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 | |