sh_eth.c revision 3340d2aae3433ad9147f6bf0adc452b324e31591
1/* 2 * SuperH Ethernet device driver 3 * 4 * Copyright (C) 2006-2012 Nobuhiro Iwamatsu 5 * Copyright (C) 2008-2012 Renesas Solutions Corp. 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms and conditions of the GNU General Public License, 9 * version 2, as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 14 * more details. 15 * You should have received a copy of the GNU General Public License along with 16 * this program; if not, write to the Free Software Foundation, Inc., 17 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * The full GNU General Public License is included in this distribution in 20 * the file called "COPYING". 21 */ 22 23#include <linux/init.h> 24#include <linux/module.h> 25#include <linux/kernel.h> 26#include <linux/spinlock.h> 27#include <linux/interrupt.h> 28#include <linux/dma-mapping.h> 29#include <linux/etherdevice.h> 30#include <linux/delay.h> 31#include <linux/platform_device.h> 32#include <linux/mdio-bitbang.h> 33#include <linux/netdevice.h> 34#include <linux/phy.h> 35#include <linux/cache.h> 36#include <linux/io.h> 37#include <linux/pm_runtime.h> 38#include <linux/slab.h> 39#include <linux/ethtool.h> 40#include <linux/if_vlan.h> 41#include <linux/clk.h> 42#include <linux/sh_eth.h> 43 44#include "sh_eth.h" 45 46#define SH_ETH_DEF_MSG_ENABLE \ 47 (NETIF_MSG_LINK | \ 48 NETIF_MSG_TIMER | \ 49 NETIF_MSG_RX_ERR| \ 50 NETIF_MSG_TX_ERR) 51 52#if defined(CONFIG_CPU_SUBTYPE_SH7734) || \ 53 defined(CONFIG_CPU_SUBTYPE_SH7763) || \ 54 defined(CONFIG_ARCH_R8A7740) 55static void sh_eth_select_mii(struct net_device *ndev) 56{ 57 u32 value = 0x0; 58 struct sh_eth_private *mdp = netdev_priv(ndev); 59 60 switch (mdp->phy_interface) { 61 case PHY_INTERFACE_MODE_GMII: 62 value = 0x2; 63 break; 64 case PHY_INTERFACE_MODE_MII: 65 value = 0x1; 66 break; 67 case PHY_INTERFACE_MODE_RMII: 68 value = 0x0; 69 break; 70 default: 71 pr_warn("PHY interface mode was not setup. Set to MII.\n"); 72 value = 0x1; 73 break; 74 } 75 76 sh_eth_write(ndev, value, RMII_MII); 77} 78#endif 79 80/* There is CPU dependent code */ 81#if defined(CONFIG_CPU_SUBTYPE_SH7724) || defined(CONFIG_ARCH_R8A7779) 82#define SH_ETH_RESET_DEFAULT 1 83static void sh_eth_set_duplex(struct net_device *ndev) 84{ 85 struct sh_eth_private *mdp = netdev_priv(ndev); 86 87 if (mdp->duplex) /* Full */ 88 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); 89 else /* Half */ 90 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); 91} 92 93static void sh_eth_set_rate(struct net_device *ndev) 94{ 95 struct sh_eth_private *mdp = netdev_priv(ndev); 96 unsigned int bits = ECMR_RTM; 97 98#if defined(CONFIG_ARCH_R8A7779) 99 bits |= ECMR_ELB; 100#endif 101 102 switch (mdp->speed) { 103 case 10: /* 10BASE */ 104 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~bits, ECMR); 105 break; 106 case 100:/* 100BASE */ 107 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | bits, ECMR); 108 break; 109 default: 110 break; 111 } 112} 113 114/* SH7724 */ 115static struct sh_eth_cpu_data sh_eth_my_cpu_data = { 116 .set_duplex = sh_eth_set_duplex, 117 .set_rate = sh_eth_set_rate, 118 119 .ecsr_value = ECSR_PSRTO | ECSR_LCHNG | ECSR_ICD, 120 .ecsipr_value = ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | ECSIPR_ICDIP, 121 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x01ff009f, 122 123 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, 124 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE | 125 EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, 126 .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE, 127 128 .apr = 1, 129 .mpr = 1, 130 .tpauser = 1, 131 .hw_swap = 1, 132 .rpadir = 1, 133 .rpadir_value = 0x00020000, /* NET_IP_ALIGN assumed to be 2 */ 134}; 135#elif defined(CONFIG_CPU_SUBTYPE_SH7757) 136#define SH_ETH_HAS_BOTH_MODULES 1 137#define SH_ETH_HAS_TSU 1 138static int sh_eth_check_reset(struct net_device *ndev); 139 140static void sh_eth_set_duplex(struct net_device *ndev) 141{ 142 struct sh_eth_private *mdp = netdev_priv(ndev); 143 144 if (mdp->duplex) /* Full */ 145 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); 146 else /* Half */ 147 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); 148} 149 150static void sh_eth_set_rate(struct net_device *ndev) 151{ 152 struct sh_eth_private *mdp = netdev_priv(ndev); 153 154 switch (mdp->speed) { 155 case 10: /* 10BASE */ 156 sh_eth_write(ndev, 0, RTRATE); 157 break; 158 case 100:/* 100BASE */ 159 sh_eth_write(ndev, 1, RTRATE); 160 break; 161 default: 162 break; 163 } 164} 165 166/* SH7757 */ 167static struct sh_eth_cpu_data sh_eth_my_cpu_data = { 168 .set_duplex = sh_eth_set_duplex, 169 .set_rate = sh_eth_set_rate, 170 171 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, 172 .rmcr_value = 0x00000001, 173 174 .tx_check = EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO, 175 .eesr_err_check = EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE | 176 EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI, 177 .tx_error_check = EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE, 178 179 .apr = 1, 180 .mpr = 1, 181 .tpauser = 1, 182 .hw_swap = 1, 183 .no_ade = 1, 184 .rpadir = 1, 185 .rpadir_value = 2 << 16, 186}; 187 188#define SH_GIGA_ETH_BASE 0xfee00000 189#define GIGA_MALR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c8) 190#define GIGA_MAHR(port) (SH_GIGA_ETH_BASE + 0x800 * (port) + 0x05c0) 191static void sh_eth_chip_reset_giga(struct net_device *ndev) 192{ 193 int i; 194 unsigned long mahr[2], malr[2]; 195 196 /* save MAHR and MALR */ 197 for (i = 0; i < 2; i++) { 198 malr[i] = ioread32((void *)GIGA_MALR(i)); 199 mahr[i] = ioread32((void *)GIGA_MAHR(i)); 200 } 201 202 /* reset device */ 203 iowrite32(ARSTR_ARSTR, (void *)(SH_GIGA_ETH_BASE + 0x1800)); 204 mdelay(1); 205 206 /* restore MAHR and MALR */ 207 for (i = 0; i < 2; i++) { 208 iowrite32(malr[i], (void *)GIGA_MALR(i)); 209 iowrite32(mahr[i], (void *)GIGA_MAHR(i)); 210 } 211} 212 213static int sh_eth_is_gether(struct sh_eth_private *mdp); 214static int sh_eth_reset(struct net_device *ndev) 215{ 216 struct sh_eth_private *mdp = netdev_priv(ndev); 217 int ret = 0; 218 219 if (sh_eth_is_gether(mdp)) { 220 sh_eth_write(ndev, 0x03, EDSR); 221 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, 222 EDMR); 223 224 ret = sh_eth_check_reset(ndev); 225 if (ret) 226 goto out; 227 228 /* Table Init */ 229 sh_eth_write(ndev, 0x0, TDLAR); 230 sh_eth_write(ndev, 0x0, TDFAR); 231 sh_eth_write(ndev, 0x0, TDFXR); 232 sh_eth_write(ndev, 0x0, TDFFR); 233 sh_eth_write(ndev, 0x0, RDLAR); 234 sh_eth_write(ndev, 0x0, RDFAR); 235 sh_eth_write(ndev, 0x0, RDFXR); 236 sh_eth_write(ndev, 0x0, RDFFR); 237 } else { 238 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER, 239 EDMR); 240 mdelay(3); 241 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER, 242 EDMR); 243 } 244 245out: 246 return ret; 247} 248 249static void sh_eth_set_duplex_giga(struct net_device *ndev) 250{ 251 struct sh_eth_private *mdp = netdev_priv(ndev); 252 253 if (mdp->duplex) /* Full */ 254 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); 255 else /* Half */ 256 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); 257} 258 259static void sh_eth_set_rate_giga(struct net_device *ndev) 260{ 261 struct sh_eth_private *mdp = netdev_priv(ndev); 262 263 switch (mdp->speed) { 264 case 10: /* 10BASE */ 265 sh_eth_write(ndev, 0x00000000, GECMR); 266 break; 267 case 100:/* 100BASE */ 268 sh_eth_write(ndev, 0x00000010, GECMR); 269 break; 270 case 1000: /* 1000BASE */ 271 sh_eth_write(ndev, 0x00000020, GECMR); 272 break; 273 default: 274 break; 275 } 276} 277 278/* SH7757(GETHERC) */ 279static struct sh_eth_cpu_data sh_eth_my_cpu_data_giga = { 280 .chip_reset = sh_eth_chip_reset_giga, 281 .set_duplex = sh_eth_set_duplex_giga, 282 .set_rate = sh_eth_set_rate_giga, 283 284 .ecsr_value = ECSR_ICD | ECSR_MPD, 285 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP, 286 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, 287 288 .tx_check = EESR_TC1 | EESR_FTC, 289 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ 290 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ 291 EESR_ECI, 292 .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ 293 EESR_TFE, 294 .fdr_value = 0x0000072f, 295 .rmcr_value = 0x00000001, 296 297 .apr = 1, 298 .mpr = 1, 299 .tpauser = 1, 300 .bculr = 1, 301 .hw_swap = 1, 302 .rpadir = 1, 303 .rpadir_value = 2 << 16, 304 .no_trimd = 1, 305 .no_ade = 1, 306 .tsu = 1, 307}; 308 309static struct sh_eth_cpu_data *sh_eth_get_cpu_data(struct sh_eth_private *mdp) 310{ 311 if (sh_eth_is_gether(mdp)) 312 return &sh_eth_my_cpu_data_giga; 313 else 314 return &sh_eth_my_cpu_data; 315} 316 317#elif defined(CONFIG_CPU_SUBTYPE_SH7734) || defined(CONFIG_CPU_SUBTYPE_SH7763) 318#define SH_ETH_HAS_TSU 1 319static int sh_eth_check_reset(struct net_device *ndev); 320static void sh_eth_reset_hw_crc(struct net_device *ndev); 321 322static void sh_eth_chip_reset(struct net_device *ndev) 323{ 324 struct sh_eth_private *mdp = netdev_priv(ndev); 325 326 /* reset device */ 327 sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR); 328 mdelay(1); 329} 330 331static void sh_eth_set_duplex(struct net_device *ndev) 332{ 333 struct sh_eth_private *mdp = netdev_priv(ndev); 334 335 if (mdp->duplex) /* Full */ 336 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); 337 else /* Half */ 338 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); 339} 340 341static void sh_eth_set_rate(struct net_device *ndev) 342{ 343 struct sh_eth_private *mdp = netdev_priv(ndev); 344 345 switch (mdp->speed) { 346 case 10: /* 10BASE */ 347 sh_eth_write(ndev, GECMR_10, GECMR); 348 break; 349 case 100:/* 100BASE */ 350 sh_eth_write(ndev, GECMR_100, GECMR); 351 break; 352 case 1000: /* 1000BASE */ 353 sh_eth_write(ndev, GECMR_1000, GECMR); 354 break; 355 default: 356 break; 357 } 358} 359 360/* sh7763 */ 361static struct sh_eth_cpu_data sh_eth_my_cpu_data = { 362 .chip_reset = sh_eth_chip_reset, 363 .set_duplex = sh_eth_set_duplex, 364 .set_rate = sh_eth_set_rate, 365 366 .ecsr_value = ECSR_ICD | ECSR_MPD, 367 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP, 368 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, 369 370 .tx_check = EESR_TC1 | EESR_FTC, 371 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ 372 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ 373 EESR_ECI, 374 .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ 375 EESR_TFE, 376 377 .apr = 1, 378 .mpr = 1, 379 .tpauser = 1, 380 .bculr = 1, 381 .hw_swap = 1, 382 .no_trimd = 1, 383 .no_ade = 1, 384 .tsu = 1, 385#if defined(CONFIG_CPU_SUBTYPE_SH7734) 386 .hw_crc = 1, 387 .select_mii = 1, 388#endif 389}; 390 391static int sh_eth_reset(struct net_device *ndev) 392{ 393 int ret = 0; 394 395 sh_eth_write(ndev, EDSR_ENALL, EDSR); 396 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR); 397 398 ret = sh_eth_check_reset(ndev); 399 if (ret) 400 goto out; 401 402 /* Table Init */ 403 sh_eth_write(ndev, 0x0, TDLAR); 404 sh_eth_write(ndev, 0x0, TDFAR); 405 sh_eth_write(ndev, 0x0, TDFXR); 406 sh_eth_write(ndev, 0x0, TDFFR); 407 sh_eth_write(ndev, 0x0, RDLAR); 408 sh_eth_write(ndev, 0x0, RDFAR); 409 sh_eth_write(ndev, 0x0, RDFXR); 410 sh_eth_write(ndev, 0x0, RDFFR); 411 412 /* Reset HW CRC register */ 413 sh_eth_reset_hw_crc(ndev); 414 415 /* Select MII mode */ 416 if (sh_eth_my_cpu_data.select_mii) 417 sh_eth_select_mii(ndev); 418out: 419 return ret; 420} 421 422static void sh_eth_reset_hw_crc(struct net_device *ndev) 423{ 424 if (sh_eth_my_cpu_data.hw_crc) 425 sh_eth_write(ndev, 0x0, CSMR); 426} 427 428#elif defined(CONFIG_ARCH_R8A7740) 429#define SH_ETH_HAS_TSU 1 430static int sh_eth_check_reset(struct net_device *ndev); 431 432static void sh_eth_chip_reset(struct net_device *ndev) 433{ 434 struct sh_eth_private *mdp = netdev_priv(ndev); 435 436 /* reset device */ 437 sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR); 438 mdelay(1); 439 440 sh_eth_select_mii(ndev); 441} 442 443static int sh_eth_reset(struct net_device *ndev) 444{ 445 int ret = 0; 446 447 sh_eth_write(ndev, EDSR_ENALL, EDSR); 448 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_GETHER, EDMR); 449 450 ret = sh_eth_check_reset(ndev); 451 if (ret) 452 goto out; 453 454 /* Table Init */ 455 sh_eth_write(ndev, 0x0, TDLAR); 456 sh_eth_write(ndev, 0x0, TDFAR); 457 sh_eth_write(ndev, 0x0, TDFXR); 458 sh_eth_write(ndev, 0x0, TDFFR); 459 sh_eth_write(ndev, 0x0, RDLAR); 460 sh_eth_write(ndev, 0x0, RDFAR); 461 sh_eth_write(ndev, 0x0, RDFXR); 462 sh_eth_write(ndev, 0x0, RDFFR); 463 464out: 465 return ret; 466} 467 468static void sh_eth_set_duplex(struct net_device *ndev) 469{ 470 struct sh_eth_private *mdp = netdev_priv(ndev); 471 472 if (mdp->duplex) /* Full */ 473 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | ECMR_DM, ECMR); 474 else /* Half */ 475 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & ~ECMR_DM, ECMR); 476} 477 478static void sh_eth_set_rate(struct net_device *ndev) 479{ 480 struct sh_eth_private *mdp = netdev_priv(ndev); 481 482 switch (mdp->speed) { 483 case 10: /* 10BASE */ 484 sh_eth_write(ndev, GECMR_10, GECMR); 485 break; 486 case 100:/* 100BASE */ 487 sh_eth_write(ndev, GECMR_100, GECMR); 488 break; 489 case 1000: /* 1000BASE */ 490 sh_eth_write(ndev, GECMR_1000, GECMR); 491 break; 492 default: 493 break; 494 } 495} 496 497/* R8A7740 */ 498static struct sh_eth_cpu_data sh_eth_my_cpu_data = { 499 .chip_reset = sh_eth_chip_reset, 500 .set_duplex = sh_eth_set_duplex, 501 .set_rate = sh_eth_set_rate, 502 503 .ecsr_value = ECSR_ICD | ECSR_MPD, 504 .ecsipr_value = ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP, 505 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, 506 507 .tx_check = EESR_TC1 | EESR_FTC, 508 .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ 509 EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ 510 EESR_ECI, 511 .tx_error_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_TDE | \ 512 EESR_TFE, 513 514 .apr = 1, 515 .mpr = 1, 516 .tpauser = 1, 517 .bculr = 1, 518 .hw_swap = 1, 519 .no_trimd = 1, 520 .no_ade = 1, 521 .tsu = 1, 522 .select_mii = 1, 523}; 524 525#elif defined(CONFIG_CPU_SUBTYPE_SH7619) 526#define SH_ETH_RESET_DEFAULT 1 527static struct sh_eth_cpu_data sh_eth_my_cpu_data = { 528 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, 529 530 .apr = 1, 531 .mpr = 1, 532 .tpauser = 1, 533 .hw_swap = 1, 534}; 535#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712) 536#define SH_ETH_RESET_DEFAULT 1 537#define SH_ETH_HAS_TSU 1 538static struct sh_eth_cpu_data sh_eth_my_cpu_data = { 539 .eesipr_value = DMAC_M_RFRMER | DMAC_M_ECI | 0x003fffff, 540 .tsu = 1, 541}; 542#endif 543 544static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd) 545{ 546 if (!cd->ecsr_value) 547 cd->ecsr_value = DEFAULT_ECSR_INIT; 548 549 if (!cd->ecsipr_value) 550 cd->ecsipr_value = DEFAULT_ECSIPR_INIT; 551 552 if (!cd->fcftr_value) 553 cd->fcftr_value = DEFAULT_FIFO_F_D_RFF | \ 554 DEFAULT_FIFO_F_D_RFD; 555 556 if (!cd->fdr_value) 557 cd->fdr_value = DEFAULT_FDR_INIT; 558 559 if (!cd->rmcr_value) 560 cd->rmcr_value = DEFAULT_RMCR_VALUE; 561 562 if (!cd->tx_check) 563 cd->tx_check = DEFAULT_TX_CHECK; 564 565 if (!cd->eesr_err_check) 566 cd->eesr_err_check = DEFAULT_EESR_ERR_CHECK; 567 568 if (!cd->tx_error_check) 569 cd->tx_error_check = DEFAULT_TX_ERROR_CHECK; 570} 571 572#if defined(SH_ETH_RESET_DEFAULT) 573/* Chip Reset */ 574static int sh_eth_reset(struct net_device *ndev) 575{ 576 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) | EDMR_SRST_ETHER, EDMR); 577 mdelay(3); 578 sh_eth_write(ndev, sh_eth_read(ndev, EDMR) & ~EDMR_SRST_ETHER, EDMR); 579 580 return 0; 581} 582#else 583static int sh_eth_check_reset(struct net_device *ndev) 584{ 585 int ret = 0; 586 int cnt = 100; 587 588 while (cnt > 0) { 589 if (!(sh_eth_read(ndev, EDMR) & 0x3)) 590 break; 591 mdelay(1); 592 cnt--; 593 } 594 if (cnt < 0) { 595 printk(KERN_ERR "Device reset fail\n"); 596 ret = -ETIMEDOUT; 597 } 598 return ret; 599} 600#endif 601 602#if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARCH_SHMOBILE) 603static void sh_eth_set_receive_align(struct sk_buff *skb) 604{ 605 int reserve; 606 607 reserve = SH4_SKB_RX_ALIGN - ((u32)skb->data & (SH4_SKB_RX_ALIGN - 1)); 608 if (reserve) 609 skb_reserve(skb, reserve); 610} 611#else 612static void sh_eth_set_receive_align(struct sk_buff *skb) 613{ 614 skb_reserve(skb, SH2_SH3_SKB_RX_ALIGN); 615} 616#endif 617 618 619/* CPU <-> EDMAC endian convert */ 620static inline __u32 cpu_to_edmac(struct sh_eth_private *mdp, u32 x) 621{ 622 switch (mdp->edmac_endian) { 623 case EDMAC_LITTLE_ENDIAN: 624 return cpu_to_le32(x); 625 case EDMAC_BIG_ENDIAN: 626 return cpu_to_be32(x); 627 } 628 return x; 629} 630 631static inline __u32 edmac_to_cpu(struct sh_eth_private *mdp, u32 x) 632{ 633 switch (mdp->edmac_endian) { 634 case EDMAC_LITTLE_ENDIAN: 635 return le32_to_cpu(x); 636 case EDMAC_BIG_ENDIAN: 637 return be32_to_cpu(x); 638 } 639 return x; 640} 641 642/* 643 * Program the hardware MAC address from dev->dev_addr. 644 */ 645static void update_mac_address(struct net_device *ndev) 646{ 647 sh_eth_write(ndev, 648 (ndev->dev_addr[0] << 24) | (ndev->dev_addr[1] << 16) | 649 (ndev->dev_addr[2] << 8) | (ndev->dev_addr[3]), MAHR); 650 sh_eth_write(ndev, 651 (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5]), MALR); 652} 653 654/* 655 * Get MAC address from SuperH MAC address register 656 * 657 * SuperH's Ethernet device doesn't have 'ROM' to MAC address. 658 * This driver get MAC address that use by bootloader(U-boot or sh-ipl+g). 659 * When you want use this device, you must set MAC address in bootloader. 660 * 661 */ 662static void read_mac_address(struct net_device *ndev, unsigned char *mac) 663{ 664 if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) { 665 memcpy(ndev->dev_addr, mac, 6); 666 } else { 667 ndev->dev_addr[0] = (sh_eth_read(ndev, MAHR) >> 24); 668 ndev->dev_addr[1] = (sh_eth_read(ndev, MAHR) >> 16) & 0xFF; 669 ndev->dev_addr[2] = (sh_eth_read(ndev, MAHR) >> 8) & 0xFF; 670 ndev->dev_addr[3] = (sh_eth_read(ndev, MAHR) & 0xFF); 671 ndev->dev_addr[4] = (sh_eth_read(ndev, MALR) >> 8) & 0xFF; 672 ndev->dev_addr[5] = (sh_eth_read(ndev, MALR) & 0xFF); 673 } 674} 675 676static int sh_eth_is_gether(struct sh_eth_private *mdp) 677{ 678 if (mdp->reg_offset == sh_eth_offset_gigabit) 679 return 1; 680 else 681 return 0; 682} 683 684static unsigned long sh_eth_get_edtrr_trns(struct sh_eth_private *mdp) 685{ 686 if (sh_eth_is_gether(mdp)) 687 return EDTRR_TRNS_GETHER; 688 else 689 return EDTRR_TRNS_ETHER; 690} 691 692struct bb_info { 693 void (*set_gate)(void *addr); 694 struct mdiobb_ctrl ctrl; 695 void *addr; 696 u32 mmd_msk;/* MMD */ 697 u32 mdo_msk; 698 u32 mdi_msk; 699 u32 mdc_msk; 700}; 701 702/* PHY bit set */ 703static void bb_set(void *addr, u32 msk) 704{ 705 iowrite32(ioread32(addr) | msk, addr); 706} 707 708/* PHY bit clear */ 709static void bb_clr(void *addr, u32 msk) 710{ 711 iowrite32((ioread32(addr) & ~msk), addr); 712} 713 714/* PHY bit read */ 715static int bb_read(void *addr, u32 msk) 716{ 717 return (ioread32(addr) & msk) != 0; 718} 719 720/* Data I/O pin control */ 721static void sh_mmd_ctrl(struct mdiobb_ctrl *ctrl, int bit) 722{ 723 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); 724 725 if (bitbang->set_gate) 726 bitbang->set_gate(bitbang->addr); 727 728 if (bit) 729 bb_set(bitbang->addr, bitbang->mmd_msk); 730 else 731 bb_clr(bitbang->addr, bitbang->mmd_msk); 732} 733 734/* Set bit data*/ 735static void sh_set_mdio(struct mdiobb_ctrl *ctrl, int bit) 736{ 737 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); 738 739 if (bitbang->set_gate) 740 bitbang->set_gate(bitbang->addr); 741 742 if (bit) 743 bb_set(bitbang->addr, bitbang->mdo_msk); 744 else 745 bb_clr(bitbang->addr, bitbang->mdo_msk); 746} 747 748/* Get bit data*/ 749static int sh_get_mdio(struct mdiobb_ctrl *ctrl) 750{ 751 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); 752 753 if (bitbang->set_gate) 754 bitbang->set_gate(bitbang->addr); 755 756 return bb_read(bitbang->addr, bitbang->mdi_msk); 757} 758 759/* MDC pin control */ 760static void sh_mdc_ctrl(struct mdiobb_ctrl *ctrl, int bit) 761{ 762 struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl); 763 764 if (bitbang->set_gate) 765 bitbang->set_gate(bitbang->addr); 766 767 if (bit) 768 bb_set(bitbang->addr, bitbang->mdc_msk); 769 else 770 bb_clr(bitbang->addr, bitbang->mdc_msk); 771} 772 773/* mdio bus control struct */ 774static struct mdiobb_ops bb_ops = { 775 .owner = THIS_MODULE, 776 .set_mdc = sh_mdc_ctrl, 777 .set_mdio_dir = sh_mmd_ctrl, 778 .set_mdio_data = sh_set_mdio, 779 .get_mdio_data = sh_get_mdio, 780}; 781 782/* free skb and descriptor buffer */ 783static void sh_eth_ring_free(struct net_device *ndev) 784{ 785 struct sh_eth_private *mdp = netdev_priv(ndev); 786 int i; 787 788 /* Free Rx skb ringbuffer */ 789 if (mdp->rx_skbuff) { 790 for (i = 0; i < mdp->num_rx_ring; i++) { 791 if (mdp->rx_skbuff[i]) 792 dev_kfree_skb(mdp->rx_skbuff[i]); 793 } 794 } 795 kfree(mdp->rx_skbuff); 796 mdp->rx_skbuff = NULL; 797 798 /* Free Tx skb ringbuffer */ 799 if (mdp->tx_skbuff) { 800 for (i = 0; i < mdp->num_tx_ring; i++) { 801 if (mdp->tx_skbuff[i]) 802 dev_kfree_skb(mdp->tx_skbuff[i]); 803 } 804 } 805 kfree(mdp->tx_skbuff); 806 mdp->tx_skbuff = NULL; 807} 808 809/* format skb and descriptor buffer */ 810static void sh_eth_ring_format(struct net_device *ndev) 811{ 812 struct sh_eth_private *mdp = netdev_priv(ndev); 813 int i; 814 struct sk_buff *skb; 815 struct sh_eth_rxdesc *rxdesc = NULL; 816 struct sh_eth_txdesc *txdesc = NULL; 817 int rx_ringsize = sizeof(*rxdesc) * mdp->num_rx_ring; 818 int tx_ringsize = sizeof(*txdesc) * mdp->num_tx_ring; 819 820 mdp->cur_rx = mdp->cur_tx = 0; 821 mdp->dirty_rx = mdp->dirty_tx = 0; 822 823 memset(mdp->rx_ring, 0, rx_ringsize); 824 825 /* build Rx ring buffer */ 826 for (i = 0; i < mdp->num_rx_ring; i++) { 827 /* skb */ 828 mdp->rx_skbuff[i] = NULL; 829 skb = netdev_alloc_skb(ndev, mdp->rx_buf_sz); 830 mdp->rx_skbuff[i] = skb; 831 if (skb == NULL) 832 break; 833 dma_map_single(&ndev->dev, skb->data, mdp->rx_buf_sz, 834 DMA_FROM_DEVICE); 835 sh_eth_set_receive_align(skb); 836 837 /* RX descriptor */ 838 rxdesc = &mdp->rx_ring[i]; 839 rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4)); 840 rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP); 841 842 /* The size of the buffer is 16 byte boundary. */ 843 rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16); 844 /* Rx descriptor address set */ 845 if (i == 0) { 846 sh_eth_write(ndev, mdp->rx_desc_dma, RDLAR); 847 if (sh_eth_is_gether(mdp)) 848 sh_eth_write(ndev, mdp->rx_desc_dma, RDFAR); 849 } 850 } 851 852 mdp->dirty_rx = (u32) (i - mdp->num_rx_ring); 853 854 /* Mark the last entry as wrapping the ring. */ 855 rxdesc->status |= cpu_to_edmac(mdp, RD_RDEL); 856 857 memset(mdp->tx_ring, 0, tx_ringsize); 858 859 /* build Tx ring buffer */ 860 for (i = 0; i < mdp->num_tx_ring; i++) { 861 mdp->tx_skbuff[i] = NULL; 862 txdesc = &mdp->tx_ring[i]; 863 txdesc->status = cpu_to_edmac(mdp, TD_TFP); 864 txdesc->buffer_length = 0; 865 if (i == 0) { 866 /* Tx descriptor address set */ 867 sh_eth_write(ndev, mdp->tx_desc_dma, TDLAR); 868 if (sh_eth_is_gether(mdp)) 869 sh_eth_write(ndev, mdp->tx_desc_dma, TDFAR); 870 } 871 } 872 873 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE); 874} 875 876/* Get skb and descriptor buffer */ 877static int sh_eth_ring_init(struct net_device *ndev) 878{ 879 struct sh_eth_private *mdp = netdev_priv(ndev); 880 int rx_ringsize, tx_ringsize, ret = 0; 881 882 /* 883 * +26 gets the maximum ethernet encapsulation, +7 & ~7 because the 884 * card needs room to do 8 byte alignment, +2 so we can reserve 885 * the first 2 bytes, and +16 gets room for the status word from the 886 * card. 887 */ 888 mdp->rx_buf_sz = (ndev->mtu <= 1492 ? PKT_BUF_SZ : 889 (((ndev->mtu + 26 + 7) & ~7) + 2 + 16)); 890 if (mdp->cd->rpadir) 891 mdp->rx_buf_sz += NET_IP_ALIGN; 892 893 /* Allocate RX and TX skb rings */ 894 mdp->rx_skbuff = kmalloc_array(mdp->num_rx_ring, 895 sizeof(*mdp->rx_skbuff), GFP_KERNEL); 896 if (!mdp->rx_skbuff) { 897 ret = -ENOMEM; 898 return ret; 899 } 900 901 mdp->tx_skbuff = kmalloc_array(mdp->num_tx_ring, 902 sizeof(*mdp->tx_skbuff), GFP_KERNEL); 903 if (!mdp->tx_skbuff) { 904 ret = -ENOMEM; 905 goto skb_ring_free; 906 } 907 908 /* Allocate all Rx descriptors. */ 909 rx_ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring; 910 mdp->rx_ring = dma_alloc_coherent(NULL, rx_ringsize, &mdp->rx_desc_dma, 911 GFP_KERNEL); 912 913 if (!mdp->rx_ring) { 914 dev_err(&ndev->dev, "Cannot allocate Rx Ring (size %d bytes)\n", 915 rx_ringsize); 916 ret = -ENOMEM; 917 goto desc_ring_free; 918 } 919 920 mdp->dirty_rx = 0; 921 922 /* Allocate all Tx descriptors. */ 923 tx_ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring; 924 mdp->tx_ring = dma_alloc_coherent(NULL, tx_ringsize, &mdp->tx_desc_dma, 925 GFP_KERNEL); 926 if (!mdp->tx_ring) { 927 dev_err(&ndev->dev, "Cannot allocate Tx Ring (size %d bytes)\n", 928 tx_ringsize); 929 ret = -ENOMEM; 930 goto desc_ring_free; 931 } 932 return ret; 933 934desc_ring_free: 935 /* free DMA buffer */ 936 dma_free_coherent(NULL, rx_ringsize, mdp->rx_ring, mdp->rx_desc_dma); 937 938skb_ring_free: 939 /* Free Rx and Tx skb ring buffer */ 940 sh_eth_ring_free(ndev); 941 mdp->tx_ring = NULL; 942 mdp->rx_ring = NULL; 943 944 return ret; 945} 946 947static void sh_eth_free_dma_buffer(struct sh_eth_private *mdp) 948{ 949 int ringsize; 950 951 if (mdp->rx_ring) { 952 ringsize = sizeof(struct sh_eth_rxdesc) * mdp->num_rx_ring; 953 dma_free_coherent(NULL, ringsize, mdp->rx_ring, 954 mdp->rx_desc_dma); 955 mdp->rx_ring = NULL; 956 } 957 958 if (mdp->tx_ring) { 959 ringsize = sizeof(struct sh_eth_txdesc) * mdp->num_tx_ring; 960 dma_free_coherent(NULL, ringsize, mdp->tx_ring, 961 mdp->tx_desc_dma); 962 mdp->tx_ring = NULL; 963 } 964} 965 966static int sh_eth_dev_init(struct net_device *ndev, bool start) 967{ 968 int ret = 0; 969 struct sh_eth_private *mdp = netdev_priv(ndev); 970 u32 val; 971 972 /* Soft Reset */ 973 ret = sh_eth_reset(ndev); 974 if (ret) 975 goto out; 976 977 /* Descriptor format */ 978 sh_eth_ring_format(ndev); 979 if (mdp->cd->rpadir) 980 sh_eth_write(ndev, mdp->cd->rpadir_value, RPADIR); 981 982 /* all sh_eth int mask */ 983 sh_eth_write(ndev, 0, EESIPR); 984 985#if defined(__LITTLE_ENDIAN) 986 if (mdp->cd->hw_swap) 987 sh_eth_write(ndev, EDMR_EL, EDMR); 988 else 989#endif 990 sh_eth_write(ndev, 0, EDMR); 991 992 /* FIFO size set */ 993 sh_eth_write(ndev, mdp->cd->fdr_value, FDR); 994 sh_eth_write(ndev, 0, TFTR); 995 996 /* Frame recv control */ 997 sh_eth_write(ndev, mdp->cd->rmcr_value, RMCR); 998 999 sh_eth_write(ndev, DESC_I_RINT8 | DESC_I_RINT5 | DESC_I_TINT2, TRSCER); 1000 1001 if (mdp->cd->bculr) 1002 sh_eth_write(ndev, 0x800, BCULR); /* Burst sycle set */ 1003 1004 sh_eth_write(ndev, mdp->cd->fcftr_value, FCFTR); 1005 1006 if (!mdp->cd->no_trimd) 1007 sh_eth_write(ndev, 0, TRIMD); 1008 1009 /* Recv frame limit set register */ 1010 sh_eth_write(ndev, ndev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN, 1011 RFLR); 1012 1013 sh_eth_write(ndev, sh_eth_read(ndev, EESR), EESR); 1014 if (start) 1015 sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR); 1016 1017 /* PAUSE Prohibition */ 1018 val = (sh_eth_read(ndev, ECMR) & ECMR_DM) | 1019 ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) | ECMR_TE | ECMR_RE; 1020 1021 sh_eth_write(ndev, val, ECMR); 1022 1023 if (mdp->cd->set_rate) 1024 mdp->cd->set_rate(ndev); 1025 1026 /* E-MAC Status Register clear */ 1027 sh_eth_write(ndev, mdp->cd->ecsr_value, ECSR); 1028 1029 /* E-MAC Interrupt Enable register */ 1030 if (start) 1031 sh_eth_write(ndev, mdp->cd->ecsipr_value, ECSIPR); 1032 1033 /* Set MAC address */ 1034 update_mac_address(ndev); 1035 1036 /* mask reset */ 1037 if (mdp->cd->apr) 1038 sh_eth_write(ndev, APR_AP, APR); 1039 if (mdp->cd->mpr) 1040 sh_eth_write(ndev, MPR_MP, MPR); 1041 if (mdp->cd->tpauser) 1042 sh_eth_write(ndev, TPAUSER_UNLIMITED, TPAUSER); 1043 1044 if (start) { 1045 /* Setting the Rx mode will start the Rx process. */ 1046 sh_eth_write(ndev, EDRRR_R, EDRRR); 1047 1048 netif_start_queue(ndev); 1049 } 1050 1051out: 1052 return ret; 1053} 1054 1055/* free Tx skb function */ 1056static int sh_eth_txfree(struct net_device *ndev) 1057{ 1058 struct sh_eth_private *mdp = netdev_priv(ndev); 1059 struct sh_eth_txdesc *txdesc; 1060 int freeNum = 0; 1061 int entry = 0; 1062 1063 for (; mdp->cur_tx - mdp->dirty_tx > 0; mdp->dirty_tx++) { 1064 entry = mdp->dirty_tx % mdp->num_tx_ring; 1065 txdesc = &mdp->tx_ring[entry]; 1066 if (txdesc->status & cpu_to_edmac(mdp, TD_TACT)) 1067 break; 1068 /* Free the original skb. */ 1069 if (mdp->tx_skbuff[entry]) { 1070 dma_unmap_single(&ndev->dev, txdesc->addr, 1071 txdesc->buffer_length, DMA_TO_DEVICE); 1072 dev_kfree_skb_irq(mdp->tx_skbuff[entry]); 1073 mdp->tx_skbuff[entry] = NULL; 1074 freeNum++; 1075 } 1076 txdesc->status = cpu_to_edmac(mdp, TD_TFP); 1077 if (entry >= mdp->num_tx_ring - 1) 1078 txdesc->status |= cpu_to_edmac(mdp, TD_TDLE); 1079 1080 ndev->stats.tx_packets++; 1081 ndev->stats.tx_bytes += txdesc->buffer_length; 1082 } 1083 return freeNum; 1084} 1085 1086/* Packet receive function */ 1087static int sh_eth_rx(struct net_device *ndev, u32 intr_status) 1088{ 1089 struct sh_eth_private *mdp = netdev_priv(ndev); 1090 struct sh_eth_rxdesc *rxdesc; 1091 1092 int entry = mdp->cur_rx % mdp->num_rx_ring; 1093 int boguscnt = (mdp->dirty_rx + mdp->num_rx_ring) - mdp->cur_rx; 1094 struct sk_buff *skb; 1095 u16 pkt_len = 0; 1096 u32 desc_status; 1097 1098 rxdesc = &mdp->rx_ring[entry]; 1099 while (!(rxdesc->status & cpu_to_edmac(mdp, RD_RACT))) { 1100 desc_status = edmac_to_cpu(mdp, rxdesc->status); 1101 pkt_len = rxdesc->frame_length; 1102 1103#if defined(CONFIG_ARCH_R8A7740) 1104 desc_status >>= 16; 1105#endif 1106 1107 if (--boguscnt < 0) 1108 break; 1109 1110 if (!(desc_status & RDFEND)) 1111 ndev->stats.rx_length_errors++; 1112 1113 if (desc_status & (RD_RFS1 | RD_RFS2 | RD_RFS3 | RD_RFS4 | 1114 RD_RFS5 | RD_RFS6 | RD_RFS10)) { 1115 ndev->stats.rx_errors++; 1116 if (desc_status & RD_RFS1) 1117 ndev->stats.rx_crc_errors++; 1118 if (desc_status & RD_RFS2) 1119 ndev->stats.rx_frame_errors++; 1120 if (desc_status & RD_RFS3) 1121 ndev->stats.rx_length_errors++; 1122 if (desc_status & RD_RFS4) 1123 ndev->stats.rx_length_errors++; 1124 if (desc_status & RD_RFS6) 1125 ndev->stats.rx_missed_errors++; 1126 if (desc_status & RD_RFS10) 1127 ndev->stats.rx_over_errors++; 1128 } else { 1129 if (!mdp->cd->hw_swap) 1130 sh_eth_soft_swap( 1131 phys_to_virt(ALIGN(rxdesc->addr, 4)), 1132 pkt_len + 2); 1133 skb = mdp->rx_skbuff[entry]; 1134 mdp->rx_skbuff[entry] = NULL; 1135 if (mdp->cd->rpadir) 1136 skb_reserve(skb, NET_IP_ALIGN); 1137 skb_put(skb, pkt_len); 1138 skb->protocol = eth_type_trans(skb, ndev); 1139 netif_rx(skb); 1140 ndev->stats.rx_packets++; 1141 ndev->stats.rx_bytes += pkt_len; 1142 } 1143 rxdesc->status |= cpu_to_edmac(mdp, RD_RACT); 1144 entry = (++mdp->cur_rx) % mdp->num_rx_ring; 1145 rxdesc = &mdp->rx_ring[entry]; 1146 } 1147 1148 /* Refill the Rx ring buffers. */ 1149 for (; mdp->cur_rx - mdp->dirty_rx > 0; mdp->dirty_rx++) { 1150 entry = mdp->dirty_rx % mdp->num_rx_ring; 1151 rxdesc = &mdp->rx_ring[entry]; 1152 /* The size of the buffer is 16 byte boundary. */ 1153 rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16); 1154 1155 if (mdp->rx_skbuff[entry] == NULL) { 1156 skb = netdev_alloc_skb(ndev, mdp->rx_buf_sz); 1157 mdp->rx_skbuff[entry] = skb; 1158 if (skb == NULL) 1159 break; /* Better luck next round. */ 1160 dma_map_single(&ndev->dev, skb->data, mdp->rx_buf_sz, 1161 DMA_FROM_DEVICE); 1162 sh_eth_set_receive_align(skb); 1163 1164 skb_checksum_none_assert(skb); 1165 rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4)); 1166 } 1167 if (entry >= mdp->num_rx_ring - 1) 1168 rxdesc->status |= 1169 cpu_to_edmac(mdp, RD_RACT | RD_RFP | RD_RDEL); 1170 else 1171 rxdesc->status |= 1172 cpu_to_edmac(mdp, RD_RACT | RD_RFP); 1173 } 1174 1175 /* Restart Rx engine if stopped. */ 1176 /* If we don't need to check status, don't. -KDU */ 1177 if (!(sh_eth_read(ndev, EDRRR) & EDRRR_R)) { 1178 /* fix the values for the next receiving if RDE is set */ 1179 if (intr_status & EESR_RDE) 1180 mdp->cur_rx = mdp->dirty_rx = 1181 (sh_eth_read(ndev, RDFAR) - 1182 sh_eth_read(ndev, RDLAR)) >> 4; 1183 sh_eth_write(ndev, EDRRR_R, EDRRR); 1184 } 1185 1186 return 0; 1187} 1188 1189static void sh_eth_rcv_snd_disable(struct net_device *ndev) 1190{ 1191 /* disable tx and rx */ 1192 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) & 1193 ~(ECMR_RE | ECMR_TE), ECMR); 1194} 1195 1196static void sh_eth_rcv_snd_enable(struct net_device *ndev) 1197{ 1198 /* enable tx and rx */ 1199 sh_eth_write(ndev, sh_eth_read(ndev, ECMR) | 1200 (ECMR_RE | ECMR_TE), ECMR); 1201} 1202 1203/* error control function */ 1204static void sh_eth_error(struct net_device *ndev, int intr_status) 1205{ 1206 struct sh_eth_private *mdp = netdev_priv(ndev); 1207 u32 felic_stat; 1208 u32 link_stat; 1209 u32 mask; 1210 1211 if (intr_status & EESR_ECI) { 1212 felic_stat = sh_eth_read(ndev, ECSR); 1213 sh_eth_write(ndev, felic_stat, ECSR); /* clear int */ 1214 if (felic_stat & ECSR_ICD) 1215 ndev->stats.tx_carrier_errors++; 1216 if (felic_stat & ECSR_LCHNG) { 1217 /* Link Changed */ 1218 if (mdp->cd->no_psr || mdp->no_ether_link) { 1219 goto ignore_link; 1220 } else { 1221 link_stat = (sh_eth_read(ndev, PSR)); 1222 if (mdp->ether_link_active_low) 1223 link_stat = ~link_stat; 1224 } 1225 if (!(link_stat & PHY_ST_LINK)) 1226 sh_eth_rcv_snd_disable(ndev); 1227 else { 1228 /* Link Up */ 1229 sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) & 1230 ~DMAC_M_ECI, EESIPR); 1231 /*clear int */ 1232 sh_eth_write(ndev, sh_eth_read(ndev, ECSR), 1233 ECSR); 1234 sh_eth_write(ndev, sh_eth_read(ndev, EESIPR) | 1235 DMAC_M_ECI, EESIPR); 1236 /* enable tx and rx */ 1237 sh_eth_rcv_snd_enable(ndev); 1238 } 1239 } 1240 } 1241 1242ignore_link: 1243 if (intr_status & EESR_TWB) { 1244 /* Write buck end. unused write back interrupt */ 1245 if (intr_status & EESR_TABT) /* Transmit Abort int */ 1246 ndev->stats.tx_aborted_errors++; 1247 if (netif_msg_tx_err(mdp)) 1248 dev_err(&ndev->dev, "Transmit Abort\n"); 1249 } 1250 1251 if (intr_status & EESR_RABT) { 1252 /* Receive Abort int */ 1253 if (intr_status & EESR_RFRMER) { 1254 /* Receive Frame Overflow int */ 1255 ndev->stats.rx_frame_errors++; 1256 if (netif_msg_rx_err(mdp)) 1257 dev_err(&ndev->dev, "Receive Abort\n"); 1258 } 1259 } 1260 1261 if (intr_status & EESR_TDE) { 1262 /* Transmit Descriptor Empty int */ 1263 ndev->stats.tx_fifo_errors++; 1264 if (netif_msg_tx_err(mdp)) 1265 dev_err(&ndev->dev, "Transmit Descriptor Empty\n"); 1266 } 1267 1268 if (intr_status & EESR_TFE) { 1269 /* FIFO under flow */ 1270 ndev->stats.tx_fifo_errors++; 1271 if (netif_msg_tx_err(mdp)) 1272 dev_err(&ndev->dev, "Transmit FIFO Under flow\n"); 1273 } 1274 1275 if (intr_status & EESR_RDE) { 1276 /* Receive Descriptor Empty int */ 1277 ndev->stats.rx_over_errors++; 1278 1279 if (netif_msg_rx_err(mdp)) 1280 dev_err(&ndev->dev, "Receive Descriptor Empty\n"); 1281 } 1282 1283 if (intr_status & EESR_RFE) { 1284 /* Receive FIFO Overflow int */ 1285 ndev->stats.rx_fifo_errors++; 1286 if (netif_msg_rx_err(mdp)) 1287 dev_err(&ndev->dev, "Receive FIFO Overflow\n"); 1288 } 1289 1290 if (!mdp->cd->no_ade && (intr_status & EESR_ADE)) { 1291 /* Address Error */ 1292 ndev->stats.tx_fifo_errors++; 1293 if (netif_msg_tx_err(mdp)) 1294 dev_err(&ndev->dev, "Address Error\n"); 1295 } 1296 1297 mask = EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE; 1298 if (mdp->cd->no_ade) 1299 mask &= ~EESR_ADE; 1300 if (intr_status & mask) { 1301 /* Tx error */ 1302 u32 edtrr = sh_eth_read(ndev, EDTRR); 1303 /* dmesg */ 1304 dev_err(&ndev->dev, "TX error. status=%8.8x cur_tx=%8.8x ", 1305 intr_status, mdp->cur_tx); 1306 dev_err(&ndev->dev, "dirty_tx=%8.8x state=%8.8x EDTRR=%8.8x.\n", 1307 mdp->dirty_tx, (u32) ndev->state, edtrr); 1308 /* dirty buffer free */ 1309 sh_eth_txfree(ndev); 1310 1311 /* SH7712 BUG */ 1312 if (edtrr ^ sh_eth_get_edtrr_trns(mdp)) { 1313 /* tx dma start */ 1314 sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR); 1315 } 1316 /* wakeup */ 1317 netif_wake_queue(ndev); 1318 } 1319} 1320 1321static irqreturn_t sh_eth_interrupt(int irq, void *netdev) 1322{ 1323 struct net_device *ndev = netdev; 1324 struct sh_eth_private *mdp = netdev_priv(ndev); 1325 struct sh_eth_cpu_data *cd = mdp->cd; 1326 irqreturn_t ret = IRQ_NONE; 1327 unsigned long intr_status; 1328 1329 spin_lock(&mdp->lock); 1330 1331 /* Get interrupt status */ 1332 intr_status = sh_eth_read(ndev, EESR); 1333 /* Mask it with the interrupt mask, forcing ECI interrupt to be always 1334 * enabled since it's the one that comes thru regardless of the mask, 1335 * and we need to fully handle it in sh_eth_error() in order to quench 1336 * it as it doesn't get cleared by just writing 1 to the ECI bit... 1337 */ 1338 intr_status &= sh_eth_read(ndev, EESIPR) | DMAC_M_ECI; 1339 /* Clear interrupt */ 1340 if (intr_status & (EESR_FRC | EESR_RMAF | EESR_RRF | 1341 EESR_RTLF | EESR_RTSF | EESR_PRE | EESR_CERF | 1342 cd->tx_check | cd->eesr_err_check)) { 1343 sh_eth_write(ndev, intr_status, EESR); 1344 ret = IRQ_HANDLED; 1345 } else 1346 goto other_irq; 1347 1348 if (intr_status & (EESR_FRC | /* Frame recv*/ 1349 EESR_RMAF | /* Multi cast address recv*/ 1350 EESR_RRF | /* Bit frame recv */ 1351 EESR_RTLF | /* Long frame recv*/ 1352 EESR_RTSF | /* short frame recv */ 1353 EESR_PRE | /* PHY-LSI recv error */ 1354 EESR_CERF)){ /* recv frame CRC error */ 1355 sh_eth_rx(ndev, intr_status); 1356 } 1357 1358 /* Tx Check */ 1359 if (intr_status & cd->tx_check) { 1360 sh_eth_txfree(ndev); 1361 netif_wake_queue(ndev); 1362 } 1363 1364 if (intr_status & cd->eesr_err_check) 1365 sh_eth_error(ndev, intr_status); 1366 1367other_irq: 1368 spin_unlock(&mdp->lock); 1369 1370 return ret; 1371} 1372 1373/* PHY state control function */ 1374static void sh_eth_adjust_link(struct net_device *ndev) 1375{ 1376 struct sh_eth_private *mdp = netdev_priv(ndev); 1377 struct phy_device *phydev = mdp->phydev; 1378 int new_state = 0; 1379 1380 if (phydev->link) { 1381 if (phydev->duplex != mdp->duplex) { 1382 new_state = 1; 1383 mdp->duplex = phydev->duplex; 1384 if (mdp->cd->set_duplex) 1385 mdp->cd->set_duplex(ndev); 1386 } 1387 1388 if (phydev->speed != mdp->speed) { 1389 new_state = 1; 1390 mdp->speed = phydev->speed; 1391 if (mdp->cd->set_rate) 1392 mdp->cd->set_rate(ndev); 1393 } 1394 if (!mdp->link) { 1395 sh_eth_write(ndev, 1396 (sh_eth_read(ndev, ECMR) & ~ECMR_TXF), ECMR); 1397 new_state = 1; 1398 mdp->link = phydev->link; 1399 if (mdp->cd->no_psr || mdp->no_ether_link) 1400 sh_eth_rcv_snd_enable(ndev); 1401 } 1402 } else if (mdp->link) { 1403 new_state = 1; 1404 mdp->link = 0; 1405 mdp->speed = 0; 1406 mdp->duplex = -1; 1407 if (mdp->cd->no_psr || mdp->no_ether_link) 1408 sh_eth_rcv_snd_disable(ndev); 1409 } 1410 1411 if (new_state && netif_msg_link(mdp)) 1412 phy_print_status(phydev); 1413} 1414 1415/* PHY init function */ 1416static int sh_eth_phy_init(struct net_device *ndev) 1417{ 1418 struct sh_eth_private *mdp = netdev_priv(ndev); 1419 char phy_id[MII_BUS_ID_SIZE + 3]; 1420 struct phy_device *phydev = NULL; 1421 1422 snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT, 1423 mdp->mii_bus->id , mdp->phy_id); 1424 1425 mdp->link = 0; 1426 mdp->speed = 0; 1427 mdp->duplex = -1; 1428 1429 /* Try connect to PHY */ 1430 phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link, 1431 mdp->phy_interface); 1432 if (IS_ERR(phydev)) { 1433 dev_err(&ndev->dev, "phy_connect failed\n"); 1434 return PTR_ERR(phydev); 1435 } 1436 1437 dev_info(&ndev->dev, "attached phy %i to driver %s\n", 1438 phydev->addr, phydev->drv->name); 1439 1440 mdp->phydev = phydev; 1441 1442 return 0; 1443} 1444 1445/* PHY control start function */ 1446static int sh_eth_phy_start(struct net_device *ndev) 1447{ 1448 struct sh_eth_private *mdp = netdev_priv(ndev); 1449 int ret; 1450 1451 ret = sh_eth_phy_init(ndev); 1452 if (ret) 1453 return ret; 1454 1455 /* reset phy - this also wakes it from PDOWN */ 1456 phy_write(mdp->phydev, MII_BMCR, BMCR_RESET); 1457 phy_start(mdp->phydev); 1458 1459 return 0; 1460} 1461 1462static int sh_eth_get_settings(struct net_device *ndev, 1463 struct ethtool_cmd *ecmd) 1464{ 1465 struct sh_eth_private *mdp = netdev_priv(ndev); 1466 unsigned long flags; 1467 int ret; 1468 1469 spin_lock_irqsave(&mdp->lock, flags); 1470 ret = phy_ethtool_gset(mdp->phydev, ecmd); 1471 spin_unlock_irqrestore(&mdp->lock, flags); 1472 1473 return ret; 1474} 1475 1476static int sh_eth_set_settings(struct net_device *ndev, 1477 struct ethtool_cmd *ecmd) 1478{ 1479 struct sh_eth_private *mdp = netdev_priv(ndev); 1480 unsigned long flags; 1481 int ret; 1482 1483 spin_lock_irqsave(&mdp->lock, flags); 1484 1485 /* disable tx and rx */ 1486 sh_eth_rcv_snd_disable(ndev); 1487 1488 ret = phy_ethtool_sset(mdp->phydev, ecmd); 1489 if (ret) 1490 goto error_exit; 1491 1492 if (ecmd->duplex == DUPLEX_FULL) 1493 mdp->duplex = 1; 1494 else 1495 mdp->duplex = 0; 1496 1497 if (mdp->cd->set_duplex) 1498 mdp->cd->set_duplex(ndev); 1499 1500error_exit: 1501 mdelay(1); 1502 1503 /* enable tx and rx */ 1504 sh_eth_rcv_snd_enable(ndev); 1505 1506 spin_unlock_irqrestore(&mdp->lock, flags); 1507 1508 return ret; 1509} 1510 1511static int sh_eth_nway_reset(struct net_device *ndev) 1512{ 1513 struct sh_eth_private *mdp = netdev_priv(ndev); 1514 unsigned long flags; 1515 int ret; 1516 1517 spin_lock_irqsave(&mdp->lock, flags); 1518 ret = phy_start_aneg(mdp->phydev); 1519 spin_unlock_irqrestore(&mdp->lock, flags); 1520 1521 return ret; 1522} 1523 1524static u32 sh_eth_get_msglevel(struct net_device *ndev) 1525{ 1526 struct sh_eth_private *mdp = netdev_priv(ndev); 1527 return mdp->msg_enable; 1528} 1529 1530static void sh_eth_set_msglevel(struct net_device *ndev, u32 value) 1531{ 1532 struct sh_eth_private *mdp = netdev_priv(ndev); 1533 mdp->msg_enable = value; 1534} 1535 1536static const char sh_eth_gstrings_stats[][ETH_GSTRING_LEN] = { 1537 "rx_current", "tx_current", 1538 "rx_dirty", "tx_dirty", 1539}; 1540#define SH_ETH_STATS_LEN ARRAY_SIZE(sh_eth_gstrings_stats) 1541 1542static int sh_eth_get_sset_count(struct net_device *netdev, int sset) 1543{ 1544 switch (sset) { 1545 case ETH_SS_STATS: 1546 return SH_ETH_STATS_LEN; 1547 default: 1548 return -EOPNOTSUPP; 1549 } 1550} 1551 1552static void sh_eth_get_ethtool_stats(struct net_device *ndev, 1553 struct ethtool_stats *stats, u64 *data) 1554{ 1555 struct sh_eth_private *mdp = netdev_priv(ndev); 1556 int i = 0; 1557 1558 /* device-specific stats */ 1559 data[i++] = mdp->cur_rx; 1560 data[i++] = mdp->cur_tx; 1561 data[i++] = mdp->dirty_rx; 1562 data[i++] = mdp->dirty_tx; 1563} 1564 1565static void sh_eth_get_strings(struct net_device *ndev, u32 stringset, u8 *data) 1566{ 1567 switch (stringset) { 1568 case ETH_SS_STATS: 1569 memcpy(data, *sh_eth_gstrings_stats, 1570 sizeof(sh_eth_gstrings_stats)); 1571 break; 1572 } 1573} 1574 1575static void sh_eth_get_ringparam(struct net_device *ndev, 1576 struct ethtool_ringparam *ring) 1577{ 1578 struct sh_eth_private *mdp = netdev_priv(ndev); 1579 1580 ring->rx_max_pending = RX_RING_MAX; 1581 ring->tx_max_pending = TX_RING_MAX; 1582 ring->rx_pending = mdp->num_rx_ring; 1583 ring->tx_pending = mdp->num_tx_ring; 1584} 1585 1586static int sh_eth_set_ringparam(struct net_device *ndev, 1587 struct ethtool_ringparam *ring) 1588{ 1589 struct sh_eth_private *mdp = netdev_priv(ndev); 1590 int ret; 1591 1592 if (ring->tx_pending > TX_RING_MAX || 1593 ring->rx_pending > RX_RING_MAX || 1594 ring->tx_pending < TX_RING_MIN || 1595 ring->rx_pending < RX_RING_MIN) 1596 return -EINVAL; 1597 if (ring->rx_mini_pending || ring->rx_jumbo_pending) 1598 return -EINVAL; 1599 1600 if (netif_running(ndev)) { 1601 netif_tx_disable(ndev); 1602 /* Disable interrupts by clearing the interrupt mask. */ 1603 sh_eth_write(ndev, 0x0000, EESIPR); 1604 /* Stop the chip's Tx and Rx processes. */ 1605 sh_eth_write(ndev, 0, EDTRR); 1606 sh_eth_write(ndev, 0, EDRRR); 1607 synchronize_irq(ndev->irq); 1608 } 1609 1610 /* Free all the skbuffs in the Rx queue. */ 1611 sh_eth_ring_free(ndev); 1612 /* Free DMA buffer */ 1613 sh_eth_free_dma_buffer(mdp); 1614 1615 /* Set new parameters */ 1616 mdp->num_rx_ring = ring->rx_pending; 1617 mdp->num_tx_ring = ring->tx_pending; 1618 1619 ret = sh_eth_ring_init(ndev); 1620 if (ret < 0) { 1621 dev_err(&ndev->dev, "%s: sh_eth_ring_init failed.\n", __func__); 1622 return ret; 1623 } 1624 ret = sh_eth_dev_init(ndev, false); 1625 if (ret < 0) { 1626 dev_err(&ndev->dev, "%s: sh_eth_dev_init failed.\n", __func__); 1627 return ret; 1628 } 1629 1630 if (netif_running(ndev)) { 1631 sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR); 1632 /* Setting the Rx mode will start the Rx process. */ 1633 sh_eth_write(ndev, EDRRR_R, EDRRR); 1634 netif_wake_queue(ndev); 1635 } 1636 1637 return 0; 1638} 1639 1640static const struct ethtool_ops sh_eth_ethtool_ops = { 1641 .get_settings = sh_eth_get_settings, 1642 .set_settings = sh_eth_set_settings, 1643 .nway_reset = sh_eth_nway_reset, 1644 .get_msglevel = sh_eth_get_msglevel, 1645 .set_msglevel = sh_eth_set_msglevel, 1646 .get_link = ethtool_op_get_link, 1647 .get_strings = sh_eth_get_strings, 1648 .get_ethtool_stats = sh_eth_get_ethtool_stats, 1649 .get_sset_count = sh_eth_get_sset_count, 1650 .get_ringparam = sh_eth_get_ringparam, 1651 .set_ringparam = sh_eth_set_ringparam, 1652}; 1653 1654/* network device open function */ 1655static int sh_eth_open(struct net_device *ndev) 1656{ 1657 int ret = 0; 1658 struct sh_eth_private *mdp = netdev_priv(ndev); 1659 1660 pm_runtime_get_sync(&mdp->pdev->dev); 1661 1662 ret = request_irq(ndev->irq, sh_eth_interrupt, 1663#if defined(CONFIG_CPU_SUBTYPE_SH7763) || \ 1664 defined(CONFIG_CPU_SUBTYPE_SH7764) || \ 1665 defined(CONFIG_CPU_SUBTYPE_SH7757) 1666 IRQF_SHARED, 1667#else 1668 0, 1669#endif 1670 ndev->name, ndev); 1671 if (ret) { 1672 dev_err(&ndev->dev, "Can not assign IRQ number\n"); 1673 return ret; 1674 } 1675 1676 /* Descriptor set */ 1677 ret = sh_eth_ring_init(ndev); 1678 if (ret) 1679 goto out_free_irq; 1680 1681 /* device init */ 1682 ret = sh_eth_dev_init(ndev, true); 1683 if (ret) 1684 goto out_free_irq; 1685 1686 /* PHY control start*/ 1687 ret = sh_eth_phy_start(ndev); 1688 if (ret) 1689 goto out_free_irq; 1690 1691 return ret; 1692 1693out_free_irq: 1694 free_irq(ndev->irq, ndev); 1695 pm_runtime_put_sync(&mdp->pdev->dev); 1696 return ret; 1697} 1698 1699/* Timeout function */ 1700static void sh_eth_tx_timeout(struct net_device *ndev) 1701{ 1702 struct sh_eth_private *mdp = netdev_priv(ndev); 1703 struct sh_eth_rxdesc *rxdesc; 1704 int i; 1705 1706 netif_stop_queue(ndev); 1707 1708 if (netif_msg_timer(mdp)) 1709 dev_err(&ndev->dev, "%s: transmit timed out, status %8.8x," 1710 " resetting...\n", ndev->name, (int)sh_eth_read(ndev, EESR)); 1711 1712 /* tx_errors count up */ 1713 ndev->stats.tx_errors++; 1714 1715 /* Free all the skbuffs in the Rx queue. */ 1716 for (i = 0; i < mdp->num_rx_ring; i++) { 1717 rxdesc = &mdp->rx_ring[i]; 1718 rxdesc->status = 0; 1719 rxdesc->addr = 0xBADF00D0; 1720 if (mdp->rx_skbuff[i]) 1721 dev_kfree_skb(mdp->rx_skbuff[i]); 1722 mdp->rx_skbuff[i] = NULL; 1723 } 1724 for (i = 0; i < mdp->num_tx_ring; i++) { 1725 if (mdp->tx_skbuff[i]) 1726 dev_kfree_skb(mdp->tx_skbuff[i]); 1727 mdp->tx_skbuff[i] = NULL; 1728 } 1729 1730 /* device init */ 1731 sh_eth_dev_init(ndev, true); 1732} 1733 1734/* Packet transmit function */ 1735static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev) 1736{ 1737 struct sh_eth_private *mdp = netdev_priv(ndev); 1738 struct sh_eth_txdesc *txdesc; 1739 u32 entry; 1740 unsigned long flags; 1741 1742 spin_lock_irqsave(&mdp->lock, flags); 1743 if ((mdp->cur_tx - mdp->dirty_tx) >= (mdp->num_tx_ring - 4)) { 1744 if (!sh_eth_txfree(ndev)) { 1745 if (netif_msg_tx_queued(mdp)) 1746 dev_warn(&ndev->dev, "TxFD exhausted.\n"); 1747 netif_stop_queue(ndev); 1748 spin_unlock_irqrestore(&mdp->lock, flags); 1749 return NETDEV_TX_BUSY; 1750 } 1751 } 1752 spin_unlock_irqrestore(&mdp->lock, flags); 1753 1754 entry = mdp->cur_tx % mdp->num_tx_ring; 1755 mdp->tx_skbuff[entry] = skb; 1756 txdesc = &mdp->tx_ring[entry]; 1757 /* soft swap. */ 1758 if (!mdp->cd->hw_swap) 1759 sh_eth_soft_swap(phys_to_virt(ALIGN(txdesc->addr, 4)), 1760 skb->len + 2); 1761 txdesc->addr = dma_map_single(&ndev->dev, skb->data, skb->len, 1762 DMA_TO_DEVICE); 1763 if (skb->len < ETHERSMALL) 1764 txdesc->buffer_length = ETHERSMALL; 1765 else 1766 txdesc->buffer_length = skb->len; 1767 1768 if (entry >= mdp->num_tx_ring - 1) 1769 txdesc->status |= cpu_to_edmac(mdp, TD_TACT | TD_TDLE); 1770 else 1771 txdesc->status |= cpu_to_edmac(mdp, TD_TACT); 1772 1773 mdp->cur_tx++; 1774 1775 if (!(sh_eth_read(ndev, EDTRR) & sh_eth_get_edtrr_trns(mdp))) 1776 sh_eth_write(ndev, sh_eth_get_edtrr_trns(mdp), EDTRR); 1777 1778 return NETDEV_TX_OK; 1779} 1780 1781/* device close function */ 1782static int sh_eth_close(struct net_device *ndev) 1783{ 1784 struct sh_eth_private *mdp = netdev_priv(ndev); 1785 1786 netif_stop_queue(ndev); 1787 1788 /* Disable interrupts by clearing the interrupt mask. */ 1789 sh_eth_write(ndev, 0x0000, EESIPR); 1790 1791 /* Stop the chip's Tx and Rx processes. */ 1792 sh_eth_write(ndev, 0, EDTRR); 1793 sh_eth_write(ndev, 0, EDRRR); 1794 1795 /* PHY Disconnect */ 1796 if (mdp->phydev) { 1797 phy_stop(mdp->phydev); 1798 phy_disconnect(mdp->phydev); 1799 } 1800 1801 free_irq(ndev->irq, ndev); 1802 1803 /* Free all the skbuffs in the Rx queue. */ 1804 sh_eth_ring_free(ndev); 1805 1806 /* free DMA buffer */ 1807 sh_eth_free_dma_buffer(mdp); 1808 1809 pm_runtime_put_sync(&mdp->pdev->dev); 1810 1811 return 0; 1812} 1813 1814static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev) 1815{ 1816 struct sh_eth_private *mdp = netdev_priv(ndev); 1817 1818 pm_runtime_get_sync(&mdp->pdev->dev); 1819 1820 ndev->stats.tx_dropped += sh_eth_read(ndev, TROCR); 1821 sh_eth_write(ndev, 0, TROCR); /* (write clear) */ 1822 ndev->stats.collisions += sh_eth_read(ndev, CDCR); 1823 sh_eth_write(ndev, 0, CDCR); /* (write clear) */ 1824 ndev->stats.tx_carrier_errors += sh_eth_read(ndev, LCCR); 1825 sh_eth_write(ndev, 0, LCCR); /* (write clear) */ 1826 if (sh_eth_is_gether(mdp)) { 1827 ndev->stats.tx_carrier_errors += sh_eth_read(ndev, CERCR); 1828 sh_eth_write(ndev, 0, CERCR); /* (write clear) */ 1829 ndev->stats.tx_carrier_errors += sh_eth_read(ndev, CEECR); 1830 sh_eth_write(ndev, 0, CEECR); /* (write clear) */ 1831 } else { 1832 ndev->stats.tx_carrier_errors += sh_eth_read(ndev, CNDCR); 1833 sh_eth_write(ndev, 0, CNDCR); /* (write clear) */ 1834 } 1835 pm_runtime_put_sync(&mdp->pdev->dev); 1836 1837 return &ndev->stats; 1838} 1839 1840/* ioctl to device function */ 1841static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq, 1842 int cmd) 1843{ 1844 struct sh_eth_private *mdp = netdev_priv(ndev); 1845 struct phy_device *phydev = mdp->phydev; 1846 1847 if (!netif_running(ndev)) 1848 return -EINVAL; 1849 1850 if (!phydev) 1851 return -ENODEV; 1852 1853 return phy_mii_ioctl(phydev, rq, cmd); 1854} 1855 1856#if defined(SH_ETH_HAS_TSU) 1857/* For TSU_POSTn. Please refer to the manual about this (strange) bitfields */ 1858static void *sh_eth_tsu_get_post_reg_offset(struct sh_eth_private *mdp, 1859 int entry) 1860{ 1861 return sh_eth_tsu_get_offset(mdp, TSU_POST1) + (entry / 8 * 4); 1862} 1863 1864static u32 sh_eth_tsu_get_post_mask(int entry) 1865{ 1866 return 0x0f << (28 - ((entry % 8) * 4)); 1867} 1868 1869static u32 sh_eth_tsu_get_post_bit(struct sh_eth_private *mdp, int entry) 1870{ 1871 return (0x08 >> (mdp->port << 1)) << (28 - ((entry % 8) * 4)); 1872} 1873 1874static void sh_eth_tsu_enable_cam_entry_post(struct net_device *ndev, 1875 int entry) 1876{ 1877 struct sh_eth_private *mdp = netdev_priv(ndev); 1878 u32 tmp; 1879 void *reg_offset; 1880 1881 reg_offset = sh_eth_tsu_get_post_reg_offset(mdp, entry); 1882 tmp = ioread32(reg_offset); 1883 iowrite32(tmp | sh_eth_tsu_get_post_bit(mdp, entry), reg_offset); 1884} 1885 1886static bool sh_eth_tsu_disable_cam_entry_post(struct net_device *ndev, 1887 int entry) 1888{ 1889 struct sh_eth_private *mdp = netdev_priv(ndev); 1890 u32 post_mask, ref_mask, tmp; 1891 void *reg_offset; 1892 1893 reg_offset = sh_eth_tsu_get_post_reg_offset(mdp, entry); 1894 post_mask = sh_eth_tsu_get_post_mask(entry); 1895 ref_mask = sh_eth_tsu_get_post_bit(mdp, entry) & ~post_mask; 1896 1897 tmp = ioread32(reg_offset); 1898 iowrite32(tmp & ~post_mask, reg_offset); 1899 1900 /* If other port enables, the function returns "true" */ 1901 return tmp & ref_mask; 1902} 1903 1904static int sh_eth_tsu_busy(struct net_device *ndev) 1905{ 1906 int timeout = SH_ETH_TSU_TIMEOUT_MS * 100; 1907 struct sh_eth_private *mdp = netdev_priv(ndev); 1908 1909 while ((sh_eth_tsu_read(mdp, TSU_ADSBSY) & TSU_ADSBSY_0)) { 1910 udelay(10); 1911 timeout--; 1912 if (timeout <= 0) { 1913 dev_err(&ndev->dev, "%s: timeout\n", __func__); 1914 return -ETIMEDOUT; 1915 } 1916 } 1917 1918 return 0; 1919} 1920 1921static int sh_eth_tsu_write_entry(struct net_device *ndev, void *reg, 1922 const u8 *addr) 1923{ 1924 u32 val; 1925 1926 val = addr[0] << 24 | addr[1] << 16 | addr[2] << 8 | addr[3]; 1927 iowrite32(val, reg); 1928 if (sh_eth_tsu_busy(ndev) < 0) 1929 return -EBUSY; 1930 1931 val = addr[4] << 8 | addr[5]; 1932 iowrite32(val, reg + 4); 1933 if (sh_eth_tsu_busy(ndev) < 0) 1934 return -EBUSY; 1935 1936 return 0; 1937} 1938 1939static void sh_eth_tsu_read_entry(void *reg, u8 *addr) 1940{ 1941 u32 val; 1942 1943 val = ioread32(reg); 1944 addr[0] = (val >> 24) & 0xff; 1945 addr[1] = (val >> 16) & 0xff; 1946 addr[2] = (val >> 8) & 0xff; 1947 addr[3] = val & 0xff; 1948 val = ioread32(reg + 4); 1949 addr[4] = (val >> 8) & 0xff; 1950 addr[5] = val & 0xff; 1951} 1952 1953 1954static int sh_eth_tsu_find_entry(struct net_device *ndev, const u8 *addr) 1955{ 1956 struct sh_eth_private *mdp = netdev_priv(ndev); 1957 void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); 1958 int i; 1959 u8 c_addr[ETH_ALEN]; 1960 1961 for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) { 1962 sh_eth_tsu_read_entry(reg_offset, c_addr); 1963 if (memcmp(addr, c_addr, ETH_ALEN) == 0) 1964 return i; 1965 } 1966 1967 return -ENOENT; 1968} 1969 1970static int sh_eth_tsu_find_empty(struct net_device *ndev) 1971{ 1972 u8 blank[ETH_ALEN]; 1973 int entry; 1974 1975 memset(blank, 0, sizeof(blank)); 1976 entry = sh_eth_tsu_find_entry(ndev, blank); 1977 return (entry < 0) ? -ENOMEM : entry; 1978} 1979 1980static int sh_eth_tsu_disable_cam_entry_table(struct net_device *ndev, 1981 int entry) 1982{ 1983 struct sh_eth_private *mdp = netdev_priv(ndev); 1984 void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); 1985 int ret; 1986 u8 blank[ETH_ALEN]; 1987 1988 sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) & 1989 ~(1 << (31 - entry)), TSU_TEN); 1990 1991 memset(blank, 0, sizeof(blank)); 1992 ret = sh_eth_tsu_write_entry(ndev, reg_offset + entry * 8, blank); 1993 if (ret < 0) 1994 return ret; 1995 return 0; 1996} 1997 1998static int sh_eth_tsu_add_entry(struct net_device *ndev, const u8 *addr) 1999{ 2000 struct sh_eth_private *mdp = netdev_priv(ndev); 2001 void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); 2002 int i, ret; 2003 2004 if (!mdp->cd->tsu) 2005 return 0; 2006 2007 i = sh_eth_tsu_find_entry(ndev, addr); 2008 if (i < 0) { 2009 /* No entry found, create one */ 2010 i = sh_eth_tsu_find_empty(ndev); 2011 if (i < 0) 2012 return -ENOMEM; 2013 ret = sh_eth_tsu_write_entry(ndev, reg_offset + i * 8, addr); 2014 if (ret < 0) 2015 return ret; 2016 2017 /* Enable the entry */ 2018 sh_eth_tsu_write(mdp, sh_eth_tsu_read(mdp, TSU_TEN) | 2019 (1 << (31 - i)), TSU_TEN); 2020 } 2021 2022 /* Entry found or created, enable POST */ 2023 sh_eth_tsu_enable_cam_entry_post(ndev, i); 2024 2025 return 0; 2026} 2027 2028static int sh_eth_tsu_del_entry(struct net_device *ndev, const u8 *addr) 2029{ 2030 struct sh_eth_private *mdp = netdev_priv(ndev); 2031 int i, ret; 2032 2033 if (!mdp->cd->tsu) 2034 return 0; 2035 2036 i = sh_eth_tsu_find_entry(ndev, addr); 2037 if (i) { 2038 /* Entry found */ 2039 if (sh_eth_tsu_disable_cam_entry_post(ndev, i)) 2040 goto done; 2041 2042 /* Disable the entry if both ports was disabled */ 2043 ret = sh_eth_tsu_disable_cam_entry_table(ndev, i); 2044 if (ret < 0) 2045 return ret; 2046 } 2047done: 2048 return 0; 2049} 2050 2051static int sh_eth_tsu_purge_all(struct net_device *ndev) 2052{ 2053 struct sh_eth_private *mdp = netdev_priv(ndev); 2054 int i, ret; 2055 2056 if (unlikely(!mdp->cd->tsu)) 2057 return 0; 2058 2059 for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++) { 2060 if (sh_eth_tsu_disable_cam_entry_post(ndev, i)) 2061 continue; 2062 2063 /* Disable the entry if both ports was disabled */ 2064 ret = sh_eth_tsu_disable_cam_entry_table(ndev, i); 2065 if (ret < 0) 2066 return ret; 2067 } 2068 2069 return 0; 2070} 2071 2072static void sh_eth_tsu_purge_mcast(struct net_device *ndev) 2073{ 2074 struct sh_eth_private *mdp = netdev_priv(ndev); 2075 u8 addr[ETH_ALEN]; 2076 void *reg_offset = sh_eth_tsu_get_offset(mdp, TSU_ADRH0); 2077 int i; 2078 2079 if (unlikely(!mdp->cd->tsu)) 2080 return; 2081 2082 for (i = 0; i < SH_ETH_TSU_CAM_ENTRIES; i++, reg_offset += 8) { 2083 sh_eth_tsu_read_entry(reg_offset, addr); 2084 if (is_multicast_ether_addr(addr)) 2085 sh_eth_tsu_del_entry(ndev, addr); 2086 } 2087} 2088 2089/* Multicast reception directions set */ 2090static void sh_eth_set_multicast_list(struct net_device *ndev) 2091{ 2092 struct sh_eth_private *mdp = netdev_priv(ndev); 2093 u32 ecmr_bits; 2094 int mcast_all = 0; 2095 unsigned long flags; 2096 2097 spin_lock_irqsave(&mdp->lock, flags); 2098 /* 2099 * Initial condition is MCT = 1, PRM = 0. 2100 * Depending on ndev->flags, set PRM or clear MCT 2101 */ 2102 ecmr_bits = (sh_eth_read(ndev, ECMR) & ~ECMR_PRM) | ECMR_MCT; 2103 2104 if (!(ndev->flags & IFF_MULTICAST)) { 2105 sh_eth_tsu_purge_mcast(ndev); 2106 mcast_all = 1; 2107 } 2108 if (ndev->flags & IFF_ALLMULTI) { 2109 sh_eth_tsu_purge_mcast(ndev); 2110 ecmr_bits &= ~ECMR_MCT; 2111 mcast_all = 1; 2112 } 2113 2114 if (ndev->flags & IFF_PROMISC) { 2115 sh_eth_tsu_purge_all(ndev); 2116 ecmr_bits = (ecmr_bits & ~ECMR_MCT) | ECMR_PRM; 2117 } else if (mdp->cd->tsu) { 2118 struct netdev_hw_addr *ha; 2119 netdev_for_each_mc_addr(ha, ndev) { 2120 if (mcast_all && is_multicast_ether_addr(ha->addr)) 2121 continue; 2122 2123 if (sh_eth_tsu_add_entry(ndev, ha->addr) < 0) { 2124 if (!mcast_all) { 2125 sh_eth_tsu_purge_mcast(ndev); 2126 ecmr_bits &= ~ECMR_MCT; 2127 mcast_all = 1; 2128 } 2129 } 2130 } 2131 } else { 2132 /* Normal, unicast/broadcast-only mode. */ 2133 ecmr_bits = (ecmr_bits & ~ECMR_PRM) | ECMR_MCT; 2134 } 2135 2136 /* update the ethernet mode */ 2137 sh_eth_write(ndev, ecmr_bits, ECMR); 2138 2139 spin_unlock_irqrestore(&mdp->lock, flags); 2140} 2141 2142static int sh_eth_get_vtag_index(struct sh_eth_private *mdp) 2143{ 2144 if (!mdp->port) 2145 return TSU_VTAG0; 2146 else 2147 return TSU_VTAG1; 2148} 2149 2150static int sh_eth_vlan_rx_add_vid(struct net_device *ndev, u16 vid) 2151{ 2152 struct sh_eth_private *mdp = netdev_priv(ndev); 2153 int vtag_reg_index = sh_eth_get_vtag_index(mdp); 2154 2155 if (unlikely(!mdp->cd->tsu)) 2156 return -EPERM; 2157 2158 /* No filtering if vid = 0 */ 2159 if (!vid) 2160 return 0; 2161 2162 mdp->vlan_num_ids++; 2163 2164 /* 2165 * The controller has one VLAN tag HW filter. So, if the filter is 2166 * already enabled, the driver disables it and the filte 2167 */ 2168 if (mdp->vlan_num_ids > 1) { 2169 /* disable VLAN filter */ 2170 sh_eth_tsu_write(mdp, 0, vtag_reg_index); 2171 return 0; 2172 } 2173 2174 sh_eth_tsu_write(mdp, TSU_VTAG_ENABLE | (vid & TSU_VTAG_VID_MASK), 2175 vtag_reg_index); 2176 2177 return 0; 2178} 2179 2180static int sh_eth_vlan_rx_kill_vid(struct net_device *ndev, u16 vid) 2181{ 2182 struct sh_eth_private *mdp = netdev_priv(ndev); 2183 int vtag_reg_index = sh_eth_get_vtag_index(mdp); 2184 2185 if (unlikely(!mdp->cd->tsu)) 2186 return -EPERM; 2187 2188 /* No filtering if vid = 0 */ 2189 if (!vid) 2190 return 0; 2191 2192 mdp->vlan_num_ids--; 2193 sh_eth_tsu_write(mdp, 0, vtag_reg_index); 2194 2195 return 0; 2196} 2197#endif /* SH_ETH_HAS_TSU */ 2198 2199/* SuperH's TSU register init function */ 2200static void sh_eth_tsu_init(struct sh_eth_private *mdp) 2201{ 2202 sh_eth_tsu_write(mdp, 0, TSU_FWEN0); /* Disable forward(0->1) */ 2203 sh_eth_tsu_write(mdp, 0, TSU_FWEN1); /* Disable forward(1->0) */ 2204 sh_eth_tsu_write(mdp, 0, TSU_FCM); /* forward fifo 3k-3k */ 2205 sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL0); 2206 sh_eth_tsu_write(mdp, 0xc, TSU_BSYSL1); 2207 sh_eth_tsu_write(mdp, 0, TSU_PRISL0); 2208 sh_eth_tsu_write(mdp, 0, TSU_PRISL1); 2209 sh_eth_tsu_write(mdp, 0, TSU_FWSL0); 2210 sh_eth_tsu_write(mdp, 0, TSU_FWSL1); 2211 sh_eth_tsu_write(mdp, TSU_FWSLC_POSTENU | TSU_FWSLC_POSTENL, TSU_FWSLC); 2212 if (sh_eth_is_gether(mdp)) { 2213 sh_eth_tsu_write(mdp, 0, TSU_QTAG0); /* Disable QTAG(0->1) */ 2214 sh_eth_tsu_write(mdp, 0, TSU_QTAG1); /* Disable QTAG(1->0) */ 2215 } else { 2216 sh_eth_tsu_write(mdp, 0, TSU_QTAGM0); /* Disable QTAG(0->1) */ 2217 sh_eth_tsu_write(mdp, 0, TSU_QTAGM1); /* Disable QTAG(1->0) */ 2218 } 2219 sh_eth_tsu_write(mdp, 0, TSU_FWSR); /* all interrupt status clear */ 2220 sh_eth_tsu_write(mdp, 0, TSU_FWINMK); /* Disable all interrupt */ 2221 sh_eth_tsu_write(mdp, 0, TSU_TEN); /* Disable all CAM entry */ 2222 sh_eth_tsu_write(mdp, 0, TSU_POST1); /* Disable CAM entry [ 0- 7] */ 2223 sh_eth_tsu_write(mdp, 0, TSU_POST2); /* Disable CAM entry [ 8-15] */ 2224 sh_eth_tsu_write(mdp, 0, TSU_POST3); /* Disable CAM entry [16-23] */ 2225 sh_eth_tsu_write(mdp, 0, TSU_POST4); /* Disable CAM entry [24-31] */ 2226} 2227 2228/* MDIO bus release function */ 2229static int sh_mdio_release(struct net_device *ndev) 2230{ 2231 struct sh_eth_private *mdp = netdev_priv(ndev); 2232 struct mii_bus *bus = dev_get_drvdata(&ndev->dev); 2233 2234 /* unregister mdio bus */ 2235 mdiobus_unregister(bus); 2236 2237 /* remove mdio bus info from net_device */ 2238 dev_set_drvdata(&ndev->dev, NULL); 2239 2240 /* free interrupts memory */ 2241 kfree(bus->irq); 2242 2243 /* free bitbang info */ 2244 free_mdio_bitbang(bus); 2245 2246 /* free bitbang memory */ 2247 kfree(mdp->bitbang); 2248 2249 return 0; 2250} 2251 2252/* MDIO bus init function */ 2253static int sh_mdio_init(struct net_device *ndev, int id, 2254 struct sh_eth_plat_data *pd) 2255{ 2256 int ret, i; 2257 struct bb_info *bitbang; 2258 struct sh_eth_private *mdp = netdev_priv(ndev); 2259 2260 /* create bit control struct for PHY */ 2261 bitbang = kzalloc(sizeof(struct bb_info), GFP_KERNEL); 2262 if (!bitbang) { 2263 ret = -ENOMEM; 2264 goto out; 2265 } 2266 2267 /* bitbang init */ 2268 bitbang->addr = mdp->addr + mdp->reg_offset[PIR]; 2269 bitbang->set_gate = pd->set_mdio_gate; 2270 bitbang->mdi_msk = 0x08; 2271 bitbang->mdo_msk = 0x04; 2272 bitbang->mmd_msk = 0x02;/* MMD */ 2273 bitbang->mdc_msk = 0x01; 2274 bitbang->ctrl.ops = &bb_ops; 2275 2276 /* MII controller setting */ 2277 mdp->bitbang = bitbang; 2278 mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl); 2279 if (!mdp->mii_bus) { 2280 ret = -ENOMEM; 2281 goto out_free_bitbang; 2282 } 2283 2284 /* Hook up MII support for ethtool */ 2285 mdp->mii_bus->name = "sh_mii"; 2286 mdp->mii_bus->parent = &ndev->dev; 2287 snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x", 2288 mdp->pdev->name, id); 2289 2290 /* PHY IRQ */ 2291 mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL); 2292 if (!mdp->mii_bus->irq) { 2293 ret = -ENOMEM; 2294 goto out_free_bus; 2295 } 2296 2297 for (i = 0; i < PHY_MAX_ADDR; i++) 2298 mdp->mii_bus->irq[i] = PHY_POLL; 2299 2300 /* register mdio bus */ 2301 ret = mdiobus_register(mdp->mii_bus); 2302 if (ret) 2303 goto out_free_irq; 2304 2305 dev_set_drvdata(&ndev->dev, mdp->mii_bus); 2306 2307 return 0; 2308 2309out_free_irq: 2310 kfree(mdp->mii_bus->irq); 2311 2312out_free_bus: 2313 free_mdio_bitbang(mdp->mii_bus); 2314 2315out_free_bitbang: 2316 kfree(bitbang); 2317 2318out: 2319 return ret; 2320} 2321 2322static const u16 *sh_eth_get_register_offset(int register_type) 2323{ 2324 const u16 *reg_offset = NULL; 2325 2326 switch (register_type) { 2327 case SH_ETH_REG_GIGABIT: 2328 reg_offset = sh_eth_offset_gigabit; 2329 break; 2330 case SH_ETH_REG_FAST_SH4: 2331 reg_offset = sh_eth_offset_fast_sh4; 2332 break; 2333 case SH_ETH_REG_FAST_SH3_SH2: 2334 reg_offset = sh_eth_offset_fast_sh3_sh2; 2335 break; 2336 default: 2337 printk(KERN_ERR "Unknown register type (%d)\n", register_type); 2338 break; 2339 } 2340 2341 return reg_offset; 2342} 2343 2344static const struct net_device_ops sh_eth_netdev_ops = { 2345 .ndo_open = sh_eth_open, 2346 .ndo_stop = sh_eth_close, 2347 .ndo_start_xmit = sh_eth_start_xmit, 2348 .ndo_get_stats = sh_eth_get_stats, 2349#if defined(SH_ETH_HAS_TSU) 2350 .ndo_set_rx_mode = sh_eth_set_multicast_list, 2351 .ndo_vlan_rx_add_vid = sh_eth_vlan_rx_add_vid, 2352 .ndo_vlan_rx_kill_vid = sh_eth_vlan_rx_kill_vid, 2353#endif 2354 .ndo_tx_timeout = sh_eth_tx_timeout, 2355 .ndo_do_ioctl = sh_eth_do_ioctl, 2356 .ndo_validate_addr = eth_validate_addr, 2357 .ndo_set_mac_address = eth_mac_addr, 2358 .ndo_change_mtu = eth_change_mtu, 2359}; 2360 2361static int sh_eth_drv_probe(struct platform_device *pdev) 2362{ 2363 int ret, devno = 0; 2364 struct resource *res; 2365 struct net_device *ndev = NULL; 2366 struct sh_eth_private *mdp = NULL; 2367 struct sh_eth_plat_data *pd; 2368 2369 /* get base addr */ 2370 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2371 if (unlikely(res == NULL)) { 2372 dev_err(&pdev->dev, "invalid resource\n"); 2373 ret = -EINVAL; 2374 goto out; 2375 } 2376 2377 ndev = alloc_etherdev(sizeof(struct sh_eth_private)); 2378 if (!ndev) { 2379 ret = -ENOMEM; 2380 goto out; 2381 } 2382 2383 /* The sh Ether-specific entries in the device structure. */ 2384 ndev->base_addr = res->start; 2385 devno = pdev->id; 2386 if (devno < 0) 2387 devno = 0; 2388 2389 ndev->dma = -1; 2390 ret = platform_get_irq(pdev, 0); 2391 if (ret < 0) { 2392 ret = -ENODEV; 2393 goto out_release; 2394 } 2395 ndev->irq = ret; 2396 2397 SET_NETDEV_DEV(ndev, &pdev->dev); 2398 2399 /* Fill in the fields of the device structure with ethernet values. */ 2400 ether_setup(ndev); 2401 2402 mdp = netdev_priv(ndev); 2403 mdp->num_tx_ring = TX_RING_SIZE; 2404 mdp->num_rx_ring = RX_RING_SIZE; 2405 mdp->addr = ioremap(res->start, resource_size(res)); 2406 if (mdp->addr == NULL) { 2407 ret = -ENOMEM; 2408 dev_err(&pdev->dev, "ioremap failed.\n"); 2409 goto out_release; 2410 } 2411 2412 spin_lock_init(&mdp->lock); 2413 mdp->pdev = pdev; 2414 pm_runtime_enable(&pdev->dev); 2415 pm_runtime_resume(&pdev->dev); 2416 2417 pd = (struct sh_eth_plat_data *)(pdev->dev.platform_data); 2418 /* get PHY ID */ 2419 mdp->phy_id = pd->phy; 2420 mdp->phy_interface = pd->phy_interface; 2421 /* EDMAC endian */ 2422 mdp->edmac_endian = pd->edmac_endian; 2423 mdp->no_ether_link = pd->no_ether_link; 2424 mdp->ether_link_active_low = pd->ether_link_active_low; 2425 mdp->reg_offset = sh_eth_get_register_offset(pd->register_type); 2426 2427 /* set cpu data */ 2428#if defined(SH_ETH_HAS_BOTH_MODULES) 2429 mdp->cd = sh_eth_get_cpu_data(mdp); 2430#else 2431 mdp->cd = &sh_eth_my_cpu_data; 2432#endif 2433 sh_eth_set_default_cpu_data(mdp->cd); 2434 2435 /* set function */ 2436 ndev->netdev_ops = &sh_eth_netdev_ops; 2437 SET_ETHTOOL_OPS(ndev, &sh_eth_ethtool_ops); 2438 ndev->watchdog_timeo = TX_TIMEOUT; 2439 2440 /* debug message level */ 2441 mdp->msg_enable = SH_ETH_DEF_MSG_ENABLE; 2442 2443 /* read and set MAC address */ 2444 read_mac_address(ndev, pd->mac_addr); 2445 2446 /* ioremap the TSU registers */ 2447 if (mdp->cd->tsu) { 2448 struct resource *rtsu; 2449 rtsu = platform_get_resource(pdev, IORESOURCE_MEM, 1); 2450 if (!rtsu) { 2451 dev_err(&pdev->dev, "Not found TSU resource\n"); 2452 ret = -ENODEV; 2453 goto out_release; 2454 } 2455 mdp->tsu_addr = ioremap(rtsu->start, 2456 resource_size(rtsu)); 2457 if (mdp->tsu_addr == NULL) { 2458 ret = -ENOMEM; 2459 dev_err(&pdev->dev, "TSU ioremap failed.\n"); 2460 goto out_release; 2461 } 2462 mdp->port = devno % 2; 2463 ndev->features = NETIF_F_HW_VLAN_FILTER; 2464 } 2465 2466 /* initialize first or needed device */ 2467 if (!devno || pd->needs_init) { 2468 if (mdp->cd->chip_reset) 2469 mdp->cd->chip_reset(ndev); 2470 2471 if (mdp->cd->tsu) { 2472 /* TSU init (Init only)*/ 2473 sh_eth_tsu_init(mdp); 2474 } 2475 } 2476 2477 /* network device register */ 2478 ret = register_netdev(ndev); 2479 if (ret) 2480 goto out_release; 2481 2482 /* mdio bus init */ 2483 ret = sh_mdio_init(ndev, pdev->id, pd); 2484 if (ret) 2485 goto out_unregister; 2486 2487 /* print device information */ 2488 pr_info("Base address at 0x%x, %pM, IRQ %d.\n", 2489 (u32)ndev->base_addr, ndev->dev_addr, ndev->irq); 2490 2491 platform_set_drvdata(pdev, ndev); 2492 2493 return ret; 2494 2495out_unregister: 2496 unregister_netdev(ndev); 2497 2498out_release: 2499 /* net_dev free */ 2500 if (mdp && mdp->addr) 2501 iounmap(mdp->addr); 2502 if (mdp && mdp->tsu_addr) 2503 iounmap(mdp->tsu_addr); 2504 if (ndev) 2505 free_netdev(ndev); 2506 2507out: 2508 return ret; 2509} 2510 2511static int sh_eth_drv_remove(struct platform_device *pdev) 2512{ 2513 struct net_device *ndev = platform_get_drvdata(pdev); 2514 struct sh_eth_private *mdp = netdev_priv(ndev); 2515 2516 if (mdp->cd->tsu) 2517 iounmap(mdp->tsu_addr); 2518 sh_mdio_release(ndev); 2519 unregister_netdev(ndev); 2520 pm_runtime_disable(&pdev->dev); 2521 iounmap(mdp->addr); 2522 free_netdev(ndev); 2523 platform_set_drvdata(pdev, NULL); 2524 2525 return 0; 2526} 2527 2528static int sh_eth_runtime_nop(struct device *dev) 2529{ 2530 /* 2531 * Runtime PM callback shared between ->runtime_suspend() 2532 * and ->runtime_resume(). Simply returns success. 2533 * 2534 * This driver re-initializes all registers after 2535 * pm_runtime_get_sync() anyway so there is no need 2536 * to save and restore registers here. 2537 */ 2538 return 0; 2539} 2540 2541static struct dev_pm_ops sh_eth_dev_pm_ops = { 2542 .runtime_suspend = sh_eth_runtime_nop, 2543 .runtime_resume = sh_eth_runtime_nop, 2544}; 2545 2546static struct platform_driver sh_eth_driver = { 2547 .probe = sh_eth_drv_probe, 2548 .remove = sh_eth_drv_remove, 2549 .driver = { 2550 .name = CARDNAME, 2551 .pm = &sh_eth_dev_pm_ops, 2552 }, 2553}; 2554 2555module_platform_driver(sh_eth_driver); 2556 2557MODULE_AUTHOR("Nobuhiro Iwamatsu, Yoshihiro Shimoda"); 2558MODULE_DESCRIPTION("Renesas SuperH Ethernet driver"); 2559MODULE_LICENSE("GPL v2"); 2560