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https://opencores.org/ocsvn/minsoc/minsoc/trunk
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[/] [minsoc/] [tags/] [release-0.9/] [sw/] [eth/] [eth.c] - Rev 2
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#include "../support/support.h" #include "../support/board.h" #include "../support/uart.h" #include "../support/spr_defs.h" #include "eth.h" void uart_print_str(char *); void uart_print_long(unsigned long); // Dummy or32 except vectors void buserr_except(){} void dpf_except(){} void ipf_except(){} void lpint_except(){} void align_except(){} void illegal_except(){} /*void hpint_except(){ }*/ void dtlbmiss_except(){} void itlbmiss_except(){} void range_except(){} void syscall_except(){} void res1_except(){} void trap_except(){} void res2_except(){} void uart_interrupt() { char lala; unsigned char interrupt_id; interrupt_id = REG8(UART_BASE + UART_IIR); if ( interrupt_id & UART_IIR_RDI ) { lala = uart_getc(); uart_putc(lala+1); } } void uart_print_str(char *p) { while(*p != 0) { uart_putc(*p); p++; } } void uart_print_long(unsigned long ul) { int i; char c; uart_print_str("0x"); for(i=0; i<8; i++) { c = (char) (ul>>((7-i)*4)) & 0xf; if(c >= 0x0 && c<=0x9) c += '0'; else c += 'a' - 10; uart_putc(c); } } void uart_print_short(unsigned long ul) { int i; char c; char flag=0; uart_print_str("0x"); for(i=0; i<8; i++) { c = (char) (ul>>((7-i)*4)) & 0xf; if(c >= 0x0 && c<=0x9) c += '0'; else c += 'a' - 10; if ((c != '0') || (i==7)) flag=1; if(flag) uart_putc(c); } } int tx_done; int rx_done; int rx_len; char tx_data[1536]; //max length char rx_data[1536]; void eth_init() { //TXEN & RXEN = 1; PAD & CRC = 1; FULLD = 1 REG32(ETH_BASE + ETH_MODER) = ETH_TXEN | ETH_RXEN | ETH_PAD | ETH_CRCEN | ETH_FULLD; //PHY Address = 0x001 REG32(ETH_BASE + ETH_MIIADDRESS) = 0x00000001; //enable all interrupts REG32(ETH_BASE + ETH_INT_MASK) = ETH_RXC | ETH_TXC | ETH_BUSY | ETH_RXE | ETH_RXB | ETH_TXE | ETH_TXB; //set MAC ADDRESS REG32(ETH_BASE + ETH_MAC_ADDR1) = OWN_MAC_ADDRESS >> 32; //low word = mac address high word REG32(ETH_BASE + ETH_MAC_ADDR0) = OWN_MAC_ADDRESS; //mac address rest //configure TXBD0 REG32(ETH_BASE + ETH_TXBD0H) = tx_data; //address used for tx_data REG32(ETH_BASE + ETH_TXBD0L) = TX_READY; //length = 0 | PAD & CRC = 1 | IRQ & WR = 1 //configure RXBD0 REG32(ETH_BASE + ETH_RXBD0H) = rx_data; //address used for tx_data REG32(ETH_BASE + ETH_RXBD0L) = RX_READY; //len = 0 | IRQ & WR = 1 | EMPTY = 1 //set txdata tx_data[0] = BROADCAST_ADDRESS >> 40; tx_data[1] = BROADCAST_ADDRESS >> 32; tx_data[2] = BROADCAST_ADDRESS >> 24; tx_data[3] = BROADCAST_ADDRESS >> 16; tx_data[4] = BROADCAST_ADDRESS >> 8; tx_data[5] = BROADCAST_ADDRESS; tx_data[6] = OWN_MAC_ADDRESS >> 40; tx_data[7] = OWN_MAC_ADDRESS >> 32; tx_data[8] = OWN_MAC_ADDRESS >> 24; tx_data[9] = OWN_MAC_ADDRESS >> 16; tx_data[10] = OWN_MAC_ADDRESS >> 8; tx_data[11] = OWN_MAC_ADDRESS; //erase interrupts REG32(ETH_BASE + ETH_INT_SOURCE) = ETH_RXC | ETH_TXC | ETH_BUSY | ETH_RXE | ETH_RXB | ETH_TXE | ETH_TXB; tx_done = 1; rx_done = 0; rx_len = 0; } void eth_send(int length) { if (!tx_done) return; tx_done = 0; tx_data[12] = length >> 8; tx_data[13] = length; REG32(ETH_BASE + ETH_TXBD0L) = (( 0x0000FFFF & ( length + HDR_LEN ) ) << 16) | BD_SND; } void eth_receive() { int i; uart_print_str("Length: \n"); uart_print_long(rx_len - HDR_LEN - CRC_LEN); uart_print_str("\n"); uart_print_str("Data: \n"); for ( i = 0; i < rx_len - HDR_LEN - CRC_LEN; i++ ) { uart_print_short(rx_data[i+HDR_LEN]); // uart_print_str("\n"); } rx_done = 0; rx_len = 0; } void eth_interrupt() { unsigned long source = REG32(ETH_BASE + ETH_INT_SOURCE); switch (source) { case ETH_TXB: tx_done = 1; //erase interrupt REG32(ETH_BASE + ETH_INT_SOURCE) |= ETH_TXB; break; case ETH_RXB: rx_done = 1; //erase interrupt REG32(ETH_BASE + ETH_INT_SOURCE) |= ETH_RXB; //accept further data (reset RXBD to empty) rx_len = (REG32(ETH_BASE + ETH_RXBD0L) >> 16); REG32(ETH_BASE + ETH_RXBD0L) = RX_READY; //len = 0 | IRQ & WR = 1 | EMPTY = 1 break; default: break; } } int main() { unsigned long lalala; uart_init(); int_init(); int_add(UART_IRQ, &uart_interrupt); int_add(ETH_IRQ, ð_interrupt); /* We can't use printf because in this simple example we don't link C library. */ uart_print_str("Hello World.\n\r"); eth_init(); tx_data[14] = 0xFF; tx_data[15] = 0x2B; tx_data[16] = 0x40; tx_data[17] = 0x50; eth_send(4); while(1) { if (rx_done) { eth_receive(); } } report(0xdeaddead); or32_exit(0); }
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