;tx_buf = (char*) kmalloc(TX_PACKET_SIZE, GFP_KERNEL | GFP_DMA);
packet_buffer = (char*) kmalloc(RX_PACKET_SIZE, GFP_KERNEL | GFP_DMA);
/* allocate memory for the receive buffer; the contents of this
buffer are provided during read() */
rx_ring.buf = (char*) kmalloc(RBUF_SIZE, GFP_KERNEL);
/* set up USB descriptors */
twiddle_descriptors();
/* enable USB i/o */
sa1100_usb_start();
/* set up to receive a packet */
kick_start_rx();
return 0;
twiddle_descriptors ()功能建立起设备的USB描述符。在描述符全部建起后，准备从USB主机枚举并接收一个数据帧。kick_start_r页码：[1] [2] [3] [4] [5] [6] [7] [8] 第5页、共8页 |
