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2 | pj | 1 | /* Project: HARTIK 3.0 Sound Library */ |
2 | /* Description: Hard Real TIme Kernel for 8086 compatible */ |
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3 | /* Author: Luca Abeni */ |
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4 | /* Date: 5/12/1997 */ |
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5 | |||
6 | /* File: Blaster.C */ |
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7 | /* Revision: 3.0 */ |
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8 | |||
1063 | tullio | 9 | /* |
10 | * This program is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License as published by |
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12 | * the Free Software Foundation; either version 2 of the License, or |
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13 | * (at your option) any later version. |
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14 | * |
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15 | * This program is distributed in the hope that it will be useful, |
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 | * GNU General Public License for more details. |
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19 | * |
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20 | * You should have received a copy of the GNU General Public License |
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21 | * along with this program; if not, write to the Free Software |
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22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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23 | * |
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24 | */ |
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25 | |||
2 | pj | 26 | /* Sound Blaster 16 specific functions and structures */ |
27 | |||
28 | #include <kernel/kern.h> |
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29 | |||
30 | #include <drivers/dma.h> |
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31 | #include "sbio.h" |
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32 | #include "blaster.h" |
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33 | #include <drivers/sound.h> |
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34 | #include <semaphore.h> |
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35 | |||
36 | struct sb_device sb_dev; |
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37 | struct sound_buffer buff_des; |
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38 | |||
39 | void sbmixer_reset(void) |
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40 | { |
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41 | sbmixer_write(sb_dev.BaseAddress, MIXER_RESET, 0); |
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42 | } |
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43 | |||
44 | /* Enable or disable specified mixer inputs */ |
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45 | void sbmixer_setinput(BYTE in, BYTE onoff) |
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46 | { |
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47 | BYTE inreg; |
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48 | |||
49 | inreg = sbmixer_read(sb_dev.BaseAddress, MIXER_INCTRLEFT); |
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50 | if (onoff == ENABLE) |
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51 | inreg = inreg | in; |
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52 | else inreg = inreg & (!in); |
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53 | sbmixer_write(sb_dev.BaseAddress, MIXER_INCTRLEFT, inreg); |
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54 | inreg = sbmixer_read(sb_dev.BaseAddress, MIXER_INCTRRIGHT); |
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55 | if (onoff == ENABLE) |
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56 | inreg = inreg | in; |
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57 | else inreg = inreg & (!in); |
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58 | sbmixer_write(sb_dev.BaseAddress, MIXER_INCTRRIGHT, inreg); |
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59 | } |
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60 | |||
61 | /* Enable or disable specified mixer outputs */ |
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62 | void sbmixer_setoutput(BYTE in, BYTE onoff) |
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63 | { |
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64 | BYTE inreg; |
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65 | |||
66 | inreg = sbmixer_read(sb_dev.BaseAddress, MIXER_OUTCTR); |
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67 | if (onoff == ENABLE) |
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68 | inreg = inreg | in; |
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69 | else inreg = inreg & (~in); |
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70 | sbmixer_write(sb_dev.BaseAddress, MIXER_OUTCTR, inreg); |
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71 | } |
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72 | |||
73 | /* Set the output level */ |
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74 | void sbmixer_setmiclev(BYTE level) |
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75 | { |
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76 | BYTE levreg; |
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77 | |||
78 | levreg = sbmixer_read(sb_dev.BaseAddress, MIXER_MICLEV); |
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79 | levreg = (levreg & 0x07) | (level << 3); |
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80 | sbmixer_write(sb_dev.BaseAddress, MIXER_MICLEV, levreg); |
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81 | } |
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82 | |||
83 | /* Set the mixer input level */ |
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84 | void sbmixer_setingainlev(BYTE level) |
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85 | { |
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86 | BYTE gainreg; |
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87 | |||
88 | gainreg = sbmixer_read(sb_dev.BaseAddress, MIXER_IGCRIGHT); |
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89 | gainreg = (gainreg & 0x3F) | (level << 6); |
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90 | sbmixer_write(sb_dev.BaseAddress, MIXER_IGCRIGHT, gainreg); |
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91 | gainreg = sbmixer_read(sb_dev.BaseAddress, MIXER_IGCLEFT); |
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92 | gainreg = (gainreg & 0x3F) | (level << 6); |
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93 | sbmixer_write(sb_dev.BaseAddress, MIXER_IGCLEFT, gainreg); |
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94 | } |
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95 | |||
96 | /* Enable or disable the mixer input Automatic Gain Control */ |
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97 | void sbmixer_setAGC(BYTE onoff) |
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98 | { |
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99 | BYTE reg; |
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100 | |||
101 | reg = sbmixer_read(sb_dev.BaseAddress, MIXER_AGC); |
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102 | if (onoff == ENABLE) |
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103 | reg = reg & 0xFE; |
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104 | else reg = reg | 0x01; |
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105 | sbmixer_write(sb_dev.BaseAddress, MIXER_AGC, reg); |
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106 | } |
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107 | |||
108 | int sb_init(void) |
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109 | { |
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110 | BYTE cfgreg; |
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111 | |||
112 | /* Is there a SB16 in the system? */ |
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113 | if((sb_dev.BaseAddress = sb_probe()) == 0) |
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114 | return ENODEV; |
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115 | |||
116 | /* Yes: get the DSP version and the used interrupt and DMA Channels */ |
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117 | sbdsp_write(sb_dev.BaseAddress, DSPCMD_GETVER); |
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118 | sb_dev.DSPVersionM = sbdsp_read(sb_dev.BaseAddress); |
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119 | sb_dev.DSPVersionm = sbdsp_read(sb_dev.BaseAddress); |
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120 | cfgreg = sbmixer_read(sb_dev.BaseAddress, MIXER_IRQREG); |
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121 | if (cfgreg & 1) |
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122 | sb_dev.IntLine = 2; |
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123 | if (cfgreg & 2) |
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124 | sb_dev.IntLine = 5; |
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125 | if (cfgreg & 4) |
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126 | sb_dev.IntLine = 7; |
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127 | if (cfgreg & 8) |
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128 | sb_dev.IntLine = 10; |
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129 | |||
130 | // force irq line if you use a SB PNP!!! |
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131 | // sb_dev.IntLine = 9; |
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132 | |||
133 | cfgreg = sbmixer_read(sb_dev.BaseAddress, MIXER_DMAREG); |
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134 | if (cfgreg & 1) |
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135 | sb_dev.DMA8Channel= 0; |
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136 | if (cfgreg & 2) |
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137 | sb_dev.DMA8Channel = 1; |
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138 | if (cfgreg & 8) |
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139 | sb_dev.DMA8Channel = 3; |
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140 | if (cfgreg & 0x20) |
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141 | sb_dev.DMA16Channel = 5; |
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142 | if (cfgreg & 0x40) |
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143 | sb_dev.DMA16Channel = 6; |
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144 | if (cfgreg & 0x80) |
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145 | sb_dev.DMA16Channel = 7; |
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146 | |||
147 | return 0; |
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148 | } |
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149 | |||
150 | /* Show the card informations */ |
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151 | void sb_show(void) |
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152 | { |
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153 | cprintf(" BaseAddress: %x\n", (unsigned int)sb_dev.BaseAddress); |
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154 | cprintf(" Interrupt Line: %d\n", sb_dev.IntLine); |
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155 | cprintf(" DSP Version: %d.%d\n", sb_dev.DSPVersionM, sb_dev.DSPVersionm); |
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156 | cprintf(" 8 bit DMA channel: %d\n", sb_dev.DMA8Channel); |
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157 | cprintf(" 16 bit DMA channel: %d\n", sb_dev.DMA16Channel); |
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158 | } |
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159 | |||
160 | void sb_spkon (void) |
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161 | { |
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162 | sbdsp_write(sb_dev.BaseAddress, DSPCMD_SPKON); |
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163 | } |
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164 | |||
165 | void sb_spkoff (void) |
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166 | { |
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167 | sbdsp_write(sb_dev.BaseAddress, DSPCMD_SPKOFF); |
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168 | } |
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169 | |||
170 | /* Set the DMA sampling/playing rate */ |
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171 | void sb_setrate (int sps, BYTE i_o) |
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172 | { |
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173 | BYTE cmd; |
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174 | |||
175 | if (i_o == IN) cmd = DSPCMD_SETINRATE; |
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176 | else cmd = DSPCMD_SETOUTRATE; |
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177 | sbdsp_write(sb_dev.BaseAddress, cmd); |
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178 | /* MSB...*/ |
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179 | sbdsp_write(sb_dev.BaseAddress, (sps >> 8) & 0xFF); |
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180 | /*...and then LSB */ |
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181 | sbdsp_write(sb_dev.BaseAddress, sps & 0xFF); |
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182 | } |
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183 | |||
184 | /* Start an 8 bit sampling/playing operation */ |
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185 | void sb_dmaop(BYTE i_o) |
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186 | { |
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187 | DWORD len; |
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188 | BYTE cmd; |
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189 | BYTE *buff; |
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190 | |||
191 | buff = buff_des.sound_dma->p; |
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192 | len = buff_des.sound_dma->len; |
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193 | cmd = DSPCMD_8BITIO; |
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194 | |||
195 | /* Stop any previous operation and reset the DMAC */ |
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196 | dma_stop(sb_dev.DMA8Channel); |
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197 | dma_reset(); |
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198 | /* Prepare the DMAC for the operation */ |
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199 | if (i_o == OUT) { |
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200 | cmd |= SBIO_OUT; |
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201 | dma_setmode(sb_dev.DMA8Channel, 0x48); |
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202 | } else { |
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203 | cmd |= SBIO_IN; |
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204 | dma_setmode(sb_dev.DMA8Channel, 0x44); |
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205 | } |
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206 | dma_setbuff(sb_dev.DMA8Channel, buff, len); |
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207 | dma_start(sb_dev.DMA8Channel); |
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208 | /*...and start it!!! */ |
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209 | sbdsp_write(sb_dev.BaseAddress, cmd); |
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210 | sbdsp_write(sb_dev.BaseAddress, IOMODE_UNSIGNED | IOMODE_MONO); |
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211 | /* LSB...*/ |
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212 | sbdsp_write(sb_dev.BaseAddress, (BYTE)(len & 0xFF)); |
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213 | /*...and then MSB */ |
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214 | sbdsp_write(sb_dev.BaseAddress, (BYTE)((len >> 8) & 0xFF)); |
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215 | } |
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216 | |||
217 | /* Start a 16 bit sampling/playing operation */ |
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218 | void sb_dma16op(BYTE i_o) |
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219 | { |
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220 | DWORD len; |
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221 | BYTE cmd; |
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222 | BYTE *buff; |
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223 | |||
224 | buff = buff_des.sound_dma->p; |
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225 | len = buff_des.sound_dma->len; |
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226 | cmd = DSPCMD_16BITIO; |
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227 | |||
228 | /* Stop any previous operation and reset the DMAC */ |
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229 | dma16_stop(sb_dev.DMA16Channel); |
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230 | dma16_reset(); |
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231 | if (i_o == OUT) { |
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232 | cmd |= SBIO_OUT; |
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233 | dma16_setmode(sb_dev.DMA16Channel, 0x48); |
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234 | } else { |
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235 | cmd |= SBIO_IN; |
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236 | dma16_setmode(sb_dev.DMA16Channel, 0x44); |
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237 | } |
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238 | dma16_setbuff(sb_dev.DMA16Channel, buff, len); |
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239 | dma16_start(sb_dev.DMA16Channel); |
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240 | /*...and start it!!! */ |
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241 | sbdsp_write(sb_dev.BaseAddress, cmd); |
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242 | sbdsp_write(sb_dev.BaseAddress, IOMODE_SIGNED | IOMODE_MONO); |
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243 | /* LSB...*/ |
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244 | sbdsp_write(sb_dev.BaseAddress, (BYTE)(len & 0xFF)); |
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245 | /*...and then MSB */ |
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246 | sbdsp_write(sb_dev.BaseAddress, (BYTE)((len >> 8) & 0xFF)); |
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247 | } |
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248 | |||
249 | /* Start an 8 bit sampling/playing operation using double buffer */ |
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250 | void sb_dmabuffop(BYTE i_o) |
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251 | { |
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252 | DWORD len; |
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253 | BYTE cmd; |
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254 | struct dma_buff *buff; |
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255 | |||
256 | buff = buff_des.sound_dma; |
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257 | cmd = DSPCMD_8BITIO | SBIO_AUTOINIT; |
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258 | len = buff->len; |
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259 | if (i_o == OUT) { |
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260 | cmd |= SBIO_OUT; |
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261 | dma_out(sb_dev.DMA8Channel, buff); |
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262 | } else { |
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263 | cmd |= SBIO_IN; |
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264 | dma_in(sb_dev.DMA8Channel, buff); |
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265 | } |
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266 | sbdsp_write(sb_dev.BaseAddress, cmd); |
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267 | sbdsp_write(sb_dev.BaseAddress, IOMODE_UNSIGNED | IOMODE_MONO); |
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268 | sbdsp_write(sb_dev.BaseAddress, (BYTE)(((buff->dma_bufflen >> 1) - 1) & 0xFF)); |
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269 | sbdsp_write(sb_dev.BaseAddress, (BYTE)((((buff->dma_bufflen >> 1) - 1) >> 8) & 0xFF)); |
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270 | } |
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271 | |||
272 | /* Start a 16 bit sampling/playing operation using double buffer */ |
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273 | void sb_dma16buffop(BYTE i_o) |
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274 | { |
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275 | DWORD len; |
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276 | BYTE cmd; |
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277 | struct dma_buff *buff; |
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278 | |||
279 | buff = buff_des.sound_dma; |
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280 | cmd = DSPCMD_16BITIO | SBIO_AUTOINIT; |
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281 | len = buff->len; |
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282 | if (i_o == OUT) { |
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283 | cmd |= SBIO_OUT; |
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284 | dma16_out(sb_dev.DMA16Channel, buff); |
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285 | } else { |
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286 | cmd |= SBIO_IN; |
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287 | dma16_in(sb_dev.DMA16Channel, buff); |
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288 | } |
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289 | sbdsp_write(sb_dev.BaseAddress, cmd); |
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290 | sbdsp_write(sb_dev.BaseAddress, IOMODE_SIGNED | IOMODE_MONO); |
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291 | sbdsp_write(sb_dev.BaseAddress, (BYTE)(((buff->dma_bufflen >> 2) - 1) & 0xFF)); |
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292 | sbdsp_write(sb_dev.BaseAddress, (BYTE)((((buff->dma_bufflen >> 2) - 1) >> 8) & 0xFF)); |
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293 | } |
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294 | |||
295 | void sb_stopdsp(BYTE bit) |
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296 | { |
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297 | if (bit == 8) |
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298 | sbdsp_write(sb_dev.BaseAddress, DSPCMD_EXIT8); |
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299 | else if (bit == 16) |
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300 | sbdsp_write(sb_dev.BaseAddress, DSPCMD_EXIT16); |
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301 | else cprintf("How many bits?\n"); |
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302 | } |
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303 | |||
304 | /* Sound Blaster 16 interrupt's Fast Handler */ |
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305 | void sb_handler(int n) |
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306 | { |
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307 | switch(sbmixer_read(sb_dev.BaseAddress, MIXER_INTSTATUS) & 3) { |
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308 | case 1: ll_in(sb_dev.BaseAddress + ACK8); |
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309 | break; |
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310 | case 2: ll_in(sb_dev.BaseAddress + ACK16); |
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311 | break; |
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312 | default: cprintf("Unknown int: %x\n", sbmixer_read(sb_dev.BaseAddress, 0x82)); |
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313 | } |
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314 | } |
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315 | |||
316 | /* |
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317 | This process is activated when the sound card generates an interrupt: |
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318 | it calls the function to copy data from/to the sound buffer (this function |
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319 | can be the double buffering-function or the user's self-buffering function |
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320 | */ |
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321 | TASK sb_proc(void) |
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322 | { |
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323 | for(;;) { |
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324 | /* call the copy function */ |
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325 | switch(buff_des.fun(buff_des.sound_dma)) { |
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326 | /* the operation will finish with the next interrupt */ |
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327 | case 1: buff_des.fun = dummyfun1; |
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328 | break; |
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329 | /* operation finished */ |
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330 | case 2: dummyfun2(buff_des.sound_dma); |
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331 | buff_des.fun = dummyfun2; |
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332 | break; |
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333 | default: break; |
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334 | } |
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335 | task_endcycle(); |
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336 | } |
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337 | return 0; |
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338 | } |
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339 | |||
340 | /* PIO mode sampling process */ |
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341 | TASK proc_sample() |
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342 | { |
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343 | DWORD i; |
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344 | |||
345 | sbdsp_reset(sb_dev.BaseAddress); |
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346 | for(i = 0; i < buff_des.sound_dma->len; i++) { |
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347 | sbdsp_write(sb_dev.BaseAddress, DSPCMD_DIRECTIN); |
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348 | buff_des.sound_dma->p[i] = sbdsp_read(sb_dev.BaseAddress); |
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349 | task_endcycle(); |
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350 | } |
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351 | /* Operation finished: if it was blocking signal */ |
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352 | if (buff_des.synch) sem_post(&buff_des.synchr); |
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353 | //task_abort(); |
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354 | return 0; |
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355 | } |
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356 | |||
357 | /* PIO mode playing process */ |
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358 | TASK proc_play() |
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359 | { |
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360 | DWORD i; |
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361 | |||
362 | sbdsp_reset(sb_dev.BaseAddress); |
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363 | for(i = 0; i < buff_des.sound_dma->len; i++) { |
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364 | sbdsp_write(sb_dev.BaseAddress, DSPCMD_DIRECTOUT); |
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365 | sbdsp_write(sb_dev.BaseAddress, buff_des.sound_dma->p[i]); |
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366 | task_endcycle(); |
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367 | } |
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368 | /* Operation finished: if it was blocking signal */ |
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369 | if (buff_des.synch) sem_post(&buff_des.synchr); |
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370 | //task_abort(); |
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371 | return 0; |
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372 | } |