drivers/net/ethernet/microchip/lan743x_main.c

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /* Copyright (C) 2018 Microchip Technology Inc. */
   3
   4 #include <linux/module.h>
   5 #include <linux/pci.h>
   6 #include <linux/netdevice.h>
   7 #include <linux/etherdevice.h>
   8 #include <linux/crc32.h>
   9 #include <linux/microchipphy.h>
  10 #include <linux/net_tstamp.h>
  11 #include <linux/of_mdio.h>
  12 #include <linux/of_net.h>
  13 #include <linux/phy.h>
  14 #include <linux/phy_fixed.h>
  15 #include <linux/rtnetlink.h>
  16 #include <linux/iopoll.h>
  17 #include <linux/crc16.h>
  18 #include "lan743x_main.h"
  19 #include "lan743x_ethtool.h"
  20
  21 #define MMD_ACCESS_ADDRESS      0
  22 #define MMD_ACCESS_WRITE        1
  23 #define MMD_ACCESS_READ         2
  24 #define MMD_ACCESS_READ_INC     3
  25 #define PCS_POWER_STATE_DOWN    0x6
  26 #define PCS_POWER_STATE_UP      0x4
  27
  28 static void pci11x1x_strap_get_status(struct lan743x_adapter *adapter)
  29 {
  30         u32 chip_rev;
  31         u32 cfg_load;
  32         u32 hw_cfg;
  33         u32 strap;
  34         int ret;
  35
  36         /* Timeout = 100 (i.e. 1 sec (10 msce * 100)) */
  37         ret = lan743x_hs_syslock_acquire(adapter, 100);
  38         if (ret < 0) {
  39                 netif_err(adapter, drv, adapter->netdev,
  40                           "Sys Lock acquire failed ret:%d\n", ret);
  41                 return;
  42         }
  43
  44         cfg_load = lan743x_csr_read(adapter, ETH_SYS_CONFIG_LOAD_STARTED_REG);
  45         lan743x_hs_syslock_release(adapter);
  46         hw_cfg = lan743x_csr_read(adapter, HW_CFG);
  47
  48         if (cfg_load & GEN_SYS_LOAD_STARTED_REG_ETH_ ||
  49             hw_cfg & HW_CFG_RST_PROTECT_) {
  50                 strap = lan743x_csr_read(adapter, STRAP_READ);
  51                 if (strap & STRAP_READ_SGMII_EN_)
  52                         adapter->is_sgmii_en = true;
  53                 else
  54                         adapter->is_sgmii_en = false;
  55         } else {
  56                 chip_rev = lan743x_csr_read(adapter, FPGA_REV);
  57                 if (chip_rev) {
  58                         if (chip_rev & FPGA_SGMII_OP)
  59                                 adapter->is_sgmii_en = true;
  60                         else
  61                                 adapter->is_sgmii_en = false;
  62                 } else {
  63                         adapter->is_sgmii_en = false;
  64                 }
  65         }
  66         netif_dbg(adapter, drv, adapter->netdev,
  67                   "SGMII I/F %sable\n", adapter->is_sgmii_en ? "En" : "Dis");
  68 }
  69
  70 static bool is_pci11x1x_chip(struct lan743x_adapter *adapter)
  71 {
  72         struct lan743x_csr *csr = &adapter->csr;
  73         u32 id_rev = csr->id_rev;
  74
  75         if (((id_rev & 0xFFFF0000) == ID_REV_ID_A011_) ||
  76             ((id_rev & 0xFFFF0000) == ID_REV_ID_A041_)) {
  77                 return true;
  78         }
  79         return false;
  80 }
  81
  82 static void lan743x_pci_cleanup(struct lan743x_adapter *adapter)
  83 {
  84         pci_release_selected_regions(adapter->pdev,
  85                                      pci_select_bars(adapter->pdev,
  86                                                      IORESOURCE_MEM));
  87         pci_disable_device(adapter->pdev);
  88 }
  89
  90 static int lan743x_pci_init(struct lan743x_adapter *adapter,
  91                             struct pci_dev *pdev)
  92 {
  93         unsigned long bars = 0;
  94         int ret;
  95
  96         adapter->pdev = pdev;
  97         ret = pci_enable_device_mem(pdev);
  98         if (ret)
  99                 goto return_error;
 100
 101         netif_info(adapter, probe, adapter->netdev,
 102                    "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n",
 103                    pdev->vendor, pdev->device);
 104         bars = pci_select_bars(pdev, IORESOURCE_MEM);
 105         if (!test_bit(0, &bars))
 106                 goto disable_device;
 107
 108         ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME);
 109         if (ret)
 110                 goto disable_device;
 111
 112         pci_set_master(pdev);
 113         return 0;
 114
 115 disable_device:
 116         pci_disable_device(adapter->pdev);
 117
 118 return_error:
 119         return ret;
 120 }
 121
 122 u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset)
 123 {
 124         return ioread32(&adapter->csr.csr_address[offset]);
 125 }
 126
 127 void lan743x_csr_write(struct lan743x_adapter *adapter, int offset,
 128                        u32 data)
 129 {
 130         iowrite32(data, &adapter->csr.csr_address[offset]);
 131 }
 132
 133 #define LAN743X_CSR_READ_OP(offset)     lan743x_csr_read(adapter, offset)
 134
 135 static int lan743x_csr_light_reset(struct lan743x_adapter *adapter)
 136 {
 137         u32 data;
 138
 139         data = lan743x_csr_read(adapter, HW_CFG);
 140         data |= HW_CFG_LRST_;
 141         lan743x_csr_write(adapter, HW_CFG, data);
 142
 143         return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data,
 144                                   !(data & HW_CFG_LRST_), 100000, 10000000);
 145 }
 146
 147 static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter,
 148                                     int offset, u32 bit_mask,
 149                                     int target_value, int usleep_min,
 150                                     int usleep_max, int count)
 151 {
 152         u32 data;
 153
 154         return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data,
 155                                   target_value == ((data & bit_mask) ? 1 : 0),
 156                                   usleep_max, usleep_min * count);
 157 }
 158
 159 static int lan743x_csr_init(struct lan743x_adapter *adapter)
 160 {
 161         struct lan743x_csr *csr = &adapter->csr;
 162         resource_size_t bar_start, bar_length;
 163         int result;
 164
 165         bar_start = pci_resource_start(adapter->pdev, 0);
 166         bar_length = pci_resource_len(adapter->pdev, 0);
 167         csr->csr_address = devm_ioremap(&adapter->pdev->dev,
 168                                         bar_start, bar_length);
 169         if (!csr->csr_address) {
 170                 result = -ENOMEM;
 171                 goto clean_up;
 172         }
 173
 174         csr->id_rev = lan743x_csr_read(adapter, ID_REV);
 175         csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
 176         netif_info(adapter, probe, adapter->netdev,
 177                    "ID_REV = 0x%08X, FPGA_REV = %d.%d\n",
 178                    csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev),
 179                    FPGA_REV_GET_MINOR_(csr->fpga_rev));
 180         if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) {
 181                 result = -ENODEV;
 182                 goto clean_up;
 183         }
 184
 185         csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
 186         switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) {
 187         case ID_REV_CHIP_REV_A0_:
 188                 csr->flags |= LAN743X_CSR_FLAG_IS_A0;
 189                 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
 190                 break;
 191         case ID_REV_CHIP_REV_B0_:
 192                 csr->flags |= LAN743X_CSR_FLAG_IS_B0;
 193                 break;
 194         }
 195
 196         result = lan743x_csr_light_reset(adapter);
 197         if (result)
 198                 goto clean_up;
 199         return 0;
 200 clean_up:
 201         return result;
 202 }
 203
 204 static void lan743x_intr_software_isr(struct lan743x_adapter *adapter)
 205 {
 206         struct lan743x_intr *intr = &adapter->intr;
 207
 208         /* disable the interrupt to prevent repeated re-triggering */
 209         lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
 210         intr->software_isr_flag = true;
 211         wake_up(&intr->software_isr_wq);
 212 }
 213
 214 static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags)
 215 {
 216         struct lan743x_tx *tx = context;
 217         struct lan743x_adapter *adapter = tx->adapter;
 218         bool enable_flag = true;
 219
 220         lan743x_csr_read(adapter, INT_EN_SET);
 221         if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
 222                 lan743x_csr_write(adapter, INT_EN_CLR,
 223                                   INT_BIT_DMA_TX_(tx->channel_number));
 224         }
 225
 226         if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) {
 227                 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
 228                 u32 dmac_int_sts;
 229                 u32 dmac_int_en;
 230
 231                 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
 232                         dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
 233                 else
 234                         dmac_int_sts = ioc_bit;
 235                 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
 236                         dmac_int_en = lan743x_csr_read(adapter,
 237                                                        DMAC_INT_EN_SET);
 238                 else
 239                         dmac_int_en = ioc_bit;
 240
 241                 dmac_int_en &= ioc_bit;
 242                 dmac_int_sts &= dmac_int_en;
 243                 if (dmac_int_sts & ioc_bit) {
 244                         napi_schedule(&tx->napi);
 245                         enable_flag = false;/* poll func will enable later */
 246                 }
 247         }
 248
 249         if (enable_flag)
 250                 /* enable isr */
 251                 lan743x_csr_write(adapter, INT_EN_SET,
 252                                   INT_BIT_DMA_TX_(tx->channel_number));
 253 }
 254
 255 static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags)
 256 {
 257         struct lan743x_rx *rx = context;
 258         struct lan743x_adapter *adapter = rx->adapter;
 259         bool enable_flag = true;
 260
 261         if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
 262                 lan743x_csr_write(adapter, INT_EN_CLR,
 263                                   INT_BIT_DMA_RX_(rx->channel_number));
 264         }
 265
 266         if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) {
 267                 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number);
 268                 u32 dmac_int_sts;
 269                 u32 dmac_int_en;
 270
 271                 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
 272                         dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
 273                 else
 274                         dmac_int_sts = rx_frame_bit;
 275                 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
 276                         dmac_int_en = lan743x_csr_read(adapter,
 277                                                        DMAC_INT_EN_SET);
 278                 else
 279                         dmac_int_en = rx_frame_bit;
 280
 281                 dmac_int_en &= rx_frame_bit;
 282                 dmac_int_sts &= dmac_int_en;
 283                 if (dmac_int_sts & rx_frame_bit) {
 284                         napi_schedule(&rx->napi);
 285                         enable_flag = false;/* poll funct will enable later */
 286                 }
 287         }
 288
 289         if (enable_flag) {
 290                 /* enable isr */
 291                 lan743x_csr_write(adapter, INT_EN_SET,
 292                                   INT_BIT_DMA_RX_(rx->channel_number));
 293         }
 294 }
 295
 296 static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
 297 {
 298         struct lan743x_adapter *adapter = context;
 299         unsigned int channel;
 300
 301         if (int_sts & INT_BIT_ALL_RX_) {
 302                 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS;
 303                         channel++) {
 304                         u32 int_bit = INT_BIT_DMA_RX_(channel);
 305
 306                         if (int_sts & int_bit) {
 307                                 lan743x_rx_isr(&adapter->rx[channel],
 308                                                int_bit, flags);
 309                                 int_sts &= ~int_bit;
 310                         }
 311                 }
 312         }
 313         if (int_sts & INT_BIT_ALL_TX_) {
 314                 for (channel = 0; channel < adapter->used_tx_channels;
 315                         channel++) {
 316                         u32 int_bit = INT_BIT_DMA_TX_(channel);
 317
 318                         if (int_sts & int_bit) {
 319                                 lan743x_tx_isr(&adapter->tx[channel],
 320                                                int_bit, flags);
 321                                 int_sts &= ~int_bit;
 322                         }
 323                 }
 324         }
 325         if (int_sts & INT_BIT_ALL_OTHER_) {
 326                 if (int_sts & INT_BIT_SW_GP_) {
 327                         lan743x_intr_software_isr(adapter);
 328                         int_sts &= ~INT_BIT_SW_GP_;
 329                 }
 330                 if (int_sts & INT_BIT_1588_) {
 331                         lan743x_ptp_isr(adapter);
 332                         int_sts &= ~INT_BIT_1588_;
 333                 }
 334         }
 335         if (int_sts)
 336                 lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
 337 }
 338
 339 static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr)
 340 {
 341         struct lan743x_vector *vector = ptr;
 342         struct lan743x_adapter *adapter = vector->adapter;
 343         irqreturn_t result = IRQ_NONE;
 344         u32 int_enables;
 345         u32 int_sts;
 346
 347         if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) {
 348                 int_sts = lan743x_csr_read(adapter, INT_STS);
 349         } else if (vector->flags &
 350                    (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C |
 351                    LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) {
 352                 int_sts = lan743x_csr_read(adapter, INT_STS_R2C);
 353         } else {
 354                 /* use mask as implied status */
 355                 int_sts = vector->int_mask | INT_BIT_MAS_;
 356         }
 357
 358         if (!(int_sts & INT_BIT_MAS_))
 359                 goto irq_done;
 360
 361         if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR)
 362                 /* disable vector interrupt */
 363                 lan743x_csr_write(adapter,
 364                                   INT_VEC_EN_CLR,
 365                                   INT_VEC_EN_(vector->vector_index));
 366
 367         if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR)
 368                 /* disable master interrupt */
 369                 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
 370
 371         if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) {
 372                 int_enables = lan743x_csr_read(adapter, INT_EN_SET);
 373         } else {
 374                 /*  use vector mask as implied enable mask */
 375                 int_enables = vector->int_mask;
 376         }
 377
 378         int_sts &= int_enables;
 379         int_sts &= vector->int_mask;
 380         if (int_sts) {
 381                 if (vector->handler) {
 382                         vector->handler(vector->context,
 383                                         int_sts, vector->flags);
 384                 } else {
 385                         /* disable interrupts on this vector */
 386                         lan743x_csr_write(adapter, INT_EN_CLR,
 387                                           vector->int_mask);
 388                 }
 389                 result = IRQ_HANDLED;
 390         }
 391
 392         if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET)
 393                 /* enable master interrupt */
 394                 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
 395
 396         if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET)
 397                 /* enable vector interrupt */
 398                 lan743x_csr_write(adapter,
 399                                   INT_VEC_EN_SET,
 400                                   INT_VEC_EN_(vector->vector_index));
 401 irq_done:
 402         return result;
 403 }
 404
 405 static int lan743x_intr_test_isr(struct lan743x_adapter *adapter)
 406 {
 407         struct lan743x_intr *intr = &adapter->intr;
 408         int ret;
 409
 410         intr->software_isr_flag = false;
 411
 412         /* enable and activate test interrupt */
 413         lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_);
 414         lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_);
 415
 416         ret = wait_event_timeout(intr->software_isr_wq,
 417                                  intr->software_isr_flag,
 418                                  msecs_to_jiffies(200));
 419
 420         /* disable test interrupt */
 421         lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
 422
 423         return ret > 0 ? 0 : -ENODEV;
 424 }
 425
 426 static int lan743x_intr_register_isr(struct lan743x_adapter *adapter,
 427                                      int vector_index, u32 flags,
 428                                      u32 int_mask,
 429                                      lan743x_vector_handler handler,
 430                                      void *context)
 431 {
 432         struct lan743x_vector *vector = &adapter->intr.vector_list
 433                                         [vector_index];
 434         int ret;
 435
 436         vector->adapter = adapter;
 437         vector->flags = flags;
 438         vector->vector_index = vector_index;
 439         vector->int_mask = int_mask;
 440         vector->handler = handler;
 441         vector->context = context;
 442
 443         ret = request_irq(vector->irq,
 444                           lan743x_intr_entry_isr,
 445                           (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ?
 446                           IRQF_SHARED : 0, DRIVER_NAME, vector);
 447         if (ret) {
 448                 vector->handler = NULL;
 449                 vector->context = NULL;
 450                 vector->int_mask = 0;
 451                 vector->flags = 0;
 452         }
 453         return ret;
 454 }
 455
 456 static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter,
 457                                         int vector_index)
 458 {
 459         struct lan743x_vector *vector = &adapter->intr.vector_list
 460                                         [vector_index];
 461
 462         free_irq(vector->irq, vector);
 463         vector->handler = NULL;
 464         vector->context = NULL;
 465         vector->int_mask = 0;
 466         vector->flags = 0;
 467 }
 468
 469 static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter,
 470                                          u32 int_mask)
 471 {
 472         int index;
 473
 474         for (index = 0; index < adapter->max_vector_count; index++) {
 475                 if (adapter->intr.vector_list[index].int_mask & int_mask)
 476                         return adapter->intr.vector_list[index].flags;
 477         }
 478         return 0;
 479 }
 480
 481 static void lan743x_intr_close(struct lan743x_adapter *adapter)
 482 {
 483         struct lan743x_intr *intr = &adapter->intr;
 484         int index = 0;
 485
 486         lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
 487         if (adapter->is_pci11x1x)
 488                 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x0000FFFF);
 489         else
 490                 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF);
 491
 492         for (index = 0; index < intr->number_of_vectors; index++) {
 493                 if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) {
 494                         lan743x_intr_unregister_isr(adapter, index);
 495                         intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index);
 496                 }
 497         }
 498
 499         if (intr->flags & INTR_FLAG_MSI_ENABLED) {
 500                 pci_disable_msi(adapter->pdev);
 501                 intr->flags &= ~INTR_FLAG_MSI_ENABLED;
 502         }
 503
 504         if (intr->flags & INTR_FLAG_MSIX_ENABLED) {
 505                 pci_disable_msix(adapter->pdev);
 506                 intr->flags &= ~INTR_FLAG_MSIX_ENABLED;
 507         }
 508 }
 509
 510 static int lan743x_intr_open(struct lan743x_adapter *adapter)
 511 {
 512         struct msix_entry msix_entries[PCI11X1X_MAX_VECTOR_COUNT];
 513         struct lan743x_intr *intr = &adapter->intr;
 514         unsigned int used_tx_channels;
 515         u32 int_vec_en_auto_clr = 0;
 516         u8 max_vector_count;
 517         u32 int_vec_map0 = 0;
 518         u32 int_vec_map1 = 0;
 519         int ret = -ENODEV;
 520         int index = 0;
 521         u32 flags = 0;
 522
 523         intr->number_of_vectors = 0;
 524
 525         /* Try to set up MSIX interrupts */
 526         max_vector_count = adapter->max_vector_count;
 527         memset(&msix_entries[0], 0,
 528                sizeof(struct msix_entry) * max_vector_count);
 529         for (index = 0; index < max_vector_count; index++)
 530                 msix_entries[index].entry = index;
 531         used_tx_channels = adapter->used_tx_channels;
 532         ret = pci_enable_msix_range(adapter->pdev,
 533                                     msix_entries, 1,
 534                                     1 + used_tx_channels +
 535                                     LAN743X_USED_RX_CHANNELS);
 536
 537         if (ret > 0) {
 538                 intr->flags |= INTR_FLAG_MSIX_ENABLED;
 539                 intr->number_of_vectors = ret;
 540                 intr->using_vectors = true;
 541                 for (index = 0; index < intr->number_of_vectors; index++)
 542                         intr->vector_list[index].irq = msix_entries
 543                                                        [index].vector;
 544                 netif_info(adapter, ifup, adapter->netdev,
 545                            "using MSIX interrupts, number of vectors = %d\n",
 546                            intr->number_of_vectors);
 547         }
 548
 549         /* If MSIX failed try to setup using MSI interrupts */
 550         if (!intr->number_of_vectors) {
 551                 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
 552                         if (!pci_enable_msi(adapter->pdev)) {
 553                                 intr->flags |= INTR_FLAG_MSI_ENABLED;
 554                                 intr->number_of_vectors = 1;
 555                                 intr->using_vectors = true;
 556                                 intr->vector_list[0].irq =
 557                                         adapter->pdev->irq;
 558                                 netif_info(adapter, ifup, adapter->netdev,
 559                                            "using MSI interrupts, number of vectors = %d\n",
 560                                            intr->number_of_vectors);
 561                         }
 562                 }
 563         }
 564
 565         /* If MSIX, and MSI failed, setup using legacy interrupt */
 566         if (!intr->number_of_vectors) {
 567                 intr->number_of_vectors = 1;
 568                 intr->using_vectors = false;
 569                 intr->vector_list[0].irq = intr->irq;
 570                 netif_info(adapter, ifup, adapter->netdev,
 571                            "using legacy interrupts\n");
 572         }
 573
 574         /* At this point we must have at least one irq */
 575         lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF);
 576
 577         /* map all interrupts to vector 0 */
 578         lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000);
 579         lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000);
 580         lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000);
 581         flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
 582                 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
 583                 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
 584                 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
 585
 586         if (intr->using_vectors) {
 587                 flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
 588                          LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
 589         } else {
 590                 flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR |
 591                          LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET |
 592                          LAN743X_VECTOR_FLAG_IRQ_SHARED;
 593         }
 594
 595         if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
 596                 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ;
 597                 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C;
 598                 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
 599                 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK;
 600                 flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C;
 601                 flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C;
 602         }
 603
 604         init_waitqueue_head(&intr->software_isr_wq);
 605
 606         ret = lan743x_intr_register_isr(adapter, 0, flags,
 607                                         INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ |
 608                                         INT_BIT_ALL_OTHER_,
 609                                         lan743x_intr_shared_isr, adapter);
 610         if (ret)
 611                 goto clean_up;
 612         intr->flags |= INTR_FLAG_IRQ_REQUESTED(0);
 613
 614         if (intr->using_vectors)
 615                 lan743x_csr_write(adapter, INT_VEC_EN_SET,
 616                                   INT_VEC_EN_(0));
 617
 618         if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
 619                 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD);
 620                 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD);
 621                 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD);
 622                 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD);
 623                 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD);
 624                 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD);
 625                 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD);
 626                 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD);
 627                 if (adapter->is_pci11x1x) {
 628                         lan743x_csr_write(adapter, INT_MOD_CFG8, LAN743X_INT_MOD);
 629                         lan743x_csr_write(adapter, INT_MOD_CFG9, LAN743X_INT_MOD);
 630                         lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00007654);
 631                         lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00003210);
 632                 } else {
 633                         lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432);
 634                         lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001);
 635                 }
 636                 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF);
 637         }
 638
 639         /* enable interrupts */
 640         lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
 641         ret = lan743x_intr_test_isr(adapter);
 642         if (ret)
 643                 goto clean_up;
 644
 645         if (intr->number_of_vectors > 1) {
 646                 int number_of_tx_vectors = intr->number_of_vectors - 1;
 647
 648                 if (number_of_tx_vectors > used_tx_channels)
 649                         number_of_tx_vectors = used_tx_channels;
 650                 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
 651                         LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
 652                         LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
 653                         LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
 654                         LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
 655                         LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
 656
 657                 if (adapter->csr.flags &
 658                    LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
 659                         flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
 660                                 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
 661                                 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
 662                                 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
 663                 }
 664
 665                 for (index = 0; index < number_of_tx_vectors; index++) {
 666                         u32 int_bit = INT_BIT_DMA_TX_(index);
 667                         int vector = index + 1;
 668
 669                         /* map TX interrupt to vector */
 670                         int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector);
 671                         lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1);
 672
 673                         /* Remove TX interrupt from shared mask */
 674                         intr->vector_list[0].int_mask &= ~int_bit;
 675                         ret = lan743x_intr_register_isr(adapter, vector, flags,
 676                                                         int_bit, lan743x_tx_isr,
 677                                                         &adapter->tx[index]);
 678                         if (ret)
 679                                 goto clean_up;
 680                         intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
 681                         if (!(flags &
 682                             LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET))
 683                                 lan743x_csr_write(adapter, INT_VEC_EN_SET,
 684                                                   INT_VEC_EN_(vector));
 685                 }
 686         }
 687         if ((intr->number_of_vectors - used_tx_channels) > 1) {
 688                 int number_of_rx_vectors = intr->number_of_vectors -
 689                                                 used_tx_channels - 1;
 690
 691                 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS)
 692                         number_of_rx_vectors = LAN743X_USED_RX_CHANNELS;
 693
 694                 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
 695                         LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
 696                         LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
 697                         LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
 698                         LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
 699                         LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
 700
 701                 if (adapter->csr.flags &
 702                     LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
 703                         flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
 704                                 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
 705                                 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
 706                                 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
 707                                 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
 708                 }
 709                 for (index = 0; index < number_of_rx_vectors; index++) {
 710                         int vector = index + 1 + used_tx_channels;
 711                         u32 int_bit = INT_BIT_DMA_RX_(index);
 712
 713                         /* map RX interrupt to vector */
 714                         int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector);
 715                         lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0);
 716                         if (flags &
 717                             LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
 718                                 int_vec_en_auto_clr |= INT_VEC_EN_(vector);
 719                                 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
 720                                                   int_vec_en_auto_clr);
 721                         }
 722
 723                         /* Remove RX interrupt from shared mask */
 724                         intr->vector_list[0].int_mask &= ~int_bit;
 725                         ret = lan743x_intr_register_isr(adapter, vector, flags,
 726                                                         int_bit, lan743x_rx_isr,
 727                                                         &adapter->rx[index]);
 728                         if (ret)
 729                                 goto clean_up;
 730                         intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
 731
 732                         lan743x_csr_write(adapter, INT_VEC_EN_SET,
 733                                           INT_VEC_EN_(vector));
 734                 }
 735         }
 736         return 0;
 737
 738 clean_up:
 739         lan743x_intr_close(adapter);
 740         return ret;
 741 }
 742
 743 static int lan743x_dp_write(struct lan743x_adapter *adapter,
 744                             u32 select, u32 addr, u32 length, u32 *buf)
 745 {
 746         u32 dp_sel;
 747         int i;
 748
 749         if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
 750                                      1, 40, 100, 100))
 751                 return -EIO;
 752         dp_sel = lan743x_csr_read(adapter, DP_SEL);
 753         dp_sel &= ~DP_SEL_MASK_;
 754         dp_sel |= select;
 755         lan743x_csr_write(adapter, DP_SEL, dp_sel);
 756
 757         for (i = 0; i < length; i++) {
 758                 lan743x_csr_write(adapter, DP_ADDR, addr + i);
 759                 lan743x_csr_write(adapter, DP_DATA_0, buf[i]);
 760                 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_);
 761                 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
 762                                              1, 40, 100, 100))
 763                         return -EIO;
 764         }
 765
 766         return 0;
 767 }
 768
 769 static u32 lan743x_mac_mii_access(u16 id, u16 index, int read)
 770 {
 771         u32 ret;
 772
 773         ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
 774                 MAC_MII_ACC_PHY_ADDR_MASK_;
 775         ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) &
 776                 MAC_MII_ACC_MIIRINDA_MASK_;
 777
 778         if (read)
 779                 ret |= MAC_MII_ACC_MII_READ_;
 780         else
 781                 ret |= MAC_MII_ACC_MII_WRITE_;
 782         ret |= MAC_MII_ACC_MII_BUSY_;
 783
 784         return ret;
 785 }
 786
 787 static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter)
 788 {
 789         u32 data;
 790
 791         return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data,
 792                                   !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000);
 793 }
 794
 795 static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index)
 796 {
 797         struct lan743x_adapter *adapter = bus->priv;
 798         u32 val, mii_access;
 799         int ret;
 800
 801         /* comfirm MII not busy */
 802         ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 803         if (ret < 0)
 804                 return ret;
 805
 806         /* set the address, index & direction (read from PHY) */
 807         mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ);
 808         lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
 809         ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 810         if (ret < 0)
 811                 return ret;
 812
 813         val = lan743x_csr_read(adapter, MAC_MII_DATA);
 814         return (int)(val & 0xFFFF);
 815 }
 816
 817 static int lan743x_mdiobus_write(struct mii_bus *bus,
 818                                  int phy_id, int index, u16 regval)
 819 {
 820         struct lan743x_adapter *adapter = bus->priv;
 821         u32 val, mii_access;
 822         int ret;
 823
 824         /* confirm MII not busy */
 825         ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 826         if (ret < 0)
 827                 return ret;
 828         val = (u32)regval;
 829         lan743x_csr_write(adapter, MAC_MII_DATA, val);
 830
 831         /* set the address, index & direction (write to PHY) */
 832         mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE);
 833         lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
 834         ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 835         return ret;
 836 }
 837
 838 static u32 lan743x_mac_mmd_access(int id, int index, int op)
 839 {
 840         u16 dev_addr;
 841         u32 ret;
 842
 843         dev_addr = (index >> 16) & 0x1f;
 844         ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
 845                 MAC_MII_ACC_PHY_ADDR_MASK_;
 846         ret |= (dev_addr << MAC_MII_ACC_MIIMMD_SHIFT_) &
 847                 MAC_MII_ACC_MIIMMD_MASK_;
 848         if (op == MMD_ACCESS_WRITE)
 849                 ret |= MAC_MII_ACC_MIICMD_WRITE_;
 850         else if (op == MMD_ACCESS_READ)
 851                 ret |= MAC_MII_ACC_MIICMD_READ_;
 852         else if (op == MMD_ACCESS_READ_INC)
 853                 ret |= MAC_MII_ACC_MIICMD_READ_INC_;
 854         else
 855                 ret |= MAC_MII_ACC_MIICMD_ADDR_;
 856         ret |= (MAC_MII_ACC_MII_BUSY_ | MAC_MII_ACC_MIICL45_);
 857
 858         return ret;
 859 }
 860
 861 static int lan743x_mdiobus_c45_read(struct mii_bus *bus, int phy_id, int index)
 862 {
 863         struct lan743x_adapter *adapter = bus->priv;
 864         u32 mmd_access;
 865         int ret;
 866
 867         /* comfirm MII not busy */
 868         ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 869         if (ret < 0)
 870                 return ret;
 871         if (index & MII_ADDR_C45) {
 872                 /* Load Register Address */
 873                 lan743x_csr_write(adapter, MAC_MII_DATA, (u32)(index & 0xffff));
 874                 mmd_access = lan743x_mac_mmd_access(phy_id, index,
 875                                                     MMD_ACCESS_ADDRESS);
 876                 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
 877                 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 878                 if (ret < 0)
 879                         return ret;
 880                 /* Read Data */
 881                 mmd_access = lan743x_mac_mmd_access(phy_id, index,
 882                                                     MMD_ACCESS_READ);
 883                 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
 884                 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 885                 if (ret < 0)
 886                         return ret;
 887                 ret = lan743x_csr_read(adapter, MAC_MII_DATA);
 888                 return (int)(ret & 0xFFFF);
 889         }
 890
 891         ret = lan743x_mdiobus_read(bus, phy_id, index);
 892         return ret;
 893 }
 894
 895 static int lan743x_mdiobus_c45_write(struct mii_bus *bus,
 896                                      int phy_id, int index, u16 regval)
 897 {
 898         struct lan743x_adapter *adapter = bus->priv;
 899         u32 mmd_access;
 900         int ret;
 901
 902         /* confirm MII not busy */
 903         ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 904         if (ret < 0)
 905                 return ret;
 906         if (index & MII_ADDR_C45) {
 907                 /* Load Register Address */
 908                 lan743x_csr_write(adapter, MAC_MII_DATA, (u32)(index & 0xffff));
 909                 mmd_access = lan743x_mac_mmd_access(phy_id, index,
 910                                                     MMD_ACCESS_ADDRESS);
 911                 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
 912                 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 913                 if (ret < 0)
 914                         return ret;
 915                 /* Write Data */
 916                 lan743x_csr_write(adapter, MAC_MII_DATA, (u32)regval);
 917                 mmd_access = lan743x_mac_mmd_access(phy_id, index,
 918                                                     MMD_ACCESS_WRITE);
 919                 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
 920                 ret = lan743x_mac_mii_wait_till_not_busy(adapter);
 921         } else {
 922                 ret = lan743x_mdiobus_write(bus, phy_id, index, regval);
 923         }
 924
 925         return ret;
 926 }
 927
 928 static int lan743x_sgmii_wait_till_not_busy(struct lan743x_adapter *adapter)
 929 {
 930         u32 data;
 931         int ret;
 932
 933         ret = readx_poll_timeout(LAN743X_CSR_READ_OP, SGMII_ACC, data,
 934                                  !(data & SGMII_ACC_SGMII_BZY_), 100, 1000000);
 935         if (ret < 0)
 936                 netif_err(adapter, drv, adapter->netdev,
 937                           "%s: error %d sgmii wait timeout\n", __func__, ret);
 938
 939         return ret;
 940 }
 941
 942 static int lan743x_sgmii_read(struct lan743x_adapter *adapter, u8 mmd, u16 addr)
 943 {
 944         u32 mmd_access;
 945         int ret;
 946         u32 val;
 947
 948         if (mmd > 31) {
 949                 netif_err(adapter, probe, adapter->netdev,
 950                           "%s mmd should <= 31\n", __func__);
 951                 return -EINVAL;
 952         }
 953
 954         mutex_lock(&adapter->sgmii_rw_lock);
 955         /* Load Register Address */
 956         mmd_access = mmd << SGMII_ACC_SGMII_MMD_SHIFT_;
 957         mmd_access |= (addr | SGMII_ACC_SGMII_BZY_);
 958         lan743x_csr_write(adapter, SGMII_ACC, mmd_access);
 959         ret = lan743x_sgmii_wait_till_not_busy(adapter);
 960         if (ret < 0)
 961                 goto sgmii_unlock;
 962
 963         val = lan743x_csr_read(adapter, SGMII_DATA);
 964         ret = (int)(val & SGMII_DATA_MASK_);
 965
 966 sgmii_unlock:
 967         mutex_unlock(&adapter->sgmii_rw_lock);
 968
 969         return ret;
 970 }
 971
 972 static int lan743x_sgmii_write(struct lan743x_adapter *adapter,
 973                                u8 mmd, u16 addr, u16 val)
 974 {
 975         u32 mmd_access;
 976         int ret;
 977
 978         if (mmd > 31) {
 979                 netif_err(adapter, probe, adapter->netdev,
 980                           "%s mmd should <= 31\n", __func__);
 981                 return -EINVAL;
 982         }
 983         mutex_lock(&adapter->sgmii_rw_lock);
 984         /* Load Register Data */
 985         lan743x_csr_write(adapter, SGMII_DATA, (u32)(val & SGMII_DATA_MASK_));
 986         /* Load Register Address */
 987         mmd_access = mmd << SGMII_ACC_SGMII_MMD_SHIFT_;
 988         mmd_access |= (addr | SGMII_ACC_SGMII_BZY_ | SGMII_ACC_SGMII_WR_);
 989         lan743x_csr_write(adapter, SGMII_ACC, mmd_access);
 990         ret = lan743x_sgmii_wait_till_not_busy(adapter);
 991         mutex_unlock(&adapter->sgmii_rw_lock);
 992
 993         return ret;
 994 }
 995
 996 static int lan743x_sgmii_mpll_set(struct lan743x_adapter *adapter,
 997                                   u16 baud)
 998 {
 999         int mpllctrl0;
1000         int mpllctrl1;
1001         int miscctrl1;
1002         int ret;
1003
1004         mpllctrl0 = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
1005                                        VR_MII_GEN2_4_MPLL_CTRL0);
1006         if (mpllctrl0 < 0)
1007                 return mpllctrl0;
1008
1009         mpllctrl0 &= ~VR_MII_MPLL_CTRL0_USE_REFCLK_PAD_;
1010         if (baud == VR_MII_BAUD_RATE_1P25GBPS) {
1011                 mpllctrl1 = VR_MII_MPLL_MULTIPLIER_100;
1012                 /* mpll_baud_clk/4 */
1013                 miscctrl1 = 0xA;
1014         } else {
1015                 mpllctrl1 = VR_MII_MPLL_MULTIPLIER_125;
1016                 /* mpll_baud_clk/2 */
1017                 miscctrl1 = 0x5;
1018         }
1019
1020         ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1021                                   VR_MII_GEN2_4_MPLL_CTRL0, mpllctrl0);
1022         if (ret < 0)
1023                 return ret;
1024
1025         ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1026                                   VR_MII_GEN2_4_MPLL_CTRL1, mpllctrl1);
1027         if (ret < 0)
1028                 return ret;
1029
1030         return lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1031                                   VR_MII_GEN2_4_MISC_CTRL1, miscctrl1);
1032 }
1033
1034 static int lan743x_sgmii_2_5G_mode_set(struct lan743x_adapter *adapter,
1035                                        bool enable)
1036 {
1037         if (enable)
1038                 return lan743x_sgmii_mpll_set(adapter,
1039                                               VR_MII_BAUD_RATE_3P125GBPS);
1040         else
1041                 return lan743x_sgmii_mpll_set(adapter,
1042                                               VR_MII_BAUD_RATE_1P25GBPS);
1043 }
1044
1045 static int lan743x_is_sgmii_2_5G_mode(struct lan743x_adapter *adapter,
1046                                       bool *status)
1047 {
1048         int ret;
1049
1050         ret = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
1051                                  VR_MII_GEN2_4_MPLL_CTRL1);
1052         if (ret < 0)
1053                 return ret;
1054
1055         if (ret == VR_MII_MPLL_MULTIPLIER_125 ||
1056             ret == VR_MII_MPLL_MULTIPLIER_50)
1057                 *status = true;
1058         else
1059                 *status = false;
1060
1061         return 0;
1062 }
1063
1064 static int lan743x_sgmii_aneg_update(struct lan743x_adapter *adapter)
1065 {
1066         enum lan743x_sgmii_lsd lsd = adapter->sgmii_lsd;
1067         int mii_ctrl;
1068         int dgt_ctrl;
1069         int an_ctrl;
1070         int ret;
1071
1072         if (lsd == LINK_2500_MASTER || lsd == LINK_2500_SLAVE)
1073                 /* Switch to 2.5 Gbps */
1074                 ret = lan743x_sgmii_2_5G_mode_set(adapter, true);
1075         else
1076                 /* Switch to 10/100/1000 Mbps clock */
1077                 ret = lan743x_sgmii_2_5G_mode_set(adapter, false);
1078         if (ret < 0)
1079                 return ret;
1080
1081         /* Enable SGMII Auto NEG */
1082         mii_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, MII_BMCR);
1083         if (mii_ctrl < 0)
1084                 return mii_ctrl;
1085
1086         an_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, VR_MII_AN_CTRL);
1087         if (an_ctrl < 0)
1088                 return an_ctrl;
1089
1090         dgt_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
1091                                       VR_MII_DIG_CTRL1);
1092         if (dgt_ctrl < 0)
1093                 return dgt_ctrl;
1094
1095         if (lsd == LINK_2500_MASTER || lsd == LINK_2500_SLAVE) {
1096                 mii_ctrl &= ~(BMCR_ANENABLE | BMCR_ANRESTART | BMCR_SPEED100);
1097                 mii_ctrl |= BMCR_SPEED1000;
1098                 dgt_ctrl |= VR_MII_DIG_CTRL1_CL37_TMR_OVR_RIDE_;
1099                 dgt_ctrl &= ~VR_MII_DIG_CTRL1_MAC_AUTO_SW_;
1100                 /* In order for Auto-Negotiation to operate properly at
1101                  * 2.5 Gbps the 1.6ms link timer values must be adjusted
1102                  * The VR_MII_LINK_TIMER_CTRL Register must be set to
1103                  * 16'h7A1 and The CL37_TMR_OVR_RIDE bit of the
1104                  * VR_MII_DIG_CTRL1 Register set to 1
1105                  */
1106                 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1107                                           VR_MII_LINK_TIMER_CTRL, 0x7A1);
1108                 if (ret < 0)
1109                         return ret;
1110         } else {
1111                 mii_ctrl |= (BMCR_ANENABLE | BMCR_ANRESTART);
1112                 an_ctrl &= ~VR_MII_AN_CTRL_SGMII_LINK_STS_;
1113                 dgt_ctrl &= ~VR_MII_DIG_CTRL1_CL37_TMR_OVR_RIDE_;
1114                 dgt_ctrl |= VR_MII_DIG_CTRL1_MAC_AUTO_SW_;
1115         }
1116
1117         ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR,
1118                                   mii_ctrl);
1119         if (ret < 0)
1120                 return ret;
1121
1122         ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1123                                   VR_MII_DIG_CTRL1, dgt_ctrl);
1124         if (ret < 0)
1125                 return ret;
1126
1127         return lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
1128                                   VR_MII_AN_CTRL, an_ctrl);
1129 }
1130
1131 static int lan743x_pcs_seq_state(struct lan743x_adapter *adapter, u8 state)
1132 {
1133         u8 wait_cnt = 0;
1134         u32 dig_sts;
1135
1136         do {
1137                 dig_sts = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
1138                                              VR_MII_DIG_STS);
1139                 if (((dig_sts & VR_MII_DIG_STS_PSEQ_STATE_MASK_) >>
1140                       VR_MII_DIG_STS_PSEQ_STATE_POS_) == state)
1141                         break;
1142                 usleep_range(1000, 2000);
1143         } while (wait_cnt++ < 10);
1144
1145         if (wait_cnt >= 10)
1146                 return -ETIMEDOUT;
1147
1148         return 0;
1149 }
1150
1151 static int lan743x_sgmii_config(struct lan743x_adapter *adapter)
1152 {
1153         struct net_device *netdev = adapter->netdev;
1154         struct phy_device *phydev = netdev->phydev;
1155         enum lan743x_sgmii_lsd lsd = POWER_DOWN;
1156         int mii_ctl;
1157         bool status;
1158         int ret;
1159
1160         switch (phydev->speed) {
1161         case SPEED_2500:
1162                 if (phydev->master_slave_state == MASTER_SLAVE_STATE_MASTER)
1163                         lsd = LINK_2500_MASTER;
1164                 else
1165                         lsd = LINK_2500_SLAVE;
1166                 break;
1167         case SPEED_1000:
1168                 if (phydev->master_slave_state == MASTER_SLAVE_STATE_MASTER)
1169                         lsd = LINK_1000_MASTER;
1170                 else
1171                         lsd = LINK_1000_SLAVE;
1172                 break;
1173         case SPEED_100:
1174                 if (phydev->duplex)
1175                         lsd = LINK_100FD;
1176                 else
1177                         lsd = LINK_100HD;
1178                 break;
1179         case SPEED_10:
1180                 if (phydev->duplex)
1181                         lsd = LINK_10FD;
1182                 else
1183                         lsd = LINK_10HD;
1184                 break;
1185         default:
1186                 netif_err(adapter, drv, adapter->netdev,
1187                           "Invalid speed %d\n", phydev->speed);
1188                 return -EINVAL;
1189         }
1190
1191         adapter->sgmii_lsd = lsd;
1192         ret = lan743x_sgmii_aneg_update(adapter);
1193         if (ret < 0) {
1194                 netif_err(adapter, drv, adapter->netdev,
1195                           "error %d SGMII cfg failed\n", ret);
1196                 return ret;
1197         }
1198
1199         ret = lan743x_is_sgmii_2_5G_mode(adapter, &status);
1200         if (ret < 0) {
1201                 netif_err(adapter, drv, adapter->netdev,
1202                           "erro %d SGMII get mode failed\n", ret);
1203                 return ret;
1204         }
1205
1206         if (status)
1207                 netif_dbg(adapter, drv, adapter->netdev,
1208                           "SGMII 2.5G mode enable\n");
1209         else
1210                 netif_dbg(adapter, drv, adapter->netdev,
1211                           "SGMII 1G mode enable\n");
1212
1213         /* SGMII/1000/2500BASE-X PCS power down */
1214         mii_ctl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, MII_BMCR);
1215         if (mii_ctl < 0)
1216                 return mii_ctl;
1217
1218         mii_ctl |= BMCR_PDOWN;
1219         ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR, mii_ctl);
1220         if (ret < 0)
1221                 return ret;
1222
1223         ret = lan743x_pcs_seq_state(adapter, PCS_POWER_STATE_DOWN);
1224         if (ret < 0)
1225                 return ret;
1226
1227         /* SGMII/1000/2500BASE-X PCS power up */
1228         mii_ctl &= ~BMCR_PDOWN;
1229         ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR, mii_ctl);
1230         if (ret < 0)
1231                 return ret;
1232
1233         ret = lan743x_pcs_seq_state(adapter, PCS_POWER_STATE_UP);
1234         if (ret < 0)
1235                 return ret;
1236
1237         return 0;
1238 }
1239
1240 static void lan743x_mac_set_address(struct lan743x_adapter *adapter,
1241                                     u8 *addr)
1242 {
1243         u32 addr_lo, addr_hi;
1244
1245         addr_lo = addr[0] |
1246                 addr[1] << 8 |
1247                 addr[2] << 16 |
1248                 addr[3] << 24;
1249         addr_hi = addr[4] |
1250                 addr[5] << 8;
1251         lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo);
1252         lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi);
1253
1254         ether_addr_copy(adapter->mac_address, addr);
1255         netif_info(adapter, drv, adapter->netdev,
1256                    "MAC address set to %pM\n", addr);
1257 }
1258
1259 static int lan743x_mac_init(struct lan743x_adapter *adapter)
1260 {
1261         bool mac_address_valid = true;
1262         struct net_device *netdev;
1263         u32 mac_addr_hi = 0;
1264         u32 mac_addr_lo = 0;
1265         u32 data;
1266
1267         netdev = adapter->netdev;
1268
1269         /* disable auto duplex, and speed detection. Phylib does that */
1270         data = lan743x_csr_read(adapter, MAC_CR);
1271         data &= ~(MAC_CR_ADD_ | MAC_CR_ASD_);
1272         data |= MAC_CR_CNTR_RST_;
1273         lan743x_csr_write(adapter, MAC_CR, data);
1274
1275         if (!is_valid_ether_addr(adapter->mac_address)) {
1276                 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH);
1277                 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL);
1278                 adapter->mac_address[0] = mac_addr_lo & 0xFF;
1279                 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF;
1280                 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF;
1281                 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF;
1282                 adapter->mac_address[4] = mac_addr_hi & 0xFF;
1283                 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF;
1284
1285                 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) &&
1286                     mac_addr_lo == 0xFFFFFFFF) {
1287                         mac_address_valid = false;
1288                 } else if (!is_valid_ether_addr(adapter->mac_address)) {
1289                         mac_address_valid = false;
1290                 }
1291
1292                 if (!mac_address_valid)
1293                         eth_random_addr(adapter->mac_address);
1294         }
1295         lan743x_mac_set_address(adapter, adapter->mac_address);
1296         eth_hw_addr_set(netdev, adapter->mac_address);
1297
1298         return 0;
1299 }
1300
1301 static int lan743x_mac_open(struct lan743x_adapter *adapter)
1302 {
1303         u32 temp;
1304
1305         temp = lan743x_csr_read(adapter, MAC_RX);
1306         lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_);
1307         temp = lan743x_csr_read(adapter, MAC_TX);
1308         lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_);
1309         return 0;
1310 }
1311
1312 static void lan743x_mac_close(struct lan743x_adapter *adapter)
1313 {
1314         u32 temp;
1315
1316         temp = lan743x_csr_read(adapter, MAC_TX);
1317         temp &= ~MAC_TX_TXEN_;
1318         lan743x_csr_write(adapter, MAC_TX, temp);
1319         lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_,
1320                                  1, 1000, 20000, 100);
1321
1322         temp = lan743x_csr_read(adapter, MAC_RX);
1323         temp &= ~MAC_RX_RXEN_;
1324         lan743x_csr_write(adapter, MAC_RX, temp);
1325         lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
1326                                  1, 1000, 20000, 100);
1327 }
1328
1329 static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter,
1330                                               bool tx_enable, bool rx_enable)
1331 {
1332         u32 flow_setting = 0;
1333
1334         /* set maximum pause time because when fifo space frees
1335          * up a zero value pause frame will be sent to release the pause
1336          */
1337         flow_setting = MAC_FLOW_CR_FCPT_MASK_;
1338         if (tx_enable)
1339                 flow_setting |= MAC_FLOW_CR_TX_FCEN_;
1340         if (rx_enable)
1341                 flow_setting |= MAC_FLOW_CR_RX_FCEN_;
1342         lan743x_csr_write(adapter, MAC_FLOW, flow_setting);
1343 }
1344
1345 static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu)
1346 {
1347         int enabled = 0;
1348         u32 mac_rx = 0;
1349
1350         mac_rx = lan743x_csr_read(adapter, MAC_RX);
1351         if (mac_rx & MAC_RX_RXEN_) {
1352                 enabled = 1;
1353                 if (mac_rx & MAC_RX_RXD_) {
1354                         lan743x_csr_write(adapter, MAC_RX, mac_rx);
1355                         mac_rx &= ~MAC_RX_RXD_;
1356                 }
1357                 mac_rx &= ~MAC_RX_RXEN_;
1358                 lan743x_csr_write(adapter, MAC_RX, mac_rx);
1359                 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
1360                                          1, 1000, 20000, 100);
1361                 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_);
1362         }
1363
1364         mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_);
1365         mac_rx |= (((new_mtu + ETH_HLEN + ETH_FCS_LEN)
1366                   << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_);
1367         lan743x_csr_write(adapter, MAC_RX, mac_rx);
1368
1369         if (enabled) {
1370                 mac_rx |= MAC_RX_RXEN_;
1371                 lan743x_csr_write(adapter, MAC_RX, mac_rx);
1372         }
1373         return 0;
1374 }
1375
1376 /* PHY */
1377 static int lan743x_phy_reset(struct lan743x_adapter *adapter)
1378 {
1379         u32 data;
1380
1381         /* Only called with in probe, and before mdiobus_register */
1382
1383         data = lan743x_csr_read(adapter, PMT_CTL);
1384         data |= PMT_CTL_ETH_PHY_RST_;
1385         lan743x_csr_write(adapter, PMT_CTL, data);
1386
1387         return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data,
1388                                   (!(data & PMT_CTL_ETH_PHY_RST_) &&
1389                                   (data & PMT_CTL_READY_)),
1390                                   50000, 1000000);
1391 }
1392
1393 static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter,
1394                                            u16 local_adv, u16 remote_adv)
1395 {
1396         struct lan743x_phy *phy = &adapter->phy;
1397         u8 cap;
1398
1399         if (phy->fc_autoneg)
1400                 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv);
1401         else
1402                 cap = phy->fc_request_control;
1403
1404         lan743x_mac_flow_ctrl_set_enables(adapter,
1405                                           cap & FLOW_CTRL_TX,
1406                                           cap & FLOW_CTRL_RX);
1407 }
1408
1409 static int lan743x_phy_init(struct lan743x_adapter *adapter)
1410 {
1411         return lan743x_phy_reset(adapter);
1412 }
1413
1414 static void lan743x_phy_link_status_change(struct net_device *netdev)
1415 {
1416         struct lan743x_adapter *adapter = netdev_priv(netdev);
1417         struct phy_device *phydev = netdev->phydev;
1418         u32 data;
1419
1420         phy_print_status(phydev);
1421         if (phydev->state == PHY_RUNNING) {
1422                 int remote_advertisement = 0;
1423                 int local_advertisement = 0;
1424
1425                 data = lan743x_csr_read(adapter, MAC_CR);
1426
1427                 /* set interface mode */
1428                 if (phy_interface_is_rgmii(phydev))
1429                         /* RGMII */
1430                         data &= ~MAC_CR_MII_EN_;
1431                 else
1432                         /* GMII */
1433                         data |= MAC_CR_MII_EN_;
1434
1435                 /* set duplex mode */
1436                 if (phydev->duplex)
1437                         data |= MAC_CR_DPX_;
1438                 else
1439                         data &= ~MAC_CR_DPX_;
1440
1441                 /* set bus speed */
1442                 switch (phydev->speed) {
1443                 case SPEED_10:
1444                         data &= ~MAC_CR_CFG_H_;
1445                         data &= ~MAC_CR_CFG_L_;
1446                 break;
1447                 case SPEED_100:
1448                         data &= ~MAC_CR_CFG_H_;
1449                         data |= MAC_CR_CFG_L_;
1450                 break;
1451                 case SPEED_1000:
1452                         data |= MAC_CR_CFG_H_;
1453                         data &= ~MAC_CR_CFG_L_;
1454                 break;
1455                 case SPEED_2500:
1456                         data |= MAC_CR_CFG_H_;
1457                         data |= MAC_CR_CFG_L_;
1458                 break;
1459                 }
1460                 lan743x_csr_write(adapter, MAC_CR, data);
1461
1462                 local_advertisement =
1463                         linkmode_adv_to_mii_adv_t(phydev->advertising);
1464                 remote_advertisement =
1465                         linkmode_adv_to_mii_adv_t(phydev->lp_advertising);
1466
1467                 lan743x_phy_update_flowcontrol(adapter, local_advertisement,
1468                                                remote_advertisement);
1469                 lan743x_ptp_update_latency(adapter, phydev->speed);
1470                 if (phydev->interface == PHY_INTERFACE_MODE_SGMII ||
1471                     phydev->interface == PHY_INTERFACE_MODE_1000BASEX ||
1472                     phydev->interface == PHY_INTERFACE_MODE_2500BASEX)
1473                         lan743x_sgmii_config(adapter);
1474         }
1475 }
1476
1477 static void lan743x_phy_close(struct lan743x_adapter *adapter)
1478 {
1479         struct net_device *netdev = adapter->netdev;
1480
1481         phy_stop(netdev->phydev);
1482         phy_disconnect(netdev->phydev);
1483         netdev->phydev = NULL;
1484 }
1485
1486 static int lan743x_phy_open(struct lan743x_adapter *adapter)
1487 {
1488         struct net_device *netdev = adapter->netdev;
1489         struct lan743x_phy *phy = &adapter->phy;
1490         struct phy_device *phydev;
1491         int ret = -EIO;
1492
1493         /* try devicetree phy, or fixed link */
1494         phydev = of_phy_get_and_connect(netdev, adapter->pdev->dev.of_node,
1495                                         lan743x_phy_link_status_change);
1496
1497         if (!phydev) {
1498                 /* try internal phy */
1499                 phydev = phy_find_first(adapter->mdiobus);
1500                 if (!phydev)
1501                         goto return_error;
1502
1503                 if (adapter->is_pci11x1x)
1504                         ret = phy_connect_direct(netdev, phydev,
1505                                                  lan743x_phy_link_status_change,
1506                                                  PHY_INTERFACE_MODE_RGMII);
1507                 else
1508                         ret = phy_connect_direct(netdev, phydev,
1509                                                  lan743x_phy_link_status_change,
1510                                                  PHY_INTERFACE_MODE_GMII);
1511                 if (ret)
1512                         goto return_error;
1513         }
1514
1515         /* MAC doesn't support 1000T Half */
1516         phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
1517
1518         /* support both flow controls */
1519         phy_support_asym_pause(phydev);
1520         phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
1521         phy->fc_autoneg = phydev->autoneg;
1522
1523         phy_start(phydev);
1524         phy_start_aneg(phydev);
1525         phy_attached_info(phydev);
1526         return 0;
1527
1528 return_error:
1529         return ret;
1530 }
1531
1532 static void lan743x_rfe_open(struct lan743x_adapter *adapter)
1533 {
1534         lan743x_csr_write(adapter, RFE_RSS_CFG,
1535                 RFE_RSS_CFG_UDP_IPV6_EX_ |
1536                 RFE_RSS_CFG_TCP_IPV6_EX_ |
1537                 RFE_RSS_CFG_IPV6_EX_ |
1538                 RFE_RSS_CFG_UDP_IPV6_ |
1539                 RFE_RSS_CFG_TCP_IPV6_ |
1540                 RFE_RSS_CFG_IPV6_ |
1541                 RFE_RSS_CFG_UDP_IPV4_ |
1542                 RFE_RSS_CFG_TCP_IPV4_ |
1543                 RFE_RSS_CFG_IPV4_ |
1544                 RFE_RSS_CFG_VALID_HASH_BITS_ |
1545                 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ |
1546                 RFE_RSS_CFG_RSS_HASH_STORE_ |
1547                 RFE_RSS_CFG_RSS_ENABLE_);
1548 }
1549
1550 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter)
1551 {
1552         u8 *mac_addr;
1553         u32 mac_addr_hi = 0;
1554         u32 mac_addr_lo = 0;
1555
1556         /* Add mac address to perfect Filter */
1557         mac_addr = adapter->mac_address;
1558         mac_addr_lo = ((((u32)(mac_addr[0])) << 0) |
1559                       (((u32)(mac_addr[1])) << 8) |
1560                       (((u32)(mac_addr[2])) << 16) |
1561                       (((u32)(mac_addr[3])) << 24));
1562         mac_addr_hi = ((((u32)(mac_addr[4])) << 0) |
1563                       (((u32)(mac_addr[5])) << 8));
1564
1565         lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo);
1566         lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0),
1567                           mac_addr_hi | RFE_ADDR_FILT_HI_VALID_);
1568 }
1569
1570 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter)
1571 {
1572         struct net_device *netdev = adapter->netdev;
1573         u32 hash_table[DP_SEL_VHF_HASH_LEN];
1574         u32 rfctl;
1575         u32 data;
1576
1577         rfctl = lan743x_csr_read(adapter, RFE_CTL);
1578         rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ |
1579                  RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
1580         rfctl |= RFE_CTL_AB_;
1581         if (netdev->flags & IFF_PROMISC) {
1582                 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_;
1583         } else {
1584                 if (netdev->flags & IFF_ALLMULTI)
1585                         rfctl |= RFE_CTL_AM_;
1586         }
1587
1588         memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32));
1589         if (netdev_mc_count(netdev)) {
1590                 struct netdev_hw_addr *ha;
1591                 int i;
1592
1593                 rfctl |= RFE_CTL_DA_PERFECT_;
1594                 i = 1;
1595                 netdev_for_each_mc_addr(ha, netdev) {
1596                         /* set first 32 into Perfect Filter */
1597                         if (i < 33) {
1598                                 lan743x_csr_write(adapter,
1599                                                   RFE_ADDR_FILT_HI(i), 0);
1600                                 data = ha->addr[3];
1601                                 data = ha->addr[2] | (data << 8);
1602                                 data = ha->addr[1] | (data << 8);
1603                                 data = ha->addr[0] | (data << 8);
1604                                 lan743x_csr_write(adapter,
1605                                                   RFE_ADDR_FILT_LO(i), data);
1606                                 data = ha->addr[5];
1607                                 data = ha->addr[4] | (data << 8);
1608                                 data |= RFE_ADDR_FILT_HI_VALID_;
1609                                 lan743x_csr_write(adapter,
1610                                                   RFE_ADDR_FILT_HI(i), data);
1611                         } else {
1612                                 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >>
1613                                              23) & 0x1FF;
1614                                 hash_table[bitnum / 32] |= (1 << (bitnum % 32));
1615                                 rfctl |= RFE_CTL_MCAST_HASH_;
1616                         }
1617                         i++;
1618                 }
1619         }
1620
1621         lan743x_dp_write(adapter, DP_SEL_RFE_RAM,
1622                          DP_SEL_VHF_VLAN_LEN,
1623                          DP_SEL_VHF_HASH_LEN, hash_table);
1624         lan743x_csr_write(adapter, RFE_CTL, rfctl);
1625 }
1626
1627 static int lan743x_dmac_init(struct lan743x_adapter *adapter)
1628 {
1629         u32 data = 0;
1630
1631         lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_);
1632         lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_,
1633                                  0, 1000, 20000, 100);
1634         switch (DEFAULT_DMA_DESCRIPTOR_SPACING) {
1635         case DMA_DESCRIPTOR_SPACING_16:
1636                 data = DMAC_CFG_MAX_DSPACE_16_;
1637                 break;
1638         case DMA_DESCRIPTOR_SPACING_32:
1639                 data = DMAC_CFG_MAX_DSPACE_32_;
1640                 break;
1641         case DMA_DESCRIPTOR_SPACING_64:
1642                 data = DMAC_CFG_MAX_DSPACE_64_;
1643                 break;
1644         case DMA_DESCRIPTOR_SPACING_128:
1645                 data = DMAC_CFG_MAX_DSPACE_128_;
1646                 break;
1647         default:
1648                 return -EPERM;
1649         }
1650         if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
1651                 data |= DMAC_CFG_COAL_EN_;
1652         data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_;
1653         data |= DMAC_CFG_MAX_READ_REQ_SET_(6);
1654         lan743x_csr_write(adapter, DMAC_CFG, data);
1655         data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1);
1656         data |= DMAC_COAL_CFG_TIMER_TX_START_;
1657         data |= DMAC_COAL_CFG_FLUSH_INTS_;
1658         data |= DMAC_COAL_CFG_INT_EXIT_COAL_;
1659         data |= DMAC_COAL_CFG_CSR_EXIT_COAL_;
1660         data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A);
1661         data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C);
1662         lan743x_csr_write(adapter, DMAC_COAL_CFG, data);
1663         data = DMAC_OBFF_TX_THRES_SET_(0x08);
1664         data |= DMAC_OBFF_RX_THRES_SET_(0x0A);
1665         lan743x_csr_write(adapter, DMAC_OBFF_CFG, data);
1666         return 0;
1667 }
1668
1669 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter,
1670                                      int tx_channel)
1671 {
1672         u32 dmac_cmd = 0;
1673
1674         dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1675         return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1676                                       DMAC_CMD_START_T_(tx_channel)),
1677                                       (dmac_cmd &
1678                                       DMAC_CMD_STOP_T_(tx_channel)));
1679 }
1680
1681 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter,
1682                                              int tx_channel)
1683 {
1684         int timeout = 100;
1685         int result = 0;
1686
1687         while (timeout &&
1688                ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) ==
1689                DMAC_CHANNEL_STATE_STOP_PENDING)) {
1690                 usleep_range(1000, 20000);
1691                 timeout--;
1692         }
1693         if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1694                 result = -ENODEV;
1695         return result;
1696 }
1697
1698 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter,
1699                                      int rx_channel)
1700 {
1701         u32 dmac_cmd = 0;
1702
1703         dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
1704         return DMAC_CHANNEL_STATE_SET((dmac_cmd &
1705                                       DMAC_CMD_START_R_(rx_channel)),
1706                                       (dmac_cmd &
1707                                       DMAC_CMD_STOP_R_(rx_channel)));
1708 }
1709
1710 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter,
1711                                              int rx_channel)
1712 {
1713         int timeout = 100;
1714         int result = 0;
1715
1716         while (timeout &&
1717                ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) ==
1718                DMAC_CHANNEL_STATE_STOP_PENDING)) {
1719                 usleep_range(1000, 20000);
1720                 timeout--;
1721         }
1722         if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
1723                 result = -ENODEV;
1724         return result;
1725 }
1726
1727 static void lan743x_tx_release_desc(struct lan743x_tx *tx,
1728                                     int descriptor_index, bool cleanup)
1729 {
1730         struct lan743x_tx_buffer_info *buffer_info = NULL;
1731         struct lan743x_tx_descriptor *descriptor = NULL;
1732         u32 descriptor_type = 0;
1733         bool ignore_sync;
1734
1735         descriptor = &tx->ring_cpu_ptr[descriptor_index];
1736         buffer_info = &tx->buffer_info[descriptor_index];
1737         if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE))
1738                 goto done;
1739
1740         descriptor_type = le32_to_cpu(descriptor->data0) &
1741                           TX_DESC_DATA0_DTYPE_MASK_;
1742         if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_)
1743                 goto clean_up_data_descriptor;
1744         else
1745                 goto clear_active;
1746
1747 clean_up_data_descriptor:
1748         if (buffer_info->dma_ptr) {
1749                 if (buffer_info->flags &
1750                     TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) {
1751                         dma_unmap_page(&tx->adapter->pdev->dev,
1752                                        buffer_info->dma_ptr,
1753                                        buffer_info->buffer_length,
1754                                        DMA_TO_DEVICE);
1755                 } else {
1756                         dma_unmap_single(&tx->adapter->pdev->dev,
1757                                          buffer_info->dma_ptr,
1758                                          buffer_info->buffer_length,
1759                                          DMA_TO_DEVICE);
1760                 }
1761                 buffer_info->dma_ptr = 0;
1762                 buffer_info->buffer_length = 0;
1763         }
1764         if (!buffer_info->skb)
1765                 goto clear_active;
1766
1767         if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) {
1768                 dev_kfree_skb_any(buffer_info->skb);
1769                 goto clear_skb;
1770         }
1771
1772         if (cleanup) {
1773                 lan743x_ptp_unrequest_tx_timestamp(tx->adapter);
1774                 dev_kfree_skb_any(buffer_info->skb);
1775         } else {
1776                 ignore_sync = (buffer_info->flags &
1777                                TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0;
1778                 lan743x_ptp_tx_timestamp_skb(tx->adapter,
1779                                              buffer_info->skb, ignore_sync);
1780         }
1781
1782 clear_skb:
1783         buffer_info->skb = NULL;
1784
1785 clear_active:
1786         buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE;
1787
1788 done:
1789         memset(buffer_info, 0, sizeof(*buffer_info));
1790         memset(descriptor, 0, sizeof(*descriptor));
1791 }
1792
1793 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index)
1794 {
1795         return ((++index) % tx->ring_size);
1796 }
1797
1798 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx)
1799 {
1800         while (le32_to_cpu(*tx->head_cpu_ptr) != (tx->last_head)) {
1801                 lan743x_tx_release_desc(tx, tx->last_head, false);
1802                 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1803         }
1804 }
1805
1806 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx)
1807 {
1808         u32 original_head = 0;
1809
1810         original_head = tx->last_head;
1811         do {
1812                 lan743x_tx_release_desc(tx, tx->last_head, true);
1813                 tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
1814         } while (tx->last_head != original_head);
1815         memset(tx->ring_cpu_ptr, 0,
1816                sizeof(*tx->ring_cpu_ptr) * (tx->ring_size));
1817         memset(tx->buffer_info, 0,
1818                sizeof(*tx->buffer_info) * (tx->ring_size));
1819 }
1820
1821 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx,
1822                                    struct sk_buff *skb)
1823 {
1824         int result = 1; /* 1 for the main skb buffer */
1825         int nr_frags = 0;
1826
1827         if (skb_is_gso(skb))
1828                 result++; /* requires an extension descriptor */
1829         nr_frags = skb_shinfo(skb)->nr_frags;
1830         result += nr_frags; /* 1 for each fragment buffer */
1831         return result;
1832 }
1833
1834 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx)
1835 {
1836         int last_head = tx->last_head;
1837         int last_tail = tx->last_tail;
1838
1839         if (last_tail >= last_head)
1840                 return tx->ring_size - last_tail + last_head - 1;
1841         else
1842                 return last_head - last_tail - 1;
1843 }
1844
1845 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
1846                                       bool enable_timestamping,
1847                                       bool enable_onestep_sync)
1848 {
1849         if (enable_timestamping)
1850                 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED;
1851         else
1852                 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED;
1853         if (enable_onestep_sync)
1854                 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC;
1855         else
1856                 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC;
1857 }
1858
1859 static int lan743x_tx_frame_start(struct lan743x_tx *tx,
1860                                   unsigned char *first_buffer,
1861                                   unsigned int first_buffer_length,
1862                                   unsigned int frame_length,
1863                                   bool time_stamp,
1864                                   bool check_sum)
1865 {
1866         /* called only from within lan743x_tx_xmit_frame.
1867          * assuming tx->ring_lock has already been acquired.
1868          */
1869         struct lan743x_tx_descriptor *tx_descriptor = NULL;
1870         struct lan743x_tx_buffer_info *buffer_info = NULL;
1871         struct lan743x_adapter *adapter = tx->adapter;
1872         struct device *dev = &adapter->pdev->dev;
1873         dma_addr_t dma_ptr;
1874
1875         tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS;
1876         tx->frame_first = tx->last_tail;
1877         tx->frame_tail = tx->frame_first;
1878
1879         tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1880         buffer_info = &tx->buffer_info[tx->frame_tail];
1881         dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length,
1882                                  DMA_TO_DEVICE);
1883         if (dma_mapping_error(dev, dma_ptr))
1884                 return -ENOMEM;
1885
1886         tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr));
1887         tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr));
1888         tx_descriptor->data3 = cpu_to_le32((frame_length << 16) &
1889                 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_);
1890
1891         buffer_info->skb = NULL;
1892         buffer_info->dma_ptr = dma_ptr;
1893         buffer_info->buffer_length = first_buffer_length;
1894         buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1895
1896         tx->frame_data0 = (first_buffer_length &
1897                 TX_DESC_DATA0_BUF_LENGTH_MASK_) |
1898                 TX_DESC_DATA0_DTYPE_DATA_ |
1899                 TX_DESC_DATA0_FS_ |
1900                 TX_DESC_DATA0_FCS_;
1901         if (time_stamp)
1902                 tx->frame_data0 |= TX_DESC_DATA0_TSE_;
1903
1904         if (check_sum)
1905                 tx->frame_data0 |= TX_DESC_DATA0_ICE_ |
1906                                    TX_DESC_DATA0_IPE_ |
1907                                    TX_DESC_DATA0_TPE_;
1908
1909         /* data0 will be programmed in one of other frame assembler functions */
1910         return 0;
1911 }
1912
1913 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx,
1914                                      unsigned int frame_length,
1915                                      int nr_frags)
1916 {
1917         /* called only from within lan743x_tx_xmit_frame.
1918          * assuming tx->ring_lock has already been acquired.
1919          */
1920         struct lan743x_tx_descriptor *tx_descriptor = NULL;
1921         struct lan743x_tx_buffer_info *buffer_info = NULL;
1922
1923         /* wrap up previous descriptor */
1924         tx->frame_data0 |= TX_DESC_DATA0_EXT_;
1925         if (nr_frags <= 0) {
1926                 tx->frame_data0 |= TX_DESC_DATA0_LS_;
1927                 tx->frame_data0 |= TX_DESC_DATA0_IOC_;
1928         }
1929         tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1930         tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
1931
1932         /* move to next descriptor */
1933         tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1934         tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1935         buffer_info = &tx->buffer_info[tx->frame_tail];
1936
1937         /* add extension descriptor */
1938         tx_descriptor->data1 = 0;
1939         tx_descriptor->data2 = 0;
1940         tx_descriptor->data3 = 0;
1941
1942         buffer_info->skb = NULL;
1943         buffer_info->dma_ptr = 0;
1944         buffer_info->buffer_length = 0;
1945         buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
1946
1947         tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) |
1948                           TX_DESC_DATA0_DTYPE_EXT_ |
1949                           TX_DESC_DATA0_EXT_LSO_;
1950
1951         /* data0 will be programmed in one of other frame assembler functions */
1952 }
1953
1954 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx,
1955                                          const skb_frag_t *fragment,
1956                                          unsigned int frame_length)
1957 {
1958         /* called only from within lan743x_tx_xmit_frame
1959          * assuming tx->ring_lock has already been acquired
1960          */
1961         struct lan743x_tx_descriptor *tx_descriptor = NULL;
1962         struct lan743x_tx_buffer_info *buffer_info = NULL;
1963         struct lan743x_adapter *adapter = tx->adapter;
1964         struct device *dev = &adapter->pdev->dev;
1965         unsigned int fragment_length = 0;
1966         dma_addr_t dma_ptr;
1967
1968         fragment_length = skb_frag_size(fragment);
1969         if (!fragment_length)
1970                 return 0;
1971
1972         /* wrap up previous descriptor */
1973         tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1974         tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
1975
1976         /* move to next descriptor */
1977         tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
1978         tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
1979         buffer_info = &tx->buffer_info[tx->frame_tail];
1980         dma_ptr = skb_frag_dma_map(dev, fragment,
1981                                    0, fragment_length,
1982                                    DMA_TO_DEVICE);
1983         if (dma_mapping_error(dev, dma_ptr)) {
1984                 int desc_index;
1985
1986                 /* cleanup all previously setup descriptors */
1987                 desc_index = tx->frame_first;
1988                 while (desc_index != tx->frame_tail) {
1989                         lan743x_tx_release_desc(tx, desc_index, true);
1990                         desc_index = lan743x_tx_next_index(tx, desc_index);
1991                 }
1992                 dma_wmb();
1993                 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
1994                 tx->frame_first = 0;
1995                 tx->frame_data0 = 0;
1996                 tx->frame_tail = 0;
1997                 return -ENOMEM;
1998         }
1999
2000         tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr));
2001         tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr));
2002         tx_descriptor->data3 = cpu_to_le32((frame_length << 16) &
2003                                TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_);
2004
2005         buffer_info->skb = NULL;
2006         buffer_info->dma_ptr = dma_ptr;
2007         buffer_info->buffer_length = fragment_length;
2008         buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
2009         buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT;
2010
2011         tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) |
2012                           TX_DESC_DATA0_DTYPE_DATA_ |
2013                           TX_DESC_DATA0_FCS_;
2014
2015         /* data0 will be programmed in one of other frame assembler functions */
2016         return 0;
2017 }
2018
2019 static void lan743x_tx_frame_end(struct lan743x_tx *tx,
2020                                  struct sk_buff *skb,
2021                                  bool time_stamp,
2022                                  bool ignore_sync)
2023 {
2024         /* called only from within lan743x_tx_xmit_frame
2025          * assuming tx->ring_lock has already been acquired
2026          */
2027         struct lan743x_tx_descriptor *tx_descriptor = NULL;
2028         struct lan743x_tx_buffer_info *buffer_info = NULL;
2029         struct lan743x_adapter *adapter = tx->adapter;
2030         u32 tx_tail_flags = 0;
2031
2032         /* wrap up previous descriptor */
2033         if ((tx->frame_data0 & TX_DESC_DATA0_DTYPE_MASK_) ==
2034             TX_DESC_DATA0_DTYPE_DATA_) {
2035                 tx->frame_data0 |= TX_DESC_DATA0_LS_;
2036                 tx->frame_data0 |= TX_DESC_DATA0_IOC_;
2037         }
2038
2039         tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
2040         buffer_info = &tx->buffer_info[tx->frame_tail];
2041         buffer_info->skb = skb;
2042         if (time_stamp)
2043                 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED;
2044         if (ignore_sync)
2045                 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC;
2046
2047         tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
2048         tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
2049         tx->last_tail = tx->frame_tail;
2050
2051         dma_wmb();
2052
2053         if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
2054                 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_;
2055         if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)
2056                 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ |
2057                 TX_TAIL_SET_TOP_INT_EN_;
2058
2059         lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
2060                           tx_tail_flags | tx->frame_tail);
2061         tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
2062 }
2063
2064 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
2065                                          struct sk_buff *skb)
2066 {
2067         int required_number_of_descriptors = 0;
2068         unsigned int start_frame_length = 0;
2069         unsigned int frame_length = 0;
2070         unsigned int head_length = 0;
2071         unsigned long irq_flags = 0;
2072         bool do_timestamp = false;
2073         bool ignore_sync = false;
2074         int nr_frags = 0;
2075         bool gso = false;
2076         int j;
2077
2078         required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb);
2079
2080         spin_lock_irqsave(&tx->ring_lock, irq_flags);
2081         if (required_number_of_descriptors >
2082                 lan743x_tx_get_avail_desc(tx)) {
2083                 if (required_number_of_descriptors > (tx->ring_size - 1)) {
2084                         dev_kfree_skb_irq(skb);
2085                 } else {
2086                         /* save to overflow buffer */
2087                         tx->overflow_skb = skb;
2088                         netif_stop_queue(tx->adapter->netdev);
2089                 }
2090                 goto unlock;
2091         }
2092
2093         /* space available, transmit skb  */
2094         if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
2095             (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) &&
2096             (lan743x_ptp_request_tx_timestamp(tx->adapter))) {
2097                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
2098                 do_timestamp = true;
2099                 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC)
2100                         ignore_sync = true;
2101         }
2102         head_length = skb_headlen(skb);
2103         frame_length = skb_pagelen(skb);
2104         nr_frags = skb_shinfo(skb)->nr_frags;
2105         start_frame_length = frame_length;
2106         gso = skb_is_gso(skb);
2107         if (gso) {
2108                 start_frame_length = max(skb_shinfo(skb)->gso_size,
2109                                          (unsigned short)8);
2110         }
2111
2112         if (lan743x_tx_frame_start(tx,
2113                                    skb->data, head_length,
2114                                    start_frame_length,
2115                                    do_timestamp,
2116                                    skb->ip_summed == CHECKSUM_PARTIAL)) {
2117                 dev_kfree_skb_irq(skb);
2118                 goto unlock;
2119         }
2120         tx->frame_count++;
2121
2122         if (gso)
2123                 lan743x_tx_frame_add_lso(tx, frame_length, nr_frags);
2124
2125         if (nr_frags <= 0)
2126                 goto finish;
2127
2128         for (j = 0; j < nr_frags; j++) {
2129                 const skb_frag_t *frag = &(skb_shinfo(skb)->frags[j]);
2130
2131                 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) {
2132                         /* upon error no need to call
2133                          *      lan743x_tx_frame_end
2134                          * frame assembler clean up was performed inside
2135                          *      lan743x_tx_frame_add_fragment
2136                          */
2137                         dev_kfree_skb_irq(skb);
2138                         goto unlock;
2139                 }
2140         }
2141
2142 finish:
2143         lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync);
2144
2145 unlock:
2146         spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
2147         return NETDEV_TX_OK;
2148 }
2149
2150 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight)
2151 {
2152         struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi);
2153         struct lan743x_adapter *adapter = tx->adapter;
2154         bool start_transmitter = false;
2155         unsigned long irq_flags = 0;
2156         u32 ioc_bit = 0;
2157
2158         ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
2159         lan743x_csr_read(adapter, DMAC_INT_STS);
2160         if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C)
2161                 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit);
2162         spin_lock_irqsave(&tx->ring_lock, irq_flags);
2163
2164         /* clean up tx ring */
2165         lan743x_tx_release_completed_descriptors(tx);
2166         if (netif_queue_stopped(adapter->netdev)) {
2167                 if (tx->overflow_skb) {
2168                         if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <=
2169                                 lan743x_tx_get_avail_desc(tx))
2170                                 start_transmitter = true;
2171                 } else {
2172                         netif_wake_queue(adapter->netdev);
2173                 }
2174         }
2175         spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
2176
2177         if (start_transmitter) {
2178                 /* space is now available, transmit overflow skb */
2179                 lan743x_tx_xmit_frame(tx, tx->overflow_skb);
2180                 tx->overflow_skb = NULL;
2181                 netif_wake_queue(adapter->netdev);
2182         }
2183
2184         if (!napi_complete(napi))
2185                 goto done;
2186
2187         /* enable isr */
2188         lan743x_csr_write(adapter, INT_EN_SET,
2189                           INT_BIT_DMA_TX_(tx->channel_number));
2190         lan743x_csr_read(adapter, INT_STS);
2191
2192 done:
2193         return 0;
2194 }
2195
2196 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx)
2197 {
2198         if (tx->head_cpu_ptr) {
2199                 dma_free_coherent(&tx->adapter->pdev->dev,
2200                                   sizeof(*tx->head_cpu_ptr), tx->head_cpu_ptr,
2201                                   tx->head_dma_ptr);
2202                 tx->head_cpu_ptr = NULL;
2203                 tx->head_dma_ptr = 0;
2204         }
2205         kfree(tx->buffer_info);
2206         tx->buffer_info = NULL;
2207
2208         if (tx->ring_cpu_ptr) {
2209                 dma_free_coherent(&tx->adapter->pdev->dev,
2210                                   tx->ring_allocation_size, tx->ring_cpu_ptr,
2211                                   tx->ring_dma_ptr);
2212                 tx->ring_allocation_size = 0;
2213                 tx->ring_cpu_ptr = NULL;
2214                 tx->ring_dma_ptr = 0;
2215         }
2216         tx->ring_size = 0;
2217 }
2218
2219 static int lan743x_tx_ring_init(struct lan743x_tx *tx)
2220 {
2221         size_t ring_allocation_size = 0;
2222         void *cpu_ptr = NULL;
2223         dma_addr_t dma_ptr;
2224         int ret = -ENOMEM;
2225
2226         tx->ring_size = LAN743X_TX_RING_SIZE;
2227         if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) {
2228                 ret = -EINVAL;
2229                 goto cleanup;
2230         }
2231         if (dma_set_mask_and_coherent(&tx->adapter->pdev->dev,
2232                                       DMA_BIT_MASK(64))) {
2233                 dev_warn(&tx->adapter->pdev->dev,
2234                          "lan743x_: No suitable DMA available\n");
2235                 ret = -ENOMEM;
2236                 goto cleanup;
2237         }
2238         ring_allocation_size = ALIGN(tx->ring_size *
2239                                      sizeof(struct lan743x_tx_descriptor),
2240                                      PAGE_SIZE);
2241         dma_ptr = 0;
2242         cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev,
2243                                      ring_allocation_size, &dma_ptr, GFP_KERNEL);
2244         if (!cpu_ptr) {
2245                 ret = -ENOMEM;
2246                 goto cleanup;
2247         }
2248
2249         tx->ring_allocation_size = ring_allocation_size;
2250         tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr;
2251         tx->ring_dma_ptr = dma_ptr;
2252
2253         cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL);
2254         if (!cpu_ptr) {
2255                 ret = -ENOMEM;
2256                 goto cleanup;
2257         }
2258         tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr;
2259         dma_ptr = 0;
2260         cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev,
2261                                      sizeof(*tx->head_cpu_ptr), &dma_ptr,
2262                                      GFP_KERNEL);
2263         if (!cpu_ptr) {
2264                 ret = -ENOMEM;
2265                 goto cleanup;
2266         }
2267
2268         tx->head_cpu_ptr = cpu_ptr;
2269         tx->head_dma_ptr = dma_ptr;
2270         if (tx->head_dma_ptr & 0x3) {
2271                 ret = -ENOMEM;
2272                 goto cleanup;
2273         }
2274
2275         return 0;
2276
2277 cleanup:
2278         lan743x_tx_ring_cleanup(tx);
2279         return ret;
2280 }
2281
2282 static void lan743x_tx_close(struct lan743x_tx *tx)
2283 {
2284         struct lan743x_adapter *adapter = tx->adapter;
2285
2286         lan743x_csr_write(adapter,
2287                           DMAC_CMD,
2288                           DMAC_CMD_STOP_T_(tx->channel_number));
2289         lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number);
2290
2291         lan743x_csr_write(adapter,
2292                           DMAC_INT_EN_CLR,
2293                           DMAC_INT_BIT_TX_IOC_(tx->channel_number));
2294         lan743x_csr_write(adapter, INT_EN_CLR,
2295                           INT_BIT_DMA_TX_(tx->channel_number));
2296         napi_disable(&tx->napi);
2297         netif_napi_del(&tx->napi);
2298
2299         lan743x_csr_write(adapter, FCT_TX_CTL,
2300                           FCT_TX_CTL_DIS_(tx->channel_number));
2301         lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
2302                                  FCT_TX_CTL_EN_(tx->channel_number),
2303                                  0, 1000, 20000, 100);
2304
2305         lan743x_tx_release_all_descriptors(tx);
2306
2307         if (tx->overflow_skb) {
2308                 dev_kfree_skb(tx->overflow_skb);
2309                 tx->overflow_skb = NULL;
2310         }
2311
2312         lan743x_tx_ring_cleanup(tx);
2313 }
2314
2315 static int lan743x_tx_open(struct lan743x_tx *tx)
2316 {
2317         struct lan743x_adapter *adapter = NULL;
2318         u32 data = 0;
2319         int ret;
2320
2321         adapter = tx->adapter;
2322         ret = lan743x_tx_ring_init(tx);
2323         if (ret)
2324                 return ret;
2325
2326         /* initialize fifo */
2327         lan743x_csr_write(adapter, FCT_TX_CTL,
2328                           FCT_TX_CTL_RESET_(tx->channel_number));
2329         lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
2330                                  FCT_TX_CTL_RESET_(tx->channel_number),
2331                                  0, 1000, 20000, 100);
2332
2333         /* enable fifo */
2334         lan743x_csr_write(adapter, FCT_TX_CTL,
2335                           FCT_TX_CTL_EN_(tx->channel_number));
2336
2337         /* reset tx channel */
2338         lan743x_csr_write(adapter, DMAC_CMD,
2339                           DMAC_CMD_TX_SWR_(tx->channel_number));
2340         lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
2341                                  DMAC_CMD_TX_SWR_(tx->channel_number),
2342                                  0, 1000, 20000, 100);
2343
2344         /* Write TX_BASE_ADDR */
2345         lan743x_csr_write(adapter,
2346                           TX_BASE_ADDRH(tx->channel_number),
2347                           DMA_ADDR_HIGH32(tx->ring_dma_ptr));
2348         lan743x_csr_write(adapter,
2349                           TX_BASE_ADDRL(tx->channel_number),
2350                           DMA_ADDR_LOW32(tx->ring_dma_ptr));
2351
2352         /* Write TX_CFG_B */
2353         data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number));
2354         data &= ~TX_CFG_B_TX_RING_LEN_MASK_;
2355         data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_);
2356         if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
2357                 data |= TX_CFG_B_TDMABL_512_;
2358         lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data);
2359
2360         /* Write TX_CFG_A */
2361         data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_;
2362         if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
2363                 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_;
2364                 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10);
2365                 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04);
2366                 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07);
2367         }
2368         lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data);
2369
2370         /* Write TX_HEAD_WRITEBACK_ADDR */
2371         lan743x_csr_write(adapter,
2372                           TX_HEAD_WRITEBACK_ADDRH(tx->channel_number),
2373                           DMA_ADDR_HIGH32(tx->head_dma_ptr));
2374         lan743x_csr_write(adapter,
2375                           TX_HEAD_WRITEBACK_ADDRL(tx->channel_number),
2376                           DMA_ADDR_LOW32(tx->head_dma_ptr));
2377
2378         /* set last head */
2379         tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number));
2380
2381         /* write TX_TAIL */
2382         tx->last_tail = 0;
2383         lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
2384                           (u32)(tx->last_tail));
2385         tx->vector_flags = lan743x_intr_get_vector_flags(adapter,
2386                                                          INT_BIT_DMA_TX_
2387                                                          (tx->channel_number));
2388         netif_napi_add_tx_weight(adapter->netdev,
2389                                  &tx->napi, lan743x_tx_napi_poll,
2390                                  tx->ring_size - 1);
2391         napi_enable(&tx->napi);
2392
2393         data = 0;
2394         if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
2395                 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_;
2396         if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
2397                 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_;
2398         if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
2399                 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_;
2400         if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
2401                 data |= TX_CFG_C_TX_INT_EN_R2C_;
2402         lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data);
2403
2404         if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET))
2405                 lan743x_csr_write(adapter, INT_EN_SET,
2406                                   INT_BIT_DMA_TX_(tx->channel_number));
2407         lan743x_csr_write(adapter, DMAC_INT_EN_SET,
2408                           DMAC_INT_BIT_TX_IOC_(tx->channel_number));
2409
2410         /*  start dmac channel */
2411         lan743x_csr_write(adapter, DMAC_CMD,
2412                           DMAC_CMD_START_T_(tx->channel_number));
2413         return 0;
2414 }
2415
2416 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index)
2417 {
2418         return ((++index) % rx->ring_size);
2419 }
2420
2421 static void lan743x_rx_update_tail(struct lan743x_rx *rx, int index)
2422 {
2423         /* update the tail once per 8 descriptors */
2424         if ((index & 7) == 7)
2425                 lan743x_csr_write(rx->adapter, RX_TAIL(rx->channel_number),
2426                                   index);
2427 }
2428
2429 static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index,
2430                                         gfp_t gfp)
2431 {
2432         struct net_device *netdev = rx->adapter->netdev;
2433         struct device *dev = &rx->adapter->pdev->dev;
2434         struct lan743x_rx_buffer_info *buffer_info;
2435         unsigned int buffer_length, used_length;
2436         struct lan743x_rx_descriptor *descriptor;
2437         struct sk_buff *skb;
2438         dma_addr_t dma_ptr;
2439
2440         buffer_length = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + RX_HEAD_PADDING;
2441
2442         descriptor = &rx->ring_cpu_ptr[index];
2443         buffer_info = &rx->buffer_info[index];
2444         skb = __netdev_alloc_skb(netdev, buffer_length, gfp);
2445         if (!skb)
2446                 return -ENOMEM;
2447         dma_ptr = dma_map_single(dev, skb->data, buffer_length, DMA_FROM_DEVICE);
2448         if (dma_mapping_error(dev, dma_ptr)) {
2449                 dev_kfree_skb_any(skb);
2450                 return -ENOMEM;
2451         }
2452         if (buffer_info->dma_ptr) {
2453                 /* sync used area of buffer only */
2454                 if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_)
2455                         /* frame length is valid only if LS bit is set.
2456                          * it's a safe upper bound for the used area in this
2457                          * buffer.
2458                          */
2459                         used_length = min(RX_DESC_DATA0_FRAME_LENGTH_GET_
2460                                           (le32_to_cpu(descriptor->data0)),
2461                                           buffer_info->buffer_length);
2462                 else
2463                         used_length = buffer_info->buffer_length;
2464                 dma_sync_single_for_cpu(dev, buffer_info->dma_ptr,
2465                                         used_length,
2466                                         DMA_FROM_DEVICE);
2467                 dma_unmap_single_attrs(dev, buffer_info->dma_ptr,
2468                                        buffer_info->buffer_length,
2469                                        DMA_FROM_DEVICE,
2470                                        DMA_ATTR_SKIP_CPU_SYNC);
2471         }
2472
2473         buffer_info->skb = skb;
2474         buffer_info->dma_ptr = dma_ptr;
2475         buffer_info->buffer_length = buffer_length;
2476         descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr));
2477         descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr));
2478         descriptor->data3 = 0;
2479         descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ |
2480                             (buffer_length & RX_DESC_DATA0_BUF_LENGTH_MASK_)));
2481         lan743x_rx_update_tail(rx, index);
2482
2483         return 0;
2484 }
2485
2486 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index)
2487 {
2488         struct lan743x_rx_buffer_info *buffer_info;
2489         struct lan743x_rx_descriptor *descriptor;
2490
2491         descriptor = &rx->ring_cpu_ptr[index];
2492         buffer_info = &rx->buffer_info[index];
2493
2494         descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr));
2495         descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr));
2496         descriptor->data3 = 0;
2497         descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ |
2498                             ((buffer_info->buffer_length) &
2499                             RX_DESC_DATA0_BUF_LENGTH_MASK_)));
2500         lan743x_rx_update_tail(rx, index);
2501 }
2502
2503 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index)
2504 {
2505         struct lan743x_rx_buffer_info *buffer_info;
2506         struct lan743x_rx_descriptor *descriptor;
2507
2508         descriptor = &rx->ring_cpu_ptr[index];
2509         buffer_info = &rx->buffer_info[index];
2510
2511         memset(descriptor, 0, sizeof(*descriptor));
2512
2513         if (buffer_info->dma_ptr) {
2514                 dma_unmap_single(&rx->adapter->pdev->dev,
2515                                  buffer_info->dma_ptr,
2516                                  buffer_info->buffer_length,
2517                                  DMA_FROM_DEVICE);
2518                 buffer_info->dma_ptr = 0;
2519         }
2520
2521         if (buffer_info->skb) {
2522                 dev_kfree_skb(buffer_info->skb);
2523                 buffer_info->skb = NULL;
2524         }
2525
2526         memset(buffer_info, 0, sizeof(*buffer_info));
2527 }
2528
2529 static struct sk_buff *
2530 lan743x_rx_trim_skb(struct sk_buff *skb, int frame_length)
2531 {
2532         if (skb_linearize(skb)) {
2533                 dev_kfree_skb_irq(skb);
2534                 return NULL;
2535         }
2536         frame_length = max_t(int, 0, frame_length - ETH_FCS_LEN);
2537         if (skb->len > frame_length) {
2538                 skb->tail -= skb->len - frame_length;
2539                 skb->len = frame_length;
2540         }
2541         return skb;
2542 }
2543
2544 static int lan743x_rx_process_buffer(struct lan743x_rx *rx)
2545 {
2546         int current_head_index = le32_to_cpu(*rx->head_cpu_ptr);
2547         struct lan743x_rx_descriptor *descriptor, *desc_ext;
2548         struct net_device *netdev = rx->adapter->netdev;
2549         int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
2550         struct lan743x_rx_buffer_info *buffer_info;
2551         int frame_length, buffer_length;
2552         int extension_index = -1;
2553         bool is_last, is_first;
2554         struct sk_buff *skb;
2555
2556         if (current_head_index < 0 || current_head_index >= rx->ring_size)
2557                 goto done;
2558
2559         if (rx->last_head < 0 || rx->last_head >= rx->ring_size)
2560                 goto done;
2561
2562         if (rx->last_head == current_head_index)
2563                 goto done;
2564
2565         descriptor = &rx->ring_cpu_ptr[rx->last_head];
2566         if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_OWN_)
2567                 goto done;
2568         buffer_info = &rx->buffer_info[rx->last_head];
2569
2570         is_last = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_;
2571         is_first = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_FS_;
2572
2573         if (is_last && le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_EXT_) {
2574                 /* extension is expected to follow */
2575                 int index = lan743x_rx_next_index(rx, rx->last_head);
2576
2577                 if (index == current_head_index)
2578                         /* extension not yet available */
2579                         goto done;
2580                 desc_ext = &rx->ring_cpu_ptr[index];
2581                 if (le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_OWN_)
2582                         /* extension not yet available */
2583                         goto done;
2584                 if (!(le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_EXT_))
2585                         goto move_forward;
2586                 extension_index = index;
2587         }
2588
2589         /* Only the last buffer in a multi-buffer frame contains the total frame
2590          * length. The chip occasionally sends more buffers than strictly
2591          * required to reach the total frame length.
2592          * Handle this by adding all buffers to the skb in their entirety.
2593          * Once the real frame length is known, trim the skb.
2594          */
2595         frame_length =
2596                 RX_DESC_DATA0_FRAME_LENGTH_GET_(le32_to_cpu(descriptor->data0));
2597         buffer_length = buffer_info->buffer_length;
2598
2599         netdev_dbg(netdev, "%s%schunk: %d/%d",
2600                    is_first ? "first " : "      ",
2601                    is_last  ? "last  " : "      ",
2602                    frame_length, buffer_length);
2603
2604         /* save existing skb, allocate new skb and map to dma */
2605         skb = buffer_info->skb;
2606         if (lan743x_rx_init_ring_element(rx, rx->last_head,
2607                                          GFP_ATOMIC | GFP_DMA)) {
2608                 /* failed to allocate next skb.
2609                  * Memory is very low.
2610                  * Drop this packet and reuse buffer.
2611                  */
2612                 lan743x_rx_reuse_ring_element(rx, rx->last_head);
2613                 /* drop packet that was being assembled */
2614                 dev_kfree_skb_irq(rx->skb_head);
2615                 rx->skb_head = NULL;
2616                 goto process_extension;
2617         }
2618
2619         /* add buffers to skb via skb->frag_list */
2620         if (is_first) {
2621                 skb_reserve(skb, RX_HEAD_PADDING);
2622                 skb_put(skb, buffer_length - RX_HEAD_PADDING);
2623                 if (rx->skb_head)
2624                         dev_kfree_skb_irq(rx->skb_head);
2625                 rx->skb_head = skb;
2626         } else if (rx->skb_head) {
2627                 skb_put(skb, buffer_length);
2628                 if (skb_shinfo(rx->skb_head)->frag_list)
2629                         rx->skb_tail->next = skb;
2630                 else
2631                         skb_shinfo(rx->skb_head)->frag_list = skb;
2632                 rx->skb_tail = skb;
2633                 rx->skb_head->len += skb->len;
2634                 rx->skb_head->data_len += skb->len;
2635                 rx->skb_head->truesize += skb->truesize;
2636         } else {
2637                 /* packet to assemble has already been dropped because one or
2638                  * more of its buffers could not be allocated
2639                  */
2640                 netdev_dbg(netdev, "drop buffer intended for dropped packet");
2641                 dev_kfree_skb_irq(skb);
2642         }
2643
2644 process_extension:
2645         if (extension_index >= 0) {
2646                 u32 ts_sec;
2647                 u32 ts_nsec;
2648
2649                 ts_sec = le32_to_cpu(desc_ext->data1);
2650                 ts_nsec = (le32_to_cpu(desc_ext->data2) &
2651                           RX_DESC_DATA2_TS_NS_MASK_);
2652                 if (rx->skb_head)
2653                         skb_hwtstamps(rx->skb_head)->hwtstamp =
2654                                 ktime_set(ts_sec, ts_nsec);
2655                 lan743x_rx_reuse_ring_element(rx, extension_index);
2656                 rx->last_head = extension_index;
2657                 netdev_dbg(netdev, "process extension");
2658         }
2659
2660         if (is_last && rx->skb_head)
2661                 rx->skb_head = lan743x_rx_trim_skb(rx->skb_head, frame_length);
2662
2663         if (is_last && rx->skb_head) {
2664                 rx->skb_head->protocol = eth_type_trans(rx->skb_head,
2665                                                         rx->adapter->netdev);
2666                 netdev_dbg(netdev, "sending %d byte frame to OS",
2667                            rx->skb_head->len);
2668                 napi_gro_receive(&rx->napi, rx->skb_head);
2669                 rx->skb_head = NULL;
2670         }
2671
2672 move_forward:
2673         /* push tail and head forward */
2674         rx->last_tail = rx->last_head;
2675         rx->last_head = lan743x_rx_next_index(rx, rx->last_head);
2676         result = RX_PROCESS_RESULT_BUFFER_RECEIVED;
2677 done:
2678         return result;
2679 }
2680
2681 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight)
2682 {
2683         struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi);
2684         struct lan743x_adapter *adapter = rx->adapter;
2685         int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
2686         u32 rx_tail_flags = 0;
2687         int count;
2688
2689         if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) {
2690                 /* clear int status bit before reading packet */
2691                 lan743x_csr_write(adapter, DMAC_INT_STS,
2692                                   DMAC_INT_BIT_RXFRM_(rx->channel_number));
2693         }
2694         for (count = 0; count < weight; count++) {
2695                 result = lan743x_rx_process_buffer(rx);
2696                 if (result == RX_PROCESS_RESULT_NOTHING_TO_DO)
2697                         break;
2698         }
2699         rx->frame_count += count;
2700         if (count == weight || result == RX_PROCESS_RESULT_BUFFER_RECEIVED)
2701                 return weight;
2702
2703         if (!napi_complete_done(napi, count))
2704                 return count;
2705
2706         /* re-arm interrupts, must write to rx tail on some chip variants */
2707         if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
2708                 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_;
2709         if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) {
2710                 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_;
2711         } else {
2712                 lan743x_csr_write(adapter, INT_EN_SET,
2713                                   INT_BIT_DMA_RX_(rx->channel_number));
2714         }
2715
2716         if (rx_tail_flags)
2717                 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2718                                   rx_tail_flags | rx->last_tail);
2719
2720         return count;
2721 }
2722
2723 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx)
2724 {
2725         if (rx->buffer_info && rx->ring_cpu_ptr) {
2726                 int index;
2727
2728                 for (index = 0; index < rx->ring_size; index++)
2729                         lan743x_rx_release_ring_element(rx, index);
2730         }
2731
2732         if (rx->head_cpu_ptr) {
2733                 dma_free_coherent(&rx->adapter->pdev->dev,
2734                                   sizeof(*rx->head_cpu_ptr), rx->head_cpu_ptr,
2735                                   rx->head_dma_ptr);
2736                 rx->head_cpu_ptr = NULL;
2737                 rx->head_dma_ptr = 0;
2738         }
2739
2740         kfree(rx->buffer_info);
2741         rx->buffer_info = NULL;
2742
2743         if (rx->ring_cpu_ptr) {
2744                 dma_free_coherent(&rx->adapter->pdev->dev,
2745                                   rx->ring_allocation_size, rx->ring_cpu_ptr,
2746                                   rx->ring_dma_ptr);
2747                 rx->ring_allocation_size = 0;
2748                 rx->ring_cpu_ptr = NULL;
2749                 rx->ring_dma_ptr = 0;
2750         }
2751
2752         rx->ring_size = 0;
2753         rx->last_head = 0;
2754 }
2755
2756 static int lan743x_rx_ring_init(struct lan743x_rx *rx)
2757 {
2758         size_t ring_allocation_size = 0;
2759         dma_addr_t dma_ptr = 0;
2760         void *cpu_ptr = NULL;
2761         int ret = -ENOMEM;
2762         int index = 0;
2763
2764         rx->ring_size = LAN743X_RX_RING_SIZE;
2765         if (rx->ring_size <= 1) {
2766                 ret = -EINVAL;
2767                 goto cleanup;
2768         }
2769         if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) {
2770                 ret = -EINVAL;
2771                 goto cleanup;
2772         }
2773         if (dma_set_mask_and_coherent(&rx->adapter->pdev->dev,
2774                                       DMA_BIT_MASK(64))) {
2775                 dev_warn(&rx->adapter->pdev->dev,
2776                          "lan743x_: No suitable DMA available\n");
2777                 ret = -ENOMEM;
2778                 goto cleanup;
2779         }
2780         ring_allocation_size = ALIGN(rx->ring_size *
2781                                      sizeof(struct lan743x_rx_descriptor),
2782                                      PAGE_SIZE);
2783         dma_ptr = 0;
2784         cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev,
2785                                      ring_allocation_size, &dma_ptr, GFP_KERNEL);
2786         if (!cpu_ptr) {
2787                 ret = -ENOMEM;
2788                 goto cleanup;
2789         }
2790         rx->ring_allocation_size = ring_allocation_size;
2791         rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr;
2792         rx->ring_dma_ptr = dma_ptr;
2793
2794         cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info),
2795                           GFP_KERNEL);
2796         if (!cpu_ptr) {
2797                 ret = -ENOMEM;
2798                 goto cleanup;
2799         }
2800         rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr;
2801         dma_ptr = 0;
2802         cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev,
2803                                      sizeof(*rx->head_cpu_ptr), &dma_ptr,
2804                                      GFP_KERNEL);
2805         if (!cpu_ptr) {
2806                 ret = -ENOMEM;
2807                 goto cleanup;
2808         }
2809
2810         rx->head_cpu_ptr = cpu_ptr;
2811         rx->head_dma_ptr = dma_ptr;
2812         if (rx->head_dma_ptr & 0x3) {
2813                 ret = -ENOMEM;
2814                 goto cleanup;
2815         }
2816
2817         rx->last_head = 0;
2818         for (index = 0; index < rx->ring_size; index++) {
2819                 ret = lan743x_rx_init_ring_element(rx, index, GFP_KERNEL);
2820                 if (ret)
2821                         goto cleanup;
2822         }
2823         return 0;
2824
2825 cleanup:
2826         netif_warn(rx->adapter, ifup, rx->adapter->netdev,
2827                    "Error allocating memory for LAN743x\n");
2828
2829         lan743x_rx_ring_cleanup(rx);
2830         return ret;
2831 }
2832
2833 static void lan743x_rx_close(struct lan743x_rx *rx)
2834 {
2835         struct lan743x_adapter *adapter = rx->adapter;
2836
2837         lan743x_csr_write(adapter, FCT_RX_CTL,
2838                           FCT_RX_CTL_DIS_(rx->channel_number));
2839         lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2840                                  FCT_RX_CTL_EN_(rx->channel_number),
2841                                  0, 1000, 20000, 100);
2842
2843         lan743x_csr_write(adapter, DMAC_CMD,
2844                           DMAC_CMD_STOP_R_(rx->channel_number));
2845         lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number);
2846
2847         lan743x_csr_write(adapter, DMAC_INT_EN_CLR,
2848                           DMAC_INT_BIT_RXFRM_(rx->channel_number));
2849         lan743x_csr_write(adapter, INT_EN_CLR,
2850                           INT_BIT_DMA_RX_(rx->channel_number));
2851         napi_disable(&rx->napi);
2852
2853         netif_napi_del(&rx->napi);
2854
2855         lan743x_rx_ring_cleanup(rx);
2856 }
2857
2858 static int lan743x_rx_open(struct lan743x_rx *rx)
2859 {
2860         struct lan743x_adapter *adapter = rx->adapter;
2861         u32 data = 0;
2862         int ret;
2863
2864         rx->frame_count = 0;
2865         ret = lan743x_rx_ring_init(rx);
2866         if (ret)
2867                 goto return_error;
2868
2869         netif_napi_add(adapter->netdev,
2870                        &rx->napi, lan743x_rx_napi_poll,
2871                        NAPI_POLL_WEIGHT);
2872
2873         lan743x_csr_write(adapter, DMAC_CMD,
2874                           DMAC_CMD_RX_SWR_(rx->channel_number));
2875         lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
2876                                  DMAC_CMD_RX_SWR_(rx->channel_number),
2877                                  0, 1000, 20000, 100);
2878
2879         /* set ring base address */
2880         lan743x_csr_write(adapter,
2881                           RX_BASE_ADDRH(rx->channel_number),
2882                           DMA_ADDR_HIGH32(rx->ring_dma_ptr));
2883         lan743x_csr_write(adapter,
2884                           RX_BASE_ADDRL(rx->channel_number),
2885                           DMA_ADDR_LOW32(rx->ring_dma_ptr));
2886
2887         /* set rx write back address */
2888         lan743x_csr_write(adapter,
2889                           RX_HEAD_WRITEBACK_ADDRH(rx->channel_number),
2890                           DMA_ADDR_HIGH32(rx->head_dma_ptr));
2891         lan743x_csr_write(adapter,
2892                           RX_HEAD_WRITEBACK_ADDRL(rx->channel_number),
2893                           DMA_ADDR_LOW32(rx->head_dma_ptr));
2894         data = RX_CFG_A_RX_HP_WB_EN_;
2895         if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
2896                 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ |
2897                         RX_CFG_A_RX_WB_THRES_SET_(0x7) |
2898                         RX_CFG_A_RX_PF_THRES_SET_(16) |
2899                         RX_CFG_A_RX_PF_PRI_THRES_SET_(4));
2900         }
2901
2902         /* set RX_CFG_A */
2903         lan743x_csr_write(adapter,
2904                           RX_CFG_A(rx->channel_number), data);
2905
2906         /* set RX_CFG_B */
2907         data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number));
2908         data &= ~RX_CFG_B_RX_PAD_MASK_;
2909         if (!RX_HEAD_PADDING)
2910                 data |= RX_CFG_B_RX_PAD_0_;
2911         else
2912                 data |= RX_CFG_B_RX_PAD_2_;
2913         data &= ~RX_CFG_B_RX_RING_LEN_MASK_;
2914         data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_);
2915         data |= RX_CFG_B_TS_ALL_RX_;
2916         if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
2917                 data |= RX_CFG_B_RDMABL_512_;
2918
2919         lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data);
2920         rx->vector_flags = lan743x_intr_get_vector_flags(adapter,
2921                                                          INT_BIT_DMA_RX_
2922                                                          (rx->channel_number));
2923
2924         /* set RX_CFG_C */
2925         data = 0;
2926         if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
2927                 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_;
2928         if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
2929                 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_;
2930         if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
2931                 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_;
2932         if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
2933                 data |= RX_CFG_C_RX_INT_EN_R2C_;
2934         lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data);
2935
2936         rx->last_tail = ((u32)(rx->ring_size - 1));
2937         lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
2938                           rx->last_tail);
2939         rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number));
2940         if (rx->last_head) {
2941                 ret = -EIO;
2942                 goto napi_delete;
2943         }
2944
2945         napi_enable(&rx->napi);
2946
2947         lan743x_csr_write(adapter, INT_EN_SET,
2948                           INT_BIT_DMA_RX_(rx->channel_number));
2949         lan743x_csr_write(adapter, DMAC_INT_STS,
2950                           DMAC_INT_BIT_RXFRM_(rx->channel_number));
2951         lan743x_csr_write(adapter, DMAC_INT_EN_SET,
2952                           DMAC_INT_BIT_RXFRM_(rx->channel_number));
2953         lan743x_csr_write(adapter, DMAC_CMD,
2954                           DMAC_CMD_START_R_(rx->channel_number));
2955
2956         /* initialize fifo */
2957         lan743x_csr_write(adapter, FCT_RX_CTL,
2958                           FCT_RX_CTL_RESET_(rx->channel_number));
2959         lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
2960                                  FCT_RX_CTL_RESET_(rx->channel_number),
2961                                  0, 1000, 20000, 100);
2962         lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number),
2963                           FCT_FLOW_CTL_REQ_EN_ |
2964                           FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) |
2965                           FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA));
2966
2967         /* enable fifo */
2968         lan743x_csr_write(adapter, FCT_RX_CTL,
2969                           FCT_RX_CTL_EN_(rx->channel_number));
2970         return 0;
2971
2972 napi_delete:
2973         netif_napi_del(&rx->napi);
2974         lan743x_rx_ring_cleanup(rx);
2975
2976 return_error:
2977         return ret;
2978 }
2979
2980 static int lan743x_netdev_close(struct net_device *netdev)
2981 {
2982         struct lan743x_adapter *adapter = netdev_priv(netdev);
2983         int index;
2984
2985         for (index = 0; index < adapter->used_tx_channels; index++)
2986                 lan743x_tx_close(&adapter->tx[index]);
2987
2988         for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++)
2989                 lan743x_rx_close(&adapter->rx[index]);
2990
2991         lan743x_ptp_close(adapter);
2992
2993         lan743x_phy_close(adapter);
2994
2995         lan743x_mac_close(adapter);
2996
2997         lan743x_intr_close(adapter);
2998
2999         return 0;
3000 }
3001
3002 static int lan743x_netdev_open(struct net_device *netdev)
3003 {
3004         struct lan743x_adapter *adapter = netdev_priv(netdev);
3005         int index;
3006         int ret;
3007
3008         ret = lan743x_intr_open(adapter);
3009         if (ret)
3010                 goto return_error;
3011
3012         ret = lan743x_mac_open(adapter);
3013         if (ret)
3014                 goto close_intr;
3015
3016         ret = lan743x_phy_open(adapter);
3017         if (ret)
3018                 goto close_mac;
3019
3020         ret = lan743x_ptp_open(adapter);
3021         if (ret)
3022                 goto close_phy;
3023
3024         lan743x_rfe_open(adapter);
3025
3026         for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
3027                 ret = lan743x_rx_open(&adapter->rx[index]);
3028                 if (ret)
3029                         goto close_rx;
3030         }
3031
3032         for (index = 0; index < adapter->used_tx_channels; index++) {
3033                 ret = lan743x_tx_open(&adapter->tx[index]);
3034                 if (ret)
3035                         goto close_tx;
3036         }
3037         return 0;
3038
3039 close_tx:
3040         for (index = 0; index < adapter->used_tx_channels; index++) {
3041                 if (adapter->tx[index].ring_cpu_ptr)
3042                         lan743x_tx_close(&adapter->tx[index]);
3043         }
3044
3045 close_rx:
3046         for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
3047                 if (adapter->rx[index].ring_cpu_ptr)
3048                         lan743x_rx_close(&adapter->rx[index]);
3049         }
3050         lan743x_ptp_close(adapter);
3051
3052 close_phy:
3053         lan743x_phy_close(adapter);
3054
3055 close_mac:
3056         lan743x_mac_close(adapter);
3057
3058 close_intr:
3059         lan743x_intr_close(adapter);
3060
3061 return_error:
3062         netif_warn(adapter, ifup, adapter->netdev,
3063                    "Error opening LAN743x\n");
3064         return ret;
3065 }
3066
3067 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb,
3068                                              struct net_device *netdev)
3069 {
3070         struct lan743x_adapter *adapter = netdev_priv(netdev);
3071         u8 ch = 0;
3072
3073         if (adapter->is_pci11x1x)
3074                 ch = skb->queue_mapping % PCI11X1X_USED_TX_CHANNELS;
3075
3076         return lan743x_tx_xmit_frame(&adapter->tx[ch], skb);
3077 }
3078
3079 static int lan743x_netdev_ioctl(struct net_device *netdev,
3080                                 struct ifreq *ifr, int cmd)
3081 {
3082         if (!netif_running(netdev))
3083                 return -EINVAL;
3084         if (cmd == SIOCSHWTSTAMP)
3085                 return lan743x_ptp_ioctl(netdev, ifr, cmd);
3086         return phy_mii_ioctl(netdev->phydev, ifr, cmd);
3087 }
3088
3089 static void lan743x_netdev_set_multicast(struct net_device *netdev)
3090 {
3091         struct lan743x_adapter *adapter = netdev_priv(netdev);
3092
3093         lan743x_rfe_set_multicast(adapter);
3094 }
3095
3096 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu)
3097 {
3098         struct lan743x_adapter *adapter = netdev_priv(netdev);
3099         int ret = 0;
3100
3101         ret = lan743x_mac_set_mtu(adapter, new_mtu);
3102         if (!ret)
3103                 netdev->mtu = new_mtu;
3104         return ret;
3105 }
3106
3107 static void lan743x_netdev_get_stats64(struct net_device *netdev,
3108                                        struct rtnl_link_stats64 *stats)
3109 {
3110         struct lan743x_adapter *adapter = netdev_priv(netdev);
3111
3112         stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES);
3113         stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES);
3114         stats->rx_bytes = lan743x_csr_read(adapter,
3115                                            STAT_RX_UNICAST_BYTE_COUNT) +
3116                           lan743x_csr_read(adapter,
3117                                            STAT_RX_BROADCAST_BYTE_COUNT) +
3118                           lan743x_csr_read(adapter,
3119                                            STAT_RX_MULTICAST_BYTE_COUNT);
3120         stats->tx_bytes = lan743x_csr_read(adapter,
3121                                            STAT_TX_UNICAST_BYTE_COUNT) +
3122                           lan743x_csr_read(adapter,
3123                                            STAT_TX_BROADCAST_BYTE_COUNT) +
3124                           lan743x_csr_read(adapter,
3125                                            STAT_TX_MULTICAST_BYTE_COUNT);
3126         stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) +
3127                            lan743x_csr_read(adapter,
3128                                             STAT_RX_ALIGNMENT_ERRORS) +
3129                            lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) +
3130                            lan743x_csr_read(adapter,
3131                                             STAT_RX_UNDERSIZE_FRAME_ERRORS) +
3132                            lan743x_csr_read(adapter,
3133                                             STAT_RX_OVERSIZE_FRAME_ERRORS);
3134         stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) +
3135                            lan743x_csr_read(adapter,
3136                                             STAT_TX_EXCESS_DEFERRAL_ERRORS) +
3137                            lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS);
3138         stats->rx_dropped = lan743x_csr_read(adapter,
3139                                              STAT_RX_DROPPED_FRAMES);
3140         stats->tx_dropped = lan743x_csr_read(adapter,
3141                                              STAT_TX_EXCESSIVE_COLLISION);
3142         stats->multicast = lan743x_csr_read(adapter,
3143                                             STAT_RX_MULTICAST_FRAMES) +
3144                            lan743x_csr_read(adapter,
3145                                             STAT_TX_MULTICAST_FRAMES);
3146         stats->collisions = lan743x_csr_read(adapter,
3147                                              STAT_TX_SINGLE_COLLISIONS) +
3148                             lan743x_csr_read(adapter,
3149                                              STAT_TX_MULTIPLE_COLLISIONS) +
3150                             lan743x_csr_read(adapter,
3151                                              STAT_TX_LATE_COLLISIONS);
3152 }
3153
3154 static int lan743x_netdev_set_mac_address(struct net_device *netdev,
3155                                           void *addr)
3156 {
3157         struct lan743x_adapter *adapter = netdev_priv(netdev);
3158         struct sockaddr *sock_addr = addr;
3159         int ret;
3160
3161         ret = eth_prepare_mac_addr_change(netdev, sock_addr);
3162         if (ret)
3163                 return ret;
3164         eth_hw_addr_set(netdev, sock_addr->sa_data);
3165         lan743x_mac_set_address(adapter, sock_addr->sa_data);
3166         lan743x_rfe_update_mac_address(adapter);
3167         return 0;
3168 }
3169
3170 static const struct net_device_ops lan743x_netdev_ops = {
3171         .ndo_open               = lan743x_netdev_open,
3172         .ndo_stop               = lan743x_netdev_close,
3173         .ndo_start_xmit         = lan743x_netdev_xmit_frame,
3174         .ndo_eth_ioctl          = lan743x_netdev_ioctl,
3175         .ndo_set_rx_mode        = lan743x_netdev_set_multicast,
3176         .ndo_change_mtu         = lan743x_netdev_change_mtu,
3177         .ndo_get_stats64        = lan743x_netdev_get_stats64,
3178         .ndo_set_mac_address    = lan743x_netdev_set_mac_address,
3179 };
3180
3181 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter)
3182 {
3183         lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
3184 }
3185
3186 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter)
3187 {
3188         mdiobus_unregister(adapter->mdiobus);
3189 }
3190
3191 static void lan743x_full_cleanup(struct lan743x_adapter *adapter)
3192 {
3193         unregister_netdev(adapter->netdev);
3194
3195         lan743x_mdiobus_cleanup(adapter);
3196         lan743x_hardware_cleanup(adapter);
3197         lan743x_pci_cleanup(adapter);
3198 }
3199
3200 static int lan743x_hardware_init(struct lan743x_adapter *adapter,
3201                                  struct pci_dev *pdev)
3202 {
3203         struct lan743x_tx *tx;
3204         int index;
3205         int ret;
3206
3207         adapter->is_pci11x1x = is_pci11x1x_chip(adapter);
3208         if (adapter->is_pci11x1x) {
3209                 adapter->max_tx_channels = PCI11X1X_MAX_TX_CHANNELS;
3210                 adapter->used_tx_channels = PCI11X1X_USED_TX_CHANNELS;
3211                 adapter->max_vector_count = PCI11X1X_MAX_VECTOR_COUNT;
3212                 pci11x1x_strap_get_status(adapter);
3213                 spin_lock_init(&adapter->eth_syslock_spinlock);
3214                 mutex_init(&adapter->sgmii_rw_lock);
3215         } else {
3216                 adapter->max_tx_channels = LAN743X_MAX_TX_CHANNELS;
3217                 adapter->used_tx_channels = LAN743X_USED_TX_CHANNELS;
3218                 adapter->max_vector_count = LAN743X_MAX_VECTOR_COUNT;
3219         }
3220
3221         adapter->intr.irq = adapter->pdev->irq;
3222         lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
3223
3224         ret = lan743x_gpio_init(adapter);
3225         if (ret)
3226                 return ret;
3227
3228         ret = lan743x_mac_init(adapter);
3229         if (ret)
3230                 return ret;
3231
3232         ret = lan743x_phy_init(adapter);
3233         if (ret)
3234                 return ret;
3235
3236         ret = lan743x_ptp_init(adapter);
3237         if (ret)
3238                 return ret;
3239
3240         lan743x_rfe_update_mac_address(adapter);
3241
3242         ret = lan743x_dmac_init(adapter);
3243         if (ret)
3244                 return ret;
3245
3246         for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
3247                 adapter->rx[index].adapter = adapter;
3248                 adapter->rx[index].channel_number = index;
3249         }
3250
3251         for (index = 0; index < adapter->used_tx_channels; index++) {
3252                 tx = &adapter->tx[index];
3253                 tx->adapter = adapter;
3254                 tx->channel_number = index;
3255                 spin_lock_init(&tx->ring_lock);
3256         }
3257
3258         return 0;
3259 }
3260
3261 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
3262 {
3263         u32 sgmii_ctl;
3264         int ret;
3265
3266         adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev);
3267         if (!(adapter->mdiobus)) {
3268                 ret = -ENOMEM;
3269                 goto return_error;
3270         }
3271
3272         adapter->mdiobus->priv = (void *)adapter;
3273         if (adapter->is_pci11x1x) {
3274                 if (adapter->is_sgmii_en) {
3275                         sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL);
3276                         sgmii_ctl |= SGMII_CTL_SGMII_ENABLE_;
3277                         sgmii_ctl &= ~SGMII_CTL_SGMII_POWER_DN_;
3278                         lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl);
3279                         netif_dbg(adapter, drv, adapter->netdev,
3280                                   "SGMII operation\n");
3281                         adapter->mdiobus->probe_capabilities = MDIOBUS_C22_C45;
3282                         adapter->mdiobus->read = lan743x_mdiobus_c45_read;
3283                         adapter->mdiobus->write = lan743x_mdiobus_c45_write;
3284                         adapter->mdiobus->name = "lan743x-mdiobus-c45";
3285                         netif_dbg(adapter, drv, adapter->netdev,
3286                                   "lan743x-mdiobus-c45\n");
3287                 } else {
3288                         sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL);
3289                         sgmii_ctl &= ~SGMII_CTL_SGMII_ENABLE_;
3290                         sgmii_ctl |= SGMII_CTL_SGMII_POWER_DN_;
3291                         lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl);
3292                         netif_dbg(adapter, drv, adapter->netdev,
3293                                   "RGMII operation\n");
3294                         // Only C22 support when RGMII I/F
3295                         adapter->mdiobus->probe_capabilities = MDIOBUS_C22;
3296                         adapter->mdiobus->read = lan743x_mdiobus_read;
3297                         adapter->mdiobus->write = lan743x_mdiobus_write;
3298                         adapter->mdiobus->name = "lan743x-mdiobus";
3299                         netif_dbg(adapter, drv, adapter->netdev,
3300                                   "lan743x-mdiobus\n");
3301                 }
3302         } else {
3303                 adapter->mdiobus->read = lan743x_mdiobus_read;
3304                 adapter->mdiobus->write = lan743x_mdiobus_write;
3305                 adapter->mdiobus->name = "lan743x-mdiobus";
3306                 netif_dbg(adapter, drv, adapter->netdev, "lan743x-mdiobus\n");
3307         }
3308
3309         snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE,
3310                  "pci-%s", pci_name(adapter->pdev));
3311
3312         if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_)
3313                 /* LAN7430 uses internal phy at address 1 */
3314                 adapter->mdiobus->phy_mask = ~(u32)BIT(1);
3315
3316         /* register mdiobus */
3317         ret = mdiobus_register(adapter->mdiobus);
3318         if (ret < 0)
3319                 goto return_error;
3320         return 0;
3321
3322 return_error:
3323         return ret;
3324 }
3325
3326 /* lan743x_pcidev_probe - Device Initialization Routine
3327  * @pdev: PCI device information struct
3328  * @id: entry in lan743x_pci_tbl
3329  *
3330  * Returns 0 on success, negative on failure
3331  *
3332  * initializes an adapter identified by a pci_dev structure.
3333  * The OS initialization, configuring of the adapter private structure,
3334  * and a hardware reset occur.
3335  **/
3336 static int lan743x_pcidev_probe(struct pci_dev *pdev,
3337                                 const struct pci_device_id *id)
3338 {
3339         struct lan743x_adapter *adapter = NULL;
3340         struct net_device *netdev = NULL;
3341         int ret = -ENODEV;
3342
3343         if (id->device == PCI_DEVICE_ID_SMSC_A011 ||
3344             id->device == PCI_DEVICE_ID_SMSC_A041) {
3345                 netdev = devm_alloc_etherdev_mqs(&pdev->dev,
3346                                                  sizeof(struct lan743x_adapter),
3347                                                  PCI11X1X_USED_TX_CHANNELS,
3348                                                  LAN743X_USED_RX_CHANNELS);
3349         } else {
3350                 netdev = devm_alloc_etherdev(&pdev->dev,
3351                                              sizeof(struct lan743x_adapter));
3352         }
3353
3354         if (!netdev)
3355                 goto return_error;
3356
3357         SET_NETDEV_DEV(netdev, &pdev->dev);
3358         pci_set_drvdata(pdev, netdev);
3359         adapter = netdev_priv(netdev);
3360         adapter->netdev = netdev;
3361         adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE |
3362                               NETIF_MSG_LINK | NETIF_MSG_IFUP |
3363                               NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED;
3364         netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
3365
3366         of_get_mac_address(pdev->dev.of_node, adapter->mac_address);
3367
3368         ret = lan743x_pci_init(adapter, pdev);
3369         if (ret)
3370                 goto return_error;
3371
3372         ret = lan743x_csr_init(adapter);
3373         if (ret)
3374                 goto cleanup_pci;
3375
3376         ret = lan743x_hardware_init(adapter, pdev);
3377         if (ret)
3378                 goto cleanup_pci;
3379
3380         ret = lan743x_mdiobus_init(adapter);
3381         if (ret)
3382                 goto cleanup_hardware;
3383
3384         adapter->netdev->netdev_ops = &lan743x_netdev_ops;
3385         adapter->netdev->ethtool_ops = &lan743x_ethtool_ops;
3386         adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
3387         adapter->netdev->hw_features = adapter->netdev->features;
3388
3389         /* carrier off reporting is important to ethtool even BEFORE open */
3390         netif_carrier_off(netdev);
3391
3392         ret = register_netdev(adapter->netdev);
3393         if (ret < 0)
3394                 goto cleanup_mdiobus;
3395         return 0;
3396
3397 cleanup_mdiobus:
3398         lan743x_mdiobus_cleanup(adapter);
3399
3400 cleanup_hardware:
3401         lan743x_hardware_cleanup(adapter);
3402
3403 cleanup_pci:
3404         lan743x_pci_cleanup(adapter);
3405
3406 return_error:
3407         pr_warn("Initialization failed\n");
3408         return ret;
3409 }
3410
3411 /**
3412  * lan743x_pcidev_remove - Device Removal Routine
3413  * @pdev: PCI device information struct
3414  *
3415  * this is called by the PCI subsystem to alert the driver
3416  * that it should release a PCI device.  This could be caused by a
3417  * Hot-Plug event, or because the driver is going to be removed from
3418  * memory.
3419  **/
3420 static void lan743x_pcidev_remove(struct pci_dev *pdev)
3421 {
3422         struct net_device *netdev = pci_get_drvdata(pdev);
3423         struct lan743x_adapter *adapter = netdev_priv(netdev);
3424
3425         lan743x_full_cleanup(adapter);
3426 }
3427
3428 static void lan743x_pcidev_shutdown(struct pci_dev *pdev)
3429 {
3430         struct net_device *netdev = pci_get_drvdata(pdev);
3431         struct lan743x_adapter *adapter = netdev_priv(netdev);
3432
3433         rtnl_lock();
3434         netif_device_detach(netdev);
3435
3436         /* close netdev when netdev is at running state.
3437          * For instance, it is true when system goes to sleep by pm-suspend
3438          * However, it is false when system goes to sleep by suspend GUI menu
3439          */
3440         if (netif_running(netdev))
3441                 lan743x_netdev_close(netdev);
3442         rtnl_unlock();
3443
3444 #ifdef CONFIG_PM
3445         pci_save_state(pdev);
3446 #endif
3447
3448         /* clean up lan743x portion */
3449         lan743x_hardware_cleanup(adapter);
3450 }
3451
3452 #ifdef CONFIG_PM_SLEEP
3453 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len)
3454 {
3455         return bitrev16(crc16(0xFFFF, buf, len));
3456 }
3457
3458 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter)
3459 {
3460         const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
3461         const u8 ipv6_multicast[3] = { 0x33, 0x33 };
3462         const u8 arp_type[2] = { 0x08, 0x06 };
3463         int mask_index;
3464         u32 sopass;
3465         u32 pmtctl;
3466         u32 wucsr;
3467         u32 macrx;
3468         u16 crc;
3469
3470         for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++)
3471                 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0);
3472
3473         /* clear wake settings */
3474         pmtctl = lan743x_csr_read(adapter, PMT_CTL);
3475         pmtctl |= PMT_CTL_WUPS_MASK_;
3476         pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ |
3477                 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ |
3478                 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_);
3479
3480         macrx = lan743x_csr_read(adapter, MAC_RX);
3481
3482         wucsr = 0;
3483         mask_index = 0;
3484
3485         pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_;
3486
3487         if (adapter->wolopts & WAKE_PHY) {
3488                 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_;
3489                 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_;
3490         }
3491         if (adapter->wolopts & WAKE_MAGIC) {
3492                 wucsr |= MAC_WUCSR_MPEN_;
3493                 macrx |= MAC_RX_RXEN_;
3494                 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3495         }
3496         if (adapter->wolopts & WAKE_UCAST) {
3497                 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_;
3498                 macrx |= MAC_RX_RXEN_;
3499                 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3500                 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
3501         }
3502         if (adapter->wolopts & WAKE_BCAST) {
3503                 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_;
3504                 macrx |= MAC_RX_RXEN_;
3505                 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3506                 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
3507         }
3508         if (adapter->wolopts & WAKE_MCAST) {
3509                 /* IPv4 multicast */
3510                 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3);
3511                 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
3512                                   MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
3513                                   (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
3514                                   (crc & MAC_WUF_CFG_CRC16_MASK_));
3515                 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7);
3516                 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
3517                 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
3518                 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
3519                 mask_index++;
3520
3521                 /* IPv6 multicast */
3522                 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2);
3523                 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
3524                                   MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
3525                                   (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
3526                                   (crc & MAC_WUF_CFG_CRC16_MASK_));
3527                 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3);
3528                 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
3529                 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
3530                 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
3531                 mask_index++;
3532
3533                 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
3534                 macrx |= MAC_RX_RXEN_;
3535                 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3536                 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
3537         }
3538         if (adapter->wolopts & WAKE_ARP) {
3539                 /* set MAC_WUF_CFG & WUF_MASK
3540                  * for packettype (offset 12,13) = ARP (0x0806)
3541                  */
3542                 crc = lan743x_pm_wakeframe_crc16(arp_type, 2);
3543                 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
3544                                   MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ |
3545                                   (0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
3546                                   (crc & MAC_WUF_CFG_CRC16_MASK_));
3547                 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000);
3548                 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
3549                 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
3550                 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
3551                 mask_index++;
3552
3553                 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
3554                 macrx |= MAC_RX_RXEN_;
3555                 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
3556                 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
3557         }
3558
3559         if (adapter->wolopts & WAKE_MAGICSECURE) {
3560                 sopass = *(u32 *)adapter->sopass;
3561                 lan743x_csr_write(adapter, MAC_MP_SO_LO, sopass);
3562                 sopass = *(u16 *)&adapter->sopass[4];
3563                 lan743x_csr_write(adapter, MAC_MP_SO_HI, sopass);
3564                 wucsr |= MAC_MP_SO_EN_;
3565         }
3566
3567         lan743x_csr_write(adapter, MAC_WUCSR, wucsr);
3568         lan743x_csr_write(adapter, PMT_CTL, pmtctl);
3569         lan743x_csr_write(adapter, MAC_RX, macrx);
3570 }
3571
3572 static int lan743x_pm_suspend(struct device *dev)
3573 {
3574         struct pci_dev *pdev = to_pci_dev(dev);
3575         struct net_device *netdev = pci_get_drvdata(pdev);
3576         struct lan743x_adapter *adapter = netdev_priv(netdev);
3577         u32 data;
3578
3579         lan743x_pcidev_shutdown(pdev);
3580
3581         /* clear all wakes */
3582         lan743x_csr_write(adapter, MAC_WUCSR, 0);
3583         lan743x_csr_write(adapter, MAC_WUCSR2, 0);
3584         lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF);
3585
3586         if (adapter->wolopts)
3587                 lan743x_pm_set_wol(adapter);
3588
3589         if (adapter->is_pci11x1x) {
3590                 /* Save HW_CFG to config again in PM resume */
3591                 data = lan743x_csr_read(adapter, HW_CFG);
3592                 adapter->hw_cfg = data;
3593                 data |= (HW_CFG_RST_PROTECT_PCIE_ |
3594                          HW_CFG_D3_RESET_DIS_ |
3595                          HW_CFG_D3_VAUX_OVR_ |
3596                          HW_CFG_HOT_RESET_DIS_ |
3597                          HW_CFG_RST_PROTECT_);
3598                 lan743x_csr_write(adapter, HW_CFG, data);
3599         }
3600
3601         /* Host sets PME_En, put D3hot */
3602         return pci_prepare_to_sleep(pdev);
3603 }
3604
3605 static int lan743x_pm_resume(struct device *dev)
3606 {
3607         struct pci_dev *pdev = to_pci_dev(dev);
3608         struct net_device *netdev = pci_get_drvdata(pdev);
3609         struct lan743x_adapter *adapter = netdev_priv(netdev);
3610         int ret;
3611
3612         pci_set_power_state(pdev, PCI_D0);
3613         pci_restore_state(pdev);
3614         pci_save_state(pdev);
3615
3616         /* Restore HW_CFG that was saved during pm suspend */
3617         if (adapter->is_pci11x1x)
3618                 lan743x_csr_write(adapter, HW_CFG, adapter->hw_cfg);
3619
3620         ret = lan743x_hardware_init(adapter, pdev);
3621         if (ret) {
3622                 netif_err(adapter, probe, adapter->netdev,
3623                           "lan743x_hardware_init returned %d\n", ret);
3624                 lan743x_pci_cleanup(adapter);
3625                 return ret;
3626         }
3627
3628         /* open netdev when netdev is at running state while resume.
3629          * For instance, it is true when system wakesup after pm-suspend
3630          * However, it is false when system wakes up after suspend GUI menu
3631          */
3632         if (netif_running(netdev))
3633                 lan743x_netdev_open(netdev);
3634
3635         netif_device_attach(netdev);
3636         ret = lan743x_csr_read(adapter, MAC_WK_SRC);
3637         netif_info(adapter, drv, adapter->netdev,
3638                    "Wakeup source : 0x%08X\n", ret);
3639
3640         return 0;
3641 }
3642
3643 static const struct dev_pm_ops lan743x_pm_ops = {
3644         SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume)
3645 };
3646 #endif /* CONFIG_PM_SLEEP */
3647
3648 static const struct pci_device_id lan743x_pcidev_tbl[] = {
3649         { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) },
3650         { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) },
3651         { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_A011) },
3652         { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_A041) },
3653         { 0, }
3654 };
3655
3656 MODULE_DEVICE_TABLE(pci, lan743x_pcidev_tbl);
3657
3658 static struct pci_driver lan743x_pcidev_driver = {
3659         .name     = DRIVER_NAME,
3660         .id_table = lan743x_pcidev_tbl,
3661         .probe    = lan743x_pcidev_probe,
3662         .remove   = lan743x_pcidev_remove,
3663 #ifdef CONFIG_PM_SLEEP
3664         .driver.pm = &lan743x_pm_ops,
3665 #endif
3666         .shutdown = lan743x_pcidev_shutdown,
3667 };
3668
3669 module_pci_driver(lan743x_pcidev_driver);
3670
3671 MODULE_AUTHOR(DRIVER_AUTHOR);
3672 MODULE_DESCRIPTION(DRIVER_DESC);
3673 MODULE_LICENSE("GPL");