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a2162a9259876b8c9444ea86fa663e5e631e12ba
[dragonfly.git] / sys / bus / cam / scsi / scsi_da.c
bloba2162a9259876b8c9444ea86fa663e5e631e12ba
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 1.57 2008/07/12 20:36:06 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 /*
550 * Samsung YP-U3 mp3-player
551 * PR: 125398
552 */
553 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Samsung", "YP-U3",
554 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
555 },
556 {
557 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Netac", "OnlyDisk*",
558 "2000"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
559 },
560 {
561 /*
562 * USB 2.0 (HS) Flash Disk MP3 player
563 */
564 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "(HS) Flash Disk", "*"},
565 /*quirks*/ DA_Q_NO_SYNC_CACHE
566 },
567 };
568
569 static d_open_t daopen;
570 static d_close_t daclose;
571 static d_strategy_t dastrategy;
572 static d_dump_t dadump;
573 static periph_init_t dainit;
574 static void daasync(void *callback_arg, u_int32_t code,
575 struct cam_path *path, void *arg);
576 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
577 static periph_ctor_t daregister;
578 static periph_dtor_t dacleanup;
579 static periph_start_t dastart;
580 static periph_oninv_t daoninvalidate;
581 static void dadone(struct cam_periph *periph,
582 union ccb *done_ccb);
583 static int daerror(union ccb *ccb, u_int32_t cam_flags,
584 u_int32_t sense_flags);
585 static void daprevent(struct cam_periph *periph, int action);
586 static int dagetcapacity(struct cam_periph *periph);
587 static void dasetgeom(struct cam_periph *periph, uint32_t block_len,
588 uint64_t maxsector);
589
590 static timeout_t dasendorderedtag;
591 static void dashutdown(void *arg, int howto);
592
593 #ifndef DA_DEFAULT_TIMEOUT
594 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */
595 #endif
596
597 #ifndef DA_DEFAULT_RETRY
598 #define DA_DEFAULT_RETRY 4
599 #endif
600
601 #ifndef DA_DEFAULT_SEND_ORDERED
602 #define DA_DEFAULT_SEND_ORDERED 1
603 #endif
604
605 static int da_retry_count = DA_DEFAULT_RETRY;
606 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
607 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
608 static struct callout dasendorderedtag_ch;
609
610 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
611 "CAM Direct Access Disk driver");
612 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
613 &da_retry_count, 0, "Normal I/O retry count");
614 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
615 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
616 &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
617 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
618 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
619 &da_send_ordered, 0, "Send Ordered Tags");
620 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
621
622 /*
623 * DA_ORDEREDTAG_INTERVAL determines how often, relative
624 * to the default timeout, we check to see whether an ordered
625 * tagged transaction is appropriate to prevent simple tag
626 * starvation. Since we'd like to ensure that there is at least
627 * 1/2 of the timeout length left for a starved transaction to
628 * complete after we've sent an ordered tag, we must poll at least
629 * four times in every timeout period. This takes care of the worst
630 * case where a starved transaction starts during an interval that
631 * meets the requirement "don't send an ordered tag" test so it takes
632 * us two intervals to determine that a tag must be sent.
633 */
634 #ifndef DA_ORDEREDTAG_INTERVAL
635 #define DA_ORDEREDTAG_INTERVAL 4
636 #endif
637
638 static struct periph_driver dadriver =
639 {
640 dainit, "da",
641 TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
642 };
643
644 PERIPHDRIVER_DECLARE(da, dadriver);
645
646 static struct dev_ops da_ops = {
647 { "da", DA_CDEV_MAJOR, D_DISK },
648 .d_open = daopen,
649 .d_close = daclose,
650 .d_read = physread,
651 .d_write = physwrite,
652 .d_strategy = dastrategy,
653 .d_dump = dadump
654 };
655
656 static struct extend_array *daperiphs;
657
658 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
659
660 static int
661 daopen(struct dev_open_args *ap)
662 {
663 cdev_t dev = ap->a_head.a_dev;
664 struct cam_periph *periph;
665 struct da_softc *softc;
666 struct disk_info info;
667 int unit;
668 int error;
669
670 unit = dkunit(dev);
671 periph = cam_extend_get(daperiphs, unit);
672 if (periph == NULL) {
673 return (ENXIO);
674 }
675
676 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
677 return(ENXIO);
678 }
679
680 cam_periph_lock(periph);
681 if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
682 cam_periph_unlock(periph);
683 cam_periph_release(periph);
684 return (error);
685 }
686
687 unit = periph->unit_number;
688 softc = (struct da_softc *)periph->softc;
689 softc->flags |= DA_FLAG_OPEN;
690
691 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
692 ("daopen: dev=%s (unit %d)\n", devtoname(dev),
693 unit));
694
695 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
696 /* Invalidate our pack information. */
697 disk_invalidate(&softc->disk);
698 softc->flags &= ~DA_FLAG_PACK_INVALID;
699 }
700
701 error = dagetcapacity(periph);
702
703 #if 0
704 /* Do a read capacity */
705 {
706 struct scsi_read_capacity_data *rcap;
707 union ccb *ccb;
708
709 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
710
711 ccb = cam_periph_getccb(periph, /*priority*/1);
712 scsi_read_capacity(&ccb->csio,
713 /*retries*/1,
714 /*cbfncp*/dadone,
715 MSG_SIMPLE_Q_TAG,
716 rcap,
717 SSD_FULL_SIZE,
718 /*timeout*/60000);
719 ccb->ccb_h.ccb_bio = NULL;
720
721 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
722 /*sense_flags*/SF_RETRY_UA |
723 SF_RETRY_SELTO,
724 &softc->device_stats);
725
726 xpt_release_ccb(ccb);
727
728 if (error == 0) {
729 dasetgeom(periph, rcap);
730 }
731
732 kfree(rcap, M_SCSIDA);
733 }
734 #endif
735
736 if (error == 0) {
737 struct ccb_getdev cgd;
738
739 /* Build disk information structure */
740 bzero(&info, sizeof(info));
741 info.d_type = DTYPE_SCSI;
742
743 /*
744 * Grab the inquiry data to get the vendor and product names.
745 * Put them in the typename and packname for the label.
746 */
747 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
748 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
749 xpt_action((union ccb *)&cgd);
750
751 #if 0
752 strncpy(label->d_typename, cgd.inq_data.vendor,
753 min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
754 strncpy(label->d_packname, cgd.inq_data.product,
755 min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
756 #endif
757
758 /*
759 * Mandatory fields
760 */
761 info.d_media_blksize = softc->params.secsize;
762 info.d_media_blocks = softc->params.sectors;
763 info.d_media_size = 0;
764
765 /*
766 * Optional fields
767 */
768 info.d_secpertrack = softc->params.secs_per_track;
769 info.d_nheads = softc->params.heads;
770 info.d_ncylinders = softc->params.cylinders;
771 info.d_secpercyl = softc->params.heads *
772 softc->params.secs_per_track;
773 disk_setdiskinfo(&softc->disk, &info);
774
775 /*
776 * Check to see whether or not the blocksize is set yet.
777 * If it isn't, set it and then clear the blocksize
778 * unavailable flag for the device statistics.
779 */
780 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
781 softc->device_stats.block_size = softc->params.secsize;
782 softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
783 }
784 }
785
786 if (error == 0) {
787 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
788 (softc->quirks & DA_Q_NO_PREVENT) == 0)
789 daprevent(periph, PR_PREVENT);
790 } else {
791 softc->flags &= ~DA_FLAG_OPEN;
792 cam_periph_release(periph);
793 }
794 cam_periph_unhold(periph);
795 cam_periph_unlock(periph);
796 return (error);
797 }
798
799 static int
800 daclose(struct dev_close_args *ap)
801 {
802 cdev_t dev = ap->a_head.a_dev;
803 struct cam_periph *periph;
804 struct da_softc *softc;
805 int unit;
806 int error;
807
808 unit = dkunit(dev);
809 periph = cam_extend_get(daperiphs, unit);
810 if (periph == NULL)
811 return (ENXIO);
812
813 cam_periph_lock(periph);
814 if ((error = cam_periph_hold(periph, 0)) != 0) {
815 cam_periph_unlock(periph);
816 cam_periph_release(periph);
817 return (error);
818 }
819
820 softc = (struct da_softc *)periph->softc;
821
822 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
823 union ccb *ccb;
824
825 ccb = cam_periph_getccb(periph, /*priority*/1);
826
827 scsi_synchronize_cache(&ccb->csio,
828 /*retries*/1,
829 /*cbfcnp*/dadone,
830 MSG_SIMPLE_Q_TAG,
831 /*begin_lba*/0,/* Cover the whole disk */
832 /*lb_count*/0,
833 SSD_FULL_SIZE,
834 5 * 60 * 1000);
835
836 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
837 /*sense_flags*/SF_RETRY_UA,
838 &softc->device_stats);
839
840 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
841 if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
842 CAM_SCSI_STATUS_ERROR) {
843 int asc, ascq;
844 int sense_key, error_code;
845
846 scsi_extract_sense(&ccb->csio.sense_data,
847 &error_code,
848 &sense_key,
849 &asc, &ascq);
850 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
851 scsi_sense_print(&ccb->csio);
852 } else {
853 xpt_print(periph->path, "Synchronize cache "
854 "failed, status == 0x%x, scsi status == "
855 "0x%x\n", ccb->csio.ccb_h.status,
856 ccb->csio.scsi_status);
857 }
858 }
859
860 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
861 cam_release_devq(ccb->ccb_h.path,
862 /*relsim_flags*/0,
863 /*reduction*/0,
864 /*timeout*/0,
865 /*getcount_only*/0);
866
867 xpt_release_ccb(ccb);
868
869 }
870
871 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
872 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
873 daprevent(periph, PR_ALLOW);
874 /*
875 * If we've got removeable media, mark the blocksize as
876 * unavailable, since it could change when new media is
877 * inserted.
878 */
879 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
880 }
881
882 /*
883 * Don't compound any ref counting software bugs with more.
884 */
885 if (softc->flags & DA_FLAG_OPEN) {
886 softc->flags &= ~DA_FLAG_OPEN;
887 cam_periph_release(periph);
888 } else {
889 xpt_print(periph->path,
890 "daclose() called on an already closed device!\n");
891 }
892 cam_periph_unhold(periph);
893 cam_periph_unlock(periph);
894 return (0);
895 }
896
897 /*
898 * Actually translate the requested transfer into one the physical driver
899 * can understand. The transfer is described by a buf and will include
900 * only one physical transfer.
901 */
902 static int
903 dastrategy(struct dev_strategy_args *ap)
904 {
905 cdev_t dev = ap->a_head.a_dev;
906 struct bio *bio = ap->a_bio;
907 struct buf *bp = bio->bio_buf;
908 struct cam_periph *periph;
909 struct da_softc *softc;
910 u_int unit;
911 u_int part;
912
913 unit = dkunit(dev);
914 part = dkpart(dev);
915 periph = cam_extend_get(daperiphs, unit);
916 if (periph == NULL) {
917 bp->b_error = ENXIO;
918 goto bad;
919 }
920 softc = (struct da_softc *)periph->softc;
921
922 cam_periph_lock(periph);
923
924 #if 0
925 /*
926 * check it's not too big a transfer for our adapter
927 */
928 scsi_minphys(bp, &sd_switch);
929 #endif
930
931 /*
932 * Mask interrupts so that the pack cannot be invalidated until
933 * after we are in the queue. Otherwise, we might not properly
934 * clean up one of the buffers.
935 */
936
937 /*
938 * If the device has been made invalid, error out
939 */
940 if ((softc->flags & DA_FLAG_PACK_INVALID)) {
941 cam_periph_unlock(periph);
942 bp->b_error = ENXIO;
943 goto bad;
944 }
945
946 /*
947 * Place it in the queue of disk activities for this disk
948 */
949 bioqdisksort(&softc->bio_queue, bio);
950
951 /*
952 * Schedule ourselves for performing the work.
953 */
954 xpt_schedule(periph, /* XXX priority */1);
955 cam_periph_unlock(periph);
956
957 return(0);
958 bad:
959 bp->b_flags |= B_ERROR;
960
961 /*
962 * Correctly set the buf to indicate a completed xfer
963 */
964 bp->b_resid = bp->b_bcount;
965 biodone(bio);
966 return(0);
967 }
968
969 static int
970 dadump(struct dev_dump_args *ap)
971 {
972 cdev_t dev = ap->a_head.a_dev;
973 struct cam_periph *periph;
974 struct da_softc *softc;
975 u_int unit;
976 long blkcnt;
977 vm_paddr_t addr;
978 struct ccb_scsiio csio;
979 int dumppages = MAXDUMPPGS;
980 int i;
981
982 /* toss any characters present prior to dump */
983 while (cncheckc() != -1)
984 ;
985
986 unit = dkunit(dev);
987 periph = cam_extend_get(daperiphs, unit);
988 if (periph == NULL) {
989 return (ENXIO);
990 }
991 softc = (struct da_softc *)periph->softc;
992
993 cam_periph_lock(periph);
994 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
995 cam_periph_unlock(periph);
996 return (ENXIO);
997 }
998
999 addr = 0; /* starting address */
1000 blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
1001
1002 while (ap->a_count > 0) {
1003 caddr_t va = NULL;
1004
1005 if ((ap->a_count / blkcnt) < dumppages)
1006 dumppages = ap->a_count / blkcnt;
1007
1008 for (i = 0; i < dumppages; ++i) {
1009 vm_paddr_t a = addr + (i * PAGE_SIZE);
1010 if (is_physical_memory(a))
1011 va = pmap_kenter_temporary(trunc_page(a), i);
1012 else
1013 va = pmap_kenter_temporary(trunc_page(0), i);
1014 }
1015
1016 periph->flags |= CAM_PERIPH_POLLED;
1017 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1018 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1019 scsi_read_write(&csio,
1020 /*retries*/1,
1021 dadone,
1022 MSG_ORDERED_Q_TAG,
1023 /*read*/FALSE,
1024 /*byte2*/0,
1025 /*minimum_cmd_size*/ softc->minimum_cmd_size,
1026 ap->a_blkno,
1027 blkcnt * dumppages,
1028 /*data_ptr*/(u_int8_t *) va,
1029 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
1030 /*sense_len*/SSD_FULL_SIZE,
1031 DA_DEFAULT_TIMEOUT * 1000);
1032 xpt_polled_action((union ccb *)&csio);
1033
1034 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1035 kprintf("Aborting dump due to I/O error.\n");
1036 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1037 CAM_SCSI_STATUS_ERROR)
1038 scsi_sense_print(&csio);
1039 else
1040 kprintf("status == 0x%x, scsi status == 0x%x\n",
1041 csio.ccb_h.status, csio.scsi_status);
1042 periph->flags |= CAM_PERIPH_POLLED;
1043 return(EIO);
1044 }
1045
1046 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
1047 return (EINTR);
1048
1049 /* update block count */
1050 ap->a_count -= blkcnt * dumppages;
1051 ap->a_blkno += blkcnt * dumppages;
1052 addr += PAGE_SIZE * dumppages;
1053 }
1054
1055 /*
1056 * Sync the disk cache contents to the physical media.
1057 */
1058 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1059
1060 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1061 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1062 scsi_synchronize_cache(&csio,
1063 /*retries*/1,
1064 /*cbfcnp*/dadone,
1065 MSG_SIMPLE_Q_TAG,
1066 /*begin_lba*/0,/* Cover the whole disk */
1067 /*lb_count*/0,
1068 SSD_FULL_SIZE,
1069 5 * 60 * 1000);
1070 xpt_polled_action((union ccb *)&csio);
1071
1072 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1073 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1074 CAM_SCSI_STATUS_ERROR) {
1075 int asc, ascq;
1076 int sense_key, error_code;
1077
1078 scsi_extract_sense(&csio.sense_data,
1079 &error_code,
1080 &sense_key,
1081 &asc, &ascq);
1082 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1083 scsi_sense_print(&csio);
1084 } else {
1085 xpt_print(periph->path, "Synchronize cache "
1086 "failed, status == 0x%x, scsi status == "
1087 "0x%x\n", csio.ccb_h.status,
1088 csio.scsi_status);
1089 }
1090 }
1091 }
1092 periph->flags &= ~CAM_PERIPH_POLLED;
1093 cam_periph_unlock(periph);
1094 return (0);
1095 }
1096
1097 static void
1098 dainit(void)
1099 {
1100 cam_status status;
1101
1102 /*
1103 * Create our extend array for storing the devices we attach to.
1104 */
1105 daperiphs = cam_extend_new();
1106 if (daperiphs == NULL) {
1107 kprintf("da: Failed to alloc extend array!\n");
1108 return;
1109 }
1110
1111 callout_init(&dasendorderedtag_ch);
1112
1113 /*
1114 * Install a global async callback. This callback will
1115 * receive async callbacks like "new device found".
1116 */
1117 status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
1118
1119 if (status != CAM_REQ_CMP) {
1120 kprintf("da: Failed to attach master async callback "
1121 "due to status 0x%x!\n", status);
1122 } else if (da_send_ordered) {
1123
1124 /* Register our shutdown event handler */
1125 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1126 NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1127 kprintf("dainit: shutdown event registration failed!\n");
1128 }
1129 }
1130
1131 static void
1132 daoninvalidate(struct cam_periph *periph)
1133 {
1134 struct da_softc *softc;
1135 struct bio *q_bio;
1136 struct buf *q_bp;
1137
1138 softc = (struct da_softc *)periph->softc;
1139
1140 /*
1141 * De-register any async callbacks.
1142 */
1143 xpt_register_async(0, daasync, periph, periph->path);
1144
1145 softc->flags |= DA_FLAG_PACK_INVALID;
1146
1147 /*
1148 * Return all queued I/O with ENXIO.
1149 * XXX Handle any transactions queued to the card
1150 * with XPT_ABORT_CCB.
1151 */
1152 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1153 bioq_remove(&softc->bio_queue, q_bio);
1154 q_bp = q_bio->bio_buf;
1155 q_bp->b_resid = q_bp->b_bcount;
1156 q_bp->b_error = ENXIO;
1157 q_bp->b_flags |= B_ERROR;
1158 biodone(q_bio);
1159 }
1160 xpt_print(periph->path, "lost device\n");
1161 }
1162
1163 static void
1164 dacleanup(struct cam_periph *periph)
1165 {
1166 struct da_softc *softc;
1167
1168 softc = (struct da_softc *)periph->softc;
1169
1170 devstat_remove_entry(&softc->device_stats);
1171 cam_extend_release(daperiphs, periph->unit_number);
1172 xpt_print(periph->path, "removing device entry\n");
1173 /*
1174 * If we can't free the sysctl tree, oh well...
1175 */
1176 if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1177 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1178 xpt_print(periph->path, "can't remove sysctl context\n");
1179 }
1180 if (softc->disk.d_rawdev) {
1181 cam_periph_unlock(periph);
1182 disk_destroy(&softc->disk);
1183 cam_periph_lock(periph);
1184 }
1185
1186 callout_stop(&softc->sendordered_c);
1187 kfree(softc, M_DEVBUF);
1188 }
1189
1190 static void
1191 daasync(void *callback_arg, u_int32_t code,
1192 struct cam_path *path, void *arg)
1193 {
1194 struct cam_periph *periph;
1195
1196 periph = (struct cam_periph *)callback_arg;
1197 switch (code) {
1198 case AC_FOUND_DEVICE:
1199 {
1200 struct ccb_getdev *cgd;
1201 struct cam_sim *sim;
1202 cam_status status;
1203
1204 cgd = (struct ccb_getdev *)arg;
1205 if (cgd == NULL)
1206 break;
1207
1208 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1209 && SID_TYPE(&cgd->inq_data) != T_RBC
1210 && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1211 break;
1212
1213 /*
1214 * Allocate a peripheral instance for
1215 * this device and start the probe
1216 * process.
1217 */
1218 sim = xpt_path_sim(cgd->ccb_h.path);
1219 status = cam_periph_alloc(daregister, daoninvalidate,
1220 dacleanup, dastart,
1221 "da", CAM_PERIPH_BIO,
1222 cgd->ccb_h.path, daasync,
1223 AC_FOUND_DEVICE, cgd);
1224
1225 if (status != CAM_REQ_CMP
1226 && status != CAM_REQ_INPROG)
1227 kprintf("daasync: Unable to attach to new device "
1228 "due to status 0x%x\n", status);
1229 break;
1230 }
1231 case AC_SENT_BDR:
1232 case AC_BUS_RESET:
1233 {
1234 struct da_softc *softc;
1235 struct ccb_hdr *ccbh;
1236
1237 softc = (struct da_softc *)periph->softc;
1238 /*
1239 * Don't fail on the expected unit attention
1240 * that will occur.
1241 */
1242 softc->flags |= DA_FLAG_RETRY_UA;
1243 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1244 ccbh->ccb_state |= DA_CCB_RETRY_UA;
1245 /* FALLTHROUGH*/
1246 }
1247 default:
1248 cam_periph_async(periph, code, path, arg);
1249 break;
1250 }
1251 }
1252
1253 static void
1254 dasysctlinit(void *context, int pending)
1255 {
1256 struct cam_periph *periph;
1257 struct da_softc *softc;
1258 char tmpstr[80], tmpstr2[80];
1259
1260 periph = (struct cam_periph *)context;
1261 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1262 return;
1263
1264 softc = (struct da_softc *)periph->softc;
1265 ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1266 ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1267
1268 sysctl_ctx_init(&softc->sysctl_ctx);
1269 softc->flags |= DA_FLAG_SCTX_INIT;
1270 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1271 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1272 CTLFLAG_RD, 0, tmpstr);
1273 if (softc->sysctl_tree == NULL) {
1274 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1275 cam_periph_release(periph);
1276 return;
1277 }
1278
1279 /*
1280 * Now register the sysctl handler, so the user can the value on
1281 * the fly.
1282 */
1283 SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1284 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1285 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1286 "Minimum CDB size");
1287
1288 cam_periph_release(periph);
1289 }
1290
1291 static int
1292 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1293 {
1294 int error, value;
1295
1296 value = *(int *)arg1;
1297
1298 error = sysctl_handle_int(oidp, &value, 0, req);
1299
1300 if ((error != 0)
1301 || (req->newptr == NULL))
1302 return (error);
1303
1304 /*
1305 * Acceptable values here are 6, 10 or 12, or 16.
1306 */
1307 if (value < 6)
1308 value = 6;
1309 else if ((value > 6)
1310 && (value <= 10))
1311 value = 10;
1312 else if ((value > 10)
1313 && (value <= 12))
1314 value = 12;
1315 else if (value > 12)
1316 value = 16;
1317
1318 *(int *)arg1 = value;
1319
1320 return (0);
1321 }
1322
1323 static cam_status
1324 daregister(struct cam_periph *periph, void *arg)
1325 {
1326 struct da_softc *softc;
1327 struct ccb_pathinq cpi;
1328 struct ccb_getdev *cgd;
1329 char tmpstr[80];
1330 caddr_t match;
1331
1332 cgd = (struct ccb_getdev *)arg;
1333 if (periph == NULL) {
1334 kprintf("daregister: periph was NULL!!\n");
1335 return(CAM_REQ_CMP_ERR);
1336 }
1337
1338 if (cgd == NULL) {
1339 kprintf("daregister: no getdev CCB, can't register device\n");
1340 return(CAM_REQ_CMP_ERR);
1341 }
1342
1343 softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1344 LIST_INIT(&softc->pending_ccbs);
1345 softc->state = DA_STATE_PROBE;
1346 bioq_init(&softc->bio_queue);
1347 if (SID_IS_REMOVABLE(&cgd->inq_data))
1348 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1349 if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1350 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1351
1352 periph->softc = softc;
1353
1354 cam_extend_set(daperiphs, periph->unit_number, periph);
1355
1356 /*
1357 * See if this device has any quirks.
1358 */
1359 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1360 (caddr_t)da_quirk_table,
1361 sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1362 sizeof(*da_quirk_table), scsi_inquiry_match);
1363
1364 if (match != NULL)
1365 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1366 else
1367 softc->quirks = DA_Q_NONE;
1368
1369 TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1370
1371 /* Check if the SIM does not want 6 byte commands */
1372 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1373 cpi.ccb_h.func_code = XPT_PATH_INQ;
1374 xpt_action((union ccb *)&cpi);
1375 if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1376 softc->quirks |= DA_Q_NO_6_BYTE;
1377
1378 /*
1379 * RBC devices don't have to support READ(6), only READ(10).
1380 */
1381 if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1382 softc->minimum_cmd_size = 10;
1383 else
1384 softc->minimum_cmd_size = 6;
1385
1386 /*
1387 * Load the user's default, if any.
1388 */
1389 ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1390 periph->unit_number);
1391 TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1392
1393 /*
1394 * 6, 10, 12, and 16 are the currently permissible values.
1395 */
1396 if (softc->minimum_cmd_size < 6)
1397 softc->minimum_cmd_size = 6;
1398 else if ((softc->minimum_cmd_size > 6)
1399 && (softc->minimum_cmd_size <= 10))
1400 softc->minimum_cmd_size = 10;
1401 else if ((softc->minimum_cmd_size > 10)
1402 && (softc->minimum_cmd_size <= 12))
1403 softc->minimum_cmd_size = 12;
1404 else if (softc->minimum_cmd_size > 12)
1405 softc->minimum_cmd_size = 16;
1406
1407 /*
1408 * The DA driver supports a blocksize, but
1409 * we don't know the blocksize until we do
1410 * a read capacity. So, set a flag to
1411 * indicate that the blocksize is
1412 * unavailable right now. We'll clear the
1413 * flag as soon as we've done a read capacity.
1414 */
1415 devstat_add_entry(&softc->device_stats, "da",
1416 periph->unit_number, 0,
1417 DEVSTAT_BS_UNAVAILABLE,
1418 SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1419 DEVSTAT_PRIORITY_DISK);
1420
1421 /*
1422 * Register this media as a disk
1423 */
1424
1425 CAM_SIM_UNLOCK(periph->sim);
1426 disk_create(periph->unit_number, &softc->disk, &da_ops);
1427 softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1428 CAM_SIM_LOCK(periph->sim);
1429
1430 /*
1431 * Add async callbacks for bus reset and
1432 * bus device reset calls. I don't bother
1433 * checking if this fails as, in most cases,
1434 * the system will function just fine without
1435 * them and the only alternative would be to
1436 * not attach the device on failure.
1437 */
1438 xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1439 daasync, periph, periph->path);
1440
1441 /*
1442 * Take an exclusive refcount on the periph while dastart is called
1443 * to finish the probe. The reference will be dropped in dadone at
1444 * the end of probe.
1445 */
1446 cam_periph_hold(periph, 0);
1447 xpt_schedule(periph, /*priority*/5);
1448
1449 /*
1450 * Schedule a periodic event to occasionally send an
1451 * ordered tag to a device.
1452 */
1453 callout_init(&softc->sendordered_c);
1454 callout_reset(&softc->sendordered_c,
1455 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1456 dasendorderedtag, softc);
1457
1458 return(CAM_REQ_CMP);
1459 }
1460
1461 static void
1462 dastart(struct cam_periph *periph, union ccb *start_ccb)
1463 {
1464 struct da_softc *softc;
1465
1466 softc = (struct da_softc *)periph->softc;
1467
1468 switch (softc->state) {
1469 case DA_STATE_NORMAL:
1470 {
1471 /* Pull a buffer from the queue and get going on it */
1472 struct bio *bio;
1473 struct buf *bp;
1474
1475 /*
1476 * See if there is a buf with work for us to do..
1477 */
1478 bio = bioq_first(&softc->bio_queue);
1479 if (periph->immediate_priority <= periph->pinfo.priority) {
1480 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1481 ("queuing for immediate ccb\n"));
1482 start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1483 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1484 periph_links.sle);
1485 periph->immediate_priority = CAM_PRIORITY_NONE;
1486 wakeup(&periph->ccb_list);
1487 } else if (bio == NULL) {
1488 xpt_release_ccb(start_ccb);
1489 } else {
1490 u_int8_t tag_code;
1491
1492 bioq_remove(&softc->bio_queue, bio);
1493 bp = bio->bio_buf;
1494
1495 devstat_start_transaction(&softc->device_stats);
1496
1497 if ((bp->b_flags & B_ORDERED) != 0
1498 || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1499 softc->flags &= ~DA_FLAG_NEED_OTAG;
1500 softc->ordered_tag_count++;
1501 tag_code = MSG_ORDERED_Q_TAG;
1502 } else {
1503 tag_code = MSG_SIMPLE_Q_TAG;
1504 }
1505
1506 KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1507
1508 scsi_read_write(&start_ccb->csio,
1509 /*retries*/da_retry_count,
1510 dadone,
1511 tag_code,
1512 (bp->b_cmd == BUF_CMD_READ),
1513 /*byte2*/0,
1514 softc->minimum_cmd_size,
1515 bio->bio_offset / softc->params.secsize,
1516 bp->b_bcount / softc->params.secsize,
1517 bp->b_data,
1518 bp->b_bcount,
1519 /*sense_len*/SSD_FULL_SIZE,
1520 da_default_timeout * 1000);
1521 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1522
1523 /*
1524 * Block out any asyncronous callbacks
1525 * while we touch the pending ccb list.
1526 */
1527 LIST_INSERT_HEAD(&softc->pending_ccbs,
1528 &start_ccb->ccb_h, periph_links.le);
1529
1530 softc->outstanding_cmds++;
1531 /* We expect a unit attention from this device */
1532 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1533 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1534 softc->flags &= ~DA_FLAG_RETRY_UA;
1535 }
1536
1537 start_ccb->ccb_h.ccb_bio = bio;
1538 bio = bioq_first(&softc->bio_queue);
1539
1540 xpt_action(start_ccb);
1541 }
1542
1543 if (bio != NULL) {
1544 /* Have more work to do, so ensure we stay scheduled */
1545 xpt_schedule(periph, /* XXX priority */1);
1546 }
1547 break;
1548 }
1549 case DA_STATE_PROBE:
1550 {
1551 struct ccb_scsiio *csio;
1552 struct scsi_read_capacity_data *rcap;
1553
1554 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
1555 csio = &start_ccb->csio;
1556 scsi_read_capacity(csio,
1557 /*retries*/4,
1558 dadone,
1559 MSG_SIMPLE_Q_TAG,
1560 rcap,
1561 SSD_FULL_SIZE,
1562 /*timeout*/5000);
1563 start_ccb->ccb_h.ccb_bio = NULL;
1564 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1565 xpt_action(start_ccb);
1566 break;
1567 }
1568 case DA_STATE_PROBE2:
1569 {
1570 struct ccb_scsiio *csio;
1571 struct scsi_read_capacity_data_long *rcaplong;
1572
1573 rcaplong = (struct scsi_read_capacity_data_long *)
1574 kmalloc(sizeof(*rcaplong), M_SCSIDA, M_INTWAIT | M_ZERO);
1575 if (rcaplong == NULL) {
1576 kprintf("dastart: Couldn't allocate read_capacity\n");
1577 /* da_free_periph??? */
1578 break;
1579 }
1580 csio = &start_ccb->csio;
1581 scsi_read_capacity_16(csio,
1582 /*retries*/ 4,
1583 /*cbfcnp*/ dadone,
1584 /*tag_action*/ MSG_SIMPLE_Q_TAG,
1585 /*lba*/ 0,
1586 /*reladr*/ 0,
1587 /*pmi*/ 0,
1588 rcaplong,
1589 /*sense_len*/ SSD_FULL_SIZE,
1590 /*timeout*/ 60000);
1591 start_ccb->ccb_h.ccb_bio = NULL;
1592 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1593 xpt_action(start_ccb);
1594 break;
1595 }
1596 }
1597 }
1598
1599 static int
1600 cmd6workaround(union ccb *ccb)
1601 {
1602 struct scsi_rw_6 cmd6;
1603 struct scsi_rw_10 *cmd10;
1604 struct da_softc *softc;
1605 u_int8_t *cdb;
1606 int frozen;
1607
1608 cdb = ccb->csio.cdb_io.cdb_bytes;
1609
1610 /* Translation only possible if CDB is an array and cmd is R/W6 */
1611 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1612 (*cdb != READ_6 && *cdb != WRITE_6))
1613 return 0;
1614
1615 xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1616 "increasing minimum_cmd_size to 10.\n");
1617 softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1618 softc->minimum_cmd_size = 10;
1619
1620 bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1621 cmd10 = (struct scsi_rw_10 *)cdb;
1622 cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1623 cmd10->byte2 = 0;
1624 scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1625 cmd10->reserved = 0;
1626 scsi_ulto2b(cmd6.length, cmd10->length);
1627 cmd10->control = cmd6.control;
1628 ccb->csio.cdb_len = sizeof(*cmd10);
1629
1630 /* Requeue request, unfreezing queue if necessary */
1631 frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1632 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1633 xpt_action(ccb);
1634 if (frozen) {
1635 cam_release_devq(ccb->ccb_h.path,
1636 /*relsim_flags*/0,
1637 /*reduction*/0,
1638 /*timeout*/0,
1639 /*getcount_only*/0);
1640 }
1641 return (ERESTART);
1642 }
1643
1644 static void
1645 dadone(struct cam_periph *periph, union ccb *done_ccb)
1646 {
1647 struct da_softc *softc;
1648 struct ccb_scsiio *csio;
1649
1650 softc = (struct da_softc *)periph->softc;
1651 csio = &done_ccb->csio;
1652 switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1653 case DA_CCB_BUFFER_IO:
1654 {
1655 struct buf *bp;
1656 struct bio *bio;
1657
1658 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1659 bp = bio->bio_buf;
1660 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1661 int error;
1662 int sf;
1663
1664 if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1665 sf = SF_RETRY_UA;
1666 else
1667 sf = 0;
1668
1669 error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1670 if (error == ERESTART) {
1671 /*
1672 * A retry was scheuled, so
1673 * just return.
1674 */
1675 return;
1676 }
1677 if (error != 0) {
1678 struct bio *q_bio;
1679 struct buf *q_bp;
1680
1681 if (error == ENXIO) {
1682 /*
1683 * Catastrophic error. Mark our pack as
1684 * invalid.
1685 */
1686 /*
1687 * XXX See if this is really a media
1688 * XXX change first?
1689 */
1690 xpt_print(periph->path,
1691 "Invalidating pack\n");
1692 softc->flags |= DA_FLAG_PACK_INVALID;
1693 }
1694
1695 /*
1696 * return all queued I/O with EIO, so that
1697 * the client can retry these I/Os in the
1698 * proper order should it attempt to recover.
1699 */
1700 while ((q_bio = bioq_first(&softc->bio_queue))
1701 != NULL) {
1702 bioq_remove(&softc->bio_queue, q_bio);
1703 q_bp = q_bio->bio_buf;
1704 q_bp->b_resid = q_bp->b_bcount;
1705 q_bp->b_error = EIO;
1706 q_bp->b_flags |= B_ERROR;
1707 biodone(q_bio);
1708 }
1709 bp->b_error = error;
1710 bp->b_resid = bp->b_bcount;
1711 bp->b_flags |= B_ERROR;
1712 } else {
1713 bp->b_resid = csio->resid;
1714 bp->b_error = 0;
1715 if (bp->b_resid != 0)
1716 bp->b_flags |= B_ERROR;
1717 }
1718 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1719 cam_release_devq(done_ccb->ccb_h.path,
1720 /*relsim_flags*/0,
1721 /*reduction*/0,
1722 /*timeout*/0,
1723 /*getcount_only*/0);
1724 } else {
1725 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1726 panic("REQ_CMP with QFRZN");
1727 bp->b_resid = csio->resid;
1728 if (csio->resid > 0)
1729 bp->b_flags |= B_ERROR;
1730 }
1731
1732 /*
1733 * Block out any asyncronous callbacks
1734 * while we touch the pending ccb list.
1735 */
1736 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1737 softc->outstanding_cmds--;
1738 if (softc->outstanding_cmds == 0)
1739 softc->flags |= DA_FLAG_WENT_IDLE;
1740
1741 devstat_end_transaction_buf(&softc->device_stats, bp);
1742 biodone(bio);
1743 break;
1744 }
1745 case DA_CCB_PROBE:
1746 case DA_CCB_PROBE2:
1747 {
1748 struct scsi_read_capacity_data *rdcap;
1749 struct scsi_read_capacity_data_long *rcaplong;
1750 char announce_buf[80];
1751
1752 rdcap = NULL;
1753 rcaplong = NULL;
1754 if (softc->state == DA_STATE_PROBE)
1755 rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1756 else
1757 rcaplong = (struct scsi_read_capacity_data_long *)
1758 csio->data_ptr;
1759
1760 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1761 struct disk_params *dp;
1762 uint32_t block_size;
1763 uint64_t maxsector;
1764
1765 if (softc->state == DA_STATE_PROBE) {
1766 block_size = scsi_4btoul(rdcap->length);
1767 maxsector = scsi_4btoul(rdcap->addr);
1768
1769 /*
1770 * According to SBC-2, if the standard 10
1771 * byte READ CAPACITY command returns 2^32,
1772 * we should issue the 16 byte version of
1773 * the command, since the device in question
1774 * has more sectors than can be represented
1775 * with the short version of the command.
1776 */
1777 if (maxsector == 0xffffffff) {
1778 softc->state = DA_STATE_PROBE2;
1779 kfree(rdcap, M_SCSIDA);
1780 xpt_release_ccb(done_ccb);
1781 xpt_schedule(periph, /*priority*/5);
1782 return;
1783 }
1784 } else {
1785 block_size = scsi_4btoul(rcaplong->length);
1786 maxsector = scsi_8btou64(rcaplong->addr);
1787 }
1788 dasetgeom(periph, block_size, maxsector);
1789 dp = &softc->params;
1790 ksnprintf(announce_buf, sizeof(announce_buf),
1791 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1792 (uintmax_t) (((uintmax_t)dp->secsize *
1793 dp->sectors) / (1024*1024)),
1794 (uintmax_t)dp->sectors,
1795 dp->secsize, dp->heads, dp->secs_per_track,
1796 dp->cylinders);
1797 } else {
1798 int error;
1799
1800 announce_buf[0] = '\0';
1801
1802 /*
1803 * Retry any UNIT ATTENTION type errors. They
1804 * are expected at boot.
1805 */
1806 error = daerror(done_ccb, CAM_RETRY_SELTO,
1807 SF_RETRY_UA|SF_NO_PRINT);
1808 if (error == ERESTART) {
1809 /*
1810 * A retry was scheuled, so
1811 * just return.
1812 */
1813 return;
1814 } else if (error != 0) {
1815 struct scsi_sense_data *sense;
1816 int asc, ascq;
1817 int sense_key, error_code;
1818 int have_sense;
1819 cam_status status;
1820 struct ccb_getdev cgd;
1821
1822 /* Don't wedge this device's queue */
1823 status = done_ccb->ccb_h.status;
1824 if ((status & CAM_DEV_QFRZN) != 0)
1825 cam_release_devq(done_ccb->ccb_h.path,
1826 /*relsim_flags*/0,
1827 /*reduction*/0,
1828 /*timeout*/0,
1829 /*getcount_only*/0);
1830
1831
1832 xpt_setup_ccb(&cgd.ccb_h,
1833 done_ccb->ccb_h.path,
1834 /* priority */ 1);
1835 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1836 xpt_action((union ccb *)&cgd);
1837
1838 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1839 || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1840 || ((status & CAM_AUTOSNS_VALID) == 0))
1841 have_sense = FALSE;
1842 else
1843 have_sense = TRUE;
1844
1845 if (have_sense) {
1846 sense = &csio->sense_data;
1847 scsi_extract_sense(sense, &error_code,
1848 &sense_key,
1849 &asc, &ascq);
1850 }
1851 /*
1852 * Attach to anything that claims to be a
1853 * direct access or optical disk device,
1854 * as long as it doesn't return a "Logical
1855 * unit not supported" (0x25) error.
1856 */
1857 if ((have_sense) && (asc != 0x25)
1858 && (error_code == SSD_CURRENT_ERROR)) {
1859 const char *sense_key_desc;
1860 const char *asc_desc;
1861
1862 scsi_sense_desc(sense_key, asc, ascq,
1863 &cgd.inq_data,
1864 &sense_key_desc,
1865 &asc_desc);
1866 ksnprintf(announce_buf,
1867 sizeof(announce_buf),
1868 "Attempt to query device "
1869 "size failed: %s, %s",
1870 sense_key_desc,
1871 asc_desc);
1872 } else {
1873 if (have_sense)
1874 scsi_sense_print(
1875 &done_ccb->csio);
1876 else {
1877 xpt_print(periph->path,
1878 "got CAM status %#x\n",
1879 done_ccb->ccb_h.status);
1880 }
1881
1882 xpt_print(periph->path, "fatal error, "
1883 "failed to attach to device\n");
1884
1885 /*
1886 * Free up resources.
1887 */
1888 cam_periph_invalidate(periph);
1889 }
1890 }
1891 }
1892 kfree(csio->data_ptr, M_SCSIDA);
1893 if (announce_buf[0] != '\0') {
1894 xpt_announce_periph(periph, announce_buf);
1895 /*
1896 * Create our sysctl variables, now that we know
1897 * we have successfully attached.
1898 */
1899 taskqueue_enqueue(taskqueue_thread[mycpuid],
1900 &softc->sysctl_task);
1901 }
1902 softc->state = DA_STATE_NORMAL;
1903 /*
1904 * Since our peripheral may be invalidated by an error
1905 * above or an external event, we must release our CCB
1906 * before releasing the probe lock on the peripheral.
1907 * The peripheral will only go away once the last lock
1908 * is removed, and we need it around for the CCB release
1909 * operation.
1910 */
1911 xpt_release_ccb(done_ccb);
1912 cam_periph_unhold(periph);
1913 return;
1914 }
1915 case DA_CCB_WAITING:
1916 {
1917 /* Caller will release the CCB */
1918 wakeup(&done_ccb->ccb_h.cbfcnp);
1919 return;
1920 }
1921 case DA_CCB_DUMP:
1922 /* No-op. We're polling */
1923 return;
1924 default:
1925 break;
1926 }
1927 xpt_release_ccb(done_ccb);
1928 }
1929
1930 static int
1931 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1932 {
1933 struct da_softc *softc;
1934 struct cam_periph *periph;
1935 int error;
1936
1937 periph = xpt_path_periph(ccb->ccb_h.path);
1938 softc = (struct da_softc *)periph->softc;
1939
1940 /*
1941 * Automatically detect devices that do not support
1942 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1943 */
1944 error = 0;
1945 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1946 error = cmd6workaround(ccb);
1947 } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1948 CAM_SCSI_STATUS_ERROR)
1949 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1950 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1951 && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1952 && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1953 int sense_key, error_code, asc, ascq;
1954
1955 scsi_extract_sense(&ccb->csio.sense_data,
1956 &error_code, &sense_key, &asc, &ascq);
1957 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1958 error = cmd6workaround(ccb);
1959 }
1960 if (error == ERESTART)
1961 return (ERESTART);
1962
1963 /*
1964 * XXX
1965 * Until we have a better way of doing pack validation,
1966 * don't treat UAs as errors.
1967 */
1968 sense_flags |= SF_RETRY_UA;
1969 return(cam_periph_error(ccb, cam_flags, sense_flags,
1970 &softc->saved_ccb));
1971 }
1972
1973 static void
1974 daprevent(struct cam_periph *periph, int action)
1975 {
1976 struct da_softc *softc;
1977 union ccb *ccb;
1978 int error;
1979
1980 softc = (struct da_softc *)periph->softc;
1981
1982 if (((action == PR_ALLOW)
1983 && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1984 || ((action == PR_PREVENT)
1985 && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1986 return;
1987 }
1988
1989 ccb = cam_periph_getccb(periph, /*priority*/1);
1990
1991 scsi_prevent(&ccb->csio,
1992 /*retries*/1,
1993 /*cbcfp*/dadone,
1994 MSG_SIMPLE_Q_TAG,
1995 action,
1996 SSD_FULL_SIZE,
1997 5000);
1998
1999 error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
2000 SF_RETRY_UA, &softc->device_stats);
2001
2002 if (error == 0) {
2003 if (action == PR_ALLOW)
2004 softc->flags &= ~DA_FLAG_PACK_LOCKED;
2005 else
2006 softc->flags |= DA_FLAG_PACK_LOCKED;
2007 }
2008
2009 xpt_release_ccb(ccb);
2010 }
2011
2012 static int
2013 dagetcapacity(struct cam_periph *periph)
2014 {
2015 struct da_softc *softc;
2016 union ccb *ccb;
2017 struct scsi_read_capacity_data *rcap;
2018 struct scsi_read_capacity_data_long *rcaplong;
2019 uint32_t block_len;
2020 uint64_t maxsector;
2021 int error;
2022
2023 softc = (struct da_softc *)periph->softc;
2024 block_len = 0;
2025 maxsector = 0;
2026 error = 0;
2027
2028 /* Do a read capacity */
2029 rcap = (struct scsi_read_capacity_data *)kmalloc(sizeof(*rcaplong),
2030 M_SCSIDA, M_INTWAIT);
2031
2032 ccb = cam_periph_getccb(periph, /*priority*/1);
2033 scsi_read_capacity(&ccb->csio,
2034 /*retries*/4,
2035 /*cbfncp*/dadone,
2036 MSG_SIMPLE_Q_TAG,
2037 rcap,
2038 SSD_FULL_SIZE,
2039 /*timeout*/60000);
2040 ccb->ccb_h.ccb_bio = NULL;
2041
2042 error = cam_periph_runccb(ccb, daerror,
2043 /*cam_flags*/CAM_RETRY_SELTO,
2044 /*sense_flags*/SF_RETRY_UA,
2045 &softc->device_stats);
2046
2047 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2048 cam_release_devq(ccb->ccb_h.path,
2049 /*relsim_flags*/0,
2050 /*reduction*/0,
2051 /*timeout*/0,
2052 /*getcount_only*/0);
2053
2054 if (error == 0) {
2055 block_len = scsi_4btoul(rcap->length);
2056 maxsector = scsi_4btoul(rcap->addr);
2057
2058 if (maxsector != 0xffffffff)
2059 goto done;
2060 } else
2061 goto done;
2062
2063 rcaplong = (struct scsi_read_capacity_data_long *)rcap;
2064
2065 scsi_read_capacity_16(&ccb->csio,
2066 /*retries*/ 4,
2067 /*cbfcnp*/ dadone,
2068 /*tag_action*/ MSG_SIMPLE_Q_TAG,
2069 /*lba*/ 0,
2070 /*reladr*/ 0,
2071 /*pmi*/ 0,
2072 rcaplong,
2073 /*sense_len*/ SSD_FULL_SIZE,
2074 /*timeout*/ 60000);
2075 ccb->ccb_h.ccb_bio = NULL;
2076
2077 error = cam_periph_runccb(ccb, daerror,
2078 /*cam_flags*/CAM_RETRY_SELTO,
2079 /*sense_flags*/SF_RETRY_UA,
2080 &softc->device_stats);
2081
2082 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2083 cam_release_devq(ccb->ccb_h.path,
2084 /*relsim_flags*/0,
2085 /*reduction*/0,
2086 /*timeout*/0,
2087 /*getcount_only*/0);
2088
2089 if (error == 0) {
2090 block_len = scsi_4btoul(rcaplong->length);
2091 maxsector = scsi_8btou64(rcaplong->addr);
2092 }
2093
2094 done:
2095
2096 if (error == 0)
2097 dasetgeom(periph, block_len, maxsector);
2098
2099 xpt_release_ccb(ccb);
2100
2101 kfree(rcap, M_SCSIDA);
2102
2103 return (error);
2104 }
2105
2106 static void
2107 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2108 {
2109 struct ccb_calc_geometry ccg;
2110 struct da_softc *softc;
2111 struct disk_params *dp;
2112
2113 softc = (struct da_softc *)periph->softc;
2114
2115 dp = &softc->params;
2116 dp->secsize = block_len;
2117 dp->sectors = maxsector + 1;
2118 /*
2119 * Have the controller provide us with a geometry
2120 * for this disk. The only time the geometry
2121 * matters is when we boot and the controller
2122 * is the only one knowledgeable enough to come
2123 * up with something that will make this a bootable
2124 * device.
2125 */
2126 xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2127 ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2128 ccg.block_size = dp->secsize;
2129 ccg.volume_size = dp->sectors;
2130 ccg.heads = 0;
2131 ccg.secs_per_track = 0;
2132 ccg.cylinders = 0;
2133 xpt_action((union ccb*)&ccg);
2134 if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2135 /*
2136 * We don't know what went wrong here- but just pick
2137 * a geometry so we don't have nasty things like divide
2138 * by zero.
2139 */
2140 dp->heads = 255;
2141 dp->secs_per_track = 255;
2142 dp->cylinders = dp->sectors / (255 * 255);
2143 if (dp->cylinders == 0) {
2144 dp->cylinders = 1;
2145 }
2146 } else {
2147 dp->heads = ccg.heads;
2148 dp->secs_per_track = ccg.secs_per_track;
2149 dp->cylinders = ccg.cylinders;
2150 }
2151 }
2152
2153 static void
2154 dasendorderedtag(void *arg)
2155 {
2156 struct da_softc *softc = arg;
2157
2158 if (da_send_ordered) {
2159 if ((softc->ordered_tag_count == 0)
2160 && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2161 softc->flags |= DA_FLAG_NEED_OTAG;
2162 }
2163 if (softc->outstanding_cmds > 0)
2164 softc->flags &= ~DA_FLAG_WENT_IDLE;
2165
2166 softc->ordered_tag_count = 0;
2167 }
2168 /* Queue us up again */
2169 callout_reset(&softc->sendordered_c,
2170 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
2171 dasendorderedtag, softc);
2172 }
2173
2174 /*
2175 * Step through all DA peripheral drivers, and if the device is still open,
2176 * sync the disk cache to physical media.
2177 */
2178 static void
2179 dashutdown(void * arg, int howto)
2180 {
2181 struct cam_periph *periph;
2182 struct da_softc *softc;
2183
2184 TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2185 union ccb ccb;
2186
2187 cam_periph_lock(periph);
2188 softc = (struct da_softc *)periph->softc;
2189
2190 /*
2191 * We only sync the cache if the drive is still open, and
2192 * if the drive is capable of it..
2193 */
2194 if (((softc->flags & DA_FLAG_OPEN) == 0)
2195 || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2196 cam_periph_unlock(periph);
2197 continue;
2198 }
2199
2200 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2201
2202 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2203 scsi_synchronize_cache(&ccb.csio,
2204 /*retries*/1,
2205 /*cbfcnp*/dadone,
2206 MSG_SIMPLE_Q_TAG,
2207 /*begin_lba*/0, /* whole disk */
2208 /*lb_count*/0,
2209 SSD_FULL_SIZE,
2210 60 * 60 * 1000);
2211
2212 xpt_polled_action(&ccb);
2213
2214 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2215 if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2216 CAM_SCSI_STATUS_ERROR)
2217 && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2218 int error_code, sense_key, asc, ascq;
2219
2220 scsi_extract_sense(&ccb.csio.sense_data,
2221 &error_code, &sense_key,
2222 &asc, &ascq);
2223
2224 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2225 scsi_sense_print(&ccb.csio);
2226 } else {
2227 xpt_print(periph->path, "Synchronize "
2228 "cache failed, status == 0x%x, scsi status "
2229 "== 0x%x\n", ccb.ccb_h.status,
2230 ccb.csio.scsi_status);
2231 }
2232 }
2233
2234 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2235 cam_release_devq(ccb.ccb_h.path,
2236 /*relsim_flags*/0,
2237 /*reduction*/0,
2238 /*timeout*/0,
2239 /*getcount_only*/0);
2240
2241 cam_periph_unlock(periph);
2242 }
2243 }
2244
2245 #else /* !_KERNEL */
2246
2247 /*
2248 * XXX This is only left out of the kernel build to silence warnings. If,
2249 * for some reason this function is used in the kernel, the ifdefs should
2250 * be moved so it is included both in the kernel and userland.
2251 */
2252 void
2253 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2254 void (*cbfcnp)(struct cam_periph *, union ccb *),
2255 u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2256 u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2257 u_int32_t timeout)
2258 {
2259 struct scsi_format_unit *scsi_cmd;
2260
2261 scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2262 scsi_cmd->opcode = FORMAT_UNIT;
2263 scsi_cmd->byte2 = byte2;
2264 scsi_ulto2b(ileave, scsi_cmd->interleave);
2265
2266 cam_fill_csio(csio,
2267 retries,
2268 cbfcnp,
2269 /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2270 tag_action,
2271 data_ptr,
2272 dxfer_len,
2273 sense_len,
2274 sizeof(*scsi_cmd),
2275 timeout);
2276 }
2277
2278 #endif /* _KERNEL */
DragonFly BSD