net.c

来自「ADS下的bios工程」· C语言 代码 · 共 87 行

#include <bios/stdio.h>
#include <bios/boot.h>
#include <bios/time.h>
#include <bios/config.h>
#include <bios/netdev.h>
#include <bios/string.h>

#define DEBUG_S3C4_NET
#undef DEBUG_S3C4_NET
#ifdef DEBUG_S3C4_NET
	#define DEBUG_NET(fmt, args...) printf("%s-%s()[%d]: " fmt, __FILE__, __FUNCTION__, __LINE__, args)
#else
	#define DEBUG_NET(fmt, args...)
#endif

extern int eth_s3c4_probe(struct netdev *dev);
extern int cs8900_probe (struct netdev *dev);
extern int do_tftp(struct netdev *dev);

struct probe_dev netprobe[]  = {
       { cs8900_probe, 0},	
       { NULL, 0},
};


struct netdev probed_net_devs;

static int net_probe(void)
{
	static struct netdev *dev;
        struct probe_dev *dp;	

	DEBUG_NET("In the net_probe %c\n",'!');
	dev = &probed_net_devs;
	dp =  (struct probe_dev *)&netprobe;

	while(dp->probe != NULL) {
		DEBUG_NET("dp->probe is not NULL %c\n", '!');
		if (dp->probe(dev) == 0) {
		       return 0;
                }
		else if(dp->status == 0) {
		          dp->status = dp->probe(dev);
		          if(dp->status == 0)
			       return 0;
                }
		dp++;
	}

        return -1;
}

static int net_start(void)
{
	struct netdev *dev = &probed_net_devs;

        if (!dev) return -1;
	if (dev->open(dev) == 0) dev->up = 1;
        
	return 0;
}

static int net_load(void)
{
	struct netdev *dev = &probed_net_devs;

	return do_tftp(dev);
}

static int net_stop(void)
{
	struct netdev *dev = &probed_net_devs;
	
	if(dev->up) dev->close(dev);

	return 0;
}

struct bootdev boot_net = {
	"net",        /* net device name */

	net_probe,    /* int (*init)(void); */
	net_start,    /* int (*start)(void); */
	net_load,     /* int (*load)(void); */
	net_stop      /* int (*stop)(void); */
};