text: /*
   * (C) Copyright 2007 Semihalf
   *
   * Written by: Rafal Jaworowski <raj@semihalf.com>
   *
   * See file CREDITS for list of people who contributed to this
   * project.
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as
   * published by the Free Software Foundation; either version 2 of
   * the License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
   * MA 02111-1307 USA
   *
   */
  
  #include <config.h>
  #include <common.h>
  #include <net.h>
  #include <linux/types.h>
  #include <api_public.h>
  
  DECLARE_GLOBAL_DATA_PTR;
  
  #define DEBUG
  #undef DEBUG
  
  #ifdef DEBUG
  #define debugf(fmt, args...) do { printf("%s(): ", __func__); printf(fmt, ##args); } while (0)
  #else
  #define debugf(fmt, args...)
  #endif
  
  #define errf(fmt, args...) do { printf("ERROR @ %s(): ", __func__); printf(fmt, ##args); } while (0)
  
  
  static int dev_valid_net(void *cookie)
  {
  	return ((void *)eth_get_dev() == cookie) ? 1 : 0;
  }
  
  int dev_open_net(void *cookie)
  {
  	if (!dev_valid_net(cookie))
  		return API_ENODEV;
  
  	if (eth_init(gd->bd) < 0)
  		return API_EIO;
  
  	return 0;
  }
  
  int dev_close_net(void *cookie)
  {
  	if (!dev_valid_net(cookie))
  		return API_ENODEV;
  
  	eth_halt();
  	return 0;
  }
  
  /*
   * There can only be one active eth interface at a time - use what is
   * currently set to eth_current
   */
  int dev_enum_net(struct device_info *di)
  {
  	struct eth_device *eth_current = eth_get_dev();
  
  	di->type = DEV_TYP_NET;
  	di->cookie = (void *)eth_current;
  	if (di->cookie == NULL)
  		return 0;
  
  	memcpy(di->di_net.hwaddr, eth_current->enetaddr, 6);
  
  	debugf("device found, returning cookie 0x%08x\n",
  		(u_int32_t)di->cookie);
  
  	return 1;
  }
  
  int dev_write_net(void *cookie, void *buf, int len)
  {
  	/* XXX verify that cookie points to a valid net device??? */
  
  	return eth_send(buf, len);
  }
  
  int dev_read_net(void *cookie, void *buf, int len)
  {
  	/* XXX verify that cookie points to a valid net device??? */
  
  	return eth_receive(buf, len);
  }
  