Rename printf -> kprintf in sys/ and add some defines where necessary
[dragonfly.git] / sys / bus / cam / scsi / scsi_da.c
1 /*
2  * Implementation of SCSI Direct Access Peripheral driver for CAM.
3  *
4  * Copyright (c) 1997 Justin T. Gibbs.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions, and the following disclaimer,
12  *    without modification, immediately at the beginning of the file.
13  * 2. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $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 1.34 2006/12/22 23:12:16 swildner Exp $
30  */
31
32 #ifdef _KERNEL
33 #include "opt_hw_wdog.h"
34 #endif /* _KERNEL */
35
36 #include <sys/param.h>
37 #include <sys/bootmaj.h>
38
39 #ifdef _KERNEL
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/buf.h>
43 #include <sys/sysctl.h>
44 #include <sys/taskqueue.h>
45 #endif /* _KERNEL */
46
47 #include <sys/devicestat.h>
48 #include <sys/conf.h>
49 #ifdef _KERNEL
50 #include <sys/disk.h>
51 #include <sys/eventhandler.h>
52 #include <sys/malloc.h>
53 #include <sys/cons.h>
54 #include <sys/proc.h>
55 #endif
56 #include <sys/buf2.h>
57 #ifdef _KERNEL
58 #include <sys/thread2.h>
59 #endif
60
61 #include <machine/md_var.h>
62
63 #ifdef _KERNEL
64 #include <vm/vm.h>
65 #include <vm/pmap.h>
66 #endif
67
68 #ifndef _KERNEL
69 #include <stdio.h>
70 #include <string.h>
71 #endif /* _KERNEL */
72
73 #include "../cam.h"
74 #include "../cam_ccb.h"
75 #include "../cam_extend.h"
76 #include "../cam_periph.h"
77 #include "../cam_xpt_periph.h"
78
79 #include "scsi_message.h"
80
81 #ifndef _KERNEL 
82 #include "scsi_da.h"
83 #endif /* !_KERNEL */
84
85 #ifdef _KERNEL
86 typedef enum {
87         DA_STATE_PROBE,
88         DA_STATE_NORMAL
89 } da_state;
90
91 typedef enum {
92         DA_FLAG_PACK_INVALID    = 0x001,
93         DA_FLAG_NEW_PACK        = 0x002,
94         DA_FLAG_PACK_LOCKED     = 0x004,
95         DA_FLAG_PACK_REMOVABLE  = 0x008,
96         DA_FLAG_TAGGED_QUEUING  = 0x010,
97         DA_FLAG_NEED_OTAG       = 0x020,
98         DA_FLAG_WENT_IDLE       = 0x040,
99         DA_FLAG_RETRY_UA        = 0x080,
100         DA_FLAG_OPEN            = 0x100,
101         DA_FLAG_SCTX_INIT       = 0x200
102 } da_flags;
103
104 typedef enum {
105         DA_Q_NONE               = 0x00,
106         DA_Q_NO_SYNC_CACHE      = 0x01,
107         DA_Q_NO_6_BYTE          = 0x02,
108         DA_Q_NO_PREVENT         = 0x04
109 } da_quirks;
110
111 typedef enum {
112         DA_CCB_PROBE            = 0x01,
113         DA_CCB_BUFFER_IO        = 0x02,
114         DA_CCB_WAITING          = 0x03,
115         DA_CCB_DUMP             = 0x04,
116         DA_CCB_TYPE_MASK        = 0x0F,
117         DA_CCB_RETRY_UA         = 0x10
118 } da_ccb_state;
119
120 /* Offsets into our private area for storing information */
121 #define ccb_state       ppriv_field0
122 #define ccb_bio         ppriv_ptr1
123
124 struct disk_params {
125         u_int8_t  heads;
126         u_int16_t cylinders;
127         u_int8_t  secs_per_track;
128         u_int32_t secsize;      /* Number of bytes/sector */
129         u_int32_t sectors;      /* total number sectors */
130 };
131
132 struct da_softc {
133         struct   bio_queue_head bio_queue;
134         struct   devstat device_stats;
135         SLIST_ENTRY(da_softc) links;
136         LIST_HEAD(, ccb_hdr) pending_ccbs;
137         da_state state;
138         da_flags flags; 
139         da_quirks quirks;
140         int      minimum_cmd_size;
141         int      ordered_tag_count;
142         struct   disk_params params;
143         struct   disk disk;
144         union    ccb saved_ccb;
145         struct task             sysctl_task;
146         struct sysctl_ctx_list  sysctl_ctx;
147         struct sysctl_oid       *sysctl_tree;
148 };
149
150 struct da_quirk_entry {
151         struct scsi_inquiry_pattern inq_pat;
152         da_quirks quirks;
153 };
154
155 static const char quantum[] = "QUANTUM";
156 static const char microp[] = "MICROP";
157
158 static struct da_quirk_entry da_quirk_table[] =
159 {
160         /* SPI, FC devices */
161         {
162                 /*
163                  * Fujitsu M2513A MO drives.
164                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
165                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
166                  * Reported by: W.Scholten <whs@xs4all.nl>
167                  */
168                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
169                 /*quirks*/ DA_Q_NO_SYNC_CACHE
170         },
171         {
172                 /* See above. */
173                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
174                 /*quirks*/ DA_Q_NO_SYNC_CACHE
175         },
176         {
177                 /*
178                  * This particular Fujitsu drive doesn't like the
179                  * synchronize cache command.
180                  * Reported by: Tom Jackson <toj@gorilla.net>
181                  */
182                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
183                 /*quirks*/ DA_Q_NO_SYNC_CACHE
184         
185         },
186         {
187                 /*
188                  * This drive doesn't like the synchronize cache command
189                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
190                  * in NetBSD PR kern/6027, August 24, 1998.
191                  */
192                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
193                 /*quirks*/ DA_Q_NO_SYNC_CACHE
194         },
195         {
196                 /*
197                  * This drive doesn't like the synchronize cache command
198                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
199                  * (PR 8882).
200                  */
201                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
202                 /*quirks*/ DA_Q_NO_SYNC_CACHE
203         },
204         {
205                 /*
206                  * Doesn't like the synchronize cache command.
207                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
208                  */
209                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
210                 /*quirks*/ DA_Q_NO_SYNC_CACHE
211         },
212         {
213                 /*
214                  * Doesn't like the synchronize cache command.
215                  */
216                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
217                 /*quirks*/ DA_Q_NO_SYNC_CACHE
218         },
219         {
220                 /*
221                  * Doesn't like the synchronize cache command.
222                  */
223                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
224                 /*quirks*/ DA_Q_NO_SYNC_CACHE
225         },
226         {
227                 /*
228                  * Doesn't work correctly with 6 byte reads/writes.
229                  * Returns illegal request, and points to byte 9 of the
230                  * 6-byte CDB.
231                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
232                  */
233                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
234                 /*quirks*/ DA_Q_NO_6_BYTE
235         },
236         {
237                 /* See above. */
238                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
239                 /*quirks*/ DA_Q_NO_6_BYTE
240         },
241         /* XXX USB floppy quirks temporarily enabled for 4.9R */
242         /* USB floppy devices supported by umass(4) */
243         {
244                 /*
245                  * This USB floppy drive uses the UFI command set. This
246                  * command set is a derivative of the ATAPI command set and
247                  * does not support READ_6 commands only READ_10. It also does
248                  * not support sync cache (0x35).
249                  */
250                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
251                 /*quirks*/ DA_Q_NO_SYNC_CACHE
252         },
253         {
254                 /* Another USB floppy */
255                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MATSHITA", "FDD CF-VFDU*","*"},
256                 /*quirks*/ DA_Q_NO_SYNC_CACHE
257         },
258         {
259                 /*
260                  * The vendor, product and version strings coming from the
261                  * controller are null terminated instead of being padded with
262                  * spaces. The trailing wildcard character '*' is required.
263                  */
264                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SMSC*", "USB FDC*","*"},
265                 /*quirks*/ DA_Q_NO_SYNC_CACHE
266         },
267         {
268                 /*
269                  * SmartDisk (Mitsumi) USB floppy drive
270                  * PR: kern/50226
271                  */
272                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MITSUMI", "USB FDD", "*"},
273                 /*quirks*/ DA_Q_NO_SYNC_CACHE
274         },
275         {
276                 /*
277                  * The CISS RAID controllers do not support SYNC_CACHE
278                  */
279                 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
280                 /*quirks*/ DA_Q_NO_SYNC_CACHE
281         },
282 #ifdef DA_OLD_QUIRKS
283         /* USB mass storage devices supported by umass(4) */
284         {
285                 /*
286                  * Sony Memory Stick adapter MSAC-US1 and
287                  * Sony PCG-C1VJ Internal Memory Stick Slot (MSC-U01).
288                  * Make all sony MS* products use this quirk.
289                  */
290                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "MS*", "*"},
291                 /*quirks*/ DA_Q_NO_SYNC_CACHE
292         },
293         {
294                 /*
295                  * Sony Memory Stick adapter for the CLIE series
296                  * of PalmOS PDA's
297                  */
298                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "CLIE*", "*"},
299                 /*quirks*/ DA_Q_NO_SYNC_CACHE
300         },
301         {
302                 /*
303                  * Intelligent Stick USB disk-on-key
304                  * PR: kern/53005
305                  */
306                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB Card",
307                  "IntelligentStick*", "*"},
308                 /*quirks*/ DA_Q_NO_SYNC_CACHE
309         },
310         {
311                 /*
312                  * Sony DSC cameras (DSC-S30, DSC-S50, DSC-S70)
313                  */
314                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
315                 /*quirks*/ DA_Q_NO_SYNC_CACHE
316         },
317         {
318                 /*
319                  * Microtech USB CameraMate
320                  */
321                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "eUSB    Compact*",
322                  "Compact Flash*", "*"},
323                 /*quirks*/ DA_Q_NO_SYNC_CACHE
324         },
325         {
326                 /*
327                  * Olympus digital cameras (C-3040ZOOM, C-2040ZOOM, C-1)
328                  */
329                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "C-*", "*"},
330                 /*quirks*/ DA_Q_NO_SYNC_CACHE
331         },
332         {
333                 /*
334                  * Olympus digital cameras (E-100RS, E-10).
335                  */
336                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "E-*", "*"},
337                 /*quirks*/ DA_Q_NO_SYNC_CACHE
338         },
339         {
340                 /*
341                  * KingByte Pen Drives
342                  */
343                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NO BRAND", "PEN DRIVE", "*"},
344                 /*quirks*/ DA_Q_NO_SYNC_CACHE
345         },
346         {
347                 /*
348                  * iRiver iFP MP3 player (with UMS Firmware)
349                  * PR: kern/54881, i386/63941, kern/66124
350                  */
351                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
352                 /*quirks*/ DA_Q_NO_SYNC_CACHE
353         },
354         {
355                 /*
356                  * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
357                  * PR: kern/70158
358                  */
359                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "NexIA+*", "*"},
360                 /*quirks*/ DA_Q_NO_SYNC_CACHE
361         },
362         {
363                 /*
364                  * FujiFilm Camera
365                  */
366                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT",
367                  "USB-DRIVEUNIT", "*"},
368                 /*quirks*/ DA_Q_NO_SYNC_CACHE
369         },
370         {
371                 /*
372                  * Minolta Dimage E203
373                  */
374                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"},
375                 /*quirks*/ DA_Q_NO_SYNC_CACHE
376         },
377         {
378                 /*
379                  * Apacer HandyDrive
380                  * PR: kern/43627
381                  */
382                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"},
383                 /*quirks*/ DA_Q_NO_SYNC_CACHE
384         },
385         {
386                 /*
387                  * Daisy Technology PhotoClip on Zoran chip
388                  * PR: kern/43580
389                  */
390                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"},
391                 /*quirks*/ DA_Q_NO_SYNC_CACHE
392         },
393         {
394                 /*
395                  * Sony USB Key-Storage
396                  * PR: kern/46386
397                  */
398                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"},
399                 /*quirks*/ DA_Q_NO_SYNC_CACHE
400         },
401 #endif /* DA_OLD_QUIRKS */
402         {
403                 /*
404                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
405                  * PR: kern/51675
406                  */
407                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
408                 /*quirks*/ DA_Q_NO_SYNC_CACHE
409         },
410         {
411                 /*
412                  * Jungsoft NEXDISK USB flash key
413                  * PR: kern/54737
414                  */
415                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
416                 /*quirks*/ DA_Q_NO_SYNC_CACHE
417         },
418         {
419                 /*
420                  * Creative Nomad MUVO mp3 player (USB)
421                  * PR: kern/53094
422                  */
423                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
424                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
425         },
426 };
427
428 static  d_open_t        daopen;
429 static  d_close_t       daclose;
430 static  d_strategy_t    dastrategy;
431 static  d_ioctl_t       daioctl;
432 static  d_dump_t        dadump;
433 static  periph_init_t   dainit;
434 static  void            daasync(void *callback_arg, u_int32_t code,
435                                 struct cam_path *path, void *arg);
436 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
437 static  periph_ctor_t   daregister;
438 static  periph_dtor_t   dacleanup;
439 static  periph_start_t  dastart;
440 static  periph_oninv_t  daoninvalidate;
441 static  void            dadone(struct cam_periph *periph,
442                                union ccb *done_ccb);
443 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
444                                 u_int32_t sense_flags);
445 static void             daprevent(struct cam_periph *periph, int action);
446 static void             dasetgeom(struct cam_periph *periph,
447                                   struct scsi_read_capacity_data * rdcap);
448 static timeout_t        dasendorderedtag;
449 static void             dashutdown(void *arg, int howto);
450
451 #ifndef DA_DEFAULT_TIMEOUT
452 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
453 #endif
454
455 #ifndef DA_DEFAULT_RETRY
456 #define DA_DEFAULT_RETRY        4
457 #endif
458
459 static int da_retry_count = DA_DEFAULT_RETRY;
460 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
461 static struct callout dasendorderedtag_ch;
462
463 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
464             "CAM Direct Access Disk driver");
465 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
466            &da_retry_count, 0, "Normal I/O retry count");
467 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
468 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
469            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
470 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
471
472 /*
473  * DA_ORDEREDTAG_INTERVAL determines how often, relative
474  * to the default timeout, we check to see whether an ordered
475  * tagged transaction is appropriate to prevent simple tag
476  * starvation.  Since we'd like to ensure that there is at least
477  * 1/2 of the timeout length left for a starved transaction to
478  * complete after we've sent an ordered tag, we must poll at least
479  * four times in every timeout period.  This takes care of the worst
480  * case where a starved transaction starts during an interval that
481  * meets the requirement "don't send an ordered tag" test so it takes
482  * us two intervals to determine that a tag must be sent.
483  */
484 #ifndef DA_ORDEREDTAG_INTERVAL
485 #define DA_ORDEREDTAG_INTERVAL 4
486 #endif
487
488 static struct periph_driver dadriver =
489 {
490         dainit, "da",
491         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
492 };
493
494 DATA_SET(periphdriver_set, dadriver);
495
496 /* For 2.2-stable support */
497 #ifndef D_DISK
498 #define D_DISK 0
499 #endif
500
501 static struct dev_ops da_ops = {
502         { "da", DA_CDEV_MAJOR, D_DISK },
503         .d_open =       daopen,
504         .d_close =      daclose,
505         .d_read =       physread,
506         .d_write =      physwrite,
507         .d_ioctl =      daioctl,
508         .d_strategy =   dastrategy,
509         .d_dump =       dadump
510 };
511
512 static SLIST_HEAD(,da_softc) softc_list;
513 static struct extend_array *daperiphs;
514
515 static int
516 daopen(struct dev_open_args *ap)
517 {
518         cdev_t dev = ap->a_head.a_dev;
519         struct cam_periph *periph;
520         struct da_softc *softc;
521         struct disklabel *label;        
522         int unit;
523         int part;
524         int error;
525
526         unit = dkunit(dev);
527         part = dkpart(dev);
528         periph = cam_extend_get(daperiphs, unit);
529         if (periph == NULL)
530                 return (ENXIO); 
531
532         softc = (struct da_softc *)periph->softc;
533
534         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
535             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
536              unit, part));
537
538         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
539                 return (error); /* error code from tsleep */
540         }
541
542         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
543                 return(ENXIO);
544         softc->flags |= DA_FLAG_OPEN;
545
546         crit_enter();
547         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
548                 /* Invalidate our pack information. */
549                 disk_invalidate(&softc->disk);
550                 softc->flags &= ~DA_FLAG_PACK_INVALID;
551         }
552         crit_exit();
553
554         /* Do a read capacity */
555         {
556                 struct scsi_read_capacity_data *rcap;
557                 union  ccb *ccb;
558
559                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
560                 
561                 ccb = cam_periph_getccb(periph, /*priority*/1);
562                 scsi_read_capacity(&ccb->csio,
563                                    /*retries*/1,
564                                    /*cbfncp*/dadone,
565                                    MSG_SIMPLE_Q_TAG,
566                                    rcap,
567                                    SSD_FULL_SIZE,
568                                    /*timeout*/60000);
569                 ccb->ccb_h.ccb_bio = NULL;
570
571                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
572                                           /*sense_flags*/SF_RETRY_UA |
573                                                          SF_RETRY_SELTO,
574                                           &softc->device_stats);
575
576                 xpt_release_ccb(ccb);
577
578                 if (error == 0) {
579                         dasetgeom(periph, rcap);
580                 }
581
582                 kfree(rcap, M_TEMP);
583         }
584
585         if (error == 0) {
586                 struct ccb_getdev cgd;
587
588                 /* Build label for whole disk. */
589                 label = &softc->disk.d_label;
590                 bzero(label, sizeof(*label));
591                 label->d_type = DTYPE_SCSI;
592
593                 /*
594                  * Grab the inquiry data to get the vendor and product names.
595                  * Put them in the typename and packname for the label.
596                  */
597                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
598                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
599                 xpt_action((union ccb *)&cgd);
600
601                 strncpy(label->d_typename, cgd.inq_data.vendor,
602                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
603                 strncpy(label->d_packname, cgd.inq_data.product,
604                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
605                 
606                 label->d_secsize = softc->params.secsize;
607                 label->d_nsectors = softc->params.secs_per_track;
608                 label->d_ntracks = softc->params.heads;
609                 label->d_ncylinders = softc->params.cylinders;
610                 label->d_secpercyl = softc->params.heads
611                                   * softc->params.secs_per_track;
612                 label->d_secperunit = softc->params.sectors;
613
614                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
615                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
616                         daprevent(periph, PR_PREVENT);
617         
618                 /*
619                  * Check to see whether or not the blocksize is set yet.
620                  * If it isn't, set it and then clear the blocksize
621                  * unavailable flag for the device statistics.
622                  */
623                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
624                         softc->device_stats.block_size = softc->params.secsize;
625                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
626                 }
627         }
628         
629         if (error != 0) {
630                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
631                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
632                         daprevent(periph, PR_ALLOW);
633                 softc->flags &= ~DA_FLAG_OPEN;
634                 cam_periph_release(periph);
635         }
636         cam_periph_unlock(periph);
637         return (error);
638 }
639
640 static int
641 daclose(struct dev_close_args *ap)
642 {
643         cdev_t dev = ap->a_head.a_dev;
644         struct  cam_periph *periph;
645         struct  da_softc *softc;
646         int     unit;
647         int     error;
648
649         unit = dkunit(dev);
650         periph = cam_extend_get(daperiphs, unit);
651         if (periph == NULL)
652                 return (ENXIO); 
653
654         softc = (struct da_softc *)periph->softc;
655
656         if ((error = cam_periph_lock(periph, 0)) != 0) {
657                 return (error); /* error code from tsleep */
658         }
659
660         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
661                 union   ccb *ccb;
662
663                 ccb = cam_periph_getccb(periph, /*priority*/1);
664
665                 scsi_synchronize_cache(&ccb->csio,
666                                        /*retries*/1,
667                                        /*cbfcnp*/dadone,
668                                        MSG_SIMPLE_Q_TAG,
669                                        /*begin_lba*/0,/* Cover the whole disk */
670                                        /*lb_count*/0,
671                                        SSD_FULL_SIZE,
672                                        5 * 60 * 1000);
673
674                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
675                                   /*sense_flags*/SF_RETRY_UA,
676                                   &softc->device_stats);
677
678                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
679                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
680                              CAM_SCSI_STATUS_ERROR) {
681                                 int asc, ascq;
682                                 int sense_key, error_code;
683
684                                 scsi_extract_sense(&ccb->csio.sense_data,
685                                                    &error_code,
686                                                    &sense_key, 
687                                                    &asc, &ascq);
688                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
689                                         scsi_sense_print(&ccb->csio);
690                         } else {
691                                 xpt_print_path(periph->path);
692                                 kprintf("Synchronize cache failed, status "
693                                        "== 0x%x, scsi status == 0x%x\n",
694                                        ccb->csio.ccb_h.status,
695                                        ccb->csio.scsi_status);
696                         }
697                 }
698
699                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
700                         cam_release_devq(ccb->ccb_h.path,
701                                          /*relsim_flags*/0,
702                                          /*reduction*/0,
703                                          /*timeout*/0,
704                                          /*getcount_only*/0);
705
706                 xpt_release_ccb(ccb);
707
708         }
709
710         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
711                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
712                         daprevent(periph, PR_ALLOW);
713                 /*
714                  * If we've got removeable media, mark the blocksize as
715                  * unavailable, since it could change when new media is
716                  * inserted.
717                  */
718                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
719         }
720
721         softc->flags &= ~DA_FLAG_OPEN;
722         cam_periph_unlock(periph);
723         cam_periph_release(periph);
724         return (0);     
725 }
726
727 /*
728  * Actually translate the requested transfer into one the physical driver
729  * can understand.  The transfer is described by a buf and will include
730  * only one physical transfer.
731  */
732 static int
733 dastrategy(struct dev_strategy_args *ap)
734 {
735         cdev_t dev = ap->a_head.a_dev;
736         struct bio *bio = ap->a_bio;
737         struct buf *bp = bio->bio_buf;
738         struct cam_periph *periph;
739         struct da_softc *softc;
740         u_int  unit;
741         u_int  part;
742         
743         unit = dkunit(dev);
744         part = dkpart(dev);
745         periph = cam_extend_get(daperiphs, unit);
746         if (periph == NULL) {
747                 bp->b_error = ENXIO;
748                 goto bad;               
749         }
750         softc = (struct da_softc *)periph->softc;
751 #if 0
752         /*
753          * check it's not too big a transfer for our adapter
754          */
755         scsi_minphys(bp, &sd_switch);
756 #endif
757
758         /*
759          * Mask interrupts so that the pack cannot be invalidated until
760          * after we are in the queue.  Otherwise, we might not properly
761          * clean up one of the buffers.
762          */
763         crit_enter();
764         
765         /*
766          * If the device has been made invalid, error out
767          */
768         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
769                 crit_exit();
770                 bp->b_error = ENXIO;
771                 goto bad;
772         }
773         
774         /*
775          * Place it in the queue of disk activities for this disk
776          */
777         bioqdisksort(&softc->bio_queue, bio);
778
779         crit_exit();
780         
781         /*
782          * Schedule ourselves for performing the work.
783          */
784         xpt_schedule(periph, /* XXX priority */1);
785
786         return(0);
787 bad:
788         bp->b_flags |= B_ERROR;
789
790         /*
791          * Correctly set the buf to indicate a completed xfer
792          */
793         bp->b_resid = bp->b_bcount;
794         biodone(bio);
795         return(0);
796 }
797
798 /* For 2.2-stable support */
799 #ifndef ENOIOCTL
800 #define ENOIOCTL -1
801 #endif
802
803 static int
804 daioctl(struct dev_ioctl_args *ap)
805 {
806         cdev_t dev = ap->a_head.a_dev;
807         struct cam_periph *periph;
808         struct da_softc *softc;
809         int unit;
810         int error;
811
812         unit = dkunit(dev);
813         periph = cam_extend_get(daperiphs, unit);
814         if (periph == NULL)
815                 return (ENXIO); 
816
817         softc = (struct da_softc *)periph->softc;
818
819         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
820
821         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
822                 return (error); /* error code from tsleep */
823         }       
824
825         error = cam_periph_ioctl(periph, ap->a_cmd, ap->a_data, daerror);
826
827         cam_periph_unlock(periph);
828         
829         return (error);
830 }
831
832 static int
833 dadump(struct dev_dump_args *ap)
834 {
835         cdev_t dev = ap->a_head.a_dev;
836         struct      cam_periph *periph;
837         struct      da_softc *softc;
838         u_int       unit;
839         long        blkcnt;
840         vm_paddr_t  addr;       
841         struct      ccb_scsiio csio;
842         int         dumppages = MAXDUMPPGS;
843         int         i;
844
845         /* toss any characters present prior to dump */
846         while (cncheckc() != -1)
847                 ;
848
849         unit = dkunit(dev);
850         periph = cam_extend_get(daperiphs, unit);
851         if (periph == NULL) {
852                 return (ENXIO);
853         }
854         softc = (struct da_softc *)periph->softc;
855         
856         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
857                 return (ENXIO);
858
859         addr = 0;       /* starting address */
860         blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
861
862         while (ap->a_count > 0) {
863                 caddr_t va = NULL;
864
865                 if ((ap->a_count / blkcnt) < dumppages)
866                         dumppages = ap->a_count / blkcnt;
867
868                 for (i = 0; i < dumppages; ++i) {
869                         vm_paddr_t a = addr + (i * PAGE_SIZE);
870                         if (is_physical_memory(a))
871                                 va = pmap_kenter_temporary(trunc_page(a), i);
872                         else
873                                 va = pmap_kenter_temporary(trunc_page(0), i);
874                 }
875
876                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
877                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
878                 scsi_read_write(&csio,
879                                 /*retries*/1,
880                                 dadone,
881                                 MSG_ORDERED_Q_TAG,
882                                 /*read*/FALSE,
883                                 /*byte2*/0,
884                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
885                                 ap->a_blkno,
886                                 blkcnt * dumppages,
887                                 /*data_ptr*/(u_int8_t *) va,
888                                 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
889                                 /*sense_len*/SSD_FULL_SIZE,
890                                 DA_DEFAULT_TIMEOUT * 1000);             
891                 xpt_polled_action((union ccb *)&csio);
892
893                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
894                         kprintf("Aborting dump due to I/O error.\n");
895                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
896                              CAM_SCSI_STATUS_ERROR)
897                                 scsi_sense_print(&csio);
898                         else
899                                 kprintf("status == 0x%x, scsi status == 0x%x\n",
900                                        csio.ccb_h.status, csio.scsi_status);
901                         return(EIO);
902                 }
903                 
904                 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
905                         return (EINTR);
906
907                 /* update block count */
908                 ap->a_count -= blkcnt * dumppages;
909                 ap->a_blkno += blkcnt * dumppages;
910                 addr += PAGE_SIZE * dumppages;
911         }
912
913         /*
914          * Sync the disk cache contents to the physical media.
915          */
916         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
917
918                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
919                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
920                 scsi_synchronize_cache(&csio,
921                                        /*retries*/1,
922                                        /*cbfcnp*/dadone,
923                                        MSG_SIMPLE_Q_TAG,
924                                        /*begin_lba*/0,/* Cover the whole disk */
925                                        /*lb_count*/0,
926                                        SSD_FULL_SIZE,
927                                        5 * 60 * 1000);
928                 xpt_polled_action((union ccb *)&csio);
929
930                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
931                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
932                              CAM_SCSI_STATUS_ERROR) {
933                                 int asc, ascq;
934                                 int sense_key, error_code;
935
936                                 scsi_extract_sense(&csio.sense_data,
937                                                    &error_code,
938                                                    &sense_key, 
939                                                    &asc, &ascq);
940                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
941                                         scsi_sense_print(&csio);
942                         } else {
943                                 xpt_print_path(periph->path);
944                                 kprintf("Synchronize cache failed, status "
945                                        "== 0x%x, scsi status == 0x%x\n",
946                                        csio.ccb_h.status, csio.scsi_status);
947                         }
948                 }
949         }
950         return (0);
951 }
952
953 static void
954 dainit(void)
955 {
956         cam_status status;
957         struct cam_path *path;
958
959         /*
960          * Create our extend array for storing the devices we attach to.
961          */
962         daperiphs = cam_extend_new();
963         SLIST_INIT(&softc_list);
964         if (daperiphs == NULL) {
965                 kprintf("da: Failed to alloc extend array!\n");
966                 return;
967         }
968
969         callout_init(&dasendorderedtag_ch);
970
971         /*
972          * Install a global async callback.  This callback will
973          * receive async callbacks like "new device found".
974          */
975         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
976                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
977
978         if (status == CAM_REQ_CMP) {
979                 struct ccb_setasync csa;
980
981                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
982                 csa.ccb_h.func_code = XPT_SASYNC_CB;
983                 csa.event_enable = AC_FOUND_DEVICE;
984                 csa.callback = daasync;
985                 csa.callback_arg = NULL;
986                 xpt_action((union ccb *)&csa);
987                 status = csa.ccb_h.status;
988                 xpt_free_path(path);
989         }
990
991         if (status != CAM_REQ_CMP) {
992                 kprintf("da: Failed to attach master async callback "
993                        "due to status 0x%x!\n", status);
994         } else {
995
996                 /*
997                  * Schedule a periodic event to occasionally send an
998                  * ordered tag to a device.
999                  */
1000                 callout_reset(&dasendorderedtag_ch,
1001                     (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1002                     dasendorderedtag, NULL);
1003
1004                 /* Register our shutdown event handler */
1005                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown, 
1006                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1007                     kprintf("dainit: shutdown event registration failed!\n");
1008         }
1009 }
1010
1011 static void
1012 daoninvalidate(struct cam_periph *periph)
1013 {
1014         struct da_softc *softc;
1015         struct bio *q_bio;
1016         struct buf *q_bp;
1017         struct ccb_setasync csa;
1018
1019         softc = (struct da_softc *)periph->softc;
1020
1021         /*
1022          * De-register any async callbacks.
1023          */
1024         xpt_setup_ccb(&csa.ccb_h, periph->path,
1025                       /* priority */ 5);
1026         csa.ccb_h.func_code = XPT_SASYNC_CB;
1027         csa.event_enable = 0;
1028         csa.callback = daasync;
1029         csa.callback_arg = periph;
1030         xpt_action((union ccb *)&csa);
1031
1032         softc->flags |= DA_FLAG_PACK_INVALID;
1033
1034         /*
1035          * Use a critical section to keep the buffer queue from being
1036          * modified while we traverse it.
1037          */
1038         crit_enter();
1039
1040         /*
1041          * Return all queued I/O with ENXIO.
1042          * XXX Handle any transactions queued to the card
1043          *     with XPT_ABORT_CCB.
1044          */
1045         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1046                 bioq_remove(&softc->bio_queue, q_bio);
1047                 q_bp = q_bio->bio_buf;
1048                 q_bp->b_resid = q_bp->b_bcount;
1049                 q_bp->b_error = ENXIO;
1050                 q_bp->b_flags |= B_ERROR;
1051                 biodone(q_bio);
1052         }
1053         crit_exit();
1054
1055         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1056
1057         xpt_print_path(periph->path);
1058         kprintf("lost device\n");
1059 }
1060
1061 static void
1062 dacleanup(struct cam_periph *periph)
1063 {
1064         struct da_softc *softc;
1065
1066         softc = (struct da_softc *)periph->softc;
1067
1068         devstat_remove_entry(&softc->device_stats);
1069         cam_extend_release(daperiphs, periph->unit_number);
1070         xpt_print_path(periph->path);
1071         kprintf("removing device entry\n");
1072         /*
1073          * If we can't free the sysctl tree, oh well...
1074          */
1075         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1076             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1077                 xpt_print_path(periph->path);
1078                 kprintf("can't remove sysctl context\n");
1079         }
1080         if (softc->disk.d_rawdev) {
1081                 disk_destroy(&softc->disk);
1082         }
1083         kfree(softc, M_DEVBUF);
1084 }
1085
1086 static void
1087 daasync(void *callback_arg, u_int32_t code,
1088         struct cam_path *path, void *arg)
1089 {
1090         struct cam_periph *periph;
1091
1092         periph = (struct cam_periph *)callback_arg;
1093         switch (code) {
1094         case AC_FOUND_DEVICE:
1095         {
1096                 struct ccb_getdev *cgd;
1097                 cam_status status;
1098  
1099                 cgd = (struct ccb_getdev *)arg;
1100
1101                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1102                     && SID_TYPE(&cgd->inq_data) != T_RBC
1103                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1104                         break;
1105
1106                 /*
1107                  * Allocate a peripheral instance for
1108                  * this device and start the probe
1109                  * process.
1110                  */
1111                 status = cam_periph_alloc(daregister, daoninvalidate,
1112                                           dacleanup, dastart,
1113                                           "da", CAM_PERIPH_BIO,
1114                                           cgd->ccb_h.path, daasync,
1115                                           AC_FOUND_DEVICE, cgd);
1116
1117                 if (status != CAM_REQ_CMP
1118                  && status != CAM_REQ_INPROG)
1119                         kprintf("daasync: Unable to attach to new device "
1120                                 "due to status 0x%x\n", status);
1121                 break;
1122         }
1123         case AC_SENT_BDR:
1124         case AC_BUS_RESET:
1125         {
1126                 struct da_softc *softc;
1127                 struct ccb_hdr *ccbh;
1128
1129                 softc = (struct da_softc *)periph->softc;
1130                 crit_enter();
1131                 /*
1132                  * Don't fail on the expected unit attention
1133                  * that will occur.
1134                  */
1135                 softc->flags |= DA_FLAG_RETRY_UA;
1136                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
1137                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
1138                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1139                 crit_exit();
1140                 /* FALLTHROUGH*/
1141         }
1142         default:
1143                 cam_periph_async(periph, code, path, arg);
1144                 break;
1145         }
1146 }
1147
1148 static void
1149 dasysctlinit(void *context, int pending)
1150 {
1151         struct cam_periph *periph;
1152         struct da_softc *softc;
1153         char tmpstr[80], tmpstr2[80];
1154
1155         periph = (struct cam_periph *)context;
1156         softc = (struct da_softc *)periph->softc;
1157
1158         ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1159         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1160
1161         sysctl_ctx_init(&softc->sysctl_ctx);
1162         softc->flags |= DA_FLAG_SCTX_INIT;
1163         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1164                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1165                 CTLFLAG_RD, 0, tmpstr);
1166         if (softc->sysctl_tree == NULL) {
1167                 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1168                 return;
1169         }
1170
1171         /*
1172          * Now register the sysctl handler, so the user can the value on
1173          * the fly.
1174          */
1175         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1176                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1177                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1178                 "Minimum CDB size");
1179 }
1180
1181 static int
1182 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1183 {
1184         int error, value;
1185
1186         value = *(int *)arg1;
1187
1188         error = sysctl_handle_int(oidp, &value, 0, req);
1189
1190         if ((error != 0)
1191          || (req->newptr == NULL))
1192                 return (error);
1193
1194         /*
1195          * Acceptable values here are 6, 10 or 12.  It's possible we may
1196          * support a 16 byte minimum command size in the future, since
1197          * there are now READ(16) and WRITE(16) commands defined in the
1198          * SBC-2 spec.
1199          */
1200         if (value < 6)
1201                 value = 6;
1202         else if ((value > 6)
1203               && (value <= 10))
1204                 value = 10;
1205         else if (value > 10)
1206                 value = 12;
1207
1208         *(int *)arg1 = value;
1209
1210         return (0);
1211 }
1212
1213 static cam_status
1214 daregister(struct cam_periph *periph, void *arg)
1215 {
1216         struct da_softc *softc;
1217         struct ccb_setasync csa;
1218         struct ccb_pathinq cpi;
1219         struct ccb_getdev *cgd;
1220         char tmpstr[80];
1221         caddr_t match;
1222
1223         cgd = (struct ccb_getdev *)arg;
1224         if (periph == NULL) {
1225                 kprintf("daregister: periph was NULL!!\n");
1226                 return(CAM_REQ_CMP_ERR);
1227         }
1228
1229         if (cgd == NULL) {
1230                 kprintf("daregister: no getdev CCB, can't register device\n");
1231                 return(CAM_REQ_CMP_ERR);
1232         }
1233
1234         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1235         LIST_INIT(&softc->pending_ccbs);
1236         softc->state = DA_STATE_PROBE;
1237         bioq_init(&softc->bio_queue);
1238         if (SID_IS_REMOVABLE(&cgd->inq_data))
1239                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1240         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1241                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1242
1243         periph->softc = softc;
1244         
1245         cam_extend_set(daperiphs, periph->unit_number, periph);
1246
1247         /*
1248          * See if this device has any quirks.
1249          */
1250         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1251                                (caddr_t)da_quirk_table,
1252                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1253                                sizeof(*da_quirk_table), scsi_inquiry_match);
1254
1255         if (match != NULL)
1256                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1257         else
1258                 softc->quirks = DA_Q_NONE;
1259
1260         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1261
1262         /* Check if the SIM does not want 6 byte commands */
1263         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1264         cpi.ccb_h.func_code = XPT_PATH_INQ;
1265         xpt_action((union ccb *)&cpi);
1266         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1267                 softc->quirks |= DA_Q_NO_6_BYTE;
1268
1269         /*
1270          * RBC devices don't have to support READ(6), only READ(10).
1271          */
1272         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1273                 softc->minimum_cmd_size = 10;
1274         else
1275                 softc->minimum_cmd_size = 6;
1276
1277         /*
1278          * Load the user's default, if any.
1279          */
1280         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1281                  periph->unit_number);
1282         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1283
1284         /*
1285          * 6, 10 and 12 are the currently permissible values.
1286          */
1287         if (softc->minimum_cmd_size < 6)
1288                 softc->minimum_cmd_size = 6;
1289         else if ((softc->minimum_cmd_size > 6)
1290               && (softc->minimum_cmd_size <= 10))
1291                 softc->minimum_cmd_size = 10;
1292         else if (softc->minimum_cmd_size > 12)
1293                 softc->minimum_cmd_size = 12;
1294
1295         /*
1296          * Block our timeout handler while we
1297          * add this softc to the dev list.
1298          */
1299         crit_enter();
1300         SLIST_INSERT_HEAD(&softc_list, softc, links);
1301         crit_exit();
1302
1303         /*
1304          * The DA driver supports a blocksize, but
1305          * we don't know the blocksize until we do 
1306          * a read capacity.  So, set a flag to
1307          * indicate that the blocksize is 
1308          * unavailable right now.  We'll clear the
1309          * flag as soon as we've done a read capacity.
1310          */
1311         devstat_add_entry(&softc->device_stats, "da", 
1312                           periph->unit_number, 0,
1313                           DEVSTAT_BS_UNAVAILABLE,
1314                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1315                           DEVSTAT_PRIORITY_DISK);
1316
1317         /*
1318          * Register this media as a disk
1319          */
1320         disk_create(periph->unit_number, &softc->disk, 0, &da_ops);
1321
1322         /*
1323          * Add async callbacks for bus reset and
1324          * bus device reset calls.  I don't bother
1325          * checking if this fails as, in most cases,
1326          * the system will function just fine without
1327          * them and the only alternative would be to
1328          * not attach the device on failure.
1329          */
1330         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1331         csa.ccb_h.func_code = XPT_SASYNC_CB;
1332         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1333         csa.callback = daasync;
1334         csa.callback_arg = periph;
1335         xpt_action((union ccb *)&csa);
1336         /*
1337          * Lock this peripheral until we are setup.
1338          * This first call can't block
1339          */
1340         cam_periph_lock(periph, 0);
1341         xpt_schedule(periph, /*priority*/5);
1342
1343         return(CAM_REQ_CMP);
1344 }
1345
1346 static void
1347 dastart(struct cam_periph *periph, union ccb *start_ccb)
1348 {
1349         struct da_softc *softc;
1350
1351         softc = (struct da_softc *)periph->softc;
1352
1353         
1354         switch (softc->state) {
1355         case DA_STATE_NORMAL:
1356         {
1357                 /* Pull a buffer from the queue and get going on it */          
1358                 struct bio *bio;
1359                 struct buf *bp;
1360
1361                 /*
1362                  * See if there is a buf with work for us to do..
1363                  */
1364                 crit_enter();
1365                 bio = bioq_first(&softc->bio_queue);
1366                 if (periph->immediate_priority <= periph->pinfo.priority) {
1367                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1368                                         ("queuing for immediate ccb\n"));
1369                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1370                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1371                                           periph_links.sle);
1372                         periph->immediate_priority = CAM_PRIORITY_NONE;
1373                         crit_exit();
1374                         wakeup(&periph->ccb_list);
1375                 } else if (bio == NULL) {
1376                         crit_exit();
1377                         xpt_release_ccb(start_ccb);
1378                 } else {
1379                         u_int8_t tag_code;
1380
1381                         bioq_remove(&softc->bio_queue, bio);
1382                         bp = bio->bio_buf;
1383
1384                         devstat_start_transaction(&softc->device_stats);
1385
1386                         if ((bp->b_flags & B_ORDERED) != 0
1387                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1388                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1389                                 softc->ordered_tag_count++;
1390                                 tag_code = MSG_ORDERED_Q_TAG;
1391                         } else {
1392                                 tag_code = MSG_SIMPLE_Q_TAG;
1393                         }
1394
1395                         KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1396
1397                         scsi_read_write(&start_ccb->csio,
1398                                         /*retries*/da_retry_count,
1399                                         dadone,
1400                                         tag_code,
1401                                         (bp->b_cmd == BUF_CMD_READ),
1402                                         /*byte2*/0,
1403                                         softc->minimum_cmd_size,
1404                                         bio->bio_offset / softc->params.secsize,
1405                                         bp->b_bcount / softc->params.secsize,
1406                                         bp->b_data,
1407                                         bp->b_bcount,
1408                                         /*sense_len*/SSD_FULL_SIZE,
1409                                         da_default_timeout * 1000);
1410                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1411
1412                         /*
1413                          * Block out any asyncronous callbacks
1414                          * while we touch the pending ccb list.
1415                          */
1416                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1417                                          &start_ccb->ccb_h, periph_links.le);
1418
1419                         /* We expect a unit attention from this device */
1420                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1421                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1422                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1423                         }
1424
1425                         start_ccb->ccb_h.ccb_bio = bio;
1426                         bio = bioq_first(&softc->bio_queue);
1427                         crit_exit();
1428
1429                         xpt_action(start_ccb);
1430                 }
1431                 
1432                 if (bio != NULL) {
1433                         /* Have more work to do, so ensure we stay scheduled */
1434                         xpt_schedule(periph, /* XXX priority */1);
1435                 }
1436                 break;
1437         }
1438         case DA_STATE_PROBE:
1439         {
1440                 struct ccb_scsiio *csio;
1441                 struct scsi_read_capacity_data *rcap;
1442
1443                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
1444                 csio = &start_ccb->csio;
1445                 scsi_read_capacity(csio,
1446                                    /*retries*/4,
1447                                    dadone,
1448                                    MSG_SIMPLE_Q_TAG,
1449                                    rcap,
1450                                    SSD_FULL_SIZE,
1451                                    /*timeout*/5000);
1452                 start_ccb->ccb_h.ccb_bio = NULL;
1453                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1454                 xpt_action(start_ccb);
1455                 break;
1456         }
1457         }
1458 }
1459
1460 static int
1461 cmd6workaround(union ccb *ccb)
1462 {
1463         struct scsi_rw_6 cmd6;
1464         struct scsi_rw_10 *cmd10;
1465         struct da_softc *softc;
1466         u_int8_t *cdb;
1467         int frozen;
1468
1469         cdb = ccb->csio.cdb_io.cdb_bytes;
1470
1471         /* Translation only possible if CDB is an array and cmd is R/W6 */
1472         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1473             (*cdb != READ_6 && *cdb != WRITE_6))
1474                 return 0;
1475
1476         xpt_print_path(ccb->ccb_h.path);
1477         kprintf("READ(6)/WRITE(6) not supported, "
1478                "increasing minimum_cmd_size to 10.\n");
1479         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1480         softc->minimum_cmd_size = 10;
1481
1482         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1483         cmd10 = (struct scsi_rw_10 *)cdb;
1484         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1485         cmd10->byte2 = 0;
1486         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1487         cmd10->reserved = 0;
1488         scsi_ulto2b(cmd6.length, cmd10->length);
1489         cmd10->control = cmd6.control;
1490         ccb->csio.cdb_len = sizeof(*cmd10);
1491
1492         /* Requeue request, unfreezing queue if necessary */
1493         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1494         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1495         xpt_action(ccb);
1496         if (frozen) {
1497                 cam_release_devq(ccb->ccb_h.path,
1498                                  /*relsim_flags*/0,
1499                                  /*reduction*/0,
1500                                  /*timeout*/0,
1501                                  /*getcount_only*/0);
1502         }
1503         return (ERESTART);
1504 }
1505
1506 static void
1507 dadone(struct cam_periph *periph, union ccb *done_ccb)
1508 {
1509         struct da_softc *softc;
1510         struct ccb_scsiio *csio;
1511
1512         softc = (struct da_softc *)periph->softc;
1513         csio = &done_ccb->csio;
1514         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1515         case DA_CCB_BUFFER_IO:
1516         {
1517                 struct buf *bp;
1518                 struct bio *bio;
1519
1520                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1521                 bp = bio->bio_buf;
1522                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1523                         int error;
1524                         int sf;
1525                         
1526                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1527                                 sf = SF_RETRY_UA;
1528                         else
1529                                 sf = 0;
1530
1531                         /* Retry selection timeouts */
1532                         sf |= SF_RETRY_SELTO;
1533
1534                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1535                                 /*
1536                                  * A retry was scheuled, so
1537                                  * just return.
1538                                  */
1539                                 return;
1540                         }
1541                         if (error != 0) {
1542                                 struct bio *q_bio;
1543                                 struct buf *q_bp;
1544
1545                                 crit_enter();
1546
1547                                 if (error == ENXIO) {
1548                                         /*
1549                                          * Catastrophic error.  Mark our pack as
1550                                          * invalid.
1551                                          */
1552                                         /* XXX See if this is really a media
1553                                          *     change first.
1554                                          */
1555                                         xpt_print_path(periph->path);
1556                                         kprintf("Invalidating pack\n");
1557                                         softc->flags |= DA_FLAG_PACK_INVALID;
1558                                 }
1559
1560                                 /*
1561                                  * return all queued I/O with EIO, so that
1562                                  * the client can retry these I/Os in the
1563                                  * proper order should it attempt to recover.
1564                                  */
1565                                 while ((q_bio = bioq_first(&softc->bio_queue))
1566                                         != NULL) {
1567                                         bioq_remove(&softc->bio_queue, q_bio);
1568                                         q_bp = q_bio->bio_buf;
1569                                         q_bp->b_resid = q_bp->b_bcount;
1570                                         q_bp->b_error = EIO;
1571                                         q_bp->b_flags |= B_ERROR;
1572                                         biodone(q_bio);
1573                                 }
1574                                 crit_exit();
1575                                 bp->b_error = error;
1576                                 bp->b_resid = bp->b_bcount;
1577                                 bp->b_flags |= B_ERROR;
1578                         } else {
1579                                 bp->b_resid = csio->resid;
1580                                 bp->b_error = 0;
1581                                 if (bp->b_resid != 0)
1582                                         bp->b_flags |= B_ERROR;
1583                         }
1584                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1585                                 cam_release_devq(done_ccb->ccb_h.path,
1586                                                  /*relsim_flags*/0,
1587                                                  /*reduction*/0,
1588                                                  /*timeout*/0,
1589                                                  /*getcount_only*/0);
1590                 } else {
1591                         bp->b_resid = csio->resid;
1592                         if (csio->resid > 0)
1593                                 bp->b_flags |= B_ERROR;
1594                 }
1595
1596                 /*
1597                  * Block out any asyncronous callbacks
1598                  * while we touch the pending ccb list.
1599                  */
1600                 crit_enter();
1601                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1602                 crit_exit();
1603
1604                 if (softc->device_stats.busy_count == 0)
1605                         softc->flags |= DA_FLAG_WENT_IDLE;
1606
1607                 devstat_end_transaction_buf(&softc->device_stats, bp);
1608                 biodone(bio);
1609                 break;
1610         }
1611         case DA_CCB_PROBE:
1612         {
1613                 struct     scsi_read_capacity_data *rdcap;
1614                 char       announce_buf[80];
1615
1616                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1617                 
1618                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1619                         struct disk_params *dp;
1620
1621                         dasetgeom(periph, rdcap);
1622                         dp = &softc->params;
1623                         ksnprintf(announce_buf, sizeof(announce_buf),
1624                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1625                                 (unsigned long) (((u_int64_t)dp->secsize *
1626                                 dp->sectors) / (1024*1024)), dp->sectors,
1627                                 dp->secsize, dp->heads, dp->secs_per_track,
1628                                 dp->cylinders);
1629                 } else {
1630                         int     error;
1631
1632                         announce_buf[0] = '\0';
1633
1634                         /*
1635                          * Retry any UNIT ATTENTION type errors.  They
1636                          * are expected at boot.
1637                          */
1638                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1639                                         SF_RETRY_SELTO | SF_NO_PRINT);
1640                         if (error == ERESTART) {
1641                                 /*
1642                                  * A retry was scheuled, so
1643                                  * just return.
1644                                  */
1645                                 return;
1646                         } else if (error != 0) {
1647                                 struct scsi_sense_data *sense;
1648                                 int asc, ascq;
1649                                 int sense_key, error_code;
1650                                 int have_sense;
1651                                 cam_status status;
1652                                 struct ccb_getdev cgd;
1653
1654                                 /* Don't wedge this device's queue */
1655                                 cam_release_devq(done_ccb->ccb_h.path,
1656                                                  /*relsim_flags*/0,
1657                                                  /*reduction*/0,
1658                                                  /*timeout*/0,
1659                                                  /*getcount_only*/0);
1660
1661                                 status = done_ccb->ccb_h.status;
1662
1663                                 xpt_setup_ccb(&cgd.ccb_h, 
1664                                               done_ccb->ccb_h.path,
1665                                               /* priority */ 1);
1666                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1667                                 xpt_action((union ccb *)&cgd);
1668
1669                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1670                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1671                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1672                                         have_sense = FALSE;
1673                                 else
1674                                         have_sense = TRUE;
1675
1676                                 if (have_sense) {
1677                                         sense = &csio->sense_data;
1678                                         scsi_extract_sense(sense, &error_code,
1679                                                            &sense_key, 
1680                                                            &asc, &ascq);
1681                                 }
1682                                 /*
1683                                  * Attach to anything that claims to be a
1684                                  * direct access or optical disk device,
1685                                  * as long as it doesn't return a "Logical
1686                                  * unit not supported" (0x25) error.
1687                                  */
1688                                 if ((have_sense) && (asc != 0x25)
1689                                  && (error_code == SSD_CURRENT_ERROR))
1690                                         ksnprintf(announce_buf,
1691                                             sizeof(announce_buf),
1692                                                 "Attempt to query device "
1693                                                 "size failed: %s, %s",
1694                                                 scsi_sense_key_text[sense_key],
1695                                                 scsi_sense_desc(asc,ascq,
1696                                                                 &cgd.inq_data));
1697                                 else { 
1698                                         if (have_sense)
1699                                                 scsi_sense_print(
1700                                                         &done_ccb->csio);
1701                                         else {
1702                                                 xpt_print_path(periph->path);
1703                                                 kprintf("got CAM status %#x\n",
1704                                                        done_ccb->ccb_h.status);
1705                                         }
1706
1707                                         xpt_print_path(periph->path);
1708                                         kprintf("fatal error, failed" 
1709                                                " to attach to device\n");
1710
1711                                         /*
1712                                          * Free up resources.
1713                                          */
1714                                         cam_periph_invalidate(periph);
1715                                 } 
1716                         }
1717                 }
1718                 kfree(rdcap, M_TEMP);
1719                 if (announce_buf[0] != '\0') {
1720                         xpt_announce_periph(periph, announce_buf);
1721                         /*
1722                          * Create our sysctl variables, now that we know
1723                          * we have successfully attached.
1724                          */
1725                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1726                             &softc->sysctl_task);
1727                 }
1728                 softc->state = DA_STATE_NORMAL;         
1729                 /*
1730                  * Since our peripheral may be invalidated by an error
1731                  * above or an external event, we must release our CCB
1732                  * before releasing the probe lock on the peripheral.
1733                  * The peripheral will only go away once the last lock
1734                  * is removed, and we need it around for the CCB release
1735                  * operation.
1736                  */
1737                 xpt_release_ccb(done_ccb);
1738                 cam_periph_unlock(periph);
1739                 return;
1740         }
1741         case DA_CCB_WAITING:
1742         {
1743                 /* Caller will release the CCB */
1744                 wakeup(&done_ccb->ccb_h.cbfcnp);
1745                 return;
1746         }
1747         case DA_CCB_DUMP:
1748                 /* No-op.  We're polling */
1749                 return;
1750         default:
1751                 break;
1752         }
1753         xpt_release_ccb(done_ccb);
1754 }
1755
1756 static int
1757 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1758 {
1759         struct da_softc   *softc;
1760         struct cam_periph *periph;
1761         int error;
1762
1763         periph = xpt_path_periph(ccb->ccb_h.path);
1764         softc = (struct da_softc *)periph->softc;
1765
1766         /*
1767          * Automatically detect devices that do not support
1768          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1769          */
1770         error = 0;
1771         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1772                 error = cmd6workaround(ccb);
1773         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1774                    CAM_SCSI_STATUS_ERROR)
1775          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1776          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1777          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1778          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1779                 int sense_key, error_code, asc, ascq;
1780
1781                 scsi_extract_sense(&ccb->csio.sense_data,
1782                                    &error_code, &sense_key, &asc, &ascq);
1783                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1784                         error = cmd6workaround(ccb);
1785         }
1786         if (error == ERESTART)
1787                 return (ERESTART);
1788
1789         /*
1790          * XXX
1791          * Until we have a better way of doing pack validation,
1792          * don't treat UAs as errors.
1793          */
1794         sense_flags |= SF_RETRY_UA;
1795         return(cam_periph_error(ccb, cam_flags, sense_flags,
1796                                 &softc->saved_ccb));
1797 }
1798
1799 static void
1800 daprevent(struct cam_periph *periph, int action)
1801 {
1802         struct  da_softc *softc;
1803         union   ccb *ccb;               
1804         int     error;
1805                 
1806         softc = (struct da_softc *)periph->softc;
1807
1808         if (((action == PR_ALLOW)
1809           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1810          || ((action == PR_PREVENT)
1811           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1812                 return;
1813         }
1814
1815         ccb = cam_periph_getccb(periph, /*priority*/1);
1816
1817         scsi_prevent(&ccb->csio,
1818                      /*retries*/1,
1819                      /*cbcfp*/dadone,
1820                      MSG_SIMPLE_Q_TAG,
1821                      action,
1822                      SSD_FULL_SIZE,
1823                      5000);
1824
1825         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1826                                   /*sense_flags*/0, &softc->device_stats);
1827
1828         if (error == 0) {
1829                 if (action == PR_ALLOW)
1830                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1831                 else
1832                         softc->flags |= DA_FLAG_PACK_LOCKED;
1833         }
1834
1835         xpt_release_ccb(ccb);
1836 }
1837
1838 static void
1839 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1840 {
1841         struct ccb_calc_geometry ccg;
1842         struct da_softc *softc;
1843         struct disk_params *dp;
1844
1845         softc = (struct da_softc *)periph->softc;
1846
1847         dp = &softc->params;
1848         dp->secsize = scsi_4btoul(rdcap->length);
1849         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1850         /*
1851          * Have the controller provide us with a geometry
1852          * for this disk.  The only time the geometry
1853          * matters is when we boot and the controller
1854          * is the only one knowledgeable enough to come
1855          * up with something that will make this a bootable
1856          * device.
1857          */
1858         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1859         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1860         ccg.block_size = dp->secsize;
1861         ccg.volume_size = dp->sectors;
1862         ccg.heads = 0;
1863         ccg.secs_per_track = 0;
1864         ccg.cylinders = 0;
1865         xpt_action((union ccb*)&ccg);
1866         dp->heads = ccg.heads;
1867         dp->secs_per_track = ccg.secs_per_track;
1868         dp->cylinders = ccg.cylinders;
1869 }
1870
1871 static void
1872 dasendorderedtag(void *arg)
1873 {
1874         struct da_softc *softc;
1875
1876         for (softc = SLIST_FIRST(&softc_list);
1877              softc != NULL;
1878              softc = SLIST_NEXT(softc, links)) {
1879                 crit_enter();
1880                 if ((softc->ordered_tag_count == 0) 
1881                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1882                         softc->flags |= DA_FLAG_NEED_OTAG;
1883                 }
1884                 if (softc->device_stats.busy_count > 0)
1885                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1886
1887                 softc->ordered_tag_count = 0;
1888                 crit_exit();
1889         }
1890         /* Queue us up again */
1891         callout_reset(&dasendorderedtag_ch,
1892             (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL,
1893             dasendorderedtag, NULL);
1894 }
1895
1896 /*
1897  * Step through all DA peripheral drivers, and if the device is still open,
1898  * sync the disk cache to physical media.
1899  */
1900 static void
1901 dashutdown(void * arg, int howto)
1902 {
1903         struct cam_periph *periph;
1904         struct da_softc *softc;
1905
1906         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1907              periph = TAILQ_NEXT(periph, unit_links)) {
1908                 union ccb ccb;
1909                 softc = (struct da_softc *)periph->softc;
1910
1911                 /*
1912                  * We only sync the cache if the drive is still open, and
1913                  * if the drive is capable of it..
1914                  */
1915                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1916                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1917                         continue;
1918
1919                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1920
1921                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1922                 scsi_synchronize_cache(&ccb.csio,
1923                                        /*retries*/1,
1924                                        /*cbfcnp*/dadone,
1925                                        MSG_SIMPLE_Q_TAG,
1926                                        /*begin_lba*/0, /* whole disk */
1927                                        /*lb_count*/0,
1928                                        SSD_FULL_SIZE,
1929                                        5 * 60 * 1000);
1930
1931                 xpt_polled_action(&ccb);
1932
1933                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1934                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1935                              CAM_SCSI_STATUS_ERROR)
1936                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1937                                 int error_code, sense_key, asc, ascq;
1938
1939                                 scsi_extract_sense(&ccb.csio.sense_data,
1940                                                    &error_code, &sense_key,
1941                                                    &asc, &ascq);
1942
1943                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1944                                         scsi_sense_print(&ccb.csio);
1945                         } else {
1946                                 xpt_print_path(periph->path);
1947                                 kprintf("Synchronize cache failed, status "
1948                                        "== 0x%x, scsi status == 0x%x\n",
1949                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1950                         }
1951                 }
1952
1953                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1954                         cam_release_devq(ccb.ccb_h.path,
1955                                          /*relsim_flags*/0,
1956                                          /*reduction*/0,
1957                                          /*timeout*/0,
1958                                          /*getcount_only*/0);
1959
1960         }
1961 }
1962
1963 #else /* !_KERNEL */
1964
1965 /*
1966  * XXX This is only left out of the kernel build to silence warnings.  If,
1967  * for some reason this function is used in the kernel, the ifdefs should
1968  * be moved so it is included both in the kernel and userland.
1969  */
1970 void
1971 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1972                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1973                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1974                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1975                  u_int32_t timeout)
1976 {
1977         struct scsi_format_unit *scsi_cmd;
1978
1979         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1980         scsi_cmd->opcode = FORMAT_UNIT;
1981         scsi_cmd->byte2 = byte2;
1982         scsi_ulto2b(ileave, scsi_cmd->interleave);
1983
1984         cam_fill_csio(csio,
1985                       retries,
1986                       cbfcnp,
1987                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1988                       tag_action,
1989                       data_ptr,
1990                       dxfer_len,
1991                       sense_len,
1992                       sizeof(*scsi_cmd),
1993                       timeout);
1994 }
1995
1996 #endif /* _KERNEL */