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>
42 #include <sys/devicestat.h>
44 #include <sys/dtype.h>
45 #include <sys/eventhandler.h>
46 #include <sys/malloc.h>
51 #include <sys/thread2.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
102 DA_Q_NO_SYNC_CACHE = 0x01,
103 DA_Q_NO_6_BYTE = 0x02,
104 DA_Q_NO_PREVENT = 0x04
108 DA_CCB_POLLED = 0x00,
110 DA_CCB_PROBE2 = 0x02,
111 DA_CCB_BUFFER_IO = 0x03,
112 DA_CCB_WAITING = 0x04,
115 DA_CCB_TYPE_MASK = 0x0F,
116 DA_CCB_RETRY_UA = 0x10
119 /* Offsets into our private area for storing information */
120 #define ccb_state ppriv_field0
121 #define ccb_bio ppriv_ptr1
126 u_int8_t secs_per_track;
127 u_int32_t secsize; /* Number of bytes/sector */
128 u_int64_t sectors; /* total number sectors */
131 #define TRIM_MAX_BLOCKS 8
132 #define TRIM_MAX_RANGES TRIM_MAX_BLOCKS * 64
133 struct trim_request {
134 uint8_t data[TRIM_MAX_RANGES * 8];
135 struct bio *bios[TRIM_MAX_RANGES];
139 struct bio_queue_head bio_queue_rd;
140 struct bio_queue_head bio_queue_wr;
141 struct bio_queue_head bio_queue_trim;
142 struct devstat device_stats;
143 SLIST_ENTRY(da_softc) links;
144 LIST_HEAD(, ccb_hdr) pending_ccbs;
148 int minimum_cmd_size;
149 int outstanding_cmds_rd;
150 int outstanding_cmds_wr;
154 struct disk_params params;
157 struct task sysctl_task;
158 struct sysctl_ctx_list sysctl_ctx;
159 struct sysctl_oid *sysctl_tree;
160 struct trim_request trim_req;
163 struct da_quirk_entry {
164 struct scsi_inquiry_pattern inq_pat;
168 static const char quantum[] = "QUANTUM";
169 static const char microp[] = "MICROP";
171 static struct da_quirk_entry da_quirk_table[] =
173 /* SPI, FC devices */
176 * Fujitsu M2513A MO drives.
177 * Tested devices: M2513A2 firmware versions 1200 & 1300.
178 * (dip switch selects whether T_DIRECT or T_OPTICAL device)
179 * Reported by: W.Scholten <whs@xs4all.nl>
181 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
182 /*quirks*/ DA_Q_NO_SYNC_CACHE
186 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
187 /*quirks*/ DA_Q_NO_SYNC_CACHE
191 * This particular Fujitsu drive doesn't like the
192 * synchronize cache command.
193 * Reported by: Tom Jackson <toj@gorilla.net>
195 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
196 /*quirks*/ DA_Q_NO_SYNC_CACHE
200 * This drive doesn't like the synchronize cache command
201 * either. Reported by: Matthew Jacob <mjacob@feral.com>
202 * in NetBSD PR kern/6027, August 24, 1998.
204 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
205 /*quirks*/ DA_Q_NO_SYNC_CACHE
209 * This drive doesn't like the synchronize cache command
210 * either. Reported by: Hellmuth Michaelis (hm@kts.org)
213 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
214 /*quirks*/ DA_Q_NO_SYNC_CACHE
218 * Doesn't like the synchronize cache command.
219 * Reported by: Blaz Zupan <blaz@gold.amis.net>
221 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
222 /*quirks*/ DA_Q_NO_SYNC_CACHE
226 * Doesn't like the synchronize cache command.
227 * Reported by: Blaz Zupan <blaz@gold.amis.net>
229 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
230 /*quirks*/ DA_Q_NO_SYNC_CACHE
234 * Doesn't like the synchronize cache command.
236 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
237 /*quirks*/ DA_Q_NO_SYNC_CACHE
241 * Doesn't like the synchronize cache command.
242 * Reported by: walter@pelissero.de
244 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"},
245 /*quirks*/ DA_Q_NO_SYNC_CACHE
249 * Doesn't work correctly with 6 byte reads/writes.
250 * Returns illegal request, and points to byte 9 of the
252 * Reported by: Adam McDougall <bsdx@spawnet.com>
254 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
255 /*quirks*/ DA_Q_NO_6_BYTE
259 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
260 /*quirks*/ DA_Q_NO_6_BYTE
264 * Doesn't like the synchronize cache command.
265 * Reported by: walter@pelissero.de
267 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
268 /*quirks*/ DA_Q_NO_SYNC_CACHE
272 * The CISS RAID controllers do not support SYNC_CACHE
274 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
275 /*quirks*/ DA_Q_NO_SYNC_CACHE
279 * The same goes for the mly(4) controllers
281 {T_DIRECT, SIP_MEDIA_FIXED, "MLY*", "*", "MYLX"},
282 /*quirks*/ DA_Q_NO_SYNC_CACHE
285 * USB mass storage devices supported by umass(4)
287 * NOTE: USB attachments automatically set DA_Q_NO_SYNC_CACHE so
288 * it does not have to be specified here.
292 * Creative Nomad MUVO mp3 player (USB)
295 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
296 /*quirks*/ DA_Q_NO_PREVENT
300 * Sigmatel USB Flash MP3 Player
303 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"},
304 /*quirks*/ DA_Q_NO_PREVENT
308 * SEAGRAND NP-900 MP3 Player
311 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"},
312 /*quirks*/ DA_Q_NO_PREVENT
316 * Creative MUVO Slim mp3 player (USB)
319 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim",
320 "*"}, /*quirks*/ DA_Q_NO_PREVENT
324 * Philips USB Key Audio KEY013
327 {T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"},
328 /*quirks*/ DA_Q_NO_PREVENT
332 static d_open_t daopen;
333 static d_close_t daclose;
334 static d_strategy_t dastrategy;
335 static d_dump_t dadump;
336 static d_ioctl_t daioctl;
337 static periph_init_t dainit;
338 static void daasync(void *callback_arg, u_int32_t code,
339 struct cam_path *path, void *arg);
340 static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
341 static periph_ctor_t daregister;
342 static periph_dtor_t dacleanup;
343 static periph_start_t dastart;
344 static periph_oninv_t daoninvalidate;
345 static void dadone(struct cam_periph *periph,
346 union ccb *done_ccb);
347 static int daerror(union ccb *ccb, u_int32_t cam_flags,
348 u_int32_t sense_flags);
349 static void daprevent(struct cam_periph *periph, int action);
350 static int dagetcapacity(struct cam_periph *periph);
351 static int dacheckmedia(struct cam_periph *periph);
352 static void dasetgeom(struct cam_periph *periph, uint32_t block_len,
354 static void daflushbioq(struct bio_queue_head *bioq, int error);
355 static void dashutdown(void *arg, int howto);
357 #ifndef DA_DEFAULT_TIMEOUT
358 #define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */
361 #ifndef DA_DEFAULT_RETRY
362 #define DA_DEFAULT_RETRY 4
365 static int da_retry_count = DA_DEFAULT_RETRY;
366 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
368 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
369 "CAM Direct Access Disk driver");
370 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
371 &da_retry_count, 0, "Normal I/O retry count");
372 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
373 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
374 &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
375 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
377 static struct periph_driver dadriver =
380 TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
383 PERIPHDRIVER_DECLARE(da, dadriver);
385 static struct dev_ops da_ops = {
386 { "da", 0, D_DISK | D_MPSAFE },
390 .d_write = physwrite,
391 .d_strategy = dastrategy,
396 static struct extend_array *daperiphs;
398 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
401 daioctl(struct dev_ioctl_args *ap)
406 struct cam_periph *periph;
409 off_t *del_num = (off_t*)ap->a_data;
413 cdev_t dev = ap->a_head.a_dev;
417 periph = cam_extend_get(daperiphs, unit);
425 bytes_left = del_num[1];
426 bytes_start = del_num[0];
428 /* TRIM occurs on 512-byte sectors. */
429 KKASSERT((bytes_left % 512) == 0);
430 KKASSERT((bytes_start% 512) == 0);
433 /* Break TRIM up into int-sized commands because of b_bcount */
437 * Rather than than squezing out more blocks in b_bcount
438 * and having to break up the TRIM request in da_start(),
439 * we ensure we can always TRIM this many bytes with one
440 * TRIM command (this happens if the device only
441 * supports one TRIM block).
443 * With min TRIM blksize of 1, TRIM command free
444 * 4194240 blks(64*65535): each LBA range can address
445 * 65535 blks and there 64 such ranges in a 512-byte
446 * block. And, 4194240 * 512 = 0x7FFF8000
449 byte_count = MIN(bytes_left,0x7FFF8000);
450 bp = getnewbuf(0, 0, 0, 1);
452 bp->b_cmd = BUF_CMD_FREEBLKS;
453 bp->b_bio1.bio_offset = bytes_start;
454 bp->b_bcount = byte_count;
455 bp->b_bio1.bio_flags |= BIO_SYNC;
456 bp->b_bio1.bio_done = biodone_sync;
458 dev_dstrategy(ap->a_head.a_dev, &bp->b_bio1);
460 if (biowait(&bp->b_bio1, "TRIM")) {
461 kprintf("Error:%d\n", bp->b_error);
463 return(bp->b_error ? bp->b_error : EIO);
466 bytes_left -= byte_count;
467 bytes_start += byte_count;
479 daopen(struct dev_open_args *ap)
481 cdev_t dev = ap->a_head.a_dev;
482 struct cam_periph *periph;
483 struct da_softc *softc;
484 struct disk_info info;
489 periph = cam_extend_get(daperiphs, unit);
490 if (periph == NULL) {
494 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
498 cam_periph_lock(periph);
499 if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
500 cam_periph_unlock(periph);
501 cam_periph_release(periph);
505 unit = periph->unit_number;
506 softc = (struct da_softc *)periph->softc;
508 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
509 ("daopen: dev=%s (unit %d)\n", devtoname(dev),
512 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
513 /* Invalidate our pack information. */
514 disk_invalidate(&softc->disk);
515 softc->flags &= ~DA_FLAG_PACK_INVALID;
518 error = dacheckmedia(periph);
519 softc->flags |= DA_FLAG_OPEN;
522 struct ccb_getdev cgd;
524 /* Build disk information structure */
525 bzero(&info, sizeof(info));
526 info.d_type = DTYPE_SCSI;
529 * Grab the inquiry data to get the vendor and product names.
530 * Put them in the typename and packname for the label.
532 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
533 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
534 xpt_action((union ccb *)&cgd);
537 * Check to see whether or not the blocksize is set yet.
538 * If it isn't, set it and then clear the blocksize
539 * unavailable flag for the device statistics.
541 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
542 softc->device_stats.block_size = softc->params.secsize;
543 softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
548 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
549 (softc->quirks & DA_Q_NO_PREVENT) == 0)
550 daprevent(periph, PR_PREVENT);
552 softc->flags &= ~DA_FLAG_OPEN;
553 cam_periph_release(periph);
555 cam_periph_unhold(periph, 1);
560 daclose(struct dev_close_args *ap)
562 cdev_t dev = ap->a_head.a_dev;
563 struct cam_periph *periph;
564 struct da_softc *softc;
569 periph = cam_extend_get(daperiphs, unit);
573 cam_periph_lock(periph);
574 if ((error = cam_periph_hold(periph, 0)) != 0) {
575 cam_periph_unlock(periph);
576 cam_periph_release(periph);
580 softc = (struct da_softc *)periph->softc;
582 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
585 ccb = cam_periph_getccb(periph, /*priority*/1);
586 ccb->ccb_h.ccb_state = DA_CCB_POLLED;
588 scsi_synchronize_cache(&ccb->csio,
592 /*begin_lba*/0,/* Cover the whole disk */
597 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
598 /*sense_flags*/SF_RETRY_UA,
599 &softc->device_stats);
601 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
602 if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
603 CAM_SCSI_STATUS_ERROR) {
605 int sense_key, error_code;
607 scsi_extract_sense(&ccb->csio.sense_data,
611 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
612 scsi_sense_print(&ccb->csio);
614 xpt_print(periph->path, "Synchronize cache "
615 "failed, status == 0x%x, scsi status == "
616 "0x%x\n", ccb->csio.ccb_h.status,
617 ccb->csio.scsi_status);
621 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
622 cam_release_devq(ccb->ccb_h.path,
628 xpt_release_ccb(ccb);
632 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
633 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
634 daprevent(periph, PR_ALLOW);
636 * If we've got removeable media, mark the blocksize as
637 * unavailable, since it could change when new media is
640 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
644 * Don't compound any ref counting software bugs with more.
646 if (softc->flags & DA_FLAG_OPEN) {
647 softc->flags &= ~DA_FLAG_OPEN;
648 cam_periph_release(periph);
650 xpt_print(periph->path,
651 "daclose() called on an already closed device!\n");
653 cam_periph_unhold(periph, 1);
658 * Actually translate the requested transfer into one the physical driver
659 * can understand. The transfer is described by a buf and will include
660 * only one physical transfer.
663 dastrategy(struct dev_strategy_args *ap)
665 cdev_t dev = ap->a_head.a_dev;
666 struct bio *bio = ap->a_bio;
667 struct buf *bp = bio->bio_buf;
668 struct cam_periph *periph;
669 struct da_softc *softc;
673 periph = cam_extend_get(daperiphs, unit);
674 if (periph == NULL) {
678 softc = (struct da_softc *)periph->softc;
680 cam_periph_lock(periph);
684 * check it's not too big a transfer for our adapter
686 scsi_minphys(bp, &sd_switch);
690 * Mask interrupts so that the pack cannot be invalidated until
691 * after we are in the queue. Otherwise, we might not properly
692 * clean up one of the buffers.
696 * If the device has been made invalid, error out
698 if ((softc->flags & DA_FLAG_PACK_INVALID)) {
699 cam_periph_unlock(periph);
705 * Place it in the queue of disk activities for this disk
707 if (bp->b_cmd == BUF_CMD_WRITE || bp->b_cmd == BUF_CMD_FLUSH)
708 bioqdisksort(&softc->bio_queue_wr, bio);
709 else if (bp->b_cmd == BUF_CMD_FREEBLKS)
710 bioqdisksort(&softc->bio_queue_trim, bio);
712 bioqdisksort(&softc->bio_queue_rd, bio);
715 * Schedule ourselves for performing the work.
717 xpt_schedule(periph, /* XXX priority */1);
718 cam_periph_unlock(periph);
722 bp->b_flags |= B_ERROR;
725 * Correctly set the buf to indicate a completed xfer
727 bp->b_resid = bp->b_bcount;
733 dadump(struct dev_dump_args *ap)
735 cdev_t dev = ap->a_head.a_dev;
736 struct cam_periph *periph;
737 struct da_softc *softc;
740 struct ccb_scsiio csio;
743 periph = cam_extend_get(daperiphs, unit);
747 softc = (struct da_softc *)periph->softc;
748 cam_periph_lock(periph);
749 secsize = softc->params.secsize; /* XXX: or ap->a_secsize? */
751 if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
752 cam_periph_unlock(periph);
757 * because length == 0 means we are supposed to flush cache, we only
758 * try to write something if length > 0.
760 if (ap->a_length > 0) {
761 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
762 csio.ccb_h.flags |= CAM_POLLED;
763 csio.ccb_h.ccb_state = DA_CCB_DUMP;
764 scsi_read_write(&csio,
770 /*minimum_cmd_size*/ softc->minimum_cmd_size,
771 ap->a_offset / secsize,
772 ap->a_length / secsize,
773 /*data_ptr*/(u_int8_t *) ap->a_virtual,
774 /*dxfer_len*/ap->a_length,
775 /*sense_len*/SSD_FULL_SIZE,
776 DA_DEFAULT_TIMEOUT * 1000);
777 xpt_polled_action((union ccb *)&csio);
779 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
780 kprintf("Aborting dump due to I/O error.\n");
781 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
782 CAM_SCSI_STATUS_ERROR)
783 scsi_sense_print(&csio);
785 kprintf("status == 0x%x, scsi status == 0x%x\n",
786 csio.ccb_h.status, csio.scsi_status);
789 cam_periph_unlock(periph);
794 * Sync the disk cache contents to the physical media.
796 if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
798 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
799 csio.ccb_h.ccb_state = DA_CCB_DUMP;
800 scsi_synchronize_cache(&csio,
804 /*begin_lba*/0,/* Cover the whole disk */
808 xpt_polled_action((union ccb *)&csio);
810 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
811 if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
812 CAM_SCSI_STATUS_ERROR) {
814 int sense_key, error_code;
816 scsi_extract_sense(&csio.sense_data,
820 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
821 scsi_sense_print(&csio);
823 xpt_print(periph->path, "Synchronize cache "
824 "failed, status == 0x%x, scsi status == "
825 "0x%x\n", csio.ccb_h.status,
830 cam_periph_unlock(periph);
840 * Create our extend array for storing the devices we attach to.
842 daperiphs = cam_extend_new();
843 if (daperiphs == NULL) {
844 kprintf("da: Failed to alloc extend array!\n");
849 * Install a global async callback. This callback will
850 * receive async callbacks like "new device found".
852 status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
854 if (status != CAM_REQ_CMP) {
855 kprintf("da: Failed to attach master async callback "
856 "due to status 0x%x!\n", status);
858 /* Register our shutdown event handler */
859 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
860 NULL, SHUTDOWN_PRI_SECOND)) == NULL)
861 kprintf("%s: shutdown event registration failed!\n",
867 daoninvalidate(struct cam_periph *periph)
869 struct da_softc *softc;
871 softc = (struct da_softc *)periph->softc;
874 * De-register any async callbacks.
876 xpt_register_async(0, daasync, periph, periph->path);
878 softc->flags |= DA_FLAG_PACK_INVALID;
881 * Return all queued I/O with ENXIO.
882 * XXX Handle any transactions queued to the card
883 * with XPT_ABORT_CCB.
885 daflushbioq(&softc->bio_queue_trim, ENXIO);
886 daflushbioq(&softc->bio_queue_wr, ENXIO);
887 daflushbioq(&softc->bio_queue_rd, ENXIO);
888 xpt_print(periph->path, "lost device\n");
892 daflushbioq(struct bio_queue_head *bioq, int error)
897 while ((q_bio = bioq_first(bioq)) != NULL){
898 bioq_remove(bioq, q_bio);
899 q_bp = q_bio->bio_buf;
900 q_bp->b_resid = q_bp->b_bcount;
901 q_bp->b_error = error;
902 q_bp->b_flags |= B_ERROR;
908 dacleanup(struct cam_periph *periph)
910 struct da_softc *softc;
912 softc = (struct da_softc *)periph->softc;
914 devstat_remove_entry(&softc->device_stats);
915 cam_extend_release(daperiphs, periph->unit_number);
916 xpt_print(periph->path, "removing device entry\n");
918 * If we can't free the sysctl tree, oh well...
920 if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
921 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
922 xpt_print(periph->path, "can't remove sysctl context\n");
924 periph->softc = NULL;
925 if (softc->disk.d_rawdev) {
926 cam_periph_unlock(periph);
927 disk_destroy(&softc->disk);
928 cam_periph_lock(periph);
931 kfree(softc, M_DEVBUF);
935 daasync(void *callback_arg, u_int32_t code,
936 struct cam_path *path, void *arg)
938 struct cam_periph *periph;
940 periph = (struct cam_periph *)callback_arg;
943 case AC_FOUND_DEVICE:
945 struct ccb_getdev *cgd;
948 cgd = (struct ccb_getdev *)arg;
952 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
953 && SID_TYPE(&cgd->inq_data) != T_RBC
954 && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
958 * Don't complain if a valid peripheral is already attached.
960 periph = cam_periph_find(cgd->ccb_h.path, "da");
961 if (periph && (periph->flags & CAM_PERIPH_INVALID) == 0)
965 * Allocate a peripheral instance for
966 * this device and start the probe
969 status = cam_periph_alloc(daregister, daoninvalidate,
971 "da", CAM_PERIPH_BIO,
972 cgd->ccb_h.path, daasync,
973 AC_FOUND_DEVICE, cgd);
975 if (status != CAM_REQ_CMP && status != CAM_REQ_INPROG) {
976 kprintf("%s: Unable to attach to new device "
977 "due to status 0x%x\n", __func__, status);
984 struct da_softc *softc;
985 struct ccb_hdr *ccbh;
987 softc = (struct da_softc *)periph->softc;
989 * Don't fail on the expected unit attention
992 softc->flags |= DA_FLAG_RETRY_UA;
993 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
994 ccbh->ccb_state |= DA_CCB_RETRY_UA;
998 cam_periph_async(periph, code, path, arg);
1004 dasysctlinit(void *context, int pending)
1006 struct cam_periph *periph;
1007 struct da_softc *softc;
1008 char tmpstr[80], tmpstr2[80];
1010 periph = (struct cam_periph *)context;
1011 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
1015 softc = (struct da_softc *)periph->softc;
1016 ksnprintf(tmpstr, sizeof(tmpstr),
1017 "CAM DA unit %d", periph->unit_number);
1018 ksnprintf(tmpstr2, sizeof(tmpstr2),
1019 "%d", periph->unit_number);
1021 sysctl_ctx_free(&softc->sysctl_ctx);
1022 sysctl_ctx_init(&softc->sysctl_ctx);
1023 softc->flags |= DA_FLAG_SCTX_INIT;
1024 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1025 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1026 CTLFLAG_RD, 0, tmpstr);
1027 if (softc->sysctl_tree == NULL) {
1028 kprintf("%s: unable to allocate sysctl tree\n", __func__);
1029 cam_periph_release(periph);
1034 * Now register the sysctl handler, so the user can the value on
1037 SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1038 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1039 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1040 "Minimum CDB size");
1042 /* Only create the option if the device supports TRIM */
1043 if (softc->disk.d_info.d_trimflag) {
1044 SYSCTL_ADD_INT(&softc->sysctl_ctx,
1045 SYSCTL_CHILDREN(softc->sysctl_tree),
1049 &softc->trim_enabled,
1051 "Enable TRIM for this device (SSD))");
1054 cam_periph_release(periph);
1058 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1062 value = *(int *)arg1;
1064 error = sysctl_handle_int(oidp, &value, 0, req);
1067 || (req->newptr == NULL))
1071 * Acceptable values here are 6, 10 or 12, or 16.
1075 else if ((value > 6)
1078 else if ((value > 10)
1081 else if (value > 12)
1084 *(int *)arg1 = value;
1090 daregister(struct cam_periph *periph, void *arg)
1092 struct da_softc *softc;
1093 struct ccb_pathinq cpi;
1094 struct ccb_getdev *cgd;
1098 cgd = (struct ccb_getdev *)arg;
1099 if (periph == NULL) {
1100 kprintf("%s: periph was NULL!!\n", __func__);
1101 return(CAM_REQ_CMP_ERR);
1105 kprintf("%s: no getdev CCB, can't register device\n",
1107 return(CAM_REQ_CMP_ERR);
1110 softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1111 sysctl_ctx_init(&softc->sysctl_ctx);
1112 LIST_INIT(&softc->pending_ccbs);
1113 softc->state = DA_STATE_PROBE;
1114 bioq_init(&softc->bio_queue_trim);
1115 bioq_init(&softc->bio_queue_rd);
1116 bioq_init(&softc->bio_queue_wr);
1117 if (SID_IS_REMOVABLE(&cgd->inq_data))
1118 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1119 if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1120 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1122 /* Used to get TRIM status from AHCI driver */
1123 if (cgd->inq_data.vendor_specific1[0] == 1) {
1125 * max number of lba ranges an SSD can handle in a single
1126 * TRIM command. vendor_specific1[1] is the num of 512-byte
1127 * blocks the SSD reports that can be passed in a TRIM cmd.
1129 softc->trim_max_ranges =
1130 min(cgd->inq_data.vendor_specific1[1] * 64, TRIM_MAX_RANGES);
1133 periph->softc = softc;
1135 cam_extend_set(daperiphs, periph->unit_number, periph);
1138 * See if this device has any quirks.
1140 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1141 (caddr_t)da_quirk_table,
1142 NELEM(da_quirk_table),
1143 sizeof(*da_quirk_table), scsi_inquiry_match);
1146 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1148 softc->quirks = DA_Q_NONE;
1151 * Unconditionally disable the synchronize cache command for
1152 * usb attachments. It's just impossible to determine if the
1153 * device supports it or not and if it doesn't the port can
1156 if (strncmp(periph->sim->sim_name, "umass", 4) == 0) {
1157 softc->quirks |= DA_Q_NO_SYNC_CACHE;
1160 TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1162 /* Check if the SIM does not want 6 byte commands */
1163 bzero(&cpi, sizeof(cpi));
1164 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1165 cpi.ccb_h.func_code = XPT_PATH_INQ;
1166 xpt_action((union ccb *)&cpi);
1167 if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1168 softc->quirks |= DA_Q_NO_6_BYTE;
1171 * RBC devices don't have to support READ(6), only READ(10).
1173 if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1174 softc->minimum_cmd_size = 10;
1176 softc->minimum_cmd_size = 6;
1179 * Load the user's default, if any.
1181 ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1182 periph->unit_number);
1183 TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1186 * 6, 10, 12, and 16 are the currently permissible values.
1188 if (softc->minimum_cmd_size < 6)
1189 softc->minimum_cmd_size = 6;
1190 else if ((softc->minimum_cmd_size > 6)
1191 && (softc->minimum_cmd_size <= 10))
1192 softc->minimum_cmd_size = 10;
1193 else if ((softc->minimum_cmd_size > 10)
1194 && (softc->minimum_cmd_size <= 12))
1195 softc->minimum_cmd_size = 12;
1196 else if (softc->minimum_cmd_size > 12)
1197 softc->minimum_cmd_size = 16;
1200 * The DA driver supports a blocksize, but
1201 * we don't know the blocksize until we do
1202 * a read capacity. So, set a flag to
1203 * indicate that the blocksize is
1204 * unavailable right now. We'll clear the
1205 * flag as soon as we've done a read capacity.
1207 devstat_add_entry(&softc->device_stats, "da",
1208 periph->unit_number, 0,
1209 DEVSTAT_BS_UNAVAILABLE,
1210 SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1211 DEVSTAT_PRIORITY_DISK);
1214 * Register this media as a disk
1216 CAM_SIM_UNLOCK(periph->sim);
1217 disk_create(periph->unit_number, &softc->disk, &da_ops);
1218 if (cpi.maxio == 0 || cpi.maxio > MAXPHYS)
1219 softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1221 softc->disk.d_rawdev->si_iosize_max = cpi.maxio;
1223 kprintf("%s%d: si_iosize_max:%d\n",
1224 periph->periph_name,
1225 periph->unit_number,
1226 softc->disk.d_rawdev->si_iosize_max);
1228 CAM_SIM_LOCK(periph->sim);
1231 * Add async callbacks for bus reset and
1232 * bus device reset calls. I don't bother
1233 * checking if this fails as, in most cases,
1234 * the system will function just fine without
1235 * them and the only alternative would be to
1236 * not attach the device on failure.
1238 xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1239 daasync, periph, periph->path);
1242 * Take an exclusive refcount on the periph while dastart is called
1243 * to finish the probe. The reference will be dropped in dadone at
1246 cam_periph_hold(periph, 0);
1247 xpt_schedule(periph, /*priority*/5);
1249 return(CAM_REQ_CMP);
1253 dastart(struct cam_periph *periph, union ccb *start_ccb)
1255 struct da_softc *softc;
1257 softc = (struct da_softc *)periph->softc;
1259 switch (softc->state) {
1260 case DA_STATE_NORMAL:
1262 /* Pull a buffer from the queue and get going on it */
1271 * See if there is a buf with work for us to do..
1273 bio_rd = bioq_first(&softc->bio_queue_rd);
1274 bio_wr = bioq_first(&softc->bio_queue_wr);
1276 if (periph->immediate_priority <= periph->pinfo.priority) {
1277 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1278 ("queuing for immediate ccb\n"));
1279 start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1280 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1282 periph->immediate_priority = CAM_PRIORITY_NONE;
1283 wakeup(&periph->ccb_list);
1284 if (bio_rd || bio_wr) {
1286 * Have more work to do, so ensure we stay
1289 xpt_schedule(periph, /* XXX priority */1);
1294 /* Run the trim command if not already running */
1295 if (!softc->trim_running &&
1296 (bio = bioq_first(&softc->bio_queue_trim)) != NULL) {
1297 struct trim_request *req = &softc->trim_req;
1299 int bps = 0, ranges = 0;
1301 softc->trim_running = 1;
1302 bzero(req, sizeof(*req));
1309 count = bp->b_bcount / softc->params.secsize;
1310 lba = bio1->bio_offset/softc->params.secsize;
1312 kprintf("trim lba:%llu boff:%llu count:%d\n",
1313 (unsigned long long) lba,
1314 (unsigned long long) bio1->bio_offset,
1317 bioq_remove(&softc->bio_queue_trim, bio1);
1319 int c = min(count, 0xffff);
1320 int off = ranges * 8;
1322 req->data[off + 0] = lba & 0xff;
1323 req->data[off + 1] = (lba >> 8) & 0xff;
1324 req->data[off + 2] = (lba >> 16) & 0xff;
1325 req->data[off + 3] = (lba >> 24) & 0xff;
1326 req->data[off + 4] = (lba >> 32) & 0xff;
1327 req->data[off + 5] = (lba >> 40) & 0xff;
1328 req->data[off + 6] = c & 0xff;
1329 req->data[off + 7] = (c >> 8) & 0xff;
1335 /* Try to merge multiple TRIM requests */
1336 req->bios[bps++] = bio1;
1337 bio1 = bioq_first(&softc->bio_queue_trim);
1339 bio1->bio_buf->b_bcount / softc->params.secsize >
1340 (softc->trim_max_ranges - ranges) * 0xffff)
1345 cam_fill_csio(&start_ccb->csio,
1351 ((ranges +63)/64)*512,
1353 sizeof(struct scsi_rw_6),
1354 da_default_timeout*2);
1356 start_ccb->ccb_h.ccb_state = DA_CCB_TRIM;
1357 LIST_INSERT_HEAD(&softc->pending_ccbs,
1358 &start_ccb->ccb_h, periph_links.le);
1359 start_ccb->csio.ccb_h.func_code = XPT_TRIM;
1360 start_ccb->ccb_h.ccb_bio = bio;
1361 devstat_start_transaction(&softc->device_stats);
1362 xpt_action(start_ccb);
1363 xpt_schedule(periph, 1);
1368 * Select a read or write buffer to queue. Limit the number
1369 * of tags dedicated to reading or writing, giving reads
1372 * Writes to modern hard drives go into the HDs cache and
1373 * return completion nearly instantly. That is until the
1374 * cache becomes full. When the HDs cache becomes full
1375 * write commands will begin to stall. If all available
1376 * tags are taken up by writes which saturate the drive
1377 * reads will become tag-starved.
1379 * A similar situation can occur with reads. With many
1380 * parallel readers all tags can be taken up by reads
1381 * and prevent any writes from draining, even if the HD's
1382 * cache is not full.
1384 limit = periph->sim->max_tagged_dev_openings * 2 / 3 + 1;
1388 static long savets2;
1389 if (1 || time_uptime != savets2 || (ticks != savets && (softc->outstanding_cmds_rd || softc->outstanding_cmds_wr))) {
1390 kprintf("%d %d (%d)\n",
1391 softc->outstanding_cmds_rd,
1392 softc->outstanding_cmds_wr,
1395 savets2 = time_uptime;
1398 if (bio_rd && softc->outstanding_cmds_rd < limit) {
1400 bioq_remove(&softc->bio_queue_rd, bio);
1401 } else if (bio_wr && softc->outstanding_cmds_wr < limit) {
1403 bioq_remove(&softc->bio_queue_wr, bio);
1406 softc->flags |= DA_FLAG_RD_LIMIT;
1408 softc->flags |= DA_FLAG_WR_LIMIT;
1409 xpt_release_ccb(start_ccb);
1414 * We can queue new work.
1418 devstat_start_transaction(&softc->device_stats);
1420 tag_code = MSG_SIMPLE_Q_TAG;
1426 * Block read/write op
1428 KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1432 da_retry_count, /* retries */
1435 (bp->b_cmd == BUF_CMD_READ),
1437 softc->minimum_cmd_size,
1438 bio->bio_offset / softc->params.secsize,
1439 bp->b_bcount / softc->params.secsize,
1442 SSD_FULL_SIZE, /* sense_len */
1443 da_default_timeout * 1000
1448 * Silently complete a flush request if the device
1451 if (softc->quirks & DA_Q_NO_SYNC_CACHE) {
1452 xpt_release_ccb(start_ccb);
1454 devstat_end_transaction_buf(
1455 &softc->device_stats, bp);
1458 scsi_synchronize_cache(
1461 dadone, /* cbfcnp */
1464 0, /* count (whole disk) */
1466 da_default_timeout*1000 /* timeout */
1470 case BUF_CMD_FREEBLKS:
1471 if (softc->disk.d_info.d_trimflag & DA_FLAG_CAN_TRIM){
1472 start_ccb->csio.ccb_h.func_code = XPT_TRIM;
1476 xpt_release_ccb(start_ccb);
1478 panic("dastart: unrecognized bio cmd %d", bp->b_cmd);
1479 break; /* NOT REACHED */
1483 * Block out any asyncronous callbacks
1484 * while we touch the pending ccb list.
1487 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1488 LIST_INSERT_HEAD(&softc->pending_ccbs,
1489 &start_ccb->ccb_h, periph_links.le);
1490 if (bp->b_cmd == BUF_CMD_WRITE ||
1491 bp->b_cmd == BUF_CMD_FLUSH) {
1492 ++softc->outstanding_cmds_wr;
1494 ++softc->outstanding_cmds_rd;
1497 /* We expect a unit attention from this device */
1498 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1499 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1500 softc->flags &= ~DA_FLAG_RETRY_UA;
1503 start_ccb->ccb_h.ccb_bio = bio;
1504 xpt_action(start_ccb);
1508 * Be sure we stay scheduled if we have more work to do.
1510 if (bioq_first(&softc->bio_queue_rd) ||
1511 bioq_first(&softc->bio_queue_wr)) {
1512 xpt_schedule(periph, 1);
1516 case DA_STATE_PROBE:
1518 struct ccb_scsiio *csio;
1519 struct scsi_read_capacity_data *rcap;
1521 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
1522 csio = &start_ccb->csio;
1523 scsi_read_capacity(csio,
1530 start_ccb->ccb_h.ccb_bio = NULL;
1531 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1532 xpt_action(start_ccb);
1535 case DA_STATE_PROBE2:
1537 struct ccb_scsiio *csio;
1538 struct scsi_read_capacity_data_16 *rcaplong;
1540 rcaplong = kmalloc(sizeof(*rcaplong), M_SCSIDA,
1541 M_INTWAIT | M_ZERO);
1542 csio = &start_ccb->csio;
1543 scsi_read_capacity_16(csio,
1546 /*tag_action*/ MSG_SIMPLE_Q_TAG,
1551 /*sense_len*/ SSD_FULL_SIZE,
1553 start_ccb->ccb_h.ccb_bio = NULL;
1554 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1555 xpt_action(start_ccb);
1562 cmd6workaround(union ccb *ccb)
1564 struct scsi_rw_6 cmd6;
1565 struct scsi_rw_10 *cmd10;
1566 struct da_softc *softc;
1570 cdb = ccb->csio.cdb_io.cdb_bytes;
1572 /* Translation only possible if CDB is an array and cmd is R/W6 */
1573 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1574 (*cdb != READ_6 && *cdb != WRITE_6))
1577 xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1578 "increasing minimum_cmd_size to 10.\n");
1579 softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1580 softc->minimum_cmd_size = 10;
1582 bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1583 cmd10 = (struct scsi_rw_10 *)cdb;
1584 cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1586 scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1587 cmd10->reserved = 0;
1588 scsi_ulto2b(cmd6.length, cmd10->length);
1589 cmd10->control = cmd6.control;
1590 ccb->csio.cdb_len = sizeof(*cmd10);
1592 /* Requeue request, unfreezing queue if necessary */
1593 frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1594 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1597 cam_release_devq(ccb->ccb_h.path,
1601 /*getcount_only*/0);
1607 dadone(struct cam_periph *periph, union ccb *done_ccb)
1609 struct da_softc *softc;
1610 struct ccb_scsiio *csio;
1611 struct disk_info info;
1613 softc = (struct da_softc *)periph->softc;
1614 csio = &done_ccb->csio;
1615 switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1616 case DA_CCB_BUFFER_IO:
1623 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1625 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1629 if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1634 error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1635 if (error == ERESTART) {
1637 * A retry was scheuled, so
1643 if (error == ENXIO) {
1645 * Catastrophic error. Mark our pack as
1649 * XXX See if this is really a media
1652 xpt_print(periph->path,
1653 "Invalidating pack\n");
1654 softc->flags |= DA_FLAG_PACK_INVALID;
1658 * Return all queued write I/O's with EIO
1659 * so the client can retry these I/Os in the
1660 * proper order should it attempt to recover.
1662 * Leave read I/O's alone.
1664 daflushbioq(&softc->bio_queue_wr, EIO);
1665 bp->b_error = error;
1666 bp->b_resid = bp->b_bcount;
1667 bp->b_flags |= B_ERROR;
1669 bp->b_resid = csio->resid;
1671 if (bp->b_resid != 0)
1672 bp->b_flags |= B_ERROR;
1674 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1675 cam_release_devq(done_ccb->ccb_h.path,
1679 /*getcount_only*/0);
1681 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1682 panic("REQ_CMP with QFRZN");
1683 bp->b_resid = csio->resid;
1684 if (csio->resid > 0)
1685 bp->b_flags |= B_ERROR;
1689 * Block out any asyncronous callbacks
1690 * while we touch the pending ccb list.
1692 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1693 if (bp->b_cmd == BUF_CMD_WRITE || bp->b_cmd == BUF_CMD_FLUSH) {
1694 --softc->outstanding_cmds_wr;
1695 if (softc->flags & DA_FLAG_WR_LIMIT) {
1696 softc->flags &= ~DA_FLAG_WR_LIMIT;
1700 --softc->outstanding_cmds_rd;
1701 if (softc->flags & DA_FLAG_RD_LIMIT) {
1702 softc->flags &= ~DA_FLAG_RD_LIMIT;
1707 devstat_end_transaction_buf(&softc->device_stats, bp);
1708 if ((csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) ==
1710 struct trim_request *req =
1711 (struct trim_request *) csio->data_ptr;
1714 for (i = 1; i < softc->trim_max_ranges &&
1715 req->bios[i]; i++) {
1716 struct bio *bp1 = req->bios[i];
1718 bp1->bio_buf->b_resid = bp->b_resid;
1719 bp1->bio_buf->b_error = bp->b_error;
1720 if (bp->b_flags & B_ERROR)
1721 bp1->bio_buf->b_flags |= B_ERROR;
1724 softc->trim_running = 0;
1726 xpt_schedule(periph,1);
1732 xpt_schedule(periph, /*priority*/1);
1739 struct scsi_read_capacity_data *rdcap;
1740 struct scsi_read_capacity_data_16 *rcaplong;
1741 char announce_buf[80];
1746 if (softc->state == DA_STATE_PROBE)
1747 rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1749 rcaplong = (struct scsi_read_capacity_data_16 *)
1752 bzero(&info, sizeof(info));
1753 info.d_type = DTYPE_SCSI;
1754 info.d_serialno = xpt_path_serialno(periph->path);
1756 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1757 struct disk_params *dp;
1758 uint32_t block_size;
1761 if (softc->state == DA_STATE_PROBE) {
1762 block_size = scsi_4btoul(rdcap->length);
1763 maxsector = scsi_4btoul(rdcap->addr);
1766 * According to SBC-2, if the standard 10
1767 * byte READ CAPACITY command returns 2^32,
1768 * we should issue the 16 byte version of
1769 * the command, since the device in question
1770 * has more sectors than can be represented
1771 * with the short version of the command.
1773 if (maxsector == 0xffffffff) {
1774 softc->state = DA_STATE_PROBE2;
1775 kfree(rdcap, M_SCSIDA);
1776 xpt_release_ccb(done_ccb);
1777 xpt_schedule(periph, /*priority*/5);
1781 block_size = scsi_4btoul(rcaplong->length);
1782 maxsector = scsi_8btou64(rcaplong->addr);
1784 dasetgeom(periph, block_size, maxsector);
1785 dp = &softc->params;
1786 ksnprintf(announce_buf, sizeof(announce_buf),
1787 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1788 (uintmax_t) (((uintmax_t)dp->secsize *
1789 dp->sectors) / (1024*1024)),
1790 (uintmax_t)dp->sectors,
1791 dp->secsize, dp->heads, dp->secs_per_track,
1794 info.d_media_blksize = softc->params.secsize;
1795 info.d_media_blocks = softc->params.sectors;
1796 info.d_media_size = 0;
1797 info.d_secpertrack = softc->params.secs_per_track;
1798 info.d_nheads = softc->params.heads;
1799 info.d_ncylinders = softc->params.cylinders;
1800 info.d_secpercyl = softc->params.heads *
1801 softc->params.secs_per_track;
1802 info.d_serialno = xpt_path_serialno(periph->path);
1807 announce_buf[0] = '\0';
1810 * Retry any UNIT ATTENTION type errors. They
1811 * are expected at boot.
1813 error = daerror(done_ccb, CAM_RETRY_SELTO,
1814 SF_RETRY_UA|SF_NO_PRINT);
1815 if (error == ERESTART) {
1817 * A retry was scheuled, so
1821 } else if (error != 0) {
1822 struct scsi_sense_data *sense;
1824 int sense_key, error_code;
1827 struct ccb_getdev cgd;
1829 /* Don't wedge this device's queue */
1830 status = done_ccb->ccb_h.status;
1831 if ((status & CAM_DEV_QFRZN) != 0)
1832 cam_release_devq(done_ccb->ccb_h.path,
1836 /*getcount_only*/0);
1839 xpt_setup_ccb(&cgd.ccb_h,
1840 done_ccb->ccb_h.path,
1842 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1843 xpt_action((union ccb *)&cgd);
1845 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1846 || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1847 || ((status & CAM_AUTOSNS_VALID) == 0))
1853 sense = &csio->sense_data;
1854 scsi_extract_sense(sense, &error_code,
1859 * Attach to anything that claims to be a
1860 * direct access or optical disk device,
1861 * as long as it doesn't return a "Logical
1862 * unit not supported" (0x25) error.
1864 if ((have_sense) && (asc != 0x25)
1865 && (error_code == SSD_CURRENT_ERROR)) {
1866 const char *sense_key_desc;
1867 const char *asc_desc;
1869 scsi_sense_desc(sense_key, asc, ascq,
1873 ksnprintf(announce_buf,
1874 sizeof(announce_buf),
1875 "Attempt to query device "
1876 "size failed: %s, %s",
1879 info.d_media_blksize = 512;
1886 xpt_print(periph->path,
1887 "got CAM status %#x\n",
1888 done_ccb->ccb_h.status);
1891 xpt_print(periph->path, "fatal error, "
1892 "failed to attach to device\n");
1895 * Free up resources.
1897 cam_periph_invalidate(periph);
1901 kfree(csio->data_ptr, M_SCSIDA);
1902 if (announce_buf[0] != '\0') {
1903 xpt_announce_periph(periph, announce_buf);
1905 * Create our sysctl variables, now that we know
1906 * we have successfully attached.
1908 taskqueue_enqueue(taskqueue_thread[mycpuid],
1909 &softc->sysctl_task);
1912 if (softc->trim_max_ranges) {
1913 softc->disk.d_info.d_trimflag |= DA_FLAG_CAN_TRIM;
1914 kprintf("%s%d: supports TRIM\n",
1915 periph->periph_name,
1916 periph->unit_number);
1918 softc->state = DA_STATE_NORMAL;
1920 * Since our peripheral may be invalidated by an error
1921 * above or an external event, we must release our CCB
1922 * before releasing the probe lock on the peripheral.
1923 * The peripheral will only go away once the last lock
1924 * is removed, and we need it around for the CCB release
1927 xpt_release_ccb(done_ccb);
1928 cam_periph_unhold(periph, 0);
1930 CAM_SIM_UNLOCK(periph->sim);
1931 disk_setdiskinfo(&softc->disk, &info);
1932 CAM_SIM_LOCK(periph->sim);
1936 case DA_CCB_WAITING:
1938 /* Caller will release the CCB */
1939 wakeup(&done_ccb->ccb_h.cbfcnp);
1943 /* No-op. We're polling */
1946 /* Caller releases ccb */
1947 wakeup(&done_ccb->ccb_h.cbfcnp);
1952 xpt_release_ccb(done_ccb);
1956 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1958 struct da_softc *softc;
1959 struct cam_periph *periph;
1962 periph = xpt_path_periph(ccb->ccb_h.path);
1963 softc = (struct da_softc *)periph->softc;
1966 * Automatically detect devices that do not support
1967 * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1970 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1971 error = cmd6workaround(ccb);
1972 } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1973 CAM_SCSI_STATUS_ERROR)
1974 && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1975 && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1976 && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1977 && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1978 int sense_key, error_code, asc, ascq;
1980 scsi_extract_sense(&ccb->csio.sense_data,
1981 &error_code, &sense_key, &asc, &ascq);
1982 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1983 error = cmd6workaround(ccb);
1985 if (error == ERESTART)
1990 * Until we have a better way of doing pack validation,
1991 * don't treat UAs as errors.
1993 sense_flags |= SF_RETRY_UA;
1994 return(cam_periph_error(ccb, cam_flags, sense_flags,
1995 &softc->saved_ccb));
1999 daprevent(struct cam_periph *periph, int action)
2001 struct da_softc *softc;
2005 softc = (struct da_softc *)periph->softc;
2007 if (((action == PR_ALLOW)
2008 && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
2009 || ((action == PR_PREVENT)
2010 && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
2014 ccb = cam_periph_getccb(periph, /*priority*/1);
2015 ccb->ccb_h.ccb_state = DA_CCB_POLLED;
2017 scsi_prevent(&ccb->csio,
2025 error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
2026 SF_RETRY_UA, &softc->device_stats);
2029 if (action == PR_ALLOW)
2030 softc->flags &= ~DA_FLAG_PACK_LOCKED;
2032 softc->flags |= DA_FLAG_PACK_LOCKED;
2035 xpt_release_ccb(ccb);
2039 * Check media on open, e.g. card reader devices which had no initial media.
2042 dacheckmedia(struct cam_periph *periph)
2044 struct disk_params *dp;
2045 struct da_softc *softc;
2046 struct disk_info info;
2049 softc = (struct da_softc *)periph->softc;
2050 dp = &softc->params;
2052 error = dagetcapacity(periph);
2055 * Only reprobe on initial open and if the media is removable.
2057 * NOTE: If we setdiskinfo() it will take the device probe
2058 * a bit of time to probe the slices and partitions,
2059 * and mess up booting. So avoid if nothing has changed.
2062 if (softc->flags & DA_FLAG_OPEN)
2064 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) == 0)
2067 bzero(&info, sizeof(info));
2068 info.d_type = DTYPE_SCSI;
2069 info.d_serialno = xpt_path_serialno(periph->path);
2072 CAM_SIM_UNLOCK(periph->sim);
2073 info.d_media_blksize = softc->params.secsize;
2074 info.d_media_blocks = softc->params.sectors;
2075 info.d_media_size = 0;
2076 info.d_secpertrack = softc->params.secs_per_track;
2077 info.d_nheads = softc->params.heads;
2078 info.d_ncylinders = softc->params.cylinders;
2079 info.d_secpercyl = softc->params.heads *
2080 softc->params.secs_per_track;
2081 info.d_serialno = xpt_path_serialno(periph->path);
2082 if (info.d_media_blocks != softc->disk.d_info.d_media_blocks) {
2083 kprintf("%s%d: open removable media: "
2084 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)\n",
2085 periph->periph_name, periph->unit_number,
2086 (uintmax_t)(((uintmax_t)dp->secsize *
2087 dp->sectors) / (1024*1024)),
2088 (uintmax_t)dp->sectors, dp->secsize,
2089 dp->heads, dp->secs_per_track, dp->cylinders);
2090 disk_setdiskinfo(&softc->disk, &info);
2092 CAM_SIM_LOCK(periph->sim);
2094 kprintf("%s%d: open removable media: no media present\n",
2095 periph->periph_name, periph->unit_number);
2096 info.d_media_blksize = 512;
2097 disk_setdiskinfo(&softc->disk, &info);
2103 dagetcapacity(struct cam_periph *periph)
2105 struct da_softc *softc;
2107 struct scsi_read_capacity_data *rcap;
2108 struct scsi_read_capacity_data_16 *rcaplong;
2113 softc = (struct da_softc *)periph->softc;
2118 /* Do a read capacity */
2119 rcap = (struct scsi_read_capacity_data *)kmalloc(sizeof(*rcaplong),
2120 M_SCSIDA, M_INTWAIT);
2122 ccb = cam_periph_getccb(periph, /*priority*/1);
2123 ccb->ccb_h.ccb_state = DA_CCB_POLLED;
2125 scsi_read_capacity(&ccb->csio,
2132 ccb->ccb_h.ccb_bio = NULL;
2134 error = cam_periph_runccb(ccb, daerror,
2135 /*cam_flags*/CAM_RETRY_SELTO,
2136 /*sense_flags*/SF_RETRY_UA,
2137 &softc->device_stats);
2139 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2140 cam_release_devq(ccb->ccb_h.path,
2144 /*getcount_only*/0);
2147 block_len = scsi_4btoul(rcap->length);
2148 maxsector = scsi_4btoul(rcap->addr);
2150 if (maxsector != 0xffffffff)
2155 rcaplong = (struct scsi_read_capacity_data_16 *)rcap;
2157 scsi_read_capacity_16(&ccb->csio,
2160 /*tag_action*/ MSG_SIMPLE_Q_TAG,
2165 /*sense_len*/ SSD_FULL_SIZE,
2167 ccb->ccb_h.ccb_bio = NULL;
2169 error = cam_periph_runccb(ccb, daerror,
2170 /*cam_flags*/CAM_RETRY_SELTO,
2171 /*sense_flags*/SF_RETRY_UA,
2172 &softc->device_stats);
2174 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2175 cam_release_devq(ccb->ccb_h.path,
2179 /*getcount_only*/0);
2182 block_len = scsi_4btoul(rcaplong->length);
2183 maxsector = scsi_8btou64(rcaplong->addr);
2189 dasetgeom(periph, block_len, maxsector);
2191 xpt_release_ccb(ccb);
2193 kfree(rcap, M_SCSIDA);
2199 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2201 struct ccb_calc_geometry ccg;
2202 struct da_softc *softc;
2203 struct disk_params *dp;
2205 softc = (struct da_softc *)periph->softc;
2207 dp = &softc->params;
2208 dp->secsize = block_len;
2209 dp->sectors = maxsector + 1;
2211 * Have the controller provide us with a geometry
2212 * for this disk. The only time the geometry
2213 * matters is when we boot and the controller
2214 * is the only one knowledgeable enough to come
2215 * up with something that will make this a bootable
2218 xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2219 ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2220 ccg.block_size = dp->secsize;
2221 ccg.volume_size = dp->sectors;
2223 ccg.secs_per_track = 0;
2225 xpt_action((union ccb*)&ccg);
2226 if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2228 * We don't know what went wrong here- but just pick
2229 * a geometry so we don't have nasty things like divide
2233 dp->secs_per_track = 255;
2234 dp->cylinders = dp->sectors / (255 * 255);
2235 if (dp->cylinders == 0) {
2239 dp->heads = ccg.heads;
2240 dp->secs_per_track = ccg.secs_per_track;
2241 dp->cylinders = ccg.cylinders;
2246 * Step through all DA peripheral drivers, and if the device is still open,
2247 * sync the disk cache to physical media.
2250 dashutdown(void * arg, int howto)
2252 struct cam_periph *periph;
2253 struct da_softc *softc;
2255 TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2258 cam_periph_lock(periph);
2259 softc = (struct da_softc *)periph->softc;
2262 * We only sync the cache if the drive is still open, and
2263 * if the drive is capable of it..
2265 if (((softc->flags & DA_FLAG_OPEN) == 0)
2266 || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2267 cam_periph_unlock(periph);
2271 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2273 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2274 scsi_synchronize_cache(&ccb.csio,
2278 /*begin_lba*/0, /* whole disk */
2283 xpt_polled_action(&ccb);
2285 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2286 if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2287 CAM_SCSI_STATUS_ERROR)
2288 && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2289 int error_code, sense_key, asc, ascq;
2291 scsi_extract_sense(&ccb.csio.sense_data,
2292 &error_code, &sense_key,
2295 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2296 scsi_sense_print(&ccb.csio);
2298 xpt_print(periph->path, "Synchronize "
2299 "cache failed, status == 0x%x, scsi status "
2300 "== 0x%x\n", ccb.ccb_h.status,
2301 ccb.csio.scsi_status);
2305 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2306 cam_release_devq(ccb.ccb_h.path,
2310 /*getcount_only*/0);
2312 cam_periph_unlock(periph);
2316 #else /* !_KERNEL */
2319 * XXX This is only left out of the kernel build to silence warnings. If,
2320 * for some reason this function is used in the kernel, the ifdefs should
2321 * be moved so it is included both in the kernel and userland.
2324 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2325 void (*cbfcnp)(struct cam_periph *, union ccb *),
2326 u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2327 u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2330 struct scsi_format_unit *scsi_cmd;
2332 scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2333 scsi_cmd->opcode = FORMAT_UNIT;
2334 scsi_cmd->byte2 = byte2;
2335 scsi_ulto2b(ileave, scsi_cmd->interleave);
2340 /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2349 #endif /* _KERNEL */