLOCKSIZE)
2610 *blocksize = scsi_3btoul(mode_blk->blklen);
2611
2612 if (params_to_get & SA_PARAM_NUMBLOCKS)
2613 *numblocks = scsi_3btoul(mode_blk->nblocks);
2614
2615 if (params_to_get & SA_PARAM_BUFF_MODE)
2616 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
2617
2618 if (params_to_get & SA_PARAM_DENSITY)
2619 *density = mode_blk->density;
2620
2621 if (params_to_get & SA_PARAM_WP)
2622 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
2623
2624 if (params_to_get & SA_PARAM_SPEED)
2625 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
2626
2627 if (params_to_get & SA_PARAM_COMPRESSION) {
2628 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
2629 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2630 struct scsi_data_compression_page *cp = &ntcs->dcomp;
2631 *comp_supported =
2632 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
2633 *comp_enabled =
2634 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
2635 *comp_algorithm = scsi_4btoul(cp->comp_algorithm);
2636 } else {
2637 struct scsi_dev_conf_page *cp = &ntcs->dconf;
2638 /*
2639 * We don't really know whether this device supports
2640 * Data Compression if the the algorithm field is
2641 * zero. Just say we do.
2642 */
2643 *comp_supported = TRUE;
2644 *comp_enabled =
2645 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
2646 *comp_algorithm = cp->sel_comp_alg;
2647 }
2648 if (tcs != NULL)
2649 bcopy(ntcs, tcs, sizeof (sa_comp_t));
2650 }
2651
2652 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2653 int idx;
2654 char *xyz = mode_buffer;
2655 xpt_print_path(periph->path);
2656 printf("Mode Sense Data=");
2657 for (idx = 0; idx < mode_buffer_len; idx++)
2658 printf(" 0x%02x", xyz[idx] & 0xff);
2659 printf("\n");
2660 }
2661
2662sagetparamsexit:
2663
2664 xpt_release_ccb(ccb);
2665 free(mode_buffer, M_TEMP);
2666 return (error);
2667}
2668
2669/*
2670 * The purpose of this function is to set one of four different parameters
2671 * for a tape drive:
2672 * - blocksize
2673 * - density
2674 * - compression / compression algorithm
2675 * - buffering mode
2676 *
2677 * The assumption is that this will be called from saioctl(), and therefore
2678 * from a process context. Thus the waiting malloc calls below. If that
2679 * assumption ever changes, the malloc calls should be changed to be
2680 * NOWAIT mallocs.
2681 *
2682 * Any or all of the four parameters may be set when this function is
2683 * called. It should handle setting more than one parameter at once.
2684 */
2685static int
2686sasetparams(struct cam_periph *periph, sa_params params_to_set,
2687 u_int32_t blocksize, u_int8_t density, u_int32_t calg,
2688 u_int32_t sense_flags)
2689{
2690 struct sa_softc *softc;
2691 u_int32_t current_blocksize;
2692 u_int32_t current_calg;
2693 u_int8_t current_density;
2694 u_int8_t current_speed;
2695 int comp_enabled, comp_supported;
2696 void *mode_buffer;
2697 int mode_buffer_len;
2698 struct scsi_mode_header_6 *mode_hdr;
2699 struct scsi_mode_blk_desc *mode_blk;
2700 sa_comp_t *ccomp, *cpage;
2701 int buff_mode;
2702 union ccb *ccb = NULL;
2703 int error;
2704
2705 softc = (struct sa_softc *)periph->softc;
2706
898d961b 2707 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_INTWAIT);
984263bc
MD
2708
2709 /*
2710 * Since it doesn't make sense to set the number of blocks, or
2711 * write protection, we won't try to get the current value. We
2712 * always want to get the blocksize, so we can set it back to the
2713 * proper value.
2714 */
2715 error = sagetparams(periph,
2716 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED,
2717 &current_blocksize, &current_density, NULL, &buff_mode, NULL,
2718 &current_speed, &comp_supported, &comp_enabled,
2719 &current_calg, ccomp);
2720
2721 if (error != 0) {
2722 free(ccomp, M_TEMP);
2723 return (error);
2724 }
2725
2726 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2727 if (params_to_set & SA_PARAM_COMPRESSION)
2728 mode_buffer_len += sizeof (sa_comp_t);
2729
898d961b 2730 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO);
984263bc
MD
2731
2732 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2733 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2734
2735 ccb = cam_periph_getccb(periph, 1);
2736
2737retry:
2738
2739 if (params_to_set & SA_PARAM_COMPRESSION) {
2740 if (mode_blk) {
2741 cpage = (sa_comp_t *)&mode_blk[1];
2742 } else {
2743 cpage = (sa_comp_t *)&mode_hdr[1];
2744 }
2745 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2746 cpage->hdr.pagecode &= ~0x80;
2747 } else
2748 cpage = NULL;
2749
2750 /*
2751 * If the caller wants us to set the blocksize, use the one they
2752 * pass in. Otherwise, use the blocksize we got back from the
2753 * mode select above.
2754 */
2755 if (mode_blk) {
2756 if (params_to_set & SA_PARAM_BLOCKSIZE)
2757 scsi_ulto3b(blocksize, mode_blk->blklen);
2758 else
2759 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2760
2761 /*
2762 * Set density if requested, else preserve old density.
2763 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2764 * devices, else density we've latched up in our softc.
2765 */
2766 if (params_to_set & SA_PARAM_DENSITY) {
2767 mode_blk->density = density;
2768 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2769 mode_blk->density = SCSI_SAME_DENSITY;
2770 } else {
2771 mode_blk->density = softc->media_density;
2772 }
2773 }
2774
2775 /*
2776 * For mode selects, these two fields must be zero.
2777 */
2778 mode_hdr->data_length = 0;
2779 mode_hdr->medium_type = 0;
2780
2781 /* set the speed to the current value */
2782 mode_hdr->dev_spec = current_speed;
2783
2784 /* set single-initiator buffering mode */
2785 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
2786
2787 if (mode_blk)
2788 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
2789 else
2790 mode_hdr->blk_desc_len = 0;
2791
2792 /*
2793 * First, if the user wants us to set the compression algorithm or
2794 * just turn compression on, check to make sure that this drive
2795 * supports compression.
2796 */
2797 if (params_to_set & SA_PARAM_COMPRESSION) {
2798 /*
2799 * If the compression algorithm is 0, disable compression.
2800 * If the compression algorithm is non-zero, enable
2801 * compression and set the compression type to the
2802 * specified compression algorithm, unless the algorithm is
2803 * MT_COMP_ENABLE. In that case, we look at the
2804 * compression algorithm that is currently set and if it is
2805 * non-zero, we leave it as-is. If it is zero, and we have
2806 * saved a compression algorithm from a time when
2807 * compression was enabled before, set the compression to
2808 * the saved value.
2809 */
2810 switch (ccomp->hdr.pagecode & ~0x80) {
2811 case SA_DATA_COMPRESSION_PAGE:
2812 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
2813 struct scsi_data_compression_page *dcp = &cpage->dcomp;
2814 if (calg == 0) {
2815 /*
2816 * Disable compression, but leave the
2817 * decompression and the capability bit
2818 * alone.
2819 */
2820 dcp->dce_and_dcc = SA_DCP_DCC;
2821 dcp->dde_and_red |= SA_DCP_DDE;
2822 break;
2823 }
2824 /* enable compression && decompression */
2825 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
2826 dcp->dde_and_red |= SA_DCP_DDE;
2827 /*
2828 * If there, use compression algorithm from caller.
2829 * Otherwise, if there's a saved compression algorithm
2830 * and there is no current algorithm, use the saved
2831 * algorithm. Else parrot back what we got and hope
2832 * for the best.
2833 */
2834 if (calg != MT_COMP_ENABLE) {
2835 scsi_ulto4b(calg, dcp->comp_algorithm);
2836 scsi_ulto4b(calg, dcp->decomp_algorithm);
2837 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
2838 softc->saved_comp_algorithm != 0) {
2839 scsi_ulto4b(softc->saved_comp_algorithm,
2840 dcp->comp_algorithm);
2841 scsi_ulto4b(softc->saved_comp_algorithm,
2842 dcp->decomp_algorithm);
2843 }
2844 break;
2845 }
2846 case SA_DEVICE_CONFIGURATION_PAGE:
2847 {
2848 struct scsi_dev_conf_page *dcp = &cpage->dconf;
2849 if (calg == 0) {
2850 dcp->sel_comp_alg = SA_COMP_NONE;
2851 break;
2852 }
2853 if (calg != MT_COMP_ENABLE) {
2854 dcp->sel_comp_alg = calg;
2855 } else if (dcp->sel_comp_alg == SA_COMP_NONE &&
2856 softc->saved_comp_algorithm != 0) {
2857 dcp->sel_comp_alg = softc->saved_comp_algorithm;
2858 }
2859 break;
2860 }
2861 default:
2862 /*
2863 * The drive doesn't seem to support compression,
2864 * so turn off the set compression bit.
2865 */
2866 params_to_set &= ~SA_PARAM_COMPRESSION;
2867 xpt_print_path(periph->path);
2868 printf("device does not seem to support compression\n");
2869
2870 /*
2871 * If that was the only thing the user wanted us to set,
2872 * clean up allocated resources and return with
2873 * 'operation not supported'.
2874 */
2875 if (params_to_set == SA_PARAM_NONE) {
2876 free(mode_buffer, M_TEMP);
2877 xpt_release_ccb(ccb);
2878 return (ENODEV);
2879 }
2880
2881 /*
2882 * That wasn't the only thing the user wanted us to set.
2883 * So, decrease the stated mode buffer length by the
2884 * size of the compression mode page.
2885 */
2886 mode_buffer_len -= sizeof(sa_comp_t);
2887 }
2888 }
2889
2890 /* It is safe to retry this operation */
2891 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
2892 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
2893 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2894
2895 error = cam_periph_runccb(ccb, saerror, 0,
2896 sense_flags, &softc->device_stats);
2897 QFRLS(ccb);
2898
2899 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2900 int idx;
2901 char *xyz = mode_buffer;
2902 xpt_print_path(periph->path);
2903 printf("Err%d, Mode Select Data=", error);
2904 for (idx = 0; idx < mode_buffer_len; idx++)
2905 printf(" 0x%02x", xyz[idx] & 0xff);
2906 printf("\n");
2907 }
2908
2909
2910 if (error) {
2911 /*
2912 * If we can, try without setting density/blocksize.
2913 */
2914 if (mode_blk) {
2915 if ((params_to_set &
2916 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
2917 mode_blk = NULL;
2918 goto retry;
2919 }
2920 } else {
2921 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2922 cpage = (sa_comp_t *)&mode_blk[1];
2923 }
2924
2925 /*
2926 * If we were setting the blocksize, and that failed, we
2927 * want to set it to its original value. If we weren't
2928 * setting the blocksize, we don't want to change it.
2929 */
2930 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2931
2932 /*
2933 * Set density if requested, else preserve old density.
2934 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2935 * devices, else density we've latched up in our softc.
2936 */
2937 if (params_to_set & SA_PARAM_DENSITY) {
2938 mode_blk->density = current_density;
2939 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2940 mode_blk->density = SCSI_SAME_DENSITY;
2941 } else {
2942 mode_blk->density = softc->media_density;
2943 }
2944
2945 if (params_to_set & SA_PARAM_COMPRESSION)
2946 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2947
2948 /*
2949 * The retry count is the only CCB field that might have been
2950 * changed that we care about, so reset it back to 1.
2951 */
2952 ccb->ccb_h.retry_count = 1;
2953 cam_periph_runccb(ccb, saerror, 0, sense_flags,
2954 &softc->device_stats);
2955 QFRLS(ccb);
2956 }
2957
2958 xpt_release_ccb(ccb);
2959
2960 if (ccomp != NULL)
2961 free(ccomp, M_TEMP);
2962
2963 if (params_to_set & SA_PARAM_COMPRESSION) {
2964 if (error) {
2965 softc->flags &= ~SA_FLAG_COMP_ENABLED;
2966 /*
2967 * Even if we get an error setting compression,
2968 * do not say that we don't support it. We could
2969 * have been wrong, or it may be media specific.
2970 * softc->flags &= ~SA_FLAG_COMP_SUPP;
2971 */
2972 softc->saved_comp_algorithm = softc->comp_algorithm;
2973 softc->comp_algorithm = 0;
2974 } else {
2975 softc->flags |= SA_FLAG_COMP_ENABLED;
2976 softc->comp_algorithm = calg;
2977 }
2978 }
2979
2980 free(mode_buffer, M_TEMP);
2981 return (error);
2982}
2983
2984static void
2985saprevent(struct cam_periph *periph, int action)
2986{
2987 struct sa_softc *softc;
2988 union ccb *ccb;
2989 int error, sf;
2990
2991 softc = (struct sa_softc *)periph->softc;
2992
2993 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
2994 return;
2995 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
2996 return;
2997
2998 /*
2999 * We can be quiet about illegal requests.
3000 */
3001 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
3002 sf = 0;
3003 } else
3004 sf = SF_QUIET_IR;
3005
3006 ccb = cam_periph_getccb(periph, 1);
3007
3008 /* It is safe to retry this operation */
3009 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
3010 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3011
3012 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats);
3013 QFRLS(ccb);
3014 if (error == 0) {
3015 if (action == PR_ALLOW)
3016 softc->flags &= ~SA_FLAG_TAPE_LOCKED;
3017 else
3018 softc->flags |= SA_FLAG_TAPE_LOCKED;
3019 }
3020
3021 xpt_release_ccb(ccb);
3022}
3023
3024static int
3025sarewind(struct cam_periph *periph)
3026{
3027 union ccb *ccb;
3028 struct sa_softc *softc;
3029 int error;
3030
3031 softc = (struct sa_softc *)periph->softc;
3032
3033 ccb = cam_periph_getccb(periph, 1);
3034
3035 /* It is safe to retry this operation */
3036 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3037 SSD_FULL_SIZE, REWIND_TIMEOUT);
3038
3039 softc->dsreg = MTIO_DSREG_REW;
3040 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3041 softc->dsreg = MTIO_DSREG_REST;
3042
3043 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3044 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3045
3046 xpt_release_ccb(ccb);
3047 if (error == 0)
3048 softc->fileno = softc->blkno = (daddr_t) 0;
3049 else
3050 softc->fileno = softc->blkno = (daddr_t) -1;
3051 return (error);
3052}
3053
3054static int
3055saspace(struct cam_periph *periph, int count, scsi_space_code code)
3056{
3057 union ccb *ccb;
3058 struct sa_softc *softc;
3059 int error;
3060
3061 softc = (struct sa_softc *)periph->softc;
3062
3063 ccb = cam_periph_getccb(periph, 1);
3064
3065 /* This cannot be retried */
3066
3067 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
3068 SSD_FULL_SIZE, SPACE_TIMEOUT);
3069
3070 /*
3071 * Clear residual because we will be using it.
3072 */
3073 softc->last_ctl_resid = 0;
3074
3075 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
3076 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3077 softc->dsreg = MTIO_DSREG_REST;
3078
3079 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3080 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3081
3082 xpt_release_ccb(ccb);
3083
3084 /*
3085 * If a spacing operation has failed, we need to invalidate
3086 * this mount.
3087 *
3088 * If the spacing operation was setmarks or to end of recorded data,
3089 * we no longer know our relative position.
3090 *
3091 * If the spacing operations was spacing files in reverse, we
3092 * take account of the residual, but still check against less
3093 * than zero- if we've gone negative, we must have hit BOT.
3094 *
3095 * If the spacing operations was spacing records in reverse and
3096 * we have a residual, we've either hit BOT or hit a filemark.
3097 * In the former case, we know our new record number (0). In
3098 * the latter case, we have absolutely no idea what the real
3099 * record number is- we've stopped between the end of the last
3100 * record in the previous file and the filemark that stopped
3101 * our spacing backwards.
3102 */
3103 if (error) {
3104 softc->fileno = softc->blkno = (daddr_t) -1;
3105 } else if (code == SS_SETMARKS || code == SS_EOD) {
3106 softc->fileno = softc->blkno = (daddr_t) -1;
3107 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
3108 softc->fileno += (count - softc->last_ctl_resid);
3109 if (softc->fileno < 0) /* we must of hit BOT */
3110 softc->fileno = 0;
3111 softc->blkno = 0;
3112 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
3113 softc->blkno += (count - softc->last_ctl_resid);
3114 if (count < 0) {
3115 if (softc->last_ctl_resid || softc->blkno < 0) {
3116 if (softc->fileno == 0) {
3117 softc->blkno = 0;
3118 } else {
3119 softc->blkno = (daddr_t) -1;
3120 }
3121 }
3122 }
3123 }
3124 return (error);
3125}
3126
3127static int
3128sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
3129{
3130 union ccb *ccb;
3131 struct sa_softc *softc;
3132 int error, nwm = 0;
3133
3134 softc = (struct sa_softc *)periph->softc;
3135
3136 ccb = cam_periph_getccb(periph, 1);
3137 /*
3138 * Clear residual because we will be using it.
3139 */
3140 softc->last_ctl_resid = 0;
3141
3142 softc->dsreg = MTIO_DSREG_FMK;
3143 /* this *must* not be retried */
3144 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
3145 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
3146 softc->dsreg = MTIO_DSREG_REST;
3147
3148
3149 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3150
3151 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3152 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3153
3154 if (error == 0 && nmarks) {
3155 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3156 nwm = nmarks - softc->last_ctl_resid;
3157 softc->filemarks += nwm;
3158 }
3159
3160 xpt_release_ccb(ccb);
3161
3162 /*
3163 * Update relative positions (if we're doing that).
3164 */
3165 if (error) {
3166 softc->fileno = softc->blkno = (daddr_t) -1;
3167 } else if (softc->fileno != (daddr_t) -1) {
3168 softc->fileno += nwm;
3169 softc->blkno = 0;
3170 }
3171 return (error);
3172}
3173
3174static int
3175sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3176{
3177 struct scsi_tape_position_data loc;
3178 union ccb *ccb;
3179 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3180 int error;
3181
3182 /*
3183 * We try and flush any buffered writes here if we were writing
3184 * and we're trying to get hardware block position. It eats
3185 * up performance substantially, but I'm wary of drive firmware.
3186 *
3187 * I think that *logical* block position is probably okay-
3188 * but hardware block position might have to wait for data
3189 * to hit media to be valid. Caveat Emptor.
3190 */
3191
3192 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
3193 error = sawritefilemarks(periph, 0, 0);
3194 if (error && error != EACCES)
3195 return (error);
3196 }
3197
3198 ccb = cam_periph_getccb(periph, 1);
3199 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3200 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3201 softc->dsreg = MTIO_DSREG_RBSY;
3202 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3203 softc->dsreg = MTIO_DSREG_REST;
3204 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3205 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3206
3207 if (error == 0) {
3208 if (loc.flags & SA_RPOS_UNCERTAIN) {
3209 error = EINVAL; /* nothing is certain */
3210 } else {
3211 *blkptr = scsi_4btoul(loc.firstblk);
3212 }
3213 }
3214
3215 xpt_release_ccb(ccb);
3216 return (error);
3217}
3218
3219static int
3220sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3221{
3222 union ccb *ccb;
3223 struct sa_softc *softc;
3224 int error;
3225
3226 /*
3227 * We used to try and flush any buffered writes here.
3228 * Now we push this onto user applications to either
3229 * flush the pending writes themselves (via a zero count
3230 * WRITE FILEMARKS command) or they can trust their tape
3231 * drive to do this correctly for them.
3232 */
3233
3234 softc = (struct sa_softc *)periph->softc;
3235 ccb = cam_periph_getccb(periph, 1);
3236
3237
3238 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3239 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT);
3240
3241
3242 softc->dsreg = MTIO_DSREG_POS;
3243 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3244 softc->dsreg = MTIO_DSREG_REST;
3245 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3246 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3247 xpt_release_ccb(ccb);
3248 /*
3249 * Note relative file && block number position as now unknown.
3250 */
3251 softc->fileno = softc->blkno = (daddr_t) -1;
3252 return (error);
3253}
3254
3255static int
3256saretension(struct cam_periph *periph)
3257{
3258 union ccb *ccb;
3259 struct sa_softc *softc;
3260 int error;
3261
3262 softc = (struct sa_softc *)periph->softc;
3263
3264 ccb = cam_periph_getccb(periph, 1);
3265
3266 /* It is safe to retry this operation */
3267 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3268 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
3269
3270 softc->dsreg = MTIO_DSREG_TEN;
3271 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3272 softc->dsreg = MTIO_DSREG_REST;
3273
3274 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3275 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3276 xpt_release_ccb(ccb);
3277 if (error == 0)
3278 softc->fileno = softc->blkno = (daddr_t) 0;
3279 else
3280 softc->fileno = softc->blkno = (daddr_t) -1;
3281 return (error);
3282}
3283
3284static int
3285sareservereleaseunit(struct cam_periph *periph, int reserve)
3286{
3287 union ccb *ccb;
3288 struct sa_softc *softc;
3289 int error;
3290
3291 softc = (struct sa_softc *)periph->softc;
3292 ccb = cam_periph_getccb(periph, 1);
3293
3294 /* It is safe to retry this operation */
3295 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
3296 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
3297 softc->dsreg = MTIO_DSREG_RBSY;
3298 error = cam_periph_runccb(ccb, saerror, 0,
3299 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats);
3300 softc->dsreg = MTIO_DSREG_REST;
3301 QFRLS(ccb);
3302 xpt_release_ccb(ccb);
3303
3304 /*
3305 * If the error was Illegal Request, then the device doesn't support
3306 * RESERVE/RELEASE. This is not an error.
3307 */
3308 if (error == EINVAL) {
3309 error = 0;
3310 }
3311
3312 return (error);
3313}
3314
3315static int
3316saloadunload(struct cam_periph *periph, int load)
3317{
3318 union ccb *ccb;
3319 struct sa_softc *softc;
3320 int error;
3321
3322 softc = (struct sa_softc *)periph->softc;
3323
3324 ccb = cam_periph_getccb(periph, 1);
3325
3326 /* It is safe to retry this operation */
3327 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3328 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
3329
3330 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
3331 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3332 softc->dsreg = MTIO_DSREG_REST;
3333 QFRLS(ccb);
3334 xpt_release_ccb(ccb);
3335
3336 if (error || load == 0)
3337 softc->fileno = softc->blkno = (daddr_t) -1;
3338 else if (error == 0)
3339 softc->fileno = softc->blkno = (daddr_t) 0;
3340 return (error);
3341}
3342
3343static int
3344saerase(struct cam_periph *periph, int longerase)
3345{
3346
3347 union ccb *ccb;
3348 struct sa_softc *softc;
3349 int error;
3350
3351 softc = (struct sa_softc *)periph->softc;
3352
3353 ccb = cam_periph_getccb(periph, 1);
3354
3355 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
3356 SSD_FULL_SIZE, ERASE_TIMEOUT);
3357
3358 softc->dsreg = MTIO_DSREG_ZER;
3359 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3360 softc->dsreg = MTIO_DSREG_REST;
3361
3362 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3363 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3364 xpt_release_ccb(ccb);
3365 return (error);
3366}
3367
3368#endif /* _KERNEL */
3369
3370/*
3371 * Read tape block limits command.
3372 */
3373void
3374scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
3375 void (*cbfcnp)(struct cam_periph *, union ccb *),
3376 u_int8_t tag_action,
3377 struct scsi_read_block_limits_data *rlimit_buf,
3378 u_int8_t sense_len, u_int32_t timeout)
3379{
3380 struct scsi_read_block_limits *scsi_cmd;
3381
3382 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3383 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
3384 sizeof(*scsi_cmd), timeout);
3385
3386 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
3387 bzero(scsi_cmd, sizeof(*scsi_cmd));
3388 scsi_cmd->opcode = READ_BLOCK_LIMITS;
3389}
3390
3391void
3392scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
3393 void (*cbfcnp)(struct cam_periph *, union ccb *),
3394 u_int8_t tag_action, int readop, int sli,
3395 int fixed, u_int32_t length, u_int8_t *data_ptr,
3396 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
3397{
3398 struct scsi_sa_rw *scsi_cmd;
3399
3400 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
3401 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE;
3402 scsi_cmd->sli_fixed = 0;
3403 if (sli && readop)
3404 scsi_cmd->sli_fixed |= SAR_SLI;
3405 if (fixed)
3406 scsi_cmd->sli_fixed |= SARW_FIXED;
3407 scsi_ulto3b(length, scsi_cmd->length);
3408 scsi_cmd->control = 0;
3409
3410 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT,
3411 tag_action, data_ptr, dxfer_len, sense_len,
3412 sizeof(*scsi_cmd), timeout);
3413}
3414
3415void
3416scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
3417 void (*cbfcnp)(struct cam_periph *, union ccb *),
3418 u_int8_t tag_action, int immediate, int eot,
3419 int reten, int load, u_int8_t sense_len,
3420 u_int32_t timeout)
3421{
3422 struct scsi_load_unload *scsi_cmd;
3423
3424 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
3425 bzero(scsi_cmd, sizeof(*scsi_cmd));
3426 scsi_cmd->opcode = LOAD_UNLOAD;
3427 if (immediate)
3428 scsi_cmd->immediate = SLU_IMMED;
3429 if (eot)
3430 scsi_cmd->eot_reten_load |= SLU_EOT;
3431 if (reten)
3432 scsi_cmd->eot_reten_load |= SLU_RETEN;
3433 if (load)
3434 scsi_cmd->eot_reten_load |= SLU_LOAD;
3435
3436 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3437 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
3438}
3439
3440void
3441scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
3442 void (*cbfcnp)(struct cam_periph *, union ccb *),
3443 u_int8_t tag_action, int immediate, u_int8_t sense_len,
3444 u_int32_t timeout)
3445{
3446 struct scsi_rewind *scsi_cmd;
3447
3448 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
3449 bzero(scsi_cmd, sizeof(*scsi_cmd));
3450 scsi_cmd->opcode = REWIND;
3451 if (immediate)
3452 scsi_cmd->immediate = SREW_IMMED;
3453
3454 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3455 0, sense_len, sizeof(*scsi_cmd), timeout);
3456}
3457
3458void
3459scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
3460 void (*cbfcnp)(struct cam_periph *, union ccb *),
3461 u_int8_t tag_action, scsi_space_code code,
3462 u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
3463{
3464 struct scsi_space *scsi_cmd;
3465
3466 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
3467 scsi_cmd->opcode = SPACE;
3468 scsi_cmd->code = code;
3469 scsi_ulto3b(count, scsi_cmd->count);
3470 scsi_cmd->control = 0;
3471
3472 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3473 0, sense_len, sizeof(*scsi_cmd), timeout);
3474}
3475
3476void
3477scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
3478 void (*cbfcnp)(struct cam_periph *, union ccb *),
3479 u_int8_t tag_action, int immediate, int setmark,
3480 u_int32_t num_marks, u_int8_t sense_len,
3481 u_int32_t timeout)
3482{
3483 struct scsi_write_filemarks *scsi_cmd;
3484
3485 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
3486 bzero(scsi_cmd, sizeof(*scsi_cmd));
3487 scsi_cmd->opcode = WRITE_FILEMARKS;
3488 if (immediate)
3489 scsi_cmd->byte2 |= SWFMRK_IMMED;
3490 if (setmark)
3491 scsi_cmd->byte2 |= SWFMRK_WSMK;
3492
3493 scsi_ulto3b(num_marks, scsi_cmd->num_marks);
3494
3495 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3496 0, sense_len, sizeof(*scsi_cmd), timeout);
3497}
3498
3499/*
3500 * The reserve and release unit commands differ only by their opcodes.
3501 */
3502void
3503scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
3504 void (*cbfcnp)(struct cam_periph *, union ccb *),
3505 u_int8_t tag_action, int third_party,
3506 int third_party_id, u_int8_t sense_len,
3507 u_int32_t timeout, int reserve)
3508{
3509 struct scsi_reserve_release_unit *scsi_cmd;
3510
3511 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
3512 bzero(scsi_cmd, sizeof(*scsi_cmd));
3513
3514 if (reserve)
3515 scsi_cmd->opcode = RESERVE_UNIT;
3516 else
3517 scsi_cmd->opcode = RELEASE_UNIT;
3518
3519 if (third_party) {
3520 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
3521 scsi_cmd->lun_thirdparty |=
3522 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
3523 }
3524
3525 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3526 0, sense_len, sizeof(*scsi_cmd), timeout);
3527}
3528
3529void
3530scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
3531 void (*cbfcnp)(struct cam_periph *, union ccb *),
3532 u_int8_t tag_action, int immediate, int long_erase,
3533 u_int8_t sense_len, u_int32_t timeout)
3534{
3535 struct scsi_erase *scsi_cmd;
3536
3537 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
3538 bzero(scsi_cmd, sizeof(*scsi_cmd));
3539
3540 scsi_cmd->opcode = ERASE;
3541
3542 if (immediate)
3543 scsi_cmd->lun_imm_long |= SE_IMMED;
3544
3545 if (long_erase)
3546 scsi_cmd->lun_imm_long |= SE_LONG;
3547
3548 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3549 0, sense_len, sizeof(*scsi_cmd), timeout);
3550}
3551
3552/*
3553 * Read Tape Position command.
3554 */
3555void
3556scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
3557 void (*cbfcnp)(struct cam_periph *, union ccb *),
3558 u_int8_t tag_action, int hardsoft,
3559 struct scsi_tape_position_data *sbp,
3560 u_int8_t sense_len, u_int32_t timeout)
3561{
3562 struct scsi_tape_read_position *scmd;
3563
3564 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3565 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
3566 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
3567 bzero(scmd, sizeof(*scmd));
3568 scmd->opcode = READ_POSITION;
3569 scmd->byte1 = hardsoft;
3570}
3571
3572/*
3573 * Set Tape Position command.
3574 */
3575void
3576scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries,
3577 void (*cbfcnp)(struct cam_periph *, union ccb *),
3578 u_int8_t tag_action, int hardsoft, u_int32_t blkno,
3579 u_int8_t sense_len, u_int32_t timeout)
3580{
3581 struct scsi_tape_locate *scmd;
3582
3583 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3584 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout);
3585 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
3586 bzero(scmd, sizeof(*scmd));
3587 scmd->opcode = LOCATE;
3588 if (hardsoft)
3589 scmd->byte1 |= SA_SPOS_BT;
3590 scsi_ulto4b(blkno, scmd->blkaddr);
3591}