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git.ipfire.org Git - people/ms/u-boot.git/blob - net/eth.c
2 * (C) Copyright 2001-2010
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
29 void eth_parse_enetaddr(const char *addr
, uchar
*enetaddr
)
34 for (i
= 0; i
< 6; ++i
) {
35 enetaddr
[i
] = addr
? simple_strtoul(addr
, &end
, 16) : 0;
37 addr
= (*end
) ? end
+ 1 : end
;
41 int eth_getenv_enetaddr(char *name
, uchar
*enetaddr
)
43 eth_parse_enetaddr(getenv(name
), enetaddr
);
44 return is_valid_ether_addr(enetaddr
);
47 int eth_setenv_enetaddr(char *name
, const uchar
*enetaddr
)
51 sprintf(buf
, "%pM", enetaddr
);
53 return setenv(name
, buf
);
56 int eth_getenv_enetaddr_by_index(int index
, uchar
*enetaddr
)
59 sprintf(enetvar
, index
? "eth%daddr" : "ethaddr", index
);
60 return eth_getenv_enetaddr(enetvar
, enetaddr
);
63 #ifdef CONFIG_NET_MULTI
65 static int eth_mac_skip(int index
)
69 sprintf(enetvar
, index
? "eth%dmacskip" : "ethmacskip", index
);
70 return ((skip_state
= getenv(enetvar
)) != NULL
);
74 * CPU and board-specific Ethernet initializations. Aliased function
75 * signals caller to move on
77 static int __def_eth_init(bd_t
*bis
)
81 int cpu_eth_init(bd_t
*bis
) __attribute__((weak
, alias("__def_eth_init")));
82 int board_eth_init(bd_t
*bis
) __attribute__((weak
, alias("__def_eth_init")));
84 extern int mv6436x_eth_initialize(bd_t
*);
85 extern int mv6446x_eth_initialize(bd_t
*);
88 extern void (*push_packet
)(volatile void *, int);
93 } eth_rcv_bufs
[PKTBUFSRX
];
95 static unsigned int eth_rcv_current
= 0, eth_rcv_last
= 0;
98 static struct eth_device
*eth_devices
, *eth_current
;
100 struct eth_device
*eth_get_dev(void)
105 struct eth_device
*eth_get_dev_by_name(const char *devname
)
107 struct eth_device
*dev
, *target_dev
;
115 if (strcmp(devname
, dev
->name
) == 0) {
120 } while (dev
!= eth_devices
);
125 struct eth_device
*eth_get_dev_by_index(int index
)
127 struct eth_device
*dev
, *target_dev
;
142 } while (dev
!= eth_devices
);
147 int eth_get_dev_index (void)
149 struct eth_device
*dev
;
156 for (dev
= eth_devices
; dev
; dev
= dev
->next
) {
157 if (dev
== eth_current
)
169 static void eth_current_changed(void)
171 #ifdef CONFIG_NET_MULTI
173 char *act
= getenv("ethact");
174 /* update current ethernet name */
177 if (act
== NULL
|| strcmp(act
, eth_current
->name
) != 0)
178 setenv("ethact", eth_current
->name
);
181 * remove the variable completely if there is no active
184 else if (act
!= NULL
)
185 setenv("ethact", NULL
);
190 int eth_register(struct eth_device
*dev
)
192 struct eth_device
*d
;
194 eth_current
= eth_devices
= dev
;
195 eth_current_changed();
197 for (d
=eth_devices
; d
->next
!=eth_devices
; d
=d
->next
)
202 dev
->state
= ETH_STATE_INIT
;
203 dev
->next
= eth_devices
;
208 int eth_initialize(bd_t
*bis
)
210 unsigned char env_enetaddr
[6];
216 show_boot_progress (64);
217 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
221 * If board-specific initialization exists, call it.
222 * If not, call a CPU-specific one
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");
231 printf("Net Initialization Skipped\n");
233 #if defined(CONFIG_DB64360) || defined(CONFIG_CPCI750)
234 mv6436x_eth_initialize(bis
);
236 #if defined(CONFIG_DB64460) || defined(CONFIG_P3Mx)
237 mv6446x_eth_initialize(bis
);
240 puts ("No ethernet found.\n");
241 show_boot_progress (-64);
243 struct eth_device
*dev
= eth_devices
;
244 char *ethprime
= getenv ("ethprime");
246 show_boot_progress (65);
251 printf("%s", dev
->name
);
253 if (ethprime
&& strcmp (dev
->name
, ethprime
) == 0) {
258 if (strchr(dev
->name
, ' '))
259 puts("\nWarning: eth device name has a space!\n");
261 eth_getenv_enetaddr_by_index(eth_number
, env_enetaddr
);
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))
267 printf ("\nWarning: %s MAC addresses don't match:\n",
269 printf ("Address in SROM is %pM\n",
271 printf ("Address in environment is %pM\n",
275 memcpy(dev
->enetaddr
, env_enetaddr
, 6);
277 if (dev
->write_hwaddr
&&
278 !eth_mac_skip(eth_number
) &&
279 is_valid_ether_addr(dev
->enetaddr
)) {
280 dev
->write_hwaddr(dev
);
285 } while(dev
!= eth_devices
);
287 eth_current_changed();
294 #ifdef CONFIG_MCAST_TFTP
296 * mcast_addr: multicast ipaddr from which multicast Mac is made
297 * join: 1=join, 0=leave.
299 int eth_mcast_join( IPaddr_t mcast_ip
, u8 join
)
302 if (!eth_current
|| !eth_current
->mcast
)
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;
310 return eth_current
->mcast(eth_current
, mcast_mac
, join
);
313 /* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
314 * and this is the ethernet-crc method needed for TSEC -- and perhaps
315 * some other adapter -- hash tables
317 #define CRCPOLY_LE 0xedb88320
318 u32
ether_crc (size_t len
, unsigned char const *p
)
325 for (i
= 0; i
< 8; i
++)
326 crc
= (crc
>> 1) ^ ((crc
& 1) ? CRCPOLY_LE
: 0);
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);
340 int eth_init(bd_t
*bis
)
343 struct eth_device
*old_current
, *dev
;
346 puts ("No ethernet found.\n");
350 /* Sync environment with network devices */
354 uchar env_enetaddr
[6];
356 if (eth_getenv_enetaddr_by_index(eth_number
, env_enetaddr
))
357 memcpy(dev
->enetaddr
, env_enetaddr
, 6);
361 } while (dev
!= eth_devices
);
363 old_current
= eth_current
;
365 debug("Trying %s\n", eth_current
->name
);
367 if (eth_current
->init(eth_current
,bis
) >= 0) {
368 eth_current
->state
= ETH_STATE_ACTIVE
;
375 } while (old_current
!= eth_current
);
385 eth_current
->halt(eth_current
);
387 eth_current
->state
= ETH_STATE_PASSIVE
;
390 int eth_send(volatile void *packet
, int length
)
395 return eth_current
->send(eth_current
, packet
, length
);
403 return eth_current
->recv(eth_current
);
407 static void eth_save_packet(volatile void *packet
, int length
)
409 volatile char *p
= packet
;
412 if ((eth_rcv_last
+1) % PKTBUFSRX
== eth_rcv_current
)
415 if (PKTSIZE
< length
)
418 for (i
= 0; i
< length
; i
++)
419 eth_rcv_bufs
[eth_rcv_last
].data
[i
] = p
[i
];
421 eth_rcv_bufs
[eth_rcv_last
].length
= length
;
422 eth_rcv_last
= (eth_rcv_last
+ 1) % PKTBUFSRX
;
425 int eth_receive(volatile void *packet
, int length
)
427 volatile char *p
= packet
;
428 void *pp
= push_packet
;
431 if (eth_rcv_current
== eth_rcv_last
) {
432 push_packet
= eth_save_packet
;
436 if (eth_rcv_current
== eth_rcv_last
)
440 if (length
< eth_rcv_bufs
[eth_rcv_current
].length
)
443 length
= eth_rcv_bufs
[eth_rcv_current
].length
;
445 for (i
= 0; i
< length
; i
++)
446 p
[i
] = eth_rcv_bufs
[eth_rcv_current
].data
[i
];
448 eth_rcv_current
= (eth_rcv_current
+ 1) % PKTBUFSRX
;
451 #endif /* CONFIG_API */
453 void eth_try_another(int first_restart
)
455 static struct eth_device
*first_failed
= NULL
;
459 * Do not rotate between network interfaces when
460 * 'ethrotate' variable is set to 'no'.
462 if (((ethrotate
= getenv ("ethrotate")) != NULL
) &&
463 (strcmp(ethrotate
, "no") == 0))
470 first_failed
= eth_current
;
473 eth_current
= eth_current
->next
;
475 eth_current_changed();
477 if (first_failed
== eth_current
) {
482 void eth_set_current(void)
484 static char *act
= NULL
;
485 static int env_changed_id
= 0;
486 struct eth_device
* old_current
;
489 if (!eth_current
) /* XXX no current */
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
;
498 old_current
= eth_current
;
500 if (strcmp(eth_current
->name
, act
) == 0)
502 eth_current
= eth_current
->next
;
503 } while (old_current
!= eth_current
);
506 eth_current_changed();
509 char *eth_get_name (void)
511 return (eth_current
? eth_current
->name
: "unknown");
514 #else /* !CONFIG_NET_MULTI */
516 #warning Ethernet driver is deprecated. Please update to use CONFIG_NET_MULTI
518 extern int at91rm9200_miiphy_initialize(bd_t
*bis
);
519 extern int mcf52x2_miiphy_initialize(bd_t
*bis
);
520 extern int ns7520_miiphy_initialize(bd_t
*bis
);
523 int eth_initialize(bd_t
*bis
)
525 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
529 #if defined(CONFIG_AT91RM9200)
530 at91rm9200_miiphy_initialize(bis
);
532 #if defined(CONFIG_MCF52x2)
533 mcf52x2_miiphy_initialize(bis
);
535 #if defined(CONFIG_DRIVER_NS7520_ETHERNET)
536 ns7520_miiphy_initialize(bis
);