wdcreg.h revision 1.7
1 /* $NetBSD: wdcreg.h,v 1.7 1994/10/27 04:18:30 cgd 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 0x0 /* data register (R/W - 16 bits) */ 45 #define wd_error 0x1 /* error register (R) */ 46 #define wd_precomp wd_error /* write precompensation (W) */ 47 #define wd_seccnt 0x2 /* sector count (R/W) */ 48 #define wd_sector 0x3 /* first sector number (R/W) */ 49 #define wd_cyl_lo 0x4 /* cylinder address, low byte (R/W) */ 50 #define wd_cyl_hi 0x5 /* cylinder address, high byte (R/W)*/ 51 #define wd_sdh 0x6 /* sector size/drive/head (R/W)*/ 52 #define wd_command 0x7 /* command register (W) */ 53 #define wd_status wd_command /* immediate status (R) */ 54 55 #define wd_altsts 0x206 /*alternate fixed disk status(via 1015) (R)*/ 56 #define wd_ctlr 0x206 /*fixed disk controller control(via 1015) (W)*/ 57 #define WDCTL_4BIT 0x8 /* use four head bits (wd1003) */ 58 #define WDCTL_RST 0x4 /* reset the controller */ 59 #define WDCTL_IDS 0x2 /* disable controller interrupts */ 60 #define wd_digin 0x207 /* disk controller input(via 1015) (R)*/ 61 62 /* 63 * Status Bits. 64 */ 65 #define WDCS_BUSY 0x80 /* Controller busy bit. */ 66 #define WDCS_READY 0x40 /* Selected drive is ready */ 67 #define WDCS_WRTFLT 0x20 /* Write fault */ 68 #define WDCS_SEEKCMPLT 0x10 /* Seek complete */ 69 #define WDCS_DRQ 0x08 /* Data request bit. */ 70 #define WDCS_ECCCOR 0x04 /* ECC correction made in data */ 71 #define WDCS_INDEX 0x02 /* Index pulse from selected drive */ 72 #define WDCS_ERR 0x01 /* Error detect bit. */ 73 74 #define WDCS_BITS "\020\010busy\007rdy\006wrtflt\005seekdone\004drq\003ecc_cor\002index\001err" 75 76 #define WDERR_BITS "\020\010badblk\007uncorr\006id_crc\005no_id\003abort\002tr000\001no_dam" 77 78 /* 79 * Commands for Disk Controller. 80 */ 81 #define WDCC_RESTORE 0x10 /* disk restore code -- resets cntlr */ 82 83 #define WDCC_READ 0x20 /* disk read code */ 84 #define WDCC_WRITE 0x30 /* disk write code */ 85 #define WDCC__LONG 0x02 /* modifier -- access ecc bytes */ 86 #define WDCC__NORETRY 0x01 /* modifier -- no retrys */ 87 88 #define WDCC_FORMAT 0x50 /* disk format code */ 89 #define WDCC_DIAGNOSE 0x90 /* controller diagnostic */ 90 #define WDCC_IDC 0x91 /* initialize drive command */ 91 92 #define WDCC_EXTDCMD 0xE0 /* send extended command */ 93 #define WDCC_READP 0xEC /* read parameters from controller */ 94 #define WDCC_CACHEC 0xEF /* cache control */ 95 96 #define WD_STEP 0 /* winchester- default 35us step */ 97 98 #define WDSD_IBM 0xa0 /* forced to 512 byte sector, ecc */ 99 100 101 #ifdef KERNEL 102 /* 103 * read parameters command returns this: 104 */ 105 struct wdparams { 106 /* drive info */ 107 short wdp_config; /* general configuration */ 108 short wdp_fixedcyl; /* number of non-removable cylinders */ 109 short wdp_removcyl; /* number of removable cylinders */ 110 short wdp_heads; /* number of heads */ 111 short wdp_unfbytespertrk; /* number of unformatted bytes/track */ 112 short wdp_unfbytes; /* number of unformatted bytes/sector */ 113 short wdp_sectors; /* number of sectors */ 114 short wdp_minisg; /* minimum bytes in inter-sector gap*/ 115 short wdp_minplo; /* minimum bytes in postamble */ 116 short wdp_vendstat; /* number of words of vendor status */ 117 /* controller info */ 118 char wdp_cnsn[20]; /* controller serial number */ 119 short wdp_cntype; /* controller type */ 120 #define WDTYPE_SINGLEPORTSECTOR 1 /* single port, single sector buffer */ 121 #define WDTYPE_DUALPORTMULTI 2 /* dual port, multiple sector buffer */ 122 #define WDTYPE_DUALPORTMULTICACHE 3 /* above plus track cache */ 123 short wdp_cnsbsz; /* sector buffer size, in sectors */ 124 short wdp_necc; /* ecc bytes appended */ 125 char wdp_rev[8]; /* firmware revision */ 126 char wdp_model[40]; /* model name */ 127 short wdp_nsecperint; /* sectors per interrupt */ 128 short wdp_usedmovsd; /* can use double word read/write? */ 129 }; 130 #endif KERNEL 131
Indexes created Mon Sep 29 21:09:56 GMT 2025