1 /* 2 * (C) Copyright 2000-2004 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * (C) Copyright 2007 Freescale Semiconductor, Inc. 6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com) 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #include <common.h> 12 #include <malloc.h> 13 #include <command.h> 14 #include <config.h> 15 #include <net.h> 16 #include <miiphy.h> 17 18 #undef ET_DEBUG 19 #undef MII_DEBUG 20 21 /* Ethernet Transmit and Receive Buffers */ 22 #define DBUF_LENGTH 1520 23 #define PKT_MAXBUF_SIZE 1518 24 #define PKT_MINBUF_SIZE 64 25 #define PKT_MAXBLR_SIZE 1536 26 #define LAST_PKTBUFSRX PKTBUFSRX - 1 27 #define BD_ENET_RX_W_E (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY) 28 #define BD_ENET_TX_RDY_LST (BD_ENET_TX_READY | BD_ENET_TX_LAST) 29 #define FIFO_ERRSTAT (FIFO_STAT_RXW | FIFO_STAT_UF | FIFO_STAT_OF) 30 31 /* RxBD bits definitions */ 32 #define BD_ENET_RX_ERR (BD_ENET_RX_LG | BD_ENET_RX_NO | BD_ENET_RX_CR | \ 33 BD_ENET_RX_OV | BD_ENET_RX_TR) 34 35 #include <asm/immap.h> 36 #include <asm/fsl_mcdmafec.h> 37 38 #include "MCD_dma.h" 39 40 DECLARE_GLOBAL_DATA_PTR; 41 42 struct fec_info_dma fec_info[] = { 43 #ifdef CONFIG_SYS_FEC0_IOBASE 44 { 45 0, /* index */ 46 CONFIG_SYS_FEC0_IOBASE, /* io base */ 47 CONFIG_SYS_FEC0_PINMUX, /* gpio pin muxing */ 48 CONFIG_SYS_FEC0_MIIBASE, /* mii base */ 49 -1, /* phy_addr */ 50 0, /* duplex and speed */ 51 0, /* phy name */ 52 0, /* phyname init */ 53 0, /* RX BD */ 54 0, /* TX BD */ 55 0, /* rx Index */ 56 0, /* tx Index */ 57 0, /* tx buffer */ 58 0, /* initialized flag */ 59 (struct fec_info_dma *)-1, /* next */ 60 FEC0_RX_TASK, /* rxTask */ 61 FEC0_TX_TASK, /* txTask */ 62 FEC0_RX_PRIORITY, /* rxPri */ 63 FEC0_TX_PRIORITY, /* txPri */ 64 FEC0_RX_INIT, /* rxInit */ 65 FEC0_TX_INIT, /* txInit */ 66 0, /* usedTbdIndex */ 67 0, /* cleanTbdNum */ 68 }, 69 #endif 70 #ifdef CONFIG_SYS_FEC1_IOBASE 71 { 72 1, /* index */ 73 CONFIG_SYS_FEC1_IOBASE, /* io base */ 74 CONFIG_SYS_FEC1_PINMUX, /* gpio pin muxing */ 75 CONFIG_SYS_FEC1_MIIBASE, /* mii base */ 76 -1, /* phy_addr */ 77 0, /* duplex and speed */ 78 0, /* phy name */ 79 0, /* phy name init */ 80 #ifdef CONFIG_SYS_DMA_USE_INTSRAM 81 (cbd_t *)DBUF_LENGTH, /* RX BD */ 82 #else 83 0, /* RX BD */ 84 #endif 85 0, /* TX BD */ 86 0, /* rx Index */ 87 0, /* tx Index */ 88 0, /* tx buffer */ 89 0, /* initialized flag */ 90 (struct fec_info_dma *)-1, /* next */ 91 FEC1_RX_TASK, /* rxTask */ 92 FEC1_TX_TASK, /* txTask */ 93 FEC1_RX_PRIORITY, /* rxPri */ 94 FEC1_TX_PRIORITY, /* txPri */ 95 FEC1_RX_INIT, /* rxInit */ 96 FEC1_TX_INIT, /* txInit */ 97 0, /* usedTbdIndex */ 98 0, /* cleanTbdNum */ 99 } 100 #endif 101 }; 102 103 static int fec_send(struct eth_device *dev, void *packet, int length); 104 static int fec_recv(struct eth_device *dev); 105 static int fec_init(struct eth_device *dev, bd_t * bd); 106 static void fec_halt(struct eth_device *dev); 107 108 #ifdef ET_DEBUG 109 static void dbg_fec_regs(struct eth_device *dev) 110 { 111 struct fec_info_dma *info = dev->priv; 112 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase); 113 114 printf("=====\n"); 115 printf("ievent %x - %x\n", (int)&fecp->eir, fecp->eir); 116 printf("imask %x - %x\n", (int)&fecp->eimr, fecp->eimr); 117 printf("ecntrl %x - %x\n", (int)&fecp->ecr, fecp->ecr); 118 printf("mii_mframe %x - %x\n", (int)&fecp->mmfr, fecp->mmfr); 119 printf("mii_speed %x - %x\n", (int)&fecp->mscr, fecp->mscr); 120 printf("mii_ctrlstat %x - %x\n", (int)&fecp->mibc, fecp->mibc); 121 printf("r_cntrl %x - %x\n", (int)&fecp->rcr, fecp->rcr); 122 printf("r hash %x - %x\n", (int)&fecp->rhr, fecp->rhr); 123 printf("x_cntrl %x - %x\n", (int)&fecp->tcr, fecp->tcr); 124 printf("padr_l %x - %x\n", (int)&fecp->palr, fecp->palr); 125 printf("padr_u %x - %x\n", (int)&fecp->paur, fecp->paur); 126 printf("op_pause %x - %x\n", (int)&fecp->opd, fecp->opd); 127 printf("iadr_u %x - %x\n", (int)&fecp->iaur, fecp->iaur); 128 printf("iadr_l %x - %x\n", (int)&fecp->ialr, fecp->ialr); 129 printf("gadr_u %x - %x\n", (int)&fecp->gaur, fecp->gaur); 130 printf("gadr_l %x - %x\n", (int)&fecp->galr, fecp->galr); 131 printf("x_wmrk %x - %x\n", (int)&fecp->tfwr, fecp->tfwr); 132 printf("r_fdata %x - %x\n", (int)&fecp->rfdr, fecp->rfdr); 133 printf("r_fstat %x - %x\n", (int)&fecp->rfsr, fecp->rfsr); 134 printf("r_fctrl %x - %x\n", (int)&fecp->rfcr, fecp->rfcr); 135 printf("r_flrfp %x - %x\n", (int)&fecp->rlrfp, fecp->rlrfp); 136 printf("r_flwfp %x - %x\n", (int)&fecp->rlwfp, fecp->rlwfp); 137 printf("r_frfar %x - %x\n", (int)&fecp->rfar, fecp->rfar); 138 printf("r_frfrp %x - %x\n", (int)&fecp->rfrp, fecp->rfrp); 139 printf("r_frfwp %x - %x\n", (int)&fecp->rfwp, fecp->rfwp); 140 printf("t_fdata %x - %x\n", (int)&fecp->tfdr, fecp->tfdr); 141 printf("t_fstat %x - %x\n", (int)&fecp->tfsr, fecp->tfsr); 142 printf("t_fctrl %x - %x\n", (int)&fecp->tfcr, fecp->tfcr); 143 printf("t_flrfp %x - %x\n", (int)&fecp->tlrfp, fecp->tlrfp); 144 printf("t_flwfp %x - %x\n", (int)&fecp->tlwfp, fecp->tlwfp); 145 printf("t_ftfar %x - %x\n", (int)&fecp->tfar, fecp->tfar); 146 printf("t_ftfrp %x - %x\n", (int)&fecp->tfrp, fecp->tfrp); 147 printf("t_ftfwp %x - %x\n", (int)&fecp->tfwp, fecp->tfwp); 148 printf("frst %x - %x\n", (int)&fecp->frst, fecp->frst); 149 printf("ctcwr %x - %x\n", (int)&fecp->ctcwr, fecp->ctcwr); 150 } 151 #endif 152 153 static void set_fec_duplex_speed(volatile fecdma_t * fecp, bd_t * bd, 154 int dup_spd) 155 { 156 if ((dup_spd >> 16) == FULL) { 157 /* Set maximum frame length */ 158 fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | FEC_RCR_MII_MODE | 159 FEC_RCR_PROM | 0x100; 160 fecp->tcr = FEC_TCR_FDEN; 161 } else { 162 /* Half duplex mode */ 163 fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | 164 FEC_RCR_MII_MODE | FEC_RCR_DRT; 165 fecp->tcr &= ~FEC_TCR_FDEN; 166 } 167 168 if ((dup_spd & 0xFFFF) == _100BASET) { 169 #ifdef MII_DEBUG 170 printf("100Mbps\n"); 171 #endif 172 bd->bi_ethspeed = 100; 173 } else { 174 #ifdef MII_DEBUG 175 printf("10Mbps\n"); 176 #endif 177 bd->bi_ethspeed = 10; 178 } 179 } 180 181 static int fec_send(struct eth_device *dev, void *packet, int length) 182 { 183 struct fec_info_dma *info = dev->priv; 184 cbd_t *pTbd, *pUsedTbd; 185 u16 phyStatus; 186 187 miiphy_read(dev->name, info->phy_addr, MII_BMSR, &phyStatus); 188 189 /* process all the consumed TBDs */ 190 while (info->cleanTbdNum < CONFIG_SYS_TX_ETH_BUFFER) { 191 pUsedTbd = &info->txbd[info->usedTbdIdx]; 192 if (pUsedTbd->cbd_sc & BD_ENET_TX_READY) { 193 #ifdef ET_DEBUG 194 printf("Cannot clean TBD %d, in use\n", 195 info->cleanTbdNum); 196 #endif 197 return 0; 198 } 199 200 /* clean this buffer descriptor */ 201 if (info->usedTbdIdx == (CONFIG_SYS_TX_ETH_BUFFER - 1)) 202 pUsedTbd->cbd_sc = BD_ENET_TX_WRAP; 203 else 204 pUsedTbd->cbd_sc = 0; 205 206 /* update some indeces for a correct handling of the TBD ring */ 207 info->cleanTbdNum++; 208 info->usedTbdIdx = (info->usedTbdIdx + 1) % CONFIG_SYS_TX_ETH_BUFFER; 209 } 210 211 /* Check for valid length of data. */ 212 if ((length > 1500) || (length <= 0)) { 213 return -1; 214 } 215 216 /* Check the number of vacant TxBDs. */ 217 if (info->cleanTbdNum < 1) { 218 printf("No available TxBDs ...\n"); 219 return -1; 220 } 221 222 /* Get the first TxBD to send the mac header */ 223 pTbd = &info->txbd[info->txIdx]; 224 pTbd->cbd_datlen = length; 225 pTbd->cbd_bufaddr = (u32) packet; 226 pTbd->cbd_sc |= BD_ENET_TX_LAST | BD_ENET_TX_TC | BD_ENET_TX_READY; 227 info->txIdx = (info->txIdx + 1) % CONFIG_SYS_TX_ETH_BUFFER; 228 229 /* Enable DMA transmit task */ 230 MCD_continDma(info->txTask); 231 232 info->cleanTbdNum -= 1; 233 234 /* wait until frame is sent . */ 235 while (pTbd->cbd_sc & BD_ENET_TX_READY) { 236 udelay(10); 237 } 238 239 return (int)(info->txbd[info->txIdx].cbd_sc & BD_ENET_TX_STATS); 240 } 241 242 static int fec_recv(struct eth_device *dev) 243 { 244 struct fec_info_dma *info = dev->priv; 245 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase); 246 247 cbd_t *prbd = &info->rxbd[info->rxIdx]; 248 u32 ievent; 249 int frame_length, len = 0; 250 251 /* Check if any critical events have happened */ 252 ievent = fecp->eir; 253 if (ievent != 0) { 254 fecp->eir = ievent; 255 256 if (ievent & (FEC_EIR_BABT | FEC_EIR_TXERR | FEC_EIR_RXERR)) { 257 printf("fec_recv: error\n"); 258 fec_halt(dev); 259 fec_init(dev, NULL); 260 return 0; 261 } 262 263 if (ievent & FEC_EIR_HBERR) { 264 /* Heartbeat error */ 265 fecp->tcr |= FEC_TCR_GTS; 266 } 267 268 if (ievent & FEC_EIR_GRA) { 269 /* Graceful stop complete */ 270 if (fecp->tcr & FEC_TCR_GTS) { 271 printf("fec_recv: tcr_gts\n"); 272 fec_halt(dev); 273 fecp->tcr &= ~FEC_TCR_GTS; 274 fec_init(dev, NULL); 275 } 276 } 277 } 278 279 if (!(prbd->cbd_sc & BD_ENET_RX_EMPTY)) { 280 if ((prbd->cbd_sc & BD_ENET_RX_LAST) && 281 !(prbd->cbd_sc & BD_ENET_RX_ERR) && 282 ((prbd->cbd_datlen - 4) > 14)) { 283 284 /* Get buffer address and size */ 285 frame_length = prbd->cbd_datlen - 4; 286 287 /* Fill the buffer and pass it to upper layers */ 288 net_process_received_packet((uchar *)prbd->cbd_bufaddr, 289 frame_length); 290 len = frame_length; 291 } 292 293 /* Reset buffer descriptor as empty */ 294 if ((info->rxIdx) == (PKTBUFSRX - 1)) 295 prbd->cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY); 296 else 297 prbd->cbd_sc = BD_ENET_RX_EMPTY; 298 299 prbd->cbd_datlen = PKTSIZE_ALIGN; 300 301 /* Now, we have an empty RxBD, restart the DMA receive task */ 302 MCD_continDma(info->rxTask); 303 304 /* Increment BD count */ 305 info->rxIdx = (info->rxIdx + 1) % PKTBUFSRX; 306 } 307 308 return len; 309 } 310 311 static void fec_set_hwaddr(volatile fecdma_t * fecp, u8 * mac) 312 { 313 u8 currByte; /* byte for which to compute the CRC */ 314 int byte; /* loop - counter */ 315 int bit; /* loop - counter */ 316 u32 crc = 0xffffffff; /* initial value */ 317 318 for (byte = 0; byte < 6; byte++) { 319 currByte = mac[byte]; 320 for (bit = 0; bit < 8; bit++) { 321 if ((currByte & 0x01) ^ (crc & 0x01)) { 322 crc >>= 1; 323 crc = crc ^ 0xedb88320; 324 } else { 325 crc >>= 1; 326 } 327 currByte >>= 1; 328 } 329 } 330 331 crc = crc >> 26; 332 333 /* Set individual hash table register */ 334 if (crc >= 32) { 335 fecp->ialr = (1 << (crc - 32)); 336 fecp->iaur = 0; 337 } else { 338 fecp->ialr = 0; 339 fecp->iaur = (1 << crc); 340 } 341 342 /* Set physical address */ 343 fecp->palr = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3]; 344 fecp->paur = (mac[4] << 24) + (mac[5] << 16) + 0x8808; 345 346 /* Clear multicast address hash table */ 347 fecp->gaur = 0; 348 fecp->galr = 0; 349 } 350 351 static int fec_init(struct eth_device *dev, bd_t * bd) 352 { 353 struct fec_info_dma *info = dev->priv; 354 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase); 355 int i; 356 uchar enetaddr[6]; 357 358 #ifdef ET_DEBUG 359 printf("fec_init: iobase 0x%08x ...\n", info->iobase); 360 #endif 361 362 fecpin_setclear(dev, 1); 363 364 fec_halt(dev); 365 366 #if defined(CONFIG_CMD_MII) || defined (CONFIG_MII) || \ 367 defined (CONFIG_SYS_DISCOVER_PHY) 368 369 mii_init(); 370 371 set_fec_duplex_speed(fecp, bd, info->dup_spd); 372 #else 373 #ifndef CONFIG_SYS_DISCOVER_PHY 374 set_fec_duplex_speed(fecp, bd, (FECDUPLEX << 16) | FECSPEED); 375 #endif /* ifndef CONFIG_SYS_DISCOVER_PHY */ 376 #endif /* CONFIG_CMD_MII || CONFIG_MII */ 377 378 /* We use strictly polling mode only */ 379 fecp->eimr = 0; 380 381 /* Clear any pending interrupt */ 382 fecp->eir = 0xffffffff; 383 384 /* Set station address */ 385 if ((u32) fecp == CONFIG_SYS_FEC0_IOBASE) 386 eth_getenv_enetaddr("ethaddr", enetaddr); 387 else 388 eth_getenv_enetaddr("eth1addr", enetaddr); 389 fec_set_hwaddr(fecp, enetaddr); 390 391 /* Set Opcode/Pause Duration Register */ 392 fecp->opd = 0x00010020; 393 394 /* Setup Buffers and Buffer Desriptors */ 395 info->rxIdx = 0; 396 info->txIdx = 0; 397 398 /* Setup Receiver Buffer Descriptors (13.14.24.18) 399 * Settings: Empty, Wrap */ 400 for (i = 0; i < PKTBUFSRX; i++) { 401 info->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY; 402 info->rxbd[i].cbd_datlen = PKTSIZE_ALIGN; 403 info->rxbd[i].cbd_bufaddr = (uint) net_rx_packets[i]; 404 } 405 info->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP; 406 407 /* Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19) 408 * Settings: Last, Tx CRC */ 409 for (i = 0; i < CONFIG_SYS_TX_ETH_BUFFER; i++) { 410 info->txbd[i].cbd_sc = 0; 411 info->txbd[i].cbd_datlen = 0; 412 info->txbd[i].cbd_bufaddr = (uint) (&info->txbuf[0]); 413 } 414 info->txbd[CONFIG_SYS_TX_ETH_BUFFER - 1].cbd_sc |= BD_ENET_TX_WRAP; 415 416 info->usedTbdIdx = 0; 417 info->cleanTbdNum = CONFIG_SYS_TX_ETH_BUFFER; 418 419 /* Set Rx FIFO alarm and granularity value */ 420 fecp->rfcr = 0x0c000000; 421 fecp->rfar = 0x0000030c; 422 423 /* Set Tx FIFO granularity value */ 424 fecp->tfcr = FIFO_CTRL_FRAME | FIFO_CTRL_GR(6) | 0x00040000; 425 fecp->tfar = 0x00000080; 426 427 fecp->tfwr = 0x2; 428 fecp->ctcwr = 0x03000000; 429 430 /* Enable DMA receive task */ 431 MCD_startDma(info->rxTask, /* Dma channel */ 432 (s8 *) info->rxbd, /*Source Address */ 433 0, /* Source increment */ 434 (s8 *) (&fecp->rfdr), /* dest */ 435 4, /* dest increment */ 436 0, /* DMA size */ 437 4, /* xfer size */ 438 info->rxInit, /* initiator */ 439 info->rxPri, /* priority */ 440 (MCD_FECRX_DMA | MCD_TT_FLAGS_DEF), /* Flags */ 441 (MCD_NO_CSUM | MCD_NO_BYTE_SWAP) /* Function description */ 442 ); 443 444 /* Enable DMA tx task with no ready buffer descriptors */ 445 MCD_startDma(info->txTask, /* Dma channel */ 446 (s8 *) info->txbd, /*Source Address */ 447 0, /* Source increment */ 448 (s8 *) (&fecp->tfdr), /* dest */ 449 4, /* dest incr */ 450 0, /* DMA size */ 451 4, /* xfer size */ 452 info->txInit, /* initiator */ 453 info->txPri, /* priority */ 454 (MCD_FECTX_DMA | MCD_TT_FLAGS_DEF), /* Flags */ 455 (MCD_NO_CSUM | MCD_NO_BYTE_SWAP) /* Function description */ 456 ); 457 458 /* Now enable the transmit and receive processing */ 459 fecp->ecr |= FEC_ECR_ETHER_EN; 460 461 return 1; 462 } 463 464 static void fec_halt(struct eth_device *dev) 465 { 466 struct fec_info_dma *info = dev->priv; 467 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase); 468 int counter = 0xffff; 469 470 /* issue graceful stop command to the FEC transmitter if necessary */ 471 fecp->tcr |= FEC_TCR_GTS; 472 473 /* wait for graceful stop to register */ 474 while ((counter--) && (!(fecp->eir & FEC_EIR_GRA))) ; 475 476 /* Disable DMA tasks */ 477 MCD_killDma(info->txTask); 478 MCD_killDma(info->rxTask);; 479 480 /* Disable the Ethernet Controller */ 481 fecp->ecr &= ~FEC_ECR_ETHER_EN; 482 483 /* Clear FIFO status registers */ 484 fecp->rfsr &= FIFO_ERRSTAT; 485 fecp->tfsr &= FIFO_ERRSTAT; 486 487 fecp->frst = 0x01000000; 488 489 /* Issue a reset command to the FEC chip */ 490 fecp->ecr |= FEC_ECR_RESET; 491 492 /* wait at least 20 clock cycles */ 493 udelay(10000); 494 495 #ifdef ET_DEBUG 496 printf("Ethernet task stopped\n"); 497 #endif 498 } 499 500 int mcdmafec_initialize(bd_t * bis) 501 { 502 struct eth_device *dev; 503 int i; 504 #ifdef CONFIG_SYS_DMA_USE_INTSRAM 505 u32 tmp = CONFIG_SYS_INTSRAM + 0x2000; 506 #endif 507 508 for (i = 0; i < ARRAY_SIZE(fec_info); i++) { 509 510 dev = 511 (struct eth_device *)memalign(CONFIG_SYS_CACHELINE_SIZE, 512 sizeof *dev); 513 if (dev == NULL) 514 hang(); 515 516 memset(dev, 0, sizeof(*dev)); 517 518 sprintf(dev->name, "FEC%d", fec_info[i].index); 519 520 dev->priv = &fec_info[i]; 521 dev->init = fec_init; 522 dev->halt = fec_halt; 523 dev->send = fec_send; 524 dev->recv = fec_recv; 525 526 /* setup Receive and Transmit buffer descriptor */ 527 #ifdef CONFIG_SYS_DMA_USE_INTSRAM 528 fec_info[i].rxbd = (cbd_t *)((u32)fec_info[i].rxbd + tmp); 529 tmp = (u32)fec_info[i].rxbd; 530 fec_info[i].txbd = 531 (cbd_t *)((u32)fec_info[i].txbd + tmp + 532 (PKTBUFSRX * sizeof(cbd_t))); 533 tmp = (u32)fec_info[i].txbd; 534 fec_info[i].txbuf = 535 (char *)((u32)fec_info[i].txbuf + tmp + 536 (CONFIG_SYS_TX_ETH_BUFFER * sizeof(cbd_t))); 537 tmp = (u32)fec_info[i].txbuf; 538 #else 539 fec_info[i].rxbd = 540 (cbd_t *) memalign(CONFIG_SYS_CACHELINE_SIZE, 541 (PKTBUFSRX * sizeof(cbd_t))); 542 fec_info[i].txbd = 543 (cbd_t *) memalign(CONFIG_SYS_CACHELINE_SIZE, 544 (CONFIG_SYS_TX_ETH_BUFFER * sizeof(cbd_t))); 545 fec_info[i].txbuf = 546 (char *)memalign(CONFIG_SYS_CACHELINE_SIZE, DBUF_LENGTH); 547 #endif 548 549 #ifdef ET_DEBUG 550 printf("rxbd %x txbd %x\n", 551 (int)fec_info[i].rxbd, (int)fec_info[i].txbd); 552 #endif 553 554 fec_info[i].phy_name = (char *)memalign(CONFIG_SYS_CACHELINE_SIZE, 32); 555 556 eth_register(dev); 557 558 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) 559 int retval; 560 struct mii_dev *mdiodev = mdio_alloc(); 561 if (!mdiodev) 562 return -ENOMEM; 563 strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN); 564 mdiodev->read = mcffec_miiphy_read; 565 mdiodev->write = mcffec_miiphy_write; 566 567 retval = mdio_register(mdiodev); 568 if (retval < 0) 569 return retval; 570 #endif 571 572 if (i > 0) 573 fec_info[i - 1].next = &fec_info[i]; 574 } 575 fec_info[i - 1].next = &fec_info[0]; 576 577 /* default speed */ 578 bis->bi_ethspeed = 10; 579 580 return 0; 581 } 582