[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

/*
 * 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)
{
	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]");
			}

			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);
			}

			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;
}

#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;

#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)
{
	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);
}
#endif

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