1 /* $NetBSD: fdreg.h,v 1.5 2011/06/30 20:09:17 wiz 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)fdreg.h 7.1 (Berkeley) 5/9/91 32 * from: fdreg.h,v 1.9 1996/11/29 16:28:40 jtk 33 */ 34 35 /* 36 * AT floppy controller registers and bitfields 37 */ 38 39 /* uses NEC765 controller */ 40 #include <dev/ic/nec765reg.h> 41 42 /* registers */ 43 #define fdout 2 /* Digital Output Register (W) */ 44 #define FDO_FDSEL 0x03 /* floppy device select */ 45 #define FDO_FRST 0x04 /* floppy controller reset */ 46 #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ 47 #define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */ 48 49 #define fdsts 4 /* NEC 765 Main Status Register (R) */ 50 #define fddata 5 /* NEC 765 Data Register (R/W) */ 51 52 #define fdctl 7 /* Control Register (W) */ 53 #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ 54 #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ 55 #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ 56 #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ 57 58 #define fdin 7 /* Digital Input Register (R) */ 59 #define FDI_DCHG 0x80 /* diskette has been changed */ 60 61 #define FDC_BSIZE 512 62 #define FDC_NPORT 8 63 #define FDC_MAXIOSIZE PAGE_SIZE /* XXX should be MAXBSIZE */ 64 65 /* 66 * Copyright (C) 1992-1994 by Joerg Wunsch, Dresden 67 * All rights reserved. 68 * 69 * Redistribution and use in source and binary forms, with or without 70 * modification, are permitted provided that the following conditions 71 * are met: 72 * 1. Redistributions of source code must retain the above copyright 73 * notice, this list of conditions and the following disclaimer. 74 * 2. Redistributions in binary form must reproduce the above copyright 75 * notice, this list of conditions and the following disclaimer in the 76 * documentation and/or other materials provided with the distribution. 77 * 78 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY 79 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 80 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 81 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE 82 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 83 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 84 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 85 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 86 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 87 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 88 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 89 * DAMAGE. 90 * 91 * From: FreeBSD: Id: ioctl_fd.h,v 1.7 1994/10/30 19:17:39 joerg Exp 92 */ 93 94 #define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 95 /* 2.88 MB drives */ 96 97 struct ne7_fd_formb { 98 int cyl, head; 99 int transfer_rate; /* fdreg.h: FDC_???KBPS */ 100 101 union { 102 struct fd_form_data { 103 /* 104 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 105 * it is hardware-dependent since it exactly 106 * matches the byte sequence to write to FDC 107 * during its `format track' operation 108 */ 109 u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 110 u_char nsecs; /* must be <= FD_MAX_NSEC */ 111 u_char gaplen; /* GAP 3 length; usually 84 */ 112 u_char fillbyte; /* usually 0xf6 */ 113 struct fd_idfield_data { 114 /* 115 * data to write into id fields; 116 * for obscure formats, they mustn't match 117 * the real values (but mostly do) 118 */ 119 u_char cylno; /* 0 thru 79 (or 39) */ 120 u_char headno; /* 0, or 1 */ 121 u_char secno; /* starting at 1! */ 122 u_char secsize; /* usually 2 */ 123 } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 124 } structured; 125 u_char raw[1]; /* to have continuous indexed access */ 126 } format_info; 127 }; 128 129 /* make life easier */ 130 # define fd_formb_secshift format_info.structured.secshift 131 # define fd_formb_nsecs format_info.structured.nsecs 132 # define fd_formb_gaplen format_info.structured.gaplen 133 # define fd_formb_fillbyte format_info.structured.fillbyte 134 /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 135 # define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 136 # define fd_formb_headno(i) format_info.structured.idfields[i].headno 137 # define fd_formb_secno(i) format_info.structured.idfields[i].secno 138 # define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 139