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USB - Avoid unnecessary reprobes.
[dragonfly.git] / sys / bus / cam / scsi / scsi_da.c
bloba56aa17e985754c4fea51d3aa1ae45653234c562
1 /*
2 * Implementation of SCSI Direct Access Peripheral driver for CAM.
3 *
4 * Copyright (c) 1997 Justin T. Gibbs.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: src/sys/cam/scsi/scsi_da.c,v 1.42.2.46 2003/10/21 22:18:19 thomas Exp $
29 * $DragonFly: src/sys/bus/cam/scsi/scsi_da.c,v 1.59 2008/08/29 20:08:40 dillon Exp $
30 */
31
32 #include <sys/param.h>
33 #include <sys/bootmaj.h>
34
35 #ifdef _KERNEL
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/buf.h>
39 #include <sys/sysctl.h>
40 #include <sys/taskqueue.h>
41 #include <sys/lock.h>
42 #include <sys/conf.h>
43 #include <sys/devicestat.h>
44 #include <sys/disk.h>
45 #include <sys/dtype.h>
46 #include <sys/eventhandler.h>
47 #include <sys/malloc.h>
48 #include <sys/cons.h>
49 #include <sys/proc.h>
50 #include <sys/buf2.h>
51 #include <sys/thread2.h>
52 #endif /* _KERNEL */
53
54 #ifdef _KERNEL
55 #include <vm/pmap.h>
56 #endif
57
58 #ifndef _KERNEL
59 #include <stdio.h>
60 #include <string.h>
61 #endif /* _KERNEL */
62
63 #include <sys/camlib.h>
64 #include "../cam.h"
65 #include "../cam_ccb.h"
66 #include "../cam_extend.h"
67 #include "../cam_periph.h"
68 #include "../cam_xpt_periph.h"
69 #include "../cam_sim.h"
70
71 #include "scsi_message.h"
72
73 #ifndef _KERNEL
74 #include "scsi_da.h"
75 #endif /* !_KERNEL */
76
77 #ifdef _KERNEL
78 typedef enum {
79 DA_STATE_PROBE,
80 DA_STATE_PROBE2,
81 DA_STATE_NORMAL
82 } da_state;
83
84 typedef enum {
85 DA_FLAG_PACK_INVALID = 0x001,
86 DA_FLAG_NEW_PACK = 0x002,
87 DA_FLAG_PACK_LOCKED = 0x004,
88 DA_FLAG_PACK_REMOVABLE = 0x008,
89 DA_FLAG_TAGGED_QUEUING = 0x010,
90 DA_FLAG_NEED_OTAG = 0x020,
91 DA_FLAG_WENT_IDLE = 0x040,
92 DA_FLAG_RETRY_UA = 0x080,
93 DA_FLAG_OPEN = 0x100,
94 DA_FLAG_SCTX_INIT = 0x200
95 } da_flags;
96
97 typedef enum {
98 DA_Q_NONE = 0x00,
99 DA_Q_NO_SYNC_CACHE = 0x01,
100 DA_Q_NO_6_BYTE = 0x02,
101 DA_Q_NO_PREVENT = 0x04
102 } da_quirks;
103
104 typedef enum {
105 DA_CCB_PROBE = 0x01,
106 DA_CCB_PROBE2 = 0x02,
107 DA_CCB_BUFFER_IO = 0x03,
108 DA_CCB_WAITING = 0x04,
109 DA_CCB_DUMP = 0x05,
110 DA_CCB_TYPE_MASK = 0x0F,
111 DA_CCB_RETRY_UA = 0x10
112 } da_ccb_state;
113
114 /* Offsets into our private area for storing information */
115 #define ccb_state ppriv_field0
116 #define ccb_bio ppriv_ptr1
117
118 struct disk_params {
119 u_int8_t heads;
120 u_int32_t cylinders;
121 u_int8_t secs_per_track;
122 u_int32_t secsize; /* Number of bytes/sector */
123 u_int64_t sectors; /* total number sectors */
124 };
125
126 struct da_softc {
127 struct bio_queue_head bio_queue;
128 struct devstat device_stats;
129 SLIST_ENTRY(da_softc) links;
130 LIST_HEAD(, ccb_hdr) pending_ccbs;
131 da_state state;
132 da_flags flags;
133 da_quirks quirks;
134 int minimum_cmd_size;
135 int ordered_tag_count;
136 int outstanding_cmds;
137 struct disk_params params;
138 struct disk disk;
139 union ccb saved_ccb;
140 struct task sysctl_task;
141 struct sysctl_ctx_list sysctl_ctx;
142 struct sysctl_oid *sysctl_tree;
143 struct callout sendordered_c;
144 };
145
146 struct da_quirk_entry {
147 struct scsi_inquiry_pattern inq_pat;
148 da_quirks quirks;
149 };
150
151 static const char quantum[] = "QUANTUM";
152 static const char microp[] = "MICROP";
153
154 static struct da_quirk_entry da_quirk_table[] =
155 {
156 /* SPI, FC devices */
157 {
158 /*
159 * Fujitsu M2513A MO drives.
160 * Tested devices: M2513A2 firmware versions 1200 & 1300.
161 * (dip switch selects whether T_DIRECT or T_OPTICAL device)
162 * Reported by: W.Scholten <whs@xs4all.nl>
163 */
164 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
165 /*quirks*/ DA_Q_NO_SYNC_CACHE
166 },
167 {
168 /* See above. */
169 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
170 /*quirks*/ DA_Q_NO_SYNC_CACHE
171 },
172 {
173 /*
174 * This particular Fujitsu drive doesn't like the
175 * synchronize cache command.
176 * Reported by: Tom Jackson <toj@gorilla.net>
177 */
178 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
179 /*quirks*/ DA_Q_NO_SYNC_CACHE
180 },
181 {
182 /*
183 * This drive doesn't like the synchronize cache command
184 * either. Reported by: Matthew Jacob <mjacob@feral.com>
185 * in NetBSD PR kern/6027, August 24, 1998.
186 */
187 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
188 /*quirks*/ DA_Q_NO_SYNC_CACHE
189 },
190 {
191 /*
192 * This drive doesn't like the synchronize cache command
193 * either. Reported by: Hellmuth Michaelis (hm@kts.org)
194 * (PR 8882).
195 */
196 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
197 /*quirks*/ DA_Q_NO_SYNC_CACHE
198 },
199 {
200 /*
201 * Doesn't like the synchronize cache command.
202 * Reported by: Blaz Zupan <blaz@gold.amis.net>
203 */
204 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
205 /*quirks*/ DA_Q_NO_SYNC_CACHE
206 },
207 {
208 /*
209 * Doesn't like the synchronize cache command.
210 * Reported by: Blaz Zupan <blaz@gold.amis.net>
211 */
212 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
213 /*quirks*/ DA_Q_NO_SYNC_CACHE
214 },
215 {
216 /*
217 * Doesn't like the synchronize cache command.
218 */
219 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
220 /*quirks*/ DA_Q_NO_SYNC_CACHE
221 },
222 {
223 /*
224 * Doesn't like the synchronize cache command.
225 * Reported by: walter@pelissero.de
226 */
227 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"},
228 /*quirks*/ DA_Q_NO_SYNC_CACHE
229 },
230 {
231 /*
232 * Doesn't work correctly with 6 byte reads/writes.
233 * Returns illegal request, and points to byte 9 of the
234 * 6-byte CDB.
235 * Reported by: Adam McDougall <bsdx@spawnet.com>
236 */
237 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
238 /*quirks*/ DA_Q_NO_6_BYTE
239 },
240 {
241 /* See above. */
242 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
243 /*quirks*/ DA_Q_NO_6_BYTE
244 },
245 {
246 /*
247 * Doesn't like the synchronize cache command.
248 * Reported by: walter@pelissero.de
249 */
250 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
251 /*quirks*/ DA_Q_NO_SYNC_CACHE
252 },
253 {
254 /*
255 * The CISS RAID controllers do not support SYNC_CACHE
256 */
257 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
258 /*quirks*/ DA_Q_NO_SYNC_CACHE
259 },
260 /*
261 * USB mass storage devices supported by umass(4)
262 *
263 * NOTE: USB attachments automatically set DA_Q_NO_SYNC_CACHE so
264 * it does not have to be specified here.
265 */
266 {
267 /*
268 * Creative Nomad MUVO mp3 player (USB)
269 * PR: kern/53094
270 */
271 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
272 /*quirks*/ DA_Q_NO_PREVENT
273 },
274 {
275 /*
276 * Sigmatel USB Flash MP3 Player
277 * PR: kern/57046
278 */
279 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"},
280 /*quirks*/ DA_Q_NO_PREVENT
281 },
282 {
283 /*
284 * SEAGRAND NP-900 MP3 Player
285 * PR: kern/64563
286 */
287 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"},
288 /*quirks*/ DA_Q_NO_PREVENT
289 },
290 {
291 /*
292 * Creative MUVO Slim mp3 player (USB)
293 * PR: usb/86131
294 */
295 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim",
296 "*"}, /*quirks*/ DA_Q_NO_PREVENT
297 },
298 {
299 /*
300 * Philips USB Key Audio KEY013
301 * PR: usb/68412
302 */
303 {T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"},
304 /*quirks*/ DA_Q_NO_PREVENT
305 },
306 };
307
308 static d_open_t daopen;
309 static d_close_t daclose;
310 static d_strategy_t dastrategy;
311 static d_dump_t dadump;
312 static periph_init_t dainit;
313 static void daasync(void *callback_arg, u_int32_t code,
314 struct cam_path *path, void *arg);
315 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
316 static periph_ctor_t daregister;
317 static periph_dtor_t dacleanup;
318 static periph_start_t dastart;
319 static periph_oninv_t daoninvalidate;
320 static void dadone(struct cam_periph *periph,
321 union ccb *done_ccb);
322 static int daerror(union ccb *ccb, u_int32_t cam_flags,
323 u_int32_t sense_flags);
324 static void daprevent(struct cam_periph *periph, int action);
325 static int dagetcapacity(struct cam_periph *periph);
326 static int dacheckmedia(struct cam_periph *periph);
327 static void dasetgeom(struct cam_periph *periph, uint32_t block_len,
328 uint64_t maxsector);
329
330 static timeout_t dasendorderedtag;
331 static void dashutdown(void *arg, int howto);
332
333 #ifndef DA_DEFAULT_TIMEOUT
334 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */
335 #endif
336
337 #ifndef DA_DEFAULT_RETRY
338 #define DA_DEFAULT_RETRY 4
339 #endif
340
341 #ifndef DA_DEFAULT_SEND_ORDERED
342 #define DA_DEFAULT_SEND_ORDERED 1
343 #endif
344
345 static int da_retry_count = DA_DEFAULT_RETRY;
346 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
347 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
348 static struct callout dasendorderedtag_ch;
349
350 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
351 "CAM Direct Access Disk driver");
352 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
353 &da_retry_count, 0, "Normal I/O retry count");
354 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
355 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
356 &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
357 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
358 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
359 &da_send_ordered, 0, "Send Ordered Tags");
360 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
361
362 /*
363 * DA_ORDEREDTAG_INTERVAL determines how often, relative
364 * to the default timeout, we check to see whether an ordered
365 * tagged transaction is appropriate to prevent simple tag
366 * starvation. Since we'd like to ensure that there is at least
367 * 1/2 of the timeout length left for a starved transaction to
368 * complete after we've sent an ordered tag, we must poll at least
369 * four times in every timeout period. This takes care of the worst
370 * case where a starved transaction starts during an interval that
371 * meets the requirement "don't send an ordered tag" test so it takes
372 * us two intervals to determine that a tag must be sent.
373 */
374 #ifndef DA_ORDEREDTAG_INTERVAL
375 #define DA_ORDEREDTAG_INTERVAL 4
376 #endif
377
378 static struct periph_driver dadriver =
379 {
380 dainit, "da",
381 TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
382 };
383
384 PERIPHDRIVER_DECLARE(da, dadriver);
385
386 static struct dev_ops da_ops = {
387 { "da", DA_CDEV_MAJOR, D_DISK },
388 .d_open = daopen,
389 .d_close = daclose,
390 .d_read = physread,
391 .d_write = physwrite,
392 .d_strategy = dastrategy,
393 .d_dump = dadump
394 };
395
396 static struct extend_array *daperiphs;
397
398 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
399
400 static int
401 daopen(struct dev_open_args *ap)
402 {
403 cdev_t dev = ap->a_head.a_dev;
404 struct cam_periph *periph;
405 struct da_softc *softc;
406 struct disk_info info;
407 int unit;
408 int error;
409
410 unit = dkunit(dev);
411 periph = cam_extend_get(daperiphs, unit);
412 if (periph == NULL) {
413 return (ENXIO);
414 }
415
416 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
417 return(ENXIO);
418 }
419
420 cam_periph_lock(periph);
421 if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
422 cam_periph_unlock(periph);
423 cam_periph_release(periph);
424 return (error);
425 }
426
427 unit = periph->unit_number;
428 softc = (struct da_softc *)periph->softc;
429
430 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
431 ("daopen: dev=%s (unit %d)\n", devtoname(dev),
432 unit));
433
434 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
435 /* Invalidate our pack information. */
436 disk_invalidate(&softc->disk);
437 softc->flags &= ~DA_FLAG_PACK_INVALID;
438 }
439
440 error = dacheckmedia(periph);
441 softc->flags |= DA_FLAG_OPEN;
442
443 if (error == 0) {
444 struct ccb_getdev cgd;
445
446 /* Build disk information structure */
447 bzero(&info, sizeof(info));
448 info.d_type = DTYPE_SCSI;
449
450 /*
451 * Grab the inquiry data to get the vendor and product names.
452 * Put them in the typename and packname for the label.
453 */
454 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
455 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
456 xpt_action((union ccb *)&cgd);
457
458 /*
459 * Check to see whether or not the blocksize is set yet.
460 * If it isn't, set it and then clear the blocksize
461 * unavailable flag for the device statistics.
462 */
463 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
464 softc->device_stats.block_size = softc->params.secsize;
465 softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
466 }
467 }
468
469 if (error == 0) {
470 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
471 (softc->quirks & DA_Q_NO_PREVENT) == 0)
472 daprevent(periph, PR_PREVENT);
473 } else {
474 softc->flags &= ~DA_FLAG_OPEN;
475 cam_periph_release(periph);
476 }
477 cam_periph_unhold(periph, 1);
478 return (error);
479 }
480
481 static int
482 daclose(struct dev_close_args *ap)
483 {
484 cdev_t dev = ap->a_head.a_dev;
485 struct cam_periph *periph;
486 struct da_softc *softc;
487 int unit;
488 int error;
489
490 unit = dkunit(dev);
491 periph = cam_extend_get(daperiphs, unit);
492 if (periph == NULL)
493 return (ENXIO);
494
495 cam_periph_lock(periph);
496 if ((error = cam_periph_hold(periph, 0)) != 0) {
497 cam_periph_unlock(periph);
498 cam_periph_release(periph);
499 return (error);
500 }
501
502 softc = (struct da_softc *)periph->softc;
503
504 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
505 union ccb *ccb;
506
507 ccb = cam_periph_getccb(periph, /*priority*/1);
508
509 scsi_synchronize_cache(&ccb->csio,
510 /*retries*/1,
511 /*cbfcnp*/dadone,
512 MSG_SIMPLE_Q_TAG,
513 /*begin_lba*/0,/* Cover the whole disk */
514 /*lb_count*/0,
515 SSD_FULL_SIZE,
516 5 * 60 * 1000);
517
518 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
519 /*sense_flags*/SF_RETRY_UA,
520 &softc->device_stats);
521
522 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
523 if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
524 CAM_SCSI_STATUS_ERROR) {
525 int asc, ascq;
526 int sense_key, error_code;
527
528 scsi_extract_sense(&ccb->csio.sense_data,
529 &error_code,
530 &sense_key,
531 &asc, &ascq);
532 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
533 scsi_sense_print(&ccb->csio);
534 } else {
535 xpt_print(periph->path, "Synchronize cache "
536 "failed, status == 0x%x, scsi status == "
537 "0x%x\n", ccb->csio.ccb_h.status,
538 ccb->csio.scsi_status);
539 }
540 }
541
542 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
543 cam_release_devq(ccb->ccb_h.path,
544 /*relsim_flags*/0,
545 /*reduction*/0,
546 /*timeout*/0,
547 /*getcount_only*/0);
548
549 xpt_release_ccb(ccb);
550
551 }
552
553 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
554 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
555 daprevent(periph, PR_ALLOW);
556 /*
557 * If we've got removeable media, mark the blocksize as
558 * unavailable, since it could change when new media is
559 * inserted.
560 */
561 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
562 }
563
564 /*
565 * Don't compound any ref counting software bugs with more.
566 */
567 if (softc->flags & DA_FLAG_OPEN) {
568 softc->flags &= ~DA_FLAG_OPEN;
569 cam_periph_release(periph);
570 } else {
571 xpt_print(periph->path,
572 "daclose() called on an already closed device!\n");
573 }
574 cam_periph_unhold(periph, 1);
575 return (0);
576 }
577
578 /*
579 * Actually translate the requested transfer into one the physical driver
580 * can understand. The transfer is described by a buf and will include
581 * only one physical transfer.
582 */
583 static int
584 dastrategy(struct dev_strategy_args *ap)
585 {
586 cdev_t dev = ap->a_head.a_dev;
587 struct bio *bio = ap->a_bio;
588 struct buf *bp = bio->bio_buf;
589 struct cam_periph *periph;
590 struct da_softc *softc;
591 u_int unit;
592 u_int part;
593
594 unit = dkunit(dev);
595 part = dkpart(dev);
596 periph = cam_extend_get(daperiphs, unit);
597 if (periph == NULL) {
598 bp->b_error = ENXIO;
599 goto bad;
600 }
601 softc = (struct da_softc *)periph->softc;
602
603 cam_periph_lock(periph);
604
605 #if 0
606 /*
607 * check it's not too big a transfer for our adapter
608 */
609 scsi_minphys(bp, &sd_switch);
610 #endif
611
612 /*
613 * Mask interrupts so that the pack cannot be invalidated until
614 * after we are in the queue. Otherwise, we might not properly
615 * clean up one of the buffers.
616 */
617
618 /*
619 * If the device has been made invalid, error out
620 */
621 if ((softc->flags & DA_FLAG_PACK_INVALID)) {
622 cam_periph_unlock(periph);
623 bp->b_error = ENXIO;
624 goto bad;
625 }
626
627 /*
628 * Place it in the queue of disk activities for this disk
629 */
630 bioqdisksort(&softc->bio_queue, bio);
631
632 /*
633 * Schedule ourselves for performing the work.
634 */
635 xpt_schedule(periph, /* XXX priority */1);
636 cam_periph_unlock(periph);
637
638 return(0);
639 bad:
640 bp->b_flags |= B_ERROR;
641
642 /*
643 * Correctly set the buf to indicate a completed xfer
644 */
645 bp->b_resid = bp->b_bcount;
646 biodone(bio);
647 return(0);
648 }
649
650 static int
651 dadump(struct dev_dump_args *ap)
652 {
653 cdev_t dev = ap->a_head.a_dev;
654 struct cam_periph *periph;
655 struct da_softc *softc;
656 u_int unit;
657 long blkcnt;
658 vm_paddr_t addr;
659 struct ccb_scsiio csio;
660 int dumppages = MAXDUMPPGS;
661 int i;
662
663 /* toss any characters present prior to dump */
664 while (cncheckc() != -1)
665 ;
666
667 unit = dkunit(dev);
668 periph = cam_extend_get(daperiphs, unit);
669 if (periph == NULL) {
670 return (ENXIO);
671 }
672 softc = (struct da_softc *)periph->softc;
673
674 cam_periph_lock(periph);
675 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
676 cam_periph_unlock(periph);
677 return (ENXIO);
678 }
679
680 addr = 0; /* starting address */
681 blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
682
683 while (ap->a_count > 0) {
684 caddr_t va = NULL;
685
686 if ((ap->a_count / blkcnt) < dumppages)
687 dumppages = ap->a_count / blkcnt;
688
689 for (i = 0; i < dumppages; ++i) {
690 vm_paddr_t a = addr + (i * PAGE_SIZE);
691 if (is_physical_memory(a))
692 va = pmap_kenter_temporary(trunc_page(a), i);
693 else
694 va = pmap_kenter_temporary(trunc_page(0), i);
695 }
696
697 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
698 csio.ccb_h.flags |= CAM_POLLED;
699 csio.ccb_h.ccb_state = DA_CCB_DUMP;
700 scsi_read_write(&csio,
701 /*retries*/1,
702 dadone,
703 MSG_ORDERED_Q_TAG,
704 /*read*/FALSE,
705 /*byte2*/0,
706 /*minimum_cmd_size*/ softc->minimum_cmd_size,
707 ap->a_blkno,
708 blkcnt * dumppages,
709 /*data_ptr*/(u_int8_t *) va,
710 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
711 /*sense_len*/SSD_FULL_SIZE,
712 DA_DEFAULT_TIMEOUT * 1000);
713 xpt_polled_action((union ccb *)&csio);
714
715 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
716 kprintf("Aborting dump due to I/O error.\n");
717 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
718 CAM_SCSI_STATUS_ERROR)
719 scsi_sense_print(&csio);
720 else
721 kprintf("status == 0x%x, scsi status == 0x%x\n",
722 csio.ccb_h.status, csio.scsi_status);
723 return(EIO);
724 }
725
726 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
727 return (EINTR);
728
729 /* update block count */
730 ap->a_count -= blkcnt * dumppages;
731 ap->a_blkno += blkcnt * dumppages;
732 addr += PAGE_SIZE * dumppages;
733 }
734
735 /*
736 * Sync the disk cache contents to the physical media.
737 */
738 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
739
740 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
741 csio.ccb_h.ccb_state = DA_CCB_DUMP;
742 scsi_synchronize_cache(&csio,
743 /*retries*/1,
744 /*cbfcnp*/dadone,
745 MSG_SIMPLE_Q_TAG,
746 /*begin_lba*/0,/* Cover the whole disk */
747 /*lb_count*/0,
748 SSD_FULL_SIZE,
749 5 * 60 * 1000);
750 xpt_polled_action((union ccb *)&csio);
751
752 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
753 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
754 CAM_SCSI_STATUS_ERROR) {
755 int asc, ascq;
756 int sense_key, error_code;
757
758 scsi_extract_sense(&csio.sense_data,
759 &error_code,
760 &sense_key,
761 &asc, &ascq);
762 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
763 scsi_sense_print(&csio);
764 } else {
765 xpt_print(periph->path, "Synchronize cache "
766 "failed, status == 0x%x, scsi status == "
767 "0x%x\n", csio.ccb_h.status,
768 csio.scsi_status);
769 }
770 }
771 }
772 cam_periph_unlock(periph);
773 return (0);
774 }
775
776 static void
777 dainit(void)
778 {
779 cam_status status;
780
781 /*
782 * Create our extend array for storing the devices we attach to.
783 */
784 daperiphs = cam_extend_new();
785 if (daperiphs == NULL) {
786 kprintf("da: Failed to alloc extend array!\n");
787 return;
788 }
789
790 callout_init(&dasendorderedtag_ch);
791
792 /*
793 * Install a global async callback. This callback will
794 * receive async callbacks like "new device found".
795 */
796 status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
797
798 if (status != CAM_REQ_CMP) {
799 kprintf("da: Failed to attach master async callback "
800 "due to status 0x%x!\n", status);
801 } else if (da_send_ordered) {
802
803 /* Register our shutdown event handler */
804 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
805 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
806 kprintf("dainit: shutdown event registration failed!\n");
807 }
808 }
809
810 static void
811 daoninvalidate(struct cam_periph *periph)
812 {
813 struct da_softc *softc;
814 struct bio *q_bio;
815 struct buf *q_bp;
816
817 softc = (struct da_softc *)periph->softc;
818
819 /*
820 * De-register any async callbacks.
821 */
822 xpt_register_async(0, daasync, periph, periph->path);
823
824 softc->flags |= DA_FLAG_PACK_INVALID;
825
826 /*
827 * Return all queued I/O with ENXIO.
828 * XXX Handle any transactions queued to the card
829 * with XPT_ABORT_CCB.
830 */
831 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
832 bioq_remove(&softc->bio_queue, q_bio);
833 q_bp = q_bio->bio_buf;
834 q_bp->b_resid = q_bp->b_bcount;
835 q_bp->b_error = ENXIO;
836 q_bp->b_flags |= B_ERROR;
837 biodone(q_bio);
838 }
839 xpt_print(periph->path, "lost device\n");
840 }
841
842 static void
843 dacleanup(struct cam_periph *periph)
844 {
845 struct da_softc *softc;
846
847 softc = (struct da_softc *)periph->softc;
848
849 devstat_remove_entry(&softc->device_stats);
850 cam_extend_release(daperiphs, periph->unit_number);
851 xpt_print(periph->path, "removing device entry\n");
852 /*
853 * If we can't free the sysctl tree, oh well...
854 */
855 if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
856 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
857 xpt_print(periph->path, "can't remove sysctl context\n");
858 }
859 periph->softc = NULL;
860 if (softc->disk.d_rawdev) {
861 cam_periph_unlock(periph);
862 disk_destroy(&softc->disk);
863 cam_periph_lock(periph);
864 }
865
866 callout_stop(&softc->sendordered_c);
867 kfree(softc, M_DEVBUF);
868 }
869
870 static void
871 daasync(void *callback_arg, u_int32_t code,
872 struct cam_path *path, void *arg)
873 {
874 struct cam_periph *periph;
875
876 periph = (struct cam_periph *)callback_arg;
877
878 switch (code) {
879 case AC_FOUND_DEVICE:
880 {
881 struct ccb_getdev *cgd;
882 struct cam_sim *sim;
883 cam_status status;
884
885 cgd = (struct ccb_getdev *)arg;
886 if (cgd == NULL)
887 break;
888
889 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
890 && SID_TYPE(&cgd->inq_data) != T_RBC
891 && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
892 break;
893
894 /*
895 * Don't complain if a valid peripheral is already attached.
896 */
897 periph = cam_periph_find(cgd->ccb_h.path, "da");
898 if (periph && (periph->flags & CAM_PERIPH_INVALID) == 0)
899 break;
900
901 /*
902 * Allocate a peripheral instance for
903 * this device and start the probe
904 * process.
905 */
906 sim = xpt_path_sim(cgd->ccb_h.path);
907 status = cam_periph_alloc(daregister, daoninvalidate,
908 dacleanup, dastart,
909 "da", CAM_PERIPH_BIO,
910 cgd->ccb_h.path, daasync,
911 AC_FOUND_DEVICE, cgd);
912
913 if (status != CAM_REQ_CMP && status != CAM_REQ_INPROG) {
914 kprintf("daasync: Unable to attach to new device "
915 "due to status 0x%x\n", status);
916 }
917 break;
918 }
919 case AC_SENT_BDR:
920 case AC_BUS_RESET:
921 {
922 struct da_softc *softc;
923 struct ccb_hdr *ccbh;
924
925 softc = (struct da_softc *)periph->softc;
926 /*
927 * Don't fail on the expected unit attention
928 * that will occur.
929 */
930 softc->flags |= DA_FLAG_RETRY_UA;
931 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
932 ccbh->ccb_state |= DA_CCB_RETRY_UA;
933 /* FALLTHROUGH*/
934 }
935 default:
936 cam_periph_async(periph, code, path, arg);
937 break;
938 }
939 }
940
941 static void
942 dasysctlinit(void *context, int pending)
943 {
944 struct cam_periph *periph;
945 struct da_softc *softc;
946 char tmpstr[80], tmpstr2[80];
947
948 periph = (struct cam_periph *)context;
949 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
950 return;
951
952 softc = (struct da_softc *)periph->softc;
953 ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
954 ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
955
956 sysctl_ctx_init(&softc->sysctl_ctx);
957 softc->flags |= DA_FLAG_SCTX_INIT;
958 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
959 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
960 CTLFLAG_RD, 0, tmpstr);
961 if (softc->sysctl_tree == NULL) {
962 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
963 cam_periph_release(periph);
964 return;
965 }
966
967 /*
968 * Now register the sysctl handler, so the user can the value on
969 * the fly.
970 */
971 SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
972 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
973 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
974 "Minimum CDB size");
975
976 cam_periph_release(periph);
977 }
978
979 static int
980 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
981 {
982 int error, value;
983
984 value = *(int *)arg1;
985
986 error = sysctl_handle_int(oidp, &value, 0, req);
987
988 if ((error != 0)
989 || (req->newptr == NULL))
990 return (error);
991
992 /*
993 * Acceptable values here are 6, 10 or 12, or 16.
994 */
995 if (value < 6)
996 value = 6;
997 else if ((value > 6)
998 && (value <= 10))
999 value = 10;
1000 else if ((value > 10)
1001 && (value <= 12))
1002 value = 12;
1003 else if (value > 12)
1004 value = 16;
1005
1006 *(int *)arg1 = value;
1007
1008 return (0);
1009 }
1010
1011 static cam_status
1012 daregister(struct cam_periph *periph, void *arg)
1013 {
1014 struct da_softc *softc;
1015 struct ccb_pathinq cpi;
1016 struct ccb_getdev *cgd;
1017 char tmpstr[80];
1018 caddr_t match;
1019
1020 cgd = (struct ccb_getdev *)arg;
1021 if (periph == NULL) {
1022 kprintf("daregister: periph was NULL!!\n");
1023 return(CAM_REQ_CMP_ERR);
1024 }
1025
1026 if (cgd == NULL) {
1027 kprintf("daregister: no getdev CCB, can't register device\n");
1028 return(CAM_REQ_CMP_ERR);
1029 }
1030
1031 softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1032 LIST_INIT(&softc->pending_ccbs);
1033 softc->state = DA_STATE_PROBE;
1034 bioq_init(&softc->bio_queue);
1035 if (SID_IS_REMOVABLE(&cgd->inq_data))
1036 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1037 if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1038 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1039
1040 periph->softc = softc;
1041
1042 cam_extend_set(daperiphs, periph->unit_number, periph);
1043
1044 /*
1045 * See if this device has any quirks.
1046 */
1047 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1048 (caddr_t)da_quirk_table,
1049 sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1050 sizeof(*da_quirk_table), scsi_inquiry_match);
1051
1052 if (match != NULL)
1053 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1054 else
1055 softc->quirks = DA_Q_NONE;
1056
1057 /*
1058 * Unconditionally disable the synchronize cache command for
1059 * usb attachments. It's just impossible to determine if the
1060 * device supports it or not and if it doesn't the port can
1061 * brick.
1062 */
1063 if (strncmp(periph->sim->sim_name, "umass", 4) == 0) {
1064 softc->quirks |= DA_Q_NO_SYNC_CACHE;
1065 }
1066
1067 TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1068
1069 /* Check if the SIM does not want 6 byte commands */
1070 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1071 cpi.ccb_h.func_code = XPT_PATH_INQ;
1072 xpt_action((union ccb *)&cpi);
1073 if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1074 softc->quirks |= DA_Q_NO_6_BYTE;
1075
1076 /*
1077 * RBC devices don't have to support READ(6), only READ(10).
1078 */
1079 if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1080 softc->minimum_cmd_size = 10;
1081 else
1082 softc->minimum_cmd_size = 6;
1083
1084 /*
1085 * Load the user's default, if any.
1086 */
1087 ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1088 periph->unit_number);
1089 TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1090
1091 /*
1092 * 6, 10, 12, and 16 are the currently permissible values.
1093 */
1094 if (softc->minimum_cmd_size < 6)
1095 softc->minimum_cmd_size = 6;
1096 else if ((softc->minimum_cmd_size > 6)
1097 && (softc->minimum_cmd_size <= 10))
1098 softc->minimum_cmd_size = 10;
1099 else if ((softc->minimum_cmd_size > 10)
1100 && (softc->minimum_cmd_size <= 12))
1101 softc->minimum_cmd_size = 12;
1102 else if (softc->minimum_cmd_size > 12)
1103 softc->minimum_cmd_size = 16;
1104
1105 /*
1106 * The DA driver supports a blocksize, but
1107 * we don't know the blocksize until we do
1108 * a read capacity. So, set a flag to
1109 * indicate that the blocksize is
1110 * unavailable right now. We'll clear the
1111 * flag as soon as we've done a read capacity.
1112 */
1113 devstat_add_entry(&softc->device_stats, "da",
1114 periph->unit_number, 0,
1115 DEVSTAT_BS_UNAVAILABLE,
1116 SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1117 DEVSTAT_PRIORITY_DISK);
1118
1119 /*
1120 * Register this media as a disk
1121 */
1122 CAM_SIM_UNLOCK(periph->sim);
1123 disk_create(periph->unit_number, &softc->disk, &da_ops);
1124 softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1125 CAM_SIM_LOCK(periph->sim);
1126
1127 /*
1128 * Add async callbacks for bus reset and
1129 * bus device reset calls. I don't bother
1130 * checking if this fails as, in most cases,
1131 * the system will function just fine without
1132 * them and the only alternative would be to
1133 * not attach the device on failure.
1134 */
1135 xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1136 daasync, periph, periph->path);
1137
1138 /*
1139 * Take an exclusive refcount on the periph while dastart is called
1140 * to finish the probe. The reference will be dropped in dadone at
1141 * the end of probe.
1142 */
1143 cam_periph_hold(periph, 0);
1144 xpt_schedule(periph, /*priority*/5);
1145
1146 /*
1147 * Schedule a periodic event to occasionally send an
1148 * ordered tag to a device.
1149 */
1150 callout_init(&softc->sendordered_c);
1151 callout_reset(&softc->sendordered_c,
1152 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1153 dasendorderedtag, softc);
1154
1155 return(CAM_REQ_CMP);
1156 }
1157
1158 static void
1159 dastart(struct cam_periph *periph, union ccb *start_ccb)
1160 {
1161 struct da_softc *softc;
1162
1163 softc = (struct da_softc *)periph->softc;
1164
1165 switch (softc->state) {
1166 case DA_STATE_NORMAL:
1167 {
1168 /* Pull a buffer from the queue and get going on it */
1169 struct bio *bio;
1170 struct buf *bp;
1171 u_int8_t tag_code;
1172
1173 /*
1174 * See if there is a buf with work for us to do..
1175 */
1176 bio = bioq_first(&softc->bio_queue);
1177 if (periph->immediate_priority <= periph->pinfo.priority) {
1178 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1179 ("queuing for immediate ccb\n"));
1180 start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1181 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1182 periph_links.sle);
1183 periph->immediate_priority = CAM_PRIORITY_NONE;
1184 wakeup(&periph->ccb_list);
1185 if (bio != NULL) {
1186 /*
1187 * Have more work to do, so ensure we stay
1188 * scheduled
1189 */
1190 xpt_schedule(periph, /* XXX priority */1);
1191 }
1192 break;
1193 }
1194 if (bio == NULL) {
1195 xpt_release_ccb(start_ccb);
1196 break;
1197 }
1198
1199 /*
1200 * We can queue new work.
1201 */
1202 bioq_remove(&softc->bio_queue, bio);
1203 bp = bio->bio_buf;
1204
1205 devstat_start_transaction(&softc->device_stats);
1206
1207 if ((bp->b_flags & B_ORDERED) != 0 ||
1208 (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1209 softc->flags &= ~DA_FLAG_NEED_OTAG;
1210 softc->ordered_tag_count++;
1211 tag_code = MSG_ORDERED_Q_TAG;
1212 } else {
1213 tag_code = MSG_SIMPLE_Q_TAG;
1214 }
1215
1216 switch(bp->b_cmd) {
1217 case BUF_CMD_READ:
1218 case BUF_CMD_WRITE:
1219 /*
1220 * Block read/write op
1221 */
1222 KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1223
1224 scsi_read_write(
1225 &start_ccb->csio,
1226 da_retry_count, /* retries */
1227 dadone,
1228 tag_code,
1229 (bp->b_cmd == BUF_CMD_READ),
1230 0, /* byte2 */
1231 softc->minimum_cmd_size,
1232 bio->bio_offset / softc->params.secsize,
1233 bp->b_bcount / softc->params.secsize,
1234 bp->b_data,
1235 bp->b_bcount,
1236 SSD_FULL_SIZE, /* sense_len */
1237 da_default_timeout * 1000
1238 );
1239 break;
1240 case BUF_CMD_FLUSH:
1241 /*
1242 * Silently complete a flush request if the device
1243 * cannot handle it.
1244 */
1245 if (softc->quirks & DA_Q_NO_SYNC_CACHE) {
1246 xpt_release_ccb(start_ccb);
1247 start_ccb = NULL;
1248 devstat_end_transaction_buf(
1249 &softc->device_stats, bp);
1250 biodone(bio);
1251 } else {
1252 scsi_synchronize_cache(
1253 &start_ccb->csio,
1254 1, /* retries */
1255 dadone, /* cbfcnp */
1256 MSG_SIMPLE_Q_TAG,
1257 0, /* lba */
1258 0, /* count (whole disk) */
1259 SSD_FULL_SIZE,
1260 da_default_timeout*1000 /* timeout */
1261 );
1262 }
1263 break;
1264 default:
1265 xpt_release_ccb(start_ccb);
1266 start_ccb = NULL;
1267 panic("dastart: unrecognized bio cmd %d", bp->b_cmd);
1268 break; /* NOT REACHED */
1269 }
1270
1271 /*
1272 * Block out any asyncronous callbacks
1273 * while we touch the pending ccb list.
1274 */
1275 if (start_ccb) {
1276 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1277 LIST_INSERT_HEAD(&softc->pending_ccbs,
1278 &start_ccb->ccb_h, periph_links.le);
1279 softc->outstanding_cmds++;
1280
1281 /* We expect a unit attention from this device */
1282 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1283 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1284 softc->flags &= ~DA_FLAG_RETRY_UA;
1285 }
1286
1287 start_ccb->ccb_h.ccb_bio = bio;
1288 xpt_action(start_ccb);
1289 }
1290
1291 /*
1292 * Be sure we stay scheduled if we have more work to do.
1293 */
1294 bio = bioq_first(&softc->bio_queue);
1295 if (bio != NULL)
1296 xpt_schedule(periph, 1);
1297 break;
1298 }
1299 case DA_STATE_PROBE:
1300 {
1301 struct ccb_scsiio *csio;
1302 struct scsi_read_capacity_data *rcap;
1303
1304 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
1305 csio = &start_ccb->csio;
1306 scsi_read_capacity(csio,
1307 /*retries*/4,
1308 dadone,
1309 MSG_SIMPLE_Q_TAG,
1310 rcap,
1311 SSD_FULL_SIZE,
1312 /*timeout*/5000);
1313 start_ccb->ccb_h.ccb_bio = NULL;
1314 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1315 xpt_action(start_ccb);
1316 break;
1317 }
1318 case DA_STATE_PROBE2:
1319 {
1320 struct ccb_scsiio *csio;
1321 struct scsi_read_capacity_data_16 *rcaplong;
1322
1323 rcaplong = kmalloc(sizeof(*rcaplong), M_SCSIDA,
1324 M_INTWAIT | M_ZERO);
1325 if (rcaplong == NULL) {
1326 kprintf("dastart: Couldn't allocate read_capacity\n");
1327 /* da_free_periph??? */
1328 break;
1329 }
1330 csio = &start_ccb->csio;
1331 scsi_read_capacity_16(csio,
1332 /*retries*/ 4,
1333 /*cbfcnp*/ dadone,
1334 /*tag_action*/ MSG_SIMPLE_Q_TAG,
1335 /*lba*/ 0,
1336 /*reladr*/ 0,
1337 /*pmi*/ 0,
1338 rcaplong,
1339 /*sense_len*/ SSD_FULL_SIZE,
1340 /*timeout*/ 60000);
1341 start_ccb->ccb_h.ccb_bio = NULL;
1342 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1343 xpt_action(start_ccb);
1344 break;
1345 }
1346 }
1347 }
1348
1349 static int
1350 cmd6workaround(union ccb *ccb)
1351 {
1352 struct scsi_rw_6 cmd6;
1353 struct scsi_rw_10 *cmd10;
1354 struct da_softc *softc;
1355 u_int8_t *cdb;
1356 int frozen;
1357
1358 cdb = ccb->csio.cdb_io.cdb_bytes;
1359
1360 /* Translation only possible if CDB is an array and cmd is R/W6 */
1361 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1362 (*cdb != READ_6 && *cdb != WRITE_6))
1363 return 0;
1364
1365 xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1366 "increasing minimum_cmd_size to 10.\n");
1367 softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1368 softc->minimum_cmd_size = 10;
1369
1370 bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1371 cmd10 = (struct scsi_rw_10 *)cdb;
1372 cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1373 cmd10->byte2 = 0;
1374 scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1375 cmd10->reserved = 0;
1376 scsi_ulto2b(cmd6.length, cmd10->length);
1377 cmd10->control = cmd6.control;
1378 ccb->csio.cdb_len = sizeof(*cmd10);
1379
1380 /* Requeue request, unfreezing queue if necessary */
1381 frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1382 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1383 xpt_action(ccb);
1384 if (frozen) {
1385 cam_release_devq(ccb->ccb_h.path,
1386 /*relsim_flags*/0,
1387 /*reduction*/0,
1388 /*timeout*/0,
1389 /*getcount_only*/0);
1390 }
1391 return (ERESTART);
1392 }
1393
1394 static void
1395 dadone(struct cam_periph *periph, union ccb *done_ccb)
1396 {
1397 struct da_softc *softc;
1398 struct ccb_scsiio *csio;
1399 struct disk_info info;
1400
1401 softc = (struct da_softc *)periph->softc;
1402 csio = &done_ccb->csio;
1403 switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1404 case DA_CCB_BUFFER_IO:
1405 {
1406 struct buf *bp;
1407 struct bio *bio;
1408
1409 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1410 bp = bio->bio_buf;
1411 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1412 int error;
1413 int sf;
1414
1415 if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1416 sf = SF_RETRY_UA;
1417 else
1418 sf = 0;
1419
1420 error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1421 if (error == ERESTART) {
1422 /*
1423 * A retry was scheuled, so
1424 * just return.
1425 */
1426 return;
1427 }
1428 if (error != 0) {
1429 struct bio *q_bio;
1430 struct buf *q_bp;
1431
1432 if (error == ENXIO) {
1433 /*
1434 * Catastrophic error. Mark our pack as
1435 * invalid.
1436 */
1437 /*
1438 * XXX See if this is really a media
1439 * XXX change first?
1440 */
1441 xpt_print(periph->path,
1442 "Invalidating pack\n");
1443 softc->flags |= DA_FLAG_PACK_INVALID;
1444 }
1445
1446 /*
1447 * return all queued I/O with EIO, so that
1448 * the client can retry these I/Os in the
1449 * proper order should it attempt to recover.
1450 */
1451 while ((q_bio = bioq_first(&softc->bio_queue))
1452 != NULL) {
1453 bioq_remove(&softc->bio_queue, q_bio);
1454 q_bp = q_bio->bio_buf;
1455 q_bp->b_resid = q_bp->b_bcount;
1456 q_bp->b_error = EIO;
1457 q_bp->b_flags |= B_ERROR;
1458 biodone(q_bio);
1459 }
1460 bp->b_error = error;
1461 bp->b_resid = bp->b_bcount;
1462 bp->b_flags |= B_ERROR;
1463 } else {
1464 bp->b_resid = csio->resid;
1465 bp->b_error = 0;
1466 if (bp->b_resid != 0)
1467 bp->b_flags |= B_ERROR;
1468 }
1469 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1470 cam_release_devq(done_ccb->ccb_h.path,
1471 /*relsim_flags*/0,
1472 /*reduction*/0,
1473 /*timeout*/0,
1474 /*getcount_only*/0);
1475 } else {
1476 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1477 panic("REQ_CMP with QFRZN");
1478 bp->b_resid = csio->resid;
1479 if (csio->resid > 0)
1480 bp->b_flags |= B_ERROR;
1481 }
1482
1483 /*
1484 * Block out any asyncronous callbacks
1485 * while we touch the pending ccb list.
1486 */
1487 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1488 softc->outstanding_cmds--;
1489 if (softc->outstanding_cmds == 0)
1490 softc->flags |= DA_FLAG_WENT_IDLE;
1491
1492 devstat_end_transaction_buf(&softc->device_stats, bp);
1493 biodone(bio);
1494 break;
1495 }
1496 case DA_CCB_PROBE:
1497 case DA_CCB_PROBE2:
1498 {
1499 struct scsi_read_capacity_data *rdcap;
1500 struct scsi_read_capacity_data_16 *rcaplong;
1501 char announce_buf[80];
1502
1503 rdcap = NULL;
1504 rcaplong = NULL;
1505 if (softc->state == DA_STATE_PROBE)
1506 rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1507 else
1508 rcaplong = (struct scsi_read_capacity_data_16 *)
1509 csio->data_ptr;
1510
1511 bzero(&info, sizeof(info));
1512 info.d_type = DTYPE_SCSI;
1513 info.d_serialno = xpt_path_serialno(periph->path);
1514
1515 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1516 struct disk_params *dp;
1517 uint32_t block_size;
1518 uint64_t maxsector;
1519
1520 if (softc->state == DA_STATE_PROBE) {
1521 block_size = scsi_4btoul(rdcap->length);
1522 maxsector = scsi_4btoul(rdcap->addr);
1523
1524 /*
1525 * According to SBC-2, if the standard 10
1526 * byte READ CAPACITY command returns 2^32,
1527 * we should issue the 16 byte version of
1528 * the command, since the device in question
1529 * has more sectors than can be represented
1530 * with the short version of the command.
1531 */
1532 if (maxsector == 0xffffffff) {
1533 softc->state = DA_STATE_PROBE2;
1534 kfree(rdcap, M_SCSIDA);
1535 xpt_release_ccb(done_ccb);
1536 xpt_schedule(periph, /*priority*/5);
1537 return;
1538 }
1539 } else {
1540 block_size = scsi_4btoul(rcaplong->length);
1541 maxsector = scsi_8btou64(rcaplong->addr);
1542 }
1543 dasetgeom(periph, block_size, maxsector);
1544 dp = &softc->params;
1545 ksnprintf(announce_buf, sizeof(announce_buf),
1546 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1547 (uintmax_t) (((uintmax_t)dp->secsize *
1548 dp->sectors) / (1024*1024)),
1549 (uintmax_t)dp->sectors,
1550 dp->secsize, dp->heads, dp->secs_per_track,
1551 dp->cylinders);
1552 CAM_SIM_UNLOCK(periph->sim);
1553 info.d_media_blksize = softc->params.secsize;
1554 info.d_media_blocks = softc->params.sectors;
1555 info.d_media_size = 0;
1556 info.d_secpertrack = softc->params.secs_per_track;
1557 info.d_nheads = softc->params.heads;
1558 info.d_ncylinders = softc->params.cylinders;
1559 info.d_secpercyl = softc->params.heads *
1560 softc->params.secs_per_track;
1561 info.d_serialno = xpt_path_serialno(periph->path);
1562 disk_setdiskinfo(&softc->disk, &info);
1563 CAM_SIM_LOCK(periph->sim);
1564 } else {
1565 int error;
1566
1567 announce_buf[0] = '\0';
1568
1569 /*
1570 * Retry any UNIT ATTENTION type errors. They
1571 * are expected at boot.
1572 */
1573 error = daerror(done_ccb, CAM_RETRY_SELTO,
1574 SF_RETRY_UA|SF_NO_PRINT);
1575 if (error == ERESTART) {
1576 /*
1577 * A retry was scheuled, so
1578 * just return.
1579 */
1580 return;
1581 } else if (error != 0) {
1582 struct scsi_sense_data *sense;
1583 int asc, ascq;
1584 int sense_key, error_code;
1585 int have_sense;
1586 cam_status status;
1587 struct ccb_getdev cgd;
1588
1589 /* Don't wedge this device's queue */
1590 status = done_ccb->ccb_h.status;
1591 if ((status & CAM_DEV_QFRZN) != 0)
1592 cam_release_devq(done_ccb->ccb_h.path,
1593 /*relsim_flags*/0,
1594 /*reduction*/0,
1595 /*timeout*/0,
1596 /*getcount_only*/0);
1597
1598
1599 xpt_setup_ccb(&cgd.ccb_h,
1600 done_ccb->ccb_h.path,
1601 /* priority */ 1);
1602 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1603 xpt_action((union ccb *)&cgd);
1604
1605 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1606 || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1607 || ((status & CAM_AUTOSNS_VALID) == 0))
1608 have_sense = FALSE;
1609 else
1610 have_sense = TRUE;
1611
1612 if (have_sense) {
1613 sense = &csio->sense_data;
1614 scsi_extract_sense(sense, &error_code,
1615 &sense_key,
1616 &asc, &ascq);
1617 }
1618 /*
1619 * Attach to anything that claims to be a
1620 * direct access or optical disk device,
1621 * as long as it doesn't return a "Logical
1622 * unit not supported" (0x25) error.
1623 */
1624 if ((have_sense) && (asc != 0x25)
1625 && (error_code == SSD_CURRENT_ERROR)) {
1626 const char *sense_key_desc;
1627 const char *asc_desc;
1628
1629 scsi_sense_desc(sense_key, asc, ascq,
1630 &cgd.inq_data,
1631 &sense_key_desc,
1632 &asc_desc);
1633 ksnprintf(announce_buf,
1634 sizeof(announce_buf),
1635 "Attempt to query device "
1636 "size failed: %s, %s",
1637 sense_key_desc,
1638 asc_desc);
1639 info.d_media_blksize = 512;
1640 disk_setdiskinfo(&softc->disk, &info);
1641 } else {
1642 if (have_sense)
1643 scsi_sense_print(
1644 &done_ccb->csio);
1645 else {
1646 xpt_print(periph->path,
1647 "got CAM status %#x\n",
1648 done_ccb->ccb_h.status);
1649 }
1650
1651 xpt_print(periph->path, "fatal error, "
1652 "failed to attach to device\n");
1653
1654 /*
1655 * Free up resources.
1656 */
1657 cam_periph_invalidate(periph);
1658 }
1659 }
1660 }
1661 kfree(csio->data_ptr, M_SCSIDA);
1662 if (announce_buf[0] != '\0') {
1663 xpt_announce_periph(periph, announce_buf);
1664 /*
1665 * Create our sysctl variables, now that we know
1666 * we have successfully attached.
1667 */
1668 taskqueue_enqueue(taskqueue_thread[mycpuid],
1669 &softc->sysctl_task);
1670 }
1671 softc->state = DA_STATE_NORMAL;
1672 /*
1673 * Since our peripheral may be invalidated by an error
1674 * above or an external event, we must release our CCB
1675 * before releasing the probe lock on the peripheral.
1676 * The peripheral will only go away once the last lock
1677 * is removed, and we need it around for the CCB release
1678 * operation.
1679 */
1680 xpt_release_ccb(done_ccb);
1681 cam_periph_unhold(periph, 0);
1682 return;
1683 }
1684 case DA_CCB_WAITING:
1685 {
1686 /* Caller will release the CCB */
1687 wakeup(&done_ccb->ccb_h.cbfcnp);
1688 return;
1689 }
1690 case DA_CCB_DUMP:
1691 /* No-op. We're polling */
1692 return;
1693 default:
1694 break;
1695 }
1696 xpt_release_ccb(done_ccb);
1697 }
1698
1699 static int
1700 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1701 {
1702 struct da_softc *softc;
1703 struct cam_periph *periph;
1704 int error;
1705
1706 periph = xpt_path_periph(ccb->ccb_h.path);
1707 softc = (struct da_softc *)periph->softc;
1708
1709 /*
1710 * Automatically detect devices that do not support
1711 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1712 */
1713 error = 0;
1714 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1715 error = cmd6workaround(ccb);
1716 } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1717 CAM_SCSI_STATUS_ERROR)
1718 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1719 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1720 && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1721 && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1722 int sense_key, error_code, asc, ascq;
1723
1724 scsi_extract_sense(&ccb->csio.sense_data,
1725 &error_code, &sense_key, &asc, &ascq);
1726 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1727 error = cmd6workaround(ccb);
1728 }
1729 if (error == ERESTART)
1730 return (ERESTART);
1731
1732 /*
1733 * XXX
1734 * Until we have a better way of doing pack validation,
1735 * don't treat UAs as errors.
1736 */
1737 sense_flags |= SF_RETRY_UA;
1738 return(cam_periph_error(ccb, cam_flags, sense_flags,
1739 &softc->saved_ccb));
1740 }
1741
1742 static void
1743 daprevent(struct cam_periph *periph, int action)
1744 {
1745 struct da_softc *softc;
1746 union ccb *ccb;
1747 int error;
1748
1749 softc = (struct da_softc *)periph->softc;
1750
1751 if (((action == PR_ALLOW)
1752 && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1753 || ((action == PR_PREVENT)
1754 && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1755 return;
1756 }
1757
1758 ccb = cam_periph_getccb(periph, /*priority*/1);
1759
1760 scsi_prevent(&ccb->csio,
1761 /*retries*/1,
1762 /*cbcfp*/dadone,
1763 MSG_SIMPLE_Q_TAG,
1764 action,
1765 SSD_FULL_SIZE,
1766 5000);
1767
1768 error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
1769 SF_RETRY_UA, &softc->device_stats);
1770
1771 if (error == 0) {
1772 if (action == PR_ALLOW)
1773 softc->flags &= ~DA_FLAG_PACK_LOCKED;
1774 else
1775 softc->flags |= DA_FLAG_PACK_LOCKED;
1776 }
1777
1778 xpt_release_ccb(ccb);
1779 }
1780
1781 /*
1782 * Check media on open, e.g. card reader devices which had no initial media.
1783 */
1784 static int
1785 dacheckmedia(struct cam_periph *periph)
1786 {
1787 struct disk_params *dp;
1788 struct da_softc *softc;
1789 struct disk_info info;
1790 int error;
1791
1792 softc = (struct da_softc *)periph->softc;
1793 dp = &softc->params;
1794
1795 error = dagetcapacity(periph);
1796
1797 /*
1798 * Only reprobe on initial open and if the media is removable.
1799 *
1800 * NOTE: If we setdiskinfo() it will take the device probe
1801 * a bit of time to probe the slices and partitions,
1802 * and mess up booting. So avoid if nothing has changed.
1803 * XXX
1804 */
1805 if (softc->flags & DA_FLAG_OPEN)
1806 return (error);
1807 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) == 0)
1808 return (error);
1809
1810 bzero(&info, sizeof(info));
1811 info.d_type = DTYPE_SCSI;
1812 info.d_serialno = xpt_path_serialno(periph->path);
1813
1814 if (error == 0) {
1815 CAM_SIM_UNLOCK(periph->sim);
1816 info.d_media_blksize = softc->params.secsize;
1817 info.d_media_blocks = softc->params.sectors;
1818 info.d_media_size = 0;
1819 info.d_secpertrack = softc->params.secs_per_track;
1820 info.d_nheads = softc->params.heads;
1821 info.d_ncylinders = softc->params.cylinders;
1822 info.d_secpercyl = softc->params.heads *
1823 softc->params.secs_per_track;
1824 info.d_serialno = xpt_path_serialno(periph->path);
1825 if (info.d_media_blocks != softc->disk.d_info.d_media_blocks) {
1826 kprintf("%s%d: open removable media: "
1827 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)\n",
1828 periph->periph_name, periph->unit_number,
1829 (uintmax_t)(((uintmax_t)dp->secsize *
1830 dp->sectors) / (1024*1024)),
1831 (uintmax_t)dp->sectors, dp->secsize,
1832 dp->heads, dp->secs_per_track, dp->cylinders);
1833 disk_setdiskinfo(&softc->disk, &info);
1834 }
1835 CAM_SIM_LOCK(periph->sim);
1836 } else {
1837 kprintf("%s%d: open removable media: no media present\n",
1838 periph->periph_name, periph->unit_number);
1839 info.d_media_blksize = 512;
1840 disk_setdiskinfo(&softc->disk, &info);
1841 }
1842 return (error);
1843 }
1844
1845 static int
1846 dagetcapacity(struct cam_periph *periph)
1847 {
1848 struct da_softc *softc;
1849 union ccb *ccb;
1850 struct scsi_read_capacity_data *rcap;
1851 struct scsi_read_capacity_data_16 *rcaplong;
1852 uint32_t block_len;
1853 uint64_t maxsector;
1854 int error;
1855
1856 softc = (struct da_softc *)periph->softc;
1857 block_len = 0;
1858 maxsector = 0;
1859 error = 0;
1860
1861 /* Do a read capacity */
1862 rcap = (struct scsi_read_capacity_data *)kmalloc(sizeof(*rcaplong),
1863 M_SCSIDA, M_INTWAIT);
1864
1865 ccb = cam_periph_getccb(periph, /*priority*/1);
1866 scsi_read_capacity(&ccb->csio,
1867 /*retries*/4,
1868 /*cbfncp*/dadone,
1869 MSG_SIMPLE_Q_TAG,
1870 rcap,
1871 SSD_FULL_SIZE,
1872 /*timeout*/60000);
1873 ccb->ccb_h.ccb_bio = NULL;
1874
1875 error = cam_periph_runccb(ccb, daerror,
1876 /*cam_flags*/CAM_RETRY_SELTO,
1877 /*sense_flags*/SF_RETRY_UA,
1878 &softc->device_stats);
1879
1880 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1881 cam_release_devq(ccb->ccb_h.path,
1882 /*relsim_flags*/0,
1883 /*reduction*/0,
1884 /*timeout*/0,
1885 /*getcount_only*/0);
1886
1887 if (error == 0) {
1888 block_len = scsi_4btoul(rcap->length);
1889 maxsector = scsi_4btoul(rcap->addr);
1890
1891 if (maxsector != 0xffffffff)
1892 goto done;
1893 } else
1894 goto done;
1895
1896 rcaplong = (struct scsi_read_capacity_data_16 *)rcap;
1897
1898 scsi_read_capacity_16(&ccb->csio,
1899 /*retries*/ 4,
1900 /*cbfcnp*/ dadone,
1901 /*tag_action*/ MSG_SIMPLE_Q_TAG,
1902 /*lba*/ 0,
1903 /*reladr*/ 0,
1904 /*pmi*/ 0,
1905 rcaplong,
1906 /*sense_len*/ SSD_FULL_SIZE,
1907 /*timeout*/ 60000);
1908 ccb->ccb_h.ccb_bio = NULL;
1909
1910 error = cam_periph_runccb(ccb, daerror,
1911 /*cam_flags*/CAM_RETRY_SELTO,
1912 /*sense_flags*/SF_RETRY_UA,
1913 &softc->device_stats);
1914
1915 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1916 cam_release_devq(ccb->ccb_h.path,
1917 /*relsim_flags*/0,
1918 /*reduction*/0,
1919 /*timeout*/0,
1920 /*getcount_only*/0);
1921
1922 if (error == 0) {
1923 block_len = scsi_4btoul(rcaplong->length);
1924 maxsector = scsi_8btou64(rcaplong->addr);
1925 }
1926
1927 done:
1928
1929 if (error == 0)
1930 dasetgeom(periph, block_len, maxsector);
1931
1932 xpt_release_ccb(ccb);
1933
1934 kfree(rcap, M_SCSIDA);
1935
1936 return (error);
1937 }
1938
1939 static void
1940 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
1941 {
1942 struct ccb_calc_geometry ccg;
1943 struct da_softc *softc;
1944 struct disk_params *dp;
1945
1946 softc = (struct da_softc *)periph->softc;
1947
1948 dp = &softc->params;
1949 dp->secsize = block_len;
1950 dp->sectors = maxsector + 1;
1951 /*
1952 * Have the controller provide us with a geometry
1953 * for this disk. The only time the geometry
1954 * matters is when we boot and the controller
1955 * is the only one knowledgeable enough to come
1956 * up with something that will make this a bootable
1957 * device.
1958 */
1959 xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1960 ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1961 ccg.block_size = dp->secsize;
1962 ccg.volume_size = dp->sectors;
1963 ccg.heads = 0;
1964 ccg.secs_per_track = 0;
1965 ccg.cylinders = 0;
1966 xpt_action((union ccb*)&ccg);
1967 if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1968 /*
1969 * We don't know what went wrong here- but just pick
1970 * a geometry so we don't have nasty things like divide
1971 * by zero.
1972 */
1973 dp->heads = 255;
1974 dp->secs_per_track = 255;
1975 dp->cylinders = dp->sectors / (255 * 255);
1976 if (dp->cylinders == 0) {
1977 dp->cylinders = 1;
1978 }
1979 } else {
1980 dp->heads = ccg.heads;
1981 dp->secs_per_track = ccg.secs_per_track;
1982 dp->cylinders = ccg.cylinders;
1983 }
1984 }
1985
1986 static void
1987 dasendorderedtag(void *arg)
1988 {
1989 struct da_softc *softc = arg;
1990
1991 if (da_send_ordered) {
1992 if ((softc->ordered_tag_count == 0)
1993 && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1994 softc->flags |= DA_FLAG_NEED_OTAG;
1995 }
1996 if (softc->outstanding_cmds > 0)
1997 softc->flags &= ~DA_FLAG_WENT_IDLE;
1998
1999 softc->ordered_tag_count = 0;
2000 }
2001 /* Queue us up again */
2002 callout_reset(&softc->sendordered_c,
2003 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
2004 dasendorderedtag, softc);
2005 }
2006
2007 /*
2008 * Step through all DA peripheral drivers, and if the device is still open,
2009 * sync the disk cache to physical media.
2010 */
2011 static void
2012 dashutdown(void * arg, int howto)
2013 {
2014 struct cam_periph *periph;
2015 struct da_softc *softc;
2016
2017 TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2018 union ccb ccb;
2019
2020 cam_periph_lock(periph);
2021 softc = (struct da_softc *)periph->softc;
2022
2023 /*
2024 * We only sync the cache if the drive is still open, and
2025 * if the drive is capable of it..
2026 */
2027 if (((softc->flags & DA_FLAG_OPEN) == 0)
2028 || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2029 cam_periph_unlock(periph);
2030 continue;
2031 }
2032
2033 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2034
2035 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2036 scsi_synchronize_cache(&ccb.csio,
2037 /*retries*/1,
2038 /*cbfcnp*/dadone,
2039 MSG_SIMPLE_Q_TAG,
2040 /*begin_lba*/0, /* whole disk */
2041 /*lb_count*/0,
2042 SSD_FULL_SIZE,
2043 60 * 60 * 1000);
2044
2045 xpt_polled_action(&ccb);
2046
2047 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2048 if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2049 CAM_SCSI_STATUS_ERROR)
2050 && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2051 int error_code, sense_key, asc, ascq;
2052
2053 scsi_extract_sense(&ccb.csio.sense_data,
2054 &error_code, &sense_key,
2055 &asc, &ascq);
2056
2057 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2058 scsi_sense_print(&ccb.csio);
2059 } else {
2060 xpt_print(periph->path, "Synchronize "
2061 "cache failed, status == 0x%x, scsi status "
2062 "== 0x%x\n", ccb.ccb_h.status,
2063 ccb.csio.scsi_status);
2064 }
2065 }
2066
2067 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2068 cam_release_devq(ccb.ccb_h.path,
2069 /*relsim_flags*/0,
2070 /*reduction*/0,
2071 /*timeout*/0,
2072 /*getcount_only*/0);
2073
2074 cam_periph_unlock(periph);
2075 }
2076 }
2077
2078 #else /* !_KERNEL */
2079
2080 /*
2081 * XXX This is only left out of the kernel build to silence warnings. If,
2082 * for some reason this function is used in the kernel, the ifdefs should
2083 * be moved so it is included both in the kernel and userland.
2084 */
2085 void
2086 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2087 void (*cbfcnp)(struct cam_periph *, union ccb *),
2088 u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2089 u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2090 u_int32_t timeout)
2091 {
2092 struct scsi_format_unit *scsi_cmd;
2093
2094 scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2095 scsi_cmd->opcode = FORMAT_UNIT;
2096 scsi_cmd->byte2 = byte2;
2097 scsi_ulto2b(ileave, scsi_cmd->interleave);
2098
2099 cam_fill_csio(csio,
2100 retries,
2101 cbfcnp,
2102 /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2103 tag_action,
2104 data_ptr,
2105 dxfer_len,
2106 sense_len,
2107 sizeof(*scsi_cmd),
2108 timeout);
2109 }
2110
2111 #endif /* _KERNEL */
DragonFly BSD