FreeBSD/Linux Kernel Cross Reference
sys/cam/scsi/scsi_da.c
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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD: releng/8.2/sys/cam/scsi/scsi_da.c 215773 2010-11-23 21:35:13Z mav $");
31
32 #include <sys/param.h>
33
34 #ifdef _KERNEL
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/bio.h>
38 #include <sys/sysctl.h>
39 #include <sys/taskqueue.h>
40 #include <sys/lock.h>
41 #include <sys/mutex.h>
42 #include <sys/conf.h>
43 #include <sys/devicestat.h>
44 #include <sys/eventhandler.h>
45 #include <sys/malloc.h>
46 #include <sys/cons.h>
47 #include <geom/geom_disk.h>
48 #endif /* _KERNEL */
49
50 #ifndef _KERNEL
51 #include <stdio.h>
52 #include <string.h>
53 #endif /* _KERNEL */
54
55 #include <cam/cam.h>
56 #include <cam/cam_ccb.h>
57 #include <cam/cam_periph.h>
58 #include <cam/cam_xpt_periph.h>
59 #include <cam/cam_sim.h>
60
61 #include <cam/scsi/scsi_message.h>
62
63 #ifndef _KERNEL
64 #include <cam/scsi/scsi_da.h>
65 #endif /* !_KERNEL */
66
67 #ifdef _KERNEL
68 typedef enum {
69 DA_STATE_PROBE,
70 DA_STATE_PROBE2,
71 DA_STATE_NORMAL
72 } da_state;
73
74 typedef enum {
75 DA_FLAG_PACK_INVALID = 0x001,
76 DA_FLAG_NEW_PACK = 0x002,
77 DA_FLAG_PACK_LOCKED = 0x004,
78 DA_FLAG_PACK_REMOVABLE = 0x008,
79 DA_FLAG_TAGGED_QUEUING = 0x010,
80 DA_FLAG_NEED_OTAG = 0x020,
81 DA_FLAG_WENT_IDLE = 0x040,
82 DA_FLAG_RETRY_UA = 0x080,
83 DA_FLAG_OPEN = 0x100,
84 DA_FLAG_SCTX_INIT = 0x200
85 } da_flags;
86
87 typedef enum {
88 DA_Q_NONE = 0x00,
89 DA_Q_NO_SYNC_CACHE = 0x01,
90 DA_Q_NO_6_BYTE = 0x02,
91 DA_Q_NO_PREVENT = 0x04
92 } da_quirks;
93
94 typedef enum {
95 DA_CCB_PROBE = 0x01,
96 DA_CCB_PROBE2 = 0x02,
97 DA_CCB_BUFFER_IO = 0x03,
98 DA_CCB_WAITING = 0x04,
99 DA_CCB_DUMP = 0x05,
100 DA_CCB_TYPE_MASK = 0x0F,
101 DA_CCB_RETRY_UA = 0x10
102 } da_ccb_state;
103
104 /* Offsets into our private area for storing information */
105 #define ccb_state ppriv_field0
106 #define ccb_bp ppriv_ptr1
107
108 struct disk_params {
109 u_int8_t heads;
110 u_int32_t cylinders;
111 u_int8_t secs_per_track;
112 u_int32_t secsize; /* Number of bytes/sector */
113 u_int64_t sectors; /* total number sectors */
114 };
115
116 struct da_softc {
117 struct bio_queue_head bio_queue;
118 SLIST_ENTRY(da_softc) links;
119 LIST_HEAD(, ccb_hdr) pending_ccbs;
120 da_state state;
121 da_flags flags;
122 da_quirks quirks;
123 int minimum_cmd_size;
124 int ordered_tag_count;
125 int outstanding_cmds;
126 struct disk_params params;
127 struct disk *disk;
128 union ccb saved_ccb;
129 struct task sysctl_task;
130 struct sysctl_ctx_list sysctl_ctx;
131 struct sysctl_oid *sysctl_tree;
132 struct callout sendordered_c;
133 };
134
135 struct da_quirk_entry {
136 struct scsi_inquiry_pattern inq_pat;
137 da_quirks quirks;
138 };
139
140 static const char quantum[] = "QUANTUM";
141 static const char microp[] = "MICROP";
142
143 static struct da_quirk_entry da_quirk_table[] =
144 {
145 /* SPI, FC devices */
146 {
147 /*
148 * Fujitsu M2513A MO drives.
149 * Tested devices: M2513A2 firmware versions 1200 & 1300.
150 * (dip switch selects whether T_DIRECT or T_OPTICAL device)
151 * Reported by: W.Scholten <whs@xs4all.nl>
152 */
153 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
154 /*quirks*/ DA_Q_NO_SYNC_CACHE
155 },
156 {
157 /* See above. */
158 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
159 /*quirks*/ DA_Q_NO_SYNC_CACHE
160 },
161 {
162 /*
163 * This particular Fujitsu drive doesn't like the
164 * synchronize cache command.
165 * Reported by: Tom Jackson <toj@gorilla.net>
166 */
167 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
168 /*quirks*/ DA_Q_NO_SYNC_CACHE
169 },
170 {
171 /*
172 * This drive doesn't like the synchronize cache command
173 * either. Reported by: Matthew Jacob <mjacob@feral.com>
174 * in NetBSD PR kern/6027, August 24, 1998.
175 */
176 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
177 /*quirks*/ DA_Q_NO_SYNC_CACHE
178 },
179 {
180 /*
181 * This drive doesn't like the synchronize cache command
182 * either. Reported by: Hellmuth Michaelis (hm@kts.org)
183 * (PR 8882).
184 */
185 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
186 /*quirks*/ DA_Q_NO_SYNC_CACHE
187 },
188 {
189 /*
190 * Doesn't like the synchronize cache command.
191 * Reported by: Blaz Zupan <blaz@gold.amis.net>
192 */
193 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
194 /*quirks*/ DA_Q_NO_SYNC_CACHE
195 },
196 {
197 /*
198 * Doesn't like the synchronize cache command.
199 * Reported by: Blaz Zupan <blaz@gold.amis.net>
200 */
201 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
202 /*quirks*/ DA_Q_NO_SYNC_CACHE
203 },
204 {
205 /*
206 * Doesn't like the synchronize cache command.
207 */
208 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
209 /*quirks*/ DA_Q_NO_SYNC_CACHE
210 },
211 {
212 /*
213 * Doesn't like the synchronize cache command.
214 * Reported by: walter@pelissero.de
215 */
216 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"},
217 /*quirks*/ DA_Q_NO_SYNC_CACHE
218 },
219 {
220 /*
221 * Doesn't work correctly with 6 byte reads/writes.
222 * Returns illegal request, and points to byte 9 of the
223 * 6-byte CDB.
224 * Reported by: Adam McDougall <bsdx@spawnet.com>
225 */
226 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
227 /*quirks*/ DA_Q_NO_6_BYTE
228 },
229 {
230 /* See above. */
231 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
232 /*quirks*/ DA_Q_NO_6_BYTE
233 },
234 {
235 /*
236 * Doesn't like the synchronize cache command.
237 * Reported by: walter@pelissero.de
238 */
239 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
240 /*quirks*/ DA_Q_NO_SYNC_CACHE
241 },
242 {
243 /*
244 * The CISS RAID controllers do not support SYNC_CACHE
245 */
246 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
247 /*quirks*/ DA_Q_NO_SYNC_CACHE
248 },
249 /* USB mass storage devices supported by umass(4) */
250 {
251 /*
252 * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
253 * PR: kern/51675
254 */
255 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
256 /*quirks*/ DA_Q_NO_SYNC_CACHE
257 },
258 {
259 /*
260 * Power Quotient Int. (PQI) USB flash key
261 * PR: kern/53067
262 */
263 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "USB Flash Disk*",
264 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
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_SYNC_CACHE|DA_Q_NO_PREVENT
273 },
274 {
275 /*
276 * Jungsoft NEXDISK USB flash key
277 * PR: kern/54737
278 */
279 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
280 /*quirks*/ DA_Q_NO_SYNC_CACHE
281 },
282 {
283 /*
284 * FreeDik USB Mini Data Drive
285 * PR: kern/54786
286 */
287 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FreeDik*", "Mini Data Drive",
288 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
289 },
290 {
291 /*
292 * Sigmatel USB Flash MP3 Player
293 * PR: kern/57046
294 */
295 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"},
296 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
297 },
298 {
299 /*
300 * Neuros USB Digital Audio Computer
301 * PR: kern/63645
302 */
303 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NEUROS", "dig. audio comp.",
304 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
305 },
306 {
307 /*
308 * SEAGRAND NP-900 MP3 Player
309 * PR: kern/64563
310 */
311 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"},
312 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
313 },
314 {
315 /*
316 * iRiver iFP MP3 player (with UMS Firmware)
317 * PR: kern/54881, i386/63941, kern/66124
318 */
319 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
320 /*quirks*/ DA_Q_NO_SYNC_CACHE
321 },
322 {
323 /*
324 * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
325 * PR: kern/70158
326 */
327 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "Nex*", "*"},
328 /*quirks*/ DA_Q_NO_SYNC_CACHE
329 },
330 {
331 /*
332 * ZICPlay USB MP3 Player with FM
333 * PR: kern/75057
334 */
335 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ACTIONS*" , "USB DISK*", "*"},
336 /*quirks*/ DA_Q_NO_SYNC_CACHE
337 },
338 {
339 /*
340 * TEAC USB floppy mechanisms
341 */
342 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TEAC" , "FD-05*", "*"},
343 /*quirks*/ DA_Q_NO_SYNC_CACHE
344 },
345 {
346 /*
347 * Kingston DataTraveler II+ USB Pen-Drive.
348 * Reported by: Pawel Jakub Dawidek <pjd@FreeBSD.org>
349 */
350 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston" , "DataTraveler II+",
351 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
352 },
353 {
354 /*
355 * Motorola E398 Mobile Phone (TransFlash memory card).
356 * Reported by: Wojciech A. Koszek <dunstan@FreeBSD.czest.pl>
357 * PR: usb/89889
358 */
359 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Motorola" , "Motorola Phone",
360 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
361 },
362 {
363 /*
364 * Qware BeatZkey! Pro
365 * PR: usb/79164
366 */
367 {T_DIRECT, SIP_MEDIA_REMOVABLE, "GENERIC", "USB DISK DEVICE",
368 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
369 },
370 {
371 /*
372 * Time DPA20B 1GB MP3 Player
373 * PR: usb/81846
374 */
375 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB2.0*", "(FS) FLASH DISK*",
376 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
377 },
378 {
379 /*
380 * Samsung USB key 128Mb
381 * PR: usb/90081
382 */
383 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB-DISK", "FreeDik-FlashUsb",
384 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
385 },
386 {
387 /*
388 * Kingston DataTraveler 2.0 USB Flash memory.
389 * PR: usb/89196
390 */
391 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston", "DataTraveler 2.0",
392 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
393 },
394 {
395 /*
396 * Creative MUVO Slim mp3 player (USB)
397 * PR: usb/86131
398 */
399 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim",
400 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
401 },
402 {
403 /*
404 * United MP5512 Portable MP3 Player (2-in-1 USB DISK/MP3)
405 * PR: usb/80487
406 */
407 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "MUSIC DISK",
408 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
409 },
410 {
411 /*
412 * SanDisk Micro Cruzer 128MB
413 * PR: usb/75970
414 */
415 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk" , "Micro Cruzer",
416 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
417 },
418 {
419 /*
420 * TOSHIBA TransMemory USB sticks
421 * PR: kern/94660
422 */
423 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TOSHIBA", "TransMemory",
424 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
425 },
426 {
427 /*
428 * PNY USB Flash keys
429 * PR: usb/75578, usb/72344, usb/65436
430 */
431 {T_DIRECT, SIP_MEDIA_REMOVABLE, "*" , "USB DISK*",
432 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
433 },
434 {
435 /*
436 * Genesys 6-in-1 Card Reader
437 * PR: usb/94647
438 */
439 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "STORAGE DEVICE*",
440 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
441 },
442 {
443 /*
444 * Rekam Digital CAMERA
445 * PR: usb/98713
446 */
447 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CAMERA*", "4MP-9J6*",
448 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
449 },
450 {
451 /*
452 * iRiver H10 MP3 player
453 * PR: usb/102547
454 */
455 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "H10*",
456 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
457 },
458 {
459 /*
460 * iRiver U10 MP3 player
461 * PR: usb/92306
462 */
463 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "U10*",
464 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
465 },
466 {
467 /*
468 * X-Micro Flash Disk
469 * PR: usb/96901
470 */
471 {T_DIRECT, SIP_MEDIA_REMOVABLE, "X-Micro", "Flash Disk",
472 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
473 },
474 {
475 /*
476 * EasyMP3 EM732X USB 2.0 Flash MP3 Player
477 * PR: usb/96546
478 */
479 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EM732X", "MP3 Player*",
480 "1.00"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
481 },
482 {
483 /*
484 * Denver MP3 player
485 * PR: usb/107101
486 */
487 {T_DIRECT, SIP_MEDIA_REMOVABLE, "DENVER", "MP3 PLAYER",
488 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
489 },
490 {
491 /*
492 * Philips USB Key Audio KEY013
493 * PR: usb/68412
494 */
495 {T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"},
496 /*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
497 },
498 {
499 /*
500 * JNC MP3 Player
501 * PR: usb/94439
502 */
503 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JNC*" , "MP3 Player*",
504 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
505 },
506 {
507 /*
508 * SAMSUNG MP0402H
509 * PR: usb/108427
510 */
511 {T_DIRECT, SIP_MEDIA_FIXED, "SAMSUNG", "MP0402H", "*"},
512 /*quirks*/ DA_Q_NO_SYNC_CACHE
513 },
514 {
515 /*
516 * I/O Magic USB flash - Giga Bank
517 * PR: usb/108810
518 */
519 {T_DIRECT, SIP_MEDIA_FIXED, "GS-Magic", "stor*", "*"},
520 /*quirks*/ DA_Q_NO_SYNC_CACHE
521 },
522 {
523 /*
524 * JoyFly 128mb USB Flash Drive
525 * PR: 96133
526 */
527 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "Flash Disk*",
528 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
529 },
530 {
531 /*
532 * ChipsBnk usb stick
533 * PR: 103702
534 */
535 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ChipsBnk", "USB*",
536 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
537 },
538 {
539 /*
540 * Storcase (Kingston) InfoStation IFS FC2/SATA-R 201A
541 * PR: 129858
542 */
543 {T_DIRECT, SIP_MEDIA_FIXED, "IFS", "FC2/SATA-R*",
544 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
545 },
546 {
547 /*
548 * Samsung YP-U3 mp3-player
549 * PR: 125398
550 */
551 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Samsung", "YP-U3",
552 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
553 },
554 {
555 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Netac", "OnlyDisk*",
556 "2000"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
557 },
558 {
559 /*
560 * Sony Cyber-Shot DSC cameras
561 * PR: usb/137035
562 */
563 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
564 /*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
565 }
566 };
567
568 static disk_strategy_t dastrategy;
569 static dumper_t dadump;
570 static periph_init_t dainit;
571 static void daasync(void *callback_arg, u_int32_t code,
572 struct cam_path *path, void *arg);
573 static void dasysctlinit(void *context, int pending);
574 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
575 static periph_ctor_t daregister;
576 static periph_dtor_t dacleanup;
577 static periph_start_t dastart;
578 static periph_oninv_t daoninvalidate;
579 static void dadone(struct cam_periph *periph,
580 union ccb *done_ccb);
581 static int daerror(union ccb *ccb, u_int32_t cam_flags,
582 u_int32_t sense_flags);
583 static void daprevent(struct cam_periph *periph, int action);
584 static int dagetcapacity(struct cam_periph *periph);
585 static void dasetgeom(struct cam_periph *periph, uint32_t block_len,
586 uint64_t maxsector);
587 static timeout_t dasendorderedtag;
588 static void dashutdown(void *arg, int howto);
589
590 #ifndef DA_DEFAULT_TIMEOUT
591 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */
592 #endif
593
594 #ifndef DA_DEFAULT_RETRY
595 #define DA_DEFAULT_RETRY 4
596 #endif
597
598 #ifndef DA_DEFAULT_SEND_ORDERED
599 #define DA_DEFAULT_SEND_ORDERED 1
600 #endif
601
602
603 static int da_retry_count = DA_DEFAULT_RETRY;
604 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
605 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
606
607 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
608 "CAM Direct Access Disk driver");
609 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
610 &da_retry_count, 0, "Normal I/O retry count");
611 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
612 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
613 &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
614 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
615 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
616 &da_send_ordered, 0, "Send Ordered Tags");
617 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
618
619 /*
620 * DA_ORDEREDTAG_INTERVAL determines how often, relative
621 * to the default timeout, we check to see whether an ordered
622 * tagged transaction is appropriate to prevent simple tag
623 * starvation. Since we'd like to ensure that there is at least
624 * 1/2 of the timeout length left for a starved transaction to
625 * complete after we've sent an ordered tag, we must poll at least
626 * four times in every timeout period. This takes care of the worst
627 * case where a starved transaction starts during an interval that
628 * meets the requirement "don't send an ordered tag" test so it takes
629 * us two intervals to determine that a tag must be sent.
630 */
631 #ifndef DA_ORDEREDTAG_INTERVAL
632 #define DA_ORDEREDTAG_INTERVAL 4
633 #endif
634
635 static struct periph_driver dadriver =
636 {
637 dainit, "da",
638 TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
639 };
640
641 PERIPHDRIVER_DECLARE(da, dadriver);
642
643 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
644
645 static int
646 daopen(struct disk *dp)
647 {
648 struct cam_periph *periph;
649 struct da_softc *softc;
650 int unit;
651 int error;
652
653 periph = (struct cam_periph *)dp->d_drv1;
654 if (periph == NULL) {
655 return (ENXIO);
656 }
657
658 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
659 return(ENXIO);
660 }
661
662 cam_periph_lock(periph);
663 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
664 cam_periph_unlock(periph);
665 cam_periph_release(periph);
666 return (error);
667 }
668
669 unit = periph->unit_number;
670 softc = (struct da_softc *)periph->softc;
671 softc->flags |= DA_FLAG_OPEN;
672
673 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
674 ("daopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit,
675 unit));
676
677 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
678 /* Invalidate our pack information. */
679 softc->flags &= ~DA_FLAG_PACK_INVALID;
680 }
681
682 error = dagetcapacity(periph);
683
684 if (error == 0) {
685
686 softc->disk->d_sectorsize = softc->params.secsize;
687 softc->disk->d_mediasize = softc->params.secsize * (off_t)softc->params.sectors;
688 /* XXX: these are not actually "firmware" values, so they may be wrong */
689 softc->disk->d_fwsectors = softc->params.secs_per_track;
690 softc->disk->d_fwheads = softc->params.heads;
691 softc->disk->d_devstat->block_size = softc->params.secsize;
692 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
693
694 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
695 (softc->quirks & DA_Q_NO_PREVENT) == 0)
696 daprevent(periph, PR_PREVENT);
697 } else
698 softc->flags &= ~DA_FLAG_OPEN;
699
700 cam_periph_unhold(periph);
701 cam_periph_unlock(periph);
702
703 if (error != 0) {
704 cam_periph_release(periph);
705 }
706 return (error);
707 }
708
709 static int
710 daclose(struct disk *dp)
711 {
712 struct cam_periph *periph;
713 struct da_softc *softc;
714 int error;
715
716 periph = (struct cam_periph *)dp->d_drv1;
717 if (periph == NULL)
718 return (ENXIO);
719
720 cam_periph_lock(periph);
721 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) {
722 cam_periph_unlock(periph);
723 cam_periph_release(periph);
724 return (error);
725 }
726
727 softc = (struct da_softc *)periph->softc;
728
729 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
730 union ccb *ccb;
731
732 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
733
734 scsi_synchronize_cache(&ccb->csio,
735 /*retries*/1,
736 /*cbfcnp*/dadone,
737 MSG_SIMPLE_Q_TAG,
738 /*begin_lba*/0,/* Cover the whole disk */
739 /*lb_count*/0,
740 SSD_FULL_SIZE,
741 5 * 60 * 1000);
742
743 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
744 /*sense_flags*/SF_RETRY_UA,
745 softc->disk->d_devstat);
746
747 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
748 if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
749 CAM_SCSI_STATUS_ERROR) {
750 int asc, ascq;
751 int sense_key, error_code;
752
753 scsi_extract_sense(&ccb->csio.sense_data,
754 &error_code,
755 &sense_key,
756 &asc, &ascq);
757 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
758 scsi_sense_print(&ccb->csio);
759 } else {
760 xpt_print(periph->path, "Synchronize cache "
761 "failed, status == 0x%x, scsi status == "
762 "0x%x\n", ccb->csio.ccb_h.status,
763 ccb->csio.scsi_status);
764 }
765 }
766
767 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
768 cam_release_devq(ccb->ccb_h.path,
769 /*relsim_flags*/0,
770 /*reduction*/0,
771 /*timeout*/0,
772 /*getcount_only*/0);
773
774 xpt_release_ccb(ccb);
775
776 }
777
778 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
779 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
780 daprevent(periph, PR_ALLOW);
781 /*
782 * If we've got removeable media, mark the blocksize as
783 * unavailable, since it could change when new media is
784 * inserted.
785 */
786 softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
787 }
788
789 softc->flags &= ~DA_FLAG_OPEN;
790 cam_periph_unhold(periph);
791 cam_periph_unlock(periph);
792 cam_periph_release(periph);
793 return (0);
794 }
795
796 /*
797 * Actually translate the requested transfer into one the physical driver
798 * can understand. The transfer is described by a buf and will include
799 * only one physical transfer.
800 */
801 static void
802 dastrategy(struct bio *bp)
803 {
804 struct cam_periph *periph;
805 struct da_softc *softc;
806
807 periph = (struct cam_periph *)bp->bio_disk->d_drv1;
808 if (periph == NULL) {
809 biofinish(bp, NULL, ENXIO);
810 return;
811 }
812 softc = (struct da_softc *)periph->softc;
813
814 cam_periph_lock(periph);
815
816 /*
817 * If the device has been made invalid, error out
818 */
819 if ((softc->flags & DA_FLAG_PACK_INVALID)) {
820 cam_periph_unlock(periph);
821 biofinish(bp, NULL, ENXIO);
822 return;
823 }
824
825 /*
826 * Place it in the queue of disk activities for this disk
827 */
828 bioq_disksort(&softc->bio_queue, bp);
829
830 /*
831 * Schedule ourselves for performing the work.
832 */
833 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
834 cam_periph_unlock(periph);
835
836 return;
837 }
838
839 static int
840 dadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
841 {
842 struct cam_periph *periph;
843 struct da_softc *softc;
844 u_int secsize;
845 struct ccb_scsiio csio;
846 struct disk *dp;
847
848 dp = arg;
849 periph = dp->d_drv1;
850 if (periph == NULL)
851 return (ENXIO);
852 softc = (struct da_softc *)periph->softc;
853 cam_periph_lock(periph);
854 secsize = softc->params.secsize;
855
856 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
857 cam_periph_unlock(periph);
858 return (ENXIO);
859 }
860
861 if (length > 0) {
862 xpt_setup_ccb(&csio.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
863 csio.ccb_h.ccb_state = DA_CCB_DUMP;
864 scsi_read_write(&csio,
865 /*retries*/1,
866 dadone,
867 MSG_ORDERED_Q_TAG,
868 /*read*/FALSE,
869 /*byte2*/0,
870 /*minimum_cmd_size*/ softc->minimum_cmd_size,
871 offset / secsize,
872 length / secsize,
873 /*data_ptr*/(u_int8_t *) virtual,
874 /*dxfer_len*/length,
875 /*sense_len*/SSD_FULL_SIZE,
876 DA_DEFAULT_TIMEOUT * 1000);
877 xpt_polled_action((union ccb *)&csio);
878
879 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
880 printf("Aborting dump due to I/O error.\n");
881 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
882 CAM_SCSI_STATUS_ERROR)
883 scsi_sense_print(&csio);
884 else
885 printf("status == 0x%x, scsi status == 0x%x\n",
886 csio.ccb_h.status, csio.scsi_status);
887 return(EIO);
888 }
889 cam_periph_unlock(periph);
890 return(0);
891 }
892
893 /*
894 * Sync the disk cache contents to the physical media.
895 */
896 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
897
898 xpt_setup_ccb(&csio.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
899 csio.ccb_h.ccb_state = DA_CCB_DUMP;
900 scsi_synchronize_cache(&csio,
901 /*retries*/1,
902 /*cbfcnp*/dadone,
903 MSG_SIMPLE_Q_TAG,
904 /*begin_lba*/0,/* Cover the whole disk */
905 /*lb_count*/0,
906 SSD_FULL_SIZE,
907 5 * 60 * 1000);
908 xpt_polled_action((union ccb *)&csio);
909
910 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
911 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
912 CAM_SCSI_STATUS_ERROR) {
913 int asc, ascq;
914 int sense_key, error_code;
915
916 scsi_extract_sense(&csio.sense_data,
917 &error_code,
918 &sense_key,
919 &asc, &ascq);
920 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
921 scsi_sense_print(&csio);
922 } else {
923 xpt_print(periph->path, "Synchronize cache "
924 "failed, status == 0x%x, scsi status == "
925 "0x%x\n", csio.ccb_h.status,
926 csio.scsi_status);
927 }
928 }
929 }
930 cam_periph_unlock(periph);
931 return (0);
932 }
933
934 static void
935 dainit(void)
936 {
937 cam_status status;
938
939 /*
940 * Install a global async callback. This callback will
941 * receive async callbacks like "new device found".
942 */
943 status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
944
945 if (status != CAM_REQ_CMP) {
946 printf("da: Failed to attach master async callback "
947 "due to status 0x%x!\n", status);
948 } else if (da_send_ordered) {
949
950 /* Register our shutdown event handler */
951 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
952 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
953 printf("dainit: shutdown event registration failed!\n");
954 }
955 }
956
957 static void
958 daoninvalidate(struct cam_periph *periph)
959 {
960 struct da_softc *softc;
961
962 softc = (struct da_softc *)periph->softc;
963
964 /*
965 * De-register any async callbacks.
966 */
967 xpt_register_async(0, daasync, periph, periph->path);
968
969 softc->flags |= DA_FLAG_PACK_INVALID;
970
971 /*
972 * Return all queued I/O with ENXIO.
973 * XXX Handle any transactions queued to the card
974 * with XPT_ABORT_CCB.
975 */
976 bioq_flush(&softc->bio_queue, NULL, ENXIO);
977
978 disk_gone(softc->disk);
979 xpt_print(periph->path, "lost device\n");
980 }
981
982 static void
983 dacleanup(struct cam_periph *periph)
984 {
985 struct da_softc *softc;
986
987 softc = (struct da_softc *)periph->softc;
988
989 xpt_print(periph->path, "removing device entry\n");
990 cam_periph_unlock(periph);
991
992 /*
993 * If we can't free the sysctl tree, oh well...
994 */
995 if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
996 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
997 xpt_print(periph->path, "can't remove sysctl context\n");
998 }
999
1000 disk_destroy(softc->disk);
1001 callout_drain(&softc->sendordered_c);
1002 free(softc, M_DEVBUF);
1003 cam_periph_lock(periph);
1004 }
1005
1006 static void
1007 daasync(void *callback_arg, u_int32_t code,
1008 struct cam_path *path, void *arg)
1009 {
1010 struct cam_periph *periph;
1011
1012 periph = (struct cam_periph *)callback_arg;
1013 switch (code) {
1014 case AC_FOUND_DEVICE:
1015 {
1016 struct ccb_getdev *cgd;
1017 cam_status status;
1018
1019 cgd = (struct ccb_getdev *)arg;
1020 if (cgd == NULL)
1021 break;
1022
1023 if (cgd->protocol != PROTO_SCSI)
1024 break;
1025
1026 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1027 && SID_TYPE(&cgd->inq_data) != T_RBC
1028 && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1029 break;
1030
1031 /*
1032 * Allocate a peripheral instance for
1033 * this device and start the probe
1034 * process.
1035 */
1036 status = cam_periph_alloc(daregister, daoninvalidate,
1037 dacleanup, dastart,
1038 "da", CAM_PERIPH_BIO,
1039 cgd->ccb_h.path, daasync,
1040 AC_FOUND_DEVICE, cgd);
1041
1042 if (status != CAM_REQ_CMP
1043 && status != CAM_REQ_INPROG)
1044 printf("daasync: Unable to attach to new device "
1045 "due to status 0x%x\n", status);
1046 break;
1047 }
1048 case AC_SENT_BDR:
1049 case AC_BUS_RESET:
1050 {
1051 struct da_softc *softc;
1052 struct ccb_hdr *ccbh;
1053
1054 softc = (struct da_softc *)periph->softc;
1055 /*
1056 * Don't fail on the expected unit attention
1057 * that will occur.
1058 */
1059 softc->flags |= DA_FLAG_RETRY_UA;
1060 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1061 ccbh->ccb_state |= DA_CCB_RETRY_UA;
1062 /* FALLTHROUGH*/
1063 }
1064 default:
1065 cam_periph_async(periph, code, path, arg);
1066 break;
1067 }
1068 }
1069
1070 static void
1071 dasysctlinit(void *context, int pending)
1072 {
1073 struct cam_periph *periph;
1074 struct da_softc *softc;
1075 char tmpstr[80], tmpstr2[80];
1076
1077 periph = (struct cam_periph *)context;
1078 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1079 return;
1080
1081 softc = (struct da_softc *)periph->softc;
1082 snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1083 snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1084
1085 sysctl_ctx_init(&softc->sysctl_ctx);
1086 softc->flags |= DA_FLAG_SCTX_INIT;
1087 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1088 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1089 CTLFLAG_RD, 0, tmpstr);
1090 if (softc->sysctl_tree == NULL) {
1091 printf("dasysctlinit: unable to allocate sysctl tree\n");
1092 cam_periph_release(periph);
1093 return;
1094 }
1095
1096 /*
1097 * Now register the sysctl handler, so the user can the value on
1098 * the fly.
1099 */
1100 SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1101 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1102 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1103 "Minimum CDB size");
1104
1105 cam_periph_release(periph);
1106 }
1107
1108 static int
1109 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1110 {
1111 int error, value;
1112
1113 value = *(int *)arg1;
1114
1115 error = sysctl_handle_int(oidp, &value, 0, req);
1116
1117 if ((error != 0)
1118 || (req->newptr == NULL))
1119 return (error);
1120
1121 /*
1122 * Acceptable values here are 6, 10, 12 or 16.
1123 */
1124 if (value < 6)
1125 value = 6;
1126 else if ((value > 6)
1127 && (value <= 10))
1128 value = 10;
1129 else if ((value > 10)
1130 && (value <= 12))
1131 value = 12;
1132 else if (value > 12)
1133 value = 16;
1134
1135 *(int *)arg1 = value;
1136
1137 return (0);
1138 }
1139
1140 static cam_status
1141 daregister(struct cam_periph *periph, void *arg)
1142 {
1143 struct da_softc *softc;
1144 struct ccb_pathinq cpi;
1145 struct ccb_getdev *cgd;
1146 char tmpstr[80];
1147 caddr_t match;
1148
1149 cgd = (struct ccb_getdev *)arg;
1150 if (periph == NULL) {
1151 printf("daregister: periph was NULL!!\n");
1152 return(CAM_REQ_CMP_ERR);
1153 }
1154
1155 if (cgd == NULL) {
1156 printf("daregister: no getdev CCB, can't register device\n");
1157 return(CAM_REQ_CMP_ERR);
1158 }
1159
1160 softc = (struct da_softc *)malloc(sizeof(*softc), M_DEVBUF,
1161 M_NOWAIT|M_ZERO);
1162
1163 if (softc == NULL) {
1164 printf("daregister: Unable to probe new device. "
1165 "Unable to allocate softc\n");
1166 return(CAM_REQ_CMP_ERR);
1167 }
1168
1169 LIST_INIT(&softc->pending_ccbs);
1170 softc->state = DA_STATE_PROBE;
1171 bioq_init(&softc->bio_queue);
1172 if (SID_IS_REMOVABLE(&cgd->inq_data))
1173 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1174 if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1175 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1176
1177 periph->softc = softc;
1178
1179 /*
1180 * See if this device has any quirks.
1181 */
1182 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1183 (caddr_t)da_quirk_table,
1184 sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1185 sizeof(*da_quirk_table), scsi_inquiry_match);
1186
1187 if (match != NULL)
1188 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1189 else
1190 softc->quirks = DA_Q_NONE;
1191
1192 /* Check if the SIM does not want 6 byte commands */
1193 bzero(&cpi, sizeof(cpi));
1194 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1195 cpi.ccb_h.func_code = XPT_PATH_INQ;
1196 xpt_action((union ccb *)&cpi);
1197 if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1198 softc->quirks |= DA_Q_NO_6_BYTE;
1199
1200 TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1201
1202 /*
1203 * RBC devices don't have to support READ(6), only READ(10).
1204 */
1205 if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1206 softc->minimum_cmd_size = 10;
1207 else
1208 softc->minimum_cmd_size = 6;
1209
1210 /*
1211 * Load the user's default, if any.
1212 */
1213 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1214 periph->unit_number);
1215 TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1216
1217 /*
1218 * 6, 10, 12 and 16 are the currently permissible values.
1219 */
1220 if (softc->minimum_cmd_size < 6)
1221 softc->minimum_cmd_size = 6;
1222 else if ((softc->minimum_cmd_size > 6)
1223 && (softc->minimum_cmd_size <= 10))
1224 softc->minimum_cmd_size = 10;
1225 else if ((softc->minimum_cmd_size > 10)
1226 && (softc->minimum_cmd_size <= 12))
1227 softc->minimum_cmd_size = 12;
1228 else if (softc->minimum_cmd_size > 12)
1229 softc->minimum_cmd_size = 16;
1230
1231 /*
1232 * Register this media as a disk
1233 */
1234
1235 mtx_unlock(periph->sim->mtx);
1236 softc->disk = disk_alloc();
1237 softc->disk->d_open = daopen;
1238 softc->disk->d_close = daclose;
1239 softc->disk->d_strategy = dastrategy;
1240 softc->disk->d_dump = dadump;
1241 softc->disk->d_name = "da";
1242 softc->disk->d_drv1 = periph;
1243 if (cpi.maxio == 0)
1244 softc->disk->d_maxsize = DFLTPHYS; /* traditional default */
1245 else if (cpi.maxio > MAXPHYS)
1246 softc->disk->d_maxsize = MAXPHYS; /* for safety */
1247 else
1248 softc->disk->d_maxsize = cpi.maxio;
1249 softc->disk->d_unit = periph->unit_number;
1250 softc->disk->d_flags = 0;
1251 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0)
1252 softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
1253 strlcpy(softc->disk->d_ident, cgd->serial_num,
1254 MIN(sizeof(softc->disk->d_ident), cgd->serial_num_len + 1));
1255 disk_create(softc->disk, DISK_VERSION);
1256 mtx_lock(periph->sim->mtx);
1257
1258 /*
1259 * Add async callbacks for bus reset and
1260 * bus device reset calls. I don't bother
1261 * checking if this fails as, in most cases,
1262 * the system will function just fine without
1263 * them and the only alternative would be to
1264 * not attach the device on failure.
1265 */
1266 xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1267 daasync, periph, periph->path);
1268
1269 /*
1270 * Take an exclusive refcount on the periph while dastart is called
1271 * to finish the probe. The reference will be dropped in dadone at
1272 * the end of probe.
1273 */
1274 (void)cam_periph_hold(periph, PRIBIO);
1275 xpt_schedule(periph, CAM_PRIORITY_DEV);
1276
1277 /*
1278 * Schedule a periodic event to occasionally send an
1279 * ordered tag to a device.
1280 */
1281 callout_init_mtx(&softc->sendordered_c, periph->sim->mtx, 0);
1282 callout_reset(&softc->sendordered_c,
1283 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1284 dasendorderedtag, softc);
1285
1286 return(CAM_REQ_CMP);
1287 }
1288
1289 static void
1290 dastart(struct cam_periph *periph, union ccb *start_ccb)
1291 {
1292 struct da_softc *softc;
1293
1294 softc = (struct da_softc *)periph->softc;
1295
1296 switch (softc->state) {
1297 case DA_STATE_NORMAL:
1298 {
1299 /* Pull a buffer from the queue and get going on it */
1300 struct bio *bp;
1301
1302 /*
1303 * See if there is a buf with work for us to do..
1304 */
1305 bp = bioq_first(&softc->bio_queue);
1306 if (periph->immediate_priority <= periph->pinfo.priority) {
1307 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1308 ("queuing for immediate ccb\n"));
1309 start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1310 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1311 periph_links.sle);
1312 periph->immediate_priority = CAM_PRIORITY_NONE;
1313 wakeup(&periph->ccb_list);
1314 } else if (bp == NULL) {
1315 xpt_release_ccb(start_ccb);
1316 } else {
1317 u_int8_t tag_code;
1318
1319 bioq_remove(&softc->bio_queue, bp);
1320
1321 if ((bp->bio_flags & BIO_ORDERED) != 0
1322 || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1323 softc->flags &= ~DA_FLAG_NEED_OTAG;
1324 softc->ordered_tag_count++;
1325 tag_code = MSG_ORDERED_Q_TAG;
1326 } else {
1327 tag_code = MSG_SIMPLE_Q_TAG;
1328 }
1329 switch (bp->bio_cmd) {
1330 case BIO_READ:
1331 case BIO_WRITE:
1332 scsi_read_write(&start_ccb->csio,
1333 /*retries*/da_retry_count,
1334 /*cbfcnp*/dadone,
1335 /*tag_action*/tag_code,
1336 /*read_op*/bp->bio_cmd
1337 == BIO_READ,
1338 /*byte2*/0,
1339 softc->minimum_cmd_size,
1340 /*lba*/bp->bio_pblkno,
1341 /*block_count*/bp->bio_bcount /
1342 softc->params.secsize,
1343 /*data_ptr*/ bp->bio_data,
1344 /*dxfer_len*/ bp->bio_bcount,
1345 /*sense_len*/SSD_FULL_SIZE,
1346 da_default_timeout * 1000);
1347 break;
1348 case BIO_FLUSH:
1349 /*
1350 * BIO_FLUSH doesn't currently communicate
1351 * range data, so we synchronize the cache
1352 * over the whole disk. We also force
1353 * ordered tag semantics the flush applies
1354 * to all previously queued I/O.
1355 */
1356 scsi_synchronize_cache(&start_ccb->csio,
1357 /*retries*/1,
1358 /*cbfcnp*/dadone,
1359 MSG_ORDERED_Q_TAG,
1360 /*begin_lba*/0,
1361 /*lb_count*/0,
1362 SSD_FULL_SIZE,
1363 da_default_timeout*1000);
1364 break;
1365 }
1366 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1367
1368 /*
1369 * Block out any asyncronous callbacks
1370 * while we touch the pending ccb list.
1371 */
1372 LIST_INSERT_HEAD(&softc->pending_ccbs,
1373 &start_ccb->ccb_h, periph_links.le);
1374 softc->outstanding_cmds++;
1375
1376 /* We expect a unit attention from this device */
1377 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1378 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1379 softc->flags &= ~DA_FLAG_RETRY_UA;
1380 }
1381
1382 start_ccb->ccb_h.ccb_bp = bp;
1383 bp = bioq_first(&softc->bio_queue);
1384
1385 xpt_action(start_ccb);
1386 }
1387
1388 if (bp != NULL) {
1389 /* Have more work to do, so ensure we stay scheduled */
1390 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1391 }
1392 break;
1393 }
1394 case DA_STATE_PROBE:
1395 {
1396 struct ccb_scsiio *csio;
1397 struct scsi_read_capacity_data *rcap;
1398
1399 rcap = (struct scsi_read_capacity_data *)
1400 malloc(sizeof(*rcap), M_SCSIDA, M_NOWAIT|M_ZERO);
1401 if (rcap == NULL) {
1402 printf("dastart: Couldn't malloc read_capacity data\n");
1403 /* da_free_periph??? */
1404 break;
1405 }
1406 csio = &start_ccb->csio;
1407 scsi_read_capacity(csio,
1408 /*retries*/4,
1409 dadone,
1410 MSG_SIMPLE_Q_TAG,
1411 rcap,
1412 SSD_FULL_SIZE,
1413 /*timeout*/5000);
1414 start_ccb->ccb_h.ccb_bp = NULL;
1415 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1416 xpt_action(start_ccb);
1417 break;
1418 }
1419 case DA_STATE_PROBE2:
1420 {
1421 struct ccb_scsiio *csio;
1422 struct scsi_read_capacity_data_long *rcaplong;
1423
1424 rcaplong = (struct scsi_read_capacity_data_long *)
1425 malloc(sizeof(*rcaplong), M_SCSIDA, M_NOWAIT|M_ZERO);
1426 if (rcaplong == NULL) {
1427 printf("dastart: Couldn't malloc read_capacity data\n");
1428 /* da_free_periph??? */
1429 break;
1430 }
1431 csio = &start_ccb->csio;
1432 scsi_read_capacity_16(csio,
1433 /*retries*/ 4,
1434 /*cbfcnp*/ dadone,
1435 /*tag_action*/ MSG_SIMPLE_Q_TAG,
1436 /*lba*/ 0,
1437 /*reladr*/ 0,
1438 /*pmi*/ 0,
1439 rcaplong,
1440 /*sense_len*/ SSD_FULL_SIZE,
1441 /*timeout*/ 60000);
1442 start_ccb->ccb_h.ccb_bp = NULL;
1443 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1444 xpt_action(start_ccb);
1445 break;
1446 }
1447 }
1448 }
1449
1450 static int
1451 cmd6workaround(union ccb *ccb)
1452 {
1453 struct scsi_rw_6 cmd6;
1454 struct scsi_rw_10 *cmd10;
1455 struct da_softc *softc;
1456 u_int8_t *cdb;
1457 int frozen;
1458
1459 cdb = ccb->csio.cdb_io.cdb_bytes;
1460
1461 /* Translation only possible if CDB is an array and cmd is R/W6 */
1462 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1463 (*cdb != READ_6 && *cdb != WRITE_6))
1464 return 0;
1465
1466 xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1467 "increasing minimum_cmd_size to 10.\n");
1468 softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1469 softc->minimum_cmd_size = 10;
1470
1471 bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1472 cmd10 = (struct scsi_rw_10 *)cdb;
1473 cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1474 cmd10->byte2 = 0;
1475 scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1476 cmd10->reserved = 0;
1477 scsi_ulto2b(cmd6.length, cmd10->length);
1478 cmd10->control = cmd6.control;
1479 ccb->csio.cdb_len = sizeof(*cmd10);
1480
1481 /* Requeue request, unfreezing queue if necessary */
1482 frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1483 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1484 xpt_action(ccb);
1485 if (frozen) {
1486 cam_release_devq(ccb->ccb_h.path,
1487 /*relsim_flags*/0,
1488 /*reduction*/0,
1489 /*timeout*/0,
1490 /*getcount_only*/0);
1491 }
1492 return (ERESTART);
1493 }
1494
1495 static void
1496 dadone(struct cam_periph *periph, union ccb *done_ccb)
1497 {
1498 struct da_softc *softc;
1499 struct ccb_scsiio *csio;
1500 u_int32_t priority;
1501
1502 softc = (struct da_softc *)periph->softc;
1503 priority = done_ccb->ccb_h.pinfo.priority;
1504 csio = &done_ccb->csio;
1505 switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1506 case DA_CCB_BUFFER_IO:
1507 {
1508 struct bio *bp;
1509
1510 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1511 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1512 int error;
1513 int sf;
1514
1515 if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1516 sf = SF_RETRY_UA;
1517 else
1518 sf = 0;
1519
1520 error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1521 if (error == ERESTART) {
1522 /*
1523 * A retry was scheuled, so
1524 * just return.
1525 */
1526 return;
1527 }
1528 if (error != 0) {
1529
1530 if (error == ENXIO) {
1531 /*
1532 * Catastrophic error. Mark our pack as
1533 * invalid.
1534 */
1535 /*
1536 * XXX See if this is really a media
1537 * XXX change first?
1538 */
1539 xpt_print(periph->path,
1540 "Invalidating pack\n");
1541 softc->flags |= DA_FLAG_PACK_INVALID;
1542 }
1543
1544 /*
1545 * return all queued I/O with EIO, so that
1546 * the client can retry these I/Os in the
1547 * proper order should it attempt to recover.
1548 */
1549 bioq_flush(&softc->bio_queue, NULL, EIO);
1550 bp->bio_error = error;
1551 bp->bio_resid = bp->bio_bcount;
1552 bp->bio_flags |= BIO_ERROR;
1553 } else {
1554 bp->bio_resid = csio->resid;
1555 bp->bio_error = 0;
1556 if (bp->bio_resid != 0)
1557 bp->bio_flags |= BIO_ERROR;
1558 }
1559 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1560 cam_release_devq(done_ccb->ccb_h.path,
1561 /*relsim_flags*/0,
1562 /*reduction*/0,
1563 /*timeout*/0,
1564 /*getcount_only*/0);
1565 } else {
1566 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1567 panic("REQ_CMP with QFRZN");
1568 bp->bio_resid = csio->resid;
1569 if (csio->resid > 0)
1570 bp->bio_flags |= BIO_ERROR;
1571 }
1572
1573 /*
1574 * Block out any asyncronous callbacks
1575 * while we touch the pending ccb list.
1576 */
1577 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1578 softc->outstanding_cmds--;
1579 if (softc->outstanding_cmds == 0)
1580 softc->flags |= DA_FLAG_WENT_IDLE;
1581
1582 biodone(bp);
1583 break;
1584 }
1585 case DA_CCB_PROBE:
1586 case DA_CCB_PROBE2:
1587 {
1588 struct scsi_read_capacity_data *rdcap;
1589 struct scsi_read_capacity_data_long *rcaplong;
1590 char announce_buf[80];
1591
1592 rdcap = NULL;
1593 rcaplong = NULL;
1594 if (softc->state == DA_STATE_PROBE)
1595 rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1596 else
1597 rcaplong = (struct scsi_read_capacity_data_long *)
1598 csio->data_ptr;
1599
1600 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1601 struct disk_params *dp;
1602 uint32_t block_size;
1603 uint64_t maxsector;
1604
1605 if (softc->state == DA_STATE_PROBE) {
1606 block_size = scsi_4btoul(rdcap->length);
1607 maxsector = scsi_4btoul(rdcap->addr);
1608
1609 /*
1610 * According to SBC-2, if the standard 10
1611 * byte READ CAPACITY command returns 2^32,
1612 * we should issue the 16 byte version of
1613 * the command, since the device in question
1614 * has more sectors than can be represented
1615 * with the short version of the command.
1616 */
1617 if (maxsector == 0xffffffff) {
1618 softc->state = DA_STATE_PROBE2;
1619 free(rdcap, M_SCSIDA);
1620 xpt_release_ccb(done_ccb);
1621 xpt_schedule(periph, priority);
1622 return;
1623 }
1624 } else {
1625 block_size = scsi_4btoul(rcaplong->length);
1626 maxsector = scsi_8btou64(rcaplong->addr);
1627 }
1628
1629 /*
1630 * Because GEOM code just will panic us if we
1631 * give them an 'illegal' value we'll avoid that
1632 * here.
1633 */
1634 if (block_size == 0 && maxsector == 0) {
1635 snprintf(announce_buf, sizeof(announce_buf),
1636 "0MB (no media?)");
1637 } else if (block_size >= MAXPHYS || block_size == 0) {
1638 xpt_print(periph->path,
1639 "unsupportable block size %ju\n",
1640 (uintmax_t) block_size);
1641 announce_buf[0] = '\0';
1642 cam_periph_invalidate(periph);
1643 } else {
1644 dasetgeom(periph, block_size, maxsector);
1645 dp = &softc->params;
1646 snprintf(announce_buf, sizeof(announce_buf),
1647 "%juMB (%ju %u byte sectors: %dH %dS/T "
1648 "%dC)", (uintmax_t)
1649 (((uintmax_t)dp->secsize *
1650 dp->sectors) / (1024*1024)),
1651 (uintmax_t)dp->sectors,
1652 dp->secsize, dp->heads,
1653 dp->secs_per_track, dp->cylinders);
1654 }
1655 } else {
1656 int error;
1657
1658 announce_buf[0] = '\0';
1659
1660 /*
1661 * Retry any UNIT ATTENTION type errors. They
1662 * are expected at boot.
1663 */
1664 error = daerror(done_ccb, CAM_RETRY_SELTO,
1665 SF_RETRY_UA|SF_NO_PRINT);
1666 if (error == ERESTART) {
1667 /*
1668 * A retry was scheuled, so
1669 * just return.
1670 */
1671 return;
1672 } else if (error != 0) {
1673 struct scsi_sense_data *sense;
1674 int asc, ascq;
1675 int sense_key, error_code;
1676 int have_sense;
1677 cam_status status;
1678 struct ccb_getdev cgd;
1679
1680 /* Don't wedge this device's queue */
1681 status = done_ccb->ccb_h.status;
1682 if ((status & CAM_DEV_QFRZN) != 0)
1683 cam_release_devq(done_ccb->ccb_h.path,
1684 /*relsim_flags*/0,
1685 /*reduction*/0,
1686 /*timeout*/0,
1687 /*getcount_only*/0);
1688
1689
1690 xpt_setup_ccb(&cgd.ccb_h,
1691 done_ccb->ccb_h.path,
1692 CAM_PRIORITY_NORMAL);
1693 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1694 xpt_action((union ccb *)&cgd);
1695
1696 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1697 || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1698 || ((status & CAM_AUTOSNS_VALID) == 0))
1699 have_sense = FALSE;
1700 else
1701 have_sense = TRUE;
1702
1703 if (have_sense) {
1704 sense = &csio->sense_data;
1705 scsi_extract_sense(sense, &error_code,
1706 &sense_key,
1707 &asc, &ascq);
1708 }
1709 /*
1710 * Attach to anything that claims to be a
1711 * direct access or optical disk device,
1712 * as long as it doesn't return a "Logical
1713 * unit not supported" (0x25) error.
1714 */
1715 if ((have_sense) && (asc != 0x25)
1716 && (error_code == SSD_CURRENT_ERROR)) {
1717 const char *sense_key_desc;
1718 const char *asc_desc;
1719
1720 scsi_sense_desc(sense_key, asc, ascq,
1721 &cgd.inq_data,
1722 &sense_key_desc,
1723 &asc_desc);
1724 snprintf(announce_buf,
1725 sizeof(announce_buf),
1726 "Attempt to query device "
1727 "size failed: %s, %s",
1728 sense_key_desc,
1729 asc_desc);
1730 } else {
1731 if (have_sense)
1732 scsi_sense_print(
1733 &done_ccb->csio);
1734 else {
1735 xpt_print(periph->path,
1736 "got CAM status %#x\n",
1737 done_ccb->ccb_h.status);
1738 }
1739
1740 xpt_print(periph->path, "fatal error, "
1741 "failed to attach to device\n");
1742
1743 /*
1744 * Free up resources.
1745 */
1746 cam_periph_invalidate(periph);
1747 }
1748 }
1749 }
1750 free(csio->data_ptr, M_SCSIDA);
1751 if (announce_buf[0] != '\0') {
1752 xpt_announce_periph(periph, announce_buf);
1753 /*
1754 * Create our sysctl variables, now that we know
1755 * we have successfully attached.
1756 */
1757 taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1758 }
1759 softc->state = DA_STATE_NORMAL;
1760 /*
1761 * Since our peripheral may be invalidated by an error
1762 * above or an external event, we must release our CCB
1763 * before releasing the probe lock on the peripheral.
1764 * The peripheral will only go away once the last lock
1765 * is removed, and we need it around for the CCB release
1766 * operation.
1767 */
1768 xpt_release_ccb(done_ccb);
1769 cam_periph_unhold(periph);
1770 return;
1771 }
1772 case DA_CCB_WAITING:
1773 {
1774 /* Caller will release the CCB */
1775 wakeup(&done_ccb->ccb_h.cbfcnp);
1776 return;
1777 }
1778 case DA_CCB_DUMP:
1779 /* No-op. We're polling */
1780 return;
1781 default:
1782 break;
1783 }
1784 xpt_release_ccb(done_ccb);
1785 }
1786
1787 static int
1788 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1789 {
1790 struct da_softc *softc;
1791 struct cam_periph *periph;
1792 int error;
1793
1794 periph = xpt_path_periph(ccb->ccb_h.path);
1795 softc = (struct da_softc *)periph->softc;
1796
1797 /*
1798 * Automatically detect devices that do not support
1799 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1800 */
1801 error = 0;
1802 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1803 error = cmd6workaround(ccb);
1804 } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1805 CAM_SCSI_STATUS_ERROR)
1806 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1807 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1808 && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1809 && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1810 int sense_key, error_code, asc, ascq;
1811
1812 scsi_extract_sense(&ccb->csio.sense_data,
1813 &error_code, &sense_key, &asc, &ascq);
1814 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1815 error = cmd6workaround(ccb);
1816 }
1817 if (error == ERESTART)
1818 return (ERESTART);
1819
1820 /*
1821 * XXX
1822 * Until we have a better way of doing pack validation,
1823 * don't treat UAs as errors.
1824 */
1825 sense_flags |= SF_RETRY_UA;
1826 return(cam_periph_error(ccb, cam_flags, sense_flags,
1827 &softc->saved_ccb));
1828 }
1829
1830 static void
1831 daprevent(struct cam_periph *periph, int action)
1832 {
1833 struct da_softc *softc;
1834 union ccb *ccb;
1835 int error;
1836
1837 softc = (struct da_softc *)periph->softc;
1838
1839 if (((action == PR_ALLOW)
1840 && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1841 || ((action == PR_PREVENT)
1842 && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1843 return;
1844 }
1845
1846 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1847
1848 scsi_prevent(&ccb->csio,
1849 /*retries*/1,
1850 /*cbcfp*/dadone,
1851 MSG_SIMPLE_Q_TAG,
1852 action,
1853 SSD_FULL_SIZE,
1854 5000);
1855
1856 error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
1857 SF_RETRY_UA, softc->disk->d_devstat);
1858
1859 if (error == 0) {
1860 if (action == PR_ALLOW)
1861 softc->flags &= ~DA_FLAG_PACK_LOCKED;
1862 else
1863 softc->flags |= DA_FLAG_PACK_LOCKED;
1864 }
1865
1866 xpt_release_ccb(ccb);
1867 }
1868
1869 static int
1870 dagetcapacity(struct cam_periph *periph)
1871 {
1872 struct da_softc *softc;
1873 union ccb *ccb;
1874 struct scsi_read_capacity_data *rcap;
1875 struct scsi_read_capacity_data_long *rcaplong;
1876 uint32_t block_len;
1877 uint64_t maxsector;
1878 int error;
1879 u_int32_t sense_flags;
1880
1881 softc = (struct da_softc *)periph->softc;
1882 block_len = 0;
1883 maxsector = 0;
1884 error = 0;
1885 sense_flags = SF_RETRY_UA;
1886 if (softc->flags & DA_FLAG_PACK_REMOVABLE)
1887 sense_flags |= SF_NO_PRINT;
1888
1889 /* Do a read capacity */
1890 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcaplong),
1891 M_SCSIDA,
1892 M_NOWAIT);
1893 if (rcap == NULL)
1894 return (ENOMEM);
1895
1896 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1897 scsi_read_capacity(&ccb->csio,
1898 /*retries*/4,
1899 /*cbfncp*/dadone,
1900 MSG_SIMPLE_Q_TAG,
1901 rcap,
1902 SSD_FULL_SIZE,
1903 /*timeout*/60000);
1904 ccb->ccb_h.ccb_bp = NULL;
1905
1906 error = cam_periph_runccb(ccb, daerror,
1907 /*cam_flags*/CAM_RETRY_SELTO,
1908 sense_flags,
1909 softc->disk->d_devstat);
1910
1911 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1912 cam_release_devq(ccb->ccb_h.path,
1913 /*relsim_flags*/0,
1914 /*reduction*/0,
1915 /*timeout*/0,
1916 /*getcount_only*/0);
1917
1918 if (error == 0) {
1919 block_len = scsi_4btoul(rcap->length);
1920 maxsector = scsi_4btoul(rcap->addr);
1921
1922 if (maxsector != 0xffffffff)
1923 goto done;
1924 } else
1925 goto done;
1926
1927 rcaplong = (struct scsi_read_capacity_data_long *)rcap;
1928
1929 scsi_read_capacity_16(&ccb->csio,
1930 /*retries*/ 4,
1931 /*cbfcnp*/ dadone,
1932 /*tag_action*/ MSG_SIMPLE_Q_TAG,
1933 /*lba*/ 0,
1934 /*reladr*/ 0,
1935 /*pmi*/ 0,
1936 rcaplong,
1937 /*sense_len*/ SSD_FULL_SIZE,
1938 /*timeout*/ 60000);
1939 ccb->ccb_h.ccb_bp = NULL;
1940
1941 error = cam_periph_runccb(ccb, daerror,
1942 /*cam_flags*/CAM_RETRY_SELTO,
1943 sense_flags,
1944 softc->disk->d_devstat);
1945
1946 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1947 cam_release_devq(ccb->ccb_h.path,
1948 /*relsim_flags*/0,
1949 /*reduction*/0,
1950 /*timeout*/0,
1951 /*getcount_only*/0);
1952
1953 if (error == 0) {
1954 block_len = scsi_4btoul(rcaplong->length);
1955 maxsector = scsi_8btou64(rcaplong->addr);
1956 }
1957
1958 done:
1959
1960 if (error == 0) {
1961 if (block_len >= MAXPHYS || block_len == 0) {
1962 xpt_print(periph->path,
1963 "unsupportable block size %ju\n",
1964 (uintmax_t) block_len);
1965 error = EINVAL;
1966 } else
1967 dasetgeom(periph, block_len, maxsector);
1968 }
1969
1970 xpt_release_ccb(ccb);
1971
1972 free(rcap, M_SCSIDA);
1973
1974 return (error);
1975 }
1976
1977 static void
1978 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
1979 {
1980 struct ccb_calc_geometry ccg;
1981 struct da_softc *softc;
1982 struct disk_params *dp;
1983
1984 softc = (struct da_softc *)periph->softc;
1985
1986 dp = &softc->params;
1987 dp->secsize = block_len;
1988 dp->sectors = maxsector + 1;
1989 /*
1990 * Have the controller provide us with a geometry
1991 * for this disk. The only time the geometry
1992 * matters is when we boot and the controller
1993 * is the only one knowledgeable enough to come
1994 * up with something that will make this a bootable
1995 * device.
1996 */
1997 xpt_setup_ccb(&ccg.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1998 ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1999 ccg.block_size = dp->secsize;
2000 ccg.volume_size = dp->sectors;
2001 ccg.heads = 0;
2002 ccg.secs_per_track = 0;
2003 ccg.cylinders = 0;
2004 xpt_action((union ccb*)&ccg);
2005 if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2006 /*
2007 * We don't know what went wrong here- but just pick
2008 * a geometry so we don't have nasty things like divide
2009 * by zero.
2010 */
2011 dp->heads = 255;
2012 dp->secs_per_track = 255;
2013 dp->cylinders = dp->sectors / (255 * 255);
2014 if (dp->cylinders == 0) {
2015 dp->cylinders = 1;
2016 }
2017 } else {
2018 dp->heads = ccg.heads;
2019 dp->secs_per_track = ccg.secs_per_track;
2020 dp->cylinders = ccg.cylinders;
2021 }
2022 }
2023
2024 static void
2025 dasendorderedtag(void *arg)
2026 {
2027 struct da_softc *softc = arg;
2028
2029 if (da_send_ordered) {
2030 if ((softc->ordered_tag_count == 0)
2031 && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2032 softc->flags |= DA_FLAG_NEED_OTAG;
2033 }
2034 if (softc->outstanding_cmds > 0)
2035 softc->flags &= ~DA_FLAG_WENT_IDLE;
2036
2037 softc->ordered_tag_count = 0;
2038 }
2039 /* Queue us up again */
2040 callout_reset(&softc->sendordered_c,
2041 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
2042 dasendorderedtag, softc);
2043 }
2044
2045 /*
2046 * Step through all DA peripheral drivers, and if the device is still open,
2047 * sync the disk cache to physical media.
2048 */
2049 static void
2050 dashutdown(void * arg, int howto)
2051 {
2052 struct cam_periph *periph;
2053 struct da_softc *softc;
2054
2055 TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2056 union ccb ccb;
2057
2058 cam_periph_lock(periph);
2059 softc = (struct da_softc *)periph->softc;
2060
2061 /*
2062 * We only sync the cache if the drive is still open, and
2063 * if the drive is capable of it..
2064 */
2065 if (((softc->flags & DA_FLAG_OPEN) == 0)
2066 || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2067 cam_periph_unlock(periph);
2068 continue;
2069 }
2070
2071 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
2072
2073 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2074 scsi_synchronize_cache(&ccb.csio,
2075 /*retries*/1,
2076 /*cbfcnp*/dadone,
2077 MSG_SIMPLE_Q_TAG,
2078 /*begin_lba*/0, /* whole disk */
2079 /*lb_count*/0,
2080 SSD_FULL_SIZE,
2081 60 * 60 * 1000);
2082
2083 xpt_polled_action(&ccb);
2084
2085 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2086 if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2087 CAM_SCSI_STATUS_ERROR)
2088 && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2089 int error_code, sense_key, asc, ascq;
2090
2091 scsi_extract_sense(&ccb.csio.sense_data,
2092 &error_code, &sense_key,
2093 &asc, &ascq);
2094
2095 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2096 scsi_sense_print(&ccb.csio);
2097 } else {
2098 xpt_print(periph->path, "Synchronize "
2099 "cache failed, status == 0x%x, scsi status "
2100 "== 0x%x\n", ccb.ccb_h.status,
2101 ccb.csio.scsi_status);
2102 }
2103 }
2104
2105 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2106 cam_release_devq(ccb.ccb_h.path,
2107 /*relsim_flags*/0,
2108 /*reduction*/0,
2109 /*timeout*/0,
2110 /*getcount_only*/0);
2111 cam_periph_unlock(periph);
2112 }
2113 }
2114
2115 #else /* !_KERNEL */
2116
2117 /*
2118 * XXX This is only left out of the kernel build to silence warnings. If,
2119 * for some reason this function is used in the kernel, the ifdefs should
2120 * be moved so it is included both in the kernel and userland.
2121 */
2122 void
2123 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2124 void (*cbfcnp)(struct cam_periph *, union ccb *),
2125 u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2126 u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2127 u_int32_t timeout)
2128 {
2129 struct scsi_format_unit *scsi_cmd;
2130
2131 scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2132 scsi_cmd->opcode = FORMAT_UNIT;
2133 scsi_cmd->byte2 = byte2;
2134 scsi_ulto2b(ileave, scsi_cmd->interleave);
2135
2136 cam_fill_csio(csio,
2137 retries,
2138 cbfcnp,
2139 /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2140 tag_action,
2141 data_ptr,
2142 dxfer_len,
2143 sense_len,
2144 sizeof(*scsi_cmd),
2145 timeout);
2146 }
2147
2148 #endif /* _KERNEL */
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