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