[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);
}

static void eth_current_changed(void)
{
#ifdef CONFIG_NET_MULTI
	{
		char *act = getenv("ethact");
		/* update current ethernet name */
		if (eth_current)
		{
			if (act == NULL || strcmp(act, eth_current->name) != 0)
				setenv("ethact", eth_current->name);
		}
		/*
		 * remove the variable completely if there is no active
		 * interface
		 */
		else if (act != NULL)
			setenv("ethact", NULL);
	}
#endif
}

int eth_register(struct eth_device *dev)
{
	struct eth_device *d;
	if (!eth_devices) {
		eth_current = eth_devices = dev;
		eth_current_changed();
	} 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
	/*
	 * If board-specific initialization exists, call it.
	 * If not, call a CPU-specific one
	 */
	if (board_eth_init != __def_eth_init) {
		if (board_eth_init(bis) < 0)
			printf("Board Net Initialization Failed\n");
	} else if (cpu_eth_init != __def_eth_init) {
		if (cpu_eth_init(bis) < 0)
			printf("CPU Net Initialization Failed\n");
	} else
		printf("Net Initialization Skipped\n");

#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);

		eth_current_changed();
		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;

	/*
	 * 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;

	eth_current_changed();

	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);
	}

	eth_current_changed();
}

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
89d48367	169	static void eth_current_changed(void)
c609719b	170	{
a3d991bd	171	#ifdef CONFIG_NET_MULTI
89d48367 SG	172	{
89d48367 SG	173	char *act = getenv("ethact");
a3d991bd	174	/* update current ethernet name */
89d48367	175	if (eth_current)
a3d991bd	176	{
a3d991bd WD	177	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	178	setenv("ethact", eth_current->name);
	179	}
89d48367 SG	180	/*
	181	* remove the variable completely if there is no active
	182	* interface
	183	*/
	184	else if (act != NULL)
	185	setenv("ethact", NULL);
	186	}
a3d991bd	187	#endif
89d48367 SG	188	}
	189
	190	int eth_register(struct eth_device *dev)
	191	{
	192	struct eth_device *d;
	193	if (!eth_devices) {
	194	eth_current = eth_devices = dev;
	195	eth_current_changed();
c609719b	196	} else {
aba4b69d DZ	197	for (d=eth_devices; d->next!=eth_devices; d=d->next)
aba4b69d DZ	198	;
c609719b WD	199	d->next = dev;
	200	}
	201
	202	dev->state = ETH_STATE_INIT;
	203	dev->next = eth_devices;
	204
	205	return 0;
	206	}
	207
	208	int eth_initialize(bd_t *bis)
	209	{
5ca2d095	210	unsigned char env_enetaddr[6];
3f6e6993	211	int eth_number = 0;
c609719b WD	212
	213	eth_devices = NULL;
	214	eth_current = NULL;
	215
fad63407	216	show_boot_progress (64);
643d1ab2	217	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	218	miiphy_init();
d9785c14 MB	219	#endif
8ad25bf8 BW	220	/*
	221	* If board-specific initialization exists, call it.
	222	* If not, call a CPU-specific one
	223	*/
	224	if (board_eth_init != __def_eth_init) {
	225	if (board_eth_init(bis) < 0)
	226	printf("Board Net Initialization Failed\n");
	227	} else if (cpu_eth_init != __def_eth_init) {
	228	if (cpu_eth_init(bis) < 0)
	229	printf("CPU Net Initialization Failed\n");
	230	} else
	231	printf("Net Initialization Skipped\n");
d9785c14	232
1eac2a71	233	#if defined(CONFIG_DB64360) \|\| defined(CONFIG_CPCI750)
3a473b2a WD	234	mv6436x_eth_initialize(bis);
3a473b2a WD	235	#endif
1eac2a71	236	#if defined(CONFIG_DB64460) \|\| defined(CONFIG_P3Mx)
3a473b2a	237	mv6446x_eth_initialize(bis);
c68a05fe	238	#endif
c609719b WD	239	if (!eth_devices) {
c609719b WD	240	puts ("No ethernet found.\n");
fad63407	241	show_boot_progress (-64);
c609719b WD	242	} else {
	243	struct eth_device *dev = eth_devices;
	244	char *ethprime = getenv ("ethprime");
	245
fad63407	246	show_boot_progress (65);
c609719b WD	247	do {
	248	if (eth_number)
	249	puts (", ");
	250
	251	printf("%s", dev->name);
	252
	253	if (ethprime && strcmp (dev->name, ethprime) == 0) {
	254	eth_current = dev;
	255	puts (" [PRIME]");
	256	}
	257
1384f3bb MF	258	if (strchr(dev->name, ' '))
	259	puts("\nWarning: eth device name has a space!\n");
	260
86848a74	261	eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
c609719b WD	262
	263	if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
	264	if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
	265	memcmp(dev->enetaddr, env_enetaddr, 6))
	266	{
baac607c WD	267	printf ("\nWarning: %s MAC addresses don't match:\n",
baac607c WD	268	dev->name);
3f6e6993 MF	269	printf ("Address in SROM is %pM\n",
	270	dev->enetaddr);
	271	printf ("Address in environment is %pM\n",
	272	env_enetaddr);
c609719b WD	273	}
	274
	275	memcpy(dev->enetaddr, env_enetaddr, 6);
	276	}
ecee9324 BW	277	if (dev->write_hwaddr &&
	278	!eth_mac_skip(eth_number) &&
	279	is_valid_ether_addr(dev->enetaddr)) {
	280	dev->write_hwaddr(dev);
	281	}
c609719b WD	282
	283	eth_number++;
	284	dev = dev->next;
	285	} while(dev != eth_devices);
	286
89d48367	287	eth_current_changed();
c609719b WD	288	putc ('\n');
	289	}
	290
	291	return eth_number;
	292	}
	293
53a5c424 DU	294	#ifdef CONFIG_MCAST_TFTP
	295	/* Multicast.
	296	* mcast_addr: multicast ipaddr from which multicast Mac is made
85eb5caf	297	* join: 1=join, 0=leave.
53a5c424 DU	298	*/
	299	int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
	300	{
	301	u8 mcast_mac[6];
85eb5caf	302	if (!eth_current \|\| !eth_current->mcast)
53a5c424 DU	303	return -1;
	304	mcast_mac[5] = htonl(mcast_ip) & 0xff;
	305	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
	306	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
	307	mcast_mac[2] = 0x5e;
	308	mcast_mac[1] = 0x0;
	309	mcast_mac[0] = 0x1;
	310	return eth_current->mcast(eth_current, mcast_mac, join);
	311	}
	312
85eb5caf WD	313	/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
85eb5caf WD	314	* and this is the ethernet-crc method needed for TSEC -- and perhaps
53a5c424 DU	315	* some other adapter -- hash tables
	316	*/
	317	#define CRCPOLY_LE 0xedb88320
	318	u32 ether_crc (size_t len, unsigned char const *p)
	319	{
	320	int i;
	321	u32 crc;
	322	crc = ~0;
	323	while (len--) {
	324	crc ^= *p++;
	325	for (i = 0; i < 8; i++)
	326	crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
	327	}
	328	/* an reverse the bits, cuz of way they arrive -- last-first */
	329	crc = (crc >> 16) \| (crc << 16);
	330	crc = (crc >> 8 & 0x00ff00ff) \| (crc << 8 & 0xff00ff00);
	331	crc = (crc >> 4 & 0x0f0f0f0f) \| (crc << 4 & 0xf0f0f0f0);
	332	crc = (crc >> 2 & 0x33333333) \| (crc << 2 & 0xcccccccc);
	333	crc = (crc >> 1 & 0x55555555) \| (crc << 1 & 0xaaaaaaaa);
	334	return crc;
	335	}
	336
	337	#endif
	338
c609719b WD	339
	340	int eth_init(bd_t *bis)
	341	{
86848a74 MF	342	int eth_number;
86848a74 MF	343	struct eth_device old_current, dev;
c609719b	344
6bc11388 SR	345	if (!eth_current) {
6bc11388 SR	346	puts ("No ethernet found.\n");
505be87a	347	return -1;
6bc11388	348	}
c609719b	349
86848a74 MF	350	/* Sync environment with network devices */
	351	eth_number = 0;
	352	dev = eth_devices;
	353	do {
	354	uchar env_enetaddr[6];
	355
	356	if (eth_getenv_enetaddr_by_index(eth_number, env_enetaddr))
	357	memcpy(dev->enetaddr, env_enetaddr, 6);
	358
	359	++eth_number;
	360	dev = dev->next;
	361	} while (dev != eth_devices);
	362
c609719b WD	363	old_current = eth_current;
c609719b WD	364	do {
0ebf04c6	365	debug("Trying %s\n", eth_current->name);
c609719b	366
422b1a01	367	if (eth_current->init(eth_current,bis) >= 0) {
c609719b WD	368	eth_current->state = ETH_STATE_ACTIVE;
c609719b WD	369
505be87a	370	return 0;
c609719b	371	}
0ebf04c6	372	debug("FAIL\n");
c609719b WD	373
	374	eth_try_another(0);
	375	} while (old_current != eth_current);
	376
505be87a	377	return -1;
c609719b WD	378	}
	379
	380	void eth_halt(void)
	381	{
	382	if (!eth_current)
	383	return;
	384
	385	eth_current->halt(eth_current);
	386
	387	eth_current->state = ETH_STATE_PASSIVE;
	388	}
	389
	390	int eth_send(volatile void *packet, int length)
	391	{
	392	if (!eth_current)
	393	return -1;
	394
	395	return eth_current->send(eth_current, packet, length);
	396	}
	397
	398	int eth_rx(void)
	399	{
	400	if (!eth_current)
	401	return -1;
	402
	403	return eth_current->recv(eth_current);
	404	}
	405
f85b6071 RJ	406	#ifdef CONFIG_API
	407	static void eth_save_packet(volatile void *packet, int length)
	408	{
	409	volatile char *p = packet;
	410	int i;
	411
	412	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
	413	return;
	414
	415	if (PKTSIZE < length)
	416	return;
	417
	418	for (i = 0; i < length; i++)
	419	eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
	420
	421	eth_rcv_bufs[eth_rcv_last].length = length;
	422	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
	423	}
	424
	425	int eth_receive(volatile void *packet, int length)
	426	{
	427	volatile char *p = packet;
	428	void *pp = push_packet;
	429	int i;
	430
	431	if (eth_rcv_current == eth_rcv_last) {
	432	push_packet = eth_save_packet;
	433	eth_rx();
	434	push_packet = pp;
	435
	436	if (eth_rcv_current == eth_rcv_last)
	437	return -1;
	438	}
	439
	440	if (length < eth_rcv_bufs[eth_rcv_current].length)
	441	return -1;
	442
	443	length = eth_rcv_bufs[eth_rcv_current].length;
	444
	445	for (i = 0; i < length; i++)
	446	p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
	447
	448	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	449	return length;
	450	}
	451	#endif /* CONFIG_API */
	452
c609719b WD	453	void eth_try_another(int first_restart)
	454	{
	455	static struct eth_device *first_failed = NULL;
c650e1be	456	char *ethrotate;
e1692577 MF	457
	458	/*
	459	* Do not rotate between network interfaces when
	460	* 'ethrotate' variable is set to 'no'.
	461	*/
	462	if (((ethrotate = getenv ("ethrotate")) != NULL) &&
	463	(strcmp(ethrotate, "no") == 0))
	464	return;
c609719b WD	465
	466	if (!eth_current)
	467	return;
	468
baac607c	469	if (first_restart) {
c609719b WD	470	first_failed = eth_current;
	471	}
	472
	473	eth_current = eth_current->next;
	474
89d48367	475	eth_current_changed();
a3d991bd	476
baac607c	477	if (first_failed == eth_current) {
c609719b WD	478	NetRestartWrap = 1;
	479	}
	480	}
	481
a3d991bd WD	482	void eth_set_current(void)
a3d991bd WD	483	{
da95427c HS	484	static char *act = NULL;
da95427c HS	485	static int env_changed_id = 0;
a3d991bd	486	struct eth_device* old_current;
2f70c49e	487	int env_id;
a3d991bd WD	488
	489	if (!eth_current) /* XXX no current */
	490	return;
	491
2f70c49e HS	492	env_id = get_env_id();
	493	if ((act == NULL) \|\| (env_changed_id != env_id)) {
	494	act = getenv("ethact");
	495	env_changed_id = env_id;
	496	}
a3d991bd WD	497	if (act != NULL) {
	498	old_current = eth_current;
	499	do {
	500	if (strcmp(eth_current->name, act) == 0)
	501	return;
	502	eth_current = eth_current->next;
	503	} while (old_current != eth_current);
	504	}
	505
89d48367	506	eth_current_changed();
a3d991bd	507	}
a3d991bd	508
5bb226e8 WD	509	char *eth_get_name (void)
	510	{
	511	return (eth_current ? eth_current->name : "unknown");
	512	}
6ac59c55 MF	513
6ac59c55 MF	514	#else /* !CONFIG_NET_MULTI */
63ff004c	515
3bd0a877 BW	516	#warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
3bd0a877 BW	517
63ff004c	518	extern int at91rm9200_miiphy_initialize(bd_t *bis);
63ff004c MB	519	extern int mcf52x2_miiphy_initialize(bd_t *bis);
63ff004c MB	520	extern int ns7520_miiphy_initialize(bd_t *bis);
c74b2108	521
63ff004c MB	522
	523	int eth_initialize(bd_t *bis)
	524	{
643d1ab2	525	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	526	miiphy_init();
	527	#endif
	528
63ff004c MB	529	#if defined(CONFIG_AT91RM9200)
	530	at91rm9200_miiphy_initialize(bis);
	531	#endif
63ff004c MB	532	#if defined(CONFIG_MCF52x2)
	533	mcf52x2_miiphy_initialize(bis);
	534	#endif
25dbe98a	535	#if defined(CONFIG_DRIVER_NS7520_ETHERNET)
63ff004c MB	536	ns7520_miiphy_initialize(bis);
	537	#endif
	538	return 0;
	539	}
c609719b	540	#endif