LXR uboot/drivers/net/sh

   1/*
   2 * sh_eth.c - Driver for Renesas ethernet controler.
   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 <asm/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
  56int 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 alligned\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
 110err:
 111        return ret;
 112}
 113
 114int 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                        NetReceive(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
 156static 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
 187static 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        /* Point the controller to the tx descriptor list. Must use physical
 226           addresses */
 227        sh_eth_write(eth, ADDR_TO_PHY(port_info->tx_desc_base), TDLAR);
 228#if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 229        sh_eth_write(eth, ADDR_TO_PHY(port_info->tx_desc_base), TDFAR);
 230        sh_eth_write(eth, ADDR_TO_PHY(cur_tx_desc), TDFXR);
 231        sh_eth_write(eth, 0x01, TDFFR);/* Last discriptor bit */
 232#endif
 233
 234err:
 235        return ret;
 236}
 237
 238static int sh_eth_rx_desc_init(struct sh_eth_dev *eth)
 239{
 240        int port = eth->port, i , ret = 0;
 241        u32 alloc_desc_size = NUM_RX_DESC * sizeof(struct rx_desc_s);
 242        struct sh_eth_info *port_info = &eth->port_info[port];
 243        struct rx_desc_s *cur_rx_desc;
 244        u8 *rx_buf;
 245
 246        /*
 247         * Allocate rx descriptors. They must be aligned to size of struct
 248         * rx_desc_s.
 249         */
 250        port_info->rx_desc_alloc =
 251                memalign(sizeof(struct rx_desc_s), alloc_desc_size);
 252        if (!port_info->rx_desc_alloc) {
 253                printf(SHETHER_NAME ": memalign failed\n");
 254                ret = -ENOMEM;
 255                goto err;
 256        }
 257
 258        flush_cache_wback(port_info->rx_desc_alloc, alloc_desc_size);
 259
 260        /* Make sure we use a P2 address (non-cacheable) */
 261        port_info->rx_desc_base =
 262                (struct rx_desc_s *)ADDR_TO_P2((u32)port_info->rx_desc_alloc);
 263
 264        port_info->rx_desc_cur = port_info->rx_desc_base;
 265
 266        /*
 267         * Allocate rx data buffers. They must be RX_BUF_ALIGNE_SIZE bytes
 268         * aligned and in P2 area.
 269         */
 270        port_info->rx_buf_alloc =
 271                memalign(RX_BUF_ALIGNE_SIZE, NUM_RX_DESC * MAX_BUF_SIZE);
 272        if (!port_info->rx_buf_alloc) {
 273                printf(SHETHER_NAME ": alloc failed\n");
 274                ret = -ENOMEM;
 275                goto err_buf_alloc;
 276        }
 277
 278        port_info->rx_buf_base = (u8 *)ADDR_TO_P2((u32)port_info->rx_buf_alloc);
 279
 280        /* Initialize all descriptors */
 281        for (cur_rx_desc = port_info->rx_desc_base,
 282             rx_buf = port_info->rx_buf_base, i = 0;
 283             i < NUM_RX_DESC; cur_rx_desc++, rx_buf += MAX_BUF_SIZE, i++) {
 284                cur_rx_desc->rd0 = RD_RACT;
 285                cur_rx_desc->rd1 = MAX_BUF_SIZE << 16;
 286                cur_rx_desc->rd2 = (u32) ADDR_TO_PHY(rx_buf);
 287        }
 288
 289        /* Mark the end of the descriptors */
 290        cur_rx_desc--;
 291        cur_rx_desc->rd0 |= RD_RDLE;
 292
 293        /* Point the controller to the rx descriptor list */
 294        sh_eth_write(eth, ADDR_TO_PHY(port_info->rx_desc_base), RDLAR);
 295#if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 296        sh_eth_write(eth, ADDR_TO_PHY(port_info->rx_desc_base), RDFAR);
 297        sh_eth_write(eth, ADDR_TO_PHY(cur_rx_desc), RDFXR);
 298        sh_eth_write(eth, RDFFR_RDLF, RDFFR);
 299#endif
 300
 301        return ret;
 302
 303err_buf_alloc:
 304        free(port_info->rx_desc_alloc);
 305        port_info->rx_desc_alloc = NULL;
 306
 307err:
 308        return ret;
 309}
 310
 311static void sh_eth_tx_desc_free(struct sh_eth_dev *eth)
 312{
 313        int port = eth->port;
 314        struct sh_eth_info *port_info = &eth->port_info[port];
 315
 316        if (port_info->tx_desc_alloc) {
 317                free(port_info->tx_desc_alloc);
 318                port_info->tx_desc_alloc = NULL;
 319        }
 320}
 321
 322static void sh_eth_rx_desc_free(struct sh_eth_dev *eth)
 323{
 324        int port = eth->port;
 325        struct sh_eth_info *port_info = &eth->port_info[port];
 326
 327        if (port_info->rx_desc_alloc) {
 328                free(port_info->rx_desc_alloc);
 329                port_info->rx_desc_alloc = NULL;
 330        }
 331
 332        if (port_info->rx_buf_alloc) {
 333                free(port_info->rx_buf_alloc);
 334                port_info->rx_buf_alloc = NULL;
 335        }
 336}
 337
 338static int sh_eth_desc_init(struct sh_eth_dev *eth)
 339{
 340        int ret = 0;
 341
 342        ret = sh_eth_tx_desc_init(eth);
 343        if (ret)
 344                goto err_tx_init;
 345
 346        ret = sh_eth_rx_desc_init(eth);
 347        if (ret)
 348                goto err_rx_init;
 349
 350        return ret;
 351err_rx_init:
 352        sh_eth_tx_desc_free(eth);
 353
 354err_tx_init:
 355        return ret;
 356}
 357
 358static int sh_eth_phy_config(struct sh_eth_dev *eth)
 359{
 360        int port = eth->port, ret = 0;
 361        struct sh_eth_info *port_info = &eth->port_info[port];
 362        struct eth_device *dev = port_info->dev;
 363        struct phy_device *phydev;
 364
 365        phydev = phy_connect(
 366                        miiphy_get_dev_by_name(dev->name),
 367                        port_info->phy_addr, dev, CONFIG_SH_ETHER_PHY_MODE);
 368        port_info->phydev = phydev;
 369        phy_config(phydev);
 370
 371        return ret;
 372}
 373
 374static int sh_eth_config(struct sh_eth_dev *eth, bd_t *bd)
 375{
 376        int port = eth->port, ret = 0;
 377        u32 val;
 378        struct sh_eth_info *port_info = &eth->port_info[port];
 379        struct eth_device *dev = port_info->dev;
 380        struct phy_device *phy;
 381
 382        /* Configure e-dmac registers */
 383        sh_eth_write(eth, (sh_eth_read(eth, EDMR) & ~EMDR_DESC_R) |
 384                        (EMDR_DESC | EDMR_EL), EDMR);
 385
 386        sh_eth_write(eth, 0, EESIPR);
 387        sh_eth_write(eth, 0, TRSCER);
 388        sh_eth_write(eth, 0, TFTR);
 389        sh_eth_write(eth, (FIFO_SIZE_T | FIFO_SIZE_R), FDR);
 390        sh_eth_write(eth, RMCR_RST, RMCR);
 391#if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 392        sh_eth_write(eth, 0, RPADIR);
 393#endif
 394        sh_eth_write(eth, (FIFO_F_D_RFF | FIFO_F_D_RFD), FCFTR);
 395
 396        /* Configure e-mac registers */
 397        sh_eth_write(eth, 0, ECSIPR);
 398
 399        /* Set Mac address */
 400        val = dev->enetaddr[0] << 24 | dev->enetaddr[1] << 16 |
 401            dev->enetaddr[2] << 8 | dev->enetaddr[3];
 402        sh_eth_write(eth, val, MAHR);
 403
 404        val = dev->enetaddr[4] << 8 | dev->enetaddr[5];
 405        sh_eth_write(eth, val, MALR);
 406
 407        sh_eth_write(eth, RFLR_RFL_MIN, RFLR);
 408#if defined(SH_ETH_TYPE_GETHER)
 409        sh_eth_write(eth, 0, PIPR);
 410#endif
 411#if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 412        sh_eth_write(eth, APR_AP, APR);
 413        sh_eth_write(eth, MPR_MP, MPR);
 414        sh_eth_write(eth, TPAUSER_TPAUSE, TPAUSER);
 415#endif
 416
 417#if defined(CONFIG_CPU_SH7734) || defined(CONFIG_R8A7740)
 418        sh_eth_write(eth, CONFIG_SH_ETHER_SH7734_MII, RMII_MII);
 419#elif defined(CONFIG_R8A7790) || defined(CONFIG_R8A7791) || \
 420        defined(CONFIG_R8A7793) || defined(CONFIG_R8A7794)
 421        sh_eth_write(eth, sh_eth_read(eth, RMIIMR) | 0x1, RMIIMR);
 422#endif
 423        /* Configure phy */
 424        ret = sh_eth_phy_config(eth);
 425        if (ret) {
 426                printf(SHETHER_NAME ": phy config timeout\n");
 427                goto err_phy_cfg;
 428        }
 429        phy = port_info->phydev;
 430        ret = phy_startup(phy);
 431        if (ret) {
 432                printf(SHETHER_NAME ": phy startup failure\n");
 433                return ret;
 434        }
 435
 436        val = 0;
 437
 438        /* Set the transfer speed */
 439        if (phy->speed == 100) {
 440                printf(SHETHER_NAME ": 100Base/");
 441#if defined(SH_ETH_TYPE_GETHER)
 442                sh_eth_write(eth, GECMR_100B, GECMR);
 443#elif defined(CONFIG_CPU_SH7757) || defined(CONFIG_CPU_SH7752)
 444                sh_eth_write(eth, 1, RTRATE);
 445#elif defined(CONFIG_CPU_SH7724) || defined(CONFIG_R8A7790) || \
 446                defined(CONFIG_R8A7791) || defined(CONFIG_R8A7793) || \
 447                defined(CONFIG_R8A7794)
 448                val = ECMR_RTM;
 449#endif
 450        } else if (phy->speed == 10) {
 451                printf(SHETHER_NAME ": 10Base/");
 452#if defined(SH_ETH_TYPE_GETHER)
 453                sh_eth_write(eth, GECMR_10B, GECMR);
 454#elif defined(CONFIG_CPU_SH7757) || defined(CONFIG_CPU_SH7752)
 455                sh_eth_write(eth, 0, RTRATE);
 456#endif
 457        }
 458#if defined(SH_ETH_TYPE_GETHER)
 459        else if (phy->speed == 1000) {
 460                printf(SHETHER_NAME ": 1000Base/");
 461                sh_eth_write(eth, GECMR_1000B, GECMR);
 462        }
 463#endif
 464
 465        /* Check if full duplex mode is supported by the phy */
 466        if (phy->duplex) {
 467                printf("Full\n");
 468                sh_eth_write(eth, val | (ECMR_CHG_DM|ECMR_RE|ECMR_TE|ECMR_DM),
 469                             ECMR);
 470        } else {
 471                printf("Half\n");
 472                sh_eth_write(eth, val | (ECMR_CHG_DM|ECMR_RE|ECMR_TE), ECMR);
 473        }
 474
 475        return ret;
 476
 477err_phy_cfg:
 478        return ret;
 479}
 480
 481static void sh_eth_start(struct sh_eth_dev *eth)
 482{
 483        /*
 484         * Enable the e-dmac receiver only. The transmitter will be enabled when
 485         * we have something to transmit
 486         */
 487        sh_eth_write(eth, EDRRR_R, EDRRR);
 488}
 489
 490static void sh_eth_stop(struct sh_eth_dev *eth)
 491{
 492        sh_eth_write(eth, ~EDRRR_R, EDRRR);
 493}
 494
 495int sh_eth_init(struct eth_device *dev, bd_t *bd)
 496{
 497        int ret = 0;
 498        struct sh_eth_dev *eth = dev->priv;
 499
 500        ret = sh_eth_reset(eth);
 501        if (ret)
 502                goto err;
 503
 504        ret = sh_eth_desc_init(eth);
 505        if (ret)
 506                goto err;
 507
 508        ret = sh_eth_config(eth, bd);
 509        if (ret)
 510                goto err_config;
 511
 512        sh_eth_start(eth);
 513
 514        return ret;
 515
 516err_config:
 517        sh_eth_tx_desc_free(eth);
 518        sh_eth_rx_desc_free(eth);
 519
 520err:
 521        return ret;
 522}
 523
 524void sh_eth_halt(struct eth_device *dev)
 525{
 526        struct sh_eth_dev *eth = dev->priv;
 527        sh_eth_stop(eth);
 528}
 529
 530int sh_eth_initialize(bd_t *bd)
 531{
 532        int ret = 0;
 533        struct sh_eth_dev *eth = NULL;
 534        struct eth_device *dev = NULL;
 535
 536        eth = (struct sh_eth_dev *)malloc(sizeof(struct sh_eth_dev));
 537        if (!eth) {
 538                printf(SHETHER_NAME ": %s: malloc failed\n", __func__);
 539                ret = -ENOMEM;
 540                goto err;
 541        }
 542
 543        dev = (struct eth_device *)malloc(sizeof(struct eth_device));
 544        if (!dev) {
 545                printf(SHETHER_NAME ": %s: malloc failed\n", __func__);
 546                ret = -ENOMEM;
 547                goto err;
 548        }
 549        memset(dev, 0, sizeof(struct eth_device));
 550        memset(eth, 0, sizeof(struct sh_eth_dev));
 551
 552        eth->port = CONFIG_SH_ETHER_USE_PORT;
 553        eth->port_info[eth->port].phy_addr = CONFIG_SH_ETHER_PHY_ADDR;
 554
 555        dev->priv = (void *)eth;
 556        dev->iobase = 0;
 557        dev->init = sh_eth_init;
 558        dev->halt = sh_eth_halt;
 559        dev->send = sh_eth_send;
 560        dev->recv = sh_eth_recv;
 561        eth->port_info[eth->port].dev = dev;
 562
 563        sprintf(dev->name, SHETHER_NAME);
 564
 565        /* Register Device to EtherNet subsystem  */
 566        eth_register(dev);
 567
 568        bb_miiphy_buses[0].priv = eth;
 569        miiphy_register(dev->name, bb_miiphy_read, bb_miiphy_write);
 570
 571        if (!eth_getenv_enetaddr("ethaddr", dev->enetaddr))
 572                puts("Please set MAC address\n");
 573
 574        return ret;
 575
 576err:
 577        if (dev)
 578                free(dev);
 579
 580        if (eth)
 581                free(eth);
 582
 583        printf(SHETHER_NAME ": Failed\n");
 584        return ret;
 585}
 586
 587/******* for bb_miiphy *******/
 588static int sh_eth_bb_init(struct bb_miiphy_bus *bus)
 589{
 590        return 0;
 591}
 592
 593static int sh_eth_bb_mdio_active(struct bb_miiphy_bus *bus)
 594{
 595        struct sh_eth_dev *eth = bus->priv;
 596
 597        sh_eth_write(eth, sh_eth_read(eth, PIR) | PIR_MMD, PIR);
 598
 599        return 0;
 600}
 601
 602static int sh_eth_bb_mdio_tristate(struct bb_miiphy_bus *bus)
 603{
 604        struct sh_eth_dev *eth = bus->priv;
 605
 606        sh_eth_write(eth, sh_eth_read(eth, PIR) & ~PIR_MMD, PIR);
 607
 608        return 0;
 609}
 610
 611static int sh_eth_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
 612{
 613        struct sh_eth_dev *eth = bus->priv;
 614
 615        if (v)
 616                sh_eth_write(eth, sh_eth_read(eth, PIR) | PIR_MDO, PIR);
 617        else
 618                sh_eth_write(eth, sh_eth_read(eth, PIR) & ~PIR_MDO, PIR);
 619
 620        return 0;
 621}
 622
 623static int sh_eth_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
 624{
 625        struct sh_eth_dev *eth = bus->priv;
 626
 627        *v = (sh_eth_read(eth, PIR) & PIR_MDI) >> 3;
 628
 629        return 0;
 630}
 631
 632static int sh_eth_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
 633{
 634        struct sh_eth_dev *eth = bus->priv;
 635
 636        if (v)
 637                sh_eth_write(eth, sh_eth_read(eth, PIR) | PIR_MDC, PIR);
 638        else
 639                sh_eth_write(eth, sh_eth_read(eth, PIR) & ~PIR_MDC, PIR);
 640
 641        return 0;
 642}
 643
 644static int sh_eth_bb_delay(struct bb_miiphy_bus *bus)
 645{
 646        udelay(10);
 647
 648        return 0;
 649}
 650
 651struct bb_miiphy_bus bb_miiphy_buses[] = {
 652        {
 653                .name           = "sh_eth",
 654                .init           = sh_eth_bb_init,
 655                .mdio_active    = sh_eth_bb_mdio_active,
 656                .mdio_tristate  = sh_eth_bb_mdio_tristate,
 657                .set_mdio       = sh_eth_bb_set_mdio,
 658                .get_mdio       = sh_eth_bb_get_mdio,
 659                .set_mdc        = sh_eth_bb_set_mdc,
 660                .delay          = sh_eth_bb_delay,
 661        }
 662};
 663int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses);
 664