1 /*
2 * Auvia BeOS Driver for Via VT82xx Southbridge audio
3 *
4 * Copyright (c) 2003, Jerome Duval (jerome.duval@free.fr)
5 *
6 * Original code : BeOS Driver for Intel ICH AC'97 Link interface
7 * Copyright (c) 2002, Marcus Overhagen <marcus@overhagen.de>
8 *
9 * All rights reserved.
10 * Redistribution and use in source and binary forms, with or without modification,
11 * are permitted provided that the following conditions are met:
12 *
13 * - Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * - Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
25 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
28 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 */
31 #include <KernelExport.h>
32 #include <OS.h>
33 #include "io.h"
34 #include "auviareg.h"
35 #include "debug.h"
36 #include <PCI.h>
37
38 extern pci_module_info *pci;
39
40 uint8
auvia_reg_read_8(device_config * config,int regno)41 auvia_reg_read_8(device_config *config, int regno)
42 {
43 return pci->read_io_8(config->nabmbar + regno);
44 }
45
46 uint16
auvia_reg_read_16(device_config * config,int regno)47 auvia_reg_read_16(device_config *config, int regno)
48 {
49 return pci->read_io_16(config->nabmbar + regno);
50 }
51
52 uint32
auvia_reg_read_32(device_config * config,int regno)53 auvia_reg_read_32(device_config *config, int regno)
54 {
55 return pci->read_io_32(config->nabmbar + regno);
56 }
57
58 void
auvia_reg_write_8(device_config * config,int regno,uint8 value)59 auvia_reg_write_8(device_config *config, int regno, uint8 value)
60 {
61 pci->write_io_8(config->nabmbar + regno, value);
62 }
63
64 void
auvia_reg_write_16(device_config * config,int regno,uint16 value)65 auvia_reg_write_16(device_config *config, int regno, uint16 value)
66 {
67 pci->write_io_16(config->nabmbar + regno, value);
68 }
69
70 void
auvia_reg_write_32(device_config * config,int regno,uint32 value)71 auvia_reg_write_32(device_config *config, int regno, uint32 value)
72 {
73 pci->write_io_32(config->nabmbar + regno, value);
74 }
75
76 /* codec */
77
78 #define AUVIA_TIMEOUT 200
79
80 static int
auvia_codec_waitready(device_config * config)81 auvia_codec_waitready(device_config *config)
82 {
83 int i;
84
85 /* poll until codec not busy */
86 for(i = 0; (i < AUVIA_TIMEOUT) && (pci->read_io_32(config->nabmbar
87 + AUVIA_CODEC_CTL) & AUVIA_CODEC_BUSY) ; i++)
88 spin(1);
89 if(i>=AUVIA_TIMEOUT) {
90 //PRINT(("codec busy\n"));
91 return B_ERROR;
92 }
93 return B_OK;
94 }
95
96 static int
auvia_codec_waitvalid(device_config * config)97 auvia_codec_waitvalid(device_config *config)
98 {
99 int i;
100
101 /* poll until codec valid */
102 for(i = 0; (i < AUVIA_TIMEOUT) && !(pci->read_io_32(config->nabmbar
103 + AUVIA_CODEC_CTL) & AUVIA_CODEC_PRIVALID) ; i++)
104 spin(1);
105 if(i>=AUVIA_TIMEOUT) {
106 //PRINT(("codec invalid\n"));
107 return B_ERROR;
108 }
109 return B_OK;
110 }
111
112 uint16
auvia_codec_read(device_config * config,int regno)113 auvia_codec_read(device_config *config, int regno)
114 {
115 if(auvia_codec_waitready(config)!=B_OK) {
116 PRINT(("codec busy (1)\n"));
117 return -1;
118 }
119 pci->write_io_32(config->nabmbar + AUVIA_CODEC_CTL,
120 AUVIA_CODEC_PRIVALID | AUVIA_CODEC_READ | AUVIA_CODEC_INDEX(regno));
121
122 if(auvia_codec_waitready(config)!=B_OK) {
123 PRINT(("codec busy (2)\n"));
124 return -1;
125 }
126 if(auvia_codec_waitvalid(config)!=B_OK) {
127 PRINT(("codec invalid (3)\n"));
128 return -1;
129 }
130
131 return pci->read_io_16(config->nabmbar + AUVIA_CODEC_CTL);
132 }
133
134 void
auvia_codec_write(device_config * config,int regno,uint16 value)135 auvia_codec_write(device_config *config, int regno, uint16 value)
136 {
137 if(auvia_codec_waitready(config)!=B_OK) {
138 PRINT(("codec busy (4)\n"));
139 return;
140 }
141 pci->write_io_32(config->nabmbar + AUVIA_CODEC_CTL,
142 AUVIA_CODEC_PRIVALID | AUVIA_CODEC_INDEX(regno) | value);
143 }
144