drivers/net/pic32_eth.c

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