1 /* $OpenBSD: neoreg.h,v 1.2 2004/11/22 04:27:14 deraadt Exp $ */
2
3 /*
4 * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
5 * All rights reserved.
6 *
7 * Derived from the public domain Linux driver
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHERIN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD$
31 */
32
33 #ifndef _NM256_H_
34 #define _NM256_H_
35
36 /* The BIOS signature. */
37 #define NM_SIGNATURE 0x4e4d0000
38 /* Signature mask. */
39 #define NM_SIG_MASK 0xffff0000
40
41 /* Size of the second memory area. */
42 #define NM_PORT2_SIZE 4096
43
44 /* The base offset of the mixer in the second memory area. */
45 #define NM_MIXER_OFFSET 0x600
46
47 /* The maximum size of a coefficient entry. */
48 #define NM_MAX_COEFFICIENT 0x5000
49
50 /* The interrupt register. */
51 #define NM_INT_REG 0xa04
52 /* And its bits. */
53 #define NM_PLAYBACK_INT 0x40
54 #define NM_RECORD_INT 0x100
55 #define NM_MISC_INT_1 0x4000
56 #define NM_MISC_INT_2 0x1
57
58 /* The AV's "mixer ready" status bit and location. */
59 #define NM_MIXER_STATUS_OFFSET 0xa04
60 #define NM_MIXER_READY_MASK 0x0800
61
62 /*
63 * For the ZX. It uses the same interrupt register, but it holds 32
64 * bits instead of 16.
65 */
66 #define NM2_PLAYBACK_INT 0x10000
67 #define NM2_RECORD_INT 0x80000
68 #define NM2_MISC_INT_1 0x8
69 #define NM2_MISC_INT_2 0x2
70
71 /* The ZX's "mixer ready" status bit and location. */
72 #define NM2_MIXER_STATUS_OFFSET 0xa06
73 #define NM2_MIXER_READY_MASK 0x0800
74
75 /* The playback registers start from here. */
76 #define NM_PLAYBACK_REG_OFFSET 0x0
77 /* The record registers start from here. */
78 #define NM_RECORD_REG_OFFSET 0x200
79
80 /* The rate register is located 2 bytes from the start of the register area. */
81 #define NM_RATE_REG_OFFSET 2
82
83 /* Mono/stereo flag, number of bits on playback, and rate mask. */
84 #define NM_RATE_STEREO 1
85 #define NM_RATE_BITS_16 2
86 #define NM_RATE_MASK 0xf0
87
88 /* Playback enable register. */
89 #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1)
90 #define NM_PLAYBACK_ENABLE_FLAG 1
91 #define NM_PLAYBACK_ONESHOT 2
92 #define NM_PLAYBACK_FREERUN 4
93
94 /* Mutes the audio output. */
95 #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18)
96 #define NM_AUDIO_MUTE_LEFT 0x8000
97 #define NM_AUDIO_MUTE_RIGHT 0x0080
98 #define NM_AUDIO_MUTE_BOTH 0x8080
99
100 /* Recording enable register. */
101 #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
102 #define NM_RECORD_ENABLE_FLAG 1
103 #define NM_RECORD_FREERUN 2
104
105 #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4)
106 #define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10)
107 #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc)
108 #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8)
109
110 #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4)
111 #define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14)
112 #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc)
113 #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8)
114
115 #define NM_TOTAL_COEFF_COUNT 0x3158
116
117 #define NM_COEFF_SIZES 2*8
118
119 struct neo_firmware {
120 const u_int16_t coefficientSizes[NM_COEFF_SIZES];
121 const char coefficients[NM_TOTAL_COEFF_COUNT*4];
122 };
123
124
125 #endif