186 lines
6.5 KiB
C
186 lines
6.5 KiB
C
/*
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* Copyright (c) 2001, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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* $Id: netdev.c,v 1.8 2006/06/07 08:39:58 adam Exp $
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*/
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/*---------------------------------------------------------------------------*/
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#include "header.h" /* generic header */
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#include "uip.h"
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#include "uip_arp.h"
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#include "inc/hw_memmap.h"
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#include "inc/hw_types.h"
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#include "inc/hw_ethernet.h"
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#include "driverlib/sysctl.h"
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#include "driverlib/gpio.h"
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#include "driverlib/ethernet.h"
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#include "driverlib/flash.h"
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/*---------------------------------------------------------------------------*/
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#define NETDEV_LINKUP_TIMEOUT_MS (5000)
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#define NETDEV_DEFAULT_MACADDR0 (0x08)
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#define NETDEV_DEFAULT_MACADDR1 (0x00)
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#define NETDEV_DEFAULT_MACADDR2 (0x27)
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#define NETDEV_DEFAULT_MACADDR3 (0x69)
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#define NETDEV_DEFAULT_MACADDR4 (0x5B)
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#define NETDEV_DEFAULT_MACADDR5 (0x45)
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/*---------------------------------------------------------------------------*/
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static struct uip_eth_addr macAddress;
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/*---------------------------------------------------------------------------*/
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void netdev_init(void)
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{
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/* enable and reset the ethernet controller. */
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SysCtlPeripheralEnable(SYSCTL_PERIPH_ETH);
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SysCtlPeripheralReset(SYSCTL_PERIPH_ETH);
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}
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/*---------------------------------------------------------------------------*/
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void netdev_init_mac(void)
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{
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struct uip_eth_addr macAddress;
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unsigned long ulUser0, ulUser1;
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unsigned long ulTemp;
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unsigned long ulLinkTimeOut;
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/* enable port F for ethernet LEDs.
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* LED0 Bit 3 Output
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* LED1 Bit 2 Output
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*/
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SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
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GPIOPinTypeEthernetLED(GPIO_PORTF_BASE, GPIO_PIN_2 | GPIO_PIN_3);
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/* intialize the ethernet controller and disable all ethernet controller
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* interrupt sources.
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*/
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EthernetIntDisable(ETH_BASE, (ETH_INT_PHY | ETH_INT_MDIO | ETH_INT_RXER |
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ETH_INT_RXOF | ETH_INT_TX | ETH_INT_TXER | ETH_INT_RX));
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ulTemp = EthernetIntStatus(ETH_BASE, false);
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EthernetIntClear(ETH_BASE, ulTemp);
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/* initialize the ethernet controller for operation. */
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EthernetInitExpClk(ETH_BASE, SysCtlClockGet());
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/* configure the ethernet controller for normal operation.
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* - Full Duplex
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* - TX CRC Auto Generation
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* - TX Padding Enabled
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*/
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EthernetConfigSet(ETH_BASE, (ETH_CFG_TX_DPLXEN | ETH_CFG_TX_CRCEN |
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ETH_CFG_TX_PADEN));
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/* enable the ethernet controller. */
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EthernetEnable(ETH_BASE);
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/* wait for the link to become active. */
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ulTemp = EthernetPHYRead(ETH_BASE, PHY_MR1);
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ulLinkTimeOut = TimerGet() + NETDEV_LINKUP_TIMEOUT_MS;
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while ((ulTemp & 0x0004) == 0)
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{
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ulTemp = EthernetPHYRead(ETH_BASE, PHY_MR1);
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/* check for timeout so that the software program can still start if the
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* ethernet cable is not connected.
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*/
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if (TimerGet() >= ulLinkTimeOut)
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{
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break;
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}
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}
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/* set the default MAC address */
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macAddress.addr[0] = NETDEV_DEFAULT_MACADDR0;
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macAddress.addr[1] = NETDEV_DEFAULT_MACADDR1;
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macAddress.addr[2] = NETDEV_DEFAULT_MACADDR2;
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macAddress.addr[3] = NETDEV_DEFAULT_MACADDR3;
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macAddress.addr[4] = NETDEV_DEFAULT_MACADDR4;
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macAddress.addr[5] = NETDEV_DEFAULT_MACADDR5;
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/* the LM3S eval kit should have a MAC address pre-propgrammed in flash by the
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* manufacturer. try to use this one, otherwise use the default values.
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*/
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FlashUserGet(&ulUser0, &ulUser1);
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if ( (ulUser0 != 0xffffffff) && (ulUser1 != 0xffffffff) )
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{
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macAddress.addr[0] = ((ulUser0 >> 0) & 0xff);
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macAddress.addr[1] = ((ulUser0 >> 8) & 0xff);
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macAddress.addr[2] = ((ulUser0 >> 16) & 0xff);
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macAddress.addr[3] = ((ulUser1 >> 0) & 0xff);
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macAddress.addr[4] = ((ulUser1 >> 8) & 0xff);
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macAddress.addr[5] = ((ulUser1 >> 16) & 0xff);
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}
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EthernetMACAddrSet(ETH_BASE, &macAddress.addr[0]);
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uip_setethaddr(macAddress);
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}
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/*---------------------------------------------------------------------------*/
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void netdev_get_mac(unsigned char * mac_addr)
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{
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mac_addr[0] = macAddress.addr[0];
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mac_addr[1] = macAddress.addr[1];
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mac_addr[2] = macAddress.addr[2];
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mac_addr[3] = macAddress.addr[3];
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mac_addr[4] = macAddress.addr[4];
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mac_addr[5] = macAddress.addr[5];
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}
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/*---------------------------------------------------------------------------*/
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unsigned int netdev_read(void)
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{
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unsigned long ulTemp;
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/* read and Clear the interrupt flag. */
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ulTemp = EthernetIntStatus(ETH_BASE, false);
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EthernetIntClear(ETH_BASE, ulTemp);
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/* check to see if an RX Interrupt has occured. */
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if(ulTemp & ETH_INT_RX)
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{
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return EthernetPacketGetNonBlocking(ETH_BASE, uip_buf, sizeof(uip_buf));
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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void netdev_send(void)
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{
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EthernetPacketPut(ETH_BASE, uip_buf, uip_len);
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}
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