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135f5534 GJ |
1 | /* |
2 | * (C) Copyright 2008 | |
3 | * Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de. | |
4 | * | |
8d1f2682 | 5 | * Based in part on arch/ppc/cpu/mpc8260/ether_scc.c. |
135f5534 GJ |
6 | * |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #include <common.h> | |
27 | #include <malloc.h> | |
28 | #include <net.h> | |
29 | ||
30 | #ifdef CONFIG_KEYMILE_HDLC_ENET | |
31 | #ifdef TEST_IT | |
32 | #include <command.h> | |
33 | #endif | |
34 | ||
35 | #include "keymile_hdlc_enet.h" | |
36 | ||
37 | extern char keymile_slot; /* our slot number in the backplane */ | |
38 | ||
39 | /* Allow up to about 50 ms for sending */ | |
40 | #define TOUT_LOOP 50000 | |
41 | ||
42 | /* | |
43 | * Since, except during initialization, ethact is always HDLC ETHERNET | |
44 | * while we're in the driver, just use serial_printf() everywhere for | |
45 | * output. This avoids possible conflicts when netconsole is being | |
46 | * used. | |
47 | */ | |
48 | #define dprintf(fmt, args...) serial_printf(fmt, ##args) | |
49 | ||
50 | /* Cannot use the storage from net.c because we allocate larger buffers */ | |
51 | static volatile uchar MyPktBuf[HDLC_PKTBUFSRX * PKT_MAXBLR_SIZE + PKTALIGN]; | |
52 | static volatile uchar *MyRxPackets[HDLC_PKTBUFSRX]; /* Receive packet */ | |
53 | ||
54 | static unsigned int keymile_rxIdx; /* index of the current RX buffer */ | |
55 | ||
56 | static IPaddr_t cachedNumbers[CACHEDNUMBERS]; /* 4 bytes per entry */ | |
57 | void initCachedNumbers(int); | |
58 | ||
59 | /* | |
60 | * SCC Ethernet Tx and Rx buffer descriptors allocated at the | |
61 | * immr->udata_bd address on Dual-Port RAM | |
62 | * Provide for Double Buffering | |
63 | */ | |
64 | typedef volatile struct CommonBufferDescriptor { | |
65 | cbd_t txbd; /* Tx BD */ | |
66 | cbd_t rxbd[HDLC_PKTBUFSRX]; /* Rx BD */ | |
67 | } RTXBD; | |
68 | ||
69 | /* | |
70 | * This must be extern because it is allocated in DPRAM using CPM-sepcific | |
71 | * code. | |
72 | */ | |
73 | static RTXBD *rtx; | |
74 | ||
75 | static int keymile_hdlc_enet_send(struct eth_device *, volatile void *, int); | |
76 | static int keymile_hdlc_enet_recv(struct eth_device *); | |
77 | void keymile_hdlc_enet_init_bds(RTXBD *); | |
78 | extern int keymile_hdlc_enet_init(struct eth_device *, bd_t *); | |
79 | extern void keymile_hdlc_enet_halt(struct eth_device *); | |
80 | ||
81 | /* flags in the buffer descriptor not defined anywhere else */ | |
82 | #define BD_SC_CT BD_SC_CD | |
83 | #define BD_SC_CR 0x04 | |
84 | #define BD_SC_DE 0x80 | |
85 | #ifndef BD_SC_TC | |
86 | #define BD_SC_TC ((ushort)0x0400) /* Transmit CRC */ | |
87 | #endif | |
88 | #define BD_SC_FIRST BD_SC_TC | |
89 | #define BD_SC_STATS (BD_SC_BR | BD_SC_FR | BD_SC_PR | BD_SC_CR | BD_SC_CD \ | |
90 | | BD_SC_OV | BD_SC_DE) | |
91 | ||
92 | #if defined(TEST_RX) || defined(TEST_TX) || defined(TEST_IT) | |
93 | static void hexdump(unsigned char *buf, int len) | |
94 | { | |
95 | int i; | |
96 | const int bytesPerLine = 32; | |
97 | ||
98 | if (len > 4 * bytesPerLine) | |
99 | len = 4 * bytesPerLine; | |
100 | dprintf("\t address: %08x\n", (unsigned int)buf); | |
101 | for (i = 0; i < len; i++) { | |
102 | if (i % bytesPerLine == 0) | |
103 | dprintf("%04x: ", (unsigned short)i); | |
104 | dprintf("%02x ", buf[i]); | |
105 | if ((i + 1) % bytesPerLine == 0) { | |
106 | dprintf("\n"); | |
107 | continue; | |
108 | } | |
109 | if ((i + 1) % 8 == 0) | |
110 | printf(" "); | |
111 | } | |
112 | if (len % bytesPerLine) | |
113 | dprintf("\n"); | |
114 | } | |
115 | #endif | |
116 | ||
117 | int keymile_hdlc_enet_initialize(bd_t *bis) | |
118 | { | |
119 | struct eth_device *dev; | |
120 | ||
121 | dev = (struct eth_device *) malloc(sizeof *dev); | |
122 | memset(dev, 0, sizeof *dev); | |
123 | #ifdef TEST_IT | |
124 | seth = dev; | |
125 | #endif | |
126 | ||
127 | sprintf(dev->name, "HDLC ETHERNET"); | |
128 | dev->init = keymile_hdlc_enet_init; | |
129 | dev->halt = keymile_hdlc_enet_halt; | |
130 | dev->send = keymile_hdlc_enet_send; | |
131 | dev->recv = keymile_hdlc_enet_recv; | |
132 | ||
133 | eth_register(dev); | |
134 | ||
135 | return 1; | |
136 | } | |
137 | ||
138 | /* | |
139 | * This is called from the board-specific driver after rtx is allocated. | |
140 | */ | |
141 | void keymile_hdlc_enet_init_bds(RTXBD *board_rtx) | |
142 | { | |
143 | volatile cbd_t *bdp; | |
144 | int i; | |
145 | ||
146 | rtx = board_rtx; | |
147 | keymile_rxIdx = 0; | |
148 | /* | |
149 | * Initialize the buffer descriptors. | |
150 | */ | |
151 | bdp = &rtx->txbd; | |
152 | bdp->cbd_sc = 0; | |
153 | bdp->cbd_bufaddr = 0; | |
154 | bdp->cbd_sc = BD_SC_WRAP; | |
155 | ||
156 | /* | |
157 | * Setup RX packet buffers, aligned correctly. | |
158 | * Borrowed from net/net.c. | |
159 | */ | |
160 | MyRxPackets[0] = &MyPktBuf[0] + (PKTALIGN - 1); | |
161 | MyRxPackets[0] -= (ulong)MyRxPackets[0] % PKTALIGN; | |
162 | for (i = 1; i < HDLC_PKTBUFSRX; i++) | |
163 | MyRxPackets[i] = MyRxPackets[0] + i * PKT_MAXBLR_SIZE; | |
164 | ||
165 | bdp = &rtx->rxbd[0]; | |
166 | for (i = 0; i < HDLC_PKTBUFSRX; i++) { | |
167 | bdp->cbd_sc = BD_SC_EMPTY; | |
168 | /* Leave space at the start for INET header. */ | |
169 | bdp->cbd_bufaddr = (unsigned int)(MyRxPackets[i] + | |
170 | INET_HDR_ALIGN); | |
171 | bdp++; | |
172 | } | |
173 | bdp--; | |
174 | bdp->cbd_sc |= BD_SC_WRAP; | |
175 | } | |
176 | ||
177 | /* | |
178 | * This returns the current port number for NETCONSOLE. If nc_port | |
179 | * in netconsole.c weren't declared static we wouldn't need this. | |
180 | */ | |
181 | static short get_netcons_port(void) | |
182 | { | |
183 | char *p; | |
184 | short nc_port; | |
185 | ||
186 | nc_port = 6666; /* default */ | |
187 | ||
188 | p = getenv("ncip"); | |
189 | if (p != NULL) { | |
190 | p = strchr(p, ':'); | |
191 | if (p != NULL) | |
192 | nc_port = simple_strtoul(p + 1, NULL, 10); | |
193 | } | |
194 | ||
195 | return htons(nc_port); | |
196 | } | |
197 | ||
198 | /* | |
199 | * Read the port numbers from the variables | |
200 | */ | |
201 | void initCachedNumbers(int verbose) | |
202 | { | |
203 | char *str; | |
204 | ushort port; | |
205 | ||
206 | /* already in network order */ | |
207 | cachedNumbers[IP_ADDR] = getenv_IPaddr("ipaddr"); | |
208 | /* already in network order */ | |
209 | cachedNumbers[IP_SERVER] = getenv_IPaddr("serverip"); | |
210 | str = getenv("tftpsrcp"); | |
211 | if (str != NULL) { | |
212 | /* avoid doing htons() again and again */ | |
213 | port = htons((ushort)simple_strtol(str, NULL, 10)); | |
214 | cachedNumbers[TFTP_SRC_PORT] = port; | |
215 | } else | |
216 | /* this can never be a valid port number */ | |
217 | cachedNumbers[TFTP_SRC_PORT] = (ulong)-1; | |
218 | str = getenv("tftpdstp"); | |
219 | if (str != NULL) { | |
220 | /* avoid doing htons() again and again */ | |
221 | port = htons((ushort)simple_strtol(str, NULL, 10)); | |
222 | cachedNumbers[TFTP_DST_PORT] = port; | |
223 | } else | |
224 | /* this is the default value */ | |
225 | cachedNumbers[TFTP_DST_PORT] = htons(WELL_KNOWN_PORT); | |
226 | /* already in network order */ | |
227 | cachedNumbers[NETCONS_PORT] = get_netcons_port(); | |
228 | if (verbose) { | |
229 | dprintf("\nIP Number Initialization:\n"); | |
230 | dprintf(" ip address %08lx\n", cachedNumbers[IP_ADDR]); | |
231 | dprintf(" server ip address %08lx\n", | |
232 | cachedNumbers[IP_SERVER]); | |
233 | dprintf(" tftp client port %ld\n", | |
234 | cachedNumbers[TFTP_SRC_PORT]); | |
235 | dprintf(" tftp server port %ld\n", | |
236 | cachedNumbers[TFTP_DST_PORT]); | |
237 | dprintf(" netcons port %ld\n", | |
238 | cachedNumbers[NETCONS_PORT]); | |
239 | dprintf(" slot number (hex) %02x\n", keymile_slot); | |
240 | } | |
241 | } | |
242 | ||
243 | static void keymile_hdlc_enet_doarp(volatile void *packet, int len) | |
244 | { | |
245 | ARP_t *arp; | |
246 | IPaddr_t src_ip; /* U-Boot's IP */ | |
247 | IPaddr_t dest_ip; /* the mgcoge's IP */ | |
248 | unsigned char *packet_copy = malloc(len); | |
249 | ||
250 | /* | |
251 | * Handling an ARP request means that a new transfer has started. | |
252 | * Update our cached parameters now. | |
253 | */ | |
254 | initCachedNumbers(0); /* may reinit port numbers */ | |
255 | ||
256 | /* special handling required for ARP */ | |
257 | arp = (ARP_t *)(packet + ETHER_HDR_SIZE); | |
258 | /* | |
259 | * XXXX | |
260 | * This is pretty dirty! NetReceive only uses | |
261 | * a few fields when handling an ARP reply, so | |
262 | * we only modify those here. This could | |
263 | * result in catastrophic failure at a later | |
264 | * time if the handler is modified! | |
265 | */ | |
266 | arp->ar_op = htons(ARPOP_REPLY); | |
267 | /* save his/our IP */ | |
268 | src_ip = NetReadIP(&arp->ar_data[6]); | |
269 | dest_ip = NetReadIP(&arp->ar_data[16]); | |
270 | /* copy target IP to source IP */ | |
271 | NetCopyIP(&arp->ar_data[6], &dest_ip); | |
272 | /* copy our IP to the right place */ | |
273 | NetCopyIP(&arp->ar_data[16], &src_ip); | |
274 | /* always use 0x7f as the MAC for the coge */ | |
275 | arp->ar_data[0] = HDLC_UACUA; | |
276 | /* | |
277 | * copy the packet | |
278 | * if NetReceive wants to write to stdout, it may overwrite packet | |
279 | * especially if stdout is set to nc! | |
280 | * | |
281 | * However, if the malloc() above fails then we can still try the | |
282 | * original packet, rather than causing the transfer to fail. | |
283 | */ | |
284 | if (packet_copy != NULL) { | |
285 | memcpy(packet_copy, (char *)packet, len); | |
286 | NetReceive(packet_copy, len); | |
287 | free(packet_copy); | |
288 | } else | |
289 | NetReceive(packet, len); | |
290 | } | |
291 | ||
292 | /* | |
293 | * NOTE all callers ignore the returned value! | |
294 | * At the moment this only handles ARP Requests, TFTP and NETCONSOLE. | |
295 | */ | |
296 | static int keymile_hdlc_enet_send(struct eth_device *dev, volatile void *packet, | |
297 | int len) | |
298 | { | |
299 | int j; | |
300 | uint data_addr; | |
301 | int data_len; | |
302 | struct icn_hdr header; | |
303 | struct icn_frame *frame; | |
304 | Ethernet_t *et; | |
305 | ARP_t *arp; | |
306 | IP_t *ip; | |
307 | ||
308 | if (len > (MAX_FRAME_LENGTH - sizeof(header))) | |
309 | return -1; | |
310 | ||
311 | frame = NULL; | |
312 | et = NULL; | |
313 | arp = NULL; | |
314 | ip = NULL; | |
315 | ||
316 | j = 0; | |
317 | while ((rtx->txbd.cbd_sc & BD_SC_READY) && (j < TOUT_LOOP)) { | |
318 | /* will also trigger Wd if needed, but maybe too often */ | |
319 | udelay(1); | |
320 | j++; | |
321 | } | |
322 | if (j >= TOUT_LOOP) { | |
323 | dprintf("TX not ready sc %x\n", rtx->txbd.cbd_sc); | |
324 | return -1; | |
325 | } | |
326 | ||
327 | /* | |
328 | * First check for an ARP Request since this requires special handling. | |
329 | */ | |
330 | if (len >= (ARP_HDR_SIZE + ETHER_HDR_SIZE)) { | |
331 | et = (Ethernet_t *)packet; | |
332 | arp = (ARP_t *)(((char *)et) + ETHER_HDR_SIZE); | |
333 | /* ARP and REQUEST? */ | |
334 | if (et->et_protlen == PROT_ARP && | |
335 | arp->ar_op == htons(ARPOP_REQUEST)) { | |
336 | /* just short-circuit the request on the U-Boot side */ | |
337 | keymile_hdlc_enet_doarp(packet, len); | |
338 | return 0; | |
339 | } | |
340 | } | |
341 | ||
342 | /* | |
343 | * GJ - I suppose the assumption here that len will always be | |
344 | * > INET_HDR_SIZE is alright as long as the network stack | |
345 | * isn't changed. | |
346 | * Do not send INET header. | |
347 | */ | |
348 | data_len = len + sizeof(header) - INET_HDR_SIZE; | |
349 | frame = (struct icn_frame *) (((char *)packet) + INET_HDR_SIZE - | |
350 | sizeof(header)); | |
351 | ||
352 | #ifdef TEST_TX | |
353 | printf("frame: %08x, ", frame); | |
354 | hexdump((unsigned char *)packet, data_len + INET_HDR_SIZE); | |
355 | #endif | |
356 | ||
357 | data_addr = (uint)frame; | |
358 | if (len >= (IP_HDR_SIZE + ETHER_HDR_SIZE)) | |
359 | ip = (IP_t *)(packet + ETHER_HDR_SIZE); | |
360 | /* Is it TFTP? TFTP always uses UDP and the cached dport */ | |
361 | if (ip != NULL && ip->ip_p == IPPROTO_UDP && ip->udp_dst == | |
362 | (ushort)cachedNumbers[TFTP_DST_PORT]) { | |
363 | /* just in case the port wasn't set in the environment */ | |
364 | if (cachedNumbers[TFTP_SRC_PORT] == (ulong)-1) | |
365 | cachedNumbers[TFTP_SRC_PORT] = ip->udp_src; | |
366 | frame->hdr.application = MGS_TFTP; | |
367 | } | |
368 | /* | |
369 | * Is it NETCONSOLE? NETCONSOLE always uses UDP. | |
370 | */ | |
371 | else if (ip != NULL && ip->ip_p == IPPROTO_UDP | |
372 | && ip->udp_dst == (ushort)cachedNumbers[NETCONS_PORT]) { | |
373 | frame->hdr.application = MGS_NETCONS; | |
374 | } else { | |
375 | /* reject unknown packets */ | |
376 | /* may do some check on frame->hdr.application */ | |
377 | dprintf("Unknown packet type in %s, rejected\n", | |
378 | __func__); | |
379 | return -1; | |
380 | } | |
381 | /* | |
382 | * Could extract the target's slot ID from its MAC here, | |
383 | * but u-boot only wants to talk to the active server. | |
384 | * | |
385 | * avoid setting new source address when moving to another slot | |
386 | */ | |
387 | frame->hdr.src_addr = keymile_slot; | |
388 | frame->hdr.dest_addr = HDLC_UACUA; | |
389 | #ifdef TEST_TX | |
390 | { | |
391 | dprintf("TX: "); | |
392 | hexdump((unsigned char *)data_addr, data_len); | |
393 | } | |
394 | #endif | |
395 | ||
396 | flush_cache(data_addr, data_len); | |
397 | rtx->txbd.cbd_bufaddr = data_addr; | |
398 | rtx->txbd.cbd_datlen = data_len; | |
399 | rtx->txbd.cbd_sc |= (BD_SC_READY | BD_SC_TC | BD_SC_LAST | BD_SC_WRAP); | |
400 | ||
401 | while ((rtx->txbd.cbd_sc & BD_SC_READY) && (j < TOUT_LOOP)) { | |
402 | /* will also trigger Wd if needed, but maybe too often */ | |
403 | udelay(1); | |
404 | j++; | |
405 | } | |
406 | if (j >= TOUT_LOOP) | |
407 | dprintf("TX timeout\n"); | |
408 | #ifdef ET_DEBUG | |
409 | dprintf("cycles: %d status: %x\n", j, rtx->txbd.cbd_sc); | |
410 | #endif | |
411 | j = (rtx->txbd.cbd_sc & BD_SC_STATS); /* return only status bits */ | |
412 | return j; | |
413 | } | |
414 | ||
415 | /* | |
416 | * During a receive, the RxIdx points to the current incoming buffer. | |
417 | * When we update through the ring, if the next incoming buffer has | |
418 | * not been given to the system, we just set the empty indicator, | |
419 | * effectively tossing the packet. | |
420 | */ | |
421 | static int keymile_hdlc_enet_recv(struct eth_device *dev) | |
422 | { | |
423 | int length; | |
424 | unsigned char app; | |
425 | struct icn_frame *fp; | |
426 | Ethernet_t *ep; | |
427 | IP_t *ip; | |
428 | ||
429 | for (;;) { | |
430 | if (rtx->rxbd[keymile_rxIdx].cbd_sc & BD_SC_EMPTY) { | |
431 | length = -1; | |
432 | break; /* nothing received - leave for() loop */ | |
433 | } | |
434 | ||
435 | length = rtx->rxbd[keymile_rxIdx].cbd_datlen; | |
436 | #ifdef TEST_RX | |
437 | dprintf("packet %d bytes long\n", length); | |
438 | #endif | |
439 | ||
440 | /* | |
441 | * BD_SC_BR -> LG bit | |
442 | * BD_SC_FR -> NO bit | |
443 | * BD_SC_PR -> AB bit | |
444 | * BD_SC_NAK -> CR bit | |
445 | * 0x80 -> DE bit | |
446 | */ | |
447 | if (rtx->rxbd[keymile_rxIdx].cbd_sc & BD_SC_STATS) { | |
448 | #ifdef ET_DEBUG | |
449 | dprintf("err: %x\n", rtx->rxbd[keymile_rxIdx].cbd_sc); | |
450 | #endif | |
451 | } else if (length > MAX_FRAME_LENGTH) { /* can't happen */ | |
452 | #ifdef ET_DEBUG | |
453 | dprintf("err: packet too big\n"); | |
454 | #endif | |
455 | } else { | |
456 | fp = (struct icn_frame *)(MyRxPackets[keymile_rxIdx] + | |
457 | INET_HDR_ALIGN - INET_HDR_SIZE); | |
458 | #ifdef TEST_RX | |
459 | dprintf("RX %d: ", keymile_rxIdx); | |
460 | hexdump((unsigned char *)MyRxPackets[keymile_rxIdx], | |
461 | INET_HDR_ALIGN + INET_HDR_SIZE + 4); | |
462 | #endif | |
463 | /* copy icn header to the beginning */ | |
464 | memcpy(fp, ((char *)fp + INET_HDR_SIZE), | |
465 | sizeof(struct icn_hdr)); | |
466 | app = fp->hdr.application; | |
467 | if (app == MGS_NETCONS || app == MGS_TFTP) { | |
468 | struct icn_hdr *ih = &fp->hdr; | |
469 | unsigned char icn_src_addr = ih->src_addr; | |
470 | unsigned char icn_dest_addr = ih->dest_addr; | |
471 | ||
472 | /* | |
473 | * expand header by INET_HDR_SIZE | |
474 | */ | |
475 | length += INET_HDR_SIZE; | |
476 | /* initalize header */ | |
477 | memset((char *)fp->data, 0x00, INET_HDR_SIZE); | |
478 | ep = (Ethernet_t *)fp->data; | |
479 | /* set MACs */ | |
480 | ep->et_dest[0] = icn_dest_addr; | |
481 | ep->et_src[0] = icn_src_addr; | |
482 | ep->et_protlen = htons(PROT_IP); | |
483 | /* set ip stuff */ | |
484 | ip = (IP_t *)(fp->data + ETHER_HDR_SIZE); | |
485 | /* set ip addresses */ | |
486 | ip->ip_src = cachedNumbers[IP_SERVER]; | |
487 | ip->ip_dst = cachedNumbers[IP_ADDR]; | |
488 | /* ip length */ | |
489 | ip->ip_len = htons(length - ETHER_HDR_SIZE - | |
490 | REMOVE); | |
491 | /* ip proto */ | |
492 | ip->ip_p = IPPROTO_UDP; | |
493 | switch (app) { | |
494 | case MGS_TFTP: | |
495 | /* swap src/dst port numbers */ | |
496 | ip->udp_src = (ushort) | |
497 | cachedNumbers[TFTP_DST_PORT]; | |
498 | ip->udp_dst = (ushort) | |
499 | cachedNumbers[TFTP_SRC_PORT]; | |
500 | ip->udp_len = ip->ip_len - | |
501 | IP_HDR_SIZE_NO_UDP; | |
502 | ip->udp_xsum = 0; | |
503 | break; | |
504 | case MGS_NETCONS: | |
505 | ip->udp_src = (ushort) | |
506 | cachedNumbers[NETCONS_PORT]; | |
507 | /* | |
508 | * in drivers/net/netconsole.c src port | |
509 | * equals dest port | |
510 | */ | |
511 | ip->udp_dst = ip->udp_src; | |
512 | ip->udp_len = ip->ip_len - | |
513 | IP_HDR_SIZE_NO_UDP; | |
514 | ip->udp_xsum = 0; | |
515 | break; | |
516 | } | |
517 | /* ip version */ | |
518 | ip->ip_hl_v = (0x40) | (0x0f & | |
519 | (IP_HDR_SIZE_NO_UDP / 4)); | |
520 | ip->ip_tos = 0; | |
521 | ip->ip_id = 0; | |
522 | /* flags, fragment offset */ | |
523 | ip->ip_off = htons(0x4000); | |
524 | ip->ip_ttl = 255; /* time to live */ | |
525 | /* have to fixup the checksum */ | |
526 | ip->ip_sum = ~NetCksum((uchar *)ip, | |
527 | IP_HDR_SIZE_NO_UDP / 2); | |
528 | /* | |
529 | * Pass the packet up to the protocol layers | |
530 | * but remove dest_addr, src_addr, application | |
531 | * and the CRC. | |
532 | */ | |
533 | #ifdef TEST_RX | |
534 | hexdump((unsigned char *)fp->data, | |
535 | INET_HDR_SIZE + 4); | |
536 | #endif | |
537 | NetReceive(fp->data, length - REMOVE); | |
538 | } else { | |
539 | /* | |
540 | * the other application types are not yet | |
541 | * supported by u-boot. | |
542 | */ | |
543 | /* normally drop it */ | |
544 | #ifdef TEST_NO | |
545 | /* send it anyway */ | |
546 | fp = (struct icn_frame *) | |
547 | (MyRxPackets[keymile_rxIdx] + | |
548 | INET_HDR_ALIGN); | |
549 | NetReceive(fp->data, length - REMOVE); | |
550 | #endif | |
551 | } | |
552 | } | |
553 | ||
554 | /* Give the buffer back to the SCC. */ | |
555 | rtx->rxbd[keymile_rxIdx].cbd_datlen = 0; | |
556 | ||
557 | /* wrap around buffer index when necessary */ | |
558 | if ((keymile_rxIdx + 1) >= HDLC_PKTBUFSRX) { | |
559 | rtx->rxbd[HDLC_PKTBUFSRX - 1].cbd_sc = | |
560 | (BD_SC_WRAP | BD_SC_EMPTY); | |
561 | keymile_rxIdx = 0; | |
562 | } else { | |
563 | rtx->rxbd[keymile_rxIdx].cbd_sc = BD_SC_EMPTY; | |
564 | keymile_rxIdx++; | |
565 | } | |
566 | } | |
567 | return length; | |
568 | } | |
569 | ||
570 | #ifdef TEST_IT | |
571 | /* simple send test routine */ | |
572 | int hdlc_enet_stest(struct cmd_tbl_s *a, int b, int c, char **d) | |
573 | { | |
574 | unsigned char pkt[2]; | |
575 | int ret; | |
576 | ||
577 | dprintf("enter stest\n"); | |
578 | /* may have to initialize things */ | |
579 | if (seth->state != ETH_STATE_ACTIVE) { | |
580 | /* the bd_t* is not used */ | |
581 | if (seth->init(seth, NULL) >= 0) | |
582 | seth->state = ETH_STATE_ACTIVE; | |
583 | } | |
584 | pkt[0] = 0xea; | |
585 | pkt[1] = 0xae; | |
586 | ret = keymile_hdlc_enet_send(seth, pkt, 2); | |
587 | dprintf("return from send %x\n", ret); | |
588 | dprintf("exit stest\n"); | |
589 | return ret; | |
590 | } | |
591 | U_BOOT_CMD( | |
592 | stest, 1, 1, hdlc_enet_stest, | |
2fb2604d | 593 | "simple send test for hdlc_enet", |
a89c33db | 594 | "" |
135f5534 GJ |
595 | ); |
596 | /* simple receive test routine */ | |
597 | int hdlc_enet_rtest(struct cmd_tbl_s *a, int b, int c, char **d) | |
598 | { | |
599 | int ret; | |
600 | ||
601 | dprintf("enter rtest\n"); | |
602 | /* may have to initialize things */ | |
603 | if (seth->state != ETH_STATE_ACTIVE) { | |
604 | /* the bd_t* is not used */ | |
605 | if (seth->init(seth, NULL) >= 0) | |
606 | seth->state = ETH_STATE_ACTIVE; | |
607 | } | |
608 | ret = keymile_hdlc_enet_recv(seth); | |
609 | dprintf("return from recv %x\n", ret); | |
610 | dprintf("exit rtest\n"); | |
611 | return ret; | |
612 | } | |
613 | U_BOOT_CMD( | |
614 | rtest, 1, 1, hdlc_enet_rtest, | |
2fb2604d | 615 | "simple receive test for hdlc_enet", |
a89c33db | 616 | "" |
135f5534 GJ |
617 | ); |
618 | #endif | |
619 | ||
620 | #endif /* CONFIG_KEYMILE_HDLC_ENET */ |