1 /* $NetBSD: wdcreg.h,v 1.11 1994/11/23 07:56:52 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1991 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)wdreg.h 7.1 (Berkeley) 5/9/91 39 */ 40 41 /* 42 * Disk Controller register definitions. 43 */ 44 #define wd_data 0x000 /* data register (R/W - 16 bits) */ 45 #define wd_error 0x001 /* error register (R) */ 46 #define wd_precomp 0x001 /* write precompensation (W) */ 47 #define wd_features 0x001 /* features (W) */ 48 #define wd_seccnt 0x002 /* sector count (R/W) */ 49 #define wd_sector 0x003 /* first sector number (R/W) */ 50 #define wd_cyl_lo 0x004 /* cylinder address, low byte (R/W) */ 51 #define wd_cyl_hi 0x005 /* cylinder address, high byte (R/W) */ 52 #define wd_sdh 0x006 /* sector size/drive/head (R/W) */ 53 #define wd_command 0x007 /* command register (W) */ 54 #define wd_status 0x007 /* immediate status (R) */ 55 56 #define wd_altsts 0x206 /* alternate fixed disk status (via 1015) (R) */ 57 #define wd_ctlr 0x206 /* fixed disk controller control (via 1015) (W) */ 58 #define WDCTL_4BIT 0x08 /* use four head bits (wd1003) */ 59 #define WDCTL_RST 0x04 /* reset the controller */ 60 #define WDCTL_IDS 0x02 /* disable controller interrupts */ 61 #define wd_digin 0x207 /* disk controller input (via 1015) (R) */ 62 63 /* 64 * Status bits. 65 */ 66 #define WDCS_BSY 0x80 /* busy */ 67 #define WDCS_DRDY 0x40 /* drive ready */ 68 #define WDCS_DWF 0x20 /* drive write fault */ 69 #define WDCS_DSC 0x10 /* drive seek complete */ 70 #define WDCS_DRQ 0x08 /* data request */ 71 #define WDCS_CORR 0x04 /* corrected data */ 72 #define WDCS_IDX 0x02 /* index */ 73 #define WDCS_ERR 0x01 /* error */ 74 #define WDCS_BITS "\020\010bsy\007drdy\006dwf\005dsc\004drq\003corr\002idx\001err" 75 76 /* 77 * Error bits. 78 */ 79 #define WDCE_BBK 0x80 /* bad block detected */ 80 #define WDCE_UNC 0x40 /* uncorrectable data error */ 81 #define WDCE_MC 0x20 /* media changed */ 82 #define WDCE_IDNF 0x10 /* id not found */ 83 #define WDCE_ABRT 0x08 /* aborted command */ 84 #define WDCE_MCR 0x04 /* media change requested */ 85 #define WDCE_TK0NF 0x02 /* track 0 not found */ 86 #define WDCE_AMNF 0x01 /* address mark not found */ 87 #define WDERR_BITS "\020\010bbk\007unc\006mc\005idnf\004mcr\003abrt\002tk0nf\001amnf" 88 89 /* 90 * Commands for Disk Controller. 91 */ 92 #define WDCC_RECAL 0x10 /* disk restore code -- resets cntlr */ 93 94 #define WDCC_READ 0x20 /* disk read code */ 95 #define WDCC_WRITE 0x30 /* disk write code */ 96 #define WDCC__LONG 0x02 /* modifier -- access ecc bytes */ 97 #define WDCC__NORETRY 0x01 /* modifier -- no retrys */ 98 99 #define WDCC_FORMAT 0x50 /* disk format code */ 100 #define WDCC_DIAGNOSE 0x90 /* controller diagnostic */ 101 #define WDCC_IDP 0x91 /* initialize drive parameters */ 102 103 #define WDCC_READMULTI 0xc4 /* read multiple */ 104 #define WDCC_WRITEMULTI 0xc5 /* write multiple */ 105 #define WDCC_SETMULTI 0xc6 /* set multiple mode */ 106 107 #define WDCC_READDMA 0xc8 /* read with DMA */ 108 #define WDCC_WRITEDMA 0xca /* write with DMA */ 109 110 #define WDCC_ACKMC 0xdb /* acknowledge media change */ 111 #define WDCC_LOCK 0xde /* lock drawer */ 112 #define WDCC_UNLOCK 0xdf /* unlock drawer */ 113 114 #define WDCC_IDENTIFY 0xec /* read parameters from controller */ 115 #define WDCC_CACHEC 0xef /* cache control */ 116 117 #define WDSD_IBM 0xa0 /* forced to 512 byte sector, ecc */ 118 #define WDSD_CHS 0x00 /* cylinder/head/sector addressing */ 119 #define WDSD_LBA 0x40 /* logical block addressing */ 120 121 122 #ifdef KERNEL 123 /* 124 * read parameters command returns this: 125 */ 126 struct wdparams { 127 /* drive info */ 128 short wdp_config; /* general configuration */ 129 #define WD_CFG_REMOVABLE 0x0080 130 #define WD_CFG_FIXED 0x0040 131 short wdp_cylinders; /* number of non-removable cylinders */ 132 char __reserved1[2]; 133 short wdp_heads; /* number of heads */ 134 short wdp_unfbytespertrk; /* number of unformatted bytes/track */ 135 short wdp_unfbytespersec; /* number of unformatted bytes/sector */ 136 short wdp_sectors; /* number of sectors */ 137 char wdp_vendor1[6]; 138 /* controller info */ 139 char wdp_serial[20]; /* serial number */ 140 short wdp_buftype; /* buffer type */ 141 #define WD_BUF_SINGLEPORTSECTOR 1 /* single port, single sector buffer */ 142 #define WD_BUF_DUALPORTMULTI 2 /* dual port, multiple sector buffer */ 143 #define WD_BUF_DUALPORTMULTICACHE 3 /* above plus track cache */ 144 short wdp_bufsize; /* buffer size, in 512-byte units */ 145 short wdp_eccbytes; /* ecc bytes appended */ 146 char wdp_revision[8]; /* firmware revision */ 147 char wdp_model[40]; /* model name */ 148 u_char wdp_maxmulti; /* maximum sectors per interrupt */ 149 char wdp_vendor2[1]; 150 short wdp_usedmovsd; /* can use double word read/write? */ 151 char wdp_vendor3[1]; 152 char wdp_capabilities; /* capability flags */ 153 #define WD_CAP_LBA 0x02 154 #define WD_CAP_DMA 0x01 155 char __reserved2[2]; 156 char wdp_vendor4[1]; 157 char wdp_piotiming; /* PIO timing mode */ 158 char wdp_vendor5[1]; 159 char wdp_dmatiming; /* DMA timing mode */ 160 }; 161 #endif KERNEL 162