FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/fdc.h
1 /*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * from: @(#)fd.c 7.4 (Berkeley) 5/25/91
34 * $FreeBSD: src/sys/i386/isa/fdc.h,v 1.6.2.2 1999/09/05 08:12:36 peter Exp $
35 *
36 */
37
38 enum fdc_type
39 {
40 FDC_NE765, FDC_I82077, FDC_NE72065, FDC_UNKNOWN = -1
41 };
42
43
44 /***********************************************************************\
45 * Per controller structure. *
46 \***********************************************************************/
47 struct fdc_data
48 {
49 int fdcu; /* our unit number */
50 int baseport;
51 int dmachan;
52 int flags;
53 #define FDC_ATTACHED 0x01
54 #define FDC_HASFTAPE 0x02
55 #define FDC_TAPE_BUSY 0x04
56 #define FDC_STAT_VALID 0x08
57 #define FDC_HAS_FIFO 0x10
58 struct fd_data *fd;
59 int fdu; /* the active drive */
60 int state;
61 int retry;
62 int fdout; /* mirror of the w/o digital output reg */
63 u_long status[7]; /* copy of the registers */
64 enum fdc_type fdct; /* chip version of FDC */
65 int fdc_errs; /* number of logged errors */
66 struct buf_queue_head head; /* Head of buf chain */
67 };
68
69 /***********************************************************************\
70 * Throughout this file the following conventions will be used: *
71 * fd is a pointer to the fd_data struct for the drive in question *
72 * fdc is a pointer to the fdc_data struct for the controller *
73 * fdu is the floppy drive unit number *
74 * fdcu is the floppy controller unit number *
75 * fdsu is the floppy drive unit number on that controller. (sub-unit) *
76 \***********************************************************************/
77 typedef int fdu_t;
78 typedef int fdcu_t;
79 typedef int fdsu_t;
80 typedef struct fd_data *fd_p;
81 typedef struct fdc_data *fdc_p;
82 typedef enum fdc_type fdc_t;
83
84 #define FDUNIT(s) (((s)>>6)&03)
85 #define FDTYPE(s) ((s)&077)
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