z85230buf.h

Curtiss-Wright Controls Embedded Computing公司的cw183板bsp源代码

/* z85230Buf.h - header file for z85230Buf module */

/* Copyright 1984-1994 Wind River Systems, Inc. */

/*
modification history
--------------------
*/

#ifndef Z85230BUF_H
#define Z85230BUF_H

#ifdef __cplusplus
extern "C" {
#endif

/* preprocessor macros */

/* device and channel structures */

typedef struct {
  unsigned char * buf;     /* location of bytes */
  
  int read;                /* index into current read frame */
  int write;               /* index into current write frame */

  int size;                /* size of buf */
} Z85230BUF_STREAM;

typedef struct {
  unsigned char * buf;     /* data */

  int size;                /* amount of data */
  int read;                /* used by z85230Hw */

  int maxSize;             /* maximum amount of data */
} Z85230BUF_FRAME;

typedef struct {
  int size;                /* number of frames in the buffer */

  int read;                /* read frame */
  int write;               /* write frame */

  Z85230BUF_FRAME * frames;  /* used in Z85230_FRAME mode */
} Z85230BUF_FRAMES;

/* functions */

/* frame buffer */

int z85230BufPackedSize( int dataSize, int charSize );

int z85230BufUnpackedSize( int packedDataSize, int charSize );

int z85230BufPackBytes( unsigned char * dst, int dstSize,
			unsigned char * src, int srcSize,
			int charSize );

int z85230BufUnpackBytes( unsigned char * dst, int dstSize,
			  unsigned char * src, int srcSize,
			  int charSize );

int z85230BufNumFrames( Z85230BUF_FRAMES * buffer );

int z85230BufCreateFrames( Z85230BUF_FRAMES * buffer, 
			    char ** bufs, int frameSize, int numFrames );
int z85230BufDeleteFrames( Z85230BUF_FRAMES * buffer );

int z85230BufReadFrame( Z85230BUF_FRAMES * buffer, char * bytes, int size,
			int charSize);
int z85230BufWriteFrame( Z85230BUF_FRAMES * buffer, char * bytes, int size,
			 int charSize);

int z85230BufReadFrameSize( Z85230BUF_FRAMES * buffer );
int z85230BufWriteFrameSize( Z85230BUF_FRAMES * buffer );

int z85230BufWriteFrameByte( Z85230BUF_FRAMES * buffer, 
			       unsigned char byte );
int z85230BufReadFrameByte( Z85230BUF_FRAMES * buffer, 
			     unsigned char *  byte );

void z85230BufFlushFrames( Z85230BUF_FRAMES * buffer );
void z85230DmaSetFrameSize( Z85230BUF_FRAMES * buffer, int size);

/* stream buffer */

int z85230BufCreateStream( Z85230BUF_STREAM * buffer, int size );
void z85230BufDeleteStream( Z85230BUF_STREAM * buffer );

int z85230BufStreamSize( Z85230BUF_STREAM * buffer );
int z85230BufStreamAvailable( Z85230BUF_STREAM * buffer );

int z85230BufReadStream( Z85230BUF_STREAM * buffer, char * bytes, 
			 int size, unsigned char mask );
int z85230BufWriteStream( Z85230BUF_STREAM * buffer, char * bytes, 
			  int size, unsigned char mask );

int z85230BufReadStreamByte( Z85230BUF_STREAM * buffer, char * byte );
int z85230BufWriteStreamByte( Z85230BUF_STREAM * buffer, char byte );

void z85230BufFlushStream( Z85230BUF_STREAM * buffer );
void z85230DmaWritePtrUp( Z85230BUF_STREAM * buffer, int dma_bytes );
void z85230DmaReadPtrUp( Z85230BUF_STREAM * buffer, int dma_bytes );
UINT8 *z85230DmaGetTxStream(  Z85230BUF_STREAM * buffer );
UINT32 z85230DmaGetTxStreamSize(  Z85230BUF_STREAM * buffer );
UINT8 *z85230DmaGetRxStream(  Z85230BUF_STREAM * buffer );
UINT32 z85230DmaGetRxStreamSize(  Z85230BUF_STREAM * buffer );
UINT32 z85230DmaGetReadValue(  Z85230BUF_STREAM * buffer );

void z85230CopyDmaStream(Z85230BUF_STREAM *buffer,UINT8 *dma_buf,int dma_size);
#ifdef __cplusplus
}
#endif

#endif /* Z85230BUF_H */