337 lines
13 KiB
C
337 lines
13 KiB
C
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/*
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* Copyright (c) 1992 The Regents of the University of California.
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* All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratories.
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*
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* %sccs.include.redist.c%
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*
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* %W% (Berkeley) %G%
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*
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* from: Header: scsi.h,v 1.5 93/02/01 19:19:15 torek Exp (LBL)
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* $Id: scsi.h,v 1.1 1993/10/27 17:48:38 deraadt Exp $
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*/
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/*
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* Machine independent SCSI defintions.
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*/
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/*
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* Mostly-generic command descriptor blocks (6 and 10 bytes).
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* Note that no SCSI command uses the 12 byte variety, hence it
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* is not defined here.
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*/
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struct scsi_cdb6 {
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u_char cdb_cmd, /* command code */
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cdb_lun_lbah, /* logical unit number, & lba (MSB) */
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cdb_lbam, /* logical block address */
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cdb_lbal, /* logical block address (LSB) */
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cdb_len, /* transfer length */
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cdb_ctrl; /* control byte */
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};
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struct scsi_cdb10 {
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u_char cdb_cmd, /* command code */
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cdb_lun_rel, /* logical unit number, rsvd, & reladr flag */
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cdb_lbah, /* logical block address (MSB) */
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cdb_lbahm, /* logical block address (high middle byte) */
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cdb_lbalm, /* logical block address (low middle byte) */
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cdb_lbal, /* logical block address (LSB) */
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cdb_xxx, /* reserved */
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cdb_lenh, /* transfer length (MSB) */
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cdb_lenl, /* transfer length (LSB) */
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cdb_ctrl; /* control byte */
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};
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/*
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* SCSI `generic' cdb.
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* The length of the cdb is implicit in the first byte (see scsivar.h).
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* This is 16 bytes, rather than 10 or 12, just to help out alignment.
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*/
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struct scsi_cdb {
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u_char cdb_bytes[16]; /* up to 16 bytes of command */
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};
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#define CDB6(cdb) ((struct scsi_cdb6 *)&(cdb)->cdb_bytes[0])
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#define CDB10(cdb) ((struct scsi_cdb10 *)&(cdb)->cdb_bytes[0])
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/*
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* SCSI command (cdb_cmd/cdb_bytes[0]) byte definitions. Only those
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* that are common across all devices are actually defined here.
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* (The SCSI standard defines six groups of devices: direct access,
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* sequential access, printer, processor, WORM direct access, and
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* ROM direct access. DADs and SADs are basically `disk' and `tape';
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* printers and processors are obvious; and WORMs and ROMs are really
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* just disks that are missing one or two operations. A few commands
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* are required of all devices; these are defined here, and the others
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* are defined in separate headers.)
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*
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* Letter flags in parentheses in the comment column indicate:
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* M = mandatory (command is implemented on all SCSI devices)
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* E = extended (command implemented if SCSI device does extended SCSI)
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* O = optional
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* R = reserved to future SCSI standard
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* V = vendor unique
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* * = depends on device type
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*
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* Note that SCSI commands are broken into 8 `groups' given by bits 7..5.
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* Group 0 is 6-byte commands, 1 is 10-byte commands, and 5 is 12-byte
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* commands (of which none exist); groups 6 and 7 are vendor unique.
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* Commands are normally just treated as a simple 8-bit number,
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* but the size of the associated cdb is implied by the group.
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*/
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/* group 0 */
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#define CMD_TEST_UNIT_READY 0x00 /* (O) test unit ready */
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/* 0x01 (*) */
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/* 0x02 (V) */
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#define CMD_REQUEST_SENSE 0x03 /* (M) request sense */
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/* 0x04..0x05 (*) */
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/* 0x06 (V) */
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/* 0x07..0x08 (*) */
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/* 0x09 (V) */
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/* 0x0a..0x0b (*) */
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/* 0x0c..0x0e (V) */
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/* 0x0f..0x11 (*) */
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#define CMD_INQUIRY 0x12 /* (E) inquiry */
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/* 0x13..0x17 (*) */
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#define CMD_COPY 0x18 /* (O) copy */
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/* 0x19..0x1b (*) */
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#define CMD_RECEIVE_DIAG 0x1c /* (O) receive diagnostic results */
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#define CMD_SEND_DIAG 0x1d /* (O) send diagnostic */
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/* 0x1e (*) */
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/* 0x1f (R) */
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/* group 1 */
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/* 0x20..0x24 (V) */
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/* 0x25 (*) */
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/* 0x26..0x27 (V) */
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/* 0x28 (*) */
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/* 0x29 (V) */
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/* 0x2a..0x2b (*) */
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/* 0x2c..0x2d (V) */
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/* 0x2e..0x33 (*) */
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/* 0x34..0x37 (R) */
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#define CMD_COMPARE 0x38 /* (O) compare */
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#define CMD_COMPARE_VERIFY 0x39 /* (O) compare and verify */
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/* 0x3a..0x3f (R) */
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/* group 2 (40-5f) reserved */
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/* group 3 (60-7f) reserved */
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/* group 4 (80-9f) reserved */
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/* group 5 (a0-bf) reserved */
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/* group 6 (c0-df) vendor unique */
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/* group 7 (e0-ff) vendor unique */
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/*
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* SCSI control byte.
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* Bits 7 and 6 are vendor unique; bits 5, 4, 3, and 2 are reserved.
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* Bit 1 may be 1 only if bit 0 is 1; if so, it tells the target to
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* send a LINKED COMMAND COMPLETE (WITH FLAG) message. If not, but
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* bit 0 is set, this tells the target to send a LINKED COMMAND COMPLETE
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* message.
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*/
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#define CTRL_VU_MASK 0xc0 /* vendor unique */
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#define CTRL_RSVD 0x3c /* reserved, must be zero */
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#define CTRL_LCCF 0x02 /* send LCCF if sending LCC */
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#define CTRL_LINK 0x01 /* linked command */
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/*
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* Generic sense: regular and extended.
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* A sense operation returned an extended sense iff the error class
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* is 7. The format is vendor unique unless the error code is 0.
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* The regular and extended formats are completely different; we
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* define macros to obtain values from them.
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*/
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struct scsi_sense {
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u_char sn_vcc; /* valid bit, error class, & error code */
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u_char sn_var[7]; /* bytes 1-3, or 1-7; variant formats */
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u_char sn_addl[32-8]; /* additional sense data, if extended */
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};
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#define SENSE_ECLASS(sn) (((sn)->sn_vcc >> 4) & 7)
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#define SENSE_ECODE(sn) ((sn)->sn_vcc & 0xf)
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#define SENSE_ISXSENSE(sn) (SENSE_ECLASS(sn) == 7)
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/* for non-extended sense (`r'egular or `r'estricted sense) */
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#define RSENSE_LVALID(sn) ((sn)->sn_vcc & 0x80)
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#define RSENSE_VU(sn) ((sn)->sn_var[0] >> 5)
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#define RSENSE_LBA(sn) \
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((((sn)->sn_var[0] & 0x1f) << 16) | ((sn)->sn_var[1] << 8) | (sn)->sn_var[2])
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/* for extended sense */
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#define XSENSE_ISSTD(sn) (SENSE_ECODE(sn) == 0)
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/* if not standard, cannot interpret it at all */
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#define XSENSE_IVALID(sn) ((sn)->sn_vcc & 0x80)
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#define XSENSE_SEG(sn) ((sn)->sn_var[0])
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#define XSENSE_FM(sn) ((sn)->sn_var[1] & 0x80) /* filemark */
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#define XSENSE_EOM(sn) ((sn)->sn_var[1] & 0x40) /* end of media */
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#define XSENSE_ILI(sn) ((sn)->sn_var[1] & 0x20) /* incor length ind */
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#define XSENSE_KEY(sn) ((sn)->sn_var[1] & 0x0f) /* sense key */
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#define XSENSE_INFO(sn) \
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(((sn)->sn_var[2] << 24) | ((sn)->sn_var[3] << 16) | \
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((sn)->sn_var[4] << 8) | (sn)->sn_var[5])
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#define XSENSE_ADDL(sn) ((sn)->sn_var[6]) /* add'l sense len */
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/*
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* SCSI INQUIRY data: general, and ANSI versions 1 and 2
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* (including common command set).
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*/
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struct scsi_inquiry {
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u_char si_type; /* peripheral device type (below) */
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u_char si_qual; /* qualifier (see below) */
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u_char si_version; /* version (see below) */
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u_char si_v2info; /* scsi version 2 stuff (see below) */
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u_char si_len; /* additional length */
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u_char si_more[252-5]; /* actually si_len bytes */
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};
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struct scsi_inq_ansi {
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u_char si_type; /* peripheral qualifier and device type */
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u_char si_qual; /* RMB and device type qualifier */
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u_char si_version; /* ISO, ECMA and ANSI-approved versions */
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u_char si_v2info; /* ? */
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u_char si_len; /* addition length */
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char si_xxx1[2]; /* reserved */
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char si_flags; /* (see below) */
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char si_vendor[8]; /* vendor (blank padded) */
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char si_product[16]; /* product (blank padded) */
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char si_rev[4]; /* revision (blank padded) */
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/* scsi version 2 stuff follows */
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char si_vend1[20]; /* vendor specific */
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char si_xxx2[40]; /* reserved */
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char si_vend2[252-96]; /* vendor specific parameters */
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};
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/* peripheral device types */
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#define TYPE_QUAL_MASK 0xe0 /* peripheral qualifer mask */
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#define TYPE_TYPE_MASK 0x1f /* peripheral device type mask */
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#define TYPE_QUAL_NORM 0x00 /* device is normal */
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#define TYPE_QUAL_NOTCONN 0x20 /* not connected */
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#define TYPE_QUAL_XXX 0x40 /* reserved */
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#define TYPE_QUAL_NOLUN 0x60 /* logical unit not supported */
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#define TYPE_QUAL_VT4 0x80 /* vendor specific type 4 */
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#define TYPE_QUAL_VT5 0xa0 /* vendor specific type 5 */
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#define TYPE_QUAL_VT6 0xc0 /* vendor specific type 6 */
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#define TYPE_QUAL_VT7 0xe0 /* vendor specific type 7 */
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#define TYPE_DAD 0x00 /* direct access device (disk) */
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#define TYPE_SAD 0x01 /* sequential access device (tape) */
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#define TYPE_PRINTER 0x02 /* printer */
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#define TYPE_PROCESSOR 0x03 /* processor */
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#define TYPE_WORM 0x04 /* WORM disk */
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#define TYPE_ROM 0x05 /* CD-ROM disk */
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#define TYPE_SCANNER 0x06 /* scanner */
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#define TYPE_MO 0x07 /* magneto-optical */
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#define TYPE_JUKEBOX 0x08 /* medium changer */
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#define TYPE_LAN 0x09 /* communications device */
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#define TYPE_NP 0x1f /* unknown or no device */
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/* qualifiers */
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#define QUAL_RMB 0x80 /* removable medium bit */
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#define QUAL_MASK 0x7f /* mask for `user' bits */
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/* version (shifts and masks for subfields) */
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#define VER_ISO_SHIFT 6 /* ISO version: top 2 bits */
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#define VER_ISO_MASK 3
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#define VER_ECMA_SHIFT 3 /* ECMA version: middle 3 bits */
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#define VER_ECMA_MASK 7
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#define VER_ANSI_SHIFT 0 /* ANSI version: bottom 3 bits */
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#define VER_ANSI_MASK 7
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/* v2 info */
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#define V2INFO_AENC 0x80 /* device can accept AEN data */
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#define V2INFO_TRMIOP 0x40 /* supports TERMINATE I/O PROC msg */
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#define V2INFO_XXX 0x30 /* reserved */
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#define V2INFO_RDF_MASK 0x0f /* response data format mask */
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#define V2INFO_RDF_SCSI1 0x00 /* SCSI-1 standard INQUIRY data */
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#define V2INFO_RDF_CCS 0x01 /* common command set INQUIRY data */
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#define V2INFO_RDF_SCSI2 0x02 /* SCSI-2 standard INQUIRY data */
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/* flags */
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#define V2FLAG_RELADR 0x80 /* supports relative addressing */
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#define V2FLAG_WBUS32 0x40 /* supports 32 bit data xfer */
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#define V2FLAG_WBUS16 0x20 /* supports 32 bit data xfer */
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#define V2FLAG_SYNC 0x10 /* supports synchronous data xfer */
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#define V2FLAG_LINKED 0x08 /* supports linked commands */
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#define V2FLAG_XXX 0x04 /* reserved */
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#define V2FLAG_CMDQUE 0x02 /* supports tagged command queueing */
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#define V2FLAG_SOFTRESET 0x01 /* RST causes soft reset */
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/*
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* SCSI message codes bytes. The `command complete' code is required;
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* all others are optional. `Identify' is a flag bit, not a code (thus
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* codes are actually at most 7 bits).
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*/
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#define MSG_IDENTIFY 0x80 /* flag => this is an identify msg */
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#define MSG_IDENTIFY_DR 0x40 /* IDENTIFY: flag => discon/resel ok */
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#define MSG_IDENTIFY_RSVD 0x38 /* IDENTIFY: these bits are reserved */
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#define MSG_IDENTIFY_LUN 0x07 /* IDENTIFY: these bits give LUN */
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#define MSG_CMD_COMPLETE 0x00 /* command complete */
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#define MSG_EXT_MESSAGE 0x01 /* extended message */
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#define MSG_SAVE_DATA_PTR 0x02 /* save data pointer */
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#define MSG_RESTORE_PTR 0x03 /* restore pointers */
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#define MSG_DISCONNECT 0x04 /* disconnect */
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#define MSG_INIT_DETECT_ERROR 0x05 /* initiator detected error */
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#define MSG_ABORT 0x06 /* abort */
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#define MSG_REJECT 0x07 /* message reject */
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#define MSG_NOOP 0x08 /* no operation */
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#define MSG_PARITY_ERROR 0x09 /* message parity error */
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#define MSG_LCC 0x0a /* linked command complete */
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#define MSG_LCCF 0x0b /* linked command complete (w/ flag) */
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#define MSG_BUS_DEVICE_RESET 0x0c /* bus device reset */
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#define MSG_ABORT_TAG 0x0d /* abort tagged msg */
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#define MSG_CLEAR_QUEUE 0x0e /* clear queue */
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#define MSG_INITIATE_RECOVERY 0x0f /* initiate recovery */
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#define MSG_RELEASE_RECOVERY 0x10 /* release recovery */
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#define MSG_TERMINATE_PROCESS 0x11 /* ? */
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#define MSG_SIMPLE_Q_TAG 0x20 /* ? */
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#define MSG_HEAD_Q_TAG 0x21 /* ? */
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#define MSG_ORDERED_Q_TAG 0x22 /* ? */
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#define MSG_IGNORE_WIDE_RESID 0x23 /* ? */
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/*
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* SCSI extended message format.
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*/
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struct scsi_xmsg {
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u_char xm_xmsg, /* value 1, i.e., SMSG_EXT_MESSAGE */
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xm_len, /* length of this extended message */
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xm_code, /* actual code */
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xm_args[253]; /* actualy xm_len-1 bytes */
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};
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/*
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* SCSI extended message codes.
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*/
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#define XMSG_MDP 0x00 /* modify data pointer */
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#define XMSG_SDTR 0x01 /* synchronous data transfer request */
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#define XMSG_XID 0x02 /* extended identify */
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||
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||
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/*
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||
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* SCSI status byte values. Bits 6, 5, and 0 are Vendor Unique.
|
||
|
|
*/
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||
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|
#define STS_EXT 0x80 /* flag => extended status valid */
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||
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#define STS_MASK 0x1e /* mask for non-VU bits */
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||
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#define STS_VU 0x61 /* mask for Vendor Unique bits */
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||
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|
|
||
|
|
#define STS_GOOD 0x00 /* success, command done */
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||
|
|
#define STS_CHECKCOND 0x02 /* check condition (do a REQ SENSE) */
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||
|
|
#define STS_CONDMET 0x04 /* condition met (search succeeded) */
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||
|
|
/* 0x06 reserved */
|
||
|
|
#define STS_BUSY 0x08 /* busy */
|
||
|
|
/* 0x0a reserved */
|
||
|
|
/* 0x0c reserved */
|
||
|
|
/* 0x0e reserved */
|
||
|
|
#define STS_INTERMED 0x10 /* succeeded, doing linked cmd */
|
||
|
|
/* 0x12 reserved */
|
||
|
|
#define STS_INTERMED_CONDMET 0x14 /* condition met, doing linked cmd */
|
||
|
|
/* 0x16 reserved */
|
||
|
|
#define STS_RESERV_CONFLICT 0x18 /* reservation conflict */
|
||
|
|
/* 0x1a reserved */
|
||
|
|
/* 0x1c reserved */
|
||
|
|
/* 0x1e reserved */
|