--- /dev/null
+/* MikMod sound library
+ (c) 1998, 1999 Miodrag Vallat and others - see file AUTHORS for
+ complete list.
+
+ This library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of
+ the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA.
+*/
+
+/*==============================================================================
+
+ $Id$
+
+ SoundBlaster and compatible soundcards definitions
+
+==============================================================================*/
+
+#ifndef __DOSSB_H__
+#define __DOSSB_H__
+
+#include "dosdma.h"
+#include "dosirq.h"
+
+#define SB_FM_LEFT_STATUS (sb.port + 0x00) /* (r) Left FM status */
+#define SB_FM_LEFT_REGSEL (sb.port + 0x00) /* (w) Left FM register select */
+#define SB_FM_LEFT_DATA (sb.port + 0x01) /* (w) Left FM data */
+#define SB_FM_RIGHT_STATUS (sb.port + 0x02) /* (r) Right FM status */
+#define SB_FM_RIGHT_REGSEL (sb.port + 0x02) /* (w) Right FM register select */
+#define SB_FM_RIGHT_DATA (sb.port + 0x03) /* (w) Right FM data */
+#define SB_MIXER_REGSEL (sb.port + 0x04) /* (w) Mixer register select */
+#define SB_MIXER_DATA (sb.port + 0x05) /* (rw)Mixer data */
+#define SB_DSP_RESET (sb.port + 0x06) /* (w) DSP reset */
+#define SB_FM_STATUS (sb.port + 0x08) /* (r) FM status */
+#define SB_FM_REGSEL (sb.port + 0x08) /* (w) FM register select */
+#define SB_FM_DATA (sb.port + 0x09) /* (w) FM data */
+#define SB_DSP_DATA_IN (sb.port + 0x0a) /* (r) DSP data input */
+#define SB_DSP_DATA_OUT (sb.port + 0x0c) /* (w) DSP data output */
+#define SB_DSP_DATA_OUT_STATUS (sb.port + 0x0c) /* (r) DSP data output status */
+#define SB_DSP_TIMER_IRQ (sb.port + 0x0d) /* (r) clear timer IRQ? */
+#define SB_DSP_DATA_IN_STATUS (sb.port + 0x0e) /* (r) DSP data input status */
+#define SB_DSP_DMA8_IRQ (sb.port + 0x0e) /* (r) Acknowledge 8-bit DMA transfer */
+#define SB_DSP_DMA16_IRQ (sb.port + 0x0f) /* (r) Acknowledge 16-bit DMA transfer */
+
+/* DSP commands */
+#define SBDSP_ASP_STATUS 0x03 /* ASP Status (SB16ASP) */
+#define SBDSP_STATUS_OLD 0x04 /* DSP Status (Obsolete) (SB2.0-Pro2) */
+#define SBDSP_DIRECT_DAC 0x10 /* Direct DAC, 8-bit (SB) */
+#define SBDSP_DMA_PCM8 0x14 /* DMA DAC, 8-bit (SB) */
+#define SBDSP_DMA_ADPCM2 0x16 /* DMA DAC, 2-bit ADPCM (SB) */
+#define SBDSP_DMA_ADPCM2R 0x17 /* DMA DAC, 2-bit ADPCM Reference (SB) */
+#define SBDSP_DMA_PCM8_AUTO 0x1C /* Auto-Initialize DMA DAC, 8-bit (SB2.0) */
+#define SBDSP_DMA_ADPCM2R_AUTO 0x1F /* Auto-Initialize DMA DAC, 2-bit ADPCM Reference (SB2.0) */
+#define SBDSP_DIRECT_ADC 0x20 /* Direct ADC, 8-bit (SB) */
+#define SBDSP_DMA_ADC8 0x24 /* DMA ADC, 8-bit (SB) */
+#define SBDSP_DIRECT_ADC8_BURST 0x28 /* Direct ADC, 8-bit (Burst) (SB-Pro2) */
+#define SBDSP_DMA_ADC8_AUTO 0x2C /* Auto-Initialize DMA ADC, 8-bit (SB2.0) */
+#define SBDSP_MIDI_READ_POLL 0x30 /* MIDI Read Poll (SB) */
+#define SBDSP_MIDI_READ_IRQ 0x31 /* MIDI Read Interrupt (SB) */
+#define SBDSP_MIDI_READ_TIME 0x32 /* MIDI Read Timestamp Poll (SB???) */
+#define SBDSP_MIDI_READ_TIME_IRQ 0x33 /* MIDI Read Timestamp Interrupt (SB???) */
+#define SBDSP_MIDI_RW_POLL 0x34 /* MIDI Read Poll + Write Poll (UART) (SB2.0) */
+#define SBDSP_MIDI_RW_IRQ 0x35 /* MIDI Read Interrupt + Write Poll (UART) (SB2.0???) */
+#define SBDSP_MIDI_RW_TIME_IRQ 0x37 /* MIDI Read Timestamp Interrupt + Write Poll (UART) (SB2.0???) */
+#define SBDSP_MIDI_WRITE_POLL 0x38 /* MIDI Write Poll (SB) */
+#define SBDSP_SET_TIMING 0x40 /* Set Time Constant (SB) */
+#define SBDSP_SET_RATE 0x41 /* Set Sample Rate, Hz (SB16) */
+#define SBDSP_DMA_CONT8_AUTO 0x45 /* Continue Auto-Initialize DMA, 8-bit (SB16) */
+#define SBDSP_DMA_CONT16_AUTO 0x47 /* Continue Auto-Initialize DMA, 16-bit (SB16) */
+#define SBDSP_SET_DMA_BLOCK 0x48 /* Set DMA Block Size (SB2.0) */
+#define SBDSP_DMA_ADPCM4 0x74 /* DMA DAC, 4-bit ADPCM (SB) */
+#define SBDSP_DMA_ADPCM4_REF 0x75 /* DMA DAC, 4-bit ADPCM Reference (SB) */
+#define SBDSP_DMA_ADPCM26 0x76 /* DMA DAC, 2.6-bit ADPCM (SB) */
+#define SBDSP_DMA_ADPCM26_REF 0x77 /* DMA DAC, 2.6-bit ADPCM Reference (SB) */
+#define SBDSP_DMA_ADPCM4R_AUTO 0x7D /* Auto-Initialize DMA DAC, 4-bit ADPCM Reference (SB2.0) */
+#define SBDSP_DMA_ADPCM26R_AUTO 0x7F /* Auto-Initialize DMA DAC, 2.6-bit ADPCM Reference (SB2.0) */
+#define SBDSP_DISABLE_DAC 0x80 /* Silence DAC (SB) */
+#define SBDSP_HS_DMA_DAC8_AUTO 0x90 /* Auto-Initialize DMA DAC, 8-bit (High Speed) (SB2.0-Pro2) */
+#define SBDSP_HS_DMA_ADC8_AUTO 0x98 /* Auto-Initialize DMA ADC, 8-bit (High Speed) (SB2.0-Pro2) */
+#define SBDSP_STEREO_ADC_DIS 0xA0 /* Disable Stereo Input Mode (SBPro Only) */
+#define SBDSP_STEREO_ADC_ENA 0xA8 /* Enable Stereo Input Mode (SBPro Only) */
+#define SBDSP_DMA_GENERIC16 0xB0 /* Generic DAC/ADC DMA (16-bit) (SB16) */
+#define SBDSP_DMA_GENERIC8 0xC0 /* Generic DAC/ADC DMA (8-bit) (SB16) */
+#define SBDSP_DMA_HALT8 0xD0 /* Halt DMA Operation, 8-bit (SB) */
+#define SBDSP_SPEAKER_ENA 0xD1 /* Enable Speaker (SB) */
+#define SBDSP_SPEAKER_DIS 0xD3 /* Disable Speaker (SB) */
+#define SBDSP_DMA_CONT8 0xD4 /* Continue DMA Operation, 8-bit (SB) */
+#define SBDSP_DMA_HALT16 0xD5 /* Halt DMA Operation, 16-bit (SB16) */
+#define SBDSP_DMA_CONT16 0xD6 /* Continue DMA Operation, 16-bit (SB16) */
+#define SBDSP_SPEAKER_STATUS 0xD8 /* Speaker Status (SB) */
+#define SBDSP_DMA_EXIT16_AUTO 0xD9 /* Exit Auto-Initialize DMA Operation, 16-bit (SB16) */
+#define SBDSP_DMA_EXIT8_AUTO 0xDA /* Exit Auto-Initialize DMA Operation, 8-bit (SB2.0) */
+#define SBDSP_IDENTIFY 0xE0 /* DSP Identification (SB2.0) */
+#define SBDSP_VERSION 0xE1 /* DSP Version (SB) */
+#define SBDSP_COPYRIGHT 0xE3 /* DSP Copyright (SBPro2???) */
+#define SBDSP_WRITE_TEST 0xE4 /* Write Test Register (SB2.0) */
+#define SBDSP_READ_TEST 0xE8 /* Read Test Register (SB2.0) */
+#define SBDSP_SINE_GEN 0xF0 /* Sine Generator (SB) */
+#define SBDSP_AUX_STATUS_PRO 0xF1 /* DSP Auxiliary Status (Obsolete) (SB-Pro2) */
+#define SBDSP_GEN_IRQ8 0xF2 /* IRQ Request, 8-bit (SB) */
+#define SBDSP_GEN_IRQ16 0xF3 /* IRQ Request, 16-bit (SB16) */
+#define SBDSP_STATUS 0xFB /* DSP Status (SB16) */
+#define SBDSP_AUX_STATUS_16 0xFC /* DSP Auxiliary Status (SB16) */
+#define SBDSP_CMD_STATUS 0xFD /* DSP Command Status (SB16) */
+
+/* Mixer commands */
+#define SBMIX_RESET 0x00 /* Reset Write SBPro */
+#define SBMIX_STATUS 0x01 /* Status Read SBPro */
+#define SBMIX_MASTER_LEVEL1 0x02 /* Master Volume Read/Write SBPro Only */
+#define SBMIX_DAC_LEVEL 0x04 /* DAC Level Read/Write SBPro */
+#define SBMIX_FM_OUTPUT 0x06 /* FM Output Control Read/Write SBPro Only */
+#define SBMIX_MIC_LEVEL 0x0A /* Microphone Level Read/Write SBPro */
+#define SBMIX_INPUT_SELECT 0x0C /* Input/Filter Select Read/Write SBPro Only */
+#define SBMIX_OUTPUT_SELECT 0x0E /* Output/Stereo Select Read/Write SBPro Only */
+#define SBMIX_FM_LEVEL 0x22 /* Master Volume Read/Write SBPro */
+#define SBMIX_MASTER_LEVEL 0x26 /* FM Level Read/Write SBPro */
+#define SBMIX_CD_LEVEL 0x28 /* CD Audio Level Read/Write SBPro */
+#define SBMIX_LINEIN_LEVEL 0x2E /* Line In Level Read/Write SBPro */
+#define SBMIX_MASTER_LEVEL_L 0x30 /* Master Volume Left Read/Write SB16 */
+#define SBMIX_MASTER_LEVEL_R 0x31 /* Master Volume Right Read/Write SB16 */
+#define SBMIX_DAC_LEVEL_L 0x32 /* DAC Level Left Read/Write SB16 */
+#define SBMIX_DAC_LEVEL_R 0x33 /* DAC Level Right Read/Write SB16 */
+#define SBMIX_FM_LEVEL_L 0x34 /* FM Level Left Read/Write SB16 */
+#define SBMIX_FM_LEVEL_R 0x35 /* FM Level Right Read/Write SB16 */
+#define SBMIX_CD_LEVEL_L 0x36 /* CD Audio Level Left Read/Write SB16 */
+#define SBMIX_CD_LEVEL_R 0x37 /* CD Audio Level Right Read/Write SB16 */
+#define SBMIX_LINEIN_LEVEL_L 0x38 /* Line In Level Left Read/Write SB16 */
+#define SBMIX_LINEIN_LEVEL_R 0x39 /* Line In Level Right Read/Write SB16 */
+#define SBMIX_MIC_LEVEL_16 0x3A /* Microphone Level Read/Write SB16 */
+#define SBMIX_PCSPK_LEVEL 0x3B /* PC Speaker Level Read/Write SB16 */
+#define SBMIX_OUTPUT_CONTROL 0x3C /* Output Control Read/Write SB16 */
+#define SBMIX_INPUT_CONTROL_L 0x3D /* Input Control Left Read/Write SB16 */
+#define SBMIX_INPUT_CONTROL_R 0x3E /* Input Control Right Read/Write SB16 */
+#define SBMIX_INPUT_GAIN_L 0x3F /* Input Gain Control Left Read/Write SB16 */
+#define SBMIX_INPUT_GAIN_R 0x40 /* Input Gain Control Right Read/Write SB16 */
+#define SBMIX_OUTPUT_GAIN_L 0x41 /* Output Gain Control Left Read/Write SB16 */
+#define SBMIX_OUTPUT_GAIN_R 0x42 /* Output Gain Control Right Read/Write SB16 */
+#define SBMIX_AGC_CONTROL 0x43 /* Automatic Gain Control (AGC) Read/Write SB16 */
+#define SBMIX_TREBLE_L 0x44 /* Treble Left Read/Write SB16 */
+#define SBMIX_TREBLE_R 0x45 /* Treble Right Read/Write SB16 */
+#define SBMIX_BASS_L 0x46 /* Bass Left Read/Write SB16 */
+#define SBMIX_BASS_R 0x47 /* Bass Right Read/Write SB16 */
+#define SBMIX_IRQ_SELECT 0x80 /* IRQ Select Read/Write SB16 */
+#define SBMIX_DMA_SELECT 0x81 /* DMA Select Read/Write SB16 */
+#define SBMIX_IRQ_STATUS 0x82 /* IRQ Status Read SB16 */
+
+/* SB_DSP_DATA_OUT_STATUS and SB_DSP_DATA_IN_STATUS bits */
+#define SBM_DSP_READY 0x80
+
+/* SB_DSP_RESET / SBMIX_RESET */
+#define SBM_DSP_RESET 0x01
+
+/* SBMIX_OUTPUT_SELECT */
+#define SBM_MIX_STEREO 0x02
+#define SBM_MIX_FILTER 0x20
+
+/* SBDSP_DMA_GENERIC16/SBDSP_DMA_GENERIC8 */
+#define SBM_GENDAC_FIFO 0x02
+#define SBM_GENDAC_AUTOINIT 0x04
+#define SBM_GENDAC_ADC 0x08
+/* Second (mode) byte */
+#define SBM_GENDAC_SIGNED 0x10
+#define SBM_GENDAC_STEREO 0x20
+
+/* DSP version masks */
+#define SBVER_10 0x0100 /* Original SoundBlaster */
+#define SBVER_15 0x0105 /* SoundBlaster 1.5 */
+#define SBVER_20 0x0200 /* SoundBlaster 2.0 */
+#define SBVER_PRO 0x0300 /* SoundBlaster Pro */
+#define SBVER_PRO2 0x0301 /* SoundBlaster Pro 2 */
+#define SBVER_16 0x0400 /* SoundBlaster 16 */
+#define SBVER_AWE32 0x040c /* SoundBlaster AWE32 */
+
+typedef unsigned char boolean;
+
+#ifndef FALSE
+#define FALSE 0
+#define TRUE 1
+#endif
+
+/* Play mode bits */
+#define SBMODE_16BITS 0x0001
+#define SBMODE_STEREO 0x0002
+#define SBMODE_SIGNED 0x0004
+
+/* Mask for capabilities that never change */
+#define SBMODE_MASK (SBMODE_16BITS | SBMODE_STEREO)
+
+/* You can fill some members of this struct (i.e. port,irq,dma) before
+ * calling sb_detect() or sb_open()... this will ignore environment settings.
+ */
+typedef struct __sb_state_s {
+ boolean ok; /* Are structure contents valid? */
+ int port, aweport; /* sb/awe32 base port */
+ int irq; /* SoundBlaster IRQ */
+ int dma8, dma16; /* 8-bit and 16-bit DMAs */
+ int maxfreq_mono; /* Maximum discretization frequency / mono mode */
+ int maxfreq_stereo; /* Maximum discretization frequency / stereo mode */
+ unsigned short dspver; /* DSP version number */
+ struct irq_handle *irq_handle; /* The interrupt handler */
+ dma_buffer *dma_buff; /* Pre-allocated DMA buffer */
+ unsigned char caps; /* SoundBlaster capabilities (SBMODE_XXX) */
+ unsigned char mode; /* Current SB mode (SBMODE_XXX) */
+ boolean open; /* Whenever the card has been opened */
+ volatile int irqcount; /* Incremented on each IRQ... for diagnostics */
+ void (*timer_callback) (); /* Called TWICE per buffer play */
+} __sb_state;
+
+extern __sb_state sb;
+
+extern void __sb_wait();
+
+static inline boolean __sb_dsp_ready_in()
+{
+ int count;
+ for (count = 10000; count >= 0; count--)
+ if (inportb(SB_DSP_DATA_IN_STATUS) & SBM_DSP_READY)
+ return TRUE;
+ return FALSE;
+}
+
+static inline boolean __sb_dsp_ready_out()
+{
+ int count;
+ for (count = 10000; count >= 0; count--)
+ if ((inportb(SB_DSP_DATA_OUT_STATUS) & SBM_DSP_READY) == 0)
+ return TRUE;
+ return FALSE;
+}
+
+static inline void __sb_dsp_out(unsigned char reg)
+{
+ __sb_dsp_ready_out();
+ outportb(SB_DSP_DATA_OUT, reg);
+}
+
+static inline unsigned char __sb_dsp_in()
+{
+ __sb_dsp_ready_in();
+ return inportb(SB_DSP_DATA_IN);
+}
+
+static inline void __sb_dspreg_out(unsigned char reg, unsigned char val)
+{
+ __sb_dsp_out(reg);
+ __sb_dsp_out(val);
+}
+
+static inline void __sb_dspreg_outwlh(unsigned char reg, unsigned short val)
+{
+ __sb_dsp_out(reg);
+ __sb_dsp_out(val);
+ __sb_dsp_out(val >> 8);
+}
+
+static inline void __sb_dspreg_outwhl(unsigned char reg, unsigned short val)
+{
+ __sb_dsp_out(reg);
+ __sb_dsp_out(val >> 8);
+ __sb_dsp_out(val);
+}
+
+static inline unsigned char __sb_dspreg_in(unsigned char reg)
+{
+ __sb_dsp_out(reg);
+ return __sb_dsp_in();
+}
+
+static inline void __sb_dsp_ack_dma8()
+{
+ inportb(SB_DSP_DMA8_IRQ);
+}
+
+static inline void __sb_dsp_ack_dma16()
+{
+ inportb(SB_DSP_DMA16_IRQ);
+}
+
+static inline unsigned short __sb_dsp_version()
+{
+ unsigned short ver;
+ __sb_dsp_out(SBDSP_VERSION);
+ __sb_dsp_ready_in();
+ ver = ((unsigned short)__sb_dsp_in()) << 8;
+ ver |= __sb_dsp_in();
+ return ver;
+}
+
+static inline void __sb_mixer_out(unsigned char reg, unsigned char val)
+{
+ outportb(SB_MIXER_REGSEL, reg);
+ outportb(SB_MIXER_DATA, val);
+}
+
+static inline unsigned char __sb_mixer_in(unsigned char reg)
+{
+ outportb(SB_MIXER_REGSEL, reg);
+ return inportb(SB_MIXER_DATA);
+}
+
+/* Enable stereo transfers: sbpro mode only */
+static inline void __sb_stereo(boolean stereo)
+{
+ unsigned char val = __sb_mixer_in(SBMIX_OUTPUT_SELECT);
+ if (stereo)
+ val |= SBM_MIX_STEREO;
+ else
+ val &= ~SBM_MIX_STEREO;
+ __sb_mixer_out(SBMIX_OUTPUT_SELECT, val);
+}
+
+/* Detect whenever SoundBlaster is present and fill "sb" structure */
+extern boolean sb_detect();
+/* Reset SoundBlaster */
+extern void sb_reset();
+/* Start working with SoundBlaster */
+extern boolean sb_open();
+/* Finish working with SoundBlaster */
+extern boolean sb_close();
+/* Enable/disable speaker output */
+extern void sb_output(boolean enable);
+/* Start playing from DMA buffer in either 8/16 bit mono/stereo */
+extern boolean sb_start_dma(unsigned char mode, unsigned int freq);
+/* Stop playing from DMA buffer */
+extern void sb_stop_dma();
+/* Query current position/total size of the DMA buffer */
+extern void sb_query_dma(unsigned int *dma_size, unsigned int *dma_pos);
+
+#endif /* __DOSSB_H__ */
+
+/* ex:set ts=4: */
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