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  • /*
     * (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>
    
    #if defined(CONFIG_API)
    
    #include <common.h>
    #include <net.h>
    #include <linux/types.h>
    #include <api_public.h>
    
    DECLARE_GLOBAL_DATA_PTR;
    
    #define DEBUG
    #undef DEBUG
    
    #if !defined(CONFIG_NET_MULTI)
    #error "API/net is currently only available for platforms with CONFIG_NET_MULTI"
    #endif
    
    #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);
    }
    
    #endif /* CONFIG_API */