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 41 auvia_reg_read_8(device_config *config, int regno) 42 { 43 return pci->read_io_8(config->nabmbar + regno); 44 } 45 46 uint16 47 auvia_reg_read_16(device_config *config, int regno) 48 { 49 return pci->read_io_16(config->nabmbar + regno); 50 } 51 52 uint32 53 auvia_reg_read_32(device_config *config, int regno) 54 { 55 return pci->read_io_32(config->nabmbar + regno); 56 } 57 58 void 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 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 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 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 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 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 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