drivers/net/pic32_eth.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (c) 2015 Purna Chandra Mandal <purna.mandal@microchip.com>
   4  *
   5  */
   6 #include <common.h>
   7 #include <errno.h>
   8 #include <dm.h>
   9 #include <net.h>
  10 #include <miiphy.h>
  11 #include <console.h>
  12 #include <wait_bit.h>
  13 #include <asm/gpio.h>
  14
  15 #include "pic32_eth.h"
  16
  17 #define MAX_RX_BUF_SIZE         1536
  18 #define MAX_RX_DESCR            PKTBUFSRX
  19 #define MAX_TX_DESCR            2
  20
  21 DECLARE_GLOBAL_DATA_PTR;
  22
  23 struct pic32eth_dev {
  24         struct eth_dma_desc rxd_ring[MAX_RX_DESCR];
  25         struct eth_dma_desc txd_ring[MAX_TX_DESCR];
  26         u32 rxd_idx; /* index of RX desc to read */
  27         /* regs */
  28         struct pic32_ectl_regs *ectl_regs;
  29         struct pic32_emac_regs *emac_regs;
  30         /* Phy */
  31         struct phy_device *phydev;
  32         phy_interface_t phyif;
  33         u32 phy_addr;
  34         struct gpio_desc rst_gpio;
  35 };
  36
  37 void __weak board_netphy_reset(void *dev)
  38 {
  39         struct pic32eth_dev *priv = dev;
  40
  41         if (!dm_gpio_is_valid(&priv->rst_gpio))
  42                 return;
  43
  44         /* phy reset */
  45         dm_gpio_set_value(&priv->rst_gpio, 0);
  46         udelay(300);
  47         dm_gpio_set_value(&priv->rst_gpio, 1);
  48         udelay(300);
  49 }
  50
  51 /* Initialize mii(MDIO) interface, discover which PHY is
  52  * attached to the device, and configure it properly.
  53  */
  54 static int pic32_mii_init(struct pic32eth_dev *priv)
  55 {
  56         struct pic32_ectl_regs *ectl_p = priv->ectl_regs;
  57         struct pic32_emac_regs *emac_p = priv->emac_regs;
  58
  59         /* board phy reset */
  60         board_netphy_reset(priv);
  61
  62         /* disable RX, TX & all transactions */
  63         writel(ETHCON_ON | ETHCON_TXRTS | ETHCON_RXEN, &ectl_p->con1.clr);
  64
  65         /* wait till busy */
  66         wait_for_bit_le32(&ectl_p->stat.raw, ETHSTAT_BUSY, false,
  67                           CONFIG_SYS_HZ, false);
  68
  69         /* turn controller ON to access PHY over MII */
  70         writel(ETHCON_ON, &ectl_p->con1.set);
  71
  72         mdelay(10);
  73
  74         /* reset MAC */
  75         writel(EMAC_SOFTRESET, &emac_p->cfg1.set); /* reset assert */
  76         mdelay(10);
  77         writel(EMAC_SOFTRESET, &emac_p->cfg1.clr); /* reset deassert */
  78
  79         /* initialize MDIO/MII */
  80         if (priv->phyif == PHY_INTERFACE_MODE_RMII) {
  81                 writel(EMAC_RMII_RESET, &emac_p->supp.set);
  82                 mdelay(10);
  83                 writel(EMAC_RMII_RESET, &emac_p->supp.clr);
  84         }
  85
  86         return pic32_mdio_init(PIC32_MDIO_NAME, (ulong)&emac_p->mii);
  87 }
  88
  89 static int pic32_phy_init(struct pic32eth_dev *priv, struct udevice *dev)
  90 {
  91         struct mii_dev *mii;
  92
  93         mii = miiphy_get_dev_by_name(PIC32_MDIO_NAME);
  94
  95         /* find & connect PHY */
  96         priv->phydev = phy_connect(mii, priv->phy_addr,
  97                                    dev, priv->phyif);
  98         if (!priv->phydev) {
  99                 printf("%s: %s: Error, PHY connect\n", __FILE__, __func__);
 100                 return 0;
 101         }
 102
 103         /* Wait for phy to complete reset */
 104         mdelay(10);
 105
 106         /* configure supported modes */
 107         priv->phydev->supported = SUPPORTED_10baseT_Half |
 108                                   SUPPORTED_10baseT_Full |
 109                                   SUPPORTED_100baseT_Half |
 110                                   SUPPORTED_100baseT_Full |
 111                                   SUPPORTED_Autoneg;
 112
 113         priv->phydev->advertising = ADVERTISED_10baseT_Half |
 114                                     ADVERTISED_10baseT_Full |
 115                                     ADVERTISED_100baseT_Half |
 116                                     ADVERTISED_100baseT_Full |
 117                                     ADVERTISED_Autoneg;
 118
 119         priv->phydev->autoneg = AUTONEG_ENABLE;
 120
 121         return 0;
 122 }
 123
 124 /* Configure MAC based on negotiated speed and duplex
 125  * reported by PHY.
 126  */
 127 static int pic32_mac_adjust_link(struct pic32eth_dev *priv)
 128 {
 129         struct phy_device *phydev = priv->phydev;
 130         struct pic32_emac_regs *emac_p = priv->emac_regs;
 131
 132         if (!phydev->link) {
 133                 printf("%s: No link.\n", phydev->dev->name);
 134                 return -EINVAL;
 135         }
 136
 137         if (phydev->duplex) {
 138                 writel(EMAC_FULLDUP, &emac_p->cfg2.set);
 139                 writel(FULLDUP_GAP_TIME, &emac_p->ipgt.raw);
 140         } else {
 141                 writel(EMAC_FULLDUP, &emac_p->cfg2.clr);
 142                 writel(HALFDUP_GAP_TIME, &emac_p->ipgt.raw);
 143         }
 144
 145         switch (phydev->speed) {
 146         case SPEED_100:
 147                 writel(EMAC_RMII_SPD100, &emac_p->supp.set);
 148                 break;
 149         case SPEED_10:
 150                 writel(EMAC_RMII_SPD100, &emac_p->supp.clr);
 151                 break;
 152         default:
 153                 printf("%s: Speed was bad\n", phydev->dev->name);
 154                 return -EINVAL;
 155         }
 156
 157         printf("pic32eth: PHY is %s with %dbase%s, %s\n",
 158                phydev->drv->name, phydev->speed,
 159                (phydev->port == PORT_TP) ? "T" : "X",
 160                (phydev->duplex) ? "full" : "half");
 161
 162         return 0;
 163 }
 164
 165 static void pic32_mac_init(struct pic32eth_dev *priv, u8 *macaddr)
 166 {
 167         struct pic32_emac_regs *emac_p = priv->emac_regs;
 168         u32 stat = 0, v;
 169         u64 expire;
 170
 171         v = EMAC_TXPAUSE | EMAC_RXPAUSE | EMAC_RXENABLE;
 172         writel(v, &emac_p->cfg1.raw);
 173
 174         v = EMAC_EXCESS | EMAC_AUTOPAD | EMAC_PADENABLE |
 175             EMAC_CRCENABLE | EMAC_LENGTHCK | EMAC_FULLDUP;
 176         writel(v, &emac_p->cfg2.raw);
 177
 178         /* recommended back-to-back inter-packet gap for 10 Mbps half duplex */
 179         writel(HALFDUP_GAP_TIME, &emac_p->ipgt.raw);
 180
 181         /* recommended non-back-to-back interpacket gap is 0xc12 */
 182         writel(0xc12, &emac_p->ipgr.raw);
 183
 184         /* recommended collision window retry limit is 0x370F */
 185         writel(0x370f, &emac_p->clrt.raw);
 186
 187         /* set maximum frame length: allow VLAN tagged frame */
 188         writel(0x600, &emac_p->maxf.raw);
 189
 190         /* set the mac address */
 191         writel(macaddr[0] | (macaddr[1] << 8), &emac_p->sa2.raw);
 192         writel(macaddr[2] | (macaddr[3] << 8), &emac_p->sa1.raw);
 193         writel(macaddr[4] | (macaddr[5] << 8), &emac_p->sa0.raw);
 194
 195         /* default, enable 10 Mbps operation */
 196         writel(EMAC_RMII_SPD100, &emac_p->supp.clr);
 197
 198         /* wait until link status UP or deadline elapsed */
 199         expire = get_ticks() + get_tbclk() * 2;
 200         for (; get_ticks() < expire;) {
 201                 stat = phy_read(priv->phydev, priv->phy_addr, MII_BMSR);
 202                 if (stat & BMSR_LSTATUS)
 203                         break;
 204         }
 205
 206         if (!(stat & BMSR_LSTATUS))
 207                 printf("MAC: Link is DOWN!\n");
 208
 209         /* delay to stabilize before any tx/rx */
 210         mdelay(10);
 211 }
 212
 213 static void pic32_mac_reset(struct pic32eth_dev *priv)
 214 {
 215         struct pic32_emac_regs *emac_p = priv->emac_regs;
 216         struct mii_dev *mii;
 217
 218         /* Reset MAC */
 219         writel(EMAC_SOFTRESET, &emac_p->cfg1.raw);
 220         mdelay(10);
 221
 222         /* clear reset */
 223         writel(0, &emac_p->cfg1.raw);
 224
 225         /* Reset MII */
 226         mii = priv->phydev->bus;
 227         if (mii && mii->reset)
 228                 mii->reset(mii);
 229 }
 230
 231 /* initializes the MAC and PHY, then establishes a link */
 232 static void pic32_ctrl_reset(struct pic32eth_dev *priv)
 233 {
 234         struct pic32_ectl_regs *ectl_p = priv->ectl_regs;
 235         u32 v;
 236
 237         /* disable RX, TX & any other transactions */
 238         writel(ETHCON_ON | ETHCON_TXRTS | ETHCON_RXEN, &ectl_p->con1.clr);
 239
 240         /* wait till busy */
 241         wait_for_bit_le32(&ectl_p->stat.raw, ETHSTAT_BUSY, false,
 242                           CONFIG_SYS_HZ, false);
 243         /* decrement received buffcnt to zero. */
 244         while (readl(&ectl_p->stat.raw) & ETHSTAT_BUFCNT)
 245                 writel(ETHCON_BUFCDEC, &ectl_p->con1.set);
 246
 247         /* clear any existing interrupt event */
 248         writel(0xffffffff, &ectl_p->irq.clr);
 249
 250         /* clear RX/TX start address */
 251         writel(0xffffffff, &ectl_p->txst.clr);
 252         writel(0xffffffff, &ectl_p->rxst.clr);
 253
 254         /* clear the receive filters */
 255         writel(0x00ff, &ectl_p->rxfc.clr);
 256
 257         /* set the receive filters
 258          * ETH_FILT_CRC_ERR_REJECT
 259          * ETH_FILT_RUNT_REJECT
 260          * ETH_FILT_UCAST_ACCEPT
 261          * ETH_FILT_MCAST_ACCEPT
 262          * ETH_FILT_BCAST_ACCEPT
 263          */
 264         v = ETHRXFC_BCEN | ETHRXFC_MCEN | ETHRXFC_UCEN |
 265             ETHRXFC_RUNTEN | ETHRXFC_CRCOKEN;
 266         writel(v, &ectl_p->rxfc.set);
 267
 268         /* turn controller ON to access PHY over MII */
 269         writel(ETHCON_ON, &ectl_p->con1.set);
 270 }
 271
 272 static void pic32_rx_desc_init(struct pic32eth_dev *priv)
 273 {
 274         struct pic32_ectl_regs *ectl_p = priv->ectl_regs;
 275         struct eth_dma_desc *rxd;
 276         u32 idx, bufsz;
 277
 278         priv->rxd_idx = 0;
 279         for (idx = 0; idx < MAX_RX_DESCR; idx++) {
 280                 rxd = &priv->rxd_ring[idx];
 281
 282                 /* hw owned */
 283                 rxd->hdr = EDH_NPV | EDH_EOWN | EDH_STICKY;
 284
 285                 /* packet buffer address */
 286                 rxd->data_buff = virt_to_phys(net_rx_packets[idx]);
 287
 288                 /* link to next desc */
 289                 rxd->next_ed = virt_to_phys(rxd + 1);
 290
 291                 /* reset status */
 292                 rxd->stat1 = 0;
 293                 rxd->stat2 = 0;
 294
 295                 /* decrement bufcnt */
 296                 writel(ETHCON_BUFCDEC, &ectl_p->con1.set);
 297         }
 298
 299         /* link last descr to beginning of list */
 300         rxd->next_ed = virt_to_phys(&priv->rxd_ring[0]);
 301
 302         /* flush rx ring */
 303         flush_dcache_range((ulong)priv->rxd_ring,
 304                            (ulong)priv->rxd_ring + sizeof(priv->rxd_ring));
 305
 306         /* set rx desc-ring start address */
 307         writel((ulong)virt_to_phys(&priv->rxd_ring[0]), &ectl_p->rxst.raw);
 308
 309         /* RX Buffer size */
 310         bufsz = readl(&ectl_p->con2.raw);
 311         bufsz &= ~(ETHCON_RXBUFSZ << ETHCON_RXBUFSZ_SHFT);
 312         bufsz |= ((MAX_RX_BUF_SIZE / 16) << ETHCON_RXBUFSZ_SHFT);
 313         writel(bufsz, &ectl_p->con2.raw);
 314
 315         /* enable the receiver in hardware which allows hardware
 316          * to DMA received pkts to the descriptor pointer address.
 317          */
 318         writel(ETHCON_RXEN, &ectl_p->con1.set);
 319 }
 320
 321 static int pic32_eth_start(struct udevice *dev)
 322 {
 323         struct eth_pdata *pdata = dev_get_platdata(dev);
 324         struct pic32eth_dev *priv = dev_get_priv(dev);
 325
 326         /* controller */
 327         pic32_ctrl_reset(priv);
 328
 329         /* reset MAC */
 330         pic32_mac_reset(priv);
 331
 332         /* configure PHY */
 333         phy_config(priv->phydev);
 334
 335         /* initialize MAC */
 336         pic32_mac_init(priv, &pdata->enetaddr[0]);
 337
 338         /* init RX descriptor; TX descriptors are handled in xmit */
 339         pic32_rx_desc_init(priv);
 340
 341         /* Start up & update link status of PHY */
 342         phy_startup(priv->phydev);
 343
 344         /* adjust mac with phy link status */
 345         return pic32_mac_adjust_link(priv);
 346 }
 347
 348 static void pic32_eth_stop(struct udevice *dev)
 349 {
 350         struct pic32eth_dev *priv = dev_get_priv(dev);
 351         struct pic32_ectl_regs *ectl_p = priv->ectl_regs;
 352         struct pic32_emac_regs *emac_p = priv->emac_regs;
 353
 354         /* Reset the phy if the controller is enabled */
 355         if (readl(&ectl_p->con1.raw) & ETHCON_ON)
 356                 phy_reset(priv->phydev);
 357
 358         /* Shut down the PHY */
 359         phy_shutdown(priv->phydev);
 360
 361         /* Stop rx/tx */
 362         writel(ETHCON_TXRTS | ETHCON_RXEN, &ectl_p->con1.clr);
 363         mdelay(10);
 364
 365         /* reset MAC */
 366         writel(EMAC_SOFTRESET, &emac_p->cfg1.raw);
 367
 368         /* clear reset */
 369         writel(0, &emac_p->cfg1.raw);
 370         mdelay(10);
 371
 372         /* disable controller */
 373         writel(ETHCON_ON, &ectl_p->con1.clr);
 374         mdelay(10);
 375
 376         /* wait until everything is down */
 377         wait_for_bit_le32(&ectl_p->stat.raw, ETHSTAT_BUSY, false,
 378                           2 * CONFIG_SYS_HZ, false);
 379
 380         /* clear any existing interrupt event */
 381         writel(0xffffffff, &ectl_p->irq.clr);
 382 }
 383
 384 static int pic32_eth_send(struct udevice *dev, void *packet, int length)
 385 {
 386         struct pic32eth_dev *priv = dev_get_priv(dev);
 387         struct pic32_ectl_regs *ectl_p = priv->ectl_regs;
 388         struct eth_dma_desc *txd;
 389         u64 deadline;
 390
 391         txd = &priv->txd_ring[0];
 392
 393         /* set proper flags & length in descriptor header */
 394         txd->hdr = EDH_SOP | EDH_EOP | EDH_EOWN | EDH_BCOUNT(length);
 395
 396         /* pass buffer address to hardware */
 397         txd->data_buff = virt_to_phys(packet);
 398
 399         debug("%s: %d / .hdr %x, .data_buff %x, .stat %x, .nexted %x\n",
 400               __func__, __LINE__, txd->hdr, txd->data_buff, txd->stat2,
 401               txd->next_ed);
 402
 403         /* cache flush (packet) */
 404         flush_dcache_range((ulong)packet, (ulong)packet + length);
 405
 406         /* cache flush (txd) */
 407         flush_dcache_range((ulong)txd, (ulong)txd + sizeof(*txd));
 408
 409         /* pass descriptor table base to h/w */
 410         writel(virt_to_phys(txd), &ectl_p->txst.raw);
 411
 412         /* ready to send enabled, hardware can now send the packet(s) */
 413         writel(ETHCON_TXRTS | ETHCON_ON, &ectl_p->con1.set);
 414
 415         /* wait until tx has completed and h/w has released ownership
 416          * of the tx descriptor or timeout elapsed.
 417          */
 418         deadline = get_ticks() + get_tbclk();
 419         for (;;) {
 420                 /* check timeout */
 421                 if (get_ticks() > deadline)
 422                         return -ETIMEDOUT;
 423
 424                 if (ctrlc())
 425                         return -EINTR;
 426
 427                 /* tx completed ? */
 428                 if (readl(&ectl_p->con1.raw) & ETHCON_TXRTS) {
 429                         udelay(1);
 430                         continue;
 431                 }
 432
 433                 /* h/w not released ownership yet? */
 434                 invalidate_dcache_range((ulong)txd, (ulong)txd + sizeof(*txd));
 435                 if (!(txd->hdr & EDH_EOWN))
 436                         break;
 437         }
 438
 439         return 0;
 440 }
 441
 442 static int pic32_eth_recv(struct udevice *dev, int flags, uchar **packetp)
 443 {
 444         struct pic32eth_dev *priv = dev_get_priv(dev);
 445         struct eth_dma_desc *rxd;
 446         u32 idx = priv->rxd_idx;
 447         u32 rx_count;
 448
 449         /* find the next ready to receive */
 450         rxd = &priv->rxd_ring[idx];
 451
 452         invalidate_dcache_range((ulong)rxd, (ulong)rxd + sizeof(*rxd));
 453         /* check if owned by MAC */
 454         if (rxd->hdr & EDH_EOWN)
 455                 return -EAGAIN;
 456
 457         /* Sanity check on header: SOP and EOP  */
 458         if ((rxd->hdr & (EDH_SOP | EDH_EOP)) != (EDH_SOP | EDH_EOP)) {
 459                 printf("%s: %s, rx pkt across multiple descr\n",
 460                        __FILE__, __func__);
 461                 return 0;
 462         }
 463
 464         debug("%s: %d /idx %i, hdr=%x, data_buff %x, stat %x, nexted %x\n",
 465               __func__, __LINE__, idx, rxd->hdr,
 466               rxd->data_buff, rxd->stat2, rxd->next_ed);
 467
 468         /* Sanity check on rx_stat: OK, CRC */
 469         if (!RSV_RX_OK(rxd->stat2) || RSV_CRC_ERR(rxd->stat2)) {
 470                 debug("%s: %s: Error, rx problem detected\n",
 471                       __FILE__, __func__);
 472                 return 0;
 473         }
 474
 475         /* invalidate dcache */
 476         rx_count = RSV_RX_COUNT(rxd->stat2);
 477         invalidate_dcache_range((ulong)net_rx_packets[idx],
 478                                 (ulong)net_rx_packets[idx] + rx_count);
 479
 480         /* Pass the packet to protocol layer */
 481         *packetp = net_rx_packets[idx];
 482
 483         /* increment number of bytes rcvd (ignore CRC) */
 484         return rx_count - 4;
 485 }
 486
 487 static int pic32_eth_free_pkt(struct udevice *dev, uchar *packet, int length)
 488 {
 489         struct pic32eth_dev *priv = dev_get_priv(dev);
 490         struct pic32_ectl_regs *ectl_p = priv->ectl_regs;
 491         struct eth_dma_desc *rxd;
 492         int idx = priv->rxd_idx;
 493
 494         /* sanity check */
 495         if (packet != net_rx_packets[idx]) {
 496                 printf("rxd_id %d: packet is not matched,\n", idx);
 497                 return -EAGAIN;
 498         }
 499
 500         /* prepare for receive */
 501         rxd = &priv->rxd_ring[idx];
 502         rxd->hdr = EDH_STICKY | EDH_NPV | EDH_EOWN;
 503
 504         flush_dcache_range((ulong)rxd, (ulong)rxd + sizeof(*rxd));
 505
 506         /* decrement rx pkt count */
 507         writel(ETHCON_BUFCDEC, &ectl_p->con1.set);
 508
 509         debug("%s: %d / idx %i, hdr %x, data_buff %x, stat %x, nexted %x\n",
 510               __func__, __LINE__, idx, rxd->hdr, rxd->data_buff,
 511               rxd->stat2, rxd->next_ed);
 512
 513         priv->rxd_idx = (priv->rxd_idx + 1) % MAX_RX_DESCR;
 514
 515         return 0;
 516 }
 517
 518 static const struct eth_ops pic32_eth_ops = {
 519         .start          = pic32_eth_start,
 520         .send           = pic32_eth_send,
 521         .recv           = pic32_eth_recv,
 522         .free_pkt       = pic32_eth_free_pkt,
 523         .stop           = pic32_eth_stop,
 524 };
 525
 526 static int pic32_eth_probe(struct udevice *dev)
 527 {
 528         struct eth_pdata *pdata = dev_get_platdata(dev);
 529         struct pic32eth_dev *priv = dev_get_priv(dev);
 530         const char *phy_mode;
 531         void __iomem *iobase;
 532         fdt_addr_t addr;
 533         fdt_size_t size;
 534         int offset = 0;
 535         int phy_addr = -1;
 536
 537         addr = fdtdec_get_addr_size(gd->fdt_blob, dev_of_offset(dev), "reg",
 538                                     &size);
 539         if (addr == FDT_ADDR_T_NONE)
 540                 return -EINVAL;
 541
 542         iobase = ioremap(addr, size);
 543         pdata->iobase = (phys_addr_t)addr;
 544
 545         /* get phy mode */
 546         pdata->phy_interface = -1;
 547         phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
 548                                NULL);
 549         if (phy_mode)
 550                 pdata->phy_interface = phy_get_interface_by_name(phy_mode);
 551         if (pdata->phy_interface == -1) {
 552                 debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
 553                 return -EINVAL;
 554         }
 555
 556         /* get phy addr */
 557         offset = fdtdec_lookup_phandle(gd->fdt_blob, dev_of_offset(dev),
 558                                        "phy-handle");
 559         if (offset > 0)
 560                 phy_addr = fdtdec_get_int(gd->fdt_blob, offset, "reg", -1);
 561
 562         /* phy reset gpio */
 563         gpio_request_by_name_nodev(dev_ofnode(dev), "reset-gpios", 0,
 564                                    &priv->rst_gpio, GPIOD_IS_OUT);
 565
 566         priv->phyif     = pdata->phy_interface;
 567         priv->phy_addr  = phy_addr;
 568         priv->ectl_regs = iobase;
 569         priv->emac_regs = iobase + PIC32_EMAC1CFG1;
 570
 571         pic32_mii_init(priv);
 572
 573         return pic32_phy_init(priv, dev);
 574 }
 575
 576 static int pic32_eth_remove(struct udevice *dev)
 577 {
 578         struct pic32eth_dev *priv = dev_get_priv(dev);
 579         struct mii_dev *bus;
 580
 581         dm_gpio_free(dev, &priv->rst_gpio);
 582         phy_shutdown(priv->phydev);
 583         free(priv->phydev);
 584         bus = miiphy_get_dev_by_name(PIC32_MDIO_NAME);
 585         mdio_unregister(bus);
 586         mdio_free(bus);
 587         iounmap(priv->ectl_regs);
 588         return 0;
 589 }
 590
 591 static const struct udevice_id pic32_eth_ids[] = {
 592         { .compatible = "microchip,pic32mzda-eth" },
 593         { }
 594 };
 595
 596 U_BOOT_DRIVER(pic32_ethernet) = {
 597         .name                   = "pic32_ethernet",
 598         .id                     = UCLASS_ETH,
 599         .of_match               = pic32_eth_ids,
 600         .probe                  = pic32_eth_probe,
 601         .remove                 = pic32_eth_remove,
 602         .ops                    = &pic32_eth_ops,
 603         .priv_auto_alloc_size   = sizeof(struct pic32eth_dev),
 604         .platdata_auto_alloc_size       = sizeof(struct eth_pdata),
 605 };