FreeBSD/Linux Kernel Cross Reference
sys/drivers/sb16/sb16.h

     #ifndef SB16_H
     #define SB16_H
     
     #include "../drivers.h"
     #include <sys/ioc_sound.h>
     #include <minix/sound.h>
     
     
     #define SB_TIMEOUT              32000   /* timeout count */
    
    /* IRQ, base address and DMA channels */
    #define SB_IRQ          7
    #define SB_BASE_ADDR    0x220           /* 0x210, 0x220, 0x230, 0x240,
                                             * 0x250, 0x260, 0x280        
                                             */
    #define SB_DMA_8        1               /* 0, 1, 3 */
    #define SB_DMA_16       5               /* 5, 6, 7 */
    #if _WORD_SIZE == 2
    #define DMA_SIZE        8192            /* Dma buffer MUST BE MULTIPLE OF 2 */
    #else
    #define DMA_SIZE        (64 * 1024)             /* Dma buffer MUST BE MULTIPLE OF 2 */
    #endif
    
    /* Some defaults for the DSP */
    #define DEFAULT_SPEED           22050      /* Sample rate */
    #define DEFAULT_BITS            8          /* Nr. of bits */
    #define DEFAULT_SIGN            0          /* 0 = unsigned, 1 = signed */
    #define DEFAULT_STEREO          0          /* 0 = mono, 1 = stereo */
    
    /* DMA port addresses */
    #define DMA8_ADDR       ((SB_DMA_8 & 3) << 1) + 0x00
    #define DMA8_COUNT      ((SB_DMA_8 & 3) << 1) + 0x01 
    #define DMA8_MASK       0x0A
    #define DMA8_MODE       0x0B
    #define DMA8_CLEAR      0x0C
    
    
    /* If after this preprocessing stuff DMA8_PAGE is not defined
     * the 8-bit DMA channel specified is not valid
     */
    #if SB_DMA_8 == 0
    #  define DMA8_PAGE     0x87    
    #else 
    #  if SB_DMA_8 == 1
    #    define DMA8_PAGE   0x83    
    #  else 
    #    if SB_DMA_8 == 3
    #      define DMA8_PAGE 0x82
    #    endif
    #  endif
    #endif
    
            
    #define DMA16_ADDR      ((SB_DMA_16 & 3) << 2) + 0xC0
    #define DMA16_COUNT     ((SB_DMA_16 & 3) << 2) + 0xC2 
    #define DMA16_MASK      0xD4
    #define DMA16_MODE      0xD6
    #define DMA16_CLEAR     0xD8
    
    
    /* If after this preprocessing stuff DMA16_PAGE is not defined
     * the 16-bit DMA channel specified is not valid
     */
    #if SB_DMA_16 == 5
    #  define DMA16_PAGE      0x8B  
    #else 
    #  if SB_DMA_16 == 6
    #    define DMA16_PAGE    0x89  
    #  else 
    #    if SB_DMA_16 == 7
    #      define DMA16_PAGE  0x8A
    #    endif
    #  endif
    #endif
    
    
    /* DMA modes */
    #define DMA16_AUTO_PLAY         0x58 + (SB_DMA_16 & 3)
    #define DMA16_AUTO_REC          0x54 + (SB_DMA_16 & 3)
    #define DMA8_AUTO_PLAY          0x58 + SB_DMA_8
    #define DMA8_AUTO_REC           0x54 + SB_DMA_8
    
    
    /* IO ports for soundblaster */
    #define DSP_RESET       0x6 + SB_BASE_ADDR
    #define DSP_READ        0xA + SB_BASE_ADDR
    #define DSP_WRITE       0xC + SB_BASE_ADDR
    #define DSP_COMMAND     0xC + SB_BASE_ADDR
    #define DSP_STATUS      0xC + SB_BASE_ADDR
    #define DSP_DATA_AVL    0xE + SB_BASE_ADDR
    #define DSP_DATA16_AVL  0xF + SB_BASE_ADDR
    #define MIXER_REG       0x4 + SB_BASE_ADDR
    #define MIXER_DATA      0x5 + SB_BASE_ADDR
    #define OPL3_LEFT       0x0 + SB_BASE_ADDR
    #define OPL3_RIGHT      0x2 + SB_BASE_ADDR
    #define OPL3_BOTH       0x8 + SB_BASE_ADDR
    
    
    /* DSP Commands */
   #define DSP_INPUT_RATE          0x42  /* set input sample rate */
   #define DSP_OUTPUT_RATE         0x41  /* set output sample rate */
   #define DSP_CMD_SPKON           0xD1  /* set speaker on */
   #define DSP_CMD_SPKOFF          0xD3  /* set speaker off */
   #define DSP_CMD_DMA8HALT        0xD0  /* halt DMA 8-bit operation */  
   #define DSP_CMD_DMA8CONT        0xD4  /* continue DMA 8-bit operation */
   #define DSP_CMD_DMA16HALT       0xD5  /* halt DMA 16-bit operation */
   #define DSP_CMD_DMA16CONT       0xD6  /* continue DMA 16-bit operation */
   #define DSP_GET_VERSION         0xE1  /* get version number of DSP */
   #define DSP_CMD_8BITAUTO_IN     0xCE  /* 8 bit auto-initialized input */
   #define DSP_CMD_8BITAUTO_OUT    0xC6  /* 8 bit auto-initialized output */
   #define DSP_CMD_16BITAUTO_IN    0xBE  /* 16 bit auto-initialized input */
   #define DSP_CMD_16BITAUTO_OUT   0xB6  /* 16 bit auto-initialized output */
   #define DSP_CMD_IRQREQ8         0xF2  /* Interrupt request 8 bit        */
   #define DSP_CMD_IRQREQ16        0xF3  /* Interrupt request 16 bit        */
   
   
   /* DSP Modes */
   #define DSP_MODE_MONO_US        0x00  /* Mono unsigned */
   #define DSP_MODE_MONO_S         0x10  /* Mono signed */
   #define DSP_MODE_STEREO_US      0x20  /* Stereo unsigned */
   #define DSP_MODE_STEREO_S       0x30  /* Stereo signed */
   
   
   /* MIXER commands */
   #define MIXER_RESET             0x00  /* Reset */
   #define MIXER_DAC_LEVEL         0x04  /* Used for detection only */
   #define MIXER_MASTER_LEFT       0x30  /* Master volume left */
   #define MIXER_MASTER_RIGHT      0x31  /* Master volume right */
   #define MIXER_DAC_LEFT          0x32  /* Dac level left */
   #define MIXER_DAC_RIGHT         0x33  /* Dac level right */
   #define MIXER_FM_LEFT           0x34  /* Fm level left */
   #define MIXER_FM_RIGHT          0x35  /* Fm level right */
   #define MIXER_CD_LEFT           0x36  /* Cd audio level left */
   #define MIXER_CD_RIGHT          0x37  /* Cd audio level right */
   #define MIXER_LINE_LEFT         0x38  /* Line in level left */
   #define MIXER_LINE_RIGHT        0x39  /* Line in level right */
   #define MIXER_MIC_LEVEL         0x3A  /* Microphone level */
   #define MIXER_PC_LEVEL          0x3B  /* Pc speaker level */
   #define MIXER_OUTPUT_CTRL       0x3C  /* Output control */
   #define MIXER_IN_LEFT           0x3D  /* Input control left */
   #define MIXER_IN_RIGHT          0x3E  /* Input control right */
   #define MIXER_GAIN_IN_LEFT      0x3F  /* Input gain control left */
   #define MIXER_GAIN_IN_RIGHT     0x40  /* Input gain control right */
   #define MIXER_GAIN_OUT_LEFT     0x41  /* Output gain control left */
   #define MIXER_GAIN_OUT_RIGHT    0x42  /* Output gain control rigth */
   #define MIXER_AGC               0x43  /* Automatic gain control */
   #define MIXER_TREBLE_LEFT       0x44  /* Treble left */
   #define MIXER_TREBLE_RIGHT      0x45  /* Treble right */
   #define MIXER_BASS_LEFT         0x46  /* Bass left */
   #define MIXER_BASS_RIGHT        0x47  /* Bass right */
   #define MIXER_SET_IRQ           0x80  /* Set irq number */
   #define MIXER_SET_DMA           0x81  /* Set DMA channels */
   #define MIXER_IRQ_STATUS        0x82  /* Irq status */
   
   /* Mixer constants */
   #define MIC                             0x01  /* Microphone */
   #define CD_RIGHT                0x02   
   #define CD_LEFT                 0x04
   #define LINE_RIGHT              0x08
   #define LINE_LEFT               0x10
   #define FM_RIGHT                0x20
   #define FM_LEFT                 0x40
   
   /* DSP constants */
   #define DMA_NR_OF_BUFFERS               2
   #define DSP_MAX_SPEED                   44100      /* Max sample speed in KHz */
   #define DSP_MIN_SPEED                   4000       /* Min sample speed in KHz */
   #define DSP_MAX_FRAGMENT_SIZE   DMA_SIZE /  DMA_NR_OF_BUFFERS /* Maximum fragment size */
   #define DSP_MIN_FRAGMENT_SIZE   1024       /* Minimum fragment size */
   #define DSP_NR_OF_BUFFERS               8
   
   
   /* Number of bytes you can DMA before hitting a 64K boundary: */
   #define dma_bytes_left(phys)    \
      ((unsigned) (sizeof(int) == 2 ? 0 : 0x10000) - (unsigned) ((phys) & 0xFFFF))
   
   
   _PROTOTYPE(int mixer_set, (int reg, int data));
   _PROTOTYPE( int sb16_inb, (int port) );
   _PROTOTYPE( void sb16_outb, (int port, int value) );
   
   
   #endif /* SB16_H */

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