2 * $FreeBSD: src/sys/cam/scsi/scsi_sa.c,v 1.45.2.13 2002/12/17 17:08:50 trhodes Exp $
4 * Implementation of SCSI Sequential Access Peripheral driver for CAM.
6 * Copyright (c) 1999, 2000 Matthew Jacob
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions, and the following disclaimer,
14 * without modification, immediately at the beginning of the file.
15 * 2. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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/malloc.h>
48 #include <sys/thread2.h>
50 #include <sys/fcntl.h>
51 #include <sys/devicestat.h>
52 #include <machine/limits.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"
67 #include "scsi_message.h"
75 #define SA_IO_TIMEOUT 4
77 #ifndef SA_SPACE_TIMEOUT
78 #define SA_SPACE_TIMEOUT 1 * 60
80 #ifndef SA_REWIND_TIMEOUT
81 #define SA_REWIND_TIMEOUT 2 * 60
83 #ifndef SA_ERASE_TIMEOUT
84 #define SA_ERASE_TIMEOUT 4 * 60
87 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */
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)
95 * Additional options that can be set for config: SA_1FM_AT_EOT
98 #ifndef UNUSED_PARAMETER
99 #define UNUSED_PARAMETER(x) x = x
103 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \
104 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE)
110 MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers");
113 SA_STATE_NORMAL, SA_STATE_ABNORMAL
116 #define ccb_pflags ppriv_field0
117 #define ccb_bio ppriv_ptr1
119 #define SA_CCB_BUFFER_IO 0x0
120 #define SA_CCB_WAITING 0x1
121 #define SA_CCB_TYPEMASK 0x1
122 #define SA_POSITION_UPDATED 0x2
124 #define Set_CCB_Type(x, type) \
125 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \
126 x->ccb_h.ccb_pflags |= type
128 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK)
133 SA_FLAG_OPEN = 0x0001,
134 SA_FLAG_FIXED = 0x0002,
135 SA_FLAG_TAPE_LOCKED = 0x0004,
136 SA_FLAG_TAPE_MOUNTED = 0x0008,
137 SA_FLAG_TAPE_WP = 0x0010,
138 SA_FLAG_TAPE_WRITTEN = 0x0020,
139 SA_FLAG_EOM_PENDING = 0x0040,
140 SA_FLAG_EIO_PENDING = 0x0080,
141 SA_FLAG_EOF_PENDING = 0x0100,
142 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
143 SA_FLAG_EOF_PENDING),
144 SA_FLAG_INVALID = 0x0200,
145 SA_FLAG_COMP_ENABLED = 0x0400,
146 SA_FLAG_COMP_SUPP = 0x0800,
147 SA_FLAG_COMP_UNSUPP = 0x1000,
148 SA_FLAG_TAPE_FROZEN = 0x2000
152 SA_MODE_REWIND = 0x00,
153 SA_MODE_NOREWIND = 0x01,
154 SA_MODE_OFFLINE = 0x02
158 SA_PARAM_NONE = 0x00,
159 SA_PARAM_BLOCKSIZE = 0x01,
160 SA_PARAM_DENSITY = 0x02,
161 SA_PARAM_COMPRESSION = 0x04,
162 SA_PARAM_BUFF_MODE = 0x08,
163 SA_PARAM_NUMBLOCKS = 0x10,
165 SA_PARAM_SPEED = 0x40,
170 SA_QUIRK_NONE = 0x00,
171 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */
172 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */
173 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */
174 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */
175 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */
176 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */
177 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */
178 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */
181 /* units are bits 4-7, 16-21 (1024 units) */
182 #define SAUNIT(DEV) \
183 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16))
185 #define SAMODE(z) ((minor(z) & 0x3))
186 #define SADENSITY(z) (((minor(z) >> 2) & 0x3))
187 #define SA_IS_CTRL(z) (minor(z) & (1 << 29))
189 #define SA_NOT_CTLDEV 0
193 #define SA_ATYPE_NR 1
194 #define SA_ATYPE_ER 2
196 #define SAMINOR(ctl, unit, mode, access) \
197 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \
198 (mode << 0x2) | (access & 0x3))
200 #define SA_UNITMASK SAMINOR(0, -1, 0, 0)
201 #define SA_UNIT(unit) SAMINOR(0, unit, 0, 0)
203 #define SA_NUM_MODES 4
209 struct bio_queue_head bio_queue;
211 struct devstat device_stats;
217 u_int32_t comp_algorithm;
218 u_int32_t saved_comp_algorithm;
219 u_int32_t media_blksize;
220 u_int32_t last_media_blksize;
221 u_int32_t media_numblks;
222 u_int8_t media_density;
225 u_int8_t dsreg; /* mtio mt_dsreg, redux */
229 int last_resid_was_io;
232 * Relative to BOT Location.
241 struct scsi_sense_data _last_io_sense;
242 u_int32_t _last_io_resid;
243 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
244 struct scsi_sense_data _last_ctl_sense;
245 u_int32_t _last_ctl_resid;
246 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
247 #define last_io_sense errinfo._last_io_sense
248 #define last_io_resid errinfo._last_io_resid
249 #define last_io_cdb errinfo._last_io_cdb
250 #define last_ctl_sense errinfo._last_ctl_sense
251 #define last_ctl_resid errinfo._last_ctl_resid
252 #define last_ctl_cdb errinfo._last_ctl_cdb
255 * Misc other flags/state
259 open_rdonly : 1, /* open read-only */
260 open_pending_mount : 1, /* open pending mount */
261 ctrl_mode : 1; /* control device open */
264 struct sa_quirk_entry {
265 struct scsi_inquiry_pattern inq_pat; /* matching pattern */
266 sa_quirks quirks; /* specific quirk type */
267 u_int32_t prefblk; /* preferred blocksize when in fixed mode */
270 static struct sa_quirk_entry sa_quirk_table[] =
273 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream",
274 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD |
275 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768
278 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
279 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0
282 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
283 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0
286 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
287 "Python*", "*"}, SA_QUIRK_NODREAD, 0
290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
291 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
294 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
295 "VIPER 2525 25462", "-011"},
296 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0
299 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
300 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
304 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
305 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0,
309 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
310 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
313 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
314 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
317 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
318 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
321 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
322 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
325 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
326 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
329 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
330 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
332 { /* jreynold@primenet.com */
333 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
334 "STT8000N*", "*"}, SA_QUIRK_1FM, 0
336 { /* mike@sentex.net */
337 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
338 "STT20000*", "*"}, SA_QUIRK_1FM, 0
341 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
342 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
345 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
346 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
349 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
350 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
353 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
354 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
357 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
358 " SLR*", "*"}, SA_QUIRK_1FM, 0
361 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
362 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
365 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
366 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
370 static d_open_t saopen;
371 static d_close_t saclose;
372 static d_strategy_t sastrategy;
373 static d_ioctl_t saioctl;
374 static periph_init_t sainit;
375 static periph_ctor_t saregister;
376 static periph_oninv_t saoninvalidate;
377 static periph_dtor_t sacleanup;
378 static periph_start_t sastart;
379 static void saasync(void *callback_arg, u_int32_t code,
380 struct cam_path *path, void *arg);
381 static void sadone(struct cam_periph *periph,
382 union ccb *start_ccb);
383 static int saerror(union ccb *ccb, u_int32_t cam_flags,
384 u_int32_t sense_flags);
385 static int samarkswanted(struct cam_periph *);
386 static int sacheckeod(struct cam_periph *periph);
387 static int sagetparams(struct cam_periph *periph,
388 sa_params params_to_get,
389 u_int32_t *blocksize, u_int8_t *density,
390 u_int32_t *numblocks, int *buff_mode,
391 u_int8_t *write_protect, u_int8_t *speed,
392 int *comp_supported, int *comp_enabled,
393 u_int32_t *comp_algorithm,
394 sa_comp_t *comp_page);
395 static int sasetparams(struct cam_periph *periph,
396 sa_params params_to_set,
397 u_int32_t blocksize, u_int8_t density,
398 u_int32_t comp_algorithm,
399 u_int32_t sense_flags);
400 static void saprevent(struct cam_periph *periph, int action);
401 static int sarewind(struct cam_periph *periph);
402 static int saspace(struct cam_periph *periph, int count,
403 scsi_space_code code);
404 static int samount(struct cam_periph *, int, cdev_t);
405 static int saretension(struct cam_periph *periph);
406 static int sareservereleaseunit(struct cam_periph *periph,
408 static int saloadunload(struct cam_periph *periph, int load);
409 static int saerase(struct cam_periph *periph, int longerase);
410 static int sawritefilemarks(struct cam_periph *periph,
411 int nmarks, int setmarks);
412 static int sardpos(struct cam_periph *periph, int, u_int32_t *);
413 static int sasetpos(struct cam_periph *periph, int, u_int32_t *);
416 static struct periph_driver sadriver =
419 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
422 PERIPHDRIVER_DECLARE(sa, sadriver);
424 /* For 2.2-stable support */
429 static struct dev_ops sa_ops = {
434 .d_write = physwrite,
436 .d_strategy = sastrategy,
439 static struct extend_array *saperiphs;
442 saopen(struct dev_open_args *ap)
444 cdev_t dev = ap->a_head.a_dev;
445 struct cam_periph *periph;
446 struct sa_softc *softc;
452 periph = cam_extend_get(saperiphs, unit);
453 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
457 cam_periph_lock(periph);
459 softc = (struct sa_softc *)periph->softc;
461 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
462 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
464 if (SA_IS_CTRL(dev)) {
465 softc->ctrl_mode = 1;
466 cam_periph_unlock(periph);
470 if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
471 cam_periph_unlock(periph);
472 cam_periph_release(periph);
476 if (softc->flags & SA_FLAG_OPEN) {
478 } else if (softc->flags & SA_FLAG_INVALID) {
482 * Preserve whether this is a read_only open.
484 softc->open_rdonly = (ap->a_oflags & O_RDWR) == O_RDONLY;
487 * The function samount ensures media is loaded and ready.
488 * It also does a device RESERVE if the tape isn't yet mounted.
490 * If the mount fails and this was a non-blocking open,
491 * make this a 'open_pending_mount' action.
493 error = samount(periph, ap->a_oflags, dev);
494 if (error && (ap->a_oflags & O_NONBLOCK)) {
495 softc->flags |= SA_FLAG_OPEN;
496 softc->open_pending_mount = 1;
497 cam_periph_unhold(periph, 1);
503 cam_periph_unhold(periph, 1);
504 cam_periph_release(periph);
508 saprevent(periph, PR_PREVENT);
509 softc->flags |= SA_FLAG_OPEN;
511 cam_periph_unhold(periph, 1);
516 saclose(struct dev_close_args *ap)
518 cdev_t dev = ap->a_head.a_dev;
519 struct cam_periph *periph;
520 struct sa_softc *softc;
521 int unit, mode, error, writing, tmp;
522 int closedbits = SA_FLAG_OPEN;
526 periph = cam_extend_get(saperiphs, unit);
530 cam_periph_lock(periph);
532 softc = (struct sa_softc *)periph->softc;
534 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
535 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
538 softc->open_rdonly = 0;
539 if (SA_IS_CTRL(dev)) {
540 softc->ctrl_mode = 0;
541 cam_periph_unlock(periph);
542 cam_periph_release(periph);
546 if (softc->open_pending_mount) {
547 softc->flags &= ~SA_FLAG_OPEN;
548 softc->open_pending_mount = 0;
549 cam_periph_unlock(periph);
550 cam_periph_release(periph);
554 if ((error = cam_periph_hold(periph, 0)) != 0) {
555 cam_periph_unlock(periph);
560 * Were we writing the tape?
562 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0;
565 * See whether or not we need to write filemarks. If this
566 * fails, we probably have to assume we've lost tape
569 error = sacheckeod(periph);
571 xpt_print(periph->path,
572 "failed to write terminating filemark(s)\n");
573 softc->flags |= SA_FLAG_TAPE_FROZEN;
577 * Whatever we end up doing, allow users to eject tapes from here on.
579 saprevent(periph, PR_ALLOW);
582 * Decide how to end...
584 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
585 closedbits |= SA_FLAG_TAPE_FROZEN;
586 } else switch (mode) {
587 case SA_MODE_OFFLINE:
589 * An 'offline' close is an unconditional release of
590 * frozen && mount conditions, irrespective of whether
591 * these operations succeeded. The reason for this is
592 * to allow at least some kind of programmatic way
593 * around our state getting all fouled up. If somebody
594 * issues an 'offline' command, that will be allowed
598 saloadunload(periph, FALSE);
599 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN;
603 * If the rewind fails, return an error- if anyone cares,
604 * but not overwriting any previous error.
606 * We don't clear the notion of mounted here, but we do
607 * clear the notion of frozen if we successfully rewound.
609 tmp = sarewind(periph);
614 closedbits |= SA_FLAG_TAPE_FROZEN;
617 case SA_MODE_NOREWIND:
619 * If we're not rewinding/unloading the tape, find out
620 * whether we need to back up over one of two filemarks
621 * we wrote (if we wrote two filemarks) so that appends
622 * from this point on will be sane.
624 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) {
625 tmp = saspace(periph, -1, SS_FILEMARKS);
627 xpt_print(periph->path, "unable to backspace "
628 "over one of double filemarks at end of "
630 xpt_print(periph->path, "it is possible that "
631 "this device needs a SA_QUIRK_1FM quirk set"
633 softc->flags |= SA_FLAG_TAPE_FROZEN;
638 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode);
644 * We wish to note here that there are no more filemarks to be written.
646 softc->filemarks = 0;
647 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
650 * And we are no longer open for business.
652 softc->flags &= ~closedbits;
655 * Inform users if tape state if frozen....
657 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
658 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, "
659 "REWIND or MTEOM command to clear this state.\n");
662 /* release the device if it is no longer mounted */
663 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0)
664 sareservereleaseunit(periph, FALSE);
666 cam_periph_unhold(periph, 1);
667 cam_periph_release(periph);
673 * Actually translate the requested transfer into one the physical driver
674 * can understand. The transfer is described by a buf and will include
675 * only one physical transfer.
678 sastrategy(struct dev_strategy_args *ap)
680 cdev_t dev = ap->a_head.a_dev;
681 struct bio *bio = ap->a_bio;
682 struct buf *bp = bio->bio_buf;
683 struct cam_periph *periph;
684 struct sa_softc *softc;
687 if (SA_IS_CTRL(dev)) {
688 bp->b_error = EINVAL;
692 periph = cam_extend_get(saperiphs, unit);
693 if (periph == NULL) {
697 cam_periph_lock(periph);
699 softc = (struct sa_softc *)periph->softc;
701 if (softc->flags & SA_FLAG_INVALID) {
702 cam_periph_unlock(periph);
707 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
708 cam_periph_unlock(periph);
714 * This should actually never occur as the write(2)
715 * system call traps attempts to write to a read-only
718 if (bp->b_cmd == BUF_CMD_WRITE && softc->open_rdonly) {
719 cam_periph_unlock(periph);
724 if (softc->open_pending_mount) {
725 int error = samount(periph, 0, dev);
727 cam_periph_unlock(periph);
731 saprevent(periph, PR_PREVENT);
732 softc->open_pending_mount = 0;
736 * If it's a null transfer, return immediately
738 if (bp->b_bcount == 0) {
739 cam_periph_unlock(periph);
744 if (softc->flags & SA_FLAG_FIXED) {
746 * Fixed block device. The byte count must
747 * be a multiple of our block size.
749 if (((softc->blk_mask != ~0) &&
750 ((bp->b_bcount & softc->blk_mask) != 0)) ||
751 ((softc->blk_mask == ~0) &&
752 ((bp->b_bcount % softc->min_blk) != 0))) {
753 xpt_print(periph->path, "Invalid request. Fixed block "
754 "device requests must be a multiple of %d bytes\n",
756 cam_periph_unlock(periph);
757 bp->b_error = EINVAL;
760 } else if ((bp->b_bcount > softc->max_blk) ||
761 (bp->b_bcount < softc->min_blk) ||
762 (bp->b_bcount & softc->blk_mask) != 0) {
764 xpt_print_path(periph->path);
765 kprintf("Invalid request. Variable block "
766 "device requests must be ");
767 if (softc->blk_mask != 0) {
768 kprintf("a multiple of %d ", (0x1 << softc->blk_gran));
770 kprintf("between %d and %d bytes\n", softc->min_blk,
772 cam_periph_unlock(periph);
773 bp->b_error = EINVAL;
778 * Place it at the end of the queue.
780 bioq_insert_tail(&softc->bio_queue, bio);
781 softc->queue_count++;
783 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
784 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount,
785 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
786 (bp->bio_cmd == BIO_READ)? "read" : "write"));
788 if (softc->queue_count > 1) {
789 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
790 ("sastrategy: queue count now %d\n", softc->queue_count));
794 * Schedule ourselves for performing the work.
796 xpt_schedule(periph, 1);
797 cam_periph_unlock(periph);
801 bp->b_flags |= B_ERROR;
805 * Correctly set the buf to indicate a completed xfer
807 bp->b_resid = bp->b_bcount;
813 #define PENDING_MOUNT_CHECK(softc, periph, dev) \
814 if (softc->open_pending_mount) { \
815 error = samount(periph, 0, dev); \
819 saprevent(periph, PR_PREVENT); \
820 softc->open_pending_mount = 0; \
824 saioctl(struct dev_ioctl_args *ap)
826 cdev_t dev = ap->a_head.a_dev;
827 caddr_t addr = ap->a_data;
828 struct cam_periph *periph;
829 struct sa_softc *softc;
830 scsi_space_code spaceop;
831 int didholdperiph = 0;
838 error = 0; /* shut up gcc */
839 spaceop = 0; /* shut up gcc */
841 periph = cam_extend_get(saperiphs, unit);
845 cam_periph_lock(periph);
846 softc = (struct sa_softc *)periph->softc;
849 * Check for control mode accesses. We allow MTIOCGET and
850 * MTIOCERRSTAT (but need to be the only one open in order
851 * to clear latched status), and MTSETBSIZE, MTSETDNSTY
852 * and MTCOMP (but need to be the only one accessing this
853 * device to run those).
856 if (SA_IS_CTRL(dev)) {
858 case MTIOCGETEOTMODEL:
863 * If the periph isn't already locked, lock it
864 * so our MTIOCERRSTAT can reset latched error stats.
866 * If the periph is already locked, skip it because
867 * we're just getting status and it'll be up to the
868 * other thread that has this device open to do
869 * an MTIOCERRSTAT that would clear latched status.
871 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
872 error = cam_periph_hold(periph, PCATCH);
882 struct mtop *mt = (struct mtop *) addr;
885 * Check to make sure it's an OP we can perform
886 * with no media inserted.
902 case MTIOCSETEOTMODEL:
904 * We need to acquire the peripheral here rather
905 * than at open time because we are sharing writable
906 * access to data structures.
908 error = cam_periph_hold(periph, PCATCH);
921 * Find the device that the user is talking about
926 struct mtget *g = (struct mtget *)addr;
929 * If this isn't the control mode device, actually go out
930 * and ask the drive again what it's set to.
932 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) {
933 u_int8_t write_protect = 0; /* silence gcc */
934 int comp_enabled = 0; /* silence gcc */
935 int comp_supported = 0; /* silence gcc */
937 error = sagetparams(periph, SA_PARAM_ALL,
938 &softc->media_blksize, &softc->media_density,
939 &softc->media_numblks, &softc->buffer_mode,
940 &write_protect, &softc->speed, &comp_supported,
941 &comp_enabled, &softc->comp_algorithm, NULL);
945 softc->flags |= SA_FLAG_TAPE_WP;
947 softc->flags &= ~SA_FLAG_TAPE_WP;
948 softc->flags &= ~(SA_FLAG_COMP_SUPP|
949 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP);
950 if (comp_supported) {
951 if (softc->saved_comp_algorithm == 0)
952 softc->saved_comp_algorithm =
953 softc->comp_algorithm;
954 softc->flags |= SA_FLAG_COMP_SUPP;
956 softc->flags |= SA_FLAG_COMP_ENABLED;
958 softc->flags |= SA_FLAG_COMP_UNSUPP;
960 bzero(g, sizeof(struct mtget));
961 g->mt_type = MT_ISAR;
962 if (softc->flags & SA_FLAG_COMP_UNSUPP) {
963 g->mt_comp = MT_COMP_UNSUPP;
964 g->mt_comp0 = MT_COMP_UNSUPP;
965 g->mt_comp1 = MT_COMP_UNSUPP;
966 g->mt_comp2 = MT_COMP_UNSUPP;
967 g->mt_comp3 = MT_COMP_UNSUPP;
969 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
970 g->mt_comp = MT_COMP_DISABLED;
972 g->mt_comp = softc->comp_algorithm;
974 g->mt_comp0 = softc->comp_algorithm;
975 g->mt_comp1 = softc->comp_algorithm;
976 g->mt_comp2 = softc->comp_algorithm;
977 g->mt_comp3 = softc->comp_algorithm;
979 g->mt_density = softc->media_density;
980 g->mt_density0 = softc->media_density;
981 g->mt_density1 = softc->media_density;
982 g->mt_density2 = softc->media_density;
983 g->mt_density3 = softc->media_density;
984 g->mt_blksiz = softc->media_blksize;
985 g->mt_blksiz0 = softc->media_blksize;
986 g->mt_blksiz1 = softc->media_blksize;
987 g->mt_blksiz2 = softc->media_blksize;
988 g->mt_blksiz3 = softc->media_blksize;
989 g->mt_fileno = softc->fileno;
990 g->mt_blkno = softc->blkno;
991 g->mt_dsreg = (short) softc->dsreg;
993 * Yes, we know that this is likely to overflow
995 if (softc->last_resid_was_io) {
996 if ((g->mt_resid = (short) softc->last_io_resid) != 0) {
997 if (SA_IS_CTRL(dev) == 0 || didholdperiph) {
998 softc->last_io_resid = 0;
1002 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) {
1003 if (SA_IS_CTRL(dev) == 0 || didholdperiph) {
1004 softc->last_ctl_resid = 0;
1013 struct scsi_tape_errors *sep =
1014 &((union mterrstat *)addr)->scsi_errstat;
1016 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1017 ("saioctl: MTIOCERRSTAT\n"));
1019 bzero(sep, sizeof(*sep));
1020 sep->io_resid = softc->last_io_resid;
1021 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
1022 sizeof (sep->io_sense));
1023 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
1024 sizeof (sep->io_cdb));
1025 sep->ctl_resid = softc->last_ctl_resid;
1026 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
1027 sizeof (sep->ctl_sense));
1028 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
1029 sizeof (sep->ctl_cdb));
1031 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) ||
1033 bzero((caddr_t) &softc->errinfo,
1034 sizeof (softc->errinfo));
1043 PENDING_MOUNT_CHECK(softc, periph, dev);
1045 mt = (struct mtop *)addr;
1047 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1048 ("saioctl: op=0x%x count=0x%x\n",
1049 mt->mt_op, mt->mt_count));
1051 count = mt->mt_count;
1052 switch (mt->mt_op) {
1053 case MTWEOF: /* write an end-of-file marker */
1055 * We don't need to clear the SA_FLAG_TAPE_WRITTEN
1056 * flag because by keeping track of filemarks
1057 * we have last written we know ehether or not
1058 * we need to write more when we close the device.
1060 error = sawritefilemarks(periph, count, FALSE);
1062 case MTWSS: /* write a setmark */
1063 error = sawritefilemarks(periph, count, TRUE);
1065 case MTBSR: /* backward space record */
1066 case MTFSR: /* forward space record */
1067 case MTBSF: /* backward space file */
1068 case MTFSF: /* forward space file */
1069 case MTBSS: /* backward space setmark */
1070 case MTFSS: /* forward space setmark */
1071 case MTEOD: /* space to end of recorded medium */
1075 spaceop = SS_FILEMARKS;
1076 nmarks = softc->filemarks;
1077 error = sacheckeod(periph);
1079 xpt_print(periph->path,
1080 "EOD check prior to spacing failed\n");
1081 softc->flags |= SA_FLAG_EIO_PENDING;
1084 nmarks -= softc->filemarks;
1090 spaceop = SS_BLOCKS;
1101 spaceop = SS_SETMARKS;
1115 nmarks = softc->filemarks;
1117 * XXX: Why are we checking again?
1119 error = sacheckeod(periph);
1122 nmarks -= softc->filemarks;
1123 error = saspace(periph, count - nmarks, spaceop);
1125 * At this point, clear that we've written the tape
1126 * and that we've written any filemarks. We really
1127 * don't know what the applications wishes to do next-
1128 * the sacheckeod's will make sure we terminated the
1129 * tape correctly if we'd been writing, but the next
1130 * action the user application takes will set again
1131 * whether we need to write filemarks.
1134 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1135 softc->filemarks = 0;
1138 case MTREW: /* rewind */
1139 PENDING_MOUNT_CHECK(softc, periph, dev);
1141 error = sarewind(periph);
1144 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1145 softc->flags &= ~SA_FLAG_ERR_PENDING;
1146 softc->filemarks = 0;
1148 case MTERASE: /* erase */
1149 PENDING_MOUNT_CHECK(softc, periph, dev);
1150 error = saerase(periph, count);
1152 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1153 softc->flags &= ~SA_FLAG_ERR_PENDING;
1155 case MTRETENS: /* re-tension tape */
1156 PENDING_MOUNT_CHECK(softc, periph, dev);
1157 error = saretension(periph);
1159 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1160 softc->flags &= ~SA_FLAG_ERR_PENDING;
1162 case MTOFFL: /* rewind and put the drive offline */
1164 PENDING_MOUNT_CHECK(softc, periph, dev);
1168 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
1169 softc->filemarks = 0;
1171 error = sarewind(periph);
1172 /* clear the frozen flag anyway */
1173 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1176 * Be sure to allow media removal before ejecting.
1179 saprevent(periph, PR_ALLOW);
1181 error = saloadunload(periph, FALSE);
1183 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1188 case MTNOP: /* no operation, sets status only */
1189 case MTCACHE: /* enable controller cache */
1190 case MTNOCACHE: /* disable controller cache */
1194 case MTSETBSIZ: /* Set block size for device */
1196 PENDING_MOUNT_CHECK(softc, periph, dev);
1198 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count,
1201 softc->last_media_blksize =
1202 softc->media_blksize;
1203 softc->media_blksize = count;
1205 softc->flags |= SA_FLAG_FIXED;
1206 if (powerof2(count)) {
1209 softc->blk_mask = count - 1;
1211 softc->blk_mask = ~0;
1212 softc->blk_shift = 0;
1215 * Make the user's desire 'persistent'.
1217 softc->quirks &= ~SA_QUIRK_VARIABLE;
1218 softc->quirks |= SA_QUIRK_FIXED;
1220 softc->flags &= ~SA_FLAG_FIXED;
1221 if (softc->max_blk == 0) {
1222 softc->max_blk = ~0;
1224 softc->blk_shift = 0;
1225 if (softc->blk_gran != 0) {
1227 softc->blk_gran - 1;
1229 softc->blk_mask = 0;
1232 * Make the user's desire 'persistent'.
1234 softc->quirks |= SA_QUIRK_VARIABLE;
1235 softc->quirks &= ~SA_QUIRK_FIXED;
1239 case MTSETDNSTY: /* Set density for device and mode */
1240 PENDING_MOUNT_CHECK(softc, periph, dev);
1242 if (count > UCHAR_MAX) {
1246 error = sasetparams(periph, SA_PARAM_DENSITY,
1250 case MTCOMP: /* enable compression */
1251 PENDING_MOUNT_CHECK(softc, periph, dev);
1253 * Some devices don't support compression, and
1254 * don't like it if you ask them for the
1257 if ((softc->quirks & SA_QUIRK_NOCOMP) ||
1258 (softc->flags & SA_FLAG_COMP_UNSUPP)) {
1262 error = sasetparams(periph, SA_PARAM_COMPRESSION,
1263 0, 0, count, SF_NO_PRINT);
1275 PENDING_MOUNT_CHECK(softc, periph, dev);
1276 error = sardpos(periph, 0, (u_int32_t *) addr);
1279 PENDING_MOUNT_CHECK(softc, periph, dev);
1280 error = sardpos(periph, 1, (u_int32_t *) addr);
1283 PENDING_MOUNT_CHECK(softc, periph, dev);
1284 error = sasetpos(periph, 0, (u_int32_t *) addr);
1287 PENDING_MOUNT_CHECK(softc, periph, dev);
1288 error = sasetpos(periph, 1, (u_int32_t *) addr);
1290 case MTIOCGETEOTMODEL:
1292 if (softc->quirks & SA_QUIRK_1FM)
1296 *((u_int32_t *) addr) = mode;
1298 case MTIOCSETEOTMODEL:
1300 switch (*((u_int32_t *) addr)) {
1302 softc->quirks &= ~SA_QUIRK_2FM;
1303 softc->quirks |= SA_QUIRK_1FM;
1306 softc->quirks &= ~SA_QUIRK_1FM;
1307 softc->quirks |= SA_QUIRK_2FM;
1315 error = cam_periph_ioctl(periph, ap->a_cmd, addr, saerror);
1320 * Check to see if we cleared a frozen state
1322 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) {
1328 softc->fileno = (daddr_t) -1;
1329 softc->blkno = (daddr_t) -1;
1330 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1331 xpt_print(periph->path,
1332 "tape state now unfrozen.\n");
1339 cam_periph_unhold(periph, 1);
1341 cam_periph_unlock(periph);
1351 * Create our extend array for storing the devices we attach to.
1353 saperiphs = cam_extend_new();
1354 if (saperiphs == NULL) {
1355 kprintf("sa: Failed to alloc extend array!\n");
1360 * Install a global async callback.
1362 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL);
1364 if (status != CAM_REQ_CMP) {
1365 kprintf("sa: Failed to attach master async callback "
1366 "due to status 0x%x!\n", status);
1371 saoninvalidate(struct cam_periph *periph)
1373 struct sa_softc *softc;
1377 softc = (struct sa_softc *)periph->softc;
1380 * De-register any async callbacks.
1382 xpt_register_async(0, saasync, periph, periph->path);
1384 softc->flags |= SA_FLAG_INVALID;
1387 * Return all queued I/O with ENXIO.
1388 * XXX Handle any transactions queued to the card
1389 * with XPT_ABORT_CCB.
1391 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1392 bioq_remove(&softc->bio_queue, q_bio);
1393 q_bp = q_bio->bio_buf;
1394 q_bp->b_resid = q_bp->b_bcount;
1395 q_bp->b_error = ENXIO;
1396 q_bp->b_flags |= B_ERROR;
1399 softc->queue_count = 0;
1401 xpt_print(periph->path, "lost device\n");
1406 sacleanup(struct cam_periph *periph)
1408 struct sa_softc *softc;
1410 softc = (struct sa_softc *)periph->softc;
1412 devstat_remove_entry(&softc->device_stats);
1414 cam_extend_release(saperiphs, periph->unit_number);
1415 xpt_print(periph->path, "removing device entry\n");
1416 dev_ops_remove_minor(&sa_ops, /*SA_UNITMASK,*/ SA_UNIT(periph->unit_number));
1417 kfree(softc, M_SCSISA);
1421 saasync(void *callback_arg, u_int32_t code,
1422 struct cam_path *path, void *arg)
1424 struct cam_periph *periph;
1426 periph = (struct cam_periph *)callback_arg;
1428 case AC_FOUND_DEVICE:
1430 struct ccb_getdev *cgd;
1433 cgd = (struct ccb_getdev *)arg;
1437 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
1441 * Allocate a peripheral instance for
1442 * this device and start the probe
1445 status = cam_periph_alloc(saregister, saoninvalidate,
1447 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
1448 saasync, AC_FOUND_DEVICE, cgd);
1450 if (status != CAM_REQ_CMP
1451 && status != CAM_REQ_INPROG)
1452 kprintf("saasync: Unable to probe new device "
1453 "due to status 0x%x\n", status);
1457 cam_periph_async(periph, code, path, arg);
1463 saregister(struct cam_periph *periph, void *arg)
1465 struct sa_softc *softc;
1466 struct ccb_getdev *cgd;
1470 cgd = (struct ccb_getdev *)arg;
1471 if (periph == NULL) {
1472 kprintf("saregister: periph was NULL!!\n");
1473 return (CAM_REQ_CMP_ERR);
1477 kprintf("saregister: no getdev CCB, can't register device\n");
1478 return (CAM_REQ_CMP_ERR);
1481 softc = kmalloc(sizeof (*softc), M_SCSISA, M_INTWAIT | M_ZERO);
1482 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
1483 softc->state = SA_STATE_NORMAL;
1484 softc->fileno = (daddr_t) -1;
1485 softc->blkno = (daddr_t) -1;
1487 bioq_init(&softc->bio_queue);
1488 periph->softc = softc;
1489 cam_extend_set(saperiphs, periph->unit_number, periph);
1492 * See if this device has any quirks.
1494 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1495 (caddr_t)sa_quirk_table,
1496 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
1497 sizeof(*sa_quirk_table), scsi_inquiry_match);
1499 if (match != NULL) {
1500 softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
1501 softc->last_media_blksize =
1502 ((struct sa_quirk_entry *)match)->prefblk;
1504 xpt_print(periph->path, "found quirk entry %d\n",
1505 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table));
1508 softc->quirks = SA_QUIRK_NONE;
1511 * The SA driver supports a blocksize, but we don't know the
1512 * blocksize until we media is inserted. So, set a flag to
1513 * indicate that the blocksize is unavailable right now.
1515 cam_periph_unlock(periph);
1516 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0,
1517 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
1518 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE);
1520 make_dev(&sa_ops, SAMINOR(SA_CTLDEV,
1521 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1522 0660, "%s%d.ctl", periph->periph_name, periph->unit_number);
1524 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV,
1525 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1526 0660, "%s%d", periph->periph_name, periph->unit_number);
1528 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV,
1529 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR,
1530 0660, "n%s%d", periph->periph_name, periph->unit_number);
1532 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV,
1533 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR,
1534 0660, "e%s%d", periph->periph_name, periph->unit_number);
1536 for (i = 0; i < SA_NUM_MODES; i++) {
1539 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R),
1540 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d",
1541 periph->periph_name, periph->unit_number, i);
1544 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR),
1545 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d",
1546 periph->periph_name, periph->unit_number, i);
1550 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER),
1551 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d",
1552 periph->periph_name, periph->unit_number, i);
1554 cam_periph_lock(periph);
1557 * Add an async callback so that we get
1558 * notified if this device goes away.
1560 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path);
1562 xpt_announce_periph(periph, NULL);
1564 return (CAM_REQ_CMP);
1568 sastart(struct cam_periph *periph, union ccb *start_ccb)
1570 struct sa_softc *softc;
1572 softc = (struct sa_softc *)periph->softc;
1574 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n"));
1577 switch (softc->state) {
1578 case SA_STATE_NORMAL:
1580 /* Pull a buffer from the queue and get going on it */
1585 * See if there is a buf with work for us to do..
1587 bio = bioq_first(&softc->bio_queue);
1588 if (periph->immediate_priority <= periph->pinfo.priority) {
1589 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1590 ("queuing for immediate ccb\n"));
1591 Set_CCB_Type(start_ccb, SA_CCB_WAITING);
1592 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1594 periph->immediate_priority = CAM_PRIORITY_NONE;
1595 wakeup(&periph->ccb_list);
1596 } else if (bio == NULL) {
1597 xpt_release_ccb(start_ccb);
1598 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) {
1599 struct bio *done_bio;
1601 softc->queue_count--;
1602 bioq_remove(&softc->bio_queue, bio);
1604 bp->b_resid = bp->b_bcount;
1606 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
1608 * We now just clear errors in this case
1609 * and let the residual be the notifier.
1612 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
1614 * This can only happen if we're reading
1615 * in fixed length mode. In this case,
1616 * we dump the rest of the list the
1620 if (bioq_first(&softc->bio_queue) != NULL) {
1624 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
1626 bp->b_flags |= B_ERROR;
1628 bio = bioq_first(&softc->bio_queue);
1630 * Only if we have no other buffers queued up
1631 * do we clear the pending error flag.
1634 softc->flags &= ~SA_FLAG_ERR_PENDING;
1635 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1636 ("sastart- ERR_PENDING now 0x%x, bio is %sNULL, "
1637 "%d more buffers queued up\n",
1638 (softc->flags & SA_FLAG_ERR_PENDING),
1639 (bio != NULL)? "not " : " ", softc->queue_count));
1640 xpt_release_ccb(start_ccb);
1645 bioq_remove(&softc->bio_queue, bio);
1647 softc->queue_count--;
1649 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1650 if (softc->blk_shift != 0) {
1652 bp->b_bcount >> softc->blk_shift;
1653 } else if (softc->media_blksize != 0) {
1655 bp->b_bcount / softc->media_blksize;
1658 xpt_print(periph->path, "zero blocksize"
1659 " for FIXED length writes?\n");
1664 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1665 ("issuing a %d fixed record %s\n",
1666 length, (bp->bio_cmd == BIO_READ)? "read" :
1670 length = bp->b_bcount;
1672 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1673 ("issuing a %d variable byte %s\n",
1674 length, (bp->bio_cmd == BIO_READ)? "read" :
1678 devstat_start_transaction(&softc->device_stats);
1680 * Some people have theorized that we should
1681 * suppress illegal length indication if we are
1682 * running in variable block mode so that we don't
1683 * have to request sense every time our requested
1684 * block size is larger than the written block.
1685 * The residual information from the ccb allows
1686 * us to identify this situation anyway. The only
1687 * problem with this is that we will not get
1688 * information about blocks that are larger than
1689 * our read buffer unless we set the block size
1690 * in the mode page to something other than 0.
1692 * I believe that this is a non-issue. If user apps
1693 * don't adjust their read size to match our record
1694 * size, that's just life. Anyway, the typical usage
1695 * would be to issue, e.g., 64KB reads and occasionally
1696 * have to do deal with 512 byte or 1KB intermediate
1699 softc->dsreg = (bp->b_cmd == BUF_CMD_READ) ?
1700 MTIO_DSREG_RD : MTIO_DSREG_WR;
1701 scsi_sa_read_write(&start_ccb->csio, 0, sadone,
1702 MSG_SIMPLE_Q_TAG, (bp->b_cmd == BUF_CMD_READ) != 0,
1703 FALSE, (softc->flags & SA_FLAG_FIXED) != 0,
1704 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE,
1706 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
1707 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO);
1708 start_ccb->ccb_h.ccb_bio = bio;
1709 bio = bioq_first(&softc->bio_queue);
1710 xpt_action(start_ccb);
1714 /* Have more work to do, so ensure we stay scheduled */
1715 xpt_schedule(periph, 1);
1719 case SA_STATE_ABNORMAL:
1721 panic("state 0x%x in sastart", softc->state);
1728 sadone(struct cam_periph *periph, union ccb *done_ccb)
1730 struct sa_softc *softc;
1731 struct ccb_scsiio *csio;
1733 softc = (struct sa_softc *)periph->softc;
1734 csio = &done_ccb->csio;
1735 switch (CCB_Type(csio)) {
1736 case SA_CCB_BUFFER_IO:
1742 softc->dsreg = MTIO_DSREG_REST;
1743 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1746 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1747 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
1749 * A retry was scheduled, so just return.
1760 * Catastrophic error. Mark the tape as frozen
1761 * (we no longer know tape position).
1763 * Return all queued I/O with EIO, and unfreeze
1764 * our queue so that future transactions that
1765 * attempt to fix this problem can get to the
1770 softc->flags |= SA_FLAG_TAPE_FROZEN;
1771 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL) {
1772 bioq_remove(&softc->bio_queue, q_bio);
1773 q_bp = q_bio->bio_buf;
1774 q_bp->b_resid = q_bp->b_bcount;
1775 q_bp->b_error = EIO;
1776 q_bp->b_flags |= B_ERROR;
1781 bp->b_resid = bp->b_bcount;
1782 bp->b_error = error;
1783 bp->b_flags |= B_ERROR;
1785 * In the error case, position is updated in saerror.
1788 bp->b_resid = csio->resid;
1790 if (csio->resid != 0) {
1791 bp->b_flags |= B_ERROR;
1793 if (bp->b_cmd != BUF_CMD_READ) {
1794 softc->flags |= SA_FLAG_TAPE_WRITTEN;
1795 softc->filemarks = 0;
1797 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
1798 (softc->blkno != (daddr_t) -1)) {
1799 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1801 if (softc->blk_shift != 0) {
1806 softc->media_blksize;
1808 softc->blkno += (daddr_t) l;
1815 * If we had an error (immediate or pending),
1816 * release the device queue now.
1818 if (error || (softc->flags & SA_FLAG_ERR_PENDING))
1819 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1821 if (error || bp->b_resid) {
1822 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1823 ("error %d resid %d count %d\n", error,
1824 bp->b_resid, bp->b_bcount));
1827 devstat_end_transaction_buf(&softc->device_stats, bp);
1831 case SA_CCB_WAITING:
1833 /* Caller will release the CCB */
1834 wakeup(&done_ccb->ccb_h.cbfcnp);
1838 xpt_release_ccb(done_ccb);
1842 * Mount the tape (make sure it's ready for I/O).
1845 samount(struct cam_periph *periph, int oflags, cdev_t dev)
1847 struct sa_softc *softc;
1852 * oflags can be checked for 'kind' of open (read-only check) - later
1853 * dev can be checked for a control-mode or compression open - later
1855 UNUSED_PARAMETER(oflags);
1856 UNUSED_PARAMETER(dev);
1859 softc = (struct sa_softc *)periph->softc;
1862 * This should determine if something has happend since the last
1863 * open/mount that would invalidate the mount. We do *not* want
1864 * to retry this command- we just want the status. But we only
1865 * do this if we're mounted already- if we're not mounted,
1866 * we don't care about the unit read state and can instead use
1867 * this opportunity to attempt to reserve the tape unit.
1870 if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
1871 ccb = cam_periph_getccb(periph, 1);
1872 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1873 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1874 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1875 &softc->device_stats);
1877 if (error == ENXIO) {
1878 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1879 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1880 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1881 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1882 &softc->device_stats);
1886 * We don't need to freeze the tape because we
1887 * will now attempt to rewind/load it.
1889 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1890 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
1891 xpt_print(periph->path,
1892 "error %d on TUR in samount\n", error);
1896 error = sareservereleaseunit(periph, TRUE);
1900 ccb = cam_periph_getccb(periph, 1);
1901 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1902 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1903 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1904 &softc->device_stats);
1908 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
1909 struct scsi_read_block_limits_data *rblim = NULL;
1910 int comp_enabled = 0; /* silence gcc */
1911 int comp_supported = 0; /* silence gcc */
1912 u_int8_t write_protect = 0; /* silence gcc */
1913 u_int8_t guessing = 0;
1916 * Clear out old state.
1918 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
1919 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
1920 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP);
1921 softc->filemarks = 0;
1924 * *Very* first off, make sure we're loaded to BOT.
1926 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
1927 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
1928 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1929 &softc->device_stats);
1933 * In case this doesn't work, do a REWIND instead
1936 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
1937 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1938 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1939 &softc->device_stats);
1943 xpt_release_ccb(ccb);
1948 * Do a dummy test read to force access to the
1949 * media so that the drive will really know what's
1950 * there. We actually don't really care what the
1951 * blocksize on tape is and don't expect to really
1952 * read a full record.
1954 rblim = kmalloc(8192, M_SCSISA, M_INTWAIT);
1956 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
1957 scsi_sa_read_write(&ccb->csio, 0, sadone,
1958 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
1959 (void *) rblim, 8192, SSD_FULL_SIZE,
1961 cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1962 &softc->device_stats);
1964 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
1965 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1966 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
1967 SF_NO_PRINT | SF_RETRY_UA,
1968 &softc->device_stats);
1971 xpt_print(periph->path,
1972 "unable to rewind after test read\n");
1973 xpt_release_ccb(ccb);
1979 * Next off, determine block limits.
1981 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
1982 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
1984 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
1985 SF_NO_PRINT | SF_RETRY_UA, &softc->device_stats);
1988 xpt_release_ccb(ccb);
1992 * If it's less than SCSI-2, READ BLOCK LIMITS is not
1993 * a MANDATORY command. Anyway- it doesn't matter-
1994 * we can proceed anyway.
1996 softc->blk_gran = 0;
1997 softc->max_blk = ~0;
2000 if (softc->scsi_rev >= SCSI_REV_SPC) {
2001 softc->blk_gran = RBL_GRAN(rblim);
2003 softc->blk_gran = 0;
2006 * We take max_blk == min_blk to mean a default to
2007 * fixed mode- but note that whatever we get out of
2008 * sagetparams below will actually determine whether
2009 * we are actually *in* fixed mode.
2011 softc->max_blk = scsi_3btoul(rblim->maximum);
2012 softc->min_blk = scsi_2btoul(rblim->minimum);
2017 * Next, perform a mode sense to determine
2018 * current density, blocksize, compression etc.
2020 error = sagetparams(periph, SA_PARAM_ALL,
2021 &softc->media_blksize,
2022 &softc->media_density,
2023 &softc->media_numblks,
2024 &softc->buffer_mode, &write_protect,
2025 &softc->speed, &comp_supported,
2026 &comp_enabled, &softc->comp_algorithm,
2031 * We could work a little harder here. We could
2032 * adjust our attempts to get information. It
2033 * might be an ancient tape drive. If someone
2034 * nudges us, we'll do that.
2040 * If no quirk has determined that this is a device that is
2041 * preferred to be in fixed or variable mode, now is the time
2044 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
2047 * This could be expensive to find out. Luckily we
2048 * only need to do this once. If we start out in
2049 * 'default' mode, try and set ourselves to one
2050 * of the densities that would determine a wad
2051 * of other stuff. Go from highest to lowest.
2053 if (softc->media_density == SCSI_DEFAULT_DENSITY) {
2055 static u_int8_t ctry[] = {
2056 SCSI_DENSITY_HALFINCH_PE,
2057 SCSI_DENSITY_HALFINCH_6250C,
2058 SCSI_DENSITY_HALFINCH_6250,
2059 SCSI_DENSITY_HALFINCH_1600,
2060 SCSI_DENSITY_HALFINCH_800,
2061 SCSI_DENSITY_QIC_4GB,
2062 SCSI_DENSITY_QIC_2GB,
2063 SCSI_DENSITY_QIC_525_320,
2064 SCSI_DENSITY_QIC_150,
2065 SCSI_DENSITY_QIC_120,
2066 SCSI_DENSITY_QIC_24,
2067 SCSI_DENSITY_QIC_11_9TRK,
2068 SCSI_DENSITY_QIC_11_4TRK,
2069 SCSI_DENSITY_QIC_1320,
2070 SCSI_DENSITY_QIC_3080,
2073 for (i = 0; ctry[i]; i++) {
2074 error = sasetparams(periph,
2075 SA_PARAM_DENSITY, 0, ctry[i],
2078 softc->media_density = ctry[i];
2083 switch (softc->media_density) {
2084 case SCSI_DENSITY_QIC_11_4TRK:
2085 case SCSI_DENSITY_QIC_11_9TRK:
2086 case SCSI_DENSITY_QIC_24:
2087 case SCSI_DENSITY_QIC_120:
2088 case SCSI_DENSITY_QIC_150:
2089 case SCSI_DENSITY_QIC_525_320:
2090 case SCSI_DENSITY_QIC_1320:
2091 case SCSI_DENSITY_QIC_3080:
2092 softc->quirks &= ~SA_QUIRK_2FM;
2093 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2094 softc->last_media_blksize = 512;
2096 case SCSI_DENSITY_QIC_4GB:
2097 case SCSI_DENSITY_QIC_2GB:
2098 softc->quirks &= ~SA_QUIRK_2FM;
2099 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2100 softc->last_media_blksize = 1024;
2103 softc->last_media_blksize =
2104 softc->media_blksize;
2105 softc->quirks |= SA_QUIRK_VARIABLE;
2111 * If no quirk has determined that this is a device that needs
2112 * to have 2 Filemarks at EOD, now is the time to find out.
2115 if ((softc->quirks & SA_QUIRK_2FM) == 0) {
2116 switch (softc->media_density) {
2117 case SCSI_DENSITY_HALFINCH_800:
2118 case SCSI_DENSITY_HALFINCH_1600:
2119 case SCSI_DENSITY_HALFINCH_6250:
2120 case SCSI_DENSITY_HALFINCH_6250C:
2121 case SCSI_DENSITY_HALFINCH_PE:
2122 softc->quirks &= ~SA_QUIRK_1FM;
2123 softc->quirks |= SA_QUIRK_2FM;
2131 * Now validate that some info we got makes sense.
2133 if ((softc->max_blk < softc->media_blksize) ||
2134 (softc->min_blk > softc->media_blksize &&
2135 softc->media_blksize)) {
2136 xpt_print(periph->path,
2137 "BLOCK LIMITS (%d..%d) could not match current "
2138 "block settings (%d)- adjusting\n", softc->min_blk,
2139 softc->max_blk, softc->media_blksize);
2140 softc->max_blk = softc->min_blk =
2141 softc->media_blksize;
2145 * Now put ourselves into the right frame of mind based
2150 * If we want to be in FIXED mode and our current blocksize
2151 * is not equal to our last blocksize (if nonzero), try and
2152 * set ourselves to this last blocksize (as the 'preferred'
2153 * block size). The initial quirkmatch at registry sets the
2154 * initial 'last' blocksize. If, for whatever reason, this
2155 * 'last' blocksize is zero, set the blocksize to 512,
2156 * or min_blk if that's larger.
2158 if ((softc->quirks & SA_QUIRK_FIXED) &&
2159 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
2160 (softc->media_blksize != softc->last_media_blksize)) {
2161 softc->media_blksize = softc->last_media_blksize;
2162 if (softc->media_blksize == 0) {
2163 softc->media_blksize = 512;
2164 if (softc->media_blksize < softc->min_blk) {
2165 softc->media_blksize = softc->min_blk;
2168 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2169 softc->media_blksize, 0, 0, SF_NO_PRINT);
2171 xpt_print(periph->path,
2172 "unable to set fixed blocksize to %d\n",
2173 softc->media_blksize);
2178 if ((softc->quirks & SA_QUIRK_VARIABLE) &&
2179 (softc->media_blksize != 0)) {
2180 softc->last_media_blksize = softc->media_blksize;
2181 softc->media_blksize = 0;
2182 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2183 0, 0, 0, SF_NO_PRINT);
2186 * If this fails and we were guessing, just
2187 * assume that we got it wrong and go try
2188 * fixed block mode. Don't even check against
2189 * density code at this point.
2192 softc->quirks &= ~SA_QUIRK_VARIABLE;
2193 softc->quirks |= SA_QUIRK_FIXED;
2194 if (softc->last_media_blksize == 0)
2195 softc->last_media_blksize = 512;
2198 xpt_print(periph->path,
2199 "unable to set variable blocksize\n");
2205 * Now that we have the current block size,
2206 * set up some parameters for sastart's usage.
2208 if (softc->media_blksize) {
2209 softc->flags |= SA_FLAG_FIXED;
2210 if (powerof2(softc->media_blksize)) {
2212 ffs(softc->media_blksize) - 1;
2213 softc->blk_mask = softc->media_blksize - 1;
2215 softc->blk_mask = ~0;
2216 softc->blk_shift = 0;
2220 * The SCSI-3 spec allows 0 to mean "unspecified".
2221 * The SCSI-1 spec allows 0 to mean 'infinite'.
2223 * Either works here.
2225 if (softc->max_blk == 0) {
2226 softc->max_blk = ~0;
2228 softc->blk_shift = 0;
2229 if (softc->blk_gran != 0) {
2230 softc->blk_mask = softc->blk_gran - 1;
2232 softc->blk_mask = 0;
2237 softc->flags |= SA_FLAG_TAPE_WP;
2239 if (comp_supported) {
2240 if (softc->saved_comp_algorithm == 0)
2241 softc->saved_comp_algorithm =
2242 softc->comp_algorithm;
2243 softc->flags |= SA_FLAG_COMP_SUPP;
2245 softc->flags |= SA_FLAG_COMP_ENABLED;
2247 softc->flags |= SA_FLAG_COMP_UNSUPP;
2249 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
2250 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
2251 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
2254 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
2256 xpt_print(periph->path,
2257 "unable to set buffered mode\n");
2259 error = 0; /* not an error */
2264 softc->flags |= SA_FLAG_TAPE_MOUNTED;
2268 kfree(rblim, M_SCSISA);
2271 softc->dsreg = MTIO_DSREG_NIL;
2273 softc->fileno = softc->blkno = 0;
2274 softc->dsreg = MTIO_DSREG_REST;
2276 #ifdef SA_1FM_AT_EOD
2277 if ((softc->quirks & SA_QUIRK_2FM) == 0)
2278 softc->quirks |= SA_QUIRK_1FM;
2280 if ((softc->quirks & SA_QUIRK_1FM) == 0)
2281 softc->quirks |= SA_QUIRK_2FM;
2284 xpt_release_ccb(ccb);
2287 * If we return an error, we're not mounted any more,
2288 * so release any device reservation.
2291 sareservereleaseunit(periph, FALSE);
2294 * Clear I/O residual.
2296 softc->last_io_resid = 0;
2297 softc->last_ctl_resid = 0;
2303 * How many filemarks do we need to write if we were to terminate the
2304 * tape session right now? Note that this can be a negative number
2308 samarkswanted(struct cam_periph *periph)
2311 struct sa_softc *softc;
2313 softc = (struct sa_softc *)periph->softc;
2315 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
2317 if (softc->quirks & SA_QUIRK_2FM)
2320 markswanted -= softc->filemarks;
2321 return (markswanted);
2325 sacheckeod(struct cam_periph *periph)
2330 markswanted = samarkswanted(periph);
2332 if (markswanted > 0) {
2333 error = sawritefilemarks(periph, markswanted, FALSE);
2341 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
2343 static const char *toobig =
2344 "%d-byte tape record bigger than supplied buffer\n";
2345 struct cam_periph *periph;
2346 struct sa_softc *softc;
2347 struct ccb_scsiio *csio;
2348 struct scsi_sense_data *sense;
2349 u_int32_t resid = 0;
2352 int error_code, sense_key, asc, ascq, error, aqvalid;
2354 periph = xpt_path_periph(ccb->ccb_h.path);
2355 softc = (struct sa_softc *)periph->softc;
2357 sense = &csio->sense_data;
2358 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq);
2359 aqvalid = sense->extra_len >= 6;
2362 status = csio->ccb_h.status & CAM_STATUS_MASK;
2365 * Calculate/latch up, any residuals... We do this in a funny 2-step
2366 * so we can print stuff here if we have CAM_DEBUG enabled for this
2369 if (status == CAM_SCSI_STATUS_ERROR) {
2370 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
2371 info = (int32_t) scsi_4btoul(sense->info);
2373 if ((softc->flags & SA_FLAG_FIXED) != 0)
2374 resid *= softc->media_blksize;
2376 resid = csio->dxfer_len;
2378 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2379 if (softc->media_blksize)
2380 info /= softc->media_blksize;
2383 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) {
2384 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
2385 sizeof (struct scsi_sense_data));
2386 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
2387 (int) csio->cdb_len);
2388 softc->last_io_resid = resid;
2389 softc->last_resid_was_io = 1;
2391 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
2392 sizeof (struct scsi_sense_data));
2393 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
2394 (int) csio->cdb_len);
2395 softc->last_ctl_resid = resid;
2396 softc->last_resid_was_io = 0;
2398 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
2399 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d "
2400 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
2401 sense_key, asc, ascq, status,
2402 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len));
2404 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2405 ("Cam Status 0x%x\n", status));
2411 case CAM_SCSI_STATUS_ERROR:
2413 * If a read/write command, we handle it here.
2415 if (CCB_Type(csio) != SA_CCB_WAITING) {
2419 * If this was just EOM/EOP, Filemark, Setmark or ILI detected
2420 * on a non read/write command, we assume it's not an error
2421 * and propagate the residule and return.
2423 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) ||
2424 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
2425 csio->resid = resid;
2430 * Otherwise, we let the common code handle this.
2432 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2436 * We cannot depend upon CAM honoring retry counts for these.
2438 case CAM_SCSI_BUS_RESET:
2440 if (ccb->ccb_h.retry_count <= 0) {
2445 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2449 * Handle filemark, end of tape, mismatched record sizes....
2450 * From this point out, we're only handling read/write cases.
2451 * Handle writes && reads differently.
2454 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
2455 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
2456 csio->resid = resid;
2458 } else if (sense->flags & SSD_EOM) {
2459 softc->flags |= SA_FLAG_EOM_PENDING;
2461 * Grotesque as it seems, the few times
2462 * I've actually seen a non-zero resid,
2463 * the tape drive actually lied and had
2464 * written all the data!.
2469 csio->resid = resid;
2470 if (sense_key == SSD_KEY_BLANK_CHECK) {
2471 if (softc->quirks & SA_QUIRK_1FM) {
2473 softc->flags |= SA_FLAG_EOM_PENDING;
2477 } else if (sense->flags & SSD_FILEMARK) {
2478 if (softc->flags & SA_FLAG_FIXED) {
2480 softc->flags |= SA_FLAG_EOF_PENDING;
2483 * Unconditionally, if we detected a filemark on a read,
2484 * mark that we've run moved a file ahead.
2486 if (softc->fileno != (daddr_t) -1) {
2489 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
2495 * Incorrect Length usually applies to read, but can apply to writes.
2497 if (error == 0 && (sense->flags & SSD_ILI)) {
2499 xpt_print(csio->ccb_h.path, toobig,
2500 csio->dxfer_len - info);
2501 csio->resid = csio->dxfer_len;
2504 csio->resid = resid;
2505 if (softc->flags & SA_FLAG_FIXED) {
2506 softc->flags |= SA_FLAG_EIO_PENDING;
2509 * Bump the block number if we hadn't seen a filemark.
2510 * Do this independent of errors (we've moved anyway).
2512 if ((sense->flags & SSD_FILEMARK) == 0) {
2513 if (softc->blkno != (daddr_t) -1) {
2515 csio->ccb_h.ccb_pflags |=
2516 SA_POSITION_UPDATED;
2524 * Unfreeze the queue if frozen as we're not returning anything
2525 * to our waiters that would indicate an I/O error has occurred
2535 sagetparams(struct cam_periph *periph, sa_params params_to_get,
2536 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
2537 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
2538 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
2543 struct scsi_mode_header_6 *mode_hdr;
2544 struct scsi_mode_blk_desc *mode_blk;
2545 int mode_buffer_len;
2546 struct sa_softc *softc;
2551 softc = (struct sa_softc *)periph->softc;
2552 ccb = cam_periph_getccb(periph, 1);
2553 if (softc->quirks & SA_QUIRK_NO_CPAGE)
2554 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2556 cpage = SA_DATA_COMPRESSION_PAGE;
2559 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2561 if (params_to_get & SA_PARAM_COMPRESSION) {
2562 if (softc->quirks & SA_QUIRK_NOCOMP) {
2563 *comp_supported = FALSE;
2564 params_to_get &= ~SA_PARAM_COMPRESSION;
2566 mode_buffer_len += sizeof (sa_comp_t);
2569 mode_buffer = kmalloc(mode_buffer_len, M_SCSISA, M_INTWAIT | M_ZERO);
2570 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2571 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2573 /* it is safe to retry this */
2574 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2575 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
2576 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
2577 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2579 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2580 &softc->device_stats);
2583 status = ccb->ccb_h.status & CAM_STATUS_MASK;
2585 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
2587 * Hmm. Let's see if we can try another page...
2588 * If we've already done that, give up on compression
2589 * for this device and remember this for the future
2590 * and attempt the request without asking for compression
2593 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2594 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2597 softc->quirks |= SA_QUIRK_NOCOMP;
2598 kfree(mode_buffer, M_SCSISA);
2600 } else if (status == CAM_SCSI_STATUS_ERROR) {
2601 /* Tell the user about the fatal error. */
2602 scsi_sense_print(&ccb->csio);
2603 goto sagetparamsexit;
2607 * If the user only wants the compression information, and
2608 * the device doesn't send back the block descriptor, it's
2609 * no big deal. If the user wants more than just
2610 * compression, though, and the device doesn't pass back the
2611 * block descriptor, we need to send another mode sense to
2612 * get the block descriptor.
2614 if ((mode_hdr->blk_desc_len == 0) &&
2615 (params_to_get & SA_PARAM_COMPRESSION) &&
2616 (params_to_get & ~(SA_PARAM_COMPRESSION))) {
2619 * Decrease the mode buffer length by the size of
2620 * the compression page, to make sure the data
2621 * there doesn't get overwritten.
2623 mode_buffer_len -= sizeof (sa_comp_t);
2626 * Now move the compression page that we presumably
2627 * got back down the memory chunk a little bit so
2628 * it doesn't get spammed.
2630 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
2631 bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
2634 * Now, we issue another mode sense and just ask
2635 * for the block descriptor, etc.
2638 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2639 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
2640 mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
2643 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2644 &softc->device_stats);
2648 goto sagetparamsexit;
2651 if (params_to_get & SA_PARAM_BLOCKSIZE)
2652 *blocksize = scsi_3btoul(mode_blk->blklen);
2654 if (params_to_get & SA_PARAM_NUMBLOCKS)
2655 *numblocks = scsi_3btoul(mode_blk->nblocks);
2657 if (params_to_get & SA_PARAM_BUFF_MODE)
2658 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
2660 if (params_to_get & SA_PARAM_DENSITY)
2661 *density = mode_blk->density;
2663 if (params_to_get & SA_PARAM_WP)
2664 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
2666 if (params_to_get & SA_PARAM_SPEED)
2667 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
2669 if (params_to_get & SA_PARAM_COMPRESSION) {
2670 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
2671 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2672 struct scsi_data_compression_page *cp = &ntcs->dcomp;
2674 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
2676 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
2677 *comp_algorithm = scsi_4btoul(cp->comp_algorithm);
2679 struct scsi_dev_conf_page *cp = &ntcs->dconf;
2681 * We don't really know whether this device supports
2682 * Data Compression if the the algorithm field is
2683 * zero. Just say we do.
2685 *comp_supported = TRUE;
2687 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
2688 *comp_algorithm = cp->sel_comp_alg;
2691 bcopy(ntcs, tcs, sizeof (sa_comp_t));
2694 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2696 char *xyz = mode_buffer;
2697 xpt_print_path(periph->path);
2698 kprintf("Mode Sense Data=");
2699 for (idx = 0; idx < mode_buffer_len; idx++)
2700 kprintf(" 0x%02x", xyz[idx] & 0xff);
2706 xpt_release_ccb(ccb);
2707 kfree(mode_buffer, M_SCSISA);
2712 * The purpose of this function is to set one of four different parameters
2716 * - compression / compression algorithm
2719 * The assumption is that this will be called from saioctl(), and therefore
2720 * from a process context. Thus the waiting malloc calls below. If that
2721 * assumption ever changes, the malloc calls should be changed to be
2724 * Any or all of the four parameters may be set when this function is
2725 * called. It should handle setting more than one parameter at once.
2728 sasetparams(struct cam_periph *periph, sa_params params_to_set,
2729 u_int32_t blocksize, u_int8_t density, u_int32_t calg,
2730 u_int32_t sense_flags)
2732 struct sa_softc *softc;
2733 u_int32_t current_blocksize = 0;/* silence gcc */
2734 u_int32_t current_calg;
2735 u_int8_t current_density = 0; /* silence gcc */
2736 u_int8_t current_speed = 0; /* silence gcc */
2737 int comp_enabled, comp_supported;
2739 int mode_buffer_len;
2740 struct scsi_mode_header_6 *mode_hdr;
2741 struct scsi_mode_blk_desc *mode_blk;
2742 sa_comp_t *ccomp, *cpage;
2744 union ccb *ccb = NULL;
2747 softc = (struct sa_softc *)periph->softc;
2749 ccomp = kmalloc(sizeof (sa_comp_t), M_SCSISA, M_INTWAIT);
2752 * Since it doesn't make sense to set the number of blocks, or
2753 * write protection, we won't try to get the current value. We
2754 * always want to get the blocksize, so we can set it back to the
2757 error = sagetparams(periph,
2758 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED,
2759 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL,
2760 ¤t_speed, &comp_supported, &comp_enabled,
2761 ¤t_calg, ccomp);
2764 kfree(ccomp, M_SCSISA);
2768 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2769 if (params_to_set & SA_PARAM_COMPRESSION)
2770 mode_buffer_len += sizeof (sa_comp_t);
2772 mode_buffer = kmalloc(mode_buffer_len, M_SCSISA, M_INTWAIT | M_ZERO);
2774 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2775 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2777 ccb = cam_periph_getccb(periph, 1);
2781 if (params_to_set & SA_PARAM_COMPRESSION) {
2783 cpage = (sa_comp_t *)&mode_blk[1];
2785 cpage = (sa_comp_t *)&mode_hdr[1];
2787 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2788 cpage->hdr.pagecode &= ~0x80;
2793 * If the caller wants us to set the blocksize, use the one they
2794 * pass in. Otherwise, use the blocksize we got back from the
2795 * mode select above.
2798 if (params_to_set & SA_PARAM_BLOCKSIZE)
2799 scsi_ulto3b(blocksize, mode_blk->blklen);
2801 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2804 * Set density if requested, else preserve old density.
2805 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2806 * devices, else density we've latched up in our softc.
2808 if (params_to_set & SA_PARAM_DENSITY) {
2809 mode_blk->density = density;
2810 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2811 mode_blk->density = SCSI_SAME_DENSITY;
2813 mode_blk->density = softc->media_density;
2818 * For mode selects, these two fields must be zero.
2820 mode_hdr->data_length = 0;
2821 mode_hdr->medium_type = 0;
2823 /* set the speed to the current value */
2824 mode_hdr->dev_spec = current_speed;
2826 /* if set, set single-initiator buffering mode */
2827 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) {
2828 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
2832 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
2834 mode_hdr->blk_desc_len = 0;
2837 * First, if the user wants us to set the compression algorithm or
2838 * just turn compression on, check to make sure that this drive
2839 * supports compression.
2841 if (params_to_set & SA_PARAM_COMPRESSION) {
2843 * If the compression algorithm is 0, disable compression.
2844 * If the compression algorithm is non-zero, enable
2845 * compression and set the compression type to the
2846 * specified compression algorithm, unless the algorithm is
2847 * MT_COMP_ENABLE. In that case, we look at the
2848 * compression algorithm that is currently set and if it is
2849 * non-zero, we leave it as-is. If it is zero, and we have
2850 * saved a compression algorithm from a time when
2851 * compression was enabled before, set the compression to
2854 switch (ccomp->hdr.pagecode & ~0x80) {
2855 case SA_DEVICE_CONFIGURATION_PAGE:
2857 struct scsi_dev_conf_page *dcp = &cpage->dconf;
2859 dcp->sel_comp_alg = SA_COMP_NONE;
2862 if (calg != MT_COMP_ENABLE) {
2863 dcp->sel_comp_alg = calg;
2864 } else if (dcp->sel_comp_alg == SA_COMP_NONE &&
2865 softc->saved_comp_algorithm != 0) {
2866 dcp->sel_comp_alg = softc->saved_comp_algorithm;
2870 case SA_DATA_COMPRESSION_PAGE:
2871 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
2872 struct scsi_data_compression_page *dcp = &cpage->dcomp;
2875 * Disable compression, but leave the
2876 * decompression and the capability bit
2879 dcp->dce_and_dcc = SA_DCP_DCC;
2880 dcp->dde_and_red |= SA_DCP_DDE;
2883 /* enable compression && decompression */
2884 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
2885 dcp->dde_and_red |= SA_DCP_DDE;
2887 * If there, use compression algorithm from caller.
2888 * Otherwise, if there's a saved compression algorithm
2889 * and there is no current algorithm, use the saved
2890 * algorithm. Else parrot back what we got and hope
2893 if (calg != MT_COMP_ENABLE) {
2894 scsi_ulto4b(calg, dcp->comp_algorithm);
2895 scsi_ulto4b(calg, dcp->decomp_algorithm);
2896 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
2897 softc->saved_comp_algorithm != 0) {
2898 scsi_ulto4b(softc->saved_comp_algorithm,
2899 dcp->comp_algorithm);
2900 scsi_ulto4b(softc->saved_comp_algorithm,
2901 dcp->decomp_algorithm);
2906 * Compression does not appear to be supported-
2907 * at least via the DATA COMPRESSION page. It
2908 * would be too much to ask us to believe that
2909 * the page itself is supported, but incorrectly
2910 * reports an ability to manipulate data compression,
2911 * so we'll assume that this device doesn't support
2912 * compression. We can just fall through for that.
2917 * The drive doesn't seem to support compression,
2918 * so turn off the set compression bit.
2920 params_to_set &= ~SA_PARAM_COMPRESSION;
2921 xpt_print(periph->path,
2922 "device does not seem to support compression\n");
2925 * If that was the only thing the user wanted us to set,
2926 * clean up allocated resources and return with
2927 * 'operation not supported'.
2929 if (params_to_set == SA_PARAM_NONE) {
2930 kfree(mode_buffer, M_SCSISA);
2931 xpt_release_ccb(ccb);
2936 * That wasn't the only thing the user wanted us to set.
2937 * So, decrease the stated mode buffer length by the
2938 * size of the compression mode page.
2940 mode_buffer_len -= sizeof(sa_comp_t);
2944 /* It is safe to retry this operation */
2945 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
2946 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
2947 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2949 error = cam_periph_runccb(ccb, saerror, 0,
2950 sense_flags, &softc->device_stats);
2953 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2955 char *xyz = mode_buffer;
2956 xpt_print_path(periph->path);
2957 kprintf("Err%d, Mode Select Data=", error);
2958 for (idx = 0; idx < mode_buffer_len; idx++)
2959 kprintf(" 0x%02x", xyz[idx] & 0xff);
2966 * If we can, try without setting density/blocksize.
2969 if ((params_to_set &
2970 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
2975 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2976 cpage = (sa_comp_t *)&mode_blk[1];
2980 * If we were setting the blocksize, and that failed, we
2981 * want to set it to its original value. If we weren't
2982 * setting the blocksize, we don't want to change it.
2984 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2987 * Set density if requested, else preserve old density.
2988 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2989 * devices, else density we've latched up in our softc.
2991 if (params_to_set & SA_PARAM_DENSITY) {
2992 mode_blk->density = current_density;
2993 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2994 mode_blk->density = SCSI_SAME_DENSITY;
2996 mode_blk->density = softc->media_density;
2999 if (params_to_set & SA_PARAM_COMPRESSION)
3000 bcopy(ccomp, cpage, sizeof (sa_comp_t));
3003 * The retry count is the only CCB field that might have been
3004 * changed that we care about, so reset it back to 1.
3006 ccb->ccb_h.retry_count = 1;
3007 cam_periph_runccb(ccb, saerror, 0, sense_flags,
3008 &softc->device_stats);
3012 xpt_release_ccb(ccb);
3015 kfree(ccomp, M_SCSISA);
3017 if (params_to_set & SA_PARAM_COMPRESSION) {
3019 softc->flags &= ~SA_FLAG_COMP_ENABLED;
3021 * Even if we get an error setting compression,
3022 * do not say that we don't support it. We could
3023 * have been wrong, or it may be media specific.
3024 * softc->flags &= ~SA_FLAG_COMP_SUPP;
3026 softc->saved_comp_algorithm = softc->comp_algorithm;
3027 softc->comp_algorithm = 0;
3029 softc->flags |= SA_FLAG_COMP_ENABLED;
3030 softc->comp_algorithm = calg;
3034 kfree(mode_buffer, M_SCSISA);
3039 saprevent(struct cam_periph *periph, int action)
3041 struct sa_softc *softc;
3045 softc = (struct sa_softc *)periph->softc;
3047 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
3049 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
3053 * We can be quiet about illegal requests.
3055 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
3060 ccb = cam_periph_getccb(periph, 1);
3062 /* It is safe to retry this operation */
3063 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
3064 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3066 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats);
3069 if (action == PR_ALLOW)
3070 softc->flags &= ~SA_FLAG_TAPE_LOCKED;
3072 softc->flags |= SA_FLAG_TAPE_LOCKED;
3075 xpt_release_ccb(ccb);
3079 sarewind(struct cam_periph *periph)
3082 struct sa_softc *softc;
3085 softc = (struct sa_softc *)periph->softc;
3087 ccb = cam_periph_getccb(periph, 1);
3089 /* It is safe to retry this operation */
3090 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3091 SSD_FULL_SIZE, REWIND_TIMEOUT);
3093 softc->dsreg = MTIO_DSREG_REW;
3094 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3095 softc->dsreg = MTIO_DSREG_REST;
3097 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3098 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3100 xpt_release_ccb(ccb);
3102 softc->fileno = softc->blkno = (daddr_t) 0;
3104 softc->fileno = softc->blkno = (daddr_t) -1;
3109 saspace(struct cam_periph *periph, int count, scsi_space_code code)
3112 struct sa_softc *softc;
3115 softc = (struct sa_softc *)periph->softc;
3117 ccb = cam_periph_getccb(periph, 1);
3119 /* This cannot be retried */
3121 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
3122 SSD_FULL_SIZE, SPACE_TIMEOUT);
3125 * Clear residual because we will be using it.
3127 softc->last_ctl_resid = 0;
3129 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
3130 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3131 softc->dsreg = MTIO_DSREG_REST;
3133 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3134 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3136 xpt_release_ccb(ccb);
3139 * If a spacing operation has failed, we need to invalidate
3142 * If the spacing operation was setmarks or to end of recorded data,
3143 * we no longer know our relative position.
3145 * If the spacing operations was spacing files in reverse, we
3146 * take account of the residual, but still check against less
3147 * than zero- if we've gone negative, we must have hit BOT.
3149 * If the spacing operations was spacing records in reverse and
3150 * we have a residual, we've either hit BOT or hit a filemark.
3151 * In the former case, we know our new record number (0). In
3152 * the latter case, we have absolutely no idea what the real
3153 * record number is- we've stopped between the end of the last
3154 * record in the previous file and the filemark that stopped
3155 * our spacing backwards.
3158 softc->fileno = softc->blkno = (daddr_t) -1;
3159 } else if (code == SS_SETMARKS || code == SS_EOD) {
3160 softc->fileno = softc->blkno = (daddr_t) -1;
3161 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
3162 softc->fileno += (count - softc->last_ctl_resid);
3163 if (softc->fileno < 0) /* we must of hit BOT */
3166 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
3167 softc->blkno += (count - softc->last_ctl_resid);
3169 if (softc->last_ctl_resid || softc->blkno < 0) {
3170 if (softc->fileno == 0) {
3173 softc->blkno = (daddr_t) -1;
3182 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
3185 struct sa_softc *softc;
3188 softc = (struct sa_softc *)periph->softc;
3189 if (softc->open_rdonly)
3192 ccb = cam_periph_getccb(periph, 1);
3194 * Clear residual because we will be using it.
3196 softc->last_ctl_resid = 0;
3198 softc->dsreg = MTIO_DSREG_FMK;
3199 /* this *must* not be retried */
3200 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
3201 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
3202 softc->dsreg = MTIO_DSREG_REST;
3205 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3207 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3208 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3210 if (error == 0 && nmarks) {
3211 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3212 nwm = nmarks - softc->last_ctl_resid;
3213 softc->filemarks += nwm;
3216 xpt_release_ccb(ccb);
3219 * Update relative positions (if we're doing that).
3222 softc->fileno = softc->blkno = (daddr_t) -1;
3223 } else if (softc->fileno != (daddr_t) -1) {
3224 softc->fileno += nwm;
3231 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3233 struct scsi_tape_position_data loc;
3235 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3239 * We try and flush any buffered writes here if we were writing
3240 * and we're trying to get hardware block position. It eats
3241 * up performance substantially, but I'm wary of drive firmware.
3243 * I think that *logical* block position is probably okay-
3244 * but hardware block position might have to wait for data
3245 * to hit media to be valid. Caveat Emptor.
3248 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
3249 error = sawritefilemarks(periph, 0, 0);
3250 if (error && error != EACCES)
3254 ccb = cam_periph_getccb(periph, 1);
3255 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3256 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3257 softc->dsreg = MTIO_DSREG_RBSY;
3258 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3259 softc->dsreg = MTIO_DSREG_REST;
3260 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3261 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3264 if (loc.flags & SA_RPOS_UNCERTAIN) {
3265 error = EINVAL; /* nothing is certain */
3267 *blkptr = scsi_4btoul(loc.firstblk);
3271 xpt_release_ccb(ccb);
3276 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3279 struct sa_softc *softc;
3283 * We used to try and flush any buffered writes here.
3284 * Now we push this onto user applications to either
3285 * flush the pending writes themselves (via a zero count
3286 * WRITE FILEMARKS command) or they can trust their tape
3287 * drive to do this correctly for them.
3290 softc = (struct sa_softc *)periph->softc;
3291 ccb = cam_periph_getccb(periph, 1);
3294 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3295 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT);
3298 softc->dsreg = MTIO_DSREG_POS;
3299 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3300 softc->dsreg = MTIO_DSREG_REST;
3301 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3302 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3303 xpt_release_ccb(ccb);
3305 * Note relative file && block number position as now unknown.
3307 softc->fileno = softc->blkno = (daddr_t) -1;
3312 saretension(struct cam_periph *periph)
3315 struct sa_softc *softc;
3318 softc = (struct sa_softc *)periph->softc;
3320 ccb = cam_periph_getccb(periph, 1);
3322 /* It is safe to retry this operation */
3323 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3324 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
3326 softc->dsreg = MTIO_DSREG_TEN;
3327 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3328 softc->dsreg = MTIO_DSREG_REST;
3330 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3331 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3332 xpt_release_ccb(ccb);
3334 softc->fileno = softc->blkno = (daddr_t) 0;
3336 softc->fileno = softc->blkno = (daddr_t) -1;
3341 sareservereleaseunit(struct cam_periph *periph, int reserve)
3344 struct sa_softc *softc;
3347 softc = (struct sa_softc *)periph->softc;
3348 ccb = cam_periph_getccb(periph, 1);
3350 /* It is safe to retry this operation */
3351 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
3352 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
3353 softc->dsreg = MTIO_DSREG_RBSY;
3354 error = cam_periph_runccb(ccb, saerror, 0,
3355 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats);
3356 softc->dsreg = MTIO_DSREG_REST;
3358 xpt_release_ccb(ccb);
3361 * If the error was Illegal Request, then the device doesn't support
3362 * RESERVE/RELEASE. This is not an error.
3364 if (error == EINVAL) {
3372 saloadunload(struct cam_periph *periph, int load)
3375 struct sa_softc *softc;
3378 softc = (struct sa_softc *)periph->softc;
3380 ccb = cam_periph_getccb(periph, 1);
3382 /* It is safe to retry this operation */
3383 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3384 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
3386 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
3387 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3388 softc->dsreg = MTIO_DSREG_REST;
3390 xpt_release_ccb(ccb);
3392 if (error || load == 0)
3393 softc->fileno = softc->blkno = (daddr_t) -1;
3394 else if (error == 0)
3395 softc->fileno = softc->blkno = (daddr_t) 0;
3400 saerase(struct cam_periph *periph, int longerase)
3404 struct sa_softc *softc;
3407 softc = (struct sa_softc *)periph->softc;
3408 if (softc->open_rdonly)
3411 ccb = cam_periph_getccb(periph, 1);
3413 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
3414 SSD_FULL_SIZE, ERASE_TIMEOUT);
3416 softc->dsreg = MTIO_DSREG_ZER;
3417 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3418 softc->dsreg = MTIO_DSREG_REST;
3420 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3421 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3422 xpt_release_ccb(ccb);
3426 #endif /* _KERNEL */
3429 * Read tape block limits command.
3432 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
3433 void (*cbfcnp)(struct cam_periph *, union ccb *),
3434 u_int8_t tag_action,
3435 struct scsi_read_block_limits_data *rlimit_buf,
3436 u_int8_t sense_len, u_int32_t timeout)
3438 struct scsi_read_block_limits *scsi_cmd;
3440 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3441 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
3442 sizeof(*scsi_cmd), timeout);
3444 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
3445 bzero(scsi_cmd, sizeof(*scsi_cmd));
3446 scsi_cmd->opcode = READ_BLOCK_LIMITS;
3450 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
3451 void (*cbfcnp)(struct cam_periph *, union ccb *),
3452 u_int8_t tag_action, int readop, int sli,
3453 int fixed, u_int32_t length, u_int8_t *data_ptr,
3454 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
3456 struct scsi_sa_rw *scsi_cmd;
3458 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
3459 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE;
3460 scsi_cmd->sli_fixed = 0;
3462 scsi_cmd->sli_fixed |= SAR_SLI;
3464 scsi_cmd->sli_fixed |= SARW_FIXED;
3465 scsi_ulto3b(length, scsi_cmd->length);
3466 scsi_cmd->control = 0;
3468 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT,
3469 tag_action, data_ptr, dxfer_len, sense_len,
3470 sizeof(*scsi_cmd), timeout);
3474 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
3475 void (*cbfcnp)(struct cam_periph *, union ccb *),
3476 u_int8_t tag_action, int immediate, int eot,
3477 int reten, int load, u_int8_t sense_len,
3480 struct scsi_load_unload *scsi_cmd;
3482 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
3483 bzero(scsi_cmd, sizeof(*scsi_cmd));
3484 scsi_cmd->opcode = LOAD_UNLOAD;
3486 scsi_cmd->immediate = SLU_IMMED;
3488 scsi_cmd->eot_reten_load |= SLU_EOT;
3490 scsi_cmd->eot_reten_load |= SLU_RETEN;
3492 scsi_cmd->eot_reten_load |= SLU_LOAD;
3494 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3495 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
3499 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
3500 void (*cbfcnp)(struct cam_periph *, union ccb *),
3501 u_int8_t tag_action, int immediate, u_int8_t sense_len,
3504 struct scsi_rewind *scsi_cmd;
3506 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
3507 bzero(scsi_cmd, sizeof(*scsi_cmd));
3508 scsi_cmd->opcode = REWIND;
3510 scsi_cmd->immediate = SREW_IMMED;
3512 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3513 0, sense_len, sizeof(*scsi_cmd), timeout);
3517 scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
3518 void (*cbfcnp)(struct cam_periph *, union ccb *),
3519 u_int8_t tag_action, scsi_space_code code,
3520 u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
3522 struct scsi_space *scsi_cmd;
3524 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
3525 scsi_cmd->opcode = SPACE;
3526 scsi_cmd->code = code;
3527 scsi_ulto3b(count, scsi_cmd->count);
3528 scsi_cmd->control = 0;
3530 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3531 0, sense_len, sizeof(*scsi_cmd), timeout);
3535 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
3536 void (*cbfcnp)(struct cam_periph *, union ccb *),
3537 u_int8_t tag_action, int immediate, int setmark,
3538 u_int32_t num_marks, u_int8_t sense_len,
3541 struct scsi_write_filemarks *scsi_cmd;
3543 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
3544 bzero(scsi_cmd, sizeof(*scsi_cmd));
3545 scsi_cmd->opcode = WRITE_FILEMARKS;
3547 scsi_cmd->byte2 |= SWFMRK_IMMED;
3549 scsi_cmd->byte2 |= SWFMRK_WSMK;
3551 scsi_ulto3b(num_marks, scsi_cmd->num_marks);
3553 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3554 0, sense_len, sizeof(*scsi_cmd), timeout);
3558 * The reserve and release unit commands differ only by their opcodes.
3561 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
3562 void (*cbfcnp)(struct cam_periph *, union ccb *),
3563 u_int8_t tag_action, int third_party,
3564 int third_party_id, u_int8_t sense_len,
3565 u_int32_t timeout, int reserve)
3567 struct scsi_reserve_release_unit *scsi_cmd;
3569 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
3570 bzero(scsi_cmd, sizeof(*scsi_cmd));
3573 scsi_cmd->opcode = RESERVE_UNIT;
3575 scsi_cmd->opcode = RELEASE_UNIT;
3578 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
3579 scsi_cmd->lun_thirdparty |=
3580 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
3583 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3584 0, sense_len, sizeof(*scsi_cmd), timeout);
3588 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
3589 void (*cbfcnp)(struct cam_periph *, union ccb *),
3590 u_int8_t tag_action, int immediate, int long_erase,
3591 u_int8_t sense_len, u_int32_t timeout)
3593 struct scsi_erase *scsi_cmd;
3595 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
3596 bzero(scsi_cmd, sizeof(*scsi_cmd));
3598 scsi_cmd->opcode = ERASE;
3601 scsi_cmd->lun_imm_long |= SE_IMMED;
3604 scsi_cmd->lun_imm_long |= SE_LONG;
3606 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3607 0, sense_len, sizeof(*scsi_cmd), timeout);
3611 * Read Tape Position command.
3614 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
3615 void (*cbfcnp)(struct cam_periph *, union ccb *),
3616 u_int8_t tag_action, int hardsoft,
3617 struct scsi_tape_position_data *sbp,
3618 u_int8_t sense_len, u_int32_t timeout)
3620 struct scsi_tape_read_position *scmd;
3622 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3623 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
3624 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
3625 bzero(scmd, sizeof(*scmd));
3626 scmd->opcode = READ_POSITION;
3627 scmd->byte1 = hardsoft;
3631 * Set Tape Position command.
3634 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries,
3635 void (*cbfcnp)(struct cam_periph *, union ccb *),
3636 u_int8_t tag_action, int hardsoft, u_int32_t blkno,
3637 u_int8_t sense_len, u_int32_t timeout)
3639 struct scsi_tape_locate *scmd;
3641 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3642 NULL, 0, sense_len, sizeof(*scmd), timeout);
3643 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
3644 bzero(scmd, sizeof(*scmd));
3645 scmd->opcode = LOCATE;
3647 scmd->byte1 |= SA_SPOS_BT;
3648 scsi_ulto4b(blkno, scmd->blkaddr);