[people/ms/u-boot.git] / net / eth.c

/*
 * (C) Copyright 2001-2010
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * 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 <common.h>
#include <command.h>
#include <net.h>
#include <miiphy.h>

void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
{
	char *end;
	int i;

	for (i = 0; i < 6; ++i) {
		enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
		if (addr)
			addr = (*end) ? end + 1 : end;
	}
}

int eth_getenv_enetaddr(char *name, uchar *enetaddr)
{
	eth_parse_enetaddr(getenv(name), enetaddr);
	return is_valid_ether_addr(enetaddr);
}

int eth_setenv_enetaddr(char *name, const uchar *enetaddr)
{
	char buf[20];

	sprintf(buf, "%pM", enetaddr);

	return setenv(name, buf);
}

int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr)
{
	char enetvar[32];
	sprintf(enetvar, index ? "eth%daddr" : "ethaddr", index);
	return eth_getenv_enetaddr(enetvar, enetaddr);
}

#ifdef CONFIG_NET_MULTI

static int eth_mac_skip(int index)
{
	char enetvar[15];
	char *skip_state;
	sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
	return ((skip_state = getenv(enetvar)) != NULL);
}

/*
 * CPU and board-specific Ethernet initializations.  Aliased function
 * signals caller to move on
 */
static int __def_eth_init(bd_t *bis)
{
	return -1;
}
int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));

extern int mv6436x_eth_initialize(bd_t *);
extern int mv6446x_eth_initialize(bd_t *);

#ifdef CONFIG_API
extern void (*push_packet)(volatile void *, int);

static struct {
	uchar data[PKTSIZE];
	int length;
} eth_rcv_bufs[PKTBUFSRX];

static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
#endif

static struct eth_device *eth_devices, *eth_current;

struct eth_device *eth_get_dev(void)
{
	return eth_current;
}

struct eth_device *eth_get_dev_by_name(const char *devname)
{
	struct eth_device *dev, *target_dev;

	if (!eth_devices)
		return NULL;

	dev = eth_devices;
	target_dev = NULL;
	do {
		if (strcmp(devname, dev->name) == 0) {
			target_dev = dev;
			break;
		}
		dev = dev->next;
	} while (dev != eth_devices);

	return target_dev;
}

struct eth_device *eth_get_dev_by_index(int index)
{
	struct eth_device *dev, *target_dev;
	int idx = 0;

	if (!eth_devices)
		return NULL;

	dev = eth_devices;
	target_dev = NULL;
	do {
		if (idx == index) {
			target_dev = dev;
			break;
		}
		dev = dev->next;
		idx++;
	} while (dev != eth_devices);

	return target_dev;
}

int eth_get_dev_index (void)
{
	struct eth_device *dev;
	int num = 0;

	if (!eth_devices) {
		return (-1);
	}

	for (dev = eth_devices; dev; dev = dev->next) {
		if (dev == eth_current)
			break;
		++num;
	}

	if (dev) {
		return (num);
	}

	return (0);
}

int eth_register(struct eth_device* dev)
{
	struct eth_device *d;

	if (!eth_devices) {
		eth_current = eth_devices = dev;
#ifdef CONFIG_NET_MULTI
		/* update current ethernet name */
		{
			char *act = getenv("ethact");
			if (act == NULL || strcmp(act, eth_current->name) != 0)
				setenv("ethact", eth_current->name);
		}
#endif
	} else {
		for (d=eth_devices; d->next!=eth_devices; d=d->next)
			;
		d->next = dev;
	}

	dev->state = ETH_STATE_INIT;
	dev->next  = eth_devices;

	return 0;
}

int eth_initialize(bd_t *bis)
{
	unsigned char env_enetaddr[6];
	int eth_number = 0;

	eth_devices = NULL;
	eth_current = NULL;

	show_boot_progress (64);
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
	miiphy_init();
#endif
	/* Try board-specific initialization first.  If it fails or isn't
	 * present, try the cpu-specific initialization */
	if (board_eth_init(bis) < 0)
		cpu_eth_init(bis);

#if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
	mv6436x_eth_initialize(bis);
#endif
#if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
	mv6446x_eth_initialize(bis);
#endif
	if (!eth_devices) {
		puts ("No ethernet found.\n");
		show_boot_progress (-64);
	} else {
		struct eth_device *dev = eth_devices;
		char *ethprime = getenv ("ethprime");

		show_boot_progress (65);
		do {
			if (eth_number)
				puts (", ");

			printf("%s", dev->name);

			if (ethprime && strcmp (dev->name, ethprime) == 0) {
				eth_current = dev;
				puts (" [PRIME]");
			}

			if (strchr(dev->name, ' '))
				puts("\nWarning: eth device name has a space!\n");

			eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);

			if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
				if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
				    memcmp(dev->enetaddr, env_enetaddr, 6))
				{
					printf ("\nWarning: %s MAC addresses don't match:\n",
						dev->name);
					printf ("Address in SROM is         %pM\n",
						dev->enetaddr);
					printf ("Address in environment is  %pM\n",
						env_enetaddr);
				}

				memcpy(dev->enetaddr, env_enetaddr, 6);
			}
			if (dev->write_hwaddr &&
				!eth_mac_skip(eth_number) &&
				is_valid_ether_addr(dev->enetaddr)) {
				dev->write_hwaddr(dev);
			}

			eth_number++;
			dev = dev->next;
		} while(dev != eth_devices);

		/* update current ethernet name */
		if (eth_current) {
			char *act = getenv("ethact");
			if (act == NULL || strcmp(act, eth_current->name) != 0)
				setenv("ethact", eth_current->name);
		} else
			setenv("ethact", NULL);

		putc ('\n');
	}

	return eth_number;
}

#ifdef CONFIG_MCAST_TFTP
/* Multicast.
 * mcast_addr: multicast ipaddr from which multicast Mac is made
 * join: 1=join, 0=leave.
 */
int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
{
 u8 mcast_mac[6];
	if (!eth_current || !eth_current->mcast)
		return -1;
	mcast_mac[5] = htonl(mcast_ip) & 0xff;
	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
	mcast_mac[2] = 0x5e;
	mcast_mac[1] = 0x0;
	mcast_mac[0] = 0x1;
	return eth_current->mcast(eth_current, mcast_mac, join);
}

/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
 * and this is the ethernet-crc method needed for TSEC -- and perhaps
 * some other adapter -- hash tables
 */
#define CRCPOLY_LE 0xedb88320
u32 ether_crc (size_t len, unsigned char const *p)
{
	int i;
	u32 crc;
	crc = ~0;
	while (len--) {
		crc ^= *p++;
		for (i = 0; i < 8; i++)
			crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
	}
	/* an reverse the bits, cuz of way they arrive -- last-first */
	crc = (crc >> 16) | (crc << 16);
	crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
	crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
	crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
	crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
	return crc;
}

#endif


int eth_init(bd_t *bis)
{
	int eth_number;
	struct eth_device *old_current, *dev;

	if (!eth_current) {
		puts ("No ethernet found.\n");
		return -1;
	}

	/* Sync environment with network devices */
	eth_number = 0;
	dev = eth_devices;
	do {
		uchar env_enetaddr[6];

		if (eth_getenv_enetaddr_by_index(eth_number, env_enetaddr))
			memcpy(dev->enetaddr, env_enetaddr, 6);

		++eth_number;
		dev = dev->next;
	} while (dev != eth_devices);

	old_current = eth_current;
	do {
		debug("Trying %s\n", eth_current->name);

		if (eth_current->init(eth_current,bis) >= 0) {
			eth_current->state = ETH_STATE_ACTIVE;

			return 0;
		}
		debug("FAIL\n");

		eth_try_another(0);
	} while (old_current != eth_current);

	return -1;
}

void eth_halt(void)
{
	if (!eth_current)
		return;

	eth_current->halt(eth_current);

	eth_current->state = ETH_STATE_PASSIVE;
}

int eth_send(volatile void *packet, int length)
{
	if (!eth_current)
		return -1;

	return eth_current->send(eth_current, packet, length);
}

int eth_rx(void)
{
	if (!eth_current)
		return -1;

	return eth_current->recv(eth_current);
}

#ifdef CONFIG_API
static void eth_save_packet(volatile void *packet, int length)
{
	volatile char *p = packet;
	int i;

	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
		return;

	if (PKTSIZE < length)
		return;

	for (i = 0; i < length; i++)
		eth_rcv_bufs[eth_rcv_last].data[i] = p[i];

	eth_rcv_bufs[eth_rcv_last].length = length;
	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
}

int eth_receive(volatile void *packet, int length)
{
	volatile char *p = packet;
	void *pp = push_packet;
	int i;

	if (eth_rcv_current == eth_rcv_last) {
		push_packet = eth_save_packet;
		eth_rx();
		push_packet = pp;

		if (eth_rcv_current == eth_rcv_last)
			return -1;
	}

	if (length < eth_rcv_bufs[eth_rcv_current].length)
		return -1;

	length = eth_rcv_bufs[eth_rcv_current].length;

	for (i = 0; i < length; i++)
		p[i] = eth_rcv_bufs[eth_rcv_current].data[i];

	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	return length;
}
#endif /* CONFIG_API */

void eth_try_another(int first_restart)
{
	static struct eth_device *first_failed = NULL;
	char *ethrotate, *act;

	/*
	 * Do not rotate between network interfaces when
	 * 'ethrotate' variable is set to 'no'.
	 */
	if (((ethrotate = getenv ("ethrotate")) != NULL) &&
	    (strcmp(ethrotate, "no") == 0))
		return;

	if (!eth_current)
		return;

	if (first_restart) {
		first_failed = eth_current;
	}

	eth_current = eth_current->next;

	/* update current ethernet name */
	act = getenv("ethact");
	if (act == NULL || strcmp(act, eth_current->name) != 0)
		setenv("ethact", eth_current->name);

	if (first_failed == eth_current) {
		NetRestartWrap = 1;
	}
}

void eth_set_current(void)
{
	static char *act = NULL;
	static int  env_changed_id = 0;
	struct eth_device* old_current;
	int	env_id;

	if (!eth_current)	/* XXX no current */
		return;

	env_id = get_env_id();
	if ((act == NULL) || (env_changed_id != env_id)) {
		act = getenv("ethact");
		env_changed_id = env_id;
	}
	if (act != NULL) {
		old_current = eth_current;
		do {
			if (strcmp(eth_current->name, act) == 0)
				return;
			eth_current = eth_current->next;
		} while (old_current != eth_current);
	}

	setenv("ethact", eth_current->name);
}

char *eth_get_name (void)
{
	return (eth_current ? eth_current->name : "unknown");
}

#else /* !CONFIG_NET_MULTI */

#warning Ethernet driver is deprecated.  Please update to use CONFIG_NET_MULTI

extern int at91rm9200_miiphy_initialize(bd_t *bis);
extern int mcf52x2_miiphy_initialize(bd_t *bis);
extern int ns7520_miiphy_initialize(bd_t *bis);


int eth_initialize(bd_t *bis)
{
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
	miiphy_init();
#endif

#if defined(CONFIG_AT91RM9200)
	at91rm9200_miiphy_initialize(bis);
#endif
#if defined(CONFIG_MCF52x2)
	mcf52x2_miiphy_initialize(bis);
#endif
#if defined(CONFIG_DRIVER_NS7520_ETHERNET)
	ns7520_miiphy_initialize(bis);
#endif
	return 0;
}
#endif
Commit	Line	Data
c609719b	1	/*
aba4b69d	2	* (C) Copyright 2001-2010
c609719b WD	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	#include <common.h>
	25	#include <command.h>
	26	#include <net.h>
d9785c14	27	#include <miiphy.h>
c609719b	28
3f6e6993 MF	29	void eth_parse_enetaddr(const char addr, uchar enetaddr)
	30	{
	31	char *end;
	32	int i;
	33
	34	for (i = 0; i < 6; ++i) {
	35	enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
	36	if (addr)
	37	addr = (*end) ? end + 1 : end;
	38	}
	39	}
	40
	41	int eth_getenv_enetaddr(char name, uchar enetaddr)
	42	{
	43	eth_parse_enetaddr(getenv(name), enetaddr);
	44	return is_valid_ether_addr(enetaddr);
	45	}
	46
	47	int eth_setenv_enetaddr(char name, const uchar enetaddr)
	48	{
	49	char buf[20];
	50
	51	sprintf(buf, "%pM", enetaddr);
	52
	53	return setenv(name, buf);
	54	}
86848a74 MF	55
	56	int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr)
	57	{
	58	char enetvar[32];
	59	sprintf(enetvar, index ? "eth%daddr" : "ethaddr", index);
	60	return eth_getenv_enetaddr(enetvar, enetaddr);
	61	}
3f6e6993	62
9c00b2f0 WD	63	#ifdef CONFIG_NET_MULTI
9c00b2f0 WD	64
ecee9324 BW	65	static int eth_mac_skip(int index)
	66	{
	67	char enetvar[15];
	68	char *skip_state;
	69	sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
	70	return ((skip_state = getenv(enetvar)) != NULL);
	71	}
	72
dd35479a BW	73	/*
	74	* CPU and board-specific Ethernet initializations. Aliased function
	75	* signals caller to move on
	76	*/
	77	static int __def_eth_init(bd_t *bis)
	78	{
	79	return -1;
	80	}
f9a109b3 PT	81	int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
f9a109b3 PT	82	int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
dd35479a	83
3a473b2a WD	84	extern int mv6436x_eth_initialize(bd_t *);
3a473b2a WD	85	extern int mv6446x_eth_initialize(bd_t *);
c609719b	86
f85b6071 RJ	87	#ifdef CONFIG_API
	88	extern void (push_packet)(volatile void , int);
	89
	90	static struct {
	91	uchar data[PKTSIZE];
	92	int length;
	93	} eth_rcv_bufs[PKTBUFSRX];
	94
	95	static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
	96	#endif
	97
c609719b WD	98	static struct eth_device eth_devices, eth_current;
	99
	100	struct eth_device *eth_get_dev(void)
	101	{
	102	return eth_current;
	103	}
	104
d7fb9bcf	105	struct eth_device eth_get_dev_by_name(const char devname)
63ff004c MB	106	{
	107	struct eth_device dev, target_dev;
	108
	109	if (!eth_devices)
	110	return NULL;
	111
	112	dev = eth_devices;
	113	target_dev = NULL;
	114	do {
	115	if (strcmp(devname, dev->name) == 0) {
	116	target_dev = dev;
	117	break;
	118	}
	119	dev = dev->next;
	120	} while (dev != eth_devices);
	121
	122	return target_dev;
	123	}
	124
9e56986a AF	125	struct eth_device *eth_get_dev_by_index(int index)
	126	{
	127	struct eth_device dev, target_dev;
	128	int idx = 0;
	129
	130	if (!eth_devices)
	131	return NULL;
	132
	133	dev = eth_devices;
	134	target_dev = NULL;
	135	do {
	136	if (idx == index) {
	137	target_dev = dev;
	138	break;
	139	}
	140	dev = dev->next;
	141	idx++;
	142	} while (dev != eth_devices);
	143
	144	return target_dev;
	145	}
	146
c609719b WD	147	int eth_get_dev_index (void)
	148	{
	149	struct eth_device *dev;
	150	int num = 0;
	151
	152	if (!eth_devices) {
	153	return (-1);
	154	}
	155
	156	for (dev = eth_devices; dev; dev = dev->next) {
	157	if (dev == eth_current)
	158	break;
	159	++num;
	160	}
	161
	162	if (dev) {
	163	return (num);
	164	}
	165
	166	return (0);
	167	}
	168
	169	int eth_register(struct eth_device* dev)
	170	{
	171	struct eth_device *d;
	172
	173	if (!eth_devices) {
	174	eth_current = eth_devices = dev;
a3d991bd WD	175	#ifdef CONFIG_NET_MULTI
	176	/* update current ethernet name */
	177	{
	178	char *act = getenv("ethact");
	179	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	180	setenv("ethact", eth_current->name);
	181	}
	182	#endif
c609719b	183	} else {
aba4b69d DZ	184	for (d=eth_devices; d->next!=eth_devices; d=d->next)
aba4b69d DZ	185	;
c609719b WD	186	d->next = dev;
	187	}
	188
	189	dev->state = ETH_STATE_INIT;
	190	dev->next = eth_devices;
	191
	192	return 0;
	193	}
	194
	195	int eth_initialize(bd_t *bis)
	196	{
5ca2d095	197	unsigned char env_enetaddr[6];
3f6e6993	198	int eth_number = 0;
c609719b WD	199
	200	eth_devices = NULL;
	201	eth_current = NULL;
	202
fad63407	203	show_boot_progress (64);
643d1ab2	204	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	205	miiphy_init();
d9785c14 MB	206	#endif
dd35479a BW	207	/* Try board-specific initialization first. If it fails or isn't
	208	* present, try the cpu-specific initialization */
	209	if (board_eth_init(bis) < 0)
	210	cpu_eth_init(bis);
d9785c14	211
1eac2a71	212	#if defined(CONFIG_DB64360) \|\| defined(CONFIG_CPCI750)
3a473b2a WD	213	mv6436x_eth_initialize(bis);
3a473b2a WD	214	#endif
1eac2a71	215	#if defined(CONFIG_DB64460) \|\| defined(CONFIG_P3Mx)
3a473b2a	216	mv6446x_eth_initialize(bis);
c68a05fe	217	#endif
c609719b WD	218	if (!eth_devices) {
c609719b WD	219	puts ("No ethernet found.\n");
fad63407	220	show_boot_progress (-64);
c609719b WD	221	} else {
	222	struct eth_device *dev = eth_devices;
	223	char *ethprime = getenv ("ethprime");
	224
fad63407	225	show_boot_progress (65);
c609719b WD	226	do {
	227	if (eth_number)
	228	puts (", ");
	229
	230	printf("%s", dev->name);
	231
	232	if (ethprime && strcmp (dev->name, ethprime) == 0) {
	233	eth_current = dev;
	234	puts (" [PRIME]");
	235	}
	236
1384f3bb MF	237	if (strchr(dev->name, ' '))
	238	puts("\nWarning: eth device name has a space!\n");
	239
86848a74	240	eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
c609719b WD	241
	242	if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
	243	if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
	244	memcmp(dev->enetaddr, env_enetaddr, 6))
	245	{
baac607c WD	246	printf ("\nWarning: %s MAC addresses don't match:\n",
baac607c WD	247	dev->name);
3f6e6993 MF	248	printf ("Address in SROM is %pM\n",
	249	dev->enetaddr);
	250	printf ("Address in environment is %pM\n",
	251	env_enetaddr);
c609719b WD	252	}
	253
	254	memcpy(dev->enetaddr, env_enetaddr, 6);
	255	}
ecee9324 BW	256	if (dev->write_hwaddr &&
	257	!eth_mac_skip(eth_number) &&
	258	is_valid_ether_addr(dev->enetaddr)) {
	259	dev->write_hwaddr(dev);
	260	}
c609719b WD	261
	262	eth_number++;
	263	dev = dev->next;
	264	} while(dev != eth_devices);
	265
a3d991bd WD	266	/* update current ethernet name */
	267	if (eth_current) {
	268	char *act = getenv("ethact");
	269	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	270	setenv("ethact", eth_current->name);
	271	} else
	272	setenv("ethact", NULL);
a3d991bd	273
c609719b WD	274	putc ('\n');
	275	}
	276
	277	return eth_number;
	278	}
	279
53a5c424 DU	280	#ifdef CONFIG_MCAST_TFTP
	281	/* Multicast.
	282	* mcast_addr: multicast ipaddr from which multicast Mac is made
85eb5caf	283	* join: 1=join, 0=leave.
53a5c424 DU	284	*/
	285	int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
	286	{
	287	u8 mcast_mac[6];
85eb5caf	288	if (!eth_current \|\| !eth_current->mcast)
53a5c424 DU	289	return -1;
	290	mcast_mac[5] = htonl(mcast_ip) & 0xff;
	291	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
	292	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
	293	mcast_mac[2] = 0x5e;
	294	mcast_mac[1] = 0x0;
	295	mcast_mac[0] = 0x1;
	296	return eth_current->mcast(eth_current, mcast_mac, join);
	297	}
	298
85eb5caf WD	299	/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
85eb5caf WD	300	* and this is the ethernet-crc method needed for TSEC -- and perhaps
53a5c424 DU	301	* some other adapter -- hash tables
	302	*/
	303	#define CRCPOLY_LE 0xedb88320
	304	u32 ether_crc (size_t len, unsigned char const *p)
	305	{
	306	int i;
	307	u32 crc;
	308	crc = ~0;
	309	while (len--) {
	310	crc ^= *p++;
	311	for (i = 0; i < 8; i++)
	312	crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
	313	}
	314	/* an reverse the bits, cuz of way they arrive -- last-first */
	315	crc = (crc >> 16) \| (crc << 16);
	316	crc = (crc >> 8 & 0x00ff00ff) \| (crc << 8 & 0xff00ff00);
	317	crc = (crc >> 4 & 0x0f0f0f0f) \| (crc << 4 & 0xf0f0f0f0);
	318	crc = (crc >> 2 & 0x33333333) \| (crc << 2 & 0xcccccccc);
	319	crc = (crc >> 1 & 0x55555555) \| (crc << 1 & 0xaaaaaaaa);
	320	return crc;
	321	}
	322
	323	#endif
	324
c609719b WD	325
	326	int eth_init(bd_t *bis)
	327	{
86848a74 MF	328	int eth_number;
86848a74 MF	329	struct eth_device old_current, dev;
c609719b	330
6bc11388 SR	331	if (!eth_current) {
6bc11388 SR	332	puts ("No ethernet found.\n");
505be87a	333	return -1;
6bc11388	334	}
c609719b	335
86848a74 MF	336	/* Sync environment with network devices */
	337	eth_number = 0;
	338	dev = eth_devices;
	339	do {
	340	uchar env_enetaddr[6];
	341
	342	if (eth_getenv_enetaddr_by_index(eth_number, env_enetaddr))
	343	memcpy(dev->enetaddr, env_enetaddr, 6);
	344
	345	++eth_number;
	346	dev = dev->next;
	347	} while (dev != eth_devices);
	348
c609719b WD	349	old_current = eth_current;
c609719b WD	350	do {
0ebf04c6	351	debug("Trying %s\n", eth_current->name);
c609719b	352
422b1a01	353	if (eth_current->init(eth_current,bis) >= 0) {
c609719b WD	354	eth_current->state = ETH_STATE_ACTIVE;
c609719b WD	355
505be87a	356	return 0;
c609719b	357	}
0ebf04c6	358	debug("FAIL\n");
c609719b WD	359
	360	eth_try_another(0);
	361	} while (old_current != eth_current);
	362
505be87a	363	return -1;
c609719b WD	364	}
	365
	366	void eth_halt(void)
	367	{
	368	if (!eth_current)
	369	return;
	370
	371	eth_current->halt(eth_current);
	372
	373	eth_current->state = ETH_STATE_PASSIVE;
	374	}
	375
	376	int eth_send(volatile void *packet, int length)
	377	{
	378	if (!eth_current)
	379	return -1;
	380
	381	return eth_current->send(eth_current, packet, length);
	382	}
	383
	384	int eth_rx(void)
	385	{
	386	if (!eth_current)
	387	return -1;
	388
	389	return eth_current->recv(eth_current);
	390	}
	391
f85b6071 RJ	392	#ifdef CONFIG_API
	393	static void eth_save_packet(volatile void *packet, int length)
	394	{
	395	volatile char *p = packet;
	396	int i;
	397
	398	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
	399	return;
	400
	401	if (PKTSIZE < length)
	402	return;
	403
	404	for (i = 0; i < length; i++)
	405	eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
	406
	407	eth_rcv_bufs[eth_rcv_last].length = length;
	408	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
	409	}
	410
	411	int eth_receive(volatile void *packet, int length)
	412	{
	413	volatile char *p = packet;
	414	void *pp = push_packet;
	415	int i;
	416
	417	if (eth_rcv_current == eth_rcv_last) {
	418	push_packet = eth_save_packet;
	419	eth_rx();
	420	push_packet = pp;
	421
	422	if (eth_rcv_current == eth_rcv_last)
	423	return -1;
	424	}
	425
	426	if (length < eth_rcv_bufs[eth_rcv_current].length)
	427	return -1;
	428
	429	length = eth_rcv_bufs[eth_rcv_current].length;
	430
	431	for (i = 0; i < length; i++)
	432	p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
	433
	434	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	435	return length;
	436	}
	437	#endif /* CONFIG_API */
	438
c609719b WD	439	void eth_try_another(int first_restart)
	440	{
	441	static struct eth_device *first_failed = NULL;
68e1ede8	442	char ethrotate, act;
e1692577 MF	443
	444	/*
	445	* Do not rotate between network interfaces when
	446	* 'ethrotate' variable is set to 'no'.
	447	*/
	448	if (((ethrotate = getenv ("ethrotate")) != NULL) &&
	449	(strcmp(ethrotate, "no") == 0))
	450	return;
c609719b WD	451
	452	if (!eth_current)
	453	return;
	454
baac607c	455	if (first_restart) {
c609719b WD	456	first_failed = eth_current;
	457	}
	458
	459	eth_current = eth_current->next;
	460
a3d991bd	461	/* update current ethernet name */
68e1ede8 BW	462	act = getenv("ethact");
	463	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	464	setenv("ethact", eth_current->name);
a3d991bd	465
baac607c	466	if (first_failed == eth_current) {
c609719b WD	467	NetRestartWrap = 1;
	468	}
	469	}
	470
a3d991bd WD	471	void eth_set_current(void)
a3d991bd WD	472	{
da95427c HS	473	static char *act = NULL;
da95427c HS	474	static int env_changed_id = 0;
a3d991bd	475	struct eth_device* old_current;
2f70c49e	476	int env_id;
a3d991bd WD	477
	478	if (!eth_current) /* XXX no current */
	479	return;
	480
2f70c49e HS	481	env_id = get_env_id();
	482	if ((act == NULL) \|\| (env_changed_id != env_id)) {
	483	act = getenv("ethact");
	484	env_changed_id = env_id;
	485	}
a3d991bd WD	486	if (act != NULL) {
	487	old_current = eth_current;
	488	do {
	489	if (strcmp(eth_current->name, act) == 0)
	490	return;
	491	eth_current = eth_current->next;
	492	} while (old_current != eth_current);
	493	}
	494
	495	setenv("ethact", eth_current->name);
	496	}
a3d991bd	497
5bb226e8 WD	498	char *eth_get_name (void)
	499	{
	500	return (eth_current ? eth_current->name : "unknown");
	501	}
6ac59c55 MF	502
6ac59c55 MF	503	#else /* !CONFIG_NET_MULTI */
63ff004c	504
3bd0a877 BW	505	#warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
3bd0a877 BW	506
63ff004c	507	extern int at91rm9200_miiphy_initialize(bd_t *bis);
63ff004c MB	508	extern int mcf52x2_miiphy_initialize(bd_t *bis);
63ff004c MB	509	extern int ns7520_miiphy_initialize(bd_t *bis);
c74b2108	510
63ff004c MB	511
	512	int eth_initialize(bd_t *bis)
	513	{
643d1ab2	514	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	515	miiphy_init();
	516	#endif
	517
63ff004c MB	518	#if defined(CONFIG_AT91RM9200)
	519	at91rm9200_miiphy_initialize(bis);
	520	#endif
63ff004c MB	521	#if defined(CONFIG_MCF52x2)
	522	mcf52x2_miiphy_initialize(bis);
	523	#endif
25dbe98a	524	#if defined(CONFIG_DRIVER_NS7520_ETHERNET)
63ff004c MB	525	ns7520_miiphy_initialize(bis);
	526	#endif
	527	return 0;
	528	}
c609719b	529	#endif