2 * Implementation of SCSI Direct Access Peripheral driver for CAM.
4 * Copyright (c) 1997 Justin T. Gibbs.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
28 * $FreeBSD: src/sys/cam/scsi/scsi_da.c,v 1.42.2.46 2003/10/21 22:18:19 thomas Exp $
31 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
38 #include <sys/sysctl.h>
39 #include <sys/taskqueue.h>
43 #include <sys/devicestat.h>
45 #include <sys/dtype.h>
46 #include <sys/eventhandler.h>
47 #include <sys/malloc.h>
64 #include <sys/camlib.h>
66 #include "../cam_ccb.h"
67 #include "../cam_extend.h"
68 #include "../cam_periph.h"
69 #include "../cam_xpt_periph.h"
70 #include "../cam_sim.h"
72 #include "scsi_daio.h"
73 #include "scsi_message.h"
87 DA_FLAG_PACK_INVALID
= 0x001,
88 DA_FLAG_NEW_PACK
= 0x002,
89 DA_FLAG_PACK_LOCKED
= 0x004,
90 DA_FLAG_PACK_REMOVABLE
= 0x008,
91 DA_FLAG_TAGGED_QUEUING
= 0x010,
92 DA_FLAG_RETRY_UA
= 0x080,
94 DA_FLAG_SCTX_INIT
= 0x200,
95 DA_FLAG_RD_LIMIT
= 0x400,
96 DA_FLAG_WR_LIMIT
= 0x800,
97 DA_FLAG_CAN_TRIM
= 0x1000,
98 DA_FLAG_CAP_MUTE
= 0x2000
103 DA_Q_NO_SYNC_CACHE
= 0x01,
104 DA_Q_NO_6_BYTE
= 0x02,
105 DA_Q_NO_PREVENT
= 0x04
109 DA_CCB_POLLED
= 0x00,
111 DA_CCB_PROBE2
= 0x02,
112 DA_CCB_BUFFER_IO
= 0x03,
113 DA_CCB_WAITING
= 0x04,
116 DA_CCB_TYPE_MASK
= 0x0F,
117 DA_CCB_RETRY_UA
= 0x10
120 /* Offsets into our private area for storing information */
121 #define ccb_state ppriv_field0
122 #define ccb_bio ppriv_ptr1
127 u_int8_t secs_per_track
;
128 u_int32_t secsize
; /* Number of bytes/sector */
129 u_int64_t sectors
; /* total number sectors */
132 #define TRIM_MAX_BLOCKS 8
133 #define TRIM_MAX_RANGES TRIM_MAX_BLOCKS * 64
134 struct trim_request
{
135 uint8_t data
[TRIM_MAX_RANGES
* 8];
136 struct bio
*bios
[TRIM_MAX_RANGES
];
140 struct bio_queue_head bio_queue_rd
;
141 struct bio_queue_head bio_queue_wr
;
142 struct bio_queue_head bio_queue_trim
;
143 struct devstat device_stats
;
144 SLIST_ENTRY(da_softc
) links
;
145 LIST_HEAD(, ccb_hdr
) pending_ccbs
;
149 int minimum_cmd_size
;
150 int outstanding_cmds_rd
; /* outstanding read requests */
151 int outstanding_cmds_wr
; /* outstanding write requests */
153 long tps_rd
; /* read bandwidth exponential/tick */
154 long tps_wr
; /* write bandwidth exponential/tick */
158 struct disk_params params
;
161 struct task sysctl_task
;
162 struct sysctl_ctx_list sysctl_ctx
;
163 struct sysctl_oid
*sysctl_tree
;
164 struct trim_request trim_req
;
167 struct da_quirk_entry
{
168 struct scsi_inquiry_pattern inq_pat
;
172 static const char quantum
[] = "QUANTUM";
173 static const char microp
[] = "MICROP";
175 static struct da_quirk_entry da_quirk_table
[] =
177 /* SPI, FC devices */
180 * Fujitsu M2513A MO drives.
181 * Tested devices: M2513A2 firmware versions 1200 & 1300.
182 * (dip switch selects whether T_DIRECT or T_OPTICAL device)
183 * Reported by: W.Scholten <whs@xs4all.nl>
185 {T_DIRECT
, SIP_MEDIA_REMOVABLE
, "FUJITSU", "M2513A", "*"},
186 /*quirks*/ DA_Q_NO_SYNC_CACHE
190 {T_OPTICAL
, SIP_MEDIA_REMOVABLE
, "FUJITSU", "M2513A", "*"},
191 /*quirks*/ DA_Q_NO_SYNC_CACHE
195 * This particular Fujitsu drive doesn't like the
196 * synchronize cache command.
197 * Reported by: Tom Jackson <toj@gorilla.net>
199 {T_DIRECT
, SIP_MEDIA_FIXED
, "FUJITSU", "M2954*", "*"},
200 /*quirks*/ DA_Q_NO_SYNC_CACHE
204 * This drive doesn't like the synchronize cache command
205 * either. Reported by: Matthew Jacob <mjacob@feral.com>
206 * in NetBSD PR kern/6027, August 24, 1998.
208 {T_DIRECT
, SIP_MEDIA_FIXED
, microp
, "2217*", "*"},
209 /*quirks*/ DA_Q_NO_SYNC_CACHE
213 * This drive doesn't like the synchronize cache command
214 * either. Reported by: Hellmuth Michaelis (hm@kts.org)
217 {T_DIRECT
, SIP_MEDIA_FIXED
, microp
, "2112*", "*"},
218 /*quirks*/ DA_Q_NO_SYNC_CACHE
222 * Doesn't like the synchronize cache command.
223 * Reported by: Blaz Zupan <blaz@gold.amis.net>
225 {T_DIRECT
, SIP_MEDIA_FIXED
, "NEC", "D3847*", "*"},
226 /*quirks*/ DA_Q_NO_SYNC_CACHE
230 * Doesn't like the synchronize cache command.
231 * Reported by: Blaz Zupan <blaz@gold.amis.net>
233 {T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "MAVERICK 540S", "*"},
234 /*quirks*/ DA_Q_NO_SYNC_CACHE
238 * Doesn't like the synchronize cache command.
240 {T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "LPS525S", "*"},
241 /*quirks*/ DA_Q_NO_SYNC_CACHE
245 * Doesn't like the synchronize cache command.
246 * Reported by: walter@pelissero.de
248 {T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "LPS540S", "*"},
249 /*quirks*/ DA_Q_NO_SYNC_CACHE
253 * Doesn't work correctly with 6 byte reads/writes.
254 * Returns illegal request, and points to byte 9 of the
256 * Reported by: Adam McDougall <bsdx@spawnet.com>
258 {T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "VIKING 4*", "*"},
259 /*quirks*/ DA_Q_NO_6_BYTE
263 {T_DIRECT
, SIP_MEDIA_FIXED
, quantum
, "VIKING 2*", "*"},
264 /*quirks*/ DA_Q_NO_6_BYTE
268 * Doesn't like the synchronize cache command.
269 * Reported by: walter@pelissero.de
271 {T_DIRECT
, SIP_MEDIA_FIXED
, "CONNER", "CP3500*", "*"},
272 /*quirks*/ DA_Q_NO_SYNC_CACHE
276 * The CISS RAID controllers do not support SYNC_CACHE
278 {T_DIRECT
, SIP_MEDIA_FIXED
, "COMPAQ", "RAID*", "*"},
279 /*quirks*/ DA_Q_NO_SYNC_CACHE
283 * The same goes for the mly(4) controllers
285 {T_DIRECT
, SIP_MEDIA_FIXED
, "MLY*", "*", "MYLX"},
286 /*quirks*/ DA_Q_NO_SYNC_CACHE
289 * USB mass storage devices supported by umass(4)
291 * NOTE: USB attachments automatically set DA_Q_NO_SYNC_CACHE so
292 * it does not have to be specified here.
296 * Creative Nomad MUVO mp3 player (USB)
299 {T_DIRECT
, SIP_MEDIA_REMOVABLE
, "CREATIVE", "NOMAD_MUVO", "*"},
300 /*quirks*/ DA_Q_NO_PREVENT
304 * Sigmatel USB Flash MP3 Player
307 {T_DIRECT
, SIP_MEDIA_REMOVABLE
, "SigmaTel", "MSCN", "*"},
308 /*quirks*/ DA_Q_NO_PREVENT
312 * SEAGRAND NP-900 MP3 Player
315 {T_DIRECT
, SIP_MEDIA_REMOVABLE
, "SEAGRAND", "NP-900*", "*"},
316 /*quirks*/ DA_Q_NO_PREVENT
320 * Creative MUVO Slim mp3 player (USB)
323 {T_DIRECT
, SIP_MEDIA_REMOVABLE
, "CREATIVE", "MuVo Slim",
324 "*"}, /*quirks*/ DA_Q_NO_PREVENT
328 * Philips USB Key Audio KEY013
331 {T_DIRECT
, SIP_MEDIA_REMOVABLE
, "PHILIPS", "Key*", "*"},
332 /*quirks*/ DA_Q_NO_PREVENT
336 static d_open_t daopen
;
337 static d_close_t daclose
;
338 static d_strategy_t dastrategy
;
339 static d_dump_t dadump
;
340 static d_ioctl_t daioctl
;
341 static periph_init_t dainit
;
342 static void daasync(void *callback_arg
, u_int32_t code
,
343 struct cam_path
*path
, void *arg
);
344 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS
);
345 static periph_ctor_t daregister
;
346 static periph_dtor_t dacleanup
;
347 static periph_start_t dastart
;
348 static periph_oninv_t daoninvalidate
;
349 static void dadone(struct cam_periph
*periph
,
350 union ccb
*done_ccb
);
351 static int daerror(union ccb
*ccb
, u_int32_t cam_flags
,
352 u_int32_t sense_flags
);
353 static void daprevent(struct cam_periph
*periph
, int action
);
354 static int dagetcapacity(struct cam_periph
*periph
, int ccbflags
);
355 static int dacheckmedia(struct cam_periph
*periph
);
356 static void dasetgeom(struct cam_periph
*periph
, uint32_t block_len
,
358 static void daflushbioq(struct bio_queue_head
*bioq
, int error
);
359 static void dashutdown(void *arg
, int howto
);
361 #ifndef DA_DEFAULT_TIMEOUT
362 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */
365 #ifndef DA_DEFAULT_RETRY
366 #define DA_DEFAULT_RETRY 4
369 __read_mostly
int da_retry_count
= DA_DEFAULT_RETRY
;
370 __read_mostly
int da_default_timeout
= DA_DEFAULT_TIMEOUT
;
371 __read_mostly
static int da_balance_enable
= 1;
372 __read_mostly
static int da_balance_ratio
= 100; /* read-to-write */
373 __read_mostly
static int da_balance_debug
= 0;
375 SYSCTL_NODE(_kern_cam
, OID_AUTO
, da
, CTLFLAG_RD
, 0,
376 "CAM Direct Access Disk driver");
377 SYSCTL_INT(_kern_cam_da
, OID_AUTO
, retry_count
, CTLFLAG_RW
,
378 &da_retry_count
, 0, "Normal I/O retry count");
379 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count
);
380 SYSCTL_INT(_kern_cam_da
, OID_AUTO
, default_timeout
, CTLFLAG_RW
,
381 &da_default_timeout
, 0, "Normal I/O timeout (in seconds)");
382 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout
);
384 SYSCTL_INT(_kern_cam_da
, OID_AUTO
, balance_enable
, CTLFLAG_RW
,
385 &da_balance_enable
, 0, "Enable tps balancing");
386 SYSCTL_INT(_kern_cam_da
, OID_AUTO
, balance_ratio
, CTLFLAG_RW
,
387 &da_balance_ratio
, 0, "Set read-to-write ratio 100=1:1");
388 SYSCTL_INT(_kern_cam_da
, OID_AUTO
, balance_debug
, CTLFLAG_RW
,
389 &da_balance_debug
, 0, "Enable tps balance debugging");
391 static struct periph_driver dadriver
=
394 TAILQ_HEAD_INITIALIZER(dadriver
.units
), /* generation */ 0
397 PERIPHDRIVER_DECLARE(da
, dadriver
);
399 static struct dev_ops da_ops
= {
400 { "da", 0, D_DISK
| D_MPSAFE
},
404 .d_write
= physwrite
,
405 .d_strategy
= dastrategy
,
410 static struct extend_array
*daperiphs
;
412 MALLOC_DEFINE(M_SCSIDA
, "scsi_da", "scsi_da buffers");
415 daioctl(struct dev_ioctl_args
*ap
)
420 struct cam_periph
*periph
;
423 off_t
*del_num
= (off_t
*)ap
->a_data
;
427 cdev_t dev
= ap
->a_head
.a_dev
;
431 periph
= cam_extend_get(daperiphs
, unit
);
439 bytes_left
= del_num
[1];
440 bytes_start
= del_num
[0];
442 /* TRIM occurs on 512-byte sectors. */
443 KKASSERT((bytes_left
% 512) == 0);
444 KKASSERT((bytes_start
% 512) == 0);
447 /* Break TRIM up into int-sized commands because of b_bcount */
451 * Rather than than squezing out more blocks in b_bcount
452 * and having to break up the TRIM request in da_start(),
453 * we ensure we can always TRIM this many bytes with one
454 * TRIM command (this happens if the device only
455 * supports one TRIM block).
457 * With min TRIM blksize of 1, TRIM command free
458 * 4194240 blks(64*65535): each LBA range can address
459 * 65535 blks and there 64 such ranges in a 512-byte
460 * block. And, 4194240 * 512 = 0x7FFF8000
463 byte_count
= MIN(bytes_left
,0x7FFF8000);
464 bp
= getnewbuf(0, 0, 0, 1);
466 bp
->b_cmd
= BUF_CMD_FREEBLKS
;
467 bp
->b_bio1
.bio_offset
= bytes_start
;
468 bp
->b_bcount
= byte_count
;
469 bp
->b_bio1
.bio_flags
|= BIO_SYNC
;
470 bp
->b_bio1
.bio_done
= biodone_sync
;
472 dev_dstrategy(ap
->a_head
.a_dev
, &bp
->b_bio1
);
474 if (biowait(&bp
->b_bio1
, "TRIM")) {
475 kprintf("Error:%d\n", bp
->b_error
);
477 return(bp
->b_error
? bp
->b_error
: EIO
);
480 bytes_left
-= byte_count
;
481 bytes_start
+= byte_count
;
493 daopen(struct dev_open_args
*ap
)
495 cdev_t dev
= ap
->a_head
.a_dev
;
496 struct cam_periph
*periph
;
497 struct da_softc
*softc
;
498 struct disk_info info
;
503 * Disallow CAM access if RESTRICTEDROOT
505 if (caps_priv_check_self(SYSCAP_RESTRICTEDROOT
))
509 periph
= cam_extend_get(daperiphs
, unit
);
510 if (periph
== NULL
) {
514 if (cam_periph_acquire(periph
) != CAM_REQ_CMP
) {
518 cam_periph_lock(periph
);
519 if ((error
= cam_periph_hold(periph
, PCATCH
)) != 0) {
520 cam_periph_unlock(periph
);
521 cam_periph_release(periph
);
525 unit
= periph
->unit_number
;
526 softc
= (struct da_softc
*)periph
->softc
;
528 CAM_DEBUG(periph
->path
, CAM_DEBUG_TRACE
,
529 ("daopen: dev=%s (unit %d)\n", devtoname(dev
),
532 if ((softc
->flags
& DA_FLAG_PACK_INVALID
) != 0) {
533 /* Invalidate our pack information. */
534 disk_invalidate(&softc
->disk
);
535 softc
->flags
&= ~DA_FLAG_PACK_INVALID
;
538 error
= dacheckmedia(periph
);
539 softc
->flags
|= DA_FLAG_OPEN
;
542 struct ccb_getdev
*cgd
;
544 /* Build disk information structure */
545 bzero(&info
, sizeof(info
));
546 info
.d_type
= DTYPE_SCSI
;
549 * Grab the inquiry data to get the vendor and product names.
550 * Put them in the typename and packname for the label.
552 cgd
= &xpt_alloc_ccb()->cgd
;
553 xpt_setup_ccb(&cgd
->ccb_h
, periph
->path
, /*priority*/ 1);
554 cgd
->ccb_h
.func_code
= XPT_GDEV_TYPE
;
555 xpt_action((union ccb
*)cgd
);
556 xpt_free_ccb(&cgd
->ccb_h
);
559 * Check to see whether or not the blocksize is set yet.
560 * If it isn't, set it and then clear the blocksize
561 * unavailable flag for the device statistics.
563 if ((softc
->device_stats
.flags
& DEVSTAT_BS_UNAVAILABLE
) != 0){
564 softc
->device_stats
.block_size
= softc
->params
.secsize
;
565 softc
->device_stats
.flags
&= ~DEVSTAT_BS_UNAVAILABLE
;
570 softc
->flags
&= ~DA_FLAG_CAP_MUTE
;
571 if ((softc
->flags
& DA_FLAG_PACK_REMOVABLE
) != 0 &&
572 (softc
->quirks
& DA_Q_NO_PREVENT
) == 0)
573 daprevent(periph
, PR_PREVENT
);
575 softc
->flags
|= DA_FLAG_CAP_MUTE
;
576 softc
->flags
&= ~DA_FLAG_OPEN
;
577 cam_periph_release(periph
);
579 cam_periph_unhold(periph
, 1);
584 daclose(struct dev_close_args
*ap
)
586 cdev_t dev
= ap
->a_head
.a_dev
;
587 struct cam_periph
*periph
;
588 struct da_softc
*softc
;
593 periph
= cam_extend_get(daperiphs
, unit
);
597 cam_periph_lock(periph
);
598 if ((error
= cam_periph_hold(periph
, 0)) != 0) {
599 cam_periph_unlock(periph
);
600 cam_periph_release(periph
);
604 softc
= (struct da_softc
*)periph
->softc
;
606 if ((softc
->quirks
& DA_Q_NO_SYNC_CACHE
) == 0) {
609 ccb
= cam_periph_getccb(periph
, /*priority*/1);
610 ccb
->ccb_h
.ccb_state
= DA_CCB_POLLED
;
612 scsi_synchronize_cache(&ccb
->csio
,
616 /*begin_lba*/0,/* Cover the whole disk */
621 cam_periph_runccb(ccb
, /*error_routine*/NULL
, /*cam_flags*/0,
622 /*sense_flags*/SF_RETRY_UA
,
623 &softc
->device_stats
);
625 if ((ccb
->ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
626 if ((ccb
->ccb_h
.status
& CAM_STATUS_MASK
) ==
627 CAM_SCSI_STATUS_ERROR
) {
629 int sense_key
, error_code
;
631 scsi_extract_sense(&ccb
->csio
.sense_data
,
635 if (sense_key
!= SSD_KEY_ILLEGAL_REQUEST
)
636 scsi_sense_print(&ccb
->csio
);
638 xpt_print(periph
->path
, "Synchronize cache "
639 "failed, status == 0x%x, scsi status == "
640 "0x%x\n", ccb
->csio
.ccb_h
.status
,
641 ccb
->csio
.scsi_status
);
645 if ((ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0)
646 cam_release_devq(ccb
->ccb_h
.path
,
652 xpt_release_ccb(ccb
);
656 if ((softc
->flags
& DA_FLAG_PACK_REMOVABLE
) != 0) {
657 if ((softc
->quirks
& DA_Q_NO_PREVENT
) == 0)
658 daprevent(periph
, PR_ALLOW
);
660 * If we've got removeable media, mark the blocksize as
661 * unavailable, since it could change when new media is
664 softc
->device_stats
.flags
|= DEVSTAT_BS_UNAVAILABLE
;
668 * Don't compound any ref counting software bugs with more.
670 if (softc
->flags
& DA_FLAG_OPEN
) {
671 softc
->flags
&= ~DA_FLAG_OPEN
;
672 cam_periph_release(periph
);
674 xpt_print(periph
->path
,
675 "daclose() called on an already closed device!\n");
677 cam_periph_unhold(periph
, 1);
682 * Actually translate the requested transfer into one the physical driver
683 * can understand. The transfer is described by a buf and will include
684 * only one physical transfer.
687 dastrategy(struct dev_strategy_args
*ap
)
689 cdev_t dev
= ap
->a_head
.a_dev
;
690 struct bio
*bio
= ap
->a_bio
;
691 struct buf
*bp
= bio
->bio_buf
;
692 struct cam_periph
*periph
;
693 struct da_softc
*softc
;
697 periph
= cam_extend_get(daperiphs
, unit
);
698 if (periph
== NULL
) {
702 softc
= (struct da_softc
*)periph
->softc
;
704 cam_periph_lock(periph
);
708 * check it's not too big a transfer for our adapter
710 scsi_minphys(bp
, &sd_switch
);
714 * Mask interrupts so that the pack cannot be invalidated until
715 * after we are in the queue. Otherwise, we might not properly
716 * clean up one of the buffers.
720 * If the device has been made invalid, error out
722 if ((softc
->flags
& DA_FLAG_PACK_INVALID
)) {
723 cam_periph_unlock(periph
);
729 * Place it in the queue of disk activities for this disk
731 if (bp
->b_cmd
== BUF_CMD_WRITE
|| bp
->b_cmd
== BUF_CMD_FLUSH
)
732 bioqdisksort(&softc
->bio_queue_wr
, bio
);
733 else if (bp
->b_cmd
== BUF_CMD_FREEBLKS
)
734 bioqdisksort(&softc
->bio_queue_trim
, bio
);
736 bioqdisksort(&softc
->bio_queue_rd
, bio
);
739 * Schedule ourselves for performing the work.
741 xpt_schedule(periph
, /* XXX priority */1);
742 cam_periph_unlock(periph
);
746 bp
->b_flags
|= B_ERROR
;
749 * Correctly set the buf to indicate a completed xfer
751 bp
->b_resid
= bp
->b_bcount
;
757 dadump(struct dev_dump_args
*ap
)
759 cdev_t dev
= ap
->a_head
.a_dev
;
760 struct cam_periph
*periph
;
761 struct da_softc
*softc
;
764 struct ccb_scsiio
*csio
;
767 periph
= cam_extend_get(daperiphs
, unit
);
771 softc
= (struct da_softc
*)periph
->softc
;
772 cam_periph_lock(periph
);
773 secsize
= softc
->params
.secsize
; /* XXX: or ap->a_secsize? */
775 if ((softc
->flags
& DA_FLAG_PACK_INVALID
) != 0) {
776 cam_periph_unlock(periph
);
780 csio
= &xpt_alloc_ccb()->csio
;
783 * because length == 0 means we are supposed to flush cache, we only
784 * try to write something if length > 0.
786 if (ap
->a_length
> 0) {
787 xpt_setup_ccb(&csio
->ccb_h
, periph
->path
, /*priority*/1);
788 csio
->ccb_h
.flags
|= CAM_POLLED
;
789 csio
->ccb_h
.ccb_state
= DA_CCB_DUMP
;
790 scsi_read_write(csio
,
796 /*minimum_cmd_size*/ softc
->minimum_cmd_size
,
797 ap
->a_offset
/ secsize
,
798 ap
->a_length
/ secsize
,
799 /*data_ptr*/(u_int8_t
*) ap
->a_virtual
,
800 /*dxfer_len*/ap
->a_length
,
801 /*sense_len*/SSD_FULL_SIZE
,
802 DA_DEFAULT_TIMEOUT
* 1000);
803 xpt_polled_action((union ccb
*)csio
);
805 if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
806 kprintf("Aborting dump due to I/O error.\n");
807 if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) ==
808 CAM_SCSI_STATUS_ERROR
)
809 scsi_sense_print(csio
);
811 kprintf("status == 0x%x, scsi status == 0x%x\n",
812 csio
->ccb_h
.status
, csio
->scsi_status
);
813 cam_periph_unlock(periph
);
814 xpt_free_ccb(&csio
->ccb_h
);
821 * Sync the disk cache contents to the physical media.
823 if ((softc
->quirks
& DA_Q_NO_SYNC_CACHE
) == 0) {
825 xpt_setup_ccb(&csio
->ccb_h
, periph
->path
, /*priority*/1);
826 csio
->ccb_h
.ccb_state
= DA_CCB_DUMP
;
827 scsi_synchronize_cache(csio
,
831 /*begin_lba*/0,/* Cover the whole disk */
835 xpt_polled_action((union ccb
*)csio
);
837 if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
838 if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) ==
839 CAM_SCSI_STATUS_ERROR
) {
841 int sense_key
, error_code
;
843 scsi_extract_sense(&csio
->sense_data
,
847 if (sense_key
!= SSD_KEY_ILLEGAL_REQUEST
)
848 scsi_sense_print(csio
);
850 xpt_print(periph
->path
, "Synchronize cache "
851 "failed, status == 0x%x, scsi status == "
853 csio
->ccb_h
.status
, csio
->scsi_status
);
858 cam_periph_unlock(periph
);
859 xpt_free_ccb(&csio
->ccb_h
);
870 * Create our extend array for storing the devices we attach to.
872 daperiphs
= cam_extend_new();
873 if (daperiphs
== NULL
) {
874 kprintf("da: Failed to alloc extend array!\n");
879 * Install a global async callback. This callback will
880 * receive async callbacks like "new device found".
882 status
= xpt_register_async(AC_FOUND_DEVICE
, daasync
, NULL
, NULL
);
884 if (status
!= CAM_REQ_CMP
) {
885 kprintf("da: Failed to attach master async callback "
886 "due to status 0x%x!\n", status
);
888 /* Register our shutdown event handler */
889 if ((EVENTHANDLER_REGISTER(shutdown_post_sync
, dashutdown
,
890 NULL
, SHUTDOWN_PRI_SECOND
)) == NULL
)
891 kprintf("%s: shutdown event registration failed!\n",
897 daoninvalidate(struct cam_periph
*periph
)
899 struct da_softc
*softc
;
901 softc
= (struct da_softc
*)periph
->softc
;
904 * De-register any async callbacks.
906 xpt_register_async(0, daasync
, periph
, periph
->path
);
908 softc
->flags
|= DA_FLAG_PACK_INVALID
;
911 * Return all queued I/O with ENXIO.
912 * XXX Handle any transactions queued to the card
913 * with XPT_ABORT_CCB.
915 daflushbioq(&softc
->bio_queue_trim
, ENXIO
);
916 daflushbioq(&softc
->bio_queue_wr
, ENXIO
);
917 daflushbioq(&softc
->bio_queue_rd
, ENXIO
);
918 xpt_print(periph
->path
, "lost device\n");
922 daflushbioq(struct bio_queue_head
*bioq
, int error
)
927 while ((q_bio
= bioq_first(bioq
)) != NULL
){
928 bioq_remove(bioq
, q_bio
);
929 q_bp
= q_bio
->bio_buf
;
930 q_bp
->b_resid
= q_bp
->b_bcount
;
931 q_bp
->b_error
= error
;
932 q_bp
->b_flags
|= B_ERROR
;
938 dacleanup(struct cam_periph
*periph
)
940 struct da_softc
*softc
;
942 softc
= (struct da_softc
*)periph
->softc
;
944 devstat_remove_entry(&softc
->device_stats
);
945 cam_extend_release(daperiphs
, periph
->unit_number
);
946 xpt_print(periph
->path
, "removing device entry\n");
948 * If we can't free the sysctl tree, oh well...
950 if ((softc
->flags
& DA_FLAG_SCTX_INIT
) != 0
951 && sysctl_ctx_free(&softc
->sysctl_ctx
) != 0) {
952 xpt_print(periph
->path
, "can't remove sysctl context\n");
954 periph
->softc
= NULL
;
955 if (softc
->disk
.d_rawdev
) {
956 cam_periph_unlock(periph
);
957 disk_destroy(&softc
->disk
);
958 cam_periph_lock(periph
);
961 kfree(softc
, M_DEVBUF
);
965 daasync(void *callback_arg
, u_int32_t code
,
966 struct cam_path
*path
, void *arg
)
968 struct cam_periph
*periph
;
970 periph
= (struct cam_periph
*)callback_arg
;
973 case AC_FOUND_DEVICE
:
975 struct ccb_getdev
*cgd
;
978 cgd
= (struct ccb_getdev
*)arg
;
982 if (SID_TYPE(&cgd
->inq_data
) != T_DIRECT
983 && SID_TYPE(&cgd
->inq_data
) != T_RBC
984 && SID_TYPE(&cgd
->inq_data
) != T_OPTICAL
)
988 * Don't complain if a valid peripheral is already attached.
990 periph
= cam_periph_find(cgd
->ccb_h
.path
, "da");
991 if (periph
&& (periph
->flags
& CAM_PERIPH_INVALID
) == 0)
995 * Allocate a peripheral instance for
996 * this device and start the probe
999 status
= cam_periph_alloc(daregister
, daoninvalidate
,
1001 "da", CAM_PERIPH_BIO
,
1002 cgd
->ccb_h
.path
, daasync
,
1003 AC_FOUND_DEVICE
, cgd
);
1005 if (status
!= CAM_REQ_CMP
&& status
!= CAM_REQ_INPROG
) {
1006 kprintf("%s: Unable to attach to new device "
1007 "due to status 0x%x\n", __func__
, status
);
1014 struct da_softc
*softc
;
1015 struct ccb_hdr
*ccbh
;
1017 softc
= (struct da_softc
*)periph
->softc
;
1019 * Don't fail on the expected unit attention
1022 softc
->flags
|= DA_FLAG_RETRY_UA
;
1023 LIST_FOREACH(ccbh
, &softc
->pending_ccbs
, periph_links
.le
)
1024 ccbh
->ccb_state
|= DA_CCB_RETRY_UA
;
1028 cam_periph_async(periph
, code
, path
, arg
);
1034 dasysctlinit(void *context
, int pending
)
1036 struct cam_periph
*periph
;
1037 struct da_softc
*softc
;
1038 char tmpstr
[80], tmpstr2
[80];
1040 periph
= (struct cam_periph
*)context
;
1041 if (cam_periph_acquire(periph
) != CAM_REQ_CMP
) {
1045 softc
= (struct da_softc
*)periph
->softc
;
1046 ksnprintf(tmpstr
, sizeof(tmpstr
),
1047 "CAM DA unit %d", periph
->unit_number
);
1048 ksnprintf(tmpstr2
, sizeof(tmpstr2
),
1049 "%d", periph
->unit_number
);
1051 sysctl_ctx_free(&softc
->sysctl_ctx
);
1052 sysctl_ctx_init(&softc
->sysctl_ctx
);
1053 softc
->flags
|= DA_FLAG_SCTX_INIT
;
1054 softc
->sysctl_tree
= SYSCTL_ADD_NODE(&softc
->sysctl_ctx
,
1055 SYSCTL_STATIC_CHILDREN(_kern_cam_da
), OID_AUTO
, tmpstr2
,
1056 CTLFLAG_RD
, 0, tmpstr
);
1057 if (softc
->sysctl_tree
== NULL
) {
1058 kprintf("%s: unable to allocate sysctl tree\n", __func__
);
1059 cam_periph_release(periph
);
1064 * Now register the sysctl handler, so the user can the value on
1067 SYSCTL_ADD_PROC(&softc
->sysctl_ctx
,SYSCTL_CHILDREN(softc
->sysctl_tree
),
1068 OID_AUTO
, "minimum_cmd_size", CTLTYPE_INT
| CTLFLAG_RW
,
1069 &softc
->minimum_cmd_size
, 0, dacmdsizesysctl
, "I",
1070 "Minimum CDB size");
1072 /* Only create the option if the device supports TRIM */
1073 if (softc
->disk
.d_info
.d_trimflag
) {
1074 SYSCTL_ADD_INT(&softc
->sysctl_ctx
,
1075 SYSCTL_CHILDREN(softc
->sysctl_tree
),
1079 &softc
->trim_enabled
,
1081 "Enable TRIM for this device (SSD))");
1084 cam_periph_release(periph
);
1088 dacmdsizesysctl(SYSCTL_HANDLER_ARGS
)
1092 value
= *(int *)arg1
;
1094 error
= sysctl_handle_int(oidp
, &value
, 0, req
);
1097 || (req
->newptr
== NULL
))
1101 * Acceptable values here are 6, 10 or 12, or 16.
1105 else if ((value
> 6)
1108 else if ((value
> 10)
1111 else if (value
> 12)
1114 *(int *)arg1
= value
;
1120 daregister(struct cam_periph
*periph
, void *arg
)
1122 struct da_softc
*softc
;
1123 struct ccb_pathinq
*cpi
;
1124 struct ccb_getdev
*cgd
;
1128 cgd
= (struct ccb_getdev
*)arg
;
1129 if (periph
== NULL
) {
1130 kprintf("%s: periph was NULL!!\n", __func__
);
1131 return(CAM_REQ_CMP_ERR
);
1135 kprintf("%s: no getdev CCB, can't register device\n",
1137 return(CAM_REQ_CMP_ERR
);
1140 softc
= kmalloc(sizeof(*softc
), M_DEVBUF
, M_INTWAIT
| M_ZERO
);
1141 sysctl_ctx_init(&softc
->sysctl_ctx
);
1142 LIST_INIT(&softc
->pending_ccbs
);
1143 softc
->state
= DA_STATE_PROBE
;
1144 bioq_init(&softc
->bio_queue_trim
);
1145 bioq_init(&softc
->bio_queue_rd
);
1146 bioq_init(&softc
->bio_queue_wr
);
1147 if (SID_IS_REMOVABLE(&cgd
->inq_data
))
1148 softc
->flags
|= DA_FLAG_PACK_REMOVABLE
;
1149 if ((cgd
->inq_data
.flags
& SID_CmdQue
) != 0)
1150 softc
->flags
|= DA_FLAG_TAGGED_QUEUING
;
1152 /* Used to get TRIM status from AHCI driver */
1153 if (cgd
->inq_data
.vendor_specific1
[0] == 1) {
1155 * max number of lba ranges an SSD can handle in a single
1156 * TRIM command. vendor_specific1[1] is the num of 512-byte
1157 * blocks the SSD reports that can be passed in a TRIM cmd.
1159 softc
->trim_max_ranges
=
1160 min(cgd
->inq_data
.vendor_specific1
[1] * 64, TRIM_MAX_RANGES
);
1163 periph
->softc
= softc
;
1165 cam_extend_set(daperiphs
, periph
->unit_number
, periph
);
1168 * See if this device has any quirks.
1170 match
= cam_quirkmatch((caddr_t
)&cgd
->inq_data
,
1171 (caddr_t
)da_quirk_table
,
1172 NELEM(da_quirk_table
),
1173 sizeof(*da_quirk_table
), scsi_inquiry_match
);
1176 softc
->quirks
= ((struct da_quirk_entry
*)match
)->quirks
;
1178 softc
->quirks
= DA_Q_NONE
;
1181 * Unconditionally disable the synchronize cache command for
1182 * usb attachments. It's just impossible to determine if the
1183 * device supports it or not and if it doesn't the port can
1186 if (strncmp(periph
->sim
->sim_name
, "umass", 4) == 0) {
1187 softc
->quirks
|= DA_Q_NO_SYNC_CACHE
;
1190 TASK_INIT(&softc
->sysctl_task
, 0, dasysctlinit
, periph
);
1192 /* Check if the SIM does not want 6 byte commands */
1193 cpi
= &xpt_alloc_ccb()->cpi
;
1194 xpt_setup_ccb(&cpi
->ccb_h
, periph
->path
, /*priority*/1);
1195 cpi
->ccb_h
.func_code
= XPT_PATH_INQ
;
1196 xpt_action((union ccb
*)cpi
);
1197 if (cpi
->ccb_h
.status
== CAM_REQ_CMP
&& (cpi
->hba_misc
& PIM_NO_6_BYTE
))
1198 softc
->quirks
|= DA_Q_NO_6_BYTE
;
1201 * RBC devices don't have to support READ(6), only READ(10).
1203 if (softc
->quirks
& DA_Q_NO_6_BYTE
|| SID_TYPE(&cgd
->inq_data
) == T_RBC
)
1204 softc
->minimum_cmd_size
= 10;
1206 softc
->minimum_cmd_size
= 6;
1209 * Load the user's default, if any.
1211 ksnprintf(tmpstr
, sizeof(tmpstr
), "kern.cam.da.%d.minimum_cmd_size",
1212 periph
->unit_number
);
1213 TUNABLE_INT_FETCH(tmpstr
, &softc
->minimum_cmd_size
);
1216 * 6, 10, 12, and 16 are the currently permissible values.
1218 if (softc
->minimum_cmd_size
< 6)
1219 softc
->minimum_cmd_size
= 6;
1220 else if ((softc
->minimum_cmd_size
> 6)
1221 && (softc
->minimum_cmd_size
<= 10))
1222 softc
->minimum_cmd_size
= 10;
1223 else if ((softc
->minimum_cmd_size
> 10)
1224 && (softc
->minimum_cmd_size
<= 12))
1225 softc
->minimum_cmd_size
= 12;
1226 else if (softc
->minimum_cmd_size
> 12)
1227 softc
->minimum_cmd_size
= 16;
1230 * The DA driver supports a blocksize, but
1231 * we don't know the blocksize until we do
1232 * a read capacity. So, set a flag to
1233 * indicate that the blocksize is
1234 * unavailable right now. We'll clear the
1235 * flag as soon as we've done a read capacity.
1237 devstat_add_entry(&softc
->device_stats
, "da",
1238 periph
->unit_number
, 0,
1239 DEVSTAT_BS_UNAVAILABLE
,
1240 SID_TYPE(&cgd
->inq_data
) | DEVSTAT_TYPE_IF_SCSI
,
1241 DEVSTAT_PRIORITY_DISK
);
1244 * Register this media as a disk
1246 CAM_SIM_UNLOCK(periph
->sim
);
1247 disk_create(periph
->unit_number
, &softc
->disk
, &da_ops
);
1248 if (cpi
->maxio
== 0 || cpi
->maxio
> MAXPHYS
)
1249 softc
->disk
.d_rawdev
->si_iosize_max
= MAXPHYS
;
1251 softc
->disk
.d_rawdev
->si_iosize_max
= cpi
->maxio
;
1253 kprintf("%s%d: si_iosize_max:%d\n",
1254 periph
->periph_name
,
1255 periph
->unit_number
,
1256 softc
->disk
.d_rawdev
->si_iosize_max
);
1258 CAM_SIM_LOCK(periph
->sim
);
1261 * Add async callbacks for bus reset and
1262 * bus device reset calls. I don't bother
1263 * checking if this fails as, in most cases,
1264 * the system will function just fine without
1265 * them and the only alternative would be to
1266 * not attach the device on failure.
1268 xpt_register_async(AC_SENT_BDR
| AC_BUS_RESET
| AC_LOST_DEVICE
,
1269 daasync
, periph
, periph
->path
);
1272 * Take an exclusive refcount on the periph while dastart is called
1273 * to finish the probe. The reference will be dropped in dadone at
1276 xpt_free_ccb(&cpi
->ccb_h
);
1277 cam_periph_hold(periph
, 0);
1278 xpt_schedule(periph
, /*priority*/5);
1280 return(CAM_REQ_CMP
);
1284 dastart(struct cam_periph
*periph
, union ccb
*start_ccb
)
1286 struct da_softc
*softc
;
1288 softc
= (struct da_softc
*)periph
->softc
;
1290 switch (softc
->state
) {
1291 case DA_STATE_NORMAL
:
1293 /* Pull a buffer from the queue and get going on it */
1303 * See if there is a buf with work for us to do..
1305 bio_rd
= bioq_first(&softc
->bio_queue_rd
);
1306 bio_wr
= bioq_first(&softc
->bio_queue_wr
);
1308 if (periph
->immediate_priority
<= periph
->pinfo
.priority
) {
1309 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE
,
1310 ("queuing for immediate ccb\n"));
1311 start_ccb
->ccb_h
.ccb_state
= DA_CCB_WAITING
;
1312 SLIST_INSERT_HEAD(&periph
->ccb_list
, &start_ccb
->ccb_h
,
1314 periph
->immediate_priority
= CAM_PRIORITY_NONE
;
1315 wakeup(&periph
->ccb_list
);
1316 if (bio_rd
|| bio_wr
) {
1318 * Have more work to do, so ensure we stay
1321 xpt_schedule(periph
, /* XXX priority */1);
1326 /* Run the trim command if not already running */
1327 if (!softc
->trim_running
&&
1328 (bio
= bioq_first(&softc
->bio_queue_trim
)) != NULL
) {
1329 struct trim_request
*req
= &softc
->trim_req
;
1331 int bps
= 0, ranges
= 0;
1333 softc
->trim_running
= 1;
1334 bzero(req
, sizeof(*req
));
1341 count
= bp
->b_bcount
/ softc
->params
.secsize
;
1342 lba
= bio1
->bio_offset
/softc
->params
.secsize
;
1344 bioq_remove(&softc
->bio_queue_trim
, bio1
);
1346 int c
= min(count
, 0xffff);
1347 int off
= ranges
* 8;
1349 req
->data
[off
+ 0] = lba
& 0xff;
1350 req
->data
[off
+ 1] = (lba
>> 8) & 0xff;
1351 req
->data
[off
+ 2] = (lba
>> 16) & 0xff;
1352 req
->data
[off
+ 3] = (lba
>> 24) & 0xff;
1353 req
->data
[off
+ 4] = (lba
>> 32) & 0xff;
1354 req
->data
[off
+ 5] = (lba
>> 40) & 0xff;
1355 req
->data
[off
+ 6] = c
& 0xff;
1356 req
->data
[off
+ 7] = (c
>> 8) & 0xff;
1362 /* Try to merge multiple TRIM requests */
1363 req
->bios
[bps
++] = bio1
;
1364 bio1
= bioq_first(&softc
->bio_queue_trim
);
1366 bio1
->bio_buf
->b_bcount
/ softc
->params
.secsize
>
1367 (softc
->trim_max_ranges
- ranges
) * 0xffff)
1372 cam_fill_csio(&start_ccb
->csio
,
1378 ((ranges
+63)/64)*512,
1380 sizeof(struct scsi_rw_6
),
1381 da_default_timeout
*2);
1383 start_ccb
->ccb_h
.ccb_state
= DA_CCB_TRIM
;
1384 LIST_INSERT_HEAD(&softc
->pending_ccbs
,
1385 &start_ccb
->ccb_h
, periph_links
.le
);
1386 start_ccb
->csio
.ccb_h
.func_code
= XPT_TRIM
;
1387 start_ccb
->ccb_h
.ccb_bio
= bio
;
1388 devstat_start_transaction(&softc
->device_stats
);
1389 xpt_action(start_ccb
);
1390 xpt_schedule(periph
, 1);
1395 * Select a read or write buffer to queue. Limit the number
1396 * of tags dedicated to reading or writing, giving reads
1399 * Writes to modern hard drives go into the HDs cache and
1400 * return completion nearly instantly. That is until the
1401 * cache becomes full. When the HDs cache becomes full
1402 * write commands will begin to stall. If all available
1403 * tags are taken up by writes which saturate the drive
1404 * reads will become tag-starved.
1406 * A similar situation can occur with reads. With many
1407 * parallel readers all tags can be taken up by reads
1408 * and prevent any writes from draining, even if the HD's
1409 * cache is not full.
1411 rd_limit
= periph
->sim
->max_tagged_dev_openings
* 2 / 3 + 1;
1412 wr_limit
= rd_limit
;
1415 * When TPS balancing is enabled we force wr_limit to 0
1416 * as necessary to balance the read TPS against the write
1417 * TPS. A lower or higher read:write ratio may be selected
1418 * via da_balance_ratio.
1420 * wr_limit forcing stops queueing writes. This is generally
1421 * necessary because devices buffer writes and may starve
1422 * reads even when plenty of read tags are available.
1424 * When no reads are being done, normalize tps_rd to avoid
1425 * instantly crowbaring the write tps.
1427 if (da_balance_enable
&&
1428 periph
->sim
->max_tagged_dev_openings
>= 8 &&
1429 (bio_rd
|| softc
->outstanding_cmds_rd
) &&
1430 (bio_wr
|| softc
->outstanding_cmds_wr
) &&
1431 softc
->tps_rd
* 100 < softc
->tps_wr
* da_balance_ratio
) {
1433 } else if (bio_rd
== NULL
&& softc
->outstanding_cmds_rd
== 0 &&
1434 softc
->tps_rd
< softc
->tps_wr
* 2) {
1435 softc
->tps_rd
+= 100;
1437 if (softc
->tps_ticks
!= ticks
) {
1438 softc
->tps_ticks
= ticks
;
1439 softc
->tps_rd
= (softc
->tps_rd
* (hz
- 1)) / hz
;
1440 softc
->tps_wr
= (softc
->tps_wr
* (hz
- 1)) / hz
;
1445 static time_t savets
;
1446 if (da_balance_debug
&&
1447 time_uptime
!= savets
&& (bio_rd
|| bio_wr
||
1448 softc
->outstanding_cmds_rd
||
1449 softc
->outstanding_cmds_wr
)) {
1450 kprintf("softc=%p %d/%d %d/%d tps %ld/%ld\n",
1452 softc
->outstanding_cmds_rd
, rd_limit
,
1453 softc
->outstanding_cmds_wr
, wr_limit
,
1454 softc
->tps_rd
/ 100, softc
->tps_wr
/ 100);
1455 savets
= time_uptime
;
1458 if (bio_rd
&& softc
->outstanding_cmds_rd
< rd_limit
) {
1460 bioq_remove(&softc
->bio_queue_rd
, bio
);
1461 softc
->tps_rd
+= 100;
1462 } else if (bio_wr
&& softc
->outstanding_cmds_wr
< wr_limit
) {
1464 bioq_remove(&softc
->bio_queue_wr
, bio
);
1465 softc
->tps_wr
+= 100;
1468 softc
->flags
|= DA_FLAG_RD_LIMIT
;
1470 softc
->flags
|= DA_FLAG_WR_LIMIT
;
1471 xpt_release_ccb(start_ccb
);
1476 * We can queue new work.
1480 devstat_start_transaction(&softc
->device_stats
);
1482 tag_code
= MSG_SIMPLE_Q_TAG
;
1488 * Block read/write op
1490 KKASSERT(bio
->bio_offset
% softc
->params
.secsize
== 0);
1494 da_retry_count
, /* retries */
1497 (bp
->b_cmd
== BUF_CMD_READ
),
1499 softc
->minimum_cmd_size
,
1500 bio
->bio_offset
/ softc
->params
.secsize
,
1501 bp
->b_bcount
/ softc
->params
.secsize
,
1504 SSD_FULL_SIZE
, /* sense_len */
1505 da_default_timeout
* 1000
1510 * Silently complete a flush request if the device
1513 if (softc
->quirks
& DA_Q_NO_SYNC_CACHE
) {
1514 xpt_release_ccb(start_ccb
);
1516 devstat_end_transaction_buf(
1517 &softc
->device_stats
, bp
);
1520 scsi_synchronize_cache(
1523 dadone
, /* cbfcnp */
1526 0, /* count (whole disk) */
1528 da_default_timeout
*1000 /* timeout */
1532 case BUF_CMD_FREEBLKS
:
1533 if (softc
->disk
.d_info
.d_trimflag
& DA_FLAG_CAN_TRIM
){
1534 start_ccb
->csio
.ccb_h
.func_code
= XPT_TRIM
;
1538 xpt_release_ccb(start_ccb
);
1540 panic("dastart: unrecognized bio cmd %d", bp
->b_cmd
);
1541 break; /* NOT REACHED */
1545 * Block out any asyncronous callbacks
1546 * while we touch the pending ccb list.
1549 start_ccb
->ccb_h
.ccb_state
= DA_CCB_BUFFER_IO
;
1550 LIST_INSERT_HEAD(&softc
->pending_ccbs
,
1551 &start_ccb
->ccb_h
, periph_links
.le
);
1552 if (bp
->b_cmd
== BUF_CMD_WRITE
||
1553 bp
->b_cmd
== BUF_CMD_FLUSH
) {
1554 ++softc
->outstanding_cmds_wr
;
1556 ++softc
->outstanding_cmds_rd
;
1559 /* We expect a unit attention from this device */
1560 if ((softc
->flags
& DA_FLAG_RETRY_UA
) != 0) {
1561 start_ccb
->ccb_h
.ccb_state
|= DA_CCB_RETRY_UA
;
1562 softc
->flags
&= ~DA_FLAG_RETRY_UA
;
1565 start_ccb
->ccb_h
.ccb_bio
= bio
;
1566 xpt_action(start_ccb
);
1570 * Be sure we stay scheduled if we have more work to do.
1572 if (bioq_first(&softc
->bio_queue_rd
) ||
1573 bioq_first(&softc
->bio_queue_wr
)) {
1574 xpt_schedule(periph
, 1);
1578 case DA_STATE_PROBE
:
1580 struct ccb_scsiio
*csio
;
1581 struct scsi_read_capacity_data
*rcap
;
1583 rcap
= kmalloc(sizeof(*rcap
), M_SCSIDA
, M_INTWAIT
| M_ZERO
);
1584 csio
= &start_ccb
->csio
;
1585 scsi_read_capacity(csio
,
1592 start_ccb
->ccb_h
.ccb_bio
= NULL
;
1593 start_ccb
->ccb_h
.ccb_state
= DA_CCB_PROBE
;
1594 xpt_action(start_ccb
);
1597 case DA_STATE_PROBE2
:
1599 struct ccb_scsiio
*csio
;
1600 struct scsi_read_capacity_data_16
*rcaplong
;
1602 rcaplong
= kmalloc(sizeof(*rcaplong
), M_SCSIDA
,
1603 M_INTWAIT
| M_ZERO
);
1604 csio
= &start_ccb
->csio
;
1605 scsi_read_capacity_16(csio
,
1608 /*tag_action*/ MSG_SIMPLE_Q_TAG
,
1613 /*sense_len*/ SSD_FULL_SIZE
,
1615 start_ccb
->ccb_h
.ccb_bio
= NULL
;
1616 start_ccb
->ccb_h
.ccb_state
= DA_CCB_PROBE2
;
1617 xpt_action(start_ccb
);
1624 cmd6workaround(union ccb
*ccb
)
1626 struct scsi_rw_6 cmd6
;
1627 struct scsi_rw_10
*cmd10
;
1628 struct da_softc
*softc
;
1632 cdb
= ccb
->csio
.cdb_io
.cdb_bytes
;
1634 /* Translation only possible if CDB is an array and cmd is R/W6 */
1635 if ((ccb
->ccb_h
.flags
& CAM_CDB_POINTER
) != 0 ||
1636 (*cdb
!= READ_6
&& *cdb
!= WRITE_6
))
1639 xpt_print(ccb
->ccb_h
.path
, "READ(6)/WRITE(6) not supported, "
1640 "increasing minimum_cmd_size to 10.\n");
1641 softc
= (struct da_softc
*)xpt_path_periph(ccb
->ccb_h
.path
)->softc
;
1642 softc
->minimum_cmd_size
= 10;
1644 bcopy(cdb
, &cmd6
, sizeof(struct scsi_rw_6
));
1645 cmd10
= (struct scsi_rw_10
*)cdb
;
1646 cmd10
->opcode
= (cmd6
.opcode
== READ_6
) ? READ_10
: WRITE_10
;
1648 scsi_ulto4b(scsi_3btoul(cmd6
.addr
), cmd10
->addr
);
1649 cmd10
->reserved
= 0;
1650 scsi_ulto2b(cmd6
.length
, cmd10
->length
);
1651 cmd10
->control
= cmd6
.control
;
1652 ccb
->csio
.cdb_len
= sizeof(*cmd10
);
1654 /* Requeue request, unfreezing queue if necessary */
1655 frozen
= (ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0;
1656 ccb
->ccb_h
.status
= CAM_REQUEUE_REQ
;
1659 cam_release_devq(ccb
->ccb_h
.path
,
1663 /*getcount_only*/0);
1669 dadone(struct cam_periph
*periph
, union ccb
*done_ccb
)
1671 struct da_softc
*softc
;
1672 struct ccb_scsiio
*csio
;
1673 struct disk_info info
;
1675 softc
= (struct da_softc
*)periph
->softc
;
1676 csio
= &done_ccb
->csio
;
1677 switch (csio
->ccb_h
.ccb_state
& DA_CCB_TYPE_MASK
) {
1678 case DA_CCB_BUFFER_IO
:
1685 bio
= (struct bio
*)done_ccb
->ccb_h
.ccb_bio
;
1687 if ((done_ccb
->ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
1691 if ((csio
->ccb_h
.ccb_state
& DA_CCB_RETRY_UA
) != 0)
1696 error
= daerror(done_ccb
, CAM_RETRY_SELTO
, sf
);
1697 if (error
== ERESTART
) {
1699 * A retry was scheuled, so
1705 if (error
== ENXIO
) {
1707 * Catastrophic error. Mark our pack as
1711 * XXX See if this is really a media
1714 xpt_print(periph
->path
,
1715 "Invalidating pack\n");
1716 softc
->flags
|= DA_FLAG_PACK_INVALID
;
1720 * Return all queued write I/O's with EIO
1721 * so the client can retry these I/Os in the
1722 * proper order should it attempt to recover.
1724 * Leave read I/O's alone.
1726 daflushbioq(&softc
->bio_queue_wr
, EIO
);
1727 bp
->b_error
= error
;
1728 bp
->b_resid
= bp
->b_bcount
;
1729 bp
->b_flags
|= B_ERROR
;
1731 bp
->b_resid
= csio
->resid
;
1733 if (bp
->b_resid
!= 0)
1734 bp
->b_flags
|= B_ERROR
;
1736 if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0)
1737 cam_release_devq(done_ccb
->ccb_h
.path
,
1741 /*getcount_only*/0);
1743 if ((done_ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0)
1744 panic("REQ_CMP with QFRZN");
1745 bp
->b_resid
= csio
->resid
;
1746 if (csio
->resid
> 0)
1747 bp
->b_flags
|= B_ERROR
;
1751 * Schedule the peripheral to pipeline further reads and
1752 * writes. A completed write wakes up more pending writes.
1753 * A completed read must wake up on either pending reads
1754 * or writes due to TPS balancing.
1756 * Block out any asyncronous callbacks while we touch the
1759 LIST_REMOVE(&done_ccb
->ccb_h
, periph_links
.le
);
1760 if (bp
->b_cmd
== BUF_CMD_WRITE
|| bp
->b_cmd
== BUF_CMD_FLUSH
) {
1761 --softc
->outstanding_cmds_wr
;
1762 if (softc
->flags
& DA_FLAG_WR_LIMIT
) {
1763 softc
->flags
&= ~DA_FLAG_WR_LIMIT
;
1767 --softc
->outstanding_cmds_rd
;
1769 (DA_FLAG_RD_LIMIT
| DA_FLAG_WR_LIMIT
)) {
1771 ~(DA_FLAG_RD_LIMIT
| DA_FLAG_WR_LIMIT
);
1776 devstat_end_transaction_buf(&softc
->device_stats
, bp
);
1777 if ((csio
->ccb_h
.ccb_state
& DA_CCB_TYPE_MASK
) ==
1779 struct trim_request
*req
=
1780 (struct trim_request
*) csio
->data_ptr
;
1783 for (i
= 1; i
< softc
->trim_max_ranges
&&
1784 req
->bios
[i
]; i
++) {
1785 struct bio
*bp1
= req
->bios
[i
];
1787 bp1
->bio_buf
->b_resid
= bp
->b_resid
;
1788 bp1
->bio_buf
->b_error
= bp
->b_error
;
1789 if (bp
->b_flags
& B_ERROR
)
1790 bp1
->bio_buf
->b_flags
|= B_ERROR
;
1793 softc
->trim_running
= 0;
1795 xpt_schedule(periph
,1);
1801 xpt_schedule(periph
, /*priority*/1);
1808 struct scsi_read_capacity_data
*rdcap
;
1809 struct scsi_read_capacity_data_16
*rcaplong
;
1810 char announce_buf
[80];
1815 if (softc
->state
== DA_STATE_PROBE
)
1816 rdcap
=(struct scsi_read_capacity_data
*)csio
->data_ptr
;
1818 rcaplong
= (struct scsi_read_capacity_data_16
*)
1821 bzero(&info
, sizeof(info
));
1822 info
.d_type
= DTYPE_SCSI
;
1823 info
.d_serialno
= xpt_path_serialno(periph
->path
);
1825 if ((csio
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_CMP
) {
1826 struct disk_params
*dp
;
1827 uint32_t block_size
;
1830 if (softc
->state
== DA_STATE_PROBE
) {
1831 block_size
= scsi_4btoul(rdcap
->length
);
1832 maxsector
= scsi_4btoul(rdcap
->addr
);
1835 * According to SBC-2, if the standard 10
1836 * byte READ CAPACITY command returns 2^32,
1837 * we should issue the 16 byte version of
1838 * the command, since the device in question
1839 * has more sectors than can be represented
1840 * with the short version of the command.
1842 if (maxsector
== 0xffffffff) {
1843 softc
->state
= DA_STATE_PROBE2
;
1844 kfree(rdcap
, M_SCSIDA
);
1845 xpt_release_ccb(done_ccb
);
1846 xpt_schedule(periph
, /*priority*/5);
1850 block_size
= scsi_4btoul(rcaplong
->length
);
1851 maxsector
= scsi_8btou64(rcaplong
->addr
);
1853 dasetgeom(periph
, block_size
, maxsector
);
1854 dp
= &softc
->params
;
1855 ksnprintf(announce_buf
, sizeof(announce_buf
),
1856 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1857 (uintmax_t) (((uintmax_t)dp
->secsize
*
1858 dp
->sectors
) / (1024*1024)),
1859 (uintmax_t)dp
->sectors
,
1860 dp
->secsize
, dp
->heads
, dp
->secs_per_track
,
1863 info
.d_media_blksize
= softc
->params
.secsize
;
1864 info
.d_media_blocks
= softc
->params
.sectors
;
1865 info
.d_media_size
= 0;
1866 info
.d_secpertrack
= softc
->params
.secs_per_track
;
1867 info
.d_nheads
= softc
->params
.heads
;
1868 info
.d_ncylinders
= softc
->params
.cylinders
;
1869 info
.d_secpercyl
= softc
->params
.heads
*
1870 softc
->params
.secs_per_track
;
1871 info
.d_serialno
= xpt_path_serialno(periph
->path
);
1876 announce_buf
[0] = '\0';
1879 * Retry any UNIT ATTENTION type errors. They
1880 * are expected at boot.
1882 error
= daerror(done_ccb
, CAM_RETRY_SELTO
,
1883 SF_RETRY_UA
|SF_NO_PRINT
);
1884 if (error
== ERESTART
) {
1886 * A retry was scheuled, so
1890 } else if (error
!= 0) {
1891 struct scsi_sense_data
*sense
;
1893 int sense_key
, error_code
;
1896 struct ccb_getdev
*cgd
;
1898 /* Don't wedge this device's queue */
1899 status
= done_ccb
->ccb_h
.status
;
1900 if ((status
& CAM_DEV_QFRZN
) != 0)
1901 cam_release_devq(done_ccb
->ccb_h
.path
,
1905 /*getcount_only*/0);
1907 cgd
= &xpt_alloc_ccb()->cgd
;
1908 xpt_setup_ccb(&cgd
->ccb_h
,
1909 done_ccb
->ccb_h
.path
,
1911 cgd
->ccb_h
.func_code
= XPT_GDEV_TYPE
;
1912 xpt_action((union ccb
*)cgd
);
1914 if (((csio
->ccb_h
.flags
& CAM_SENSE_PHYS
) != 0)
1915 || ((csio
->ccb_h
.flags
& CAM_SENSE_PTR
) != 0)
1916 || ((status
& CAM_AUTOSNS_VALID
) == 0))
1922 sense
= &csio
->sense_data
;
1923 scsi_extract_sense(sense
, &error_code
,
1928 * Attach to anything that claims to be a
1929 * direct access or optical disk device,
1930 * as long as it doesn't return a "Logical
1931 * unit not supported" (0x25) error.
1933 if ((have_sense
) && (asc
!= 0x25)
1934 && (error_code
== SSD_CURRENT_ERROR
)) {
1935 const char *sense_key_desc
;
1936 const char *asc_desc
;
1938 scsi_sense_desc(sense_key
, asc
, ascq
,
1942 ksnprintf(announce_buf
,
1943 sizeof(announce_buf
),
1944 "Attempt to query device "
1945 "size failed: %s, %s",
1948 info
.d_media_blksize
= 512;
1955 xpt_print(periph
->path
,
1956 "got CAM status %#x\n",
1957 done_ccb
->ccb_h
.status
);
1960 xpt_print(periph
->path
, "fatal error, "
1961 "failed to attach to device\n");
1964 * Free up resources.
1966 cam_periph_invalidate(periph
);
1968 xpt_free_ccb(&cgd
->ccb_h
);
1971 kfree(csio
->data_ptr
, M_SCSIDA
);
1972 if (announce_buf
[0] != '\0')
1973 xpt_announce_periph(periph
, announce_buf
);
1975 if (softc
->trim_max_ranges
) {
1976 info
.d_trimflag
|= DA_FLAG_CAN_TRIM
;
1977 kprintf("%s%d: supports TRIM\n",
1978 periph
->periph_name
,
1979 periph
->unit_number
);
1981 softc
->state
= DA_STATE_NORMAL
;
1984 * Since our peripheral may be invalidated by an error
1985 * above or an external event, we must release our CCB
1986 * before releasing the probe lock on the peripheral.
1987 * The peripheral will only go away once the last lock
1988 * is removed, and we need it around for the CCB release
1991 xpt_release_ccb(done_ccb
);
1992 cam_periph_unhold(periph
, 0);
1994 CAM_SIM_UNLOCK(periph
->sim
);
1995 disk_setdiskinfo(&softc
->disk
, &info
);
1996 CAM_SIM_LOCK(periph
->sim
);
1999 * Create our sysctl variables, now that we know
2000 * we have successfully attached.
2002 taskqueue_enqueue(taskqueue_thread
[mycpuid
],
2003 &softc
->sysctl_task
);
2007 case DA_CCB_WAITING
:
2009 /* Caller will release the CCB */
2010 wakeup(&done_ccb
->ccb_h
.cbfcnp
);
2014 /* No-op. We're polling */
2017 /* Caller releases ccb */
2018 wakeup(&done_ccb
->ccb_h
.cbfcnp
);
2023 xpt_release_ccb(done_ccb
);
2027 daerror(union ccb
*ccb
, u_int32_t cam_flags
, u_int32_t sense_flags
)
2029 struct da_softc
*softc
;
2030 struct cam_periph
*periph
;
2033 periph
= xpt_path_periph(ccb
->ccb_h
.path
);
2034 softc
= (struct da_softc
*)periph
->softc
;
2037 * Automatically detect devices that do not support
2038 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
2041 if ((ccb
->ccb_h
.status
& CAM_STATUS_MASK
) == CAM_REQ_INVALID
) {
2042 error
= cmd6workaround(ccb
);
2043 } else if (((ccb
->ccb_h
.status
& CAM_STATUS_MASK
) ==
2044 CAM_SCSI_STATUS_ERROR
)
2045 && (ccb
->ccb_h
.status
& CAM_AUTOSNS_VALID
)
2046 && (ccb
->csio
.scsi_status
== SCSI_STATUS_CHECK_COND
)
2047 && ((ccb
->ccb_h
.flags
& CAM_SENSE_PHYS
) == 0)
2048 && ((ccb
->ccb_h
.flags
& CAM_SENSE_PTR
) == 0)) {
2049 int sense_key
, error_code
, asc
, ascq
;
2051 scsi_extract_sense(&ccb
->csio
.sense_data
,
2052 &error_code
, &sense_key
, &asc
, &ascq
);
2053 if (sense_key
== SSD_KEY_ILLEGAL_REQUEST
)
2054 error
= cmd6workaround(ccb
);
2056 if (error
== ERESTART
)
2061 * Until we have a better way of doing pack validation,
2062 * don't treat UAs as errors.
2064 sense_flags
|= SF_RETRY_UA
;
2065 return(cam_periph_error(ccb
, cam_flags
, sense_flags
,
2066 &softc
->saved_ccb
));
2070 daprevent(struct cam_periph
*periph
, int action
)
2072 struct da_softc
*softc
;
2076 softc
= (struct da_softc
*)periph
->softc
;
2078 if (((action
== PR_ALLOW
)
2079 && (softc
->flags
& DA_FLAG_PACK_LOCKED
) == 0)
2080 || ((action
== PR_PREVENT
)
2081 && (softc
->flags
& DA_FLAG_PACK_LOCKED
) != 0)) {
2085 ccb
= cam_periph_getccb(periph
, /*priority*/1);
2086 ccb
->ccb_h
.ccb_state
= DA_CCB_POLLED
;
2088 scsi_prevent(&ccb
->csio
,
2096 error
= cam_periph_runccb(ccb
, /*error_routine*/NULL
, CAM_RETRY_SELTO
,
2097 SF_RETRY_UA
, &softc
->device_stats
);
2100 if (action
== PR_ALLOW
)
2101 softc
->flags
&= ~DA_FLAG_PACK_LOCKED
;
2103 softc
->flags
|= DA_FLAG_PACK_LOCKED
;
2106 xpt_release_ccb(ccb
);
2110 * Check media on open, e.g. card reader devices which had no initial media.
2113 dacheckmedia(struct cam_periph
*periph
)
2115 struct disk_params
*dp
;
2116 struct da_softc
*softc
;
2117 struct disk_info info
;
2121 softc
= (struct da_softc
*)periph
->softc
;
2122 dp
= &softc
->params
;
2124 if (softc
->flags
& DA_FLAG_CAP_MUTE
) /* additional ccb flags */
2129 error
= dagetcapacity(periph
, mute
);
2132 * Only reprobe on initial open and if the media is removable.
2134 * NOTE: If we setdiskinfo() it will take the device probe
2135 * a bit of time to probe the slices and partitions,
2136 * and mess up booting. So avoid if nothing has changed.
2139 if (softc
->flags
& DA_FLAG_OPEN
)
2141 if ((softc
->flags
& DA_FLAG_PACK_REMOVABLE
) == 0)
2144 bzero(&info
, sizeof(info
));
2145 info
.d_type
= DTYPE_SCSI
;
2146 info
.d_serialno
= xpt_path_serialno(periph
->path
);
2149 CAM_SIM_UNLOCK(periph
->sim
);
2150 info
.d_media_blksize
= softc
->params
.secsize
;
2151 info
.d_media_blocks
= softc
->params
.sectors
;
2152 info
.d_media_size
= 0;
2153 info
.d_secpertrack
= softc
->params
.secs_per_track
;
2154 info
.d_nheads
= softc
->params
.heads
;
2155 info
.d_ncylinders
= softc
->params
.cylinders
;
2156 info
.d_secpercyl
= softc
->params
.heads
*
2157 softc
->params
.secs_per_track
;
2158 info
.d_serialno
= xpt_path_serialno(periph
->path
);
2159 if (info
.d_media_blocks
!= softc
->disk
.d_info
.d_media_blocks
) {
2160 kprintf("%s%d: open removable media: "
2161 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)\n",
2162 periph
->periph_name
, periph
->unit_number
,
2163 (uintmax_t)(((uintmax_t)dp
->secsize
*
2164 dp
->sectors
) / (1024*1024)),
2165 (uintmax_t)dp
->sectors
, dp
->secsize
,
2166 dp
->heads
, dp
->secs_per_track
, dp
->cylinders
);
2167 disk_setdiskinfo(&softc
->disk
, &info
);
2169 CAM_SIM_LOCK(periph
->sim
);
2171 if (!mute
|| bootverbose
) {
2172 kprintf("%s%d: open removable media: "
2173 "no media present\n",
2174 periph
->periph_name
, periph
->unit_number
);
2176 info
.d_media_blksize
= 512;
2177 disk_setdiskinfo(&softc
->disk
, &info
);
2183 dagetcapacity(struct cam_periph
*periph
, int ccbflags
)
2185 struct da_softc
*softc
;
2187 struct scsi_read_capacity_data
*rcap
;
2188 struct scsi_read_capacity_data_16
*rcaplong
;
2193 softc
= (struct da_softc
*)periph
->softc
;
2198 /* Do a read capacity */
2199 rcap
= (struct scsi_read_capacity_data
*)kmalloc(sizeof(*rcaplong
),
2200 M_SCSIDA
, M_INTWAIT
);
2202 ccb
= cam_periph_getccb(periph
, /*priority*/1);
2203 ccb
->ccb_h
.ccb_state
= DA_CCB_POLLED
;
2205 scsi_read_capacity(&ccb
->csio
,
2212 ccb
->ccb_h
.ccb_bio
= NULL
;
2213 ccb
->ccb_h
.flags
|= ccbflags
;
2215 error
= cam_periph_runccb(ccb
, daerror
,
2216 /*cam_flags*/CAM_RETRY_SELTO
,
2217 /*sense_flags*/SF_RETRY_UA
,
2218 &softc
->device_stats
);
2220 if ((ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0)
2221 cam_release_devq(ccb
->ccb_h
.path
,
2225 /*getcount_only*/0);
2228 block_len
= scsi_4btoul(rcap
->length
);
2229 maxsector
= scsi_4btoul(rcap
->addr
);
2231 if (maxsector
!= 0xffffffff)
2236 rcaplong
= (struct scsi_read_capacity_data_16
*)rcap
;
2238 scsi_read_capacity_16(&ccb
->csio
,
2241 /*tag_action*/ MSG_SIMPLE_Q_TAG
,
2246 /*sense_len*/ SSD_FULL_SIZE
,
2248 ccb
->ccb_h
.ccb_bio
= NULL
;
2250 error
= cam_periph_runccb(ccb
, daerror
,
2251 /*cam_flags*/CAM_RETRY_SELTO
,
2252 /*sense_flags*/SF_RETRY_UA
,
2253 &softc
->device_stats
);
2255 if ((ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0)
2256 cam_release_devq(ccb
->ccb_h
.path
,
2260 /*getcount_only*/0);
2263 block_len
= scsi_4btoul(rcaplong
->length
);
2264 maxsector
= scsi_8btou64(rcaplong
->addr
);
2270 dasetgeom(periph
, block_len
, maxsector
);
2272 xpt_release_ccb(ccb
);
2274 kfree(rcap
, M_SCSIDA
);
2280 dasetgeom(struct cam_periph
*periph
, uint32_t block_len
, uint64_t maxsector
)
2282 struct ccb_calc_geometry
*ccg
;
2283 struct da_softc
*softc
;
2284 struct disk_params
*dp
;
2286 softc
= (struct da_softc
*)periph
->softc
;
2288 dp
= &softc
->params
;
2289 dp
->secsize
= block_len
;
2290 dp
->sectors
= maxsector
+ 1;
2292 * Have the controller provide us with a geometry
2293 * for this disk. The only time the geometry
2294 * matters is when we boot and the controller
2295 * is the only one knowledgeable enough to come
2296 * up with something that will make this a bootable
2299 ccg
= &xpt_alloc_ccb()->ccg
;
2300 xpt_setup_ccb(&ccg
->ccb_h
, periph
->path
, /*priority*/1);
2301 ccg
->ccb_h
.func_code
= XPT_CALC_GEOMETRY
;
2302 ccg
->block_size
= dp
->secsize
;
2303 ccg
->volume_size
= dp
->sectors
;
2305 ccg
->secs_per_track
= 0;
2307 xpt_action((union ccb
*)ccg
);
2308 if ((ccg
->ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
2310 * We don't know what went wrong here- but just pick
2311 * a geometry so we don't have nasty things like divide
2315 dp
->secs_per_track
= 255;
2316 dp
->cylinders
= dp
->sectors
/ (255 * 255);
2317 if (dp
->cylinders
== 0) {
2321 dp
->heads
= ccg
->heads
;
2322 dp
->secs_per_track
= ccg
->secs_per_track
;
2323 dp
->cylinders
= ccg
->cylinders
;
2325 xpt_free_ccb(&ccg
->ccb_h
);
2329 * Step through all DA peripheral drivers, and if the device is still open,
2330 * sync the disk cache to physical media.
2333 dashutdown(void * arg
, int howto
)
2335 struct cam_periph
*periph
;
2336 struct da_softc
*softc
;
2338 TAILQ_FOREACH(periph
, &dadriver
.units
, unit_links
) {
2341 cam_periph_lock(periph
);
2342 softc
= (struct da_softc
*)periph
->softc
;
2345 * We only sync the cache if the drive is still open, and
2346 * if the drive is capable of it..
2348 if (((softc
->flags
& DA_FLAG_OPEN
) == 0)
2349 || (softc
->quirks
& DA_Q_NO_SYNC_CACHE
)) {
2350 cam_periph_unlock(periph
);
2354 ccb
= xpt_alloc_ccb();
2355 xpt_setup_ccb(&ccb
->ccb_h
, periph
->path
, /*priority*/1);
2357 ccb
->ccb_h
.ccb_state
= DA_CCB_DUMP
;
2358 scsi_synchronize_cache(&ccb
->csio
,
2362 /*begin_lba*/0, /* whole disk */
2367 xpt_polled_action(ccb
);
2369 if ((ccb
->ccb_h
.status
& CAM_STATUS_MASK
) != CAM_REQ_CMP
) {
2370 if (((ccb
->ccb_h
.status
& CAM_STATUS_MASK
) ==
2371 CAM_SCSI_STATUS_ERROR
)
2372 && (ccb
->csio
.scsi_status
== SCSI_STATUS_CHECK_COND
)){
2373 int error_code
, sense_key
, asc
, ascq
;
2375 scsi_extract_sense(&ccb
->csio
.sense_data
,
2376 &error_code
, &sense_key
,
2379 if (sense_key
!= SSD_KEY_ILLEGAL_REQUEST
)
2380 scsi_sense_print(&ccb
->csio
);
2382 xpt_print(periph
->path
, "Synchronize "
2383 "cache failed, status == 0x%x, scsi status "
2384 "== 0x%x\n", ccb
->ccb_h
.status
,
2385 ccb
->csio
.scsi_status
);
2389 if ((ccb
->ccb_h
.status
& CAM_DEV_QFRZN
) != 0)
2390 cam_release_devq(ccb
->ccb_h
.path
,
2394 /*getcount_only*/0);
2396 cam_periph_unlock(periph
);
2397 xpt_free_ccb(&ccb
->ccb_h
);
2401 #else /* !_KERNEL */
2404 * XXX This is only left out of the kernel build to silence warnings. If,
2405 * for some reason this function is used in the kernel, the ifdefs should
2406 * be moved so it is included both in the kernel and userland.
2409 scsi_format_unit(struct ccb_scsiio
*csio
, u_int32_t retries
,
2410 void (*cbfcnp
)(struct cam_periph
*, union ccb
*),
2411 u_int8_t tag_action
, u_int8_t byte2
, u_int16_t ileave
,
2412 u_int8_t
*data_ptr
, u_int32_t dxfer_len
, u_int8_t sense_len
,
2415 struct scsi_format_unit
*scsi_cmd
;
2417 scsi_cmd
= (struct scsi_format_unit
*)&csio
->cdb_io
.cdb_bytes
;
2418 scsi_cmd
->opcode
= FORMAT_UNIT
;
2419 scsi_cmd
->byte2
= byte2
;
2420 scsi_ulto2b(ileave
, scsi_cmd
->interleave
);
2425 /*flags*/ (dxfer_len
> 0) ? CAM_DIR_OUT
: CAM_DIR_NONE
,
2434 #endif /* _KERNEL */