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

/*
 * (C) Copyright 2001-2010
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * 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>
#include <phy.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(const char *base_name, int index,
				 uchar *enetaddr)
{
	char enetvar[32];
	sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, 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_write_hwaddr(struct eth_device *dev, const char *base_name,
		   int eth_number)
{
	unsigned char env_enetaddr[6];
	int ret = 0;

	if (!eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr))
		return -1;

	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)) {
		ret = dev->write_hwaddr(dev);
	}

	return ret;
}

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)
{
	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

#ifdef CONFIG_PHYLIB
	phy_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");

			if (eth_write_hwaddr(dev, NULL, eth_number))
				puts("Warning: failed to set MAC address\n");

			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", 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 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_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, [email protected].
	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>
5f184715	28	#include <phy.h>
c609719b	29
3f6e6993 MF	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	}
86848a74	56
7616e785 SG	57	int eth_getenv_enetaddr_by_index(const char *base_name, int index,
7616e785 SG	58	uchar *enetaddr)
86848a74 MF	59	{
86848a74 MF	60	char enetvar[32];
7616e785	61	sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
86848a74 MF	62	return eth_getenv_enetaddr(enetvar, enetaddr);
86848a74 MF	63	}
3f6e6993	64
9c00b2f0 WD	65	#ifdef CONFIG_NET_MULTI
9c00b2f0 WD	66
ecee9324 BW	67	static int eth_mac_skip(int index)
	68	{
	69	char enetvar[15];
	70	char *skip_state;
	71	sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
	72	return ((skip_state = getenv(enetvar)) != NULL);
	73	}
	74
dd35479a BW	75	/*
	76	* CPU and board-specific Ethernet initializations. Aliased function
	77	* signals caller to move on
	78	*/
	79	static int __def_eth_init(bd_t *bis)
	80	{
	81	return -1;
	82	}
f9a109b3 PT	83	int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
f9a109b3 PT	84	int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
dd35479a	85
3a473b2a WD	86	extern int mv6436x_eth_initialize(bd_t *);
3a473b2a WD	87	extern int mv6446x_eth_initialize(bd_t *);
c609719b	88
f85b6071 RJ	89	#ifdef CONFIG_API
	90	extern void (push_packet)(volatile void , int);
	91
	92	static struct {
	93	uchar data[PKTSIZE];
	94	int length;
	95	} eth_rcv_bufs[PKTBUFSRX];
	96
	97	static unsigned int eth_rcv_current = 0, eth_rcv_last = 0;
	98	#endif
	99
c609719b WD	100	static struct eth_device eth_devices, eth_current;
	101
	102	struct eth_device *eth_get_dev(void)
	103	{
	104	return eth_current;
	105	}
	106
d7fb9bcf	107	struct eth_device eth_get_dev_by_name(const char devname)
63ff004c MB	108	{
	109	struct eth_device dev, target_dev;
	110
	111	if (!eth_devices)
	112	return NULL;
	113
	114	dev = eth_devices;
	115	target_dev = NULL;
	116	do {
	117	if (strcmp(devname, dev->name) == 0) {
	118	target_dev = dev;
	119	break;
	120	}
	121	dev = dev->next;
	122	} while (dev != eth_devices);
	123
	124	return target_dev;
	125	}
	126
9e56986a AF	127	struct eth_device *eth_get_dev_by_index(int index)
	128	{
	129	struct eth_device dev, target_dev;
	130	int idx = 0;
	131
	132	if (!eth_devices)
	133	return NULL;
	134
	135	dev = eth_devices;
	136	target_dev = NULL;
	137	do {
	138	if (idx == index) {
	139	target_dev = dev;
	140	break;
	141	}
	142	dev = dev->next;
	143	idx++;
	144	} while (dev != eth_devices);
	145
	146	return target_dev;
	147	}
	148
c609719b WD	149	int eth_get_dev_index (void)
	150	{
	151	struct eth_device *dev;
	152	int num = 0;
	153
	154	if (!eth_devices) {
	155	return (-1);
	156	}
	157
	158	for (dev = eth_devices; dev; dev = dev->next) {
	159	if (dev == eth_current)
	160	break;
	161	++num;
	162	}
	163
	164	if (dev) {
	165	return (num);
	166	}
	167
	168	return (0);
	169	}
	170
89d48367	171	static void eth_current_changed(void)
c609719b	172	{
a3d991bd	173	#ifdef CONFIG_NET_MULTI
89d48367 SG	174	{
89d48367 SG	175	char *act = getenv("ethact");
a3d991bd	176	/* update current ethernet name */
89d48367	177	if (eth_current)
a3d991bd	178	{
a3d991bd WD	179	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	180	setenv("ethact", eth_current->name);
	181	}
89d48367 SG	182	/*
	183	* remove the variable completely if there is no active
	184	* interface
	185	*/
	186	else if (act != NULL)
	187	setenv("ethact", NULL);
	188	}
a3d991bd	189	#endif
89d48367 SG	190	}
89d48367 SG	191
7616e785 SG	192	int eth_write_hwaddr(struct eth_device dev, const char base_name,
	193	int eth_number)
	194	{
	195	unsigned char env_enetaddr[6];
	196	int ret = 0;
	197
	198	if (!eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr))
	199	return -1;
	200
	201	if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
	202	if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
	203	memcmp(dev->enetaddr, env_enetaddr, 6)) {
	204	printf("\nWarning: %s MAC addresses don't match:\n",
	205	dev->name);
	206	printf("Address in SROM is %pM\n",
	207	dev->enetaddr);
	208	printf("Address in environment is %pM\n",
	209	env_enetaddr);
	210	}
	211
	212	memcpy(dev->enetaddr, env_enetaddr, 6);
	213	}
	214
	215	if (dev->write_hwaddr &&
	216	!eth_mac_skip(eth_number) &&
	217	is_valid_ether_addr(dev->enetaddr)) {
	218	ret = dev->write_hwaddr(dev);
	219	}
	220
	221	return ret;
	222	}
	223
89d48367 SG	224	int eth_register(struct eth_device *dev)
	225	{
	226	struct eth_device *d;
	227	if (!eth_devices) {
	228	eth_current = eth_devices = dev;
	229	eth_current_changed();
c609719b	230	} else {
aba4b69d DZ	231	for (d=eth_devices; d->next!=eth_devices; d=d->next)
aba4b69d DZ	232	;
c609719b WD	233	d->next = dev;
	234	}
	235
	236	dev->state = ETH_STATE_INIT;
	237	dev->next = eth_devices;
	238
	239	return 0;
	240	}
	241
	242	int eth_initialize(bd_t *bis)
	243	{
3f6e6993	244	int eth_number = 0;
c609719b WD	245
	246	eth_devices = NULL;
	247	eth_current = NULL;
	248
fad63407	249	show_boot_progress (64);
643d1ab2	250	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	251	miiphy_init();
d9785c14 MB	252	#endif
5f184715 AF	253
	254	#ifdef CONFIG_PHYLIB
	255	phy_init();
	256	#endif
	257
8ad25bf8 BW	258	/*
	259	* If board-specific initialization exists, call it.
	260	* If not, call a CPU-specific one
	261	*/
	262	if (board_eth_init != __def_eth_init) {
	263	if (board_eth_init(bis) < 0)
	264	printf("Board Net Initialization Failed\n");
	265	} else if (cpu_eth_init != __def_eth_init) {
	266	if (cpu_eth_init(bis) < 0)
	267	printf("CPU Net Initialization Failed\n");
	268	} else
	269	printf("Net Initialization Skipped\n");
d9785c14	270
1eac2a71	271	#if defined(CONFIG_DB64360) \|\| defined(CONFIG_CPCI750)
3a473b2a WD	272	mv6436x_eth_initialize(bis);
3a473b2a WD	273	#endif
1eac2a71	274	#if defined(CONFIG_DB64460) \|\| defined(CONFIG_P3Mx)
3a473b2a	275	mv6446x_eth_initialize(bis);
c68a05fe	276	#endif
c609719b WD	277	if (!eth_devices) {
c609719b WD	278	puts ("No ethernet found.\n");
fad63407	279	show_boot_progress (-64);
c609719b WD	280	} else {
	281	struct eth_device *dev = eth_devices;
	282	char *ethprime = getenv ("ethprime");
	283
fad63407	284	show_boot_progress (65);
c609719b WD	285	do {
	286	if (eth_number)
	287	puts (", ");
	288
	289	printf("%s", dev->name);
	290
	291	if (ethprime && strcmp (dev->name, ethprime) == 0) {
	292	eth_current = dev;
	293	puts (" [PRIME]");
	294	}
	295
1384f3bb MF	296	if (strchr(dev->name, ' '))
	297	puts("\nWarning: eth device name has a space!\n");
	298
7616e785 SG	299	if (eth_write_hwaddr(dev, NULL, eth_number))
7616e785 SG	300	puts("Warning: failed to set MAC address\n");
c609719b WD	301
	302	eth_number++;
	303	dev = dev->next;
	304	} while(dev != eth_devices);
	305
89d48367	306	eth_current_changed();
c609719b WD	307	putc ('\n');
	308	}
	309
	310	return eth_number;
	311	}
	312
53a5c424 DU	313	#ifdef CONFIG_MCAST_TFTP
	314	/* Multicast.
	315	* mcast_addr: multicast ipaddr from which multicast Mac is made
85eb5caf	316	* join: 1=join, 0=leave.
53a5c424 DU	317	*/
	318	int eth_mcast_join( IPaddr_t mcast_ip, u8 join)
	319	{
	320	u8 mcast_mac[6];
85eb5caf	321	if (!eth_current \|\| !eth_current->mcast)
53a5c424 DU	322	return -1;
	323	mcast_mac[5] = htonl(mcast_ip) & 0xff;
	324	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
	325	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
	326	mcast_mac[2] = 0x5e;
	327	mcast_mac[1] = 0x0;
	328	mcast_mac[0] = 0x1;
	329	return eth_current->mcast(eth_current, mcast_mac, join);
	330	}
	331
85eb5caf WD	332	/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
85eb5caf WD	333	* and this is the ethernet-crc method needed for TSEC -- and perhaps
53a5c424 DU	334	* some other adapter -- hash tables
	335	*/
	336	#define CRCPOLY_LE 0xedb88320
	337	u32 ether_crc (size_t len, unsigned char const *p)
	338	{
	339	int i;
	340	u32 crc;
	341	crc = ~0;
	342	while (len--) {
	343	crc ^= *p++;
	344	for (i = 0; i < 8; i++)
	345	crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
	346	}
	347	/* an reverse the bits, cuz of way they arrive -- last-first */
	348	crc = (crc >> 16) \| (crc << 16);
	349	crc = (crc >> 8 & 0x00ff00ff) \| (crc << 8 & 0xff00ff00);
	350	crc = (crc >> 4 & 0x0f0f0f0f) \| (crc << 4 & 0xf0f0f0f0);
	351	crc = (crc >> 2 & 0x33333333) \| (crc << 2 & 0xcccccccc);
	352	crc = (crc >> 1 & 0x55555555) \| (crc << 1 & 0xaaaaaaaa);
	353	return crc;
	354	}
	355
	356	#endif
	357
c609719b WD	358
	359	int eth_init(bd_t *bis)
	360	{
86848a74 MF	361	int eth_number;
86848a74 MF	362	struct eth_device old_current, dev;
c609719b	363
6bc11388 SR	364	if (!eth_current) {
6bc11388 SR	365	puts ("No ethernet found.\n");
505be87a	366	return -1;
6bc11388	367	}
c609719b	368
86848a74 MF	369	/* Sync environment with network devices */
	370	eth_number = 0;
	371	dev = eth_devices;
	372	do {
	373	uchar env_enetaddr[6];
	374
7616e785 SG	375	if (eth_getenv_enetaddr_by_index("eth", eth_number,
7616e785 SG	376	env_enetaddr))
86848a74 MF	377	memcpy(dev->enetaddr, env_enetaddr, 6);
	378
	379	++eth_number;
	380	dev = dev->next;
	381	} while (dev != eth_devices);
	382
c609719b WD	383	old_current = eth_current;
c609719b WD	384	do {
0ebf04c6	385	debug("Trying %s\n", eth_current->name);
c609719b	386
422b1a01	387	if (eth_current->init(eth_current,bis) >= 0) {
c609719b WD	388	eth_current->state = ETH_STATE_ACTIVE;
c609719b WD	389
505be87a	390	return 0;
c609719b	391	}
0ebf04c6	392	debug("FAIL\n");
c609719b WD	393
	394	eth_try_another(0);
	395	} while (old_current != eth_current);
	396
505be87a	397	return -1;
c609719b WD	398	}
	399
	400	void eth_halt(void)
	401	{
	402	if (!eth_current)
	403	return;
	404
	405	eth_current->halt(eth_current);
	406
	407	eth_current->state = ETH_STATE_PASSIVE;
	408	}
	409
	410	int eth_send(volatile void *packet, int length)
	411	{
	412	if (!eth_current)
	413	return -1;
	414
	415	return eth_current->send(eth_current, packet, length);
	416	}
	417
	418	int eth_rx(void)
	419	{
	420	if (!eth_current)
	421	return -1;
	422
	423	return eth_current->recv(eth_current);
	424	}
	425
f85b6071 RJ	426	#ifdef CONFIG_API
	427	static void eth_save_packet(volatile void *packet, int length)
	428	{
	429	volatile char *p = packet;
	430	int i;
	431
	432	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
	433	return;
	434
	435	if (PKTSIZE < length)
	436	return;
	437
	438	for (i = 0; i < length; i++)
	439	eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
	440
	441	eth_rcv_bufs[eth_rcv_last].length = length;
	442	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
	443	}
	444
	445	int eth_receive(volatile void *packet, int length)
	446	{
	447	volatile char *p = packet;
	448	void *pp = push_packet;
	449	int i;
	450
	451	if (eth_rcv_current == eth_rcv_last) {
	452	push_packet = eth_save_packet;
	453	eth_rx();
	454	push_packet = pp;
	455
	456	if (eth_rcv_current == eth_rcv_last)
	457	return -1;
	458	}
	459
	460	if (length < eth_rcv_bufs[eth_rcv_current].length)
	461	return -1;
	462
	463	length = eth_rcv_bufs[eth_rcv_current].length;
	464
	465	for (i = 0; i < length; i++)
	466	p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
	467
	468	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	469	return length;
	470	}
	471	#endif /* CONFIG_API */
	472
c609719b WD	473	void eth_try_another(int first_restart)
	474	{
	475	static struct eth_device *first_failed = NULL;
c650e1be	476	char *ethrotate;
e1692577 MF	477
	478	/*
	479	* Do not rotate between network interfaces when
	480	* 'ethrotate' variable is set to 'no'.
	481	*/
	482	if (((ethrotate = getenv ("ethrotate")) != NULL) &&
	483	(strcmp(ethrotate, "no") == 0))
	484	return;
c609719b WD	485
	486	if (!eth_current)
	487	return;
	488
baac607c	489	if (first_restart) {
c609719b WD	490	first_failed = eth_current;
	491	}
	492
	493	eth_current = eth_current->next;
	494
89d48367	495	eth_current_changed();
a3d991bd	496
baac607c	497	if (first_failed == eth_current) {
c609719b WD	498	NetRestartWrap = 1;
	499	}
	500	}
	501
a3d991bd WD	502	void eth_set_current(void)
a3d991bd WD	503	{
da95427c HS	504	static char *act = NULL;
da95427c HS	505	static int env_changed_id = 0;
a3d991bd	506	struct eth_device* old_current;
2f70c49e	507	int env_id;
a3d991bd WD	508
	509	if (!eth_current) /* XXX no current */
	510	return;
	511
2f70c49e HS	512	env_id = get_env_id();
	513	if ((act == NULL) \|\| (env_changed_id != env_id)) {
	514	act = getenv("ethact");
	515	env_changed_id = env_id;
	516	}
a3d991bd WD	517	if (act != NULL) {
	518	old_current = eth_current;
	519	do {
	520	if (strcmp(eth_current->name, act) == 0)
	521	return;
	522	eth_current = eth_current->next;
	523	} while (old_current != eth_current);
	524	}
	525
89d48367	526	eth_current_changed();
a3d991bd	527	}
a3d991bd	528
5bb226e8 WD	529	char *eth_get_name (void)
	530	{
	531	return (eth_current ? eth_current->name : "unknown");
	532	}
6ac59c55 MF	533
6ac59c55 MF	534	#else /* !CONFIG_NET_MULTI */
63ff004c	535
3bd0a877 BW	536	#warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
3bd0a877 BW	537
63ff004c MB	538	extern int mcf52x2_miiphy_initialize(bd_t *bis);
63ff004c MB	539	extern int ns7520_miiphy_initialize(bd_t *bis);
c74b2108	540
63ff004c MB	541
	542	int eth_initialize(bd_t *bis)
	543	{
643d1ab2	544	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII)
d9785c14 MB	545	miiphy_init();
	546	#endif
	547
63ff004c MB	548	#if defined(CONFIG_MCF52x2)
	549	mcf52x2_miiphy_initialize(bis);
	550	#endif
25dbe98a	551	#if defined(CONFIG_DRIVER_NS7520_ETHERNET)
63ff004c MB	552	ns7520_miiphy_initialize(bis);
	553	#endif
	554	return 0;
	555	}
c609719b	556	#endif