Synchronize the USB, CAM, and TASKQUEUE subsystems with FreeBSD RELENG_4.
[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 1.12 2003/12/29 06:42:10 dillon 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                  * FujiFilm Camera
339                  */
340                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT",
341                  "USB-DRIVEUNIT", "*"},
342                 /*quirks*/ DA_Q_NO_SYNC_CACHE
343         },
344         {
345                 /*
346                  * Minolta Dimage E203
347                  */
348                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"},
349                 /*quirks*/ DA_Q_NO_SYNC_CACHE
350         },
351         {
352                 /*
353                  * Apacer HandyDrive
354                  * PR: kern/43627
355                  */
356                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"},
357                 /*quirks*/ DA_Q_NO_SYNC_CACHE
358         },
359         {
360                 /*
361                  * Daisy Technology PhotoClip on Zoran chip
362                  * PR: kern/43580
363                  */
364                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"},
365                 /*quirks*/ DA_Q_NO_SYNC_CACHE
366         },
367         {
368                 /*
369                  * Sony USB Key-Storage
370                  * PR: kern/46386
371                  */
372                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"},
373                 /*quirks*/ DA_Q_NO_SYNC_CACHE
374         },
375 #endif /* DA_OLD_QUIRKS */
376         {
377                 /*
378                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
379                  * PR: kern/51675
380                  */
381                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
382                 /*quirks*/ DA_Q_NO_SYNC_CACHE
383         },
384         {
385                 /*
386                  * Jungsoft NEXDISK USB flash key
387                  * PR: kern/54737
388                  */
389                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
390                 /*quirks*/ DA_Q_NO_SYNC_CACHE
391         },
392         {
393                 /*
394                  * Creative Nomad MUVO mp3 player (USB)
395                  * PR: kern/53094
396                  */
397                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
398                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
399         },
400 };
401
402 static  d_open_t        daopen;
403 static  d_close_t       daclose;
404 static  d_strategy_t    dastrategy;
405 static  d_ioctl_t       daioctl;
406 static  d_dump_t        dadump;
407 static  periph_init_t   dainit;
408 static  void            daasync(void *callback_arg, u_int32_t code,
409                                 struct cam_path *path, void *arg);
410 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
411 static  periph_ctor_t   daregister;
412 static  periph_dtor_t   dacleanup;
413 static  periph_start_t  dastart;
414 static  periph_oninv_t  daoninvalidate;
415 static  void            dadone(struct cam_periph *periph,
416                                union ccb *done_ccb);
417 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
418                                 u_int32_t sense_flags);
419 static void             daprevent(struct cam_periph *periph, int action);
420 static void             dasetgeom(struct cam_periph *periph,
421                                   struct scsi_read_capacity_data * rdcap);
422 static timeout_t        dasendorderedtag;
423 static void             dashutdown(void *arg, int howto);
424
425 #ifndef DA_DEFAULT_TIMEOUT
426 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
427 #endif
428
429 #ifndef DA_DEFAULT_RETRY
430 #define DA_DEFAULT_RETRY        4
431 #endif
432
433 static int da_retry_count = DA_DEFAULT_RETRY;
434 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
435
436 SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD, 0, "CAM Subsystem");
437 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
438             "CAM Direct Access Disk driver");
439 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
440            &da_retry_count, 0, "Normal I/O retry count");
441 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
442 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
443            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
444 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
445
446 /*
447  * DA_ORDEREDTAG_INTERVAL determines how often, relative
448  * to the default timeout, we check to see whether an ordered
449  * tagged transaction is appropriate to prevent simple tag
450  * starvation.  Since we'd like to ensure that there is at least
451  * 1/2 of the timeout length left for a starved transaction to
452  * complete after we've sent an ordered tag, we must poll at least
453  * four times in every timeout period.  This takes care of the worst
454  * case where a starved transaction starts during an interval that
455  * meets the requirement "don't send an ordered tag" test so it takes
456  * us two intervals to determine that a tag must be sent.
457  */
458 #ifndef DA_ORDEREDTAG_INTERVAL
459 #define DA_ORDEREDTAG_INTERVAL 4
460 #endif
461
462 static struct periph_driver dadriver =
463 {
464         dainit, "da",
465         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
466 };
467
468 DATA_SET(periphdriver_set, dadriver);
469
470 /* For 2.2-stable support */
471 #ifndef D_DISK
472 #define D_DISK 0
473 #endif
474
475 static struct cdevsw da_cdevsw = {
476         /* name */      "da",
477         /* maj */       DA_CDEV_MAJOR,
478         /* flags */     D_DISK,
479         /* port */      NULL,
480         /* autoq */     0,
481
482         /* open */      daopen,
483         /* close */     daclose,
484         /* read */      physread,
485         /* write */     physwrite,
486         /* ioctl */     daioctl,
487         /* poll */      nopoll,
488         /* mmap */      nommap,
489         /* strategy */  dastrategy,
490         /* dump */      dadump,
491         /* psize */     nopsize
492 };
493
494 static SLIST_HEAD(,da_softc) softc_list;
495 static struct extend_array *daperiphs;
496
497 static int
498 daopen(dev_t dev, int flags, int fmt, struct thread *td)
499 {
500         struct cam_periph *periph;
501         struct da_softc *softc;
502         struct disklabel *label;        
503         int unit;
504         int part;
505         int error;
506         int s;
507
508         unit = dkunit(dev);
509         part = dkpart(dev);
510         periph = cam_extend_get(daperiphs, unit);
511         if (periph == NULL)
512                 return (ENXIO); 
513
514         softc = (struct da_softc *)periph->softc;
515
516         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
517             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
518              unit, part));
519
520         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
521                 return (error); /* error code from tsleep */
522         }
523
524         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
525                 return(ENXIO);
526         softc->flags |= DA_FLAG_OPEN;
527
528         s = splsoftcam();
529         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
530                 /* Invalidate our pack information. */
531                 disk_invalidate(&softc->disk);
532                 softc->flags &= ~DA_FLAG_PACK_INVALID;
533         }
534         splx(s);
535
536         /* Do a read capacity */
537         {
538                 struct scsi_read_capacity_data *rcap;
539                 union  ccb *ccb;
540
541                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
542                                                                 M_TEMP,
543                                                                 M_WAITOK);
544                 
545                 ccb = cam_periph_getccb(periph, /*priority*/1);
546                 scsi_read_capacity(&ccb->csio,
547                                    /*retries*/1,
548                                    /*cbfncp*/dadone,
549                                    MSG_SIMPLE_Q_TAG,
550                                    rcap,
551                                    SSD_FULL_SIZE,
552                                    /*timeout*/60000);
553                 ccb->ccb_h.ccb_bp = NULL;
554
555                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
556                                           /*sense_flags*/SF_RETRY_UA |
557                                                          SF_RETRY_SELTO,
558                                           &softc->device_stats);
559
560                 xpt_release_ccb(ccb);
561
562                 if (error == 0) {
563                         dasetgeom(periph, rcap);
564                 }
565
566                 free(rcap, M_TEMP);
567         }
568
569         if (error == 0) {
570                 struct ccb_getdev cgd;
571
572                 /* Build label for whole disk. */
573                 label = &softc->disk.d_label;
574                 bzero(label, sizeof(*label));
575                 label->d_type = DTYPE_SCSI;
576
577                 /*
578                  * Grab the inquiry data to get the vendor and product names.
579                  * Put them in the typename and packname for the label.
580                  */
581                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
582                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
583                 xpt_action((union ccb *)&cgd);
584
585                 strncpy(label->d_typename, cgd.inq_data.vendor,
586                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
587                 strncpy(label->d_packname, cgd.inq_data.product,
588                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
589                 
590                 label->d_secsize = softc->params.secsize;
591                 label->d_nsectors = softc->params.secs_per_track;
592                 label->d_ntracks = softc->params.heads;
593                 label->d_ncylinders = softc->params.cylinders;
594                 label->d_secpercyl = softc->params.heads
595                                   * softc->params.secs_per_track;
596                 label->d_secperunit = softc->params.sectors;
597
598                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
599                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
600                         daprevent(periph, PR_PREVENT);
601         
602                 /*
603                  * Check to see whether or not the blocksize is set yet.
604                  * If it isn't, set it and then clear the blocksize
605                  * unavailable flag for the device statistics.
606                  */
607                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
608                         softc->device_stats.block_size = softc->params.secsize;
609                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
610                 }
611         }
612         
613         if (error != 0) {
614                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
615                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
616                         daprevent(periph, PR_ALLOW);
617                 softc->flags &= ~DA_FLAG_OPEN;
618                 cam_periph_release(periph);
619         }
620         cam_periph_unlock(periph);
621         return (error);
622 }
623
624 static int
625 daclose(dev_t dev, int flag, int fmt, struct thread *td)
626 {
627         struct  cam_periph *periph;
628         struct  da_softc *softc;
629         int     unit;
630         int     error;
631
632         unit = dkunit(dev);
633         periph = cam_extend_get(daperiphs, unit);
634         if (periph == NULL)
635                 return (ENXIO); 
636
637         softc = (struct da_softc *)periph->softc;
638
639         if ((error = cam_periph_lock(periph, 0)) != 0) {
640                 return (error); /* error code from tsleep */
641         }
642
643         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
644                 union   ccb *ccb;
645
646                 ccb = cam_periph_getccb(periph, /*priority*/1);
647
648                 scsi_synchronize_cache(&ccb->csio,
649                                        /*retries*/1,
650                                        /*cbfcnp*/dadone,
651                                        MSG_SIMPLE_Q_TAG,
652                                        /*begin_lba*/0,/* Cover the whole disk */
653                                        /*lb_count*/0,
654                                        SSD_FULL_SIZE,
655                                        5 * 60 * 1000);
656
657                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
658                                   /*sense_flags*/SF_RETRY_UA,
659                                   &softc->device_stats);
660
661                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
662                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
663                              CAM_SCSI_STATUS_ERROR) {
664                                 int asc, ascq;
665                                 int sense_key, error_code;
666
667                                 scsi_extract_sense(&ccb->csio.sense_data,
668                                                    &error_code,
669                                                    &sense_key, 
670                                                    &asc, &ascq);
671                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
672                                         scsi_sense_print(&ccb->csio);
673                         } else {
674                                 xpt_print_path(periph->path);
675                                 printf("Synchronize cache failed, status "
676                                        "== 0x%x, scsi status == 0x%x\n",
677                                        ccb->csio.ccb_h.status,
678                                        ccb->csio.scsi_status);
679                         }
680                 }
681
682                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
683                         cam_release_devq(ccb->ccb_h.path,
684                                          /*relsim_flags*/0,
685                                          /*reduction*/0,
686                                          /*timeout*/0,
687                                          /*getcount_only*/0);
688
689                 xpt_release_ccb(ccb);
690
691         }
692
693         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
694                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
695                         daprevent(periph, PR_ALLOW);
696                 /*
697                  * If we've got removeable media, mark the blocksize as
698                  * unavailable, since it could change when new media is
699                  * inserted.
700                  */
701                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
702         }
703
704         softc->flags &= ~DA_FLAG_OPEN;
705         cam_periph_unlock(periph);
706         cam_periph_release(periph);
707         return (0);     
708 }
709
710 /*
711  * Actually translate the requested transfer into one the physical driver
712  * can understand.  The transfer is described by a buf and will include
713  * only one physical transfer.
714  */
715 static void
716 dastrategy(struct buf *bp)
717 {
718         struct cam_periph *periph;
719         struct da_softc *softc;
720         u_int  unit;
721         u_int  part;
722         int    s;
723         
724         unit = dkunit(bp->b_dev);
725         part = dkpart(bp->b_dev);
726         periph = cam_extend_get(daperiphs, unit);
727         if (periph == NULL) {
728                 bp->b_error = ENXIO;
729                 goto bad;               
730         }
731         softc = (struct da_softc *)periph->softc;
732 #if 0
733         /*
734          * check it's not too big a transfer for our adapter
735          */
736         scsi_minphys(bp,&sd_switch);
737 #endif
738
739         /*
740          * Mask interrupts so that the pack cannot be invalidated until
741          * after we are in the queue.  Otherwise, we might not properly
742          * clean up one of the buffers.
743          */
744         s = splbio();
745         
746         /*
747          * If the device has been made invalid, error out
748          */
749         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
750                 splx(s);
751                 bp->b_error = ENXIO;
752                 goto bad;
753         }
754         
755         /*
756          * Place it in the queue of disk activities for this disk
757          */
758         bufqdisksort(&softc->buf_queue, bp);
759
760         splx(s);
761         
762         /*
763          * Schedule ourselves for performing the work.
764          */
765         xpt_schedule(periph, /* XXX priority */1);
766
767         return;
768 bad:
769         bp->b_flags |= B_ERROR;
770
771         /*
772          * Correctly set the buf to indicate a completed xfer
773          */
774         bp->b_resid = bp->b_bcount;
775         biodone(bp);
776         return;
777 }
778
779 /* For 2.2-stable support */
780 #ifndef ENOIOCTL
781 #define ENOIOCTL -1
782 #endif
783
784 static int
785 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
786 {
787         struct cam_periph *periph;
788         struct da_softc *softc;
789         int unit;
790         int error;
791
792         unit = dkunit(dev);
793         periph = cam_extend_get(daperiphs, unit);
794         if (periph == NULL)
795                 return (ENXIO); 
796
797         softc = (struct da_softc *)periph->softc;
798
799         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
800
801         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
802                 return (error); /* error code from tsleep */
803         }       
804
805         error = cam_periph_ioctl(periph, cmd, addr, daerror);
806
807         cam_periph_unlock(periph);
808         
809         return (error);
810 }
811
812 static int
813 dadump(dev_t dev)
814 {
815         struct      cam_periph *periph;
816         struct      da_softc *softc;
817         u_int       unit;
818         u_int       part;
819         u_int       secsize;
820         u_int       num;        /* number of sectors to write */
821         u_int       blknum;
822         long        blkcnt;
823         vm_paddr_t  addr;       
824         struct      ccb_scsiio csio;
825         int         dumppages = MAXDUMPPGS;
826         int         error;
827         int         i;
828
829         /* toss any characters present prior to dump */
830         while (cncheckc() != -1)
831                 ;
832
833         unit = dkunit(dev);
834         part = dkpart(dev);
835         periph = cam_extend_get(daperiphs, unit);
836         if (periph == NULL) {
837                 return (ENXIO);
838         }
839         softc = (struct da_softc *)periph->softc;
840         
841         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
842                 return (ENXIO);
843
844         error = disk_dumpcheck(dev, &num, &blknum, &secsize);
845         if (error)
846                 return (error);
847
848         addr = 0;       /* starting address */
849         blkcnt = howmany(PAGE_SIZE, secsize);
850
851         while (num > 0) {
852                 caddr_t va = NULL;
853
854                 if ((num / blkcnt) < dumppages)
855                         dumppages = num / blkcnt;
856
857                 for (i = 0; i < dumppages; ++i) {
858                         vm_paddr_t a = addr + (i * PAGE_SIZE);
859                         if (is_physical_memory(a))
860                                 va = pmap_kenter_temporary(trunc_page(a), i);
861                         else
862                                 va = pmap_kenter_temporary(trunc_page(0), i);
863                 }
864
865                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
866                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
867                 scsi_read_write(&csio,
868                                 /*retries*/1,
869                                 dadone,
870                                 MSG_ORDERED_Q_TAG,
871                                 /*read*/FALSE,
872                                 /*byte2*/0,
873                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
874                                 blknum,
875                                 blkcnt * dumppages,
876                                 /*data_ptr*/(u_int8_t *) va,
877                                 /*dxfer_len*/blkcnt * secsize * dumppages,
878                                 /*sense_len*/SSD_FULL_SIZE,
879                                 DA_DEFAULT_TIMEOUT * 1000);             
880                 xpt_polled_action((union ccb *)&csio);
881
882                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
883                         printf("Aborting dump due to I/O error.\n");
884                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
885                              CAM_SCSI_STATUS_ERROR)
886                                 scsi_sense_print(&csio);
887                         else
888                                 printf("status == 0x%x, scsi status == 0x%x\n",
889                                        csio.ccb_h.status, csio.scsi_status);
890                         return(EIO);
891                 }
892                 
893                 if (dumpstatus(addr, (off_t)num * softc->params.secsize) < 0)
894                         return (EINTR);
895
896                 /* update block count */
897                 num -= blkcnt * dumppages;
898                 blknum += blkcnt * dumppages;
899                 addr += PAGE_SIZE * dumppages;
900         }
901
902         /*
903          * Sync the disk cache contents to the physical media.
904          */
905         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
906
907                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
908                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
909                 scsi_synchronize_cache(&csio,
910                                        /*retries*/1,
911                                        /*cbfcnp*/dadone,
912                                        MSG_SIMPLE_Q_TAG,
913                                        /*begin_lba*/0,/* Cover the whole disk */
914                                        /*lb_count*/0,
915                                        SSD_FULL_SIZE,
916                                        5 * 60 * 1000);
917                 xpt_polled_action((union ccb *)&csio);
918
919                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
920                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
921                              CAM_SCSI_STATUS_ERROR) {
922                                 int asc, ascq;
923                                 int sense_key, error_code;
924
925                                 scsi_extract_sense(&csio.sense_data,
926                                                    &error_code,
927                                                    &sense_key, 
928                                                    &asc, &ascq);
929                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
930                                         scsi_sense_print(&csio);
931                         } else {
932                                 xpt_print_path(periph->path);
933                                 printf("Synchronize cache failed, status "
934                                        "== 0x%x, scsi status == 0x%x\n",
935                                        csio.ccb_h.status, csio.scsi_status);
936                         }
937                 }
938         }
939         return (0);
940 }
941
942 static void
943 dainit(void)
944 {
945         cam_status status;
946         struct cam_path *path;
947
948         /*
949          * Create our extend array for storing the devices we attach to.
950          */
951         daperiphs = cam_extend_new();
952         SLIST_INIT(&softc_list);
953         if (daperiphs == NULL) {
954                 printf("da: Failed to alloc extend array!\n");
955                 return;
956         }
957         
958         /*
959          * Install a global async callback.  This callback will
960          * receive async callbacks like "new device found".
961          */
962         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
963                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
964
965         if (status == CAM_REQ_CMP) {
966                 struct ccb_setasync csa;
967
968                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
969                 csa.ccb_h.func_code = XPT_SASYNC_CB;
970                 csa.event_enable = AC_FOUND_DEVICE;
971                 csa.callback = daasync;
972                 csa.callback_arg = NULL;
973                 xpt_action((union ccb *)&csa);
974                 status = csa.ccb_h.status;
975                 xpt_free_path(path);
976         }
977
978         if (status != CAM_REQ_CMP) {
979                 printf("da: Failed to attach master async callback "
980                        "due to status 0x%x!\n", status);
981         } else {
982
983                 /*
984                  * Schedule a periodic event to occasionally send an
985                  * ordered tag to a device.
986                  */
987                 timeout(dasendorderedtag, NULL,
988                         (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
989
990                 /* Register our shutdown event handler */
991                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown, 
992                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
993                     printf("dainit: shutdown event registration failed!\n");
994         }
995 }
996
997 static void
998 daoninvalidate(struct cam_periph *periph)
999 {
1000         int s;
1001         struct da_softc *softc;
1002         struct buf *q_bp;
1003         struct ccb_setasync csa;
1004
1005         softc = (struct da_softc *)periph->softc;
1006
1007         /*
1008          * De-register any async callbacks.
1009          */
1010         xpt_setup_ccb(&csa.ccb_h, periph->path,
1011                       /* priority */ 5);
1012         csa.ccb_h.func_code = XPT_SASYNC_CB;
1013         csa.event_enable = 0;
1014         csa.callback = daasync;
1015         csa.callback_arg = periph;
1016         xpt_action((union ccb *)&csa);
1017
1018         softc->flags |= DA_FLAG_PACK_INVALID;
1019
1020         /*
1021          * Although the oninvalidate() routines are always called at
1022          * splsoftcam, we need to be at splbio() here to keep the buffer
1023          * queue from being modified while we traverse it.
1024          */
1025         s = splbio();
1026
1027         /*
1028          * Return all queued I/O with ENXIO.
1029          * XXX Handle any transactions queued to the card
1030          *     with XPT_ABORT_CCB.
1031          */
1032         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1033                 bufq_remove(&softc->buf_queue, q_bp);
1034                 q_bp->b_resid = q_bp->b_bcount;
1035                 q_bp->b_error = ENXIO;
1036                 q_bp->b_flags |= B_ERROR;
1037                 biodone(q_bp);
1038         }
1039         splx(s);
1040
1041         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1042
1043         xpt_print_path(periph->path);
1044         printf("lost device\n");
1045 }
1046
1047 static void
1048 dacleanup(struct cam_periph *periph)
1049 {
1050         struct da_softc *softc;
1051
1052         softc = (struct da_softc *)periph->softc;
1053
1054         devstat_remove_entry(&softc->device_stats);
1055         cam_extend_release(daperiphs, periph->unit_number);
1056         xpt_print_path(periph->path);
1057         printf("removing device entry\n");
1058         /*
1059          * If we can't free the sysctl tree, oh well...
1060          */
1061         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1062             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1063                 xpt_print_path(periph->path);
1064                 printf("can't remove sysctl context\n");
1065         }
1066         if (softc->disk.d_dev) {
1067                 disk_destroy(&softc->disk);
1068         }
1069         free(softc, M_DEVBUF);
1070 }
1071
1072 static void
1073 daasync(void *callback_arg, u_int32_t code,
1074         struct cam_path *path, void *arg)
1075 {
1076         struct cam_periph *periph;
1077
1078         periph = (struct cam_periph *)callback_arg;
1079         switch (code) {
1080         case AC_FOUND_DEVICE:
1081         {
1082                 struct ccb_getdev *cgd;
1083                 cam_status status;
1084  
1085                 cgd = (struct ccb_getdev *)arg;
1086
1087                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1088                     && SID_TYPE(&cgd->inq_data) != T_RBC
1089                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1090                         break;
1091
1092                 /*
1093                  * Allocate a peripheral instance for
1094                  * this device and start the probe
1095                  * process.
1096                  */
1097                 status = cam_periph_alloc(daregister, daoninvalidate,
1098                                           dacleanup, dastart,
1099                                           "da", CAM_PERIPH_BIO,
1100                                           cgd->ccb_h.path, daasync,
1101                                           AC_FOUND_DEVICE, cgd);
1102
1103                 if (status != CAM_REQ_CMP
1104                  && status != CAM_REQ_INPROG)
1105                         printf("daasync: Unable to attach to new device "
1106                                 "due to status 0x%x\n", status);
1107                 break;
1108         }
1109         case AC_SENT_BDR:
1110         case AC_BUS_RESET:
1111         {
1112                 struct da_softc *softc;
1113                 struct ccb_hdr *ccbh;
1114                 int s;
1115
1116                 softc = (struct da_softc *)periph->softc;
1117                 s = splsoftcam();
1118                 /*
1119                  * Don't fail on the expected unit attention
1120                  * that will occur.
1121                  */
1122                 softc->flags |= DA_FLAG_RETRY_UA;
1123                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
1124                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
1125                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1126                 splx(s);
1127                 /* FALLTHROUGH*/
1128         }
1129         default:
1130                 cam_periph_async(periph, code, path, arg);
1131                 break;
1132         }
1133 }
1134
1135 static void
1136 dasysctlinit(void *context, int pending)
1137 {
1138         struct cam_periph *periph;
1139         struct da_softc *softc;
1140         char tmpstr[80], tmpstr2[80];
1141
1142         periph = (struct cam_periph *)context;
1143         softc = (struct da_softc *)periph->softc;
1144
1145         snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1146         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1147
1148         sysctl_ctx_init(&softc->sysctl_ctx);
1149         softc->flags |= DA_FLAG_SCTX_INIT;
1150         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1151                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1152                 CTLFLAG_RD, 0, tmpstr);
1153         if (softc->sysctl_tree == NULL) {
1154                 printf("dasysctlinit: unable to allocate sysctl tree\n");
1155                 return;
1156         }
1157
1158         /*
1159          * Now register the sysctl handler, so the user can the value on
1160          * the fly.
1161          */
1162         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1163                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1164                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1165                 "Minimum CDB size");
1166 }
1167
1168 static int
1169 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1170 {
1171         int error, value;
1172
1173         value = *(int *)arg1;
1174
1175         error = sysctl_handle_int(oidp, &value, 0, req);
1176
1177         if ((error != 0)
1178          || (req->newptr == NULL))
1179                 return (error);
1180
1181         /*
1182          * Acceptable values here are 6, 10 or 12.  It's possible we may
1183          * support a 16 byte minimum command size in the future, since
1184          * there are now READ(16) and WRITE(16) commands defined in the
1185          * SBC-2 spec.
1186          */
1187         if (value < 6)
1188                 value = 6;
1189         else if ((value > 6)
1190               && (value <= 10))
1191                 value = 10;
1192         else if (value > 10)
1193                 value = 12;
1194
1195         *(int *)arg1 = value;
1196
1197         return (0);
1198 }
1199
1200 static cam_status
1201 daregister(struct cam_periph *periph, void *arg)
1202 {
1203         int s;
1204         struct da_softc *softc;
1205         struct ccb_setasync csa;
1206         struct ccb_pathinq cpi;
1207         struct ccb_getdev *cgd;
1208         char tmpstr[80];
1209         caddr_t match;
1210
1211         cgd = (struct ccb_getdev *)arg;
1212         if (periph == NULL) {
1213                 printf("daregister: periph was NULL!!\n");
1214                 return(CAM_REQ_CMP_ERR);
1215         }
1216
1217         if (cgd == NULL) {
1218                 printf("daregister: no getdev CCB, can't register device\n");
1219                 return(CAM_REQ_CMP_ERR);
1220         }
1221
1222         softc = (struct da_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
1223
1224         if (softc == NULL) {
1225                 printf("daregister: Unable to probe new device. "
1226                        "Unable to allocate softc\n");                           
1227                 return(CAM_REQ_CMP_ERR);
1228         }
1229
1230         bzero(softc, sizeof(*softc));
1231         LIST_INIT(&softc->pending_ccbs);
1232         softc->state = DA_STATE_PROBE;
1233         bufq_init(&softc->buf_queue);
1234         if (SID_IS_REMOVABLE(&cgd->inq_data))
1235                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1236         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1237                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1238
1239         periph->softc = softc;
1240         
1241         cam_extend_set(daperiphs, periph->unit_number, periph);
1242
1243         /*
1244          * See if this device has any quirks.
1245          */
1246         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1247                                (caddr_t)da_quirk_table,
1248                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1249                                sizeof(*da_quirk_table), scsi_inquiry_match);
1250
1251         if (match != NULL)
1252                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1253         else
1254                 softc->quirks = DA_Q_NONE;
1255
1256         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1257
1258         /* Check if the SIM does not want 6 byte commands */
1259         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1260         cpi.ccb_h.func_code = XPT_PATH_INQ;
1261         xpt_action((union ccb *)&cpi);
1262         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1263                 softc->quirks |= DA_Q_NO_6_BYTE;
1264
1265         /*
1266          * RBC devices don't have to support READ(6), only READ(10).
1267          */
1268         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1269                 softc->minimum_cmd_size = 10;
1270         else
1271                 softc->minimum_cmd_size = 6;
1272
1273         /*
1274          * Load the user's default, if any.
1275          */
1276         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1277                  periph->unit_number);
1278         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1279
1280         /*
1281          * 6, 10 and 12 are the currently permissible values.
1282          */
1283         if (softc->minimum_cmd_size < 6)
1284                 softc->minimum_cmd_size = 6;
1285         else if ((softc->minimum_cmd_size > 6)
1286               && (softc->minimum_cmd_size <= 10))
1287                 softc->minimum_cmd_size = 10;
1288         else if (softc->minimum_cmd_size > 12)
1289                 softc->minimum_cmd_size = 12;
1290
1291         /*
1292          * Block our timeout handler while we
1293          * add this softc to the dev list.
1294          */
1295         s = splsoftclock();
1296         SLIST_INSERT_HEAD(&softc_list, softc, links);
1297         splx(s);
1298
1299         /*
1300          * The DA driver supports a blocksize, but
1301          * we don't know the blocksize until we do 
1302          * a read capacity.  So, set a flag to
1303          * indicate that the blocksize is 
1304          * unavailable right now.  We'll clear the
1305          * flag as soon as we've done a read capacity.
1306          */
1307         devstat_add_entry(&softc->device_stats, "da", 
1308                           periph->unit_number, 0,
1309                           DEVSTAT_BS_UNAVAILABLE,
1310                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1311                           DEVSTAT_PRIORITY_DISK);
1312
1313         /*
1314          * Register this media as a disk
1315          */
1316         disk_create(periph->unit_number, &softc->disk, 0, &da_cdevsw);
1317
1318         /*
1319          * Add async callbacks for bus reset and
1320          * bus device reset calls.  I don't bother
1321          * checking if this fails as, in most cases,
1322          * the system will function just fine without
1323          * them and the only alternative would be to
1324          * not attach the device on failure.
1325          */
1326         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1327         csa.ccb_h.func_code = XPT_SASYNC_CB;
1328         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1329         csa.callback = daasync;
1330         csa.callback_arg = periph;
1331         xpt_action((union ccb *)&csa);
1332         /*
1333          * Lock this peripheral until we are setup.
1334          * This first call can't block
1335          */
1336         (void)cam_periph_lock(periph, 0);
1337         xpt_schedule(periph, /*priority*/5);
1338
1339         return(CAM_REQ_CMP);
1340 }
1341
1342 static void
1343 dastart(struct cam_periph *periph, union ccb *start_ccb)
1344 {
1345         struct da_softc *softc;
1346
1347         softc = (struct da_softc *)periph->softc;
1348
1349         
1350         switch (softc->state) {
1351         case DA_STATE_NORMAL:
1352         {
1353                 /* Pull a buffer from the queue and get going on it */          
1354                 struct buf *bp;
1355                 int s;
1356
1357                 /*
1358                  * See if there is a buf with work for us to do..
1359                  */
1360                 s = splbio();
1361                 bp = bufq_first(&softc->buf_queue);
1362                 if (periph->immediate_priority <= periph->pinfo.priority) {
1363                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1364                                         ("queuing for immediate ccb\n"));
1365                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1366                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1367                                           periph_links.sle);
1368                         periph->immediate_priority = CAM_PRIORITY_NONE;
1369                         splx(s);
1370                         wakeup(&periph->ccb_list);
1371                 } else if (bp == NULL) {
1372                         splx(s);
1373                         xpt_release_ccb(start_ccb);
1374                 } else {
1375                         int oldspl;
1376                         u_int8_t tag_code;
1377
1378                         bufq_remove(&softc->buf_queue, bp);
1379
1380                         devstat_start_transaction(&softc->device_stats);
1381
1382                         if ((bp->b_flags & B_ORDERED) != 0
1383                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1384                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1385                                 softc->ordered_tag_count++;
1386                                 tag_code = MSG_ORDERED_Q_TAG;
1387                         } else {
1388                                 tag_code = MSG_SIMPLE_Q_TAG;
1389                         }
1390                         scsi_read_write(&start_ccb->csio,
1391                                         /*retries*/da_retry_count,
1392                                         dadone,
1393                                         tag_code,
1394                                         bp->b_flags & B_READ,
1395                                         /*byte2*/0,
1396                                         softc->minimum_cmd_size,
1397                                         bp->b_pblkno,
1398                                         bp->b_bcount / softc->params.secsize,
1399                                         bp->b_data,
1400                                         bp->b_bcount,
1401                                         /*sense_len*/SSD_FULL_SIZE,
1402                                         da_default_timeout * 1000);
1403                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1404
1405                         /*
1406                          * Block out any asyncronous callbacks
1407                          * while we touch the pending ccb list.
1408                          */
1409                         oldspl = splcam();
1410                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1411                                          &start_ccb->ccb_h, periph_links.le);
1412                         splx(oldspl);
1413
1414                         /* We expect a unit attention from this device */
1415                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1416                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1417                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1418                         }
1419
1420                         start_ccb->ccb_h.ccb_bp = bp;
1421                         bp = bufq_first(&softc->buf_queue);
1422                         splx(s);
1423
1424                         xpt_action(start_ccb);
1425                 }
1426                 
1427                 if (bp != NULL) {
1428                         /* Have more work to do, so ensure we stay scheduled */
1429                         xpt_schedule(periph, /* XXX priority */1);
1430                 }
1431                 break;
1432         }
1433         case DA_STATE_PROBE:
1434         {
1435                 struct ccb_scsiio *csio;
1436                 struct scsi_read_capacity_data *rcap;
1437
1438                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1439                                                                 M_TEMP,
1440                                                                 M_NOWAIT);
1441                 if (rcap == NULL) {
1442                         printf("dastart: Couldn't malloc read_capacity data\n");
1443                         /* da_free_periph??? */
1444                         break;
1445                 }
1446                 csio = &start_ccb->csio;
1447                 scsi_read_capacity(csio,
1448                                    /*retries*/4,
1449                                    dadone,
1450                                    MSG_SIMPLE_Q_TAG,
1451                                    rcap,
1452                                    SSD_FULL_SIZE,
1453                                    /*timeout*/5000);
1454                 start_ccb->ccb_h.ccb_bp = NULL;
1455                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1456                 xpt_action(start_ccb);
1457                 break;
1458         }
1459         }
1460 }
1461
1462 static int
1463 cmd6workaround(union ccb *ccb)
1464 {
1465         struct scsi_rw_6 cmd6;
1466         struct scsi_rw_10 *cmd10;
1467         struct da_softc *softc;
1468         u_int8_t *cdb;
1469         int frozen;
1470
1471         cdb = ccb->csio.cdb_io.cdb_bytes;
1472
1473         /* Translation only possible if CDB is an array and cmd is R/W6 */
1474         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1475             (*cdb != READ_6 && *cdb != WRITE_6))
1476                 return 0;
1477
1478         xpt_print_path(ccb->ccb_h.path);
1479         printf("READ(6)/WRITE(6) not supported, "
1480                "increasing minimum_cmd_size to 10.\n");
1481         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1482         softc->minimum_cmd_size = 10;
1483
1484         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1485         cmd10 = (struct scsi_rw_10 *)cdb;
1486         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1487         cmd10->byte2 = 0;
1488         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1489         cmd10->reserved = 0;
1490         scsi_ulto2b(cmd6.length, cmd10->length);
1491         cmd10->control = cmd6.control;
1492         ccb->csio.cdb_len = sizeof(*cmd10);
1493
1494         /* Requeue request, unfreezing queue if necessary */
1495         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1496         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1497         xpt_action(ccb);
1498         if (frozen) {
1499                 cam_release_devq(ccb->ccb_h.path,
1500                                  /*relsim_flags*/0,
1501                                  /*reduction*/0,
1502                                  /*timeout*/0,
1503                                  /*getcount_only*/0);
1504         }
1505         return (ERESTART);
1506 }
1507
1508 static void
1509 dadone(struct cam_periph *periph, union ccb *done_ccb)
1510 {
1511         struct da_softc *softc;
1512         struct ccb_scsiio *csio;
1513
1514         softc = (struct da_softc *)periph->softc;
1515         csio = &done_ccb->csio;
1516         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1517         case DA_CCB_BUFFER_IO:
1518         {
1519                 struct buf *bp;
1520                 int    oldspl;
1521
1522                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1523                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1524                         int error;
1525                         int s;
1526                         int sf;
1527                         
1528                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1529                                 sf = SF_RETRY_UA;
1530                         else
1531                                 sf = 0;
1532
1533                         /* Retry selection timeouts */
1534                         sf |= SF_RETRY_SELTO;
1535
1536                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1537                                 /*
1538                                  * A retry was scheuled, so
1539                                  * just return.
1540                                  */
1541                                 return;
1542                         }
1543                         if (error != 0) {
1544                                 struct buf *q_bp;
1545
1546                                 s = splbio();
1547
1548                                 if (error == ENXIO) {
1549                                         /*
1550                                          * Catastrophic error.  Mark our pack as
1551                                          * invalid.
1552                                          */
1553                                         /* XXX See if this is really a media
1554                                          *     change first.
1555                                          */
1556                                         xpt_print_path(periph->path);
1557                                         printf("Invalidating pack\n");
1558                                         softc->flags |= DA_FLAG_PACK_INVALID;
1559                                 }
1560
1561                                 /*
1562                                  * return all queued I/O with EIO, so that
1563                                  * the client can retry these I/Os in the
1564                                  * proper order should it attempt to recover.
1565                                  */
1566                                 while ((q_bp = bufq_first(&softc->buf_queue))
1567                                         != NULL) {
1568                                         bufq_remove(&softc->buf_queue, q_bp);
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_bp);
1573                                 }
1574                                 splx(s);
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                 oldspl = splcam();
1601                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1602                 splx(oldspl);
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(bp);
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                         snprintf(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                                         snprintf(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                                                 printf("got CAM status %#x\n",
1704                                                        done_ccb->ccb_h.status);
1705                                         }
1706
1707                                         xpt_print_path(periph->path);
1708                                         printf("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                 free(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,&softc->sysctl_task);
1726                 }
1727                 softc->state = DA_STATE_NORMAL;         
1728                 /*
1729                  * Since our peripheral may be invalidated by an error
1730                  * above or an external event, we must release our CCB
1731                  * before releasing the probe lock on the peripheral.
1732                  * The peripheral will only go away once the last lock
1733                  * is removed, and we need it around for the CCB release
1734                  * operation.
1735                  */
1736                 xpt_release_ccb(done_ccb);
1737                 cam_periph_unlock(periph);
1738                 return;
1739         }
1740         case DA_CCB_WAITING:
1741         {
1742                 /* Caller will release the CCB */
1743                 wakeup(&done_ccb->ccb_h.cbfcnp);
1744                 return;
1745         }
1746         case DA_CCB_DUMP:
1747                 /* No-op.  We're polling */
1748                 return;
1749         default:
1750                 break;
1751         }
1752         xpt_release_ccb(done_ccb);
1753 }
1754
1755 static int
1756 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1757 {
1758         struct da_softc   *softc;
1759         struct cam_periph *periph;
1760         int error;
1761
1762         periph = xpt_path_periph(ccb->ccb_h.path);
1763         softc = (struct da_softc *)periph->softc;
1764
1765         /*
1766          * Automatically detect devices that do not support
1767          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1768          */
1769         error = 0;
1770         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1771                 error = cmd6workaround(ccb);
1772         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1773                    CAM_SCSI_STATUS_ERROR)
1774          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1775          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1776          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1777          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1778                 int sense_key, error_code, asc, ascq;
1779
1780                 scsi_extract_sense(&ccb->csio.sense_data,
1781                                    &error_code, &sense_key, &asc, &ascq);
1782                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1783                         error = cmd6workaround(ccb);
1784         }
1785         if (error == ERESTART)
1786                 return (ERESTART);
1787
1788         /*
1789          * XXX
1790          * Until we have a better way of doing pack validation,
1791          * don't treat UAs as errors.
1792          */
1793         sense_flags |= SF_RETRY_UA;
1794         return(cam_periph_error(ccb, cam_flags, sense_flags,
1795                                 &softc->saved_ccb));
1796 }
1797
1798 static void
1799 daprevent(struct cam_periph *periph, int action)
1800 {
1801         struct  da_softc *softc;
1802         union   ccb *ccb;               
1803         int     error;
1804                 
1805         softc = (struct da_softc *)periph->softc;
1806
1807         if (((action == PR_ALLOW)
1808           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1809          || ((action == PR_PREVENT)
1810           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1811                 return;
1812         }
1813
1814         ccb = cam_periph_getccb(periph, /*priority*/1);
1815
1816         scsi_prevent(&ccb->csio,
1817                      /*retries*/1,
1818                      /*cbcfp*/dadone,
1819                      MSG_SIMPLE_Q_TAG,
1820                      action,
1821                      SSD_FULL_SIZE,
1822                      5000);
1823
1824         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1825                                   /*sense_flags*/0, &softc->device_stats);
1826
1827         if (error == 0) {
1828                 if (action == PR_ALLOW)
1829                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1830                 else
1831                         softc->flags |= DA_FLAG_PACK_LOCKED;
1832         }
1833
1834         xpt_release_ccb(ccb);
1835 }
1836
1837 static void
1838 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1839 {
1840         struct ccb_calc_geometry ccg;
1841         struct da_softc *softc;
1842         struct disk_params *dp;
1843
1844         softc = (struct da_softc *)periph->softc;
1845
1846         dp = &softc->params;
1847         dp->secsize = scsi_4btoul(rdcap->length);
1848         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1849         /*
1850          * Have the controller provide us with a geometry
1851          * for this disk.  The only time the geometry
1852          * matters is when we boot and the controller
1853          * is the only one knowledgeable enough to come
1854          * up with something that will make this a bootable
1855          * device.
1856          */
1857         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1858         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1859         ccg.block_size = dp->secsize;
1860         ccg.volume_size = dp->sectors;
1861         ccg.heads = 0;
1862         ccg.secs_per_track = 0;
1863         ccg.cylinders = 0;
1864         xpt_action((union ccb*)&ccg);
1865         dp->heads = ccg.heads;
1866         dp->secs_per_track = ccg.secs_per_track;
1867         dp->cylinders = ccg.cylinders;
1868 }
1869
1870 static void
1871 dasendorderedtag(void *arg)
1872 {
1873         struct da_softc *softc;
1874         int s;
1875
1876         for (softc = SLIST_FIRST(&softc_list);
1877              softc != NULL;
1878              softc = SLIST_NEXT(softc, links)) {
1879                 s = splsoftcam();
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                 splx(s);
1889         }
1890         /* Queue us up again */
1891         timeout(dasendorderedtag, NULL,
1892                 (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL);
1893 }
1894
1895 /*
1896  * Step through all DA peripheral drivers, and if the device is still open,
1897  * sync the disk cache to physical media.
1898  */
1899 static void
1900 dashutdown(void * arg, int howto)
1901 {
1902         struct cam_periph *periph;
1903         struct da_softc *softc;
1904
1905         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1906              periph = TAILQ_NEXT(periph, unit_links)) {
1907                 union ccb ccb;
1908                 softc = (struct da_softc *)periph->softc;
1909
1910                 /*
1911                  * We only sync the cache if the drive is still open, and
1912                  * if the drive is capable of it..
1913                  */
1914                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1915                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1916                         continue;
1917
1918                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1919
1920                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1921                 scsi_synchronize_cache(&ccb.csio,
1922                                        /*retries*/1,
1923                                        /*cbfcnp*/dadone,
1924                                        MSG_SIMPLE_Q_TAG,
1925                                        /*begin_lba*/0, /* whole disk */
1926                                        /*lb_count*/0,
1927                                        SSD_FULL_SIZE,
1928                                        5 * 60 * 1000);
1929
1930                 xpt_polled_action(&ccb);
1931
1932                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1933                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1934                              CAM_SCSI_STATUS_ERROR)
1935                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1936                                 int error_code, sense_key, asc, ascq;
1937
1938                                 scsi_extract_sense(&ccb.csio.sense_data,
1939                                                    &error_code, &sense_key,
1940                                                    &asc, &ascq);
1941
1942                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1943                                         scsi_sense_print(&ccb.csio);
1944                         } else {
1945                                 xpt_print_path(periph->path);
1946                                 printf("Synchronize cache failed, status "
1947                                        "== 0x%x, scsi status == 0x%x\n",
1948                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1949                         }
1950                 }
1951
1952                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1953                         cam_release_devq(ccb.ccb_h.path,
1954                                          /*relsim_flags*/0,
1955                                          /*reduction*/0,
1956                                          /*timeout*/0,
1957                                          /*getcount_only*/0);
1958
1959         }
1960 }
1961
1962 #else /* !_KERNEL */
1963
1964 /*
1965  * XXX This is only left out of the kernel build to silence warnings.  If,
1966  * for some reason this function is used in the kernel, the ifdefs should
1967  * be moved so it is included both in the kernel and userland.
1968  */
1969 void
1970 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1971                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1972                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1973                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1974                  u_int32_t timeout)
1975 {
1976         struct scsi_format_unit *scsi_cmd;
1977
1978         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1979         scsi_cmd->opcode = FORMAT_UNIT;
1980         scsi_cmd->byte2 = byte2;
1981         scsi_ulto2b(ileave, scsi_cmd->interleave);
1982
1983         cam_fill_csio(csio,
1984                       retries,
1985                       cbfcnp,
1986                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1987                       tag_action,
1988                       data_ptr,
1989                       dxfer_len,
1990                       sense_len,
1991                       sizeof(*scsi_cmd),
1992                       timeout);
1993 }
1994
1995 #endif /* _KERNEL */