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

/*
 * (C) Copyright 2001-2004
 * 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>

#ifdef CONFIG_CMD_NET
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);
}
#endif

#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)

static char *act = NULL;
static int  env_changed_id = 0;

/*
 * 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(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)
{
	char enetvar[32];
	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]");
			}

			sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
			eth_getenv_enetaddr(enetvar, 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);
			}

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

#ifdef CONFIG_NET_MULTI
		/* 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);
#endif

		putc ('\n');
	}

	return eth_number;
}

void eth_set_enetaddr(int num, char *addr) {
	struct eth_device *dev;
	unsigned char enetaddr[6];

	debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);

	if (!eth_devices)
		return;

	eth_parse_enetaddr(addr, enetaddr);

	dev = eth_devices;
	while(num-- > 0) {
		dev = dev->next;

		if (dev == eth_devices)
			return;
	}

	debug ( "Setting new HW address on %s\n"
		"New Address is             %pM\n",
		dev->name, enetaddr);

	memcpy(dev->enetaddr, enetaddr, 6);
}
#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)
{
	struct eth_device* old_current;

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

	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;

	/*
	 * 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;

#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

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

#ifdef CONFIG_NET_MULTI
void eth_set_current(void)
{
	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);
}
#endif

char *eth_get_name (void)
{
	return (eth_current ? eth_current->name : "unknown");
}
#elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)

extern int at91rm9200_miiphy_initialize(bd_t *bis);
extern int emac4xx_miiphy_initialize(bd_t *bis);
extern int mcf52x2_miiphy_initialize(bd_t *bis);
extern int ns7520_miiphy_initialize(bd_t *bis);
extern int davinci_eth_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_PPC4xx_EMAC)
	emac4xx_miiphy_initialize(bis);
#endif
#if defined(CONFIG_MCF52x2)
	mcf52x2_miiphy_initialize(bis);
#endif
#if defined(CONFIG_DRIVER_NS7520_ETHERNET)
	ns7520_miiphy_initialize(bis);
#endif
#if defined(CONFIG_DRIVER_TI_EMAC)
	davinci_eth_miiphy_initialize(bis);
#endif
	return 0;
}
#endif
Commit	Line	Data
c609719b	1	/*
d4ca31c4	2	* (C) Copyright 2001-2004
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	#ifdef CONFIG_CMD_NET
	30	void eth_parse_enetaddr(const char addr, uchar enetaddr)
	31	{
	32	char *end;
	33	int i;
	34
	35	for (i = 0; i < 6; ++i) {
	36	enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
	37	if (addr)
	38	addr = (*end) ? end + 1 : end;
	39	}
	40	}
	41
	42	int eth_getenv_enetaddr(char name, uchar enetaddr)
	43	{
	44	eth_parse_enetaddr(getenv(name), enetaddr);
	45	return is_valid_ether_addr(enetaddr);
	46	}
	47
	48	int eth_setenv_enetaddr(char name, const uchar enetaddr)
	49	{
	50	char buf[20];
	51
	52	sprintf(buf, "%pM", enetaddr);
	53
	54	return setenv(name, buf);
	55	}
	56	#endif
	57
643d1ab2	58	#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
c609719b	59
2f70c49e HS	60	static char *act = NULL;
	61	static int env_changed_id = 0;
	62
dd35479a BW	63	/*
	64	* CPU and board-specific Ethernet initializations. Aliased function
	65	* signals caller to move on
	66	*/
	67	static int __def_eth_init(bd_t *bis)
	68	{
	69	return -1;
	70	}
f9a109b3 PT	71	int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
f9a109b3 PT	72	int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
dd35479a	73
3a473b2a WD	74	extern int mv6436x_eth_initialize(bd_t *);
3a473b2a WD	75	extern int mv6446x_eth_initialize(bd_t *);
c609719b	76
f85b6071 RJ	77	#ifdef CONFIG_API
	78	extern void (push_packet)(volatile void , int);
	79
	80	static struct {
	81	uchar data[PKTSIZE];
	82	int length;
	83	} eth_rcv_bufs[PKTBUFSRX];
	84
	85	static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
	86	#endif
	87
c609719b WD	88	static struct eth_device eth_devices, eth_current;
	89
	90	struct eth_device *eth_get_dev(void)
	91	{
	92	return eth_current;
	93	}
	94
63ff004c MB	95	struct eth_device eth_get_dev_by_name(char devname)
	96	{
	97	struct eth_device dev, target_dev;
	98
	99	if (!eth_devices)
	100	return NULL;
	101
	102	dev = eth_devices;
	103	target_dev = NULL;
	104	do {
	105	if (strcmp(devname, dev->name) == 0) {
	106	target_dev = dev;
	107	break;
	108	}
	109	dev = dev->next;
	110	} while (dev != eth_devices);
	111
	112	return target_dev;
	113	}
	114
9e56986a AF	115	struct eth_device *eth_get_dev_by_index(int index)
	116	{
	117	struct eth_device dev, target_dev;
	118	int idx = 0;
	119
	120	if (!eth_devices)
	121	return NULL;
	122
	123	dev = eth_devices;
	124	target_dev = NULL;
	125	do {
	126	if (idx == index) {
	127	target_dev = dev;
	128	break;
	129	}
	130	dev = dev->next;
	131	idx++;
	132	} while (dev != eth_devices);
	133
	134	return target_dev;
	135	}
	136
c609719b WD	137	int eth_get_dev_index (void)
	138	{
	139	struct eth_device *dev;
	140	int num = 0;
	141
	142	if (!eth_devices) {
	143	return (-1);
	144	}
	145
	146	for (dev = eth_devices; dev; dev = dev->next) {
	147	if (dev == eth_current)
	148	break;
	149	++num;
	150	}
	151
	152	if (dev) {
	153	return (num);
	154	}
	155
	156	return (0);
	157	}
	158
	159	int eth_register(struct eth_device* dev)
	160	{
	161	struct eth_device *d;
	162
	163	if (!eth_devices) {
	164	eth_current = eth_devices = dev;
a3d991bd WD	165	#ifdef CONFIG_NET_MULTI
	166	/* update current ethernet name */
	167	{
	168	char *act = getenv("ethact");
	169	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	170	setenv("ethact", eth_current->name);
	171	}
	172	#endif
c609719b WD	173	} else {
	174	for (d=eth_devices; d->next!=eth_devices; d=d->next);
	175	d->next = dev;
	176	}
	177
	178	dev->state = ETH_STATE_INIT;
	179	dev->next = eth_devices;
	180
	181	return 0;
	182	}
	183
	184	int eth_initialize(bd_t *bis)
	185	{
5ca2d095 SK	186	char enetvar[32];
5ca2d095 SK	187	unsigned char env_enetaddr[6];
3f6e6993	188	int eth_number = 0;
c609719b WD	189
	190	eth_devices = NULL;
	191	eth_current = NULL;
	192
fad63407	193	show_boot_progress (64);
643d1ab2	194	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	195	miiphy_init();
d9785c14 MB	196	#endif
dd35479a BW	197	/* Try board-specific initialization first. If it fails or isn't
	198	* present, try the cpu-specific initialization */
	199	if (board_eth_init(bis) < 0)
	200	cpu_eth_init(bis);
d9785c14	201
1eac2a71	202	#if defined(CONFIG_DB64360) \|\| defined(CONFIG_CPCI750)
3a473b2a WD	203	mv6436x_eth_initialize(bis);
3a473b2a WD	204	#endif
1eac2a71	205	#if defined(CONFIG_DB64460) \|\| defined(CONFIG_P3Mx)
3a473b2a	206	mv6446x_eth_initialize(bis);
c68a05fe	207	#endif
c609719b WD	208	if (!eth_devices) {
c609719b WD	209	puts ("No ethernet found.\n");
fad63407	210	show_boot_progress (-64);
c609719b WD	211	} else {
	212	struct eth_device *dev = eth_devices;
	213	char *ethprime = getenv ("ethprime");
	214
fad63407	215	show_boot_progress (65);
c609719b WD	216	do {
	217	if (eth_number)
	218	puts (", ");
	219
	220	printf("%s", dev->name);
	221
	222	if (ethprime && strcmp (dev->name, ethprime) == 0) {
	223	eth_current = dev;
	224	puts (" [PRIME]");
	225	}
	226
	227	sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
3f6e6993	228	eth_getenv_enetaddr(enetvar, env_enetaddr);
c609719b WD	229
	230	if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
	231	if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
	232	memcmp(dev->enetaddr, env_enetaddr, 6))
	233	{
baac607c WD	234	printf ("\nWarning: %s MAC addresses don't match:\n",
baac607c WD	235	dev->name);
3f6e6993 MF	236	printf ("Address in SROM is %pM\n",
	237	dev->enetaddr);
	238	printf ("Address in environment is %pM\n",
	239	env_enetaddr);
c609719b WD	240	}
	241
	242	memcpy(dev->enetaddr, env_enetaddr, 6);
	243	}
	244
	245	eth_number++;
	246	dev = dev->next;
	247	} while(dev != eth_devices);
	248
a3d991bd WD	249	#ifdef CONFIG_NET_MULTI
	250	/* update current ethernet name */
	251	if (eth_current) {
	252	char *act = getenv("ethact");
	253	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	254	setenv("ethact", eth_current->name);
	255	} else
	256	setenv("ethact", NULL);
	257	#endif
	258
c609719b WD	259	putc ('\n');
	260	}
	261
	262	return eth_number;
	263	}
	264
	265	void eth_set_enetaddr(int num, char *addr) {
	266	struct eth_device *dev;
	267	unsigned char enetaddr[6];
c609719b	268
d4ca31c4 WD	269	debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
d4ca31c4 WD	270
c609719b WD	271	if (!eth_devices)
	272	return;
	273
3f6e6993	274	eth_parse_enetaddr(addr, enetaddr);
c609719b WD	275
	276	dev = eth_devices;
	277	while(num-- > 0) {
	278	dev = dev->next;
	279
	280	if (dev == eth_devices)
	281	return;
	282	}
	283
d4ca31c4	284	debug ( "Setting new HW address on %s\n"
3f6e6993 MF	285	"New Address is %pM\n",
3f6e6993 MF	286	dev->name, enetaddr);
c609719b WD	287
	288	memcpy(dev->enetaddr, enetaddr, 6);
	289	}
53a5c424 DU	290	#ifdef CONFIG_MCAST_TFTP
	291	/* Multicast.
	292	* mcast_addr: multicast ipaddr from which multicast Mac is made
85eb5caf	293	* join: 1=join, 0=leave.
53a5c424 DU	294	*/
	295	int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
	296	{
	297	u8 mcast_mac[6];
85eb5caf	298	if (!eth_current \|\| !eth_current->mcast)
53a5c424 DU	299	return -1;
	300	mcast_mac[5] = htonl(mcast_ip) & 0xff;
	301	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
	302	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
	303	mcast_mac[2] = 0x5e;
	304	mcast_mac[1] = 0x0;
	305	mcast_mac[0] = 0x1;
	306	return eth_current->mcast(eth_current, mcast_mac, join);
	307	}
	308
85eb5caf WD	309	/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
85eb5caf WD	310	* and this is the ethernet-crc method needed for TSEC -- and perhaps
53a5c424 DU	311	* some other adapter -- hash tables
	312	*/
	313	#define CRCPOLY_LE 0xedb88320
	314	u32 ether_crc (size_t len, unsigned char const *p)
	315	{
	316	int i;
	317	u32 crc;
	318	crc = ~0;
	319	while (len--) {
	320	crc ^= *p++;
	321	for (i = 0; i < 8; i++)
	322	crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
	323	}
	324	/* an reverse the bits, cuz of way they arrive -- last-first */
	325	crc = (crc >> 16) \| (crc << 16);
	326	crc = (crc >> 8 & 0x00ff00ff) \| (crc << 8 & 0xff00ff00);
	327	crc = (crc >> 4 & 0x0f0f0f0f) \| (crc << 4 & 0xf0f0f0f0);
	328	crc = (crc >> 2 & 0x33333333) \| (crc << 2 & 0xcccccccc);
	329	crc = (crc >> 1 & 0x55555555) \| (crc << 1 & 0xaaaaaaaa);
	330	return crc;
	331	}
	332
	333	#endif
	334
c609719b WD	335
	336	int eth_init(bd_t *bis)
	337	{
	338	struct eth_device* old_current;
	339
6bc11388 SR	340	if (!eth_current) {
6bc11388 SR	341	puts ("No ethernet found.\n");
505be87a	342	return -1;
6bc11388	343	}
c609719b WD	344
	345	old_current = eth_current;
	346	do {
d4ca31c4	347	debug ("Trying %s\n", eth_current->name);
c609719b	348
422b1a01	349	if (eth_current->init(eth_current,bis) >= 0) {
c609719b WD	350	eth_current->state = ETH_STATE_ACTIVE;
c609719b WD	351
505be87a	352	return 0;
c609719b	353	}
d4ca31c4	354	debug ("FAIL\n");
c609719b WD	355
	356	eth_try_another(0);
	357	} while (old_current != eth_current);
	358
505be87a	359	return -1;
c609719b WD	360	}
	361
	362	void eth_halt(void)
	363	{
	364	if (!eth_current)
	365	return;
	366
	367	eth_current->halt(eth_current);
	368
	369	eth_current->state = ETH_STATE_PASSIVE;
	370	}
	371
	372	int eth_send(volatile void *packet, int length)
	373	{
	374	if (!eth_current)
	375	return -1;
	376
	377	return eth_current->send(eth_current, packet, length);
	378	}
	379
	380	int eth_rx(void)
	381	{
	382	if (!eth_current)
	383	return -1;
	384
	385	return eth_current->recv(eth_current);
	386	}
	387
f85b6071 RJ	388	#ifdef CONFIG_API
	389	static void eth_save_packet(volatile void *packet, int length)
	390	{
	391	volatile char *p = packet;
	392	int i;
	393
	394	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
	395	return;
	396
	397	if (PKTSIZE < length)
	398	return;
	399
	400	for (i = 0; i < length; i++)
	401	eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
	402
	403	eth_rcv_bufs[eth_rcv_last].length = length;
	404	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
	405	}
	406
	407	int eth_receive(volatile void *packet, int length)
	408	{
	409	volatile char *p = packet;
	410	void *pp = push_packet;
	411	int i;
	412
	413	if (eth_rcv_current == eth_rcv_last) {
	414	push_packet = eth_save_packet;
	415	eth_rx();
	416	push_packet = pp;
	417
	418	if (eth_rcv_current == eth_rcv_last)
	419	return -1;
	420	}
	421
	422	if (length < eth_rcv_bufs[eth_rcv_current].length)
	423	return -1;
	424
	425	length = eth_rcv_bufs[eth_rcv_current].length;
	426
	427	for (i = 0; i < length; i++)
	428	p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
	429
	430	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	431	return length;
	432	}
	433	#endif /* CONFIG_API */
	434
c609719b WD	435	void eth_try_another(int first_restart)
	436	{
	437	static struct eth_device *first_failed = NULL;
e1692577 MF	438	char *ethrotate;
	439
	440	/*
	441	* Do not rotate between network interfaces when
	442	* 'ethrotate' variable is set to 'no'.
	443	*/
	444	if (((ethrotate = getenv ("ethrotate")) != NULL) &&
	445	(strcmp(ethrotate, "no") == 0))
	446	return;
c609719b WD	447
	448	if (!eth_current)
	449	return;
	450
baac607c	451	if (first_restart) {
c609719b WD	452	first_failed = eth_current;
	453	}
	454
	455	eth_current = eth_current->next;
	456
a3d991bd WD	457	#ifdef CONFIG_NET_MULTI
	458	/* update current ethernet name */
	459	{
	460	char *act = getenv("ethact");
	461	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	462	setenv("ethact", eth_current->name);
	463	}
	464	#endif
	465
baac607c	466	if (first_failed == eth_current) {
c609719b WD	467	NetRestartWrap = 1;
	468	}
	469	}
	470
a3d991bd WD	471	#ifdef CONFIG_NET_MULTI
	472	void eth_set_current(void)
	473	{
a3d991bd	474	struct eth_device* old_current;
2f70c49e	475	int env_id;
a3d991bd WD	476
	477	if (!eth_current) /* XXX no current */
	478	return;
	479
2f70c49e HS	480	env_id = get_env_id();
	481	if ((act == NULL) \|\| (env_changed_id != env_id)) {
	482	act = getenv("ethact");
	483	env_changed_id = env_id;
	484	}
a3d991bd WD	485	if (act != NULL) {
	486	old_current = eth_current;
	487	do {
	488	if (strcmp(eth_current->name, act) == 0)
	489	return;
	490	eth_current = eth_current->next;
	491	} while (old_current != eth_current);
	492	}
	493
	494	setenv("ethact", eth_current->name);
	495	}
	496	#endif
	497
5bb226e8 WD	498	char *eth_get_name (void)
	499	{
	500	return (eth_current ? eth_current->name : "unknown");
	501	}
643d1ab2	502	#elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
63ff004c MB	503
	504	extern int at91rm9200_miiphy_initialize(bd_t *bis);
	505	extern int emac4xx_miiphy_initialize(bd_t *bis);
	506	extern int mcf52x2_miiphy_initialize(bd_t *bis);
	507	extern int ns7520_miiphy_initialize(bd_t *bis);
d6e04258	508	extern int davinci_eth_miiphy_initialize(bd_t *bis);
c74b2108	509
63ff004c MB	510
	511	int eth_initialize(bd_t *bis)
	512	{
643d1ab2	513	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	514	miiphy_init();
	515	#endif
	516
63ff004c MB	517	#if defined(CONFIG_AT91RM9200)
	518	at91rm9200_miiphy_initialize(bis);
	519	#endif
96e21f86	520	#if defined(CONFIG_PPC4xx_EMAC)
63ff004c MB	521	emac4xx_miiphy_initialize(bis);
	522	#endif
	523	#if defined(CONFIG_MCF52x2)
	524	mcf52x2_miiphy_initialize(bis);
	525	#endif
25dbe98a	526	#if defined(CONFIG_DRIVER_NS7520_ETHERNET)
63ff004c	527	ns7520_miiphy_initialize(bis);
c74b2108 SK	528	#endif
c74b2108 SK	529	#if defined(CONFIG_DRIVER_TI_EMAC)
fcaac589	530	davinci_eth_miiphy_initialize(bis);
63ff004c MB	531	#endif
	532	return 0;
	533	}
c609719b	534	#endif