| 1 | /* $NetBSD: fdreg.h,v 1.7 2011/06/30 20:09:39 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 | */ |
| 33 | |
| 34 | /* |
| 35 | * AT floppy controller registers and bitfields |
| 36 | */ |
| 37 | |
| 38 | /* uses NEC765 controller */ |
| 39 | #include <dev/ic/nec765reg.h> |
| 40 | |
| 41 | /* registers */ |
| 42 | #define fdout 0 /* Digital Output Register (W) */ |
| 43 | #define FDO_FDSEL 0x03 /* floppy device select */ |
| 44 | #define FDO_FRST 0x04 /* floppy controller reset */ |
| 45 | #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ |
| 46 | #define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */ |
| 47 | |
| 48 | #define fdsts 2 /* NEC 765 Main Status Register (R) */ |
| 49 | #define FDS_DRVBUSY(n) ((1 << n) * 0x01) /* drive busy */ |
| 50 | |
| 51 | #define fddata 3 /* NEC 765 Data Register (R/W) */ |
| 52 | |
| 53 | #define fdctl 5 /* Control Register (W) */ |
| 54 | #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ |
| 55 | #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ |
| 56 | #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ |
| 57 | #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ |
| 58 | |
| 59 | #define fdin 5 /* Digital Input Register (R) */ |
| 60 | #define FDI_DCHG 0x80 /* diskette has been changed */ |
| 61 | |
| 62 | #define FDC_BSIZE 512 |
| 63 | |
| 64 | /* |
| 65 | * This constant is a little misleading. Historically, the floppy |
| 66 | * controller is located at 0x3f0-0x3f7, but the actual registers |
| 67 | * are 0x3f2, 0x3f3, 0x3f4, and 0x3f7. This constant assumes the |
| 68 | * historic range, but the offsets above reflect the `real' offsets. |
| 69 | */ |
| 70 | #define FDC_NPORT 8 |
| 71 | |
| 72 | /* |
| 73 | * Copyright (C) 1992-1994 by Joerg Wunsch, Dresden |
| 74 | * All rights reserved. |
| 75 | * |
| 76 | * Redistribution and use in source and binary forms, with or without |
| 77 | * modification, are permitted provided that the following conditions |
| 78 | * are met: |
| 79 | * 1. Redistributions of source code must retain the above copyright |
| 80 | * notice, this list of conditions and the following disclaimer. |
| 81 | * 2. Redistributions in binary form must reproduce the above copyright |
| 82 | * notice, this list of conditions and the following disclaimer in the |
| 83 | * documentation and/or other materials provided with the distribution. |
| 84 | * |
| 85 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY |
| 86 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 87 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 88 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE |
| 89 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 90 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| 91 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 92 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 93 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 94 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 95 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| 96 | * DAMAGE. |
| 97 | * |
| 98 | * From: FreeBSD: Id: ioctl_fd.h,v 1.7 1994/10/30 19:17:39 joerg Exp |
| 99 | */ |
| 100 | |
| 101 | #define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ |
| 102 | /* 2.88 MB drives */ |
| 103 | |
| 104 | struct ne7_fd_formb { |
| 105 | int cyl, head; |
| 106 | int transfer_rate; /* fdreg.h: FDC_???KBPS */ |
| 107 | |
| 108 | union { |
| 109 | struct fd_form_data { |
| 110 | /* |
| 111 | * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS |
| 112 | * it is hardware-dependent since it exactly |
| 113 | * matches the byte sequence to write to FDC |
| 114 | * during its `format track' operation |
| 115 | */ |
| 116 | u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ |
| 117 | u_char nsecs; /* must be <= FD_MAX_NSEC */ |
| 118 | u_char gaplen; /* GAP 3 length; usually 84 */ |
| 119 | u_char fillbyte; /* usually 0xf6 */ |
| 120 | struct fd_idfield_data { |
| 121 | /* |
| 122 | * data to write into id fields; |
| 123 | * for obscure formats, they mustn't match |
| 124 | * the real values (but mostly do) |
| 125 | */ |
| 126 | u_char cylno; /* 0 thru 79 (or 39) */ |
| 127 | u_char headno; /* 0, or 1 */ |
| 128 | u_char secno; /* starting at 1! */ |
| 129 | u_char secsize; /* usually 2 */ |
| 130 | } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ |
| 131 | } structured; |
| 132 | u_char raw[1]; /* to have continuous indexed access */ |
| 133 | } format_info; |
| 134 | }; |
| 135 | |
| 136 | /* make life easier */ |
| 137 | # define fd_formb_secshift format_info.structured.secshift |
| 138 | # define fd_formb_nsecs format_info.structured.nsecs |
| 139 | # define fd_formb_gaplen format_info.structured.gaplen |
| 140 | # define fd_formb_fillbyte format_info.structured.fillbyte |
| 141 | /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ |
| 142 | # define fd_formb_cylno(i) format_info.structured.idfields[i].cylno |
| 143 | # define fd_formb_headno(i) format_info.structured.idfields[i].headno |
| 144 | # define fd_formb_secno(i) format_info.structured.idfields[i].secno |
| 145 | # define fd_formb_secsize(i) format_info.structured.idfields[i].secsize |
| 146 | |