sb16drv.h

IXP425的BSP代码

/* sb16drv.h - global comment */

/* Copyright 1984-2001 Wind River Systems, Inc. */

/*
modification history
--------------------
01c,21sep01,dat  Fix ANSI violations for diab compiler
01b,03feb00,jk   updated to reflect new sb16drv.c code drop.
01a,14oct99,jk   extracted from file sb16drv.c.
*/

/*
DESCRIPTION

*/

#ifndef __INCsb16drvh
#define __INCsb16drvh

#include "drv/sound/sound_dma.h"
#include "drv/sound/sound_ioctl.h"

#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */

#define INT_NUM_IRQ0 0x20
#define INT_VEC_GET(irq) (INT_NUM_IRQ0 + irq)

/* I/O ports */

#define SBP( codec, x ) ( (codec) -> port + s_b_SB_##x )
#define SBP1( port, x ) ( (port) + s_b_SB_##x )

#define s_b_SB_RESET		0x6
#define s_b_SB_READ		0xa
#define s_b_SB_WRITE		0xc
#define s_b_SB_COMMAND		0xc
#define s_b_SB_STATUS		0xc
#define s_b_SB_DATA_AVAIL	0xe
#define s_b_SB_DATA_AVAIL_16 	0xf
#define s_b_SB_MIXER_ADDR	0x4
#define s_b_SB_MIXER_DATA	0x5
#define s_b_SB_OPL3_LEFT	0x0
#define s_b_SB_OPL3_RIGHT	0x2
#define s_b_SB_OPL3_BOTH	0x8

/* dsp commands
 */
#define SB_DSP_SAMPLE_RATE	0x40
#define SB_DSP_SAMPLE_RATE_OUT	0x41
#define SB_DSP_SAMPLE_RATE_IN	0x42
#define SB_DSP_MONO_8BIT	0xa0
#define SB_DSP_MONO_16BIT	0xa4
#define SB_DSP_STEREO_8BIT	0xa8
#define SB_DSP_STEREO_16BIT	0xac
#define SB_DSP4_OUT16_AI	0xb6
#define SB_DSP4_IN16_AI		0xbe
#define SB_DSP4_OUT8_AI		0xc6
#define SB_DSP4_IN8_AI		0xce
#define SB_DSP_DMA8_OFF		0xd0
#define SB_DSP_SPEAKER_ON	0xd1
#define SB_DSP_SPEAKER_OFF	0xd3
#define SB_DSP_DMA8_ON		0xd4
#define SB_DSP_DMA16_OFF	0xd5
#define SB_DSP_DMA16_ON		0xd6
#define SB_DSP_DMA16_EXIT       0xd9
#define SB_DSP_DMA8_EXIT        0xda
#define SB_DSP_GET_VERSION	0xe1

/* dsp input/output formats
 */
#define SB_DSP4_MODE_UNS_MONO		0x00
#define SB_DSP4_MODE_SIGN_MONO		0x10
#define SB_DSP4_MODE_UNS_STEREO		0x20
#define SB_DSP4_MODE_SIGN_STEREO	0x30

/* OPL3 commands
 */
#define TEST_REGISTER			0x01
#define TIMER_CONTROL_REGISTER		0x04	/* Left side */
#define CONNECTION_SELECT_REGISTER	0x04	/* Right side */
#define OPL3_MODE_REGISTER		0x05	/* Right side */
#define KEYON_BLOCK			0xb0	/* Left side ???*/
#define PERCUSSION_REGISTER		0xbd	/* Left side only */

#define TIMER1_REGISTER		0x02
#define TIMER2_REGISTER		0x03

/* TEST_REGISTER options
 */
#define ENABLE_WAVE_SELECT	0x20

/* TIMER_CONTROL_REGISTER options
 */
#define IRQ_RESET		0x80
#define TIMER1_MASK		0x40
#define TIMER2_MASK		0x20

/* OPL3_MODE_REGISTER options
 */
#define OPL3_ENABLE		0x01

/* Mixer commands
 */
#define SB_MIXER_MASTER_DEV	0x30
#define SB_MIXER_PCM_DEV	0x32
#define SB_MIXER_SYNTH_DEV	0x34
#define SB_MIXER_CD_DEV		0x36
#define SB_MIXER_LINE_DEV	0x38
#define SB_MIXER_MIC_DEV	0x3a
#define SB_MIXER_SPEAKER_DEV	0x3b
#define SB_MIXER_OUTPUT_SW	0x3c
#define SB_MIXER_IGAIN_DEV	0x3f
#define SB_MIXER_OGAIN_DEV	0x41
#define SB_MIXER_MIC_AGC	0x43
#define SB_MIXER_TREBLE_DEV	0x44
#define SB_MIXER_BASS_DEV	0x46
#define SB_MIXER_IRQ_NR		0x80
#define SB_MIXER_DMA_NR		0x81
#define SB_MIXER_IRQ_STAT	0x82
#define SB_MIXER_MPU_NR         0x84

#define RATE_MIN  4000
#define RATE_MAX 44100

#define MAX_DMA_MSGS 2
#define MAX_DMA_SIZE 32768

#define TASK_PRIORITY    0
#define TASK_OPTIONS     0
#define TASK_STACK_SIZE  2048

typedef struct
{
  char *name;
  int reg;
  int max_value;
  int shift;
  int unknownfield;
} MIXER_INFO;

typedef struct
{
  char *buffer;
  int length;
  int direction;
} DMA_MSG;

typedef struct snd_fd_struct SND_FD;
typedef struct dsp_fd_struct DSP_FD;
typedef struct mixer_fd_struct MIXER_FD;

typedef struct
{
  DEV_HDR devHdr;

  unsigned short port;		/* base port of DSP chip */
  unsigned short mpu_port;	/* MPU port for SB DSP 4.0+ */
  unsigned short irq;		/* IRQ number of DSP chip */
  unsigned short dma8;		/* 8-bit DMA */
  unsigned short dma16;		/* 16-bit DMA */

  unsigned short version;	/* version of DSP chip */

  SEM_ID devSem;
  SEM_ID intSem;
  SEM_ID bufSem;
  MSG_Q_ID dmaQ;

  DSP_FD *pDsp;
  MIXER_FD *pMixer;

  int dmaIndex;

  int tid;
  int taskBusy;
  int dmaAuto;

} SND_DEV;

struct snd_fd_struct
{
  SND_DEV *pDev;

  FUNCPTR fdClose;
  FUNCPTR fdRead;
  FUNCPTR fdWrite;
  FUNCPTR fdIoctl;
};

struct dsp_fd_struct
{
  SND_FD dev;

  int dmaDirection;
  int dmaChannel;

  snd_info_t info;
};

struct mixer_fd_struct
{
  SND_FD dev;
};


/* function declarations */

#if defined(__STDC__) || defined(__cplusplus)

STATUS sb16Drv (void);
STATUS sb16DevCreate (char *devName, int port, int irq, int dma8, int dma16);

#else

STATUS sb16Drv ();
STATUS sb16DevCreate ();

#endif  /* __STDC__ */


#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* __INCsb16drvh */