Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/scsi/scsi_disk.h
Version:
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1 /* 2 * SCSI interface description 3 */ 4 5 /* 6 * Some lines of this file come from a file of the name "scsi.h" 7 * distributed by OSF as part of mach2.5, 8 * so the following disclaimer has been kept. 9 * 10 * Copyright 1990 by Open Software Foundation, 11 * Grenoble, FRANCE 12 * 13 * All Rights Reserved 14 * 15 * Permission to use, copy, modify, and distribute this software and 16 * its documentation for any purpose and without fee is hereby granted, 17 * provided that the above copyright notice appears in all copies and 18 * that both the copyright notice and this permission notice appear in 19 * supporting documentation, and that the name of OSF or Open Software 20 * Foundation not be used in advertising or publicity pertaining to 21 * distribution of the software without specific, written prior 22 * permission. 23 * 24 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 25 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, 26 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 27 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 28 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 29 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 30 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 31 */ 32 33 /* 34 * Largely written by Julian Elischer (julian@tfs.com) 35 * for TRW Financial Systems. 36 * 37 * TRW Financial Systems, in accordance with their agreement with Carnegie 38 * Mellon University, makes this software available to CMU to distribute 39 * or use in any manner that they see fit as long as this message is kept with 40 * the software. For this reason TFS also grants any other persons or 41 * organisations permission to use or modify this software. 42 * 43 * TFS supplies this software to be publicly redistributed 44 * on the understanding that TFS is not responsible for the correct 45 * functioning of this software in any circumstances. 46 * 47 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 48 * 49 * $FreeBSD: src/sys/scsi/scsi_disk.h,v 1.9.4.1 1999/09/05 08:21:42 peter Exp $ 50 */ 51 52 /* 53 * SCSI command format 54 */ 55 56 #ifndef _SCSI_SCSI_DISK_H 57 #define _SCSI_SCSI_DISK_H 1 58 59 struct scsi_reassign_blocks 60 { 61 u_char op_code; 62 u_char byte2; 63 u_char unused[3]; 64 u_char control; 65 }; 66 67 struct scsi_rw 68 { 69 u_char op_code; 70 u_char addr_2; /* Most significant */ 71 #define SRW_TOPADDR 0x1F /* only 5 bits here */ 72 u_char addr_1; 73 u_char addr_0; /* least significant */ 74 u_char length; 75 u_char control; 76 }; 77 78 struct scsi_rw_big 79 { 80 u_char op_code; 81 u_char byte2; 82 #define SRWB_RELADDR 0x01 83 u_char addr_3; /* Most significant */ 84 u_char addr_2; 85 u_char addr_1; 86 u_char addr_0; /* least significant */ 87 u_char reserved; 88 u_char length2; 89 u_char length1; 90 u_char control; 91 }; 92 93 struct scsi_read_capacity 94 { 95 u_char op_code; 96 u_char byte2; 97 u_char addr_3; /* Most Significant */ 98 u_char addr_2; 99 u_char addr_1; 100 u_char addr_0; /* Least Significant */ 101 u_char unused[3]; 102 u_char control; 103 }; 104 105 struct scsi_start_stop 106 { 107 u_char op_code; 108 u_char byte2; 109 u_char unused[2]; 110 u_char how; 111 #define SSS_START 0x01 112 #define SSS_LOEJ 0x02 113 u_char control; 114 }; 115 116 117 118 /* 119 * Opcodes 120 */ 121 122 #define REASSIGN_BLOCKS 0x07 123 #define READ_COMMAND 0x08 124 #define WRITE_COMMAND 0x0a 125 #define MODE_SELECT 0x15 126 #define MODE_SENSE 0x1a 127 #define START_STOP 0x1b 128 #define PREVENT_ALLOW 0x1e 129 #define READ_CAPACITY 0x25 130 #define READ_BIG 0x28 131 #define WRITE_BIG 0x2a 132 133 134 135 struct scsi_read_cap_data 136 { 137 u_char addr_3; /* Most significant */ 138 u_char addr_2; 139 u_char addr_1; 140 u_char addr_0; /* Least significant */ 141 u_char length_3; /* Most significant */ 142 u_char length_2; 143 u_char length_1; 144 u_char length_0; /* Least significant */ 145 }; 146 147 struct scsi_reassign_blocks_data 148 { 149 u_char reserved[2]; 150 u_char length_msb; 151 u_char length_lsb; 152 struct 153 { 154 u_char dlbaddr_3; /* defect logical block address (MSB) */ 155 u_char dlbaddr_2; 156 u_char dlbaddr_1; 157 u_char dlbaddr_0; /* defect logical block address (LSB) */ 158 } defect_descriptor[1]; 159 }; 160 161 union disk_pages /* this is the structure copied from osf */ 162 { 163 struct page_disk_format { 164 u_char pg_code; /* page code (should be 3) */ 165 #define DISK_PGCODE 0x3F /* only 6 bits valid */ 166 u_char pg_length; /* page length (should be 0x16) */ 167 u_char trk_z_1; /* tracks per zone (MSB) */ 168 u_char trk_z_0; /* tracks per zone (LSB) */ 169 u_char alt_sec_1; /* alternate sectors per zone (MSB) */ 170 u_char alt_sec_0; /* alternate sectors per zone (LSB) */ 171 u_char alt_trk_z_1; /* alternate tracks per zone (MSB) */ 172 u_char alt_trk_z_0; /* alternate tracks per zone (LSB) */ 173 u_char alt_trk_v_1; /* alternate tracks per volume (MSB) */ 174 u_char alt_trk_v_0; /* alternate tracks per volume (LSB) */ 175 u_char ph_sec_t_1; /* physical sectors per track (MSB) */ 176 u_char ph_sec_t_0; /* physical sectors per track (LSB) */ 177 u_char bytes_s_1; /* bytes per sector (MSB) */ 178 u_char bytes_s_0; /* bytes per sector (LSB) */ 179 u_char interleave_1;/* interleave (MSB) */ 180 u_char interleave_0;/* interleave (LSB) */ 181 u_char trk_skew_1; /* track skew factor (MSB) */ 182 u_char trk_skew_0; /* track skew factor (LSB) */ 183 u_char cyl_skew_1; /* cylinder skew (MSB) */ 184 u_char cyl_skew_0; /* cylinder skew (LSB) */ 185 u_char flags; /* various */ 186 #define DISK_FMT_SURF 0x10 187 #define DISK_FMT_RMB 0x20 188 #define DISK_FMT_HSEC 0x40 189 #define DISK_FMT_SSEC 0x80 190 u_char reserved21; 191 u_char reserved22; 192 u_char reserved23; 193 } disk_format; 194 struct page_rigid_geometry { 195 u_char pg_code; /* page code (should be 4) */ 196 u_char pg_length; /* page length (should be 0x16) */ 197 u_char ncyl_2; /* number of cylinders (MSB) */ 198 u_char ncyl_1; /* number of cylinders */ 199 u_char ncyl_0; /* number of cylinders (LSB) */ 200 u_char nheads; /* number of heads */ 201 u_char st_cyl_wp_2; /* starting cyl., write precomp (MSB) */ 202 u_char st_cyl_wp_1; /* starting cyl., write precomp */ 203 u_char st_cyl_wp_0; /* starting cyl., write precomp (LSB) */ 204 u_char st_cyl_rwc_2;/* starting cyl., red. write cur (MSB)*/ 205 u_char st_cyl_rwc_1;/* starting cyl., red. write cur */ 206 u_char st_cyl_rwc_0;/* starting cyl., red. write cur (LSB)*/ 207 u_char driv_step_1; /* drive step rate (MSB) */ 208 u_char driv_step_0; /* drive step rate (LSB) */ 209 u_char land_zone_2; /* landing zone cylinder (MSB) */ 210 u_char land_zone_1; /* landing zone cylinder */ 211 u_char land_zone_0; /* landing zone cylinder (LSB) */ 212 u_char rpl; /* rotational position locking (2 bits) */ 213 u_char rot_offset; /* rotational offset */ 214 u_char reserved19; 215 u_char medium_rot_rate_1; /* medium rotation rate (RPM) (MSB) */ 216 u_char medium_rot_rate_0; /* medium rotation rate (RPM) (LSB) */ 217 u_char reserved22; 218 u_char reserved23; 219 } rigid_geometry; 220 } ; 221 #endif /* _SCSI_SCSI_DISK_H*/
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