git.itanic.dy.fi Git - linux-stable/blob - drivers/net/ethernet/renesas/sh_eth.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*  SuperH Ethernet device driver
   3  *
   4  *  Copyright (C) 2014 Renesas Electronics Corporation
   5  *  Copyright (C) 2006-2012 Nobuhiro Iwamatsu
   6  *  Copyright (C) 2008-2014 Renesas Solutions Corp.
   7  *  Copyright (C) 2013-2017 Cogent Embedded, Inc.
   8  *  Copyright (C) 2014 Codethink Limited
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/kernel.h>
  13 #include <linux/spinlock.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/dma-mapping.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/delay.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/mdio-bitbang.h>
  20 #include <linux/netdevice.h>
  21 #include <linux/of.h>
  22 #include <linux/of_device.h>
  23 #include <linux/of_irq.h>
  24 #include <linux/of_net.h>
  25 #include <linux/phy.h>
  26 #include <linux/cache.h>
  27 #include <linux/io.h>
  28 #include <linux/pm_runtime.h>
  29 #include <linux/slab.h>
  30 #include <linux/ethtool.h>
  31 #include <linux/if_vlan.h>
  32 #include <linux/sh_eth.h>
  33 #include <linux/of_mdio.h>
  34
  35 #include "sh_eth.h"
  36
  37 #define SH_ETH_DEF_MSG_ENABLE \
  38                 (NETIF_MSG_LINK | \
  39                 NETIF_MSG_TIMER | \
  40                 NETIF_MSG_RX_ERR| \
  41                 NETIF_MSG_TX_ERR)
  42
  43 #define SH_ETH_OFFSET_INVALID   ((u16)~0)
  44
  45 #define SH_ETH_OFFSET_DEFAULTS                  \
  46         [0 ... SH_ETH_MAX_REGISTER_OFFSET - 1] = SH_ETH_OFFSET_INVALID
  47
  48 /* use some intentionally tricky logic here to initialize the whole struct to
  49  * 0xffff, but then override certain fields, requiring us to indicate that we
  50  * "know" that there are overrides in this structure, and we'll need to disable
  51  * that warning from W=1 builds. GCC has supported this option since 4.2.X, but
  52  * the macros available to do this only define GCC 8.
  53  */
  54 __diag_push();
  55 __diag_ignore(GCC, 8, "-Woverride-init",
  56               "logic to initialize all and then override some is OK");
  57 static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
  58         SH_ETH_OFFSET_DEFAULTS,
  59
  60         [EDSR]          = 0x0000,
  61         [EDMR]          = 0x0400,
  62         [EDTRR]         = 0x0408,
  63         [EDRRR]         = 0x0410,
  64         [EESR]          = 0x0428,
  65         [EESIPR]        = 0x0430,
  66         [TDLAR]         = 0x0010,
  67         [TDFAR]         = 0x0014,
  68         [TDFXR]         = 0x0018,
  69         [TDFFR]         = 0x001c,
  70         [RDLAR]         = 0x0030,
  71         [RDFAR]         = 0x0034,
  72         [RDFXR]         = 0x0038,
  73         [RDFFR]         = 0x003c,
  74         [TRSCER]        = 0x0438,
  75         [RMFCR]         = 0x0440,
  76         [TFTR]          = 0x0448,
  77         [FDR]           = 0x0450,
  78         [RMCR]          = 0x0458,
  79         [RPADIR]        = 0x0460,
  80         [FCFTR]         = 0x0468,
  81         [CSMR]          = 0x04E4,
  82
  83         [ECMR]          = 0x0500,
  84         [ECSR]          = 0x0510,
  85         [ECSIPR]        = 0x0518,
  86         [PIR]           = 0x0520,
  87         [PSR]           = 0x0528,
  88         [PIPR]          = 0x052c,
  89         [RFLR]          = 0x0508,
  90         [APR]           = 0x0554,
  91         [MPR]           = 0x0558,
  92         [PFTCR]         = 0x055c,
  93         [PFRCR]         = 0x0560,
  94         [TPAUSER]       = 0x0564,
  95         [GECMR]         = 0x05b0,
  96         [BCULR]         = 0x05b4,
  97         [MAHR]          = 0x05c0,
  98         [MALR]          = 0x05c8,
  99         [TROCR]         = 0x0700,
 100         [CDCR]          = 0x0708,
 101         [LCCR]          = 0x0710,
 102         [CEFCR]         = 0x0740,
 103         [FRECR]         = 0x0748,
 104         [TSFRCR]        = 0x0750,
 105         [TLFRCR]        = 0x0758,
 106         [RFCR]          = 0x0760,
 107         [CERCR]         = 0x0768,
 108         [CEECR]         = 0x0770,
 109         [MAFCR]         = 0x0778,
 110         [RMII_MII]      = 0x0790,
 111
 112         [ARSTR]         = 0x0000,
 113         [TSU_CTRST]     = 0x0004,
 114         [TSU_FWEN0]     = 0x0010,
 115         [TSU_FWEN1]     = 0x0014,
 116         [TSU_FCM]       = 0x0018,
 117         [TSU_BSYSL0]    = 0x0020,
 118         [TSU_BSYSL1]    = 0x0024,
 119         [TSU_PRISL0]    = 0x0028,
 120         [TSU_PRISL1]    = 0x002c,
 121         [TSU_FWSL0]     = 0x0030,
 122         [TSU_FWSL1]     = 0x0034,
 123         [TSU_FWSLC]     = 0x0038,
 124         [TSU_QTAGM0]    = 0x0040,
 125         [TSU_QTAGM1]    = 0x0044,
 126         [TSU_FWSR]      = 0x0050,
 127         [TSU_FWINMK]    = 0x0054,
 128         [TSU_ADQT0]     = 0x0048,
 129         [TSU_ADQT1]     = 0x004c,
 130         [TSU_VTAG0]     = 0x0058,
 131         [TSU_VTAG1]     = 0x005c,
 132         [TSU_ADSBSY]    = 0x0060,
 133         [TSU_TEN]       = 0x0064,
 134         [TSU_POST1]     = 0x0070,
 135         [TSU_POST2]     = 0x0074,
 136         [TSU_POST3]     = 0x0078,
 137         [TSU_POST4]     = 0x007c,
 138         [TSU_ADRH0]     = 0x0100,
 139
 140         [TXNLCR0]       = 0x0080,
 141         [TXALCR0]       = 0x0084,
 142         [RXNLCR0]       = 0x0088,
 143         [RXALCR0]       = 0x008c,
 144         [FWNLCR0]       = 0x0090,
 145         [FWALCR0]       = 0x0094,
 146         [TXNLCR1]       = 0x00a0,
 147         [TXALCR1]       = 0x00a4,
 148         [RXNLCR1]       = 0x00a8,
 149         [RXALCR1]       = 0x00ac,
 150         [FWNLCR1]       = 0x00b0,
 151         [FWALCR1]       = 0x00b4,
 152 };
 153
 154 static const u16 sh_eth_offset_fast_rcar[SH_ETH_MAX_REGISTER_OFFSET] = {
 155         SH_ETH_OFFSET_DEFAULTS,
 156
 157         [ECMR]          = 0x0300,
 158         [RFLR]          = 0x0308,
 159         [ECSR]          = 0x0310,
 160         [ECSIPR]        = 0x0318,
 161         [PIR]           = 0x0320,
 162         [PSR]           = 0x0328,
 163         [RDMLR]         = 0x0340,
 164         [IPGR]          = 0x0350,
 165         [APR]           = 0x0354,
 166         [MPR]           = 0x0358,
 167         [RFCF]          = 0x0360,
 168         [TPAUSER]       = 0x0364,
 169         [TPAUSECR]      = 0x0368,
 170         [MAHR]          = 0x03c0,
 171         [MALR]          = 0x03c8,
 172         [TROCR]         = 0x03d0,
 173         [CDCR]          = 0x03d4,
 174         [LCCR]          = 0x03d8,
 175         [CNDCR]         = 0x03dc,
 176         [CEFCR]         = 0x03e4,
 177         [FRECR]         = 0x03e8,
 178         [TSFRCR]        = 0x03ec,
 179         [TLFRCR]        = 0x03f0,
 180         [RFCR]          = 0x03f4,
 181         [MAFCR]         = 0x03f8,
 182
 183         [EDMR]          = 0x0200,
 184         [EDTRR]         = 0x0208,
 185         [EDRRR]         = 0x0210,
 186         [TDLAR]         = 0x0218,
 187         [RDLAR]         = 0x0220,
 188         [EESR]          = 0x0228,
 189         [EESIPR]        = 0x0230,
 190         [TRSCER]        = 0x0238,
 191         [RMFCR]         = 0x0240,
 192         [TFTR]          = 0x0248,
 193         [FDR]           = 0x0250,
 194         [RMCR]          = 0x0258,
 195         [TFUCR]         = 0x0264,
 196         [RFOCR]         = 0x0268,
 197         [RMIIMODE]      = 0x026c,
 198         [FCFTR]         = 0x0270,
 199         [TRIMD]         = 0x027c,
 200 };
 201
 202 static const u16 sh_eth_offset_fast_sh4[SH_ETH_MAX_REGISTER_OFFSET] = {
 203         SH_ETH_OFFSET_DEFAULTS,
 204
 205         [ECMR]          = 0x0100,
 206         [RFLR]          = 0x0108,
 207         [ECSR]          = 0x0110,
 208         [ECSIPR]        = 0x0118,
 209         [PIR]           = 0x0120,
 210         [PSR]           = 0x0128,
 211         [RDMLR]         = 0x0140,
 212         [IPGR]          = 0x0150,
 213         [APR]           = 0x0154,
 214         [MPR]           = 0x0158,
 215         [TPAUSER]       = 0x0164,
 216         [RFCF]          = 0x0160,
 217         [TPAUSECR]      = 0x0168,
 218         [BCFRR]         = 0x016c,
 219         [MAHR]          = 0x01c0,
 220         [MALR]          = 0x01c8,
 221         [TROCR]         = 0x01d0,
 222         [CDCR]          = 0x01d4,
 223         [LCCR]          = 0x01d8,
 224         [CNDCR]         = 0x01dc,
 225         [CEFCR]         = 0x01e4,
 226         [FRECR]         = 0x01e8,
 227         [TSFRCR]        = 0x01ec,
 228         [TLFRCR]        = 0x01f0,
 229         [RFCR]          = 0x01f4,
 230         [MAFCR]         = 0x01f8,
 231         [RTRATE]        = 0x01fc,
 232
 233         [EDMR]          = 0x0000,
 234         [EDTRR]         = 0x0008,
 235         [EDRRR]         = 0x0010,
 236         [TDLAR]         = 0x0018,
 237         [RDLAR]         = 0x0020,
 238         [EESR]          = 0x0028,
 239         [EESIPR]        = 0x0030,
 240         [TRSCER]        = 0x0038,
 241         [RMFCR]         = 0x0040,
 242         [TFTR]          = 0x0048,
 243         [FDR]           = 0x0050,
 244         [RMCR]          = 0x0058,
 245         [TFUCR]         = 0x0064,
 246         [RFOCR]         = 0x0068,
 247         [FCFTR]         = 0x0070,
 248         [RPADIR]        = 0x0078,
 249         [TRIMD]         = 0x007c,
 250         [RBWAR]         = 0x00c8,
 251         [RDFAR]         = 0x00cc,
 252         [TBRAR]         = 0x00d4,
 253         [TDFAR]         = 0x00d8,
 254 };
 255
 256 static const u16 sh_eth_offset_fast_sh3_sh2[SH_ETH_MAX_REGISTER_OFFSET] = {
 257         SH_ETH_OFFSET_DEFAULTS,
 258
 259         [EDMR]          = 0x0000,
 260         [EDTRR]         = 0x0004,
 261         [EDRRR]         = 0x0008,
 262         [TDLAR]         = 0x000c,
 263         [RDLAR]         = 0x0010,
 264         [EESR]          = 0x0014,
 265         [EESIPR]        = 0x0018,
 266         [TRSCER]        = 0x001c,
 267         [RMFCR]         = 0x0020,
 268         [TFTR]          = 0x0024,
 269         [FDR]           = 0x0028,
 270         [RMCR]          = 0x002c,
 271         [EDOCR]         = 0x0030,
 272         [FCFTR]         = 0x0034,
 273         [RPADIR]        = 0x0038,
 274         [TRIMD]         = 0x003c,
 275         [RBWAR]         = 0x0040,
 276         [RDFAR]         = 0x0044,
 277         [TBRAR]         = 0x004c,
 278         [TDFAR]         = 0x0050,
 279
 280         [ECMR]          = 0x0160,
 281         [ECSR]          = 0x0164,
 282         [ECSIPR]        = 0x0168,
 283         [PIR]           = 0x016c,
 284         [MAHR]          = 0x0170,
 285         [MALR]          = 0x0174,
 286         [RFLR]          = 0x0178,
 287         [PSR]           = 0x017c,
 288         [TROCR]         = 0x0180,
 289         [CDCR]          = 0x0184,
 290         [LCCR]          = 0x0188,
 291         [CNDCR]         = 0x018c,
 292         [CEFCR]         = 0x0194,
 293         [FRECR]         = 0x0198,
 294         [TSFRCR]        = 0x019c,
 295         [TLFRCR]        = 0x01a0,
 296         [RFCR]          = 0x01a4,
 297         [MAFCR]         = 0x01a8,
 298         [IPGR]          = 0x01b4,
 299         [APR]           = 0x01b8,
 300         [MPR]           = 0x01bc,
 301         [TPAUSER]       = 0x01c4,
 302         [BCFR]          = 0x01cc,
 303
 304         [ARSTR]         = 0x0000,
 305         [TSU_CTRST]     = 0x0004,
 306         [TSU_FWEN0]     = 0x0010,
 307         [TSU_FWEN1]     = 0x0014,
 308         [TSU_FCM]       = 0x0018,
 309         [TSU_BSYSL0]    = 0x0020,
 310         [TSU_BSYSL1]    = 0x0024,
 311         [TSU_PRISL0]    = 0x0028,
 312         [TSU_PRISL1]    = 0x002c,
 313         [TSU_FWSL0]     = 0x0030,
 314         [TSU_FWSL1]     = 0x0034,
 315         [TSU_FWSLC]     = 0x0038,
 316         [TSU_QTAGM0]    = 0x0040,
 317         [TSU_QTAGM1]    = 0x0044,
 318         [TSU_ADQT0]     = 0x0048,
 319         [TSU_ADQT1]     = 0x004c,
 320         [TSU_FWSR]      = 0x0050,
 321         [TSU_FWINMK]    = 0x0054,
 322         [TSU_ADSBSY]    = 0x0060,
 323         [TSU_TEN]       = 0x0064,
 324         [TSU_POST1]     = 0x0070,
 325         [TSU_POST2]     = 0x0074,
 326         [TSU_POST3]     = 0x0078,
 327         [TSU_POST4]     = 0x007c,
 328
 329         [TXNLCR0]       = 0x0080,
 330         [TXALCR0]       = 0x0084,
 331         [RXNLCR0]       = 0x0088,
 332         [RXALCR0]       = 0x008c,
 333         [FWNLCR0]       = 0x0090,
 334         [FWALCR0]       = 0x0094,
 335         [TXNLCR1]       = 0x00a0,
 336         [TXALCR1]       = 0x00a4,
 337         [RXNLCR1]       = 0x00a8,
 338         [RXALCR1]       = 0x00ac,
 339         [FWNLCR1]       = 0x00b0,
 340         [FWALCR1]       = 0x00b4,
 341
 342         [TSU_ADRH0]     = 0x0100,
 343 };
 344 __diag_pop();
 345
 346 static void sh_eth_rcv_snd_disable(struct net_device *ndev);
 347 static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev);
 348
 349 static void sh_eth_write(struct net_device *ndev, u32 data, int enum_index)
 350 {
 351         struct sh_eth_private *mdp = netdev_priv(ndev);
 352         u16 offset = mdp->reg_offset[enum_index];
 353
 354         if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
 355                 return;
 356
 357         iowrite32(data, mdp->addr + offset);
 358 }
 359
 360 static u32 sh_eth_read(struct net_device *ndev, int enum_index)
 361 {
 362         struct sh_eth_private *mdp = netdev_priv(ndev);
 363         u16 offset = mdp->reg_offset[enum_index];
 364
 365         if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
 366                 return ~0U;
 367
 368         return ioread32(mdp->addr + offset);
 369 }
 370
 371 static void sh_eth_modify(struct net_device *ndev, int enum_index, u32 clear,
 372                           u32 set)
 373 {
 374         sh_eth_write(ndev, (sh_eth_read(ndev, enum_index) & ~clear) | set,
 375                      enum_index);
 376 }
 377
 378 static u16 sh_eth_tsu_get_offset(struct sh_eth_private *mdp, int enum_index)
 379 {
 380         return mdp->reg_offset[enum_index];
 381 }
 382
 383 static void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data,
 384                              int enum_index)
 385 {
 386         u16 offset = sh_eth_tsu_get_offset(mdp, enum_index);
 387
 388         if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
 389                 return;
 390
 391         iowrite32(data, mdp->tsu_addr + offset);
 392 }
 393
 394 static u32 sh_eth_tsu_read(struct sh_eth_private *mdp, int enum_index)
 395 {
 396         u16 offset = sh_eth_tsu_get_offset(mdp, enum_index);
 397
 398         if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
 399                 return ~0U;
 400
 401         return ioread32(mdp->tsu_addr + offset);
 402 }
 403
 404 static void sh_eth_soft_swap(char *src, int len)
 405 {
 406 #ifdef __LITTLE_ENDIAN
 407         u32 *p = (u32 *)src;
 408         u32 *maxp = p + DIV_ROUND_UP(len, sizeof(u32));
 409
 410         for (; p < maxp; p++)
 411                 *p = swab32(*p);
 412 #endif
 413 }
 414
 415 static void sh_eth_select_mii(struct net_device *ndev)
 416 {
 417         struct sh_eth_private *mdp = netdev_priv(ndev);
 418         u32 value;
 419
 420         switch (mdp->phy_interface) {
 421         case PHY_INTERFACE_MODE_RGMII ... PHY_INTERFACE_MODE_RGMII_TXID:
 422                 value = 0x3;
 423                 break;
 424         case PHY_INTERFACE_MODE_GMII:
 425                 value = 0x2;
 426                 break;
 427         case PHY_INTERFACE_MODE_MII:
 428                 value = 0x1;
 429                 break;
 430         case PHY_INTERFACE_MODE_RMII:
 431                 value = 0x0;
 432                 break;
 433         default:
 434                 netdev_warn(ndev,
 435                             "PHY interface mode was not setup. Set to MII.\n");
 436                 value = 0x1;
 437                 break;
 438         }
 439
 440         sh_eth_write(ndev, value, RMII_MII);
 441 }
 442
 443 static void sh_eth_set_duplex(struct net_device *ndev)
 444 {
 445         struct sh_eth_private *mdp = netdev_priv(ndev);
 446
 447         sh_eth_modify(ndev, ECMR, ECMR_DM, mdp->duplex ? ECMR_DM : 0);
 448 }
 449
 450 static void sh_eth_chip_reset(struct net_device *ndev)
 451 {
 452         struct sh_eth_private *mdp = netdev_priv(ndev);
 453
 454         /* reset device */
 455         sh_eth_tsu_write(mdp, ARSTR_ARST, ARSTR);
 456         mdelay(1);
 457 }
 458
 459 static int sh_eth_soft_reset(struct net_device *ndev)
 460 {
 461         sh_eth_modify(ndev, EDMR, EDMR_SRST_ETHER, EDMR_SRST_ETHER);
 462         mdelay(3);
 463         sh_eth_modify(ndev, EDMR, EDMR_SRST_ETHER, 0);
 464
 465         return 0;
 466 }
 467
 468 static int sh_eth_check_soft_reset(struct net_device *ndev)
 469 {
 470         int cnt;
 471
 472         for (cnt = 100; cnt > 0; cnt--) {
 473                 if (!(sh_eth_read(ndev, EDMR) & EDMR_SRST_GETHER))
 474                         return 0;
 475                 mdelay(1);
 476         }
 477
 478         netdev_err(ndev, "Device reset failed\n");
 479         return -ETIMEDOUT;
 480 }
 481
 482 static int sh_eth_soft_reset_gether(struct net_device *ndev)
 483 {
 484         struct sh_eth_private *mdp = netdev_priv(ndev);
 485         int ret;
 486
 487         sh_eth_write(ndev, EDSR_ENALL, EDSR);
 488         sh_eth_modify(ndev, EDMR, EDMR_SRST_GETHER, EDMR_SRST_GETHER);
 489
 490         ret = sh_eth_check_soft_reset(ndev);
 491         if (ret)
 492                 return ret;
 493
 494         /* Table Init */
 495         sh_eth_write(ndev, 0, TDLAR);
 496         sh_eth_write(ndev, 0, TDFAR);
 497         sh_eth_write(ndev, 0, TDFXR);
 498         sh_eth_write(ndev, 0, TDFFR);
 499         sh_eth_write(ndev, 0, RDLAR);
 500         sh_eth_write(ndev, 0, RDFAR);
 501         sh_eth_write(ndev, 0, RDFXR);
 502         sh_eth_write(ndev, 0, RDFFR);
 503
 504         /* Reset HW CRC register */
 505         if (mdp->cd->csmr)
 506                 sh_eth_write(ndev, 0, CSMR);
 507
 508         /* Select MII mode */
 509         if (mdp->cd->select_mii)
 510                 sh_eth_select_mii(ndev);
 511
 512         return ret;
 513 }
 514
 515 static void sh_eth_set_rate_gether(struct net_device *ndev)
 516 {
 517         struct sh_eth_private *mdp = netdev_priv(ndev);
 518
 519         if (WARN_ON(!mdp->cd->gecmr))
 520                 return;
 521
 522         switch (mdp->speed) {
 523         case 10: /* 10BASE */
 524                 sh_eth_write(ndev, GECMR_10, GECMR);
 525                 break;
 526         case 100:/* 100BASE */
 527                 sh_eth_write(ndev, GECMR_100, GECMR);
 528                 break;
 529         case 1000: /* 1000BASE */
 530                 sh_eth_write(ndev, GECMR_1000, GECMR);
 531                 break;
 532         }
 533 }
 534
 535 #ifdef CONFIG_OF
 536 /* R7S72100 */
 537 static struct sh_eth_cpu_data r7s72100_data = {
 538         .soft_reset     = sh_eth_soft_reset_gether,
 539
 540         .chip_reset     = sh_eth_chip_reset,
 541         .set_duplex     = sh_eth_set_duplex,
 542
 543         .register_type  = SH_ETH_REG_GIGABIT,
 544
 545         .edtrr_trns     = EDTRR_TRNS_GETHER,
 546         .ecsr_value     = ECSR_ICD,
 547         .ecsipr_value   = ECSIPR_ICDIP,
 548         .eesipr_value   = EESIPR_TWB1IP | EESIPR_TWBIP | EESIPR_TC1IP |
 549                           EESIPR_TABTIP | EESIPR_RABTIP | EESIPR_RFCOFIP |
 550                           EESIPR_ECIIP |
 551                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
 552                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
 553                           EESIPR_RMAFIP | EESIPR_RRFIP |
 554                           EESIPR_RTLFIP | EESIPR_RTSFIP |
 555                           EESIPR_PREIP | EESIPR_CERFIP,
 556
 557         .tx_check       = EESR_TC1 | EESR_FTC,
 558         .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
 559                           EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
 560                           EESR_TDE,
 561         .fdr_value      = 0x0000070f,
 562
 563         .trscer_err_mask = TRSCER_RMAFCE | TRSCER_RRFCE,
 564
 565         .no_psr         = 1,
 566         .apr            = 1,
 567         .mpr            = 1,
 568         .tpauser        = 1,
 569         .hw_swap        = 1,
 570         .rpadir         = 1,
 571         .no_trimd       = 1,
 572         .no_ade         = 1,
 573         .xdfar_rw       = 1,
 574         .csmr           = 1,
 575         .rx_csum        = 1,
 576         .tsu            = 1,
 577         .no_tx_cntrs    = 1,
 578 };
 579
 580 static void sh_eth_chip_reset_r8a7740(struct net_device *ndev)
 581 {
 582         sh_eth_chip_reset(ndev);
 583
 584         sh_eth_select_mii(ndev);
 585 }
 586
 587 /* R8A7740 */
 588 static struct sh_eth_cpu_data r8a7740_data = {
 589         .soft_reset     = sh_eth_soft_reset_gether,
 590
 591         .chip_reset     = sh_eth_chip_reset_r8a7740,
 592         .set_duplex     = sh_eth_set_duplex,
 593         .set_rate       = sh_eth_set_rate_gether,
 594
 595         .register_type  = SH_ETH_REG_GIGABIT,
 596
 597         .edtrr_trns     = EDTRR_TRNS_GETHER,
 598         .ecsr_value     = ECSR_ICD | ECSR_MPD,
 599         .ecsipr_value   = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
 600         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ECIIP |
 601                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
 602                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
 603                           0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
 604                           EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
 605                           EESIPR_CEEFIP | EESIPR_CELFIP |
 606                           EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
 607                           EESIPR_PREIP | EESIPR_CERFIP,
 608
 609         .tx_check       = EESR_TC1 | EESR_FTC,
 610         .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
 611                           EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
 612                           EESR_TDE,
 613         .fdr_value      = 0x0000070f,
 614
 615         .apr            = 1,
 616         .mpr            = 1,
 617         .tpauser        = 1,
 618         .gecmr          = 1,
 619         .bculr          = 1,
 620         .hw_swap        = 1,
 621         .rpadir         = 1,
 622         .no_trimd       = 1,
 623         .no_ade         = 1,
 624         .xdfar_rw       = 1,
 625         .csmr           = 1,
 626         .rx_csum        = 1,
 627         .tsu            = 1,
 628         .select_mii     = 1,
 629         .magic          = 1,
 630         .cexcr          = 1,
 631 };
 632
 633 /* There is CPU dependent code */
 634 static void sh_eth_set_rate_rcar(struct net_device *ndev)
 635 {
 636         struct sh_eth_private *mdp = netdev_priv(ndev);
 637
 638         switch (mdp->speed) {
 639         case 10: /* 10BASE */
 640                 sh_eth_modify(ndev, ECMR, ECMR_ELB, 0);
 641                 break;
 642         case 100:/* 100BASE */
 643                 sh_eth_modify(ndev, ECMR, ECMR_ELB, ECMR_ELB);
 644                 break;
 645         }
 646 }
 647
 648 /* R-Car Gen1 */
 649 static struct sh_eth_cpu_data rcar_gen1_data = {
 650         .soft_reset     = sh_eth_soft_reset,
 651
 652         .set_duplex     = sh_eth_set_duplex,
 653         .set_rate       = sh_eth_set_rate_rcar,
 654
 655         .register_type  = SH_ETH_REG_FAST_RCAR,
 656
 657         .edtrr_trns     = EDTRR_TRNS_ETHER,
 658         .ecsr_value     = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
 659         .ecsipr_value   = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
 660         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ADEIP | EESIPR_ECIIP |
 661                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
 662                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
 663                           EESIPR_RMAFIP | EESIPR_RRFIP |
 664                           EESIPR_RTLFIP | EESIPR_RTSFIP |
 665                           EESIPR_PREIP | EESIPR_CERFIP,
 666
 667         .tx_check       = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
 668         .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
 669                           EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
 670         .fdr_value      = 0x00000f0f,
 671
 672         .apr            = 1,
 673         .mpr            = 1,
 674         .tpauser        = 1,
 675         .hw_swap        = 1,
 676         .no_xdfar       = 1,
 677 };
 678
 679 /* R-Car Gen2 and RZ/G1 */
 680 static struct sh_eth_cpu_data rcar_gen2_data = {
 681         .soft_reset     = sh_eth_soft_reset,
 682
 683         .set_duplex     = sh_eth_set_duplex,
 684         .set_rate       = sh_eth_set_rate_rcar,
 685
 686         .register_type  = SH_ETH_REG_FAST_RCAR,
 687
 688         .edtrr_trns     = EDTRR_TRNS_ETHER,
 689         .ecsr_value     = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD | ECSR_MPD,
 690         .ecsipr_value   = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP |
 691                           ECSIPR_MPDIP,
 692         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ADEIP | EESIPR_ECIIP |
 693                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
 694                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
 695                           EESIPR_RMAFIP | EESIPR_RRFIP |
 696                           EESIPR_RTLFIP | EESIPR_RTSFIP |
 697                           EESIPR_PREIP | EESIPR_CERFIP,
 698
 699         .tx_check       = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
 700         .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
 701                           EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
 702         .fdr_value      = 0x00000f0f,
 703
 704         .trscer_err_mask = TRSCER_RMAFCE,
 705
 706         .apr            = 1,
 707         .mpr            = 1,
 708         .tpauser        = 1,
 709         .hw_swap        = 1,
 710         .no_xdfar       = 1,
 711         .rmiimode       = 1,
 712         .magic          = 1,
 713 };
 714
 715 /* R8A77980 */
 716 static struct sh_eth_cpu_data r8a77980_data = {
 717         .soft_reset     = sh_eth_soft_reset_gether,
 718
 719         .set_duplex     = sh_eth_set_duplex,
 720         .set_rate       = sh_eth_set_rate_gether,
 721
 722         .register_type  = SH_ETH_REG_GIGABIT,
 723
 724         .edtrr_trns     = EDTRR_TRNS_GETHER,
 725         .ecsr_value     = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD | ECSR_MPD,
 726         .ecsipr_value   = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP |
 727                           ECSIPR_MPDIP,
 728         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ECIIP |
 729                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
 730                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
 731                           EESIPR_RMAFIP | EESIPR_RRFIP |
 732                           EESIPR_RTLFIP | EESIPR_RTSFIP |
 733                           EESIPR_PREIP | EESIPR_CERFIP,
 734
 735         .tx_check       = EESR_FTC | EESR_CD | EESR_TRO,
 736         .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
 737                           EESR_RFE | EESR_RDE | EESR_RFRMER |
 738                           EESR_TFE | EESR_TDE | EESR_ECI,
 739         .fdr_value      = 0x0000070f,
 740
 741         .apr            = 1,
 742         .mpr            = 1,
 743         .tpauser        = 1,
 744         .gecmr          = 1,
 745         .bculr          = 1,
 746         .hw_swap        = 1,
 747         .nbst           = 1,
 748         .rpadir         = 1,
 749         .no_trimd       = 1,
 750         .no_ade         = 1,
 751         .xdfar_rw       = 1,
 752         .csmr           = 1,
 753         .rx_csum        = 1,
 754         .select_mii     = 1,
 755         .magic          = 1,
 756         .cexcr          = 1,
 757 };
 758
 759 /* R7S9210 */
 760 static struct sh_eth_cpu_data r7s9210_data = {
 761         .soft_reset     = sh_eth_soft_reset,
 762
 763         .set_duplex     = sh_eth_set_duplex,
 764         .set_rate       = sh_eth_set_rate_rcar,
 765
 766         .register_type  = SH_ETH_REG_FAST_SH4,
 767
 768         .edtrr_trns     = EDTRR_TRNS_ETHER,
 769         .ecsr_value     = ECSR_ICD,
 770         .ecsipr_value   = ECSIPR_ICDIP,
 771         .eesipr_value   = EESIPR_TWBIP | EESIPR_TABTIP | EESIPR_RABTIP |
 772                           EESIPR_RFCOFIP | EESIPR_ECIIP | EESIPR_FTCIP |
 773                           EESIPR_TDEIP | EESIPR_TFUFIP | EESIPR_FRIP |
 774                           EESIPR_RDEIP | EESIPR_RFOFIP | EESIPR_CNDIP |
 775                           EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP |
 776                           EESIPR_RMAFIP | EESIPR_RRFIP | EESIPR_RTLFIP |
 777                           EESIPR_RTSFIP | EESIPR_PREIP | EESIPR_CERFIP,
 778
 779         .tx_check       = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
 780         .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
 781                           EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
 782
 783         .fdr_value      = 0x0000070f,
 784
 785         .trscer_err_mask = TRSCER_RMAFCE | TRSCER_RRFCE,
 786
 787         .apr            = 1,
 788         .mpr            = 1,
 789         .tpauser        = 1,
 790         .hw_swap        = 1,
 791         .rpadir         = 1,
 792         .no_ade         = 1,
 793         .xdfar_rw       = 1,
 794 };
 795 #endif /* CONFIG_OF */
 796
 797 static void sh_eth_set_rate_sh7724(struct net_device *ndev)
 798 {
 799         struct sh_eth_private *mdp = netdev_priv(ndev);
 800
 801         switch (mdp->speed) {
 802         case 10: /* 10BASE */
 803                 sh_eth_modify(ndev, ECMR, ECMR_RTM, 0);
 804                 break;
 805         case 100:/* 100BASE */
 806                 sh_eth_modify(ndev, ECMR, ECMR_RTM, ECMR_RTM);
 807                 break;
 808         }
 809 }
 810
 811 /* SH7724 */
 812 static struct sh_eth_cpu_data sh7724_data = {
 813         .soft_reset     = sh_eth_soft_reset,
 814
 815         .set_duplex     = sh_eth_set_duplex,
 816         .set_rate       = sh_eth_set_rate_sh7724,
 817
 818         .register_type  = SH_ETH_REG_FAST_SH4,
 819
 820         .edtrr_trns     = EDTRR_TRNS_ETHER,
 821         .ecsr_value     = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD,
 822         .ecsipr_value   = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP,
 823         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ADEIP | EESIPR_ECIIP |
 824                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
 825                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
 826                           EESIPR_RMAFIP | EESIPR_RRFIP |
 827                           EESIPR_RTLFIP | EESIPR_RTSFIP |
 828                           EESIPR_PREIP | EESIPR_CERFIP,
 829
 830         .tx_check       = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
 831         .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
 832                           EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
 833
 834         .apr            = 1,
 835         .mpr            = 1,
 836         .tpauser        = 1,
 837         .hw_swap        = 1,
 838         .rpadir         = 1,
 839 };
 840
 841 static void sh_eth_set_rate_sh7757(struct net_device *ndev)
 842 {
 843         struct sh_eth_private *mdp = netdev_priv(ndev);
 844
 845         switch (mdp->speed) {
 846         case 10: /* 10BASE */
 847                 sh_eth_write(ndev, 0, RTRATE);
 848                 break;
 849         case 100:/* 100BASE */
 850                 sh_eth_write(ndev, 1, RTRATE);
 851                 break;
 852         }
 853 }
 854
 855 /* SH7757 */
 856 static struct sh_eth_cpu_data sh7757_data = {
 857         .soft_reset     = sh_eth_soft_reset,
 858
 859         .set_duplex     = sh_eth_set_duplex,
 860         .set_rate       = sh_eth_set_rate_sh7757,
 861
 862         .register_type  = SH_ETH_REG_FAST_SH4,
 863
 864         .edtrr_trns     = EDTRR_TRNS_ETHER,
 865         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ECIIP |
 866                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
 867                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
 868                           0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
 869                           EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
 870                           EESIPR_CEEFIP | EESIPR_CELFIP |
 871                           EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
 872                           EESIPR_PREIP | EESIPR_CERFIP,
 873
 874         .tx_check       = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_TRO,
 875         .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE |
 876                           EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
 877
 878         .irq_flags      = IRQF_SHARED,
 879         .apr            = 1,
 880         .mpr            = 1,
 881         .tpauser        = 1,
 882         .hw_swap        = 1,
 883         .no_ade         = 1,
 884         .rpadir         = 1,
 885         .rtrate         = 1,
 886         .dual_port      = 1,
 887 };
 888
 889 #define SH_GIGA_ETH_BASE        0xfee00000UL
 890 #define GIGA_MALR(port)         (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8)
 891 #define GIGA_MAHR(port)         (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0)
 892 static void sh_eth_chip_reset_giga(struct net_device *ndev)
 893 {
 894         u32 mahr[2], malr[2];
 895         int i;
 896
 897         /* save MAHR and MALR */
 898         for (i = 0; i < 2; i++) {
 899                 malr[i] = ioread32((void *)GIGA_MALR(i));
 900                 mahr[i] = ioread32((void *)GIGA_MAHR(i));
 901         }
 902
 903         sh_eth_chip_reset(ndev);
 904
 905         /* restore MAHR and MALR */
 906         for (i = 0; i < 2; i++) {
 907                 iowrite32(malr[i], (void *)GIGA_MALR(i));
 908                 iowrite32(mahr[i], (void *)GIGA_MAHR(i));
 909         }
 910 }
 911
 912 static void sh_eth_set_rate_giga(struct net_device *ndev)
 913 {
 914         struct sh_eth_private *mdp = netdev_priv(ndev);
 915
 916         if (WARN_ON(!mdp->cd->gecmr))
 917                 return;
 918
 919         switch (mdp->speed) {
 920         case 10: /* 10BASE */
 921                 sh_eth_write(ndev, 0x00000000, GECMR);
 922                 break;
 923         case 100:/* 100BASE */
 924                 sh_eth_write(ndev, 0x00000010, GECMR);
 925                 break;
 926         case 1000: /* 1000BASE */
 927                 sh_eth_write(ndev, 0x00000020, GECMR);
 928                 break;
 929         }
 930 }
 931
 932 /* SH7757(GETHERC) */
 933 static struct sh_eth_cpu_data sh7757_data_giga = {
 934         .soft_reset     = sh_eth_soft_reset_gether,
 935
 936         .chip_reset     = sh_eth_chip_reset_giga,
 937         .set_duplex     = sh_eth_set_duplex,
 938         .set_rate       = sh_eth_set_rate_giga,
 939
 940         .register_type  = SH_ETH_REG_GIGABIT,
 941
 942         .edtrr_trns     = EDTRR_TRNS_GETHER,
 943         .ecsr_value     = ECSR_ICD | ECSR_MPD,
 944         .ecsipr_value   = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
 945         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ECIIP |
 946                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
 947                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
 948                           0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
 949                           EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
 950                           EESIPR_CEEFIP | EESIPR_CELFIP |
 951                           EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
 952                           EESIPR_PREIP | EESIPR_CERFIP,
 953
 954         .tx_check       = EESR_TC1 | EESR_FTC,
 955         .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
 956                           EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
 957                           EESR_TDE,
 958         .fdr_value      = 0x0000072f,
 959
 960         .irq_flags      = IRQF_SHARED,
 961         .apr            = 1,
 962         .mpr            = 1,
 963         .tpauser        = 1,
 964         .gecmr          = 1,
 965         .bculr          = 1,
 966         .hw_swap        = 1,
 967         .rpadir         = 1,
 968         .no_trimd       = 1,
 969         .no_ade         = 1,
 970         .xdfar_rw       = 1,
 971         .tsu            = 1,
 972         .cexcr          = 1,
 973         .dual_port      = 1,
 974 };
 975
 976 /* SH7734 */
 977 static struct sh_eth_cpu_data sh7734_data = {
 978         .soft_reset     = sh_eth_soft_reset_gether,
 979
 980         .chip_reset     = sh_eth_chip_reset,
 981         .set_duplex     = sh_eth_set_duplex,
 982         .set_rate       = sh_eth_set_rate_gether,
 983
 984         .register_type  = SH_ETH_REG_GIGABIT,
 985
 986         .edtrr_trns     = EDTRR_TRNS_GETHER,
 987         .ecsr_value     = ECSR_ICD | ECSR_MPD,
 988         .ecsipr_value   = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
 989         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ECIIP |
 990                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
 991                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
 992                           EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP |
 993                           EESIPR_RMAFIP | EESIPR_CEEFIP | EESIPR_CELFIP |
 994                           EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
 995                           EESIPR_PREIP | EESIPR_CERFIP,
 996
 997         .tx_check       = EESR_TC1 | EESR_FTC,
 998         .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
 999                           EESR_RFE | EESR_RDE | EESR_RFRMER | EESR_TFE |
1000                           EESR_TDE,
1001
1002         .apr            = 1,
1003         .mpr            = 1,
1004         .tpauser        = 1,
1005         .gecmr          = 1,
1006         .bculr          = 1,
1007         .hw_swap        = 1,
1008         .no_trimd       = 1,
1009         .no_ade         = 1,
1010         .xdfar_rw       = 1,
1011         .tsu            = 1,
1012         .csmr           = 1,
1013         .rx_csum        = 1,
1014         .select_mii     = 1,
1015         .magic          = 1,
1016         .cexcr          = 1,
1017 };
1018
1019 /* SH7763 */
1020 static struct sh_eth_cpu_data sh7763_data = {
1021         .soft_reset     = sh_eth_soft_reset_gether,
1022
1023         .chip_reset     = sh_eth_chip_reset,
1024         .set_duplex     = sh_eth_set_duplex,
1025         .set_rate       = sh_eth_set_rate_gether,
1026
1027         .register_type  = SH_ETH_REG_GIGABIT,
1028
1029         .edtrr_trns     = EDTRR_TRNS_GETHER,
1030         .ecsr_value     = ECSR_ICD | ECSR_MPD,
1031         .ecsipr_value   = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP,
1032         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ECIIP |
1033                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
1034                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
1035                           EESIPR_DLCIP | EESIPR_CDIP | EESIPR_TROIP |
1036                           EESIPR_RMAFIP | EESIPR_CEEFIP | EESIPR_CELFIP |
1037                           EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
1038                           EESIPR_PREIP | EESIPR_CERFIP,
1039
1040         .tx_check       = EESR_TC1 | EESR_FTC,
1041         .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT |
1042                           EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE,
1043
1044         .apr            = 1,
1045         .mpr            = 1,
1046         .tpauser        = 1,
1047         .gecmr          = 1,
1048         .bculr          = 1,
1049         .hw_swap        = 1,
1050         .no_trimd       = 1,
1051         .no_ade         = 1,
1052         .xdfar_rw       = 1,
1053         .tsu            = 1,
1054         .irq_flags      = IRQF_SHARED,
1055         .magic          = 1,
1056         .cexcr          = 1,
1057         .rx_csum        = 1,
1058         .dual_port      = 1,
1059 };
1060
1061 static struct sh_eth_cpu_data sh7619_data = {
1062         .soft_reset     = sh_eth_soft_reset,
1063
1064         .register_type  = SH_ETH_REG_FAST_SH3_SH2,
1065
1066         .edtrr_trns     = EDTRR_TRNS_ETHER,
1067         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ECIIP |
1068                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
1069                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
1070                           0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
1071                           EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
1072                           EESIPR_CEEFIP | EESIPR_CELFIP |
1073                           EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
1074                           EESIPR_PREIP | EESIPR_CERFIP,
1075
1076         .apr            = 1,
1077         .mpr            = 1,
1078         .tpauser        = 1,
1079         .hw_swap        = 1,
1080 };
1081
1082 static struct sh_eth_cpu_data sh771x_data = {
1083         .soft_reset     = sh_eth_soft_reset,
1084
1085         .register_type  = SH_ETH_REG_FAST_SH3_SH2,
1086
1087         .edtrr_trns     = EDTRR_TRNS_ETHER,
1088         .eesipr_value   = EESIPR_RFCOFIP | EESIPR_ECIIP |
1089                           EESIPR_FTCIP | EESIPR_TDEIP | EESIPR_TFUFIP |
1090                           EESIPR_FRIP | EESIPR_RDEIP | EESIPR_RFOFIP |
1091                           0x0000f000 | EESIPR_CNDIP | EESIPR_DLCIP |
1092                           EESIPR_CDIP | EESIPR_TROIP | EESIPR_RMAFIP |
1093                           EESIPR_CEEFIP | EESIPR_CELFIP |
1094                           EESIPR_RRFIP | EESIPR_RTLFIP | EESIPR_RTSFIP |
1095                           EESIPR_PREIP | EESIPR_CERFIP,
1096
1097         .trscer_err_mask = TRSCER_RMAFCE,
1098
1099         .tsu            = 1,
1100         .dual_port      = 1,
1101 };
1102
1103 static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
1104 {
1105         if (!cd->ecsr_value)
1106                 cd->ecsr_value = DEFAULT_ECSR_INIT;
1107
1108         if (!cd->ecsipr_value)
1109                 cd->ecsipr_value = DEFAULT_ECSIPR_INIT;
1110
1111         if (!cd->fcftr_value)
1112                 cd->fcftr_value = DEFAULT_FIFO_F_D_RFF |
1113                                   DEFAULT_FIFO_F_D_RFD;
1114
1115         if (!cd->fdr_value)
1116                 cd->fdr_value = DEFAULT_FDR_INIT;
1117
1118         if (!cd->tx_check)
1119                 cd->tx_check = DEFAULT_TX_CHECK;
1120
1121         if (!cd->eesr_err_check)
1122                 cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK;
1123
1124         if (!cd->trscer_err_mask)
1125                 cd->trscer_err_mask = DEFAULT_TRSCER_ERR_MASK;
1126 }
1127
1128 static void sh_eth_set_receive_align(struct sk_buff *skb)
1129 {
1130         uintptr_t reserve = (uintptr_t)skb->data & (SH_ETH_RX_ALIGN - 1);
1131
1132         if (reserve)
1133                 skb_reserve(skb, SH_ETH_RX_ALIGN - reserve);
1134 }
1135
1136 /* Program the hardware MAC address from dev->dev_addr. */
1137 static void update_mac_address(struct net_device *ndev)
1138 {
1139         sh_eth_write(ndev,
1140                      (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) |
1141                      (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR);
1142         sh_eth_write(ndev,
1143                      (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR);
1144 }
1145
1146 /* Get MAC address from SuperH MAC address register
1147  *
1148  * SuperH's Ethernet device doesn't have 'ROM' to MAC address.
1149  * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g).
1150  * When you want use this device, you must set MAC address in bootloader.
1151  *
1152  */
1153 static void read_mac_address(struct net_device *ndev, unsigned char *mac)
1154 {
1155         if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) {
1156                 eth_hw_addr_set(ndev, mac);
1157         } else {
1158                 u32 mahr = sh_eth_read(ndev, MAHR);
1159                 u32 malr = sh_eth_read(ndev, MALR);
1160                 u8 addr[ETH_ALEN];
1161
1162                 addr[0] = (mahr >> 24) & 0xFF;
1163                 addr[1] = (mahr >> 16) & 0xFF;
1164                 addr[2] = (mahr >>  8) & 0xFF;
1165                 addr[3] = (mahr >>  0) & 0xFF;
1166                 addr[4] = (malr >>  8) & 0xFF;
1167                 addr[5] = (malr >>  0) & 0xFF;
1168                 eth_hw_addr_set(ndev, addr);
1169         }
1170 }
1171
1172 struct bb_info {
1173         void (*set_gate)(void *addr);
1174         struct mdiobb_ctrl ctrl;
1175         void *addr;
1176 };
1177
1178 static void sh_mdio_ctrl(struct mdiobb_ctrl *ctrl, u32 mask, int set)
1179 {
1180         struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
1181         u32 pir;
1182
1183         if (bitbang->set_gate)
1184                 bitbang->set_gate(bitbang->addr);
1185
1186         pir = ioread32(bitbang->addr);
1187         if (set)
1188                 pir |=  mask;
1189         else
1190                 pir &= ~mask;
1191         iowrite32(pir, bitbang->addr);
1192 }
1193
1194 /* Data I/O pin control */
1195 static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit)
1196 {
1197         sh_mdio_ctrl(ctrl, PIR_MMD, bit);
1198 }
1199
1200 /* Set bit data*/
1201 static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit)
1202 {
1203         sh_mdio_ctrl(ctrl, PIR_MDO, bit);
1204 }
1205
1206 /* Get bit data*/
1207 static int sh_get_mdio(struct mdiobb_ctrl *ctrl)
1208 {
1209         struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);
1210
1211         if (bitbang->set_gate)
1212                 bitbang->set_gate(bitbang->addr);
1213
1214         return (ioread32(bitbang->addr) & PIR_MDI) != 0;
1215 }
1216
1217 /* MDC pin control */
1218 static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit)
1219 {
1220         sh_mdio_ctrl(ctrl, PIR_MDC, bit);
1221 }
1222
1223 /* mdio bus control struct */
1224 static const struct mdiobb_ops bb_ops = {
1225         .owner = THIS_MODULE,
1226         .set_mdc = sh_mdc_ctrl,
1227         .set_mdio_dir = sh_mmd_ctrl,
1228         .set_mdio_data = sh_set_mdio,
1229         .get_mdio_data = sh_get_mdio,
1230 };
1231
1232 /* free Tx skb function */
1233 static int sh_eth_tx_free(struct net_device *ndev, bool sent_only)
1234 {
1235         struct sh_eth_private *mdp = netdev_priv(ndev);
1236         struct sh_eth_txdesc *txdesc;
1237         int free_num = 0;
1238         int entry;
1239         bool sent;
1240
1241         for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) {
1242                 entry = mdp->dirty_tx % mdp->num_tx_ring;
1243                 txdesc = &mdp->tx_ring[entry];
1244                 sent = !(txdesc->status & cpu_to_le32(TD_TACT));
1245                 if (sent_only && !sent)
1246                         break;
1247                 /* TACT bit must be checked before all the following reads */
1248                 dma_rmb();
1249                 netif_info(mdp, tx_done, ndev,
1250                            "tx entry %d status 0x%08x\n",
1251                            entry, le32_to_cpu(txdesc->status));
1252                 /* Free the original skb. */
1253                 if (mdp->tx_skbuff[entry]) {
1254                         dma_unmap_single(&mdp->pdev->dev,
1255                                          le32_to_cpu(txdesc->addr),
1256                                          le32_to_cpu(txdesc->len) >> 16,
1257                                          DMA_TO_DEVICE);
1258                         dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
1259                         mdp->tx_skbuff[entry] = NULL;
1260                         free_num++;
1261                 }
1262                 txdesc->status = cpu_to_le32(TD_TFP);
1263                 if (entry >= mdp->num_tx_ring - 1)
1264                         txdesc->status |= cpu_to_le32(TD_TDLE);
1265
1266                 if (sent) {
1267                         ndev->stats.tx_packets++;
1268                         ndev->stats.tx_bytes += le32_to_cpu(txdesc->len) >> 16;
1269                 }
1270         }
1271         return free_num;
1272 }
1273
1274 /* free skb and descriptor buffer */
1275 static void sh_eth_ring_free(struct net_device *ndev)
1276 {
1277         struct sh_eth_private *mdp = netdev_priv(ndev);
1278         int ringsize, i;
1279
1280         if (mdp->rx_ring) {
1281                 for (i = 0; i < mdp->num_rx_ring; i++) {
1282                         if (mdp->rx_skbuff[i]) {
1283                                 struct sh_eth_rxdesc *rxdesc = &mdp->rx_ring[i];
1284
1285                                 dma_unmap_single(&mdp->pdev->dev,
1286                                                  le32_to_cpu(rxdesc->addr),
1287                                                  ALIGN(mdp->rx_buf_sz, 32),
1288                                                  DMA_FROM_DEVICE);
1289                         }
1290                 }
1291                 ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
1292                 dma_free_coherent(&mdp->pdev->dev, ringsize, mdp->rx_ring,
1293                                   mdp->rx_desc_dma);
1294                 mdp->rx_ring = NULL;
1295         }
1296
1297         /* Free Rx skb ringbuffer */
1298         if (mdp->rx_skbuff) {
1299                 for (i = 0; i < mdp->num_rx_ring; i++)
1300                         dev_kfree_skb(mdp->rx_skbuff[i]);
1301         }
1302         kfree(mdp->rx_skbuff);
1303         mdp->rx_skbuff = NULL;
1304
1305         if (mdp->tx_ring) {
1306                 sh_eth_tx_free(ndev, false);
1307
1308                 ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
1309                 dma_free_coherent(&mdp->pdev->dev, ringsize, mdp->tx_ring,
1310                                   mdp->tx_desc_dma);
1311                 mdp->tx_ring = NULL;
1312         }
1313
1314         /* Free Tx skb ringbuffer */
1315         kfree(mdp->tx_skbuff);
1316         mdp->tx_skbuff = NULL;
1317 }
1318
1319 /* format skb and descriptor buffer */
1320 static void sh_eth_ring_format(struct net_device *ndev)
1321 {
1322         struct sh_eth_private *mdp = netdev_priv(ndev);
1323         int i;
1324         struct sk_buff *skb;
1325         struct sh_eth_rxdesc *rxdesc = NULL;
1326         struct sh_eth_txdesc *txdesc = NULL;
1327         int rx_ringsize = sizeof(*rxdesc) * mdp->num_rx_ring;
1328         int tx_ringsize = sizeof(*txdesc) * mdp->num_tx_ring;
1329         int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1;
1330         dma_addr_t dma_addr;
1331         u32 buf_len;
1332
1333         mdp->cur_rx = 0;
1334         mdp->cur_tx = 0;
1335         mdp->dirty_rx = 0;
1336         mdp->dirty_tx = 0;
1337
1338         memset(mdp->rx_ring, 0, rx_ringsize);
1339
1340         /* build Rx ring buffer */
1341         for (i = 0; i < mdp->num_rx_ring; i++) {
1342                 /* skb */
1343                 mdp->rx_skbuff[i] = NULL;
1344                 skb = netdev_alloc_skb(ndev, skbuff_size);
1345                 if (skb == NULL)
1346                         break;
1347                 sh_eth_set_receive_align(skb);
1348
1349                 /* The size of the buffer is a multiple of 32 bytes. */
1350                 buf_len = ALIGN(mdp->rx_buf_sz, 32);
1351                 dma_addr = dma_map_single(&mdp->pdev->dev, skb->data, buf_len,
1352                                           DMA_FROM_DEVICE);
1353                 if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
1354                         kfree_skb(skb);
1355                         break;
1356                 }
1357                 mdp->rx_skbuff[i] = skb;
1358
1359                 /* RX descriptor */
1360                 rxdesc = &mdp->rx_ring[i];
1361                 rxdesc->len = cpu_to_le32(buf_len << 16);
1362                 rxdesc->addr = cpu_to_le32(dma_addr);
1363                 rxdesc->status = cpu_to_le32(RD_RACT | RD_RFP);
1364
1365                 /* Rx descriptor address set */
1366                 if (i == 0) {
1367                         sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR);
1368                         if (mdp->cd->xdfar_rw)
1369                                 sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR);
1370                 }
1371         }
1372
1373         mdp->dirty_rx = (u32) (i - mdp->num_rx_ring);
1374
1375         /* Mark the last entry as wrapping the ring. */
1376         if (rxdesc)
1377                 rxdesc->status |= cpu_to_le32(RD_RDLE);
1378
1379         memset(mdp->tx_ring, 0, tx_ringsize);
1380
1381         /* build Tx ring buffer */
1382         for (i = 0; i < mdp->num_tx_ring; i++) {
1383                 mdp->tx_skbuff[i] = NULL;
1384                 txdesc = &mdp->tx_ring[i];
1385                 txdesc->status = cpu_to_le32(TD_TFP);
1386                 txdesc->len = cpu_to_le32(0);
1387                 if (i == 0) {
1388                         /* Tx descriptor address set */
1389                         sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR);
1390                         if (mdp->cd->xdfar_rw)
1391                                 sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR);
1392                 }
1393         }
1394
1395         txdesc->status |= cpu_to_le32(TD_TDLE);
1396 }
1397
1398 /* Get skb and descriptor buffer */
1399 static int sh_eth_ring_init(struct net_device *ndev)
1400 {
1401         struct sh_eth_private *mdp = netdev_priv(ndev);
1402         int rx_ringsize, tx_ringsize;
1403
1404         /* +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
1405          * card needs room to do 8 byte alignment, +2 so we can reserve
1406          * the first 2 bytes, and +16 gets room for the status word from the
1407          * card.
1408          */
1409         mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ :
1410                           (((ndev->mtu + 26 + 7) & ~7) + 2 + 16));
1411         if (mdp->cd->rpadir)
1412                 mdp->rx_buf_sz += NET_IP_ALIGN;
1413
1414         /* Allocate RX and TX skb rings */
1415         mdp->rx_skbuff = kcalloc(mdp->num_rx_ring, sizeof(*mdp->rx_skbuff),
1416                                  GFP_KERNEL);
1417         if (!mdp->rx_skbuff)
1418                 return -ENOMEM;
1419
1420         mdp->tx_skbuff = kcalloc(mdp->num_tx_ring, sizeof(*mdp->tx_skbuff),
1421                                  GFP_KERNEL);
1422         if (!mdp->tx_skbuff)
1423                 goto ring_free;
1424
1425         /* Allocate all Rx descriptors. */
1426         rx_ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring;
1427         mdp->rx_ring = dma_alloc_coherent(&mdp->pdev->dev, rx_ringsize,
1428                                           &mdp->rx_desc_dma, GFP_KERNEL);
1429         if (!mdp->rx_ring)
1430                 goto ring_free;
1431
1432         mdp->dirty_rx = 0;
1433
1434         /* Allocate all Tx descriptors. */
1435         tx_ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring;
1436         mdp->tx_ring = dma_alloc_coherent(&mdp->pdev->dev, tx_ringsize,
1437                                           &mdp->tx_desc_dma, GFP_KERNEL);
1438         if (!mdp->tx_ring)
1439                 goto ring_free;
1440         return 0;
1441
1442 ring_free:
1443         /* Free Rx and Tx skb ring buffer and DMA buffer */
1444         sh_eth_ring_free(ndev);
1445
1446         return -ENOMEM;
1447 }
1448
1449 static int sh_eth_dev_init(struct net_device *ndev)
1450 {
1451         struct sh_eth_private *mdp = netdev_priv(ndev);
1452         int ret;
1453
1454         /* Soft Reset */
1455         ret = mdp->cd->soft_reset(ndev);
1456         if (ret)
1457                 return ret;
1458
1459         if (mdp->cd->rmiimode)
1460                 sh_eth_write(ndev, 0x1, RMIIMODE);
1461
1462         /* Descriptor format */
1463         sh_eth_ring_format(ndev);
1464         if (mdp->cd->rpadir)
1465                 sh_eth_write(ndev, NET_IP_ALIGN << 16, RPADIR);
1466
1467         /* all sh_eth int mask */
1468         sh_eth_write(ndev, 0, EESIPR);
1469
1470 #if defined(__LITTLE_ENDIAN)
1471         if (mdp->cd->hw_swap)
1472                 sh_eth_write(ndev, EDMR_EL, EDMR);
1473         else
1474 #endif
1475                 sh_eth_write(ndev, 0, EDMR);
1476
1477         /* FIFO size set */
1478         sh_eth_write(ndev, mdp->cd->fdr_value, FDR);
1479         sh_eth_write(ndev, 0, TFTR);
1480
1481         /* Frame recv control (enable multiple-packets per rx irq) */
1482         sh_eth_write(ndev, RMCR_RNC, RMCR);
1483
1484         sh_eth_write(ndev, mdp->cd->trscer_err_mask, TRSCER);
1485
1486         /* DMA transfer burst mode */
1487         if (mdp->cd->nbst)
1488                 sh_eth_modify(ndev, EDMR, EDMR_NBST, EDMR_NBST);
1489
1490         /* Burst cycle count upper-limit */
1491         if (mdp->cd->bculr)
1492                 sh_eth_write(ndev, 0x800, BCULR);
1493
1494         sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR);
1495
1496         if (!mdp->cd->no_trimd)
1497                 sh_eth_write(ndev, 0, TRIMD);
1498
1499         /* Recv frame limit set register */
1500         sh_eth_write(ndev, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN,
1501                      RFLR);
1502
1503         sh_eth_modify(ndev, EESR, 0, 0);
1504         mdp->irq_enabled = true;
1505         sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
1506
1507         /* EMAC Mode: PAUSE prohibition; Duplex; RX Checksum; TX; RX */
1508         sh_eth_write(ndev, ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) |
1509                      (ndev->features & NETIF_F_RXCSUM ? ECMR_RCSC : 0) |
1510                      ECMR_TE | ECMR_RE, ECMR);
1511
1512         if (mdp->cd->set_rate)
1513                 mdp->cd->set_rate(ndev);
1514
1515         /* E-MAC Status Register clear */
1516         sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR);
1517
1518         /* E-MAC Interrupt Enable register */
1519         sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR);
1520
1521         /* Set MAC address */
1522         update_mac_address(ndev);
1523
1524         /* mask reset */
1525         if (mdp->cd->apr)
1526                 sh_eth_write(ndev, 1, APR);
1527         if (mdp->cd->mpr)
1528                 sh_eth_write(ndev, 1, MPR);
1529         if (mdp->cd->tpauser)
1530                 sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER);
1531
1532         /* Setting the Rx mode will start the Rx process. */
1533         sh_eth_write(ndev, EDRRR_R, EDRRR);
1534
1535         return ret;
1536 }
1537
1538 static void sh_eth_dev_exit(struct net_device *ndev)
1539 {
1540         struct sh_eth_private *mdp = netdev_priv(ndev);
1541         int i;
1542
1543         /* Deactivate all TX descriptors, so DMA should stop at next
1544          * packet boundary if it's currently running
1545          */
1546         for (i = 0; i < mdp->num_tx_ring; i++)
1547                 mdp->tx_ring[i].status &= ~cpu_to_le32(TD_TACT);
1548
1549         /* Disable TX FIFO egress to MAC */
1550         sh_eth_rcv_snd_disable(ndev);
1551
1552         /* Stop RX DMA at next packet boundary */
1553         sh_eth_write(ndev, 0, EDRRR);
1554
1555         /* Aside from TX DMA, we can't tell when the hardware is
1556          * really stopped, so we need to reset to make sure.
1557          * Before doing that, wait for long enough to *probably*
1558          * finish transmitting the last packet and poll stats.
1559          */
1560         msleep(2); /* max frame time at 10 Mbps < 1250 us */
1561         sh_eth_get_stats(ndev);
1562         mdp->cd->soft_reset(ndev);
1563
1564         /* Set the RMII mode again if required */
1565         if (mdp->cd->rmiimode)
1566                 sh_eth_write(ndev, 0x1, RMIIMODE);
1567
1568         /* Set MAC address again */
1569         update_mac_address(ndev);
1570 }
1571
1572 static void sh_eth_rx_csum(struct sk_buff *skb)
1573 {
1574         u8 *hw_csum;
1575
1576         /* The hardware checksum is 2 bytes appended to packet data */
1577         if (unlikely(skb->len < sizeof(__sum16)))
1578                 return;
1579         hw_csum = skb_tail_pointer(skb) - sizeof(__sum16);
1580         skb->csum = csum_unfold((__force __sum16)get_unaligned_le16(hw_csum));
1581         skb->ip_summed = CHECKSUM_COMPLETE;
1582         skb_trim(skb, skb->len - sizeof(__sum16));
1583 }
1584
1585 /* Packet receive function */
1586 static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
1587 {
1588         struct sh_eth_private *mdp = netdev_priv(ndev);
1589         struct sh_eth_rxdesc *rxdesc;
1590
1591         int entry = mdp->cur_rx % mdp->num_rx_ring;
1592         int boguscnt = (mdp->dirty_rx + mdp->num_rx_ring) - mdp->cur_rx;
1593         int limit;
1594         struct sk_buff *skb;
1595         u32 desc_status;
1596         int skbuff_size = mdp->rx_buf_sz + SH_ETH_RX_ALIGN + 32 - 1;
1597         dma_addr_t dma_addr;
1598         u16 pkt_len;
1599         u32 buf_len;
1600
1601         boguscnt = min(boguscnt, *quota);
1602         limit = boguscnt;
1603         rxdesc = &mdp->rx_ring[entry];
1604         while (!(rxdesc->status & cpu_to_le32(RD_RACT))) {
1605                 /* RACT bit must be checked before all the following reads */
1606                 dma_rmb();
1607                 desc_status = le32_to_cpu(rxdesc->status);
1608                 pkt_len = le32_to_cpu(rxdesc->len) & RD_RFL;
1609
1610                 if (--boguscnt < 0)
1611                         break;
1612
1613                 netif_info(mdp, rx_status, ndev,
1614                            "rx entry %d status 0x%08x len %d\n",
1615                            entry, desc_status, pkt_len);
1616
1617                 if (!(desc_status & RDFEND))
1618                         ndev->stats.rx_length_errors++;
1619
1620                 /* In case of almost all GETHER/ETHERs, the Receive Frame State
1621                  * (RFS) bits in the Receive Descriptor 0 are from bit 9 to
1622                  * bit 0. However, in case of the R8A7740 and R7S72100
1623                  * the RFS bits are from bit 25 to bit 16. So, the
1624                  * driver needs right shifting by 16.
1625                  */
1626                 if (mdp->cd->csmr)
1627                         desc_status >>= 16;
1628
1629                 skb = mdp->rx_skbuff[entry];
1630                 if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 |
1631                                    RD_RFS5 | RD_RFS6 | RD_RFS10)) {
1632                         ndev->stats.rx_errors++;
1633                         if (desc_status & RD_RFS1)
1634                                 ndev->stats.rx_crc_errors++;
1635                         if (desc_status & RD_RFS2)
1636                                 ndev->stats.rx_frame_errors++;
1637                         if (desc_status & RD_RFS3)
1638                                 ndev->stats.rx_length_errors++;
1639                         if (desc_status & RD_RFS4)
1640                                 ndev->stats.rx_length_errors++;
1641                         if (desc_status & RD_RFS6)
1642                                 ndev->stats.rx_missed_errors++;
1643                         if (desc_status & RD_RFS10)
1644                                 ndev->stats.rx_over_errors++;
1645                 } else  if (skb) {
1646                         dma_addr = le32_to_cpu(rxdesc->addr);
1647                         if (!mdp->cd->hw_swap)
1648                                 sh_eth_soft_swap(
1649                                         phys_to_virt(ALIGN(dma_addr, 4)),
1650                                         pkt_len + 2);
1651                         mdp->rx_skbuff[entry] = NULL;
1652                         if (mdp->cd->rpadir)
1653                                 skb_reserve(skb, NET_IP_ALIGN);
1654                         dma_unmap_single(&mdp->pdev->dev, dma_addr,
1655                                          ALIGN(mdp->rx_buf_sz, 32),
1656                                          DMA_FROM_DEVICE);
1657                         skb_put(skb, pkt_len);
1658                         skb->protocol = eth_type_trans(skb, ndev);
1659                         if (ndev->features & NETIF_F_RXCSUM)
1660                                 sh_eth_rx_csum(skb);
1661                         netif_receive_skb(skb);
1662                         ndev->stats.rx_packets++;
1663                         ndev->stats.rx_bytes += pkt_len;
1664                         if (desc_status & RD_RFS8)
1665                                 ndev->stats.multicast++;
1666                 }
1667                 entry = (++mdp->cur_rx) % mdp->num_rx_ring;
1668                 rxdesc = &mdp->rx_ring[entry];
1669         }
1670
1671         /* Refill the Rx ring buffers. */
1672         for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) {
1673                 entry = mdp->dirty_rx % mdp->num_rx_ring;
1674                 rxdesc = &mdp->rx_ring[entry];
1675                 /* The size of the buffer is 32 byte boundary. */
1676                 buf_len = ALIGN(mdp->rx_buf_sz, 32);
1677                 rxdesc->len = cpu_to_le32(buf_len << 16);
1678
1679                 if (mdp->rx_skbuff[entry] == NULL) {
1680                         skb = netdev_alloc_skb(ndev, skbuff_size);
1681                         if (skb == NULL)
1682                                 break;  /* Better luck next round. */
1683                         sh_eth_set_receive_align(skb);
1684                         dma_addr = dma_map_single(&mdp->pdev->dev, skb->data,
1685                                                   buf_len, DMA_FROM_DEVICE);
1686                         if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
1687                                 kfree_skb(skb);
1688                                 break;
1689                         }
1690                         mdp->rx_skbuff[entry] = skb;
1691
1692                         skb_checksum_none_assert(skb);
1693                         rxdesc->addr = cpu_to_le32(dma_addr);
1694                 }
1695                 dma_wmb(); /* RACT bit must be set after all the above writes */
1696                 if (entry >= mdp->num_rx_ring - 1)
1697                         rxdesc->status |=
1698                                 cpu_to_le32(RD_RACT | RD_RFP | RD_RDLE);
1699                 else
1700                         rxdesc->status |= cpu_to_le32(RD_RACT | RD_RFP);
1701         }
1702
1703         /* Restart Rx engine if stopped. */
1704         /* If we don't need to check status, don't. -KDU */
1705         if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R)) {
1706                 /* fix the values for the next receiving if RDE is set */
1707                 if (intr_status & EESR_RDE && !mdp->cd->no_xdfar) {
1708                         u32 count = (sh_eth_read(ndev, RDFAR) -
1709                                      sh_eth_read(ndev, RDLAR)) >> 4;
1710
1711                         mdp->cur_rx = count;
1712                         mdp->dirty_rx = count;
1713                 }
1714                 sh_eth_write(ndev, EDRRR_R, EDRRR);
1715         }
1716
1717         *quota -= limit - boguscnt - 1;
1718
1719         return *quota <= 0;
1720 }
1721
1722 static void sh_eth_rcv_snd_disable(struct net_device *ndev)
1723 {
1724         /* disable tx and rx */
1725         sh_eth_modify(ndev, ECMR, ECMR_RE | ECMR_TE, 0);
1726 }
1727
1728 static void sh_eth_rcv_snd_enable(struct net_device *ndev)
1729 {
1730         /* enable tx and rx */
1731         sh_eth_modify(ndev, ECMR, ECMR_RE | ECMR_TE, ECMR_RE | ECMR_TE);
1732 }
1733
1734 /* E-MAC interrupt handler */
1735 static void sh_eth_emac_interrupt(struct net_device *ndev)
1736 {
1737         struct sh_eth_private *mdp = netdev_priv(ndev);
1738         u32 felic_stat;
1739         u32 link_stat;
1740
1741         felic_stat = sh_eth_read(ndev, ECSR) & sh_eth_read(ndev, ECSIPR);
1742         sh_eth_write(ndev, felic_stat, ECSR);   /* clear int */
1743         if (felic_stat & ECSR_ICD)
1744                 ndev->stats.tx_carrier_errors++;
1745         if (felic_stat & ECSR_MPD)
1746                 pm_wakeup_event(&mdp->pdev->dev, 0);
1747         if (felic_stat & ECSR_LCHNG) {
1748                 /* Link Changed */
1749                 if (mdp->cd->no_psr || mdp->no_ether_link)
1750                         return;
1751                 link_stat = sh_eth_read(ndev, PSR);
1752                 if (mdp->ether_link_active_low)
1753                         link_stat = ~link_stat;
1754                 if (!(link_stat & PSR_LMON)) {
1755                         sh_eth_rcv_snd_disable(ndev);
1756                 } else {
1757                         /* Link Up */
1758                         sh_eth_modify(ndev, EESIPR, EESIPR_ECIIP, 0);
1759                         /* clear int */
1760                         sh_eth_modify(ndev, ECSR, 0, 0);
1761                         sh_eth_modify(ndev, EESIPR, EESIPR_ECIIP, EESIPR_ECIIP);
1762                         /* enable tx and rx */
1763                         sh_eth_rcv_snd_enable(ndev);
1764                 }
1765         }
1766 }
1767
1768 /* error control function */
1769 static void sh_eth_error(struct net_device *ndev, u32 intr_status)
1770 {
1771         struct sh_eth_private *mdp = netdev_priv(ndev);
1772         u32 mask;
1773
1774         if (intr_status & EESR_TWB) {
1775                 /* Unused write back interrupt */
1776                 if (intr_status & EESR_TABT) {  /* Transmit Abort int */
1777                         ndev->stats.tx_aborted_errors++;
1778                         netif_err(mdp, tx_err, ndev, "Transmit Abort\n");
1779                 }
1780         }
1781
1782         if (intr_status & EESR_RABT) {
1783                 /* Receive Abort int */
1784                 if (intr_status & EESR_RFRMER) {
1785                         /* Receive Frame Overflow int */
1786                         ndev->stats.rx_frame_errors++;
1787                 }
1788         }
1789
1790         if (intr_status & EESR_TDE) {
1791                 /* Transmit Descriptor Empty int */
1792                 ndev->stats.tx_fifo_errors++;
1793                 netif_err(mdp, tx_err, ndev, "Transmit Descriptor Empty\n");
1794         }
1795
1796         if (intr_status & EESR_TFE) {
1797                 /* FIFO under flow */
1798                 ndev->stats.tx_fifo_errors++;
1799                 netif_err(mdp, tx_err, ndev, "Transmit FIFO Under flow\n");
1800         }
1801
1802         if (intr_status & EESR_RDE) {
1803                 /* Receive Descriptor Empty int */
1804                 ndev->stats.rx_over_errors++;
1805         }
1806
1807         if (intr_status & EESR_RFE) {
1808                 /* Receive FIFO Overflow int */
1809                 ndev->stats.rx_fifo_errors++;
1810         }
1811
1812         if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) {
1813                 /* Address Error */
1814                 ndev->stats.tx_fifo_errors++;
1815                 netif_err(mdp, tx_err, ndev, "Address Error\n");
1816         }
1817
1818         mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE;
1819         if (mdp->cd->no_ade)
1820                 mask &= ~EESR_ADE;
1821         if (intr_status & mask) {
1822                 /* Tx error */
1823                 u32 edtrr = sh_eth_read(ndev, EDTRR);
1824
1825                 /* dmesg */
1826                 netdev_err(ndev, "TX error. status=%8.8x cur_tx=%8.8x dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n",
1827                            intr_status, mdp->cur_tx, mdp->dirty_tx,
1828                            (u32)ndev->state, edtrr);
1829                 /* dirty buffer free */
1830                 sh_eth_tx_free(ndev, true);
1831
1832                 /* SH7712 BUG */
1833                 if (edtrr ^ mdp->cd->edtrr_trns) {
1834                         /* tx dma start */
1835                         sh_eth_write(ndev, mdp->cd->edtrr_trns, EDTRR);
1836                 }
1837                 /* wakeup */
1838                 netif_wake_queue(ndev);
1839         }
1840 }
1841
1842 static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
1843 {
1844         struct net_device *ndev = netdev;
1845         struct sh_eth_private *mdp = netdev_priv(ndev);
1846         struct sh_eth_cpu_data *cd = mdp->cd;
1847         irqreturn_t ret = IRQ_NONE;
1848         u32 intr_status, intr_enable;
1849
1850         spin_lock(&mdp->lock);
1851
1852         /* Get interrupt status */
1853         intr_status = sh_eth_read(ndev, EESR);
1854         /* Mask it with the interrupt mask, forcing ECI interrupt  to be always
1855          * enabled since it's the one that  comes  thru regardless of the mask,
1856          * and  we need to fully handle it  in sh_eth_emac_interrupt() in order
1857          * to quench it as it doesn't get cleared by just writing 1 to the  ECI
1858          * bit...
1859          */
1860         intr_enable = sh_eth_read(ndev, EESIPR);
1861         intr_status &= intr_enable | EESIPR_ECIIP;
1862         if (intr_status & (EESR_RX_CHECK | cd->tx_check | EESR_ECI |
1863                            cd->eesr_err_check))
1864                 ret = IRQ_HANDLED;
1865         else
1866                 goto out;
1867
1868         if (unlikely(!mdp->irq_enabled)) {
1869                 sh_eth_write(ndev, 0, EESIPR);
1870                 goto out;
1871         }
1872
1873         if (intr_status & EESR_RX_CHECK) {
1874                 if (napi_schedule_prep(&mdp->napi)) {
1875                         /* Mask Rx interrupts */
1876                         sh_eth_write(ndev, intr_enable & ~EESR_RX_CHECK,
1877                                      EESIPR);
1878                         __napi_schedule(&mdp->napi);
1879                 } else {
1880                         netdev_warn(ndev,
1881                                     "ignoring interrupt, status 0x%08x, mask 0x%08x.\n",
1882                                     intr_status, intr_enable);
1883                 }
1884         }
1885
1886         /* Tx Check */
1887         if (intr_status & cd->tx_check) {
1888                 /* Clear Tx interrupts */
1889                 sh_eth_write(ndev, intr_status & cd->tx_check, EESR);
1890
1891                 sh_eth_tx_free(ndev, true);
1892                 netif_wake_queue(ndev);
1893         }
1894
1895         /* E-MAC interrupt */
1896         if (intr_status & EESR_ECI)
1897                 sh_eth_emac_interrupt(ndev);
1898
1899         if (intr_status & cd->eesr_err_check) {
1900                 /* Clear error interrupts */
1901                 sh_eth_write(ndev, intr_status & cd->eesr_err_check, EESR);
1902
1903                 sh_eth_error(ndev, intr_status);
1904         }
1905
1906 out:
1907         spin_unlock(&mdp->lock);
1908
1909         return ret;
1910 }
1911
1912 static int sh_eth_poll(struct napi_struct *napi, int budget)
1913 {
1914         struct sh_eth_private *mdp = container_of(napi, struct sh_eth_private,
1915                                                   napi);
1916         struct net_device *ndev = napi->dev;
1917         int quota = budget;
1918         u32 intr_status;
1919
1920         for (;;) {
1921                 intr_status = sh_eth_read(ndev, EESR);
1922                 if (!(intr_status & EESR_RX_CHECK))
1923                         break;
1924                 /* Clear Rx interrupts */
1925                 sh_eth_write(ndev, intr_status & EESR_RX_CHECK, EESR);
1926
1927                 if (sh_eth_rx(ndev, intr_status, &quota))
1928                         goto out;
1929         }
1930
1931         napi_complete(napi);
1932
1933         /* Reenable Rx interrupts */
1934         if (mdp->irq_enabled)
1935                 sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
1936 out:
1937         return budget - quota;
1938 }
1939
1940 /* PHY state control function */
1941 static void sh_eth_adjust_link(struct net_device *ndev)
1942 {
1943         struct sh_eth_private *mdp = netdev_priv(ndev);
1944         struct phy_device *phydev = ndev->phydev;
1945         unsigned long flags;
1946         int new_state = 0;
1947
1948         spin_lock_irqsave(&mdp->lock, flags);
1949
1950         /* Disable TX and RX right over here, if E-MAC change is ignored */
1951         if (mdp->cd->no_psr || mdp->no_ether_link)
1952                 sh_eth_rcv_snd_disable(ndev);
1953
1954         if (phydev->link) {
1955                 if (phydev->duplex != mdp->duplex) {
1956                         new_state = 1;
1957                         mdp->duplex = phydev->duplex;
1958                         if (mdp->cd->set_duplex)
1959                                 mdp->cd->set_duplex(ndev);
1960                 }
1961
1962                 if (phydev->speed != mdp->speed) {
1963                         new_state = 1;
1964                         mdp->speed = phydev->speed;
1965                         if (mdp->cd->set_rate)
1966                                 mdp->cd->set_rate(ndev);
1967                 }
1968                 if (!mdp->link) {
1969                         sh_eth_modify(ndev, ECMR, ECMR_TXF, 0);
1970                         new_state = 1;
1971                         mdp->link = phydev->link;
1972                 }
1973         } else if (mdp->link) {
1974                 new_state = 1;
1975                 mdp->link = 0;
1976                 mdp->speed = 0;
1977                 mdp->duplex = -1;
1978         }
1979
1980         /* Enable TX and RX right over here, if E-MAC change is ignored */
1981         if ((mdp->cd->no_psr || mdp->no_ether_link) && phydev->link)
1982                 sh_eth_rcv_snd_enable(ndev);
1983
1984         spin_unlock_irqrestore(&mdp->lock, flags);
1985
1986         if (new_state && netif_msg_link(mdp))
1987                 phy_print_status(phydev);
1988 }
1989
1990 /* PHY init function */
1991 static int sh_eth_phy_init(struct net_device *ndev)
1992 {
1993         struct device_node *np = ndev->dev.parent->of_node;
1994         struct sh_eth_private *mdp = netdev_priv(ndev);
1995         struct phy_device *phydev;
1996
1997         mdp->link = 0;
1998         mdp->speed = 0;
1999         mdp->duplex = -1;
2000
2001         /* Try connect to PHY */
2002         if (np) {
2003                 struct device_node *pn;
2004
2005                 pn = of_parse_phandle(np, "phy-handle", 0);
2006                 phydev = of_phy_connect(ndev, pn,
2007                                         sh_eth_adjust_link, 0,
2008                                         mdp->phy_interface);
2009
2010                 of_node_put(pn);
2011                 if (!phydev)
2012                         phydev = ERR_PTR(-ENOENT);
2013         } else {
2014                 char phy_id[MII_BUS_ID_SIZE + 3];
2015
2016                 snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
2017                          mdp->mii_bus->id, mdp->phy_id);
2018
2019                 phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link,
2020                                      mdp->phy_interface);
2021         }
2022
2023         if (IS_ERR(phydev)) {
2024                 netdev_err(ndev, "failed to connect PHY\n");
2025                 return PTR_ERR(phydev);
2026         }
2027
2028         /* mask with MAC supported features */
2029         if (mdp->cd->register_type != SH_ETH_REG_GIGABIT)
2030                 phy_set_max_speed(phydev, SPEED_100);
2031
2032         /* Indicate that the MAC is responsible for managing PHY PM */
2033         phydev->mac_managed_pm = true;
2034         phy_attached_info(phydev);
2035
2036         return 0;
2037 }
2038
2039 /* PHY control start function */
2040 static int sh_eth_phy_start(struct net_device *ndev)
2041 {
2042         int ret;
2043
2044         ret = sh_eth_phy_init(ndev);
2045         if (ret)
2046                 return ret;
2047
2048         phy_start(ndev->phydev);
2049
2050         return 0;
2051 }
2052
2053 /* If it is ever necessary to increase SH_ETH_REG_DUMP_MAX_REGS, the
2054  * version must be bumped as well.  Just adding registers up to that
2055  * limit is fine, as long as the existing register indices don't
2056  * change.
2057  */
2058 #define SH_ETH_REG_DUMP_VERSION         1
2059 #define SH_ETH_REG_DUMP_MAX_REGS        256
2060
2061 static size_t __sh_eth_get_regs(struct net_device *ndev, u32 *buf)
2062 {
2063         struct sh_eth_private *mdp = netdev_priv(ndev);
2064         struct sh_eth_cpu_data *cd = mdp->cd;
2065         u32 *valid_map;
2066         size_t len;
2067
2068         BUILD_BUG_ON(SH_ETH_MAX_REGISTER_OFFSET > SH_ETH_REG_DUMP_MAX_REGS);
2069
2070         /* Dump starts with a bitmap that tells ethtool which
2071          * registers are defined for this chip.
2072          */
2073         len = DIV_ROUND_UP(SH_ETH_REG_DUMP_MAX_REGS, 32);
2074         if (buf) {
2075                 valid_map = buf;
2076                 buf += len;
2077         } else {
2078                 valid_map = NULL;
2079         }
2080
2081         /* Add a register to the dump, if it has a defined offset.
2082          * This automatically skips most undefined registers, but for
2083          * some it is also necessary to check a capability flag in
2084          * struct sh_eth_cpu_data.
2085          */
2086 #define mark_reg_valid(reg) valid_map[reg / 32] |= 1U << (reg % 32)
2087 #define add_reg_from(reg, read_expr) do {                               \
2088                 if (mdp->reg_offset[reg] != SH_ETH_OFFSET_INVALID) {    \
2089                         if (buf) {                                      \
2090                                 mark_reg_valid(reg);                    \
2091                                 *buf++ = read_expr;                     \
2092                         }                                               \
2093                         ++len;                                          \
2094                 }                                                       \
2095         } while (0)
2096 #define add_reg(reg) add_reg_from(reg, sh_eth_read(ndev, reg))
2097 #define add_tsu_reg(reg) add_reg_from(reg, sh_eth_tsu_read(mdp, reg))
2098
2099         add_reg(EDSR);
2100         add_reg(EDMR);
2101         add_reg(EDTRR);
2102         add_reg(EDRRR);
2103         add_reg(EESR);
2104         add_reg(EESIPR);
2105         add_reg(TDLAR);
2106         if (!cd->no_xdfar)
2107                 add_reg(TDFAR);
2108         add_reg(TDFXR);
2109         add_reg(TDFFR);
2110         add_reg(RDLAR);
2111         if (!cd->no_xdfar)
2112                 add_reg(RDFAR);
2113         add_reg(RDFXR);
2114         add_reg(RDFFR);
2115         add_reg(TRSCER);
2116         add_reg(RMFCR);
2117         add_reg(TFTR);
2118         add_reg(FDR);
2119         add_reg(RMCR);
2120         add_reg(TFUCR);
2121         add_reg(RFOCR);
2122         if (cd->rmiimode)
2123                 add_reg(RMIIMODE);
2124         add_reg(FCFTR);
2125         if (cd->rpadir)
2126                 add_reg(RPADIR);
2127         if (!cd->no_trimd)
2128                 add_reg(TRIMD);
2129         add_reg(ECMR);
2130         add_reg(ECSR);
2131         add_reg(ECSIPR);
2132         add_reg(PIR);
2133         if (!cd->no_psr)
2134                 add_reg(PSR);
2135         add_reg(RDMLR);
2136         add_reg(RFLR);
2137         add_reg(IPGR);
2138         if (cd->apr)
2139                 add_reg(APR);
2140         if (cd->mpr)
2141                 add_reg(MPR);
2142         add_reg(RFCR);
2143         add_reg(RFCF);
2144         if (cd->tpauser)
2145                 add_reg(TPAUSER);
2146         add_reg(TPAUSECR);
2147         if (cd->gecmr)
2148                 add_reg(GECMR);
2149         if (cd->bculr)
2150                 add_reg(BCULR);
2151         add_reg(MAHR);
2152         add_reg(MALR);
2153         if (!cd->no_tx_cntrs) {
2154                 add_reg(TROCR);
2155                 add_reg(CDCR);
2156                 add_reg(LCCR);
2157                 add_reg(CNDCR);
2158         }
2159         add_reg(CEFCR);
2160         add_reg(FRECR);
2161         add_reg(TSFRCR);
2162         add_reg(TLFRCR);
2163         if (cd->cexcr) {
2164                 add_reg(CERCR);
2165                 add_reg(CEECR);
2166         }
2167         add_reg(MAFCR);
2168         if (cd->rtrate)
2169                 add_reg(RTRATE);
2170         if (cd->csmr)
2171                 add_reg(CSMR);
2172         if (cd->select_mii)
2173                 add_reg(RMII_MII);
2174         if (cd->tsu) {
2175                 add_tsu_reg(ARSTR);
2176                 add_tsu_reg(TSU_CTRST);
2177                 if (cd->dual_port) {
2178                         add_tsu_reg(TSU_FWEN0);
2179                         add_tsu_reg(TSU_FWEN1);
2180                         add_tsu_reg(TSU_FCM);
2181                         add_tsu_reg(TSU_BSYSL0);
2182                         add_tsu_reg(TSU_BSYSL1);
2183                         add_tsu_reg(TSU_PRISL0);
2184                         add_tsu_reg(TSU_PRISL1);
2185                         add_tsu_reg(TSU_FWSL0);
2186                         add_tsu_reg(TSU_FWSL1);
2187                 }
2188                 add_tsu_reg(TSU_FWSLC);
2189                 if (cd->dual_port) {
2190                         add_tsu_reg(TSU_QTAGM0);
2191                         add_tsu_reg(TSU_QTAGM1);
2192                         add_tsu_reg(TSU_FWSR);
2193                         add_tsu_reg(TSU_FWINMK);
2194                         add_tsu_reg(TSU_ADQT0);
2195                         add_tsu_reg(TSU_ADQT1);
2196                         add_tsu_reg(TSU_VTAG0);
2197                         add_tsu_reg(TSU_VTAG1);
2198                 }
2199                 add_tsu_reg(TSU_ADSBSY);
2200                 add_tsu_reg(TSU_TEN);
2201                 add_tsu_reg(TSU_POST1);
2202                 add_tsu_reg(TSU_POST2);
2203                 add_tsu_reg(TSU_POST3);
2204                 add_tsu_reg(TSU_POST4);
2205                 /* This is the start of a table, not just a single register. */
2206                 if (buf) {
2207                         unsigned int i;
2208
2209                         mark_reg_valid(TSU_ADRH0);
2210                         for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES * 2; i++)
2211                                 *buf++ = ioread32(mdp->tsu_addr +
2212                                                   mdp->reg_offset[TSU_ADRH0] +
2213                                                   i * 4);
2214                 }
2215                 len += SH_ETH_TSU_CAM_ENTRIES * 2;
2216         }
2217
2218 #undef mark_reg_valid
2219 #undef add_reg_from
2220 #undef add_reg
2221 #undef add_tsu_reg
2222
2223         return len * 4;
2224 }
2225
2226 static int sh_eth_get_regs_len(struct net_device *ndev)
2227 {
2228         return __sh_eth_get_regs(ndev, NULL);
2229 }
2230
2231 static void sh_eth_get_regs(struct net_device *ndev, struct ethtool_regs *regs,
2232                             void *buf)
2233 {
2234         struct sh_eth_private *mdp = netdev_priv(ndev);
2235
2236         regs->version = SH_ETH_REG_DUMP_VERSION;
2237
2238         pm_runtime_get_sync(&mdp->pdev->dev);
2239         __sh_eth_get_regs(ndev, buf);
2240         pm_runtime_put_sync(&mdp->pdev->dev);
2241 }
2242
2243 static u32 sh_eth_get_msglevel(struct net_device *ndev)
2244 {
2245         struct sh_eth_private *mdp = netdev_priv(ndev);
2246         return mdp->msg_enable;
2247 }
2248
2249 static void sh_eth_set_msglevel(struct net_device *ndev, u32 value)
2250 {
2251         struct sh_eth_private *mdp = netdev_priv(ndev);
2252         mdp->msg_enable = value;
2253 }
2254
2255 static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = {
2256         "rx_current", "tx_current",
2257         "rx_dirty", "tx_dirty",
2258 };
2259 #define SH_ETH_STATS_LEN  ARRAY_SIZE(sh_eth_gstrings_stats)
2260
2261 static int sh_eth_get_sset_count(struct net_device *netdev, int sset)
2262 {
2263         switch (sset) {
2264         case ETH_SS_STATS:
2265                 return SH_ETH_STATS_LEN;
2266         default:
2267                 return -EOPNOTSUPP;
2268         }
2269 }
2270
2271 static void sh_eth_get_ethtool_stats(struct net_device *ndev,
2272                                      struct ethtool_stats *stats, u64 *data)
2273 {
2274         struct sh_eth_private *mdp = netdev_priv(ndev);
2275         int i = 0;
2276
2277         /* device-specific stats */
2278         data[i++] = mdp->cur_rx;
2279         data[i++] = mdp->cur_tx;
2280         data[i++] = mdp->dirty_rx;
2281         data[i++] = mdp->dirty_tx;
2282 }
2283
2284 static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
2285 {
2286         switch (stringset) {
2287         case ETH_SS_STATS:
2288                 memcpy(data, sh_eth_gstrings_stats,
2289                        sizeof(sh_eth_gstrings_stats));
2290                 break;
2291         }
2292 }
2293
2294 static void sh_eth_get_ringparam(struct net_device *ndev,
2295                                  struct ethtool_ringparam *ring,
2296                                  struct kernel_ethtool_ringparam *kernel_ring,
2297                                  struct netlink_ext_ack *extack)
2298 {
2299         struct sh_eth_private *mdp = netdev_priv(ndev);
2300
2301         ring->rx_max_pending = RX_RING_MAX;
2302         ring->tx_max_pending = TX_RING_MAX;
2303         ring->rx_pending = mdp->num_rx_ring;
2304         ring->tx_pending = mdp->num_tx_ring;
2305 }
2306
2307 static int sh_eth_set_ringparam(struct net_device *ndev,
2308                                 struct ethtool_ringparam *ring,
2309                                 struct kernel_ethtool_ringparam *kernel_ring,
2310                                 struct netlink_ext_ack *extack)
2311 {
2312         struct sh_eth_private *mdp = netdev_priv(ndev);
2313         int ret;
2314
2315         if (ring->tx_pending > TX_RING_MAX ||
2316             ring->rx_pending > RX_RING_MAX ||
2317             ring->tx_pending < TX_RING_MIN ||
2318             ring->rx_pending < RX_RING_MIN)
2319                 return -EINVAL;
2320         if (ring->rx_mini_pending || ring->rx_jumbo_pending)
2321                 return -EINVAL;
2322
2323         if (netif_running(ndev)) {
2324                 netif_device_detach(ndev);
2325                 netif_tx_disable(ndev);
2326
2327                 /* Serialise with the interrupt handler and NAPI, then
2328                  * disable interrupts.  We have to clear the
2329                  * irq_enabled flag first to ensure that interrupts
2330                  * won't be re-enabled.
2331                  */
2332                 mdp->irq_enabled = false;
2333                 synchronize_irq(ndev->irq);
2334                 napi_synchronize(&mdp->napi);
2335                 sh_eth_write(ndev, 0x0000, EESIPR);
2336
2337                 sh_eth_dev_exit(ndev);
2338
2339                 /* Free all the skbuffs in the Rx queue and the DMA buffers. */
2340                 sh_eth_ring_free(ndev);
2341         }
2342
2343         /* Set new parameters */
2344         mdp->num_rx_ring = ring->rx_pending;
2345         mdp->num_tx_ring = ring->tx_pending;
2346
2347         if (netif_running(ndev)) {
2348                 ret = sh_eth_ring_init(ndev);
2349                 if (ret < 0) {
2350                         netdev_err(ndev, "%s: sh_eth_ring_init failed.\n",
2351                                    __func__);
2352                         return ret;
2353                 }
2354                 ret = sh_eth_dev_init(ndev);
2355                 if (ret < 0) {
2356                         netdev_err(ndev, "%s: sh_eth_dev_init failed.\n",
2357                                    __func__);
2358                         return ret;
2359                 }
2360
2361                 netif_device_attach(ndev);
2362         }
2363
2364         return 0;
2365 }
2366
2367 static void sh_eth_get_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
2368 {
2369         struct sh_eth_private *mdp = netdev_priv(ndev);
2370
2371         wol->supported = 0;
2372         wol->wolopts = 0;
2373
2374         if (mdp->cd->magic) {
2375                 wol->supported = WAKE_MAGIC;
2376                 wol->wolopts = mdp->wol_enabled ? WAKE_MAGIC : 0;
2377         }
2378 }
2379
2380 static int sh_eth_set_wol(struct net_device *ndev, struct ethtool_wolinfo *wol)
2381 {
2382         struct sh_eth_private *mdp = netdev_priv(ndev);
2383
2384         if (!mdp->cd->magic || wol->wolopts & ~WAKE_MAGIC)
2385                 return -EOPNOTSUPP;
2386
2387         mdp->wol_enabled = !!(wol->wolopts & WAKE_MAGIC);
2388
2389         device_set_wakeup_enable(&mdp->pdev->dev, mdp->wol_enabled);
2390
2391         return 0;
2392 }
2393
2394 static const struct ethtool_ops sh_eth_ethtool_ops = {
2395         .get_regs_len   = sh_eth_get_regs_len,
2396         .get_regs       = sh_eth_get_regs,
2397         .nway_reset     = phy_ethtool_nway_reset,
2398         .get_msglevel   = sh_eth_get_msglevel,
2399         .set_msglevel   = sh_eth_set_msglevel,
2400         .get_link       = ethtool_op_get_link,
2401         .get_strings    = sh_eth_get_strings,
2402         .get_ethtool_stats  = sh_eth_get_ethtool_stats,
2403         .get_sset_count     = sh_eth_get_sset_count,
2404         .get_ringparam  = sh_eth_get_ringparam,
2405         .set_ringparam  = sh_eth_set_ringparam,
2406         .get_link_ksettings = phy_ethtool_get_link_ksettings,
2407         .set_link_ksettings = phy_ethtool_set_link_ksettings,
2408         .get_wol        = sh_eth_get_wol,
2409         .set_wol        = sh_eth_set_wol,
2410 };
2411
2412 /* network device open function */
2413 static int sh_eth_open(struct net_device *ndev)
2414 {
2415         struct sh_eth_private *mdp = netdev_priv(ndev);
2416         int ret;
2417
2418         pm_runtime_get_sync(&mdp->pdev->dev);
2419
2420         napi_enable(&mdp->napi);
2421
2422         ret = request_irq(ndev->irq, sh_eth_interrupt,
2423                           mdp->cd->irq_flags, ndev->name, ndev);
2424         if (ret) {
2425                 netdev_err(ndev, "Can not assign IRQ number\n");
2426                 goto out_napi_off;
2427         }
2428
2429         /* Descriptor set */
2430         ret = sh_eth_ring_init(ndev);
2431         if (ret)
2432                 goto out_free_irq;
2433
2434         /* device init */
2435         ret = sh_eth_dev_init(ndev);
2436         if (ret)
2437                 goto out_free_irq;
2438
2439         /* PHY control start*/
2440         ret = sh_eth_phy_start(ndev);
2441         if (ret)
2442                 goto out_free_irq;
2443
2444         netif_start_queue(ndev);
2445
2446         mdp->is_opened = 1;
2447
2448         return ret;
2449
2450 out_free_irq:
2451         free_irq(ndev->irq, ndev);
2452 out_napi_off:
2453         napi_disable(&mdp->napi);
2454         pm_runtime_put_sync(&mdp->pdev->dev);
2455         return ret;
2456 }
2457
2458 /* Timeout function */
2459 static void sh_eth_tx_timeout(struct net_device *ndev, unsigned int txqueue)
2460 {
2461         struct sh_eth_private *mdp = netdev_priv(ndev);
2462         struct sh_eth_rxdesc *rxdesc;
2463         int i;
2464
2465         netif_stop_queue(ndev);
2466
2467         netif_err(mdp, timer, ndev,
2468                   "transmit timed out, status %8.8x, resetting...\n",
2469                   sh_eth_read(ndev, EESR));
2470
2471         /* tx_errors count up */
2472         ndev->stats.tx_errors++;
2473
2474         /* Free all the skbuffs in the Rx queue. */
2475         for (i = 0; i < mdp->num_rx_ring; i++) {
2476                 rxdesc = &mdp->rx_ring[i];
2477                 rxdesc->status = cpu_to_le32(0);
2478                 rxdesc->addr = cpu_to_le32(0xBADF00D0);
2479                 dev_kfree_skb(mdp->rx_skbuff[i]);
2480                 mdp->rx_skbuff[i] = NULL;
2481         }
2482         for (i = 0; i < mdp->num_tx_ring; i++) {
2483                 dev_kfree_skb(mdp->tx_skbuff[i]);
2484                 mdp->tx_skbuff[i] = NULL;
2485         }
2486
2487         /* device init */
2488         sh_eth_dev_init(ndev);
2489
2490         netif_start_queue(ndev);
2491 }
2492
2493 /* Packet transmit function */
2494 static netdev_tx_t sh_eth_start_xmit(struct sk_buff *skb,
2495                                      struct net_device *ndev)
2496 {
2497         struct sh_eth_private *mdp = netdev_priv(ndev);
2498         struct sh_eth_txdesc *txdesc;
2499         dma_addr_t dma_addr;
2500         u32 entry;
2501         unsigned long flags;
2502
2503         spin_lock_irqsave(&mdp->lock, flags);
2504         if ((mdp->cur_tx - mdp->dirty_tx) >= (mdp->num_tx_ring - 4)) {
2505                 if (!sh_eth_tx_free(ndev, true)) {
2506                         netif_warn(mdp, tx_queued, ndev, "TxFD exhausted.\n");
2507                         netif_stop_queue(ndev);
2508                         spin_unlock_irqrestore(&mdp->lock, flags);
2509                         return NETDEV_TX_BUSY;
2510                 }
2511         }
2512         spin_unlock_irqrestore(&mdp->lock, flags);
2513
2514         if (skb_put_padto(skb, ETH_ZLEN))
2515                 return NETDEV_TX_OK;
2516
2517         entry = mdp->cur_tx % mdp->num_tx_ring;
2518         mdp->tx_skbuff[entry] = skb;
2519         txdesc = &mdp->tx_ring[entry];
2520         /* soft swap. */
2521         if (!mdp->cd->hw_swap)
2522                 sh_eth_soft_swap(PTR_ALIGN(skb->data, 4), skb->len + 2);
2523         dma_addr = dma_map_single(&mdp->pdev->dev, skb->data, skb->len,
2524                                   DMA_TO_DEVICE);
2525         if (dma_mapping_error(&mdp->pdev->dev, dma_addr)) {
2526                 kfree_skb(skb);
2527                 return NETDEV_TX_OK;
2528         }
2529         txdesc->addr = cpu_to_le32(dma_addr);
2530         txdesc->len  = cpu_to_le32(skb->len << 16);
2531
2532         dma_wmb(); /* TACT bit must be set after all the above writes */
2533         if (entry >= mdp->num_tx_ring - 1)
2534                 txdesc->status |= cpu_to_le32(TD_TACT | TD_TDLE);
2535         else
2536                 txdesc->status |= cpu_to_le32(TD_TACT);
2537
2538         wmb(); /* cur_tx must be incremented after TACT bit was set */
2539         mdp->cur_tx++;
2540
2541         if (!(sh_eth_read(ndev, EDTRR) & mdp->cd->edtrr_trns))
2542                 sh_eth_write(ndev, mdp->cd->edtrr_trns, EDTRR);
2543
2544         return NETDEV_TX_OK;
2545 }
2546
2547 /* The statistics registers have write-clear behaviour, which means we
2548  * will lose any increment between the read and write.  We mitigate
2549  * this by only clearing when we read a non-zero value, so we will
2550  * never falsely report a total of zero.
2551  */
2552 static void
2553 sh_eth_update_stat(struct net_device *ndev, unsigned long *stat, int reg)
2554 {
2555         u32 delta = sh_eth_read(ndev, reg);
2556
2557         if (delta) {
2558                 *stat += delta;
2559                 sh_eth_write(ndev, 0, reg);
2560         }
2561 }
2562
2563 static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev)
2564 {
2565         struct sh_eth_private *mdp = netdev_priv(ndev);
2566
2567         if (mdp->cd->no_tx_cntrs)
2568                 return &ndev->stats;
2569
2570         if (!mdp->is_opened)
2571                 return &ndev->stats;
2572
2573         sh_eth_update_stat(ndev, &ndev->stats.tx_dropped, TROCR);
2574         sh_eth_update_stat(ndev, &ndev->stats.collisions, CDCR);
2575         sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors, LCCR);
2576
2577         if (mdp->cd->cexcr) {
2578                 sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors,
2579                                    CERCR);
2580                 sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors,
2581                                    CEECR);
2582         } else {
2583                 sh_eth_update_stat(ndev, &ndev->stats.tx_carrier_errors,
2584                                    CNDCR);
2585         }
2586
2587         return &ndev->stats;
2588 }
2589
2590 /* device close function */
2591 static int sh_eth_close(struct net_device *ndev)
2592 {
2593         struct sh_eth_private *mdp = netdev_priv(ndev);
2594
2595         netif_stop_queue(ndev);
2596
2597         /* Serialise with the interrupt handler and NAPI, then disable
2598          * interrupts.  We have to clear the irq_enabled flag first to
2599          * ensure that interrupts won't be re-enabled.
2600          */
2601         mdp->irq_enabled = false;
2602         synchronize_irq(ndev->irq);
2603         napi_disable(&mdp->napi);
2604         sh_eth_write(ndev, 0x0000, EESIPR);
2605
2606         sh_eth_dev_exit(ndev);
2607
2608         /* PHY Disconnect */
2609         if (ndev->phydev) {
2610                 phy_stop(ndev->phydev);
2611                 phy_disconnect(ndev->phydev);
2612         }
2613
2614         free_irq(ndev->irq, ndev);
2615
2616         /* Free all the skbuffs in the Rx queue and the DMA buffer. */
2617         sh_eth_ring_free(ndev);
2618
2619         mdp->is_opened = 0;
2620
2621         pm_runtime_put(&mdp->pdev->dev);
2622
2623         return 0;
2624 }
2625
2626 static int sh_eth_change_mtu(struct net_device *ndev, int new_mtu)
2627 {
2628         if (netif_running(ndev))
2629                 return -EBUSY;
2630
2631         ndev->mtu = new_mtu;
2632         netdev_update_features(ndev);
2633
2634         return 0;
2635 }
2636
2637 /* For TSU_POSTn. Please refer to the manual about this (strange) bitfields */
2638 static u32 sh_eth_tsu_get_post_mask(int entry)
2639 {
2640         return 0x0f << (28 - ((entry % 8) * 4));
2641 }
2642
2643 static u32 sh_eth_tsu_get_post_bit(struct sh_eth_private *mdp, int entry)
2644 {
2645         return (0x08 >> (mdp->port << 1)) << (28 - ((entry % 8) * 4));
2646 }
2647
2648 static void sh_eth_tsu_enable_cam_entry_post(struct net_device *ndev,
2649                                              int entry)
2650 {
2651         struct sh_eth_private *mdp = netdev_priv(ndev);
2652         int reg = TSU_POST1 + entry / 8;
2653         u32 tmp;
2654
2655         tmp = sh_eth_tsu_read(mdp, reg);
2656         sh_eth_tsu_write(mdp, tmp | sh_eth_tsu_get_post_bit(mdp, entry), reg);
2657 }
2658
2659 static bool sh_eth_tsu_disable_cam_entry_post(struct net_device *ndev,
2660                                               int entry)
2661 {
2662         struct sh_eth_private *mdp = netdev_priv(ndev);
2663         int reg = TSU_POST1 + entry / 8;
2664         u32 post_mask, ref_mask, tmp;
2665
2666         post_mask = sh_eth_tsu_get_post_mask(entry);
2667         ref_mask = sh_eth_tsu_get_post_bit(mdp, entry) & ~post_mask;
2668
2669         tmp = sh_eth_tsu_read(mdp, reg);
2670         sh_eth_tsu_write(mdp, tmp & ~post_mask, reg);
2671
2672         /* If other port enables, the function returns "true" */
2673         return tmp & ref_mask;
2674 }
2675
2676 static int sh_eth_tsu_busy(struct net_device *ndev)
2677 {
2678         int timeout = SH_ETH_TSU_TIMEOUT_MS * 100;
2679         struct sh_eth_private *mdp = netdev_priv(ndev);
2680
2681         while ((sh_eth_tsu_read(mdp, TSU_ADSBSY) & TSU_ADSBSY_0)) {
2682                 udelay(10);
2683                 timeout--;
2684                 if (timeout <= 0) {
2685                         netdev_err(ndev, "%s: timeout\n", __func__);
2686                         return -ETIMEDOUT;
2687                 }
2688         }
2689
2690         return 0;
2691 }
2692
2693 static int sh_eth_tsu_write_entry(struct net_device *ndev, u16 offset,
2694                                   const u8 *addr)
2695 {
2696         struct sh_eth_private *mdp = netdev_priv(ndev);
2697         u32 val;
2698
2699         val = addr[0] << 24 | addr[1] << 16 | addr[2] << 8 | addr[3];
2700         iowrite32(val, mdp->tsu_addr + offset);
2701         if (sh_eth_tsu_busy(ndev) < 0)
2702                 return -EBUSY;
2703
2704         val = addr[4] << 8 | addr[5];
2705         iowrite32(val, mdp->tsu_addr + offset + 4);
2706         if (sh_eth_tsu_busy(ndev) < 0)
2707                 return -EBUSY;
2708
2709         return 0;
2710 }
2711
2712 static void sh_eth_tsu_read_entry(struct net_device *ndev, u16 offset, u8 *addr)
2713 {
2714         struct sh_eth_private *mdp = netdev_priv(ndev);
2715         u32 val;
2716
2717         val = ioread32(mdp->tsu_addr + offset);
2718         addr[0] = (val >> 24) & 0xff;
2719         addr[1] = (val >> 16) & 0xff;
2720         addr[2] = (val >> 8) & 0xff;
2721         addr[3] = val & 0xff;
2722         val = ioread32(mdp->tsu_addr + offset + 4);
2723         addr[4] = (val >> 8) & 0xff;
2724         addr[5] = val & 0xff;
2725 }
2726
2727
2728 static int sh_eth_tsu_find_entry(struct net_device *ndev, const u8 *addr)
2729 {
2730         struct sh_eth_private *mdp = netdev_priv(ndev);
2731         u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
2732         int i;
2733         u8 c_addr[ETH_ALEN];
2734
2735         for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) {
2736                 sh_eth_tsu_read_entry(ndev, reg_offset, c_addr);
2737                 if (ether_addr_equal(addr, c_addr))
2738                         return i;
2739         }
2740
2741         return -ENOENT;
2742 }
2743
2744 static int sh_eth_tsu_find_empty(struct net_device *ndev)
2745 {
2746         u8 blank[ETH_ALEN];
2747         int entry;
2748
2749         memset(blank, 0, sizeof(blank));
2750         entry = sh_eth_tsu_find_entry(ndev, blank);
2751         return (entry < 0) ? -ENOMEM : entry;
2752 }
2753
2754 static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev,
2755                                               int entry)
2756 {
2757         struct sh_eth_private *mdp = netdev_priv(ndev);
2758         u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
2759         int ret;
2760         u8 blank[ETH_ALEN];
2761
2762         sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) &
2763                          ~(1 << (31 - entry)), TSU_TEN);
2764
2765         memset(blank, 0, sizeof(blank));
2766         ret = sh_eth_tsu_write_entry(ndev, reg_offset + entry * 8, blank);
2767         if (ret < 0)
2768                 return ret;
2769         return 0;
2770 }
2771
2772 static int sh_eth_tsu_add_entry(struct net_device *ndev, const u8 *addr)
2773 {
2774         struct sh_eth_private *mdp = netdev_priv(ndev);
2775         u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
2776         int i, ret;
2777
2778         if (!mdp->cd->tsu)
2779                 return 0;
2780
2781         i = sh_eth_tsu_find_entry(ndev, addr);
2782         if (i < 0) {
2783                 /* No entry found, create one */
2784                 i = sh_eth_tsu_find_empty(ndev);
2785                 if (i < 0)
2786                         return -ENOMEM;
2787                 ret = sh_eth_tsu_write_entry(ndev, reg_offset + i * 8, addr);
2788                 if (ret < 0)
2789                         return ret;
2790
2791                 /* Enable the entry */
2792                 sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) |
2793                                  (1 << (31 - i)), TSU_TEN);
2794         }
2795
2796         /* Entry found or created, enable POST */
2797         sh_eth_tsu_enable_cam_entry_post(ndev, i);
2798
2799         return 0;
2800 }
2801
2802 static int sh_eth_tsu_del_entry(struct net_device *ndev, const u8 *addr)
2803 {
2804         struct sh_eth_private *mdp = netdev_priv(ndev);
2805         int i, ret;
2806
2807         if (!mdp->cd->tsu)
2808                 return 0;
2809
2810         i = sh_eth_tsu_find_entry(ndev, addr);
2811         if (i) {
2812                 /* Entry found */
2813                 if (sh_eth_tsu_disable_cam_entry_post(ndev, i))
2814                         goto done;
2815
2816                 /* Disable the entry if both ports was disabled */
2817                 ret = sh_eth_tsu_disable_cam_entry_table(ndev, i);
2818                 if (ret < 0)
2819                         return ret;
2820         }
2821 done:
2822         return 0;
2823 }
2824
2825 static int sh_eth_tsu_purge_all(struct net_device *ndev)
2826 {
2827         struct sh_eth_private *mdp = netdev_priv(ndev);
2828         int i, ret;
2829
2830         if (!mdp->cd->tsu)
2831                 return 0;
2832
2833         for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++) {
2834                 if (sh_eth_tsu_disable_cam_entry_post(ndev, i))
2835                         continue;
2836
2837                 /* Disable the entry if both ports was disabled */
2838                 ret = sh_eth_tsu_disable_cam_entry_table(ndev, i);
2839                 if (ret < 0)
2840                         return ret;
2841         }
2842
2843         return 0;
2844 }
2845
2846 static void sh_eth_tsu_purge_mcast(struct net_device *ndev)
2847 {
2848         struct sh_eth_private *mdp = netdev_priv(ndev);
2849         u16 reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0);
2850         u8 addr[ETH_ALEN];
2851         int i;
2852
2853         if (!mdp->cd->tsu)
2854                 return;
2855
2856         for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) {
2857                 sh_eth_tsu_read_entry(ndev, reg_offset, addr);
2858                 if (is_multicast_ether_addr(addr))
2859                         sh_eth_tsu_del_entry(ndev, addr);
2860         }
2861 }
2862
2863 /* Update promiscuous flag and multicast filter */
2864 static void sh_eth_set_rx_mode(struct net_device *ndev)
2865 {
2866         struct sh_eth_private *mdp = netdev_priv(ndev);
2867         u32 ecmr_bits;
2868         int mcast_all = 0;
2869         unsigned long flags;
2870
2871         spin_lock_irqsave(&mdp->lock, flags);
2872         /* Initial condition is MCT = 1, PRM = 0.
2873          * Depending on ndev->flags, set PRM or clear MCT
2874          */
2875         ecmr_bits = sh_eth_read(ndev, ECMR) & ~ECMR_PRM;
2876         if (mdp->cd->tsu)
2877                 ecmr_bits |= ECMR_MCT;
2878
2879         if (!(ndev->flags & IFF_MULTICAST)) {
2880                 sh_eth_tsu_purge_mcast(ndev);
2881                 mcast_all = 1;
2882         }
2883         if (ndev->flags & IFF_ALLMULTI) {
2884                 sh_eth_tsu_purge_mcast(ndev);
2885                 ecmr_bits &= ~ECMR_MCT;
2886                 mcast_all = 1;
2887         }
2888
2889         if (ndev->flags & IFF_PROMISC) {
2890                 sh_eth_tsu_purge_all(ndev);
2891                 ecmr_bits = (ecmr_bits & ~ECMR_MCT) | ECMR_PRM;
2892         } else if (mdp->cd->tsu) {
2893                 struct netdev_hw_addr *ha;
2894                 netdev_for_each_mc_addr(ha, ndev) {
2895                         if (mcast_all && is_multicast_ether_addr(ha->addr))
2896                                 continue;
2897
2898                         if (sh_eth_tsu_add_entry(ndev, ha->addr) < 0) {
2899                                 if (!mcast_all) {
2900                                         sh_eth_tsu_purge_mcast(ndev);
2901                                         ecmr_bits &= ~ECMR_MCT;
2902                                         mcast_all = 1;
2903                                 }
2904                         }
2905                 }
2906         }
2907
2908         /* update the ethernet mode */
2909         sh_eth_write(ndev, ecmr_bits, ECMR);
2910
2911         spin_unlock_irqrestore(&mdp->lock, flags);
2912 }
2913
2914 static void sh_eth_set_rx_csum(struct net_device *ndev, bool enable)
2915 {
2916         struct sh_eth_private *mdp = netdev_priv(ndev);
2917         unsigned long flags;
2918
2919         spin_lock_irqsave(&mdp->lock, flags);
2920
2921         /* Disable TX and RX */
2922         sh_eth_rcv_snd_disable(ndev);
2923
2924         /* Modify RX Checksum setting */
2925         sh_eth_modify(ndev, ECMR, ECMR_RCSC, enable ? ECMR_RCSC : 0);
2926
2927         /* Enable TX and RX */
2928         sh_eth_rcv_snd_enable(ndev);
2929
2930         spin_unlock_irqrestore(&mdp->lock, flags);
2931 }
2932
2933 static int sh_eth_set_features(struct net_device *ndev,
2934                                netdev_features_t features)
2935 {
2936         netdev_features_t changed = ndev->features ^ features;
2937         struct sh_eth_private *mdp = netdev_priv(ndev);
2938
2939         if (changed & NETIF_F_RXCSUM && mdp->cd->rx_csum)
2940                 sh_eth_set_rx_csum(ndev, features & NETIF_F_RXCSUM);
2941
2942         ndev->features = features;
2943
2944         return 0;
2945 }
2946
2947 static int sh_eth_get_vtag_index(struct sh_eth_private *mdp)
2948 {
2949         if (!mdp->port)
2950                 return TSU_VTAG0;
2951         else
2952                 return TSU_VTAG1;
2953 }
2954
2955 static int sh_eth_vlan_rx_add_vid(struct net_device *ndev,
2956                                   __be16 proto, u16 vid)
2957 {
2958         struct sh_eth_private *mdp = netdev_priv(ndev);
2959         int vtag_reg_index = sh_eth_get_vtag_index(mdp);
2960
2961         if (unlikely(!mdp->cd->tsu))
2962                 return -EPERM;
2963
2964         /* No filtering if vid = 0 */
2965         if (!vid)
2966                 return 0;
2967
2968         mdp->vlan_num_ids++;
2969
2970         /* The controller has one VLAN tag HW filter. So, if the filter is
2971          * already enabled, the driver disables it and the filte
2972          */
2973         if (mdp->vlan_num_ids > 1) {
2974                 /* disable VLAN filter */
2975                 sh_eth_tsu_write(mdp, 0, vtag_reg_index);
2976                 return 0;
2977         }
2978
2979         sh_eth_tsu_write(mdp, TSU_VTAG_ENABLE | (vid & TSU_VTAG_VID_MASK),
2980                          vtag_reg_index);
2981
2982         return 0;
2983 }
2984
2985 static int sh_eth_vlan_rx_kill_vid(struct net_device *ndev,
2986                                    __be16 proto, u16 vid)
2987 {
2988         struct sh_eth_private *mdp = netdev_priv(ndev);
2989         int vtag_reg_index = sh_eth_get_vtag_index(mdp);
2990
2991         if (unlikely(!mdp->cd->tsu))
2992                 return -EPERM;
2993
2994         /* No filtering if vid = 0 */
2995         if (!vid)
2996                 return 0;
2997
2998         mdp->vlan_num_ids--;
2999         sh_eth_tsu_write(mdp, 0, vtag_reg_index);
3000
3001         return 0;
3002 }
3003
3004 /* SuperH's TSU register init function */
3005 static void sh_eth_tsu_init(struct sh_eth_private *mdp)
3006 {
3007         if (!mdp->cd->dual_port) {
3008                 sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */
3009                 sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL,
3010                                  TSU_FWSLC);    /* Enable POST registers */
3011                 return;
3012         }
3013
3014         sh_eth_tsu_write(mdp, 0, TSU_FWEN0);    /* Disable forward(0->1) */
3015         sh_eth_tsu_write(mdp, 0, TSU_FWEN1);    /* Disable forward(1->0) */
3016         sh_eth_tsu_write(mdp, 0, TSU_FCM);      /* forward fifo 3k-3k */
3017         sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0);
3018         sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1);
3019         sh_eth_tsu_write(mdp, 0, TSU_PRISL0);
3020         sh_eth_tsu_write(mdp, 0, TSU_PRISL1);
3021         sh_eth_tsu_write(mdp, 0, TSU_FWSL0);
3022         sh_eth_tsu_write(mdp, 0, TSU_FWSL1);
3023         sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC);
3024         sh_eth_tsu_write(mdp, 0, TSU_QTAGM0);   /* Disable QTAG(0->1) */
3025         sh_eth_tsu_write(mdp, 0, TSU_QTAGM1);   /* Disable QTAG(1->0) */
3026         sh_eth_tsu_write(mdp, 0, TSU_FWSR);     /* all interrupt status clear */
3027         sh_eth_tsu_write(mdp, 0, TSU_FWINMK);   /* Disable all interrupt */
3028         sh_eth_tsu_write(mdp, 0, TSU_TEN);      /* Disable all CAM entry */
3029         sh_eth_tsu_write(mdp, 0, TSU_POST1);    /* Disable CAM entry [ 0- 7] */
3030         sh_eth_tsu_write(mdp, 0, TSU_POST2);    /* Disable CAM entry [ 8-15] */
3031         sh_eth_tsu_write(mdp, 0, TSU_POST3);    /* Disable CAM entry [16-23] */
3032         sh_eth_tsu_write(mdp, 0, TSU_POST4);    /* Disable CAM entry [24-31] */
3033 }
3034
3035 /* MDIO bus release function */
3036 static int sh_mdio_release(struct sh_eth_private *mdp)
3037 {
3038         /* unregister mdio bus */
3039         mdiobus_unregister(mdp->mii_bus);
3040
3041         /* free bitbang info */
3042         free_mdio_bitbang(mdp->mii_bus);
3043
3044         return 0;
3045 }
3046
3047 static int sh_mdiobb_read(struct mii_bus *bus, int phy, int reg)
3048 {
3049         int res;
3050
3051         pm_runtime_get_sync(bus->parent);
3052         res = mdiobb_read(bus, phy, reg);
3053         pm_runtime_put(bus->parent);
3054
3055         return res;
3056 }
3057
3058 static int sh_mdiobb_write(struct mii_bus *bus, int phy, int reg, u16 val)
3059 {
3060         int res;
3061
3062         pm_runtime_get_sync(bus->parent);
3063         res = mdiobb_write(bus, phy, reg, val);
3064         pm_runtime_put(bus->parent);
3065
3066         return res;
3067 }
3068
3069 /* MDIO bus init function */
3070 static int sh_mdio_init(struct sh_eth_private *mdp,
3071                         struct sh_eth_plat_data *pd)
3072 {
3073         int ret;
3074         struct bb_info *bitbang;
3075         struct platform_device *pdev = mdp->pdev;
3076         struct device *dev = &mdp->pdev->dev;
3077
3078         /* create bit control struct for PHY */
3079         bitbang = devm_kzalloc(dev, sizeof(struct bb_info), GFP_KERNEL);
3080         if (!bitbang)
3081                 return -ENOMEM;
3082
3083         /* bitbang init */
3084         bitbang->addr = mdp->addr + mdp->reg_offset[PIR];
3085         bitbang->set_gate = pd->set_mdio_gate;
3086         bitbang->ctrl.ops = &bb_ops;
3087
3088         /* MII controller setting */
3089         mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
3090         if (!mdp->mii_bus)
3091                 return -ENOMEM;
3092
3093         /* Wrap accessors with Runtime PM-aware ops */
3094         mdp->mii_bus->read = sh_mdiobb_read;
3095         mdp->mii_bus->write = sh_mdiobb_write;
3096
3097         /* Hook up MII support for ethtool */
3098         mdp->mii_bus->name = "sh_mii";
3099         mdp->mii_bus->parent = dev;
3100         snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
3101                  pdev->name, pdev->id);
3102
3103         /* register MDIO bus */
3104         if (pd->phy_irq > 0)
3105                 mdp->mii_bus->irq[pd->phy] = pd->phy_irq;
3106
3107         ret = of_mdiobus_register(mdp->mii_bus, dev->of_node);
3108         if (ret)
3109                 goto out_free_bus;
3110
3111         return 0;
3112
3113 out_free_bus:
3114         free_mdio_bitbang(mdp->mii_bus);
3115         return ret;
3116 }
3117
3118 static const u16 *sh_eth_get_register_offset(int register_type)
3119 {
3120         const u16 *reg_offset = NULL;
3121
3122         switch (register_type) {
3123         case SH_ETH_REG_GIGABIT:
3124                 reg_offset = sh_eth_offset_gigabit;
3125                 break;
3126         case SH_ETH_REG_FAST_RCAR:
3127                 reg_offset = sh_eth_offset_fast_rcar;
3128                 break;
3129         case SH_ETH_REG_FAST_SH4:
3130                 reg_offset = sh_eth_offset_fast_sh4;
3131                 break;
3132         case SH_ETH_REG_FAST_SH3_SH2:
3133                 reg_offset = sh_eth_offset_fast_sh3_sh2;
3134                 break;
3135         }
3136
3137         return reg_offset;
3138 }
3139
3140 static const struct net_device_ops sh_eth_netdev_ops = {
3141         .ndo_open               = sh_eth_open,
3142         .ndo_stop               = sh_eth_close,
3143         .ndo_start_xmit         = sh_eth_start_xmit,
3144         .ndo_get_stats          = sh_eth_get_stats,
3145         .ndo_set_rx_mode        = sh_eth_set_rx_mode,
3146         .ndo_tx_timeout         = sh_eth_tx_timeout,
3147         .ndo_eth_ioctl          = phy_do_ioctl_running,
3148         .ndo_change_mtu         = sh_eth_change_mtu,
3149         .ndo_validate_addr      = eth_validate_addr,
3150         .ndo_set_mac_address    = eth_mac_addr,
3151         .ndo_set_features       = sh_eth_set_features,
3152 };
3153
3154 static const struct net_device_ops sh_eth_netdev_ops_tsu = {
3155         .ndo_open               = sh_eth_open,
3156         .ndo_stop               = sh_eth_close,
3157         .ndo_start_xmit         = sh_eth_start_xmit,
3158         .ndo_get_stats          = sh_eth_get_stats,
3159         .ndo_set_rx_mode        = sh_eth_set_rx_mode,
3160         .ndo_vlan_rx_add_vid    = sh_eth_vlan_rx_add_vid,
3161         .ndo_vlan_rx_kill_vid   = sh_eth_vlan_rx_kill_vid,
3162         .ndo_tx_timeout         = sh_eth_tx_timeout,
3163         .ndo_eth_ioctl          = phy_do_ioctl_running,
3164         .ndo_change_mtu         = sh_eth_change_mtu,
3165         .ndo_validate_addr      = eth_validate_addr,
3166         .ndo_set_mac_address    = eth_mac_addr,
3167         .ndo_set_features       = sh_eth_set_features,
3168 };
3169
3170 #ifdef CONFIG_OF
3171 static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
3172 {
3173         struct device_node *np = dev->of_node;
3174         struct sh_eth_plat_data *pdata;
3175         phy_interface_t interface;
3176         int ret;
3177
3178         pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
3179         if (!pdata)
3180                 return NULL;
3181
3182         ret = of_get_phy_mode(np, &interface);
3183         if (ret)
3184                 return NULL;
3185         pdata->phy_interface = interface;
3186
3187         of_get_mac_address(np, pdata->mac_addr);
3188
3189         pdata->no_ether_link =
3190                 of_property_read_bool(np, "renesas,no-ether-link");
3191         pdata->ether_link_active_low =
3192                 of_property_read_bool(np, "renesas,ether-link-active-low");
3193
3194         return pdata;
3195 }
3196
3197 static const struct of_device_id sh_eth_match_table[] = {
3198         { .compatible = "renesas,gether-r8a7740", .data = &r8a7740_data },
3199         { .compatible = "renesas,ether-r8a7743", .data = &rcar_gen2_data },
3200         { .compatible = "renesas,ether-r8a7745", .data = &rcar_gen2_data },
3201         { .compatible = "renesas,ether-r8a7778", .data = &rcar_gen1_data },
3202         { .compatible = "renesas,ether-r8a7779", .data = &rcar_gen1_data },
3203         { .compatible = "renesas,ether-r8a7790", .data = &rcar_gen2_data },
3204         { .compatible = "renesas,ether-r8a7791", .data = &rcar_gen2_data },
3205         { .compatible = "renesas,ether-r8a7793", .data = &rcar_gen2_data },
3206         { .compatible = "renesas,ether-r8a7794", .data = &rcar_gen2_data },
3207         { .compatible = "renesas,gether-r8a77980", .data = &r8a77980_data },
3208         { .compatible = "renesas,ether-r7s72100", .data = &r7s72100_data },
3209         { .compatible = "renesas,ether-r7s9210", .data = &r7s9210_data },
3210         { .compatible = "renesas,rcar-gen1-ether", .data = &rcar_gen1_data },
3211         { .compatible = "renesas,rcar-gen2-ether", .data = &rcar_gen2_data },
3212         { }
3213 };
3214 MODULE_DEVICE_TABLE(of, sh_eth_match_table);
3215 #else
3216 static inline struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
3217 {
3218         return NULL;
3219 }
3220 #endif
3221
3222 static int sh_eth_drv_probe(struct platform_device *pdev)
3223 {
3224         struct resource *res;
3225         struct sh_eth_plat_data *pd = dev_get_platdata(&pdev->dev);
3226         const struct platform_device_id *id = platform_get_device_id(pdev);
3227         struct sh_eth_private *mdp;
3228         struct net_device *ndev;
3229         int ret;
3230
3231         ndev = alloc_etherdev(sizeof(struct sh_eth_private));
3232         if (!ndev)
3233                 return -ENOMEM;
3234
3235         pm_runtime_enable(&pdev->dev);
3236         pm_runtime_get_sync(&pdev->dev);
3237
3238         ret = platform_get_irq(pdev, 0);
3239         if (ret < 0)
3240                 goto out_release;
3241         ndev->irq = ret;
3242
3243         SET_NETDEV_DEV(ndev, &pdev->dev);
3244
3245         mdp = netdev_priv(ndev);
3246         mdp->num_tx_ring = TX_RING_SIZE;
3247         mdp->num_rx_ring = RX_RING_SIZE;
3248         mdp->addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
3249         if (IS_ERR(mdp->addr)) {
3250                 ret = PTR_ERR(mdp->addr);
3251                 goto out_release;
3252         }
3253
3254         ndev->base_addr = res->start;
3255
3256         spin_lock_init(&mdp->lock);
3257         mdp->pdev = pdev;
3258
3259         if (pdev->dev.of_node)
3260                 pd = sh_eth_parse_dt(&pdev->dev);
3261         if (!pd) {
3262                 dev_err(&pdev->dev, "no platform data\n");
3263                 ret = -EINVAL;
3264                 goto out_release;
3265         }
3266
3267         /* get PHY ID */
3268         mdp->phy_id = pd->phy;
3269         mdp->phy_interface = pd->phy_interface;
3270         mdp->no_ether_link = pd->no_ether_link;
3271         mdp->ether_link_active_low = pd->ether_link_active_low;
3272
3273         /* set cpu data */
3274         if (id)
3275                 mdp->cd = (struct sh_eth_cpu_data *)id->driver_data;
3276         else
3277                 mdp->cd = (struct sh_eth_cpu_data *)of_device_get_match_data(&pdev->dev);
3278
3279         mdp->reg_offset = sh_eth_get_register_offset(mdp->cd->register_type);
3280         if (!mdp->reg_offset) {
3281                 dev_err(&pdev->dev, "Unknown register type (%d)\n",
3282                         mdp->cd->register_type);
3283                 ret = -EINVAL;
3284                 goto out_release;
3285         }
3286         sh_eth_set_default_cpu_data(mdp->cd);
3287
3288         /* User's manual states max MTU should be 2048 but due to the
3289          * alignment calculations in sh_eth_ring_init() the practical
3290          * MTU is a bit less. Maybe this can be optimized some more.
3291          */
3292         ndev->max_mtu = 2000 - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
3293         ndev->min_mtu = ETH_MIN_MTU;
3294
3295         if (mdp->cd->rx_csum) {
3296                 ndev->features = NETIF_F_RXCSUM;
3297                 ndev->hw_features = NETIF_F_RXCSUM;
3298         }
3299
3300         /* set function */
3301         if (mdp->cd->tsu)
3302                 ndev->netdev_ops = &sh_eth_netdev_ops_tsu;
3303         else
3304                 ndev->netdev_ops = &sh_eth_netdev_ops;
3305         ndev->ethtool_ops = &sh_eth_ethtool_ops;
3306         ndev->watchdog_timeo = TX_TIMEOUT;
3307
3308         /* debug message level */
3309         mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE;
3310
3311         /* read and set MAC address */
3312         read_mac_address(ndev, pd->mac_addr);
3313         if (!is_valid_ether_addr(ndev->dev_addr)) {
3314                 dev_warn(&pdev->dev,
3315                          "no valid MAC address supplied, using a random one.\n");
3316                 eth_hw_addr_random(ndev);
3317         }
3318
3319         if (mdp->cd->tsu) {
3320                 int port = pdev->id < 0 ? 0 : pdev->id % 2;
3321                 struct resource *rtsu;
3322
3323                 rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1);
3324                 if (!rtsu) {
3325                         dev_err(&pdev->dev, "no TSU resource\n");
3326                         ret = -ENODEV;
3327                         goto out_release;
3328                 }
3329                 /* We can only request the  TSU region  for the first port
3330                  * of the two  sharing this TSU for the probe to succeed...
3331                  */
3332                 if (port == 0 &&
3333                     !devm_request_mem_region(&pdev->dev, rtsu->start,
3334                                              resource_size(rtsu),
3335                                              dev_name(&pdev->dev))) {
3336                         dev_err(&pdev->dev, "can't request TSU resource.\n");
3337                         ret = -EBUSY;
3338                         goto out_release;
3339                 }
3340                 /* ioremap the TSU registers */
3341                 mdp->tsu_addr = devm_ioremap(&pdev->dev, rtsu->start,
3342                                              resource_size(rtsu));
3343                 if (!mdp->tsu_addr) {
3344                         dev_err(&pdev->dev, "TSU region ioremap() failed.\n");
3345                         ret = -ENOMEM;
3346                         goto out_release;
3347                 }
3348                 mdp->port = port;
3349                 ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
3350
3351                 /* Need to init only the first port of the two sharing a TSU */
3352                 if (port == 0) {
3353                         if (mdp->cd->chip_reset)
3354                                 mdp->cd->chip_reset(ndev);
3355
3356                         /* TSU init (Init only)*/
3357                         sh_eth_tsu_init(mdp);
3358                 }
3359         }
3360
3361         if (mdp->cd->rmiimode)
3362                 sh_eth_write(ndev, 0x1, RMIIMODE);
3363
3364         /* MDIO bus init */
3365         ret = sh_mdio_init(mdp, pd);
3366         if (ret) {
3367                 dev_err_probe(&pdev->dev, ret, "MDIO init failed\n");
3368                 goto out_release;
3369         }
3370
3371         netif_napi_add(ndev, &mdp->napi, sh_eth_poll, 64);
3372
3373         /* network device register */
3374         ret = register_netdev(ndev);
3375         if (ret)
3376                 goto out_napi_del;
3377
3378         if (mdp->cd->magic)
3379                 device_set_wakeup_capable(&pdev->dev, 1);
3380
3381         /* print device information */
3382         netdev_info(ndev, "Base address at 0x%x, %pM, IRQ %d.\n",
3383                     (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
3384
3385         pm_runtime_put(&pdev->dev);
3386         platform_set_drvdata(pdev, ndev);
3387
3388         return ret;
3389
3390 out_napi_del:
3391         netif_napi_del(&mdp->napi);
3392         sh_mdio_release(mdp);
3393
3394 out_release:
3395         /* net_dev free */
3396         free_netdev(ndev);
3397
3398         pm_runtime_put(&pdev->dev);
3399         pm_runtime_disable(&pdev->dev);
3400         return ret;
3401 }
3402
3403 static int sh_eth_drv_remove(struct platform_device *pdev)
3404 {
3405         struct net_device *ndev = platform_get_drvdata(pdev);
3406         struct sh_eth_private *mdp = netdev_priv(ndev);
3407
3408         unregister_netdev(ndev);
3409         netif_napi_del(&mdp->napi);
3410         sh_mdio_release(mdp);
3411         pm_runtime_disable(&pdev->dev);
3412         free_netdev(ndev);
3413
3414         return 0;
3415 }
3416
3417 #ifdef CONFIG_PM
3418 #ifdef CONFIG_PM_SLEEP
3419 static int sh_eth_wol_setup(struct net_device *ndev)
3420 {
3421         struct sh_eth_private *mdp = netdev_priv(ndev);
3422
3423         /* Only allow ECI interrupts */
3424         synchronize_irq(ndev->irq);
3425         napi_disable(&mdp->napi);
3426         sh_eth_write(ndev, EESIPR_ECIIP, EESIPR);
3427
3428         /* Enable MagicPacket */
3429         sh_eth_modify(ndev, ECMR, ECMR_MPDE, ECMR_MPDE);
3430
3431         return enable_irq_wake(ndev->irq);
3432 }
3433
3434 static int sh_eth_wol_restore(struct net_device *ndev)
3435 {
3436         struct sh_eth_private *mdp = netdev_priv(ndev);
3437         int ret;
3438
3439         napi_enable(&mdp->napi);
3440
3441         /* Disable MagicPacket */
3442         sh_eth_modify(ndev, ECMR, ECMR_MPDE, 0);
3443
3444         /* The device needs to be reset to restore MagicPacket logic
3445          * for next wakeup. If we close and open the device it will
3446          * both be reset and all registers restored. This is what
3447          * happens during suspend and resume without WoL enabled.
3448          */
3449         sh_eth_close(ndev);
3450         ret = sh_eth_open(ndev);
3451         if (ret < 0)
3452                 return ret;
3453
3454         return disable_irq_wake(ndev->irq);
3455 }
3456
3457 static int sh_eth_suspend(struct device *dev)
3458 {
3459         struct net_device *ndev = dev_get_drvdata(dev);
3460         struct sh_eth_private *mdp = netdev_priv(ndev);
3461         int ret;
3462
3463         if (!netif_running(ndev))
3464                 return 0;
3465
3466         netif_device_detach(ndev);
3467
3468         if (mdp->wol_enabled)
3469                 ret = sh_eth_wol_setup(ndev);
3470         else
3471                 ret = sh_eth_close(ndev);
3472
3473         return ret;
3474 }
3475
3476 static int sh_eth_resume(struct device *dev)
3477 {
3478         struct net_device *ndev = dev_get_drvdata(dev);
3479         struct sh_eth_private *mdp = netdev_priv(ndev);
3480         int ret;
3481
3482         if (!netif_running(ndev))
3483                 return 0;
3484
3485         if (mdp->wol_enabled)
3486                 ret = sh_eth_wol_restore(ndev);
3487         else
3488                 ret = sh_eth_open(ndev);
3489
3490         if (ret < 0)
3491                 return ret;
3492
3493         netif_device_attach(ndev);
3494
3495         return ret;
3496 }
3497 #endif
3498
3499 static int sh_eth_runtime_nop(struct device *dev)
3500 {
3501         /* Runtime PM callback shared between ->runtime_suspend()
3502          * and ->runtime_resume(). Simply returns success.
3503          *
3504          * This driver re-initializes all registers after
3505          * pm_runtime_get_sync() anyway so there is no need
3506          * to save and restore registers here.
3507          */
3508         return 0;
3509 }
3510
3511 static const struct dev_pm_ops sh_eth_dev_pm_ops = {
3512         SET_SYSTEM_SLEEP_PM_OPS(sh_eth_suspend, sh_eth_resume)
3513         SET_RUNTIME_PM_OPS(sh_eth_runtime_nop, sh_eth_runtime_nop, NULL)
3514 };
3515 #define SH_ETH_PM_OPS (&sh_eth_dev_pm_ops)
3516 #else
3517 #define SH_ETH_PM_OPS NULL
3518 #endif
3519
3520 static const struct platform_device_id sh_eth_id_table[] = {
3521         { "sh7619-ether", (kernel_ulong_t)&sh7619_data },
3522         { "sh771x-ether", (kernel_ulong_t)&sh771x_data },
3523         { "sh7724-ether", (kernel_ulong_t)&sh7724_data },
3524         { "sh7734-gether", (kernel_ulong_t)&sh7734_data },
3525         { "sh7757-ether", (kernel_ulong_t)&sh7757_data },
3526         { "sh7757-gether", (kernel_ulong_t)&sh7757_data_giga },
3527         { "sh7763-gether", (kernel_ulong_t)&sh7763_data },
3528         { }
3529 };
3530 MODULE_DEVICE_TABLE(platform, sh_eth_id_table);
3531
3532 static struct platform_driver sh_eth_driver = {
3533         .probe = sh_eth_drv_probe,
3534         .remove = sh_eth_drv_remove,
3535         .id_table = sh_eth_id_table,
3536         .driver = {
3537                    .name = CARDNAME,
3538                    .pm = SH_ETH_PM_OPS,
3539                    .of_match_table = of_match_ptr(sh_eth_match_table),
3540         },
3541 };
3542
3543 module_platform_driver(sh_eth_driver);
3544
3545 MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda");
3546 MODULE_DESCRIPTION("Renesas SuperH Ethernet driver");
3547 MODULE_LICENSE("GPL v2");