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7912f917ca
freebsd-nq/sys/cam/ata/ata_da.c
Alexander Motin 7912f917ca Acquire periph reference when handling d_getattr() method call. 
While GEOM in general has provider opened while sending BIO_GETATTR,
GEOM DISK does not really need to open disk to read medium-unrelated
attributes for own use.

Proposed by:	ken
2013-06-12 09:07:15 +00:00

2055 lines
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/*-
* Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
* 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "opt_ada.h"
#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>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/conf.h>
#include <sys/devicestat.h>
#include <sys/eventhandler.h>
#include <sys/malloc.h>
#include <sys/cons.h>
#include <sys/reboot.h>
#include <geom/geom_disk.h>
#endif /* _KERNEL */
#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/cam_sim.h>
#include <cam/ata/ata_all.h>
#include <machine/md_var.h> /* geometry translation */
#ifdef _KERNEL
#define ATA_MAX_28BIT_LBA 268435455UL
typedef enum {
ADA_STATE_RAHEAD,
ADA_STATE_WCACHE,
ADA_STATE_NORMAL
} ada_state;
typedef enum {
ADA_FLAG_CAN_48BIT = 0x0002,
ADA_FLAG_CAN_FLUSHCACHE = 0x0004,
ADA_FLAG_CAN_NCQ = 0x0008,
ADA_FLAG_CAN_DMA = 0x0010,
ADA_FLAG_NEED_OTAG = 0x0020,
ADA_FLAG_WENT_IDLE = 0x0040,
ADA_FLAG_CAN_TRIM = 0x0080,
ADA_FLAG_OPEN = 0x0100,
ADA_FLAG_SCTX_INIT = 0x0200,
ADA_FLAG_CAN_CFA = 0x0400,
ADA_FLAG_CAN_POWERMGT = 0x0800,
ADA_FLAG_CAN_DMA48 = 0x1000
} ada_flags;
typedef enum {
ADA_Q_NONE = 0x00,
ADA_Q_4K = 0x01,
} ada_quirks;
#define ADA_Q_BIT_STRING \
"\020" \
"\0014K"
typedef enum {
ADA_CCB_RAHEAD = 0x01,
ADA_CCB_WCACHE = 0x02,
ADA_CCB_BUFFER_IO = 0x03,
ADA_CCB_WAITING = 0x04,
ADA_CCB_DUMP = 0x05,
ADA_CCB_TRIM = 0x06,
ADA_CCB_TYPE_MASK = 0x0F,
} ada_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_int8_t secs_per_track;
u_int32_t cylinders;
u_int32_t secsize; /* Number of bytes/logical sector */
u_int64_t sectors; /* Total number sectors */
};
#define TRIM_MAX_BLOCKS 8
#define TRIM_MAX_RANGES (TRIM_MAX_BLOCKS * ATA_DSM_BLK_RANGES)
#define TRIM_MAX_BIOS (TRIM_MAX_RANGES * 4)
struct trim_request {
uint8_t data[TRIM_MAX_RANGES * ATA_DSM_RANGE_SIZE];
struct bio *bps[TRIM_MAX_BIOS];
};
struct ada_softc {
struct bio_queue_head bio_queue;
struct bio_queue_head trim_queue;
ada_state state;
ada_flags flags;
ada_quirks quirks;
int sort_io_queue;
int ordered_tag_count;
int outstanding_cmds;
int trim_max_ranges;
int trim_running;
int read_ahead;
int write_cache;
#ifdef ADA_TEST_FAILURE
int force_read_error;
int force_write_error;
int periodic_read_error;
int periodic_read_count;
#endif
struct disk_params params;
struct disk *disk;
struct task sysctl_task;
struct sysctl_ctx_list sysctl_ctx;
struct sysctl_oid *sysctl_tree;
struct callout sendordered_c;
struct trim_request trim_req;
};
struct ada_quirk_entry {
struct scsi_inquiry_pattern inq_pat;
ada_quirks quirks;
};
static struct ada_quirk_entry ada_quirk_table[] =
{
{
/* Hitachi Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Hitachi H??????????E3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Samsung Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD155UI*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Samsung Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD204UI*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Barracuda Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DL*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Barracuda Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???DM*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Barracuda Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DM*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500423AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500424AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640423AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640424AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750420AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750422AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750423AS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Seagate Momentus Thin Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???LT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RX*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RS*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RX*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Scorpio Black Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PKT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Scorpio Black Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PKT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Scorpio Blue Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PVT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* WDC Scorpio Blue Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PVT*", "*" },
/*quirks*/ADA_Q_4K
},
/* SSDs */
{
/*
* Corsair Force 2 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair CSSD-F*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Corsair Force 3 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Force 3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Corsair Force GT SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Force GT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Crucial M4 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "M4-CT???M4SSD2*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Crucial RealSSD C300 SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "C300-CTFDDAC???MAG*",
"*" }, /*quirks*/ADA_Q_4K
},
{
/*
* Intel 320 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSA2CW*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Intel 330 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2CT*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Intel 510 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2MH*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Intel 520 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2BW*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Kingston E100 Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "KINGSTON SE100S3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Kingston HyperX 3k SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "KINGSTON SH103S3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Agility 3 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-AGILITY3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Deneva R Series SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "DENRSTE251M45*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Vertex 2 SSDs (inc pro series)
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ?VERTEX2*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* OCZ Vertex 3 SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-VERTEX3*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* Samsung 830 Series SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG SSD 830 Series*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* SuperTalent TeraDrive CT SSDs
* 4k optimised & trim only works in 4k requests + 4k aligned
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "FTM??CT25H*", "*" },
/*quirks*/ADA_Q_4K
},
{
/*
* XceedIOPS SATA SSDs
* 4k optimised
*/
{ T_DIRECT, SIP_MEDIA_FIXED, "*", "SG9XCS2D*", "*" },
/*quirks*/ADA_Q_4K
},
{
/* Default */
{
T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
/*vendor*/"*", /*product*/"*", /*revision*/"*"
},
/*quirks*/0
},
};
static disk_strategy_t adastrategy;
static dumper_t adadump;
static periph_init_t adainit;
static void adaasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg);
static void adasysctlinit(void *context, int pending);
static periph_ctor_t adaregister;
static periph_dtor_t adacleanup;
static periph_start_t adastart;
static periph_oninv_t adaoninvalidate;
static void adadone(struct cam_periph *periph,
union ccb *done_ccb);
static int adaerror(union ccb *ccb, u_int32_t cam_flags,
u_int32_t sense_flags);
static void adagetparams(struct cam_periph *periph,
struct ccb_getdev *cgd);
static timeout_t adasendorderedtag;
static void adashutdown(void *arg, int howto);
static void adasuspend(void *arg);
static void adaresume(void *arg);
#ifndef ADA_DEFAULT_LEGACY_ALIASES
#define ADA_DEFAULT_LEGACY_ALIASES 1
#endif
#ifndef ADA_DEFAULT_TIMEOUT
#define ADA_DEFAULT_TIMEOUT 30 /* Timeout in seconds */
#endif
#ifndef ADA_DEFAULT_RETRY
#define ADA_DEFAULT_RETRY 4
#endif
#ifndef ADA_DEFAULT_SEND_ORDERED
#define ADA_DEFAULT_SEND_ORDERED 1
#endif
#ifndef ADA_DEFAULT_SPINDOWN_SHUTDOWN
#define ADA_DEFAULT_SPINDOWN_SHUTDOWN 1
#endif
#ifndef ADA_DEFAULT_SPINDOWN_SUSPEND
#define ADA_DEFAULT_SPINDOWN_SUSPEND 1
#endif
#ifndef ADA_DEFAULT_READ_AHEAD
#define ADA_DEFAULT_READ_AHEAD 1
#endif
#ifndef ADA_DEFAULT_WRITE_CACHE
#define ADA_DEFAULT_WRITE_CACHE 1
#endif
#define ADA_RA (softc->read_ahead >= 0 ? \
softc->read_ahead : ada_read_ahead)
#define ADA_WC (softc->write_cache >= 0 ? \
softc->write_cache : ada_write_cache)
#define ADA_SIO (softc->sort_io_queue >= 0 ? \
softc->sort_io_queue : cam_sort_io_queues)
/*
* Most platforms map firmware geometry to actual, but some don't. If
* not overridden, default to nothing.
*/
#ifndef ata_disk_firmware_geom_adjust
#define ata_disk_firmware_geom_adjust(disk)
#endif
static int ada_legacy_aliases = ADA_DEFAULT_LEGACY_ALIASES;
static int ada_retry_count = ADA_DEFAULT_RETRY;
static int ada_default_timeout = ADA_DEFAULT_TIMEOUT;
static int ada_send_ordered = ADA_DEFAULT_SEND_ORDERED;
static int ada_spindown_shutdown = ADA_DEFAULT_SPINDOWN_SHUTDOWN;
static int ada_spindown_suspend = ADA_DEFAULT_SPINDOWN_SUSPEND;
static int ada_read_ahead = ADA_DEFAULT_READ_AHEAD;
static int ada_write_cache = ADA_DEFAULT_WRITE_CACHE;
static SYSCTL_NODE(_kern_cam, OID_AUTO, ada, CTLFLAG_RD, 0,
"CAM Direct Access Disk driver");
SYSCTL_INT(_kern_cam_ada, OID_AUTO, legacy_aliases, CTLFLAG_RW,
&ada_legacy_aliases, 0, "Create legacy-like device aliases");
TUNABLE_INT("kern.cam.ada.legacy_aliases", &ada_legacy_aliases);
SYSCTL_INT(_kern_cam_ada, OID_AUTO, retry_count, CTLFLAG_RW,
&ada_retry_count, 0, "Normal I/O retry count");
TUNABLE_INT("kern.cam.ada.retry_count", &ada_retry_count);
SYSCTL_INT(_kern_cam_ada, OID_AUTO, default_timeout, CTLFLAG_RW,
&ada_default_timeout, 0, "Normal I/O timeout (in seconds)");
TUNABLE_INT("kern.cam.ada.default_timeout", &ada_default_timeout);
SYSCTL_INT(_kern_cam_ada, OID_AUTO, send_ordered, CTLFLAG_RW,
&ada_send_ordered, 0, "Send Ordered Tags");
TUNABLE_INT("kern.cam.ada.send_ordered", &ada_send_ordered);
SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_shutdown, CTLFLAG_RW,
&ada_spindown_shutdown, 0, "Spin down upon shutdown");
TUNABLE_INT("kern.cam.ada.spindown_shutdown", &ada_spindown_shutdown);
SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_suspend, CTLFLAG_RW,
&ada_spindown_suspend, 0, "Spin down upon suspend");
TUNABLE_INT("kern.cam.ada.spindown_suspend", &ada_spindown_suspend);
SYSCTL_INT(_kern_cam_ada, OID_AUTO, read_ahead, CTLFLAG_RW,
&ada_read_ahead, 0, "Enable disk read-ahead");
TUNABLE_INT("kern.cam.ada.read_ahead", &ada_read_ahead);
SYSCTL_INT(_kern_cam_ada, OID_AUTO, write_cache, CTLFLAG_RW,
&ada_write_cache, 0, "Enable disk write cache");
TUNABLE_INT("kern.cam.ada.write_cache", &ada_write_cache);
/*
* ADA_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 ADA_ORDEREDTAG_INTERVAL
#define ADA_ORDEREDTAG_INTERVAL 4
#endif
static struct periph_driver adadriver =
{
adainit, "ada",
TAILQ_HEAD_INITIALIZER(adadriver.units), /* generation */ 0
};
PERIPHDRIVER_DECLARE(ada, adadriver);
static MALLOC_DEFINE(M_ATADA, "ata_da", "ata_da buffers");
static int
adaopen(struct disk *dp)
{
struct cam_periph *periph;
struct ada_softc *softc;
int error;
periph = (struct cam_periph *)dp->d_drv1;
if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
return(ENXIO);
}
cam_periph_lock(periph);
if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
cam_periph_unlock(periph);
cam_periph_release(periph);
return (error);
}
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
("adaopen\n"));
softc = (struct ada_softc *)periph->softc;
softc->flags |= ADA_FLAG_OPEN;
cam_periph_unhold(periph);
cam_periph_unlock(periph);
return (0);
}
static int
adaclose(struct disk *dp)
{
struct cam_periph *periph;
struct ada_softc *softc;
union ccb *ccb;
periph = (struct cam_periph *)dp->d_drv1;
cam_periph_lock(periph);
if (cam_periph_hold(periph, PRIBIO) != 0) {
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
softc = (struct ada_softc *)periph->softc;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
("adaclose\n"));
/* We only sync the cache if the drive is capable of it. */
if ((softc->flags & ADA_FLAG_CAN_FLUSHCACHE) != 0 &&
(periph->flags & CAM_PERIPH_INVALID) == 0) {
ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
cam_fill_ataio(&ccb->ataio,
1,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->flags & ADA_FLAG_CAN_48BIT)
ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
else
ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
/*sense_flags*/0, softc->disk->d_devstat);
if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
xpt_print(periph->path, "Synchronize cache failed\n");
xpt_release_ccb(ccb);
}
softc->flags &= ~ADA_FLAG_OPEN;
cam_periph_unhold(periph);
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
static void
adaschedule(struct cam_periph *periph)
{
struct ada_softc *softc = (struct ada_softc *)periph->softc;
uint32_t prio;
if (softc->state != ADA_STATE_NORMAL)
return;
/* Check if cam_periph_getccb() was called. */
prio = periph->immediate_priority;
/* Check if we have more work to do. */
if (bioq_first(&softc->bio_queue) ||
(!softc->trim_running && bioq_first(&softc->trim_queue))) {
prio = CAM_PRIORITY_NORMAL;
}
/* Schedule CCB if any of above is true. */
if (prio != CAM_PRIORITY_NONE)
xpt_schedule(periph, prio);
}
/*
* 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
adastrategy(struct bio *bp)
{
struct cam_periph *periph;
struct ada_softc *softc;
periph = (struct cam_periph *)bp->bio_disk->d_drv1;
softc = (struct ada_softc *)periph->softc;
cam_periph_lock(periph);
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("adastrategy(%p)\n", bp));
/*
* If the device has been made invalid, error out
*/
if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
cam_periph_unlock(periph);
biofinish(bp, NULL, ENXIO);
return;
}
/*
* Place it in the queue of disk activities for this disk
*/
if (bp->bio_cmd == BIO_DELETE &&
(softc->flags & ADA_FLAG_CAN_TRIM)) {
if (ADA_SIO)
bioq_disksort(&softc->trim_queue, bp);
else
bioq_insert_tail(&softc->trim_queue, bp);
} else {
if (ADA_SIO)
bioq_disksort(&softc->bio_queue, bp);
else
bioq_insert_tail(&softc->bio_queue, bp);
}
/*
* Schedule ourselves for performing the work.
*/
adaschedule(periph);
cam_periph_unlock(periph);
return;
}
static int
adadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
{
struct cam_periph *periph;
struct ada_softc *softc;
u_int secsize;
union ccb ccb;
struct disk *dp;
uint64_t lba;
uint16_t count;
int error = 0;
dp = arg;
periph = dp->d_drv1;
softc = (struct ada_softc *)periph->softc;
cam_periph_lock(periph);
secsize = softc->params.secsize;
lba = offset / secsize;
count = length / secsize;
if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
cam_periph_unlock(periph);
return (ENXIO);
}
if (length > 0) {
xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
cam_fill_ataio(&ccb.ataio,
0,
adadone,
CAM_DIR_OUT,
0,
(u_int8_t *) virtual,
length,
ada_default_timeout*1000);
if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
(lba + count >= ATA_MAX_28BIT_LBA ||
count >= 256)) {
ata_48bit_cmd(&ccb.ataio, ATA_WRITE_DMA48,
0, lba, count);
} else {
ata_28bit_cmd(&ccb.ataio, ATA_WRITE_DMA,
0, lba, count);
}
xpt_polled_action(&ccb);
error = cam_periph_error(&ccb,
0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
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)
printf("Aborting dump due to I/O error.\n");
cam_periph_unlock(periph);
return (error);
}
if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) {
xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
cam_fill_ataio(&ccb.ataio,
0,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->flags & ADA_FLAG_CAN_48BIT)
ata_48bit_cmd(&ccb.ataio, ATA_FLUSHCACHE48, 0, 0, 0);
else
ata_28bit_cmd(&ccb.ataio, ATA_FLUSHCACHE, 0, 0, 0);
xpt_polled_action(&ccb);
error = cam_periph_error(&ccb,
0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
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)
xpt_print(periph->path, "Synchronize cache failed\n");
}
cam_periph_unlock(periph);
return (error);
}
static void
adainit(void)
{
cam_status status;
/*
* Install a global async callback. This callback will
* receive async callbacks like "new device found".
*/
status = xpt_register_async(AC_FOUND_DEVICE, adaasync, NULL, NULL);
if (status != CAM_REQ_CMP) {
printf("ada: Failed to attach master async callback "
"due to status 0x%x!\n", status);
} else if (ada_send_ordered) {
/* Register our event handlers */
if ((EVENTHANDLER_REGISTER(power_suspend, adasuspend,
NULL, EVENTHANDLER_PRI_LAST)) == NULL)
printf("adainit: power event registration failed!\n");
if ((EVENTHANDLER_REGISTER(power_resume, adaresume,
NULL, EVENTHANDLER_PRI_LAST)) == NULL)
printf("adainit: power event registration failed!\n");
if ((EVENTHANDLER_REGISTER(shutdown_post_sync, adashutdown,
NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
printf("adainit: shutdown event registration failed!\n");
}
}
/*
* Callback from GEOM, called when it has finished cleaning up its
* resources.
*/
static void
adadiskgonecb(struct disk *dp)
{
struct cam_periph *periph;
periph = (struct cam_periph *)dp->d_drv1;
cam_periph_release(periph);
}
static void
adaoninvalidate(struct cam_periph *periph)
{
struct ada_softc *softc;
softc = (struct ada_softc *)periph->softc;
/*
* De-register any async callbacks.
*/
xpt_register_async(0, adaasync, periph, periph->path);
/*
* 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);
bioq_flush(&softc->trim_queue, NULL, ENXIO);
disk_gone(softc->disk);
xpt_print(periph->path, "lost device\n");
}
static void
adacleanup(struct cam_periph *periph)
{
struct ada_softc *softc;
softc = (struct ada_softc *)periph->softc;
xpt_print(periph->path, "removing device entry\n");
cam_periph_unlock(periph);
/*
* If we can't free the sysctl tree, oh well...
*/
if ((softc->flags & ADA_FLAG_SCTX_INIT) != 0
&& sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
xpt_print(periph->path, "can't remove sysctl context\n");
}
disk_destroy(softc->disk);
callout_drain(&softc->sendordered_c);
free(softc, M_DEVBUF);
cam_periph_lock(periph);
}
static void
adaasync(void *callback_arg, u_int32_t code,
struct cam_path *path, void *arg)
{
struct ccb_getdev cgd;
struct cam_periph *periph;
struct ada_softc *softc;
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 (cgd->protocol != PROTO_ATA)
break;
/*
* Allocate a peripheral instance for
* this device and start the probe
* process.
*/
status = cam_periph_alloc(adaregister, adaoninvalidate,
adacleanup, adastart,
"ada", CAM_PERIPH_BIO,
cgd->ccb_h.path, adaasync,
AC_FOUND_DEVICE, cgd);
if (status != CAM_REQ_CMP
&& status != CAM_REQ_INPROG)
printf("adaasync: Unable to attach to new device "
"due to status 0x%x\n", status);
break;
}
case AC_GETDEV_CHANGED:
{
softc = (struct ada_softc *)periph->softc;
xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
cgd.ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)&cgd);
if ((cgd.ident_data.capabilities1 & ATA_SUPPORT_DMA) &&
(cgd.inq_flags & SID_DMA))
softc->flags |= ADA_FLAG_CAN_DMA;
else
softc->flags &= ~ADA_FLAG_CAN_DMA;
if (cgd.ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) {
softc->flags |= ADA_FLAG_CAN_48BIT;
if (cgd.inq_flags & SID_DMA48)
softc->flags |= ADA_FLAG_CAN_DMA48;
else
softc->flags &= ~ADA_FLAG_CAN_DMA48;
} else
softc->flags &= ~(ADA_FLAG_CAN_48BIT |
ADA_FLAG_CAN_DMA48);
if ((cgd.ident_data.satacapabilities & ATA_SUPPORT_NCQ) &&
(cgd.inq_flags & SID_DMA) && (cgd.inq_flags & SID_CmdQue))
softc->flags |= ADA_FLAG_CAN_NCQ;
else
softc->flags &= ~ADA_FLAG_CAN_NCQ;
if ((cgd.ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) &&
(cgd.inq_flags & SID_DMA))
softc->flags |= ADA_FLAG_CAN_TRIM;
else
softc->flags &= ~ADA_FLAG_CAN_TRIM;
cam_periph_async(periph, code, path, arg);
break;
}
case AC_ADVINFO_CHANGED:
{
uintptr_t buftype;
buftype = (uintptr_t)arg;
if (buftype == CDAI_TYPE_PHYS_PATH) {
struct ada_softc *softc;
softc = periph->softc;
disk_attr_changed(softc->disk, "GEOM::physpath",
M_NOWAIT);
}
break;
}
case AC_SENT_BDR:
case AC_BUS_RESET:
{
softc = (struct ada_softc *)periph->softc;
cam_periph_async(periph, code, path, arg);
if (softc->state != ADA_STATE_NORMAL)
break;
xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
cgd.ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)&cgd);
if (ADA_RA >= 0 &&
cgd.ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD)
softc->state = ADA_STATE_RAHEAD;
else if (ADA_WC >= 0 &&
cgd.ident_data.support.command1 & ATA_SUPPORT_WRITECACHE)
softc->state = ADA_STATE_WCACHE;
else
break;
cam_periph_acquire(periph);
xpt_schedule(periph, CAM_PRIORITY_DEV);
}
default:
cam_periph_async(periph, code, path, arg);
break;
}
}
static void
adasysctlinit(void *context, int pending)
{
struct cam_periph *periph;
struct ada_softc *softc;
char tmpstr[80], tmpstr2[80];
periph = (struct cam_periph *)context;
/* periph was held for us when this task was enqueued */
if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
cam_periph_release(periph);
return;
}
softc = (struct ada_softc *)periph->softc;
snprintf(tmpstr, sizeof(tmpstr), "CAM ADA unit %d", periph->unit_number);
snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
sysctl_ctx_init(&softc->sysctl_ctx);
softc->flags |= ADA_FLAG_SCTX_INIT;
softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
SYSCTL_STATIC_CHILDREN(_kern_cam_ada), OID_AUTO, tmpstr2,
CTLFLAG_RD, 0, tmpstr);
if (softc->sysctl_tree == NULL) {
printf("adasysctlinit: unable to allocate sysctl tree\n");
cam_periph_release(periph);
return;
}
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "read_ahead", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->read_ahead, 0, "Enable disk read ahead.");
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "write_cache", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->write_cache, 0, "Enable disk write cache.");
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "sort_io_queue", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->sort_io_queue, 0,
"Sort IO queue to try and optimise disk access patterns");
#ifdef ADA_TEST_FAILURE
/*
* Add a 'door bell' sysctl which allows one to set it from userland
* and cause something bad to happen. For the moment, we only allow
* whacking the next read or write.
*/
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "force_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->force_read_error, 0,
"Force a read error for the next N reads.");
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "force_write_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->force_write_error, 0,
"Force a write error for the next N writes.");
SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "periodic_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
&softc->periodic_read_error, 0,
"Force a read error every N reads (don't set too low).");
#endif
cam_periph_release(periph);
}
static int
adagetattr(struct bio *bp)
{
int ret;
struct cam_periph *periph;
periph = (struct cam_periph *)bp->bio_disk->d_drv1;
if (cam_periph_acquire(periph) != CAM_REQ_CMP)
return (ENXIO);
cam_periph_lock(periph);
ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
periph->path);
cam_periph_unlock(periph);
cam_periph_release(periph);
if (ret == 0)
bp->bio_completed = bp->bio_length;
return ret;
}
static cam_status
adaregister(struct cam_periph *periph, void *arg)
{
struct ada_softc *softc;
struct ccb_pathinq cpi;
struct ccb_getdev *cgd;
char announce_buf[80], buf1[32];
struct disk_params *dp;
caddr_t match;
u_int maxio;
int legacy_id, quirks;
cgd = (struct ccb_getdev *)arg;
if (cgd == NULL) {
printf("adaregister: no getdev CCB, can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = (struct ada_softc *)malloc(sizeof(*softc), M_DEVBUF,
M_NOWAIT|M_ZERO);
if (softc == NULL) {
printf("adaregister: Unable to probe new device. "
"Unable to allocate softc\n");
return(CAM_REQ_CMP_ERR);
}
bioq_init(&softc->bio_queue);
bioq_init(&softc->trim_queue);
if ((cgd->ident_data.capabilities1 & ATA_SUPPORT_DMA) &&
(cgd->inq_flags & SID_DMA))
softc->flags |= ADA_FLAG_CAN_DMA;
if (cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) {
softc->flags |= ADA_FLAG_CAN_48BIT;
if (cgd->inq_flags & SID_DMA48)
softc->flags |= ADA_FLAG_CAN_DMA48;
}
if (cgd->ident_data.support.command2 & ATA_SUPPORT_FLUSHCACHE)
softc->flags |= ADA_FLAG_CAN_FLUSHCACHE;
if (cgd->ident_data.support.command1 & ATA_SUPPORT_POWERMGT)
softc->flags |= ADA_FLAG_CAN_POWERMGT;
if ((cgd->ident_data.satacapabilities & ATA_SUPPORT_NCQ) &&
(cgd->inq_flags & SID_DMA) && (cgd->inq_flags & SID_CmdQue))
softc->flags |= ADA_FLAG_CAN_NCQ;
if ((cgd->ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) &&
(cgd->inq_flags & SID_DMA)) {
softc->flags |= ADA_FLAG_CAN_TRIM;
softc->trim_max_ranges = TRIM_MAX_RANGES;
if (cgd->ident_data.max_dsm_blocks != 0) {
softc->trim_max_ranges =
min(cgd->ident_data.max_dsm_blocks *
ATA_DSM_BLK_RANGES, softc->trim_max_ranges);
}
}
if (cgd->ident_data.support.command2 & ATA_SUPPORT_CFA)
softc->flags |= ADA_FLAG_CAN_CFA;
periph->softc = softc;
/*
* See if this device has any quirks.
*/
match = cam_quirkmatch((caddr_t)&cgd->ident_data,
(caddr_t)ada_quirk_table,
sizeof(ada_quirk_table)/sizeof(*ada_quirk_table),
sizeof(*ada_quirk_table), ata_identify_match);
if (match != NULL)
softc->quirks = ((struct ada_quirk_entry *)match)->quirks;
else
softc->quirks = ADA_Q_NONE;
bzero(&cpi, sizeof(cpi));
xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
TASK_INIT(&softc->sysctl_task, 0, adasysctlinit, periph);
/*
* Register this media as a disk
*/
(void)cam_periph_hold(periph, PRIBIO);
cam_periph_unlock(periph);
snprintf(announce_buf, sizeof(announce_buf),
"kern.cam.ada.%d.quirks", periph->unit_number);
quirks = softc->quirks;
TUNABLE_INT_FETCH(announce_buf, &quirks);
softc->quirks = quirks;
softc->read_ahead = -1;
snprintf(announce_buf, sizeof(announce_buf),
"kern.cam.ada.%d.read_ahead", periph->unit_number);
TUNABLE_INT_FETCH(announce_buf, &softc->read_ahead);
softc->write_cache = -1;
snprintf(announce_buf, sizeof(announce_buf),
"kern.cam.ada.%d.write_cache", periph->unit_number);
TUNABLE_INT_FETCH(announce_buf, &softc->write_cache);
/* Disable queue sorting for non-rotational media by default. */
if (cgd->ident_data.media_rotation_rate == 1)
softc->sort_io_queue = 0;
else
softc->sort_io_queue = -1;
adagetparams(periph, cgd);
softc->disk = disk_alloc();
softc->disk->d_devstat = devstat_new_entry(periph->periph_name,
periph->unit_number, softc->params.secsize,
DEVSTAT_ALL_SUPPORTED,
DEVSTAT_TYPE_DIRECT |
XPORT_DEVSTAT_TYPE(cpi.transport),
DEVSTAT_PRIORITY_DISK);
softc->disk->d_open = adaopen;
softc->disk->d_close = adaclose;
softc->disk->d_strategy = adastrategy;
softc->disk->d_getattr = adagetattr;
softc->disk->d_dump = adadump;
softc->disk->d_gone = adadiskgonecb;
softc->disk->d_name = "ada";
softc->disk->d_drv1 = periph;
maxio = cpi.maxio; /* Honor max I/O size of SIM */
if (maxio == 0)
maxio = DFLTPHYS; /* traditional default */
else if (maxio > MAXPHYS)
maxio = MAXPHYS; /* for safety */
if (softc->flags & ADA_FLAG_CAN_48BIT)
maxio = min(maxio, 65536 * softc->params.secsize);
else /* 28bit ATA command limit */
maxio = min(maxio, 256 * softc->params.secsize);
softc->disk->d_maxsize = maxio;
softc->disk->d_unit = periph->unit_number;
softc->disk->d_flags = 0;
if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE)
softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
if (softc->flags & ADA_FLAG_CAN_TRIM) {
softc->disk->d_flags |= DISKFLAG_CANDELETE;
softc->disk->d_delmaxsize = softc->params.secsize *
ATA_DSM_RANGE_MAX *
softc->trim_max_ranges;
} else if ((softc->flags & ADA_FLAG_CAN_CFA) &&
!(softc->flags & ADA_FLAG_CAN_48BIT)) {
softc->disk->d_flags |= DISKFLAG_CANDELETE;
softc->disk->d_delmaxsize = 256 * softc->params.secsize;
} else
softc->disk->d_delmaxsize = maxio;
if ((cpi.hba_misc & PIM_UNMAPPED) != 0)
softc->disk->d_flags |= DISKFLAG_UNMAPPED_BIO;
strlcpy(softc->disk->d_descr, cgd->ident_data.model,
MIN(sizeof(softc->disk->d_descr), sizeof(cgd->ident_data.model)));
strlcpy(softc->disk->d_ident, cgd->ident_data.serial,
MIN(sizeof(softc->disk->d_ident), sizeof(cgd->ident_data.serial)));
softc->disk->d_hba_vendor = cpi.hba_vendor;
softc->disk->d_hba_device = cpi.hba_device;
softc->disk->d_hba_subvendor = cpi.hba_subvendor;
softc->disk->d_hba_subdevice = cpi.hba_subdevice;
softc->disk->d_sectorsize = softc->params.secsize;
softc->disk->d_mediasize = (off_t)softc->params.sectors *
softc->params.secsize;
if (ata_physical_sector_size(&cgd->ident_data) !=
softc->params.secsize) {
softc->disk->d_stripesize =
ata_physical_sector_size(&cgd->ident_data);
softc->disk->d_stripeoffset = (softc->disk->d_stripesize -
ata_logical_sector_offset(&cgd->ident_data)) %
softc->disk->d_stripesize;
} else if (softc->quirks & ADA_Q_4K) {
softc->disk->d_stripesize = 4096;
softc->disk->d_stripeoffset = 0;
}
softc->disk->d_fwsectors = softc->params.secs_per_track;
softc->disk->d_fwheads = softc->params.heads;
ata_disk_firmware_geom_adjust(softc->disk);
if (ada_legacy_aliases) {
#ifdef ATA_STATIC_ID
legacy_id = xpt_path_legacy_ata_id(periph->path);
#else
legacy_id = softc->disk->d_unit;
#endif
if (legacy_id >= 0) {
snprintf(announce_buf, sizeof(announce_buf),
"kern.devalias.%s%d",
softc->disk->d_name, softc->disk->d_unit);
snprintf(buf1, sizeof(buf1),
"ad%d", legacy_id);
setenv(announce_buf, buf1);
}
} else
legacy_id = -1;
/*
* Acquire a reference to the periph before we register with GEOM.
* We'll release this reference once GEOM calls us back (via
* adadiskgonecb()) telling us that our provider has been freed.
*/
if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
xpt_print(periph->path, "%s: lost periph during "
"registration!\n", __func__);
cam_periph_lock(periph);
return (CAM_REQ_CMP_ERR);
}
disk_create(softc->disk, DISK_VERSION);
cam_periph_lock(periph);
cam_periph_unhold(periph);
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);
xpt_announce_periph(periph, announce_buf);
xpt_announce_quirks(periph, softc->quirks, ADA_Q_BIT_STRING);
if (legacy_id >= 0)
printf("%s%d: Previously was known as ad%d\n",
periph->periph_name, periph->unit_number, legacy_id);
/*
* Create our sysctl variables, now that we know
* we have successfully attached.
*/
cam_periph_acquire(periph);
taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task);
/*
* 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_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
AC_GETDEV_CHANGED | AC_ADVINFO_CHANGED,
adaasync, periph, periph->path);
/*
* Schedule a periodic event to occasionally send an
* ordered tag to a device.
*/
callout_init_mtx(&softc->sendordered_c, periph->sim->mtx, 0);
callout_reset(&softc->sendordered_c,
(ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
adasendorderedtag, softc);
if (ADA_RA >= 0 &&
cgd->ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD) {
softc->state = ADA_STATE_RAHEAD;
cam_periph_acquire(periph);
xpt_schedule(periph, CAM_PRIORITY_DEV);
} else if (ADA_WC >= 0 &&
cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
softc->state = ADA_STATE_WCACHE;
cam_periph_acquire(periph);
xpt_schedule(periph, CAM_PRIORITY_DEV);
} else
softc->state = ADA_STATE_NORMAL;
return(CAM_REQ_CMP);
}
static void
adastart(struct cam_periph *periph, union ccb *start_ccb)
{
struct ada_softc *softc = (struct ada_softc *)periph->softc;
struct ccb_ataio *ataio = &start_ccb->ataio;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("adastart\n"));
switch (softc->state) {
case ADA_STATE_NORMAL:
{
struct bio *bp;
u_int8_t tag_code;
/* Execute immediate CCB if waiting. */
if (periph->immediate_priority <= periph->pinfo.priority) {
CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
("queuing for immediate ccb\n"));
start_ccb->ccb_h.ccb_state = ADA_CCB_WAITING;
SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
periph_links.sle);
periph->immediate_priority = CAM_PRIORITY_NONE;
wakeup(&periph->ccb_list);
/* Have more work to do, so ensure we stay scheduled */
adaschedule(periph);
break;
}
/* Run TRIM if not running yet. */
if (!softc->trim_running &&
(bp = bioq_first(&softc->trim_queue)) != 0) {
struct trim_request *req = &softc->trim_req;
struct bio *bp1;
uint64_t lastlba = (uint64_t)-1;
int bps = 0, c, lastcount = 0, off, ranges = 0;
softc->trim_running = 1;
bzero(req, sizeof(*req));
bp1 = bp;
do {
uint64_t lba = bp1->bio_pblkno;
int count = bp1->bio_bcount /
softc->params.secsize;
bioq_remove(&softc->trim_queue, bp1);
/* Try to extend the previous range. */
if (lba == lastlba) {
c = min(count, ATA_DSM_RANGE_MAX - lastcount);
lastcount += c;
off = (ranges - 1) * ATA_DSM_RANGE_SIZE;
req->data[off + 6] = lastcount & 0xff;
req->data[off + 7] =
(lastcount >> 8) & 0xff;
count -= c;
lba += c;
}
while (count > 0) {
c = min(count, ATA_DSM_RANGE_MAX);
off = ranges * ATA_DSM_RANGE_SIZE;
req->data[off + 0] = lba & 0xff;
req->data[off + 1] = (lba >> 8) & 0xff;
req->data[off + 2] = (lba >> 16) & 0xff;
req->data[off + 3] = (lba >> 24) & 0xff;
req->data[off + 4] = (lba >> 32) & 0xff;
req->data[off + 5] = (lba >> 40) & 0xff;
req->data[off + 6] = c & 0xff;
req->data[off + 7] = (c >> 8) & 0xff;
lba += c;
count -= c;
lastcount = c;
ranges++;
/*
* Its the caller's responsibility to ensure the
* request will fit so we don't need to check for
* overrun here
*/
}
lastlba = lba;
req->bps[bps++] = bp1;
bp1 = bioq_first(&softc->trim_queue);
if (bps >= TRIM_MAX_BIOS ||
bp1 == NULL ||
bp1->bio_bcount / softc->params.secsize >
(softc->trim_max_ranges - ranges) *
ATA_DSM_RANGE_MAX)
break;
} while (1);
cam_fill_ataio(ataio,
ada_retry_count,
adadone,
CAM_DIR_OUT,
0,
req->data,
((ranges + ATA_DSM_BLK_RANGES - 1) /
ATA_DSM_BLK_RANGES) * ATA_DSM_BLK_SIZE,
ada_default_timeout * 1000);
ata_48bit_cmd(ataio, ATA_DATA_SET_MANAGEMENT,
ATA_DSM_TRIM, 0, (ranges + ATA_DSM_BLK_RANGES -
1) / ATA_DSM_BLK_RANGES);
start_ccb->ccb_h.ccb_state = ADA_CCB_TRIM;
goto out;
}
/* Run regular command. */
bp = bioq_first(&softc->bio_queue);
if (bp == NULL) {
xpt_release_ccb(start_ccb);
break;
}
bioq_remove(&softc->bio_queue, bp);
if ((bp->bio_flags & BIO_ORDERED) != 0
|| (softc->flags & ADA_FLAG_NEED_OTAG) != 0) {
softc->flags &= ~ADA_FLAG_NEED_OTAG;
softc->ordered_tag_count++;
tag_code = 0;
} else {
tag_code = 1;
}
switch (bp->bio_cmd) {
case BIO_READ:
case BIO_WRITE:
{
uint64_t lba = bp->bio_pblkno;
uint16_t count = bp->bio_bcount / softc->params.secsize;
#ifdef ADA_TEST_FAILURE
int fail = 0;
/*
* Support the failure ioctls. If the command is a
* read, and there are pending forced read errors, or
* if a write and pending write errors, then fail this
* operation with EIO. This is useful for testing
* purposes. Also, support having every Nth read fail.
*
* This is a rather blunt tool.
*/
if (bp->bio_cmd == BIO_READ) {
if (softc->force_read_error) {
softc->force_read_error--;
fail = 1;
}
if (softc->periodic_read_error > 0) {
if (++softc->periodic_read_count >=
softc->periodic_read_error) {
softc->periodic_read_count = 0;
fail = 1;
}
}
} else {
if (softc->force_write_error) {
softc->force_write_error--;
fail = 1;
}
}
if (fail) {
bp->bio_error = EIO;
bp->bio_flags |= BIO_ERROR;
biodone(bp);
xpt_release_ccb(start_ccb);
adaschedule(periph);
return;
}
#endif
KASSERT((bp->bio_flags & BIO_UNMAPPED) == 0 ||
round_page(bp->bio_bcount + bp->bio_ma_offset) /
PAGE_SIZE == bp->bio_ma_n,
("Short bio %p", bp));
cam_fill_ataio(ataio,
ada_retry_count,
adadone,
(bp->bio_cmd == BIO_READ ? CAM_DIR_IN :
CAM_DIR_OUT) | ((bp->bio_flags & BIO_UNMAPPED)
!= 0 ? CAM_DATA_BIO : 0),
tag_code,
((bp->bio_flags & BIO_UNMAPPED) != 0) ? (void *)bp :
bp->bio_data,
bp->bio_bcount,
ada_default_timeout*1000);
if ((softc->flags & ADA_FLAG_CAN_NCQ) && tag_code) {
if (bp->bio_cmd == BIO_READ) {
ata_ncq_cmd(ataio, ATA_READ_FPDMA_QUEUED,
lba, count);
} else {
ata_ncq_cmd(ataio, ATA_WRITE_FPDMA_QUEUED,
lba, count);
}
} else if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
(lba + count >= ATA_MAX_28BIT_LBA ||
count > 256)) {
if (softc->flags & ADA_FLAG_CAN_DMA48) {
if (bp->bio_cmd == BIO_READ) {
ata_48bit_cmd(ataio, ATA_READ_DMA48,
0, lba, count);
} else {
ata_48bit_cmd(ataio, ATA_WRITE_DMA48,
0, lba, count);
}
} else {
if (bp->bio_cmd == BIO_READ) {
ata_48bit_cmd(ataio, ATA_READ_MUL48,
0, lba, count);
} else {
ata_48bit_cmd(ataio, ATA_WRITE_MUL48,
0, lba, count);
}
}
} else {
if (count == 256)
count = 0;
if (softc->flags & ADA_FLAG_CAN_DMA) {
if (bp->bio_cmd == BIO_READ) {
ata_28bit_cmd(ataio, ATA_READ_DMA,
0, lba, count);
} else {
ata_28bit_cmd(ataio, ATA_WRITE_DMA,
0, lba, count);
}
} else {
if (bp->bio_cmd == BIO_READ) {
ata_28bit_cmd(ataio, ATA_READ_MUL,
0, lba, count);
} else {
ata_28bit_cmd(ataio, ATA_WRITE_MUL,
0, lba, count);
}
}
}
break;
}
case BIO_DELETE:
{
uint64_t lba = bp->bio_pblkno;
uint16_t count = bp->bio_bcount / softc->params.secsize;
cam_fill_ataio(ataio,
ada_retry_count,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (count >= 256)
count = 0;
ata_28bit_cmd(ataio, ATA_CFA_ERASE, 0, lba, count);
break;
}
case BIO_FLUSH:
cam_fill_ataio(ataio,
1,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->flags & ADA_FLAG_CAN_48BIT)
ata_48bit_cmd(ataio, ATA_FLUSHCACHE48, 0, 0, 0);
else
ata_28bit_cmd(ataio, ATA_FLUSHCACHE, 0, 0, 0);
break;
}
start_ccb->ccb_h.ccb_state = ADA_CCB_BUFFER_IO;
out:
start_ccb->ccb_h.ccb_bp = bp;
softc->outstanding_cmds++;
xpt_action(start_ccb);
/* May have more work to do, so ensure we stay scheduled */
adaschedule(periph);
break;
}
case ADA_STATE_RAHEAD:
case ADA_STATE_WCACHE:
{
if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
softc->state = ADA_STATE_NORMAL;
xpt_release_ccb(start_ccb);
cam_periph_release_locked(periph);
return;
}
cam_fill_ataio(ataio,
1,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->state == ADA_STATE_RAHEAD) {
ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_RA ?
ATA_SF_ENAB_RCACHE : ATA_SF_DIS_RCACHE, 0, 0);
start_ccb->ccb_h.ccb_state = ADA_CCB_RAHEAD;
} else {
ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_WC ?
ATA_SF_ENAB_WCACHE : ATA_SF_DIS_WCACHE, 0, 0);
start_ccb->ccb_h.ccb_state = ADA_CCB_WCACHE;
}
start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
xpt_action(start_ccb);
break;
}
}
}
static void
adadone(struct cam_periph *periph, union ccb *done_ccb)
{
struct ada_softc *softc;
struct ccb_ataio *ataio;
struct ccb_getdev *cgd;
struct cam_path *path;
softc = (struct ada_softc *)periph->softc;
ataio = &done_ccb->ataio;
path = done_ccb->ccb_h.path;
CAM_DEBUG(path, CAM_DEBUG_TRACE, ("adadone\n"));
switch (ataio->ccb_h.ccb_state & ADA_CCB_TYPE_MASK) {
case ADA_CCB_BUFFER_IO:
case ADA_CCB_TRIM:
{
struct bio *bp;
bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
int error;
error = adaerror(done_ccb, 0, 0);
if (error == ERESTART) {
/* A retry was scheduled, so just return. */
return;
}
if (error != 0) {
bp->bio_error = error;
bp->bio_resid = bp->bio_bcount;
bp->bio_flags |= BIO_ERROR;
} else {
bp->bio_resid = ataio->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(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 = ataio->resid;
if (ataio->resid > 0)
bp->bio_flags |= BIO_ERROR;
}
softc->outstanding_cmds--;
if (softc->outstanding_cmds == 0)
softc->flags |= ADA_FLAG_WENT_IDLE;
if ((ataio->ccb_h.ccb_state & ADA_CCB_TYPE_MASK) ==
ADA_CCB_TRIM) {
struct trim_request *req =
(struct trim_request *)ataio->data_ptr;
int i;
for (i = 1; i < TRIM_MAX_BIOS && req->bps[i]; i++) {
struct bio *bp1 = req->bps[i];
bp1->bio_resid = bp->bio_resid;
bp1->bio_error = bp->bio_error;
if (bp->bio_flags & BIO_ERROR)
bp1->bio_flags |= BIO_ERROR;
biodone(bp1);
}
softc->trim_running = 0;
biodone(bp);
adaschedule(periph);
} else
biodone(bp);
break;
}
case ADA_CCB_RAHEAD:
{
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if (adaerror(done_ccb, 0, 0) == ERESTART) {
out:
/* Drop freeze taken due to CAM_DEV_QFREEZE */
cam_release_devq(path, 0, 0, 0, FALSE);
return;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
cam_release_devq(path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
}
}
/*
* Since our peripheral may be invalidated by an error
* above or an external event, we must release our CCB
* before releasing the reference on the peripheral.
* The peripheral will only go away once the last reference
* is removed, and we need it around for the CCB release
* operation.
*/
cgd = (struct ccb_getdev *)done_ccb;
xpt_setup_ccb(&cgd->ccb_h, path, CAM_PRIORITY_NORMAL);
cgd->ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action((union ccb *)cgd);
if (ADA_WC >= 0 &&
cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
softc->state = ADA_STATE_WCACHE;
xpt_release_ccb(done_ccb);
xpt_schedule(periph, CAM_PRIORITY_DEV);
goto out;
}
softc->state = ADA_STATE_NORMAL;
xpt_release_ccb(done_ccb);
/* Drop freeze taken due to CAM_DEV_QFREEZE */
cam_release_devq(path, 0, 0, 0, FALSE);
adaschedule(periph);
cam_periph_release_locked(periph);
return;
}
case ADA_CCB_WCACHE:
{
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
if (adaerror(done_ccb, 0, 0) == ERESTART) {
goto out;
} else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
cam_release_devq(path,
/*relsim_flags*/0,
/*reduction*/0,
/*timeout*/0,
/*getcount_only*/0);
}
}
softc->state = ADA_STATE_NORMAL;
/*
* Since our peripheral may be invalidated by an error
* above or an external event, we must release our CCB
* before releasing the reference on the peripheral.
* The peripheral will only go away once the last reference
* is removed, and we need it around for the CCB release
* operation.
*/
xpt_release_ccb(done_ccb);
/* Drop freeze taken due to CAM_DEV_QFREEZE */
cam_release_devq(path, 0, 0, 0, FALSE);
adaschedule(periph);
cam_periph_release_locked(periph);
return;
}
case ADA_CCB_WAITING:
{
/* Caller will release the CCB */
wakeup(&done_ccb->ccb_h.cbfcnp);
return;
}
case ADA_CCB_DUMP:
/* No-op. We're polling */
return;
default:
break;
}
xpt_release_ccb(done_ccb);
}
static int
adaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
{
return(cam_periph_error(ccb, cam_flags, sense_flags, NULL));
}
static void
adagetparams(struct cam_periph *periph, struct ccb_getdev *cgd)
{
struct ada_softc *softc = (struct ada_softc *)periph->softc;
struct disk_params *dp = &softc->params;
u_int64_t lbasize48;
u_int32_t lbasize;
dp->secsize = ata_logical_sector_size(&cgd->ident_data);
if ((cgd->ident_data.atavalid & ATA_FLAG_54_58) &&
cgd->ident_data.current_heads && cgd->ident_data.current_sectors) {
dp->heads = cgd->ident_data.current_heads;
dp->secs_per_track = cgd->ident_data.current_sectors;
dp->cylinders = cgd->ident_data.cylinders;
dp->sectors = (u_int32_t)cgd->ident_data.current_size_1 |
((u_int32_t)cgd->ident_data.current_size_2 << 16);
} else {
dp->heads = cgd->ident_data.heads;
dp->secs_per_track = cgd->ident_data.sectors;
dp->cylinders = cgd->ident_data.cylinders;
dp->sectors = cgd->ident_data.cylinders * dp->heads * dp->secs_per_track;
}
lbasize = (u_int32_t)cgd->ident_data.lba_size_1 |
((u_int32_t)cgd->ident_data.lba_size_2 << 16);
/* use the 28bit LBA size if valid or bigger than the CHS mapping */
if (cgd->ident_data.cylinders == 16383 || dp->sectors < lbasize)
dp->sectors = lbasize;
/* use the 48bit LBA size if valid */
lbasize48 = ((u_int64_t)cgd->ident_data.lba_size48_1) |
((u_int64_t)cgd->ident_data.lba_size48_2 << 16) |
((u_int64_t)cgd->ident_data.lba_size48_3 << 32) |
((u_int64_t)cgd->ident_data.lba_size48_4 << 48);
if ((cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) &&
lbasize48 > ATA_MAX_28BIT_LBA)
dp->sectors = lbasize48;
}
static void
adasendorderedtag(void *arg)
{
struct ada_softc *softc = arg;
if (ada_send_ordered) {
if ((softc->ordered_tag_count == 0)
&& ((softc->flags & ADA_FLAG_WENT_IDLE) == 0)) {
softc->flags |= ADA_FLAG_NEED_OTAG;
}
if (softc->outstanding_cmds > 0)
softc->flags &= ~ADA_FLAG_WENT_IDLE;
softc->ordered_tag_count = 0;
}
/* Queue us up again */
callout_reset(&softc->sendordered_c,
(ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
adasendorderedtag, softc);
}
/*
* Step through all ADA peripheral drivers, and if the device is still open,
* sync the disk cache to physical media.
*/
static void
adaflush(void)
{
struct cam_periph *periph;
struct ada_softc *softc;
union ccb *ccb;
int error;
CAM_PERIPH_FOREACH(periph, &adadriver) {
/* If we paniced with lock held - not recurse here. */
if (cam_periph_owned(periph))
continue;
cam_periph_lock(periph);
softc = (struct ada_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 & ADA_FLAG_OPEN) == 0) ||
(softc->flags & ADA_FLAG_CAN_FLUSHCACHE) == 0) {
cam_periph_unlock(periph);
continue;
}
ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
cam_fill_ataio(&ccb->ataio,
0,
adadone,
CAM_DIR_NONE,
0,
NULL,
0,
ada_default_timeout*1000);
if (softc->flags & ADA_FLAG_CAN_48BIT)
ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
else
ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
/*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY,
softc->disk->d_devstat);
if (error != 0)
xpt_print(periph->path, "Synchronize cache failed\n");
xpt_release_ccb(ccb);
cam_periph_unlock(periph);
}
}
static void
adaspindown(uint8_t cmd, int flags)
{
struct cam_periph *periph;
struct ada_softc *softc;
union ccb *ccb;
int error;
CAM_PERIPH_FOREACH(periph, &adadriver) {
/* If we paniced with lock held - not recurse here. */
if (cam_periph_owned(periph))
continue;
cam_periph_lock(periph);
softc = (struct ada_softc *)periph->softc;
/*
* We only spin-down the drive if it is capable of it..
*/
if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
cam_periph_unlock(periph);
continue;
}
if (bootverbose)
xpt_print(periph->path, "spin-down\n");
ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
cam_fill_ataio(&ccb->ataio,
0,
adadone,
CAM_DIR_NONE | flags,
0,
NULL,
0,
ada_default_timeout*1000);
ata_28bit_cmd(&ccb->ataio, cmd, 0, 0, 0);
error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
/*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY,
softc->disk->d_devstat);
if (error != 0)
xpt_print(periph->path, "Spin-down disk failed\n");
xpt_release_ccb(ccb);
cam_periph_unlock(periph);
}
}
static void
adashutdown(void *arg, int howto)
{
adaflush();
if (ada_spindown_shutdown != 0 &&
(howto & (RB_HALT | RB_POWEROFF)) != 0)
adaspindown(ATA_STANDBY_IMMEDIATE, 0);
}
static void
adasuspend(void *arg)
{
adaflush();
if (ada_spindown_suspend != 0)
adaspindown(ATA_SLEEP, CAM_DEV_QFREEZE);
}
static void
adaresume(void *arg)
{
struct cam_periph *periph;
struct ada_softc *softc;
if (ada_spindown_suspend == 0)
return;
CAM_PERIPH_FOREACH(periph, &adadriver) {
cam_periph_lock(periph);
softc = (struct ada_softc *)periph->softc;
/*
* We only spin-down the drive if it is capable of it..
*/
if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
cam_periph_unlock(periph);
continue;
}
if (bootverbose)
xpt_print(periph->path, "resume\n");
/*
* Drop freeze taken due to CAM_DEV_QFREEZE flag set on
* sleep request.
*/
cam_release_devq(periph->path,
/*relsim_flags*/0,
/*openings*/0,
/*timeout*/0,
/*getcount_only*/0);
cam_periph_unlock(periph);
}
}
#endif /* _KERNEL */
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