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more convenient to make scsi mode page headers separate.
[unix-history] / usr / src / sys / dev / scsi / disk.h
/*
* Copyright (c) 1992 The Regents of the University of California.
* All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratories.
*
* %sccs.include.redist.c%
*
* @(#)disk.h 5.4 (Berkeley) %G%
*
* from: $Header: disk.h,v 1.3 92/12/02 03:43:24 torek Exp $ (LBL)
*/
/*
* SCSI definitions for Direct Access Devices (disks).
* This includes WORMs and CD-ROMs (although a few commands, such as
* format or write, are nonsensical on some).
*
* Commands defined in common headers (scsi.h or disktape.h) appear here
* as comments.
*/
/* group 0 */
/* CMD_TEST_UNIT_READY 0x00 test unit ready */
#define CMD_REZERO 0x01 /* rezero unit */
/* CMD_REQUEST_SENSE 0x03 request sense */
#define CMD_FORMAT_UNIT 0x04 /* format unit (disk) */
#define CMD_REASSIGN_BLOCKS 0x07 /* reassign blocks (disk, WORM) */
#define CMD_READ6 0x08 /* read (6 byte cdb) */
#define CMD_WRITE6 0x0a /* write (6 byte cdb) */
#define CMD_SEEK6 0x0b /* seek (6 byte cdb) */
/* CMD_INQUIRY 0x12 inquiry */
/* CMD_MODE_SELECT 0x15 mode select */
#define CMD_RESERVE 0x16 /* reserve */
#define CMD_RELEASE 0x17 /* release */
/* CMD_COPY 0x18 copy */
/* CMD_MODE_SENSE 0x1a mode sense */
#define CMD_SSU 0x1b /* start/stop unit */
/* CMD_RECEIVE_DIAG 0x1c receive diagnostic results */
/* CMD_SEND_DIAG 0x1d send diagnostic */
#define CMD_PAMR 0x1e /* prevent/allow medium removal */
/* group 1 */
#define CMD_READ_CAPACITY 0x25 /* read capacity */
#define CMD_READ10 0x28 /* read (10 byte cdb) */
#define CMD_WRITE10 0x2a /* write (10 byte cdb) */
#define CMD_SEEK10 0x2b /* write (10 byte cdb) */
#define CMD_WRITE_VERIFY 0x2e /* write and verify */
#define CMD_VERIFY 0x2f /* verify */
#define CMD_SEARCH_H 0x30 /* search data high */
#define CMD_SEARCH_E 0x31 /* search data equal */
#define CMD_SEARCH_L 0x32 /* search data low */
#define CMD_SET_LIMITS 0x33 /* set limits */
/* CMD_COMPARE 0x39 compare */
#define CMD_COPY_VERIFY 0x3a /* copy and verify */
/* this one is in van's but not in my 17B documents */
#define CMD_READ_DEFECT_DATA 0x37 /* read defect data */ /* ??? */
/*
* Structure of a FORMAT UNIT command (i.e., the cdb):
* byte 0: opcode<8>
* byte 1: lun<3> format_data<1> complete_list<1> defect_list_format<3>
* byte 2: vendor unique
* byte 3: interleave (MSB)
* byte 4: interleave (LSB)
* byte 5: control
*/
struct scsi_cdb_fu {
u_char cdb_cmd; /* SCSI_CMD_FU */
u_char cdb_lun_etc; /* lun+FD+CL+DLF */
u_char cdb_vu; /* vendor unique */
u_char cdb_ilvh; /* interleave (MSB) */
u_char cdb_ilvl; /* interleave (LSB) */
u_char cdb_ctrl; /* control byte */
};
/*
* If format data are supplied, they give either additional (cl=0) or
* new (cl=1) defect list in one of the following formats.
* Formats 1, 2, and 3 are the same as 0; formats 6 and 7 are
* vendor unique and reserved, respectively. (The `backwards'
* in `backwards compatible'...)
*/
#define SCSI_DLF_BLOCK 0 /* dlf = blocks */
#define SCSI_DLF_BFI 4 /* dlf = bytes from index */
#define SCSI_DLF_PS 5 /* dlf = physical sectors */
/*
* Defect list header, block format (`defect block address').
*
* N.B.: this structure is also used for the Reassign Blocks command;
* there the `defect block address' becomes a `defect logical block address'.
*/
struct scsi_dlf_dba {
u_short dlf_xxx; /* reserved */
u_char dlf_lenh, /* defect list length (MSB) */
dlf_lenl; /* defect list length (LSB) */
struct scsi_dlf_dba_desc {
u_char dbah, /* defect block address (MSB) */
dbahm, /* defect block address */
dbalm, /* defect block address */
dbal; /* defect block address (LSB) */
} dlf_dba[1]; /* actually longer */
};
/*
* Defect list header, Bytes From Index format.
*/
struct scsi_dlf_bfi {
u_short dlf_xxx; /* reserved */
u_char dlf_lenh, /* defect list length (MSB) */
dlf_lenl; /* defect list length (LSB) */
struct scsi_dlf_bfi_desc {
u_char cylh, /* cylinder number of defect (MSB) */
cylm, /* cylinder number of defect */
cyll, /* cylinder number of defect (LSB) */
head, /* head number of defect */
bfih, /* defect bytes from index (MSB) */
bfihm, /* defect bytes from index */
bfilm, /* defect bytes from index */
bfil; /* defect bytes from index (LSB) */
} dlf_bfi[1]; /* actually longer */
};
/*
* Defect list header, Physical Sector format.
*/
struct scsi_dlf_ps {
u_short dlf_xxx; /* reserved */
u_char dlf_lenh, /* defect list length (MSB) */
dlf_lenl; /* defect list length (LSB) */
struct scsi_dlf_ps_desc {
u_char cylh, /* cylinder number of defect (MSB) */
cylm, /* cylinder number of defect */
cyll, /* cylinder number of defect (LSB) */
head, /* head number of defect */
dsnh, /* defect sector number (MSB) */
dsnhm, /* defect sector number */
dsnlm, /* defect sector number */
dsnl; /* defect sector number (LSB) */
} dlf_ps[1]; /* actually longer */
};
/*
* For MODE SENSE and MODE SELECT: Mode page codes for disks.
*/
/* 0x00 vendor specific */
#define SCSI_MS_PC_RWERRREC 0x01 /* r/w error recovery parameters */
/* SCSI_MS_PC_DR 0x02 disconnect/reconnect control */
#define SCSI_MS_PC_FMT 0x03 /* format parameters */
#define SCSI_MS_PC_RDGEOM 0x04 /* Rigid Disk geometry */
#define SCSI_MS_PC_FD 0x05 /* flexible disk page */
/* 0x06 reserved */
#define SCSI_MS_PC_VERRREC 0x07 /* verify error recovery page */
#define SCSI_MS_PC_CACHE 0x08 /* cache page */
/* SCSI_MS_PC_PDEV 0x09 peripheral device page */
/* SCSI_MS_PC_CTLMODE 0x0a control mode page */
#define SCSI_MS_PC_MTSUPP 0x0b /* medium types supported */
#define SCSI_MS_PC_NOTCH 0x0c /* notch page */
/* 0x0d..0x1f reserved */
/* 0x20..0x3e vendor specific */
/*
* Structure of a Read/Write Error Recovery mode page.
* N.B.: CDC Wren V, at least, does not include write retry & time limit.
*/
struct scsi_page_rwerrrec {
u_char rw_psc, /* saveable flag + code (0x01) */
rw_len, /* length (0x0a) */
rw_flags, /* flags, see below */
rw_read_retry, /* read retry count */
rw_corr_span, /* correction span */
rw_hd_off, /* head offset count */
rw_ds_off, /* data strobe offset count */
rw_xxx0, /* reserved */
rw_write_retry, /* write retry count */
rw_xxx1, /* reserved */
rw_rtlh, /* recovery time limit (MSB) */
rw_rtll; /* recovery time limit (LSB) */
};
/* rw_flags */
#define SCSI_RWE_AWRE 0x80 /* reallocate defective blocks on write */
#define SCSI_RWE_ARRE 0x40 /* reallocate defective blocks on read */
#define SCSI_RWE_TB 0x20 /* transfer unrecoverable block */
#define SCSI_RWE_RC 0x10 /* recovery may not cause delay: may lie */
#define SCSI_RWE_EER 0x08 /* use most expedient recovery, not best */
#define SCSI_RWE_PER 0x04 /* report recovered errors */
#define SCSI_RWE_DTE 0x02 /* stop after recovered error */
#define SCSI_RWE_DCR 0x01 /* use ECC for detection only */
/*
* Structure of a Format Device mode page.
*/
struct scsi_page_fmt {
u_char fmt_psc, /* saveable flag + code (0x03) */
fmt_len, /* length (0x16) */
fmt_tpzh, /* tracks per zone (MSB) */
fmt_tpzl, /* tracks per zone (LSB) */
fmt_aspzh, /* alternate sectors per zone (MSB) */
fmt_aspzl, /* alternate sectors per zone (LSB) */
fmt_atpzh, /* alternate tracks per zone (MSB) */
fmt_atpzl, /* alternate tracks per zone (LSB) */
fmt_atpvh, /* alternate tracks per volume (MSB) */
fmt_atpvl, /* alternate tracks per volume (LSB) */
fmt_spth, /* sectors per track (MSB) */
fmt_sptl, /* sectors per track (LSB) */
fmt_dbppsh, /* data bytes per physical sector (MSB) */
fmt_dbppsl, /* data bytes per physical sector (LSB) */
fmt_ilh, /* interleave (MSB) */
fmt_ill, /* interleave (LSB) */
fmt_tsfh, /* track skew factor (MSB) */
fmt_tsfl, /* track skew factor (LSB) */
fmt_csfh, /* cylinder skew factor (MSB) */
fmt_csfl, /* cylinder skew factor (LSB) */
fmt_flags, /* flags, see below */
fmt_xxx[3]; /* reserved */
};
/* fmt_flags. Note, HSEC|SSEC meaning varies all over the map! */
#define SCSI_FMT_HSEC 0x80 /* hard sector */
#define SCSI_FMT_SSEC 0x40 /* soft sector */
#define SCSI_FMT_RMB 0x20 /* removable media */
#define SCSI_FMT_SURF 0x10 /* format by surface (vs. by cylinder) */
/* 0x0f reserved */
/*
* Structure of a Rigid Disk Geometry mode page.
* N.B.: CDC Wren V, at least, does not include rpm.
*/
struct scsi_page_rdgeom {
u_char rd_psc, /* saveable flag + code (0x04) */
rd_len, /* length (0x16) */
rd_ncylh, /* number of cylinders (MSB) */
rd_ncylm, /* number of cylinders */
rd_ncyll, /* number of cylinders (LSB) */
rd_nheads, /* number of heads */
rd_wpcylh, /* start cyl for write precomp. (MSB) */
rd_wpcylm, /* start cyl for write precomp. */
rd_wpcyll, /* start cyl for write precomp. (LSB) */
rd_rwcylh, /* start cyl for reduced write current (MSB) */
rd_rwcylm, /* start cyl for reduced write current */
rd_rwcyll, /* start cyl for reduced write current (LSB) */
rd_steph, /* drive step rate (.1 us units) (MSB) */
rd_stepl, /* drive step rate (LSB) */
rd_lcylh, /* landing zone cylinder (MSB) */
rd_lcylm, /* landing zone cylinder */
rd_lcyll, /* landing zone cylinder (LSB) */
rd_rpl, /* spindle synch control, see below */
rd_roff, /* rotational offset (for rpl) */
rd_xxx1, /* reserved */
rd_rpmh, /* medium rotation rate (rpm) (MSB) */
rd_rpml, /* medium rotation rate (rpm) (LSB) */
rd_xxx2[2]; /* reserved */
};
/* values for rd_rpl. */
#define SCSI_RD_RPL_MASK 0x03 /* mask for RPL field */
#define SCSI_RD_RPL_NONE 0x00 /* sync disabled or not supported */
#define SCSI_RD_RPL_SLAVE 0x01 /* disk is a Slave */
#define SCSI_RD_RPL_MASTER 0x02 /* disk is a Master */
#define SCSI_RD_RPL_MCONTROL 0x03 /* disk is a Master Control */
/*
* Structure of a Verify Error Recovery mode page.
*/
struct scsi_page_verrrec {
u_char v_psc, /* saveable flag + code (0x07) */
v_len, /* length (0x0a) */
v_flags, /* flags, see below */
v_verify_retry, /* verify retry count */
v_corr_span, /* verify correction span */
v_xxx[5], /* reserved */
v_rtlh, /* verify recovery time limit (MSB) */
v_rtll; /* verify recovery time limit (LSB) */
};
#define SCSI_V_EER 0x08 /* use most expedient recovery, not best */
#define SCSI_V_PER 0x04 /* report recovered errors */
#define SCSI_V_DTE 0x02 /* stop after recovered error */
#define SCSI_V_DCR 0x01 /* use ECC for detection only */
/*
* Structure of a Caching mode page.
*/
struct scsi_page_cache {
u_char cache_psc, /* saveable flag + code (0x08) */
cache_len, /* length (0x0a) */
cache_flags, /* flags, see below */
cache_reten, /* cache retention priorities (rd + wr) */
cache_dptlh, /* disable prefetch transfer length (MSB) */
cache_dptll, /* disable prefetch transfer length (LSB) */
cache_minpfh, /* minimum prefetch (MSB) */
cache_minpfl, /* minimum prefetch (LSB) */
cache_maxpfh, /* maximum prefetch (MSB) */
cache_maxpfl, /* maximum prefetch (LSB) */
cache_mpch, /* maximum prefetch ceiling (MSB) */
cache_mpcl; /* maximum prefetch ceiling (LSB) */
};
#define SCSI_CACHE_WCE 0x04 /* write cache enable */
#define SCSI_CACHE_MF 0x02 /* if set, prefetch depends on xfer length */
#define SCSI_CACHE_RCD 0x01 /* read cache disable */
#define SCSI_CACHE_RDPOLICY(x) ((x) >> 4)
#define SCSI_CACHE_WRPOLICY(x) ((x) & 0xf)
#define SCSI_CACHE_DEFAULT 0 /* use target default */
#define SCSI_CACHE_KEEPPF 1 /* keep prefetch data over cmd data */
#define SCSI_CACHE_KEEPCMD 15 /* keep cmd data over prefetch data */
/*
* Structure of a Control Mode mode page.
*/
struct scsi_page_ctlmode {
u_char cm_psc, /* saveable flag + code (0x0a) */
cm_len, /* length (0x06) */
cm_rlec, /* report log-activity exception condition */
cm_qctl, /* queue control (below) */
cm_ecaaen, /* ECA and AEN flags (below) */
cm_xxx, /* reserved */
cm_aenholdh, /* AEN holdoff period (ms) (MSB) */
cm_aenholdl; /* AEN holdoff period (ms) (LSB) */
};
#define SCSI_CM_RLEC 0x01 /* RLEC flag occupies only low bit */
#define SCSI_CM_QMOD(x) ((x) >> 4) /* queue algorithm modifier */
#define SCSI_CM_QERR 0x02 /* abort cmd queue after error */
#define SCSI_CM_DQUE 0x01 /* disable tagged queueing */
#define SCSI_CM_ECA 0x80 /* enable Extended Contingent Alliance */
#define SCSI_CM_RAENP 0x04 /* target may do Async Err Notif after init */
#define SCSI_CM_UAAENP 0x02 /* target may do AEN for Unit Attention */
#define SCSI_CM_EAENP 0x01 /* target may do AEN for deferred errors */
/*
* Bits in cdb_lenl for a READ CAPACITY command,
* and structure returned as data.
*
* If PMI is off, the lba in the cdb must be 0.
*/
#define SCSI_CMD_RC_PMI 0x01 /* Partial Medium Indicator */
struct scsi_rc {
u_char rc_lbah; /* logical block address (MSB) */
u_char rc_lbahm; /* logical block address */
u_char rc_lbalm; /* logical block address */
u_char rc_lbal; /* logical block address (LSB) */
u_char rc_blh; /* block length (MSB) */
u_char rc_blhm; /* block length */
u_char rc_bllm; /* block length */
u_char rc_bll; /* block length (LSB) */
};
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.