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9e259819a6
freebsd-dev/sys/cam/scsi/scsi_da.c
Alexander Motin 9e259819a6 Add BIO_DELETE support for SCSI Direct Access devices (da). 
Depending on device capabilities use different methods to implement it.
Currently used method can be read/set via kern.cam.da.X.delete_method
sysctls. Possible values are:
 NONE - no provisioning support reported by the device;
 DISABLE - provisioning support was disabled because of errors;
 ZERO - use WRITE SAME (10) command to write zeroes;
 WS10 - use WRITE SAME (10) command with UNMAP bit set;
 WS16 - use WRITE SAME (16) command with UNMAP bit set;
 UNMAP - use UNMAP command (equivalent of the ATA DSM TRIM command).
The last two methods (UNMAP and WS16) are defined by SBC specification and
the UNMAP method is the most advanced one. The rest of methods I've found
supported in Linux, and as soon as they were trivial to implement, then
why not? Hope they will be useful in some cases.

Unluckily I have no devices properly reporting parameters of the logical
block provisioning support via respective VPD pages (0xB0 and 0xB2). So
all info I have/use now is the flag telling whether logical block
provisioning is supported or not. As result, specific methods chosen now
by trying different ones in order (UNMAP, WS16, DISABLE) and checking
completion status to fallback if needed. I don't expect problems from this,
as if something go wrong, it should just disable itself. It may disable
even too aggressively if only some command parameter misfit.

Unlike Linux, which executes each delete with separate request, I've
implemented here the same request aggregation as implemented in ada driver.
Tests on SSDs I have show much better results doing it this way: above
8GB/s of the linear delete on Intel SATA SSD on LSI SAS HBA (mps).

Reviewed by:	silence on scsi@
MFC after:	2 month
Sponsored by:	iXsystems, Inc.
2012-01-13 10:21:17 +00:00

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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>
#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 <geom/geom.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/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_FLAG_CAN_RC16 = 0x400
} 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_Q_4K = 0x08
} 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_DELETE = 0x06,
DA_CCB_TYPE_MASK = 0x0F,
DA_CCB_RETRY_UA = 0x10
} da_ccb_state;
typedef enum {
DA_DELETE_NONE,
DA_DELETE_DISABLE,
DA_DELETE_ZERO,
DA_DELETE_WS10,
DA_DELETE_WS16,
DA_DELETE_UNMAP,
DA_DELETE_MAX = DA_DELETE_UNMAP
} da_delete_methods;
static const char *da_delete_method_names[] =
{ "NONE", "DISABLE", "ZERO", "WS10", "WS16", "UNMAP" };
/* 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 */
u_int stripesize;
u_int stripeoffset;
};
#define UNMAP_MAX_RANGES 512
struct da_softc {
struct bio_queue_head bio_queue;
struct bio_queue_head delete_queue;
struct bio_queue_head delete_run_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 error_inject;
int ordered_tag_count;
int outstanding_cmds;
int unmap_max_ranges;
int unmap_max_lba;
int delete_running;
da_delete_methods delete_method;
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 callout sendordered_c;
uint64_t wwpn;
uint8_t unmap_buf[UNMAP_MAX_RANGES * 16 + 8];
};
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
},
{
/*
* Motorola E398 Mobile Phone (TransFlash memory card).
* Reported by: Wojciech A. Koszek <dunstan@FreeBSD.czest.pl>
* PR: usb/89889
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "Motorola" , "Motorola Phone",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Qware BeatZkey! Pro
* PR: usb/79164
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "GENERIC", "USB DISK DEVICE",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Time DPA20B 1GB MP3 Player
* PR: usb/81846
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "USB2.0*", "(FS) FLASH DISK*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Samsung USB key 128Mb
* PR: usb/90081
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "USB-DISK", "FreeDik-FlashUsb",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Kingston DataTraveler 2.0 USB Flash memory.
* PR: usb/89196
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston", "DataTraveler 2.0",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Creative MUVO Slim mp3 player (USB)
* PR: usb/86131
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
},
{
/*
* United MP5512 Portable MP3 Player (2-in-1 USB DISK/MP3)
* PR: usb/80487
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "MUSIC DISK",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* SanDisk Micro Cruzer 128MB
* PR: usb/75970
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk" , "Micro Cruzer",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* TOSHIBA TransMemory USB sticks
* PR: kern/94660
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "TOSHIBA", "TransMemory",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* PNY USB Flash keys
* PR: usb/75578, usb/72344, usb/65436
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "*" , "USB DISK*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Genesys 6-in-1 Card Reader
* PR: usb/94647
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "STORAGE DEVICE*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Rekam Digital CAMERA
* PR: usb/98713
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "CAMERA*", "4MP-9J6*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* iRiver H10 MP3 player
* PR: usb/102547
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "H10*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* iRiver U10 MP3 player
* PR: usb/92306
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "U10*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* X-Micro Flash Disk
* PR: usb/96901
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "X-Micro", "Flash Disk",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* EasyMP3 EM732X USB 2.0 Flash MP3 Player
* PR: usb/96546
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "EM732X", "MP3 Player*",
"1.00"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Denver MP3 player
* PR: usb/107101
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "DENVER", "MP3 PLAYER",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Philips USB Key Audio KEY013
* PR: usb/68412
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
},
{
/*
* JNC MP3 Player
* PR: usb/94439
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "JNC*" , "MP3 Player*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* SAMSUNG MP0402H
* PR: usb/108427
*/
{T_DIRECT, SIP_MEDIA_FIXED, "SAMSUNG", "MP0402H", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* I/O Magic USB flash - Giga Bank
* PR: usb/108810
*/
{T_DIRECT, SIP_MEDIA_FIXED, "GS-Magic", "stor*", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* JoyFly 128mb USB Flash Drive
* PR: 96133
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "Flash Disk*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* ChipsBnk usb stick
* PR: 103702
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "ChipsBnk", "USB*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Storcase (Kingston) InfoStation IFS FC2/SATA-R 201A
* PR: 129858
*/
{T_DIRECT, SIP_MEDIA_FIXED, "IFS", "FC2/SATA-R*",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Samsung YP-U3 mp3-player
* PR: 125398
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "Samsung", "YP-U3",
"*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
{T_DIRECT, SIP_MEDIA_REMOVABLE, "Netac", "OnlyDisk*",
"2000"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
},
{
/*
* Sony Cyber-Shot DSC cameras
* PR: usb/137035
*/
{T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
/*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
},
/* ATA/SATA devices over SAS/USB/... */
{
/* Hitachi Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "Hitachi", "H??????????E3*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Samsung Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "SAMSUNG HD155UI*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Samsung Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "SAMSUNG", "HD155UI*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Samsung Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "SAMSUNG HD204UI*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Samsung Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "SAMSUNG", "HD204UI*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Barracuda Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST????DL*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Barracuda Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST????DL", "*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Barracuda Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST???DM*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Barracuda Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST???DM*", "*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Barracuda Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST????DM*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Barracuda Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST????DM", "*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST9500423AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST950042", "3AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST9500424AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST950042", "4AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST9640423AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST964042", "3AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST9640424AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST964042", "4AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST9750420AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST975042", "0AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST9750422AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST975042", "2AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST9750423AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST975042", "3AS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Thin Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "ST???LT*", "*" },
/*quirks*/DA_Q_4K
},
{
/* Seagate Momentus Thin Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ST???LT*", "*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "WDC WD????RS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "WDC WD??", "??RS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "WDC WD????RX*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "WDC WD??", "??RX*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "WDC WD??????RS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "WDC WD??", "????RS*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "WDC WD??????RX*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Caviar Green Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "WDC WD??", "????RX*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Scorpio Black Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "WDC WD???PKT*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Scorpio Black Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "WDC WD??", "?PKT*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Scorpio Black Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "WDC WD?????PKT*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Scorpio Black Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "WDC WD??", "???PKT*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Scorpio Blue Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "WDC WD???PVT*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Scorpio Blue Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "WDC WD??", "?PVT*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Scorpio Blue Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "ATA", "WDC WD?????PVT*", "*" },
/*quirks*/DA_Q_4K
},
{
/* WDC Scorpio Blue Advanced Format (4k) drives */
{ T_DIRECT, SIP_MEDIA_FIXED, "WDC WD??", "???PVT*", "*" },
/*quirks*/DA_Q_4K
},
};
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 int dadeletemethodsysctl(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, u_int lbppbe, u_int lalba);
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
#ifndef DA_DEFAULT_SEND_ORDERED
#define DA_DEFAULT_SEND_ORDERED 1
#endif
static int da_retry_count = DA_DEFAULT_RETRY;
static int da_default_timeout = DA_DEFAULT_TIMEOUT;
static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
static 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);
SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
&da_send_ordered, 0, "Send Ordered Tags");
TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
/*
* 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 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
static int
daopen(struct disk *dp)
{
struct cam_periph *periph;
struct da_softc *softc;
int unit;
int error;
periph = (struct cam_periph *)dp->d_drv1;
if (periph == NULL) {
return (ENXIO);
}
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);
}
unit = periph->unit_number;
softc = (struct da_softc *)periph->softc;
softc->flags |= DA_FLAG_OPEN;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
("daopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit,
unit));
if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
/* Invalidate our pack information. */
softc->flags &= ~DA_FLAG_PACK_INVALID;
}
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;
softc->disk->d_stripesize = softc->params.stripesize;
softc->disk->d_stripeoffset = softc->params.stripeoffset;
/* 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 (softc->delete_method > DA_DELETE_DISABLE)
softc->disk->d_flags |= DISKFLAG_CANDELETE;
else
softc->disk->d_flags &= ~DISKFLAG_CANDELETE;
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_unhold(periph);
cam_periph_unlock(periph);
if (error != 0) {
cam_periph_release(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 (0);
cam_periph_lock(periph);
if ((error = cam_periph_hold(periph, PRIBIO)) != 0) {
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
softc = (struct da_softc *)periph->softc;
if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0
&& (softc->flags & DA_FLAG_PACK_INVALID) == 0) {
union ccb *ccb;
ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
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_len(&ccb->csio.sense_data,
ccb->csio.sense_len - ccb->csio.sense_resid,
&error_code, &sense_key, &asc, &ascq,
/*show_errors*/ 1);
if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
scsi_sense_print(&ccb->csio);
} else {
xpt_print(periph->path, "Synchronize cache "
"failed, status == 0x%x, scsi status == "
"0x%x\n", ccb->csio.ccb_h.status,
ccb->csio.scsi_status);
}
}
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_unhold(periph);
cam_periph_unlock(periph);
cam_periph_release(periph);
return (0);
}
static void
daschedule(struct cam_periph *periph)
{
struct da_softc *softc = (struct da_softc *)periph->softc;
uint32_t prio;
/* 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->delete_running && bioq_first(&softc->delete_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
dastrategy(struct bio *bp)
{
struct cam_periph *periph;
struct da_softc *softc;
periph = (struct cam_periph *)bp->bio_disk->d_drv1;
if (periph == NULL) {
biofinish(bp, NULL, ENXIO);
return;
}
softc = (struct da_softc *)periph->softc;
cam_periph_lock(periph);
/*
* If the device has been made invalid, error out
*/
if ((softc->flags & DA_FLAG_PACK_INVALID)) {
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) {
if (bp->bio_bcount == 0)
biodone(bp);
else
bioq_disksort(&softc->delete_queue, bp);
} else
bioq_disksort(&softc->bio_queue, bp);
/*
* Schedule ourselves for performing the work.
*/
daschedule(periph);
cam_periph_unlock(periph);
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;
cam_periph_lock(periph);
secsize = softc->params.secsize;
if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
cam_periph_unlock(periph);
return (ENXIO);
}
if (length > 0) {
xpt_setup_ccb(&csio.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
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);
}
cam_periph_unlock(periph);
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, CAM_PRIORITY_NORMAL);
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_len(&csio.sense_data,
csio.sense_len - csio.sense_resid,
&error_code, &sense_key, &asc, &ascq,
/*show_errors*/ 1);
if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
scsi_sense_print(&csio);
} else {
xpt_print(periph->path, "Synchronize cache "
"failed, status == 0x%x, scsi status == "
"0x%x\n", csio.ccb_h.status,
csio.scsi_status);
}
}
}
cam_periph_unlock(periph);
return (0);
}
static int
dagetattr(struct bio *bp)
{
int ret = -1;
struct cam_periph *periph;
if (bp->bio_disk == NULL || bp->bio_disk->d_drv1 == NULL)
return ENXIO;
periph = (struct cam_periph *)bp->bio_disk->d_drv1;
if (periph->path == NULL)
return ENXIO;
ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
periph->path);
if (ret == 0)
bp->bio_completed = bp->bio_length;
return ret;
}
static void
dainit(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, daasync, NULL, NULL);
if (status != CAM_REQ_CMP) {
printf("da: Failed to attach master async callback "
"due to status 0x%x!\n", status);
} else if (da_send_ordered) {
/* 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)
{
struct da_softc *softc;
softc = (struct da_softc *)periph->softc;
/*
* De-register any async callbacks.
*/
xpt_register_async(0, daasync, periph, periph->path);
softc->flags |= DA_FLAG_PACK_INVALID;
/*
* 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->delete_queue, NULL, ENXIO);
disk_gone(softc->disk);
xpt_print(periph->path, "lost device - %d outstanding, %d refs\n",
softc->outstanding_cmds, periph->refcount);
}
static void
dacleanup(struct cam_periph *periph)
{
struct da_softc *softc;
softc = (struct da_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 & DA_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
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 (cgd->protocol != PROTO_SCSI)
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);
return;
}
case AC_ADVINFO_CHANGED:
{
uintptr_t buftype;
buftype = (uintptr_t)arg;
if (buftype == CDAI_TYPE_PHYS_PATH) {
struct da_softc *softc;
softc = periph->softc;
disk_attr_changed(softc->disk, "GEOM::physpath",
M_NOWAIT);
}
break;
}
case AC_SENT_BDR:
case AC_BUS_RESET:
{
struct da_softc *softc;
struct ccb_hdr *ccbh;
softc = (struct da_softc *)periph->softc;
/*
* 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;
break;
}
default:
break;
}
cam_periph_async(periph, code, path, arg);
}
static void
dasysctlinit(void *context, int pending)
{
struct cam_periph *periph;
struct da_softc *softc;
char tmpstr[80], tmpstr2[80];
struct ccb_trans_settings cts;
periph = (struct cam_periph *)context;
/*
* periph was held for us when this task was enqueued
*/
if (periph->flags & CAM_PERIPH_INVALID) {
cam_periph_release(periph);
return;
}
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);
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");
cam_periph_release(periph);
return;
}
/*
* Now register the sysctl handler, so the user can change the value on
* the fly.
*/
SYSCTL_ADD_PROC(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "delete_method", CTLTYPE_STRING | CTLFLAG_RW,
&softc->delete_method, 0, dadeletemethodsysctl, "A",
"BIO_DELETE execution method");
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");
SYSCTL_ADD_INT(&softc->sysctl_ctx,
SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO,
"error_inject",
CTLFLAG_RW,
&softc->error_inject,
0,
"error_inject leaf");
/*
* Add some addressing info.
*/
memset(&cts, 0, sizeof (cts));
xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1);
cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
cts.type = CTS_TYPE_CURRENT_SETTINGS;
cam_periph_lock(periph);
xpt_action((union ccb *)&cts);
cam_periph_unlock(periph);
if (cts.ccb_h.status != CAM_REQ_CMP) {
cam_periph_release(periph);
return;
}
if (cts.protocol == PROTO_SCSI && cts.transport == XPORT_FC) {
struct ccb_trans_settings_fc *fc = &cts.xport_specific.fc;
if (fc->valid & CTS_FC_VALID_WWPN) {
softc->wwpn = fc->wwpn;
SYSCTL_ADD_UQUAD(&softc->sysctl_ctx,
SYSCTL_CHILDREN(softc->sysctl_tree),
OID_AUTO, "wwpn", CTLFLAG_RD,
&softc->wwpn, "World Wide Port Name");
}
}
cam_periph_release(periph);
}
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 int
dadeletemethodsysctl(SYSCTL_HANDLER_ARGS)
{
char buf[16];
int error;
const char *p;
int i, value;
value = *(int *)arg1;
if (value < 0 || value > DA_DELETE_MAX)
p = "UNKNOWN";
else
p = da_delete_method_names[value];
strncpy(buf, p, sizeof(buf));
error = sysctl_handle_string(oidp, buf, sizeof(buf), req);
if (error != 0 || req->newptr == NULL)
return (error);
for (i = 0; i <= DA_DELETE_MAX; i++) {
if (strcmp(buf, da_delete_method_names[i]) != 0)
continue;
*(int *)arg1 = i;
return (0);
}
return (EINVAL);
}
static cam_status
daregister(struct cam_periph *periph, void *arg)
{
struct da_softc *softc;
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);
bioq_init(&softc->delete_queue);
bioq_init(&softc->delete_run_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;
softc->unmap_max_ranges = UNMAP_MAX_RANGES;
softc->unmap_max_lba = 1024*1024*2;
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 */
bzero(&cpi, sizeof(cpi));
xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
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);
/*
* Take an exclusive refcount on the periph while dastart is called
* to finish the probe. The reference will be dropped in dadone at
* the end of probe.
*/
(void)cam_periph_hold(periph, PRIBIO);
/*
* 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,
(DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
dasendorderedtag, softc);
mtx_unlock(periph->sim->mtx);
/*
* 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;
/* Predict whether device may support READ CAPACITY(16). */
if (SID_ANSI_REV(&cgd->inq_data) >= SCSI_REV_SPC3 ||
(SID_ANSI_REV(&cgd->inq_data) >= SCSI_REV_SPC &&
(cgd->inq_data.spc3_flags & SPC3_SID_PROTECT))) {
softc->flags |= DA_FLAG_CAN_RC16;
softc->state = DA_STATE_PROBE2;
}
/*
* Register this media as a disk.
*/
softc->disk = disk_alloc();
softc->disk->d_devstat = devstat_new_entry(periph->periph_name,
periph->unit_number, 0,
DEVSTAT_BS_UNAVAILABLE,
SID_TYPE(&cgd->inq_data) |
XPORT_DEVSTAT_TYPE(cpi.transport),
DEVSTAT_PRIORITY_DISK);
softc->disk->d_open = daopen;
softc->disk->d_close = daclose;
softc->disk->d_strategy = dastrategy;
softc->disk->d_dump = dadump;
softc->disk->d_getattr = dagetattr;
softc->disk->d_name = "da";
softc->disk->d_drv1 = periph;
if (cpi.maxio == 0)
softc->disk->d_maxsize = DFLTPHYS; /* traditional default */
else if (cpi.maxio > MAXPHYS)
softc->disk->d_maxsize = MAXPHYS; /* for safety */
else
softc->disk->d_maxsize = cpi.maxio;
softc->disk->d_unit = periph->unit_number;
softc->disk->d_flags = 0;
if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0)
softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
cam_strvis(softc->disk->d_descr, cgd->inq_data.vendor,
sizeof(cgd->inq_data.vendor), sizeof(softc->disk->d_descr));
strlcat(softc->disk->d_descr, " ", sizeof(softc->disk->d_descr));
cam_strvis(&softc->disk->d_descr[strlen(softc->disk->d_descr)],
cgd->inq_data.product, sizeof(cgd->inq_data.product),
sizeof(softc->disk->d_descr) - strlen(softc->disk->d_descr));
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;
disk_create(softc->disk, DISK_VERSION);
mtx_lock(periph->sim->mtx);
/*
* Add async callbacks for events of interest.
* 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_ADVINFO_CHANGED,
daasync, periph, periph->path);
/*
* Emit an attribute changed notification just in case
* physical path information arrived before our async
* event handler was registered, but after anyone attaching
* to our disk device polled it.
*/
disk_attr_changed(softc->disk, "GEOM::physpath", M_NOWAIT);
xpt_schedule(periph, CAM_PRIORITY_DEV);
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:
{
struct bio *bp, *bp1;
uint8_t tag_code;
/* Execute immediate CCB if waiting. */
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;
wakeup(&periph->ccb_list);
/* May have more work to do, so ensure we stay scheduled */
daschedule(periph);
break;
}
/* Run BIO_DELETE if not running yet. */
if (!softc->delete_running &&
(bp = bioq_first(&softc->delete_queue)) != NULL) {
uint64_t lba;
u_int count;
if (softc->delete_method == DA_DELETE_UNMAP) {
uint8_t *buf = softc->unmap_buf;
uint64_t lastlba = (uint64_t)-1;
uint32_t lastcount = 0;
int blocks = 0, off, ranges = 0;
softc->delete_running = 1;
bzero(softc->unmap_buf, sizeof(softc->unmap_buf));
bp1 = bp;
do {
bioq_remove(&softc->delete_queue, bp1);
if (bp1 != bp)
bioq_insert_tail(&softc->delete_run_queue, bp1);
lba = bp1->bio_pblkno;
count = bp1->bio_bcount / softc->params.secsize;
/* Try to extend the previous range. */
if (lba == lastlba) {
lastcount += count;
off = (ranges - 1) * 16 + 8;
scsi_ulto4b(lastcount, &buf[off + 8]);
} else if (count > 0) {
off = ranges * 16 + 8;
scsi_u64to8b(lba, &buf[off + 0]);
scsi_ulto4b(count, &buf[off + 8]);
lastcount = count;
ranges++;
}
blocks += count;
lastlba = lba + count;
bp1 = bioq_first(&softc->delete_queue);
if (bp1 == NULL ||
ranges >= softc->unmap_max_ranges ||
blocks + bp1->bio_bcount /
softc->params.secsize > softc->unmap_max_lba)
break;
} while (1);
scsi_ulto2b(count * 16 + 6, &buf[0]);
scsi_ulto2b(count * 16, &buf[2]);
scsi_unmap(&start_ccb->csio,
/*retries*/da_retry_count,
/*cbfcnp*/dadone,
/*tag_action*/MSG_SIMPLE_Q_TAG,
/*byte2*/0,
/*data_ptr*/ buf,
/*dxfer_len*/ count * 16 + 8,
/*sense_len*/SSD_FULL_SIZE,
da_default_timeout * 1000);
start_ccb->ccb_h.ccb_state = DA_CCB_DELETE;
goto out;
} else if (softc->delete_method == DA_DELETE_ZERO ||
softc->delete_method == DA_DELETE_WS10 ||
softc->delete_method == DA_DELETE_WS16) {
softc->delete_running = 1;
lba = bp->bio_pblkno;
count = 0;
bp1 = bp;
do {
bioq_remove(&softc->delete_queue, bp1);
if (bp1 != bp)
bioq_insert_tail(&softc->delete_run_queue, bp1);
count += bp1->bio_bcount / softc->params.secsize;
bp1 = bioq_first(&softc->delete_queue);
if (bp1 == NULL ||
lba + count != bp1->bio_pblkno ||
count + bp1->bio_bcount /
softc->params.secsize > 0xffff)
break;
} while (1);
scsi_write_same(&start_ccb->csio,
/*retries*/da_retry_count,
/*cbfcnp*/dadone,
/*tag_action*/MSG_SIMPLE_Q_TAG,
/*byte2*/softc->delete_method ==
DA_DELETE_ZERO ? 0 : SWS_UNMAP,
softc->delete_method ==
DA_DELETE_WS16 ? 16 : 10,
/*lba*/lba,
/*block_count*/count,
/*data_ptr*/ __DECONST(void *,
zero_region),
/*dxfer_len*/ softc->params.secsize,
/*sense_len*/SSD_FULL_SIZE,
da_default_timeout * 1000);
start_ccb->ccb_h.ccb_state = DA_CCB_DELETE;
goto out;
} else {
bioq_flush(&softc->delete_queue, NULL, 0);
/* FALLTHROUGH */
}
}
/* Run regular command. */
bp = bioq_takefirst(&softc->bio_queue);
if (bp == NULL) {
xpt_release_ccb(start_ccb);
break;
}
if ((bp->bio_flags & BIO_ORDERED) != 0 ||
(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;
}
switch (bp->bio_cmd) {
case BIO_READ:
case BIO_WRITE:
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,
da_default_timeout * 1000);
break;
case BIO_FLUSH:
/*
* BIO_FLUSH doesn't currently communicate
* range data, so we synchronize the cache
* over the whole disk. We also force
* ordered tag semantics the flush applies
* to all previously queued I/O.
*/
scsi_synchronize_cache(&start_ccb->csio,
/*retries*/1,
/*cbfcnp*/dadone,
MSG_ORDERED_Q_TAG,
/*begin_lba*/0,
/*lb_count*/0,
SSD_FULL_SIZE,
da_default_timeout*1000);
break;
}
start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
out:
/*
* Block out any asyncronous callbacks
* while we touch the pending ccb list.
*/
LIST_INSERT_HEAD(&softc->pending_ccbs,
&start_ccb->ccb_h, periph_links.le);
softc->outstanding_cmds++;
/* 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;
xpt_action(start_ccb);
/* May have more work to do, so ensure we stay scheduled */
daschedule(periph);
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_SCSIDA, M_NOWAIT|M_ZERO);
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_SCSIDA, M_NOWAIT|M_ZERO);
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;
struct bio *bp;
int frozen;
cdb = ccb->csio.cdb_io.cdb_bytes;
softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
if (ccb->ccb_h.ccb_state == DA_CCB_DELETE) {
if (softc->delete_method == DA_DELETE_UNMAP) {
xpt_print(ccb->ccb_h.path, "UNMAP is not supported, "
"switching to WRITE SAME(16) with UNMAP.\n");
softc->delete_method = DA_DELETE_WS16;
} else if (softc->delete_method == DA_DELETE_WS16) {
xpt_print(ccb->ccb_h.path,
"WRITE SAME(16) with UNMAP is not supported, "
"disabling BIO_DELETE.\n");
softc->delete_method = DA_DELETE_DISABLE;
} else if (softc->delete_method == DA_DELETE_WS10) {
xpt_print(ccb->ccb_h.path,
"WRITE SAME(10) with UNMAP is not supported, "
"disabling BIO_DELETE.\n");
softc->delete_method = DA_DELETE_DISABLE;
} else if (softc->delete_method == DA_DELETE_ZERO) {
xpt_print(ccb->ccb_h.path,
"WRITE SAME(10) is not supported, "
"disabling BIO_DELETE.\n");
softc->delete_method = DA_DELETE_DISABLE;
} else
softc->delete_method = DA_DELETE_DISABLE;
while ((bp = bioq_takefirst(&softc->delete_run_queue))
!= NULL)
bioq_disksort(&softc->delete_queue, bp);
bioq_insert_tail(&softc->delete_queue,
(struct bio *)ccb->ccb_h.ccb_bp);
ccb->ccb_h.ccb_bp = NULL;
return (0);
}
/* 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(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
"increasing minimum_cmd_size to 10.\n");
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;
u_int32_t priority;
softc = (struct da_softc *)periph->softc;
priority = done_ccb->ccb_h.pinfo.priority;
csio = &done_ccb->csio;
switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
case DA_CCB_BUFFER_IO:
case DA_CCB_DELETE:
{
struct bio *bp, *bp1;
bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
int error;
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;
}
bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
if (error != 0) {
int queued_error;
/*
* 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.
*/
queued_error = EIO;
if (error == ENXIO
&& (softc->flags & DA_FLAG_PACK_INVALID)== 0) {
/*
* Catastrophic error. Mark our pack as
* invalid.
*/
/*
* XXX See if this is really a media
* XXX change first?
*/
xpt_print(periph->path,
"Invalidating pack\n");
softc->flags |= DA_FLAG_PACK_INVALID;
queued_error = ENXIO;
}
bioq_flush(&softc->bio_queue, NULL,
queued_error);
if (bp != NULL) {
bp->bio_error = error;
bp->bio_resid = bp->bio_bcount;
bp->bio_flags |= BIO_ERROR;
}
} else if (bp != NULL) {
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 (bp != NULL) {
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;
if (softc->error_inject != 0) {
bp->bio_error = softc->error_inject;
bp->bio_resid = bp->bio_bcount;
bp->bio_flags |= BIO_ERROR;
softc->error_inject = 0;
}
}
/*
* Block out any asyncronous callbacks
* while we touch the pending ccb list.
*/
LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
softc->outstanding_cmds--;
if (softc->outstanding_cmds == 0)
softc->flags |= DA_FLAG_WENT_IDLE;
if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
xpt_print(periph->path, "oustanding %d\n",
softc->outstanding_cmds);
}
if ((csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) ==
DA_CCB_DELETE) {
while ((bp1 = bioq_takefirst(&softc->delete_run_queue))
!= NULL) {
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->delete_running = 0;
if (bp != NULL)
biodone(bp);
daschedule(periph);
} else if (bp != NULL)
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;
u_int lbppbe; /* LB per physical block exponent. */
u_int lalba; /* Lowest aligned LBA. */
if (softc->state == DA_STATE_PROBE) {
block_size = scsi_4btoul(rdcap->length);
maxsector = scsi_4btoul(rdcap->addr);
lbppbe = 0;
lalba = 0;
/*
* 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_SCSIDA);
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
}
} else {
block_size = scsi_4btoul(rcaplong->length);
maxsector = scsi_8btou64(rcaplong->addr);
lbppbe = rcaplong->prot_lbppbe & SRC16_LBPPBE;
lalba = scsi_2btoul(rcaplong->lalba_lbp);
}
/*
* Because GEOM code just will panic us if we
* give them an 'illegal' value we'll avoid that
* here.
*/
if (block_size == 0 && maxsector == 0) {
snprintf(announce_buf, sizeof(announce_buf),
"0MB (no media?)");
} else if (block_size >= MAXPHYS || block_size == 0) {
xpt_print(periph->path,
"unsupportable block size %ju\n",
(uintmax_t) block_size);
announce_buf[0] = '\0';
cam_periph_invalidate(periph);
} else {
dasetgeom(periph, block_size, maxsector,
lbppbe, lalba & SRC16_LALBA);
if ((lalba & SRC16_LBPME) &&
softc->delete_method == DA_DELETE_NONE)
softc->delete_method = DA_DELETE_UNMAP;
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,
CAM_PRIORITY_NORMAL);
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_len(sense,
csio->sense_len - csio->sense_resid,
&error_code, &sense_key, &asc,
&ascq, /*show_errors*/ 1);
}
/*
* If we tried READ CAPACITY(16) and failed,
* fallback to READ CAPACITY(10).
*/
if ((softc->state == DA_STATE_PROBE2) &&
(softc->flags & DA_FLAG_CAN_RC16) &&
(((csio->ccb_h.status & CAM_STATUS_MASK) ==
CAM_REQ_INVALID) ||
((have_sense) &&
(error_code == SSD_CURRENT_ERROR) &&
(sense_key == SSD_KEY_ILLEGAL_REQUEST)))) {
softc->flags &= ~DA_FLAG_CAN_RC16;
softc->state = DA_STATE_PROBE;
free(rdcap, M_SCSIDA);
xpt_release_ccb(done_ccb);
xpt_schedule(periph, priority);
return;
} else
/*
* 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(periph->path,
"got CAM status %#x\n",
done_ccb->ccb_h.status);
}
xpt_print(periph->path, "fatal error, "
"failed to attach to device\n");
/*
* Free up resources.
*/
cam_periph_invalidate(periph);
}
}
}
free(csio->data_ptr, M_SCSIDA);
if (announce_buf[0] != '\0') {
/*
* Create our sysctl variables, now that we know
* we have successfully attached.
*/
/* increase the refcount */
if (cam_periph_acquire(periph) == CAM_REQ_CMP) {
taskqueue_enqueue(taskqueue_thread,
&softc->sysctl_task);
xpt_announce_periph(periph, announce_buf);
} else {
xpt_print(periph->path, "fatal error, "
"could not acquire reference count\n");
}
}
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_unhold(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, CAM_PRIORITY_NORMAL);
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, rc16failed;
u_int32_t sense_flags;
u_int lbppbe; /* Logical blocks per physical block exponent. */
u_int lalba; /* Lowest aligned LBA. */
softc = (struct da_softc *)periph->softc;
block_len = 0;
maxsector = 0;
lbppbe = 0;
lalba = 0;
error = 0;
rc16failed = 0;
sense_flags = SF_RETRY_UA;
if (softc->flags & DA_FLAG_PACK_REMOVABLE)
sense_flags |= SF_NO_PRINT;
/* Do a read capacity */
rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcaplong),
M_SCSIDA,
M_NOWAIT | M_ZERO);
if (rcap == NULL)
return (ENOMEM);
rcaplong = (struct scsi_read_capacity_data_long *)rcap;
ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
/* Try READ CAPACITY(16) first if we think it should work. */
if (softc->flags & DA_FLAG_CAN_RC16) {
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,
softc->disk->d_devstat);
if (error == 0)
goto rc16ok;
/* If we got ILLEGAL REQUEST, do not prefer RC16 any more. */
if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
CAM_REQ_INVALID) {
softc->flags &= ~DA_FLAG_CAN_RC16;
} else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
CAM_SCSI_STATUS_ERROR) &&
(ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) &&
(ccb->ccb_h.status & CAM_AUTOSNS_VALID) &&
((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)
softc->flags &= ~DA_FLAG_CAN_RC16;
}
rc16failed = 1;
}
/* Do READ CAPACITY(10). */
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,
softc->disk->d_devstat);
if (error == 0) {
block_len = scsi_4btoul(rcap->length);
maxsector = scsi_4btoul(rcap->addr);
if (maxsector != 0xffffffff || rc16failed)
goto done;
} else
goto done;
/* If READ CAPACITY(10) returned overflow, use READ CAPACITY(16) */
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,
softc->disk->d_devstat);
if (error == 0) {
rc16ok:
block_len = scsi_4btoul(rcaplong->length);
maxsector = scsi_8btou64(rcaplong->addr);
lbppbe = rcaplong->prot_lbppbe & SRC16_LBPPBE;
lalba = scsi_2btoul(rcaplong->lalba_lbp);
}
done:
if (error == 0) {
if (block_len >= MAXPHYS || block_len == 0) {
xpt_print(periph->path,
"unsupportable block size %ju\n",
(uintmax_t) block_len);
error = EINVAL;
} else {
dasetgeom(periph, block_len, maxsector,
lbppbe, lalba & SRC16_LALBA);
if ((lalba & SRC16_LBPME) &&
softc->delete_method == DA_DELETE_NONE)
softc->delete_method = DA_DELETE_UNMAP;
}
}
xpt_release_ccb(ccb);
free(rcap, M_SCSIDA);
return (error);
}
static void
dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector,
u_int lbppbe, u_int lalba)
{
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;
if (lbppbe > 0) {
dp->stripesize = block_len << lbppbe;
dp->stripeoffset = (dp->stripesize - block_len * lalba) %
dp->stripesize;
} else if (softc->quirks & DA_Q_4K) {
dp->stripesize = 4096;
dp->stripeoffset = 0;
} else {
dp->stripesize = 0;
dp->stripeoffset = 0;
}
/*
* 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, CAM_PRIORITY_NORMAL);
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);
if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
/*
* We don't know what went wrong here- but just pick
* a geometry so we don't have nasty things like divide
* by zero.
*/
dp->heads = 255;
dp->secs_per_track = 255;
dp->cylinders = dp->sectors / (255 * 255);
if (dp->cylinders == 0) {
dp->cylinders = 1;
}
} else {
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 = arg;
if (da_send_ordered) {
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;
}
/* Queue us up again */
callout_reset(&softc->sendordered_c,
(DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
dasendorderedtag, softc);
}
/*
* 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;
cam_periph_lock(periph);
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)) {
cam_periph_unlock(periph);
continue;
}
xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
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(periph->path, "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);
cam_periph_unlock(periph);
}
}
#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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