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GNU Mach 1.0
/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or [email protected]
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* File: scsi.h
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 9/90
*
* Definitions of the SCSI-1 Standard
*/
#ifndef _SCSI_SCSI_H_
#define _SCSI_SCSI_H_
#include <nscsi.h>
#include <scsi/scsi_endian.h>
/*
* Bus phases
*/
#define SCSI_IO 0x01 /* Input/Output */
#define SCSI_CD 0x02 /* Command/Data */
#define SCSI_MSG 0x04 /* Message */
#define SCSI_PHASE_MASK 0x07
#define SCSI_PHASE(x) ((x)&SCSI_PHASE_MASK)
#define SCSI_PHASE_DATAO 0x00 /* 0 */
#define SCSI_PHASE_DATAI SCSI_IO /* 1 */
#define SCSI_PHASE_CMD SCSI_CD /* 2 */
#define SCSI_PHASE_STATUS (SCSI_CD|SCSI_IO) /* 3 */
/* 4..5 ANSI reserved */
#define SCSI_PHASE_MSG_OUT (SCSI_MSG|SCSI_CD) /* 6 */
#define SCSI_PHASE_MSG_IN (SCSI_MSG|SCSI_CD|SCSI_IO) /* 7 */
/*
* Single byte messages
*
* originator: I-nitiator T-arget
* T-support: M-andatory O-ptional
*/
#define SCSI_COMMAND_COMPLETE 0x00 /* M T */
#define SCSI_EXTENDED_MESSAGE 0x01 /* IT */
#define SCSI_SAVE_DATA_POINTER 0x02 /* O T */
#define SCSI_RESTORE_POINTERS 0x03 /* O T */
#define SCSI_DISCONNECT 0x04 /* O T */
#define SCSI_I_DETECTED_ERROR 0x05 /* M I */
#define SCSI_ABORT 0x06 /* M I */
#define SCSI_MESSAGE_REJECT 0x07 /* M IT */
#define SCSI_NOP 0x08 /* M I */
#define SCSI_MSG_PARITY_ERROR 0x09 /* M I */
#define SCSI_LNKD_CMD_COMPLETE 0x0a /* O T */
#define SCSI_LNKD_CMD_COMPLETE_F 0x0b /* O T */
#define SCSI_BUS_DEVICE_RESET 0x0c /* M I */
/* 0x0d..0x11 scsi2 */
/* 0x12..0x1f reserved */
#define SCSI_IDENTIFY 0x80 /* IT */
# define SCSI_IFY_ENABLE_DISCONNECT 0x40 /* I */
# define SCSI_IFY_LUNTAR 0x20 /* IT */
# define SCSI_IFY_LUN_MASK 0x07 /* IT */
/* Message codes 0x30..0x7f are reserved */
/*
* Extended messages, codes and formats
*/
#define SCSI_MODIFY_DATA_PTR 0x00 /* T */
typedef struct {
unsigned char xtn_msg_tag; /* const 0x01 */
unsigned char xtn_msg_len; /* const 0x05 */
unsigned char xtn_msg_code; /* const 0x00 */
unsigned char xtn_msg_arg_1000; /* MSB, signed 2cmpl */
unsigned char xtn_msg_arg_0200;
unsigned char xtn_msg_arg_0030;
unsigned char xtn_msg_arg_0004; /* LSB */
} scsi_mod_ptr_t;
#define SCSI_SYNC_XFER_REQUEST 0x01 /* IT */
typedef struct {
unsigned char xtn_msg_tag; /* const 0x01 */
unsigned char xtn_msg_len; /* const 0x03 */
unsigned char xtn_msg_code; /* const 0x01 */
unsigned char xtn_msg_xfer_period; /* times 4nsecs */
unsigned char xtn_msg_xfer_offset; /* pending ack window */
#define SCSI_SYNCH_XFER_OFFANY 0xff /* T unlimited */
} scsi_synch_xfer_req_t;
#define SCSI_XTN_IDENTIFY 0x02 /* IT -2 */
typedef struct {
unsigned char xtn_msg_tag; /* const 0x01 */
unsigned char xtn_msg_len; /* const 0x02 */
unsigned char xtn_msg_code; /* const 0x02 */
unsigned char xtn_msg_sublun;
} scsi_xtn_identify_t;
/* 0x03..0x7f reserved */
#define SCSI_XTN_VENDOR_UQE 0x80 /* vendor unique bit */
typedef struct {
unsigned char xtn_msg_tag; /* const 0x01 */
unsigned char xtn_msg_len; /* args' len+1 (0-->256)*/
unsigned char xtn_msg_code; /* const 0x80..0xff */
unsigned char xtn_msg_args[1]; /* 0..255 bytes */
} scsi_xtn_vedor_unique_t;
/*
* Commands, generic structures
*/
/* SIX byte commands */
typedef struct {
unsigned char scsi_cmd_code; /* group(7..5) and command(4..1) */
#define SCSI_CODE_GROUP 0xe0
#define SCSI_CODE_CMD 0x1f
unsigned char scsi_cmd_lun_and_lba1; /* lun(7..5) and block# msb[20..16] */
#define SCSI_LUN_MASK 0xe0
#define SCSI_LBA_MASK 0x1f
#define SCSI_LUN_SHIFT 5
unsigned char scsi_cmd_lba2; /* block#[15.. 8] */
unsigned char scsi_cmd_lba3; /* block#[ 7.. 0] */
unsigned char scsi_cmd_xfer_len; /* if required */
unsigned char scsi_cmd_ctrl_byte; /* contains: */
#define SCSI_CTRL_VUQ 0xc0 /* vendor unique bits */
#define SCSI_CTRL_RESVD 0x3c /* reserved, mbz */
#define SCSI_CTRL_FLAG 0x02 /* send a complete_with_flag at end */
#define SCSI_CTRL_LINK 0x01 /* link this command with next */
} scsi_command_group_0;
/* TEN byte commands */
typedef struct {
unsigned char scsi_cmd_code; /* group(7..5) and command(4..1) */
unsigned char scsi_cmd_lun_and_relbit;/* lun(7..5) and RelAdr(0) */
#define SCSI_RELADR 0x01
unsigned char scsi_cmd_lba1; /* block#[31..24] */
unsigned char scsi_cmd_lba2; /* block#[23..16] */
unsigned char scsi_cmd_lba3; /* block#[15.. 8] */
unsigned char scsi_cmd_lba4; /* block#[ 7.. 0] */
unsigned char scsi_cmd_xxx; /* reserved, mbz */
unsigned char scsi_cmd_xfer_len_1; /* if required */
unsigned char scsi_cmd_xfer_len_2; /* if required */
unsigned char scsi_cmd_ctrl_byte; /* see above */
} scsi_command_group_1,
scsi_command_group_2;
/* TWELVE byte commands */
typedef struct {
unsigned char scsi_cmd_code; /* group(7..5) and command(4..1) */
unsigned char scsi_cmd_lun_and_relbit;/* lun(7..5) and RelAdr(0) */
unsigned char scsi_cmd_lba1; /* block#[31..24] */
unsigned char scsi_cmd_lba2; /* block#[23..16] */
unsigned char scsi_cmd_lba3; /* block#[15.. 8] */
unsigned char scsi_cmd_lba4; /* block#[ 7.. 0] */
unsigned char scsi_cmd_xfer_len_1; /* if required */
unsigned char scsi_cmd_xfer_len_2; /* if required */
unsigned char scsi_cmd_xfer_len_3; /* if required */
unsigned char scsi_cmd_xfer_len_4; /* if required */
unsigned char scsi_cmd_xxx1; /* reserved, mbz */
unsigned char scsi_cmd_ctrl_byte; /* see above */
} scsi_command_group_5;
/*
* Commands, codes and aliases
*/
/* GROUP 0 */
#define SCSI_CMD_TEST_UNIT_READY 0x00 /* O all 2M all */
#define scsi_cmd_test_unit_ready_t scsi_command_group_0
#define SCSI_CMD_REZERO_UNIT 0x01 /* O disk worm rom */
#define SCSI_CMD_REWIND 0x01 /* M tape */
#define scsi_cmd_rewind_t scsi_command_group_0
#define scsi_cmd_rezero_t scsi_command_group_0
# define SCSI_CMD_REW_IMMED 0x01
/* 0x02 vendor unique */
#define SCSI_CMD_REQUEST_SENSE 0x03 /* M all */
#define scsi_cmd_request_sense_t scsi_command_group_0
# define scsi_cmd_allocation_length scsi_cmd_xfer_len
#define SCSI_CMD_FORMAT_UNIT 0x04 /* M disk O prin */
#define scsi_cmd_format_t scsi_command_group_0
# define SCSI_CMD_FMT_FMTDATA 0x10
# define SCSI_CMD_FMT_CMPLIST 0x08
# define SCSI_CMD_FMT_LIST_TYPE 0x07
# define scsi_cmd_intleave1 scsi_cmd_lba3
# define scsi_cmd_intleave2 scsi_cmd_xfer_len
#define SCSI_CMD_READ_BLOCK_LIMITS 0x05 /* E tape */
#define scsi_cmd_block_limits_t scsi_command_group_0
/* 0x06 vendor unique */
#define SCSI_CMD_REASSIGN_BLOCKS 0x07 /* O disk worm */
#define scsi_cmd_reassign_blocks_t scsi_command_group_0
#define SCSI_CMD_READ 0x08 /* M disk tape O worm rom */
#define SCSI_CMD_RECEIVE 0x08 /* O proc */
#define SCSI_CMD_GET_MESSAGE 0x08 /* M comm */
#define scsi_cmd_read_t scsi_command_group_0
# define SCSI_CMD_TP_FIXED 0x01 /* tape */
# define scsi_cmd_tp_len1 scsi_cmd_lba2
# define scsi_cmd_tp_len2 scsi_cmd_lba3
# define scsi_cmd_tp_len3 scsi_cmd_xfer_len
/* largest addressable blockno */
#define SCSI_CMD_READ_MAX_LBA ((1 << 21) - 1)
/* 0x09 vendor unique */
#define SCSI_CMD_WRITE 0x0a /* M disk tape O worm */
#define SCSI_CMD_PRINT 0x0a /* M prin */
#define SCSI_CMD_SEND 0x0a /* M proc */
#define SCSI_CMD_SEND_MESSAGE 0x0a /* M comm */
#define scsi_cmd_write_t scsi_command_group_0
#define SCSI_CMD_SEEK 0x0b /* O disk worm rom */
#define SCSI_CMD_TRACK_SELECT 0x0b /* O tape */
#define SCSI_CMD_SLEW_AND_PRINT 0x0b /* O prin */
#define scsi_cmd_seek_t scsi_command_group_0
# define SCSI_CMD_SLW_CHANNEL 0x01
# define scsi_cmd_tp_trackno scsi_cmd_xfer_len
# define scsi_cmd_slew_value scsi_cmd_lba2
/* 0x0c..0x0e vendor unique */
#define SCSI_CMD_READ_REVERSE 0x0f /* O tape */
#define scsi_cmd_rev_read_t scsi_command_group_0
#define SCSI_CMD_WRITE_FILEMARKS 0x10 /* M tape */
#define SCSI_CMD_FLUSH_BUFFER 0x10 /* M prin */
#define scsi_cmd_write_fil_t scsi_command_group_0
#define SCSI_CMD_SPACE 0x11 /* O tape */
#define scsi_cmd_space_t scsi_command_group_0
# define SCSI_CMD_SP_BLOCKS 0x00
# define SCSI_CMD_SP_FIL 0x01
# define SCSI_CMD_SP_SEQ_FIL 0x02
# define SCSI_CMD_SP_EOT 0x03
#define SCSI_CMD_INQUIRY 0x12 /* E all (2M all) */
#define scsi_cmd_inquiry_t scsi_command_group_0
# define SCSI_CMD_INQ_EVPD 0x01 /* 2 */
# define scsi_cmd_page_code scsi_cmd_lba2 /* 2 */
#define SCSI_CMD_VERIFY_0 0x13 /* O tape */
#define scsi_cmd_verify_t scsi_command_group_0
# define SCSI_CMD_VFY_BYTCMP 0x02
#define SCSI_CMD_RECOVER_BUFFERED_DATA 0x14 /* O tape prin */
#define scsi_cmd_recover_buffer_t scsi_command_group_0
#define SCSI_CMD_MODE_SELECT 0x15 /* O disk tape prin worm rom */
# define SCSI_CMD_MSL_PF 0x10
# define SCSI_CMD_MSL_SP 0x01
#define scsi_cmd_mode_select_t scsi_command_group_0
#define SCSI_CMD_RESERVE 0x16 /* O disk tape prin worm rom */
#define scsi_cmd_reserve_t scsi_command_group_0
# define SCSI_CMD_RES_3RDPTY 0x10
# define SCSI_CMD_RES_3RDPTY_DEV 0x0e
# define SCSI_CMD_RES_EXTENT 0x01
# define scsi_cmd_reserve_id scsi_cmd_lba2
# define scsi_cmd_extent_llen1 scsi_cmd_lba3
# define scsi_cmd_extent_llen2 scsi_cmd_xfer_len
#define SCSI_CMD_RELEASE 0x17 /* O disk tape prin worm rom */
#define scsi_cmd_release_t scsi_command_group_0
#define SCSI_CMD_COPY 0x18 /* O all */
#define scsi_cmd_copy_t scsi_command_group_0
# define SCSI_CMD_CPY_PAD 0x01 /* 2 */
# define scsi_cmd_paraml_len0 scsi_cmd_lba2
# define scsi_cmd_paraml_len1 scsi_cmd_lba3
# define scsi_cmd_paraml_len2 scsi_cmd_xfer_len
#define SCSI_CMD_ERASE 0x19 /* O tape */
#define scsi_cmd_erase_t scsi_command_group_0
# define SCSI_CMD_ER_LONG 0x01
#define SCSI_CMD_MODE_SENSE 0x1a /* O disk tape prin worm rom */
#define scsi_cmd_mode_sense_t scsi_command_group_0
# define scsi_cmd_ms_pagecode scsi_cmd_lba2
#define SCSI_CMD_START_STOP_UNIT 0x1b /* O disk prin worm rom */
#define SCSI_CMD_LOAD_UNLOAD 0x1b /* O tape */
#define scsi_cmd_start_t scsi_command_group_0
# define SCSI_CMD_SS_IMMED 0x01
# define scsi_cmd_ss_flags scsi_cmd_xfer_len
# define SCSI_CMD_SS_START 0x01
# define SCSI_CMD_SS_RETEN 0x02
# define SCSI_CMD_SS_RETAIN 0x01
# define SCSI_CMD_SS_EJECT 0x02
#define SCSI_CMD_RECEIVE_DIAG_RESULTS 0x1c /* O all */
#define scsi_cmd_receive_diag_t scsi_command_group_0
# define scsi_cmd_allocation_length1 scsi_cmd_lba3
# define scsi_cmd_allocation_length2 scsi_cmd_xfer_len
#define SCSI_CMD_SEND_DIAGNOSTICS 0x1d /* O all */
#define scsi_cmd_send_diag_t scsi_command_group_0
# define SCSI_CMD_DIAG_SELFTEST 0x04
# define SCSI_CMD_DIAG_DEVOFFL 0x02
# define SCSI_CMD_DIAG_UNITOFFL 0x01
#define SCSI_CMD_PREVENT_ALLOW_REMOVAL 0x1e /* O disk tape worm rom */
#define scsi_cmd_medium_removal_t scsi_command_group_0
# define scsi_cmd_pa_prevent scsi_cmd_xfer_len /* 0x1 */
/* 0x1f reserved */
/* GROUP 1 */
/* 0x20..0x24 vendor unique */
#define SCSI_CMD_READ_CAPACITY 0x25 /* E disk worm rom */
#define scsi_cmd_read_capacity_t scsi_command_group_1
# define scsi_cmd_rcap_flags scsi_cmd_xfer_len_2
# define SCSI_CMD_RCAP_PMI 0x01
/* 0x26..0x27 vendor unique */
#define SCSI_CMD_LONG_READ 0x28 /* E disk M worm rom */
#define scsi_cmd_long_read_t scsi_command_group_1
/* 0x29 vendor unique */
#define SCSI_CMD_LONG_WRITE 0x2a /* E disk M worm */
#define scsi_cmd_long_write_t scsi_command_group_1
#define SCSI_CMD_LONG_SEEK 0x2b /* O disk worm rom */
#define scsi_cmd_long_seek_t scsi_command_group_1
/* 0x2c..0x2d vendor unique */
#define SCSI_CMD_WRITE_AND_VERIFY 0x2e /* O disk worm */
#define scsi_cmd_write_vfy_t scsi_command_group_1
# define SCSI_CMD_VFY_BYTCHK 0x02
#define SCSI_CMD_VERIFY_1 0x2f /* O disk worm rom */
#define scsi_cmd_verify_long_t scsi_command_group_1
# define SCSI_CMD_VFY_BLKVFY 0x04
#define SCSI_CMD_SEARCH_HIGH 0x30 /* O disk worm rom */
#define scsi_cmd_search_t scsi_command_group_1
# define SCSI_CMD_SRCH_INVERT 0x10
# define SCSI_CMD_SRCH_SPNDAT 0x02
#define SCSI_CMD_SEARCH_EQUAL 0x31 /* O disk worm rom */
#define SCSI_CMD_SEARCH_LOW 0x32 /* O disk worm rom */
#define SCSI_CMD_SET_LIMITS 0x33 /* O disk worm rom */
#define scsi_cmd_set_limits_t scsi_command_group_1
# define SCSI_CMD_SL_RDINH 0x02
# define SCSI_CMD_SL_WRINH 0x01
/* 0x34..0x38 reserved */
#define SCSI_CMD_COMPARE 0x39 /* O all */
#define scsi_cmd_compare_t scsi_command_group_1
# define scsi_cmd_1_paraml1 scsi_cmd_lba2
# define scsi_cmd_1_paraml2 scsi_cmd_lba3
# define scsi_cmd_1_paraml3 scsi_cmd_lba4
#define SCSI_CMD_COPY_AND_VERIFY 0x3a /* O all */
#define scsi_cmd_copy_vfy_t scsi_command_group_1
# define SCSI_CMD_CPY_BYTCHK 0x02
/* 0x3b..0x3f reserved */
/* GROUP 2 */
/* 0x40..0x5f reserved */
/* GROUP 3 */
/* 0x60..0x7f reserved */
/* GROUP 4 */
/* 0x80..0x9f reserved */
/* GROUP 5 */
/* 0xa0..0xaf vendor unique */
/* 0xb0..0xbf reserved */
/* GROUP 6 */
/* 0xc0..0xdf vendor unique */
/* GROUP 7 */
/* 0xe0..0xff vendor unique */
/*
* Command-specific results and definitions
*/
/* inquiry data */
typedef struct {
unsigned char periph_type;
#define SCSI_DISK 0x00
#define SCSI_TAPE 0x01
#define SCSI_PRINTER 0x02
#define SCSI_CPU 0x03
#define SCSI_WORM 0x04
#define SCSI_CDROM 0x05
BITFIELD_2( unsigned char,
device_type : 7,
rmb : 1);
BITFIELD_3( unsigned char,
ansi : 3,
ecma : 3,
iso : 2);
unsigned char reserved;
unsigned char length;
unsigned char param[1];
} scsi_inquiry_data_t;
#define SCSI_INQ_STD_DATA -1
/* request sense data */
#define SCSI_SNS_NOSENSE 0x0
#define SCSI_SNS_RECOVERED 0x1
#define SCSI_SNS_NOTREADY 0x2
#define SCSI_SNS_MEDIUM_ERR 0x3
#define SCSI_SNS_HW_ERR 0x4
#define SCSI_SNS_ILLEGAL_REQ 0x5
#define SCSI_SNS_UNIT_ATN 0x6
#define SCSI_SNS_PROTECT 0x7
#define SCSI_SNS_BLANK_CHK 0x8
#define SCSI_SNS_VUQE 0x9
#define SCSI_SNS_COPY_ABRT 0xa
#define SCSI_SNS_ABORTED 0xb
#define SCSI_SNS_EQUAL 0xc
#define SCSI_SNS_VOLUME_OVFL 0xd
#define SCSI_SNS_MISCOMPARE 0xe
#define SCSI_SNS_RESERVED 0xf
typedef struct {
BITFIELD_3( unsigned char,
error_code : 4,
error_class : 3,
addr_valid : 1);
# define SCSI_SNS_XTENDED_SENSE_DATA 0x7 /* e.g. error_class=7 */
union {
struct {
BITFIELD_2(unsigned char,
lba_msb : 5,
vuqe : 3);
unsigned char lba;
unsigned char lba_lsb;
} non_xtnded;
struct {
unsigned char segment_number;
BITFIELD_5(unsigned char,
sense_key : 4,
res : 1,
ili : 1,
eom : 1,
fm : 1);
unsigned char info0;
unsigned char info1;
unsigned char info2;
unsigned char info3;
unsigned char add_len;
unsigned char add_bytes[1];/* VARSIZE */
} xtended;
} u;
} scsi_sense_data_t;
/* mode select params */
typedef struct {
unsigned char reserved1;
unsigned char medium_type;
BITFIELD_3(unsigned char,
speed:4, /* special for tapes, reserved in SCSI-1 */
buffer_mode:3,
reserved2:1);
unsigned char desc_len;
struct scsi_mode_parm_blockdesc {
unsigned char density_code;
unsigned char nblocks1;
unsigned char nblocks2;
unsigned char nblocks3;
unsigned char reserved;
unsigned char reclen1;
unsigned char reclen2;
unsigned char reclen3;
} descs[1]; /* VARSIZE, really */
} scsi_mode_select_param_t;
/* mode sense data (TAPE) */
typedef struct {
unsigned char data_len;
unsigned char medium_type;
BITFIELD_3(unsigned char,
speed : 4,
buffered_mode : 3,
wp : 1);
unsigned char bdesc_len;
struct {
unsigned char density_code;
unsigned char no_blks_msb;
unsigned char no_blks;
unsigned char no_blks_lsb;
unsigned char reserved;
unsigned char blen_msb;
unsigned char blen;
unsigned char blen_lsb;
} bdesc[1]; /* VARSIZE */
/* vuqe data might follow */
} scsi_mode_sense_data_t;
/* read capacity data */
typedef struct {
unsigned char lba1;
unsigned char lba2;
unsigned char lba3;
unsigned char lba4;
unsigned char blen1;
unsigned char blen2;
unsigned char blen3;
unsigned char blen4;
} scsi_rcap_data_t;
/* defect list(s) */
typedef struct {
unsigned char res1;
unsigned char res2;
unsigned char list_len_msb;
unsigned char list_len_lsb;
struct {
unsigned char blockno_msb;
unsigned char blockno_sb1;
unsigned char blockno_sb2;
unsigned char blockno_lsb;
} defects[1]; /* VARSIZE */
} scsi_Ldefect_data_t;
/* block limits (tape) */
typedef struct {
unsigned char res1;
unsigned char maxlen_msb;
unsigned char maxlen_sb;
unsigned char maxlen_lsb;
unsigned char minlen_msb;
unsigned char minlen_lsb;
} scsi_blimits_data_t;
/*
* Status byte (a-la scsi1)
*/
typedef union {
struct {
BITFIELD_4( unsigned char,
scsi_status_vendor_uqe1:1,
scsi_status_code:4,
scsi_status_vendor_uqe:2,
scsi_status_reserved:1);
# define SCSI_ST_GOOD 0x00 /* scsi_status_code values */
# define SCSI_ST_CHECK_CONDITION 0x01
# define SCSI_ST_CONDITION_MET 0x02
# define SCSI_ST_BUSY 0x04
# define SCSI_ST_INT_GOOD 0x08
# define SCSI_ST_INT_MET 0x0a
# define SCSI_ST_RES_CONFLICT 0x0c
/* anything else is reserved */
} st;
unsigned char bits;
} scsi_status_byte_t;
#endif _SCSI_SCSI_H_
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