2 * $FreeBSD: src/sys/cam/scsi/scsi_sa.c,v 1.45.2.13 2002/12/17 17:08:50 trhodes Exp $
3 * $DragonFly: src/sys/bus/cam/scsi/scsi_sa.c,v 1.30 2007/11/29 02:56:42 pavalos Exp $
5 * Implementation of SCSI Sequential Access Peripheral driver for CAM.
7 * Copyright (c) 1999, 2000 Matthew Jacob
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions, and the following disclaimer,
15 * without modification, immediately at the beginning of the file.
16 * 2. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/param.h>
34 #include <sys/queue.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
39 #include <sys/types.h>
42 #include <sys/malloc.h>
49 #include <sys/thread2.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)
112 SA_STATE_NORMAL, SA_STATE_ABNORMAL
115 #define ccb_pflags ppriv_field0
116 #define ccb_bio ppriv_ptr1
118 #define SA_CCB_BUFFER_IO 0x0
119 #define SA_CCB_WAITING 0x1
120 #define SA_CCB_TYPEMASK 0x1
121 #define SA_POSITION_UPDATED 0x2
123 #define Set_CCB_Type(x, type) \
124 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \
125 x->ccb_h.ccb_pflags |= type
127 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK)
132 SA_FLAG_OPEN = 0x0001,
133 SA_FLAG_FIXED = 0x0002,
134 SA_FLAG_TAPE_LOCKED = 0x0004,
135 SA_FLAG_TAPE_MOUNTED = 0x0008,
136 SA_FLAG_TAPE_WP = 0x0010,
137 SA_FLAG_TAPE_WRITTEN = 0x0020,
138 SA_FLAG_EOM_PENDING = 0x0040,
139 SA_FLAG_EIO_PENDING = 0x0080,
140 SA_FLAG_EOF_PENDING = 0x0100,
141 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
142 SA_FLAG_EOF_PENDING),
143 SA_FLAG_INVALID = 0x0200,
144 SA_FLAG_COMP_ENABLED = 0x0400,
145 SA_FLAG_COMP_SUPP = 0x0800,
146 SA_FLAG_COMP_UNSUPP = 0x1000,
147 SA_FLAG_TAPE_FROZEN = 0x2000
151 SA_MODE_REWIND = 0x00,
152 SA_MODE_NOREWIND = 0x01,
153 SA_MODE_OFFLINE = 0x02
157 SA_PARAM_NONE = 0x00,
158 SA_PARAM_BLOCKSIZE = 0x01,
159 SA_PARAM_DENSITY = 0x02,
160 SA_PARAM_COMPRESSION = 0x04,
161 SA_PARAM_BUFF_MODE = 0x08,
162 SA_PARAM_NUMBLOCKS = 0x10,
164 SA_PARAM_SPEED = 0x40,
169 SA_QUIRK_NONE = 0x00,
170 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */
171 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */
172 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */
173 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */
174 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */
175 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */
176 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */
177 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */
180 /* units are bits 4-7, 16-21 (1024 units) */
181 #define SAUNIT(DEV) \
182 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16))
184 #define SAMODE(z) ((minor(z) & 0x3))
185 #define SADENSITY(z) (((minor(z) >> 2) & 0x3))
186 #define SA_IS_CTRL(z) (minor(z) & (1 << 29))
188 #define SA_NOT_CTLDEV 0
192 #define SA_ATYPE_NR 1
193 #define SA_ATYPE_ER 2
195 #define SAMINOR(ctl, unit, mode, access) \
196 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \
197 (mode << 0x2) | (access & 0x3))
199 #define SA_UNITMASK SAMINOR(0, -1, 0, 0)
200 #define SA_UNIT(unit) SAMINOR(0, unit, 0, 0)
202 #define SA_NUM_MODES 4
208 struct bio_queue_head bio_queue;
210 struct devstat device_stats;
216 u_int32_t comp_algorithm;
217 u_int32_t saved_comp_algorithm;
218 u_int32_t media_blksize;
219 u_int32_t last_media_blksize;
220 u_int32_t media_numblks;
221 u_int8_t media_density;
224 u_int8_t dsreg; /* mtio mt_dsreg, redux */
228 int last_resid_was_io;
231 * Relative to BOT Location.
240 struct scsi_sense_data _last_io_sense;
241 u_int32_t _last_io_resid;
242 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
243 struct scsi_sense_data _last_ctl_sense;
244 u_int32_t _last_ctl_resid;
245 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
246 #define last_io_sense errinfo._last_io_sense
247 #define last_io_resid errinfo._last_io_resid
248 #define last_io_cdb errinfo._last_io_cdb
249 #define last_ctl_sense errinfo._last_ctl_sense
250 #define last_ctl_resid errinfo._last_ctl_resid
251 #define last_ctl_cdb errinfo._last_ctl_cdb
254 * Misc other flags/state
258 ctrl_mode : 1; /* control device open */
261 struct sa_quirk_entry {
262 struct scsi_inquiry_pattern inq_pat; /* matching pattern */
263 sa_quirks quirks; /* specific quirk type */
264 u_int32_t prefblk; /* preferred blocksize when in fixed mode */
267 static struct sa_quirk_entry sa_quirk_table[] =
270 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream",
271 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD |
272 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768
275 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
276 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0
279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
280 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0
283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
284 "Python*", "*"}, SA_QUIRK_NODREAD, 0
287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
288 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
292 "VIPER 2525 25462", "-011"},
293 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0
296 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
297 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
301 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
302 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0,
306 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
307 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
311 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
315 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
319 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
323 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
327 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
329 { /* jreynold@primenet.com */
330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
331 "STT8000N*", "*"}, SA_QUIRK_1FM, 0
333 { /* mike@sentex.net */
334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
335 "STT20000*", "*"}, SA_QUIRK_1FM, 0
338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
339 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
343 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
347 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
351 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
355 " SLR*", "*"}, SA_QUIRK_1FM, 0
358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
359 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
363 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
367 static d_open_t saopen;
368 static d_close_t saclose;
369 static d_strategy_t sastrategy;
370 static d_ioctl_t saioctl;
371 static periph_init_t sainit;
372 static periph_ctor_t saregister;
373 static periph_oninv_t saoninvalidate;
374 static periph_dtor_t sacleanup;
375 static periph_start_t sastart;
376 static void saasync(void *callback_arg, u_int32_t code,
377 struct cam_path *path, void *arg);
378 static void sadone(struct cam_periph *periph,
379 union ccb *start_ccb);
380 static int saerror(union ccb *ccb, u_int32_t cam_flags,
381 u_int32_t sense_flags);
382 static int samarkswanted(struct cam_periph *);
383 static int sacheckeod(struct cam_periph *periph);
384 static int sagetparams(struct cam_periph *periph,
385 sa_params params_to_get,
386 u_int32_t *blocksize, u_int8_t *density,
387 u_int32_t *numblocks, int *buff_mode,
388 u_int8_t *write_protect, u_int8_t *speed,
389 int *comp_supported, int *comp_enabled,
390 u_int32_t *comp_algorithm,
391 sa_comp_t *comp_page);
392 static int sasetparams(struct cam_periph *periph,
393 sa_params params_to_set,
394 u_int32_t blocksize, u_int8_t density,
395 u_int32_t comp_algorithm,
396 u_int32_t sense_flags);
397 static void saprevent(struct cam_periph *periph, int action);
398 static int sarewind(struct cam_periph *periph);
399 static int saspace(struct cam_periph *periph, int count,
400 scsi_space_code code);
401 static int samount(struct cam_periph *, int, cdev_t);
402 static int saretension(struct cam_periph *periph);
403 static int sareservereleaseunit(struct cam_periph *periph,
405 static int saloadunload(struct cam_periph *periph, int load);
406 static int saerase(struct cam_periph *periph, int longerase);
407 static int sawritefilemarks(struct cam_periph *periph,
408 int nmarks, int setmarks);
409 static int sardpos(struct cam_periph *periph, int, u_int32_t *);
410 static int sasetpos(struct cam_periph *periph, int, u_int32_t *);
413 static struct periph_driver sadriver =
416 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
419 PERIPHDRIVER_DECLARE(sa, sadriver);
421 /* For 2.2-stable support */
426 #define SA_CDEV_MAJOR 14
428 static struct dev_ops sa_ops = {
429 { "sa", SA_CDEV_MAJOR, D_TAPE },
433 .d_write = physwrite,
435 .d_strategy = sastrategy,
438 static struct extend_array *saperiphs;
441 saopen(struct dev_open_args *ap)
443 cdev_t dev = ap->a_head.a_dev;
444 struct cam_periph *periph;
445 struct sa_softc *softc;
452 periph = cam_extend_get(saperiphs, unit);
453 if (periph == NULL) {
457 softc = (struct sa_softc *)periph->softc;
458 if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
464 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
465 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
467 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
468 cam_periph_unlock(periph);
471 if (SA_IS_CTRL(dev)) {
472 softc->ctrl_mode = 1;
473 cam_periph_unlock(periph);
478 if (softc->flags & SA_FLAG_OPEN) {
480 } else if (softc->flags & SA_FLAG_INVALID) {
484 * The function samount ensures media is loaded and ready.
485 * It also does a device RESERVE if the tape isn't yet mounted.
487 error = samount(periph, ap->a_oflags, dev);
491 cam_periph_release(periph);
493 saprevent(periph, PR_PREVENT);
494 softc->flags |= SA_FLAG_OPEN;
496 cam_periph_unlock(periph);
501 saclose(struct dev_close_args *ap)
503 cdev_t dev = ap->a_head.a_dev;
504 struct cam_periph *periph;
505 struct sa_softc *softc;
506 int unit, mode, error, writing, tmp;
507 int closedbits = SA_FLAG_OPEN;
511 periph = cam_extend_get(saperiphs, unit);
515 softc = (struct sa_softc *)periph->softc;
517 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
518 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags));
521 if ((error = cam_periph_lock(periph, 0)) != 0) {
525 if (SA_IS_CTRL(dev)) {
526 softc->ctrl_mode = 0;
527 cam_periph_release(periph);
528 cam_periph_unlock(periph);
533 * Were we writing the tape?
535 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0;
538 * See whether or not we need to write filemarks. If this
539 * fails, we probably have to assume we've lost tape
542 error = sacheckeod(periph);
544 xpt_print_path(periph->path);
545 kprintf("failed to write terminating filemark(s)\n");
546 softc->flags |= SA_FLAG_TAPE_FROZEN;
550 * Whatever we end up doing, allow users to eject tapes from here on.
552 saprevent(periph, PR_ALLOW);
555 * Decide how to end...
557 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
558 closedbits |= SA_FLAG_TAPE_FROZEN;
559 } else switch (mode) {
560 case SA_MODE_OFFLINE:
562 * An 'offline' close is an unconditional release of
563 * frozen && mount conditions, irrespective of whether
564 * these operations succeeded. The reason for this is
565 * to allow at least some kind of programmatic way
566 * around our state getting all fouled up. If somebody
567 * issues an 'offline' command, that will be allowed
571 saloadunload(periph, FALSE);
572 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN;
576 * If the rewind fails, return an error- if anyone cares,
577 * but not overwriting any previous error.
579 * We don't clear the notion of mounted here, but we do
580 * clear the notion of frozen if we successfully rewound.
582 tmp = sarewind(periph);
587 closedbits |= SA_FLAG_TAPE_FROZEN;
590 case SA_MODE_NOREWIND:
592 * If we're not rewinding/unloading the tape, find out
593 * whether we need to back up over one of two filemarks
594 * we wrote (if we wrote two filemarks) so that appends
595 * from this point on will be sane.
597 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) {
598 tmp = saspace(periph, -1, SS_FILEMARKS);
600 xpt_print_path(periph->path);
601 kprintf("unable to backspace over one of double"
602 " filemarks at end of tape\n");
603 xpt_print_path(periph->path);
604 kprintf("it is possible that this device"
605 " needs a SA_QUIRK_1FM quirk set for it\n");
606 softc->flags |= SA_FLAG_TAPE_FROZEN;
611 xpt_print_path(periph->path);
612 panic("unknown mode 0x%x in saclose", mode);
618 * We wish to note here that there are no more filemarks to be written.
620 softc->filemarks = 0;
621 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
624 * And we are no longer open for business.
626 softc->flags &= ~closedbits;
629 * Inform users if tape state if frozen....
631 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
632 xpt_print_path(periph->path);
633 kprintf("tape is now frozen- use an OFFLINE, REWIND or MTEOM "
634 "command to clear this state.\n");
637 /* release the device if it is no longer mounted */
638 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0)
639 sareservereleaseunit(periph, FALSE);
641 cam_periph_unlock(periph);
642 cam_periph_release(periph);
648 * Actually translate the requested transfer into one the physical driver
649 * can understand. The transfer is described by a buf and will include
650 * only one physical transfer.
653 sastrategy(struct dev_strategy_args *ap)
655 cdev_t dev = ap->a_head.a_dev;
656 struct bio *bio = ap->a_bio;
657 struct buf *bp = bio->bio_buf;
658 struct cam_periph *periph;
659 struct sa_softc *softc;
662 if (SA_IS_CTRL(dev)) {
663 bp->b_error = EINVAL;
667 periph = cam_extend_get(saperiphs, unit);
668 if (periph == NULL) {
672 softc = (struct sa_softc *)periph->softc;
676 if (softc->flags & SA_FLAG_INVALID) {
682 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
691 * If it's a null transfer, return immediatly
693 if (bp->b_bcount == 0)
697 if (softc->flags & SA_FLAG_FIXED) {
699 * Fixed block device. The byte count must
700 * be a multiple of our block size.
702 if (((softc->blk_mask != ~0) &&
703 ((bp->b_bcount & softc->blk_mask) != 0)) ||
704 ((softc->blk_mask == ~0) &&
705 ((bp->b_bcount % softc->min_blk) != 0))) {
706 xpt_print_path(periph->path);
707 kprintf("Invalid request. Fixed block device "
708 "requests must be a multiple "
709 "of %d bytes\n", softc->media_blksize);
710 bp->b_error = EINVAL;
713 } else if ((bp->b_bcount > softc->max_blk) ||
714 (bp->b_bcount < softc->min_blk) ||
715 (bp->b_bcount & softc->blk_mask) != 0) {
717 xpt_print_path(periph->path);
718 kprintf("Invalid request. Variable block device "
719 "requests must be ");
720 if (softc->blk_mask != 0) {
721 kprintf("a multiple of %d ", (0x1 << softc->blk_gran));
723 kprintf("between %d and %d bytes\n", softc->min_blk,
725 bp->b_error = EINVAL;
730 * Mask interrupts so that the device cannot be invalidated until
731 * after we are in the queue. Otherwise, we might not properly
732 * clean up one of the buffers.
737 * Place it at the end of the queue.
739 bioq_insert_tail(&softc->bio_queue, bio);
740 softc->queue_count++;
742 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
743 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount,
744 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
745 (bp->bio_cmd == BIO_READ)? "read" : "write"));
747 if (softc->queue_count > 1) {
748 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
749 ("sastrategy: queue count now %d\n", softc->queue_count));
754 * Schedule ourselves for performing the work.
756 xpt_schedule(periph, 1);
760 bp->b_flags |= B_ERROR;
764 * Correctly set the buf to indicate a completed xfer
766 bp->b_resid = bp->b_bcount;
772 saioctl(struct dev_ioctl_args *ap)
774 cdev_t dev = ap->a_head.a_dev;
775 caddr_t addr = ap->a_data;
776 struct cam_periph *periph;
777 struct sa_softc *softc;
778 scsi_space_code spaceop;
779 int didlockperiph = 0;
786 error = 0; /* shut up gcc */
787 spaceop = 0; /* shut up gcc */
789 periph = cam_extend_get(saperiphs, unit);
793 softc = (struct sa_softc *)periph->softc;
796 * Check for control mode accesses. We allow MTIOCGET and
797 * MTIOCERRSTAT (but need to be the only one open in order
798 * to clear latched status), and MTSETBSIZE, MTSETDNSTY
799 * and MTCOMP (but need to be the only one accessing this
800 * device to run those).
803 if (SA_IS_CTRL(dev)) {
805 case MTIOCGETEOTMODEL:
810 * If the periph isn't already locked, lock it
811 * so our MTIOCERRSTAT can reset latched error stats.
813 * If the periph is already locked, skip it because
814 * we're just getting status and it'll be up to the
815 * other thread that has this device open to do
816 * an MTIOCERRSTAT that would clear latched status.
819 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
820 error = cam_periph_lock(periph, PCATCH);
830 case MTIOCSETEOTMODEL:
835 * We need to acquire the peripheral here rather
836 * than at open time because we are sharing writable
837 * access to data structures.
840 error = cam_periph_lock(periph, PCATCH);
855 * Find the device that the user is talking about
860 struct mtget *g = (struct mtget *)addr;
863 * If this isn't the control mode device, actually go out
864 * and ask the drive again what it's set to.
866 if (!SA_IS_CTRL(dev)) {
867 u_int8_t write_protect;
868 int comp_enabled, comp_supported;
869 error = sagetparams(periph, SA_PARAM_ALL,
870 &softc->media_blksize, &softc->media_density,
871 &softc->media_numblks, &softc->buffer_mode,
872 &write_protect, &softc->speed, &comp_supported,
873 &comp_enabled, &softc->comp_algorithm, NULL);
877 softc->flags |= SA_FLAG_TAPE_WP;
879 softc->flags &= ~SA_FLAG_TAPE_WP;
880 softc->flags &= ~(SA_FLAG_COMP_SUPP|
881 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP);
882 if (comp_supported) {
883 if (softc->saved_comp_algorithm == 0)
884 softc->saved_comp_algorithm =
885 softc->comp_algorithm;
886 softc->flags |= SA_FLAG_COMP_SUPP;
888 softc->flags |= SA_FLAG_COMP_ENABLED;
890 softc->flags |= SA_FLAG_COMP_UNSUPP;
892 bzero(g, sizeof(struct mtget));
893 g->mt_type = MT_ISAR;
894 if (softc->flags & SA_FLAG_COMP_UNSUPP) {
895 g->mt_comp = MT_COMP_UNSUPP;
896 g->mt_comp0 = MT_COMP_UNSUPP;
897 g->mt_comp1 = MT_COMP_UNSUPP;
898 g->mt_comp2 = MT_COMP_UNSUPP;
899 g->mt_comp3 = MT_COMP_UNSUPP;
901 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
902 g->mt_comp = MT_COMP_DISABLED;
904 g->mt_comp = softc->comp_algorithm;
906 g->mt_comp0 = softc->comp_algorithm;
907 g->mt_comp1 = softc->comp_algorithm;
908 g->mt_comp2 = softc->comp_algorithm;
909 g->mt_comp3 = softc->comp_algorithm;
911 g->mt_density = softc->media_density;
912 g->mt_density0 = softc->media_density;
913 g->mt_density1 = softc->media_density;
914 g->mt_density2 = softc->media_density;
915 g->mt_density3 = softc->media_density;
916 g->mt_blksiz = softc->media_blksize;
917 g->mt_blksiz0 = softc->media_blksize;
918 g->mt_blksiz1 = softc->media_blksize;
919 g->mt_blksiz2 = softc->media_blksize;
920 g->mt_blksiz3 = softc->media_blksize;
921 g->mt_fileno = softc->fileno;
922 g->mt_blkno = softc->blkno;
923 g->mt_dsreg = (short) softc->dsreg;
925 * Yes, we know that this is likely to overflow
927 if (softc->last_resid_was_io) {
928 if ((g->mt_resid = (short) softc->last_io_resid) != 0) {
929 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
930 softc->last_io_resid = 0;
934 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) {
935 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
936 softc->last_ctl_resid = 0;
945 struct scsi_tape_errors *sep =
946 &((union mterrstat *)addr)->scsi_errstat;
948 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
949 ("saioctl: MTIOCERRSTAT\n"));
951 bzero(sep, sizeof(*sep));
952 sep->io_resid = softc->last_io_resid;
953 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
954 sizeof (sep->io_sense));
955 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
956 sizeof (sep->io_cdb));
957 sep->ctl_resid = softc->last_ctl_resid;
958 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
959 sizeof (sep->ctl_sense));
960 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
961 sizeof (sep->ctl_cdb));
963 if (SA_IS_CTRL(dev) == 0 || didlockperiph)
964 bzero((caddr_t) &softc->errinfo,
965 sizeof (softc->errinfo));
974 mt = (struct mtop *)addr;
976 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
977 ("saioctl: op=0x%x count=0x%x\n",
978 mt->mt_op, mt->mt_count));
980 count = mt->mt_count;
982 case MTWEOF: /* write an end-of-file marker */
984 * We don't need to clear the SA_FLAG_TAPE_WRITTEN
985 * flag because by keeping track of filemarks
986 * we have last written we know ehether or not
987 * we need to write more when we close the device.
989 error = sawritefilemarks(periph, count, FALSE);
991 case MTWSS: /* write a setmark */
992 error = sawritefilemarks(periph, count, TRUE);
994 case MTBSR: /* backward space record */
995 case MTFSR: /* forward space record */
996 case MTBSF: /* backward space file */
997 case MTFSF: /* forward space file */
998 case MTBSS: /* backward space setmark */
999 case MTFSS: /* forward space setmark */
1000 case MTEOD: /* space to end of recorded medium */
1004 spaceop = SS_FILEMARKS;
1005 nmarks = softc->filemarks;
1006 error = sacheckeod(periph);
1008 xpt_print_path(periph->path);
1009 kprintf("EOD check prior to spacing failed\n");
1010 softc->flags |= SA_FLAG_EIO_PENDING;
1013 nmarks -= softc->filemarks;
1019 spaceop = SS_BLOCKS;
1030 spaceop = SS_SETMARKS;
1044 nmarks = softc->filemarks;
1046 * XXX: Why are we checking again?
1048 error = sacheckeod(periph);
1051 nmarks -= softc->filemarks;
1052 error = saspace(periph, count - nmarks, spaceop);
1054 * At this point, clear that we've written the tape
1055 * and that we've written any filemarks. We really
1056 * don't know what the applications wishes to do next-
1057 * the sacheckeod's will make sure we terminated the
1058 * tape correctly if we'd been writing, but the next
1059 * action the user application takes will set again
1060 * whether we need to write filemarks.
1063 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1064 softc->filemarks = 0;
1067 case MTREW: /* rewind */
1069 error = sarewind(periph);
1072 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1073 softc->flags &= ~SA_FLAG_ERR_PENDING;
1074 softc->filemarks = 0;
1076 case MTERASE: /* erase */
1077 error = saerase(periph, count);
1079 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1080 softc->flags &= ~SA_FLAG_ERR_PENDING;
1082 case MTRETENS: /* re-tension tape */
1083 error = saretension(periph);
1085 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1086 softc->flags &= ~SA_FLAG_ERR_PENDING;
1088 case MTOFFL: /* rewind and put the drive offline */
1092 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
1093 softc->filemarks = 0;
1095 error = sarewind(periph);
1096 /* clear the frozen flag anyway */
1097 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1100 * Be sure to allow media removal before ejecting.
1103 saprevent(periph, PR_ALLOW);
1105 error = saloadunload(periph, FALSE);
1107 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1112 case MTNOP: /* no operation, sets status only */
1113 case MTCACHE: /* enable controller cache */
1114 case MTNOCACHE: /* disable controller cache */
1118 case MTSETBSIZ: /* Set block size for device */
1120 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count,
1123 softc->last_media_blksize =
1124 softc->media_blksize;
1125 softc->media_blksize = count;
1127 softc->flags |= SA_FLAG_FIXED;
1128 if (powerof2(count)) {
1131 softc->blk_mask = count - 1;
1133 softc->blk_mask = ~0;
1134 softc->blk_shift = 0;
1137 * Make the user's desire 'persistent'.
1139 softc->quirks &= ~SA_QUIRK_VARIABLE;
1140 softc->quirks |= SA_QUIRK_FIXED;
1142 softc->flags &= ~SA_FLAG_FIXED;
1143 if (softc->max_blk == 0) {
1144 softc->max_blk = ~0;
1146 softc->blk_shift = 0;
1147 if (softc->blk_gran != 0) {
1149 softc->blk_gran - 1;
1151 softc->blk_mask = 0;
1154 * Make the user's desire 'persistent'.
1156 softc->quirks |= SA_QUIRK_VARIABLE;
1157 softc->quirks &= ~SA_QUIRK_FIXED;
1161 case MTSETDNSTY: /* Set density for device and mode */
1162 if (count > UCHAR_MAX) {
1166 error = sasetparams(periph, SA_PARAM_DENSITY,
1170 case MTCOMP: /* enable compression */
1172 * Some devices don't support compression, and
1173 * don't like it if you ask them for the
1176 if ((softc->quirks & SA_QUIRK_NOCOMP) ||
1177 (softc->flags & SA_FLAG_COMP_UNSUPP)) {
1181 error = sasetparams(periph, SA_PARAM_COMPRESSION,
1182 0, 0, count, SF_NO_PRINT);
1194 error = sardpos(periph, 0, (u_int32_t *) addr);
1197 error = sardpos(periph, 1, (u_int32_t *) addr);
1200 error = sasetpos(periph, 0, (u_int32_t *) addr);
1203 error = sasetpos(periph, 1, (u_int32_t *) addr);
1205 case MTIOCGETEOTMODEL:
1207 if (softc->quirks & SA_QUIRK_1FM)
1211 *((u_int32_t *) addr) = mode;
1213 case MTIOCSETEOTMODEL:
1215 switch (*((u_int32_t *) addr)) {
1217 softc->quirks &= ~SA_QUIRK_2FM;
1218 softc->quirks |= SA_QUIRK_1FM;
1221 softc->quirks &= ~SA_QUIRK_1FM;
1222 softc->quirks |= SA_QUIRK_2FM;
1230 error = cam_periph_ioctl(periph, ap->a_cmd, addr, saerror);
1235 * Check to see if we cleared a frozen state
1237 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) {
1243 softc->fileno = (daddr_t) -1;
1244 softc->blkno = (daddr_t) -1;
1245 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1246 xpt_print_path(periph->path);
1247 kprintf("tape state now unfrozen.\n");
1253 if (didlockperiph) {
1254 cam_periph_unlock(periph);
1263 struct cam_path *path;
1266 * Create our extend array for storing the devices we attach to.
1268 saperiphs = cam_extend_new();
1269 if (saperiphs == NULL) {
1270 kprintf("sa: Failed to alloc extend array!\n");
1275 * Install a global async callback.
1277 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID,
1278 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1280 if (status == CAM_REQ_CMP) {
1281 /* Register the async callbacks of interrest */
1282 struct ccb_setasync csa; /*
1283 * This is an immediate CCB,
1284 * so using the stack is OK
1286 xpt_setup_ccb(&csa.ccb_h, path, 5);
1287 csa.ccb_h.func_code = XPT_SASYNC_CB;
1288 csa.event_enable = AC_FOUND_DEVICE;
1289 csa.callback = saasync;
1290 csa.callback_arg = NULL;
1291 xpt_action((union ccb *)&csa);
1292 status = csa.ccb_h.status;
1293 xpt_free_path(path);
1296 if (status != CAM_REQ_CMP) {
1297 kprintf("sa: Failed to attach master async callback "
1298 "due to status 0x%x!\n", status);
1303 saoninvalidate(struct cam_periph *periph)
1305 struct sa_softc *softc;
1308 struct ccb_setasync csa;
1310 softc = (struct sa_softc *)periph->softc;
1313 * De-register any async callbacks.
1315 xpt_setup_ccb(&csa.ccb_h, periph->path,
1317 csa.ccb_h.func_code = XPT_SASYNC_CB;
1318 csa.event_enable = 0;
1319 csa.callback = saasync;
1320 csa.callback_arg = periph;
1321 xpt_action((union ccb *)&csa);
1323 softc->flags |= SA_FLAG_INVALID;
1326 * We need to be in a critical section here to keep the buffer
1327 * queue from being modified while we traverse it.
1332 * Return all queued I/O with ENXIO.
1333 * XXX Handle any transactions queued to the card
1334 * with XPT_ABORT_CCB.
1336 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1337 bioq_remove(&softc->bio_queue, q_bio);
1338 q_bp = q_bio->bio_buf;
1339 q_bp->b_resid = q_bp->b_bcount;
1340 q_bp->b_error = ENXIO;
1341 q_bp->b_flags |= B_ERROR;
1344 softc->queue_count = 0;
1347 xpt_print_path(periph->path);
1348 kprintf("lost device\n");
1353 sacleanup(struct cam_periph *periph)
1355 struct sa_softc *softc;
1357 softc = (struct sa_softc *)periph->softc;
1359 devstat_remove_entry(&softc->device_stats);
1361 cam_extend_release(saperiphs, periph->unit_number);
1362 xpt_print_path(periph->path);
1363 kprintf("removing device entry\n");
1364 dev_ops_remove(&sa_ops, SA_UNITMASK, SA_UNIT(periph->unit_number));
1365 kfree(softc, M_DEVBUF);
1369 saasync(void *callback_arg, u_int32_t code,
1370 struct cam_path *path, void *arg)
1372 struct cam_periph *periph;
1374 periph = (struct cam_periph *)callback_arg;
1376 case AC_FOUND_DEVICE:
1378 struct ccb_getdev *cgd;
1381 cgd = (struct ccb_getdev *)arg;
1385 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
1389 * Allocate a peripheral instance for
1390 * this device and start the probe
1393 status = cam_periph_alloc(saregister, saoninvalidate,
1395 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path,
1396 saasync, AC_FOUND_DEVICE, cgd);
1398 if (status != CAM_REQ_CMP
1399 && status != CAM_REQ_INPROG)
1400 kprintf("saasync: Unable to probe new device "
1401 "due to status 0x%x\n", status);
1405 cam_periph_async(periph, code, path, arg);
1411 saregister(struct cam_periph *periph, void *arg)
1413 struct sa_softc *softc;
1414 struct ccb_setasync csa;
1415 struct ccb_getdev *cgd;
1419 cgd = (struct ccb_getdev *)arg;
1420 if (periph == NULL) {
1421 kprintf("saregister: periph was NULL!!\n");
1422 return (CAM_REQ_CMP_ERR);
1426 kprintf("saregister: no getdev CCB, can't register device\n");
1427 return (CAM_REQ_CMP_ERR);
1430 softc = kmalloc(sizeof (*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1431 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
1432 softc->state = SA_STATE_NORMAL;
1433 softc->fileno = (daddr_t) -1;
1434 softc->blkno = (daddr_t) -1;
1436 bioq_init(&softc->bio_queue);
1437 periph->softc = softc;
1438 cam_extend_set(saperiphs, periph->unit_number, periph);
1441 * See if this device has any quirks.
1443 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1444 (caddr_t)sa_quirk_table,
1445 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table),
1446 sizeof(*sa_quirk_table), scsi_inquiry_match);
1448 if (match != NULL) {
1449 softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
1450 softc->last_media_blksize =
1451 ((struct sa_quirk_entry *)match)->prefblk;
1453 xpt_print_path(periph->path);
1454 kprintf("found quirk entry %d\n", (int)
1455 (((struct sa_quirk_entry *) match) - sa_quirk_table));
1458 softc->quirks = SA_QUIRK_NONE;
1461 * The SA driver supports a blocksize, but we don't know the
1462 * blocksize until we media is inserted. So, set a flag to
1463 * indicate that the blocksize is unavailable right now.
1465 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0,
1466 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
1467 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE);
1469 dev_ops_add(&sa_ops, SA_UNITMASK, SA_UNIT(periph->unit_number));
1470 make_dev(&sa_ops, SAMINOR(SA_CTLDEV,
1471 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1472 0660, "%s%d.ctl", periph->periph_name, periph->unit_number);
1474 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV,
1475 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR,
1476 0660, "%s%d", periph->periph_name, periph->unit_number);
1478 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV,
1479 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR,
1480 0660, "n%s%d", periph->periph_name, periph->unit_number);
1482 make_dev(&sa_ops, SAMINOR(SA_NOT_CTLDEV,
1483 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR,
1484 0660, "e%s%d", periph->periph_name, periph->unit_number);
1486 for (i = 0; i < SA_NUM_MODES; i++) {
1489 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R),
1490 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d",
1491 periph->periph_name, periph->unit_number, i);
1494 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR),
1495 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d",
1496 periph->periph_name, periph->unit_number, i);
1500 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER),
1501 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d",
1502 periph->periph_name, periph->unit_number, i);
1506 * Add an async callback so that we get
1507 * notified if this device goes away.
1509 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5);
1510 csa.ccb_h.func_code = XPT_SASYNC_CB;
1511 csa.event_enable = AC_LOST_DEVICE;
1512 csa.callback = saasync;
1513 csa.callback_arg = periph;
1514 xpt_action((union ccb *)&csa);
1516 xpt_announce_periph(periph, NULL);
1518 return (CAM_REQ_CMP);
1522 sastart(struct cam_periph *periph, union ccb *start_ccb)
1524 struct sa_softc *softc;
1526 softc = (struct sa_softc *)periph->softc;
1528 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n"));
1531 switch (softc->state) {
1532 case SA_STATE_NORMAL:
1534 /* Pull a buffer from the queue and get going on it */
1539 * See if there is a buf with work for us to do..
1542 bio = bioq_first(&softc->bio_queue);
1543 if (periph->immediate_priority <= periph->pinfo.priority) {
1544 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1545 ("queuing for immediate ccb\n"));
1546 Set_CCB_Type(start_ccb, SA_CCB_WAITING);
1547 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1549 periph->immediate_priority = CAM_PRIORITY_NONE;
1551 wakeup(&periph->ccb_list);
1552 } else if (bio == NULL) {
1554 xpt_release_ccb(start_ccb);
1555 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) {
1556 struct bio *done_bio;
1558 softc->queue_count--;
1559 bioq_remove(&softc->bio_queue, bio);
1561 bp->b_resid = bp->b_bcount;
1563 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
1565 * We now just clear errors in this case
1566 * and let the residual be the notifier.
1569 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
1571 * This can only happen if we're reading
1572 * in fixed length mode. In this case,
1573 * we dump the rest of the list the
1577 if (bioq_first(&softc->bio_queue) != NULL) {
1581 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
1583 bp->b_flags |= B_ERROR;
1585 bio = bioq_first(&softc->bio_queue);
1587 * Only if we have no other buffers queued up
1588 * do we clear the pending error flag.
1591 softc->flags &= ~SA_FLAG_ERR_PENDING;
1592 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1593 ("sastart- ERR_PENDING now 0x%x, bio is %sNULL, "
1594 "%d more buffers queued up\n",
1595 (softc->flags & SA_FLAG_ERR_PENDING),
1596 (bio != NULL)? "not " : " ", softc->queue_count));
1598 xpt_release_ccb(start_ccb);
1603 bioq_remove(&softc->bio_queue, bio);
1605 softc->queue_count--;
1607 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1608 if (softc->blk_shift != 0) {
1610 bp->b_bcount >> softc->blk_shift;
1611 } else if (softc->media_blksize != 0) {
1613 bp->b_bcount / softc->media_blksize;
1616 xpt_print_path(periph->path);
1617 kprintf("zero blocksize for "
1618 "FIXED length writes?\n");
1624 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1625 ("issuing a %d fixed record %s\n",
1626 length, (bp->bio_cmd == BIO_READ)? "read" :
1630 length = bp->b_bcount;
1632 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
1633 ("issuing a %d variable byte %s\n",
1634 length, (bp->bio_cmd == BIO_READ)? "read" :
1638 devstat_start_transaction(&softc->device_stats);
1640 * Some people have theorized that we should
1641 * suppress illegal length indication if we are
1642 * running in variable block mode so that we don't
1643 * have to request sense every time our requested
1644 * block size is larger than the written block.
1645 * The residual information from the ccb allows
1646 * us to identify this situation anyway. The only
1647 * problem with this is that we will not get
1648 * information about blocks that are larger than
1649 * our read buffer unless we set the block size
1650 * in the mode page to something other than 0.
1652 * I believe that this is a non-issue. If user apps
1653 * don't adjust their read size to match our record
1654 * size, that's just life. Anyway, the typical usage
1655 * would be to issue, e.g., 64KB reads and occasionally
1656 * have to do deal with 512 byte or 1KB intermediate
1659 softc->dsreg = (bp->b_cmd == BUF_CMD_READ) ?
1660 MTIO_DSREG_RD : MTIO_DSREG_WR;
1661 scsi_sa_read_write(&start_ccb->csio, 0, sadone,
1662 MSG_SIMPLE_Q_TAG, (bp->b_cmd == BUF_CMD_READ) != 0,
1663 FALSE, (softc->flags & SA_FLAG_FIXED) != 0,
1664 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE,
1666 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
1667 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO);
1668 start_ccb->ccb_h.ccb_bio = bio;
1669 bio = bioq_first(&softc->bio_queue);
1671 xpt_action(start_ccb);
1675 /* Have more work to do, so ensure we stay scheduled */
1676 xpt_schedule(periph, 1);
1680 case SA_STATE_ABNORMAL:
1682 panic("state 0x%x in sastart", softc->state);
1689 sadone(struct cam_periph *periph, union ccb *done_ccb)
1691 struct sa_softc *softc;
1692 struct ccb_scsiio *csio;
1694 softc = (struct sa_softc *)periph->softc;
1695 csio = &done_ccb->csio;
1696 switch (CCB_Type(csio)) {
1697 case SA_CCB_BUFFER_IO:
1703 softc->dsreg = MTIO_DSREG_REST;
1704 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1707 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1708 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
1710 * A retry was scheduled, so just return.
1721 * Catastrophic error. Mark the tape as frozen
1722 * (we no longer know tape position).
1724 * Return all queued I/O with EIO, and unfreeze
1725 * our queue so that future transactions that
1726 * attempt to fix this problem can get to the
1732 softc->flags |= SA_FLAG_TAPE_FROZEN;
1733 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL) {
1734 bioq_remove(&softc->bio_queue, q_bio);
1735 q_bp = q_bio->bio_buf;
1736 q_bp->b_resid = q_bp->b_bcount;
1737 q_bp->b_error = EIO;
1738 q_bp->b_flags |= B_ERROR;
1744 bp->b_resid = bp->b_bcount;
1745 bp->b_error = error;
1746 bp->b_flags |= B_ERROR;
1748 * In the error case, position is updated in saerror.
1751 bp->b_resid = csio->resid;
1753 if (csio->resid != 0) {
1754 bp->b_flags |= B_ERROR;
1756 if (bp->b_cmd != BUF_CMD_READ) {
1757 softc->flags |= SA_FLAG_TAPE_WRITTEN;
1758 softc->filemarks = 0;
1760 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
1761 (softc->blkno != (daddr_t) -1)) {
1762 if ((softc->flags & SA_FLAG_FIXED) != 0) {
1764 if (softc->blk_shift != 0) {
1769 softc->media_blksize;
1771 softc->blkno += (daddr_t) l;
1778 * If we had an error (immediate or pending),
1779 * release the device queue now.
1781 if (error || (softc->flags & SA_FLAG_ERR_PENDING))
1782 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
1784 if (error || bp->b_resid) {
1785 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1786 ("error %d resid %d count %d\n", error,
1787 bp->b_resid, bp->b_bcount));
1790 devstat_end_transaction_buf(&softc->device_stats, bp);
1794 case SA_CCB_WAITING:
1796 /* Caller will release the CCB */
1797 wakeup(&done_ccb->ccb_h.cbfcnp);
1801 xpt_release_ccb(done_ccb);
1805 * Mount the tape (make sure it's ready for I/O).
1808 samount(struct cam_periph *periph, int oflags, cdev_t dev)
1810 struct sa_softc *softc;
1815 * oflags can be checked for 'kind' of open (read-only check) - later
1816 * dev can be checked for a control-mode or compression open - later
1818 UNUSED_PARAMETER(oflags);
1819 UNUSED_PARAMETER(dev);
1822 softc = (struct sa_softc *)periph->softc;
1825 * This should determine if something has happend since the last
1826 * open/mount that would invalidate the mount. We do *not* want
1827 * to retry this command- we just want the status. But we only
1828 * do this if we're mounted already- if we're not mounted,
1829 * we don't care about the unit read state and can instead use
1830 * this opportunity to attempt to reserve the tape unit.
1833 if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
1834 ccb = cam_periph_getccb(periph, 1);
1835 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1836 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1837 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1838 &softc->device_stats);
1840 if (error == ENXIO) {
1841 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1842 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1843 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1844 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1845 &softc->device_stats);
1849 * We don't need to freeze the tape because we
1850 * will now attempt to rewind/load it.
1852 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1853 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
1854 xpt_print_path(periph->path);
1855 kprintf("error %d on TUR in samount\n", error);
1859 error = sareservereleaseunit(periph, TRUE);
1863 ccb = cam_periph_getccb(periph, 1);
1864 scsi_test_unit_ready(&ccb->csio, 0, sadone,
1865 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
1866 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1867 &softc->device_stats);
1871 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
1872 struct scsi_read_block_limits_data *rblim = NULL;
1873 int comp_enabled, comp_supported;
1874 u_int8_t write_protect, guessing = 0;
1877 * Clear out old state.
1879 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
1880 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED|
1881 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP);
1882 softc->filemarks = 0;
1885 * *Very* first off, make sure we're loaded to BOT.
1887 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
1888 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
1889 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1890 &softc->device_stats);
1894 * In case this doesn't work, do a REWIND instead
1897 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
1898 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1899 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1900 &softc->device_stats);
1904 xpt_release_ccb(ccb);
1909 * Do a dummy test read to force access to the
1910 * media so that the drive will really know what's
1911 * there. We actually don't really care what the
1912 * blocksize on tape is and don't expect to really
1913 * read a full record.
1915 rblim = kmalloc(8192, M_TEMP, M_INTWAIT);
1917 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
1918 scsi_sa_read_write(&ccb->csio, 0, sadone,
1919 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
1920 (void *) rblim, 8192, SSD_FULL_SIZE,
1922 cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
1923 &softc->device_stats);
1925 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
1926 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
1927 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
1928 SF_NO_PRINT | SF_RETRY_UA,
1929 &softc->device_stats);
1932 xpt_print_path(periph->path);
1933 kprintf("unable to rewind after test read\n");
1934 xpt_release_ccb(ccb);
1940 * Next off, determine block limits.
1942 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
1943 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
1945 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
1946 SF_NO_PRINT | SF_RETRY_UA, &softc->device_stats);
1949 xpt_release_ccb(ccb);
1953 * If it's less than SCSI-2, READ BLOCK LIMITS is not
1954 * a MANDATORY command. Anyway- it doesn't matter-
1955 * we can proceed anyway.
1957 softc->blk_gran = 0;
1958 softc->max_blk = ~0;
1961 if (softc->scsi_rev >= SCSI_REV_SPC) {
1962 softc->blk_gran = RBL_GRAN(rblim);
1964 softc->blk_gran = 0;
1967 * We take max_blk == min_blk to mean a default to
1968 * fixed mode- but note that whatever we get out of
1969 * sagetparams below will actually determine whether
1970 * we are actually *in* fixed mode.
1972 softc->max_blk = scsi_3btoul(rblim->maximum);
1973 softc->min_blk = scsi_2btoul(rblim->minimum);
1978 * Next, perform a mode sense to determine
1979 * current density, blocksize, compression etc.
1981 error = sagetparams(periph, SA_PARAM_ALL,
1982 &softc->media_blksize,
1983 &softc->media_density,
1984 &softc->media_numblks,
1985 &softc->buffer_mode, &write_protect,
1986 &softc->speed, &comp_supported,
1987 &comp_enabled, &softc->comp_algorithm,
1992 * We could work a little harder here. We could
1993 * adjust our attempts to get information. It
1994 * might be an ancient tape drive. If someone
1995 * nudges us, we'll do that.
2001 * If no quirk has determined that this is a device that is
2002 * preferred to be in fixed or variable mode, now is the time
2005 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
2008 * This could be expensive to find out. Luckily we
2009 * only need to do this once. If we start out in
2010 * 'default' mode, try and set ourselves to one
2011 * of the densities that would determine a wad
2012 * of other stuff. Go from highest to lowest.
2014 if (softc->media_density == SCSI_DEFAULT_DENSITY) {
2016 static u_int8_t ctry[] = {
2017 SCSI_DENSITY_HALFINCH_PE,
2018 SCSI_DENSITY_HALFINCH_6250C,
2019 SCSI_DENSITY_HALFINCH_6250,
2020 SCSI_DENSITY_HALFINCH_1600,
2021 SCSI_DENSITY_HALFINCH_800,
2022 SCSI_DENSITY_QIC_4GB,
2023 SCSI_DENSITY_QIC_2GB,
2024 SCSI_DENSITY_QIC_525_320,
2025 SCSI_DENSITY_QIC_150,
2026 SCSI_DENSITY_QIC_120,
2027 SCSI_DENSITY_QIC_24,
2028 SCSI_DENSITY_QIC_11_9TRK,
2029 SCSI_DENSITY_QIC_11_4TRK,
2030 SCSI_DENSITY_QIC_1320,
2031 SCSI_DENSITY_QIC_3080,
2034 for (i = 0; ctry[i]; i++) {
2035 error = sasetparams(periph,
2036 SA_PARAM_DENSITY, 0, ctry[i],
2039 softc->media_density = ctry[i];
2044 switch (softc->media_density) {
2045 case SCSI_DENSITY_QIC_11_4TRK:
2046 case SCSI_DENSITY_QIC_11_9TRK:
2047 case SCSI_DENSITY_QIC_24:
2048 case SCSI_DENSITY_QIC_120:
2049 case SCSI_DENSITY_QIC_150:
2050 case SCSI_DENSITY_QIC_525_320:
2051 case SCSI_DENSITY_QIC_1320:
2052 case SCSI_DENSITY_QIC_3080:
2053 softc->quirks &= ~SA_QUIRK_2FM;
2054 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2055 softc->last_media_blksize = 512;
2057 case SCSI_DENSITY_QIC_4GB:
2058 case SCSI_DENSITY_QIC_2GB:
2059 softc->quirks &= ~SA_QUIRK_2FM;
2060 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
2061 softc->last_media_blksize = 1024;
2064 softc->last_media_blksize =
2065 softc->media_blksize;
2066 softc->quirks |= SA_QUIRK_VARIABLE;
2072 * If no quirk has determined that this is a device that needs
2073 * to have 2 Filemarks at EOD, now is the time to find out.
2076 if ((softc->quirks & SA_QUIRK_2FM) == 0) {
2077 switch (softc->media_density) {
2078 case SCSI_DENSITY_HALFINCH_800:
2079 case SCSI_DENSITY_HALFINCH_1600:
2080 case SCSI_DENSITY_HALFINCH_6250:
2081 case SCSI_DENSITY_HALFINCH_6250C:
2082 case SCSI_DENSITY_HALFINCH_PE:
2083 softc->quirks &= ~SA_QUIRK_1FM;
2084 softc->quirks |= SA_QUIRK_2FM;
2092 * Now validate that some info we got makes sense.
2094 if ((softc->max_blk < softc->media_blksize) ||
2095 (softc->min_blk > softc->media_blksize &&
2096 softc->media_blksize)) {
2097 xpt_print_path(periph->path);
2098 kprintf("BLOCK LIMITS (%d..%d) could not match current "
2099 "block settings (%d)- adjusting\n", softc->min_blk,
2100 softc->max_blk, softc->media_blksize);
2101 softc->max_blk = softc->min_blk =
2102 softc->media_blksize;
2106 * Now put ourselves into the right frame of mind based
2111 * If we want to be in FIXED mode and our current blocksize
2112 * is not equal to our last blocksize (if nonzero), try and
2113 * set ourselves to this last blocksize (as the 'preferred'
2114 * block size). The initial quirkmatch at registry sets the
2115 * initial 'last' blocksize. If, for whatever reason, this
2116 * 'last' blocksize is zero, set the blocksize to 512,
2117 * or min_blk if that's larger.
2119 if ((softc->quirks & SA_QUIRK_FIXED) &&
2120 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
2121 (softc->media_blksize != softc->last_media_blksize)) {
2122 softc->media_blksize = softc->last_media_blksize;
2123 if (softc->media_blksize == 0) {
2124 softc->media_blksize = 512;
2125 if (softc->media_blksize < softc->min_blk) {
2126 softc->media_blksize = softc->min_blk;
2129 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2130 softc->media_blksize, 0, 0, SF_NO_PRINT);
2132 xpt_print_path(periph->path);
2133 kprintf("unable to set fixed blocksize to %d\n",
2134 softc->media_blksize);
2139 if ((softc->quirks & SA_QUIRK_VARIABLE) &&
2140 (softc->media_blksize != 0)) {
2141 softc->last_media_blksize = softc->media_blksize;
2142 softc->media_blksize = 0;
2143 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
2144 0, 0, 0, SF_NO_PRINT);
2147 * If this fails and we were guessing, just
2148 * assume that we got it wrong and go try
2149 * fixed block mode. Don't even check against
2150 * density code at this point.
2153 softc->quirks &= ~SA_QUIRK_VARIABLE;
2154 softc->quirks |= SA_QUIRK_FIXED;
2155 if (softc->last_media_blksize == 0)
2156 softc->last_media_blksize = 512;
2159 xpt_print_path(periph->path);
2160 kprintf("unable to set variable blocksize\n");
2166 * Now that we have the current block size,
2167 * set up some parameters for sastart's usage.
2169 if (softc->media_blksize) {
2170 softc->flags |= SA_FLAG_FIXED;
2171 if (powerof2(softc->media_blksize)) {
2173 ffs(softc->media_blksize) - 1;
2174 softc->blk_mask = softc->media_blksize - 1;
2176 softc->blk_mask = ~0;
2177 softc->blk_shift = 0;
2181 * The SCSI-3 spec allows 0 to mean "unspecified".
2182 * The SCSI-1 spec allows 0 to mean 'infinite'.
2184 * Either works here.
2186 if (softc->max_blk == 0) {
2187 softc->max_blk = ~0;
2189 softc->blk_shift = 0;
2190 if (softc->blk_gran != 0) {
2191 softc->blk_mask = softc->blk_gran - 1;
2193 softc->blk_mask = 0;
2198 softc->flags |= SA_FLAG_TAPE_WP;
2200 if (comp_supported) {
2201 if (softc->saved_comp_algorithm == 0)
2202 softc->saved_comp_algorithm =
2203 softc->comp_algorithm;
2204 softc->flags |= SA_FLAG_COMP_SUPP;
2206 softc->flags |= SA_FLAG_COMP_ENABLED;
2208 softc->flags |= SA_FLAG_COMP_UNSUPP;
2210 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
2211 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
2212 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
2215 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
2217 xpt_print_path(periph->path);
2218 kprintf("unable to set buffered mode\n");
2220 error = 0; /* not an error */
2225 softc->flags |= SA_FLAG_TAPE_MOUNTED;
2229 kfree(rblim, M_TEMP);
2232 softc->dsreg = MTIO_DSREG_NIL;
2234 softc->fileno = softc->blkno = 0;
2235 softc->dsreg = MTIO_DSREG_REST;
2237 #ifdef SA_1FM_AT_EOD
2238 if ((softc->quirks & SA_QUIRK_2FM) == 0)
2239 softc->quirks |= SA_QUIRK_1FM;
2241 if ((softc->quirks & SA_QUIRK_1FM) == 0)
2242 softc->quirks |= SA_QUIRK_2FM;
2245 xpt_release_ccb(ccb);
2248 * If we return an error, we're not mounted any more,
2249 * so release any device reservation.
2252 sareservereleaseunit(periph, FALSE);
2255 * Clear I/O residual.
2257 softc->last_io_resid = 0;
2258 softc->last_ctl_resid = 0;
2264 * How many filemarks do we need to write if we were to terminate the
2265 * tape session right now? Note that this can be a negative number
2269 samarkswanted(struct cam_periph *periph)
2272 struct sa_softc *softc;
2274 softc = (struct sa_softc *)periph->softc;
2276 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
2278 if (softc->quirks & SA_QUIRK_2FM)
2281 markswanted -= softc->filemarks;
2282 return (markswanted);
2286 sacheckeod(struct cam_periph *periph)
2291 markswanted = samarkswanted(periph);
2293 if (markswanted > 0) {
2294 error = sawritefilemarks(periph, markswanted, FALSE);
2302 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
2304 static const char *toobig =
2305 "%d-byte tape record bigger than supplied buffer\n";
2306 struct cam_periph *periph;
2307 struct sa_softc *softc;
2308 struct ccb_scsiio *csio;
2309 struct scsi_sense_data *sense;
2310 u_int32_t resid = 0;
2313 int error_code, sense_key, asc, ascq, error, aqvalid;
2315 periph = xpt_path_periph(ccb->ccb_h.path);
2316 softc = (struct sa_softc *)periph->softc;
2318 sense = &csio->sense_data;
2319 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq);
2320 aqvalid = sense->extra_len >= 6;
2323 status = csio->ccb_h.status & CAM_STATUS_MASK;
2326 * Calculate/latch up, any residuals... We do this in a funny 2-step
2327 * so we can print stuff here if we have CAM_DEBUG enabled for this
2330 if (status == CAM_SCSI_STATUS_ERROR) {
2331 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) {
2332 info = (int32_t) scsi_4btoul(sense->info);
2334 if ((softc->flags & SA_FLAG_FIXED) != 0)
2335 resid *= softc->media_blksize;
2337 resid = csio->dxfer_len;
2339 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2340 if (softc->media_blksize)
2341 info /= softc->media_blksize;
2344 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) {
2345 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
2346 sizeof (struct scsi_sense_data));
2347 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
2348 (int) csio->cdb_len);
2349 softc->last_io_resid = resid;
2350 softc->last_resid_was_io = 1;
2352 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
2353 sizeof (struct scsi_sense_data));
2354 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
2355 (int) csio->cdb_len);
2356 softc->last_ctl_resid = resid;
2357 softc->last_resid_was_io = 0;
2359 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
2360 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d "
2361 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
2362 sense_key, asc, ascq, status,
2363 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len));
2365 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2366 ("Cam Status 0x%x\n", status));
2372 case CAM_SCSI_STATUS_ERROR:
2374 * If a read/write command, we handle it here.
2376 if (CCB_Type(csio) != SA_CCB_WAITING) {
2380 * If this was just EOM/EOP, Filemark, Setmark or ILI detected
2381 * on a non read/write command, we assume it's not an error
2382 * and propagate the residule and return.
2384 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) ||
2385 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
2386 csio->resid = resid;
2391 * Otherwise, we let the common code handle this.
2393 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2397 * We cannot depend upon CAM honoring retry counts for these.
2399 case CAM_SCSI_BUS_RESET:
2401 if (ccb->ccb_h.retry_count <= 0) {
2406 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb));
2410 * Handle filemark, end of tape, mismatched record sizes....
2411 * From this point out, we're only handling read/write cases.
2412 * Handle writes && reads differently.
2415 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
2416 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
2417 csio->resid = resid;
2419 } else if (sense->flags & SSD_EOM) {
2420 softc->flags |= SA_FLAG_EOM_PENDING;
2422 * Grotesque as it seems, the few times
2423 * I've actually seen a non-zero resid,
2424 * the tape drive actually lied and had
2425 * written all the data!.
2430 csio->resid = resid;
2431 if (sense_key == SSD_KEY_BLANK_CHECK) {
2432 if (softc->quirks & SA_QUIRK_1FM) {
2434 softc->flags |= SA_FLAG_EOM_PENDING;
2438 } else if (sense->flags & SSD_FILEMARK) {
2439 if (softc->flags & SA_FLAG_FIXED) {
2441 softc->flags |= SA_FLAG_EOF_PENDING;
2444 * Unconditionally, if we detected a filemark on a read,
2445 * mark that we've run moved a file ahead.
2447 if (softc->fileno != (daddr_t) -1) {
2450 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
2456 * Incorrect Length usually applies to read, but can apply to writes.
2458 if (error == 0 && (sense->flags & SSD_ILI)) {
2460 xpt_print_path(csio->ccb_h.path);
2461 kprintf(toobig, csio->dxfer_len - info);
2462 csio->resid = csio->dxfer_len;
2465 csio->resid = resid;
2466 if (softc->flags & SA_FLAG_FIXED) {
2467 softc->flags |= SA_FLAG_EIO_PENDING;
2470 * Bump the block number if we hadn't seen a filemark.
2471 * Do this independent of errors (we've moved anyway).
2473 if ((sense->flags & SSD_FILEMARK) == 0) {
2474 if (softc->blkno != (daddr_t) -1) {
2476 csio->ccb_h.ccb_pflags |=
2477 SA_POSITION_UPDATED;
2485 * Unfreeze the queue if frozen as we're not returning anything
2486 * to our waiters that would indicate an I/O error has occurred
2496 sagetparams(struct cam_periph *periph, sa_params params_to_get,
2497 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
2498 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
2499 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
2504 struct scsi_mode_header_6 *mode_hdr;
2505 struct scsi_mode_blk_desc *mode_blk;
2506 int mode_buffer_len;
2507 struct sa_softc *softc;
2512 softc = (struct sa_softc *)periph->softc;
2513 ccb = cam_periph_getccb(periph, 1);
2514 if (softc->quirks & SA_QUIRK_NO_CPAGE)
2515 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2517 cpage = SA_DATA_COMPRESSION_PAGE;
2520 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2522 if (params_to_get & SA_PARAM_COMPRESSION) {
2523 if (softc->quirks & SA_QUIRK_NOCOMP) {
2524 *comp_supported = FALSE;
2525 params_to_get &= ~SA_PARAM_COMPRESSION;
2527 mode_buffer_len += sizeof (sa_comp_t);
2530 mode_buffer = kmalloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO);
2531 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2532 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2534 /* it is safe to retry this */
2535 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2536 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
2537 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
2538 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2540 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2541 &softc->device_stats);
2544 status = ccb->ccb_h.status & CAM_STATUS_MASK;
2546 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
2548 * Hmm. Let's see if we can try another page...
2549 * If we've already done that, give up on compression
2550 * for this device and remember this for the future
2551 * and attempt the request without asking for compression
2554 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2555 cpage = SA_DEVICE_CONFIGURATION_PAGE;
2558 softc->quirks |= SA_QUIRK_NOCOMP;
2559 kfree(mode_buffer, M_TEMP);
2561 } else if (status == CAM_SCSI_STATUS_ERROR) {
2562 /* Tell the user about the fatal error. */
2563 scsi_sense_print(&ccb->csio);
2564 goto sagetparamsexit;
2568 * If the user only wants the compression information, and
2569 * the device doesn't send back the block descriptor, it's
2570 * no big deal. If the user wants more than just
2571 * compression, though, and the device doesn't pass back the
2572 * block descriptor, we need to send another mode sense to
2573 * get the block descriptor.
2575 if ((mode_hdr->blk_desc_len == 0) &&
2576 (params_to_get & SA_PARAM_COMPRESSION) &&
2577 (params_to_get & ~(SA_PARAM_COMPRESSION))) {
2580 * Decrease the mode buffer length by the size of
2581 * the compression page, to make sure the data
2582 * there doesn't get overwritten.
2584 mode_buffer_len -= sizeof (sa_comp_t);
2587 * Now move the compression page that we presumably
2588 * got back down the memory chunk a little bit so
2589 * it doesn't get spammed.
2591 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
2592 bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
2595 * Now, we issue another mode sense and just ask
2596 * for the block descriptor, etc.
2599 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
2600 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
2601 mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
2604 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2605 &softc->device_stats);
2609 goto sagetparamsexit;
2612 if (params_to_get & SA_PARAM_BLOCKSIZE)
2613 *blocksize = scsi_3btoul(mode_blk->blklen);
2615 if (params_to_get & SA_PARAM_NUMBLOCKS)
2616 *numblocks = scsi_3btoul(mode_blk->nblocks);
2618 if (params_to_get & SA_PARAM_BUFF_MODE)
2619 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
2621 if (params_to_get & SA_PARAM_DENSITY)
2622 *density = mode_blk->density;
2624 if (params_to_get & SA_PARAM_WP)
2625 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
2627 if (params_to_get & SA_PARAM_SPEED)
2628 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
2630 if (params_to_get & SA_PARAM_COMPRESSION) {
2631 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
2632 if (cpage == SA_DATA_COMPRESSION_PAGE) {
2633 struct scsi_data_compression_page *cp = &ntcs->dcomp;
2635 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
2637 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
2638 *comp_algorithm = scsi_4btoul(cp->comp_algorithm);
2640 struct scsi_dev_conf_page *cp = &ntcs->dconf;
2642 * We don't really know whether this device supports
2643 * Data Compression if the the algorithm field is
2644 * zero. Just say we do.
2646 *comp_supported = TRUE;
2648 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
2649 *comp_algorithm = cp->sel_comp_alg;
2652 bcopy(ntcs, tcs, sizeof (sa_comp_t));
2655 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2657 char *xyz = mode_buffer;
2658 xpt_print_path(periph->path);
2659 kprintf("Mode Sense Data=");
2660 for (idx = 0; idx < mode_buffer_len; idx++)
2661 kprintf(" 0x%02x", xyz[idx] & 0xff);
2667 xpt_release_ccb(ccb);
2668 kfree(mode_buffer, M_TEMP);
2673 * The purpose of this function is to set one of four different parameters
2677 * - compression / compression algorithm
2680 * The assumption is that this will be called from saioctl(), and therefore
2681 * from a process context. Thus the waiting malloc calls below. If that
2682 * assumption ever changes, the malloc calls should be changed to be
2685 * Any or all of the four parameters may be set when this function is
2686 * called. It should handle setting more than one parameter at once.
2689 sasetparams(struct cam_periph *periph, sa_params params_to_set,
2690 u_int32_t blocksize, u_int8_t density, u_int32_t calg,
2691 u_int32_t sense_flags)
2693 struct sa_softc *softc;
2694 u_int32_t current_blocksize;
2695 u_int32_t current_calg;
2696 u_int8_t current_density;
2697 u_int8_t current_speed;
2698 int comp_enabled, comp_supported;
2700 int mode_buffer_len;
2701 struct scsi_mode_header_6 *mode_hdr;
2702 struct scsi_mode_blk_desc *mode_blk;
2703 sa_comp_t *ccomp, *cpage;
2705 union ccb *ccb = NULL;
2708 softc = (struct sa_softc *)periph->softc;
2710 ccomp = kmalloc(sizeof (sa_comp_t), M_TEMP, M_INTWAIT);
2713 * Since it doesn't make sense to set the number of blocks, or
2714 * write protection, we won't try to get the current value. We
2715 * always want to get the blocksize, so we can set it back to the
2718 error = sagetparams(periph,
2719 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED,
2720 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL,
2721 ¤t_speed, &comp_supported, &comp_enabled,
2722 ¤t_calg, ccomp);
2725 kfree(ccomp, M_TEMP);
2729 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
2730 if (params_to_set & SA_PARAM_COMPRESSION)
2731 mode_buffer_len += sizeof (sa_comp_t);
2733 mode_buffer = kmalloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO);
2735 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
2736 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2738 ccb = cam_periph_getccb(periph, 1);
2742 if (params_to_set & SA_PARAM_COMPRESSION) {
2744 cpage = (sa_comp_t *)&mode_blk[1];
2746 cpage = (sa_comp_t *)&mode_hdr[1];
2748 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2749 cpage->hdr.pagecode &= ~0x80;
2754 * If the caller wants us to set the blocksize, use the one they
2755 * pass in. Otherwise, use the blocksize we got back from the
2756 * mode select above.
2759 if (params_to_set & SA_PARAM_BLOCKSIZE)
2760 scsi_ulto3b(blocksize, mode_blk->blklen);
2762 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2765 * Set density if requested, else preserve old density.
2766 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2767 * devices, else density we've latched up in our softc.
2769 if (params_to_set & SA_PARAM_DENSITY) {
2770 mode_blk->density = density;
2771 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2772 mode_blk->density = SCSI_SAME_DENSITY;
2774 mode_blk->density = softc->media_density;
2779 * For mode selects, these two fields must be zero.
2781 mode_hdr->data_length = 0;
2782 mode_hdr->medium_type = 0;
2784 /* set the speed to the current value */
2785 mode_hdr->dev_spec = current_speed;
2787 /* if set, set single-initiator buffering mode */
2788 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) {
2789 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
2793 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
2795 mode_hdr->blk_desc_len = 0;
2798 * First, if the user wants us to set the compression algorithm or
2799 * just turn compression on, check to make sure that this drive
2800 * supports compression.
2802 if (params_to_set & SA_PARAM_COMPRESSION) {
2804 * If the compression algorithm is 0, disable compression.
2805 * If the compression algorithm is non-zero, enable
2806 * compression and set the compression type to the
2807 * specified compression algorithm, unless the algorithm is
2808 * MT_COMP_ENABLE. In that case, we look at the
2809 * compression algorithm that is currently set and if it is
2810 * non-zero, we leave it as-is. If it is zero, and we have
2811 * saved a compression algorithm from a time when
2812 * compression was enabled before, set the compression to
2815 switch (ccomp->hdr.pagecode & ~0x80) {
2816 case SA_DEVICE_CONFIGURATION_PAGE:
2818 struct scsi_dev_conf_page *dcp = &cpage->dconf;
2820 dcp->sel_comp_alg = SA_COMP_NONE;
2823 if (calg != MT_COMP_ENABLE) {
2824 dcp->sel_comp_alg = calg;
2825 } else if (dcp->sel_comp_alg == SA_COMP_NONE &&
2826 softc->saved_comp_algorithm != 0) {
2827 dcp->sel_comp_alg = softc->saved_comp_algorithm;
2831 case SA_DATA_COMPRESSION_PAGE:
2832 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
2833 struct scsi_data_compression_page *dcp = &cpage->dcomp;
2836 * Disable compression, but leave the
2837 * decompression and the capability bit
2840 dcp->dce_and_dcc = SA_DCP_DCC;
2841 dcp->dde_and_red |= SA_DCP_DDE;
2844 /* enable compression && decompression */
2845 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
2846 dcp->dde_and_red |= SA_DCP_DDE;
2848 * If there, use compression algorithm from caller.
2849 * Otherwise, if there's a saved compression algorithm
2850 * and there is no current algorithm, use the saved
2851 * algorithm. Else parrot back what we got and hope
2854 if (calg != MT_COMP_ENABLE) {
2855 scsi_ulto4b(calg, dcp->comp_algorithm);
2856 scsi_ulto4b(calg, dcp->decomp_algorithm);
2857 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
2858 softc->saved_comp_algorithm != 0) {
2859 scsi_ulto4b(softc->saved_comp_algorithm,
2860 dcp->comp_algorithm);
2861 scsi_ulto4b(softc->saved_comp_algorithm,
2862 dcp->decomp_algorithm);
2867 * Compression does not appear to be supported-
2868 * at least via the DATA COMPRESSION page. It
2869 * would be too much to ask us to believe that
2870 * the page itself is supported, but incorrectly
2871 * reports an ability to manipulate data compression,
2872 * so we'll assume that this device doesn't support
2873 * compression. We can just fall through for that.
2878 * The drive doesn't seem to support compression,
2879 * so turn off the set compression bit.
2881 params_to_set &= ~SA_PARAM_COMPRESSION;
2882 xpt_print_path(periph->path);
2883 kprintf("device does not seem to support compression\n");
2886 * If that was the only thing the user wanted us to set,
2887 * clean up allocated resources and return with
2888 * 'operation not supported'.
2890 if (params_to_set == SA_PARAM_NONE) {
2891 kfree(mode_buffer, M_TEMP);
2892 xpt_release_ccb(ccb);
2897 * That wasn't the only thing the user wanted us to set.
2898 * So, decrease the stated mode buffer length by the
2899 * size of the compression mode page.
2901 mode_buffer_len -= sizeof(sa_comp_t);
2905 /* It is safe to retry this operation */
2906 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG,
2907 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
2908 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
2910 error = cam_periph_runccb(ccb, saerror, 0,
2911 sense_flags, &softc->device_stats);
2914 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2916 char *xyz = mode_buffer;
2917 xpt_print_path(periph->path);
2918 kprintf("Err%d, Mode Select Data=", error);
2919 for (idx = 0; idx < mode_buffer_len; idx++)
2920 kprintf(" 0x%02x", xyz[idx] & 0xff);
2927 * If we can, try without setting density/blocksize.
2930 if ((params_to_set &
2931 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
2936 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
2937 cpage = (sa_comp_t *)&mode_blk[1];
2941 * If we were setting the blocksize, and that failed, we
2942 * want to set it to its original value. If we weren't
2943 * setting the blocksize, we don't want to change it.
2945 scsi_ulto3b(current_blocksize, mode_blk->blklen);
2948 * Set density if requested, else preserve old density.
2949 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
2950 * devices, else density we've latched up in our softc.
2952 if (params_to_set & SA_PARAM_DENSITY) {
2953 mode_blk->density = current_density;
2954 } else if (softc->scsi_rev > SCSI_REV_CCS) {
2955 mode_blk->density = SCSI_SAME_DENSITY;
2957 mode_blk->density = softc->media_density;
2960 if (params_to_set & SA_PARAM_COMPRESSION)
2961 bcopy(ccomp, cpage, sizeof (sa_comp_t));
2964 * The retry count is the only CCB field that might have been
2965 * changed that we care about, so reset it back to 1.
2967 ccb->ccb_h.retry_count = 1;
2968 cam_periph_runccb(ccb, saerror, 0, sense_flags,
2969 &softc->device_stats);
2973 xpt_release_ccb(ccb);
2976 kfree(ccomp, M_TEMP);
2978 if (params_to_set & SA_PARAM_COMPRESSION) {
2980 softc->flags &= ~SA_FLAG_COMP_ENABLED;
2982 * Even if we get an error setting compression,
2983 * do not say that we don't support it. We could
2984 * have been wrong, or it may be media specific.
2985 * softc->flags &= ~SA_FLAG_COMP_SUPP;
2987 softc->saved_comp_algorithm = softc->comp_algorithm;
2988 softc->comp_algorithm = 0;
2990 softc->flags |= SA_FLAG_COMP_ENABLED;
2991 softc->comp_algorithm = calg;
2995 kfree(mode_buffer, M_TEMP);
3000 saprevent(struct cam_periph *periph, int action)
3002 struct sa_softc *softc;
3006 softc = (struct sa_softc *)periph->softc;
3008 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
3010 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
3014 * We can be quiet about illegal requests.
3016 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
3021 ccb = cam_periph_getccb(periph, 1);
3023 /* It is safe to retry this operation */
3024 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action,
3025 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3027 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats);
3030 if (action == PR_ALLOW)
3031 softc->flags &= ~SA_FLAG_TAPE_LOCKED;
3033 softc->flags |= SA_FLAG_TAPE_LOCKED;
3036 xpt_release_ccb(ccb);
3040 sarewind(struct cam_periph *periph)
3043 struct sa_softc *softc;
3046 softc = (struct sa_softc *)periph->softc;
3048 ccb = cam_periph_getccb(periph, 1);
3050 /* It is safe to retry this operation */
3051 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3052 SSD_FULL_SIZE, REWIND_TIMEOUT);
3054 softc->dsreg = MTIO_DSREG_REW;
3055 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3056 softc->dsreg = MTIO_DSREG_REST;
3058 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3059 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3061 xpt_release_ccb(ccb);
3063 softc->fileno = softc->blkno = (daddr_t) 0;
3065 softc->fileno = softc->blkno = (daddr_t) -1;
3070 saspace(struct cam_periph *periph, int count, scsi_space_code code)
3073 struct sa_softc *softc;
3076 softc = (struct sa_softc *)periph->softc;
3078 ccb = cam_periph_getccb(periph, 1);
3080 /* This cannot be retried */
3082 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count,
3083 SSD_FULL_SIZE, SPACE_TIMEOUT);
3086 * Clear residual because we will be using it.
3088 softc->last_ctl_resid = 0;
3090 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
3091 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3092 softc->dsreg = MTIO_DSREG_REST;
3094 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3095 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3097 xpt_release_ccb(ccb);
3100 * If a spacing operation has failed, we need to invalidate
3103 * If the spacing operation was setmarks or to end of recorded data,
3104 * we no longer know our relative position.
3106 * If the spacing operations was spacing files in reverse, we
3107 * take account of the residual, but still check against less
3108 * than zero- if we've gone negative, we must have hit BOT.
3110 * If the spacing operations was spacing records in reverse and
3111 * we have a residual, we've either hit BOT or hit a filemark.
3112 * In the former case, we know our new record number (0). In
3113 * the latter case, we have absolutely no idea what the real
3114 * record number is- we've stopped between the end of the last
3115 * record in the previous file and the filemark that stopped
3116 * our spacing backwards.
3119 softc->fileno = softc->blkno = (daddr_t) -1;
3120 } else if (code == SS_SETMARKS || code == SS_EOD) {
3121 softc->fileno = softc->blkno = (daddr_t) -1;
3122 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
3123 softc->fileno += (count - softc->last_ctl_resid);
3124 if (softc->fileno < 0) /* we must of hit BOT */
3127 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
3128 softc->blkno += (count - softc->last_ctl_resid);
3130 if (softc->last_ctl_resid || softc->blkno < 0) {
3131 if (softc->fileno == 0) {
3134 softc->blkno = (daddr_t) -1;
3143 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks)
3146 struct sa_softc *softc;
3149 softc = (struct sa_softc *)periph->softc;
3151 ccb = cam_periph_getccb(periph, 1);
3153 * Clear residual because we will be using it.
3155 softc->last_ctl_resid = 0;
3157 softc->dsreg = MTIO_DSREG_FMK;
3158 /* this *must* not be retried */
3159 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG,
3160 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
3161 softc->dsreg = MTIO_DSREG_REST;
3164 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3166 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3167 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3169 if (error == 0 && nmarks) {
3170 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3171 nwm = nmarks - softc->last_ctl_resid;
3172 softc->filemarks += nwm;
3175 xpt_release_ccb(ccb);
3178 * Update relative positions (if we're doing that).
3181 softc->fileno = softc->blkno = (daddr_t) -1;
3182 } else if (softc->fileno != (daddr_t) -1) {
3183 softc->fileno += nwm;
3190 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3192 struct scsi_tape_position_data loc;
3194 struct sa_softc *softc = (struct sa_softc *)periph->softc;
3198 * We try and flush any buffered writes here if we were writing
3199 * and we're trying to get hardware block position. It eats
3200 * up performance substantially, but I'm wary of drive firmware.
3202 * I think that *logical* block position is probably okay-
3203 * but hardware block position might have to wait for data
3204 * to hit media to be valid. Caveat Emptor.
3207 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
3208 error = sawritefilemarks(periph, 0, 0);
3209 if (error && error != EACCES)
3213 ccb = cam_periph_getccb(periph, 1);
3214 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3215 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3216 softc->dsreg = MTIO_DSREG_RBSY;
3217 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3218 softc->dsreg = MTIO_DSREG_REST;
3219 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3220 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0);
3223 if (loc.flags & SA_RPOS_UNCERTAIN) {
3224 error = EINVAL; /* nothing is certain */
3226 *blkptr = scsi_4btoul(loc.firstblk);
3230 xpt_release_ccb(ccb);
3235 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
3238 struct sa_softc *softc;
3242 * We used to try and flush any buffered writes here.
3243 * Now we push this onto user applications to either
3244 * flush the pending writes themselves (via a zero count
3245 * WRITE FILEMARKS command) or they can trust their tape
3246 * drive to do this correctly for them.
3249 softc = (struct sa_softc *)periph->softc;
3250 ccb = cam_periph_getccb(periph, 1);
3253 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG,
3254 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT);
3257 softc->dsreg = MTIO_DSREG_POS;
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);
3262 xpt_release_ccb(ccb);
3264 * Note relative file && block number position as now unknown.
3266 softc->fileno = softc->blkno = (daddr_t) -1;
3271 saretension(struct cam_periph *periph)
3274 struct sa_softc *softc;
3277 softc = (struct sa_softc *)periph->softc;
3279 ccb = cam_periph_getccb(periph, 1);
3281 /* It is safe to retry this operation */
3282 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3283 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
3285 softc->dsreg = MTIO_DSREG_TEN;
3286 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3287 softc->dsreg = MTIO_DSREG_REST;
3289 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3290 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3291 xpt_release_ccb(ccb);
3293 softc->fileno = softc->blkno = (daddr_t) 0;
3295 softc->fileno = softc->blkno = (daddr_t) -1;
3300 sareservereleaseunit(struct cam_periph *periph, int reserve)
3303 struct sa_softc *softc;
3306 softc = (struct sa_softc *)periph->softc;
3307 ccb = cam_periph_getccb(periph, 1);
3309 /* It is safe to retry this operation */
3310 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG,
3311 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
3312 softc->dsreg = MTIO_DSREG_RBSY;
3313 error = cam_periph_runccb(ccb, saerror, 0,
3314 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats);
3315 softc->dsreg = MTIO_DSREG_REST;
3317 xpt_release_ccb(ccb);
3320 * If the error was Illegal Request, then the device doesn't support
3321 * RESERVE/RELEASE. This is not an error.
3323 if (error == EINVAL) {
3331 saloadunload(struct cam_periph *periph, int load)
3334 struct sa_softc *softc;
3337 softc = (struct sa_softc *)periph->softc;
3339 ccb = cam_periph_getccb(periph, 1);
3341 /* It is safe to retry this operation */
3342 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE,
3343 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
3345 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
3346 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3347 softc->dsreg = MTIO_DSREG_REST;
3349 xpt_release_ccb(ccb);
3351 if (error || load == 0)
3352 softc->fileno = softc->blkno = (daddr_t) -1;
3353 else if (error == 0)
3354 softc->fileno = softc->blkno = (daddr_t) 0;
3359 saerase(struct cam_periph *periph, int longerase)
3363 struct sa_softc *softc;
3366 softc = (struct sa_softc *)periph->softc;
3368 ccb = cam_periph_getccb(periph, 1);
3370 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase,
3371 SSD_FULL_SIZE, ERASE_TIMEOUT);
3373 softc->dsreg = MTIO_DSREG_ZER;
3374 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats);
3375 softc->dsreg = MTIO_DSREG_REST;
3377 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
3378 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE);
3379 xpt_release_ccb(ccb);
3383 #endif /* _KERNEL */
3386 * Read tape block limits command.
3389 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
3390 void (*cbfcnp)(struct cam_periph *, union ccb *),
3391 u_int8_t tag_action,
3392 struct scsi_read_block_limits_data *rlimit_buf,
3393 u_int8_t sense_len, u_int32_t timeout)
3395 struct scsi_read_block_limits *scsi_cmd;
3397 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3398 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
3399 sizeof(*scsi_cmd), timeout);
3401 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
3402 bzero(scsi_cmd, sizeof(*scsi_cmd));
3403 scsi_cmd->opcode = READ_BLOCK_LIMITS;
3407 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
3408 void (*cbfcnp)(struct cam_periph *, union ccb *),
3409 u_int8_t tag_action, int readop, int sli,
3410 int fixed, u_int32_t length, u_int8_t *data_ptr,
3411 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
3413 struct scsi_sa_rw *scsi_cmd;
3415 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
3416 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE;
3417 scsi_cmd->sli_fixed = 0;
3419 scsi_cmd->sli_fixed |= SAR_SLI;
3421 scsi_cmd->sli_fixed |= SARW_FIXED;
3422 scsi_ulto3b(length, scsi_cmd->length);
3423 scsi_cmd->control = 0;
3425 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT,
3426 tag_action, data_ptr, dxfer_len, sense_len,
3427 sizeof(*scsi_cmd), timeout);
3431 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
3432 void (*cbfcnp)(struct cam_periph *, union ccb *),
3433 u_int8_t tag_action, int immediate, int eot,
3434 int reten, int load, u_int8_t sense_len,
3437 struct scsi_load_unload *scsi_cmd;
3439 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
3440 bzero(scsi_cmd, sizeof(*scsi_cmd));
3441 scsi_cmd->opcode = LOAD_UNLOAD;
3443 scsi_cmd->immediate = SLU_IMMED;
3445 scsi_cmd->eot_reten_load |= SLU_EOT;
3447 scsi_cmd->eot_reten_load |= SLU_RETEN;
3449 scsi_cmd->eot_reten_load |= SLU_LOAD;
3451 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3452 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
3456 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
3457 void (*cbfcnp)(struct cam_periph *, union ccb *),
3458 u_int8_t tag_action, int immediate, u_int8_t sense_len,
3461 struct scsi_rewind *scsi_cmd;
3463 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
3464 bzero(scsi_cmd, sizeof(*scsi_cmd));
3465 scsi_cmd->opcode = REWIND;
3467 scsi_cmd->immediate = SREW_IMMED;
3469 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3470 0, sense_len, sizeof(*scsi_cmd), timeout);
3474 scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
3475 void (*cbfcnp)(struct cam_periph *, union ccb *),
3476 u_int8_t tag_action, scsi_space_code code,
3477 u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
3479 struct scsi_space *scsi_cmd;
3481 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
3482 scsi_cmd->opcode = SPACE;
3483 scsi_cmd->code = code;
3484 scsi_ulto3b(count, scsi_cmd->count);
3485 scsi_cmd->control = 0;
3487 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3488 0, sense_len, sizeof(*scsi_cmd), timeout);
3492 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
3493 void (*cbfcnp)(struct cam_periph *, union ccb *),
3494 u_int8_t tag_action, int immediate, int setmark,
3495 u_int32_t num_marks, u_int8_t sense_len,
3498 struct scsi_write_filemarks *scsi_cmd;
3500 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
3501 bzero(scsi_cmd, sizeof(*scsi_cmd));
3502 scsi_cmd->opcode = WRITE_FILEMARKS;
3504 scsi_cmd->byte2 |= SWFMRK_IMMED;
3506 scsi_cmd->byte2 |= SWFMRK_WSMK;
3508 scsi_ulto3b(num_marks, scsi_cmd->num_marks);
3510 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3511 0, sense_len, sizeof(*scsi_cmd), timeout);
3515 * The reserve and release unit commands differ only by their opcodes.
3518 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
3519 void (*cbfcnp)(struct cam_periph *, union ccb *),
3520 u_int8_t tag_action, int third_party,
3521 int third_party_id, u_int8_t sense_len,
3522 u_int32_t timeout, int reserve)
3524 struct scsi_reserve_release_unit *scsi_cmd;
3526 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
3527 bzero(scsi_cmd, sizeof(*scsi_cmd));
3530 scsi_cmd->opcode = RESERVE_UNIT;
3532 scsi_cmd->opcode = RELEASE_UNIT;
3535 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
3536 scsi_cmd->lun_thirdparty |=
3537 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
3540 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3541 0, sense_len, sizeof(*scsi_cmd), timeout);
3545 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
3546 void (*cbfcnp)(struct cam_periph *, union ccb *),
3547 u_int8_t tag_action, int immediate, int long_erase,
3548 u_int8_t sense_len, u_int32_t timeout)
3550 struct scsi_erase *scsi_cmd;
3552 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
3553 bzero(scsi_cmd, sizeof(*scsi_cmd));
3555 scsi_cmd->opcode = ERASE;
3558 scsi_cmd->lun_imm_long |= SE_IMMED;
3561 scsi_cmd->lun_imm_long |= SE_LONG;
3563 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
3564 0, sense_len, sizeof(*scsi_cmd), timeout);
3568 * Read Tape Position command.
3571 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
3572 void (*cbfcnp)(struct cam_periph *, union ccb *),
3573 u_int8_t tag_action, int hardsoft,
3574 struct scsi_tape_position_data *sbp,
3575 u_int8_t sense_len, u_int32_t timeout)
3577 struct scsi_tape_read_position *scmd;
3579 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
3580 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
3581 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
3582 bzero(scmd, sizeof(*scmd));
3583 scmd->opcode = READ_POSITION;
3584 scmd->byte1 = hardsoft;
3588 * Set Tape Position command.
3591 scsi_set_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, u_int32_t blkno,
3594 u_int8_t sense_len, u_int32_t timeout)
3596 struct scsi_tape_locate *scmd;
3598 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
3599 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout);
3600 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
3601 bzero(scmd, sizeof(*scmd));
3602 scmd->opcode = LOCATE;
3604 scmd->byte1 |= SA_SPOS_BT;
3605 scsi_ulto4b(blkno, scmd->blkaddr);