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 static void lan743x_pci_cleanup(struct lan743x_adapter *adapter) 22 { 23 pci_release_selected_regions(adapter->pdev, 24 pci_select_bars(adapter->pdev, 25 IORESOURCE_MEM)); 26 pci_disable_device(adapter->pdev); 27 } 28 29 static int lan743x_pci_init(struct lan743x_adapter *adapter, 30 struct pci_dev *pdev) 31 { 32 unsigned long bars = 0; 33 int ret; 34 35 adapter->pdev = pdev; 36 ret = pci_enable_device_mem(pdev); 37 if (ret) 38 goto return_error; 39 40 netif_info(adapter, probe, adapter->netdev, 41 "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n", 42 pdev->vendor, pdev->device); 43 bars = pci_select_bars(pdev, IORESOURCE_MEM); 44 if (!test_bit(0, &bars)) 45 goto disable_device; 46 47 ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME); 48 if (ret) 49 goto disable_device; 50 51 pci_set_master(pdev); 52 return 0; 53 54 disable_device: 55 pci_disable_device(adapter->pdev); 56 57 return_error: 58 return ret; 59 } 60 61 u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset) 62 { 63 return ioread32(&adapter->csr.csr_address[offset]); 64 } 65 66 void lan743x_csr_write(struct lan743x_adapter *adapter, int offset, 67 u32 data) 68 { 69 iowrite32(data, &adapter->csr.csr_address[offset]); 70 } 71 72 #define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset) 73 74 static int lan743x_csr_light_reset(struct lan743x_adapter *adapter) 75 { 76 u32 data; 77 78 data = lan743x_csr_read(adapter, HW_CFG); 79 data |= HW_CFG_LRST_; 80 lan743x_csr_write(adapter, HW_CFG, data); 81 82 return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data, 83 !(data & HW_CFG_LRST_), 100000, 10000000); 84 } 85 86 static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter, 87 int offset, u32 bit_mask, 88 int target_value, int usleep_min, 89 int usleep_max, int count) 90 { 91 u32 data; 92 93 return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data, 94 target_value == ((data & bit_mask) ? 1 : 0), 95 usleep_max, usleep_min * count); 96 } 97 98 static int lan743x_csr_init(struct lan743x_adapter *adapter) 99 { 100 struct lan743x_csr *csr = &adapter->csr; 101 resource_size_t bar_start, bar_length; 102 int result; 103 104 bar_start = pci_resource_start(adapter->pdev, 0); 105 bar_length = pci_resource_len(adapter->pdev, 0); 106 csr->csr_address = devm_ioremap(&adapter->pdev->dev, 107 bar_start, bar_length); 108 if (!csr->csr_address) { 109 result = -ENOMEM; 110 goto clean_up; 111 } 112 113 csr->id_rev = lan743x_csr_read(adapter, ID_REV); 114 csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV); 115 netif_info(adapter, probe, adapter->netdev, 116 "ID_REV = 0x%08X, FPGA_REV = %d.%d\n", 117 csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev), 118 FPGA_REV_GET_MINOR_(csr->fpga_rev)); 119 if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) { 120 result = -ENODEV; 121 goto clean_up; 122 } 123 124 csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR; 125 switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) { 126 case ID_REV_CHIP_REV_A0_: 127 csr->flags |= LAN743X_CSR_FLAG_IS_A0; 128 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR; 129 break; 130 case ID_REV_CHIP_REV_B0_: 131 csr->flags |= LAN743X_CSR_FLAG_IS_B0; 132 break; 133 } 134 135 result = lan743x_csr_light_reset(adapter); 136 if (result) 137 goto clean_up; 138 return 0; 139 clean_up: 140 return result; 141 } 142 143 static void lan743x_intr_software_isr(void *context) 144 { 145 struct lan743x_adapter *adapter = context; 146 struct lan743x_intr *intr = &adapter->intr; 147 u32 int_sts; 148 149 int_sts = lan743x_csr_read(adapter, INT_STS); 150 if (int_sts & INT_BIT_SW_GP_) { 151 lan743x_csr_write(adapter, INT_STS, INT_BIT_SW_GP_); 152 intr->software_isr_flag = 1; 153 } 154 } 155 156 static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags) 157 { 158 struct lan743x_tx *tx = context; 159 struct lan743x_adapter *adapter = tx->adapter; 160 bool enable_flag = true; 161 u32 int_en = 0; 162 163 int_en = lan743x_csr_read(adapter, INT_EN_SET); 164 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) { 165 lan743x_csr_write(adapter, INT_EN_CLR, 166 INT_BIT_DMA_TX_(tx->channel_number)); 167 } 168 169 if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) { 170 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 171 u32 dmac_int_sts; 172 u32 dmac_int_en; 173 174 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) 175 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 176 else 177 dmac_int_sts = ioc_bit; 178 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) 179 dmac_int_en = lan743x_csr_read(adapter, 180 DMAC_INT_EN_SET); 181 else 182 dmac_int_en = ioc_bit; 183 184 dmac_int_en &= ioc_bit; 185 dmac_int_sts &= dmac_int_en; 186 if (dmac_int_sts & ioc_bit) { 187 napi_schedule(&tx->napi); 188 enable_flag = false;/* poll func will enable later */ 189 } 190 } 191 192 if (enable_flag) 193 /* enable isr */ 194 lan743x_csr_write(adapter, INT_EN_SET, 195 INT_BIT_DMA_TX_(tx->channel_number)); 196 } 197 198 static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags) 199 { 200 struct lan743x_rx *rx = context; 201 struct lan743x_adapter *adapter = rx->adapter; 202 bool enable_flag = true; 203 204 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) { 205 lan743x_csr_write(adapter, INT_EN_CLR, 206 INT_BIT_DMA_RX_(rx->channel_number)); 207 } 208 209 if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) { 210 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number); 211 u32 dmac_int_sts; 212 u32 dmac_int_en; 213 214 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) 215 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 216 else 217 dmac_int_sts = rx_frame_bit; 218 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) 219 dmac_int_en = lan743x_csr_read(adapter, 220 DMAC_INT_EN_SET); 221 else 222 dmac_int_en = rx_frame_bit; 223 224 dmac_int_en &= rx_frame_bit; 225 dmac_int_sts &= dmac_int_en; 226 if (dmac_int_sts & rx_frame_bit) { 227 napi_schedule(&rx->napi); 228 enable_flag = false;/* poll funct will enable later */ 229 } 230 } 231 232 if (enable_flag) { 233 /* enable isr */ 234 lan743x_csr_write(adapter, INT_EN_SET, 235 INT_BIT_DMA_RX_(rx->channel_number)); 236 } 237 } 238 239 static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags) 240 { 241 struct lan743x_adapter *adapter = context; 242 unsigned int channel; 243 244 if (int_sts & INT_BIT_ALL_RX_) { 245 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS; 246 channel++) { 247 u32 int_bit = INT_BIT_DMA_RX_(channel); 248 249 if (int_sts & int_bit) { 250 lan743x_rx_isr(&adapter->rx[channel], 251 int_bit, flags); 252 int_sts &= ~int_bit; 253 } 254 } 255 } 256 if (int_sts & INT_BIT_ALL_TX_) { 257 for (channel = 0; channel < LAN743X_USED_TX_CHANNELS; 258 channel++) { 259 u32 int_bit = INT_BIT_DMA_TX_(channel); 260 261 if (int_sts & int_bit) { 262 lan743x_tx_isr(&adapter->tx[channel], 263 int_bit, flags); 264 int_sts &= ~int_bit; 265 } 266 } 267 } 268 if (int_sts & INT_BIT_ALL_OTHER_) { 269 if (int_sts & INT_BIT_SW_GP_) { 270 lan743x_intr_software_isr(adapter); 271 int_sts &= ~INT_BIT_SW_GP_; 272 } 273 if (int_sts & INT_BIT_1588_) { 274 lan743x_ptp_isr(adapter); 275 int_sts &= ~INT_BIT_1588_; 276 } 277 } 278 if (int_sts) 279 lan743x_csr_write(adapter, INT_EN_CLR, int_sts); 280 } 281 282 static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr) 283 { 284 struct lan743x_vector *vector = ptr; 285 struct lan743x_adapter *adapter = vector->adapter; 286 irqreturn_t result = IRQ_NONE; 287 u32 int_enables; 288 u32 int_sts; 289 290 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) { 291 int_sts = lan743x_csr_read(adapter, INT_STS); 292 } else if (vector->flags & 293 (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C | 294 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) { 295 int_sts = lan743x_csr_read(adapter, INT_STS_R2C); 296 } else { 297 /* use mask as implied status */ 298 int_sts = vector->int_mask | INT_BIT_MAS_; 299 } 300 301 if (!(int_sts & INT_BIT_MAS_)) 302 goto irq_done; 303 304 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR) 305 /* disable vector interrupt */ 306 lan743x_csr_write(adapter, 307 INT_VEC_EN_CLR, 308 INT_VEC_EN_(vector->vector_index)); 309 310 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR) 311 /* disable master interrupt */ 312 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_); 313 314 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) { 315 int_enables = lan743x_csr_read(adapter, INT_EN_SET); 316 } else { 317 /* use vector mask as implied enable mask */ 318 int_enables = vector->int_mask; 319 } 320 321 int_sts &= int_enables; 322 int_sts &= vector->int_mask; 323 if (int_sts) { 324 if (vector->handler) { 325 vector->handler(vector->context, 326 int_sts, vector->flags); 327 } else { 328 /* disable interrupts on this vector */ 329 lan743x_csr_write(adapter, INT_EN_CLR, 330 vector->int_mask); 331 } 332 result = IRQ_HANDLED; 333 } 334 335 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET) 336 /* enable master interrupt */ 337 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_); 338 339 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET) 340 /* enable vector interrupt */ 341 lan743x_csr_write(adapter, 342 INT_VEC_EN_SET, 343 INT_VEC_EN_(vector->vector_index)); 344 irq_done: 345 return result; 346 } 347 348 static int lan743x_intr_test_isr(struct lan743x_adapter *adapter) 349 { 350 struct lan743x_intr *intr = &adapter->intr; 351 int result = -ENODEV; 352 int timeout = 10; 353 354 intr->software_isr_flag = 0; 355 356 /* enable interrupt */ 357 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_); 358 359 /* activate interrupt here */ 360 lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_); 361 while ((timeout > 0) && (!(intr->software_isr_flag))) { 362 usleep_range(1000, 20000); 363 timeout--; 364 } 365 366 if (intr->software_isr_flag) 367 result = 0; 368 369 /* disable interrupts */ 370 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_); 371 return result; 372 } 373 374 static int lan743x_intr_register_isr(struct lan743x_adapter *adapter, 375 int vector_index, u32 flags, 376 u32 int_mask, 377 lan743x_vector_handler handler, 378 void *context) 379 { 380 struct lan743x_vector *vector = &adapter->intr.vector_list 381 [vector_index]; 382 int ret; 383 384 vector->adapter = adapter; 385 vector->flags = flags; 386 vector->vector_index = vector_index; 387 vector->int_mask = int_mask; 388 vector->handler = handler; 389 vector->context = context; 390 391 ret = request_irq(vector->irq, 392 lan743x_intr_entry_isr, 393 (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ? 394 IRQF_SHARED : 0, DRIVER_NAME, vector); 395 if (ret) { 396 vector->handler = NULL; 397 vector->context = NULL; 398 vector->int_mask = 0; 399 vector->flags = 0; 400 } 401 return ret; 402 } 403 404 static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter, 405 int vector_index) 406 { 407 struct lan743x_vector *vector = &adapter->intr.vector_list 408 [vector_index]; 409 410 free_irq(vector->irq, vector); 411 vector->handler = NULL; 412 vector->context = NULL; 413 vector->int_mask = 0; 414 vector->flags = 0; 415 } 416 417 static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter, 418 u32 int_mask) 419 { 420 int index; 421 422 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) { 423 if (adapter->intr.vector_list[index].int_mask & int_mask) 424 return adapter->intr.vector_list[index].flags; 425 } 426 return 0; 427 } 428 429 static void lan743x_intr_close(struct lan743x_adapter *adapter) 430 { 431 struct lan743x_intr *intr = &adapter->intr; 432 int index = 0; 433 434 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_); 435 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF); 436 437 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) { 438 if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) { 439 lan743x_intr_unregister_isr(adapter, index); 440 intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index); 441 } 442 } 443 444 if (intr->flags & INTR_FLAG_MSI_ENABLED) { 445 pci_disable_msi(adapter->pdev); 446 intr->flags &= ~INTR_FLAG_MSI_ENABLED; 447 } 448 449 if (intr->flags & INTR_FLAG_MSIX_ENABLED) { 450 pci_disable_msix(adapter->pdev); 451 intr->flags &= ~INTR_FLAG_MSIX_ENABLED; 452 } 453 } 454 455 static int lan743x_intr_open(struct lan743x_adapter *adapter) 456 { 457 struct msix_entry msix_entries[LAN743X_MAX_VECTOR_COUNT]; 458 struct lan743x_intr *intr = &adapter->intr; 459 u32 int_vec_en_auto_clr = 0; 460 u32 int_vec_map0 = 0; 461 u32 int_vec_map1 = 0; 462 int ret = -ENODEV; 463 int index = 0; 464 u32 flags = 0; 465 466 intr->number_of_vectors = 0; 467 468 /* Try to set up MSIX interrupts */ 469 memset(&msix_entries[0], 0, 470 sizeof(struct msix_entry) * LAN743X_MAX_VECTOR_COUNT); 471 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) 472 msix_entries[index].entry = index; 473 ret = pci_enable_msix_range(adapter->pdev, 474 msix_entries, 1, 475 1 + LAN743X_USED_TX_CHANNELS + 476 LAN743X_USED_RX_CHANNELS); 477 478 if (ret > 0) { 479 intr->flags |= INTR_FLAG_MSIX_ENABLED; 480 intr->number_of_vectors = ret; 481 intr->using_vectors = true; 482 for (index = 0; index < intr->number_of_vectors; index++) 483 intr->vector_list[index].irq = msix_entries 484 [index].vector; 485 netif_info(adapter, ifup, adapter->netdev, 486 "using MSIX interrupts, number of vectors = %d\n", 487 intr->number_of_vectors); 488 } 489 490 /* If MSIX failed try to setup using MSI interrupts */ 491 if (!intr->number_of_vectors) { 492 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 493 if (!pci_enable_msi(adapter->pdev)) { 494 intr->flags |= INTR_FLAG_MSI_ENABLED; 495 intr->number_of_vectors = 1; 496 intr->using_vectors = true; 497 intr->vector_list[0].irq = 498 adapter->pdev->irq; 499 netif_info(adapter, ifup, adapter->netdev, 500 "using MSI interrupts, number of vectors = %d\n", 501 intr->number_of_vectors); 502 } 503 } 504 } 505 506 /* If MSIX, and MSI failed, setup using legacy interrupt */ 507 if (!intr->number_of_vectors) { 508 intr->number_of_vectors = 1; 509 intr->using_vectors = false; 510 intr->vector_list[0].irq = intr->irq; 511 netif_info(adapter, ifup, adapter->netdev, 512 "using legacy interrupts\n"); 513 } 514 515 /* At this point we must have at least one irq */ 516 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF); 517 518 /* map all interrupts to vector 0 */ 519 lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000); 520 lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000); 521 lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000); 522 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 523 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 524 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 525 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR; 526 527 if (intr->using_vectors) { 528 flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 529 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 530 } else { 531 flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR | 532 LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET | 533 LAN743X_VECTOR_FLAG_IRQ_SHARED; 534 } 535 536 if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 537 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ; 538 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C; 539 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR; 540 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK; 541 flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C; 542 flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C; 543 } 544 545 ret = lan743x_intr_register_isr(adapter, 0, flags, 546 INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ | 547 INT_BIT_ALL_OTHER_, 548 lan743x_intr_shared_isr, adapter); 549 if (ret) 550 goto clean_up; 551 intr->flags |= INTR_FLAG_IRQ_REQUESTED(0); 552 553 if (intr->using_vectors) 554 lan743x_csr_write(adapter, INT_VEC_EN_SET, 555 INT_VEC_EN_(0)); 556 557 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 558 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD); 559 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD); 560 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD); 561 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD); 562 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD); 563 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD); 564 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD); 565 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD); 566 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432); 567 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001); 568 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF); 569 } 570 571 /* enable interrupts */ 572 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_); 573 ret = lan743x_intr_test_isr(adapter); 574 if (ret) 575 goto clean_up; 576 577 if (intr->number_of_vectors > 1) { 578 int number_of_tx_vectors = intr->number_of_vectors - 1; 579 580 if (number_of_tx_vectors > LAN743X_USED_TX_CHANNELS) 581 number_of_tx_vectors = LAN743X_USED_TX_CHANNELS; 582 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 583 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 584 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 585 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR | 586 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 587 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 588 589 if (adapter->csr.flags & 590 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 591 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 592 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 593 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 594 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 595 } 596 597 for (index = 0; index < number_of_tx_vectors; index++) { 598 u32 int_bit = INT_BIT_DMA_TX_(index); 599 int vector = index + 1; 600 601 /* map TX interrupt to vector */ 602 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector); 603 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1); 604 605 /* Remove TX interrupt from shared mask */ 606 intr->vector_list[0].int_mask &= ~int_bit; 607 ret = lan743x_intr_register_isr(adapter, vector, flags, 608 int_bit, lan743x_tx_isr, 609 &adapter->tx[index]); 610 if (ret) 611 goto clean_up; 612 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 613 if (!(flags & 614 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)) 615 lan743x_csr_write(adapter, INT_VEC_EN_SET, 616 INT_VEC_EN_(vector)); 617 } 618 } 619 if ((intr->number_of_vectors - LAN743X_USED_TX_CHANNELS) > 1) { 620 int number_of_rx_vectors = intr->number_of_vectors - 621 LAN743X_USED_TX_CHANNELS - 1; 622 623 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS) 624 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS; 625 626 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 627 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 628 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 629 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR | 630 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 631 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 632 633 if (adapter->csr.flags & 634 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 635 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR | 636 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 637 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 638 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 639 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 640 } 641 for (index = 0; index < number_of_rx_vectors; index++) { 642 int vector = index + 1 + LAN743X_USED_TX_CHANNELS; 643 u32 int_bit = INT_BIT_DMA_RX_(index); 644 645 /* map RX interrupt to vector */ 646 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector); 647 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0); 648 if (flags & 649 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) { 650 int_vec_en_auto_clr |= INT_VEC_EN_(vector); 651 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR, 652 int_vec_en_auto_clr); 653 } 654 655 /* Remove RX interrupt from shared mask */ 656 intr->vector_list[0].int_mask &= ~int_bit; 657 ret = lan743x_intr_register_isr(adapter, vector, flags, 658 int_bit, lan743x_rx_isr, 659 &adapter->rx[index]); 660 if (ret) 661 goto clean_up; 662 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 663 664 lan743x_csr_write(adapter, INT_VEC_EN_SET, 665 INT_VEC_EN_(vector)); 666 } 667 } 668 return 0; 669 670 clean_up: 671 lan743x_intr_close(adapter); 672 return ret; 673 } 674 675 static int lan743x_dp_write(struct lan743x_adapter *adapter, 676 u32 select, u32 addr, u32 length, u32 *buf) 677 { 678 int ret = -EIO; 679 u32 dp_sel; 680 int i; 681 682 mutex_lock(&adapter->dp_lock); 683 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_, 684 1, 40, 100, 100)) 685 goto unlock; 686 dp_sel = lan743x_csr_read(adapter, DP_SEL); 687 dp_sel &= ~DP_SEL_MASK_; 688 dp_sel |= select; 689 lan743x_csr_write(adapter, DP_SEL, dp_sel); 690 691 for (i = 0; i < length; i++) { 692 lan743x_csr_write(adapter, DP_ADDR, addr + i); 693 lan743x_csr_write(adapter, DP_DATA_0, buf[i]); 694 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_); 695 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_, 696 1, 40, 100, 100)) 697 goto unlock; 698 } 699 ret = 0; 700 701 unlock: 702 mutex_unlock(&adapter->dp_lock); 703 return ret; 704 } 705 706 static u32 lan743x_mac_mii_access(u16 id, u16 index, int read) 707 { 708 u32 ret; 709 710 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) & 711 MAC_MII_ACC_PHY_ADDR_MASK_; 712 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) & 713 MAC_MII_ACC_MIIRINDA_MASK_; 714 715 if (read) 716 ret |= MAC_MII_ACC_MII_READ_; 717 else 718 ret |= MAC_MII_ACC_MII_WRITE_; 719 ret |= MAC_MII_ACC_MII_BUSY_; 720 721 return ret; 722 } 723 724 static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter) 725 { 726 u32 data; 727 728 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data, 729 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000); 730 } 731 732 static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index) 733 { 734 struct lan743x_adapter *adapter = bus->priv; 735 u32 val, mii_access; 736 int ret; 737 738 /* comfirm MII not busy */ 739 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 740 if (ret < 0) 741 return ret; 742 743 /* set the address, index & direction (read from PHY) */ 744 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ); 745 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 746 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 747 if (ret < 0) 748 return ret; 749 750 val = lan743x_csr_read(adapter, MAC_MII_DATA); 751 return (int)(val & 0xFFFF); 752 } 753 754 static int lan743x_mdiobus_write(struct mii_bus *bus, 755 int phy_id, int index, u16 regval) 756 { 757 struct lan743x_adapter *adapter = bus->priv; 758 u32 val, mii_access; 759 int ret; 760 761 /* confirm MII not busy */ 762 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 763 if (ret < 0) 764 return ret; 765 val = (u32)regval; 766 lan743x_csr_write(adapter, MAC_MII_DATA, val); 767 768 /* set the address, index & direction (write to PHY) */ 769 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE); 770 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 771 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 772 return ret; 773 } 774 775 static void lan743x_mac_set_address(struct lan743x_adapter *adapter, 776 u8 *addr) 777 { 778 u32 addr_lo, addr_hi; 779 780 addr_lo = addr[0] | 781 addr[1] << 8 | 782 addr[2] << 16 | 783 addr[3] << 24; 784 addr_hi = addr[4] | 785 addr[5] << 8; 786 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo); 787 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi); 788 789 ether_addr_copy(adapter->mac_address, addr); 790 netif_info(adapter, drv, adapter->netdev, 791 "MAC address set to %pM\n", addr); 792 } 793 794 static int lan743x_mac_init(struct lan743x_adapter *adapter) 795 { 796 bool mac_address_valid = true; 797 struct net_device *netdev; 798 u32 mac_addr_hi = 0; 799 u32 mac_addr_lo = 0; 800 u32 data; 801 802 netdev = adapter->netdev; 803 804 /* disable auto duplex, and speed detection. Phylib does that */ 805 data = lan743x_csr_read(adapter, MAC_CR); 806 data &= ~(MAC_CR_ADD_ | MAC_CR_ASD_); 807 data |= MAC_CR_CNTR_RST_; 808 lan743x_csr_write(adapter, MAC_CR, data); 809 810 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH); 811 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL); 812 adapter->mac_address[0] = mac_addr_lo & 0xFF; 813 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF; 814 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF; 815 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF; 816 adapter->mac_address[4] = mac_addr_hi & 0xFF; 817 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF; 818 819 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) && 820 mac_addr_lo == 0xFFFFFFFF) { 821 mac_address_valid = false; 822 } else if (!is_valid_ether_addr(adapter->mac_address)) { 823 mac_address_valid = false; 824 } 825 826 if (!mac_address_valid) 827 eth_random_addr(adapter->mac_address); 828 lan743x_mac_set_address(adapter, adapter->mac_address); 829 ether_addr_copy(netdev->dev_addr, adapter->mac_address); 830 return 0; 831 } 832 833 static int lan743x_mac_open(struct lan743x_adapter *adapter) 834 { 835 int ret = 0; 836 u32 temp; 837 838 temp = lan743x_csr_read(adapter, MAC_RX); 839 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_); 840 temp = lan743x_csr_read(adapter, MAC_TX); 841 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_); 842 return ret; 843 } 844 845 static void lan743x_mac_close(struct lan743x_adapter *adapter) 846 { 847 u32 temp; 848 849 temp = lan743x_csr_read(adapter, MAC_TX); 850 temp &= ~MAC_TX_TXEN_; 851 lan743x_csr_write(adapter, MAC_TX, temp); 852 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_, 853 1, 1000, 20000, 100); 854 855 temp = lan743x_csr_read(adapter, MAC_RX); 856 temp &= ~MAC_RX_RXEN_; 857 lan743x_csr_write(adapter, MAC_RX, temp); 858 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 859 1, 1000, 20000, 100); 860 } 861 862 static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter, 863 bool tx_enable, bool rx_enable) 864 { 865 u32 flow_setting = 0; 866 867 /* set maximum pause time because when fifo space frees 868 * up a zero value pause frame will be sent to release the pause 869 */ 870 flow_setting = MAC_FLOW_CR_FCPT_MASK_; 871 if (tx_enable) 872 flow_setting |= MAC_FLOW_CR_TX_FCEN_; 873 if (rx_enable) 874 flow_setting |= MAC_FLOW_CR_RX_FCEN_; 875 lan743x_csr_write(adapter, MAC_FLOW, flow_setting); 876 } 877 878 static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu) 879 { 880 int enabled = 0; 881 u32 mac_rx = 0; 882 883 mac_rx = lan743x_csr_read(adapter, MAC_RX); 884 if (mac_rx & MAC_RX_RXEN_) { 885 enabled = 1; 886 if (mac_rx & MAC_RX_RXD_) { 887 lan743x_csr_write(adapter, MAC_RX, mac_rx); 888 mac_rx &= ~MAC_RX_RXD_; 889 } 890 mac_rx &= ~MAC_RX_RXEN_; 891 lan743x_csr_write(adapter, MAC_RX, mac_rx); 892 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 893 1, 1000, 20000, 100); 894 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_); 895 } 896 897 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_); 898 mac_rx |= (((new_mtu + ETH_HLEN + 4) << MAC_RX_MAX_SIZE_SHIFT_) & 899 MAC_RX_MAX_SIZE_MASK_); 900 lan743x_csr_write(adapter, MAC_RX, mac_rx); 901 902 if (enabled) { 903 mac_rx |= MAC_RX_RXEN_; 904 lan743x_csr_write(adapter, MAC_RX, mac_rx); 905 } 906 return 0; 907 } 908 909 /* PHY */ 910 static int lan743x_phy_reset(struct lan743x_adapter *adapter) 911 { 912 u32 data; 913 914 /* Only called with in probe, and before mdiobus_register */ 915 916 data = lan743x_csr_read(adapter, PMT_CTL); 917 data |= PMT_CTL_ETH_PHY_RST_; 918 lan743x_csr_write(adapter, PMT_CTL, data); 919 920 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data, 921 (!(data & PMT_CTL_ETH_PHY_RST_) && 922 (data & PMT_CTL_READY_)), 923 50000, 1000000); 924 } 925 926 static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter, 927 u8 duplex, u16 local_adv, 928 u16 remote_adv) 929 { 930 struct lan743x_phy *phy = &adapter->phy; 931 u8 cap; 932 933 if (phy->fc_autoneg) 934 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv); 935 else 936 cap = phy->fc_request_control; 937 938 lan743x_mac_flow_ctrl_set_enables(adapter, 939 cap & FLOW_CTRL_TX, 940 cap & FLOW_CTRL_RX); 941 } 942 943 static int lan743x_phy_init(struct lan743x_adapter *adapter) 944 { 945 return lan743x_phy_reset(adapter); 946 } 947 948 static void lan743x_phy_link_status_change(struct net_device *netdev) 949 { 950 struct lan743x_adapter *adapter = netdev_priv(netdev); 951 struct phy_device *phydev = netdev->phydev; 952 u32 data; 953 954 phy_print_status(phydev); 955 if (phydev->state == PHY_RUNNING) { 956 struct ethtool_link_ksettings ksettings; 957 int remote_advertisement = 0; 958 int local_advertisement = 0; 959 960 data = lan743x_csr_read(adapter, MAC_CR); 961 962 /* set interface mode */ 963 if (phy_interface_mode_is_rgmii(adapter->phy_mode)) 964 /* RGMII */ 965 data &= ~MAC_CR_MII_EN_; 966 else 967 /* GMII */ 968 data |= MAC_CR_MII_EN_; 969 970 /* set duplex mode */ 971 if (phydev->duplex) 972 data |= MAC_CR_DPX_; 973 else 974 data &= ~MAC_CR_DPX_; 975 976 /* set bus speed */ 977 switch (phydev->speed) { 978 case SPEED_10: 979 data &= ~MAC_CR_CFG_H_; 980 data &= ~MAC_CR_CFG_L_; 981 break; 982 case SPEED_100: 983 data &= ~MAC_CR_CFG_H_; 984 data |= MAC_CR_CFG_L_; 985 break; 986 case SPEED_1000: 987 data |= MAC_CR_CFG_H_; 988 data &= ~MAC_CR_CFG_L_; 989 break; 990 } 991 lan743x_csr_write(adapter, MAC_CR, data); 992 993 memset(&ksettings, 0, sizeof(ksettings)); 994 phy_ethtool_get_link_ksettings(netdev, &ksettings); 995 local_advertisement = 996 linkmode_adv_to_mii_adv_t(phydev->advertising); 997 remote_advertisement = 998 linkmode_adv_to_mii_adv_t(phydev->lp_advertising); 999 1000 lan743x_phy_update_flowcontrol(adapter, 1001 ksettings.base.duplex, 1002 local_advertisement, 1003 remote_advertisement); 1004 lan743x_ptp_update_latency(adapter, ksettings.base.speed); 1005 } 1006 } 1007 1008 static void lan743x_phy_close(struct lan743x_adapter *adapter) 1009 { 1010 struct net_device *netdev = adapter->netdev; 1011 1012 phy_stop(netdev->phydev); 1013 phy_disconnect(netdev->phydev); 1014 netdev->phydev = NULL; 1015 } 1016 1017 static int lan743x_phy_open(struct lan743x_adapter *adapter) 1018 { 1019 struct lan743x_phy *phy = &adapter->phy; 1020 struct device_node *phynode; 1021 struct phy_device *phydev; 1022 struct net_device *netdev; 1023 int ret = -EIO; 1024 1025 netdev = adapter->netdev; 1026 phynode = of_node_get(adapter->pdev->dev.of_node); 1027 adapter->phy_mode = PHY_INTERFACE_MODE_GMII; 1028 1029 if (phynode) { 1030 of_get_phy_mode(phynode, &adapter->phy_mode); 1031 1032 if (of_phy_is_fixed_link(phynode)) { 1033 ret = of_phy_register_fixed_link(phynode); 1034 if (ret) { 1035 netdev_err(netdev, 1036 "cannot register fixed PHY\n"); 1037 of_node_put(phynode); 1038 goto return_error; 1039 } 1040 } 1041 phydev = of_phy_connect(netdev, phynode, 1042 lan743x_phy_link_status_change, 0, 1043 adapter->phy_mode); 1044 of_node_put(phynode); 1045 if (!phydev) 1046 goto return_error; 1047 } else { 1048 phydev = phy_find_first(adapter->mdiobus); 1049 if (!phydev) 1050 goto return_error; 1051 1052 ret = phy_connect_direct(netdev, phydev, 1053 lan743x_phy_link_status_change, 1054 adapter->phy_mode); 1055 if (ret) 1056 goto return_error; 1057 } 1058 1059 /* MAC doesn't support 1000T Half */ 1060 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); 1061 1062 /* support both flow controls */ 1063 phy_support_asym_pause(phydev); 1064 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); 1065 phy->fc_autoneg = phydev->autoneg; 1066 1067 phy_start(phydev); 1068 phy_start_aneg(phydev); 1069 return 0; 1070 1071 return_error: 1072 return ret; 1073 } 1074 1075 static void lan743x_rfe_open(struct lan743x_adapter *adapter) 1076 { 1077 lan743x_csr_write(adapter, RFE_RSS_CFG, 1078 RFE_RSS_CFG_UDP_IPV6_EX_ | 1079 RFE_RSS_CFG_TCP_IPV6_EX_ | 1080 RFE_RSS_CFG_IPV6_EX_ | 1081 RFE_RSS_CFG_UDP_IPV6_ | 1082 RFE_RSS_CFG_TCP_IPV6_ | 1083 RFE_RSS_CFG_IPV6_ | 1084 RFE_RSS_CFG_UDP_IPV4_ | 1085 RFE_RSS_CFG_TCP_IPV4_ | 1086 RFE_RSS_CFG_IPV4_ | 1087 RFE_RSS_CFG_VALID_HASH_BITS_ | 1088 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ | 1089 RFE_RSS_CFG_RSS_HASH_STORE_ | 1090 RFE_RSS_CFG_RSS_ENABLE_); 1091 } 1092 1093 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter) 1094 { 1095 u8 *mac_addr; 1096 u32 mac_addr_hi = 0; 1097 u32 mac_addr_lo = 0; 1098 1099 /* Add mac address to perfect Filter */ 1100 mac_addr = adapter->mac_address; 1101 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) | 1102 (((u32)(mac_addr[1])) << 8) | 1103 (((u32)(mac_addr[2])) << 16) | 1104 (((u32)(mac_addr[3])) << 24)); 1105 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) | 1106 (((u32)(mac_addr[5])) << 8)); 1107 1108 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo); 1109 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0), 1110 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_); 1111 } 1112 1113 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter) 1114 { 1115 struct net_device *netdev = adapter->netdev; 1116 u32 hash_table[DP_SEL_VHF_HASH_LEN]; 1117 u32 rfctl; 1118 u32 data; 1119 1120 rfctl = lan743x_csr_read(adapter, RFE_CTL); 1121 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ | 1122 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); 1123 rfctl |= RFE_CTL_AB_; 1124 if (netdev->flags & IFF_PROMISC) { 1125 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_; 1126 } else { 1127 if (netdev->flags & IFF_ALLMULTI) 1128 rfctl |= RFE_CTL_AM_; 1129 } 1130 1131 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32)); 1132 if (netdev_mc_count(netdev)) { 1133 struct netdev_hw_addr *ha; 1134 int i; 1135 1136 rfctl |= RFE_CTL_DA_PERFECT_; 1137 i = 1; 1138 netdev_for_each_mc_addr(ha, netdev) { 1139 /* set first 32 into Perfect Filter */ 1140 if (i < 33) { 1141 lan743x_csr_write(adapter, 1142 RFE_ADDR_FILT_HI(i), 0); 1143 data = ha->addr[3]; 1144 data = ha->addr[2] | (data << 8); 1145 data = ha->addr[1] | (data << 8); 1146 data = ha->addr[0] | (data << 8); 1147 lan743x_csr_write(adapter, 1148 RFE_ADDR_FILT_LO(i), data); 1149 data = ha->addr[5]; 1150 data = ha->addr[4] | (data << 8); 1151 data |= RFE_ADDR_FILT_HI_VALID_; 1152 lan743x_csr_write(adapter, 1153 RFE_ADDR_FILT_HI(i), data); 1154 } else { 1155 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >> 1156 23) & 0x1FF; 1157 hash_table[bitnum / 32] |= (1 << (bitnum % 32)); 1158 rfctl |= RFE_CTL_MCAST_HASH_; 1159 } 1160 i++; 1161 } 1162 } 1163 1164 lan743x_dp_write(adapter, DP_SEL_RFE_RAM, 1165 DP_SEL_VHF_VLAN_LEN, 1166 DP_SEL_VHF_HASH_LEN, hash_table); 1167 lan743x_csr_write(adapter, RFE_CTL, rfctl); 1168 } 1169 1170 static int lan743x_dmac_init(struct lan743x_adapter *adapter) 1171 { 1172 u32 data = 0; 1173 1174 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_); 1175 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_, 1176 0, 1000, 20000, 100); 1177 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) { 1178 case DMA_DESCRIPTOR_SPACING_16: 1179 data = DMAC_CFG_MAX_DSPACE_16_; 1180 break; 1181 case DMA_DESCRIPTOR_SPACING_32: 1182 data = DMAC_CFG_MAX_DSPACE_32_; 1183 break; 1184 case DMA_DESCRIPTOR_SPACING_64: 1185 data = DMAC_CFG_MAX_DSPACE_64_; 1186 break; 1187 case DMA_DESCRIPTOR_SPACING_128: 1188 data = DMAC_CFG_MAX_DSPACE_128_; 1189 break; 1190 default: 1191 return -EPERM; 1192 } 1193 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1194 data |= DMAC_CFG_COAL_EN_; 1195 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_; 1196 data |= DMAC_CFG_MAX_READ_REQ_SET_(6); 1197 lan743x_csr_write(adapter, DMAC_CFG, data); 1198 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1); 1199 data |= DMAC_COAL_CFG_TIMER_TX_START_; 1200 data |= DMAC_COAL_CFG_FLUSH_INTS_; 1201 data |= DMAC_COAL_CFG_INT_EXIT_COAL_; 1202 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_; 1203 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A); 1204 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C); 1205 lan743x_csr_write(adapter, DMAC_COAL_CFG, data); 1206 data = DMAC_OBFF_TX_THRES_SET_(0x08); 1207 data |= DMAC_OBFF_RX_THRES_SET_(0x0A); 1208 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data); 1209 return 0; 1210 } 1211 1212 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter, 1213 int tx_channel) 1214 { 1215 u32 dmac_cmd = 0; 1216 1217 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1218 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1219 DMAC_CMD_START_T_(tx_channel)), 1220 (dmac_cmd & 1221 DMAC_CMD_STOP_T_(tx_channel))); 1222 } 1223 1224 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter, 1225 int tx_channel) 1226 { 1227 int timeout = 100; 1228 int result = 0; 1229 1230 while (timeout && 1231 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) == 1232 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1233 usleep_range(1000, 20000); 1234 timeout--; 1235 } 1236 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1237 result = -ENODEV; 1238 return result; 1239 } 1240 1241 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter, 1242 int rx_channel) 1243 { 1244 u32 dmac_cmd = 0; 1245 1246 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1247 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1248 DMAC_CMD_START_R_(rx_channel)), 1249 (dmac_cmd & 1250 DMAC_CMD_STOP_R_(rx_channel))); 1251 } 1252 1253 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter, 1254 int rx_channel) 1255 { 1256 int timeout = 100; 1257 int result = 0; 1258 1259 while (timeout && 1260 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) == 1261 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1262 usleep_range(1000, 20000); 1263 timeout--; 1264 } 1265 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1266 result = -ENODEV; 1267 return result; 1268 } 1269 1270 static void lan743x_tx_release_desc(struct lan743x_tx *tx, 1271 int descriptor_index, bool cleanup) 1272 { 1273 struct lan743x_tx_buffer_info *buffer_info = NULL; 1274 struct lan743x_tx_descriptor *descriptor = NULL; 1275 u32 descriptor_type = 0; 1276 bool ignore_sync; 1277 1278 descriptor = &tx->ring_cpu_ptr[descriptor_index]; 1279 buffer_info = &tx->buffer_info[descriptor_index]; 1280 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE)) 1281 goto done; 1282 1283 descriptor_type = (descriptor->data0) & 1284 TX_DESC_DATA0_DTYPE_MASK_; 1285 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_) 1286 goto clean_up_data_descriptor; 1287 else 1288 goto clear_active; 1289 1290 clean_up_data_descriptor: 1291 if (buffer_info->dma_ptr) { 1292 if (buffer_info->flags & 1293 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) { 1294 dma_unmap_page(&tx->adapter->pdev->dev, 1295 buffer_info->dma_ptr, 1296 buffer_info->buffer_length, 1297 DMA_TO_DEVICE); 1298 } else { 1299 dma_unmap_single(&tx->adapter->pdev->dev, 1300 buffer_info->dma_ptr, 1301 buffer_info->buffer_length, 1302 DMA_TO_DEVICE); 1303 } 1304 buffer_info->dma_ptr = 0; 1305 buffer_info->buffer_length = 0; 1306 } 1307 if (!buffer_info->skb) 1308 goto clear_active; 1309 1310 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) { 1311 dev_kfree_skb(buffer_info->skb); 1312 goto clear_skb; 1313 } 1314 1315 if (cleanup) { 1316 lan743x_ptp_unrequest_tx_timestamp(tx->adapter); 1317 dev_kfree_skb(buffer_info->skb); 1318 } else { 1319 ignore_sync = (buffer_info->flags & 1320 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0; 1321 lan743x_ptp_tx_timestamp_skb(tx->adapter, 1322 buffer_info->skb, ignore_sync); 1323 } 1324 1325 clear_skb: 1326 buffer_info->skb = NULL; 1327 1328 clear_active: 1329 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE; 1330 1331 done: 1332 memset(buffer_info, 0, sizeof(*buffer_info)); 1333 memset(descriptor, 0, sizeof(*descriptor)); 1334 } 1335 1336 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index) 1337 { 1338 return ((++index) % tx->ring_size); 1339 } 1340 1341 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx) 1342 { 1343 while ((*tx->head_cpu_ptr) != (tx->last_head)) { 1344 lan743x_tx_release_desc(tx, tx->last_head, false); 1345 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1346 } 1347 } 1348 1349 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx) 1350 { 1351 u32 original_head = 0; 1352 1353 original_head = tx->last_head; 1354 do { 1355 lan743x_tx_release_desc(tx, tx->last_head, true); 1356 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1357 } while (tx->last_head != original_head); 1358 memset(tx->ring_cpu_ptr, 0, 1359 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size)); 1360 memset(tx->buffer_info, 0, 1361 sizeof(*tx->buffer_info) * (tx->ring_size)); 1362 } 1363 1364 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx, 1365 struct sk_buff *skb) 1366 { 1367 int result = 1; /* 1 for the main skb buffer */ 1368 int nr_frags = 0; 1369 1370 if (skb_is_gso(skb)) 1371 result++; /* requires an extension descriptor */ 1372 nr_frags = skb_shinfo(skb)->nr_frags; 1373 result += nr_frags; /* 1 for each fragment buffer */ 1374 return result; 1375 } 1376 1377 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx) 1378 { 1379 int last_head = tx->last_head; 1380 int last_tail = tx->last_tail; 1381 1382 if (last_tail >= last_head) 1383 return tx->ring_size - last_tail + last_head - 1; 1384 else 1385 return last_head - last_tail - 1; 1386 } 1387 1388 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx, 1389 bool enable_timestamping, 1390 bool enable_onestep_sync) 1391 { 1392 if (enable_timestamping) 1393 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED; 1394 else 1395 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED; 1396 if (enable_onestep_sync) 1397 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC; 1398 else 1399 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC; 1400 } 1401 1402 static int lan743x_tx_frame_start(struct lan743x_tx *tx, 1403 unsigned char *first_buffer, 1404 unsigned int first_buffer_length, 1405 unsigned int frame_length, 1406 bool time_stamp, 1407 bool check_sum) 1408 { 1409 /* called only from within lan743x_tx_xmit_frame. 1410 * assuming tx->ring_lock has already been acquired. 1411 */ 1412 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1413 struct lan743x_tx_buffer_info *buffer_info = NULL; 1414 struct lan743x_adapter *adapter = tx->adapter; 1415 struct device *dev = &adapter->pdev->dev; 1416 dma_addr_t dma_ptr; 1417 1418 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS; 1419 tx->frame_first = tx->last_tail; 1420 tx->frame_tail = tx->frame_first; 1421 1422 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1423 buffer_info = &tx->buffer_info[tx->frame_tail]; 1424 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length, 1425 DMA_TO_DEVICE); 1426 if (dma_mapping_error(dev, dma_ptr)) 1427 return -ENOMEM; 1428 1429 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1430 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1431 tx_descriptor->data3 = (frame_length << 16) & 1432 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1433 1434 buffer_info->skb = NULL; 1435 buffer_info->dma_ptr = dma_ptr; 1436 buffer_info->buffer_length = first_buffer_length; 1437 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1438 1439 tx->frame_data0 = (first_buffer_length & 1440 TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1441 TX_DESC_DATA0_DTYPE_DATA_ | 1442 TX_DESC_DATA0_FS_ | 1443 TX_DESC_DATA0_FCS_; 1444 if (time_stamp) 1445 tx->frame_data0 |= TX_DESC_DATA0_TSE_; 1446 1447 if (check_sum) 1448 tx->frame_data0 |= TX_DESC_DATA0_ICE_ | 1449 TX_DESC_DATA0_IPE_ | 1450 TX_DESC_DATA0_TPE_; 1451 1452 /* data0 will be programmed in one of other frame assembler functions */ 1453 return 0; 1454 } 1455 1456 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx, 1457 unsigned int frame_length, 1458 int nr_frags) 1459 { 1460 /* called only from within lan743x_tx_xmit_frame. 1461 * assuming tx->ring_lock has already been acquired. 1462 */ 1463 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1464 struct lan743x_tx_buffer_info *buffer_info = NULL; 1465 1466 /* wrap up previous descriptor */ 1467 tx->frame_data0 |= TX_DESC_DATA0_EXT_; 1468 if (nr_frags <= 0) { 1469 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1470 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1471 } 1472 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1473 tx_descriptor->data0 = tx->frame_data0; 1474 1475 /* move to next descriptor */ 1476 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1477 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1478 buffer_info = &tx->buffer_info[tx->frame_tail]; 1479 1480 /* add extension descriptor */ 1481 tx_descriptor->data1 = 0; 1482 tx_descriptor->data2 = 0; 1483 tx_descriptor->data3 = 0; 1484 1485 buffer_info->skb = NULL; 1486 buffer_info->dma_ptr = 0; 1487 buffer_info->buffer_length = 0; 1488 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1489 1490 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) | 1491 TX_DESC_DATA0_DTYPE_EXT_ | 1492 TX_DESC_DATA0_EXT_LSO_; 1493 1494 /* data0 will be programmed in one of other frame assembler functions */ 1495 } 1496 1497 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx, 1498 const skb_frag_t *fragment, 1499 unsigned int frame_length) 1500 { 1501 /* called only from within lan743x_tx_xmit_frame 1502 * assuming tx->ring_lock has already been acquired 1503 */ 1504 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1505 struct lan743x_tx_buffer_info *buffer_info = NULL; 1506 struct lan743x_adapter *adapter = tx->adapter; 1507 struct device *dev = &adapter->pdev->dev; 1508 unsigned int fragment_length = 0; 1509 dma_addr_t dma_ptr; 1510 1511 fragment_length = skb_frag_size(fragment); 1512 if (!fragment_length) 1513 return 0; 1514 1515 /* wrap up previous descriptor */ 1516 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1517 tx_descriptor->data0 = tx->frame_data0; 1518 1519 /* move to next descriptor */ 1520 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1521 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1522 buffer_info = &tx->buffer_info[tx->frame_tail]; 1523 dma_ptr = skb_frag_dma_map(dev, fragment, 1524 0, fragment_length, 1525 DMA_TO_DEVICE); 1526 if (dma_mapping_error(dev, dma_ptr)) { 1527 int desc_index; 1528 1529 /* cleanup all previously setup descriptors */ 1530 desc_index = tx->frame_first; 1531 while (desc_index != tx->frame_tail) { 1532 lan743x_tx_release_desc(tx, desc_index, true); 1533 desc_index = lan743x_tx_next_index(tx, desc_index); 1534 } 1535 dma_wmb(); 1536 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1537 tx->frame_first = 0; 1538 tx->frame_data0 = 0; 1539 tx->frame_tail = 0; 1540 return -ENOMEM; 1541 } 1542 1543 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1544 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1545 tx_descriptor->data3 = (frame_length << 16) & 1546 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1547 1548 buffer_info->skb = NULL; 1549 buffer_info->dma_ptr = dma_ptr; 1550 buffer_info->buffer_length = fragment_length; 1551 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1552 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT; 1553 1554 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1555 TX_DESC_DATA0_DTYPE_DATA_ | 1556 TX_DESC_DATA0_FCS_; 1557 1558 /* data0 will be programmed in one of other frame assembler functions */ 1559 return 0; 1560 } 1561 1562 static void lan743x_tx_frame_end(struct lan743x_tx *tx, 1563 struct sk_buff *skb, 1564 bool time_stamp, 1565 bool ignore_sync) 1566 { 1567 /* called only from within lan743x_tx_xmit_frame 1568 * assuming tx->ring_lock has already been acquired 1569 */ 1570 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1571 struct lan743x_tx_buffer_info *buffer_info = NULL; 1572 struct lan743x_adapter *adapter = tx->adapter; 1573 u32 tx_tail_flags = 0; 1574 1575 /* wrap up previous descriptor */ 1576 if ((tx->frame_data0 & TX_DESC_DATA0_DTYPE_MASK_) == 1577 TX_DESC_DATA0_DTYPE_DATA_) { 1578 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1579 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1580 } 1581 1582 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1583 buffer_info = &tx->buffer_info[tx->frame_tail]; 1584 buffer_info->skb = skb; 1585 if (time_stamp) 1586 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED; 1587 if (ignore_sync) 1588 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC; 1589 1590 tx_descriptor->data0 = tx->frame_data0; 1591 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1592 tx->last_tail = tx->frame_tail; 1593 1594 dma_wmb(); 1595 1596 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 1597 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_; 1598 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) 1599 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ | 1600 TX_TAIL_SET_TOP_INT_EN_; 1601 1602 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1603 tx_tail_flags | tx->frame_tail); 1604 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1605 } 1606 1607 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx, 1608 struct sk_buff *skb) 1609 { 1610 int required_number_of_descriptors = 0; 1611 unsigned int start_frame_length = 0; 1612 unsigned int frame_length = 0; 1613 unsigned int head_length = 0; 1614 unsigned long irq_flags = 0; 1615 bool do_timestamp = false; 1616 bool ignore_sync = false; 1617 int nr_frags = 0; 1618 bool gso = false; 1619 int j; 1620 1621 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb); 1622 1623 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1624 if (required_number_of_descriptors > 1625 lan743x_tx_get_avail_desc(tx)) { 1626 if (required_number_of_descriptors > (tx->ring_size - 1)) { 1627 dev_kfree_skb(skb); 1628 } else { 1629 /* save to overflow buffer */ 1630 tx->overflow_skb = skb; 1631 netif_stop_queue(tx->adapter->netdev); 1632 } 1633 goto unlock; 1634 } 1635 1636 /* space available, transmit skb */ 1637 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 1638 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) && 1639 (lan743x_ptp_request_tx_timestamp(tx->adapter))) { 1640 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 1641 do_timestamp = true; 1642 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC) 1643 ignore_sync = true; 1644 } 1645 head_length = skb_headlen(skb); 1646 frame_length = skb_pagelen(skb); 1647 nr_frags = skb_shinfo(skb)->nr_frags; 1648 start_frame_length = frame_length; 1649 gso = skb_is_gso(skb); 1650 if (gso) { 1651 start_frame_length = max(skb_shinfo(skb)->gso_size, 1652 (unsigned short)8); 1653 } 1654 1655 if (lan743x_tx_frame_start(tx, 1656 skb->data, head_length, 1657 start_frame_length, 1658 do_timestamp, 1659 skb->ip_summed == CHECKSUM_PARTIAL)) { 1660 dev_kfree_skb(skb); 1661 goto unlock; 1662 } 1663 1664 if (gso) 1665 lan743x_tx_frame_add_lso(tx, frame_length, nr_frags); 1666 1667 if (nr_frags <= 0) 1668 goto finish; 1669 1670 for (j = 0; j < nr_frags; j++) { 1671 const skb_frag_t *frag = &(skb_shinfo(skb)->frags[j]); 1672 1673 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) { 1674 /* upon error no need to call 1675 * lan743x_tx_frame_end 1676 * frame assembler clean up was performed inside 1677 * lan743x_tx_frame_add_fragment 1678 */ 1679 dev_kfree_skb(skb); 1680 goto unlock; 1681 } 1682 } 1683 1684 finish: 1685 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync); 1686 1687 unlock: 1688 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1689 return NETDEV_TX_OK; 1690 } 1691 1692 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight) 1693 { 1694 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi); 1695 struct lan743x_adapter *adapter = tx->adapter; 1696 bool start_transmitter = false; 1697 unsigned long irq_flags = 0; 1698 u32 ioc_bit = 0; 1699 u32 int_sts = 0; 1700 1701 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 1702 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 1703 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) 1704 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit); 1705 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1706 1707 /* clean up tx ring */ 1708 lan743x_tx_release_completed_descriptors(tx); 1709 if (netif_queue_stopped(adapter->netdev)) { 1710 if (tx->overflow_skb) { 1711 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <= 1712 lan743x_tx_get_avail_desc(tx)) 1713 start_transmitter = true; 1714 } else { 1715 netif_wake_queue(adapter->netdev); 1716 } 1717 } 1718 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1719 1720 if (start_transmitter) { 1721 /* space is now available, transmit overflow skb */ 1722 lan743x_tx_xmit_frame(tx, tx->overflow_skb); 1723 tx->overflow_skb = NULL; 1724 netif_wake_queue(adapter->netdev); 1725 } 1726 1727 if (!napi_complete(napi)) 1728 goto done; 1729 1730 /* enable isr */ 1731 lan743x_csr_write(adapter, INT_EN_SET, 1732 INT_BIT_DMA_TX_(tx->channel_number)); 1733 lan743x_csr_read(adapter, INT_STS); 1734 1735 done: 1736 return 0; 1737 } 1738 1739 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx) 1740 { 1741 if (tx->head_cpu_ptr) { 1742 pci_free_consistent(tx->adapter->pdev, 1743 sizeof(*tx->head_cpu_ptr), 1744 (void *)(tx->head_cpu_ptr), 1745 tx->head_dma_ptr); 1746 tx->head_cpu_ptr = NULL; 1747 tx->head_dma_ptr = 0; 1748 } 1749 kfree(tx->buffer_info); 1750 tx->buffer_info = NULL; 1751 1752 if (tx->ring_cpu_ptr) { 1753 pci_free_consistent(tx->adapter->pdev, 1754 tx->ring_allocation_size, 1755 tx->ring_cpu_ptr, 1756 tx->ring_dma_ptr); 1757 tx->ring_allocation_size = 0; 1758 tx->ring_cpu_ptr = NULL; 1759 tx->ring_dma_ptr = 0; 1760 } 1761 tx->ring_size = 0; 1762 } 1763 1764 static int lan743x_tx_ring_init(struct lan743x_tx *tx) 1765 { 1766 size_t ring_allocation_size = 0; 1767 void *cpu_ptr = NULL; 1768 dma_addr_t dma_ptr; 1769 int ret = -ENOMEM; 1770 1771 tx->ring_size = LAN743X_TX_RING_SIZE; 1772 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) { 1773 ret = -EINVAL; 1774 goto cleanup; 1775 } 1776 ring_allocation_size = ALIGN(tx->ring_size * 1777 sizeof(struct lan743x_tx_descriptor), 1778 PAGE_SIZE); 1779 dma_ptr = 0; 1780 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1781 ring_allocation_size, &dma_ptr); 1782 if (!cpu_ptr) { 1783 ret = -ENOMEM; 1784 goto cleanup; 1785 } 1786 1787 tx->ring_allocation_size = ring_allocation_size; 1788 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr; 1789 tx->ring_dma_ptr = dma_ptr; 1790 1791 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL); 1792 if (!cpu_ptr) { 1793 ret = -ENOMEM; 1794 goto cleanup; 1795 } 1796 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr; 1797 dma_ptr = 0; 1798 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1799 sizeof(*tx->head_cpu_ptr), &dma_ptr); 1800 if (!cpu_ptr) { 1801 ret = -ENOMEM; 1802 goto cleanup; 1803 } 1804 1805 tx->head_cpu_ptr = cpu_ptr; 1806 tx->head_dma_ptr = dma_ptr; 1807 if (tx->head_dma_ptr & 0x3) { 1808 ret = -ENOMEM; 1809 goto cleanup; 1810 } 1811 1812 return 0; 1813 1814 cleanup: 1815 lan743x_tx_ring_cleanup(tx); 1816 return ret; 1817 } 1818 1819 static void lan743x_tx_close(struct lan743x_tx *tx) 1820 { 1821 struct lan743x_adapter *adapter = tx->adapter; 1822 1823 lan743x_csr_write(adapter, 1824 DMAC_CMD, 1825 DMAC_CMD_STOP_T_(tx->channel_number)); 1826 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number); 1827 1828 lan743x_csr_write(adapter, 1829 DMAC_INT_EN_CLR, 1830 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1831 lan743x_csr_write(adapter, INT_EN_CLR, 1832 INT_BIT_DMA_TX_(tx->channel_number)); 1833 napi_disable(&tx->napi); 1834 netif_napi_del(&tx->napi); 1835 1836 lan743x_csr_write(adapter, FCT_TX_CTL, 1837 FCT_TX_CTL_DIS_(tx->channel_number)); 1838 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1839 FCT_TX_CTL_EN_(tx->channel_number), 1840 0, 1000, 20000, 100); 1841 1842 lan743x_tx_release_all_descriptors(tx); 1843 1844 if (tx->overflow_skb) { 1845 dev_kfree_skb(tx->overflow_skb); 1846 tx->overflow_skb = NULL; 1847 } 1848 1849 lan743x_tx_ring_cleanup(tx); 1850 } 1851 1852 static int lan743x_tx_open(struct lan743x_tx *tx) 1853 { 1854 struct lan743x_adapter *adapter = NULL; 1855 u32 data = 0; 1856 int ret; 1857 1858 adapter = tx->adapter; 1859 ret = lan743x_tx_ring_init(tx); 1860 if (ret) 1861 return ret; 1862 1863 /* initialize fifo */ 1864 lan743x_csr_write(adapter, FCT_TX_CTL, 1865 FCT_TX_CTL_RESET_(tx->channel_number)); 1866 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1867 FCT_TX_CTL_RESET_(tx->channel_number), 1868 0, 1000, 20000, 100); 1869 1870 /* enable fifo */ 1871 lan743x_csr_write(adapter, FCT_TX_CTL, 1872 FCT_TX_CTL_EN_(tx->channel_number)); 1873 1874 /* reset tx channel */ 1875 lan743x_csr_write(adapter, DMAC_CMD, 1876 DMAC_CMD_TX_SWR_(tx->channel_number)); 1877 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 1878 DMAC_CMD_TX_SWR_(tx->channel_number), 1879 0, 1000, 20000, 100); 1880 1881 /* Write TX_BASE_ADDR */ 1882 lan743x_csr_write(adapter, 1883 TX_BASE_ADDRH(tx->channel_number), 1884 DMA_ADDR_HIGH32(tx->ring_dma_ptr)); 1885 lan743x_csr_write(adapter, 1886 TX_BASE_ADDRL(tx->channel_number), 1887 DMA_ADDR_LOW32(tx->ring_dma_ptr)); 1888 1889 /* Write TX_CFG_B */ 1890 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number)); 1891 data &= ~TX_CFG_B_TX_RING_LEN_MASK_; 1892 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_); 1893 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1894 data |= TX_CFG_B_TDMABL_512_; 1895 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data); 1896 1897 /* Write TX_CFG_A */ 1898 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_; 1899 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 1900 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_; 1901 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10); 1902 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04); 1903 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07); 1904 } 1905 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data); 1906 1907 /* Write TX_HEAD_WRITEBACK_ADDR */ 1908 lan743x_csr_write(adapter, 1909 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number), 1910 DMA_ADDR_HIGH32(tx->head_dma_ptr)); 1911 lan743x_csr_write(adapter, 1912 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number), 1913 DMA_ADDR_LOW32(tx->head_dma_ptr)); 1914 1915 /* set last head */ 1916 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number)); 1917 1918 /* write TX_TAIL */ 1919 tx->last_tail = 0; 1920 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1921 (u32)(tx->last_tail)); 1922 tx->vector_flags = lan743x_intr_get_vector_flags(adapter, 1923 INT_BIT_DMA_TX_ 1924 (tx->channel_number)); 1925 netif_tx_napi_add(adapter->netdev, 1926 &tx->napi, lan743x_tx_napi_poll, 1927 tx->ring_size - 1); 1928 napi_enable(&tx->napi); 1929 1930 data = 0; 1931 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 1932 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_; 1933 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 1934 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_; 1935 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 1936 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_; 1937 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 1938 data |= TX_CFG_C_TX_INT_EN_R2C_; 1939 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data); 1940 1941 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)) 1942 lan743x_csr_write(adapter, INT_EN_SET, 1943 INT_BIT_DMA_TX_(tx->channel_number)); 1944 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 1945 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1946 1947 /* start dmac channel */ 1948 lan743x_csr_write(adapter, DMAC_CMD, 1949 DMAC_CMD_START_T_(tx->channel_number)); 1950 return 0; 1951 } 1952 1953 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index) 1954 { 1955 return ((++index) % rx->ring_size); 1956 } 1957 1958 static struct sk_buff *lan743x_rx_allocate_skb(struct lan743x_rx *rx) 1959 { 1960 int length = 0; 1961 1962 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1963 return __netdev_alloc_skb(rx->adapter->netdev, 1964 length, GFP_ATOMIC | GFP_DMA); 1965 } 1966 1967 static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index, 1968 struct sk_buff *skb) 1969 { 1970 struct lan743x_rx_buffer_info *buffer_info; 1971 struct lan743x_rx_descriptor *descriptor; 1972 int length = 0; 1973 1974 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1975 descriptor = &rx->ring_cpu_ptr[index]; 1976 buffer_info = &rx->buffer_info[index]; 1977 buffer_info->skb = skb; 1978 if (!(buffer_info->skb)) 1979 return -ENOMEM; 1980 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev, 1981 buffer_info->skb->data, 1982 length, 1983 DMA_FROM_DEVICE); 1984 if (dma_mapping_error(&rx->adapter->pdev->dev, 1985 buffer_info->dma_ptr)) { 1986 buffer_info->dma_ptr = 0; 1987 return -ENOMEM; 1988 } 1989 1990 buffer_info->buffer_length = length; 1991 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1992 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1993 descriptor->data3 = 0; 1994 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1995 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1996 skb_reserve(buffer_info->skb, RX_HEAD_PADDING); 1997 1998 return 0; 1999 } 2000 2001 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index) 2002 { 2003 struct lan743x_rx_buffer_info *buffer_info; 2004 struct lan743x_rx_descriptor *descriptor; 2005 2006 descriptor = &rx->ring_cpu_ptr[index]; 2007 buffer_info = &rx->buffer_info[index]; 2008 2009 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 2010 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 2011 descriptor->data3 = 0; 2012 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 2013 ((buffer_info->buffer_length) & 2014 RX_DESC_DATA0_BUF_LENGTH_MASK_)); 2015 } 2016 2017 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index) 2018 { 2019 struct lan743x_rx_buffer_info *buffer_info; 2020 struct lan743x_rx_descriptor *descriptor; 2021 2022 descriptor = &rx->ring_cpu_ptr[index]; 2023 buffer_info = &rx->buffer_info[index]; 2024 2025 memset(descriptor, 0, sizeof(*descriptor)); 2026 2027 if (buffer_info->dma_ptr) { 2028 dma_unmap_single(&rx->adapter->pdev->dev, 2029 buffer_info->dma_ptr, 2030 buffer_info->buffer_length, 2031 DMA_FROM_DEVICE); 2032 buffer_info->dma_ptr = 0; 2033 } 2034 2035 if (buffer_info->skb) { 2036 dev_kfree_skb(buffer_info->skb); 2037 buffer_info->skb = NULL; 2038 } 2039 2040 memset(buffer_info, 0, sizeof(*buffer_info)); 2041 } 2042 2043 static int lan743x_rx_process_packet(struct lan743x_rx *rx) 2044 { 2045 struct skb_shared_hwtstamps *hwtstamps = NULL; 2046 int result = RX_PROCESS_RESULT_NOTHING_TO_DO; 2047 struct lan743x_rx_buffer_info *buffer_info; 2048 struct lan743x_rx_descriptor *descriptor; 2049 int current_head_index = -1; 2050 int extension_index = -1; 2051 int first_index = -1; 2052 int last_index = -1; 2053 2054 current_head_index = *rx->head_cpu_ptr; 2055 if (current_head_index < 0 || current_head_index >= rx->ring_size) 2056 goto done; 2057 2058 if (rx->last_head < 0 || rx->last_head >= rx->ring_size) 2059 goto done; 2060 2061 if (rx->last_head != current_head_index) { 2062 descriptor = &rx->ring_cpu_ptr[rx->last_head]; 2063 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2064 goto done; 2065 2066 if (!(descriptor->data0 & RX_DESC_DATA0_FS_)) 2067 goto done; 2068 2069 first_index = rx->last_head; 2070 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2071 last_index = rx->last_head; 2072 } else { 2073 int index; 2074 2075 index = lan743x_rx_next_index(rx, first_index); 2076 while (index != current_head_index) { 2077 descriptor = &rx->ring_cpu_ptr[index]; 2078 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2079 goto done; 2080 2081 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2082 last_index = index; 2083 break; 2084 } 2085 index = lan743x_rx_next_index(rx, index); 2086 } 2087 } 2088 if (last_index >= 0) { 2089 descriptor = &rx->ring_cpu_ptr[last_index]; 2090 if (descriptor->data0 & RX_DESC_DATA0_EXT_) { 2091 /* extension is expected to follow */ 2092 int index = lan743x_rx_next_index(rx, 2093 last_index); 2094 if (index != current_head_index) { 2095 descriptor = &rx->ring_cpu_ptr[index]; 2096 if (descriptor->data0 & 2097 RX_DESC_DATA0_OWN_) { 2098 goto done; 2099 } 2100 if (descriptor->data0 & 2101 RX_DESC_DATA0_EXT_) { 2102 extension_index = index; 2103 } else { 2104 goto done; 2105 } 2106 } else { 2107 /* extension is not yet available */ 2108 /* prevent processing of this packet */ 2109 first_index = -1; 2110 last_index = -1; 2111 } 2112 } 2113 } 2114 } 2115 if (first_index >= 0 && last_index >= 0) { 2116 int real_last_index = last_index; 2117 struct sk_buff *skb = NULL; 2118 u32 ts_sec = 0; 2119 u32 ts_nsec = 0; 2120 2121 /* packet is available */ 2122 if (first_index == last_index) { 2123 /* single buffer packet */ 2124 struct sk_buff *new_skb = NULL; 2125 int packet_length; 2126 2127 new_skb = lan743x_rx_allocate_skb(rx); 2128 if (!new_skb) { 2129 /* failed to allocate next skb. 2130 * Memory is very low. 2131 * Drop this packet and reuse buffer. 2132 */ 2133 lan743x_rx_reuse_ring_element(rx, first_index); 2134 goto process_extension; 2135 } 2136 2137 buffer_info = &rx->buffer_info[first_index]; 2138 skb = buffer_info->skb; 2139 descriptor = &rx->ring_cpu_ptr[first_index]; 2140 2141 /* unmap from dma */ 2142 if (buffer_info->dma_ptr) { 2143 dma_unmap_single(&rx->adapter->pdev->dev, 2144 buffer_info->dma_ptr, 2145 buffer_info->buffer_length, 2146 DMA_FROM_DEVICE); 2147 buffer_info->dma_ptr = 0; 2148 buffer_info->buffer_length = 0; 2149 } 2150 buffer_info->skb = NULL; 2151 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_ 2152 (descriptor->data0); 2153 skb_put(skb, packet_length - 4); 2154 skb->protocol = eth_type_trans(skb, 2155 rx->adapter->netdev); 2156 lan743x_rx_init_ring_element(rx, first_index, new_skb); 2157 } else { 2158 int index = first_index; 2159 2160 /* multi buffer packet not supported */ 2161 /* this should not happen since 2162 * buffers are allocated to be at least jumbo size 2163 */ 2164 2165 /* clean up buffers */ 2166 if (first_index <= last_index) { 2167 while ((index >= first_index) && 2168 (index <= last_index)) { 2169 lan743x_rx_reuse_ring_element(rx, 2170 index); 2171 index = lan743x_rx_next_index(rx, 2172 index); 2173 } 2174 } else { 2175 while ((index >= first_index) || 2176 (index <= last_index)) { 2177 lan743x_rx_reuse_ring_element(rx, 2178 index); 2179 index = lan743x_rx_next_index(rx, 2180 index); 2181 } 2182 } 2183 } 2184 2185 process_extension: 2186 if (extension_index >= 0) { 2187 descriptor = &rx->ring_cpu_ptr[extension_index]; 2188 buffer_info = &rx->buffer_info[extension_index]; 2189 2190 ts_sec = descriptor->data1; 2191 ts_nsec = (descriptor->data2 & 2192 RX_DESC_DATA2_TS_NS_MASK_); 2193 lan743x_rx_reuse_ring_element(rx, extension_index); 2194 real_last_index = extension_index; 2195 } 2196 2197 if (!skb) { 2198 result = RX_PROCESS_RESULT_PACKET_DROPPED; 2199 goto move_forward; 2200 } 2201 2202 if (extension_index < 0) 2203 goto pass_packet_to_os; 2204 hwtstamps = skb_hwtstamps(skb); 2205 if (hwtstamps) 2206 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec); 2207 2208 pass_packet_to_os: 2209 /* pass packet to OS */ 2210 napi_gro_receive(&rx->napi, skb); 2211 result = RX_PROCESS_RESULT_PACKET_RECEIVED; 2212 2213 move_forward: 2214 /* push tail and head forward */ 2215 rx->last_tail = real_last_index; 2216 rx->last_head = lan743x_rx_next_index(rx, real_last_index); 2217 } 2218 done: 2219 return result; 2220 } 2221 2222 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight) 2223 { 2224 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi); 2225 struct lan743x_adapter *adapter = rx->adapter; 2226 u32 rx_tail_flags = 0; 2227 int count; 2228 2229 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) { 2230 /* clear int status bit before reading packet */ 2231 lan743x_csr_write(adapter, DMAC_INT_STS, 2232 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2233 } 2234 count = 0; 2235 while (count < weight) { 2236 int rx_process_result = lan743x_rx_process_packet(rx); 2237 2238 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) { 2239 count++; 2240 } else if (rx_process_result == 2241 RX_PROCESS_RESULT_NOTHING_TO_DO) { 2242 break; 2243 } else if (rx_process_result == 2244 RX_PROCESS_RESULT_PACKET_DROPPED) { 2245 continue; 2246 } 2247 } 2248 rx->frame_count += count; 2249 if (count == weight) 2250 goto done; 2251 2252 if (!napi_complete_done(napi, count)) 2253 goto done; 2254 2255 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 2256 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_; 2257 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) { 2258 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_; 2259 } else { 2260 lan743x_csr_write(adapter, INT_EN_SET, 2261 INT_BIT_DMA_RX_(rx->channel_number)); 2262 } 2263 2264 /* update RX_TAIL */ 2265 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2266 rx_tail_flags | rx->last_tail); 2267 done: 2268 return count; 2269 } 2270 2271 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx) 2272 { 2273 if (rx->buffer_info && rx->ring_cpu_ptr) { 2274 int index; 2275 2276 for (index = 0; index < rx->ring_size; index++) 2277 lan743x_rx_release_ring_element(rx, index); 2278 } 2279 2280 if (rx->head_cpu_ptr) { 2281 pci_free_consistent(rx->adapter->pdev, 2282 sizeof(*rx->head_cpu_ptr), 2283 rx->head_cpu_ptr, 2284 rx->head_dma_ptr); 2285 rx->head_cpu_ptr = NULL; 2286 rx->head_dma_ptr = 0; 2287 } 2288 2289 kfree(rx->buffer_info); 2290 rx->buffer_info = NULL; 2291 2292 if (rx->ring_cpu_ptr) { 2293 pci_free_consistent(rx->adapter->pdev, 2294 rx->ring_allocation_size, 2295 rx->ring_cpu_ptr, 2296 rx->ring_dma_ptr); 2297 rx->ring_allocation_size = 0; 2298 rx->ring_cpu_ptr = NULL; 2299 rx->ring_dma_ptr = 0; 2300 } 2301 2302 rx->ring_size = 0; 2303 rx->last_head = 0; 2304 } 2305 2306 static int lan743x_rx_ring_init(struct lan743x_rx *rx) 2307 { 2308 size_t ring_allocation_size = 0; 2309 dma_addr_t dma_ptr = 0; 2310 void *cpu_ptr = NULL; 2311 int ret = -ENOMEM; 2312 int index = 0; 2313 2314 rx->ring_size = LAN743X_RX_RING_SIZE; 2315 if (rx->ring_size <= 1) { 2316 ret = -EINVAL; 2317 goto cleanup; 2318 } 2319 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) { 2320 ret = -EINVAL; 2321 goto cleanup; 2322 } 2323 ring_allocation_size = ALIGN(rx->ring_size * 2324 sizeof(struct lan743x_rx_descriptor), 2325 PAGE_SIZE); 2326 dma_ptr = 0; 2327 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2328 ring_allocation_size, &dma_ptr); 2329 if (!cpu_ptr) { 2330 ret = -ENOMEM; 2331 goto cleanup; 2332 } 2333 rx->ring_allocation_size = ring_allocation_size; 2334 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr; 2335 rx->ring_dma_ptr = dma_ptr; 2336 2337 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info), 2338 GFP_KERNEL); 2339 if (!cpu_ptr) { 2340 ret = -ENOMEM; 2341 goto cleanup; 2342 } 2343 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr; 2344 dma_ptr = 0; 2345 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2346 sizeof(*rx->head_cpu_ptr), &dma_ptr); 2347 if (!cpu_ptr) { 2348 ret = -ENOMEM; 2349 goto cleanup; 2350 } 2351 2352 rx->head_cpu_ptr = cpu_ptr; 2353 rx->head_dma_ptr = dma_ptr; 2354 if (rx->head_dma_ptr & 0x3) { 2355 ret = -ENOMEM; 2356 goto cleanup; 2357 } 2358 2359 rx->last_head = 0; 2360 for (index = 0; index < rx->ring_size; index++) { 2361 struct sk_buff *new_skb = lan743x_rx_allocate_skb(rx); 2362 2363 ret = lan743x_rx_init_ring_element(rx, index, new_skb); 2364 if (ret) 2365 goto cleanup; 2366 } 2367 return 0; 2368 2369 cleanup: 2370 lan743x_rx_ring_cleanup(rx); 2371 return ret; 2372 } 2373 2374 static void lan743x_rx_close(struct lan743x_rx *rx) 2375 { 2376 struct lan743x_adapter *adapter = rx->adapter; 2377 2378 lan743x_csr_write(adapter, FCT_RX_CTL, 2379 FCT_RX_CTL_DIS_(rx->channel_number)); 2380 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2381 FCT_RX_CTL_EN_(rx->channel_number), 2382 0, 1000, 20000, 100); 2383 2384 lan743x_csr_write(adapter, DMAC_CMD, 2385 DMAC_CMD_STOP_R_(rx->channel_number)); 2386 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number); 2387 2388 lan743x_csr_write(adapter, DMAC_INT_EN_CLR, 2389 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2390 lan743x_csr_write(adapter, INT_EN_CLR, 2391 INT_BIT_DMA_RX_(rx->channel_number)); 2392 napi_disable(&rx->napi); 2393 2394 netif_napi_del(&rx->napi); 2395 2396 lan743x_rx_ring_cleanup(rx); 2397 } 2398 2399 static int lan743x_rx_open(struct lan743x_rx *rx) 2400 { 2401 struct lan743x_adapter *adapter = rx->adapter; 2402 u32 data = 0; 2403 int ret; 2404 2405 rx->frame_count = 0; 2406 ret = lan743x_rx_ring_init(rx); 2407 if (ret) 2408 goto return_error; 2409 2410 netif_napi_add(adapter->netdev, 2411 &rx->napi, lan743x_rx_napi_poll, 2412 rx->ring_size - 1); 2413 2414 lan743x_csr_write(adapter, DMAC_CMD, 2415 DMAC_CMD_RX_SWR_(rx->channel_number)); 2416 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 2417 DMAC_CMD_RX_SWR_(rx->channel_number), 2418 0, 1000, 20000, 100); 2419 2420 /* set ring base address */ 2421 lan743x_csr_write(adapter, 2422 RX_BASE_ADDRH(rx->channel_number), 2423 DMA_ADDR_HIGH32(rx->ring_dma_ptr)); 2424 lan743x_csr_write(adapter, 2425 RX_BASE_ADDRL(rx->channel_number), 2426 DMA_ADDR_LOW32(rx->ring_dma_ptr)); 2427 2428 /* set rx write back address */ 2429 lan743x_csr_write(adapter, 2430 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number), 2431 DMA_ADDR_HIGH32(rx->head_dma_ptr)); 2432 lan743x_csr_write(adapter, 2433 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number), 2434 DMA_ADDR_LOW32(rx->head_dma_ptr)); 2435 data = RX_CFG_A_RX_HP_WB_EN_; 2436 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 2437 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ | 2438 RX_CFG_A_RX_WB_THRES_SET_(0x7) | 2439 RX_CFG_A_RX_PF_THRES_SET_(16) | 2440 RX_CFG_A_RX_PF_PRI_THRES_SET_(4)); 2441 } 2442 2443 /* set RX_CFG_A */ 2444 lan743x_csr_write(adapter, 2445 RX_CFG_A(rx->channel_number), data); 2446 2447 /* set RX_CFG_B */ 2448 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number)); 2449 data &= ~RX_CFG_B_RX_PAD_MASK_; 2450 if (!RX_HEAD_PADDING) 2451 data |= RX_CFG_B_RX_PAD_0_; 2452 else 2453 data |= RX_CFG_B_RX_PAD_2_; 2454 data &= ~RX_CFG_B_RX_RING_LEN_MASK_; 2455 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_); 2456 data |= RX_CFG_B_TS_ALL_RX_; 2457 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 2458 data |= RX_CFG_B_RDMABL_512_; 2459 2460 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data); 2461 rx->vector_flags = lan743x_intr_get_vector_flags(adapter, 2462 INT_BIT_DMA_RX_ 2463 (rx->channel_number)); 2464 2465 /* set RX_CFG_C */ 2466 data = 0; 2467 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 2468 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_; 2469 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 2470 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_; 2471 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 2472 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_; 2473 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 2474 data |= RX_CFG_C_RX_INT_EN_R2C_; 2475 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data); 2476 2477 rx->last_tail = ((u32)(rx->ring_size - 1)); 2478 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2479 rx->last_tail); 2480 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number)); 2481 if (rx->last_head) { 2482 ret = -EIO; 2483 goto napi_delete; 2484 } 2485 2486 napi_enable(&rx->napi); 2487 2488 lan743x_csr_write(adapter, INT_EN_SET, 2489 INT_BIT_DMA_RX_(rx->channel_number)); 2490 lan743x_csr_write(adapter, DMAC_INT_STS, 2491 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2492 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 2493 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2494 lan743x_csr_write(adapter, DMAC_CMD, 2495 DMAC_CMD_START_R_(rx->channel_number)); 2496 2497 /* initialize fifo */ 2498 lan743x_csr_write(adapter, FCT_RX_CTL, 2499 FCT_RX_CTL_RESET_(rx->channel_number)); 2500 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2501 FCT_RX_CTL_RESET_(rx->channel_number), 2502 0, 1000, 20000, 100); 2503 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number), 2504 FCT_FLOW_CTL_REQ_EN_ | 2505 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) | 2506 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA)); 2507 2508 /* enable fifo */ 2509 lan743x_csr_write(adapter, FCT_RX_CTL, 2510 FCT_RX_CTL_EN_(rx->channel_number)); 2511 return 0; 2512 2513 napi_delete: 2514 netif_napi_del(&rx->napi); 2515 lan743x_rx_ring_cleanup(rx); 2516 2517 return_error: 2518 return ret; 2519 } 2520 2521 static int lan743x_netdev_close(struct net_device *netdev) 2522 { 2523 struct lan743x_adapter *adapter = netdev_priv(netdev); 2524 int index; 2525 2526 lan743x_tx_close(&adapter->tx[0]); 2527 2528 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) 2529 lan743x_rx_close(&adapter->rx[index]); 2530 2531 lan743x_ptp_close(adapter); 2532 2533 lan743x_phy_close(adapter); 2534 2535 lan743x_mac_close(adapter); 2536 2537 lan743x_intr_close(adapter); 2538 2539 return 0; 2540 } 2541 2542 static int lan743x_netdev_open(struct net_device *netdev) 2543 { 2544 struct lan743x_adapter *adapter = netdev_priv(netdev); 2545 int index; 2546 int ret; 2547 2548 ret = lan743x_intr_open(adapter); 2549 if (ret) 2550 goto return_error; 2551 2552 ret = lan743x_mac_open(adapter); 2553 if (ret) 2554 goto close_intr; 2555 2556 ret = lan743x_phy_open(adapter); 2557 if (ret) 2558 goto close_mac; 2559 2560 ret = lan743x_ptp_open(adapter); 2561 if (ret) 2562 goto close_phy; 2563 2564 lan743x_rfe_open(adapter); 2565 2566 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2567 ret = lan743x_rx_open(&adapter->rx[index]); 2568 if (ret) 2569 goto close_rx; 2570 } 2571 2572 ret = lan743x_tx_open(&adapter->tx[0]); 2573 if (ret) 2574 goto close_rx; 2575 2576 return 0; 2577 2578 close_rx: 2579 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2580 if (adapter->rx[index].ring_cpu_ptr) 2581 lan743x_rx_close(&adapter->rx[index]); 2582 } 2583 lan743x_ptp_close(adapter); 2584 2585 close_phy: 2586 lan743x_phy_close(adapter); 2587 2588 close_mac: 2589 lan743x_mac_close(adapter); 2590 2591 close_intr: 2592 lan743x_intr_close(adapter); 2593 2594 return_error: 2595 netif_warn(adapter, ifup, adapter->netdev, 2596 "Error opening LAN743x\n"); 2597 return ret; 2598 } 2599 2600 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb, 2601 struct net_device *netdev) 2602 { 2603 struct lan743x_adapter *adapter = netdev_priv(netdev); 2604 2605 return lan743x_tx_xmit_frame(&adapter->tx[0], skb); 2606 } 2607 2608 static int lan743x_netdev_ioctl(struct net_device *netdev, 2609 struct ifreq *ifr, int cmd) 2610 { 2611 if (!netif_running(netdev)) 2612 return -EINVAL; 2613 if (cmd == SIOCSHWTSTAMP) 2614 return lan743x_ptp_ioctl(netdev, ifr, cmd); 2615 return phy_mii_ioctl(netdev->phydev, ifr, cmd); 2616 } 2617 2618 static void lan743x_netdev_set_multicast(struct net_device *netdev) 2619 { 2620 struct lan743x_adapter *adapter = netdev_priv(netdev); 2621 2622 lan743x_rfe_set_multicast(adapter); 2623 } 2624 2625 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu) 2626 { 2627 struct lan743x_adapter *adapter = netdev_priv(netdev); 2628 int ret = 0; 2629 2630 ret = lan743x_mac_set_mtu(adapter, new_mtu); 2631 if (!ret) 2632 netdev->mtu = new_mtu; 2633 return ret; 2634 } 2635 2636 static void lan743x_netdev_get_stats64(struct net_device *netdev, 2637 struct rtnl_link_stats64 *stats) 2638 { 2639 struct lan743x_adapter *adapter = netdev_priv(netdev); 2640 2641 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES); 2642 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES); 2643 stats->rx_bytes = lan743x_csr_read(adapter, 2644 STAT_RX_UNICAST_BYTE_COUNT) + 2645 lan743x_csr_read(adapter, 2646 STAT_RX_BROADCAST_BYTE_COUNT) + 2647 lan743x_csr_read(adapter, 2648 STAT_RX_MULTICAST_BYTE_COUNT); 2649 stats->tx_bytes = lan743x_csr_read(adapter, 2650 STAT_TX_UNICAST_BYTE_COUNT) + 2651 lan743x_csr_read(adapter, 2652 STAT_TX_BROADCAST_BYTE_COUNT) + 2653 lan743x_csr_read(adapter, 2654 STAT_TX_MULTICAST_BYTE_COUNT); 2655 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) + 2656 lan743x_csr_read(adapter, 2657 STAT_RX_ALIGNMENT_ERRORS) + 2658 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) + 2659 lan743x_csr_read(adapter, 2660 STAT_RX_UNDERSIZE_FRAME_ERRORS) + 2661 lan743x_csr_read(adapter, 2662 STAT_RX_OVERSIZE_FRAME_ERRORS); 2663 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) + 2664 lan743x_csr_read(adapter, 2665 STAT_TX_EXCESS_DEFERRAL_ERRORS) + 2666 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS); 2667 stats->rx_dropped = lan743x_csr_read(adapter, 2668 STAT_RX_DROPPED_FRAMES); 2669 stats->tx_dropped = lan743x_csr_read(adapter, 2670 STAT_TX_EXCESSIVE_COLLISION); 2671 stats->multicast = lan743x_csr_read(adapter, 2672 STAT_RX_MULTICAST_FRAMES) + 2673 lan743x_csr_read(adapter, 2674 STAT_TX_MULTICAST_FRAMES); 2675 stats->collisions = lan743x_csr_read(adapter, 2676 STAT_TX_SINGLE_COLLISIONS) + 2677 lan743x_csr_read(adapter, 2678 STAT_TX_MULTIPLE_COLLISIONS) + 2679 lan743x_csr_read(adapter, 2680 STAT_TX_LATE_COLLISIONS); 2681 } 2682 2683 static int lan743x_netdev_set_mac_address(struct net_device *netdev, 2684 void *addr) 2685 { 2686 struct lan743x_adapter *adapter = netdev_priv(netdev); 2687 struct sockaddr *sock_addr = addr; 2688 int ret; 2689 2690 ret = eth_prepare_mac_addr_change(netdev, sock_addr); 2691 if (ret) 2692 return ret; 2693 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data); 2694 lan743x_mac_set_address(adapter, sock_addr->sa_data); 2695 lan743x_rfe_update_mac_address(adapter); 2696 return 0; 2697 } 2698 2699 static const struct net_device_ops lan743x_netdev_ops = { 2700 .ndo_open = lan743x_netdev_open, 2701 .ndo_stop = lan743x_netdev_close, 2702 .ndo_start_xmit = lan743x_netdev_xmit_frame, 2703 .ndo_do_ioctl = lan743x_netdev_ioctl, 2704 .ndo_set_rx_mode = lan743x_netdev_set_multicast, 2705 .ndo_change_mtu = lan743x_netdev_change_mtu, 2706 .ndo_get_stats64 = lan743x_netdev_get_stats64, 2707 .ndo_set_mac_address = lan743x_netdev_set_mac_address, 2708 }; 2709 2710 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter) 2711 { 2712 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2713 } 2714 2715 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter) 2716 { 2717 mdiobus_unregister(adapter->mdiobus); 2718 } 2719 2720 static void lan743x_full_cleanup(struct lan743x_adapter *adapter) 2721 { 2722 unregister_netdev(adapter->netdev); 2723 2724 lan743x_mdiobus_cleanup(adapter); 2725 lan743x_hardware_cleanup(adapter); 2726 lan743x_pci_cleanup(adapter); 2727 } 2728 2729 static int lan743x_hardware_init(struct lan743x_adapter *adapter, 2730 struct pci_dev *pdev) 2731 { 2732 struct lan743x_tx *tx; 2733 int index; 2734 int ret; 2735 2736 adapter->intr.irq = adapter->pdev->irq; 2737 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2738 mutex_init(&adapter->dp_lock); 2739 2740 ret = lan743x_gpio_init(adapter); 2741 if (ret) 2742 return ret; 2743 2744 ret = lan743x_mac_init(adapter); 2745 if (ret) 2746 return ret; 2747 2748 ret = lan743x_phy_init(adapter); 2749 if (ret) 2750 return ret; 2751 2752 ret = lan743x_ptp_init(adapter); 2753 if (ret) 2754 return ret; 2755 2756 lan743x_rfe_update_mac_address(adapter); 2757 2758 ret = lan743x_dmac_init(adapter); 2759 if (ret) 2760 return ret; 2761 2762 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2763 adapter->rx[index].adapter = adapter; 2764 adapter->rx[index].channel_number = index; 2765 } 2766 2767 tx = &adapter->tx[0]; 2768 tx->adapter = adapter; 2769 tx->channel_number = 0; 2770 spin_lock_init(&tx->ring_lock); 2771 return 0; 2772 } 2773 2774 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter) 2775 { 2776 int ret; 2777 2778 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev); 2779 if (!(adapter->mdiobus)) { 2780 ret = -ENOMEM; 2781 goto return_error; 2782 } 2783 2784 adapter->mdiobus->priv = (void *)adapter; 2785 adapter->mdiobus->read = lan743x_mdiobus_read; 2786 adapter->mdiobus->write = lan743x_mdiobus_write; 2787 adapter->mdiobus->name = "lan743x-mdiobus"; 2788 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE, 2789 "pci-%s", pci_name(adapter->pdev)); 2790 2791 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_) 2792 /* LAN7430 uses internal phy at address 1 */ 2793 adapter->mdiobus->phy_mask = ~(u32)BIT(1); 2794 2795 /* register mdiobus */ 2796 ret = mdiobus_register(adapter->mdiobus); 2797 if (ret < 0) 2798 goto return_error; 2799 return 0; 2800 2801 return_error: 2802 return ret; 2803 } 2804 2805 /* lan743x_pcidev_probe - Device Initialization Routine 2806 * @pdev: PCI device information struct 2807 * @id: entry in lan743x_pci_tbl 2808 * 2809 * Returns 0 on success, negative on failure 2810 * 2811 * initializes an adapter identified by a pci_dev structure. 2812 * The OS initialization, configuring of the adapter private structure, 2813 * and a hardware reset occur. 2814 **/ 2815 static int lan743x_pcidev_probe(struct pci_dev *pdev, 2816 const struct pci_device_id *id) 2817 { 2818 struct lan743x_adapter *adapter = NULL; 2819 struct net_device *netdev = NULL; 2820 int ret = -ENODEV; 2821 2822 netdev = devm_alloc_etherdev(&pdev->dev, 2823 sizeof(struct lan743x_adapter)); 2824 if (!netdev) 2825 goto return_error; 2826 2827 SET_NETDEV_DEV(netdev, &pdev->dev); 2828 pci_set_drvdata(pdev, netdev); 2829 adapter = netdev_priv(netdev); 2830 adapter->netdev = netdev; 2831 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE | 2832 NETIF_MSG_LINK | NETIF_MSG_IFUP | 2833 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED; 2834 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE; 2835 2836 ret = lan743x_pci_init(adapter, pdev); 2837 if (ret) 2838 goto return_error; 2839 2840 ret = lan743x_csr_init(adapter); 2841 if (ret) 2842 goto cleanup_pci; 2843 2844 ret = lan743x_hardware_init(adapter, pdev); 2845 if (ret) 2846 goto cleanup_pci; 2847 2848 ret = lan743x_mdiobus_init(adapter); 2849 if (ret) 2850 goto cleanup_hardware; 2851 2852 adapter->netdev->netdev_ops = &lan743x_netdev_ops; 2853 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops; 2854 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM; 2855 adapter->netdev->hw_features = adapter->netdev->features; 2856 2857 /* carrier off reporting is important to ethtool even BEFORE open */ 2858 netif_carrier_off(netdev); 2859 2860 ret = register_netdev(adapter->netdev); 2861 if (ret < 0) 2862 goto cleanup_mdiobus; 2863 return 0; 2864 2865 cleanup_mdiobus: 2866 lan743x_mdiobus_cleanup(adapter); 2867 2868 cleanup_hardware: 2869 lan743x_hardware_cleanup(adapter); 2870 2871 cleanup_pci: 2872 lan743x_pci_cleanup(adapter); 2873 2874 return_error: 2875 pr_warn("Initialization failed\n"); 2876 return ret; 2877 } 2878 2879 /** 2880 * lan743x_pcidev_remove - Device Removal Routine 2881 * @pdev: PCI device information struct 2882 * 2883 * this is called by the PCI subsystem to alert the driver 2884 * that it should release a PCI device. This could be caused by a 2885 * Hot-Plug event, or because the driver is going to be removed from 2886 * memory. 2887 **/ 2888 static void lan743x_pcidev_remove(struct pci_dev *pdev) 2889 { 2890 struct net_device *netdev = pci_get_drvdata(pdev); 2891 struct lan743x_adapter *adapter = netdev_priv(netdev); 2892 2893 lan743x_full_cleanup(adapter); 2894 } 2895 2896 static void lan743x_pcidev_shutdown(struct pci_dev *pdev) 2897 { 2898 struct net_device *netdev = pci_get_drvdata(pdev); 2899 struct lan743x_adapter *adapter = netdev_priv(netdev); 2900 2901 rtnl_lock(); 2902 netif_device_detach(netdev); 2903 2904 /* close netdev when netdev is at running state. 2905 * For instance, it is true when system goes to sleep by pm-suspend 2906 * However, it is false when system goes to sleep by suspend GUI menu 2907 */ 2908 if (netif_running(netdev)) 2909 lan743x_netdev_close(netdev); 2910 rtnl_unlock(); 2911 2912 #ifdef CONFIG_PM 2913 pci_save_state(pdev); 2914 #endif 2915 2916 /* clean up lan743x portion */ 2917 lan743x_hardware_cleanup(adapter); 2918 } 2919 2920 #ifdef CONFIG_PM_SLEEP 2921 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len) 2922 { 2923 return bitrev16(crc16(0xFFFF, buf, len)); 2924 } 2925 2926 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) 2927 { 2928 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; 2929 const u8 ipv6_multicast[3] = { 0x33, 0x33 }; 2930 const u8 arp_type[2] = { 0x08, 0x06 }; 2931 int mask_index; 2932 u32 pmtctl; 2933 u32 wucsr; 2934 u32 macrx; 2935 u16 crc; 2936 2937 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++) 2938 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0); 2939 2940 /* clear wake settings */ 2941 pmtctl = lan743x_csr_read(adapter, PMT_CTL); 2942 pmtctl |= PMT_CTL_WUPS_MASK_; 2943 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | 2944 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | 2945 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); 2946 2947 macrx = lan743x_csr_read(adapter, MAC_RX); 2948 2949 wucsr = 0; 2950 mask_index = 0; 2951 2952 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_; 2953 2954 if (adapter->wolopts & WAKE_PHY) { 2955 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_; 2956 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_; 2957 } 2958 if (adapter->wolopts & WAKE_MAGIC) { 2959 wucsr |= MAC_WUCSR_MPEN_; 2960 macrx |= MAC_RX_RXEN_; 2961 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2962 } 2963 if (adapter->wolopts & WAKE_UCAST) { 2964 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_; 2965 macrx |= MAC_RX_RXEN_; 2966 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2967 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2968 } 2969 if (adapter->wolopts & WAKE_BCAST) { 2970 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_; 2971 macrx |= MAC_RX_RXEN_; 2972 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2973 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2974 } 2975 if (adapter->wolopts & WAKE_MCAST) { 2976 /* IPv4 multicast */ 2977 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3); 2978 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2979 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2980 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2981 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2982 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7); 2983 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2984 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2985 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2986 mask_index++; 2987 2988 /* IPv6 multicast */ 2989 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2); 2990 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2991 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2992 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2993 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2994 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3); 2995 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2996 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2997 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2998 mask_index++; 2999 3000 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 3001 macrx |= MAC_RX_RXEN_; 3002 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 3003 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 3004 } 3005 if (adapter->wolopts & WAKE_ARP) { 3006 /* set MAC_WUF_CFG & WUF_MASK 3007 * for packettype (offset 12,13) = ARP (0x0806) 3008 */ 3009 crc = lan743x_pm_wakeframe_crc16(arp_type, 2); 3010 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 3011 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ | 3012 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 3013 (crc & MAC_WUF_CFG_CRC16_MASK_)); 3014 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000); 3015 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 3016 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 3017 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 3018 mask_index++; 3019 3020 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 3021 macrx |= MAC_RX_RXEN_; 3022 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 3023 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 3024 } 3025 3026 lan743x_csr_write(adapter, MAC_WUCSR, wucsr); 3027 lan743x_csr_write(adapter, PMT_CTL, pmtctl); 3028 lan743x_csr_write(adapter, MAC_RX, macrx); 3029 } 3030 3031 static int lan743x_pm_suspend(struct device *dev) 3032 { 3033 struct pci_dev *pdev = to_pci_dev(dev); 3034 struct net_device *netdev = pci_get_drvdata(pdev); 3035 struct lan743x_adapter *adapter = netdev_priv(netdev); 3036 int ret; 3037 3038 lan743x_pcidev_shutdown(pdev); 3039 3040 /* clear all wakes */ 3041 lan743x_csr_write(adapter, MAC_WUCSR, 0); 3042 lan743x_csr_write(adapter, MAC_WUCSR2, 0); 3043 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF); 3044 3045 if (adapter->wolopts) 3046 lan743x_pm_set_wol(adapter); 3047 3048 /* Host sets PME_En, put D3hot */ 3049 ret = pci_prepare_to_sleep(pdev); 3050 3051 return 0; 3052 } 3053 3054 static int lan743x_pm_resume(struct device *dev) 3055 { 3056 struct pci_dev *pdev = to_pci_dev(dev); 3057 struct net_device *netdev = pci_get_drvdata(pdev); 3058 struct lan743x_adapter *adapter = netdev_priv(netdev); 3059 int ret; 3060 3061 pci_set_power_state(pdev, PCI_D0); 3062 pci_restore_state(pdev); 3063 pci_save_state(pdev); 3064 3065 ret = lan743x_hardware_init(adapter, pdev); 3066 if (ret) { 3067 netif_err(adapter, probe, adapter->netdev, 3068 "lan743x_hardware_init returned %d\n", ret); 3069 } 3070 3071 /* open netdev when netdev is at running state while resume. 3072 * For instance, it is true when system wakesup after pm-suspend 3073 * However, it is false when system wakes up after suspend GUI menu 3074 */ 3075 if (netif_running(netdev)) 3076 lan743x_netdev_open(netdev); 3077 3078 netif_device_attach(netdev); 3079 3080 return 0; 3081 } 3082 3083 static const struct dev_pm_ops lan743x_pm_ops = { 3084 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume) 3085 }; 3086 #endif /* CONFIG_PM_SLEEP */ 3087 3088 static const struct pci_device_id lan743x_pcidev_tbl[] = { 3089 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) }, 3090 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) }, 3091 { 0, } 3092 }; 3093 3094 MODULE_DEVICE_TABLE(pci, lan743x_pcidev_tbl); 3095 3096 static struct pci_driver lan743x_pcidev_driver = { 3097 .name = DRIVER_NAME, 3098 .id_table = lan743x_pcidev_tbl, 3099 .probe = lan743x_pcidev_probe, 3100 .remove = lan743x_pcidev_remove, 3101 #ifdef CONFIG_PM_SLEEP 3102 .driver.pm = &lan743x_pm_ops, 3103 #endif 3104 .shutdown = lan743x_pcidev_shutdown, 3105 }; 3106 3107 module_pci_driver(lan743x_pcidev_driver); 3108 3109 MODULE_AUTHOR(DRIVER_AUTHOR); 3110 MODULE_DESCRIPTION(DRIVER_DESC); 3111 MODULE_LICENSE("GPL"); 3112