fdreg.h revision 1.2
1/* $NetBSD: fdreg.h,v 1.2 2003/04/09 01:54:42 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 1991 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)fdreg.h 7.1 (Berkeley) 5/9/91 36 * from: fdreg.h,v 1.9 1996/11/29 16:28:40 jtk 37 */ 38 39/* 40 * AT floppy controller registers and bitfields 41 */ 42 43/* uses NEC765 controller */ 44#include <dev/ic/nec765reg.h> 45 46/* registers */ 47#define fdout 2 /* Digital Output Register (W) */ 48#define FDO_FDSEL 0x03 /* floppy device select */ 49#define FDO_FRST 0x04 /* floppy controller reset */ 50#define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ 51#define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */ 52 53#define fdsts 4 /* NEC 765 Main Status Register (R) */ 54#define fddata 5 /* NEC 765 Data Register (R/W) */ 55 56#define fdctl 7 /* Control Register (W) */ 57#define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ 58#define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ 59#define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ 60#define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ 61 62#define fdin 7 /* Digital Input Register (R) */ 63#define FDI_DCHG 0x80 /* diskette has been changed */ 64 65#define FDC_BSIZE 512 66#define FDC_NPORT 8 67#define FDC_MAXIOSIZE PAGE_SIZE /* XXX should be MAXBSIZE */ 68 69/* 70 * Copyright (C) 1992-1994 by Joerg Wunsch, Dresden 71 * All rights reserved. 72 * 73 * Redistribution and use in source and binary forms, with or without 74 * modification, are permitted provided that the following conditions 75 * are met: 76 * 1. Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 2. Redistributions in binary form must reproduce the above copyright 79 * notice, this list of conditions and the following disclaimer in the 80 * documentation and/or other materials provided with the distribution. 81 * 82 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY 83 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 84 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 85 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE 86 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 87 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 88 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 89 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 90 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 91 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 92 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 93 * DAMAGE. 94 * 95 * From: FreeBSD: Id: ioctl_fd.h,v 1.7 1994/10/30 19:17:39 joerg Exp 96 */ 97 98#define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 99 /* 2.88 MB drives */ 100 101struct ne7_fd_formb { 102 int cyl, head; 103 int transfer_rate; /* fdreg.h: FDC_???KBPS */ 104 105 union { 106 struct fd_form_data { 107 /* 108 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 109 * it is hardware-dependant since it exactly 110 * matches the byte sequence to write to FDC 111 * during its `format track' operation 112 */ 113 u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 114 u_char nsecs; /* must be <= FD_MAX_NSEC */ 115 u_char gaplen; /* GAP 3 length; usually 84 */ 116 u_char fillbyte; /* usually 0xf6 */ 117 struct fd_idfield_data { 118 /* 119 * data to write into id fields; 120 * for obscure formats, they mustn't match 121 * the real values (but mostly do) 122 */ 123 u_char cylno; /* 0 thru 79 (or 39) */ 124 u_char headno; /* 0, or 1 */ 125 u_char secno; /* starting at 1! */ 126 u_char secsize; /* usually 2 */ 127 } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 128 } structured; 129 u_char raw[1]; /* to have continuous indexed access */ 130 } format_info; 131}; 132 133/* make life easier */ 134# define fd_formb_secshift format_info.structured.secshift 135# define fd_formb_nsecs format_info.structured.nsecs 136# define fd_formb_gaplen format_info.structured.gaplen 137# define fd_formb_fillbyte format_info.structured.fillbyte 138/* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 139# define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 140# define fd_formb_headno(i) format_info.structured.idfields[i].headno 141# define fd_formb_secno(i) format_info.structured.idfields[i].secno 142# define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 143