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scsi_disk.h revision 1.11.2.3 
      1 /*	$NetBSD: scsi_disk.h,v 1.11.2.3 1997/10/14 10:25:06 thorpej Exp $	*/
      2 
      3 /*
      4  * SCSI-specific interface description
      5  */
      6 
      7 /*
      8  * Some lines of this file come from a file of the name "scsi.h"
      9  * distributed by OSF as part of mach2.5,
     10  *  so the following disclaimer has been kept.
     11  *
     12  * Copyright 1990 by Open Software Foundation,
     13  * Grenoble, FRANCE
     14  *
     15  * 		All Rights Reserved
     16  *
     17  *   Permission to use, copy, modify, and distribute this software and
     18  * its documentation for any purpose and without fee is hereby granted,
     19  * provided that the above copyright notice appears in all copies and
     20  * that both the copyright notice and this permission notice appear in
     21  * supporting documentation, and that the name of OSF or Open Software
     22  * Foundation not be used in advertising or publicity pertaining to
     23  * distribution of the software without specific, written prior
     24  * permission.
     25  *
     26  *   OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
     27  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
     28  * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
     29  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
     30  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
     31  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
     32  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     33  */
     34 
     35 /*
     36  * Largely written by Julian Elischer (julian (at) tfs.com)
     37  * for TRW Financial Systems.
     38  *
     39  * TRW Financial Systems, in accordance with their agreement with Carnegie
     40  * Mellon University, makes this software available to CMU to distribute
     41  * or use in any manner that they see fit as long as this message is kept with
     42  * the software. For this reason TFS also grants any other persons or
     43  * organisations permission to use or modify this software.
     44  *
     45  * TFS supplies this software to be publicly redistributed
     46  * on the understanding that TFS is not responsible for the correct
     47  * functioning of this software in any circumstances.
     48  *
     49  * Ported to run under 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992
     50  */
     51 
     52 /*
     53  * SCSI command format
     54  */
     55 
     56 #ifndef	_SCSI_SCSI_DISK_H
     57 #define _SCSI_SCSI_DISK_H 1
     58 
     59 /*
     60  * XXX for now this isn't in the ATAPI specs, but if there are on day
     61  * ATAPI hard disks, it is likely that they implement this command (or a
     62  * command like this ?
     63  */
     64 #define	SCSI_REASSIGN_BLOCKS		0x07
     65 struct scsi_reassign_blocks {
     66 	u_int8_t opcode;
     67 	u_int8_t byte2;
     68 	u_int8_t unused[3];
     69 	u_int8_t control;
     70 };
     71 
     72 /*
     73  * XXX Is this also used by ATAPI?
     74  */
     75 #define	SCSI_REZERO_UNIT		0x01
     76 struct scsi_rezero_unit {
     77 	u_int8_t opcode;
     78 	u_int8_t byte2;
     79 	u_int8_t reserved[3];
     80 	u_int8_t control;
     81 };
     82 
     83 #define	SCSI_READ_COMMAND		0x08
     84 #define SCSI_WRITE_COMMAND		0x0a
     85 struct scsi_rw {
     86 	u_int8_t opcode;
     87 	u_int8_t addr[3];
     88 #define	SRW_TOPADDR	0x1F	/* only 5 bits here */
     89 	u_int8_t length;
     90 	u_int8_t control;
     91 };
     92 
     93 /* DATAs definitions for the above commands */
     94 
     95 struct scsi_reassign_blocks_data {
     96 	u_int8_t reserved[2];
     97 	u_int8_t length[2];
     98 	struct {
     99 		u_int8_t dlbaddr[4];
    100 	} defect_descriptor[1];
    101 };
    102 
    103 union scsi_disk_pages {
    104 #define	DISK_PGCODE	0x3F	/* only 6 bits valid */
    105 	struct page_disk_format {
    106 		u_int8_t pg_code;	/* page code (should be 3) */
    107 		u_int8_t pg_length;	/* page length (should be 0x16) */
    108 		u_int8_t trk_z[2];	/* tracks per zone */
    109 		u_int8_t alt_sec[2];	/* alternate sectors per zone */
    110 		u_int8_t alt_trk_z[2];	/* alternate tracks per zone */
    111 		u_int8_t alt_trk_v[2];	/* alternate tracks per volume */
    112 		u_int8_t ph_sec_t[2];	/* physical sectors per track */
    113 		u_int8_t bytes_s[2];	/* bytes per sector */
    114 		u_int8_t interleave[2];	/* interleave */
    115 		u_int8_t trk_skew[2];	/* track skew factor */
    116 		u_int8_t cyl_skew[2];	/* cylinder skew */
    117 		u_int8_t flags;		/* various */
    118 #define	DISK_FMT_SURF	0x10
    119 #define	DISK_FMT_RMB	0x20
    120 #define	DISK_FMT_HSEC	0x40
    121 #define	DISK_FMT_SSEC	0x80
    122 		u_int8_t reserved2;
    123 		u_int8_t reserved3;
    124 	} disk_format;
    125 	struct page_rigid_geometry {
    126 		u_int8_t pg_code;	/* page code (should be 4) */
    127 		u_int8_t pg_length;	/* page length (should be 0x16)	*/
    128 		u_int8_t ncyl[3];	/* number of cylinders */
    129 		u_int8_t nheads;	/* number of heads */
    130 		u_int8_t st_cyl_wp[3];	/* starting cyl., write precomp */
    131 		u_int8_t st_cyl_rwc[3];	/* starting cyl., red. write cur */
    132 		u_int8_t driv_step[2];	/* drive step rate */
    133 		u_int8_t land_zone[3];	/* landing zone cylinder */
    134 		u_int8_t sp_sync_ctl;	/* spindle synch control */
    135 #define SPINDLE_SYNCH_MASK	0x03	/* mask of valid bits */
    136 #define SPINDLE_SYNCH_NONE	0x00	/* synch disabled or not supported */
    137 #define SPINDLE_SYNCH_SLAVE	0x01	/* disk is a slave */
    138 #define SPINDLE_SYNCH_MASTER	0x02	/* disk is a master */
    139 #define SPINDLE_SYNCH_MCONTROL	0x03	/* disk is a master control */
    140 		u_int8_t rot_offset;	/* rotational offset (for spindle synch) */
    141 		u_int8_t reserved1;
    142 		u_int8_t rpm[2];	/* media rotation speed */
    143 		u_int8_t reserved2;
    144 		u_int8_t reserved3;
    145     	} rigid_geometry;
    146 	struct page_flex_geometry {
    147 		u_int8_t pg_code;	/* page code (should be 5) */
    148 		u_int8_t pg_length;	/* page length (should be 0x1e) */
    149 		u_int8_t xfr_rate[2];
    150 		u_int8_t nheads;	/* number of heads */
    151 		u_int8_t ph_sec_tr;	/* physical sectors per track */
    152 		u_int8_t bytes_s[2];	/* bytes per sector */
    153 		u_int8_t ncyl[2];	/* number of cylinders */
    154 		u_int8_t st_cyl_wp[2];	/* start cyl., write precomp */
    155 		u_int8_t st_cyl_rwc[2];	/* start cyl., red. write cur */
    156 		u_int8_t driv_step[2];	/* drive step rate */
    157 		u_int8_t driv_step_w;	/* drive step pulse width */
    158 		u_int8_t head_settle[2];/* head settle delay */
    159 		u_int8_t motor_on;	/* motor on delay */
    160 		u_int8_t motor_off;	/* motor off delay */
    161 		u_int8_t flags;		/* various flags */
    162 #define MOTOR_ON		0x20	/* motor on (pin 16)? */
    163 #define START_AT_SECTOR_1	0x40	/* start at sector 1  */
    164 #define READY_VALID		0x20	/* RDY (pin 34) valid */
    165 		u_int8_t step_p_cyl;	/* step pulses per cylinder */
    166 		u_int8_t write_pre;	/* write precompensation */
    167 		u_int8_t head_load;	/* head load delay */
    168 		u_int8_t head_unload;	/* head unload delay */
    169 		u_int8_t pin_34_2;	/* pin 34 (6) pin 2 (7/11) definition */
    170 		u_int8_t pin_4_1;	/* pin 4 (8/9) pin 1 (13) definition */
    171 		u_int8_t reserved1;
    172 		u_int8_t reserved2;
    173 		u_int8_t reserved3;
    174 		u_int8_t reserved4;
    175 	} flex_geometry;
    176 };
    177 
    178 #endif /* _SCSI_SCSI_DISK_H */
    179