353 lines
5.7 KiB
C
353 lines
5.7 KiB
C
/*
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* SCSI general interface description
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*
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* Largely written by Julian Elischer (julian@tfs.com)
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* for TRW Financial Systems.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* $Id: scsi_all.h,v 1.2 1993/05/20 03:46:26 cgd Exp $
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*/
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/*
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* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
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*/
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/*
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* SCSI command format
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*/
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struct scsi_generic
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{
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u_char opcode;
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u_char bytes[11];
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};
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struct scsi_test_unit_ready
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{
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u_char op_code;
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u_char :5;
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u_char lun:3;
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u_char unused[3];
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u_char link:1;
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u_char flag:4;
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u_char :3;
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};
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struct scsi_send_diag
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{
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u_char op_code;
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u_char uol:1;
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u_char dol:1;
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u_char selftest:1;
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u_char :1;
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u_char pf:1;
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u_char lun:3;
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u_char unused[1];
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u_char paramlen[2];
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u_char link:1;
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u_char flag:4;
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u_char :3;
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};
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struct scsi_sense
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{
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u_char op_code;
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u_char :5;
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u_char lun:3;
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u_char unused[2];
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u_char length;
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u_char link:1;
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u_char flag:1;
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u_char :6;
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};
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struct scsi_inquiry
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{
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u_char op_code;
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u_char :5;
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u_char lun:3;
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u_char unused[2];
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u_char length;
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u_char link:1;
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u_char flag:1;
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u_char :6;
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};
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struct scsi_mode_sense
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{
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u_char op_code;
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u_char :3;
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u_char dbd:1;
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u_char rsvd:1;
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u_char lun:3;
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u_char page_code:6;
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u_char page_ctrl:2;
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u_char unused;
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u_char length;
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u_char link:1;
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u_char flag:1;
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u_char :6;
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};
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struct scsi_mode_sense_big
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{
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u_char op_code;
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u_char :3;
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u_char dbd:1;
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u_char rsvd:1;
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u_char lun:3;
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u_char page_code:6;
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u_char page_ctrl:2;
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u_char unused[4];
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u_char length[2];
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u_char link:1;
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u_char flag:1;
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u_char :6;
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};
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struct scsi_mode_select
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{
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u_char op_code;
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u_char sp:1;
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u_char :3;
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u_char pf:1;
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u_char lun:3;
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u_char unused[2];
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u_char length;
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u_char link:1;
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u_char flag:1;
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u_char :6;
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};
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struct scsi_mode_select_big
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{
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u_char op_code;
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u_char sp:1;
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u_char :3;
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u_char pf:1;
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u_char lun:3;
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u_char unused[5];
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u_char length[2];
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u_char link:1;
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u_char flag:1;
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u_char :6;
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};
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struct scsi_reserve
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{
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u_char op_code;
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u_char :5;
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u_char lun:3;
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u_char unused[2];
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u_char length;
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u_char link:1;
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u_char flag:1;
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u_char :6;
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};
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struct scsi_release
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{
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u_char op_code;
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u_char :5;
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u_char lun:3;
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u_char unused[2];
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u_char length;
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u_char link:1;
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u_char flag:1;
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u_char :6;
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};
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struct scsi_prevent
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{
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u_char op_code;
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u_char :5;
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u_char lun:3;
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u_char unused[2];
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u_char prevent:1;
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u_char :7;
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u_char link:1;
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u_char flag:1;
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u_char :6;
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};
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#define PR_PREVENT 1
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#define PR_ALLOW 0
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/*
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* Opcodes
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*/
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#define TEST_UNIT_READY 0x00
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#define REQUEST_SENSE 0x03
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#define INQUIRY 0x12
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#define MODE_SELECT 0x15
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#define MODE_SENSE 0x1a
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#define START_STOP 0x1b
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#define RESERVE 0x16
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#define RELEASE 0x17
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#define PREVENT_ALLOW 0x1e
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#define POSITION_TO_ELEMENT 0x2b
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#define MODE_SENSE_BIG 0x54
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#define MODE_SELECT_BIG 0x55
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#define MOVE_MEDIUM 0xa5
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#define READ_ELEMENT_STATUS 0xb8
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/*
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* sense data format
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*/
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#define T_DIRECT 0
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#define T_SEQUENTIAL 1
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#define T_PRINTER 2
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#define T_PROCESSOR 3
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#define T_WORM 4
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#define T_READONLY 5
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#define T_SCANNER 6
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#define T_OPTICAL 7
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#define T_NODEVICE 0x1F
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#define T_CHANGER 8
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#define T_COMM 9
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#define T_REMOV 1
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#define T_FIXED 0
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struct scsi_inquiry_data
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{
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u_char device_type:5;
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u_char device_qualifier:3;
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u_char dev_qual2:7;
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u_char removable:1;
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u_char ansii_version:3;
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u_char :5;
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u_char response_format;
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u_char additional_length;
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u_char unused[2];
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u_char :3;
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u_char can_link:1;
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u_char can_sync:1;
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u_char :3;
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char vendor[8];
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char product[16];
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char revision[4];
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u_char extra[8];
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};
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struct scsi_sense_data
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{
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u_char error_code:4;
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u_char error_class:3;
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u_char valid:1;
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union
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{
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struct
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{
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u_char blockhi:5;
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u_char vendor:3;
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u_char blockmed;
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u_char blocklow;
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} unextended;
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struct
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{
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u_char segment;
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u_char sense_key:4;
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u_char :1;
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u_char ili:1;
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u_char eom:1;
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u_char filemark:1;
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u_char info[4];
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u_char extra_len;
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/* allocate enough room to hold new stuff
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u_char cmd_spec_info[4];
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u_char add_sense_code;
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u_char add_sense_code_qual;
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u_char fru;
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u_char sense_key_spec_1:7;
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u_char sksv:1;
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u_char sense_key_spec_2;
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u_char sense_key_spec_3;
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( by increasing 16 to 26 below) */
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u_char extra_bytes[26];
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} extended;
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}ext;
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};
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struct scsi_sense_data_new
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{
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u_char error_code:7;
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u_char valid:1;
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union
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{
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struct
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{
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u_char blockhi:5;
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u_char vendor:3;
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u_char blockmed;
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u_char blocklow;
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} unextended;
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struct
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{
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u_char segment;
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u_char sense_key:4;
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u_char :1;
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u_char ili:1;
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u_char eom:1;
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u_char filemark:1;
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u_char info[4];
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u_char extra_len;
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u_char cmd_spec_info[4];
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u_char add_sense_code;
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u_char add_sense_code_qual;
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u_char fru;
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u_char sense_key_spec_1:7;
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u_char sksv:1;
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u_char sense_key_spec_2;
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u_char sense_key_spec_3;
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u_char extra_bytes[16];
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} extended;
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}ext;
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};
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struct blk_desc
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{
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u_char density;
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u_char nblocks[3];
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u_char reserved;
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u_char blklen[3];
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};
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struct scsi_mode_header
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{
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u_char data_length; /* Sense data length */
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u_char medium_type;
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u_char dev_spec;
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u_char blk_desc_len;
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};
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struct scsi_mode_header_big
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{
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u_char data_length[2]; /* Sense data length */
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u_char medium_type;
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u_char dev_spec;
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u_char unused[2];
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u_char blk_desc_len[2];
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};
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/*
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* Status Byte
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*/
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#define SCSI_OK 0x00
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#define SCSI_CHECK 0x02
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#define SCSI_BUSY 0x08
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#define SCSI_INTERM 0x10
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