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Sync CAM with FreeBSD using lockmgr locks instead of mutexes.
[dragonfly.git] / sys / bus / cam / scsi / scsi_da.c
blob6bd266e0719f57c904ff423f802fd3576973f228
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 1.56 2008/05/18 20:30:20 pavalos 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 "../cam.h"
64 #include "../cam_ccb.h"
65 #include "../cam_extend.h"
66 #include "../cam_periph.h"
67 #include "../cam_xpt_periph.h"
68 #include "../cam_sim.h"
69
70 #include "scsi_message.h"
71
72 #ifndef _KERNEL
73 #include "scsi_da.h"
74 #endif /* !_KERNEL */
75
76 #ifdef _KERNEL
77 typedef enum {
78 DA_STATE_PROBE,
79 DA_STATE_PROBE2,
80 DA_STATE_NORMAL
81 } da_state;
82
83 typedef enum {
84 DA_FLAG_PACK_INVALID = 0x001,
85 DA_FLAG_NEW_PACK = 0x002,
86 DA_FLAG_PACK_LOCKED = 0x004,
87 DA_FLAG_PACK_REMOVABLE = 0x008,
88 DA_FLAG_TAGGED_QUEUING = 0x010,
89 DA_FLAG_NEED_OTAG = 0x020,
90 DA_FLAG_WENT_IDLE = 0x040,
91 DA_FLAG_RETRY_UA = 0x080,
92 DA_FLAG_OPEN = 0x100,
93 DA_FLAG_SCTX_INIT = 0x200
94 } da_flags;
95
96 typedef enum {
97 DA_Q_NONE = 0x00,
98 DA_Q_NO_SYNC_CACHE = 0x01,
99 DA_Q_NO_6_BYTE = 0x02,
100 DA_Q_NO_PREVENT = 0x04
101 } da_quirks;
102
103 typedef enum {
104 DA_CCB_PROBE = 0x01,
105 DA_CCB_PROBE2 = 0x02,
106 DA_CCB_BUFFER_IO = 0x03,
107 DA_CCB_WAITING = 0x04,
108 DA_CCB_DUMP = 0x05,
109 DA_CCB_TYPE_MASK = 0x0F,
110 DA_CCB_RETRY_UA = 0x10
111 } da_ccb_state;
112
113 /* Offsets into our private area for storing information */
114 #define ccb_state ppriv_field0
115 #define ccb_bio ppriv_ptr1
116
117 struct disk_params {
118 u_int8_t heads;
119 u_int32_t cylinders;
120 u_int8_t secs_per_track;
121 u_int32_t secsize; /* Number of bytes/sector */
122 u_int64_t sectors; /* total number sectors */
123 };
124
125 struct da_softc {
126 struct bio_queue_head bio_queue;
127 struct devstat device_stats;
128 SLIST_ENTRY(da_softc) links;
129 LIST_HEAD(, ccb_hdr) pending_ccbs;
130 da_state state;
131 da_flags flags;
132 da_quirks quirks;
133 int minimum_cmd_size;
134 int ordered_tag_count;
135 int outstanding_cmds;
136 struct disk_params params;
137 struct disk disk;
138 union ccb saved_ccb;
139 struct task sysctl_task;
140 struct sysctl_ctx_list sysctl_ctx;
141 struct sysctl_oid *sysctl_tree;
142 struct callout sendordered_c;
143 };
144
145 struct da_quirk_entry {
146 struct scsi_inquiry_pattern inq_pat;
147 da_quirks quirks;
148 };
149
150 static const char quantum[] = "QUANTUM";
151 static const char microp[] = "MICROP";
152
153 static struct da_quirk_entry da_quirk_table[] =
154 {
155 /* SPI, FC devices */
156 {
157 /*
158 * Fujitsu M2513A MO drives.
159 * Tested devices: M2513A2 firmware versions 1200 & 1300.
160 * (dip switch selects whether T_DIRECT or T_OPTICAL device)
161 * Reported by: W.Scholten <whs@xs4all.nl>
162 */
163 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
164 /*quirks*/ DA_Q_NO_SYNC_CACHE
165 },
166 {
167 /* See above. */
168 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
169 /*quirks*/ DA_Q_NO_SYNC_CACHE
170 },
171 {
172 /*
173 * This particular Fujitsu drive doesn't like the
174 * synchronize cache command.
175 * Reported by: Tom Jackson <toj@gorilla.net>
176 */
177 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
178 /*quirks*/ DA_Q_NO_SYNC_CACHE
179 },
180 {
181 /*
182 * This drive doesn't like the synchronize cache command
183 * either. Reported by: Matthew Jacob <mjacob@feral.com>
184 * in NetBSD PR kern/6027, August 24, 1998.
185 */
186 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
187 /*quirks*/ DA_Q_NO_SYNC_CACHE
188 },
189 {
190 /*
191 * This drive doesn't like the synchronize cache command
192 * either. Reported by: Hellmuth Michaelis (hm@kts.org)
193 * (PR 8882).
194 */
195 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
196 /*quirks*/ DA_Q_NO_SYNC_CACHE
197 },
198 {
199 /*
200 * Doesn't like the synchronize cache command.
201 * Reported by: Blaz Zupan <blaz@gold.amis.net>
202 */
203 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
204 /*quirks*/ DA_Q_NO_SYNC_CACHE
205 },
206 {
207 /*
208 * Doesn't like the synchronize cache command.
209 * Reported by: Blaz Zupan <blaz@gold.amis.net>
210 */
211 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
212 /*quirks*/ DA_Q_NO_SYNC_CACHE
213 },
214 {
215 /*
216 * Doesn't like the synchronize cache command.
217 */
218 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
219 /*quirks*/ DA_Q_NO_SYNC_CACHE
220 },
221 {
222 /*
223 * Doesn't like the synchronize cache command.
224 * Reported by: walter@pelissero.de
225 */
226 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"},
227 /*quirks*/ DA_Q_NO_SYNC_CACHE
228 },
229 {
230 /*
231 * Doesn't work correctly with 6 byte reads/writes.
232 * Returns illegal request, and points to byte 9 of the
233 * 6-byte CDB.
234 * Reported by: Adam McDougall <bsdx@spawnet.com>
235 */
236 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
237 /*quirks*/ DA_Q_NO_6_BYTE
238 },
239 {
240 /* See above. */
241 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
242 /*quirks*/ DA_Q_NO_6_BYTE
243 },
244 {
245 /*
246 * Doesn't like the synchronize cache command.
247 * Reported by: walter@pelissero.de
248 */
249 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
250 /*quirks*/ DA_Q_NO_SYNC_CACHE
251 },
252 {
253 /*
254 * The CISS RAID controllers do not support SYNC_CACHE
255 */
256 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
257 /*quirks*/ DA_Q_NO_SYNC_CACHE
258 },
259 /* USB mass storage devices supported by umass(4) */
260 {
261 /*
262 * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
263 * PR: kern/51675
264 */
265 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
266 /*quirks*/ DA_Q_NO_SYNC_CACHE
267 },
268 {
269 /*
270 * Power Quotient Int. (PQI) USB flash key
271 * PR: kern/53067
272 */
273 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "USB Flash Disk*",
274 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
275 },
276 {
277 /*
278 * Creative Nomad MUVO mp3 player (USB)
279 * PR: kern/53094
280 */
281 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
282 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
283 },
284 {
285 /*
286 * Jungsoft NEXDISK USB flash key
287 * PR: kern/54737
288 */
289 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
290 /*quirks*/ DA_Q_NO_SYNC_CACHE
291 },
292 {
293 /*
294 * FreeDik USB Mini Data Drive
295 * PR: kern/54786
296 */
297 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FreeDik*", "Mini Data Drive",
298 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
299 },
300 {
301 /*
302 * Sigmatel USB Flash MP3 Player
303 * PR: kern/57046
304 */
305 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"},
306 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
307 },
308 {
309 /*
310 * Neuros USB Digital Audio Computer
311 * PR: kern/63645
312 */
313 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NEUROS", "dig. audio comp.",
314 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
315 },
316 {
317 /*
318 * SEAGRAND NP-900 MP3 Player
319 * PR: kern/64563
320 */
321 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"},
322 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
323 },
324 {
325 /*
326 * iRiver iFP MP3 player (with UMS Firmware)
327 * PR: kern/54881, i386/63941, kern/66124
328 */
329 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
330 /*quirks*/ DA_Q_NO_SYNC_CACHE
331 },
332 {
333 /*
334 * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
335 * PR: kern/70158
336 */
337 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "Nex*", "*"},
338 /*quirks*/ DA_Q_NO_SYNC_CACHE
339 },
340 {
341 /*
342 * ZICPlay USB MP3 Player with FM
343 * PR: kern/75057
344 */
345 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ACTIONS*" , "USB DISK*", "*"},
346 /*quirks*/ DA_Q_NO_SYNC_CACHE
347 },
348 {
349 /*
350 * TEAC USB floppy mechanisms
351 */
352 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TEAC" , "FD-05*", "*"},
353 /*quirks*/ DA_Q_NO_SYNC_CACHE
354 },
355 {
356 /*
357 * Kingston DataTraveler II+ USB Pen-Drive.
358 * Reported by: Pawel Jakub Dawidek <pjd@FreeBSD.org>
359 */
360 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston" , "DataTraveler II+",
361 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
362 },
363 {
364 /*
365 * Motorola E398 Mobile Phone (TransFlash memory card).
366 * Reported by: Wojciech A. Koszek <dunstan@FreeBSD.czest.pl>
367 * PR: usb/89889
368 */
369 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Motorola" , "Motorola Phone",
370 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
371 },
372 {
373 /*
374 * Qware BeatZkey! Pro
375 * PR: usb/79164
376 */
377 {T_DIRECT, SIP_MEDIA_REMOVABLE, "GENERIC", "USB DISK DEVICE",
378 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
379 },
380 {
381 /*
382 * Time DPA20B 1GB MP3 Player
383 * PR: usb/81846
384 */
385 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB2.0*", "(FS) FLASH DISK*",
386 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
387 },
388 {
389 /*
390 * Samsung USB key 128Mb
391 * PR: usb/90081
392 */
393 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB-DISK", "FreeDik-FlashUsb",
394 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
395 },
396 {
397 /*
398 * Kingston DataTraveler 2.0 USB Flash memory.
399 * PR: usb/89196
400 */
401 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston", "DataTraveler 2.0",
402 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
403 },
404 {
405 /*
406 * Creative MUVO Slim mp3 player (USB)
407 * PR: usb/86131
408 */
409 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim",
410 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
411 },
412 {
413 /*
414 * United MP5512 Portable MP3 Player (2-in-1 USB DISK/MP3)
415 * PR: usb/80487
416 */
417 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "MUSIC DISK",
418 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
419 },
420 {
421 /*
422 * SanDisk Micro Cruzer 128MB
423 * PR: usb/75970
424 */
425 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk" , "Micro Cruzer",
426 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
427 },
428 {
429 /*
430 * TOSHIBA TransMemory USB sticks
431 * PR: kern/94660
432 */
433 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TOSHIBA", "TransMemory",
434 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
435 },
436 {
437 /*
438 * PNY USB Flash keys
439 * PR: usb/75578, usb/72344, usb/65436
440 */
441 {T_DIRECT, SIP_MEDIA_REMOVABLE, "*" , "USB DISK*",
442 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
443 },
444 {
445 /*
446 * Genesys 6-in-1 Card Reader
447 * PR: usb/94647
448 */
449 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "STORAGE DEVICE*",
450 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
451 },
452 {
453 /*
454 * Rekam Digital CAMERA
455 * PR: usb/98713
456 */
457 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CAMERA*", "4MP-9J6*",
458 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
459 },
460 {
461 /*
462 * iRiver H10 MP3 player
463 * PR: usb/102547
464 */
465 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "H10*",
466 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
467 },
468 {
469 /*
470 * iRiver U10 MP3 player
471 * PR: usb/92306
472 */
473 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "U10*",
474 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
475 },
476 {
477 /*
478 * X-Micro Flash Disk
479 * PR: usb/96901
480 */
481 {T_DIRECT, SIP_MEDIA_REMOVABLE, "X-Micro", "Flash Disk",
482 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
483 },
484 {
485 /*
486 * EasyMP3 EM732X USB 2.0 Flash MP3 Player
487 * PR: usb/96546
488 */
489 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EM732X", "MP3 Player*",
490 "1.00"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
491 },
492 {
493 /*
494 * Denver MP3 player
495 * PR: usb/107101
496 */
497 {T_DIRECT, SIP_MEDIA_REMOVABLE, "DENVER", "MP3 PLAYER",
498 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
499 },
500 {
501 /*
502 * Philips USB Key Audio KEY013
503 * PR: usb/68412
504 */
505 {T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"},
506 /*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
507 },
508 {
509 /*
510 * JNC MP3 Player
511 * PR: usb/94439
512 */
513 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JNC*" , "MP3 Player*",
514 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
515 },
516 {
517 /*
518 * SAMSUNG MP0402H
519 * PR: usb/108427
520 */
521 {T_DIRECT, SIP_MEDIA_FIXED, "SAMSUNG", "MP0402H", "*"},
522 /*quirks*/ DA_Q_NO_SYNC_CACHE
523 },
524 {
525 /*
526 * I/O Magic USB flash - Giga Bank
527 * PR: usb/108810
528 */
529 {T_DIRECT, SIP_MEDIA_FIXED, "GS-Magic", "stor*", "*"},
530 /*quirks*/ DA_Q_NO_SYNC_CACHE
531 },
532 {
533 /*
534 * JoyFly 128mb USB Flash Drive
535 * PR: 96133
536 */
537 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "Flash Disk*",
538 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
539 },
540 {
541 /*
542 * ChipsBnk usb stick
543 * PR: 103702
544 */
545 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ChipsBnk", "USB*",
546 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
547 },
548 {
549 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Netac", "OnlyDisk*",
550 "2000"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
551 },
552 {
553 /*
554 * USB 2.0 (HS) Flash Disk MP3 player
555 */
556 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "(HS) Flash Disk", "*"},
557 /*quirks*/ DA_Q_NO_SYNC_CACHE
558 },
559 };
560
561 static d_open_t daopen;
562 static d_close_t daclose;
563 static d_strategy_t dastrategy;
564 static d_dump_t dadump;
565 static periph_init_t dainit;
566 static void daasync(void *callback_arg, u_int32_t code,
567 struct cam_path *path, void *arg);
568 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
569 static periph_ctor_t daregister;
570 static periph_dtor_t dacleanup;
571 static periph_start_t dastart;
572 static periph_oninv_t daoninvalidate;
573 static void dadone(struct cam_periph *periph,
574 union ccb *done_ccb);
575 static int daerror(union ccb *ccb, u_int32_t cam_flags,
576 u_int32_t sense_flags);
577 static void daprevent(struct cam_periph *periph, int action);
578 static int dagetcapacity(struct cam_periph *periph);
579 static void dasetgeom(struct cam_periph *periph, uint32_t block_len,
580 uint64_t maxsector);
581
582 static timeout_t dasendorderedtag;
583 static void dashutdown(void *arg, int howto);
584
585 #ifndef DA_DEFAULT_TIMEOUT
586 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */
587 #endif
588
589 #ifndef DA_DEFAULT_RETRY
590 #define DA_DEFAULT_RETRY 4
591 #endif
592
593 #ifndef DA_DEFAULT_SEND_ORDERED
594 #define DA_DEFAULT_SEND_ORDERED 1
595 #endif
596
597 static int da_retry_count = DA_DEFAULT_RETRY;
598 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
599 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
600 static struct callout dasendorderedtag_ch;
601
602 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
603 "CAM Direct Access Disk driver");
604 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
605 &da_retry_count, 0, "Normal I/O retry count");
606 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
607 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
608 &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
609 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
610 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
611 &da_send_ordered, 0, "Send Ordered Tags");
612 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
613
614 /*
615 * DA_ORDEREDTAG_INTERVAL determines how often, relative
616 * to the default timeout, we check to see whether an ordered
617 * tagged transaction is appropriate to prevent simple tag
618 * starvation. Since we'd like to ensure that there is at least
619 * 1/2 of the timeout length left for a starved transaction to
620 * complete after we've sent an ordered tag, we must poll at least
621 * four times in every timeout period. This takes care of the worst
622 * case where a starved transaction starts during an interval that
623 * meets the requirement "don't send an ordered tag" test so it takes
624 * us two intervals to determine that a tag must be sent.
625 */
626 #ifndef DA_ORDEREDTAG_INTERVAL
627 #define DA_ORDEREDTAG_INTERVAL 4
628 #endif
629
630 static struct periph_driver dadriver =
631 {
632 dainit, "da",
633 TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
634 };
635
636 PERIPHDRIVER_DECLARE(da, dadriver);
637
638 static struct dev_ops da_ops = {
639 { "da", DA_CDEV_MAJOR, D_DISK },
640 .d_open = daopen,
641 .d_close = daclose,
642 .d_read = physread,
643 .d_write = physwrite,
644 .d_strategy = dastrategy,
645 .d_dump = dadump
646 };
647
648 static struct extend_array *daperiphs;
649
650 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
651
652 static int
653 daopen(struct dev_open_args *ap)
654 {
655 cdev_t dev = ap->a_head.a_dev;
656 struct cam_periph *periph;
657 struct da_softc *softc;
658 struct disk_info info;
659 int unit;
660 int error;
661
662 unit = dkunit(dev);
663 periph = cam_extend_get(daperiphs, unit);
664 if (periph == NULL) {
665 return (ENXIO);
666 }
667
668 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
669 return(ENXIO);
670 }
671
672 cam_periph_lock(periph);
673 if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
674 cam_periph_unlock(periph);
675 cam_periph_release(periph);
676 return (error);
677 }
678
679 unit = periph->unit_number;
680 softc = (struct da_softc *)periph->softc;
681 softc->flags |= DA_FLAG_OPEN;
682
683 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
684 ("daopen: dev=%s (unit %d)\n", devtoname(dev),
685 unit));
686
687 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
688 /* Invalidate our pack information. */
689 disk_invalidate(&softc->disk);
690 softc->flags &= ~DA_FLAG_PACK_INVALID;
691 }
692
693 error = dagetcapacity(periph);
694
695 #if 0
696 /* Do a read capacity */
697 {
698 struct scsi_read_capacity_data *rcap;
699 union ccb *ccb;
700
701 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
702
703 ccb = cam_periph_getccb(periph, /*priority*/1);
704 scsi_read_capacity(&ccb->csio,
705 /*retries*/1,
706 /*cbfncp*/dadone,
707 MSG_SIMPLE_Q_TAG,
708 rcap,
709 SSD_FULL_SIZE,
710 /*timeout*/60000);
711 ccb->ccb_h.ccb_bio = NULL;
712
713 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
714 /*sense_flags*/SF_RETRY_UA |
715 SF_RETRY_SELTO,
716 &softc->device_stats);
717
718 xpt_release_ccb(ccb);
719
720 if (error == 0) {
721 dasetgeom(periph, rcap);
722 }
723
724 kfree(rcap, M_SCSIDA);
725 }
726 #endif
727
728 if (error == 0) {
729 struct ccb_getdev cgd;
730
731 /* Build disk information structure */
732 bzero(&info, sizeof(info));
733 info.d_type = DTYPE_SCSI;
734
735 /*
736 * Grab the inquiry data to get the vendor and product names.
737 * Put them in the typename and packname for the label.
738 */
739 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
740 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
741 xpt_action((union ccb *)&cgd);
742
743 #if 0
744 strncpy(label->d_typename, cgd.inq_data.vendor,
745 min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
746 strncpy(label->d_packname, cgd.inq_data.product,
747 min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
748 #endif
749
750 /*
751 * Mandatory fields
752 */
753 info.d_media_blksize = softc->params.secsize;
754 info.d_media_blocks = softc->params.sectors;
755 info.d_media_size = 0;
756
757 /*
758 * Optional fields
759 */
760 info.d_secpertrack = softc->params.secs_per_track;
761 info.d_nheads = softc->params.heads;
762 info.d_ncylinders = softc->params.cylinders;
763 info.d_secpercyl = softc->params.heads *
764 softc->params.secs_per_track;
765 disk_setdiskinfo(&softc->disk, &info);
766
767 /*
768 * Check to see whether or not the blocksize is set yet.
769 * If it isn't, set it and then clear the blocksize
770 * unavailable flag for the device statistics.
771 */
772 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
773 softc->device_stats.block_size = softc->params.secsize;
774 softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
775 }
776 }
777
778 if (error == 0) {
779 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
780 (softc->quirks & DA_Q_NO_PREVENT) == 0)
781 daprevent(periph, PR_PREVENT);
782 } else {
783 softc->flags &= ~DA_FLAG_OPEN;
784 cam_periph_release(periph);
785 }
786 cam_periph_unhold(periph);
787 cam_periph_unlock(periph);
788 return (error);
789 }
790
791 static int
792 daclose(struct dev_close_args *ap)
793 {
794 cdev_t dev = ap->a_head.a_dev;
795 struct cam_periph *periph;
796 struct da_softc *softc;
797 int unit;
798 int error;
799
800 unit = dkunit(dev);
801 periph = cam_extend_get(daperiphs, unit);
802 if (periph == NULL)
803 return (ENXIO);
804
805 cam_periph_lock(periph);
806 if ((error = cam_periph_hold(periph, 0)) != 0) {
807 cam_periph_unlock(periph);
808 cam_periph_release(periph);
809 return (error);
810 }
811
812 softc = (struct da_softc *)periph->softc;
813
814 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
815 union ccb *ccb;
816
817 ccb = cam_periph_getccb(periph, /*priority*/1);
818
819 scsi_synchronize_cache(&ccb->csio,
820 /*retries*/1,
821 /*cbfcnp*/dadone,
822 MSG_SIMPLE_Q_TAG,
823 /*begin_lba*/0,/* Cover the whole disk */
824 /*lb_count*/0,
825 SSD_FULL_SIZE,
826 5 * 60 * 1000);
827
828 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
829 /*sense_flags*/SF_RETRY_UA,
830 &softc->device_stats);
831
832 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
833 if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
834 CAM_SCSI_STATUS_ERROR) {
835 int asc, ascq;
836 int sense_key, error_code;
837
838 scsi_extract_sense(&ccb->csio.sense_data,
839 &error_code,
840 &sense_key,
841 &asc, &ascq);
842 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
843 scsi_sense_print(&ccb->csio);
844 } else {
845 xpt_print(periph->path, "Synchronize cache "
846 "failed, status == 0x%x, scsi status == "
847 "0x%x\n", ccb->csio.ccb_h.status,
848 ccb->csio.scsi_status);
849 }
850 }
851
852 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
853 cam_release_devq(ccb->ccb_h.path,
854 /*relsim_flags*/0,
855 /*reduction*/0,
856 /*timeout*/0,
857 /*getcount_only*/0);
858
859 xpt_release_ccb(ccb);
860
861 }
862
863 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
864 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
865 daprevent(periph, PR_ALLOW);
866 /*
867 * If we've got removeable media, mark the blocksize as
868 * unavailable, since it could change when new media is
869 * inserted.
870 */
871 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
872 }
873
874 /*
875 * Don't compound any ref counting software bugs with more.
876 */
877 if (softc->flags & DA_FLAG_OPEN) {
878 softc->flags &= ~DA_FLAG_OPEN;
879 cam_periph_release(periph);
880 } else {
881 xpt_print(periph->path,
882 "daclose() called on an already closed device!\n");
883 }
884 cam_periph_unhold(periph);
885 cam_periph_unlock(periph);
886 return (0);
887 }
888
889 /*
890 * Actually translate the requested transfer into one the physical driver
891 * can understand. The transfer is described by a buf and will include
892 * only one physical transfer.
893 */
894 static int
895 dastrategy(struct dev_strategy_args *ap)
896 {
897 cdev_t dev = ap->a_head.a_dev;
898 struct bio *bio = ap->a_bio;
899 struct buf *bp = bio->bio_buf;
900 struct cam_periph *periph;
901 struct da_softc *softc;
902 u_int unit;
903 u_int part;
904
905 unit = dkunit(dev);
906 part = dkpart(dev);
907 periph = cam_extend_get(daperiphs, unit);
908 if (periph == NULL) {
909 bp->b_error = ENXIO;
910 goto bad;
911 }
912 softc = (struct da_softc *)periph->softc;
913
914 cam_periph_lock(periph);
915
916 #if 0
917 /*
918 * check it's not too big a transfer for our adapter
919 */
920 scsi_minphys(bp, &sd_switch);
921 #endif
922
923 /*
924 * Mask interrupts so that the pack cannot be invalidated until
925 * after we are in the queue. Otherwise, we might not properly
926 * clean up one of the buffers.
927 */
928
929 /*
930 * If the device has been made invalid, error out
931 */
932 if ((softc->flags & DA_FLAG_PACK_INVALID)) {
933 cam_periph_unlock(periph);
934 bp->b_error = ENXIO;
935 goto bad;
936 }
937
938 /*
939 * Place it in the queue of disk activities for this disk
940 */
941 bioqdisksort(&softc->bio_queue, bio);
942
943 /*
944 * Schedule ourselves for performing the work.
945 */
946 xpt_schedule(periph, /* XXX priority */1);
947 cam_periph_unlock(periph);
948
949 return(0);
950 bad:
951 bp->b_flags |= B_ERROR;
952
953 /*
954 * Correctly set the buf to indicate a completed xfer
955 */
956 bp->b_resid = bp->b_bcount;
957 biodone(bio);
958 return(0);
959 }
960
961 static int
962 dadump(struct dev_dump_args *ap)
963 {
964 cdev_t dev = ap->a_head.a_dev;
965 struct cam_periph *periph;
966 struct da_softc *softc;
967 u_int unit;
968 long blkcnt;
969 vm_paddr_t addr;
970 struct ccb_scsiio csio;
971 int dumppages = MAXDUMPPGS;
972 int i;
973
974 /* toss any characters present prior to dump */
975 while (cncheckc() != -1)
976 ;
977
978 unit = dkunit(dev);
979 periph = cam_extend_get(daperiphs, unit);
980 if (periph == NULL) {
981 return (ENXIO);
982 }
983 softc = (struct da_softc *)periph->softc;
984
985 cam_periph_lock(periph);
986 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
987 cam_periph_unlock(periph);
988 return (ENXIO);
989 }
990
991 addr = 0; /* starting address */
992 blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
993
994 while (ap->a_count > 0) {
995 caddr_t va = NULL;
996
997 if ((ap->a_count / blkcnt) < dumppages)
998 dumppages = ap->a_count / blkcnt;
999
1000 for (i = 0; i < dumppages; ++i) {
1001 vm_paddr_t a = addr + (i * PAGE_SIZE);
1002 if (is_physical_memory(a))
1003 va = pmap_kenter_temporary(trunc_page(a), i);
1004 else
1005 va = pmap_kenter_temporary(trunc_page(0), i);
1006 }
1007
1008 periph->flags |= CAM_PERIPH_POLLED;
1009 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1010 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1011 scsi_read_write(&csio,
1012 /*retries*/1,
1013 dadone,
1014 MSG_ORDERED_Q_TAG,
1015 /*read*/FALSE,
1016 /*byte2*/0,
1017 /*minimum_cmd_size*/ softc->minimum_cmd_size,
1018 ap->a_blkno,
1019 blkcnt * dumppages,
1020 /*data_ptr*/(u_int8_t *) va,
1021 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
1022 /*sense_len*/SSD_FULL_SIZE,
1023 DA_DEFAULT_TIMEOUT * 1000);
1024 xpt_polled_action((union ccb *)&csio);
1025
1026 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1027 kprintf("Aborting dump due to I/O error.\n");
1028 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1029 CAM_SCSI_STATUS_ERROR)
1030 scsi_sense_print(&csio);
1031 else
1032 kprintf("status == 0x%x, scsi status == 0x%x\n",
1033 csio.ccb_h.status, csio.scsi_status);
1034 periph->flags |= CAM_PERIPH_POLLED;
1035 return(EIO);
1036 }
1037
1038 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
1039 return (EINTR);
1040
1041 /* update block count */
1042 ap->a_count -= blkcnt * dumppages;
1043 ap->a_blkno += blkcnt * dumppages;
1044 addr += PAGE_SIZE * dumppages;
1045 }
1046
1047 /*
1048 * Sync the disk cache contents to the physical media.
1049 */
1050 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1051
1052 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1053 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1054 scsi_synchronize_cache(&csio,
1055 /*retries*/1,
1056 /*cbfcnp*/dadone,
1057 MSG_SIMPLE_Q_TAG,
1058 /*begin_lba*/0,/* Cover the whole disk */
1059 /*lb_count*/0,
1060 SSD_FULL_SIZE,
1061 5 * 60 * 1000);
1062 xpt_polled_action((union ccb *)&csio);
1063
1064 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1065 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1066 CAM_SCSI_STATUS_ERROR) {
1067 int asc, ascq;
1068 int sense_key, error_code;
1069
1070 scsi_extract_sense(&csio.sense_data,
1071 &error_code,
1072 &sense_key,
1073 &asc, &ascq);
1074 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1075 scsi_sense_print(&csio);
1076 } else {
1077 xpt_print(periph->path, "Synchronize cache "
1078 "failed, status == 0x%x, scsi status == "
1079 "0x%x\n", csio.ccb_h.status,
1080 csio.scsi_status);
1081 }
1082 }
1083 }
1084 periph->flags &= ~CAM_PERIPH_POLLED;
1085 cam_periph_unlock(periph);
1086 return (0);
1087 }
1088
1089 static void
1090 dainit(void)
1091 {
1092 cam_status status;
1093
1094 /*
1095 * Create our extend array for storing the devices we attach to.
1096 */
1097 daperiphs = cam_extend_new();
1098 if (daperiphs == NULL) {
1099 kprintf("da: Failed to alloc extend array!\n");
1100 return;
1101 }
1102
1103 callout_init(&dasendorderedtag_ch);
1104
1105 /*
1106 * Install a global async callback. This callback will
1107 * receive async callbacks like "new device found".
1108 */
1109 status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
1110
1111 if (status != CAM_REQ_CMP) {
1112 kprintf("da: Failed to attach master async callback "
1113 "due to status 0x%x!\n", status);
1114 } else if (da_send_ordered) {
1115
1116 /* Register our shutdown event handler */
1117 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1118 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1119 kprintf("dainit: shutdown event registration failed!\n");
1120 }
1121 }
1122
1123 static void
1124 daoninvalidate(struct cam_periph *periph)
1125 {
1126 struct da_softc *softc;
1127 struct bio *q_bio;
1128 struct buf *q_bp;
1129
1130 softc = (struct da_softc *)periph->softc;
1131
1132 /*
1133 * De-register any async callbacks.
1134 */
1135 xpt_register_async(0, daasync, periph, periph->path);
1136
1137 softc->flags |= DA_FLAG_PACK_INVALID;
1138
1139 /*
1140 * Return all queued I/O with ENXIO.
1141 * XXX Handle any transactions queued to the card
1142 * with XPT_ABORT_CCB.
1143 */
1144 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1145 bioq_remove(&softc->bio_queue, q_bio);
1146 q_bp = q_bio->bio_buf;
1147 q_bp->b_resid = q_bp->b_bcount;
1148 q_bp->b_error = ENXIO;
1149 q_bp->b_flags |= B_ERROR;
1150 biodone(q_bio);
1151 }
1152 xpt_print(periph->path, "lost device\n");
1153 }
1154
1155 static void
1156 dacleanup(struct cam_periph *periph)
1157 {
1158 struct da_softc *softc;
1159
1160 softc = (struct da_softc *)periph->softc;
1161
1162 devstat_remove_entry(&softc->device_stats);
1163 cam_extend_release(daperiphs, periph->unit_number);
1164 xpt_print(periph->path, "removing device entry\n");
1165 /*
1166 * If we can't free the sysctl tree, oh well...
1167 */
1168 if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1169 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1170 xpt_print(periph->path, "can't remove sysctl context\n");
1171 }
1172 if (softc->disk.d_rawdev) {
1173 cam_periph_unlock(periph);
1174 disk_destroy(&softc->disk);
1175 cam_periph_lock(periph);
1176 }
1177
1178 callout_stop(&softc->sendordered_c);
1179 kfree(softc, M_DEVBUF);
1180 }
1181
1182 static void
1183 daasync(void *callback_arg, u_int32_t code,
1184 struct cam_path *path, void *arg)
1185 {
1186 struct cam_periph *periph;
1187
1188 periph = (struct cam_periph *)callback_arg;
1189 switch (code) {
1190 case AC_FOUND_DEVICE:
1191 {
1192 struct ccb_getdev *cgd;
1193 struct cam_sim *sim;
1194 cam_status status;
1195
1196 cgd = (struct ccb_getdev *)arg;
1197 if (cgd == NULL)
1198 break;
1199
1200 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1201 && SID_TYPE(&cgd->inq_data) != T_RBC
1202 && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1203 break;
1204
1205 /*
1206 * Allocate a peripheral instance for
1207 * this device and start the probe
1208 * process.
1209 */
1210 sim = xpt_path_sim(cgd->ccb_h.path);
1211 status = cam_periph_alloc(daregister, daoninvalidate,
1212 dacleanup, dastart,
1213 "da", CAM_PERIPH_BIO,
1214 cgd->ccb_h.path, daasync,
1215 AC_FOUND_DEVICE, cgd);
1216
1217 if (status != CAM_REQ_CMP
1218 && status != CAM_REQ_INPROG)
1219 kprintf("daasync: Unable to attach to new device "
1220 "due to status 0x%x\n", status);
1221 break;
1222 }
1223 case AC_SENT_BDR:
1224 case AC_BUS_RESET:
1225 {
1226 struct da_softc *softc;
1227 struct ccb_hdr *ccbh;
1228
1229 softc = (struct da_softc *)periph->softc;
1230 /*
1231 * Don't fail on the expected unit attention
1232 * that will occur.
1233 */
1234 softc->flags |= DA_FLAG_RETRY_UA;
1235 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1236 ccbh->ccb_state |= DA_CCB_RETRY_UA;
1237 /* FALLTHROUGH*/
1238 }
1239 default:
1240 cam_periph_async(periph, code, path, arg);
1241 break;
1242 }
1243 }
1244
1245 static void
1246 dasysctlinit(void *context, int pending)
1247 {
1248 struct cam_periph *periph;
1249 struct da_softc *softc;
1250 char tmpstr[80], tmpstr2[80];
1251
1252 periph = (struct cam_periph *)context;
1253 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1254 return;
1255
1256 softc = (struct da_softc *)periph->softc;
1257 ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1258 ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1259
1260 sysctl_ctx_init(&softc->sysctl_ctx);
1261 softc->flags |= DA_FLAG_SCTX_INIT;
1262 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1263 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1264 CTLFLAG_RD, 0, tmpstr);
1265 if (softc->sysctl_tree == NULL) {
1266 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1267 cam_periph_release(periph);
1268 return;
1269 }
1270
1271 /*
1272 * Now register the sysctl handler, so the user can the value on
1273 * the fly.
1274 */
1275 SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1276 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1277 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1278 "Minimum CDB size");
1279
1280 cam_periph_release(periph);
1281 }
1282
1283 static int
1284 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1285 {
1286 int error, value;
1287
1288 value = *(int *)arg1;
1289
1290 error = sysctl_handle_int(oidp, &value, 0, req);
1291
1292 if ((error != 0)
1293 || (req->newptr == NULL))
1294 return (error);
1295
1296 /*
1297 * Acceptable values here are 6, 10 or 12, or 16.
1298 */
1299 if (value < 6)
1300 value = 6;
1301 else if ((value > 6)
1302 && (value <= 10))
1303 value = 10;
1304 else if ((value > 10)
1305 && (value <= 12))
1306 value = 12;
1307 else if (value > 12)
1308 value = 16;
1309
1310 *(int *)arg1 = value;
1311
1312 return (0);
1313 }
1314
1315 static cam_status
1316 daregister(struct cam_periph *periph, void *arg)
1317 {
1318 struct da_softc *softc;
1319 struct ccb_pathinq cpi;
1320 struct ccb_getdev *cgd;
1321 char tmpstr[80];
1322 caddr_t match;
1323
1324 cgd = (struct ccb_getdev *)arg;
1325 if (periph == NULL) {
1326 kprintf("daregister: periph was NULL!!\n");
1327 return(CAM_REQ_CMP_ERR);
1328 }
1329
1330 if (cgd == NULL) {
1331 kprintf("daregister: no getdev CCB, can't register device\n");
1332 return(CAM_REQ_CMP_ERR);
1333 }
1334
1335 softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1336 LIST_INIT(&softc->pending_ccbs);
1337 softc->state = DA_STATE_PROBE;
1338 bioq_init(&softc->bio_queue);
1339 if (SID_IS_REMOVABLE(&cgd->inq_data))
1340 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1341 if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1342 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1343
1344 periph->softc = softc;
1345
1346 cam_extend_set(daperiphs, periph->unit_number, periph);
1347
1348 /*
1349 * See if this device has any quirks.
1350 */
1351 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1352 (caddr_t)da_quirk_table,
1353 sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1354 sizeof(*da_quirk_table), scsi_inquiry_match);
1355
1356 if (match != NULL)
1357 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1358 else
1359 softc->quirks = DA_Q_NONE;
1360
1361 TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1362
1363 /* Check if the SIM does not want 6 byte commands */
1364 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1365 cpi.ccb_h.func_code = XPT_PATH_INQ;
1366 xpt_action((union ccb *)&cpi);
1367 if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1368 softc->quirks |= DA_Q_NO_6_BYTE;
1369
1370 /*
1371 * RBC devices don't have to support READ(6), only READ(10).
1372 */
1373 if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1374 softc->minimum_cmd_size = 10;
1375 else
1376 softc->minimum_cmd_size = 6;
1377
1378 /*
1379 * Load the user's default, if any.
1380 */
1381 ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1382 periph->unit_number);
1383 TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1384
1385 /*
1386 * 6, 10, 12, and 16 are the currently permissible values.
1387 */
1388 if (softc->minimum_cmd_size < 6)
1389 softc->minimum_cmd_size = 6;
1390 else if ((softc->minimum_cmd_size > 6)
1391 && (softc->minimum_cmd_size <= 10))
1392 softc->minimum_cmd_size = 10;
1393 else if ((softc->minimum_cmd_size > 10)
1394 && (softc->minimum_cmd_size <= 12))
1395 softc->minimum_cmd_size = 12;
1396 else if (softc->minimum_cmd_size > 12)
1397 softc->minimum_cmd_size = 16;
1398
1399 /*
1400 * The DA driver supports a blocksize, but
1401 * we don't know the blocksize until we do
1402 * a read capacity. So, set a flag to
1403 * indicate that the blocksize is
1404 * unavailable right now. We'll clear the
1405 * flag as soon as we've done a read capacity.
1406 */
1407 devstat_add_entry(&softc->device_stats, "da",
1408 periph->unit_number, 0,
1409 DEVSTAT_BS_UNAVAILABLE,
1410 SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1411 DEVSTAT_PRIORITY_DISK);
1412
1413 /*
1414 * Register this media as a disk
1415 */
1416
1417 CAM_SIM_UNLOCK(periph->sim);
1418 disk_create(periph->unit_number, &softc->disk, &da_ops);
1419 softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1420 CAM_SIM_LOCK(periph->sim);
1421
1422 /*
1423 * Add async callbacks for bus reset and
1424 * bus device reset calls. I don't bother
1425 * checking if this fails as, in most cases,
1426 * the system will function just fine without
1427 * them and the only alternative would be to
1428 * not attach the device on failure.
1429 */
1430 xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1431 daasync, periph, periph->path);
1432
1433 /*
1434 * Take an exclusive refcount on the periph while dastart is called
1435 * to finish the probe. The reference will be dropped in dadone at
1436 * the end of probe.
1437 */
1438 cam_periph_hold(periph, 0);
1439 xpt_schedule(periph, /*priority*/5);
1440
1441 /*
1442 * Schedule a periodic event to occasionally send an
1443 * ordered tag to a device.
1444 */
1445 callout_init(&softc->sendordered_c);
1446 callout_reset(&softc->sendordered_c,
1447 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1448 dasendorderedtag, softc);
1449
1450 return(CAM_REQ_CMP);
1451 }
1452
1453 static void
1454 dastart(struct cam_periph *periph, union ccb *start_ccb)
1455 {
1456 struct da_softc *softc;
1457
1458 softc = (struct da_softc *)periph->softc;
1459
1460 switch (softc->state) {
1461 case DA_STATE_NORMAL:
1462 {
1463 /* Pull a buffer from the queue and get going on it */
1464 struct bio *bio;
1465 struct buf *bp;
1466
1467 /*
1468 * See if there is a buf with work for us to do..
1469 */
1470 bio = bioq_first(&softc->bio_queue);
1471 if (periph->immediate_priority <= periph->pinfo.priority) {
1472 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1473 ("queuing for immediate ccb\n"));
1474 start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1475 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1476 periph_links.sle);
1477 periph->immediate_priority = CAM_PRIORITY_NONE;
1478 wakeup(&periph->ccb_list);
1479 } else if (bio == NULL) {
1480 xpt_release_ccb(start_ccb);
1481 } else {
1482 u_int8_t tag_code;
1483
1484 bioq_remove(&softc->bio_queue, bio);
1485 bp = bio->bio_buf;
1486
1487 devstat_start_transaction(&softc->device_stats);
1488
1489 if ((bp->b_flags & B_ORDERED) != 0
1490 || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1491 softc->flags &= ~DA_FLAG_NEED_OTAG;
1492 softc->ordered_tag_count++;
1493 tag_code = MSG_ORDERED_Q_TAG;
1494 } else {
1495 tag_code = MSG_SIMPLE_Q_TAG;
1496 }
1497
1498 KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1499
1500 scsi_read_write(&start_ccb->csio,
1501 /*retries*/da_retry_count,
1502 dadone,
1503 tag_code,
1504 (bp->b_cmd == BUF_CMD_READ),
1505 /*byte2*/0,
1506 softc->minimum_cmd_size,
1507 bio->bio_offset / softc->params.secsize,
1508 bp->b_bcount / softc->params.secsize,
1509 bp->b_data,
1510 bp->b_bcount,
1511 /*sense_len*/SSD_FULL_SIZE,
1512 da_default_timeout * 1000);
1513 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1514
1515 /*
1516 * Block out any asyncronous callbacks
1517 * while we touch the pending ccb list.
1518 */
1519 LIST_INSERT_HEAD(&softc->pending_ccbs,
1520 &start_ccb->ccb_h, periph_links.le);
1521
1522 softc->outstanding_cmds++;
1523 /* We expect a unit attention from this device */
1524 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1525 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1526 softc->flags &= ~DA_FLAG_RETRY_UA;
1527 }
1528
1529 start_ccb->ccb_h.ccb_bio = bio;
1530 bio = bioq_first(&softc->bio_queue);
1531
1532 xpt_action(start_ccb);
1533 }
1534
1535 if (bio != NULL) {
1536 /* Have more work to do, so ensure we stay scheduled */
1537 xpt_schedule(periph, /* XXX priority */1);
1538 }
1539 break;
1540 }
1541 case DA_STATE_PROBE:
1542 {
1543 struct ccb_scsiio *csio;
1544 struct scsi_read_capacity_data *rcap;
1545
1546 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
1547 csio = &start_ccb->csio;
1548 scsi_read_capacity(csio,
1549 /*retries*/4,
1550 dadone,
1551 MSG_SIMPLE_Q_TAG,
1552 rcap,
1553 SSD_FULL_SIZE,
1554 /*timeout*/5000);
1555 start_ccb->ccb_h.ccb_bio = NULL;
1556 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1557 xpt_action(start_ccb);
1558 break;
1559 }
1560 case DA_STATE_PROBE2:
1561 {
1562 struct ccb_scsiio *csio;
1563 struct scsi_read_capacity_data_long *rcaplong;
1564
1565 rcaplong = (struct scsi_read_capacity_data_long *)
1566 kmalloc(sizeof(*rcaplong), M_SCSIDA, M_INTWAIT | M_ZERO);
1567 if (rcaplong == NULL) {
1568 kprintf("dastart: Couldn't allocate read_capacity\n");
1569 /* da_free_periph??? */
1570 break;
1571 }
1572 csio = &start_ccb->csio;
1573 scsi_read_capacity_16(csio,
1574 /*retries*/ 4,
1575 /*cbfcnp*/ dadone,
1576 /*tag_action*/ MSG_SIMPLE_Q_TAG,
1577 /*lba*/ 0,
1578 /*reladr*/ 0,
1579 /*pmi*/ 0,
1580 rcaplong,
1581 /*sense_len*/ SSD_FULL_SIZE,
1582 /*timeout*/ 60000);
1583 start_ccb->ccb_h.ccb_bio = NULL;
1584 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1585 xpt_action(start_ccb);
1586 break;
1587 }
1588 }
1589 }
1590
1591 static int
1592 cmd6workaround(union ccb *ccb)
1593 {
1594 struct scsi_rw_6 cmd6;
1595 struct scsi_rw_10 *cmd10;
1596 struct da_softc *softc;
1597 u_int8_t *cdb;
1598 int frozen;
1599
1600 cdb = ccb->csio.cdb_io.cdb_bytes;
1601
1602 /* Translation only possible if CDB is an array and cmd is R/W6 */
1603 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1604 (*cdb != READ_6 && *cdb != WRITE_6))
1605 return 0;
1606
1607 xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1608 "increasing minimum_cmd_size to 10.\n");
1609 softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1610 softc->minimum_cmd_size = 10;
1611
1612 bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1613 cmd10 = (struct scsi_rw_10 *)cdb;
1614 cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1615 cmd10->byte2 = 0;
1616 scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1617 cmd10->reserved = 0;
1618 scsi_ulto2b(cmd6.length, cmd10->length);
1619 cmd10->control = cmd6.control;
1620 ccb->csio.cdb_len = sizeof(*cmd10);
1621
1622 /* Requeue request, unfreezing queue if necessary */
1623 frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1624 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1625 xpt_action(ccb);
1626 if (frozen) {
1627 cam_release_devq(ccb->ccb_h.path,
1628 /*relsim_flags*/0,
1629 /*reduction*/0,
1630 /*timeout*/0,
1631 /*getcount_only*/0);
1632 }
1633 return (ERESTART);
1634 }
1635
1636 static void
1637 dadone(struct cam_periph *periph, union ccb *done_ccb)
1638 {
1639 struct da_softc *softc;
1640 struct ccb_scsiio *csio;
1641
1642 softc = (struct da_softc *)periph->softc;
1643 csio = &done_ccb->csio;
1644 switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1645 case DA_CCB_BUFFER_IO:
1646 {
1647 struct buf *bp;
1648 struct bio *bio;
1649
1650 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1651 bp = bio->bio_buf;
1652 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1653 int error;
1654 int sf;
1655
1656 if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1657 sf = SF_RETRY_UA;
1658 else
1659 sf = 0;
1660
1661 error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1662 if (error == ERESTART) {
1663 /*
1664 * A retry was scheuled, so
1665 * just return.
1666 */
1667 return;
1668 }
1669 if (error != 0) {
1670 struct bio *q_bio;
1671 struct buf *q_bp;
1672
1673 if (error == ENXIO) {
1674 /*
1675 * Catastrophic error. Mark our pack as
1676 * invalid.
1677 */
1678 /*
1679 * XXX See if this is really a media
1680 * XXX change first?
1681 */
1682 xpt_print(periph->path,
1683 "Invalidating pack\n");
1684 softc->flags |= DA_FLAG_PACK_INVALID;
1685 }
1686
1687 /*
1688 * return all queued I/O with EIO, so that
1689 * the client can retry these I/Os in the
1690 * proper order should it attempt to recover.
1691 */
1692 while ((q_bio = bioq_first(&softc->bio_queue))
1693 != NULL) {
1694 bioq_remove(&softc->bio_queue, q_bio);
1695 q_bp = q_bio->bio_buf;
1696 q_bp->b_resid = q_bp->b_bcount;
1697 q_bp->b_error = EIO;
1698 q_bp->b_flags |= B_ERROR;
1699 biodone(q_bio);
1700 }
1701 bp->b_error = error;
1702 bp->b_resid = bp->b_bcount;
1703 bp->b_flags |= B_ERROR;
1704 } else {
1705 bp->b_resid = csio->resid;
1706 bp->b_error = 0;
1707 if (bp->b_resid != 0)
1708 bp->b_flags |= B_ERROR;
1709 }
1710 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1711 cam_release_devq(done_ccb->ccb_h.path,
1712 /*relsim_flags*/0,
1713 /*reduction*/0,
1714 /*timeout*/0,
1715 /*getcount_only*/0);
1716 } else {
1717 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1718 panic("REQ_CMP with QFRZN");
1719 bp->b_resid = csio->resid;
1720 if (csio->resid > 0)
1721 bp->b_flags |= B_ERROR;
1722 }
1723
1724 /*
1725 * Block out any asyncronous callbacks
1726 * while we touch the pending ccb list.
1727 */
1728 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1729 softc->outstanding_cmds--;
1730 if (softc->outstanding_cmds == 0)
1731 softc->flags |= DA_FLAG_WENT_IDLE;
1732
1733 devstat_end_transaction_buf(&softc->device_stats, bp);
1734 biodone(bio);
1735 break;
1736 }
1737 case DA_CCB_PROBE:
1738 case DA_CCB_PROBE2:
1739 {
1740 struct scsi_read_capacity_data *rdcap;
1741 struct scsi_read_capacity_data_long *rcaplong;
1742 char announce_buf[80];
1743
1744 rdcap = NULL;
1745 rcaplong = NULL;
1746 if (softc->state == DA_STATE_PROBE)
1747 rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1748 else
1749 rcaplong = (struct scsi_read_capacity_data_long *)
1750 csio->data_ptr;
1751
1752 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1753 struct disk_params *dp;
1754 uint32_t block_size;
1755 uint64_t maxsector;
1756
1757 if (softc->state == DA_STATE_PROBE) {
1758 block_size = scsi_4btoul(rdcap->length);
1759 maxsector = scsi_4btoul(rdcap->addr);
1760
1761 /*
1762 * According to SBC-2, if the standard 10
1763 * byte READ CAPACITY command returns 2^32,
1764 * we should issue the 16 byte version of
1765 * the command, since the device in question
1766 * has more sectors than can be represented
1767 * with the short version of the command.
1768 */
1769 if (maxsector == 0xffffffff) {
1770 softc->state = DA_STATE_PROBE2;
1771 kfree(rdcap, M_SCSIDA);
1772 xpt_release_ccb(done_ccb);
1773 xpt_schedule(periph, /*priority*/5);
1774 return;
1775 }
1776 } else {
1777 block_size = scsi_4btoul(rcaplong->length);
1778 maxsector = scsi_8btou64(rcaplong->addr);
1779 }
1780 dasetgeom(periph, block_size, maxsector);
1781 dp = &softc->params;
1782 ksnprintf(announce_buf, sizeof(announce_buf),
1783 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1784 (uintmax_t) (((uintmax_t)dp->secsize *
1785 dp->sectors) / (1024*1024)),
1786 (uintmax_t)dp->sectors,
1787 dp->secsize, dp->heads, dp->secs_per_track,
1788 dp->cylinders);
1789 } else {
1790 int error;
1791
1792 announce_buf[0] = '\0';
1793
1794 /*
1795 * Retry any UNIT ATTENTION type errors. They
1796 * are expected at boot.
1797 */
1798 error = daerror(done_ccb, CAM_RETRY_SELTO,
1799 SF_RETRY_UA|SF_NO_PRINT);
1800 if (error == ERESTART) {
1801 /*
1802 * A retry was scheuled, so
1803 * just return.
1804 */
1805 return;
1806 } else if (error != 0) {
1807 struct scsi_sense_data *sense;
1808 int asc, ascq;
1809 int sense_key, error_code;
1810 int have_sense;
1811 cam_status status;
1812 struct ccb_getdev cgd;
1813
1814 /* Don't wedge this device's queue */
1815 status = done_ccb->ccb_h.status;
1816 if ((status & CAM_DEV_QFRZN) != 0)
1817 cam_release_devq(done_ccb->ccb_h.path,
1818 /*relsim_flags*/0,
1819 /*reduction*/0,
1820 /*timeout*/0,
1821 /*getcount_only*/0);
1822
1823
1824 xpt_setup_ccb(&cgd.ccb_h,
1825 done_ccb->ccb_h.path,
1826 /* priority */ 1);
1827 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1828 xpt_action((union ccb *)&cgd);
1829
1830 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1831 || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1832 || ((status & CAM_AUTOSNS_VALID) == 0))
1833 have_sense = FALSE;
1834 else
1835 have_sense = TRUE;
1836
1837 if (have_sense) {
1838 sense = &csio->sense_data;
1839 scsi_extract_sense(sense, &error_code,
1840 &sense_key,
1841 &asc, &ascq);
1842 }
1843 /*
1844 * Attach to anything that claims to be a
1845 * direct access or optical disk device,
1846 * as long as it doesn't return a "Logical
1847 * unit not supported" (0x25) error.
1848 */
1849 if ((have_sense) && (asc != 0x25)
1850 && (error_code == SSD_CURRENT_ERROR)) {
1851 const char *sense_key_desc;
1852 const char *asc_desc;
1853
1854 scsi_sense_desc(sense_key, asc, ascq,
1855 &cgd.inq_data,
1856 &sense_key_desc,
1857 &asc_desc);
1858 ksnprintf(announce_buf,
1859 sizeof(announce_buf),
1860 "Attempt to query device "
1861 "size failed: %s, %s",
1862 sense_key_desc,
1863 asc_desc);
1864 } else {
1865 if (have_sense)
1866 scsi_sense_print(
1867 &done_ccb->csio);
1868 else {
1869 xpt_print(periph->path,
1870 "got CAM status %#x\n",
1871 done_ccb->ccb_h.status);
1872 }
1873
1874 xpt_print(periph->path, "fatal error, "
1875 "failed to attach to device\n");
1876
1877 /*
1878 * Free up resources.
1879 */
1880 cam_periph_invalidate(periph);
1881 }
1882 }
1883 }
1884 kfree(csio->data_ptr, M_SCSIDA);
1885 if (announce_buf[0] != '\0') {
1886 xpt_announce_periph(periph, announce_buf);
1887 /*
1888 * Create our sysctl variables, now that we know
1889 * we have successfully attached.
1890 */
1891 taskqueue_enqueue(taskqueue_thread[mycpuid],
1892 &softc->sysctl_task);
1893 }
1894 softc->state = DA_STATE_NORMAL;
1895 /*
1896 * Since our peripheral may be invalidated by an error
1897 * above or an external event, we must release our CCB
1898 * before releasing the probe lock on the peripheral.
1899 * The peripheral will only go away once the last lock
1900 * is removed, and we need it around for the CCB release
1901 * operation.
1902 */
1903 xpt_release_ccb(done_ccb);
1904 cam_periph_unhold(periph);
1905 return;
1906 }
1907 case DA_CCB_WAITING:
1908 {
1909 /* Caller will release the CCB */
1910 wakeup(&done_ccb->ccb_h.cbfcnp);
1911 return;
1912 }
1913 case DA_CCB_DUMP:
1914 /* No-op. We're polling */
1915 return;
1916 default:
1917 break;
1918 }
1919 xpt_release_ccb(done_ccb);
1920 }
1921
1922 static int
1923 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1924 {
1925 struct da_softc *softc;
1926 struct cam_periph *periph;
1927 int error;
1928
1929 periph = xpt_path_periph(ccb->ccb_h.path);
1930 softc = (struct da_softc *)periph->softc;
1931
1932 /*
1933 * Automatically detect devices that do not support
1934 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1935 */
1936 error = 0;
1937 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1938 error = cmd6workaround(ccb);
1939 } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1940 CAM_SCSI_STATUS_ERROR)
1941 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1942 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1943 && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1944 && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1945 int sense_key, error_code, asc, ascq;
1946
1947 scsi_extract_sense(&ccb->csio.sense_data,
1948 &error_code, &sense_key, &asc, &ascq);
1949 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1950 error = cmd6workaround(ccb);
1951 }
1952 if (error == ERESTART)
1953 return (ERESTART);
1954
1955 /*
1956 * XXX
1957 * Until we have a better way of doing pack validation,
1958 * don't treat UAs as errors.
1959 */
1960 sense_flags |= SF_RETRY_UA;
1961 return(cam_periph_error(ccb, cam_flags, sense_flags,
1962 &softc->saved_ccb));
1963 }
1964
1965 static void
1966 daprevent(struct cam_periph *periph, int action)
1967 {
1968 struct da_softc *softc;
1969 union ccb *ccb;
1970 int error;
1971
1972 softc = (struct da_softc *)periph->softc;
1973
1974 if (((action == PR_ALLOW)
1975 && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1976 || ((action == PR_PREVENT)
1977 && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1978 return;
1979 }
1980
1981 ccb = cam_periph_getccb(periph, /*priority*/1);
1982
1983 scsi_prevent(&ccb->csio,
1984 /*retries*/1,
1985 /*cbcfp*/dadone,
1986 MSG_SIMPLE_Q_TAG,
1987 action,
1988 SSD_FULL_SIZE,
1989 5000);
1990
1991 error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
1992 SF_RETRY_UA, &softc->device_stats);
1993
1994 if (error == 0) {
1995 if (action == PR_ALLOW)
1996 softc->flags &= ~DA_FLAG_PACK_LOCKED;
1997 else
1998 softc->flags |= DA_FLAG_PACK_LOCKED;
1999 }
2000
2001 xpt_release_ccb(ccb);
2002 }
2003
2004 static int
2005 dagetcapacity(struct cam_periph *periph)
2006 {
2007 struct da_softc *softc;
2008 union ccb *ccb;
2009 struct scsi_read_capacity_data *rcap;
2010 struct scsi_read_capacity_data_long *rcaplong;
2011 uint32_t block_len;
2012 uint64_t maxsector;
2013 int error;
2014
2015 softc = (struct da_softc *)periph->softc;
2016 block_len = 0;
2017 maxsector = 0;
2018 error = 0;
2019
2020 /* Do a read capacity */
2021 rcap = (struct scsi_read_capacity_data *)kmalloc(sizeof(*rcaplong),
2022 M_SCSIDA, M_INTWAIT);
2023
2024 ccb = cam_periph_getccb(periph, /*priority*/1);
2025 scsi_read_capacity(&ccb->csio,
2026 /*retries*/4,
2027 /*cbfncp*/dadone,
2028 MSG_SIMPLE_Q_TAG,
2029 rcap,
2030 SSD_FULL_SIZE,
2031 /*timeout*/60000);
2032 ccb->ccb_h.ccb_bio = NULL;
2033
2034 error = cam_periph_runccb(ccb, daerror,
2035 /*cam_flags*/CAM_RETRY_SELTO,
2036 /*sense_flags*/SF_RETRY_UA,
2037 &softc->device_stats);
2038
2039 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2040 cam_release_devq(ccb->ccb_h.path,
2041 /*relsim_flags*/0,
2042 /*reduction*/0,
2043 /*timeout*/0,
2044 /*getcount_only*/0);
2045
2046 if (error == 0) {
2047 block_len = scsi_4btoul(rcap->length);
2048 maxsector = scsi_4btoul(rcap->addr);
2049
2050 if (maxsector != 0xffffffff)
2051 goto done;
2052 } else
2053 goto done;
2054
2055 rcaplong = (struct scsi_read_capacity_data_long *)rcap;
2056
2057 scsi_read_capacity_16(&ccb->csio,
2058 /*retries*/ 4,
2059 /*cbfcnp*/ dadone,
2060 /*tag_action*/ MSG_SIMPLE_Q_TAG,
2061 /*lba*/ 0,
2062 /*reladr*/ 0,
2063 /*pmi*/ 0,
2064 rcaplong,
2065 /*sense_len*/ SSD_FULL_SIZE,
2066 /*timeout*/ 60000);
2067 ccb->ccb_h.ccb_bio = NULL;
2068
2069 error = cam_periph_runccb(ccb, daerror,
2070 /*cam_flags*/CAM_RETRY_SELTO,
2071 /*sense_flags*/SF_RETRY_UA,
2072 &softc->device_stats);
2073
2074 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2075 cam_release_devq(ccb->ccb_h.path,
2076 /*relsim_flags*/0,
2077 /*reduction*/0,
2078 /*timeout*/0,
2079 /*getcount_only*/0);
2080
2081 if (error == 0) {
2082 block_len = scsi_4btoul(rcaplong->length);
2083 maxsector = scsi_8btou64(rcaplong->addr);
2084 }
2085
2086 done:
2087
2088 if (error == 0)
2089 dasetgeom(periph, block_len, maxsector);
2090
2091 xpt_release_ccb(ccb);
2092
2093 kfree(rcap, M_SCSIDA);
2094
2095 return (error);
2096 }
2097
2098 static void
2099 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2100 {
2101 struct ccb_calc_geometry ccg;
2102 struct da_softc *softc;
2103 struct disk_params *dp;
2104
2105 softc = (struct da_softc *)periph->softc;
2106
2107 dp = &softc->params;
2108 dp->secsize = block_len;
2109 dp->sectors = maxsector + 1;
2110 /*
2111 * Have the controller provide us with a geometry
2112 * for this disk. The only time the geometry
2113 * matters is when we boot and the controller
2114 * is the only one knowledgeable enough to come
2115 * up with something that will make this a bootable
2116 * device.
2117 */
2118 xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2119 ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2120 ccg.block_size = dp->secsize;
2121 ccg.volume_size = dp->sectors;
2122 ccg.heads = 0;
2123 ccg.secs_per_track = 0;
2124 ccg.cylinders = 0;
2125 xpt_action((union ccb*)&ccg);
2126 if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2127 /*
2128 * We don't know what went wrong here- but just pick
2129 * a geometry so we don't have nasty things like divide
2130 * by zero.
2131 */
2132 dp->heads = 255;
2133 dp->secs_per_track = 255;
2134 dp->cylinders = dp->sectors / (255 * 255);
2135 if (dp->cylinders == 0) {
2136 dp->cylinders = 1;
2137 }
2138 } else {
2139 dp->heads = ccg.heads;
2140 dp->secs_per_track = ccg.secs_per_track;
2141 dp->cylinders = ccg.cylinders;
2142 }
2143 }
2144
2145 static void
2146 dasendorderedtag(void *arg)
2147 {
2148 struct da_softc *softc = arg;
2149
2150 if (da_send_ordered) {
2151 if ((softc->ordered_tag_count == 0)
2152 && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2153 softc->flags |= DA_FLAG_NEED_OTAG;
2154 }
2155 if (softc->outstanding_cmds > 0)
2156 softc->flags &= ~DA_FLAG_WENT_IDLE;
2157
2158 softc->ordered_tag_count = 0;
2159 }
2160 /* Queue us up again */
2161 callout_reset(&softc->sendordered_c,
2162 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
2163 dasendorderedtag, softc);
2164 }
2165
2166 /*
2167 * Step through all DA peripheral drivers, and if the device is still open,
2168 * sync the disk cache to physical media.
2169 */
2170 static void
2171 dashutdown(void * arg, int howto)
2172 {
2173 struct cam_periph *periph;
2174 struct da_softc *softc;
2175
2176 TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2177 union ccb ccb;
2178
2179 cam_periph_lock(periph);
2180 softc = (struct da_softc *)periph->softc;
2181
2182 /*
2183 * We only sync the cache if the drive is still open, and
2184 * if the drive is capable of it..
2185 */
2186 if (((softc->flags & DA_FLAG_OPEN) == 0)
2187 || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2188 cam_periph_unlock(periph);
2189 continue;
2190 }
2191
2192 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2193
2194 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2195 scsi_synchronize_cache(&ccb.csio,
2196 /*retries*/1,
2197 /*cbfcnp*/dadone,
2198 MSG_SIMPLE_Q_TAG,
2199 /*begin_lba*/0, /* whole disk */
2200 /*lb_count*/0,
2201 SSD_FULL_SIZE,
2202 60 * 60 * 1000);
2203
2204 xpt_polled_action(&ccb);
2205
2206 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2207 if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2208 CAM_SCSI_STATUS_ERROR)
2209 && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2210 int error_code, sense_key, asc, ascq;
2211
2212 scsi_extract_sense(&ccb.csio.sense_data,
2213 &error_code, &sense_key,
2214 &asc, &ascq);
2215
2216 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2217 scsi_sense_print(&ccb.csio);
2218 } else {
2219 xpt_print(periph->path, "Synchronize "
2220 "cache failed, status == 0x%x, scsi status "
2221 "== 0x%x\n", ccb.ccb_h.status,
2222 ccb.csio.scsi_status);
2223 }
2224 }
2225
2226 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2227 cam_release_devq(ccb.ccb_h.path,
2228 /*relsim_flags*/0,
2229 /*reduction*/0,
2230 /*timeout*/0,
2231 /*getcount_only*/0);
2232
2233 cam_periph_unlock(periph);
2234 }
2235 }
2236
2237 #else /* !_KERNEL */
2238
2239 /*
2240 * XXX This is only left out of the kernel build to silence warnings. If,
2241 * for some reason this function is used in the kernel, the ifdefs should
2242 * be moved so it is included both in the kernel and userland.
2243 */
2244 void
2245 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2246 void (*cbfcnp)(struct cam_periph *, union ccb *),
2247 u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2248 u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2249 u_int32_t timeout)
2250 {
2251 struct scsi_format_unit *scsi_cmd;
2252
2253 scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2254 scsi_cmd->opcode = FORMAT_UNIT;
2255 scsi_cmd->byte2 = byte2;
2256 scsi_ulto2b(ileave, scsi_cmd->interleave);
2257
2258 cam_fill_csio(csio,
2259 retries,
2260 cbfcnp,
2261 /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2262 tag_action,
2263 data_ptr,
2264 dxfer_len,
2265 sense_len,
2266 sizeof(*scsi_cmd),
2267 timeout);
2268 }
2269
2270 #endif /* _KERNEL */
DragonFly BSD