File content as of revision 8:f7aa5ec1e6fe:

/* Ethernetnetwork.cpp */
/*
 Copyright (C) 2012 ARM Limited.

 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in
 the Software without restriction, including without limitation the rights to
 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 of the Software, and to permit persons to whom the Software is furnished to do
 so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 */

#define __DEBUG__ 4
#ifndef __MODULE__
#define __MODULE__ "EthernetInterface.cpp"
#endif

#include "core/fwk.h"

#include "EthernetInterface.h"

#include "lwip/inet.h"
#include "lwip/netif.h"
#include "netif/etharp.h"
#include "lwip/dhcp.h"
#include "arch/lpc17_emac.h"
#include "lpc_phy.h" /* For the PHY monitor support */
#include "lwip/tcpip.h"

#include "mbed.h"


EthernetInterface::EthernetInterface() : LwIPInterface(), m_lpcNetif(), m_netifStatusSphre(1), m_useDHCP(false)
{
  s_lpcNetifOff = (int32_t)( ((char*)this) - ((char*)&m_lpcNetif) );
  m_netifStatusSphre.wait(0);
}

int EthernetInterface::init() //With DHCP
{
  m_useDHCP = true;

  DBG("Initializing LwIP");
  LwIPInterface::init(); //Init LwIP, NOT including PPP

  DBG("DHCP IP assignment");

  memset((void*)&m_lpcNetif, 0, sizeof(m_lpcNetif));
  netif_add(&m_lpcNetif, NULL, NULL, NULL, NULL, lpc_enetif_init, ethernet_input/*tcpip_input???*/);
  netif_set_default(&m_lpcNetif);
  
  netif_set_status_callback(&m_lpcNetif, &EthernetInterface::netifStatusCb);

  return OK;
}

int EthernetInterface::init(const char* ip, const char* mask, const char* gateway,
    const char* dns1, const char* dns2) //No DHCP
{
  ip_addr_t ip_n, mask_n, gateway_n, dns1_n, dns2_n;

  m_useDHCP = false;

  DBG("Initializing LwIP");
  LwIPInterface::init(); //Init LwIP

  DBG("Static IP assignment");
  inet_aton(ip, &ip_n);
  inet_aton(mask, &mask_n);
  inet_aton(gateway, &gateway_n);
  inet_aton(dns1, &dns1_n);
  inet_aton(dns2, &dns2_n);

  memset((void*)&m_lpcNetif, 0, sizeof(m_lpcNetif));
  netif_add(&m_lpcNetif, &ip_n, &mask_n, &gateway_n, NULL, lpc_enetif_init, ethernet_input/*tcpip_input???*/);
  netif_set_default(&m_lpcNetif);
  
  netif_set_status_callback(&m_lpcNetif, &EthernetInterface::netifStatusCb);

  return OK;
}

int EthernetInterface::connect()
{
  m_netifStatusSphre.wait(0);

  DBG("Enable MAC interrupts");
  NVIC_SetPriority(ENET_IRQn, ((0x01 << 3) | 0x01));
  NVIC_EnableIRQ(ENET_IRQn);

  if(m_useDHCP)
  {
    dhcp_start(&m_lpcNetif); //The DHCP client will set the interface up once the IP/Netmask/Getway/DNS Servers are recovered
  }
  else
  {
    netif_set_up(&m_lpcNetif); //Set interface up
  }
  
  m_netifStatusSphre.wait();
  
  DBG("Connected with IP %s", getIPAddress());

  return OK;
}

int EthernetInterface::disconnect()
{
  m_netifStatusSphre.wait(0);

  if(m_useDHCP)
  {
    dhcp_release(&m_lpcNetif); //Release the lease & bring interface down
    dhcp_stop(&m_lpcNetif);
  }
  else
  {
    netif_set_down(&m_lpcNetif);  
  }

  DBG("Disable MAC interrupts");
  NVIC_DisableIRQ(ENET_IRQn);
  
  m_netifStatusSphre.wait();

  return OK;
}

/*static*/ void EthernetInterface::netifStatusCb(struct netif *netif)
{
    EthernetInterface* pIf = (EthernetInterface*)( ((int32_t)netif) + ((int32_t)s_lpcNetifOff) ); //Bad kludge
    pIf->setIPAddress(inet_ntoa(netif->ip_addr));
    pIf->setConnected(netif_is_up(netif)?true:false);
    pIf->m_netifStatusSphre.wait(0); //Clear if pending
    pIf->m_netifStatusSphre.release();
}

/*static*/ int32_t EthernetInterface::s_lpcNetifOff = 0;