Add in support for the iRiver iFP MP3 player.
[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 1.18 2004/09/13 23:57:41 drhodus 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 #include <sys/disk.h>
50 #include <sys/eventhandler.h>
51 #ifdef _KERNEL
52 #include <sys/malloc.h>
53 #include <sys/cons.h>
54 #include <sys/proc.h>
55 #endif
56 #include <sys/buf2.h>
57
58 #include <machine/md_var.h>
59
60 #ifdef _KERNEL
61 #include <vm/vm.h>
62 #include <vm/pmap.h>
63 #endif
64
65 #ifndef _KERNEL
66 #include <stdio.h>
67 #include <string.h>
68 #endif /* _KERNEL */
69
70 #include "../cam.h"
71 #include "../cam_ccb.h"
72 #include "../cam_extend.h"
73 #include "../cam_periph.h"
74 #include "../cam_xpt_periph.h"
75
76 #include "scsi_message.h"
77
78 #ifndef _KERNEL 
79 #include "scsi_da.h"
80 #endif /* !_KERNEL */
81
82 #ifdef _KERNEL
83 typedef enum {
84         DA_STATE_PROBE,
85         DA_STATE_NORMAL
86 } da_state;
87
88 typedef enum {
89         DA_FLAG_PACK_INVALID    = 0x001,
90         DA_FLAG_NEW_PACK        = 0x002,
91         DA_FLAG_PACK_LOCKED     = 0x004,
92         DA_FLAG_PACK_REMOVABLE  = 0x008,
93         DA_FLAG_TAGGED_QUEUING  = 0x010,
94         DA_FLAG_NEED_OTAG       = 0x020,
95         DA_FLAG_WENT_IDLE       = 0x040,
96         DA_FLAG_RETRY_UA        = 0x080,
97         DA_FLAG_OPEN            = 0x100,
98         DA_FLAG_SCTX_INIT       = 0x200
99 } da_flags;
100
101 typedef enum {
102         DA_Q_NONE               = 0x00,
103         DA_Q_NO_SYNC_CACHE      = 0x01,
104         DA_Q_NO_6_BYTE          = 0x02,
105         DA_Q_NO_PREVENT         = 0x04
106 } da_quirks;
107
108 typedef enum {
109         DA_CCB_PROBE            = 0x01,
110         DA_CCB_BUFFER_IO        = 0x02,
111         DA_CCB_WAITING          = 0x03,
112         DA_CCB_DUMP             = 0x04,
113         DA_CCB_TYPE_MASK        = 0x0F,
114         DA_CCB_RETRY_UA         = 0x10
115 } da_ccb_state;
116
117 /* Offsets into our private area for storing information */
118 #define ccb_state       ppriv_field0
119 #define ccb_bp          ppriv_ptr1
120
121 struct disk_params {
122         u_int8_t  heads;
123         u_int16_t cylinders;
124         u_int8_t  secs_per_track;
125         u_int32_t secsize;      /* Number of bytes/sector */
126         u_int32_t sectors;      /* total number sectors */
127 };
128
129 struct da_softc {
130         struct   buf_queue_head buf_queue;
131         struct   devstat device_stats;
132         SLIST_ENTRY(da_softc) links;
133         LIST_HEAD(, ccb_hdr) pending_ccbs;
134         da_state state;
135         da_flags flags; 
136         da_quirks quirks;
137         int      minimum_cmd_size;
138         int      ordered_tag_count;
139         struct   disk_params params;
140         struct   disk disk;
141         union    ccb saved_ccb;
142         struct task             sysctl_task;
143         struct sysctl_ctx_list  sysctl_ctx;
144         struct sysctl_oid       *sysctl_tree;
145 };
146
147 struct da_quirk_entry {
148         struct scsi_inquiry_pattern inq_pat;
149         da_quirks quirks;
150 };
151
152 static const char quantum[] = "QUANTUM";
153 static const char microp[] = "MICROP";
154
155 static struct da_quirk_entry da_quirk_table[] =
156 {
157         /* SPI, FC devices */
158         {
159                 /*
160                  * Fujitsu M2513A MO drives.
161                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
162                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
163                  * Reported by: W.Scholten <whs@xs4all.nl>
164                  */
165                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
166                 /*quirks*/ DA_Q_NO_SYNC_CACHE
167         },
168         {
169                 /* See above. */
170                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
171                 /*quirks*/ DA_Q_NO_SYNC_CACHE
172         },
173         {
174                 /*
175                  * This particular Fujitsu drive doesn't like the
176                  * synchronize cache command.
177                  * Reported by: Tom Jackson <toj@gorilla.net>
178                  */
179                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
180                 /*quirks*/ DA_Q_NO_SYNC_CACHE
181         
182         },
183         {
184                 /*
185                  * This drive doesn't like the synchronize cache command
186                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
187                  * in NetBSD PR kern/6027, August 24, 1998.
188                  */
189                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
190                 /*quirks*/ DA_Q_NO_SYNC_CACHE
191         },
192         {
193                 /*
194                  * This drive doesn't like the synchronize cache command
195                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
196                  * (PR 8882).
197                  */
198                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
199                 /*quirks*/ DA_Q_NO_SYNC_CACHE
200         },
201         {
202                 /*
203                  * Doesn't like the synchronize cache command.
204                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
205                  */
206                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
207                 /*quirks*/ DA_Q_NO_SYNC_CACHE
208         },
209         {
210                 /*
211                  * Doesn't like the synchronize cache command.
212                  */
213                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
214                 /*quirks*/ DA_Q_NO_SYNC_CACHE
215         },
216         {
217                 /*
218                  * Doesn't like the synchronize cache command.
219                  */
220                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
221                 /*quirks*/ DA_Q_NO_SYNC_CACHE
222         },
223         {
224                 /*
225                  * Doesn't work correctly with 6 byte reads/writes.
226                  * Returns illegal request, and points to byte 9 of the
227                  * 6-byte CDB.
228                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
229                  */
230                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
231                 /*quirks*/ DA_Q_NO_6_BYTE
232         },
233         {
234                 /* See above. */
235                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
236                 /*quirks*/ DA_Q_NO_6_BYTE
237         },
238         /* XXX USB floppy quirks temporarily enabled for 4.9R */
239         /* USB floppy devices supported by umass(4) */
240         {
241                 /*
242                  * This USB floppy drive uses the UFI command set. This
243                  * command set is a derivative of the ATAPI command set and
244                  * does not support READ_6 commands only READ_10. It also does
245                  * not support sync cache (0x35).
246                  */
247                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
248                 /*quirks*/ DA_Q_NO_SYNC_CACHE
249         },
250         {
251                 /* Another USB floppy */
252                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MATSHITA", "FDD CF-VFDU*","*"},
253                 /*quirks*/ DA_Q_NO_SYNC_CACHE
254         },
255         {
256                 /*
257                  * The vendor, product and version strings coming from the
258                  * controller are null terminated instead of being padded with
259                  * spaces. The trailing wildcard character '*' is required.
260                  */
261                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SMSC*", "USB FDC*","*"},
262                 /*quirks*/ DA_Q_NO_SYNC_CACHE
263         },
264         {
265                 /*
266                  * SmartDisk (Mitsumi) USB floppy drive
267                  * PR: kern/50226
268                  */
269                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MITSUMI", "USB FDD", "*"},
270                 /*quirks*/ DA_Q_NO_SYNC_CACHE
271         },
272 #ifdef DA_OLD_QUIRKS
273         /* USB mass storage devices supported by umass(4) */
274         {
275                 /*
276                  * Sony Memory Stick adapter MSAC-US1 and
277                  * Sony PCG-C1VJ Internal Memory Stick Slot (MSC-U01).
278                  * Make all sony MS* products use this quirk.
279                  */
280                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "MS*", "*"},
281                 /*quirks*/ DA_Q_NO_SYNC_CACHE
282         },
283         {
284                 /*
285                  * Sony Memory Stick adapter for the CLIE series
286                  * of PalmOS PDA's
287                  */
288                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "CLIE*", "*"},
289                 /*quirks*/ DA_Q_NO_SYNC_CACHE
290         },
291         {
292                 /*
293                  * Intelligent Stick USB disk-on-key
294                  * PR: kern/53005
295                  */
296                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB Card",
297                  "IntelligentStick*", "*"},
298                 /*quirks*/ DA_Q_NO_SYNC_CACHE
299         },
300         {
301                 /*
302                  * Sony DSC cameras (DSC-S30, DSC-S50, DSC-S70)
303                  */
304                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
305                 /*quirks*/ DA_Q_NO_SYNC_CACHE
306         },
307         {
308                 /*
309                  * Microtech USB CameraMate
310                  */
311                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "eUSB    Compact*",
312                  "Compact Flash*", "*"},
313                 /*quirks*/ DA_Q_NO_SYNC_CACHE
314         },
315         {
316                 /*
317                  * Olympus digital cameras (C-3040ZOOM, C-2040ZOOM, C-1)
318                  */
319                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "C-*", "*"},
320                 /*quirks*/ DA_Q_NO_SYNC_CACHE
321         },
322         {
323                 /*
324                  * Olympus digital cameras (E-100RS, E-10).
325                  */
326                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "E-*", "*"},
327                 /*quirks*/ DA_Q_NO_SYNC_CACHE
328         },
329         {
330                 /*
331                  * KingByte Pen Drives
332                  */
333                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NO BRAND", "PEN DRIVE", "*"},
334                 /*quirks*/ DA_Q_NO_SYNC_CACHE
335         },
336         {
337                 /*
338                  * iRiver iFP MP3 player (with UMS Firmware)
339                  * PR: kern/54881, i386/63941, kern/66124
340                  */
341                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
342                 /*quirks*/ DA_Q_NO_SYNC_CACHE
343         },
344         {
345                 /*
346                  * FujiFilm Camera
347                  */
348                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT",
349                  "USB-DRIVEUNIT", "*"},
350                 /*quirks*/ DA_Q_NO_SYNC_CACHE
351         },
352         {
353                 /*
354                  * Minolta Dimage E203
355                  */
356                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"},
357                 /*quirks*/ DA_Q_NO_SYNC_CACHE
358         },
359         {
360                 /*
361                  * Apacer HandyDrive
362                  * PR: kern/43627
363                  */
364                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"},
365                 /*quirks*/ DA_Q_NO_SYNC_CACHE
366         },
367         {
368                 /*
369                  * Daisy Technology PhotoClip on Zoran chip
370                  * PR: kern/43580
371                  */
372                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"},
373                 /*quirks*/ DA_Q_NO_SYNC_CACHE
374         },
375         {
376                 /*
377                  * Sony USB Key-Storage
378                  * PR: kern/46386
379                  */
380                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"},
381                 /*quirks*/ DA_Q_NO_SYNC_CACHE
382         },
383 #endif /* DA_OLD_QUIRKS */
384         {
385                 /*
386                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
387                  * PR: kern/51675
388                  */
389                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
390                 /*quirks*/ DA_Q_NO_SYNC_CACHE
391         },
392         {
393                 /*
394                  * Jungsoft NEXDISK USB flash key
395                  * PR: kern/54737
396                  */
397                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
398                 /*quirks*/ DA_Q_NO_SYNC_CACHE
399         },
400         {
401                 /*
402                  * Creative Nomad MUVO mp3 player (USB)
403                  * PR: kern/53094
404                  */
405                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
406                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
407         },
408 };
409
410 static  d_open_t        daopen;
411 static  d_close_t       daclose;
412 static  d_strategy_t    dastrategy;
413 static  d_ioctl_t       daioctl;
414 static  d_dump_t        dadump;
415 static  periph_init_t   dainit;
416 static  void            daasync(void *callback_arg, u_int32_t code,
417                                 struct cam_path *path, void *arg);
418 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
419 static  periph_ctor_t   daregister;
420 static  periph_dtor_t   dacleanup;
421 static  periph_start_t  dastart;
422 static  periph_oninv_t  daoninvalidate;
423 static  void            dadone(struct cam_periph *periph,
424                                union ccb *done_ccb);
425 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
426                                 u_int32_t sense_flags);
427 static void             daprevent(struct cam_periph *periph, int action);
428 static void             dasetgeom(struct cam_periph *periph,
429                                   struct scsi_read_capacity_data * rdcap);
430 static timeout_t        dasendorderedtag;
431 static void             dashutdown(void *arg, int howto);
432
433 #ifndef DA_DEFAULT_TIMEOUT
434 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
435 #endif
436
437 #ifndef DA_DEFAULT_RETRY
438 #define DA_DEFAULT_RETRY        4
439 #endif
440
441 static int da_retry_count = DA_DEFAULT_RETRY;
442 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
443
444 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
445             "CAM Direct Access Disk driver");
446 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
447            &da_retry_count, 0, "Normal I/O retry count");
448 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
449 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
450            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
451 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
452
453 /*
454  * DA_ORDEREDTAG_INTERVAL determines how often, relative
455  * to the default timeout, we check to see whether an ordered
456  * tagged transaction is appropriate to prevent simple tag
457  * starvation.  Since we'd like to ensure that there is at least
458  * 1/2 of the timeout length left for a starved transaction to
459  * complete after we've sent an ordered tag, we must poll at least
460  * four times in every timeout period.  This takes care of the worst
461  * case where a starved transaction starts during an interval that
462  * meets the requirement "don't send an ordered tag" test so it takes
463  * us two intervals to determine that a tag must be sent.
464  */
465 #ifndef DA_ORDEREDTAG_INTERVAL
466 #define DA_ORDEREDTAG_INTERVAL 4
467 #endif
468
469 static struct periph_driver dadriver =
470 {
471         dainit, "da",
472         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
473 };
474
475 DATA_SET(periphdriver_set, dadriver);
476
477 /* For 2.2-stable support */
478 #ifndef D_DISK
479 #define D_DISK 0
480 #endif
481
482 static struct cdevsw da_cdevsw = {
483         /* name */      "da",
484         /* maj */       DA_CDEV_MAJOR,
485         /* flags */     D_DISK,
486         /* port */      NULL,
487         /* clone */     NULL,
488
489         /* open */      daopen,
490         /* close */     daclose,
491         /* read */      physread,
492         /* write */     physwrite,
493         /* ioctl */     daioctl,
494         /* poll */      nopoll,
495         /* mmap */      nommap,
496         /* strategy */  dastrategy,
497         /* dump */      dadump,
498         /* psize */     nopsize
499 };
500
501 static SLIST_HEAD(,da_softc) softc_list;
502 static struct extend_array *daperiphs;
503
504 static int
505 daopen(dev_t dev, int flags, int fmt, struct thread *td)
506 {
507         struct cam_periph *periph;
508         struct da_softc *softc;
509         struct disklabel *label;        
510         int unit;
511         int part;
512         int error;
513         int s;
514
515         unit = dkunit(dev);
516         part = dkpart(dev);
517         periph = cam_extend_get(daperiphs, unit);
518         if (periph == NULL)
519                 return (ENXIO); 
520
521         softc = (struct da_softc *)periph->softc;
522
523         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
524             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
525              unit, part));
526
527         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
528                 return (error); /* error code from tsleep */
529         }
530
531         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
532                 return(ENXIO);
533         softc->flags |= DA_FLAG_OPEN;
534
535         s = splsoftcam();
536         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
537                 /* Invalidate our pack information. */
538                 disk_invalidate(&softc->disk);
539                 softc->flags &= ~DA_FLAG_PACK_INVALID;
540         }
541         splx(s);
542
543         /* Do a read capacity */
544         {
545                 struct scsi_read_capacity_data *rcap;
546                 union  ccb *ccb;
547
548                 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
549                 
550                 ccb = cam_periph_getccb(periph, /*priority*/1);
551                 scsi_read_capacity(&ccb->csio,
552                                    /*retries*/1,
553                                    /*cbfncp*/dadone,
554                                    MSG_SIMPLE_Q_TAG,
555                                    rcap,
556                                    SSD_FULL_SIZE,
557                                    /*timeout*/60000);
558                 ccb->ccb_h.ccb_bp = NULL;
559
560                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
561                                           /*sense_flags*/SF_RETRY_UA |
562                                                          SF_RETRY_SELTO,
563                                           &softc->device_stats);
564
565                 xpt_release_ccb(ccb);
566
567                 if (error == 0) {
568                         dasetgeom(periph, rcap);
569                 }
570
571                 free(rcap, M_TEMP);
572         }
573
574         if (error == 0) {
575                 struct ccb_getdev cgd;
576
577                 /* Build label for whole disk. */
578                 label = &softc->disk.d_label;
579                 bzero(label, sizeof(*label));
580                 label->d_type = DTYPE_SCSI;
581
582                 /*
583                  * Grab the inquiry data to get the vendor and product names.
584                  * Put them in the typename and packname for the label.
585                  */
586                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
587                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
588                 xpt_action((union ccb *)&cgd);
589
590                 strncpy(label->d_typename, cgd.inq_data.vendor,
591                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
592                 strncpy(label->d_packname, cgd.inq_data.product,
593                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
594                 
595                 label->d_secsize = softc->params.secsize;
596                 label->d_nsectors = softc->params.secs_per_track;
597                 label->d_ntracks = softc->params.heads;
598                 label->d_ncylinders = softc->params.cylinders;
599                 label->d_secpercyl = softc->params.heads
600                                   * softc->params.secs_per_track;
601                 label->d_secperunit = softc->params.sectors;
602
603                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
604                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
605                         daprevent(periph, PR_PREVENT);
606         
607                 /*
608                  * Check to see whether or not the blocksize is set yet.
609                  * If it isn't, set it and then clear the blocksize
610                  * unavailable flag for the device statistics.
611                  */
612                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
613                         softc->device_stats.block_size = softc->params.secsize;
614                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
615                 }
616         }
617         
618         if (error != 0) {
619                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
620                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
621                         daprevent(periph, PR_ALLOW);
622                 softc->flags &= ~DA_FLAG_OPEN;
623                 cam_periph_release(periph);
624         }
625         cam_periph_unlock(periph);
626         return (error);
627 }
628
629 static int
630 daclose(dev_t dev, int flag, int fmt, struct thread *td)
631 {
632         struct  cam_periph *periph;
633         struct  da_softc *softc;
634         int     unit;
635         int     error;
636
637         unit = dkunit(dev);
638         periph = cam_extend_get(daperiphs, unit);
639         if (periph == NULL)
640                 return (ENXIO); 
641
642         softc = (struct da_softc *)periph->softc;
643
644         if ((error = cam_periph_lock(periph, 0)) != 0) {
645                 return (error); /* error code from tsleep */
646         }
647
648         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
649                 union   ccb *ccb;
650
651                 ccb = cam_periph_getccb(periph, /*priority*/1);
652
653                 scsi_synchronize_cache(&ccb->csio,
654                                        /*retries*/1,
655                                        /*cbfcnp*/dadone,
656                                        MSG_SIMPLE_Q_TAG,
657                                        /*begin_lba*/0,/* Cover the whole disk */
658                                        /*lb_count*/0,
659                                        SSD_FULL_SIZE,
660                                        5 * 60 * 1000);
661
662                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
663                                   /*sense_flags*/SF_RETRY_UA,
664                                   &softc->device_stats);
665
666                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
667                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
668                              CAM_SCSI_STATUS_ERROR) {
669                                 int asc, ascq;
670                                 int sense_key, error_code;
671
672                                 scsi_extract_sense(&ccb->csio.sense_data,
673                                                    &error_code,
674                                                    &sense_key, 
675                                                    &asc, &ascq);
676                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
677                                         scsi_sense_print(&ccb->csio);
678                         } else {
679                                 xpt_print_path(periph->path);
680                                 printf("Synchronize cache failed, status "
681                                        "== 0x%x, scsi status == 0x%x\n",
682                                        ccb->csio.ccb_h.status,
683                                        ccb->csio.scsi_status);
684                         }
685                 }
686
687                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
688                         cam_release_devq(ccb->ccb_h.path,
689                                          /*relsim_flags*/0,
690                                          /*reduction*/0,
691                                          /*timeout*/0,
692                                          /*getcount_only*/0);
693
694                 xpt_release_ccb(ccb);
695
696         }
697
698         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
699                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
700                         daprevent(periph, PR_ALLOW);
701                 /*
702                  * If we've got removeable media, mark the blocksize as
703                  * unavailable, since it could change when new media is
704                  * inserted.
705                  */
706                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
707         }
708
709         softc->flags &= ~DA_FLAG_OPEN;
710         cam_periph_unlock(periph);
711         cam_periph_release(periph);
712         return (0);     
713 }
714
715 /*
716  * Actually translate the requested transfer into one the physical driver
717  * can understand.  The transfer is described by a buf and will include
718  * only one physical transfer.
719  */
720 static void
721 dastrategy(struct buf *bp)
722 {
723         struct cam_periph *periph;
724         struct da_softc *softc;
725         u_int  unit;
726         u_int  part;
727         int    s;
728         
729         unit = dkunit(bp->b_dev);
730         part = dkpart(bp->b_dev);
731         periph = cam_extend_get(daperiphs, unit);
732         if (periph == NULL) {
733                 bp->b_error = ENXIO;
734                 goto bad;               
735         }
736         softc = (struct da_softc *)periph->softc;
737 #if 0
738         /*
739          * check it's not too big a transfer for our adapter
740          */
741         scsi_minphys(bp,&sd_switch);
742 #endif
743
744         /*
745          * Mask interrupts so that the pack cannot be invalidated until
746          * after we are in the queue.  Otherwise, we might not properly
747          * clean up one of the buffers.
748          */
749         s = splbio();
750         
751         /*
752          * If the device has been made invalid, error out
753          */
754         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
755                 splx(s);
756                 bp->b_error = ENXIO;
757                 goto bad;
758         }
759         
760         /*
761          * Place it in the queue of disk activities for this disk
762          */
763         bufqdisksort(&softc->buf_queue, bp);
764
765         splx(s);
766         
767         /*
768          * Schedule ourselves for performing the work.
769          */
770         xpt_schedule(periph, /* XXX priority */1);
771
772         return;
773 bad:
774         bp->b_flags |= B_ERROR;
775
776         /*
777          * Correctly set the buf to indicate a completed xfer
778          */
779         bp->b_resid = bp->b_bcount;
780         biodone(bp);
781         return;
782 }
783
784 /* For 2.2-stable support */
785 #ifndef ENOIOCTL
786 #define ENOIOCTL -1
787 #endif
788
789 static int
790 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
791 {
792         struct cam_periph *periph;
793         struct da_softc *softc;
794         int unit;
795         int error;
796
797         unit = dkunit(dev);
798         periph = cam_extend_get(daperiphs, unit);
799         if (periph == NULL)
800                 return (ENXIO); 
801
802         softc = (struct da_softc *)periph->softc;
803
804         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
805
806         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
807                 return (error); /* error code from tsleep */
808         }       
809
810         error = cam_periph_ioctl(periph, cmd, addr, daerror);
811
812         cam_periph_unlock(periph);
813         
814         return (error);
815 }
816
817 static int
818 dadump(dev_t dev, u_int num, u_int blknum, u_int secsize) 
819 {
820         struct      cam_periph *periph;
821         struct      da_softc *softc;
822         u_int       unit;
823         long        blkcnt;
824         vm_paddr_t  addr;       
825         struct      ccb_scsiio csio;
826         int         dumppages = MAXDUMPPGS;
827         int         i;
828
829         /* toss any characters present prior to dump */
830         while (cncheckc() != -1)
831                 ;
832
833         unit = dkunit(dev);
834         periph = cam_extend_get(daperiphs, unit);
835         if (periph == NULL) {
836                 return (ENXIO);
837         }
838         softc = (struct da_softc *)periph->softc;
839         
840         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
841                 return (ENXIO);
842
843         addr = 0;       /* starting address */
844         blkcnt = howmany(PAGE_SIZE, secsize);
845
846         while (num > 0) {
847                 caddr_t va = NULL;
848
849                 if ((num / blkcnt) < dumppages)
850                         dumppages = num / blkcnt;
851
852                 for (i = 0; i < dumppages; ++i) {
853                         vm_paddr_t a = addr + (i * PAGE_SIZE);
854                         if (is_physical_memory(a))
855                                 va = pmap_kenter_temporary(trunc_page(a), i);
856                         else
857                                 va = pmap_kenter_temporary(trunc_page(0), i);
858                 }
859
860                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
861                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
862                 scsi_read_write(&csio,
863                                 /*retries*/1,
864                                 dadone,
865                                 MSG_ORDERED_Q_TAG,
866                                 /*read*/FALSE,
867                                 /*byte2*/0,
868                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
869                                 blknum,
870                                 blkcnt * dumppages,
871                                 /*data_ptr*/(u_int8_t *) va,
872                                 /*dxfer_len*/blkcnt * secsize * dumppages,
873                                 /*sense_len*/SSD_FULL_SIZE,
874                                 DA_DEFAULT_TIMEOUT * 1000);             
875                 xpt_polled_action((union ccb *)&csio);
876
877                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
878                         printf("Aborting dump due to I/O error.\n");
879                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
880                              CAM_SCSI_STATUS_ERROR)
881                                 scsi_sense_print(&csio);
882                         else
883                                 printf("status == 0x%x, scsi status == 0x%x\n",
884                                        csio.ccb_h.status, csio.scsi_status);
885                         return(EIO);
886                 }
887                 
888                 if (dumpstatus(addr, (off_t)num * softc->params.secsize) < 0)
889                         return (EINTR);
890
891                 /* update block count */
892                 num -= blkcnt * dumppages;
893                 blknum += blkcnt * dumppages;
894                 addr += PAGE_SIZE * dumppages;
895         }
896
897         /*
898          * Sync the disk cache contents to the physical media.
899          */
900         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
901
902                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
903                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
904                 scsi_synchronize_cache(&csio,
905                                        /*retries*/1,
906                                        /*cbfcnp*/dadone,
907                                        MSG_SIMPLE_Q_TAG,
908                                        /*begin_lba*/0,/* Cover the whole disk */
909                                        /*lb_count*/0,
910                                        SSD_FULL_SIZE,
911                                        5 * 60 * 1000);
912                 xpt_polled_action((union ccb *)&csio);
913
914                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
915                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
916                              CAM_SCSI_STATUS_ERROR) {
917                                 int asc, ascq;
918                                 int sense_key, error_code;
919
920                                 scsi_extract_sense(&csio.sense_data,
921                                                    &error_code,
922                                                    &sense_key, 
923                                                    &asc, &ascq);
924                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
925                                         scsi_sense_print(&csio);
926                         } else {
927                                 xpt_print_path(periph->path);
928                                 printf("Synchronize cache failed, status "
929                                        "== 0x%x, scsi status == 0x%x\n",
930                                        csio.ccb_h.status, csio.scsi_status);
931                         }
932                 }
933         }
934         return (0);
935 }
936
937 static void
938 dainit(void)
939 {
940         cam_status status;
941         struct cam_path *path;
942
943         /*
944          * Create our extend array for storing the devices we attach to.
945          */
946         daperiphs = cam_extend_new();
947         SLIST_INIT(&softc_list);
948         if (daperiphs == NULL) {
949                 printf("da: Failed to alloc extend array!\n");
950                 return;
951         }
952         
953         /*
954          * Install a global async callback.  This callback will
955          * receive async callbacks like "new device found".
956          */
957         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
958                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
959
960         if (status == CAM_REQ_CMP) {
961                 struct ccb_setasync csa;
962
963                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
964                 csa.ccb_h.func_code = XPT_SASYNC_CB;
965                 csa.event_enable = AC_FOUND_DEVICE;
966                 csa.callback = daasync;
967                 csa.callback_arg = NULL;
968                 xpt_action((union ccb *)&csa);
969                 status = csa.ccb_h.status;
970                 xpt_free_path(path);
971         }
972
973         if (status != CAM_REQ_CMP) {
974                 printf("da: Failed to attach master async callback "
975                        "due to status 0x%x!\n", status);
976         } else {
977
978                 /*
979                  * Schedule a periodic event to occasionally send an
980                  * ordered tag to a device.
981                  */
982                 timeout(dasendorderedtag, NULL,
983                         (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
984
985                 /* Register our shutdown event handler */
986                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown, 
987                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
988                     printf("dainit: shutdown event registration failed!\n");
989         }
990 }
991
992 static void
993 daoninvalidate(struct cam_periph *periph)
994 {
995         int s;
996         struct da_softc *softc;
997         struct buf *q_bp;
998         struct ccb_setasync csa;
999
1000         softc = (struct da_softc *)periph->softc;
1001
1002         /*
1003          * De-register any async callbacks.
1004          */
1005         xpt_setup_ccb(&csa.ccb_h, periph->path,
1006                       /* priority */ 5);
1007         csa.ccb_h.func_code = XPT_SASYNC_CB;
1008         csa.event_enable = 0;
1009         csa.callback = daasync;
1010         csa.callback_arg = periph;
1011         xpt_action((union ccb *)&csa);
1012
1013         softc->flags |= DA_FLAG_PACK_INVALID;
1014
1015         /*
1016          * Although the oninvalidate() routines are always called at
1017          * splsoftcam, we need to be at splbio() here to keep the buffer
1018          * queue from being modified while we traverse it.
1019          */
1020         s = splbio();
1021
1022         /*
1023          * Return all queued I/O with ENXIO.
1024          * XXX Handle any transactions queued to the card
1025          *     with XPT_ABORT_CCB.
1026          */
1027         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1028                 bufq_remove(&softc->buf_queue, q_bp);
1029                 q_bp->b_resid = q_bp->b_bcount;
1030                 q_bp->b_error = ENXIO;
1031                 q_bp->b_flags |= B_ERROR;
1032                 biodone(q_bp);
1033         }
1034         splx(s);
1035
1036         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1037
1038         xpt_print_path(periph->path);
1039         printf("lost device\n");
1040 }
1041
1042 static void
1043 dacleanup(struct cam_periph *periph)
1044 {
1045         struct da_softc *softc;
1046
1047         softc = (struct da_softc *)periph->softc;
1048
1049         devstat_remove_entry(&softc->device_stats);
1050         cam_extend_release(daperiphs, periph->unit_number);
1051         xpt_print_path(periph->path);
1052         printf("removing device entry\n");
1053         /*
1054          * If we can't free the sysctl tree, oh well...
1055          */
1056         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1057             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1058                 xpt_print_path(periph->path);
1059                 printf("can't remove sysctl context\n");
1060         }
1061         if (softc->disk.d_rawdev) {
1062                 disk_destroy(&softc->disk);
1063         }
1064         free(softc, M_DEVBUF);
1065 }
1066
1067 static void
1068 daasync(void *callback_arg, u_int32_t code,
1069         struct cam_path *path, void *arg)
1070 {
1071         struct cam_periph *periph;
1072
1073         periph = (struct cam_periph *)callback_arg;
1074         switch (code) {
1075         case AC_FOUND_DEVICE:
1076         {
1077                 struct ccb_getdev *cgd;
1078                 cam_status status;
1079  
1080                 cgd = (struct ccb_getdev *)arg;
1081
1082                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1083                     && SID_TYPE(&cgd->inq_data) != T_RBC
1084                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1085                         break;
1086
1087                 /*
1088                  * Allocate a peripheral instance for
1089                  * this device and start the probe
1090                  * process.
1091                  */
1092                 status = cam_periph_alloc(daregister, daoninvalidate,
1093                                           dacleanup, dastart,
1094                                           "da", CAM_PERIPH_BIO,
1095                                           cgd->ccb_h.path, daasync,
1096                                           AC_FOUND_DEVICE, cgd);
1097
1098                 if (status != CAM_REQ_CMP
1099                  && status != CAM_REQ_INPROG)
1100                         printf("daasync: Unable to attach to new device "
1101                                 "due to status 0x%x\n", status);
1102                 break;
1103         }
1104         case AC_SENT_BDR:
1105         case AC_BUS_RESET:
1106         {
1107                 struct da_softc *softc;
1108                 struct ccb_hdr *ccbh;
1109                 int s;
1110
1111                 softc = (struct da_softc *)periph->softc;
1112                 s = splsoftcam();
1113                 /*
1114                  * Don't fail on the expected unit attention
1115                  * that will occur.
1116                  */
1117                 softc->flags |= DA_FLAG_RETRY_UA;
1118                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
1119                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
1120                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1121                 splx(s);
1122                 /* FALLTHROUGH*/
1123         }
1124         default:
1125                 cam_periph_async(periph, code, path, arg);
1126                 break;
1127         }
1128 }
1129
1130 static void
1131 dasysctlinit(void *context, int pending)
1132 {
1133         struct cam_periph *periph;
1134         struct da_softc *softc;
1135         char tmpstr[80], tmpstr2[80];
1136
1137         periph = (struct cam_periph *)context;
1138         softc = (struct da_softc *)periph->softc;
1139
1140         snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1141         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1142
1143         sysctl_ctx_init(&softc->sysctl_ctx);
1144         softc->flags |= DA_FLAG_SCTX_INIT;
1145         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1146                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1147                 CTLFLAG_RD, 0, tmpstr);
1148         if (softc->sysctl_tree == NULL) {
1149                 printf("dasysctlinit: unable to allocate sysctl tree\n");
1150                 return;
1151         }
1152
1153         /*
1154          * Now register the sysctl handler, so the user can the value on
1155          * the fly.
1156          */
1157         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1158                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1159                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1160                 "Minimum CDB size");
1161 }
1162
1163 static int
1164 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1165 {
1166         int error, value;
1167
1168         value = *(int *)arg1;
1169
1170         error = sysctl_handle_int(oidp, &value, 0, req);
1171
1172         if ((error != 0)
1173          || (req->newptr == NULL))
1174                 return (error);
1175
1176         /*
1177          * Acceptable values here are 6, 10 or 12.  It's possible we may
1178          * support a 16 byte minimum command size in the future, since
1179          * there are now READ(16) and WRITE(16) commands defined in the
1180          * SBC-2 spec.
1181          */
1182         if (value < 6)
1183                 value = 6;
1184         else if ((value > 6)
1185               && (value <= 10))
1186                 value = 10;
1187         else if (value > 10)
1188                 value = 12;
1189
1190         *(int *)arg1 = value;
1191
1192         return (0);
1193 }
1194
1195 static cam_status
1196 daregister(struct cam_periph *periph, void *arg)
1197 {
1198         int s;
1199         struct da_softc *softc;
1200         struct ccb_setasync csa;
1201         struct ccb_pathinq cpi;
1202         struct ccb_getdev *cgd;
1203         char tmpstr[80];
1204         caddr_t match;
1205
1206         cgd = (struct ccb_getdev *)arg;
1207         if (periph == NULL) {
1208                 printf("daregister: periph was NULL!!\n");
1209                 return(CAM_REQ_CMP_ERR);
1210         }
1211
1212         if (cgd == NULL) {
1213                 printf("daregister: no getdev CCB, can't register device\n");
1214                 return(CAM_REQ_CMP_ERR);
1215         }
1216
1217         softc = malloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1218         LIST_INIT(&softc->pending_ccbs);
1219         softc->state = DA_STATE_PROBE;
1220         bufq_init(&softc->buf_queue);
1221         if (SID_IS_REMOVABLE(&cgd->inq_data))
1222                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1223         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1224                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1225
1226         periph->softc = softc;
1227         
1228         cam_extend_set(daperiphs, periph->unit_number, periph);
1229
1230         /*
1231          * See if this device has any quirks.
1232          */
1233         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1234                                (caddr_t)da_quirk_table,
1235                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1236                                sizeof(*da_quirk_table), scsi_inquiry_match);
1237
1238         if (match != NULL)
1239                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1240         else
1241                 softc->quirks = DA_Q_NONE;
1242
1243         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1244
1245         /* Check if the SIM does not want 6 byte commands */
1246         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1247         cpi.ccb_h.func_code = XPT_PATH_INQ;
1248         xpt_action((union ccb *)&cpi);
1249         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1250                 softc->quirks |= DA_Q_NO_6_BYTE;
1251
1252         /*
1253          * RBC devices don't have to support READ(6), only READ(10).
1254          */
1255         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1256                 softc->minimum_cmd_size = 10;
1257         else
1258                 softc->minimum_cmd_size = 6;
1259
1260         /*
1261          * Load the user's default, if any.
1262          */
1263         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1264                  periph->unit_number);
1265         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1266
1267         /*
1268          * 6, 10 and 12 are the currently permissible values.
1269          */
1270         if (softc->minimum_cmd_size < 6)
1271                 softc->minimum_cmd_size = 6;
1272         else if ((softc->minimum_cmd_size > 6)
1273               && (softc->minimum_cmd_size <= 10))
1274                 softc->minimum_cmd_size = 10;
1275         else if (softc->minimum_cmd_size > 12)
1276                 softc->minimum_cmd_size = 12;
1277
1278         /*
1279          * Block our timeout handler while we
1280          * add this softc to the dev list.
1281          */
1282         s = splsoftclock();
1283         SLIST_INSERT_HEAD(&softc_list, softc, links);
1284         splx(s);
1285
1286         /*
1287          * The DA driver supports a blocksize, but
1288          * we don't know the blocksize until we do 
1289          * a read capacity.  So, set a flag to
1290          * indicate that the blocksize is 
1291          * unavailable right now.  We'll clear the
1292          * flag as soon as we've done a read capacity.
1293          */
1294         devstat_add_entry(&softc->device_stats, "da", 
1295                           periph->unit_number, 0,
1296                           DEVSTAT_BS_UNAVAILABLE,
1297                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1298                           DEVSTAT_PRIORITY_DISK);
1299
1300         /*
1301          * Register this media as a disk
1302          */
1303         disk_create(periph->unit_number, &softc->disk, 0, &da_cdevsw);
1304
1305         /*
1306          * Add async callbacks for bus reset and
1307          * bus device reset calls.  I don't bother
1308          * checking if this fails as, in most cases,
1309          * the system will function just fine without
1310          * them and the only alternative would be to
1311          * not attach the device on failure.
1312          */
1313         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1314         csa.ccb_h.func_code = XPT_SASYNC_CB;
1315         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1316         csa.callback = daasync;
1317         csa.callback_arg = periph;
1318         xpt_action((union ccb *)&csa);
1319         /*
1320          * Lock this peripheral until we are setup.
1321          * This first call can't block
1322          */
1323         (void)cam_periph_lock(periph, 0);
1324         xpt_schedule(periph, /*priority*/5);
1325
1326         return(CAM_REQ_CMP);
1327 }
1328
1329 static void
1330 dastart(struct cam_periph *periph, union ccb *start_ccb)
1331 {
1332         struct da_softc *softc;
1333
1334         softc = (struct da_softc *)periph->softc;
1335
1336         
1337         switch (softc->state) {
1338         case DA_STATE_NORMAL:
1339         {
1340                 /* Pull a buffer from the queue and get going on it */          
1341                 struct buf *bp;
1342                 int s;
1343
1344                 /*
1345                  * See if there is a buf with work for us to do..
1346                  */
1347                 s = splbio();
1348                 bp = bufq_first(&softc->buf_queue);
1349                 if (periph->immediate_priority <= periph->pinfo.priority) {
1350                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1351                                         ("queuing for immediate ccb\n"));
1352                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1353                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1354                                           periph_links.sle);
1355                         periph->immediate_priority = CAM_PRIORITY_NONE;
1356                         splx(s);
1357                         wakeup(&periph->ccb_list);
1358                 } else if (bp == NULL) {
1359                         splx(s);
1360                         xpt_release_ccb(start_ccb);
1361                 } else {
1362                         int oldspl;
1363                         u_int8_t tag_code;
1364
1365                         bufq_remove(&softc->buf_queue, bp);
1366
1367                         devstat_start_transaction(&softc->device_stats);
1368
1369                         if ((bp->b_flags & B_ORDERED) != 0
1370                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1371                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1372                                 softc->ordered_tag_count++;
1373                                 tag_code = MSG_ORDERED_Q_TAG;
1374                         } else {
1375                                 tag_code = MSG_SIMPLE_Q_TAG;
1376                         }
1377                         scsi_read_write(&start_ccb->csio,
1378                                         /*retries*/da_retry_count,
1379                                         dadone,
1380                                         tag_code,
1381                                         bp->b_flags & B_READ,
1382                                         /*byte2*/0,
1383                                         softc->minimum_cmd_size,
1384                                         bp->b_pblkno,
1385                                         bp->b_bcount / softc->params.secsize,
1386                                         bp->b_data,
1387                                         bp->b_bcount,
1388                                         /*sense_len*/SSD_FULL_SIZE,
1389                                         da_default_timeout * 1000);
1390                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1391
1392                         /*
1393                          * Block out any asyncronous callbacks
1394                          * while we touch the pending ccb list.
1395                          */
1396                         oldspl = splcam();
1397                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1398                                          &start_ccb->ccb_h, periph_links.le);
1399                         splx(oldspl);
1400
1401                         /* We expect a unit attention from this device */
1402                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1403                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1404                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1405                         }
1406
1407                         start_ccb->ccb_h.ccb_bp = bp;
1408                         bp = bufq_first(&softc->buf_queue);
1409                         splx(s);
1410
1411                         xpt_action(start_ccb);
1412                 }
1413                 
1414                 if (bp != NULL) {
1415                         /* Have more work to do, so ensure we stay scheduled */
1416                         xpt_schedule(periph, /* XXX priority */1);
1417                 }
1418                 break;
1419         }
1420         case DA_STATE_PROBE:
1421         {
1422                 struct ccb_scsiio *csio;
1423                 struct scsi_read_capacity_data *rcap;
1424
1425                 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
1426                 csio = &start_ccb->csio;
1427                 scsi_read_capacity(csio,
1428                                    /*retries*/4,
1429                                    dadone,
1430                                    MSG_SIMPLE_Q_TAG,
1431                                    rcap,
1432                                    SSD_FULL_SIZE,
1433                                    /*timeout*/5000);
1434                 start_ccb->ccb_h.ccb_bp = NULL;
1435                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1436                 xpt_action(start_ccb);
1437                 break;
1438         }
1439         }
1440 }
1441
1442 static int
1443 cmd6workaround(union ccb *ccb)
1444 {
1445         struct scsi_rw_6 cmd6;
1446         struct scsi_rw_10 *cmd10;
1447         struct da_softc *softc;
1448         u_int8_t *cdb;
1449         int frozen;
1450
1451         cdb = ccb->csio.cdb_io.cdb_bytes;
1452
1453         /* Translation only possible if CDB is an array and cmd is R/W6 */
1454         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1455             (*cdb != READ_6 && *cdb != WRITE_6))
1456                 return 0;
1457
1458         xpt_print_path(ccb->ccb_h.path);
1459         printf("READ(6)/WRITE(6) not supported, "
1460                "increasing minimum_cmd_size to 10.\n");
1461         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1462         softc->minimum_cmd_size = 10;
1463
1464         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1465         cmd10 = (struct scsi_rw_10 *)cdb;
1466         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1467         cmd10->byte2 = 0;
1468         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1469         cmd10->reserved = 0;
1470         scsi_ulto2b(cmd6.length, cmd10->length);
1471         cmd10->control = cmd6.control;
1472         ccb->csio.cdb_len = sizeof(*cmd10);
1473
1474         /* Requeue request, unfreezing queue if necessary */
1475         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1476         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1477         xpt_action(ccb);
1478         if (frozen) {
1479                 cam_release_devq(ccb->ccb_h.path,
1480                                  /*relsim_flags*/0,
1481                                  /*reduction*/0,
1482                                  /*timeout*/0,
1483                                  /*getcount_only*/0);
1484         }
1485         return (ERESTART);
1486 }
1487
1488 static void
1489 dadone(struct cam_periph *periph, union ccb *done_ccb)
1490 {
1491         struct da_softc *softc;
1492         struct ccb_scsiio *csio;
1493
1494         softc = (struct da_softc *)periph->softc;
1495         csio = &done_ccb->csio;
1496         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1497         case DA_CCB_BUFFER_IO:
1498         {
1499                 struct buf *bp;
1500                 int    oldspl;
1501
1502                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1503                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1504                         int error;
1505                         int s;
1506                         int sf;
1507                         
1508                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1509                                 sf = SF_RETRY_UA;
1510                         else
1511                                 sf = 0;
1512
1513                         /* Retry selection timeouts */
1514                         sf |= SF_RETRY_SELTO;
1515
1516                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1517                                 /*
1518                                  * A retry was scheuled, so
1519                                  * just return.
1520                                  */
1521                                 return;
1522                         }
1523                         if (error != 0) {
1524                                 struct buf *q_bp;
1525
1526                                 s = splbio();
1527
1528                                 if (error == ENXIO) {
1529                                         /*
1530                                          * Catastrophic error.  Mark our pack as
1531                                          * invalid.
1532                                          */
1533                                         /* XXX See if this is really a media
1534                                          *     change first.
1535                                          */
1536                                         xpt_print_path(periph->path);
1537                                         printf("Invalidating pack\n");
1538                                         softc->flags |= DA_FLAG_PACK_INVALID;
1539                                 }
1540
1541                                 /*
1542                                  * return all queued I/O with EIO, so that
1543                                  * the client can retry these I/Os in the
1544                                  * proper order should it attempt to recover.
1545                                  */
1546                                 while ((q_bp = bufq_first(&softc->buf_queue))
1547                                         != NULL) {
1548                                         bufq_remove(&softc->buf_queue, q_bp);
1549                                         q_bp->b_resid = q_bp->b_bcount;
1550                                         q_bp->b_error = EIO;
1551                                         q_bp->b_flags |= B_ERROR;
1552                                         biodone(q_bp);
1553                                 }
1554                                 splx(s);
1555                                 bp->b_error = error;
1556                                 bp->b_resid = bp->b_bcount;
1557                                 bp->b_flags |= B_ERROR;
1558                         } else {
1559                                 bp->b_resid = csio->resid;
1560                                 bp->b_error = 0;
1561                                 if (bp->b_resid != 0)
1562                                         bp->b_flags |= B_ERROR;
1563                         }
1564                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1565                                 cam_release_devq(done_ccb->ccb_h.path,
1566                                                  /*relsim_flags*/0,
1567                                                  /*reduction*/0,
1568                                                  /*timeout*/0,
1569                                                  /*getcount_only*/0);
1570                 } else {
1571                         bp->b_resid = csio->resid;
1572                         if (csio->resid > 0)
1573                                 bp->b_flags |= B_ERROR;
1574                 }
1575
1576                 /*
1577                  * Block out any asyncronous callbacks
1578                  * while we touch the pending ccb list.
1579                  */
1580                 oldspl = splcam();
1581                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1582                 splx(oldspl);
1583
1584                 if (softc->device_stats.busy_count == 0)
1585                         softc->flags |= DA_FLAG_WENT_IDLE;
1586
1587                 devstat_end_transaction_buf(&softc->device_stats, bp);
1588                 biodone(bp);
1589                 break;
1590         }
1591         case DA_CCB_PROBE:
1592         {
1593                 struct     scsi_read_capacity_data *rdcap;
1594                 char       announce_buf[80];
1595
1596                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1597                 
1598                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1599                         struct disk_params *dp;
1600
1601                         dasetgeom(periph, rdcap);
1602                         dp = &softc->params;
1603                         snprintf(announce_buf, sizeof(announce_buf),
1604                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1605                                 (unsigned long) (((u_int64_t)dp->secsize *
1606                                 dp->sectors) / (1024*1024)), dp->sectors,
1607                                 dp->secsize, dp->heads, dp->secs_per_track,
1608                                 dp->cylinders);
1609                 } else {
1610                         int     error;
1611
1612                         announce_buf[0] = '\0';
1613
1614                         /*
1615                          * Retry any UNIT ATTENTION type errors.  They
1616                          * are expected at boot.
1617                          */
1618                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1619                                         SF_RETRY_SELTO | SF_NO_PRINT);
1620                         if (error == ERESTART) {
1621                                 /*
1622                                  * A retry was scheuled, so
1623                                  * just return.
1624                                  */
1625                                 return;
1626                         } else if (error != 0) {
1627                                 struct scsi_sense_data *sense;
1628                                 int asc, ascq;
1629                                 int sense_key, error_code;
1630                                 int have_sense;
1631                                 cam_status status;
1632                                 struct ccb_getdev cgd;
1633
1634                                 /* Don't wedge this device's queue */
1635                                 cam_release_devq(done_ccb->ccb_h.path,
1636                                                  /*relsim_flags*/0,
1637                                                  /*reduction*/0,
1638                                                  /*timeout*/0,
1639                                                  /*getcount_only*/0);
1640
1641                                 status = done_ccb->ccb_h.status;
1642
1643                                 xpt_setup_ccb(&cgd.ccb_h, 
1644                                               done_ccb->ccb_h.path,
1645                                               /* priority */ 1);
1646                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1647                                 xpt_action((union ccb *)&cgd);
1648
1649                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1650                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1651                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1652                                         have_sense = FALSE;
1653                                 else
1654                                         have_sense = TRUE;
1655
1656                                 if (have_sense) {
1657                                         sense = &csio->sense_data;
1658                                         scsi_extract_sense(sense, &error_code,
1659                                                            &sense_key, 
1660                                                            &asc, &ascq);
1661                                 }
1662                                 /*
1663                                  * Attach to anything that claims to be a
1664                                  * direct access or optical disk device,
1665                                  * as long as it doesn't return a "Logical
1666                                  * unit not supported" (0x25) error.
1667                                  */
1668                                 if ((have_sense) && (asc != 0x25)
1669                                  && (error_code == SSD_CURRENT_ERROR))
1670                                         snprintf(announce_buf,
1671                                             sizeof(announce_buf),
1672                                                 "Attempt to query device "
1673                                                 "size failed: %s, %s",
1674                                                 scsi_sense_key_text[sense_key],
1675                                                 scsi_sense_desc(asc,ascq,
1676                                                                 &cgd.inq_data));
1677                                 else { 
1678                                         if (have_sense)
1679                                                 scsi_sense_print(
1680                                                         &done_ccb->csio);
1681                                         else {
1682                                                 xpt_print_path(periph->path);
1683                                                 printf("got CAM status %#x\n",
1684                                                        done_ccb->ccb_h.status);
1685                                         }
1686
1687                                         xpt_print_path(periph->path);
1688                                         printf("fatal error, failed" 
1689                                                " to attach to device\n");
1690
1691                                         /*
1692                                          * Free up resources.
1693                                          */
1694                                         cam_periph_invalidate(periph);
1695                                 } 
1696                         }
1697                 }
1698                 free(rdcap, M_TEMP);
1699                 if (announce_buf[0] != '\0') {
1700                         xpt_announce_periph(periph, announce_buf);
1701                         /*
1702                          * Create our sysctl variables, now that we know
1703                          * we have successfully attached.
1704                          */
1705                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1706                 }
1707                 softc->state = DA_STATE_NORMAL;         
1708                 /*
1709                  * Since our peripheral may be invalidated by an error
1710                  * above or an external event, we must release our CCB
1711                  * before releasing the probe lock on the peripheral.
1712                  * The peripheral will only go away once the last lock
1713                  * is removed, and we need it around for the CCB release
1714                  * operation.
1715                  */
1716                 xpt_release_ccb(done_ccb);
1717                 cam_periph_unlock(periph);
1718                 return;
1719         }
1720         case DA_CCB_WAITING:
1721         {
1722                 /* Caller will release the CCB */
1723                 wakeup(&done_ccb->ccb_h.cbfcnp);
1724                 return;
1725         }
1726         case DA_CCB_DUMP:
1727                 /* No-op.  We're polling */
1728                 return;
1729         default:
1730                 break;
1731         }
1732         xpt_release_ccb(done_ccb);
1733 }
1734
1735 static int
1736 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1737 {
1738         struct da_softc   *softc;
1739         struct cam_periph *periph;
1740         int error;
1741
1742         periph = xpt_path_periph(ccb->ccb_h.path);
1743         softc = (struct da_softc *)periph->softc;
1744
1745         /*
1746          * Automatically detect devices that do not support
1747          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1748          */
1749         error = 0;
1750         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1751                 error = cmd6workaround(ccb);
1752         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1753                    CAM_SCSI_STATUS_ERROR)
1754          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1755          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1756          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1757          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1758                 int sense_key, error_code, asc, ascq;
1759
1760                 scsi_extract_sense(&ccb->csio.sense_data,
1761                                    &error_code, &sense_key, &asc, &ascq);
1762                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1763                         error = cmd6workaround(ccb);
1764         }
1765         if (error == ERESTART)
1766                 return (ERESTART);
1767
1768         /*
1769          * XXX
1770          * Until we have a better way of doing pack validation,
1771          * don't treat UAs as errors.
1772          */
1773         sense_flags |= SF_RETRY_UA;
1774         return(cam_periph_error(ccb, cam_flags, sense_flags,
1775                                 &softc->saved_ccb));
1776 }
1777
1778 static void
1779 daprevent(struct cam_periph *periph, int action)
1780 {
1781         struct  da_softc *softc;
1782         union   ccb *ccb;               
1783         int     error;
1784                 
1785         softc = (struct da_softc *)periph->softc;
1786
1787         if (((action == PR_ALLOW)
1788           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1789          || ((action == PR_PREVENT)
1790           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1791                 return;
1792         }
1793
1794         ccb = cam_periph_getccb(periph, /*priority*/1);
1795
1796         scsi_prevent(&ccb->csio,
1797                      /*retries*/1,
1798                      /*cbcfp*/dadone,
1799                      MSG_SIMPLE_Q_TAG,
1800                      action,
1801                      SSD_FULL_SIZE,
1802                      5000);
1803
1804         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1805                                   /*sense_flags*/0, &softc->device_stats);
1806
1807         if (error == 0) {
1808                 if (action == PR_ALLOW)
1809                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1810                 else
1811                         softc->flags |= DA_FLAG_PACK_LOCKED;
1812         }
1813
1814         xpt_release_ccb(ccb);
1815 }
1816
1817 static void
1818 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1819 {
1820         struct ccb_calc_geometry ccg;
1821         struct da_softc *softc;
1822         struct disk_params *dp;
1823
1824         softc = (struct da_softc *)periph->softc;
1825
1826         dp = &softc->params;
1827         dp->secsize = scsi_4btoul(rdcap->length);
1828         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1829         /*
1830          * Have the controller provide us with a geometry
1831          * for this disk.  The only time the geometry
1832          * matters is when we boot and the controller
1833          * is the only one knowledgeable enough to come
1834          * up with something that will make this a bootable
1835          * device.
1836          */
1837         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1838         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1839         ccg.block_size = dp->secsize;
1840         ccg.volume_size = dp->sectors;
1841         ccg.heads = 0;
1842         ccg.secs_per_track = 0;
1843         ccg.cylinders = 0;
1844         xpt_action((union ccb*)&ccg);
1845         dp->heads = ccg.heads;
1846         dp->secs_per_track = ccg.secs_per_track;
1847         dp->cylinders = ccg.cylinders;
1848 }
1849
1850 static void
1851 dasendorderedtag(void *arg)
1852 {
1853         struct da_softc *softc;
1854         int s;
1855
1856         for (softc = SLIST_FIRST(&softc_list);
1857              softc != NULL;
1858              softc = SLIST_NEXT(softc, links)) {
1859                 s = splsoftcam();
1860                 if ((softc->ordered_tag_count == 0) 
1861                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1862                         softc->flags |= DA_FLAG_NEED_OTAG;
1863                 }
1864                 if (softc->device_stats.busy_count > 0)
1865                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1866
1867                 softc->ordered_tag_count = 0;
1868                 splx(s);
1869         }
1870         /* Queue us up again */
1871         timeout(dasendorderedtag, NULL,
1872                 (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL);
1873 }
1874
1875 /*
1876  * Step through all DA peripheral drivers, and if the device is still open,
1877  * sync the disk cache to physical media.
1878  */
1879 static void
1880 dashutdown(void * arg, int howto)
1881 {
1882         struct cam_periph *periph;
1883         struct da_softc *softc;
1884
1885         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1886              periph = TAILQ_NEXT(periph, unit_links)) {
1887                 union ccb ccb;
1888                 softc = (struct da_softc *)periph->softc;
1889
1890                 /*
1891                  * We only sync the cache if the drive is still open, and
1892                  * if the drive is capable of it..
1893                  */
1894                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1895                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1896                         continue;
1897
1898                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1899
1900                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1901                 scsi_synchronize_cache(&ccb.csio,
1902                                        /*retries*/1,
1903                                        /*cbfcnp*/dadone,
1904                                        MSG_SIMPLE_Q_TAG,
1905                                        /*begin_lba*/0, /* whole disk */
1906                                        /*lb_count*/0,
1907                                        SSD_FULL_SIZE,
1908                                        5 * 60 * 1000);
1909
1910                 xpt_polled_action(&ccb);
1911
1912                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1913                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1914                              CAM_SCSI_STATUS_ERROR)
1915                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1916                                 int error_code, sense_key, asc, ascq;
1917
1918                                 scsi_extract_sense(&ccb.csio.sense_data,
1919                                                    &error_code, &sense_key,
1920                                                    &asc, &ascq);
1921
1922                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1923                                         scsi_sense_print(&ccb.csio);
1924                         } else {
1925                                 xpt_print_path(periph->path);
1926                                 printf("Synchronize cache failed, status "
1927                                        "== 0x%x, scsi status == 0x%x\n",
1928                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1929                         }
1930                 }
1931
1932                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1933                         cam_release_devq(ccb.ccb_h.path,
1934                                          /*relsim_flags*/0,
1935                                          /*reduction*/0,
1936                                          /*timeout*/0,
1937                                          /*getcount_only*/0);
1938
1939         }
1940 }
1941
1942 #else /* !_KERNEL */
1943
1944 /*
1945  * XXX This is only left out of the kernel build to silence warnings.  If,
1946  * for some reason this function is used in the kernel, the ifdefs should
1947  * be moved so it is included both in the kernel and userland.
1948  */
1949 void
1950 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1951                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1952                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1953                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1954                  u_int32_t timeout)
1955 {
1956         struct scsi_format_unit *scsi_cmd;
1957
1958         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1959         scsi_cmd->opcode = FORMAT_UNIT;
1960         scsi_cmd->byte2 = byte2;
1961         scsi_ulto2b(ileave, scsi_cmd->interleave);
1962
1963         cam_fill_csio(csio,
1964                       retries,
1965                       cbfcnp,
1966                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1967                       tag_action,
1968                       data_ptr,
1969                       dxfer_len,
1970                       sense_len,
1971                       sizeof(*scsi_cmd),
1972                       timeout);
1973 }
1974
1975 #endif /* _KERNEL */