180 lines
5.8 KiB
C
180 lines
5.8 KiB
C
#ifndef SB16_H
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#define SB16_H
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#include <minix/sound.h>
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#include <minix/audio_fw.h>
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#if DEBUG
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#define Dprint(args) printf args
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#else
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#define Dprint(args)
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#endif
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#define AUDIO 0
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#define MIXER 1
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#define SB_TIMEOUT 32000 /* timeout count */
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/* IRQ, base address and DMA channels */
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#define SB_IRQ 7
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#define SB_BASE_ADDR 0x220 /* 0x210, 0x220, 0x230, 0x240,
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* 0x250, 0x260, 0x280
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*/
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#define SB_DMA_8 1 /* 0, 1, 3 */
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#define SB_DMA_16 5 /* 5, 6, 7 */
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/* Some defaults for the DSP */
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#define DEFAULT_SPEED 22050 /* Sample rate */
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#define DEFAULT_BITS 8 /* Nr. of bits */
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#define DEFAULT_SIGN 0 /* 0 = unsigned, 1 = signed */
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#define DEFAULT_STEREO 0 /* 0 = mono, 1 = stereo */
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/* DMA port addresses */
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#define DMA8_ADDR ((SB_DMA_8 & 3) << 1) + 0x00
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#define DMA8_COUNT ((SB_DMA_8 & 3) << 1) + 0x01
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#define DMA8_MASK 0x0A
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#define DMA8_MODE 0x0B
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#define DMA8_CLEAR 0x0C
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/* If after this preprocessing stuff DMA8_PAGE is not defined
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* the 8-bit DMA channel specified is not valid
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*/
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#if SB_DMA_8 == 0
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# define DMA8_PAGE 0x87
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#else
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# if SB_DMA_8 == 1
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# define DMA8_PAGE 0x83
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# else
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# if SB_DMA_8 == 3
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# define DMA8_PAGE 0x82
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# endif
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# endif
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#endif
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#define DMA16_ADDR ((SB_DMA_16 & 3) << 2) + 0xC0
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#define DMA16_COUNT ((SB_DMA_16 & 3) << 2) + 0xC2
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#define DMA16_MASK 0xD4
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#define DMA16_MODE 0xD6
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#define DMA16_CLEAR 0xD8
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/* If after this preprocessing stuff DMA16_PAGE is not defined
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* the 16-bit DMA channel specified is not valid
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*/
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#if SB_DMA_16 == 5
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# define DMA16_PAGE 0x8B
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#else
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# if SB_DMA_16 == 6
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# define DMA16_PAGE 0x89
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# else
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# if SB_DMA_16 == 7
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# define DMA16_PAGE 0x8A
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# endif
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# endif
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#endif
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/* DMA modes */
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#define DMA16_AUTO_PLAY 0x58 + (SB_DMA_16 & 3)
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#define DMA16_AUTO_REC 0x54 + (SB_DMA_16 & 3)
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#define DMA8_AUTO_PLAY 0x58 + SB_DMA_8
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#define DMA8_AUTO_REC 0x54 + SB_DMA_8
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/* IO ports for soundblaster */
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#define DSP_RESET 0x6 + SB_BASE_ADDR
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#define DSP_READ 0xA + SB_BASE_ADDR
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#define DSP_WRITE 0xC + SB_BASE_ADDR
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#define DSP_COMMAND 0xC + SB_BASE_ADDR
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#define DSP_STATUS 0xC + SB_BASE_ADDR
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#define DSP_DATA_AVL 0xE + SB_BASE_ADDR
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#define DSP_DATA16_AVL 0xF + SB_BASE_ADDR
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#define MIXER_REG 0x4 + SB_BASE_ADDR
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#define MIXER_DATA 0x5 + SB_BASE_ADDR
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#define OPL3_LEFT 0x0 + SB_BASE_ADDR
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#define OPL3_RIGHT 0x2 + SB_BASE_ADDR
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#define OPL3_BOTH 0x8 + SB_BASE_ADDR
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/* DSP Commands */
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#define DSP_INPUT_RATE 0x42 /* set input sample rate */
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#define DSP_OUTPUT_RATE 0x41 /* set output sample rate */
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#define DSP_CMD_SPKON 0xD1 /* set speaker on */
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#define DSP_CMD_SPKOFF 0xD3 /* set speaker off */
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#define DSP_CMD_DMA8HALT 0xD0 /* halt DMA 8-bit operation */
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#define DSP_CMD_DMA8CONT 0xD4 /* continue DMA 8-bit operation */
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#define DSP_CMD_DMA16HALT 0xD5 /* halt DMA 16-bit operation */
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#define DSP_CMD_DMA16CONT 0xD6 /* continue DMA 16-bit operation */
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#define DSP_GET_VERSION 0xE1 /* get version number of DSP */
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#define DSP_CMD_8BITAUTO_IN 0xCE /* 8 bit auto-initialized input */
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#define DSP_CMD_8BITAUTO_OUT 0xC6 /* 8 bit auto-initialized output */
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#define DSP_CMD_16BITAUTO_IN 0xBE /* 16 bit auto-initialized input */
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#define DSP_CMD_16BITAUTO_OUT 0xB6 /* 16 bit auto-initialized output */
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#define DSP_CMD_IRQREQ8 0xF2 /* Interrupt request 8 bit */
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#define DSP_CMD_IRQREQ16 0xF3 /* Interrupt request 16 bit */
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/* DSP Modes */
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#define DSP_MODE_MONO_US 0x00 /* Mono unsigned */
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#define DSP_MODE_MONO_S 0x10 /* Mono signed */
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#define DSP_MODE_STEREO_US 0x20 /* Stereo unsigned */
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#define DSP_MODE_STEREO_S 0x30 /* Stereo signed */
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/* MIXER commands */
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#define MIXER_RESET 0x00 /* Reset */
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#define MIXER_DAC_LEVEL 0x04 /* Used for detection only */
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#define MIXER_MASTER_LEFT 0x30 /* Master volume left */
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#define MIXER_MASTER_RIGHT 0x31 /* Master volume right */
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#define MIXER_DAC_LEFT 0x32 /* Dac level left */
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#define MIXER_DAC_RIGHT 0x33 /* Dac level right */
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#define MIXER_FM_LEFT 0x34 /* Fm level left */
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#define MIXER_FM_RIGHT 0x35 /* Fm level right */
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#define MIXER_CD_LEFT 0x36 /* Cd audio level left */
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#define MIXER_CD_RIGHT 0x37 /* Cd audio level right */
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#define MIXER_LINE_LEFT 0x38 /* Line in level left */
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#define MIXER_LINE_RIGHT 0x39 /* Line in level right */
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#define MIXER_MIC_LEVEL 0x3A /* Microphone level */
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#define MIXER_PC_LEVEL 0x3B /* Pc speaker level */
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#define MIXER_OUTPUT_CTRL 0x3C /* Output control */
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#define MIXER_IN_LEFT 0x3D /* Input control left */
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#define MIXER_IN_RIGHT 0x3E /* Input control right */
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#define MIXER_GAIN_IN_LEFT 0x3F /* Input gain control left */
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#define MIXER_GAIN_IN_RIGHT 0x40 /* Input gain control right */
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#define MIXER_GAIN_OUT_LEFT 0x41 /* Output gain control left */
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#define MIXER_GAIN_OUT_RIGHT 0x42 /* Output gain control rigth */
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#define MIXER_AGC 0x43 /* Automatic gain control */
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#define MIXER_TREBLE_LEFT 0x44 /* Treble left */
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#define MIXER_TREBLE_RIGHT 0x45 /* Treble right */
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#define MIXER_BASS_LEFT 0x46 /* Bass left */
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#define MIXER_BASS_RIGHT 0x47 /* Bass right */
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#define MIXER_SET_IRQ 0x80 /* Set irq number */
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#define MIXER_SET_DMA 0x81 /* Set DMA channels */
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#define MIXER_IRQ_STATUS 0x82 /* Irq status */
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/* Mixer constants */
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#define MIC 0x01 /* Microphone */
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#define CD_RIGHT 0x02
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#define CD_LEFT 0x04
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#define LINE_RIGHT 0x08
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#define LINE_LEFT 0x10
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#define FM_RIGHT 0x20
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#define FM_LEFT 0x40
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/* DSP constants */
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#define DSP_MAX_SPEED 44100 /* Max sample speed in KHz */
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#define DSP_MIN_SPEED 4000 /* Min sample speed in KHz */
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/* Number of bytes you can DMA before hitting a 64K boundary: */
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#define dma_bytes_left(phys) \
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((unsigned) (sizeof(int) == 2 ? 0 : 0x10000) - (unsigned) ((phys) & 0xFFFF))
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int dsp_command(int value);
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int sb16_inb(int port);
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void sb16_outb(int port, int value);
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#endif /* SB16_H */
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