2 * Implementation of SCSI Sequential Access Peripheral driver for CAM.
4 * Copyright (c) 1999, 2000 Matthew Jacob
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/queue.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
38 #include <sys/types.h>
41 #include <sys/limits.h>
42 #include <sys/malloc.h>
47 #include <sys/fcntl.h>
48 #include <sys/devicestat.h>
56 #include <cam/cam_ccb.h>
57 #include <cam/cam_periph.h>
58 #include <cam/cam_xpt_periph.h>
59 #include <cam/cam_debug.h>
61 #include <cam/scsi/scsi_all.h>
62 #include <cam/scsi/scsi_message.h>
63 #include <cam/scsi/scsi_sa.h>
70 #define SA_IO_TIMEOUT 4
72 #ifndef SA_SPACE_TIMEOUT
73 #define SA_SPACE_TIMEOUT 1 * 60
75 #ifndef SA_REWIND_TIMEOUT
76 #define SA_REWIND_TIMEOUT 2 * 60
78 #ifndef SA_ERASE_TIMEOUT
79 #define SA_ERASE_TIMEOUT 4 * 60
82 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */
84 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000)
85 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000)
86 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000)
87 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000)
90 * Additional options that can be set for config: SA_1FM_AT_EOT
93 #ifndef UNUSED_PARAMETER
94 #define UNUSED_PARAMETER(x) x = x
98 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \
99 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE)
105 MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers");
108 SA_STATE_NORMAL, SA_STATE_ABNORMAL
111 #define ccb_pflags ppriv_field0
112 #define ccb_bp ppriv_ptr1
114 #define SA_CCB_BUFFER_IO 0x0
115 #define SA_CCB_WAITING 0x1
116 #define SA_CCB_TYPEMASK 0x1
117 #define SA_POSITION_UPDATED 0x2
119 #define Set_CCB_Type(x, type) \
120 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \
121 x->ccb_h.ccb_pflags |= type
123 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK)
128 SA_FLAG_OPEN = 0x0001,
129 SA_FLAG_FIXED = 0x0002,
130 SA_FLAG_TAPE_LOCKED = 0x0004,
131 SA_FLAG_TAPE_MOUNTED = 0x0008,
132 SA_FLAG_TAPE_WP = 0x0010,
133 SA_FLAG_TAPE_WRITTEN = 0x0020,
134 SA_FLAG_EOM_PENDING = 0x0040,
135 SA_FLAG_EIO_PENDING = 0x0080,
136 SA_FLAG_EOF_PENDING = 0x0100,
137 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
138 SA_FLAG_EOF_PENDING),
139 SA_FLAG_INVALID = 0x0200,
140 SA_FLAG_COMP_ENABLED = 0x0400,
141 SA_FLAG_COMP_SUPP = 0x0800,
142 SA_FLAG_COMP_UNSUPP = 0x1000,
143 SA_FLAG_TAPE_FROZEN = 0x2000
147 SA_MODE_REWIND = 0x00,
148 SA_MODE_NOREWIND = 0x01,
149 SA_MODE_OFFLINE = 0x02
153 SA_PARAM_NONE = 0x00,
154 SA_PARAM_BLOCKSIZE = 0x01,
155 SA_PARAM_DENSITY = 0x02,
156 SA_PARAM_COMPRESSION = 0x04,
157 SA_PARAM_BUFF_MODE = 0x08,
158 SA_PARAM_NUMBLOCKS = 0x10,
160 SA_PARAM_SPEED = 0x40,
165 SA_QUIRK_NONE = 0x00,
166 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */
167 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */
168 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */
169 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */
170 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */
171 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */
172 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */
173 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */
176 /* units are bits 4-7, 16-21 (1024 units) */
177 #define SAUNIT(DEV) \
178 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16))
180 #define SAMODE(z) ((minor(z) & 0x3))
181 #define SADENSITY(z) (((minor(z) >> 2) & 0x3))
182 #define SA_IS_CTRL(z) (minor(z) & (1 << 29))
184 #define SA_NOT_CTLDEV 0
188 #define SA_ATYPE_NR 1
189 #define SA_ATYPE_ER 2
191 #define SAMINOR(ctl, unit, mode, access) \
192 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \
193 (mode << 0x2) | (access & 0x3))
195 #define SA_NUM_MODES 4
197 struct cdev *ctl_dev;
198 struct sa_mode_devs {
202 } mode_devs[SA_NUM_MODES];
209 struct bio_queue_head bio_queue;
211 struct devstat *device_stats;
218 u_int32_t comp_algorithm;
219 u_int32_t saved_comp_algorithm;
220 u_int32_t media_blksize;
221 u_int32_t last_media_blksize;
222 u_int32_t media_numblks;
223 u_int8_t media_density;
226 u_int8_t dsreg; /* mtio mt_dsreg, redux */
230 int last_resid_was_io;
233 * Relative to BOT Location.
242 struct scsi_sense_data _last_io_sense;
243 u_int32_t _last_io_resid;
244 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
245 struct scsi_sense_data _last_ctl_sense;
246 u_int32_t _last_ctl_resid;
247 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
248 #define last_io_sense errinfo._last_io_sense
249 #define last_io_resid errinfo._last_io_resid
250 #define last_io_cdb errinfo._last_io_cdb
251 #define last_ctl_sense errinfo._last_ctl_sense
252 #define last_ctl_resid errinfo._last_ctl_resid
253 #define last_ctl_cdb errinfo._last_ctl_cdb
256 * Misc other flags/state
260 open_rdonly : 1, /* open read-only */
261 open_pending_mount : 1, /* open pending mount */
262 ctrl_mode : 1; /* control device open */
265 struct sa_quirk_entry {
266 struct scsi_inquiry_pattern inq_pat; /* matching pattern */
267 sa_quirks quirks; /* specific quirk type */
268 u_int32_t prefblk; /* preferred blocksize when in fixed mode */
271 static struct sa_quirk_entry sa_quirk_table[] =
274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream",
275 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD |
276 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768
279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
280 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0
283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
284 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0
287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
288 "Python*", "*"}, SA_QUIRK_NODREAD, 0
291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
292 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
296 "VIPER 2525 25462", "-011"},
297 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0
300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
301 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
305 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
306 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0,
310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
311 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
315 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
319 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
323 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
327 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
331 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
333 { /* jreynold@primenet.com */
334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
335 "STT8000N*", "*"}, SA_QUIRK_1FM, 0
337 { /* mike@sentex.net */
338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
339 "STT20000*", "*"}, SA_QUIRK_1FM, 0
342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
343 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
347 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
351 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
355 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
359 " SLR*", "*"}, SA_QUIRK_1FM, 0
362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
363 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
367 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
371 static d_open_t saopen;
372 static d_close_t saclose;
373 static d_strategy_t sastrategy;
374 static d_ioctl_t saioctl;
375 static periph_init_t sainit;
376 static periph_ctor_t saregister;
377 static periph_oninv_t saoninvalidate;
378 static periph_dtor_t sacleanup;
379 static periph_start_t sastart;
380 static void saasync(void *callback_arg, u_int32_t code,
381 struct cam_path *path, void *arg);
382 static void sadone(struct cam_periph *periph,
383 union ccb *start_ccb);
384 static int saerror(union ccb *ccb, u_int32_t cam_flags,
385 u_int32_t sense_flags);
386 static int samarkswanted(struct cam_periph *);
387 static int sacheckeod(struct cam_periph *periph);
388 static int sagetparams(struct cam_periph *periph,
389 sa_params params_to_get,
390 u_int32_t *blocksize, u_int8_t *density,
391 u_int32_t *numblocks, int *buff_mode,
392 u_int8_t *write_protect, u_int8_t *speed,
393 int *comp_supported, int *comp_enabled,
394 u_int32_t *comp_algorithm,
395 sa_comp_t *comp_page);
396 static int sasetparams(struct cam_periph *periph,
397 sa_params params_to_set,
398 u_int32_t blocksize, u_int8_t density,
399 u_int32_t comp_algorithm,
400 u_int32_t sense_flags);
401 static void saprevent(struct cam_periph *periph, int action);
402 static int sarewind(struct cam_periph *periph);
403 static int saspace(struct cam_periph *periph, int count,
404 scsi_space_code code);
405 static int samount(struct cam_periph *, int, struct cdev *);
406 static int saretension(struct cam_periph *periph);
407 static int sareservereleaseunit(struct cam_periph *periph,
409 static int saloadunload(struct cam_periph *periph, int load);
410 static int saerase(struct cam_periph *periph, int longerase);
411 static int sawritefilemarks(struct cam_periph *periph,
412 int nmarks, int setmarks);
413 static int sardpos(struct cam_periph *periph, int, u_int32_t *);
414 static int sasetpos(struct cam_periph *periph, int, u_int32_t *);
417 static struct periph_driver sadriver =
420 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
423 PERIPHDRIVER_DECLARE(sa, sadriver);
425 /* For 2.2-stable support */
431 static struct cdevsw sa_cdevsw = {
432 .d_version = D_VERSION,
436 .d_write = physwrite,
438 .d_strategy = sastrategy,
440 .d_flags = D_TAPE | D_NEEDGIANT,
444 saopen(struct cdev *dev, int flags, int fmt, struct thread *td)
446 struct cam_periph *periph;
447 struct sa_softc *softc;
453 periph = (struct cam_periph *)dev->si_drv1;
454 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
458 cam_periph_lock(periph);
460 softc = (struct sa_softc *)periph->softc;
462 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
463 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
465 if (SA_IS_CTRL(dev)) {
466 softc->ctrl_mode = 1;
467 cam_periph_unlock(periph);
471 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
472 cam_periph_unlock(periph);
473 cam_periph_release(periph);
477 if (softc->flags & SA_FLAG_OPEN) {
479 } else if (softc->flags & SA_FLAG_INVALID) {
483 * Preserve whether this is a read_only open.
485 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY;
488 * The function samount ensures media is loaded and ready.
489 * It also does a device RESERVE if the tape isn't yet mounted.
491 * If the mount fails and this was a non-blocking open,
492 * make this a 'open_pending_mount' action.
494 error = samount(periph, flags, dev);
495 if (error && (flags & O_NONBLOCK)) {
496 softc->flags |= SA_FLAG_OPEN;
497 softc->open_pending_mount = 1;
498 cam_periph_unhold(periph);
499 cam_periph_unlock(periph);
505 cam_periph_unhold(periph);
506 cam_periph_unlock(periph);
507 cam_periph_release(periph);
511 saprevent(periph, PR_PREVENT);
512 softc->flags |= SA_FLAG_OPEN;
514 cam_periph_unhold(periph);
515 cam_periph_unlock(periph);
520 saclose(struct cdev *dev, int flag, int fmt, struct thread *td)
522 struct cam_periph *periph;
523 struct sa_softc *softc;
524 int unit, mode, error, writing, tmp;
525 int closedbits = SA_FLAG_OPEN;
529 periph = (struct cam_periph *)dev->si_drv1;
533 cam_periph_lock(periph);
535 softc = (struct sa_softc *)periph->softc;
537 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
538 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
541 softc->open_rdonly = 0;
542 if (SA_IS_CTRL(dev)) {
543 softc->ctrl_mode = 0;
544 cam_periph_unlock(periph);
545 cam_periph_release(periph);
549 if (softc->open_pending_mount) {
550 softc->flags &= ~SA_FLAG_OPEN;
551 softc->open_pending_mount = 0;
552 cam_periph_unlock(periph);
553 cam_periph_release(periph);
557 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) {
558 cam_periph_unlock(periph);
563 * Were we writing the tape?
565 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0;
568 * See whether or not we need to write filemarks. If this
569 * fails, we probably have to assume we've lost tape
572 error = sacheckeod(periph);
574 xpt_print(periph->path,
575 "failed to write terminating filemark(s)\n");
576 softc->flags |= SA_FLAG_TAPE_FROZEN;
580 * Whatever we end up doing, allow users to eject tapes from here on.
582 saprevent(periph, PR_ALLOW);
585 * Decide how to end...
587 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
588 closedbits |= SA_FLAG_TAPE_FROZEN;
589 } else switch (mode) {
590 case SA_MODE_OFFLINE:
592 * An 'offline' close is an unconditional release of
593 * frozen && mount conditions, irrespective of whether
594 * these operations succeeded. The reason for this is
595 * to allow at least some kind of programmatic way
596 * around our state getting all fouled up. If somebody
597 * issues an 'offline' command, that will be allowed
600 (void) sarewind(periph);
601 (void) saloadunload(periph, FALSE);
602 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN;
606 * If the rewind fails, return an error- if anyone cares,
607 * but not overwriting any previous error.
609 * We don't clear the notion of mounted here, but we do
610 * clear the notion of frozen if we successfully rewound.
612 tmp = sarewind(periph);
617 closedbits |= SA_FLAG_TAPE_FROZEN;
620 case SA_MODE_NOREWIND:
622 * If we're not rewinding/unloading the tape, find out
623 * whether we need to back up over one of two filemarks
624 * we wrote (if we wrote two filemarks) so that appends
625 * from this point on will be sane.
627 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) {
628 tmp = saspace(periph, -1, SS_FILEMARKS);
630 xpt_print(periph->path, "unable to backspace "
631 "over one of double filemarks at end of "
633 xpt_print(periph->path, "it is possible that "
634 "this device needs a SA_QUIRK_1FM quirk set"
636 softc->flags |= SA_FLAG_TAPE_FROZEN;
641 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode);
647 * We wish to note here that there are no more filemarks to be written.
649 softc->filemarks = 0;
650 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
653 * And we are no longer open for business.
655 softc->flags &= ~closedbits;
658 * Inform users if tape state if frozen....
660 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
661 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, "
662 "REWIND or MTEOM command to clear this state.\n");
665 /* release the device if it is no longer mounted */
666 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0)
667 sareservereleaseunit(periph, FALSE);
669 cam_periph_unhold(periph);
670 cam_periph_unlock(periph);
671 cam_periph_release(periph);
677 * Actually translate the requested transfer into one the physical driver
678 * can understand. The transfer is described by a buf and will include
679 * only one physical transfer.
682 sastrategy(struct bio *bp)
684 struct cam_periph *periph;
685 struct sa_softc *softc;
687 bp->bio_resid = bp->bio_bcount;
688 if (SA_IS_CTRL(bp->bio_dev)) {
689 biofinish(bp, NULL, EINVAL);
692 periph = (struct cam_periph *)bp->bio_dev->si_drv1;
693 if (periph == NULL) {
694 biofinish(bp, NULL, ENXIO);
697 cam_periph_lock(periph);
699 softc = (struct sa_softc *)periph->softc;
701 if (softc->flags & SA_FLAG_INVALID) {
702 cam_periph_unlock(periph);
703 biofinish(bp, NULL, ENXIO);
707 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
708 cam_periph_unlock(periph);
709 biofinish(bp, NULL, EPERM);
714 * This should actually never occur as the write(2)
715 * system call traps attempts to write to a read-only
718 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) {
719 cam_periph_unlock(periph);
720 biofinish(bp, NULL, EBADF);
724 if (softc->open_pending_mount) {
725 int error = samount(periph, 0, bp->bio_dev);
727 cam_periph_unlock(periph);
728 biofinish(bp, NULL, ENXIO);
731 saprevent(periph, PR_PREVENT);
732 softc->open_pending_mount = 0;
737 * If it's a null transfer, return immediately
739 if (bp->bio_bcount == 0) {
740 cam_periph_unlock(periph);
746 if (softc->flags & SA_FLAG_FIXED) {
748 * Fixed block device. The byte count must
749 * be a multiple of our block size.
751 if (((softc->blk_mask != ~0) &&
752 ((bp->bio_bcount & softc->blk_mask) != 0)) ||
753 ((softc->blk_mask == ~0) &&
754 ((bp->bio_bcount % softc->min_blk) != 0))) {
755 xpt_print(periph->path, "Invalid request. Fixed block "
756 "device requests must be a multiple of %d bytes\n",
758 cam_periph_unlock(periph);
759 biofinish(bp, NULL, EINVAL);
762 } else if ((bp->bio_bcount > softc->max_blk) ||
763 (bp->bio_bcount < softc->min_blk) ||
764 (bp->bio_bcount & softc->blk_mask) != 0) {
766 xpt_print_path(periph->path);
767 printf("Invalid request. Variable block "
768 "device requests must be ");
769 if (softc->blk_mask != 0) {
770 printf("a multiple of %d ", (0x1 << softc->blk_gran));
772 printf("between %d and %d bytes\n", softc->min_blk,
774 cam_periph_unlock(periph);
775 biofinish(bp, NULL, EINVAL);
780 * Place it at the end of the queue.
782 bioq_insert_tail(&softc->bio_queue, bp);
783 softc->queue_count++;
785 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
786 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount,
787 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
788 (bp->bio_cmd == BIO_READ)? "read" : "write"));
790 if (softc->queue_count > 1) {
791 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
792 ("sastrategy: queue count now %d\n", softc->queue_count));
796 * Schedule ourselves for performing the work.
798 xpt_schedule(periph, 1);
799 cam_periph_unlock(periph);
805 #define PENDING_MOUNT_CHECK(softc, periph, dev) \
806 if (softc->open_pending_mount) { \
807 error = samount(periph, 0, dev); \
811 saprevent(periph, PR_PREVENT); \
812 softc->open_pending_mount = 0; \
816 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
818 struct cam_periph *periph;
819 struct sa_softc *softc;
820 scsi_space_code spaceop;
821 int didlockperiph = 0;
826 error = 0; /* shut up gcc */
827 spaceop = 0; /* shut up gcc */
829 periph = (struct cam_periph *)dev->si_drv1;
833 cam_periph_lock(periph);
834 softc = (struct sa_softc *)periph->softc;
837 * Check for control mode accesses. We allow MTIOCGET and
838 * MTIOCERRSTAT (but need to be the only one open in order
839 * to clear latched status), and MTSETBSIZE, MTSETDNSTY
840 * and MTCOMP (but need to be the only one accessing this
841 * device to run those).
844 if (SA_IS_CTRL(dev)) {
846 case MTIOCGETEOTMODEL:
851 * If the periph isn't already locked, lock it
852 * so our MTIOCERRSTAT can reset latched error stats.
854 * If the periph is already locked, skip it because
855 * we're just getting status and it'll be up to the
856 * other thread that has this device open to do
857 * an MTIOCERRSTAT that would clear latched status.
859 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
860 error = cam_periph_hold(periph, PRIBIO|PCATCH);
869 struct mtop *mt = (struct mtop *) arg;
872 * Check to make sure it's an OP we can perform
873 * with no media inserted.
889 case MTIOCSETEOTMODEL:
891 * We need to acquire the peripheral here rather
892 * than at open time because we are sharing writable
893 * access to data structures.
895 error = cam_periph_hold(periph, PRIBIO|PCATCH);
907 * Find the device that the user is talking about
912 struct mtget *g = (struct mtget *)arg;
915 * If this isn't the control mode device, actually go out
916 * and ask the drive again what it's set to.
918 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) {
919 u_int8_t write_protect;
920 int comp_enabled, comp_supported;
921 error = sagetparams(periph, SA_PARAM_ALL,
922 &softc->media_blksize, &softc->media_density,
923 &softc->media_numblks, &softc->buffer_mode,
924 &write_protect, &softc->speed, &comp_supported,
925 &comp_enabled, &softc->comp_algorithm, NULL);
929 softc->flags |= SA_FLAG_TAPE_WP;
931 softc->flags &= ~SA_FLAG_TAPE_WP;
932 softc->flags &= ~(SA_FLAG_COMP_SUPP|
933 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP);
934 if (comp_supported) {
935 if (softc->saved_comp_algorithm == 0)
936 softc->saved_comp_algorithm =
937 softc->comp_algorithm;
938 softc->flags |= SA_FLAG_COMP_SUPP;
940 softc->flags |= SA_FLAG_COMP_ENABLED;
942 softc->flags |= SA_FLAG_COMP_UNSUPP;
944 bzero(g, sizeof(struct mtget));
945 g->mt_type = MT_ISAR;
946 if (softc->flags & SA_FLAG_COMP_UNSUPP) {
947 g->mt_comp = MT_COMP_UNSUPP;
948 g->mt_comp0 = MT_COMP_UNSUPP;
949 g->mt_comp1 = MT_COMP_UNSUPP;
950 g->mt_comp2 = MT_COMP_UNSUPP;
951 g->mt_comp3 = MT_COMP_UNSUPP;
953 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
954 g->mt_comp = MT_COMP_DISABLED;
956 g->mt_comp = softc->comp_algorithm;
958 g->mt_comp0 = softc->comp_algorithm;
959 g->mt_comp1 = softc->comp_algorithm;
960 g->mt_comp2 = softc->comp_algorithm;
961 g->mt_comp3 = softc->comp_algorithm;
963 g->mt_density = softc->media_density;
964 g->mt_density0 = softc->media_density;
965 g->mt_density1 = softc->media_density;
966 g->mt_density2 = softc->media_density;
967 g->mt_density3 = softc->media_density;
968 g->mt_blksiz = softc->media_blksize;
969 g->mt_blksiz0 = softc->media_blksize;
970 g->mt_blksiz1 = softc->media_blksize;
971 g->mt_blksiz2 = softc->media_blksize;
972 g->mt_blksiz3 = softc->media_blksize;
973 g->mt_fileno = softc->fileno;
974 g->mt_blkno = softc->blkno;
975 g->mt_dsreg = (short) softc->dsreg;
977 * Yes, we know that this is likely to overflow
979 if (softc->last_resid_was_io) {
980 if ((g->mt_resid = (short) softc->last_io_resid) != 0) {
981 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
982 softc->last_io_resid = 0;
986 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) {
987 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
988 softc->last_ctl_resid = 0;
997 struct scsi_tape_errors *sep =
998 &((union mterrstat *)arg)->scsi_errstat;
1000 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1001 ("saioctl: MTIOCERRSTAT\n"));
1003 bzero(sep, sizeof(*sep));
1004 sep->io_resid = softc->last_io_resid;
1005 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
1006 sizeof (sep->io_sense));
1007 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
1008 sizeof (sep->io_cdb));
1009 sep->ctl_resid = softc->last_ctl_resid;
1010 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
1011 sizeof (sep->ctl_sense));
1012 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
1013 sizeof (sep->ctl_cdb));
1015 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) ||
1017 bzero((caddr_t) &softc->errinfo,
1018 sizeof (softc->errinfo));
1027 PENDING_MOUNT_CHECK(softc, periph, dev);
1029 mt = (struct mtop *)arg;
1032 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1033 ("saioctl: op=0x%x count=0x%x\n",
1034 mt->mt_op, mt->mt_count));
1036 count = mt->mt_count;
1037 switch (mt->mt_op) {
1038 case MTWEOF: /* write an end-of-file marker */
1040 * We don't need to clear the SA_FLAG_TAPE_WRITTEN
1041 * flag because by keeping track of filemarks
1042 * we have last written we know ehether or not
1043 * we need to write more when we close the device.
1045 error = sawritefilemarks(periph, count, FALSE);
1047 case MTWSS: /* write a setmark */
1048 error = sawritefilemarks(periph, count, TRUE);
1050 case MTBSR: /* backward space record */
1051 case MTFSR: /* forward space record */
1052 case MTBSF: /* backward space file */
1053 case MTFSF: /* forward space file */
1054 case MTBSS: /* backward space setmark */
1055 case MTFSS: /* forward space setmark */
1056 case MTEOD: /* space to end of recorded medium */
1060 spaceop = SS_FILEMARKS;
1061 nmarks = softc->filemarks;
1062 error = sacheckeod(periph);
1064 xpt_print(periph->path,
1065 "EOD check prior to spacing failed\n");
1066 softc->flags |= SA_FLAG_EIO_PENDING;
1069 nmarks -= softc->filemarks;
1075 spaceop = SS_BLOCKS;
1086 spaceop = SS_SETMARKS;
1100 nmarks = softc->filemarks;
1102 * XXX: Why are we checking again?
1104 error = sacheckeod(periph);
1107 nmarks -= softc->filemarks;
1108 error = saspace(periph, count - nmarks, spaceop);
1110 * At this point, clear that we've written the tape
1111 * and that we've written any filemarks. We really
1112 * don't know what the applications wishes to do next-
1113 * the sacheckeod's will make sure we terminated the
1114 * tape correctly if we'd been writing, but the next
1115 * action the user application takes will set again
1116 * whether we need to write filemarks.
1119 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1120 softc->filemarks = 0;
1123 case MTREW: /* rewind */
1124 PENDING_MOUNT_CHECK(softc, periph, dev);
1125 (void) sacheckeod(periph);
1126 error = sarewind(periph);
1129 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1130 softc->flags &= ~SA_FLAG_ERR_PENDING;
1131 softc->filemarks = 0;
1133 case MTERASE: /* erase */
1134 PENDING_MOUNT_CHECK(softc, periph, dev);
1135 error = saerase(periph, count);
1137 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1138 softc->flags &= ~SA_FLAG_ERR_PENDING;
1140 case MTRETENS: /* re-tension tape */
1141 PENDING_MOUNT_CHECK(softc, periph, dev);
1142 error = saretension(periph);
1144 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1145 softc->flags &= ~SA_FLAG_ERR_PENDING;
1147 case MTOFFL: /* rewind and put the drive offline */
1149 PENDING_MOUNT_CHECK(softc, periph, dev);
1151 (void) sacheckeod(periph);
1153 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
1154 softc->filemarks = 0;
1156 error = sarewind(periph);
1157 /* clear the frozen flag anyway */
1158 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1161 * Be sure to allow media removal before ejecting.
1164 saprevent(periph, PR_ALLOW);
1166 error = saloadunload(periph, FALSE);
1168 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1173 case MTNOP: /* no operation, sets status only */
1174 case MTCACHE: /* enable controller cache */
1175 case MTNOCACHE: /* disable controller cache */
1179 case MTSETBSIZ: /* Set block size for device */
1181 PENDING_MOUNT_CHECK(softc, periph, dev);
1183 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count,
1186 softc->last_media_blksize =
1187 softc->media_blksize;
1188 softc->media_blksize = count;
1190 softc->flags |= SA_FLAG_FIXED;
1191 if (powerof2(count)) {
1194 softc->blk_mask = count - 1;
1196 softc->blk_mask = ~0;
1197 softc->blk_shift = 0;
1200 * Make the user's desire 'persistent'.
1202 softc->quirks &= ~SA_QUIRK_VARIABLE;
1203 softc->quirks |= SA_QUIRK_FIXED;
1205 softc->flags &= ~SA_FLAG_FIXED;
1206 if (softc->max_blk == 0) {
1207 softc->max_blk = ~0;
1209 softc->blk_shift = 0;
1210 if (softc->blk_gran != 0) {
1212 softc->blk_gran - 1;
1214 softc->blk_mask = 0;
1217 * Make the user's desire 'persistent'.
1219 softc->quirks |= SA_QUIRK_VARIABLE;
1220 softc->quirks &= ~SA_QUIRK_FIXED;
1224 case MTSETDNSTY: /* Set density for device and mode */
1225 PENDING_MOUNT_CHECK(softc, periph, dev);
1227 if (count > UCHAR_MAX) {
1231 error = sasetparams(periph, SA_PARAM_DENSITY,
1235 case MTCOMP: /* enable compression */
1236 PENDING_MOUNT_CHECK(softc, periph, dev);
1238 * Some devices don't support compression, and
1239 * don't like it if you ask them for the
1242 if ((softc->quirks & SA_QUIRK_NOCOMP) ||
1243 (softc->flags & SA_FLAG_COMP_UNSUPP)) {
1247 error = sasetparams(periph, SA_PARAM_COMPRESSION,
1248 0, 0, count, SF_NO_PRINT);
1260 PENDING_MOUNT_CHECK(softc, periph, dev);
1261 error = sardpos(periph, 0, (u_int32_t *) arg);
1264 PENDING_MOUNT_CHECK(softc, periph, dev);
1265 error = sardpos(periph, 1, (u_int32_t *) arg);
1268 PENDING_MOUNT_CHECK(softc, periph, dev);
1269 error = sasetpos(periph, 0, (u_int32_t *) arg);
1272 PENDING_MOUNT_CHECK(softc, periph, dev);
1273 error = sasetpos(periph, 1, (u_int32_t *) arg);
1275 case MTIOCGETEOTMODEL:
1277 if (softc->quirks & SA_QUIRK_1FM)
1281 *((u_int32_t *) arg) = mode;
1283 case MTIOCSETEOTMODEL:
1285 switch (*((u_int32_t *) arg)) {
1287 softc->quirks &= ~SA_QUIRK_2FM;
1288 softc->quirks |= SA_QUIRK_1FM;
1291 softc->quirks &= ~SA_QUIRK_1FM;
1292 softc->quirks |= SA_QUIRK_2FM;
1300 error = cam_periph_ioctl(periph, cmd, arg, saerror);
1305 * Check to see if we cleared a frozen state
1307 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) {
1313 softc->fileno = (daddr_t) -1;
1314 softc->blkno = (daddr_t) -1;
1315 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1316 xpt_print(periph->path,
1317 "tape state now unfrozen.\n");
1323 if (didlockperiph) {
1324 cam_periph_unhold(periph);
1326 cam_periph_unlock(periph);
1336 * Install a global async callback.
1338 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL);
1340 if (status != CAM_REQ_CMP) {
1341 printf("sa: Failed to attach master async callback "
1342 "due to status 0x%x!\n", status);
1347 saoninvalidate(struct cam_periph *periph)
1349 struct sa_softc *softc;
1351 softc = (struct sa_softc *)periph->softc;
1354 * De-register any async callbacks.
1356 xpt_register_async(0, saasync, periph, periph->path);
1358 softc->flags |= SA_FLAG_INVALID;
1361 * Return all queued I/O with ENXIO.
1362 * XXX Handle any transactions queued to the card
1363 * with XPT_ABORT_CCB.
1365 bioq_flush(&softc->bio_queue, NULL, ENXIO);
1366 softc->queue_count = 0;
1368 xpt_print(periph->path, "lost device\n");
1373 sacleanup(struct cam_periph *periph)
1375 struct sa_softc *softc;
1378 softc = (struct sa_softc *)periph->softc;
1380 devstat_remove_entry(softc->device_stats);
1382 destroy_dev(softc->devs.ctl_dev);
1384 for (i = 0; i < SA_NUM_MODES; i++) {
1385 destroy_dev(softc->devs.mode_devs[i].r_dev);
1386 destroy_dev(softc->devs.mode_devs[i].nr_dev);
1387 destroy_dev(softc->devs.mode_devs[i].er_dev);
1390 xpt_print(periph->path, "removing device entry\n");
1391 free(softc, M_SCSISA);
1395 saasync(void *callback_arg, u_int32_t code,
1396 struct cam_path *path, void *arg)
1398 struct cam_periph *periph;
1400 periph = (struct cam_periph *)callback_arg;
1402 case AC_FOUND_DEVICE:
1404 struct ccb_getdev *cgd;
1407 cgd = (struct ccb_getdev *)arg;
1411 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
1415 * Allocate a peripheral instance for
1416 * this device and start the probe
1419 status = cam_periph_alloc(saregister, saoninvalidate,
1421 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
1422 saasync, AC_FOUND_DEVICE, cgd);
1424 if (status != CAM_REQ_CMP
1425 && status != CAM_REQ_INPROG)
1426 printf("saasync: Unable to probe new device "
1427 "due to status 0x%x\n", status);
1431 cam_periph_async(periph, code, path, arg);
1437 saregister(struct cam_periph *periph, void *arg)
1439 struct sa_softc *softc;
1440 struct ccb_getdev *cgd;
1444 cgd = (struct ccb_getdev *)arg;
1445 if (periph == NULL) {
1446 printf("saregister: periph was NULL!!\n");
1447 return (CAM_REQ_CMP_ERR);
1451 printf("saregister: no getdev CCB, can't register device\n");
1452 return (CAM_REQ_CMP_ERR);
1455 softc = (struct sa_softc *)
1456 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO);
1457 if (softc == NULL) {
1458 printf("saregister: Unable to probe new device. "
1459 "Unable to allocate softc\n");
1460 return (CAM_REQ_CMP_ERR);
1462 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
1463 softc->state = SA_STATE_NORMAL;
1464 softc->fileno = (daddr_t) -1;
1465 softc->blkno = (daddr_t) -1;
1467 bioq_init(&softc->bio_queue);
1468 periph->softc = softc;
1471 * See if this device has any quirks.
1473 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1474 (caddr_t)sa_quirk_table,
1475 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
1476 sizeof(*sa_quirk_table), scsi_inquiry_match);
1478 if (match != NULL) {
1479 softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
1480 softc->last_media_blksize =
1481 ((struct sa_quirk_entry *)match)->prefblk;
1483 xpt_print(periph->path, "found quirk entry %d\n",
1484 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table));
1487 softc->quirks = SA_QUIRK_NONE;
1490 * The SA driver supports a blocksize, but we don't know the
1491 * blocksize until we media is inserted. So, set a flag to
1492 * indicate that the blocksize is unavailable right now.
1494 cam_periph_unlock(periph);
1495 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0,
1496 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
1497 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE);
1499 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV,
1500 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1501 0660, "%s%d.ctl", periph->periph_name, periph->unit_number);
1502 softc->devs.ctl_dev->si_drv1 = periph;
1504 for (i = 0; i < SA_NUM_MODES; i++) {
1506 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw,
1507 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R),
1508 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d",
1509 periph->periph_name, periph->unit_number, i);
1510 softc->devs.mode_devs[i].r_dev->si_drv1 = periph;
1512 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw,
1513 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR),
1514 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d",
1515 periph->periph_name, periph->unit_number, i);
1516 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph;
1518 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw,
1519 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER),
1520 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d",
1521 periph->periph_name, periph->unit_number, i);
1522 softc->devs.mode_devs[i].er_dev->si_drv1 = periph;
1525 * Make the (well known) aliases for the first mode.
1530 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev,
1531 "%s%d", periph->periph_name, periph->unit_number);
1532 alias->si_drv1 = periph;
1533 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev,
1534 "n%s%d", periph->periph_name, periph->unit_number);
1535 alias->si_drv1 = periph;
1536 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev,
1537 "e%s%d", periph->periph_name, periph->unit_number);
1538 alias->si_drv1 = periph;
1541 cam_periph_lock(periph);
1544 * Add an async callback so that we get
1545 * notified if this device goes away.
1547 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path);
1549 xpt_announce_periph(periph, NULL);
1551 return (CAM_REQ_CMP);
1555 sastart(struct cam_periph *periph, union ccb *start_ccb)
1557 struct sa_softc *softc;
1559 softc = (struct sa_softc *)periph->softc;
1561 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n"));
1564 switch (softc->state) {
1565 case SA_STATE_NORMAL:
1567 /* Pull a buffer from the queue and get going on it */
1571 * See if there is a buf with work for us to do..
1573 bp = bioq_first(&softc->bio_queue);
1574 if (periph->immediate_priority <= periph->pinfo.priority) {
1575 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1576 ("queuing for immediate ccb\n"));
1577 Set_CCB_Type(start_ccb, SA_CCB_WAITING);
1578 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1580 periph->immediate_priority = CAM_PRIORITY_NONE;
1581 wakeup(&periph->ccb_list);
1582 } else if (bp == NULL) {
1583 xpt_release_ccb(start_ccb);
1584 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) {
1585 struct bio *done_bp;
1587 softc->queue_count--;
1588 bioq_remove(&softc->bio_queue, bp);
1589 bp->bio_resid = bp->bio_bcount;
1591 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
1593 * We now just clear errors in this case
1594 * and let the residual be the notifier.
1597 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
1599 * This can only happen if we're reading
1600 * in fixed length mode. In this case,
1601 * we dump the rest of the list the
1605 if (bioq_first(&softc->bio_queue) != NULL) {
1609 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
1610 bp->bio_error = EIO;
1611 bp->bio_flags |= BIO_ERROR;
1613 bp = bioq_first(&softc->bio_queue);
1615 * Only if we have no other buffers queued up
1616 * do we clear the pending error flag.
1619 softc->flags &= ~SA_FLAG_ERR_PENDING;
1620 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1621 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, "
1622 "%d more buffers queued up\n",
1623 (softc->flags & SA_FLAG_ERR_PENDING),
1624 (bp != NULL)? "not " : " ", softc->queue_count));
1625 xpt_release_ccb(start_ccb);
1630 bioq_remove(&softc->bio_queue, bp);
1631 softc->queue_count--;
1633 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1634 if (softc->blk_shift != 0) {
1636 bp->bio_bcount >> softc->blk_shift;
1637 } else if (softc->media_blksize != 0) {
1638 length = bp->bio_bcount /
1639 softc->media_blksize;
1641 bp->bio_error = EIO;
1642 xpt_print(periph->path, "zero blocksize"
1643 " for FIXED length writes?\n");
1648 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1649 ("issuing a %d fixed record %s\n",
1650 length, (bp->bio_cmd == BIO_READ)? "read" :
1654 length = bp->bio_bcount;
1656 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1657 ("issuing a %d variable byte %s\n",
1658 length, (bp->bio_cmd == BIO_READ)? "read" :
1662 devstat_start_transaction_bio(softc->device_stats, bp);
1664 * Some people have theorized that we should
1665 * suppress illegal length indication if we are
1666 * running in variable block mode so that we don't
1667 * have to request sense every time our requested
1668 * block size is larger than the written block.
1669 * The residual information from the ccb allows
1670 * us to identify this situation anyway. The only
1671 * problem with this is that we will not get
1672 * information about blocks that are larger than
1673 * our read buffer unless we set the block size
1674 * in the mode page to something other than 0.
1676 * I believe that this is a non-issue. If user apps
1677 * don't adjust their read size to match our record
1678 * size, that's just life. Anyway, the typical usage
1679 * would be to issue, e.g., 64KB reads and occasionally
1680 * have to do deal with 512 byte or 1KB intermediate
1683 softc->dsreg = (bp->bio_cmd == BIO_READ)?
1684 MTIO_DSREG_RD : MTIO_DSREG_WR;
1685 scsi_sa_read_write(&start_ccb->csio, 0, sadone,
1686 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ),
1687 FALSE, (softc->flags & SA_FLAG_FIXED) != 0,
1688 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE,
1690 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
1691 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO);
1692 start_ccb->ccb_h.ccb_bp = bp;
1693 bp = bioq_first(&softc->bio_queue);
1694 xpt_action(start_ccb);
1698 /* Have more work to do, so ensure we stay scheduled */
1699 xpt_schedule(periph, 1);
1703 case SA_STATE_ABNORMAL:
1705 panic("state 0x%x in sastart", softc->state);
1712 sadone(struct cam_periph *periph, union ccb *done_ccb)
1714 struct sa_softc *softc;
1715 struct ccb_scsiio *csio;
1717 softc = (struct sa_softc *)periph->softc;
1718 csio = &done_ccb->csio;
1719 switch (CCB_Type(csio)) {
1720 case SA_CCB_BUFFER_IO:
1725 softc->dsreg = MTIO_DSREG_REST;
1726 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1728 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1729 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
1731 * A retry was scheduled, so just return.
1740 * Catastrophic error. Mark the tape as frozen
1741 * (we no longer know tape position).
1743 * Return all queued I/O with EIO, and unfreeze
1744 * our queue so that future transactions that
1745 * attempt to fix this problem can get to the
1750 softc->flags |= SA_FLAG_TAPE_FROZEN;
1751 bioq_flush(&softc->bio_queue, NULL, EIO);
1754 bp->bio_resid = bp->bio_bcount;
1755 bp->bio_error = error;
1756 bp->bio_flags |= BIO_ERROR;
1758 * In the error case, position is updated in saerror.
1761 bp->bio_resid = csio->resid;
1763 if (csio->resid != 0) {
1764 bp->bio_flags |= BIO_ERROR;
1766 if (bp->bio_cmd == BIO_WRITE) {
1767 softc->flags |= SA_FLAG_TAPE_WRITTEN;
1768 softc->filemarks = 0;
1770 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
1771 (softc->blkno != (daddr_t) -1)) {
1772 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1774 if (softc->blk_shift != 0) {
1775 l = bp->bio_bcount >>
1778 l = bp->bio_bcount /
1779 softc->media_blksize;
1781 softc->blkno += (daddr_t) l;
1788 * If we had an error (immediate or pending),
1789 * release the device queue now.
1791 if (error || (softc->flags & SA_FLAG_ERR_PENDING))
1792 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1794 if (error || bp->bio_resid) {
1795 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1796 ("error %d resid %ld count %ld\n", error,
1797 bp->bio_resid, bp->bio_bcount));
1800 biofinish(bp, softc->device_stats, 0);
1803 case SA_CCB_WAITING:
1805 /* Caller will release the CCB */
1806 wakeup(&done_ccb->ccb_h.cbfcnp);
1810 xpt_release_ccb(done_ccb);
1814 * Mount the tape (make sure it's ready for I/O).
1817 samount(struct cam_periph *periph, int oflags, struct cdev *dev)
1819 struct sa_softc *softc;
1824 * oflags can be checked for 'kind' of open (read-only check) - later
1825 * dev can be checked for a control-mode or compression open - later
1827 UNUSED_PARAMETER(oflags);
1828 UNUSED_PARAMETER(dev);
1831 softc = (struct sa_softc *)periph->softc;
1834 * This should determine if something has happend since the last
1835 * open/mount that would invalidate the mount. We do *not* want
1836 * to retry this command- we just want the status. But we only
1837 * do this if we're mounted already- if we're not mounted,
1838 * we don't care about the unit read state and can instead use
1839 * this opportunity to attempt to reserve the tape unit.
1842 if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
1843 ccb = cam_periph_getccb(periph, 1);
1844 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1845 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1846 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1847 softc->device_stats);
1849 if (error == ENXIO) {
1850 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1851 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1852 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1853 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1854 softc->device_stats);
1858 * We don't need to freeze the tape because we
1859 * will now attempt to rewind/load it.
1861 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1862 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
1863 xpt_print(periph->path,
1864 "error %d on TUR in samount\n", error);
1868 error = sareservereleaseunit(periph, TRUE);
1872 ccb = cam_periph_getccb(periph, 1);
1873 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1874 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1875 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1876 softc->device_stats);
1880 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
1881 struct scsi_read_block_limits_data *rblim = NULL;
1882 int comp_enabled, comp_supported;
1883 u_int8_t write_protect, guessing = 0;
1886 * Clear out old state.
1888 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
1889 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
1890 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP);
1891 softc->filemarks = 0;
1894 * *Very* first off, make sure we're loaded to BOT.
1896 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
1897 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
1898 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1899 softc->device_stats);
1903 * In case this doesn't work, do a REWIND instead
1906 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
1907 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1908 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1909 softc->device_stats);
1913 xpt_release_ccb(ccb);
1918 * Do a dummy test read to force access to the
1919 * media so that the drive will really know what's
1920 * there. We actually don't really care what the
1921 * blocksize on tape is and don't expect to really
1922 * read a full record.
1924 rblim = (struct scsi_read_block_limits_data *)
1925 malloc(8192, M_SCSISA, M_WAITOK);
1926 if (rblim == NULL) {
1927 xpt_print(periph->path, "no memory for test read\n");
1928 xpt_release_ccb(ccb);
1933 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
1934 scsi_sa_read_write(&ccb->csio, 0, sadone,
1935 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
1936 (void *) rblim, 8192, SSD_FULL_SIZE,
1938 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1939 softc->device_stats);
1941 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
1942 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1943 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
1944 SF_NO_PRINT | SF_RETRY_UA,
1945 softc->device_stats);
1948 xpt_print(periph->path,
1949 "unable to rewind after test read\n");
1950 xpt_release_ccb(ccb);
1956 * Next off, determine block limits.
1958 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
1959 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
1961 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
1962 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats);
1965 xpt_release_ccb(ccb);
1969 * If it's less than SCSI-2, READ BLOCK LIMITS is not
1970 * a MANDATORY command. Anyway- it doesn't matter-
1971 * we can proceed anyway.
1973 softc->blk_gran = 0;
1974 softc->max_blk = ~0;
1977 if (softc->scsi_rev >= SCSI_REV_SPC) {
1978 softc->blk_gran = RBL_GRAN(rblim);
1980 softc->blk_gran = 0;
1983 * We take max_blk == min_blk to mean a default to
1984 * fixed mode- but note that whatever we get out of
1985 * sagetparams below will actually determine whether
1986 * we are actually *in* fixed mode.
1988 softc->max_blk = scsi_3btoul(rblim->maximum);
1989 softc->min_blk = scsi_2btoul(rblim->minimum);
1994 * Next, perform a mode sense to determine
1995 * current density, blocksize, compression etc.
1997 error = sagetparams(periph, SA_PARAM_ALL,
1998 &softc->media_blksize,
1999 &softc->media_density,
2000 &softc->media_numblks,
2001 &softc->buffer_mode, &write_protect,
2002 &softc->speed, &comp_supported,
2003 &comp_enabled, &softc->comp_algorithm,
2008 * We could work a little harder here. We could
2009 * adjust our attempts to get information. It
2010 * might be an ancient tape drive. If someone
2011 * nudges us, we'll do that.
2017 * If no quirk has determined that this is a device that is
2018 * preferred to be in fixed or variable mode, now is the time
2021 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
2024 * This could be expensive to find out. Luckily we
2025 * only need to do this once. If we start out in
2026 * 'default' mode, try and set ourselves to one
2027 * of the densities that would determine a wad
2028 * of other stuff. Go from highest to lowest.
2030 if (softc->media_density == SCSI_DEFAULT_DENSITY) {
2032 static u_int8_t ctry[] = {
2033 SCSI_DENSITY_HALFINCH_PE,
2034 SCSI_DENSITY_HALFINCH_6250C,
2035 SCSI_DENSITY_HALFINCH_6250,
2036 SCSI_DENSITY_HALFINCH_1600,
2037 SCSI_DENSITY_HALFINCH_800,
2038 SCSI_DENSITY_QIC_4GB,
2039 SCSI_DENSITY_QIC_2GB,
2040 SCSI_DENSITY_QIC_525_320,
2041 SCSI_DENSITY_QIC_150,
2042 SCSI_DENSITY_QIC_120,
2043 SCSI_DENSITY_QIC_24,
2044 SCSI_DENSITY_QIC_11_9TRK,
2045 SCSI_DENSITY_QIC_11_4TRK,
2046 SCSI_DENSITY_QIC_1320,
2047 SCSI_DENSITY_QIC_3080,
2050 for (i = 0; ctry[i]; i++) {
2051 error = sasetparams(periph,
2052 SA_PARAM_DENSITY, 0, ctry[i],
2055 softc->media_density = ctry[i];
2060 switch (softc->media_density) {
2061 case SCSI_DENSITY_QIC_11_4TRK:
2062 case SCSI_DENSITY_QIC_11_9TRK:
2063 case SCSI_DENSITY_QIC_24:
2064 case SCSI_DENSITY_QIC_120:
2065 case SCSI_DENSITY_QIC_150:
2066 case SCSI_DENSITY_QIC_525_320:
2067 case SCSI_DENSITY_QIC_1320:
2068 case SCSI_DENSITY_QIC_3080:
2069 softc->quirks &= ~SA_QUIRK_2FM;
2070 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2071 softc->last_media_blksize = 512;
2073 case SCSI_DENSITY_QIC_4GB:
2074 case SCSI_DENSITY_QIC_2GB:
2075 softc->quirks &= ~SA_QUIRK_2FM;
2076 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2077 softc->last_media_blksize = 1024;
2080 softc->last_media_blksize =
2081 softc->media_blksize;
2082 softc->quirks |= SA_QUIRK_VARIABLE;
2088 * If no quirk has determined that this is a device that needs
2089 * to have 2 Filemarks at EOD, now is the time to find out.
2092 if ((softc->quirks & SA_QUIRK_2FM) == 0) {
2093 switch (softc->media_density) {
2094 case SCSI_DENSITY_HALFINCH_800:
2095 case SCSI_DENSITY_HALFINCH_1600:
2096 case SCSI_DENSITY_HALFINCH_6250:
2097 case SCSI_DENSITY_HALFINCH_6250C:
2098 case SCSI_DENSITY_HALFINCH_PE:
2099 softc->quirks &= ~SA_QUIRK_1FM;
2100 softc->quirks |= SA_QUIRK_2FM;
2108 * Now validate that some info we got makes sense.
2110 if ((softc->max_blk < softc->media_blksize) ||
2111 (softc->min_blk > softc->media_blksize &&
2112 softc->media_blksize)) {
2113 xpt_print(periph->path,
2114 "BLOCK LIMITS (%d..%d) could not match current "
2115 "block settings (%d)- adjusting\n", softc->min_blk,
2116 softc->max_blk, softc->media_blksize);
2117 softc->max_blk = softc->min_blk =
2118 softc->media_blksize;
2122 * Now put ourselves into the right frame of mind based
2127 * If we want to be in FIXED mode and our current blocksize
2128 * is not equal to our last blocksize (if nonzero), try and
2129 * set ourselves to this last blocksize (as the 'preferred'
2130 * block size). The initial quirkmatch at registry sets the
2131 * initial 'last' blocksize. If, for whatever reason, this
2132 * 'last' blocksize is zero, set the blocksize to 512,
2133 * or min_blk if that's larger.
2135 if ((softc->quirks & SA_QUIRK_FIXED) &&
2136 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
2137 (softc->media_blksize != softc->last_media_blksize)) {
2138 softc->media_blksize = softc->last_media_blksize;
2139 if (softc->media_blksize == 0) {
2140 softc->media_blksize = 512;
2141 if (softc->media_blksize < softc->min_blk) {
2142 softc->media_blksize = softc->min_blk;
2145 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2146 softc->media_blksize, 0, 0, SF_NO_PRINT);
2148 xpt_print(periph->path,
2149 "unable to set fixed blocksize to %d\n",
2150 softc->media_blksize);
2155 if ((softc->quirks & SA_QUIRK_VARIABLE) &&
2156 (softc->media_blksize != 0)) {
2157 softc->last_media_blksize = softc->media_blksize;
2158 softc->media_blksize = 0;
2159 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2160 0, 0, 0, SF_NO_PRINT);
2163 * If this fails and we were guessing, just
2164 * assume that we got it wrong and go try
2165 * fixed block mode. Don't even check against
2166 * density code at this point.
2169 softc->quirks &= ~SA_QUIRK_VARIABLE;
2170 softc->quirks |= SA_QUIRK_FIXED;
2171 if (softc->last_media_blksize == 0)
2172 softc->last_media_blksize = 512;
2175 xpt_print(periph->path,
2176 "unable to set variable blocksize\n");
2182 * Now that we have the current block size,
2183 * set up some parameters for sastart's usage.
2185 if (softc->media_blksize) {
2186 softc->flags |= SA_FLAG_FIXED;
2187 if (powerof2(softc->media_blksize)) {
2189 ffs(softc->media_blksize) - 1;
2190 softc->blk_mask = softc->media_blksize - 1;
2192 softc->blk_mask = ~0;
2193 softc->blk_shift = 0;
2197 * The SCSI-3 spec allows 0 to mean "unspecified".
2198 * The SCSI-1 spec allows 0 to mean 'infinite'.
2200 * Either works here.
2202 if (softc->max_blk == 0) {
2203 softc->max_blk = ~0;
2205 softc->blk_shift = 0;
2206 if (softc->blk_gran != 0) {
2207 softc->blk_mask = softc->blk_gran - 1;
2209 softc->blk_mask = 0;
2214 softc->flags |= SA_FLAG_TAPE_WP;
2216 if (comp_supported) {
2217 if (softc->saved_comp_algorithm == 0)
2218 softc->saved_comp_algorithm =
2219 softc->comp_algorithm;
2220 softc->flags |= SA_FLAG_COMP_SUPP;
2222 softc->flags |= SA_FLAG_COMP_ENABLED;
2224 softc->flags |= SA_FLAG_COMP_UNSUPP;
2226 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
2227 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
2228 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
2231 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
2233 xpt_print(periph->path,
2234 "unable to set buffered mode\n");
2236 error = 0; /* not an error */
2241 softc->flags |= SA_FLAG_TAPE_MOUNTED;
2245 free(rblim, M_SCSISA);
2248 softc->dsreg = MTIO_DSREG_NIL;
2250 softc->fileno = softc->blkno = 0;
2251 softc->dsreg = MTIO_DSREG_REST;
2253 #ifdef SA_1FM_AT_EOD
2254 if ((softc->quirks & SA_QUIRK_2FM) == 0)
2255 softc->quirks |= SA_QUIRK_1FM;
2257 if ((softc->quirks & SA_QUIRK_1FM) == 0)
2258 softc->quirks |= SA_QUIRK_2FM;
2261 xpt_release_ccb(ccb);
2264 * If we return an error, we're not mounted any more,
2265 * so release any device reservation.
2268 (void) sareservereleaseunit(periph, FALSE);
2271 * Clear I/O residual.
2273 softc->last_io_resid = 0;
2274 softc->last_ctl_resid = 0;
2280 * How many filemarks do we need to write if we were to terminate the
2281 * tape session right now? Note that this can be a negative number
2285 samarkswanted(struct cam_periph *periph)
2288 struct sa_softc *softc;
2290 softc = (struct sa_softc *)periph->softc;
2292 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
2294 if (softc->quirks & SA_QUIRK_2FM)
2297 markswanted -= softc->filemarks;
2298 return (markswanted);
2302 sacheckeod(struct cam_periph *periph)
2307 markswanted = samarkswanted(periph);
2309 if (markswanted > 0) {
2310 error = sawritefilemarks(periph, markswanted, FALSE);
2318 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
2320 static const char *toobig =
2321 "%d-byte tape record bigger than supplied buffer\n";
2322 struct cam_periph *periph;
2323 struct sa_softc *softc;
2324 struct ccb_scsiio *csio;
2325 struct scsi_sense_data *sense;
2326 u_int32_t resid = 0;
2329 int error_code, sense_key, asc, ascq, error, aqvalid;
2331 periph = xpt_path_periph(ccb->ccb_h.path);
2332 softc = (struct sa_softc *)periph->softc;
2334 sense = &csio->sense_data;
2335 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq);
2336 aqvalid = sense->extra_len >= 6;
2339 status = csio->ccb_h.status & CAM_STATUS_MASK;
2342 * Calculate/latch up, any residuals... We do this in a funny 2-step
2343 * so we can print stuff here if we have CAM_DEBUG enabled for this
2346 if (status == CAM_SCSI_STATUS_ERROR) {
2347 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
2348 info = (int32_t) scsi_4btoul(sense->info);
2350 if ((softc->flags & SA_FLAG_FIXED) != 0)
2351 resid *= softc->media_blksize;
2353 resid = csio->dxfer_len;
2355 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2356 if (softc->media_blksize)
2357 info /= softc->media_blksize;
2360 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) {
2361 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
2362 sizeof (struct scsi_sense_data));
2363 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
2364 (int) csio->cdb_len);
2365 softc->last_io_resid = resid;
2366 softc->last_resid_was_io = 1;
2368 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
2369 sizeof (struct scsi_sense_data));
2370 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
2371 (int) csio->cdb_len);
2372 softc->last_ctl_resid = resid;
2373 softc->last_resid_was_io = 0;
2375 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
2376 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d "
2377 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
2378 sense_key, asc, ascq, status,
2379 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len));
2381 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2382 ("Cam Status 0x%x\n", status));
2388 case CAM_SCSI_STATUS_ERROR:
2390 * If a read/write command, we handle it here.
2392 if (CCB_Type(csio) != SA_CCB_WAITING) {
2396 * If this was just EOM/EOP, Filemark, Setmark or ILI detected
2397 * on a non read/write command, we assume it's not an error
2398 * and propagate the residule and return.
2400 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) ||
2401 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
2402 csio->resid = resid;
2407 * Otherwise, we let the common code handle this.
2409 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2413 * We cannot depend upon CAM honoring retry counts for these.
2415 case CAM_SCSI_BUS_RESET:
2417 if (ccb->ccb_h.retry_count <= 0) {
2422 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2426 * Handle filemark, end of tape, mismatched record sizes....
2427 * From this point out, we're only handling read/write cases.
2428 * Handle writes && reads differently.
2431 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
2432 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
2433 csio->resid = resid;
2435 } else if (sense->flags & SSD_EOM) {
2436 softc->flags |= SA_FLAG_EOM_PENDING;
2438 * Grotesque as it seems, the few times
2439 * I've actually seen a non-zero resid,
2440 * the tape drive actually lied and had
2441 * written all the data!.
2446 csio->resid = resid;
2447 if (sense_key == SSD_KEY_BLANK_CHECK) {
2448 if (softc->quirks & SA_QUIRK_1FM) {
2450 softc->flags |= SA_FLAG_EOM_PENDING;
2454 } else if (sense->flags & SSD_FILEMARK) {
2455 if (softc->flags & SA_FLAG_FIXED) {
2457 softc->flags |= SA_FLAG_EOF_PENDING;
2460 * Unconditionally, if we detected a filemark on a read,
2461 * mark that we've run moved a file ahead.
2463 if (softc->fileno != (daddr_t) -1) {
2466 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
2472 * Incorrect Length usually applies to read, but can apply to writes.
2474 if (error == 0 && (sense->flags & SSD_ILI)) {
2476 xpt_print(csio->ccb_h.path, toobig,
2477 csio->dxfer_len - info);
2478 csio->resid = csio->dxfer_len;
2481 csio->resid = resid;
2482 if (softc->flags & SA_FLAG_FIXED) {
2483 softc->flags |= SA_FLAG_EIO_PENDING;
2486 * Bump the block number if we hadn't seen a filemark.
2487 * Do this independent of errors (we've moved anyway).
2489 if ((sense->flags & SSD_FILEMARK) == 0) {
2490 if (softc->blkno != (daddr_t) -1) {
2492 csio->ccb_h.ccb_pflags |=
2493 SA_POSITION_UPDATED;
2501 * Unfreeze the queue if frozen as we're not returning anything
2502 * to our waiters that would indicate an I/O error has occurred
2512 sagetparams(struct cam_periph *periph, sa_params params_to_get,
2513 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
2514 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
2515 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
2520 struct scsi_mode_header_6 *mode_hdr;
2521 struct scsi_mode_blk_desc *mode_blk;
2522 int mode_buffer_len;
2523 struct sa_softc *softc;
2528 softc = (struct sa_softc *)periph->softc;
2529 ccb = cam_periph_getccb(periph, 1);
2530 if (softc->quirks & SA_QUIRK_NO_CPAGE)
2531 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2533 cpage = SA_DATA_COMPRESSION_PAGE;
2536 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2538 if (params_to_get & SA_PARAM_COMPRESSION) {
2539 if (softc->quirks & SA_QUIRK_NOCOMP) {
2540 *comp_supported = FALSE;
2541 params_to_get &= ~SA_PARAM_COMPRESSION;
2543 mode_buffer_len += sizeof (sa_comp_t);
2546 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_WAITOK | M_ZERO);
2547 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2548 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2550 /* it is safe to retry this */
2551 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2552 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
2553 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
2554 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2556 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2557 softc->device_stats);
2560 status = ccb->ccb_h.status & CAM_STATUS_MASK;
2562 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
2564 * Hmm. Let's see if we can try another page...
2565 * If we've already done that, give up on compression
2566 * for this device and remember this for the future
2567 * and attempt the request without asking for compression
2570 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2571 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2574 softc->quirks |= SA_QUIRK_NOCOMP;
2575 free(mode_buffer, M_SCSISA);
2577 } else if (status == CAM_SCSI_STATUS_ERROR) {
2578 /* Tell the user about the fatal error. */
2579 scsi_sense_print(&ccb->csio);
2580 goto sagetparamsexit;
2584 * If the user only wants the compression information, and
2585 * the device doesn't send back the block descriptor, it's
2586 * no big deal. If the user wants more than just
2587 * compression, though, and the device doesn't pass back the
2588 * block descriptor, we need to send another mode sense to
2589 * get the block descriptor.
2591 if ((mode_hdr->blk_desc_len == 0) &&
2592 (params_to_get & SA_PARAM_COMPRESSION) &&
2593 (params_to_get & ~(SA_PARAM_COMPRESSION))) {
2596 * Decrease the mode buffer length by the size of
2597 * the compression page, to make sure the data
2598 * there doesn't get overwritten.
2600 mode_buffer_len -= sizeof (sa_comp_t);
2603 * Now move the compression page that we presumably
2604 * got back down the memory chunk a little bit so
2605 * it doesn't get spammed.
2607 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
2608 bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
2611 * Now, we issue another mode sense and just ask
2612 * for the block descriptor, etc.
2615 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2616 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
2617 mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
2620 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2621 softc->device_stats);
2625 goto sagetparamsexit;
2628 if (params_to_get & SA_PARAM_BLOCKSIZE)
2629 *blocksize = scsi_3btoul(mode_blk->blklen);
2631 if (params_to_get & SA_PARAM_NUMBLOCKS)
2632 *numblocks = scsi_3btoul(mode_blk->nblocks);
2634 if (params_to_get & SA_PARAM_BUFF_MODE)
2635 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
2637 if (params_to_get & SA_PARAM_DENSITY)
2638 *density = mode_blk->density;
2640 if (params_to_get & SA_PARAM_WP)
2641 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
2643 if (params_to_get & SA_PARAM_SPEED)
2644 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
2646 if (params_to_get & SA_PARAM_COMPRESSION) {
2647 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
2648 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2649 struct scsi_data_compression_page *cp = &ntcs->dcomp;
2651 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
2653 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
2654 *comp_algorithm = scsi_4btoul(cp->comp_algorithm);
2656 struct scsi_dev_conf_page *cp = &ntcs->dconf;
2658 * We don't really know whether this device supports
2659 * Data Compression if the the algorithm field is
2660 * zero. Just say we do.
2662 *comp_supported = TRUE;
2664 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
2665 *comp_algorithm = cp->sel_comp_alg;
2668 bcopy(ntcs, tcs, sizeof (sa_comp_t));
2671 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2673 char *xyz = mode_buffer;
2674 xpt_print_path(periph->path);
2675 printf("Mode Sense Data=");
2676 for (idx = 0; idx < mode_buffer_len; idx++)
2677 printf(" 0x%02x", xyz[idx] & 0xff);
2683 xpt_release_ccb(ccb);
2684 free(mode_buffer, M_SCSISA);
2689 * The purpose of this function is to set one of four different parameters
2693 * - compression / compression algorithm
2696 * The assumption is that this will be called from saioctl(), and therefore
2697 * from a process context. Thus the waiting malloc calls below. If that
2698 * assumption ever changes, the malloc calls should be changed to be
2701 * Any or all of the four parameters may be set when this function is
2702 * called. It should handle setting more than one parameter at once.
2705 sasetparams(struct cam_periph *periph, sa_params params_to_set,
2706 u_int32_t blocksize, u_int8_t density, u_int32_t calg,
2707 u_int32_t sense_flags)
2709 struct sa_softc *softc;
2710 u_int32_t current_blocksize;
2711 u_int32_t current_calg;
2712 u_int8_t current_density;
2713 u_int8_t current_speed;
2714 int comp_enabled, comp_supported;
2716 int mode_buffer_len;
2717 struct scsi_mode_header_6 *mode_hdr;
2718 struct scsi_mode_blk_desc *mode_blk;
2719 sa_comp_t *ccomp, *cpage;
2721 union ccb *ccb = NULL;
2724 softc = (struct sa_softc *)periph->softc;
2726 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_WAITOK);
2729 * Since it doesn't make sense to set the number of blocks, or
2730 * write protection, we won't try to get the current value. We
2731 * always want to get the blocksize, so we can set it back to the
2734 error = sagetparams(periph,
2735 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED,
2736 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL,
2737 ¤t_speed, &comp_supported, &comp_enabled,
2738 ¤t_calg, ccomp);
2741 free(ccomp, M_SCSISA);
2745 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2746 if (params_to_set & SA_PARAM_COMPRESSION)
2747 mode_buffer_len += sizeof (sa_comp_t);
2749 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_WAITOK | M_ZERO);
2751 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2752 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2754 ccb = cam_periph_getccb(periph, 1);
2758 if (params_to_set & SA_PARAM_COMPRESSION) {
2760 cpage = (sa_comp_t *)&mode_blk[1];
2762 cpage = (sa_comp_t *)&mode_hdr[1];
2764 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2765 cpage->hdr.pagecode &= ~0x80;
2770 * If the caller wants us to set the blocksize, use the one they
2771 * pass in. Otherwise, use the blocksize we got back from the
2772 * mode select above.
2775 if (params_to_set & SA_PARAM_BLOCKSIZE)
2776 scsi_ulto3b(blocksize, mode_blk->blklen);
2778 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2781 * Set density if requested, else preserve old density.
2782 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2783 * devices, else density we've latched up in our softc.
2785 if (params_to_set & SA_PARAM_DENSITY) {
2786 mode_blk->density = density;
2787 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2788 mode_blk->density = SCSI_SAME_DENSITY;
2790 mode_blk->density = softc->media_density;
2795 * For mode selects, these two fields must be zero.
2797 mode_hdr->data_length = 0;
2798 mode_hdr->medium_type = 0;
2800 /* set the speed to the current value */
2801 mode_hdr->dev_spec = current_speed;
2803 /* if set, set single-initiator buffering mode */
2804 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) {
2805 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
2809 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
2811 mode_hdr->blk_desc_len = 0;
2814 * First, if the user wants us to set the compression algorithm or
2815 * just turn compression on, check to make sure that this drive
2816 * supports compression.
2818 if (params_to_set & SA_PARAM_COMPRESSION) {
2820 * If the compression algorithm is 0, disable compression.
2821 * If the compression algorithm is non-zero, enable
2822 * compression and set the compression type to the
2823 * specified compression algorithm, unless the algorithm is
2824 * MT_COMP_ENABLE. In that case, we look at the
2825 * compression algorithm that is currently set and if it is
2826 * non-zero, we leave it as-is. If it is zero, and we have
2827 * saved a compression algorithm from a time when
2828 * compression was enabled before, set the compression to
2831 switch (ccomp->hdr.pagecode & ~0x80) {
2832 case SA_DEVICE_CONFIGURATION_PAGE:
2834 struct scsi_dev_conf_page *dcp = &cpage->dconf;
2836 dcp->sel_comp_alg = SA_COMP_NONE;
2839 if (calg != MT_COMP_ENABLE) {
2840 dcp->sel_comp_alg = calg;
2841 } else if (dcp->sel_comp_alg == SA_COMP_NONE &&
2842 softc->saved_comp_algorithm != 0) {
2843 dcp->sel_comp_alg = softc->saved_comp_algorithm;
2847 case SA_DATA_COMPRESSION_PAGE:
2848 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
2849 struct scsi_data_compression_page *dcp = &cpage->dcomp;
2852 * Disable compression, but leave the
2853 * decompression and the capability bit
2856 dcp->dce_and_dcc = SA_DCP_DCC;
2857 dcp->dde_and_red |= SA_DCP_DDE;
2860 /* enable compression && decompression */
2861 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
2862 dcp->dde_and_red |= SA_DCP_DDE;
2864 * If there, use compression algorithm from caller.
2865 * Otherwise, if there's a saved compression algorithm
2866 * and there is no current algorithm, use the saved
2867 * algorithm. Else parrot back what we got and hope
2870 if (calg != MT_COMP_ENABLE) {
2871 scsi_ulto4b(calg, dcp->comp_algorithm);
2872 scsi_ulto4b(calg, dcp->decomp_algorithm);
2873 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
2874 softc->saved_comp_algorithm != 0) {
2875 scsi_ulto4b(softc->saved_comp_algorithm,
2876 dcp->comp_algorithm);
2877 scsi_ulto4b(softc->saved_comp_algorithm,
2878 dcp->decomp_algorithm);
2883 * Compression does not appear to be supported-
2884 * at least via the DATA COMPRESSION page. It
2885 * would be too much to ask us to believe that
2886 * the page itself is supported, but incorrectly
2887 * reports an ability to manipulate data compression,
2888 * so we'll assume that this device doesn't support
2889 * compression. We can just fall through for that.
2894 * The drive doesn't seem to support compression,
2895 * so turn off the set compression bit.
2897 params_to_set &= ~SA_PARAM_COMPRESSION;
2898 xpt_print(periph->path,
2899 "device does not seem to support compression\n");
2902 * If that was the only thing the user wanted us to set,
2903 * clean up allocated resources and return with
2904 * 'operation not supported'.
2906 if (params_to_set == SA_PARAM_NONE) {
2907 free(mode_buffer, M_SCSISA);
2908 xpt_release_ccb(ccb);
2913 * That wasn't the only thing the user wanted us to set.
2914 * So, decrease the stated mode buffer length by the
2915 * size of the compression mode page.
2917 mode_buffer_len -= sizeof(sa_comp_t);
2921 /* It is safe to retry this operation */
2922 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
2923 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
2924 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2926 error = cam_periph_runccb(ccb, saerror, 0,
2927 sense_flags, softc->device_stats);
2930 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2932 char *xyz = mode_buffer;
2933 xpt_print_path(periph->path);
2934 printf("Err%d, Mode Select Data=", error);
2935 for (idx = 0; idx < mode_buffer_len; idx++)
2936 printf(" 0x%02x", xyz[idx] & 0xff);
2943 * If we can, try without setting density/blocksize.
2946 if ((params_to_set &
2947 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
2952 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2953 cpage = (sa_comp_t *)&mode_blk[1];
2957 * If we were setting the blocksize, and that failed, we
2958 * want to set it to its original value. If we weren't
2959 * setting the blocksize, we don't want to change it.
2961 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2964 * Set density if requested, else preserve old density.
2965 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2966 * devices, else density we've latched up in our softc.
2968 if (params_to_set & SA_PARAM_DENSITY) {
2969 mode_blk->density = current_density;
2970 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2971 mode_blk->density = SCSI_SAME_DENSITY;
2973 mode_blk->density = softc->media_density;
2976 if (params_to_set & SA_PARAM_COMPRESSION)
2977 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2980 * The retry count is the only CCB field that might have been
2981 * changed that we care about, so reset it back to 1.
2983 ccb->ccb_h.retry_count = 1;
2984 cam_periph_runccb(ccb, saerror, 0, sense_flags,
2985 softc->device_stats);
2989 xpt_release_ccb(ccb);
2992 free(ccomp, M_SCSISA);
2994 if (params_to_set & SA_PARAM_COMPRESSION) {
2996 softc->flags &= ~SA_FLAG_COMP_ENABLED;
2998 * Even if we get an error setting compression,
2999 * do not say that we don't support it. We could
3000 * have been wrong, or it may be media specific.
3001 * softc->flags &= ~SA_FLAG_COMP_SUPP;
3003 softc->saved_comp_algorithm = softc->comp_algorithm;
3004 softc->comp_algorithm = 0;
3006 softc->flags |= SA_FLAG_COMP_ENABLED;
3007 softc->comp_algorithm = calg;
3011 free(mode_buffer, M_SCSISA);
3016 saprevent(struct cam_periph *periph, int action)
3018 struct sa_softc *softc;
3022 softc = (struct sa_softc *)periph->softc;
3024 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
3026 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
3030 * We can be quiet about illegal requests.
3032 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
3037 ccb = cam_periph_getccb(periph, 1);
3039 /* It is safe to retry this operation */
3040 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
3041 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3043 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats);
3046 if (action == PR_ALLOW)
3047 softc->flags &= ~SA_FLAG_TAPE_LOCKED;
3049 softc->flags |= SA_FLAG_TAPE_LOCKED;
3052 xpt_release_ccb(ccb);
3056 sarewind(struct cam_periph *periph)
3059 struct sa_softc *softc;
3062 softc = (struct sa_softc *)periph->softc;
3064 ccb = cam_periph_getccb(periph, 1);
3066 /* It is safe to retry this operation */
3067 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3068 SSD_FULL_SIZE, REWIND_TIMEOUT);
3070 softc->dsreg = MTIO_DSREG_REW;
3071 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3072 softc->dsreg = MTIO_DSREG_REST;
3074 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3075 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3077 xpt_release_ccb(ccb);
3079 softc->fileno = softc->blkno = (daddr_t) 0;
3081 softc->fileno = softc->blkno = (daddr_t) -1;
3086 saspace(struct cam_periph *periph, int count, scsi_space_code code)
3089 struct sa_softc *softc;
3092 softc = (struct sa_softc *)periph->softc;
3094 ccb = cam_periph_getccb(periph, 1);
3096 /* This cannot be retried */
3098 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
3099 SSD_FULL_SIZE, SPACE_TIMEOUT);
3102 * Clear residual because we will be using it.
3104 softc->last_ctl_resid = 0;
3106 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
3107 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3108 softc->dsreg = MTIO_DSREG_REST;
3110 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3111 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3113 xpt_release_ccb(ccb);
3116 * If a spacing operation has failed, we need to invalidate
3119 * If the spacing operation was setmarks or to end of recorded data,
3120 * we no longer know our relative position.
3122 * If the spacing operations was spacing files in reverse, we
3123 * take account of the residual, but still check against less
3124 * than zero- if we've gone negative, we must have hit BOT.
3126 * If the spacing operations was spacing records in reverse and
3127 * we have a residual, we've either hit BOT or hit a filemark.
3128 * In the former case, we know our new record number (0). In
3129 * the latter case, we have absolutely no idea what the real
3130 * record number is- we've stopped between the end of the last
3131 * record in the previous file and the filemark that stopped
3132 * our spacing backwards.
3135 softc->fileno = softc->blkno = (daddr_t) -1;
3136 } else if (code == SS_SETMARKS || code == SS_EOD) {
3137 softc->fileno = softc->blkno = (daddr_t) -1;
3138 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
3139 softc->fileno += (count - softc->last_ctl_resid);
3140 if (softc->fileno < 0) /* we must of hit BOT */
3143 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
3144 softc->blkno += (count - softc->last_ctl_resid);
3146 if (softc->last_ctl_resid || softc->blkno < 0) {
3147 if (softc->fileno == 0) {
3150 softc->blkno = (daddr_t) -1;
3159 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
3162 struct sa_softc *softc;
3165 softc = (struct sa_softc *)periph->softc;
3166 if (softc->open_rdonly)
3169 ccb = cam_periph_getccb(periph, 1);
3171 * Clear residual because we will be using it.
3173 softc->last_ctl_resid = 0;
3175 softc->dsreg = MTIO_DSREG_FMK;
3176 /* this *must* not be retried */
3177 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
3178 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
3179 softc->dsreg = MTIO_DSREG_REST;
3182 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3184 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3185 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3187 if (error == 0 && nmarks) {
3188 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3189 nwm = nmarks - softc->last_ctl_resid;
3190 softc->filemarks += nwm;
3193 xpt_release_ccb(ccb);
3196 * Update relative positions (if we're doing that).
3199 softc->fileno = softc->blkno = (daddr_t) -1;
3200 } else if (softc->fileno != (daddr_t) -1) {
3201 softc->fileno += nwm;
3208 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3210 struct scsi_tape_position_data loc;
3212 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3216 * We try and flush any buffered writes here if we were writing
3217 * and we're trying to get hardware block position. It eats
3218 * up performance substantially, but I'm wary of drive firmware.
3220 * I think that *logical* block position is probably okay-
3221 * but hardware block position might have to wait for data
3222 * to hit media to be valid. Caveat Emptor.
3225 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
3226 error = sawritefilemarks(periph, 0, 0);
3227 if (error && error != EACCES)
3231 ccb = cam_periph_getccb(periph, 1);
3232 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3233 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3234 softc->dsreg = MTIO_DSREG_RBSY;
3235 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3236 softc->dsreg = MTIO_DSREG_REST;
3237 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3238 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3241 if (loc.flags & SA_RPOS_UNCERTAIN) {
3242 error = EINVAL; /* nothing is certain */
3244 *blkptr = scsi_4btoul(loc.firstblk);
3248 xpt_release_ccb(ccb);
3253 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3256 struct sa_softc *softc;
3260 * We used to try and flush any buffered writes here.
3261 * Now we push this onto user applications to either
3262 * flush the pending writes themselves (via a zero count
3263 * WRITE FILEMARKS command) or they can trust their tape
3264 * drive to do this correctly for them.
3267 softc = (struct sa_softc *)periph->softc;
3268 ccb = cam_periph_getccb(periph, 1);
3271 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3272 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT);
3275 softc->dsreg = MTIO_DSREG_POS;
3276 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3277 softc->dsreg = MTIO_DSREG_REST;
3278 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3279 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3280 xpt_release_ccb(ccb);
3282 * Note relative file && block number position as now unknown.
3284 softc->fileno = softc->blkno = (daddr_t) -1;
3289 saretension(struct cam_periph *periph)
3292 struct sa_softc *softc;
3295 softc = (struct sa_softc *)periph->softc;
3297 ccb = cam_periph_getccb(periph, 1);
3299 /* It is safe to retry this operation */
3300 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3301 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
3303 softc->dsreg = MTIO_DSREG_TEN;
3304 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3305 softc->dsreg = MTIO_DSREG_REST;
3307 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3308 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3309 xpt_release_ccb(ccb);
3311 softc->fileno = softc->blkno = (daddr_t) 0;
3313 softc->fileno = softc->blkno = (daddr_t) -1;
3318 sareservereleaseunit(struct cam_periph *periph, int reserve)
3321 struct sa_softc *softc;
3324 softc = (struct sa_softc *)periph->softc;
3325 ccb = cam_periph_getccb(periph, 1);
3327 /* It is safe to retry this operation */
3328 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
3329 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
3330 softc->dsreg = MTIO_DSREG_RBSY;
3331 error = cam_periph_runccb(ccb, saerror, 0,
3332 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats);
3333 softc->dsreg = MTIO_DSREG_REST;
3335 xpt_release_ccb(ccb);
3338 * If the error was Illegal Request, then the device doesn't support
3339 * RESERVE/RELEASE. This is not an error.
3341 if (error == EINVAL) {
3349 saloadunload(struct cam_periph *periph, int load)
3352 struct sa_softc *softc;
3355 softc = (struct sa_softc *)periph->softc;
3357 ccb = cam_periph_getccb(periph, 1);
3359 /* It is safe to retry this operation */
3360 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3361 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
3363 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
3364 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3365 softc->dsreg = MTIO_DSREG_REST;
3367 xpt_release_ccb(ccb);
3369 if (error || load == 0)
3370 softc->fileno = softc->blkno = (daddr_t) -1;
3371 else if (error == 0)
3372 softc->fileno = softc->blkno = (daddr_t) 0;
3377 saerase(struct cam_periph *periph, int longerase)
3381 struct sa_softc *softc;
3384 softc = (struct sa_softc *)periph->softc;
3385 if (softc->open_rdonly)
3388 ccb = cam_periph_getccb(periph, 1);
3390 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
3391 SSD_FULL_SIZE, ERASE_TIMEOUT);
3393 softc->dsreg = MTIO_DSREG_ZER;
3394 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
3395 softc->dsreg = MTIO_DSREG_REST;
3397 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3398 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3399 xpt_release_ccb(ccb);
3403 #endif /* _KERNEL */
3406 * Read tape block limits command.
3409 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
3410 void (*cbfcnp)(struct cam_periph *, union ccb *),
3411 u_int8_t tag_action,
3412 struct scsi_read_block_limits_data *rlimit_buf,
3413 u_int8_t sense_len, u_int32_t timeout)
3415 struct scsi_read_block_limits *scsi_cmd;
3417 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3418 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
3419 sizeof(*scsi_cmd), timeout);
3421 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
3422 bzero(scsi_cmd, sizeof(*scsi_cmd));
3423 scsi_cmd->opcode = READ_BLOCK_LIMITS;
3427 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
3428 void (*cbfcnp)(struct cam_periph *, union ccb *),
3429 u_int8_t tag_action, int readop, int sli,
3430 int fixed, u_int32_t length, u_int8_t *data_ptr,
3431 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
3433 struct scsi_sa_rw *scsi_cmd;
3435 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
3436 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE;
3437 scsi_cmd->sli_fixed = 0;
3439 scsi_cmd->sli_fixed |= SAR_SLI;
3441 scsi_cmd->sli_fixed |= SARW_FIXED;
3442 scsi_ulto3b(length, scsi_cmd->length);
3443 scsi_cmd->control = 0;
3445 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT,
3446 tag_action, data_ptr, dxfer_len, sense_len,
3447 sizeof(*scsi_cmd), timeout);
3451 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
3452 void (*cbfcnp)(struct cam_periph *, union ccb *),
3453 u_int8_t tag_action, int immediate, int eot,
3454 int reten, int load, u_int8_t sense_len,
3457 struct scsi_load_unload *scsi_cmd;
3459 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
3460 bzero(scsi_cmd, sizeof(*scsi_cmd));
3461 scsi_cmd->opcode = LOAD_UNLOAD;
3463 scsi_cmd->immediate = SLU_IMMED;
3465 scsi_cmd->eot_reten_load |= SLU_EOT;
3467 scsi_cmd->eot_reten_load |= SLU_RETEN;
3469 scsi_cmd->eot_reten_load |= SLU_LOAD;
3471 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3472 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
3476 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
3477 void (*cbfcnp)(struct cam_periph *, union ccb *),
3478 u_int8_t tag_action, int immediate, u_int8_t sense_len,
3481 struct scsi_rewind *scsi_cmd;
3483 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
3484 bzero(scsi_cmd, sizeof(*scsi_cmd));
3485 scsi_cmd->opcode = REWIND;
3487 scsi_cmd->immediate = SREW_IMMED;
3489 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3490 0, sense_len, sizeof(*scsi_cmd), timeout);
3494 scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
3495 void (*cbfcnp)(struct cam_periph *, union ccb *),
3496 u_int8_t tag_action, scsi_space_code code,
3497 u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
3499 struct scsi_space *scsi_cmd;
3501 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
3502 scsi_cmd->opcode = SPACE;
3503 scsi_cmd->code = code;
3504 scsi_ulto3b(count, scsi_cmd->count);
3505 scsi_cmd->control = 0;
3507 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3508 0, sense_len, sizeof(*scsi_cmd), timeout);
3512 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
3513 void (*cbfcnp)(struct cam_periph *, union ccb *),
3514 u_int8_t tag_action, int immediate, int setmark,
3515 u_int32_t num_marks, u_int8_t sense_len,
3518 struct scsi_write_filemarks *scsi_cmd;
3520 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
3521 bzero(scsi_cmd, sizeof(*scsi_cmd));
3522 scsi_cmd->opcode = WRITE_FILEMARKS;
3524 scsi_cmd->byte2 |= SWFMRK_IMMED;
3526 scsi_cmd->byte2 |= SWFMRK_WSMK;
3528 scsi_ulto3b(num_marks, scsi_cmd->num_marks);
3530 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3531 0, sense_len, sizeof(*scsi_cmd), timeout);
3535 * The reserve and release unit commands differ only by their opcodes.
3538 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
3539 void (*cbfcnp)(struct cam_periph *, union ccb *),
3540 u_int8_t tag_action, int third_party,
3541 int third_party_id, u_int8_t sense_len,
3542 u_int32_t timeout, int reserve)
3544 struct scsi_reserve_release_unit *scsi_cmd;
3546 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
3547 bzero(scsi_cmd, sizeof(*scsi_cmd));
3550 scsi_cmd->opcode = RESERVE_UNIT;
3552 scsi_cmd->opcode = RELEASE_UNIT;
3555 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
3556 scsi_cmd->lun_thirdparty |=
3557 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
3560 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3561 0, sense_len, sizeof(*scsi_cmd), timeout);
3565 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
3566 void (*cbfcnp)(struct cam_periph *, union ccb *),
3567 u_int8_t tag_action, int immediate, int long_erase,
3568 u_int8_t sense_len, u_int32_t timeout)
3570 struct scsi_erase *scsi_cmd;
3572 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
3573 bzero(scsi_cmd, sizeof(*scsi_cmd));
3575 scsi_cmd->opcode = ERASE;
3578 scsi_cmd->lun_imm_long |= SE_IMMED;
3581 scsi_cmd->lun_imm_long |= SE_LONG;
3583 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3584 0, sense_len, sizeof(*scsi_cmd), timeout);
3588 * Read Tape Position command.
3591 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
3592 void (*cbfcnp)(struct cam_periph *, union ccb *),
3593 u_int8_t tag_action, int hardsoft,
3594 struct scsi_tape_position_data *sbp,
3595 u_int8_t sense_len, u_int32_t timeout)
3597 struct scsi_tape_read_position *scmd;
3599 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3600 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
3601 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
3602 bzero(scmd, sizeof(*scmd));
3603 scmd->opcode = READ_POSITION;
3604 scmd->byte1 = hardsoft;
3608 * Set Tape Position command.
3611 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries,
3612 void (*cbfcnp)(struct cam_periph *, union ccb *),
3613 u_int8_t tag_action, int hardsoft, u_int32_t blkno,
3614 u_int8_t sense_len, u_int32_t timeout)
3616 struct scsi_tape_locate *scmd;
3618 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3619 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout);
3620 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
3621 bzero(scmd, sizeof(*scmd));
3622 scmd->opcode = LOCATE;
3624 scmd->byte1 |= SA_SPOS_BT;
3625 scsi_ulto4b(blkno, scmd->blkaddr);