git.sur5r.net Git - u-boot/blob - drivers/net/sh_eth.c

   1 /*
   2  * sh_eth.c - Driver for Renesas ethernet controller.
   3  *
   4  * Copyright (C) 2008, 2011 Renesas Solutions Corp.
   5  * Copyright (c) 2008, 2011, 2014 2014 Nobuhiro Iwamatsu
   6  * Copyright (c) 2007 Carlos Munoz <carlos@kenati.com>
   7  * Copyright (C) 2013, 2014 Renesas Electronics Corporation
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #include <config.h>
  13 #include <common.h>
  14 #include <malloc.h>
  15 #include <net.h>
  16 #include <netdev.h>
  17 #include <miiphy.h>
  18 #include <linux/errno.h>
  19 #include <asm/io.h>
  20
  21 #include "sh_eth.h"
  22
  23 #ifndef CONFIG_SH_ETHER_USE_PORT
  24 # error "Please define CONFIG_SH_ETHER_USE_PORT"
  25 #endif
  26 #ifndef CONFIG_SH_ETHER_PHY_ADDR
  27 # error "Please define CONFIG_SH_ETHER_PHY_ADDR"
  28 #endif
  29
  30 #if defined(CONFIG_SH_ETHER_CACHE_WRITEBACK) && !defined(CONFIG_SYS_DCACHE_OFF)
  31 #define flush_cache_wback(addr, len)    \
  32                 flush_dcache_range((u32)addr, (u32)(addr + len - 1))
  33 #else
  34 #define flush_cache_wback(...)
  35 #endif
  36
  37 #if defined(CONFIG_SH_ETHER_CACHE_INVALIDATE) && defined(CONFIG_ARM)
  38 #define invalidate_cache(addr, len)             \
  39         {       \
  40                 u32 line_size = CONFIG_SH_ETHER_ALIGNE_SIZE;    \
  41                 u32 start, end; \
  42                 \
  43                 start = (u32)addr;      \
  44                 end = start + len;      \
  45                 start &= ~(line_size - 1);      \
  46                 end = ((end + line_size - 1) & ~(line_size - 1));       \
  47                 \
  48                 invalidate_dcache_range(start, end);    \
  49         }
  50 #else
  51 #define invalidate_cache(...)
  52 #endif
  53
  54 #define TIMEOUT_CNT 1000
  55
  56 int sh_eth_send(struct eth_device *dev, void *packet, int len)
  57 {
  58         struct sh_eth_dev *eth = dev->priv;
  59         int port = eth->port, ret = 0, timeout;
  60         struct sh_eth_info *port_info = &eth->port_info[port];
  61
  62         if (!packet || len > 0xffff) {
  63                 printf(SHETHER_NAME ": %s: Invalid argument\n", __func__);
  64                 ret = -EINVAL;
  65                 goto err;
  66         }
  67
  68         /* packet must be a 4 byte boundary */
  69         if ((int)packet & 3) {
  70                 printf(SHETHER_NAME ": %s: packet not 4 byte aligned\n"
  71                                 , __func__);
  72                 ret = -EFAULT;
  73                 goto err;
  74         }
  75
  76         /* Update tx descriptor */
  77         flush_cache_wback(packet, len);
  78         port_info->tx_desc_cur->td2 = ADDR_TO_PHY(packet);
  79         port_info->tx_desc_cur->td1 = len << 16;
  80         /* Must preserve the end of descriptor list indication */
  81         if (port_info->tx_desc_cur->td0 & TD_TDLE)
  82                 port_info->tx_desc_cur->td0 = TD_TACT | TD_TFP | TD_TDLE;
  83         else
  84                 port_info->tx_desc_cur->td0 = TD_TACT | TD_TFP;
  85
  86         flush_cache_wback(port_info->tx_desc_cur, sizeof(struct tx_desc_s));
  87
  88         /* Restart the transmitter if disabled */
  89         if (!(sh_eth_read(eth, EDTRR) & EDTRR_TRNS))
  90                 sh_eth_write(eth, EDTRR_TRNS, EDTRR);
  91
  92         /* Wait until packet is transmitted */
  93         timeout = TIMEOUT_CNT;
  94         do {
  95                 invalidate_cache(port_info->tx_desc_cur,
  96                                  sizeof(struct tx_desc_s));
  97                 udelay(100);
  98         } while (port_info->tx_desc_cur->td0 & TD_TACT && timeout--);
  99
 100         if (timeout < 0) {
 101                 printf(SHETHER_NAME ": transmit timeout\n");
 102                 ret = -ETIMEDOUT;
 103                 goto err;
 104         }
 105
 106         port_info->tx_desc_cur++;
 107         if (port_info->tx_desc_cur >= port_info->tx_desc_base + NUM_TX_DESC)
 108                 port_info->tx_desc_cur = port_info->tx_desc_base;
 109
 110 err:
 111         return ret;
 112 }
 113
 114 int sh_eth_recv(struct eth_device *dev)
 115 {
 116         struct sh_eth_dev *eth = dev->priv;
 117         int port = eth->port, len = 0;
 118         struct sh_eth_info *port_info = &eth->port_info[port];
 119         uchar *packet;
 120
 121         /* Check if the rx descriptor is ready */
 122         invalidate_cache(port_info->rx_desc_cur, sizeof(struct rx_desc_s));
 123         if (!(port_info->rx_desc_cur->rd0 & RD_RACT)) {
 124                 /* Check for errors */
 125                 if (!(port_info->rx_desc_cur->rd0 & RD_RFE)) {
 126                         len = port_info->rx_desc_cur->rd1 & 0xffff;
 127                         packet = (uchar *)
 128                                 ADDR_TO_P2(port_info->rx_desc_cur->rd2);
 129                         invalidate_cache(packet, len);
 130                         net_process_received_packet(packet, len);
 131                 }
 132
 133                 /* Make current descriptor available again */
 134                 if (port_info->rx_desc_cur->rd0 & RD_RDLE)
 135                         port_info->rx_desc_cur->rd0 = RD_RACT | RD_RDLE;
 136                 else
 137                         port_info->rx_desc_cur->rd0 = RD_RACT;
 138
 139                 flush_cache_wback(port_info->rx_desc_cur,
 140                                   sizeof(struct rx_desc_s));
 141
 142                 /* Point to the next descriptor */
 143                 port_info->rx_desc_cur++;
 144                 if (port_info->rx_desc_cur >=
 145                     port_info->rx_desc_base + NUM_RX_DESC)
 146                         port_info->rx_desc_cur = port_info->rx_desc_base;
 147         }
 148
 149         /* Restart the receiver if disabled */
 150         if (!(sh_eth_read(eth, EDRRR) & EDRRR_R))
 151                 sh_eth_write(eth, EDRRR_R, EDRRR);
 152
 153         return len;
 154 }
 155
 156 static int sh_eth_reset(struct sh_eth_dev *eth)
 157 {
 158 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 159         int ret = 0, i;
 160
 161         /* Start e-dmac transmitter and receiver */
 162         sh_eth_write(eth, EDSR_ENALL, EDSR);
 163
 164         /* Perform a software reset and wait for it to complete */
 165         sh_eth_write(eth, EDMR_SRST, EDMR);
 166         for (i = 0; i < TIMEOUT_CNT; i++) {
 167                 if (!(sh_eth_read(eth, EDMR) & EDMR_SRST))
 168                         break;
 169                 udelay(1000);
 170         }
 171
 172         if (i == TIMEOUT_CNT) {
 173                 printf(SHETHER_NAME  ": Software reset timeout\n");
 174                 ret = -EIO;
 175         }
 176
 177         return ret;
 178 #else
 179         sh_eth_write(eth, sh_eth_read(eth, EDMR) | EDMR_SRST, EDMR);
 180         udelay(3000);
 181         sh_eth_write(eth, sh_eth_read(eth, EDMR) & ~EDMR_SRST, EDMR);
 182
 183         return 0;
 184 #endif
 185 }
 186
 187 static int sh_eth_tx_desc_init(struct sh_eth_dev *eth)
 188 {
 189         int port = eth->port, i, ret = 0;
 190         u32 alloc_desc_size = NUM_TX_DESC * sizeof(struct tx_desc_s);
 191         struct sh_eth_info *port_info = &eth->port_info[port];
 192         struct tx_desc_s *cur_tx_desc;
 193
 194         /*
 195          * Allocate rx descriptors. They must be aligned to size of struct
 196          * tx_desc_s.
 197          */
 198         port_info->tx_desc_alloc =
 199                 memalign(sizeof(struct tx_desc_s), alloc_desc_size);
 200         if (!port_info->tx_desc_alloc) {
 201                 printf(SHETHER_NAME ": memalign failed\n");
 202                 ret = -ENOMEM;
 203                 goto err;
 204         }
 205
 206         flush_cache_wback((u32)port_info->tx_desc_alloc, alloc_desc_size);
 207
 208         /* Make sure we use a P2 address (non-cacheable) */
 209         port_info->tx_desc_base =
 210                 (struct tx_desc_s *)ADDR_TO_P2((u32)port_info->tx_desc_alloc);
 211         port_info->tx_desc_cur = port_info->tx_desc_base;
 212
 213         /* Initialize all descriptors */
 214         for (cur_tx_desc = port_info->tx_desc_base, i = 0; i < NUM_TX_DESC;
 215              cur_tx_desc++, i++) {
 216                 cur_tx_desc->td0 = 0x00;
 217                 cur_tx_desc->td1 = 0x00;
 218                 cur_tx_desc->td2 = 0x00;
 219         }
 220
 221         /* Mark the end of the descriptors */
 222         cur_tx_desc--;
 223         cur_tx_desc->td0 |= TD_TDLE;
 224
 225         /*
 226          * Point the controller to the tx descriptor list. Must use physical
 227          * addresses
 228          */
 229         sh_eth_write(eth, ADDR_TO_PHY(port_info->tx_desc_base), TDLAR);
 230 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 231         sh_eth_write(eth, ADDR_TO_PHY(port_info->tx_desc_base), TDFAR);
 232         sh_eth_write(eth, ADDR_TO_PHY(cur_tx_desc), TDFXR);
 233         sh_eth_write(eth, 0x01, TDFFR);/* Last discriptor bit */
 234 #endif
 235
 236 err:
 237         return ret;
 238 }
 239
 240 static int sh_eth_rx_desc_init(struct sh_eth_dev *eth)
 241 {
 242         int port = eth->port, i, ret = 0;
 243         u32 alloc_desc_size = NUM_RX_DESC * sizeof(struct rx_desc_s);
 244         struct sh_eth_info *port_info = &eth->port_info[port];
 245         struct rx_desc_s *cur_rx_desc;
 246         u8 *rx_buf;
 247
 248         /*
 249          * Allocate rx descriptors. They must be aligned to size of struct
 250          * rx_desc_s.
 251          */
 252         port_info->rx_desc_alloc =
 253                 memalign(sizeof(struct rx_desc_s), alloc_desc_size);
 254         if (!port_info->rx_desc_alloc) {
 255                 printf(SHETHER_NAME ": memalign failed\n");
 256                 ret = -ENOMEM;
 257                 goto err;
 258         }
 259
 260         flush_cache_wback(port_info->rx_desc_alloc, alloc_desc_size);
 261
 262         /* Make sure we use a P2 address (non-cacheable) */
 263         port_info->rx_desc_base =
 264                 (struct rx_desc_s *)ADDR_TO_P2((u32)port_info->rx_desc_alloc);
 265
 266         port_info->rx_desc_cur = port_info->rx_desc_base;
 267
 268         /*
 269          * Allocate rx data buffers. They must be RX_BUF_ALIGNE_SIZE bytes
 270          * aligned and in P2 area.
 271          */
 272         port_info->rx_buf_alloc =
 273                 memalign(RX_BUF_ALIGNE_SIZE, NUM_RX_DESC * MAX_BUF_SIZE);
 274         if (!port_info->rx_buf_alloc) {
 275                 printf(SHETHER_NAME ": alloc failed\n");
 276                 ret = -ENOMEM;
 277                 goto err_buf_alloc;
 278         }
 279
 280         port_info->rx_buf_base = (u8 *)ADDR_TO_P2((u32)port_info->rx_buf_alloc);
 281
 282         /* Initialize all descriptors */
 283         for (cur_rx_desc = port_info->rx_desc_base,
 284              rx_buf = port_info->rx_buf_base, i = 0;
 285              i < NUM_RX_DESC; cur_rx_desc++, rx_buf += MAX_BUF_SIZE, i++) {
 286                 cur_rx_desc->rd0 = RD_RACT;
 287                 cur_rx_desc->rd1 = MAX_BUF_SIZE << 16;
 288                 cur_rx_desc->rd2 = (u32)ADDR_TO_PHY(rx_buf);
 289         }
 290
 291         /* Mark the end of the descriptors */
 292         cur_rx_desc--;
 293         cur_rx_desc->rd0 |= RD_RDLE;
 294
 295         /* Point the controller to the rx descriptor list */
 296         sh_eth_write(eth, ADDR_TO_PHY(port_info->rx_desc_base), RDLAR);
 297 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 298         sh_eth_write(eth, ADDR_TO_PHY(port_info->rx_desc_base), RDFAR);
 299         sh_eth_write(eth, ADDR_TO_PHY(cur_rx_desc), RDFXR);
 300         sh_eth_write(eth, RDFFR_RDLF, RDFFR);
 301 #endif
 302
 303         return ret;
 304
 305 err_buf_alloc:
 306         free(port_info->rx_desc_alloc);
 307         port_info->rx_desc_alloc = NULL;
 308
 309 err:
 310         return ret;
 311 }
 312
 313 static void sh_eth_tx_desc_free(struct sh_eth_dev *eth)
 314 {
 315         int port = eth->port;
 316         struct sh_eth_info *port_info = &eth->port_info[port];
 317
 318         if (port_info->tx_desc_alloc) {
 319                 free(port_info->tx_desc_alloc);
 320                 port_info->tx_desc_alloc = NULL;
 321         }
 322 }
 323
 324 static void sh_eth_rx_desc_free(struct sh_eth_dev *eth)
 325 {
 326         int port = eth->port;
 327         struct sh_eth_info *port_info = &eth->port_info[port];
 328
 329         if (port_info->rx_desc_alloc) {
 330                 free(port_info->rx_desc_alloc);
 331                 port_info->rx_desc_alloc = NULL;
 332         }
 333
 334         if (port_info->rx_buf_alloc) {
 335                 free(port_info->rx_buf_alloc);
 336                 port_info->rx_buf_alloc = NULL;
 337         }
 338 }
 339
 340 static int sh_eth_desc_init(struct sh_eth_dev *eth)
 341 {
 342         int ret = 0;
 343
 344         ret = sh_eth_tx_desc_init(eth);
 345         if (ret)
 346                 goto err_tx_init;
 347
 348         ret = sh_eth_rx_desc_init(eth);
 349         if (ret)
 350                 goto err_rx_init;
 351
 352         return ret;
 353 err_rx_init:
 354         sh_eth_tx_desc_free(eth);
 355
 356 err_tx_init:
 357         return ret;
 358 }
 359
 360 static int sh_eth_phy_config(struct sh_eth_dev *eth)
 361 {
 362         int port = eth->port, ret = 0;
 363         struct sh_eth_info *port_info = &eth->port_info[port];
 364         struct eth_device *dev = port_info->dev;
 365         struct phy_device *phydev;
 366
 367         phydev = phy_connect(
 368                         miiphy_get_dev_by_name(dev->name),
 369                         port_info->phy_addr, dev, CONFIG_SH_ETHER_PHY_MODE);
 370         port_info->phydev = phydev;
 371         phy_config(phydev);
 372
 373         return ret;
 374 }
 375
 376 static int sh_eth_config(struct sh_eth_dev *eth)
 377 {
 378         int port = eth->port, ret = 0;
 379         u32 val;
 380         struct sh_eth_info *port_info = &eth->port_info[port];
 381         struct eth_device *dev = port_info->dev;
 382         struct phy_device *phy;
 383
 384         /* Configure e-dmac registers */
 385         sh_eth_write(eth, (sh_eth_read(eth, EDMR) & ~EMDR_DESC_R) |
 386                         (EMDR_DESC | EDMR_EL), EDMR);
 387
 388         sh_eth_write(eth, 0, EESIPR);
 389         sh_eth_write(eth, 0, TRSCER);
 390         sh_eth_write(eth, 0, TFTR);
 391         sh_eth_write(eth, (FIFO_SIZE_T | FIFO_SIZE_R), FDR);
 392         sh_eth_write(eth, RMCR_RST, RMCR);
 393 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 394         sh_eth_write(eth, 0, RPADIR);
 395 #endif
 396         sh_eth_write(eth, (FIFO_F_D_RFF | FIFO_F_D_RFD), FCFTR);
 397
 398         /* Configure e-mac registers */
 399         sh_eth_write(eth, 0, ECSIPR);
 400
 401         /* Set Mac address */
 402         val = dev->enetaddr[0] << 24 | dev->enetaddr[1] << 16 |
 403             dev->enetaddr[2] << 8 | dev->enetaddr[3];
 404         sh_eth_write(eth, val, MAHR);
 405
 406         val = dev->enetaddr[4] << 8 | dev->enetaddr[5];
 407         sh_eth_write(eth, val, MALR);
 408
 409         sh_eth_write(eth, RFLR_RFL_MIN, RFLR);
 410 #if defined(SH_ETH_TYPE_GETHER)
 411         sh_eth_write(eth, 0, PIPR);
 412 #endif
 413 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 414         sh_eth_write(eth, APR_AP, APR);
 415         sh_eth_write(eth, MPR_MP, MPR);
 416         sh_eth_write(eth, TPAUSER_TPAUSE, TPAUSER);
 417 #endif
 418
 419 #if defined(CONFIG_CPU_SH7734) || defined(CONFIG_R8A7740)
 420         sh_eth_write(eth, CONFIG_SH_ETHER_SH7734_MII, RMII_MII);
 421 #elif defined(CONFIG_R8A7790) || defined(CONFIG_R8A7791) || \
 422         defined(CONFIG_R8A7793) || defined(CONFIG_R8A7794)
 423         sh_eth_write(eth, sh_eth_read(eth, RMIIMR) | 0x1, RMIIMR);
 424 #endif
 425         /* Configure phy */
 426         ret = sh_eth_phy_config(eth);
 427         if (ret) {
 428                 printf(SHETHER_NAME ": phy config timeout\n");
 429                 goto err_phy_cfg;
 430         }
 431         phy = port_info->phydev;
 432         ret = phy_startup(phy);
 433         if (ret) {
 434                 printf(SHETHER_NAME ": phy startup failure\n");
 435                 return ret;
 436         }
 437
 438         val = 0;
 439
 440         /* Set the transfer speed */
 441         if (phy->speed == 100) {
 442                 printf(SHETHER_NAME ": 100Base/");
 443 #if defined(SH_ETH_TYPE_GETHER)
 444                 sh_eth_write(eth, GECMR_100B, GECMR);
 445 #elif defined(CONFIG_CPU_SH7757) || defined(CONFIG_CPU_SH7752)
 446                 sh_eth_write(eth, 1, RTRATE);
 447 #elif defined(CONFIG_CPU_SH7724) || defined(CONFIG_R8A7790) || \
 448                 defined(CONFIG_R8A7791) || defined(CONFIG_R8A7793) || \
 449                 defined(CONFIG_R8A7794)
 450                 val = ECMR_RTM;
 451 #endif
 452         } else if (phy->speed == 10) {
 453                 printf(SHETHER_NAME ": 10Base/");
 454 #if defined(SH_ETH_TYPE_GETHER)
 455                 sh_eth_write(eth, GECMR_10B, GECMR);
 456 #elif defined(CONFIG_CPU_SH7757) || defined(CONFIG_CPU_SH7752)
 457                 sh_eth_write(eth, 0, RTRATE);
 458 #endif
 459         }
 460 #if defined(SH_ETH_TYPE_GETHER)
 461         else if (phy->speed == 1000) {
 462                 printf(SHETHER_NAME ": 1000Base/");
 463                 sh_eth_write(eth, GECMR_1000B, GECMR);
 464         }
 465 #endif
 466
 467         /* Check if full duplex mode is supported by the phy */
 468         if (phy->duplex) {
 469                 printf("Full\n");
 470                 sh_eth_write(eth,
 471                              val | (ECMR_CHG_DM | ECMR_RE | ECMR_TE | ECMR_DM),
 472                              ECMR);
 473         } else {
 474                 printf("Half\n");
 475                 sh_eth_write(eth,
 476                              val | (ECMR_CHG_DM | ECMR_RE | ECMR_TE),
 477                              ECMR);
 478         }
 479
 480         return ret;
 481
 482 err_phy_cfg:
 483         return ret;
 484 }
 485
 486 static void sh_eth_start(struct sh_eth_dev *eth)
 487 {
 488         /*
 489          * Enable the e-dmac receiver only. The transmitter will be enabled when
 490          * we have something to transmit
 491          */
 492         sh_eth_write(eth, EDRRR_R, EDRRR);
 493 }
 494
 495 static void sh_eth_stop(struct sh_eth_dev *eth)
 496 {
 497         sh_eth_write(eth, ~EDRRR_R, EDRRR);
 498 }
 499
 500 int sh_eth_init(struct eth_device *dev, bd_t *bd)
 501 {
 502         int ret = 0;
 503         struct sh_eth_dev *eth = dev->priv;
 504
 505         ret = sh_eth_reset(eth);
 506         if (ret)
 507                 goto err;
 508
 509         ret = sh_eth_desc_init(eth);
 510         if (ret)
 511                 goto err;
 512
 513         ret = sh_eth_config(eth);
 514         if (ret)
 515                 goto err_config;
 516
 517         sh_eth_start(eth);
 518
 519         return ret;
 520
 521 err_config:
 522         sh_eth_tx_desc_free(eth);
 523         sh_eth_rx_desc_free(eth);
 524
 525 err:
 526         return ret;
 527 }
 528
 529 void sh_eth_halt(struct eth_device *dev)
 530 {
 531         struct sh_eth_dev *eth = dev->priv;
 532
 533         sh_eth_stop(eth);
 534 }
 535
 536 int sh_eth_initialize(bd_t *bd)
 537 {
 538         int ret = 0;
 539         struct sh_eth_dev *eth = NULL;
 540         struct eth_device *dev = NULL;
 541         struct mii_dev *mdiodev;
 542
 543         eth = (struct sh_eth_dev *)malloc(sizeof(struct sh_eth_dev));
 544         if (!eth) {
 545                 printf(SHETHER_NAME ": %s: malloc failed\n", __func__);
 546                 ret = -ENOMEM;
 547                 goto err;
 548         }
 549
 550         dev = (struct eth_device *)malloc(sizeof(struct eth_device));
 551         if (!dev) {
 552                 printf(SHETHER_NAME ": %s: malloc failed\n", __func__);
 553                 ret = -ENOMEM;
 554                 goto err;
 555         }
 556         memset(dev, 0, sizeof(struct eth_device));
 557         memset(eth, 0, sizeof(struct sh_eth_dev));
 558
 559         eth->port = CONFIG_SH_ETHER_USE_PORT;
 560         eth->port_info[eth->port].phy_addr = CONFIG_SH_ETHER_PHY_ADDR;
 561
 562         dev->priv = (void *)eth;
 563         dev->iobase = 0;
 564         dev->init = sh_eth_init;
 565         dev->halt = sh_eth_halt;
 566         dev->send = sh_eth_send;
 567         dev->recv = sh_eth_recv;
 568         eth->port_info[eth->port].dev = dev;
 569
 570         strcpy(dev->name, SHETHER_NAME);
 571
 572         /* Register Device to EtherNet subsystem  */
 573         eth_register(dev);
 574
 575         bb_miiphy_buses[0].priv = eth;
 576         mdiodev = mdio_alloc();
 577         if (!mdiodev)
 578                 return -ENOMEM;
 579         strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
 580         mdiodev->read = bb_miiphy_read;
 581         mdiodev->write = bb_miiphy_write;
 582
 583         ret = mdio_register(mdiodev);
 584         if (ret < 0)
 585                 return ret;
 586
 587         if (!eth_env_get_enetaddr("ethaddr", dev->enetaddr))
 588                 puts("Please set MAC address\n");
 589
 590         return ret;
 591
 592 err:
 593         if (dev)
 594                 free(dev);
 595
 596         if (eth)
 597                 free(eth);
 598
 599         printf(SHETHER_NAME ": Failed\n");
 600         return ret;
 601 }
 602
 603 /******* for bb_miiphy *******/
 604 static int sh_eth_bb_init(struct bb_miiphy_bus *bus)
 605 {
 606         return 0;
 607 }
 608
 609 static int sh_eth_bb_mdio_active(struct bb_miiphy_bus *bus)
 610 {
 611         struct sh_eth_dev *eth = bus->priv;
 612
 613         sh_eth_write(eth, sh_eth_read(eth, PIR) | PIR_MMD, PIR);
 614
 615         return 0;
 616 }
 617
 618 static int sh_eth_bb_mdio_tristate(struct bb_miiphy_bus *bus)
 619 {
 620         struct sh_eth_dev *eth = bus->priv;
 621
 622         sh_eth_write(eth, sh_eth_read(eth, PIR) & ~PIR_MMD, PIR);
 623
 624         return 0;
 625 }
 626
 627 static int sh_eth_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
 628 {
 629         struct sh_eth_dev *eth = bus->priv;
 630
 631         if (v)
 632                 sh_eth_write(eth, sh_eth_read(eth, PIR) | PIR_MDO, PIR);
 633         else
 634                 sh_eth_write(eth, sh_eth_read(eth, PIR) & ~PIR_MDO, PIR);
 635
 636         return 0;
 637 }
 638
 639 static int sh_eth_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
 640 {
 641         struct sh_eth_dev *eth = bus->priv;
 642
 643         *v = (sh_eth_read(eth, PIR) & PIR_MDI) >> 3;
 644
 645         return 0;
 646 }
 647
 648 static int sh_eth_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
 649 {
 650         struct sh_eth_dev *eth = bus->priv;
 651
 652         if (v)
 653                 sh_eth_write(eth, sh_eth_read(eth, PIR) | PIR_MDC, PIR);
 654         else
 655                 sh_eth_write(eth, sh_eth_read(eth, PIR) & ~PIR_MDC, PIR);
 656
 657         return 0;
 658 }
 659
 660 static int sh_eth_bb_delay(struct bb_miiphy_bus *bus)
 661 {
 662         udelay(10);
 663
 664         return 0;
 665 }
 666
 667 struct bb_miiphy_bus bb_miiphy_buses[] = {
 668         {
 669                 .name           = "sh_eth",
 670                 .init           = sh_eth_bb_init,
 671                 .mdio_active    = sh_eth_bb_mdio_active,
 672                 .mdio_tristate  = sh_eth_bb_mdio_tristate,
 673                 .set_mdio       = sh_eth_bb_set_mdio,
 674                 .get_mdio       = sh_eth_bb_get_mdio,
 675                 .set_mdc        = sh_eth_bb_set_mdc,
 676                 .delay          = sh_eth_bb_delay,
 677         }
 678 };
 679
 680 int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses);