start_debi_dma
start_debi_dma(av7110, DEBI_WRITE, DPRAM_BASE + txbuf, len);
start_debi_dma(av7110, DEBI_WRITE, DPRAM_BASE + txbuf, len);
start_debi_dma(av7110, DEBI_WRITE, DPRAM_BASE + txbuf, len);
start_debi_dma(av7110, DEBI_READ, DPRAM_BASE + rxbuf, len);
start_debi_dma(av7110, DEBI_READ, Reserved, len);