Annotation of sys/arch/sparc/dev/fdreg.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: fdreg.h,v 1.5 2004/09/22 22:12:58 miod Exp $ */
2: /* $NetBSD: fdreg.h,v 1.6 1997/05/02 13:03:44 pk Exp $ */
3:
4: /*-
5: * Copyright (c) 1991 The Regents of the University of California.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the University nor the names of its contributors
17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: *
32: * @(#)fdreg.h 7.1 (Berkeley) 5/9/91
33: */
34:
35: /*
36: * AT floppy controller registers and bitfields
37: */
38:
39: /* uses NEC765 controller */
40: #include <dev/ic/nec765reg.h>
41:
42: #ifndef _LOCORE
43: struct fdreg_77 {
44: u_int8_t fd_statusA;
45: u_int8_t fd_statusB;
46: u_int8_t fd_dor; /* Digital Output Register (R/W) */
47: u_int8_t fd_tdr; /* Tape Control Register (R/W) */
48: u_int8_t fd_msr; /* Main Status Register (R) */
49: #define fd_drs fd_msr /* Data Rate Select Register (W) */
50: u_int8_t fd_fifo; /* Data (FIFO) register (R/W) */
51: u_int8_t fd_reserved;
52: u_int8_t fd_dir; /* Digital Input Register (R) */
53: #define fd_ccr fd_dir /* Configuration Control (W) */
54: };
55:
56: struct fdreg_72 {
57: u_int8_t fd_msr; /* Main Status Register (R) */
58: #if already_a_define
59: #define fd_drs fd_msr /* Data Rate Select Register (W) */
60: #endif
61: u_int8_t fd_fifo; /* Data (FIFO) register (R/W) */
62: };
63:
64: union fdreg {
65: struct fdreg_72 fun72;
66: struct fdreg_77 fun77;
67: };
68: #endif
69:
70: /* Data Select Register bits */
71: #define DRS_RESET 0x80
72: #define DRS_POWER 0x40
73: #define DRS_PLL 0x20
74: #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */
75: #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */
76: #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */
77: #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */
78:
79: /* Digital Output Register bits (modified on suns) */
80: #define FDO_DS 0x01 /* floppy device select (neg) */
81: #define FDO_FRST 0x04 /* floppy controller reset (neg) */
82: #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */
83: #define FDO_MOEN(n) ((1 << n) << 4) /* motor enable */
84: #define FDO_DEN 0x40 /* Density select */
85: #define FDO_EJ 0x80 /* Eject disk */
86:
87: /* Digital Input Register bits */
88: #define FDI_DCHG 0x80 /* diskette has been changed */
89:
90: /* XXX - find a place for these... */
91: #define NE7CMD_CFG 0x13
92: #define CFG_EIS 0x40
93: #define CFG_EFIFO 0x20
94: #define CFG_POLL 0x10
95: #define CFG_THRHLD_MASK 0x0f
96:
97: #define NE7CMD_LOCK 0x14
98: #define CFG_LOCK 0x80
99:
100: #define NE7CMD_MOTOR 0x0b
101: #define MOTOR_ON 0x80
102:
103: #define NE7CMD_DUMPREG 0x0e
104: #define NE7CMD_VERSION 0x10
105:
106: #define ST1_OVERRUN 0x10
107:
108: #define NE7_SPECIFY_NODMA 0x01
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