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freebsd-nq/sys/cam/scsi/scsi_da.c
John Polstra a7e69e8b7d Fix a bug that caused some /dev entries to continue to exist after 
the underlying drive had been hot-unplugged from the system.  Here
is a specific example.  Filesystem code had opened /dev/da1s1e.
Subsequently, the drive was hot-unplugged.  This (correctly) caused
all of the associated /dev/da1* entries to be deleted.  When the
filesystem later realized that the drive was gone it closed the
device, reducing the write-access counts to 0 on the geom providers
for da1s1e, da1s1, and da1.  This caused geom to re-taste the
providers, resulting in the devices being created again.  When the
drive was hot-plugged back in, it resulted in duplicate /dev entries
for da1s1e, da1s1, and da1.

This fix adds a new disk_gone() function which is called by CAM when a
drive goes away.  It orphans all of the providers associated with the
drive, setting an error condition of ENXIO in each one.  In addition,
we prevent a re-taste on last close for writing if an error condition
has been set in the provider.

Sponsored by:   Isilon Systems
Reviewed by:    phk
MFC after:      1 week
2005-11-18 02:43:49 +00:00

1909 lines
48 KiB
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/*-
* Implementation of SCSI Direct Access Peripheral driver for CAM.
*
* Copyright (c) 1997 Justin T. Gibbs.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#ifdef _KERNEL
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bio.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#endif /* _KERNEL */
#include <sys/devicestat.h>
#include <sys/conf.h>
#include <sys/eventhandler.h>
#include <sys/malloc.h>
#include <sys/cons.h>
#include <machine/md_var.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <geom/geom_disk.h>
#ifndef _KERNEL
#include <stdio.h>
#include <string.h>
#endif /* _KERNEL */
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_periph.h>
#include <cam/cam_xpt_periph.h>
#include <cam/scsi/scsi_message.h>
#ifndef _KERNEL
#include <cam/scsi/scsi_da.h>
#endif /* !_KERNEL */
#ifdef _KERNEL
typedef enum {
DA_STATE_PROBE,
DA_STATE_PROBE2,
DA_STATE_NORMAL
} da_state;
typedef enum {
DA_FLAG_PACK_INVALID = 0x001,
DA_FLAG_NEW_PACK = 0x002,
DA_FLAG_PACK_LOCKED = 0x004,
DA_FLAG_PACK_REMOVABLE = 0x008,
DA_FLAG_TAGGED_QUEUING = 0x010,
DA_FLAG_NEED_OTAG = 0x020,
DA_FLAG_WENT_IDLE = 0x040,
DA_FLAG_RETRY_UA = 0x080,
DA_FLAG_OPEN = 0x100,
DA_FLAG_SCTX_INIT = 0x200
} da_flags;
typedef enum {
DA_Q_NONE = 0x00,
DA_Q_NO_SYNC_CACHE = 0x01,
DA_Q_NO_6_BYTE = 0x02,
DA_Q_NO_PREVENT = 0x04
} da_quirks;
typedef enum {
DA_CCB_PROBE = 0x01,
DA_CCB_PROBE2 = 0x02,
DA_CCB_BUFFER_IO = 0x03,
DA_CCB_WAITING = 0x04,
DA_CCB_DUMP = 0x05,
DA_CCB_TYPE_MASK = 0x0F,
DA_CCB_RETRY_UA = 0x10
} da_ccb_state;
/* Offsets into our private area for storing information */
#define ccb_state ppriv_field0
#define ccb_bp ppriv_ptr1
struct disk_params {
u_int8_t heads;
u_int32_t cylinders;
u_int8_t secs_per_track;
u_int32_t secsize; /* Number of bytes/sector */
u_int64_t sectors; /* total number sectors */
};
struct da_softc {
struct bio_queue_head bio_queue;
SLIST_ENTRY(da_softc) links;
LIST_HEAD(, ccb_hdr) pending_ccbs;
da_state state;
da_flags flags;
da_quirks quirks;
int minimum_cmd_size;
int ordered_tag_count;
int outstanding_cmds;
struct disk_params params;
struct disk *disk;
union ccb saved_ccb;
struct task sysctl_task;
struct sysctl_ctx_list sysctl_ctx;
struct sysctl_oid *sysctl_tree;
};
struct da_quirk_entry {
struct scsi_inquiry_pattern inq_pat;
da_quirks quirks;
};
static const char quantum[] = "QUANTUM";
static const char microp[] = "MICROP";
static struct da_quirk_entry da_quirk_table[] =
{
/* SPI, FC devices */
{
/*
* Fujitsu M2513A MO drives.
* Tested devices: M2513A2 firmware versions 1200 & 1300.
* (dip switch selects whether T_DIRECT or T_OPTICAL device)
* Reported by: W.Scholten <whs@xs4all.nl>
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/* See above. */
{T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* This particular Fujitsu drive doesn't like the
* synchronize cache command.
* Reported by: Tom Jackson <toj@gorilla.net>
*/
{T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* This drive doesn't like the synchronize cache command
* either. Reported by: Matthew Jacob <mjacob@feral.com>
* in NetBSD PR kern/6027, August 24, 1998.
*/
{T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* This drive doesn't like the synchronize cache command
* either. Reported by: Hellmuth Michaelis (hm@kts.org)
* (PR 8882).
*/
{T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Doesn't like the synchronize cache command.
* Reported by: Blaz Zupan <blaz@gold.amis.net>
*/
{T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Doesn't like the synchronize cache command.
* Reported by: Blaz Zupan <blaz@gold.amis.net>
*/
{T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Doesn't like the synchronize cache command.
*/
{T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Doesn't like the synchronize cache command.
* Reported by: walter@pelissero.de
*/
{T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Doesn't work correctly with 6 byte reads/writes.
* Returns illegal request, and points to byte 9 of the
* 6-byte CDB.
* Reported by: Adam McDougall <bsdx@spawnet.com>
*/
{T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
/*quirks*/ DA_Q_NO_6_BYTE
},
{
/* See above. */
{T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
/*quirks*/ DA_Q_NO_6_BYTE
},
{
/*
* Doesn't like the synchronize cache command.
* Reported by: walter@pelissero.de
*/
{T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* The CISS RAID controllers do not support SYNC_CACHE
*/
{T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
/* USB mass storage devices supported by umass(4) */
{
/*
* EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
* PR: kern/51675
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Power Quotient Int. (PQI) USB flash key
* PR: kern/53067
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "USB Flash Disk*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Creative Nomad MUVO mp3 player (USB)
* PR: kern/53094
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
},
{
/*
* Jungsoft NEXDISK USB flash key
* PR: kern/54737
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* FreeDik USB Mini Data Drive
* PR: kern/54786
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "FreeDik*", "Mini Data Drive",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Sigmatel USB Flash MP3 Player
* PR: kern/57046
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
},
{
/*
* Neuros USB Digital Audio Computer
* PR: kern/63645
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "NEUROS", "dig. audio comp.",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* SEAGRAND NP-900 MP3 Player
* PR: kern/64563
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
},
{
/*
* iRiver iFP MP3 player (with UMS Firmware)
* PR: kern/54881, i386/63941, kern/66124
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
* PR: kern/70158
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "Nex*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* ZICPlay USB MP3 Player with FM
* PR: kern/75057
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "ACTIONS*" , "USB DISK*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* TEAC USB floppy mechanisms
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "TEAC" , "FD-05*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Kingston DataTraveler II+ USB Pen-Drive.
* Reported by: Pawel Jakub Dawidek <pjd@FreeBSD.org>
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston" , "DataTraveler II+", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
};
static disk_strategy_t dastrategy;
static dumper_t dadump;
static periph_init_t dainit;
static void daasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg);
static void dasysctlinit(void *context, int pending);
static int dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
static periph_ctor_t daregister;
static periph_dtor_t dacleanup;
static periph_start_t dastart;
static periph_oninv_t daoninvalidate;
static void dadone(struct cam_periph *periph,
union ccb *done_ccb);
static int daerror(union ccb *ccb, u_int32_t cam_flags,
u_int32_t sense_flags);
static void daprevent(struct cam_periph *periph, int action);
static int dagetcapacity(struct cam_periph *periph);
static void dasetgeom(struct cam_periph *periph, uint32_t block_len,
uint64_t maxsector);
static timeout_t dasendorderedtag;
static void dashutdown(void *arg, int howto);
#ifndef DA_DEFAULT_TIMEOUT
#define DA_DEFAULT_TIMEOUT 60 /* Timeout in seconds */
#endif
#ifndef DA_DEFAULT_RETRY
#define DA_DEFAULT_RETRY 4
#endif
static int da_retry_count = DA_DEFAULT_RETRY;
static int da_default_timeout = DA_DEFAULT_TIMEOUT;
SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
"CAM Direct Access Disk driver");
SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
&da_retry_count, 0, "Normal I/O retry count");
TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
&da_default_timeout, 0, "Normal I/O timeout (in seconds)");
TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
/*
* DA_ORDEREDTAG_INTERVAL determines how often, relative
* to the default timeout, we check to see whether an ordered
* tagged transaction is appropriate to prevent simple tag
* starvation. Since we'd like to ensure that there is at least
* 1/2 of the timeout length left for a starved transaction to
* complete after we've sent an ordered tag, we must poll at least
* four times in every timeout period. This takes care of the worst
* case where a starved transaction starts during an interval that
* meets the requirement "don't send an ordered tag" test so it takes
* us two intervals to determine that a tag must be sent.
*/
#ifndef DA_ORDEREDTAG_INTERVAL
#define DA_ORDEREDTAG_INTERVAL 4
#endif
static struct periph_driver dadriver =
{
dainit, "da",
TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
};
PERIPHDRIVER_DECLARE(da, dadriver);
static SLIST_HEAD(,da_softc) softc_list;
static int
daopen(struct disk *dp)
{
struct cam_periph *periph;
struct da_softc *softc;
int unit;
int error;
int s;
s = splsoftcam();
periph = (struct cam_periph *)dp->d_drv1;
if (periph == NULL) {
splx(s);
return (ENXIO);
}
unit = periph->unit_number;
softc = (struct da_softc *)periph->softc;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("daopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit,
unit));
if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0)
return (error); /* error code from tsleep */
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
return(ENXIO);
softc->flags |= DA_FLAG_OPEN;
if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
/* Invalidate our pack information. */
softc->flags &= ~DA_FLAG_PACK_INVALID;
}
splx(s);
error = dagetcapacity(periph);
if (error == 0) {
softc->disk->d_sectorsize = softc->params.secsize;
softc->disk->d_mediasize = softc->params.secsize * (off_t)softc->params.sectors;
/* XXX: these are not actually "firmware" values, so they may be wrong */
softc->disk->d_fwsectors = softc->params.secs_per_track;
softc->disk->d_fwheads = softc->params.heads;
softc->disk->d_devstat->block_size = softc->params.secsize;
softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
}
if (error == 0) {
if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
(softc->quirks & DA_Q_NO_PREVENT) == 0)
daprevent(periph, PR_PREVENT);
} else {
softc->flags &= ~DA_FLAG_OPEN;
cam_periph_release(periph);
}
cam_periph_unlock(periph);
return (error);
}
static int
daclose(struct disk *dp)
{
struct cam_periph *periph;
struct da_softc *softc;
int error;
periph = (struct cam_periph *)dp->d_drv1;
if (periph == NULL)
return (ENXIO);
softc = (struct da_softc *)periph->softc;
if ((error = cam_periph_lock(periph, PRIBIO)) != 0) {
return (error); /* error code from tsleep */
}
if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
union ccb *ccb;
ccb = cam_periph_getccb(periph, /*priority*/1);
scsi_synchronize_cache(&ccb->csio,
/*retries*/1,
/*cbfcnp*/dadone,
MSG_SIMPLE_Q_TAG,
/*begin_lba*/0,/* Cover the whole disk */
/*lb_count*/0,
SSD_FULL_SIZE,
5 * 60 * 1000);
cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
/*sense_flags*/SF_RETRY_UA,
softc->disk->d_devstat);
if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
CAM_SCSI_STATUS_ERROR) {
int asc, ascq;
int sense_key, error_code;
scsi_extract_sense(&ccb->csio.sense_data,
&error_code,
&sense_key,
&asc, &ascq);
if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
scsi_sense_print(&ccb->csio);
} else {
xpt_print_path(periph->path);
printf("Synchronize cache failed, status "
"== 0x%x, scsi status == 0x%x\n",
ccb->csio.ccb_h.status,
ccb->csio.scsi_status);
}
}
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
xpt_release_ccb(ccb);
}
if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
daprevent(periph, PR_ALLOW);
/*
* If we've got removeable media, mark the blocksize as
* unavailable, since it could change when new media is
* inserted.
*/
softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
}
softc->flags &= ~DA_FLAG_OPEN;
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
/*
* Actually translate the requested transfer into one the physical driver
* can understand. The transfer is described by a buf and will include
* only one physical transfer.
*/
static void
dastrategy(struct bio *bp)
{
struct cam_periph *periph;
struct da_softc *softc;
int s;
periph = (struct cam_periph *)bp->bio_disk->d_drv1;
if (periph == NULL) {
biofinish(bp, NULL, ENXIO);
return;
}
softc = (struct da_softc *)periph->softc;
#if 0
/*
* check it's not too big a transfer for our adapter
*/
scsi_minphys(bp,&sd_switch);
#endif
/*
* Mask interrupts so that the pack cannot be invalidated until
* after we are in the queue. Otherwise, we might not properly
* clean up one of the buffers.
*/
s = splbio();
/*
* If the device has been made invalid, error out
*/
if ((softc->flags & DA_FLAG_PACK_INVALID)) {
splx(s);
biofinish(bp, NULL, ENXIO);
return;
}
/*
* Place it in the queue of disk activities for this disk
*/
bioq_disksort(&softc->bio_queue, bp);
splx(s);
/*
* Schedule ourselves for performing the work.
*/
xpt_schedule(periph, /* XXX priority */1);
return;
}
static int
dadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
{
struct cam_periph *periph;
struct da_softc *softc;
u_int secsize;
struct ccb_scsiio csio;
struct disk *dp;
dp = arg;
periph = dp->d_drv1;
if (periph == NULL)
return (ENXIO);
softc = (struct da_softc *)periph->softc;
secsize = softc->params.secsize;
if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
return (ENXIO);
if (length > 0) {
xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
csio.ccb_h.ccb_state = DA_CCB_DUMP;
scsi_read_write(&csio,
/*retries*/1,
dadone,
MSG_ORDERED_Q_TAG,
/*read*/FALSE,
/*byte2*/0,
/*minimum_cmd_size*/ softc->minimum_cmd_size,
offset / secsize,
length / secsize,
/*data_ptr*/(u_int8_t *) virtual,
/*dxfer_len*/length,
/*sense_len*/SSD_FULL_SIZE,
DA_DEFAULT_TIMEOUT * 1000);
xpt_polled_action((union ccb *)&csio);
if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
printf("Aborting dump due to I/O error.\n");
if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
CAM_SCSI_STATUS_ERROR)
scsi_sense_print(&csio);
else
printf("status == 0x%x, scsi status == 0x%x\n",
csio.ccb_h.status, csio.scsi_status);
return(EIO);
}
return(0);
}
/*
* Sync the disk cache contents to the physical media.
*/
if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
csio.ccb_h.ccb_state = DA_CCB_DUMP;
scsi_synchronize_cache(&csio,
/*retries*/1,
/*cbfcnp*/dadone,
MSG_SIMPLE_Q_TAG,
/*begin_lba*/0,/* Cover the whole disk */
/*lb_count*/0,
SSD_FULL_SIZE,
5 * 60 * 1000);
xpt_polled_action((union ccb *)&csio);
if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
CAM_SCSI_STATUS_ERROR) {
int asc, ascq;
int sense_key, error_code;
scsi_extract_sense(&csio.sense_data,
&error_code,
&sense_key,
&asc, &ascq);
if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
scsi_sense_print(&csio);
} else {
xpt_print_path(periph->path);
printf("Synchronize cache failed, status "
"== 0x%x, scsi status == 0x%x\n",
csio.ccb_h.status, csio.scsi_status);
}
}
}
return (0);
}
static void
dainit(void)
{
cam_status status;
struct cam_path *path;
SLIST_INIT(&softc_list);
/*
* Install a global async callback. This callback will
* receive async callbacks like "new device found".
*/
status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
if (status == CAM_REQ_CMP) {
struct ccb_setasync csa;
xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_FOUND_DEVICE;
csa.callback = daasync;
csa.callback_arg = NULL;
xpt_action((union ccb *)&csa);
status = csa.ccb_h.status;
xpt_free_path(path);
}
if (status != CAM_REQ_CMP) {
printf("da: Failed to attach master async callback "
"due to status 0x%x!\n", status);
} else {
/*
* Schedule a periodic event to occasionally send an
* ordered tag to a device.
*/
timeout(dasendorderedtag, NULL,
(DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
/* Register our shutdown event handler */
if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
printf("dainit: shutdown event registration failed!\n");
}
}
static void
daoninvalidate(struct cam_periph *periph)
{
int s;
struct da_softc *softc;
struct ccb_setasync csa;
softc = (struct da_softc *)periph->softc;
/*
* De-register any async callbacks.
*/
xpt_setup_ccb(&csa.ccb_h, periph->path,
/* priority */ 5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = 0;
csa.callback = daasync;
csa.callback_arg = periph;
xpt_action((union ccb *)&csa);
softc->flags |= DA_FLAG_PACK_INVALID;
/*
* Although the oninvalidate() routines are always called at
* splsoftcam, we need to be at splbio() here to keep the buffer
* queue from being modified while we traverse it.
*/
s = splbio();
/*
* Return all queued I/O with ENXIO.
* XXX Handle any transactions queued to the card
* with XPT_ABORT_CCB.
*/
bioq_flush(&softc->bio_queue, NULL, ENXIO);
splx(s);
SLIST_REMOVE(&softc_list, softc, da_softc, links);
disk_gone(softc->disk);
xpt_print_path(periph->path);
printf("lost device\n");
}
static void
dacleanup(struct cam_periph *periph)
{
struct da_softc *softc;
softc = (struct da_softc *)periph->softc;
xpt_print_path(periph->path);
printf("removing device entry\n");
/*
* If we can't free the sysctl tree, oh well...
*/
if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
&& sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
xpt_print_path(periph->path);
printf("can't remove sysctl context\n");
}
disk_destroy(softc->disk);
free(softc, M_DEVBUF);
}
static void
daasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg)
{
struct cam_periph *periph;
periph = (struct cam_periph *)callback_arg;
switch (code) {
case AC_FOUND_DEVICE:
{
struct ccb_getdev *cgd;
cam_status status;
cgd = (struct ccb_getdev *)arg;
if (cgd == NULL)
break;
if (SID_TYPE(&cgd->inq_data) != T_DIRECT
&& SID_TYPE(&cgd->inq_data) != T_RBC
&& SID_TYPE(&cgd->inq_data) != T_OPTICAL)
break;
/*
* Allocate a peripheral instance for
* this device and start the probe
* process.
*/
status = cam_periph_alloc(daregister, daoninvalidate,
dacleanup, dastart,
"da", CAM_PERIPH_BIO,
cgd->ccb_h.path, daasync,
AC_FOUND_DEVICE, cgd);
if (status != CAM_REQ_CMP
&& status != CAM_REQ_INPROG)
printf("daasync: Unable to attach to new device "
"due to status 0x%x\n", status);
break;
}
case AC_SENT_BDR:
case AC_BUS_RESET:
{
struct da_softc *softc;
struct ccb_hdr *ccbh;
int s;
softc = (struct da_softc *)periph->softc;
s = splsoftcam();
/*
* Don't fail on the expected unit attention
* that will occur.
*/
softc->flags |= DA_FLAG_RETRY_UA;
LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
ccbh->ccb_state |= DA_CCB_RETRY_UA;
splx(s);
/* FALLTHROUGH*/
}
default:
cam_periph_async(periph, code, path, arg);
break;
}
}
static void
dasysctlinit(void *context, int pending)
{
struct cam_periph *periph;
struct da_softc *softc;
char tmpstr[80], tmpstr2[80];
periph = (struct cam_periph *)context;
softc = (struct da_softc *)periph->softc;
snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
mtx_lock(&Giant);
sysctl_ctx_init(&softc->sysctl_ctx);
softc->flags |= DA_FLAG_SCTX_INIT;
softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
CTLFLAG_RD, 0, tmpstr);
if (softc->sysctl_tree == NULL) {
printf("dasysctlinit: unable to allocate sysctl tree\n");
return;
}
/*
* Now register the sysctl handler, so the user can the value on
* the fly.
*/
SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
&softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
"Minimum CDB size");
mtx_unlock(&Giant);
}
static int
dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
{
int error, value;
value = *(int *)arg1;
error = sysctl_handle_int(oidp, &value, 0, req);
if ((error != 0)
|| (req->newptr == NULL))
return (error);
/*
* Acceptable values here are 6, 10, 12 or 16.
*/
if (value < 6)
value = 6;
else if ((value > 6)
&& (value <= 10))
value = 10;
else if ((value > 10)
&& (value <= 12))
value = 12;
else if (value > 12)
value = 16;
*(int *)arg1 = value;
return (0);
}
static cam_status
daregister(struct cam_periph *periph, void *arg)
{
int s;
struct da_softc *softc;
struct ccb_setasync csa;
struct ccb_pathinq cpi;
struct ccb_getdev *cgd;
char tmpstr[80];
caddr_t match;
cgd = (struct ccb_getdev *)arg;
if (periph == NULL) {
printf("daregister: periph was NULL!!\n");
return(CAM_REQ_CMP_ERR);
}
if (cgd == NULL) {
printf("daregister: no getdev CCB, can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = (struct da_softc *)malloc(sizeof(*softc), M_DEVBUF,
M_NOWAIT|M_ZERO);
if (softc == NULL) {
printf("daregister: Unable to probe new device. "
"Unable to allocate softc\n");
return(CAM_REQ_CMP_ERR);
}
LIST_INIT(&softc->pending_ccbs);
softc->state = DA_STATE_PROBE;
bioq_init(&softc->bio_queue);
if (SID_IS_REMOVABLE(&cgd->inq_data))
softc->flags |= DA_FLAG_PACK_REMOVABLE;
if ((cgd->inq_data.flags & SID_CmdQue) != 0)
softc->flags |= DA_FLAG_TAGGED_QUEUING;
periph->softc = softc;
/*
* See if this device has any quirks.
*/
match = cam_quirkmatch((caddr_t)&cgd->inq_data,
(caddr_t)da_quirk_table,
sizeof(da_quirk_table)/sizeof(*da_quirk_table),
sizeof(*da_quirk_table), scsi_inquiry_match);
if (match != NULL)
softc->quirks = ((struct da_quirk_entry *)match)->quirks;
else
softc->quirks = DA_Q_NONE;
/* Check if the SIM does not want 6 byte commands */
xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
softc->quirks |= DA_Q_NO_6_BYTE;
TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
/*
* RBC devices don't have to support READ(6), only READ(10).
*/
if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
softc->minimum_cmd_size = 10;
else
softc->minimum_cmd_size = 6;
/*
* Load the user's default, if any.
*/
snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
periph->unit_number);
TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
/*
* 6, 10, 12 and 16 are the currently permissible values.
*/
if (softc->minimum_cmd_size < 6)
softc->minimum_cmd_size = 6;
else if ((softc->minimum_cmd_size > 6)
&& (softc->minimum_cmd_size <= 10))
softc->minimum_cmd_size = 10;
else if ((softc->minimum_cmd_size > 10)
&& (softc->minimum_cmd_size <= 12))
softc->minimum_cmd_size = 12;
else if (softc->minimum_cmd_size > 12)
softc->minimum_cmd_size = 16;
/*
* Block our timeout handler while we
* add this softc to the dev list.
*/
s = splsoftclock();
SLIST_INSERT_HEAD(&softc_list, softc, links);
splx(s);
/*
* Register this media as a disk
*/
softc->disk = disk_alloc();
softc->disk->d_open = daopen;
softc->disk->d_close = daclose;
softc->disk->d_strategy = dastrategy;
softc->disk->d_dump = dadump;
softc->disk->d_name = "da";
softc->disk->d_drv1 = periph;
softc->disk->d_maxsize = DFLTPHYS; /* XXX: probably not arbitrary */
softc->disk->d_unit = periph->unit_number;
softc->disk->d_flags = DISKFLAG_NEEDSGIANT;
disk_create(softc->disk, DISK_VERSION);
/*
* Add async callbacks for bus reset and
* bus device reset calls. I don't bother
* checking if this fails as, in most cases,
* the system will function just fine without
* them and the only alternative would be to
* not attach the device on failure.
*/
xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
csa.ccb_h.func_code = XPT_SASYNC_CB;
csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
csa.callback = daasync;
csa.callback_arg = periph;
xpt_action((union ccb *)&csa);
/*
* Lock this peripheral until we are setup.
* This first call can't block
*/
(void)cam_periph_lock(periph, PRIBIO);
xpt_schedule(periph, /*priority*/5);
return(CAM_REQ_CMP);
}
static void
dastart(struct cam_periph *periph, union ccb *start_ccb)
{
struct da_softc *softc;
softc = (struct da_softc *)periph->softc;
switch (softc->state) {
case DA_STATE_NORMAL:
{
/* Pull a buffer from the queue and get going on it */
struct bio *bp;
int s;
/*
* See if there is a buf with work for us to do..
*/
s = splbio();
bp = bioq_first(&softc->bio_queue);
if (periph->immediate_priority <= periph->pinfo.priority) {
CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
("queuing for immediate ccb\n"));
start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
periph_links.sle);
periph->immediate_priority = CAM_PRIORITY_NONE;
splx(s);
wakeup(&periph->ccb_list);
} else if (bp == NULL) {
splx(s);
xpt_release_ccb(start_ccb);
} else {
int oldspl;
u_int8_t tag_code;
bioq_remove(&softc->bio_queue, bp);
if ((softc->flags & DA_FLAG_NEED_OTAG) != 0) {
softc->flags &= ~DA_FLAG_NEED_OTAG;
softc->ordered_tag_count++;
tag_code = MSG_ORDERED_Q_TAG;
} else {
tag_code = MSG_SIMPLE_Q_TAG;
}
scsi_read_write(&start_ccb->csio,
/*retries*/da_retry_count,
/*cbfcnp*/dadone,
/*tag_action*/tag_code,
/*read_op*/bp->bio_cmd == BIO_READ,
/*byte2*/0,
softc->minimum_cmd_size,
/*lba*/bp->bio_pblkno,
/*block_count*/bp->bio_bcount /
softc->params.secsize,
/*data_ptr*/ bp->bio_data,
/*dxfer_len*/ bp->bio_bcount,
/*sense_len*/SSD_FULL_SIZE,
/*timeout*/da_default_timeout*1000);
start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
/*
* Block out any asyncronous callbacks
* while we touch the pending ccb list.
*/
oldspl = splcam();
LIST_INSERT_HEAD(&softc->pending_ccbs,
&start_ccb->ccb_h, periph_links.le);
softc->outstanding_cmds++;
splx(oldspl);
/* We expect a unit attention from this device */
if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
softc->flags &= ~DA_FLAG_RETRY_UA;
}
start_ccb->ccb_h.ccb_bp = bp;
bp = bioq_first(&softc->bio_queue);
splx(s);
xpt_action(start_ccb);
}
if (bp != NULL) {
/* Have more work to do, so ensure we stay scheduled */
xpt_schedule(periph, /* XXX priority */1);
}
break;
}
case DA_STATE_PROBE:
{
struct ccb_scsiio *csio;
struct scsi_read_capacity_data *rcap;
rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
M_TEMP,
M_NOWAIT);
if (rcap == NULL) {
printf("dastart: Couldn't malloc read_capacity data\n");
/* da_free_periph??? */
break;
}
csio = &start_ccb->csio;
scsi_read_capacity(csio,
/*retries*/4,
dadone,
MSG_SIMPLE_Q_TAG,
rcap,
SSD_FULL_SIZE,
/*timeout*/5000);
start_ccb->ccb_h.ccb_bp = NULL;
start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
xpt_action(start_ccb);
break;
}
case DA_STATE_PROBE2:
{
struct ccb_scsiio *csio;
struct scsi_read_capacity_data_long *rcaplong;
rcaplong = (struct scsi_read_capacity_data_long *)
malloc(sizeof(*rcaplong), M_TEMP, M_NOWAIT);
if (rcaplong == NULL) {
printf("dastart: Couldn't malloc read_capacity data\n");
/* da_free_periph??? */
break;
}
csio = &start_ccb->csio;
scsi_read_capacity_16(csio,
/*retries*/ 4,
/*cbfcnp*/ dadone,
/*tag_action*/ MSG_SIMPLE_Q_TAG,
/*lba*/ 0,
/*reladr*/ 0,
/*pmi*/ 0,
rcaplong,
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ 60000);
start_ccb->ccb_h.ccb_bp = NULL;
start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
xpt_action(start_ccb);
break;
}
}
}
static int
cmd6workaround(union ccb *ccb)
{
struct scsi_rw_6 cmd6;
struct scsi_rw_10 *cmd10;
struct da_softc *softc;
u_int8_t *cdb;
int frozen;
cdb = ccb->csio.cdb_io.cdb_bytes;
/* Translation only possible if CDB is an array and cmd is R/W6 */
if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
(*cdb != READ_6 && *cdb != WRITE_6))
return 0;
xpt_print_path(ccb->ccb_h.path);
printf("READ(6)/WRITE(6) not supported, "
"increasing minimum_cmd_size to 10.\n");
softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
softc->minimum_cmd_size = 10;
bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
cmd10 = (struct scsi_rw_10 *)cdb;
cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
cmd10->byte2 = 0;
scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
cmd10->reserved = 0;
scsi_ulto2b(cmd6.length, cmd10->length);
cmd10->control = cmd6.control;
ccb->csio.cdb_len = sizeof(*cmd10);
/* Requeue request, unfreezing queue if necessary */
frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
ccb->ccb_h.status = CAM_REQUEUE_REQ;
xpt_action(ccb);
if (frozen) {
cam_release_devq(ccb->ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
}
return (ERESTART);
}
static void
dadone(struct cam_periph *periph, union ccb *done_ccb)
{
struct da_softc *softc;
struct ccb_scsiio *csio;
softc = (struct da_softc *)periph->softc;
csio = &done_ccb->csio;
switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
case DA_CCB_BUFFER_IO:
{
struct bio *bp;
int oldspl;
bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
int error;
int s;
int sf;
if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
sf = SF_RETRY_UA;
else
sf = 0;
error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
if (error == ERESTART) {
/*
* A retry was scheuled, so
* just return.
*/
return;
}
if (error != 0) {
s = splbio();
if (error == ENXIO) {
/*
* Catastrophic error. Mark our pack as
* invalid.
*/
/* XXX See if this is really a media
* change first.
*/
xpt_print_path(periph->path);
printf("Invalidating pack\n");
softc->flags |= DA_FLAG_PACK_INVALID;
}
/*
* return all queued I/O with EIO, so that
* the client can retry these I/Os in the
* proper order should it attempt to recover.
*/
bioq_flush(&softc->bio_queue, NULL, EIO);
splx(s);
bp->bio_error = error;
bp->bio_resid = bp->bio_bcount;
bp->bio_flags |= BIO_ERROR;
} else {
bp->bio_resid = csio->resid;
bp->bio_error = 0;
if (bp->bio_resid != 0)
bp->bio_flags |= BIO_ERROR;
}
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(done_ccb->ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
} else {
if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
panic("REQ_CMP with QFRZN");
bp->bio_resid = csio->resid;
if (csio->resid > 0)
bp->bio_flags |= BIO_ERROR;
}
/*
* Block out any asyncronous callbacks
* while we touch the pending ccb list.
*/
oldspl = splcam();
LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
softc->outstanding_cmds--;
if (softc->outstanding_cmds == 0)
softc->flags |= DA_FLAG_WENT_IDLE;
splx(oldspl);
biodone(bp);
break;
}
case DA_CCB_PROBE:
case DA_CCB_PROBE2:
{
struct scsi_read_capacity_data *rdcap;
struct scsi_read_capacity_data_long *rcaplong;
char announce_buf[80];
rdcap = NULL;
rcaplong = NULL;
if (softc->state == DA_STATE_PROBE)
rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
else
rcaplong = (struct scsi_read_capacity_data_long *)
csio->data_ptr;
if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
struct disk_params *dp;
uint32_t block_size;
uint64_t maxsector;
if (softc->state == DA_STATE_PROBE) {
block_size = scsi_4btoul(rdcap->length);
maxsector = scsi_4btoul(rdcap->addr);
/*
* According to SBC-2, if the standard 10
* byte READ CAPACITY command returns 2^32,
* we should issue the 16 byte version of
* the command, since the device in question
* has more sectors than can be represented
* with the short version of the command.
*/
if (maxsector == 0xffffffff) {
softc->state = DA_STATE_PROBE2;
free(rdcap, M_TEMP);
xpt_release_ccb(done_ccb);
xpt_schedule(periph, /*priority*/5);
return;
}
} else {
block_size = scsi_4btoul(rcaplong->length);
maxsector = scsi_8btou64(rcaplong->addr);
}
dasetgeom(periph, block_size, maxsector);
dp = &softc->params;
snprintf(announce_buf, sizeof(announce_buf),
"%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
(uintmax_t) (((uintmax_t)dp->secsize *
dp->sectors) / (1024*1024)),
(uintmax_t)dp->sectors,
dp->secsize, dp->heads, dp->secs_per_track,
dp->cylinders);
} else {
int error;
announce_buf[0] = '\0';
/*
* Retry any UNIT ATTENTION type errors. They
* are expected at boot.
*/
error = daerror(done_ccb, CAM_RETRY_SELTO,
SF_RETRY_UA|SF_NO_PRINT);
if (error == ERESTART) {
/*
* A retry was scheuled, so
* just return.
*/
return;
} else if (error != 0) {
struct scsi_sense_data *sense;
int asc, ascq;
int sense_key, error_code;
int have_sense;
cam_status status;
struct ccb_getdev cgd;
/* Don't wedge this device's queue */
status = done_ccb->ccb_h.status;
if ((status & CAM_DEV_QFRZN) != 0)
cam_release_devq(done_ccb->ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
xpt_setup_ccb(&cgd.ccb_h,
done_ccb->ccb_h.path,
/* priority */ 1);
cgd.ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)&cgd);
if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
|| ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
|| ((status & CAM_AUTOSNS_VALID) == 0))
have_sense = FALSE;
else
have_sense = TRUE;
if (have_sense) {
sense = &csio->sense_data;
scsi_extract_sense(sense, &error_code,
&sense_key,
&asc, &ascq);
}
/*
* Attach to anything that claims to be a
* direct access or optical disk device,
* as long as it doesn't return a "Logical
* unit not supported" (0x25) error.
*/
if ((have_sense) && (asc != 0x25)
&& (error_code == SSD_CURRENT_ERROR)) {
const char *sense_key_desc;
const char *asc_desc;
scsi_sense_desc(sense_key, asc, ascq,
&cgd.inq_data,
&sense_key_desc,
&asc_desc);
snprintf(announce_buf,
sizeof(announce_buf),
"Attempt to query device "
"size failed: %s, %s",
sense_key_desc,
asc_desc);
} else {
if (have_sense)
scsi_sense_print(
&done_ccb->csio);
else {
xpt_print_path(periph->path);
printf("got CAM status %#x\n",
done_ccb->ccb_h.status);
}
xpt_print_path(periph->path);
printf("fatal error, failed"
" to attach to device\n");
/*
* Free up resources.
*/
cam_periph_invalidate(periph);
}
}
}
free(csio->data_ptr, M_TEMP);
if (announce_buf[0] != '\0') {
xpt_announce_periph(periph, announce_buf);
/*
* Create our sysctl variables, now that we know
* we have successfully attached.
*/
taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
}
softc->state = DA_STATE_NORMAL;
/*
* Since our peripheral may be invalidated by an error
* above or an external event, we must release our CCB
* before releasing the probe lock on the peripheral.
* The peripheral will only go away once the last lock
* is removed, and we need it around for the CCB release
* operation.
*/
xpt_release_ccb(done_ccb);
cam_periph_unlock(periph);
return;
}
case DA_CCB_WAITING:
{
/* Caller will release the CCB */
wakeup(&done_ccb->ccb_h.cbfcnp);
return;
}
case DA_CCB_DUMP:
/* No-op. We're polling */
return;
default:
break;
}
xpt_release_ccb(done_ccb);
}
static int
daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
{
struct da_softc *softc;
struct cam_periph *periph;
int error;
periph = xpt_path_periph(ccb->ccb_h.path);
softc = (struct da_softc *)periph->softc;
/*
* Automatically detect devices that do not support
* READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
*/
error = 0;
if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
error = cmd6workaround(ccb);
} else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
CAM_SCSI_STATUS_ERROR)
&& (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
&& (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
&& ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
&& ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
int sense_key, error_code, asc, ascq;
scsi_extract_sense(&ccb->csio.sense_data,
&error_code, &sense_key, &asc, &ascq);
if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
error = cmd6workaround(ccb);
}
if (error == ERESTART)
return (ERESTART);
/*
* XXX
* Until we have a better way of doing pack validation,
* don't treat UAs as errors.
*/
sense_flags |= SF_RETRY_UA;
return(cam_periph_error(ccb, cam_flags, sense_flags,
&softc->saved_ccb));
}
static void
daprevent(struct cam_periph *periph, int action)
{
struct da_softc *softc;
union ccb *ccb;
int error;
softc = (struct da_softc *)periph->softc;
if (((action == PR_ALLOW)
&& (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
|| ((action == PR_PREVENT)
&& (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
return;
}
ccb = cam_periph_getccb(periph, /*priority*/1);
scsi_prevent(&ccb->csio,
/*retries*/1,
/*cbcfp*/dadone,
MSG_SIMPLE_Q_TAG,
action,
SSD_FULL_SIZE,
5000);
error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
SF_RETRY_UA, softc->disk->d_devstat);
if (error == 0) {
if (action == PR_ALLOW)
softc->flags &= ~DA_FLAG_PACK_LOCKED;
else
softc->flags |= DA_FLAG_PACK_LOCKED;
}
xpt_release_ccb(ccb);
}
static int
dagetcapacity(struct cam_periph *periph)
{
struct da_softc *softc;
union ccb *ccb;
struct scsi_read_capacity_data *rcap;
struct scsi_read_capacity_data_long *rcaplong;
uint32_t block_len;
uint64_t maxsector;
int error;
softc = (struct da_softc *)periph->softc;
block_len = 0;
maxsector = 0;
error = 0;
/* Do a read capacity */
rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcaplong),
M_TEMP,
M_WAITOK);
ccb = cam_periph_getccb(periph, /*priority*/1);
scsi_read_capacity(&ccb->csio,
/*retries*/4,
/*cbfncp*/dadone,
MSG_SIMPLE_Q_TAG,
rcap,
SSD_FULL_SIZE,
/*timeout*/60000);
ccb->ccb_h.ccb_bp = NULL;
error = cam_periph_runccb(ccb, daerror,
/*cam_flags*/CAM_RETRY_SELTO,
/*sense_flags*/SF_RETRY_UA,
softc->disk->d_devstat);
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
if (error == 0) {
block_len = scsi_4btoul(rcap->length);
maxsector = scsi_4btoul(rcap->addr);
if (maxsector != 0xffffffff)
goto done;
} else
goto done;
rcaplong = (struct scsi_read_capacity_data_long *)rcap;
scsi_read_capacity_16(&ccb->csio,
/*retries*/ 4,
/*cbfcnp*/ dadone,
/*tag_action*/ MSG_SIMPLE_Q_TAG,
/*lba*/ 0,
/*reladr*/ 0,
/*pmi*/ 0,
rcaplong,
/*sense_len*/ SSD_FULL_SIZE,
/*timeout*/ 60000);
ccb->ccb_h.ccb_bp = NULL;
error = cam_periph_runccb(ccb, daerror,
/*cam_flags*/CAM_RETRY_SELTO,
/*sense_flags*/SF_RETRY_UA,
softc->disk->d_devstat);
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb->ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
if (error == 0) {
block_len = scsi_4btoul(rcaplong->length);
maxsector = scsi_8btou64(rcaplong->addr);
}
done:
if (error == 0)
dasetgeom(periph, block_len, maxsector);
xpt_release_ccb(ccb);
free(rcap, M_TEMP);
return (error);
}
static void
dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
{
struct ccb_calc_geometry ccg;
struct da_softc *softc;
struct disk_params *dp;
softc = (struct da_softc *)periph->softc;
dp = &softc->params;
dp->secsize = block_len;
dp->sectors = maxsector + 1;
/*
* Have the controller provide us with a geometry
* for this disk. The only time the geometry
* matters is when we boot and the controller
* is the only one knowledgeable enough to come
* up with something that will make this a bootable
* device.
*/
xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
ccg.block_size = dp->secsize;
ccg.volume_size = dp->sectors;
ccg.heads = 0;
ccg.secs_per_track = 0;
ccg.cylinders = 0;
xpt_action((union ccb*)&ccg);
dp->heads = ccg.heads;
dp->secs_per_track = ccg.secs_per_track;
dp->cylinders = ccg.cylinders;
}
static void
dasendorderedtag(void *arg)
{
struct da_softc *softc;
int s;
for (softc = SLIST_FIRST(&softc_list);
softc != NULL;
softc = SLIST_NEXT(softc, links)) {
s = splsoftcam();
if ((softc->ordered_tag_count == 0)
&& ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
softc->flags |= DA_FLAG_NEED_OTAG;
}
if (softc->outstanding_cmds > 0)
softc->flags &= ~DA_FLAG_WENT_IDLE;
softc->ordered_tag_count = 0;
splx(s);
}
/* Queue us up again */
timeout(dasendorderedtag, NULL,
(da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL);
}
/*
* Step through all DA peripheral drivers, and if the device is still open,
* sync the disk cache to physical media.
*/
static void
dashutdown(void * arg, int howto)
{
struct cam_periph *periph;
struct da_softc *softc;
TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
union ccb ccb;
softc = (struct da_softc *)periph->softc;
/*
* We only sync the cache if the drive is still open, and
* if the drive is capable of it..
*/
if (((softc->flags & DA_FLAG_OPEN) == 0)
|| (softc->quirks & DA_Q_NO_SYNC_CACHE))
continue;
xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
ccb.ccb_h.ccb_state = DA_CCB_DUMP;
scsi_synchronize_cache(&ccb.csio,
/*retries*/1,
/*cbfcnp*/dadone,
MSG_SIMPLE_Q_TAG,
/*begin_lba*/0, /* whole disk */
/*lb_count*/0,
SSD_FULL_SIZE,
60 * 60 * 1000);
xpt_polled_action(&ccb);
if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
CAM_SCSI_STATUS_ERROR)
&& (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
int error_code, sense_key, asc, ascq;
scsi_extract_sense(&ccb.csio.sense_data,
&error_code, &sense_key,
&asc, &ascq);
if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
scsi_sense_print(&ccb.csio);
} else {
xpt_print_path(periph->path);
printf("Synchronize cache failed, status "
"== 0x%x, scsi status == 0x%x\n",
ccb.ccb_h.status, ccb.csio.scsi_status);
}
}
if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
cam_release_devq(ccb.ccb_h.path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
}
}
#else /* !_KERNEL */
/*
* XXX This is only left out of the kernel build to silence warnings. If,
* for some reason this function is used in the kernel, the ifdefs should
* be moved so it is included both in the kernel and userland.
*/
void
scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
void (*cbfcnp)(struct cam_periph *, union ccb *),
u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
u_int32_t timeout)
{
struct scsi_format_unit *scsi_cmd;
scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
scsi_cmd->opcode = FORMAT_UNIT;
scsi_cmd->byte2 = byte2;
scsi_ulto2b(ileave, scsi_cmd->interleave);
cam_fill_csio(csio,
retries,
cbfcnp,
/*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
tag_action,
data_ptr,
dxfer_len,
sense_len,
sizeof(*scsi_cmd),
timeout);
}
#endif /* _KERNEL */
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