[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)

/*
 * 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)
{
	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");
}
#elif defined(CONFIG_CMD_NET) && !defined(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	/*
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
dd35479a BW	60	/*
	61	* CPU and board-specific Ethernet initializations. Aliased function
	62	* signals caller to move on
	63	*/
	64	static int __def_eth_init(bd_t *bis)
	65	{
	66	return -1;
	67	}
f9a109b3 PT	68	int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
f9a109b3 PT	69	int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
dd35479a	70
3a473b2a WD	71	extern int mv6436x_eth_initialize(bd_t *);
3a473b2a WD	72	extern int mv6446x_eth_initialize(bd_t *);
c609719b	73
f85b6071 RJ	74	#ifdef CONFIG_API
	75	extern void (push_packet)(volatile void , int);
	76
	77	static struct {
	78	uchar data[PKTSIZE];
	79	int length;
	80	} eth_rcv_bufs[PKTBUFSRX];
	81
	82	static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
	83	#endif
	84
c609719b WD	85	static struct eth_device eth_devices, eth_current;
	86
	87	struct eth_device *eth_get_dev(void)
	88	{
	89	return eth_current;
	90	}
	91
63ff004c MB	92	struct eth_device eth_get_dev_by_name(char devname)
	93	{
	94	struct eth_device dev, target_dev;
	95
	96	if (!eth_devices)
	97	return NULL;
	98
	99	dev = eth_devices;
	100	target_dev = NULL;
	101	do {
	102	if (strcmp(devname, dev->name) == 0) {
	103	target_dev = dev;
	104	break;
	105	}
	106	dev = dev->next;
	107	} while (dev != eth_devices);
	108
	109	return target_dev;
	110	}
	111
9e56986a AF	112	struct eth_device *eth_get_dev_by_index(int index)
	113	{
	114	struct eth_device dev, target_dev;
	115	int idx = 0;
	116
	117	if (!eth_devices)
	118	return NULL;
	119
	120	dev = eth_devices;
	121	target_dev = NULL;
	122	do {
	123	if (idx == index) {
	124	target_dev = dev;
	125	break;
	126	}
	127	dev = dev->next;
	128	idx++;
	129	} while (dev != eth_devices);
	130
	131	return target_dev;
	132	}
	133
c609719b WD	134	int eth_get_dev_index (void)
	135	{
	136	struct eth_device *dev;
	137	int num = 0;
	138
	139	if (!eth_devices) {
	140	return (-1);
	141	}
	142
	143	for (dev = eth_devices; dev; dev = dev->next) {
	144	if (dev == eth_current)
	145	break;
	146	++num;
	147	}
	148
	149	if (dev) {
	150	return (num);
	151	}
	152
	153	return (0);
	154	}
	155
	156	int eth_register(struct eth_device* dev)
	157	{
	158	struct eth_device *d;
	159
	160	if (!eth_devices) {
	161	eth_current = eth_devices = dev;
a3d991bd WD	162	#ifdef CONFIG_NET_MULTI
	163	/* update current ethernet name */
	164	{
	165	char *act = getenv("ethact");
	166	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	167	setenv("ethact", eth_current->name);
	168	}
	169	#endif
c609719b WD	170	} else {
	171	for (d=eth_devices; d->next!=eth_devices; d=d->next);
	172	d->next = dev;
	173	}
	174
	175	dev->state = ETH_STATE_INIT;
	176	dev->next = eth_devices;
	177
	178	return 0;
	179	}
	180
	181	int eth_initialize(bd_t *bis)
	182	{
5ca2d095 SK	183	char enetvar[32];
5ca2d095 SK	184	unsigned char env_enetaddr[6];
3f6e6993	185	int eth_number = 0;
c609719b WD	186
	187	eth_devices = NULL;
	188	eth_current = NULL;
	189
fad63407	190	show_boot_progress (64);
643d1ab2	191	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	192	miiphy_init();
d9785c14 MB	193	#endif
dd35479a BW	194	/* Try board-specific initialization first. If it fails or isn't
	195	* present, try the cpu-specific initialization */
	196	if (board_eth_init(bis) < 0)
	197	cpu_eth_init(bis);
d9785c14	198
1eac2a71	199	#if defined(CONFIG_DB64360) \|\| defined(CONFIG_CPCI750)
3a473b2a WD	200	mv6436x_eth_initialize(bis);
3a473b2a WD	201	#endif
1eac2a71	202	#if defined(CONFIG_DB64460) \|\| defined(CONFIG_P3Mx)
3a473b2a	203	mv6446x_eth_initialize(bis);
c68a05fe	204	#endif
c609719b WD	205	if (!eth_devices) {
c609719b WD	206	puts ("No ethernet found.\n");
fad63407	207	show_boot_progress (-64);
c609719b WD	208	} else {
	209	struct eth_device *dev = eth_devices;
	210	char *ethprime = getenv ("ethprime");
	211
fad63407	212	show_boot_progress (65);
c609719b WD	213	do {
	214	if (eth_number)
	215	puts (", ");
	216
	217	printf("%s", dev->name);
	218
	219	if (ethprime && strcmp (dev->name, ethprime) == 0) {
	220	eth_current = dev;
	221	puts (" [PRIME]");
	222	}
	223
	224	sprintf(enetvar, eth_number ? "eth%daddr" : "ethaddr", eth_number);
3f6e6993	225	eth_getenv_enetaddr(enetvar, env_enetaddr);
c609719b WD	226
	227	if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
	228	if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
	229	memcmp(dev->enetaddr, env_enetaddr, 6))
	230	{
baac607c WD	231	printf ("\nWarning: %s MAC addresses don't match:\n",
baac607c WD	232	dev->name);
3f6e6993 MF	233	printf ("Address in SROM is %pM\n",
	234	dev->enetaddr);
	235	printf ("Address in environment is %pM\n",
	236	env_enetaddr);
c609719b WD	237	}
	238
	239	memcpy(dev->enetaddr, env_enetaddr, 6);
	240	}
	241
	242	eth_number++;
	243	dev = dev->next;
	244	} while(dev != eth_devices);
	245
a3d991bd WD	246	#ifdef CONFIG_NET_MULTI
	247	/* update current ethernet name */
	248	if (eth_current) {
	249	char *act = getenv("ethact");
	250	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	251	setenv("ethact", eth_current->name);
	252	} else
	253	setenv("ethact", NULL);
	254	#endif
	255
c609719b WD	256	putc ('\n');
	257	}
	258
	259	return eth_number;
	260	}
	261
	262	void eth_set_enetaddr(int num, char *addr) {
	263	struct eth_device *dev;
	264	unsigned char enetaddr[6];
c609719b	265
d4ca31c4 WD	266	debug ("eth_set_enetaddr(num=%d, addr=%s)\n", num, addr);
d4ca31c4 WD	267
c609719b WD	268	if (!eth_devices)
	269	return;
	270
3f6e6993	271	eth_parse_enetaddr(addr, enetaddr);
c609719b WD	272
	273	dev = eth_devices;
	274	while(num-- > 0) {
	275	dev = dev->next;
	276
	277	if (dev == eth_devices)
	278	return;
	279	}
	280
d4ca31c4	281	debug ( "Setting new HW address on %s\n"
3f6e6993 MF	282	"New Address is %pM\n",
3f6e6993 MF	283	dev->name, enetaddr);
c609719b WD	284
	285	memcpy(dev->enetaddr, enetaddr, 6);
	286	}
53a5c424 DU	287	#ifdef CONFIG_MCAST_TFTP
	288	/* Multicast.
	289	* mcast_addr: multicast ipaddr from which multicast Mac is made
85eb5caf	290	* join: 1=join, 0=leave.
53a5c424 DU	291	*/
	292	int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
	293	{
	294	u8 mcast_mac[6];
85eb5caf	295	if (!eth_current \|\| !eth_current->mcast)
53a5c424 DU	296	return -1;
	297	mcast_mac[5] = htonl(mcast_ip) & 0xff;
	298	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
	299	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
	300	mcast_mac[2] = 0x5e;
	301	mcast_mac[1] = 0x0;
	302	mcast_mac[0] = 0x1;
	303	return eth_current->mcast(eth_current, mcast_mac, join);
	304	}
	305
85eb5caf WD	306	/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
85eb5caf WD	307	* and this is the ethernet-crc method needed for TSEC -- and perhaps
53a5c424 DU	308	* some other adapter -- hash tables
	309	*/
	310	#define CRCPOLY_LE 0xedb88320
	311	u32 ether_crc (size_t len, unsigned char const *p)
	312	{
	313	int i;
	314	u32 crc;
	315	crc = ~0;
	316	while (len--) {
	317	crc ^= *p++;
	318	for (i = 0; i < 8; i++)
	319	crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
	320	}
	321	/* an reverse the bits, cuz of way they arrive -- last-first */
	322	crc = (crc >> 16) \| (crc << 16);
	323	crc = (crc >> 8 & 0x00ff00ff) \| (crc << 8 & 0xff00ff00);
	324	crc = (crc >> 4 & 0x0f0f0f0f) \| (crc << 4 & 0xf0f0f0f0);
	325	crc = (crc >> 2 & 0x33333333) \| (crc << 2 & 0xcccccccc);
	326	crc = (crc >> 1 & 0x55555555) \| (crc << 1 & 0xaaaaaaaa);
	327	return crc;
	328	}
	329
	330	#endif
	331
c609719b WD	332
	333	int eth_init(bd_t *bis)
	334	{
	335	struct eth_device* old_current;
	336
6bc11388 SR	337	if (!eth_current) {
6bc11388 SR	338	puts ("No ethernet found.\n");
505be87a	339	return -1;
6bc11388	340	}
c609719b WD	341
	342	old_current = eth_current;
	343	do {
d4ca31c4	344	debug ("Trying %s\n", eth_current->name);
c609719b	345
422b1a01	346	if (eth_current->init(eth_current,bis) >= 0) {
c609719b WD	347	eth_current->state = ETH_STATE_ACTIVE;
c609719b WD	348
505be87a	349	return 0;
c609719b	350	}
d4ca31c4	351	debug ("FAIL\n");
c609719b WD	352
	353	eth_try_another(0);
	354	} while (old_current != eth_current);
	355
505be87a	356	return -1;
c609719b WD	357	}
	358
	359	void eth_halt(void)
	360	{
	361	if (!eth_current)
	362	return;
	363
	364	eth_current->halt(eth_current);
	365
	366	eth_current->state = ETH_STATE_PASSIVE;
	367	}
	368
	369	int eth_send(volatile void *packet, int length)
	370	{
	371	if (!eth_current)
	372	return -1;
	373
	374	return eth_current->send(eth_current, packet, length);
	375	}
	376
	377	int eth_rx(void)
	378	{
	379	if (!eth_current)
	380	return -1;
	381
	382	return eth_current->recv(eth_current);
	383	}
	384
f85b6071 RJ	385	#ifdef CONFIG_API
	386	static void eth_save_packet(volatile void *packet, int length)
	387	{
	388	volatile char *p = packet;
	389	int i;
	390
	391	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
	392	return;
	393
	394	if (PKTSIZE < length)
	395	return;
	396
	397	for (i = 0; i < length; i++)
	398	eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
	399
	400	eth_rcv_bufs[eth_rcv_last].length = length;
	401	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
	402	}
	403
	404	int eth_receive(volatile void *packet, int length)
	405	{
	406	volatile char *p = packet;
	407	void *pp = push_packet;
	408	int i;
	409
	410	if (eth_rcv_current == eth_rcv_last) {
	411	push_packet = eth_save_packet;
	412	eth_rx();
	413	push_packet = pp;
	414
	415	if (eth_rcv_current == eth_rcv_last)
	416	return -1;
	417	}
	418
	419	if (length < eth_rcv_bufs[eth_rcv_current].length)
	420	return -1;
	421
	422	length = eth_rcv_bufs[eth_rcv_current].length;
	423
	424	for (i = 0; i < length; i++)
	425	p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
	426
	427	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	428	return length;
	429	}
	430	#endif /* CONFIG_API */
	431
c609719b WD	432	void eth_try_another(int first_restart)
	433	{
	434	static struct eth_device *first_failed = NULL;
e1692577 MF	435	char *ethrotate;
	436
	437	/*
	438	* Do not rotate between network interfaces when
	439	* 'ethrotate' variable is set to 'no'.
	440	*/
	441	if (((ethrotate = getenv ("ethrotate")) != NULL) &&
	442	(strcmp(ethrotate, "no") == 0))
	443	return;
c609719b WD	444
	445	if (!eth_current)
	446	return;
	447
baac607c	448	if (first_restart) {
c609719b WD	449	first_failed = eth_current;
	450	}
	451
	452	eth_current = eth_current->next;
	453
a3d991bd WD	454	#ifdef CONFIG_NET_MULTI
	455	/* update current ethernet name */
	456	{
	457	char *act = getenv("ethact");
	458	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	459	setenv("ethact", eth_current->name);
	460	}
	461	#endif
	462
baac607c	463	if (first_failed == eth_current) {
c609719b WD	464	NetRestartWrap = 1;
	465	}
	466	}
	467
a3d991bd WD	468	#ifdef CONFIG_NET_MULTI
	469	void eth_set_current(void)
	470	{
da95427c HS	471	static char *act = NULL;
da95427c HS	472	static int env_changed_id = 0;
a3d991bd	473	struct eth_device* old_current;
2f70c49e	474	int env_id;
a3d991bd WD	475
	476	if (!eth_current) /* XXX no current */
	477	return;
	478
2f70c49e HS	479	env_id = get_env_id();
	480	if ((act == NULL) \|\| (env_changed_id != env_id)) {
	481	act = getenv("ethact");
	482	env_changed_id = env_id;
	483	}
a3d991bd WD	484	if (act != NULL) {
	485	old_current = eth_current;
	486	do {
	487	if (strcmp(eth_current->name, act) == 0)
	488	return;
	489	eth_current = eth_current->next;
	490	} while (old_current != eth_current);
	491	}
	492
	493	setenv("ethact", eth_current->name);
	494	}
	495	#endif
	496
5bb226e8 WD	497	char *eth_get_name (void)
	498	{
	499	return (eth_current ? eth_current->name : "unknown");
	500	}
643d1ab2	501	#elif defined(CONFIG_CMD_NET) && !defined(CONFIG_NET_MULTI)
63ff004c MB	502
63ff004c MB	503	extern int at91rm9200_miiphy_initialize(bd_t *bis);
63ff004c MB	504	extern int mcf52x2_miiphy_initialize(bd_t *bis);
63ff004c MB	505	extern int ns7520_miiphy_initialize(bd_t *bis);
c74b2108	506
63ff004c MB	507
	508	int eth_initialize(bd_t *bis)
	509	{
643d1ab2	510	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	511	miiphy_init();
	512	#endif
	513
63ff004c MB	514	#if defined(CONFIG_AT91RM9200)
	515	at91rm9200_miiphy_initialize(bis);
	516	#endif
63ff004c MB	517	#if defined(CONFIG_MCF52x2)
	518	mcf52x2_miiphy_initialize(bis);
	519	#endif
25dbe98a	520	#if defined(CONFIG_DRIVER_NS7520_ETHERNET)
63ff004c MB	521	ns7520_miiphy_initialize(bis);
	522	#endif
	523	return 0;
	524	}
c609719b	525	#endif