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freebsd-nq/sys/cam/scsi/scsi_da.h
Kenneth D. Merry 130f4520cb Add the CAM Target Layer (CTL). 
CTL is a disk and processor device emulation subsystem originally written
for Copan Systems under Linux starting in 2003.  It has been shipping in
Copan (now SGI) products since 2005.

It was ported to FreeBSD in 2008, and thanks to an agreement between SGI
(who acquired Copan's assets in 2010) and Spectra Logic in 2010, CTL is
available under a BSD-style license.  The intent behind the agreement was
that Spectra would work to get CTL into the FreeBSD tree.

Some CTL features:

 - Disk and processor device emulation.
 - Tagged queueing
 - SCSI task attribute support (ordered, head of queue, simple tags)
 - SCSI implicit command ordering support.  (e.g. if a read follows a mode
   select, the read will be blocked until the mode select completes.)
 - Full task management support (abort, LUN reset, target reset, etc.)
 - Support for multiple ports
 - Support for multiple simultaneous initiators
 - Support for multiple simultaneous backing stores
 - Persistent reservation support
 - Mode sense/select support
 - Error injection support
 - High Availability support (1)
 - All I/O handled in-kernel, no userland context switch overhead.

(1) HA Support is just an API stub, and needs much more to be fully
    functional.

ctl.c:			The core of CTL.  Command handlers and processing,
			character driver, and HA support are here.

ctl.h:			Basic function declarations and data structures.

ctl_backend.c,
ctl_backend.h:		The basic CTL backend API.

ctl_backend_block.c,
ctl_backend_block.h:	The block and file backend.  This allows for using
			a disk or a file as the backing store for a LUN.
			Multiple threads are started to do I/O to the
			backing device, primarily because the VFS API
			requires that to get any concurrency.

ctl_backend_ramdisk.c:	A "fake" ramdisk backend.  It only allocates a
			small amount of memory to act as a source and sink
			for reads and writes from an initiator.  Therefore
			it cannot be used for any real data, but it can be
			used to test for throughput.  It can also be used
			to test initiators' support for extremely large LUNs.

ctl_cmd_table.c:	This is a table with all 256 possible SCSI opcodes,
			and command handler functions defined for supported
			opcodes.

ctl_debug.h:		Debugging support.

ctl_error.c,
ctl_error.h:		CTL-specific wrappers around the CAM sense building
			functions.

ctl_frontend.c,
ctl_frontend.h:		These files define the basic CTL frontend port API.

ctl_frontend_cam_sim.c:	This is a CTL frontend port that is also a CAM SIM.
			This frontend allows for using CTL without any
			target-capable hardware.  So any LUNs you create in
			CTL are visible in CAM via this port.

ctl_frontend_internal.c,
ctl_frontend_internal.h:
			This is a frontend port written for Copan to do
			some system-specific tasks that required sending
			commands into CTL from inside the kernel.  This
			isn't entirely relevant to FreeBSD in general,
			but can perhaps be repurposed.

ctl_ha.h:		This is a stubbed-out High Availability API.  Much
			more is needed for full HA support.  See the
			comments in the header and the description of what
			is needed in the README.ctl.txt file for more
			details.

ctl_io.h:		This defines most of the core CTL I/O structures.
			union ctl_io is conceptually very similar to CAM's
			union ccb.

ctl_ioctl.h:		This defines all ioctls available through the CTL
			character device, and the data structures needed
			for those ioctls.

ctl_mem_pool.c,
ctl_mem_pool.h:		Generic memory pool implementation used by the
			internal frontend.

ctl_private.h:		Private data structres (e.g. CTL softc) and
			function prototypes.  This also includes the SCSI
			vendor and product names used by CTL.

ctl_scsi_all.c,
ctl_scsi_all.h:		CTL wrappers around CAM sense printing functions.

ctl_ser_table.c:	Command serialization table.  This defines what
			happens when one type of command is followed by
			another type of command.

ctl_util.c,
ctl_util.h:		CTL utility functions, primarily designed to be
			used from userland.  See ctladm for the primary
			consumer of these functions.  These include CDB
			building functions.

scsi_ctl.c:		CAM target peripheral driver and CTL frontend port.
			This is the path into CTL for commands from
			target-capable hardware/SIMs.

README.ctl.txt:		CTL code features, roadmap, to-do list.

usr.sbin/Makefile:	Add ctladm.

ctladm/Makefile,
ctladm/ctladm.8,
ctladm/ctladm.c,
ctladm/ctladm.h,
ctladm/util.c:		ctladm(8) is the CTL management utility.
			It fills a role similar to camcontrol(8).
			It allow configuring LUNs, issuing commands,
			injecting errors and various other control
			functions.

usr.bin/Makefile:	Add ctlstat.

ctlstat/Makefile
ctlstat/ctlstat.8,
ctlstat/ctlstat.c:	ctlstat(8) fills a role similar to iostat(8).
			It reports I/O statistics for CTL.

sys/conf/files:		Add CTL files.

sys/conf/NOTES:		Add device ctl.

sys/cam/scsi_all.h:	To conform to more recent specs, the inquiry CDB
			length field is now 2 bytes long.

			Add several mode page definitions for CTL.

sys/cam/scsi_all.c:	Handle the new 2 byte inquiry length.

sys/dev/ciss/ciss.c,
sys/dev/ata/atapi-cam.c,
sys/cam/scsi/scsi_targ_bh.c,
scsi_target/scsi_cmds.c,
mlxcontrol/interface.c:	Update for 2 byte inquiry length field.

scsi_da.h:		Add versions of the format and rigid disk pages
			that are in a more reasonable format for CTL.

amd64/conf/GENERIC,
i386/conf/GENERIC,
ia64/conf/GENERIC,
sparc64/conf/GENERIC:	Add device ctl.

i386/conf/PAE:		The CTL frontend SIM at least does not compile
			cleanly on PAE.

Sponsored by:	Copan Systems, SGI and Spectra Logic
MFC after:	1 month
2012-01-12 00:34:33 +00:00

514 lines
15 KiB
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/*
* Structures and definitions for SCSI commands to Direct Access Devices
*/
/*-
* Some lines of this file come from a file of the name "scsi.h"
* distributed by OSF as part of mach2.5,
* so the following disclaimer has been kept.
*
* Copyright 1990 by Open Software Foundation,
* Grenoble, FRANCE
*
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies and
* that both the copyright notice and this permission notice appear in
* supporting documentation, and that the name of OSF or Open Software
* Foundation not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission.
*
* OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
* NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*-
* Largely written by Julian Elischer (julian@tfs.com)
* for TRW Financial Systems.
*
* TRW Financial Systems, in accordance with their agreement with Carnegie
* Mellon University, makes this software available to CMU to distribute
* or use in any manner that they see fit as long as this message is kept with
* the software. For this reason TFS also grants any other persons or
* organisations permission to use or modify this software.
*
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*
* $FreeBSD$
*/
#ifndef _SCSI_SCSI_DA_H
#define _SCSI_SCSI_DA_H 1
#include <sys/cdefs.h>
struct scsi_rezero_unit
{
u_int8_t opcode;
#define SRZU_LUN_MASK 0xE0
u_int8_t byte2;
u_int8_t reserved[3];
u_int8_t control;
};
/*
* NOTE: The lower three bits of byte2 of the format CDB are the same as
* the lower three bits of byte2 of the read defect data CDB, below.
*/
struct scsi_format_unit
{
u_int8_t opcode;
u_int8_t byte2;
#define FU_FORMAT_MASK SRDD10_DLIST_FORMAT_MASK
#define FU_BLOCK_FORMAT SRDD10_BLOCK_FORMAT
#define FU_BFI_FORMAT SRDD10_BYTES_FROM_INDEX_FORMAT
#define FU_PHYS_FORMAT SRDD10_PHYSICAL_SECTOR_FORMAT
#define FU_CMPLST 0x08
#define FU_FMT_DATA 0x10
u_int8_t vendor_specific;
u_int8_t interleave[2];
u_int8_t control;
};
struct scsi_reassign_blocks
{
u_int8_t opcode;
u_int8_t byte2;
u_int8_t unused[3];
u_int8_t control;
};
struct scsi_read_defect_data_10
{
u_int8_t opcode;
/*
* The most significant 3 bits are the LUN, the other 5 are
* reserved.
*/
#define SRDD10_LUN_MASK 0xE0
u_int8_t byte2;
#define SRDD10_GLIST 0x08
#define SRDD10_PLIST 0x10
#define SRDD10_DLIST_FORMAT_MASK 0x07
#define SRDD10_BLOCK_FORMAT 0x00
#define SRDD10_BYTES_FROM_INDEX_FORMAT 0x04
#define SRDD10_PHYSICAL_SECTOR_FORMAT 0x05
u_int8_t format;
u_int8_t reserved[4];
u_int8_t alloc_length[2];
u_int8_t control;
};
struct scsi_read_defect_data_12
{
u_int8_t opcode;
/*
* The most significant 3 bits are the LUN, the other 5 are
* reserved.
*/
#define SRDD12_LUN_MASK 0xE0
u_int8_t byte2;
#define SRDD12_GLIST 0x08
#define SRDD12_PLIST 0x10
#define SRDD12_DLIST_FORMAT_MASK 0x07
#define SRDD12_BLOCK_FORMAT 0x00
#define SRDD12_BYTES_FROM_INDEX_FORMAT 0x04
#define SRDD12_PHYSICAL_SECTOR_FORMAT 0x05
u_int8_t format;
u_int8_t reserved[4];
u_int8_t alloc_length[4];
u_int8_t control;
};
/*
* Opcodes
*/
#define REZERO_UNIT 0x01
#define FORMAT_UNIT 0x04
#define REASSIGN_BLOCKS 0x07
#define MODE_SELECT 0x15
#define MODE_SENSE 0x1a
#define READ_FORMAT_CAPACITIES 0x23
#define WRITE_AND_VERIFY 0x2e
#define VERIFY 0x2f
#define READ_DEFECT_DATA_10 0x37
#define READ_DEFECT_DATA_12 0xb7
struct format_defect_list_header
{
u_int8_t reserved;
u_int8_t byte2;
#define FU_DLH_VS 0x01
#define FU_DLH_IMMED 0x02
#define FU_DLH_DSP 0x04
#define FU_DLH_IP 0x08
#define FU_DLH_STPF 0x10
#define FU_DLH_DCRT 0x20
#define FU_DLH_DPRY 0x40
#define FU_DLH_FOV 0x80
u_int8_t defect_list_length[2];
};
struct format_ipat_descriptor
{
u_int8_t byte1;
#define FU_INIT_NO_HDR 0x00
#define FU_INIT_LBA_MSB 0x40
#define FU_INIT_LBA_EACH 0x80
#define FU_INIT_SI 0x20
u_int8_t pattern_type;
#define FU_INIT_PAT_DEFAULT 0x00
#define FU_INIT_PAT_REPEAT 0x01
u_int8_t pat_length[2];
};
struct scsi_read_format_capacities
{
uint8_t opcode; /* READ_FORMAT_CAPACITIES */
uint8_t byte2;
#define SRFC_LUN_MASK 0xE0
uint8_t reserved0[5];
uint8_t alloc_length[2];
uint8_t reserved1[3];
};
struct scsi_verify
{
uint8_t opcode; /* VERIFY */
uint8_t byte2;
#define SVFY_LUN_MASK 0xE0
#define SVFY_RELADR 0x01
#define SVFY_BYTECHK 0x02
#define SVFY_DPO 0x10
uint8_t addr[4]; /* LBA to begin verification at */
uint8_t reserved0[1];
uint8_t len[2]; /* number of blocks to verify */
uint8_t reserved1[3];
};
struct scsi_write_and_verify
{
uint8_t opcode; /* WRITE_AND_VERIFY */
uint8_t byte2;
#define SWVY_LUN_MASK 0xE0
#define SWVY_RELADR 0x01
#define SWVY_BYTECHK 0x02
#define SWVY_DPO 0x10
uint8_t addr[4]; /* LBA to begin verification at */
uint8_t reserved0[1];
uint8_t len[2]; /* number of blocks to write and verify */
uint8_t reserved1[3];
};
/*
* Replies to READ_FORMAT_CAPACITIES look like this:
*
* struct format_capacity_list_header
* struct format_capacity_descriptor[1..n]
*
* These are similar, but not totally identical to, the
* defect list used to format a rigid disk.
*
* The appropriate csio_decode() format string looks like this:
* "{} *i3 {Len} i1 {Blocks} i4 {} *b6 {Code} b2 {Blocklen} i3"
*
* If the capacity_list_length is greater than
* sizeof(struct format_capacity_descriptor), then there are
* additional format capacity descriptors available which
* denote which format(s) the drive can handle.
*
* (Source: USB Mass Storage UFI Specification)
*/
struct format_capacity_list_header {
uint8_t unused[3];
uint8_t capacity_list_length;
};
struct format_capacity_descriptor {
uint8_t nblocks[4]; /* total number of LBAs */
uint8_t byte4; /* only present in max/cur descriptor */
#define FCD_CODE_MASK 0x03 /* mask for code field above */
#define FCD_UNFORMATTED 0x01 /* unformatted media present,
* maximum capacity returned */
#define FCD_FORMATTED 0x02 /* formatted media present,
* current capacity returned */
#define FCD_NOMEDIA 0x03 /* no media present,
* maximum device capacity returned */
uint8_t block_length[3]; /* length of an LBA in bytes */
};
struct scsi_reassign_blocks_data
{
u_int8_t reserved[2];
u_int8_t length[2];
struct {
u_int8_t dlbaddr[4]; /* defect logical block address */
} defect_descriptor[1];
};
/*
* This is the list header for the READ DEFECT DATA(10) command above.
* It may be a bit wrong to append the 10 at the end of the data structure,
* since it's only 4 bytes but it does tie it to the 10 byte command.
*/
struct scsi_read_defect_data_hdr_10
{
u_int8_t reserved;
#define SRDDH10_GLIST 0x08
#define SRDDH10_PLIST 0x10
#define SRDDH10_DLIST_FORMAT_MASK 0x07
#define SRDDH10_BLOCK_FORMAT 0x00
#define SRDDH10_BYTES_FROM_INDEX_FORMAT 0x04
#define SRDDH10_PHYSICAL_SECTOR_FORMAT 0x05
u_int8_t format;
u_int8_t length[2];
};
struct scsi_defect_desc_block
{
u_int8_t address[4];
};
struct scsi_defect_desc_bytes_from_index
{
u_int8_t cylinder[3];
u_int8_t head;
u_int8_t bytes_from_index[4];
};
struct scsi_defect_desc_phys_sector
{
u_int8_t cylinder[3];
u_int8_t head;
u_int8_t sector[4];
};
struct scsi_read_defect_data_hdr_12
{
u_int8_t reserved;
#define SRDDH12_GLIST 0x08
#define SRDDH12_PLIST 0x10
#define SRDDH12_DLIST_FORMAT_MASK 0x07
#define SRDDH12_BLOCK_FORMAT 0x00
#define SRDDH12_BYTES_FROM_INDEX_FORMAT 0x04
#define SRDDH12_PHYSICAL_SECTOR_FORMAT 0x05
u_int8_t format;
u_int8_t length[4];
};
union disk_pages /* this is the structure copied from osf */
{
struct format_device_page {
u_int8_t pg_code; /* page code (should be 3) */
#define SMS_FORMAT_DEVICE_PAGE 0x03 /* only 6 bits valid */
u_int8_t pg_length; /* page length (should be 0x16) */
#define SMS_FORMAT_DEVICE_PLEN 0x16
u_int8_t trk_z_1; /* tracks per zone (MSB) */
u_int8_t trk_z_0; /* tracks per zone (LSB) */
u_int8_t alt_sec_1; /* alternate sectors per zone (MSB) */
u_int8_t alt_sec_0; /* alternate sectors per zone (LSB) */
u_int8_t alt_trk_z_1; /* alternate tracks per zone (MSB) */
u_int8_t alt_trk_z_0; /* alternate tracks per zone (LSB) */
u_int8_t alt_trk_v_1; /* alternate tracks per volume (MSB) */
u_int8_t alt_trk_v_0; /* alternate tracks per volume (LSB) */
u_int8_t ph_sec_t_1; /* physical sectors per track (MSB) */
u_int8_t ph_sec_t_0; /* physical sectors per track (LSB) */
u_int8_t bytes_s_1; /* bytes per sector (MSB) */
u_int8_t bytes_s_0; /* bytes per sector (LSB) */
u_int8_t interleave_1; /* interleave (MSB) */
u_int8_t interleave_0; /* interleave (LSB) */
u_int8_t trk_skew_1; /* track skew factor (MSB) */
u_int8_t trk_skew_0; /* track skew factor (LSB) */
u_int8_t cyl_skew_1; /* cylinder skew (MSB) */
u_int8_t cyl_skew_0; /* cylinder skew (LSB) */
u_int8_t flags; /* various */
#define DISK_FMT_SURF 0x10
#define DISK_FMT_RMB 0x20
#define DISK_FMT_HSEC 0x40
#define DISK_FMT_SSEC 0x80
u_int8_t reserved21;
u_int8_t reserved22;
u_int8_t reserved23;
} format_device;
struct rigid_geometry_page {
u_int8_t pg_code; /* page code (should be 4) */
#define SMS_RIGID_GEOMETRY_PAGE 0x04
u_int8_t pg_length; /* page length (should be 0x16) */
#define SMS_RIGID_GEOMETRY_PLEN 0x16
u_int8_t ncyl_2; /* number of cylinders (MSB) */
u_int8_t ncyl_1; /* number of cylinders */
u_int8_t ncyl_0; /* number of cylinders (LSB) */
u_int8_t nheads; /* number of heads */
u_int8_t st_cyl_wp_2; /* starting cyl., write precomp (MSB) */
u_int8_t st_cyl_wp_1; /* starting cyl., write precomp */
u_int8_t st_cyl_wp_0; /* starting cyl., write precomp (LSB) */
u_int8_t st_cyl_rwc_2; /* starting cyl., red. write cur (MSB)*/
u_int8_t st_cyl_rwc_1; /* starting cyl., red. write cur */
u_int8_t st_cyl_rwc_0; /* starting cyl., red. write cur (LSB)*/
u_int8_t driv_step_1; /* drive step rate (MSB) */
u_int8_t driv_step_0; /* drive step rate (LSB) */
u_int8_t land_zone_2; /* landing zone cylinder (MSB) */
u_int8_t land_zone_1; /* landing zone cylinder */
u_int8_t land_zone_0; /* landing zone cylinder (LSB) */
u_int8_t rpl; /* rotational position locking (2 bits) */
u_int8_t rot_offset; /* rotational offset */
u_int8_t reserved19;
u_int8_t medium_rot_rate_1; /* medium rotation rate (RPM) (MSB) */
u_int8_t medium_rot_rate_0; /* medium rotation rate (RPM) (LSB) */
u_int8_t reserved22;
u_int8_t reserved23;
} rigid_geometry;
struct flexible_disk_page {
u_int8_t pg_code; /* page code (should be 5) */
#define SMS_FLEXIBLE_GEOMETRY_PAGE 0x05
u_int8_t pg_length; /* page length (should be 0x1E) */
#define SMS_FLEXIBLE_GEOMETRY_PLEN 0x1E
u_int8_t xfr_rate_1; /* transfer rate (MSB) */
u_int8_t xfr_rate_0; /* transfer rate (LSB) */
u_int8_t nheads; /* number of heads */
u_int8_t sec_per_track; /* Sectors per track */
u_int8_t bytes_s_1; /* bytes per sector (MSB) */
u_int8_t bytes_s_0; /* bytes per sector (LSB) */
u_int8_t ncyl_1; /* number of cylinders (MSB) */
u_int8_t ncyl_0; /* number of cylinders (LSB) */
u_int8_t st_cyl_wp_1; /* starting cyl., write precomp (MSB) */
u_int8_t st_cyl_wp_0; /* starting cyl., write precomp (LSB) */
u_int8_t st_cyl_rwc_1; /* starting cyl., red. write cur (MSB)*/
u_int8_t st_cyl_rwc_0; /* starting cyl., red. write cur (LSB)*/
u_int8_t driv_step_1; /* drive step rate (MSB) */
u_int8_t driv_step_0; /* drive step rate (LSB) */
u_int8_t driv_step_pw; /* drive step pulse width */
u_int8_t head_stl_del_1;/* Head settle delay (MSB) */
u_int8_t head_stl_del_0;/* Head settle delay (LSB) */
u_int8_t motor_on_del; /* Motor on delay */
u_int8_t motor_off_del; /* Motor off delay */
u_int8_t trdy_ssn_mo; /* XXX ??? */
u_int8_t spc; /* XXX ??? */
u_int8_t write_comp; /* Write compensation */
u_int8_t head_load_del; /* Head load delay */
u_int8_t head_uload_del;/* Head un-load delay */
u_int8_t pin32_pin2;
u_int8_t pin4_pint1;
u_int8_t medium_rot_rate_1; /* medium rotation rate (RPM) (MSB) */
u_int8_t medium_rot_rate_0; /* medium rotation rate (RPM) (LSB) */
u_int8_t reserved30;
u_int8_t reserved31;
} flexible_disk;
};
/*
* XXX KDM
* Here for CTL compatibility, reconcile this.
*/
struct scsi_format_page {
uint8_t page_code;
uint8_t page_length;
uint8_t tracks_per_zone[2];
uint8_t alt_sectors_per_zone[2];
uint8_t alt_tracks_per_zone[2];
uint8_t alt_tracks_per_lun[2];
uint8_t sectors_per_track[2];
uint8_t bytes_per_sector[2];
uint8_t interleave[2];
uint8_t track_skew[2];
uint8_t cylinder_skew[2];
uint8_t flags;
#define SFP_SSEC 0x80
#define SFP_HSEC 0x40
#define SFP_RMB 0x20
#define SFP_SURF 0x10
uint8_t reserved[3];
};
/*
* XXX KDM
* Here for CTL compatibility, reconcile this.
*/
struct scsi_rigid_disk_page {
uint8_t page_code;
#define SMS_RIGID_DISK_PAGE 0x04
uint8_t page_length;
uint8_t cylinders[3];
uint8_t heads;
uint8_t start_write_precomp[3];
uint8_t start_reduced_current[3];
uint8_t step_rate[2];
uint8_t landing_zone_cylinder[3];
uint8_t rpl;
#define SRDP_RPL_DISABLED 0x00
#define SRDP_RPL_SLAVE 0x01
#define SRDP_RPL_MASTER 0x02
#define SRDP_RPL_MASTER_CONTROL 0x03
uint8_t rotational_offset;
uint8_t reserved1;
uint8_t rotation_rate[2];
uint8_t reserved2[2];
};
struct scsi_da_rw_recovery_page {
u_int8_t page_code;
#define SMS_RW_ERROR_RECOVERY_PAGE 0x01
u_int8_t page_length;
u_int8_t byte3;
#define SMS_RWER_AWRE 0x80
#define SMS_RWER_ARRE 0x40
#define SMS_RWER_TB 0x20
#define SMS_RWER_RC 0x10
#define SMS_RWER_EER 0x08
#define SMS_RWER_PER 0x04
#define SMS_RWER_DTE 0x02
#define SMS_RWER_DCR 0x01
u_int8_t read_retry_count;
u_int8_t correction_span;
u_int8_t head_offset_count;
u_int8_t data_strobe_offset_cnt;
u_int8_t reserved;
u_int8_t write_retry_count;
u_int8_t reserved2;
u_int8_t recovery_time_limit[2];
};
__BEGIN_DECLS
/*
* 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.
*/
#ifndef _KERNEL
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);
#endif /* !_KERNEL */
__END_DECLS
#endif /* _SCSI_SCSI_DA_H */
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