fdreg.h revision 1.2
1 /* $NetBSD: fdreg.h,v 1.2 2000/05/02 03:33:45 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 */ 37 38 /* 39 * AT floppy controller registers and bitfields 40 */ 41 42 /* uses NEC765 controller */ 43 #include <dev/ic/nec765reg.h> 44 45 /* registers */ 46 #define fdout 0 /* Digital Output Register (W) */ 47 #define FDO_FDSEL 0x03 /* floppy device select */ 48 #define FDO_FRST 0x04 /* floppy controller reset */ 49 #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ 50 #define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */ 51 52 #define fdsts 2 /* NEC 765 Main Status Register (R) */ 53 #define fddata 3 /* NEC 765 Data Register (R/W) */ 54 55 #define fdctl 5 /* Control Register (W) */ 56 #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ 57 #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ 58 #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ 59 #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ 60 61 #define fdin 5 /* Digital Input Register (R) */ 62 #define FDI_DCHG 0x80 /* diskette has been changed */ 63 64 #define FDC_BSIZE 512 65 66 /* 67 * This constant is a little misleading. Historically, the floppy 68 * controller is located at 0x3f0-0x3f7, but the actual registers 69 * are 0x3f2, 0x3f3, 0x3f4, and 0x3f7. This constant assumes the 70 * historic range, but the offsets above reflect the `real' offsets. 71 */ 72 #define FDC_NPORT 8 73 74 /* 75 * Copyright (C) 1992-1994 by Joerg Wunsch, Dresden 76 * All rights reserved. 77 * 78 * Redistribution and use in source and binary forms, with or without 79 * modification, are permitted provided that the following conditions 80 * are met: 81 * 1. Redistributions of source code must retain the above copyright 82 * notice, this list of conditions and the following disclaimer. 83 * 2. Redistributions in binary form must reproduce the above copyright 84 * notice, this list of conditions and the following disclaimer in the 85 * documentation and/or other materials provided with the distribution. 86 * 87 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY 88 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 89 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 90 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE 91 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 92 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 93 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 94 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 95 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 96 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 97 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 98 * DAMAGE. 99 * 100 * From: FreeBSD: Id: ioctl_fd.h,v 1.7 1994/10/30 19:17:39 joerg Exp 101 */ 102 103 #define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 104 /* 2.88 MB drives */ 105 106 struct ne7_fd_formb { 107 int cyl, head; 108 int transfer_rate; /* fdreg.h: FDC_???KBPS */ 109 110 union { 111 struct fd_form_data { 112 /* 113 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 114 * it is hardware-dependant since it exactly 115 * matches the byte sequence to write to FDC 116 * during its `format track' operation 117 */ 118 u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 119 u_char nsecs; /* must be <= FD_MAX_NSEC */ 120 u_char gaplen; /* GAP 3 length; usually 84 */ 121 u_char fillbyte; /* usually 0xf6 */ 122 struct fd_idfield_data { 123 /* 124 * data to write into id fields; 125 * for obscure formats, they mustn't match 126 * the real values (but mostly do) 127 */ 128 u_char cylno; /* 0 thru 79 (or 39) */ 129 u_char headno; /* 0, or 1 */ 130 u_char secno; /* starting at 1! */ 131 u_char secsize; /* usually 2 */ 132 } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 133 } structured; 134 u_char raw[1]; /* to have continuous indexed access */ 135 } format_info; 136 }; 137 138 /* make life easier */ 139 # define fd_formb_secshift format_info.structured.secshift 140 # define fd_formb_nsecs format_info.structured.nsecs 141 # define fd_formb_gaplen format_info.structured.gaplen 142 # define fd_formb_fillbyte format_info.structured.fillbyte 143 /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 144 # define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 145 # define fd_formb_headno(i) format_info.structured.idfields[i].headno 146 # define fd_formb_secno(i) format_info.structured.idfields[i].secno 147 # define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 148
Indexes created Fri Sep 26 08:10:20 GMT 2025