186 lines
6.5 KiB
C
186 lines
6.5 KiB
C
/*
|
|
* Copyright (c) 2001, Swedish Institute of Computer Science.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* Author: Adam Dunkels <adam@sics.se>
|
|
*
|
|
* $Id: netdev.c,v 1.8 2006/06/07 08:39:58 adam Exp $
|
|
*/
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
#include "uip.h"
|
|
#include "uip_arp.h"
|
|
#include "boot.h"
|
|
#include "inc/hw_memmap.h"
|
|
#include "inc/hw_types.h"
|
|
#include "inc/hw_ethernet.h"
|
|
#include "driverlib/sysctl.h"
|
|
#include "driverlib/gpio.h"
|
|
#include "driverlib/ethernet.h"
|
|
#include "driverlib/flashlib.h"
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
#define NETDEV_LINKUP_TIMEOUT_MS (5000)
|
|
|
|
#define NETDEV_DEFAULT_MACADDR0 (0x08)
|
|
#define NETDEV_DEFAULT_MACADDR1 (0x00)
|
|
#define NETDEV_DEFAULT_MACADDR2 (0x27)
|
|
#define NETDEV_DEFAULT_MACADDR3 (0x69)
|
|
#define NETDEV_DEFAULT_MACADDR4 (0x5B)
|
|
#define NETDEV_DEFAULT_MACADDR5 (0x45)
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
static struct uip_eth_addr macAddress;
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void netdev_init(void)
|
|
{
|
|
/* enable and reset the ethernet controller. */
|
|
SysCtlPeripheralEnable(SYSCTL_PERIPH_ETH);
|
|
SysCtlPeripheralReset(SYSCTL_PERIPH_ETH);
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void netdev_init_mac(void)
|
|
{
|
|
struct uip_eth_addr macAddress;
|
|
unsigned long ulUser0, ulUser1;
|
|
blt_int32u ulTemp;
|
|
blt_int32u ulLinkTimeOut;
|
|
|
|
/* enable port F for ethernet LEDs.
|
|
* LED0 Bit 3 Output
|
|
* LED1 Bit 2 Output
|
|
*/
|
|
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
|
|
GPIOPinTypeEthernetLED(GPIO_PORTF_BASE, GPIO_PIN_2 | GPIO_PIN_3);
|
|
/* intialize the ethernet controller and disable all ethernet controller
|
|
* interrupt sources.
|
|
*/
|
|
EthernetIntDisable(ETH_BASE, (ETH_INT_PHY | ETH_INT_MDIO | ETH_INT_RXER |
|
|
ETH_INT_RXOF | ETH_INT_TX | ETH_INT_TXER | ETH_INT_RX));
|
|
ulTemp = EthernetIntStatus(ETH_BASE, false);
|
|
EthernetIntClear(ETH_BASE, ulTemp);
|
|
/* initialize the ethernet controller for operation. */
|
|
EthernetInitExpClk(ETH_BASE, SysCtlClockGet());
|
|
/* configure the ethernet controller for normal operation.
|
|
* - Full Duplex
|
|
* - TX CRC Auto Generation
|
|
* - TX Padding Enabled
|
|
*/
|
|
EthernetConfigSet(ETH_BASE, (ETH_CFG_TX_DPLXEN | ETH_CFG_TX_CRCEN |
|
|
ETH_CFG_TX_PADEN));
|
|
/* enable the ethernet controller. */
|
|
EthernetEnable(ETH_BASE);
|
|
|
|
/* wait for the link to become active. */
|
|
ulTemp = EthernetPHYRead(ETH_BASE, PHY_MR1);
|
|
ulLinkTimeOut = TimerGet() + NETDEV_LINKUP_TIMEOUT_MS;
|
|
|
|
while ((ulTemp & 0x0004) == 0)
|
|
{
|
|
ulTemp = EthernetPHYRead(ETH_BASE, PHY_MR1);
|
|
/* check for timeout so that the software program can still start if the
|
|
* ethernet cable is not connected.
|
|
*/
|
|
if (TimerGet() >= ulLinkTimeOut)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* set the default MAC address */
|
|
macAddress.addr[0] = NETDEV_DEFAULT_MACADDR0;
|
|
macAddress.addr[1] = NETDEV_DEFAULT_MACADDR1;
|
|
macAddress.addr[2] = NETDEV_DEFAULT_MACADDR2;
|
|
macAddress.addr[3] = NETDEV_DEFAULT_MACADDR3;
|
|
macAddress.addr[4] = NETDEV_DEFAULT_MACADDR4;
|
|
macAddress.addr[5] = NETDEV_DEFAULT_MACADDR5;
|
|
/* the LM3S eval kit should have a MAC address pre-propgrammed in flash by the
|
|
* manufacturer. try to use this one, otherwise use the default values.
|
|
*/
|
|
FlashUserGet(&ulUser0, &ulUser1);
|
|
if ( (ulUser0 != 0xffffffff) && (ulUser1 != 0xffffffff) )
|
|
{
|
|
macAddress.addr[0] = ((ulUser0 >> 0) & 0xff);
|
|
macAddress.addr[1] = ((ulUser0 >> 8) & 0xff);
|
|
macAddress.addr[2] = ((ulUser0 >> 16) & 0xff);
|
|
macAddress.addr[3] = ((ulUser1 >> 0) & 0xff);
|
|
macAddress.addr[4] = ((ulUser1 >> 8) & 0xff);
|
|
macAddress.addr[5] = ((ulUser1 >> 16) & 0xff);
|
|
}
|
|
EthernetMACAddrSet(ETH_BASE, &macAddress.addr[0]);
|
|
uip_setethaddr(macAddress);
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void netdev_get_mac(unsigned char * mac_addr)
|
|
{
|
|
mac_addr[0] = macAddress.addr[0];
|
|
mac_addr[1] = macAddress.addr[1];
|
|
mac_addr[2] = macAddress.addr[2];
|
|
mac_addr[3] = macAddress.addr[3];
|
|
mac_addr[4] = macAddress.addr[4];
|
|
mac_addr[5] = macAddress.addr[5];
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
unsigned int netdev_read(void)
|
|
{
|
|
blt_int32u ulTemp;
|
|
|
|
/* read and Clear the interrupt flag. */
|
|
ulTemp = EthernetIntStatus(ETH_BASE, false);
|
|
EthernetIntClear(ETH_BASE, ulTemp);
|
|
|
|
/* check to see if an RX Interrupt has occured. */
|
|
if(ulTemp & ETH_INT_RX)
|
|
{
|
|
return EthernetPacketGetNonBlocking(ETH_BASE, uip_buf, sizeof(uip_buf));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
void netdev_send(void)
|
|
{
|
|
EthernetPacketPut(ETH_BASE, uip_buf, uip_len);
|
|
}
|
|
|
|
|