Stream to Memory sgdma problem

Dear all,

I build ST->Mem->St system by using SGDMA Stream to memory and SGDMA Memory to stream. In my nios the callback work at once. Am I do some wrong?

Thanks for your help

doddy

# include <stdio.h>

# include "altera_avalon_sgdma_descriptor.h"

# include "altera_avalon_sgdma_regs.h"

# include "altera_avalon_sgdma.h"

# include "system.h"

# include "alt_types.h"

alt_sgdma_dev *sgdma_rx_dev;

alt_sgdma_dev *sgdma_tx_dev;

alt_sgdma_descriptor *desc;

alt_sgdma_descriptor *desc_2;

alt_u32 *buffer;

int rx=0, tx=0, rxfnl=0;

void sgdma_rx_isr(void * context, u_long intnum);

void sgdma_tx_isr(void * context, u_long intnum);

int main()

{

desc = (alt_sgdma_descriptor *)DESCRIPTOR_MEMORY_BASE;

sgdma_rx_dev = alt_avalon_sgdma_open(SGDMA_RX_NAME);

if(!sgdma_rx_dev)

{

printf(" Error opening RX SGDMA\n");

return -1;

}

buffer = (alt_u32 *) (DESCRIPTOR_MEMORY_BASE);

/* Reset RX-side SGDMA */

IOWR_ALTERA_AVALON_SGDMA_CONTROL(SGDMA_RX_BASE, 0x10000);

usleep(1000);

IOWR_ALTERA_AVALON_SGDMA_CONTROL(SGDMA_RX_BASE, 0x10000);

usleep(1000);

alt_avalon_sgdma_construct_stream_to_mem_desc(

&desc[0], //&#20027;&#25551;&#36848;&#23383;

&desc[0], //&#27425;&#25551;&#36848;&#23383;

buffer, //&#25509;&#25910;&#22320;&#22336;

0, //length,&#20026;0&#26102;&#24403;&#25910;&#21040;EOP&#26102;&#32467;&#26463;

0); //write_fixed

desc[0].control = 128;

alt_avalon_sgdma_register_callback(

sgdma_rx_dev,

(alt_avalon_sgdma_callback) &sgdma_rx_isr,

(ALTERA_AVALON_SGDMA_CONTROL_IE_GLOBAL_MSK |

ALTERA_AVALON_SGDMA_CONTROL_PARK_MSK |

ALTERA_AVALON_SGDMA_CONTROL_IE_DESC_COMPLETED_MSK |

ALTERA_AVALON_SGDMA_CONTROL_IE_CHAIN_COMPLETED_MSK ),

0);

desc_2 = (alt_sgdma_descriptor *)DESCRIPTOR_MEMORY_FNL_BASE;

sgdma_tx_dev = alt_avalon_sgdma_open(SGDMA_TX_NAME);//"/dev/tx_sgdma");

if(!sgdma_tx_dev)

{

printf(" Error opening TX SGDMA\n");

return -1;

}

/* Reset TX-side SGDMA */

IOWR_ALTERA_AVALON_SGDMA_CONTROL(SGDMA_TX_BASE, 0);

IOWR_ALTERA_AVALON_SGDMA_STATUS(SGDMA_TX_BASE, 0xFF);

printf("Melewati reset register\n");

alt_avalon_sgdma_construct_mem_to_stream_desc(

&desc_2[0],

&desc_2[0],

buffer,

(4096), //4096 for 1024 data, 1 data = 4byte

0,

1,

1,

0);

desc_2[0].control = 128;

alt_avalon_sgdma_register_callback(

sgdma_tx_dev,

(alt_avalon_sgdma_callback) &sgdma_tx_isr,

(ALTERA_AVALON_SGDMA_CONTROL_IE_GLOBAL_MSK |

ALTERA_AVALON_SGDMA_CONTROL_PARK_MSK |

ALTERA_AVALON_SGDMA_CONTROL_IE_DESC_COMPLETED_MSK |

ALTERA_AVALON_SGDMA_CONTROL_IE_CHAIN_COMPLETED_MSK ),

0);

alt_avalon_sgdma_do_async_transfer(sgdma_rx_dev, &desc[0]);

printf("Wait for stream in....\n");

while(1);

free(desc_2);

}

void sgdma_rx_isr(void * context, u_long intnum)

{

alt_avalon_sgdma_stop(sgdma_rx_dev);

alt_avalon_sgdma_do_async_transfer(sgdma_tx_dev, &desc_2[0]);

printf("in callback rx\n");

}

void sgdma_tx_isr(void * context, u_long intnum)

{

alt_avalon_sgdma_stop(sgdma_tx_dev);

alt_avalon_sgdma_do_async_transfer(sgdma_rx_dev, &desc[0]);

printf("in callback tx\n");

}

and the output like this:

Melewati reset register

in callback rx

in callback tx

Wait for stream in....