fdreg.h revision 1.1.1.1.24.1
1 /* $NetBSD: fdreg.h,v 1.1.1.1.24.1 1999/02/02 23:47:12 minoura 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 */ 37 38 /* 39 * x680x0 floppy controller registers and bitfields 40 */ 41 42 /* uses NEC72065 controller */ 43 #include <dev/ic/nec765reg.h> 44 45 /* registers */ 46 #define FDC_ADDR 0xe94000 /* builtin fdc is here */ 47 #define fdstat 1 /* NEC 765 Main Status Register (R) */ 48 #define fddata 3 /* NEC 765 Data Register (R/W) */ 49 #define fddrvstat 5 /* drive status register */ 50 #define fdselect 7 /* Control Register (W) */ 51 #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ 52 #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ 53 #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ 54 #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ 55 56 #define FDC_BSIZE 512 57 #define FDC_MAXIOSIZE MAXBSIZE 58 59 /* 60 * Copyright (C) 1992-1994 by Joerg Wunsch, Dresden 61 * All rights reserved. 62 * 63 * Redistribution and use in source and binary forms, with or without 64 * modification, are permitted provided that the following conditions 65 * are met: 66 * 1. Redistributions of source code must retain the above copyright 67 * notice, this list of conditions and the following disclaimer. 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in the 70 * documentation and/or other materials provided with the distribution. 71 * 72 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY 73 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 74 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 75 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE 76 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 77 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 78 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 79 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 80 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 81 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 82 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 83 * DAMAGE. 84 * 85 * From: FreeBSD: Id: ioctl_fd.h,v 1.7 1994/10/30 19:17:39 joerg Exp 86 */ 87 88 #define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 89 /* 2.88 MB drives */ 90 91 struct ne7_fd_formb { 92 int cyl, head; 93 int transfer_rate; /* fdreg.h: FDC_???KBPS */ 94 95 union { 96 struct fd_form_data { 97 /* 98 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 99 * it is hardware-dependant since it exactly 100 * matches the byte sequence to write to FDC 101 * during its `format track' operation 102 */ 103 u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 104 u_char nsecs; /* must be <= FD_MAX_NSEC */ 105 u_char gaplen; /* GAP 3 length; usually 84 */ 106 u_char fillbyte; /* usually 0xf6 */ 107 struct fd_idfield_data { 108 /* 109 * data to write into id fields; 110 * for obscure formats, they mustn't match 111 * the real values (but mostly do) 112 */ 113 u_char cylno; /* 0 thru 79 (or 39) */ 114 u_char headno; /* 0, or 1 */ 115 u_char secno; /* starting at 1! */ 116 u_char secsize; /* usually 2 */ 117 } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 118 } structured; 119 u_char raw[1]; /* to have continuous indexed access */ 120 } format_info; 121 }; 122 123 /* make life easier */ 124 # define fd_formb_secshift format_info.structured.secshift 125 # define fd_formb_nsecs format_info.structured.nsecs 126 # define fd_formb_gaplen format_info.structured.gaplen 127 # define fd_formb_fillbyte format_info.structured.fillbyte 128 /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 129 # define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 130 # define fd_formb_headno(i) format_info.structured.idfields[i].headno 131 # define fd_formb_secno(i) format_info.structured.idfields[i].secno 132 # define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 133 134 135 /* Floppy disk controller command bytes. */ 136 #define NE7CMD_RESET 0x36 /* reset command for fdc */ 137
Indexes created Wed Oct 22 13:09:56 GMT 2025