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/phy.h> 12 #include <linux/rtnetlink.h> 13 #include <linux/iopoll.h> 14 #include <linux/crc16.h> 15 #include "lan743x_main.h" 16 #include "lan743x_ethtool.h" 17 18 static void lan743x_pci_cleanup(struct lan743x_adapter *adapter) 19 { 20 pci_release_selected_regions(adapter->pdev, 21 pci_select_bars(adapter->pdev, 22 IORESOURCE_MEM)); 23 pci_disable_device(adapter->pdev); 24 } 25 26 static int lan743x_pci_init(struct lan743x_adapter *adapter, 27 struct pci_dev *pdev) 28 { 29 unsigned long bars = 0; 30 int ret; 31 32 adapter->pdev = pdev; 33 ret = pci_enable_device_mem(pdev); 34 if (ret) 35 goto return_error; 36 37 netif_info(adapter, probe, adapter->netdev, 38 "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n", 39 pdev->vendor, pdev->device); 40 bars = pci_select_bars(pdev, IORESOURCE_MEM); 41 if (!test_bit(0, &bars)) 42 goto disable_device; 43 44 ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME); 45 if (ret) 46 goto disable_device; 47 48 pci_set_master(pdev); 49 return 0; 50 51 disable_device: 52 pci_disable_device(adapter->pdev); 53 54 return_error: 55 return ret; 56 } 57 58 u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset) 59 { 60 return ioread32(&adapter->csr.csr_address[offset]); 61 } 62 63 void lan743x_csr_write(struct lan743x_adapter *adapter, int offset, 64 u32 data) 65 { 66 iowrite32(data, &adapter->csr.csr_address[offset]); 67 } 68 69 #define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset) 70 71 static int lan743x_csr_light_reset(struct lan743x_adapter *adapter) 72 { 73 u32 data; 74 75 data = lan743x_csr_read(adapter, HW_CFG); 76 data |= HW_CFG_LRST_; 77 lan743x_csr_write(adapter, HW_CFG, data); 78 79 return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data, 80 !(data & HW_CFG_LRST_), 100000, 10000000); 81 } 82 83 static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter, 84 int offset, u32 bit_mask, 85 int target_value, int usleep_min, 86 int usleep_max, int count) 87 { 88 u32 data; 89 90 return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data, 91 target_value == ((data & bit_mask) ? 1 : 0), 92 usleep_max, usleep_min * count); 93 } 94 95 static int lan743x_csr_init(struct lan743x_adapter *adapter) 96 { 97 struct lan743x_csr *csr = &adapter->csr; 98 resource_size_t bar_start, bar_length; 99 int result; 100 101 bar_start = pci_resource_start(adapter->pdev, 0); 102 bar_length = pci_resource_len(adapter->pdev, 0); 103 csr->csr_address = devm_ioremap(&adapter->pdev->dev, 104 bar_start, bar_length); 105 if (!csr->csr_address) { 106 result = -ENOMEM; 107 goto clean_up; 108 } 109 110 csr->id_rev = lan743x_csr_read(adapter, ID_REV); 111 csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV); 112 netif_info(adapter, probe, adapter->netdev, 113 "ID_REV = 0x%08X, FPGA_REV = %d.%d\n", 114 csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev), 115 FPGA_REV_GET_MINOR_(csr->fpga_rev)); 116 if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) { 117 result = -ENODEV; 118 goto clean_up; 119 } 120 121 csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR; 122 switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) { 123 case ID_REV_CHIP_REV_A0_: 124 csr->flags |= LAN743X_CSR_FLAG_IS_A0; 125 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR; 126 break; 127 case ID_REV_CHIP_REV_B0_: 128 csr->flags |= LAN743X_CSR_FLAG_IS_B0; 129 break; 130 } 131 132 result = lan743x_csr_light_reset(adapter); 133 if (result) 134 goto clean_up; 135 return 0; 136 clean_up: 137 return result; 138 } 139 140 static void lan743x_intr_software_isr(void *context) 141 { 142 struct lan743x_adapter *adapter = context; 143 struct lan743x_intr *intr = &adapter->intr; 144 u32 int_sts; 145 146 int_sts = lan743x_csr_read(adapter, INT_STS); 147 if (int_sts & INT_BIT_SW_GP_) { 148 lan743x_csr_write(adapter, INT_STS, INT_BIT_SW_GP_); 149 intr->software_isr_flag = 1; 150 } 151 } 152 153 static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags) 154 { 155 struct lan743x_tx *tx = context; 156 struct lan743x_adapter *adapter = tx->adapter; 157 bool enable_flag = true; 158 u32 int_en = 0; 159 160 int_en = lan743x_csr_read(adapter, INT_EN_SET); 161 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) { 162 lan743x_csr_write(adapter, INT_EN_CLR, 163 INT_BIT_DMA_TX_(tx->channel_number)); 164 } 165 166 if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) { 167 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 168 u32 dmac_int_sts; 169 u32 dmac_int_en; 170 171 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) 172 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 173 else 174 dmac_int_sts = ioc_bit; 175 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) 176 dmac_int_en = lan743x_csr_read(adapter, 177 DMAC_INT_EN_SET); 178 else 179 dmac_int_en = ioc_bit; 180 181 dmac_int_en &= ioc_bit; 182 dmac_int_sts &= dmac_int_en; 183 if (dmac_int_sts & ioc_bit) { 184 napi_schedule(&tx->napi); 185 enable_flag = false;/* poll func will enable later */ 186 } 187 } 188 189 if (enable_flag) 190 /* enable isr */ 191 lan743x_csr_write(adapter, INT_EN_SET, 192 INT_BIT_DMA_TX_(tx->channel_number)); 193 } 194 195 static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags) 196 { 197 struct lan743x_rx *rx = context; 198 struct lan743x_adapter *adapter = rx->adapter; 199 bool enable_flag = true; 200 201 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) { 202 lan743x_csr_write(adapter, INT_EN_CLR, 203 INT_BIT_DMA_RX_(rx->channel_number)); 204 } 205 206 if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) { 207 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number); 208 u32 dmac_int_sts; 209 u32 dmac_int_en; 210 211 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) 212 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 213 else 214 dmac_int_sts = rx_frame_bit; 215 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) 216 dmac_int_en = lan743x_csr_read(adapter, 217 DMAC_INT_EN_SET); 218 else 219 dmac_int_en = rx_frame_bit; 220 221 dmac_int_en &= rx_frame_bit; 222 dmac_int_sts &= dmac_int_en; 223 if (dmac_int_sts & rx_frame_bit) { 224 napi_schedule(&rx->napi); 225 enable_flag = false;/* poll funct will enable later */ 226 } 227 } 228 229 if (enable_flag) { 230 /* enable isr */ 231 lan743x_csr_write(adapter, INT_EN_SET, 232 INT_BIT_DMA_RX_(rx->channel_number)); 233 } 234 } 235 236 static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags) 237 { 238 struct lan743x_adapter *adapter = context; 239 unsigned int channel; 240 241 if (int_sts & INT_BIT_ALL_RX_) { 242 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS; 243 channel++) { 244 u32 int_bit = INT_BIT_DMA_RX_(channel); 245 246 if (int_sts & int_bit) { 247 lan743x_rx_isr(&adapter->rx[channel], 248 int_bit, flags); 249 int_sts &= ~int_bit; 250 } 251 } 252 } 253 if (int_sts & INT_BIT_ALL_TX_) { 254 for (channel = 0; channel < LAN743X_USED_TX_CHANNELS; 255 channel++) { 256 u32 int_bit = INT_BIT_DMA_TX_(channel); 257 258 if (int_sts & int_bit) { 259 lan743x_tx_isr(&adapter->tx[channel], 260 int_bit, flags); 261 int_sts &= ~int_bit; 262 } 263 } 264 } 265 if (int_sts & INT_BIT_ALL_OTHER_) { 266 if (int_sts & INT_BIT_SW_GP_) { 267 lan743x_intr_software_isr(adapter); 268 int_sts &= ~INT_BIT_SW_GP_; 269 } 270 if (int_sts & INT_BIT_1588_) { 271 lan743x_ptp_isr(adapter); 272 int_sts &= ~INT_BIT_1588_; 273 } 274 } 275 if (int_sts) 276 lan743x_csr_write(adapter, INT_EN_CLR, int_sts); 277 } 278 279 static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr) 280 { 281 struct lan743x_vector *vector = ptr; 282 struct lan743x_adapter *adapter = vector->adapter; 283 irqreturn_t result = IRQ_NONE; 284 u32 int_enables; 285 u32 int_sts; 286 287 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) { 288 int_sts = lan743x_csr_read(adapter, INT_STS); 289 } else if (vector->flags & 290 (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C | 291 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) { 292 int_sts = lan743x_csr_read(adapter, INT_STS_R2C); 293 } else { 294 /* use mask as implied status */ 295 int_sts = vector->int_mask | INT_BIT_MAS_; 296 } 297 298 if (!(int_sts & INT_BIT_MAS_)) 299 goto irq_done; 300 301 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR) 302 /* disable vector interrupt */ 303 lan743x_csr_write(adapter, 304 INT_VEC_EN_CLR, 305 INT_VEC_EN_(vector->vector_index)); 306 307 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR) 308 /* disable master interrupt */ 309 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_); 310 311 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) { 312 int_enables = lan743x_csr_read(adapter, INT_EN_SET); 313 } else { 314 /* use vector mask as implied enable mask */ 315 int_enables = vector->int_mask; 316 } 317 318 int_sts &= int_enables; 319 int_sts &= vector->int_mask; 320 if (int_sts) { 321 if (vector->handler) { 322 vector->handler(vector->context, 323 int_sts, vector->flags); 324 } else { 325 /* disable interrupts on this vector */ 326 lan743x_csr_write(adapter, INT_EN_CLR, 327 vector->int_mask); 328 } 329 result = IRQ_HANDLED; 330 } 331 332 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET) 333 /* enable master interrupt */ 334 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_); 335 336 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET) 337 /* enable vector interrupt */ 338 lan743x_csr_write(adapter, 339 INT_VEC_EN_SET, 340 INT_VEC_EN_(vector->vector_index)); 341 irq_done: 342 return result; 343 } 344 345 static int lan743x_intr_test_isr(struct lan743x_adapter *adapter) 346 { 347 struct lan743x_intr *intr = &adapter->intr; 348 int result = -ENODEV; 349 int timeout = 10; 350 351 intr->software_isr_flag = 0; 352 353 /* enable interrupt */ 354 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_); 355 356 /* activate interrupt here */ 357 lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_); 358 while ((timeout > 0) && (!(intr->software_isr_flag))) { 359 usleep_range(1000, 20000); 360 timeout--; 361 } 362 363 if (intr->software_isr_flag) 364 result = 0; 365 366 /* disable interrupts */ 367 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_); 368 return result; 369 } 370 371 static int lan743x_intr_register_isr(struct lan743x_adapter *adapter, 372 int vector_index, u32 flags, 373 u32 int_mask, 374 lan743x_vector_handler handler, 375 void *context) 376 { 377 struct lan743x_vector *vector = &adapter->intr.vector_list 378 [vector_index]; 379 int ret; 380 381 vector->adapter = adapter; 382 vector->flags = flags; 383 vector->vector_index = vector_index; 384 vector->int_mask = int_mask; 385 vector->handler = handler; 386 vector->context = context; 387 388 ret = request_irq(vector->irq, 389 lan743x_intr_entry_isr, 390 (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ? 391 IRQF_SHARED : 0, DRIVER_NAME, vector); 392 if (ret) { 393 vector->handler = NULL; 394 vector->context = NULL; 395 vector->int_mask = 0; 396 vector->flags = 0; 397 } 398 return ret; 399 } 400 401 static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter, 402 int vector_index) 403 { 404 struct lan743x_vector *vector = &adapter->intr.vector_list 405 [vector_index]; 406 407 free_irq(vector->irq, vector); 408 vector->handler = NULL; 409 vector->context = NULL; 410 vector->int_mask = 0; 411 vector->flags = 0; 412 } 413 414 static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter, 415 u32 int_mask) 416 { 417 int index; 418 419 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) { 420 if (adapter->intr.vector_list[index].int_mask & int_mask) 421 return adapter->intr.vector_list[index].flags; 422 } 423 return 0; 424 } 425 426 static void lan743x_intr_close(struct lan743x_adapter *adapter) 427 { 428 struct lan743x_intr *intr = &adapter->intr; 429 int index = 0; 430 431 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_); 432 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF); 433 434 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) { 435 if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) { 436 lan743x_intr_unregister_isr(adapter, index); 437 intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index); 438 } 439 } 440 441 if (intr->flags & INTR_FLAG_MSI_ENABLED) { 442 pci_disable_msi(adapter->pdev); 443 intr->flags &= ~INTR_FLAG_MSI_ENABLED; 444 } 445 446 if (intr->flags & INTR_FLAG_MSIX_ENABLED) { 447 pci_disable_msix(adapter->pdev); 448 intr->flags &= ~INTR_FLAG_MSIX_ENABLED; 449 } 450 } 451 452 static int lan743x_intr_open(struct lan743x_adapter *adapter) 453 { 454 struct msix_entry msix_entries[LAN743X_MAX_VECTOR_COUNT]; 455 struct lan743x_intr *intr = &adapter->intr; 456 u32 int_vec_en_auto_clr = 0; 457 u32 int_vec_map0 = 0; 458 u32 int_vec_map1 = 0; 459 int ret = -ENODEV; 460 int index = 0; 461 u32 flags = 0; 462 463 intr->number_of_vectors = 0; 464 465 /* Try to set up MSIX interrupts */ 466 memset(&msix_entries[0], 0, 467 sizeof(struct msix_entry) * LAN743X_MAX_VECTOR_COUNT); 468 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) 469 msix_entries[index].entry = index; 470 ret = pci_enable_msix_range(adapter->pdev, 471 msix_entries, 1, 472 1 + LAN743X_USED_TX_CHANNELS + 473 LAN743X_USED_RX_CHANNELS); 474 475 if (ret > 0) { 476 intr->flags |= INTR_FLAG_MSIX_ENABLED; 477 intr->number_of_vectors = ret; 478 intr->using_vectors = true; 479 for (index = 0; index < intr->number_of_vectors; index++) 480 intr->vector_list[index].irq = msix_entries 481 [index].vector; 482 netif_info(adapter, ifup, adapter->netdev, 483 "using MSIX interrupts, number of vectors = %d\n", 484 intr->number_of_vectors); 485 } 486 487 /* If MSIX failed try to setup using MSI interrupts */ 488 if (!intr->number_of_vectors) { 489 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 490 if (!pci_enable_msi(adapter->pdev)) { 491 intr->flags |= INTR_FLAG_MSI_ENABLED; 492 intr->number_of_vectors = 1; 493 intr->using_vectors = true; 494 intr->vector_list[0].irq = 495 adapter->pdev->irq; 496 netif_info(adapter, ifup, adapter->netdev, 497 "using MSI interrupts, number of vectors = %d\n", 498 intr->number_of_vectors); 499 } 500 } 501 } 502 503 /* If MSIX, and MSI failed, setup using legacy interrupt */ 504 if (!intr->number_of_vectors) { 505 intr->number_of_vectors = 1; 506 intr->using_vectors = false; 507 intr->vector_list[0].irq = intr->irq; 508 netif_info(adapter, ifup, adapter->netdev, 509 "using legacy interrupts\n"); 510 } 511 512 /* At this point we must have at least one irq */ 513 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF); 514 515 /* map all interrupts to vector 0 */ 516 lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000); 517 lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000); 518 lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000); 519 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 520 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 521 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 522 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR; 523 524 if (intr->using_vectors) { 525 flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 526 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 527 } else { 528 flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR | 529 LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET | 530 LAN743X_VECTOR_FLAG_IRQ_SHARED; 531 } 532 533 if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 534 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ; 535 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C; 536 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR; 537 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK; 538 flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C; 539 flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C; 540 } 541 542 ret = lan743x_intr_register_isr(adapter, 0, flags, 543 INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ | 544 INT_BIT_ALL_OTHER_, 545 lan743x_intr_shared_isr, adapter); 546 if (ret) 547 goto clean_up; 548 intr->flags |= INTR_FLAG_IRQ_REQUESTED(0); 549 550 if (intr->using_vectors) 551 lan743x_csr_write(adapter, INT_VEC_EN_SET, 552 INT_VEC_EN_(0)); 553 554 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 555 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD); 556 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD); 557 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD); 558 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD); 559 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD); 560 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD); 561 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD); 562 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD); 563 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432); 564 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001); 565 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF); 566 } 567 568 /* enable interrupts */ 569 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_); 570 ret = lan743x_intr_test_isr(adapter); 571 if (ret) 572 goto clean_up; 573 574 if (intr->number_of_vectors > 1) { 575 int number_of_tx_vectors = intr->number_of_vectors - 1; 576 577 if (number_of_tx_vectors > LAN743X_USED_TX_CHANNELS) 578 number_of_tx_vectors = LAN743X_USED_TX_CHANNELS; 579 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 580 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 581 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 582 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR | 583 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 584 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 585 586 if (adapter->csr.flags & 587 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 588 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 589 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 590 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 591 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 592 } 593 594 for (index = 0; index < number_of_tx_vectors; index++) { 595 u32 int_bit = INT_BIT_DMA_TX_(index); 596 int vector = index + 1; 597 598 /* map TX interrupt to vector */ 599 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector); 600 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1); 601 602 /* Remove TX interrupt from shared mask */ 603 intr->vector_list[0].int_mask &= ~int_bit; 604 ret = lan743x_intr_register_isr(adapter, vector, flags, 605 int_bit, lan743x_tx_isr, 606 &adapter->tx[index]); 607 if (ret) 608 goto clean_up; 609 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 610 if (!(flags & 611 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)) 612 lan743x_csr_write(adapter, INT_VEC_EN_SET, 613 INT_VEC_EN_(vector)); 614 } 615 } 616 if ((intr->number_of_vectors - LAN743X_USED_TX_CHANNELS) > 1) { 617 int number_of_rx_vectors = intr->number_of_vectors - 618 LAN743X_USED_TX_CHANNELS - 1; 619 620 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS) 621 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS; 622 623 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 624 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 625 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 626 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR | 627 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 628 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 629 630 if (adapter->csr.flags & 631 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 632 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR | 633 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 634 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 635 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 636 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 637 } 638 for (index = 0; index < number_of_rx_vectors; index++) { 639 int vector = index + 1 + LAN743X_USED_TX_CHANNELS; 640 u32 int_bit = INT_BIT_DMA_RX_(index); 641 642 /* map RX interrupt to vector */ 643 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector); 644 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0); 645 if (flags & 646 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) { 647 int_vec_en_auto_clr |= INT_VEC_EN_(vector); 648 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR, 649 int_vec_en_auto_clr); 650 } 651 652 /* Remove RX interrupt from shared mask */ 653 intr->vector_list[0].int_mask &= ~int_bit; 654 ret = lan743x_intr_register_isr(adapter, vector, flags, 655 int_bit, lan743x_rx_isr, 656 &adapter->rx[index]); 657 if (ret) 658 goto clean_up; 659 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 660 661 lan743x_csr_write(adapter, INT_VEC_EN_SET, 662 INT_VEC_EN_(vector)); 663 } 664 } 665 return 0; 666 667 clean_up: 668 lan743x_intr_close(adapter); 669 return ret; 670 } 671 672 static int lan743x_dp_write(struct lan743x_adapter *adapter, 673 u32 select, u32 addr, u32 length, u32 *buf) 674 { 675 int ret = -EIO; 676 u32 dp_sel; 677 int i; 678 679 mutex_lock(&adapter->dp_lock); 680 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_, 681 1, 40, 100, 100)) 682 goto unlock; 683 dp_sel = lan743x_csr_read(adapter, DP_SEL); 684 dp_sel &= ~DP_SEL_MASK_; 685 dp_sel |= select; 686 lan743x_csr_write(adapter, DP_SEL, dp_sel); 687 688 for (i = 0; i < length; i++) { 689 lan743x_csr_write(adapter, DP_ADDR, addr + i); 690 lan743x_csr_write(adapter, DP_DATA_0, buf[i]); 691 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_); 692 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_, 693 1, 40, 100, 100)) 694 goto unlock; 695 } 696 ret = 0; 697 698 unlock: 699 mutex_unlock(&adapter->dp_lock); 700 return ret; 701 } 702 703 static u32 lan743x_mac_mii_access(u16 id, u16 index, int read) 704 { 705 u32 ret; 706 707 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) & 708 MAC_MII_ACC_PHY_ADDR_MASK_; 709 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) & 710 MAC_MII_ACC_MIIRINDA_MASK_; 711 712 if (read) 713 ret |= MAC_MII_ACC_MII_READ_; 714 else 715 ret |= MAC_MII_ACC_MII_WRITE_; 716 ret |= MAC_MII_ACC_MII_BUSY_; 717 718 return ret; 719 } 720 721 static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter) 722 { 723 u32 data; 724 725 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data, 726 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000); 727 } 728 729 static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index) 730 { 731 struct lan743x_adapter *adapter = bus->priv; 732 u32 val, mii_access; 733 int ret; 734 735 /* comfirm MII not busy */ 736 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 737 if (ret < 0) 738 return ret; 739 740 /* set the address, index & direction (read from PHY) */ 741 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ); 742 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 743 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 744 if (ret < 0) 745 return ret; 746 747 val = lan743x_csr_read(adapter, MAC_MII_DATA); 748 return (int)(val & 0xFFFF); 749 } 750 751 static int lan743x_mdiobus_write(struct mii_bus *bus, 752 int phy_id, int index, u16 regval) 753 { 754 struct lan743x_adapter *adapter = bus->priv; 755 u32 val, mii_access; 756 int ret; 757 758 /* confirm MII not busy */ 759 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 760 if (ret < 0) 761 return ret; 762 val = (u32)regval; 763 lan743x_csr_write(adapter, MAC_MII_DATA, val); 764 765 /* set the address, index & direction (write to PHY) */ 766 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE); 767 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 768 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 769 return ret; 770 } 771 772 static void lan743x_mac_set_address(struct lan743x_adapter *adapter, 773 u8 *addr) 774 { 775 u32 addr_lo, addr_hi; 776 777 addr_lo = addr[0] | 778 addr[1] << 8 | 779 addr[2] << 16 | 780 addr[3] << 24; 781 addr_hi = addr[4] | 782 addr[5] << 8; 783 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo); 784 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi); 785 786 ether_addr_copy(adapter->mac_address, addr); 787 netif_info(adapter, drv, adapter->netdev, 788 "MAC address set to %pM\n", addr); 789 } 790 791 static int lan743x_mac_init(struct lan743x_adapter *adapter) 792 { 793 bool mac_address_valid = true; 794 struct net_device *netdev; 795 u32 mac_addr_hi = 0; 796 u32 mac_addr_lo = 0; 797 u32 data; 798 799 netdev = adapter->netdev; 800 801 /* setup auto duplex, and speed detection */ 802 data = lan743x_csr_read(adapter, MAC_CR); 803 data |= MAC_CR_ADD_ | MAC_CR_ASD_; 804 data |= MAC_CR_CNTR_RST_; 805 lan743x_csr_write(adapter, MAC_CR, data); 806 807 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH); 808 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL); 809 adapter->mac_address[0] = mac_addr_lo & 0xFF; 810 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF; 811 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF; 812 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF; 813 adapter->mac_address[4] = mac_addr_hi & 0xFF; 814 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF; 815 816 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) && 817 mac_addr_lo == 0xFFFFFFFF) { 818 mac_address_valid = false; 819 } else if (!is_valid_ether_addr(adapter->mac_address)) { 820 mac_address_valid = false; 821 } 822 823 if (!mac_address_valid) 824 eth_random_addr(adapter->mac_address); 825 lan743x_mac_set_address(adapter, adapter->mac_address); 826 ether_addr_copy(netdev->dev_addr, adapter->mac_address); 827 return 0; 828 } 829 830 static int lan743x_mac_open(struct lan743x_adapter *adapter) 831 { 832 int ret = 0; 833 u32 temp; 834 835 temp = lan743x_csr_read(adapter, MAC_RX); 836 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_); 837 temp = lan743x_csr_read(adapter, MAC_TX); 838 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_); 839 return ret; 840 } 841 842 static void lan743x_mac_close(struct lan743x_adapter *adapter) 843 { 844 u32 temp; 845 846 temp = lan743x_csr_read(adapter, MAC_TX); 847 temp &= ~MAC_TX_TXEN_; 848 lan743x_csr_write(adapter, MAC_TX, temp); 849 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_, 850 1, 1000, 20000, 100); 851 852 temp = lan743x_csr_read(adapter, MAC_RX); 853 temp &= ~MAC_RX_RXEN_; 854 lan743x_csr_write(adapter, MAC_RX, temp); 855 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 856 1, 1000, 20000, 100); 857 } 858 859 static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter, 860 bool tx_enable, bool rx_enable) 861 { 862 u32 flow_setting = 0; 863 864 /* set maximum pause time because when fifo space frees 865 * up a zero value pause frame will be sent to release the pause 866 */ 867 flow_setting = MAC_FLOW_CR_FCPT_MASK_; 868 if (tx_enable) 869 flow_setting |= MAC_FLOW_CR_TX_FCEN_; 870 if (rx_enable) 871 flow_setting |= MAC_FLOW_CR_RX_FCEN_; 872 lan743x_csr_write(adapter, MAC_FLOW, flow_setting); 873 } 874 875 static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu) 876 { 877 int enabled = 0; 878 u32 mac_rx = 0; 879 880 mac_rx = lan743x_csr_read(adapter, MAC_RX); 881 if (mac_rx & MAC_RX_RXEN_) { 882 enabled = 1; 883 if (mac_rx & MAC_RX_RXD_) { 884 lan743x_csr_write(adapter, MAC_RX, mac_rx); 885 mac_rx &= ~MAC_RX_RXD_; 886 } 887 mac_rx &= ~MAC_RX_RXEN_; 888 lan743x_csr_write(adapter, MAC_RX, mac_rx); 889 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 890 1, 1000, 20000, 100); 891 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_); 892 } 893 894 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_); 895 mac_rx |= (((new_mtu + ETH_HLEN + 4) << MAC_RX_MAX_SIZE_SHIFT_) & 896 MAC_RX_MAX_SIZE_MASK_); 897 lan743x_csr_write(adapter, MAC_RX, mac_rx); 898 899 if (enabled) { 900 mac_rx |= MAC_RX_RXEN_; 901 lan743x_csr_write(adapter, MAC_RX, mac_rx); 902 } 903 return 0; 904 } 905 906 /* PHY */ 907 static int lan743x_phy_reset(struct lan743x_adapter *adapter) 908 { 909 u32 data; 910 911 /* Only called with in probe, and before mdiobus_register */ 912 913 data = lan743x_csr_read(adapter, PMT_CTL); 914 data |= PMT_CTL_ETH_PHY_RST_; 915 lan743x_csr_write(adapter, PMT_CTL, data); 916 917 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data, 918 (!(data & PMT_CTL_ETH_PHY_RST_) && 919 (data & PMT_CTL_READY_)), 920 50000, 1000000); 921 } 922 923 static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter, 924 u8 duplex, u16 local_adv, 925 u16 remote_adv) 926 { 927 struct lan743x_phy *phy = &adapter->phy; 928 u8 cap; 929 930 if (phy->fc_autoneg) 931 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv); 932 else 933 cap = phy->fc_request_control; 934 935 lan743x_mac_flow_ctrl_set_enables(adapter, 936 cap & FLOW_CTRL_TX, 937 cap & FLOW_CTRL_RX); 938 } 939 940 static int lan743x_phy_init(struct lan743x_adapter *adapter) 941 { 942 return lan743x_phy_reset(adapter); 943 } 944 945 static void lan743x_phy_link_status_change(struct net_device *netdev) 946 { 947 struct lan743x_adapter *adapter = netdev_priv(netdev); 948 struct phy_device *phydev = netdev->phydev; 949 950 phy_print_status(phydev); 951 if (phydev->state == PHY_RUNNING) { 952 struct ethtool_link_ksettings ksettings; 953 int remote_advertisement = 0; 954 int local_advertisement = 0; 955 956 memset(&ksettings, 0, sizeof(ksettings)); 957 phy_ethtool_get_link_ksettings(netdev, &ksettings); 958 local_advertisement = 959 linkmode_adv_to_mii_adv_t(phydev->advertising); 960 remote_advertisement = 961 linkmode_adv_to_mii_adv_t(phydev->lp_advertising); 962 963 lan743x_phy_update_flowcontrol(adapter, 964 ksettings.base.duplex, 965 local_advertisement, 966 remote_advertisement); 967 lan743x_ptp_update_latency(adapter, ksettings.base.speed); 968 } 969 } 970 971 static void lan743x_phy_close(struct lan743x_adapter *adapter) 972 { 973 struct net_device *netdev = adapter->netdev; 974 975 phy_stop(netdev->phydev); 976 phy_disconnect(netdev->phydev); 977 netdev->phydev = NULL; 978 } 979 980 static int lan743x_phy_open(struct lan743x_adapter *adapter) 981 { 982 struct lan743x_phy *phy = &adapter->phy; 983 struct phy_device *phydev; 984 struct net_device *netdev; 985 int ret = -EIO; 986 987 netdev = adapter->netdev; 988 phydev = phy_find_first(adapter->mdiobus); 989 if (!phydev) 990 goto return_error; 991 992 ret = phy_connect_direct(netdev, phydev, 993 lan743x_phy_link_status_change, 994 PHY_INTERFACE_MODE_GMII); 995 if (ret) 996 goto return_error; 997 998 /* MAC doesn't support 1000T Half */ 999 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); 1000 1001 /* support both flow controls */ 1002 phy_support_asym_pause(phydev); 1003 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); 1004 phy->fc_autoneg = phydev->autoneg; 1005 1006 phy_start(phydev); 1007 phy_start_aneg(phydev); 1008 return 0; 1009 1010 return_error: 1011 return ret; 1012 } 1013 1014 static void lan743x_rfe_open(struct lan743x_adapter *adapter) 1015 { 1016 lan743x_csr_write(adapter, RFE_RSS_CFG, 1017 RFE_RSS_CFG_UDP_IPV6_EX_ | 1018 RFE_RSS_CFG_TCP_IPV6_EX_ | 1019 RFE_RSS_CFG_IPV6_EX_ | 1020 RFE_RSS_CFG_UDP_IPV6_ | 1021 RFE_RSS_CFG_TCP_IPV6_ | 1022 RFE_RSS_CFG_IPV6_ | 1023 RFE_RSS_CFG_UDP_IPV4_ | 1024 RFE_RSS_CFG_TCP_IPV4_ | 1025 RFE_RSS_CFG_IPV4_ | 1026 RFE_RSS_CFG_VALID_HASH_BITS_ | 1027 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ | 1028 RFE_RSS_CFG_RSS_HASH_STORE_ | 1029 RFE_RSS_CFG_RSS_ENABLE_); 1030 } 1031 1032 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter) 1033 { 1034 u8 *mac_addr; 1035 u32 mac_addr_hi = 0; 1036 u32 mac_addr_lo = 0; 1037 1038 /* Add mac address to perfect Filter */ 1039 mac_addr = adapter->mac_address; 1040 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) | 1041 (((u32)(mac_addr[1])) << 8) | 1042 (((u32)(mac_addr[2])) << 16) | 1043 (((u32)(mac_addr[3])) << 24)); 1044 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) | 1045 (((u32)(mac_addr[5])) << 8)); 1046 1047 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo); 1048 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0), 1049 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_); 1050 } 1051 1052 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter) 1053 { 1054 struct net_device *netdev = adapter->netdev; 1055 u32 hash_table[DP_SEL_VHF_HASH_LEN]; 1056 u32 rfctl; 1057 u32 data; 1058 1059 rfctl = lan743x_csr_read(adapter, RFE_CTL); 1060 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ | 1061 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); 1062 rfctl |= RFE_CTL_AB_; 1063 if (netdev->flags & IFF_PROMISC) { 1064 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_; 1065 } else { 1066 if (netdev->flags & IFF_ALLMULTI) 1067 rfctl |= RFE_CTL_AM_; 1068 } 1069 1070 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32)); 1071 if (netdev_mc_count(netdev)) { 1072 struct netdev_hw_addr *ha; 1073 int i; 1074 1075 rfctl |= RFE_CTL_DA_PERFECT_; 1076 i = 1; 1077 netdev_for_each_mc_addr(ha, netdev) { 1078 /* set first 32 into Perfect Filter */ 1079 if (i < 33) { 1080 lan743x_csr_write(adapter, 1081 RFE_ADDR_FILT_HI(i), 0); 1082 data = ha->addr[3]; 1083 data = ha->addr[2] | (data << 8); 1084 data = ha->addr[1] | (data << 8); 1085 data = ha->addr[0] | (data << 8); 1086 lan743x_csr_write(adapter, 1087 RFE_ADDR_FILT_LO(i), data); 1088 data = ha->addr[5]; 1089 data = ha->addr[4] | (data << 8); 1090 data |= RFE_ADDR_FILT_HI_VALID_; 1091 lan743x_csr_write(adapter, 1092 RFE_ADDR_FILT_HI(i), data); 1093 } else { 1094 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >> 1095 23) & 0x1FF; 1096 hash_table[bitnum / 32] |= (1 << (bitnum % 32)); 1097 rfctl |= RFE_CTL_MCAST_HASH_; 1098 } 1099 i++; 1100 } 1101 } 1102 1103 lan743x_dp_write(adapter, DP_SEL_RFE_RAM, 1104 DP_SEL_VHF_VLAN_LEN, 1105 DP_SEL_VHF_HASH_LEN, hash_table); 1106 lan743x_csr_write(adapter, RFE_CTL, rfctl); 1107 } 1108 1109 static int lan743x_dmac_init(struct lan743x_adapter *adapter) 1110 { 1111 u32 data = 0; 1112 1113 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_); 1114 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_, 1115 0, 1000, 20000, 100); 1116 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) { 1117 case DMA_DESCRIPTOR_SPACING_16: 1118 data = DMAC_CFG_MAX_DSPACE_16_; 1119 break; 1120 case DMA_DESCRIPTOR_SPACING_32: 1121 data = DMAC_CFG_MAX_DSPACE_32_; 1122 break; 1123 case DMA_DESCRIPTOR_SPACING_64: 1124 data = DMAC_CFG_MAX_DSPACE_64_; 1125 break; 1126 case DMA_DESCRIPTOR_SPACING_128: 1127 data = DMAC_CFG_MAX_DSPACE_128_; 1128 break; 1129 default: 1130 return -EPERM; 1131 } 1132 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1133 data |= DMAC_CFG_COAL_EN_; 1134 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_; 1135 data |= DMAC_CFG_MAX_READ_REQ_SET_(6); 1136 lan743x_csr_write(adapter, DMAC_CFG, data); 1137 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1); 1138 data |= DMAC_COAL_CFG_TIMER_TX_START_; 1139 data |= DMAC_COAL_CFG_FLUSH_INTS_; 1140 data |= DMAC_COAL_CFG_INT_EXIT_COAL_; 1141 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_; 1142 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A); 1143 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C); 1144 lan743x_csr_write(adapter, DMAC_COAL_CFG, data); 1145 data = DMAC_OBFF_TX_THRES_SET_(0x08); 1146 data |= DMAC_OBFF_RX_THRES_SET_(0x0A); 1147 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data); 1148 return 0; 1149 } 1150 1151 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter, 1152 int tx_channel) 1153 { 1154 u32 dmac_cmd = 0; 1155 1156 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1157 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1158 DMAC_CMD_START_T_(tx_channel)), 1159 (dmac_cmd & 1160 DMAC_CMD_STOP_T_(tx_channel))); 1161 } 1162 1163 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter, 1164 int tx_channel) 1165 { 1166 int timeout = 100; 1167 int result = 0; 1168 1169 while (timeout && 1170 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) == 1171 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1172 usleep_range(1000, 20000); 1173 timeout--; 1174 } 1175 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1176 result = -ENODEV; 1177 return result; 1178 } 1179 1180 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter, 1181 int rx_channel) 1182 { 1183 u32 dmac_cmd = 0; 1184 1185 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1186 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1187 DMAC_CMD_START_R_(rx_channel)), 1188 (dmac_cmd & 1189 DMAC_CMD_STOP_R_(rx_channel))); 1190 } 1191 1192 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter, 1193 int rx_channel) 1194 { 1195 int timeout = 100; 1196 int result = 0; 1197 1198 while (timeout && 1199 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) == 1200 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1201 usleep_range(1000, 20000); 1202 timeout--; 1203 } 1204 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1205 result = -ENODEV; 1206 return result; 1207 } 1208 1209 static void lan743x_tx_release_desc(struct lan743x_tx *tx, 1210 int descriptor_index, bool cleanup) 1211 { 1212 struct lan743x_tx_buffer_info *buffer_info = NULL; 1213 struct lan743x_tx_descriptor *descriptor = NULL; 1214 u32 descriptor_type = 0; 1215 bool ignore_sync; 1216 1217 descriptor = &tx->ring_cpu_ptr[descriptor_index]; 1218 buffer_info = &tx->buffer_info[descriptor_index]; 1219 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE)) 1220 goto done; 1221 1222 descriptor_type = (descriptor->data0) & 1223 TX_DESC_DATA0_DTYPE_MASK_; 1224 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_) 1225 goto clean_up_data_descriptor; 1226 else 1227 goto clear_active; 1228 1229 clean_up_data_descriptor: 1230 if (buffer_info->dma_ptr) { 1231 if (buffer_info->flags & 1232 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) { 1233 dma_unmap_page(&tx->adapter->pdev->dev, 1234 buffer_info->dma_ptr, 1235 buffer_info->buffer_length, 1236 DMA_TO_DEVICE); 1237 } else { 1238 dma_unmap_single(&tx->adapter->pdev->dev, 1239 buffer_info->dma_ptr, 1240 buffer_info->buffer_length, 1241 DMA_TO_DEVICE); 1242 } 1243 buffer_info->dma_ptr = 0; 1244 buffer_info->buffer_length = 0; 1245 } 1246 if (!buffer_info->skb) 1247 goto clear_active; 1248 1249 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) { 1250 dev_kfree_skb(buffer_info->skb); 1251 goto clear_skb; 1252 } 1253 1254 if (cleanup) { 1255 lan743x_ptp_unrequest_tx_timestamp(tx->adapter); 1256 dev_kfree_skb(buffer_info->skb); 1257 } else { 1258 ignore_sync = (buffer_info->flags & 1259 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0; 1260 lan743x_ptp_tx_timestamp_skb(tx->adapter, 1261 buffer_info->skb, ignore_sync); 1262 } 1263 1264 clear_skb: 1265 buffer_info->skb = NULL; 1266 1267 clear_active: 1268 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE; 1269 1270 done: 1271 memset(buffer_info, 0, sizeof(*buffer_info)); 1272 memset(descriptor, 0, sizeof(*descriptor)); 1273 } 1274 1275 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index) 1276 { 1277 return ((++index) % tx->ring_size); 1278 } 1279 1280 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx) 1281 { 1282 while ((*tx->head_cpu_ptr) != (tx->last_head)) { 1283 lan743x_tx_release_desc(tx, tx->last_head, false); 1284 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1285 } 1286 } 1287 1288 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx) 1289 { 1290 u32 original_head = 0; 1291 1292 original_head = tx->last_head; 1293 do { 1294 lan743x_tx_release_desc(tx, tx->last_head, true); 1295 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1296 } while (tx->last_head != original_head); 1297 memset(tx->ring_cpu_ptr, 0, 1298 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size)); 1299 memset(tx->buffer_info, 0, 1300 sizeof(*tx->buffer_info) * (tx->ring_size)); 1301 } 1302 1303 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx, 1304 struct sk_buff *skb) 1305 { 1306 int result = 1; /* 1 for the main skb buffer */ 1307 int nr_frags = 0; 1308 1309 if (skb_is_gso(skb)) 1310 result++; /* requires an extension descriptor */ 1311 nr_frags = skb_shinfo(skb)->nr_frags; 1312 result += nr_frags; /* 1 for each fragment buffer */ 1313 return result; 1314 } 1315 1316 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx) 1317 { 1318 int last_head = tx->last_head; 1319 int last_tail = tx->last_tail; 1320 1321 if (last_tail >= last_head) 1322 return tx->ring_size - last_tail + last_head - 1; 1323 else 1324 return last_head - last_tail - 1; 1325 } 1326 1327 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx, 1328 bool enable_timestamping, 1329 bool enable_onestep_sync) 1330 { 1331 if (enable_timestamping) 1332 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED; 1333 else 1334 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED; 1335 if (enable_onestep_sync) 1336 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC; 1337 else 1338 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC; 1339 } 1340 1341 static int lan743x_tx_frame_start(struct lan743x_tx *tx, 1342 unsigned char *first_buffer, 1343 unsigned int first_buffer_length, 1344 unsigned int frame_length, 1345 bool time_stamp, 1346 bool check_sum) 1347 { 1348 /* called only from within lan743x_tx_xmit_frame. 1349 * assuming tx->ring_lock has already been acquired. 1350 */ 1351 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1352 struct lan743x_tx_buffer_info *buffer_info = NULL; 1353 struct lan743x_adapter *adapter = tx->adapter; 1354 struct device *dev = &adapter->pdev->dev; 1355 dma_addr_t dma_ptr; 1356 1357 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS; 1358 tx->frame_first = tx->last_tail; 1359 tx->frame_tail = tx->frame_first; 1360 1361 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1362 buffer_info = &tx->buffer_info[tx->frame_tail]; 1363 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length, 1364 DMA_TO_DEVICE); 1365 if (dma_mapping_error(dev, dma_ptr)) 1366 return -ENOMEM; 1367 1368 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1369 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1370 tx_descriptor->data3 = (frame_length << 16) & 1371 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1372 1373 buffer_info->skb = NULL; 1374 buffer_info->dma_ptr = dma_ptr; 1375 buffer_info->buffer_length = first_buffer_length; 1376 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1377 1378 tx->frame_data0 = (first_buffer_length & 1379 TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1380 TX_DESC_DATA0_DTYPE_DATA_ | 1381 TX_DESC_DATA0_FS_ | 1382 TX_DESC_DATA0_FCS_; 1383 if (time_stamp) 1384 tx->frame_data0 |= TX_DESC_DATA0_TSE_; 1385 1386 if (check_sum) 1387 tx->frame_data0 |= TX_DESC_DATA0_ICE_ | 1388 TX_DESC_DATA0_IPE_ | 1389 TX_DESC_DATA0_TPE_; 1390 1391 /* data0 will be programmed in one of other frame assembler functions */ 1392 return 0; 1393 } 1394 1395 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx, 1396 unsigned int frame_length, 1397 int nr_frags) 1398 { 1399 /* called only from within lan743x_tx_xmit_frame. 1400 * assuming tx->ring_lock has already been acquired. 1401 */ 1402 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1403 struct lan743x_tx_buffer_info *buffer_info = NULL; 1404 1405 /* wrap up previous descriptor */ 1406 tx->frame_data0 |= TX_DESC_DATA0_EXT_; 1407 if (nr_frags <= 0) { 1408 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1409 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1410 } 1411 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1412 tx_descriptor->data0 = tx->frame_data0; 1413 1414 /* move to next descriptor */ 1415 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1416 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1417 buffer_info = &tx->buffer_info[tx->frame_tail]; 1418 1419 /* add extension descriptor */ 1420 tx_descriptor->data1 = 0; 1421 tx_descriptor->data2 = 0; 1422 tx_descriptor->data3 = 0; 1423 1424 buffer_info->skb = NULL; 1425 buffer_info->dma_ptr = 0; 1426 buffer_info->buffer_length = 0; 1427 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1428 1429 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) | 1430 TX_DESC_DATA0_DTYPE_EXT_ | 1431 TX_DESC_DATA0_EXT_LSO_; 1432 1433 /* data0 will be programmed in one of other frame assembler functions */ 1434 } 1435 1436 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx, 1437 const skb_frag_t *fragment, 1438 unsigned int frame_length) 1439 { 1440 /* called only from within lan743x_tx_xmit_frame 1441 * assuming tx->ring_lock has already been acquired 1442 */ 1443 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1444 struct lan743x_tx_buffer_info *buffer_info = NULL; 1445 struct lan743x_adapter *adapter = tx->adapter; 1446 struct device *dev = &adapter->pdev->dev; 1447 unsigned int fragment_length = 0; 1448 dma_addr_t dma_ptr; 1449 1450 fragment_length = skb_frag_size(fragment); 1451 if (!fragment_length) 1452 return 0; 1453 1454 /* wrap up previous descriptor */ 1455 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1456 tx_descriptor->data0 = tx->frame_data0; 1457 1458 /* move to next descriptor */ 1459 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1460 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1461 buffer_info = &tx->buffer_info[tx->frame_tail]; 1462 dma_ptr = skb_frag_dma_map(dev, fragment, 1463 0, fragment_length, 1464 DMA_TO_DEVICE); 1465 if (dma_mapping_error(dev, dma_ptr)) { 1466 int desc_index; 1467 1468 /* cleanup all previously setup descriptors */ 1469 desc_index = tx->frame_first; 1470 while (desc_index != tx->frame_tail) { 1471 lan743x_tx_release_desc(tx, desc_index, true); 1472 desc_index = lan743x_tx_next_index(tx, desc_index); 1473 } 1474 dma_wmb(); 1475 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1476 tx->frame_first = 0; 1477 tx->frame_data0 = 0; 1478 tx->frame_tail = 0; 1479 return -ENOMEM; 1480 } 1481 1482 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1483 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1484 tx_descriptor->data3 = (frame_length << 16) & 1485 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1486 1487 buffer_info->skb = NULL; 1488 buffer_info->dma_ptr = dma_ptr; 1489 buffer_info->buffer_length = fragment_length; 1490 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1491 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT; 1492 1493 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1494 TX_DESC_DATA0_DTYPE_DATA_ | 1495 TX_DESC_DATA0_FCS_; 1496 1497 /* data0 will be programmed in one of other frame assembler functions */ 1498 return 0; 1499 } 1500 1501 static void lan743x_tx_frame_end(struct lan743x_tx *tx, 1502 struct sk_buff *skb, 1503 bool time_stamp, 1504 bool ignore_sync) 1505 { 1506 /* called only from within lan743x_tx_xmit_frame 1507 * assuming tx->ring_lock has already been acquired 1508 */ 1509 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1510 struct lan743x_tx_buffer_info *buffer_info = NULL; 1511 struct lan743x_adapter *adapter = tx->adapter; 1512 u32 tx_tail_flags = 0; 1513 1514 /* wrap up previous descriptor */ 1515 if ((tx->frame_data0 & TX_DESC_DATA0_DTYPE_MASK_) == 1516 TX_DESC_DATA0_DTYPE_DATA_) { 1517 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1518 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1519 } 1520 1521 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1522 buffer_info = &tx->buffer_info[tx->frame_tail]; 1523 buffer_info->skb = skb; 1524 if (time_stamp) 1525 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED; 1526 if (ignore_sync) 1527 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC; 1528 1529 tx_descriptor->data0 = tx->frame_data0; 1530 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1531 tx->last_tail = tx->frame_tail; 1532 1533 dma_wmb(); 1534 1535 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 1536 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_; 1537 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) 1538 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ | 1539 TX_TAIL_SET_TOP_INT_EN_; 1540 1541 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1542 tx_tail_flags | tx->frame_tail); 1543 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1544 } 1545 1546 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx, 1547 struct sk_buff *skb) 1548 { 1549 int required_number_of_descriptors = 0; 1550 unsigned int start_frame_length = 0; 1551 unsigned int frame_length = 0; 1552 unsigned int head_length = 0; 1553 unsigned long irq_flags = 0; 1554 bool do_timestamp = false; 1555 bool ignore_sync = false; 1556 int nr_frags = 0; 1557 bool gso = false; 1558 int j; 1559 1560 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb); 1561 1562 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1563 if (required_number_of_descriptors > 1564 lan743x_tx_get_avail_desc(tx)) { 1565 if (required_number_of_descriptors > (tx->ring_size - 1)) { 1566 dev_kfree_skb(skb); 1567 } else { 1568 /* save to overflow buffer */ 1569 tx->overflow_skb = skb; 1570 netif_stop_queue(tx->adapter->netdev); 1571 } 1572 goto unlock; 1573 } 1574 1575 /* space available, transmit skb */ 1576 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 1577 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) && 1578 (lan743x_ptp_request_tx_timestamp(tx->adapter))) { 1579 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 1580 do_timestamp = true; 1581 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC) 1582 ignore_sync = true; 1583 } 1584 head_length = skb_headlen(skb); 1585 frame_length = skb_pagelen(skb); 1586 nr_frags = skb_shinfo(skb)->nr_frags; 1587 start_frame_length = frame_length; 1588 gso = skb_is_gso(skb); 1589 if (gso) { 1590 start_frame_length = max(skb_shinfo(skb)->gso_size, 1591 (unsigned short)8); 1592 } 1593 1594 if (lan743x_tx_frame_start(tx, 1595 skb->data, head_length, 1596 start_frame_length, 1597 do_timestamp, 1598 skb->ip_summed == CHECKSUM_PARTIAL)) { 1599 dev_kfree_skb(skb); 1600 goto unlock; 1601 } 1602 1603 if (gso) 1604 lan743x_tx_frame_add_lso(tx, frame_length, nr_frags); 1605 1606 if (nr_frags <= 0) 1607 goto finish; 1608 1609 for (j = 0; j < nr_frags; j++) { 1610 const skb_frag_t *frag = &(skb_shinfo(skb)->frags[j]); 1611 1612 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) { 1613 /* upon error no need to call 1614 * lan743x_tx_frame_end 1615 * frame assembler clean up was performed inside 1616 * lan743x_tx_frame_add_fragment 1617 */ 1618 dev_kfree_skb(skb); 1619 goto unlock; 1620 } 1621 } 1622 1623 finish: 1624 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync); 1625 1626 unlock: 1627 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1628 return NETDEV_TX_OK; 1629 } 1630 1631 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight) 1632 { 1633 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi); 1634 struct lan743x_adapter *adapter = tx->adapter; 1635 bool start_transmitter = false; 1636 unsigned long irq_flags = 0; 1637 u32 ioc_bit = 0; 1638 u32 int_sts = 0; 1639 1640 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 1641 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 1642 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) 1643 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit); 1644 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1645 1646 /* clean up tx ring */ 1647 lan743x_tx_release_completed_descriptors(tx); 1648 if (netif_queue_stopped(adapter->netdev)) { 1649 if (tx->overflow_skb) { 1650 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <= 1651 lan743x_tx_get_avail_desc(tx)) 1652 start_transmitter = true; 1653 } else { 1654 netif_wake_queue(adapter->netdev); 1655 } 1656 } 1657 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1658 1659 if (start_transmitter) { 1660 /* space is now available, transmit overflow skb */ 1661 lan743x_tx_xmit_frame(tx, tx->overflow_skb); 1662 tx->overflow_skb = NULL; 1663 netif_wake_queue(adapter->netdev); 1664 } 1665 1666 if (!napi_complete(napi)) 1667 goto done; 1668 1669 /* enable isr */ 1670 lan743x_csr_write(adapter, INT_EN_SET, 1671 INT_BIT_DMA_TX_(tx->channel_number)); 1672 lan743x_csr_read(adapter, INT_STS); 1673 1674 done: 1675 return 0; 1676 } 1677 1678 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx) 1679 { 1680 if (tx->head_cpu_ptr) { 1681 pci_free_consistent(tx->adapter->pdev, 1682 sizeof(*tx->head_cpu_ptr), 1683 (void *)(tx->head_cpu_ptr), 1684 tx->head_dma_ptr); 1685 tx->head_cpu_ptr = NULL; 1686 tx->head_dma_ptr = 0; 1687 } 1688 kfree(tx->buffer_info); 1689 tx->buffer_info = NULL; 1690 1691 if (tx->ring_cpu_ptr) { 1692 pci_free_consistent(tx->adapter->pdev, 1693 tx->ring_allocation_size, 1694 tx->ring_cpu_ptr, 1695 tx->ring_dma_ptr); 1696 tx->ring_allocation_size = 0; 1697 tx->ring_cpu_ptr = NULL; 1698 tx->ring_dma_ptr = 0; 1699 } 1700 tx->ring_size = 0; 1701 } 1702 1703 static int lan743x_tx_ring_init(struct lan743x_tx *tx) 1704 { 1705 size_t ring_allocation_size = 0; 1706 void *cpu_ptr = NULL; 1707 dma_addr_t dma_ptr; 1708 int ret = -ENOMEM; 1709 1710 tx->ring_size = LAN743X_TX_RING_SIZE; 1711 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) { 1712 ret = -EINVAL; 1713 goto cleanup; 1714 } 1715 ring_allocation_size = ALIGN(tx->ring_size * 1716 sizeof(struct lan743x_tx_descriptor), 1717 PAGE_SIZE); 1718 dma_ptr = 0; 1719 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1720 ring_allocation_size, &dma_ptr); 1721 if (!cpu_ptr) { 1722 ret = -ENOMEM; 1723 goto cleanup; 1724 } 1725 1726 tx->ring_allocation_size = ring_allocation_size; 1727 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr; 1728 tx->ring_dma_ptr = dma_ptr; 1729 1730 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL); 1731 if (!cpu_ptr) { 1732 ret = -ENOMEM; 1733 goto cleanup; 1734 } 1735 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr; 1736 dma_ptr = 0; 1737 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1738 sizeof(*tx->head_cpu_ptr), &dma_ptr); 1739 if (!cpu_ptr) { 1740 ret = -ENOMEM; 1741 goto cleanup; 1742 } 1743 1744 tx->head_cpu_ptr = cpu_ptr; 1745 tx->head_dma_ptr = dma_ptr; 1746 if (tx->head_dma_ptr & 0x3) { 1747 ret = -ENOMEM; 1748 goto cleanup; 1749 } 1750 1751 return 0; 1752 1753 cleanup: 1754 lan743x_tx_ring_cleanup(tx); 1755 return ret; 1756 } 1757 1758 static void lan743x_tx_close(struct lan743x_tx *tx) 1759 { 1760 struct lan743x_adapter *adapter = tx->adapter; 1761 1762 lan743x_csr_write(adapter, 1763 DMAC_CMD, 1764 DMAC_CMD_STOP_T_(tx->channel_number)); 1765 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number); 1766 1767 lan743x_csr_write(adapter, 1768 DMAC_INT_EN_CLR, 1769 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1770 lan743x_csr_write(adapter, INT_EN_CLR, 1771 INT_BIT_DMA_TX_(tx->channel_number)); 1772 napi_disable(&tx->napi); 1773 netif_napi_del(&tx->napi); 1774 1775 lan743x_csr_write(adapter, FCT_TX_CTL, 1776 FCT_TX_CTL_DIS_(tx->channel_number)); 1777 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1778 FCT_TX_CTL_EN_(tx->channel_number), 1779 0, 1000, 20000, 100); 1780 1781 lan743x_tx_release_all_descriptors(tx); 1782 1783 if (tx->overflow_skb) { 1784 dev_kfree_skb(tx->overflow_skb); 1785 tx->overflow_skb = NULL; 1786 } 1787 1788 lan743x_tx_ring_cleanup(tx); 1789 } 1790 1791 static int lan743x_tx_open(struct lan743x_tx *tx) 1792 { 1793 struct lan743x_adapter *adapter = NULL; 1794 u32 data = 0; 1795 int ret; 1796 1797 adapter = tx->adapter; 1798 ret = lan743x_tx_ring_init(tx); 1799 if (ret) 1800 return ret; 1801 1802 /* initialize fifo */ 1803 lan743x_csr_write(adapter, FCT_TX_CTL, 1804 FCT_TX_CTL_RESET_(tx->channel_number)); 1805 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1806 FCT_TX_CTL_RESET_(tx->channel_number), 1807 0, 1000, 20000, 100); 1808 1809 /* enable fifo */ 1810 lan743x_csr_write(adapter, FCT_TX_CTL, 1811 FCT_TX_CTL_EN_(tx->channel_number)); 1812 1813 /* reset tx channel */ 1814 lan743x_csr_write(adapter, DMAC_CMD, 1815 DMAC_CMD_TX_SWR_(tx->channel_number)); 1816 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 1817 DMAC_CMD_TX_SWR_(tx->channel_number), 1818 0, 1000, 20000, 100); 1819 1820 /* Write TX_BASE_ADDR */ 1821 lan743x_csr_write(adapter, 1822 TX_BASE_ADDRH(tx->channel_number), 1823 DMA_ADDR_HIGH32(tx->ring_dma_ptr)); 1824 lan743x_csr_write(adapter, 1825 TX_BASE_ADDRL(tx->channel_number), 1826 DMA_ADDR_LOW32(tx->ring_dma_ptr)); 1827 1828 /* Write TX_CFG_B */ 1829 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number)); 1830 data &= ~TX_CFG_B_TX_RING_LEN_MASK_; 1831 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_); 1832 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1833 data |= TX_CFG_B_TDMABL_512_; 1834 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data); 1835 1836 /* Write TX_CFG_A */ 1837 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_; 1838 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 1839 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_; 1840 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10); 1841 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04); 1842 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07); 1843 } 1844 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data); 1845 1846 /* Write TX_HEAD_WRITEBACK_ADDR */ 1847 lan743x_csr_write(adapter, 1848 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number), 1849 DMA_ADDR_HIGH32(tx->head_dma_ptr)); 1850 lan743x_csr_write(adapter, 1851 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number), 1852 DMA_ADDR_LOW32(tx->head_dma_ptr)); 1853 1854 /* set last head */ 1855 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number)); 1856 1857 /* write TX_TAIL */ 1858 tx->last_tail = 0; 1859 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1860 (u32)(tx->last_tail)); 1861 tx->vector_flags = lan743x_intr_get_vector_flags(adapter, 1862 INT_BIT_DMA_TX_ 1863 (tx->channel_number)); 1864 netif_tx_napi_add(adapter->netdev, 1865 &tx->napi, lan743x_tx_napi_poll, 1866 tx->ring_size - 1); 1867 napi_enable(&tx->napi); 1868 1869 data = 0; 1870 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 1871 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_; 1872 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 1873 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_; 1874 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 1875 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_; 1876 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 1877 data |= TX_CFG_C_TX_INT_EN_R2C_; 1878 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data); 1879 1880 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)) 1881 lan743x_csr_write(adapter, INT_EN_SET, 1882 INT_BIT_DMA_TX_(tx->channel_number)); 1883 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 1884 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1885 1886 /* start dmac channel */ 1887 lan743x_csr_write(adapter, DMAC_CMD, 1888 DMAC_CMD_START_T_(tx->channel_number)); 1889 return 0; 1890 } 1891 1892 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index) 1893 { 1894 return ((++index) % rx->ring_size); 1895 } 1896 1897 static struct sk_buff *lan743x_rx_allocate_skb(struct lan743x_rx *rx) 1898 { 1899 int length = 0; 1900 1901 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1902 return __netdev_alloc_skb(rx->adapter->netdev, 1903 length, GFP_ATOMIC | GFP_DMA); 1904 } 1905 1906 static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index, 1907 struct sk_buff *skb) 1908 { 1909 struct lan743x_rx_buffer_info *buffer_info; 1910 struct lan743x_rx_descriptor *descriptor; 1911 int length = 0; 1912 1913 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1914 descriptor = &rx->ring_cpu_ptr[index]; 1915 buffer_info = &rx->buffer_info[index]; 1916 buffer_info->skb = skb; 1917 if (!(buffer_info->skb)) 1918 return -ENOMEM; 1919 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev, 1920 buffer_info->skb->data, 1921 length, 1922 DMA_FROM_DEVICE); 1923 if (dma_mapping_error(&rx->adapter->pdev->dev, 1924 buffer_info->dma_ptr)) { 1925 buffer_info->dma_ptr = 0; 1926 return -ENOMEM; 1927 } 1928 1929 buffer_info->buffer_length = length; 1930 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1931 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1932 descriptor->data3 = 0; 1933 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1934 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1935 skb_reserve(buffer_info->skb, RX_HEAD_PADDING); 1936 1937 return 0; 1938 } 1939 1940 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index) 1941 { 1942 struct lan743x_rx_buffer_info *buffer_info; 1943 struct lan743x_rx_descriptor *descriptor; 1944 1945 descriptor = &rx->ring_cpu_ptr[index]; 1946 buffer_info = &rx->buffer_info[index]; 1947 1948 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1949 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1950 descriptor->data3 = 0; 1951 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1952 ((buffer_info->buffer_length) & 1953 RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1954 } 1955 1956 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index) 1957 { 1958 struct lan743x_rx_buffer_info *buffer_info; 1959 struct lan743x_rx_descriptor *descriptor; 1960 1961 descriptor = &rx->ring_cpu_ptr[index]; 1962 buffer_info = &rx->buffer_info[index]; 1963 1964 memset(descriptor, 0, sizeof(*descriptor)); 1965 1966 if (buffer_info->dma_ptr) { 1967 dma_unmap_single(&rx->adapter->pdev->dev, 1968 buffer_info->dma_ptr, 1969 buffer_info->buffer_length, 1970 DMA_FROM_DEVICE); 1971 buffer_info->dma_ptr = 0; 1972 } 1973 1974 if (buffer_info->skb) { 1975 dev_kfree_skb(buffer_info->skb); 1976 buffer_info->skb = NULL; 1977 } 1978 1979 memset(buffer_info, 0, sizeof(*buffer_info)); 1980 } 1981 1982 static int lan743x_rx_process_packet(struct lan743x_rx *rx) 1983 { 1984 struct skb_shared_hwtstamps *hwtstamps = NULL; 1985 int result = RX_PROCESS_RESULT_NOTHING_TO_DO; 1986 struct lan743x_rx_buffer_info *buffer_info; 1987 struct lan743x_rx_descriptor *descriptor; 1988 int current_head_index = -1; 1989 int extension_index = -1; 1990 int first_index = -1; 1991 int last_index = -1; 1992 1993 current_head_index = *rx->head_cpu_ptr; 1994 if (current_head_index < 0 || current_head_index >= rx->ring_size) 1995 goto done; 1996 1997 if (rx->last_head < 0 || rx->last_head >= rx->ring_size) 1998 goto done; 1999 2000 if (rx->last_head != current_head_index) { 2001 descriptor = &rx->ring_cpu_ptr[rx->last_head]; 2002 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2003 goto done; 2004 2005 if (!(descriptor->data0 & RX_DESC_DATA0_FS_)) 2006 goto done; 2007 2008 first_index = rx->last_head; 2009 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2010 last_index = rx->last_head; 2011 } else { 2012 int index; 2013 2014 index = lan743x_rx_next_index(rx, first_index); 2015 while (index != current_head_index) { 2016 descriptor = &rx->ring_cpu_ptr[index]; 2017 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2018 goto done; 2019 2020 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2021 last_index = index; 2022 break; 2023 } 2024 index = lan743x_rx_next_index(rx, index); 2025 } 2026 } 2027 if (last_index >= 0) { 2028 descriptor = &rx->ring_cpu_ptr[last_index]; 2029 if (descriptor->data0 & RX_DESC_DATA0_EXT_) { 2030 /* extension is expected to follow */ 2031 int index = lan743x_rx_next_index(rx, 2032 last_index); 2033 if (index != current_head_index) { 2034 descriptor = &rx->ring_cpu_ptr[index]; 2035 if (descriptor->data0 & 2036 RX_DESC_DATA0_OWN_) { 2037 goto done; 2038 } 2039 if (descriptor->data0 & 2040 RX_DESC_DATA0_EXT_) { 2041 extension_index = index; 2042 } else { 2043 goto done; 2044 } 2045 } else { 2046 /* extension is not yet available */ 2047 /* prevent processing of this packet */ 2048 first_index = -1; 2049 last_index = -1; 2050 } 2051 } 2052 } 2053 } 2054 if (first_index >= 0 && last_index >= 0) { 2055 int real_last_index = last_index; 2056 struct sk_buff *skb = NULL; 2057 u32 ts_sec = 0; 2058 u32 ts_nsec = 0; 2059 2060 /* packet is available */ 2061 if (first_index == last_index) { 2062 /* single buffer packet */ 2063 struct sk_buff *new_skb = NULL; 2064 int packet_length; 2065 2066 new_skb = lan743x_rx_allocate_skb(rx); 2067 if (!new_skb) { 2068 /* failed to allocate next skb. 2069 * Memory is very low. 2070 * Drop this packet and reuse buffer. 2071 */ 2072 lan743x_rx_reuse_ring_element(rx, first_index); 2073 goto process_extension; 2074 } 2075 2076 buffer_info = &rx->buffer_info[first_index]; 2077 skb = buffer_info->skb; 2078 descriptor = &rx->ring_cpu_ptr[first_index]; 2079 2080 /* unmap from dma */ 2081 if (buffer_info->dma_ptr) { 2082 dma_unmap_single(&rx->adapter->pdev->dev, 2083 buffer_info->dma_ptr, 2084 buffer_info->buffer_length, 2085 DMA_FROM_DEVICE); 2086 buffer_info->dma_ptr = 0; 2087 buffer_info->buffer_length = 0; 2088 } 2089 buffer_info->skb = NULL; 2090 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_ 2091 (descriptor->data0); 2092 skb_put(skb, packet_length - 4); 2093 skb->protocol = eth_type_trans(skb, 2094 rx->adapter->netdev); 2095 lan743x_rx_init_ring_element(rx, first_index, new_skb); 2096 } else { 2097 int index = first_index; 2098 2099 /* multi buffer packet not supported */ 2100 /* this should not happen since 2101 * buffers are allocated to be at least jumbo size 2102 */ 2103 2104 /* clean up buffers */ 2105 if (first_index <= last_index) { 2106 while ((index >= first_index) && 2107 (index <= last_index)) { 2108 lan743x_rx_reuse_ring_element(rx, 2109 index); 2110 index = lan743x_rx_next_index(rx, 2111 index); 2112 } 2113 } else { 2114 while ((index >= first_index) || 2115 (index <= last_index)) { 2116 lan743x_rx_reuse_ring_element(rx, 2117 index); 2118 index = lan743x_rx_next_index(rx, 2119 index); 2120 } 2121 } 2122 } 2123 2124 process_extension: 2125 if (extension_index >= 0) { 2126 descriptor = &rx->ring_cpu_ptr[extension_index]; 2127 buffer_info = &rx->buffer_info[extension_index]; 2128 2129 ts_sec = descriptor->data1; 2130 ts_nsec = (descriptor->data2 & 2131 RX_DESC_DATA2_TS_NS_MASK_); 2132 lan743x_rx_reuse_ring_element(rx, extension_index); 2133 real_last_index = extension_index; 2134 } 2135 2136 if (!skb) { 2137 result = RX_PROCESS_RESULT_PACKET_DROPPED; 2138 goto move_forward; 2139 } 2140 2141 if (extension_index < 0) 2142 goto pass_packet_to_os; 2143 hwtstamps = skb_hwtstamps(skb); 2144 if (hwtstamps) 2145 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec); 2146 2147 pass_packet_to_os: 2148 /* pass packet to OS */ 2149 napi_gro_receive(&rx->napi, skb); 2150 result = RX_PROCESS_RESULT_PACKET_RECEIVED; 2151 2152 move_forward: 2153 /* push tail and head forward */ 2154 rx->last_tail = real_last_index; 2155 rx->last_head = lan743x_rx_next_index(rx, real_last_index); 2156 } 2157 done: 2158 return result; 2159 } 2160 2161 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight) 2162 { 2163 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi); 2164 struct lan743x_adapter *adapter = rx->adapter; 2165 u32 rx_tail_flags = 0; 2166 int count; 2167 2168 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) { 2169 /* clear int status bit before reading packet */ 2170 lan743x_csr_write(adapter, DMAC_INT_STS, 2171 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2172 } 2173 count = 0; 2174 while (count < weight) { 2175 int rx_process_result = -1; 2176 2177 rx_process_result = lan743x_rx_process_packet(rx); 2178 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) { 2179 count++; 2180 } else if (rx_process_result == 2181 RX_PROCESS_RESULT_NOTHING_TO_DO) { 2182 break; 2183 } else if (rx_process_result == 2184 RX_PROCESS_RESULT_PACKET_DROPPED) { 2185 continue; 2186 } 2187 } 2188 rx->frame_count += count; 2189 if (count == weight) 2190 goto done; 2191 2192 if (!napi_complete_done(napi, count)) 2193 goto done; 2194 2195 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 2196 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_; 2197 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) { 2198 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_; 2199 } else { 2200 lan743x_csr_write(adapter, INT_EN_SET, 2201 INT_BIT_DMA_RX_(rx->channel_number)); 2202 } 2203 2204 /* update RX_TAIL */ 2205 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2206 rx_tail_flags | rx->last_tail); 2207 done: 2208 return count; 2209 } 2210 2211 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx) 2212 { 2213 if (rx->buffer_info && rx->ring_cpu_ptr) { 2214 int index; 2215 2216 for (index = 0; index < rx->ring_size; index++) 2217 lan743x_rx_release_ring_element(rx, index); 2218 } 2219 2220 if (rx->head_cpu_ptr) { 2221 pci_free_consistent(rx->adapter->pdev, 2222 sizeof(*rx->head_cpu_ptr), 2223 rx->head_cpu_ptr, 2224 rx->head_dma_ptr); 2225 rx->head_cpu_ptr = NULL; 2226 rx->head_dma_ptr = 0; 2227 } 2228 2229 kfree(rx->buffer_info); 2230 rx->buffer_info = NULL; 2231 2232 if (rx->ring_cpu_ptr) { 2233 pci_free_consistent(rx->adapter->pdev, 2234 rx->ring_allocation_size, 2235 rx->ring_cpu_ptr, 2236 rx->ring_dma_ptr); 2237 rx->ring_allocation_size = 0; 2238 rx->ring_cpu_ptr = NULL; 2239 rx->ring_dma_ptr = 0; 2240 } 2241 2242 rx->ring_size = 0; 2243 rx->last_head = 0; 2244 } 2245 2246 static int lan743x_rx_ring_init(struct lan743x_rx *rx) 2247 { 2248 size_t ring_allocation_size = 0; 2249 dma_addr_t dma_ptr = 0; 2250 void *cpu_ptr = NULL; 2251 int ret = -ENOMEM; 2252 int index = 0; 2253 2254 rx->ring_size = LAN743X_RX_RING_SIZE; 2255 if (rx->ring_size <= 1) { 2256 ret = -EINVAL; 2257 goto cleanup; 2258 } 2259 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) { 2260 ret = -EINVAL; 2261 goto cleanup; 2262 } 2263 ring_allocation_size = ALIGN(rx->ring_size * 2264 sizeof(struct lan743x_rx_descriptor), 2265 PAGE_SIZE); 2266 dma_ptr = 0; 2267 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2268 ring_allocation_size, &dma_ptr); 2269 if (!cpu_ptr) { 2270 ret = -ENOMEM; 2271 goto cleanup; 2272 } 2273 rx->ring_allocation_size = ring_allocation_size; 2274 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr; 2275 rx->ring_dma_ptr = dma_ptr; 2276 2277 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info), 2278 GFP_KERNEL); 2279 if (!cpu_ptr) { 2280 ret = -ENOMEM; 2281 goto cleanup; 2282 } 2283 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr; 2284 dma_ptr = 0; 2285 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2286 sizeof(*rx->head_cpu_ptr), &dma_ptr); 2287 if (!cpu_ptr) { 2288 ret = -ENOMEM; 2289 goto cleanup; 2290 } 2291 2292 rx->head_cpu_ptr = cpu_ptr; 2293 rx->head_dma_ptr = dma_ptr; 2294 if (rx->head_dma_ptr & 0x3) { 2295 ret = -ENOMEM; 2296 goto cleanup; 2297 } 2298 2299 rx->last_head = 0; 2300 for (index = 0; index < rx->ring_size; index++) { 2301 struct sk_buff *new_skb = lan743x_rx_allocate_skb(rx); 2302 2303 ret = lan743x_rx_init_ring_element(rx, index, new_skb); 2304 if (ret) 2305 goto cleanup; 2306 } 2307 return 0; 2308 2309 cleanup: 2310 lan743x_rx_ring_cleanup(rx); 2311 return ret; 2312 } 2313 2314 static void lan743x_rx_close(struct lan743x_rx *rx) 2315 { 2316 struct lan743x_adapter *adapter = rx->adapter; 2317 2318 lan743x_csr_write(adapter, FCT_RX_CTL, 2319 FCT_RX_CTL_DIS_(rx->channel_number)); 2320 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2321 FCT_RX_CTL_EN_(rx->channel_number), 2322 0, 1000, 20000, 100); 2323 2324 lan743x_csr_write(adapter, DMAC_CMD, 2325 DMAC_CMD_STOP_R_(rx->channel_number)); 2326 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number); 2327 2328 lan743x_csr_write(adapter, DMAC_INT_EN_CLR, 2329 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2330 lan743x_csr_write(adapter, INT_EN_CLR, 2331 INT_BIT_DMA_RX_(rx->channel_number)); 2332 napi_disable(&rx->napi); 2333 2334 netif_napi_del(&rx->napi); 2335 2336 lan743x_rx_ring_cleanup(rx); 2337 } 2338 2339 static int lan743x_rx_open(struct lan743x_rx *rx) 2340 { 2341 struct lan743x_adapter *adapter = rx->adapter; 2342 u32 data = 0; 2343 int ret; 2344 2345 rx->frame_count = 0; 2346 ret = lan743x_rx_ring_init(rx); 2347 if (ret) 2348 goto return_error; 2349 2350 netif_napi_add(adapter->netdev, 2351 &rx->napi, lan743x_rx_napi_poll, 2352 rx->ring_size - 1); 2353 2354 lan743x_csr_write(adapter, DMAC_CMD, 2355 DMAC_CMD_RX_SWR_(rx->channel_number)); 2356 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 2357 DMAC_CMD_RX_SWR_(rx->channel_number), 2358 0, 1000, 20000, 100); 2359 2360 /* set ring base address */ 2361 lan743x_csr_write(adapter, 2362 RX_BASE_ADDRH(rx->channel_number), 2363 DMA_ADDR_HIGH32(rx->ring_dma_ptr)); 2364 lan743x_csr_write(adapter, 2365 RX_BASE_ADDRL(rx->channel_number), 2366 DMA_ADDR_LOW32(rx->ring_dma_ptr)); 2367 2368 /* set rx write back address */ 2369 lan743x_csr_write(adapter, 2370 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number), 2371 DMA_ADDR_HIGH32(rx->head_dma_ptr)); 2372 lan743x_csr_write(adapter, 2373 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number), 2374 DMA_ADDR_LOW32(rx->head_dma_ptr)); 2375 data = RX_CFG_A_RX_HP_WB_EN_; 2376 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 2377 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ | 2378 RX_CFG_A_RX_WB_THRES_SET_(0x7) | 2379 RX_CFG_A_RX_PF_THRES_SET_(16) | 2380 RX_CFG_A_RX_PF_PRI_THRES_SET_(4)); 2381 } 2382 2383 /* set RX_CFG_A */ 2384 lan743x_csr_write(adapter, 2385 RX_CFG_A(rx->channel_number), data); 2386 2387 /* set RX_CFG_B */ 2388 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number)); 2389 data &= ~RX_CFG_B_RX_PAD_MASK_; 2390 if (!RX_HEAD_PADDING) 2391 data |= RX_CFG_B_RX_PAD_0_; 2392 else 2393 data |= RX_CFG_B_RX_PAD_2_; 2394 data &= ~RX_CFG_B_RX_RING_LEN_MASK_; 2395 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_); 2396 data |= RX_CFG_B_TS_ALL_RX_; 2397 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 2398 data |= RX_CFG_B_RDMABL_512_; 2399 2400 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data); 2401 rx->vector_flags = lan743x_intr_get_vector_flags(adapter, 2402 INT_BIT_DMA_RX_ 2403 (rx->channel_number)); 2404 2405 /* set RX_CFG_C */ 2406 data = 0; 2407 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 2408 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_; 2409 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 2410 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_; 2411 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 2412 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_; 2413 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 2414 data |= RX_CFG_C_RX_INT_EN_R2C_; 2415 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data); 2416 2417 rx->last_tail = ((u32)(rx->ring_size - 1)); 2418 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2419 rx->last_tail); 2420 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number)); 2421 if (rx->last_head) { 2422 ret = -EIO; 2423 goto napi_delete; 2424 } 2425 2426 napi_enable(&rx->napi); 2427 2428 lan743x_csr_write(adapter, INT_EN_SET, 2429 INT_BIT_DMA_RX_(rx->channel_number)); 2430 lan743x_csr_write(adapter, DMAC_INT_STS, 2431 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2432 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 2433 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2434 lan743x_csr_write(adapter, DMAC_CMD, 2435 DMAC_CMD_START_R_(rx->channel_number)); 2436 2437 /* initialize fifo */ 2438 lan743x_csr_write(adapter, FCT_RX_CTL, 2439 FCT_RX_CTL_RESET_(rx->channel_number)); 2440 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2441 FCT_RX_CTL_RESET_(rx->channel_number), 2442 0, 1000, 20000, 100); 2443 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number), 2444 FCT_FLOW_CTL_REQ_EN_ | 2445 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) | 2446 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA)); 2447 2448 /* enable fifo */ 2449 lan743x_csr_write(adapter, FCT_RX_CTL, 2450 FCT_RX_CTL_EN_(rx->channel_number)); 2451 return 0; 2452 2453 napi_delete: 2454 netif_napi_del(&rx->napi); 2455 lan743x_rx_ring_cleanup(rx); 2456 2457 return_error: 2458 return ret; 2459 } 2460 2461 static int lan743x_netdev_close(struct net_device *netdev) 2462 { 2463 struct lan743x_adapter *adapter = netdev_priv(netdev); 2464 int index; 2465 2466 lan743x_tx_close(&adapter->tx[0]); 2467 2468 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) 2469 lan743x_rx_close(&adapter->rx[index]); 2470 2471 lan743x_ptp_close(adapter); 2472 2473 lan743x_phy_close(adapter); 2474 2475 lan743x_mac_close(adapter); 2476 2477 lan743x_intr_close(adapter); 2478 2479 return 0; 2480 } 2481 2482 static int lan743x_netdev_open(struct net_device *netdev) 2483 { 2484 struct lan743x_adapter *adapter = netdev_priv(netdev); 2485 int index; 2486 int ret; 2487 2488 ret = lan743x_intr_open(adapter); 2489 if (ret) 2490 goto return_error; 2491 2492 ret = lan743x_mac_open(adapter); 2493 if (ret) 2494 goto close_intr; 2495 2496 ret = lan743x_phy_open(adapter); 2497 if (ret) 2498 goto close_mac; 2499 2500 ret = lan743x_ptp_open(adapter); 2501 if (ret) 2502 goto close_phy; 2503 2504 lan743x_rfe_open(adapter); 2505 2506 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2507 ret = lan743x_rx_open(&adapter->rx[index]); 2508 if (ret) 2509 goto close_rx; 2510 } 2511 2512 ret = lan743x_tx_open(&adapter->tx[0]); 2513 if (ret) 2514 goto close_rx; 2515 2516 return 0; 2517 2518 close_rx: 2519 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2520 if (adapter->rx[index].ring_cpu_ptr) 2521 lan743x_rx_close(&adapter->rx[index]); 2522 } 2523 lan743x_ptp_close(adapter); 2524 2525 close_phy: 2526 lan743x_phy_close(adapter); 2527 2528 close_mac: 2529 lan743x_mac_close(adapter); 2530 2531 close_intr: 2532 lan743x_intr_close(adapter); 2533 2534 return_error: 2535 netif_warn(adapter, ifup, adapter->netdev, 2536 "Error opening LAN743x\n"); 2537 return ret; 2538 } 2539 2540 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb, 2541 struct net_device *netdev) 2542 { 2543 struct lan743x_adapter *adapter = netdev_priv(netdev); 2544 2545 return lan743x_tx_xmit_frame(&adapter->tx[0], skb); 2546 } 2547 2548 static int lan743x_netdev_ioctl(struct net_device *netdev, 2549 struct ifreq *ifr, int cmd) 2550 { 2551 if (!netif_running(netdev)) 2552 return -EINVAL; 2553 if (cmd == SIOCSHWTSTAMP) 2554 return lan743x_ptp_ioctl(netdev, ifr, cmd); 2555 return phy_mii_ioctl(netdev->phydev, ifr, cmd); 2556 } 2557 2558 static void lan743x_netdev_set_multicast(struct net_device *netdev) 2559 { 2560 struct lan743x_adapter *adapter = netdev_priv(netdev); 2561 2562 lan743x_rfe_set_multicast(adapter); 2563 } 2564 2565 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu) 2566 { 2567 struct lan743x_adapter *adapter = netdev_priv(netdev); 2568 int ret = 0; 2569 2570 ret = lan743x_mac_set_mtu(adapter, new_mtu); 2571 if (!ret) 2572 netdev->mtu = new_mtu; 2573 return ret; 2574 } 2575 2576 static void lan743x_netdev_get_stats64(struct net_device *netdev, 2577 struct rtnl_link_stats64 *stats) 2578 { 2579 struct lan743x_adapter *adapter = netdev_priv(netdev); 2580 2581 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES); 2582 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES); 2583 stats->rx_bytes = lan743x_csr_read(adapter, 2584 STAT_RX_UNICAST_BYTE_COUNT) + 2585 lan743x_csr_read(adapter, 2586 STAT_RX_BROADCAST_BYTE_COUNT) + 2587 lan743x_csr_read(adapter, 2588 STAT_RX_MULTICAST_BYTE_COUNT); 2589 stats->tx_bytes = lan743x_csr_read(adapter, 2590 STAT_TX_UNICAST_BYTE_COUNT) + 2591 lan743x_csr_read(adapter, 2592 STAT_TX_BROADCAST_BYTE_COUNT) + 2593 lan743x_csr_read(adapter, 2594 STAT_TX_MULTICAST_BYTE_COUNT); 2595 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) + 2596 lan743x_csr_read(adapter, 2597 STAT_RX_ALIGNMENT_ERRORS) + 2598 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) + 2599 lan743x_csr_read(adapter, 2600 STAT_RX_UNDERSIZE_FRAME_ERRORS) + 2601 lan743x_csr_read(adapter, 2602 STAT_RX_OVERSIZE_FRAME_ERRORS); 2603 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) + 2604 lan743x_csr_read(adapter, 2605 STAT_TX_EXCESS_DEFERRAL_ERRORS) + 2606 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS); 2607 stats->rx_dropped = lan743x_csr_read(adapter, 2608 STAT_RX_DROPPED_FRAMES); 2609 stats->tx_dropped = lan743x_csr_read(adapter, 2610 STAT_TX_EXCESSIVE_COLLISION); 2611 stats->multicast = lan743x_csr_read(adapter, 2612 STAT_RX_MULTICAST_FRAMES) + 2613 lan743x_csr_read(adapter, 2614 STAT_TX_MULTICAST_FRAMES); 2615 stats->collisions = lan743x_csr_read(adapter, 2616 STAT_TX_SINGLE_COLLISIONS) + 2617 lan743x_csr_read(adapter, 2618 STAT_TX_MULTIPLE_COLLISIONS) + 2619 lan743x_csr_read(adapter, 2620 STAT_TX_LATE_COLLISIONS); 2621 } 2622 2623 static int lan743x_netdev_set_mac_address(struct net_device *netdev, 2624 void *addr) 2625 { 2626 struct lan743x_adapter *adapter = netdev_priv(netdev); 2627 struct sockaddr *sock_addr = addr; 2628 int ret; 2629 2630 ret = eth_prepare_mac_addr_change(netdev, sock_addr); 2631 if (ret) 2632 return ret; 2633 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data); 2634 lan743x_mac_set_address(adapter, sock_addr->sa_data); 2635 lan743x_rfe_update_mac_address(adapter); 2636 return 0; 2637 } 2638 2639 static const struct net_device_ops lan743x_netdev_ops = { 2640 .ndo_open = lan743x_netdev_open, 2641 .ndo_stop = lan743x_netdev_close, 2642 .ndo_start_xmit = lan743x_netdev_xmit_frame, 2643 .ndo_do_ioctl = lan743x_netdev_ioctl, 2644 .ndo_set_rx_mode = lan743x_netdev_set_multicast, 2645 .ndo_change_mtu = lan743x_netdev_change_mtu, 2646 .ndo_get_stats64 = lan743x_netdev_get_stats64, 2647 .ndo_set_mac_address = lan743x_netdev_set_mac_address, 2648 }; 2649 2650 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter) 2651 { 2652 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2653 } 2654 2655 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter) 2656 { 2657 mdiobus_unregister(adapter->mdiobus); 2658 } 2659 2660 static void lan743x_full_cleanup(struct lan743x_adapter *adapter) 2661 { 2662 unregister_netdev(adapter->netdev); 2663 2664 lan743x_mdiobus_cleanup(adapter); 2665 lan743x_hardware_cleanup(adapter); 2666 lan743x_pci_cleanup(adapter); 2667 } 2668 2669 static int lan743x_hardware_init(struct lan743x_adapter *adapter, 2670 struct pci_dev *pdev) 2671 { 2672 struct lan743x_tx *tx; 2673 int index; 2674 int ret; 2675 2676 adapter->intr.irq = adapter->pdev->irq; 2677 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2678 mutex_init(&adapter->dp_lock); 2679 2680 ret = lan743x_gpio_init(adapter); 2681 if (ret) 2682 return ret; 2683 2684 ret = lan743x_mac_init(adapter); 2685 if (ret) 2686 return ret; 2687 2688 ret = lan743x_phy_init(adapter); 2689 if (ret) 2690 return ret; 2691 2692 ret = lan743x_ptp_init(adapter); 2693 if (ret) 2694 return ret; 2695 2696 lan743x_rfe_update_mac_address(adapter); 2697 2698 ret = lan743x_dmac_init(adapter); 2699 if (ret) 2700 return ret; 2701 2702 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2703 adapter->rx[index].adapter = adapter; 2704 adapter->rx[index].channel_number = index; 2705 } 2706 2707 tx = &adapter->tx[0]; 2708 tx->adapter = adapter; 2709 tx->channel_number = 0; 2710 spin_lock_init(&tx->ring_lock); 2711 return 0; 2712 } 2713 2714 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter) 2715 { 2716 int ret; 2717 2718 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev); 2719 if (!(adapter->mdiobus)) { 2720 ret = -ENOMEM; 2721 goto return_error; 2722 } 2723 2724 adapter->mdiobus->priv = (void *)adapter; 2725 adapter->mdiobus->read = lan743x_mdiobus_read; 2726 adapter->mdiobus->write = lan743x_mdiobus_write; 2727 adapter->mdiobus->name = "lan743x-mdiobus"; 2728 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE, 2729 "pci-%s", pci_name(adapter->pdev)); 2730 2731 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_) 2732 /* LAN7430 uses internal phy at address 1 */ 2733 adapter->mdiobus->phy_mask = ~(u32)BIT(1); 2734 2735 /* register mdiobus */ 2736 ret = mdiobus_register(adapter->mdiobus); 2737 if (ret < 0) 2738 goto return_error; 2739 return 0; 2740 2741 return_error: 2742 return ret; 2743 } 2744 2745 /* lan743x_pcidev_probe - Device Initialization Routine 2746 * @pdev: PCI device information struct 2747 * @id: entry in lan743x_pci_tbl 2748 * 2749 * Returns 0 on success, negative on failure 2750 * 2751 * initializes an adapter identified by a pci_dev structure. 2752 * The OS initialization, configuring of the adapter private structure, 2753 * and a hardware reset occur. 2754 **/ 2755 static int lan743x_pcidev_probe(struct pci_dev *pdev, 2756 const struct pci_device_id *id) 2757 { 2758 struct lan743x_adapter *adapter = NULL; 2759 struct net_device *netdev = NULL; 2760 int ret = -ENODEV; 2761 2762 netdev = devm_alloc_etherdev(&pdev->dev, 2763 sizeof(struct lan743x_adapter)); 2764 if (!netdev) 2765 goto return_error; 2766 2767 SET_NETDEV_DEV(netdev, &pdev->dev); 2768 pci_set_drvdata(pdev, netdev); 2769 adapter = netdev_priv(netdev); 2770 adapter->netdev = netdev; 2771 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE | 2772 NETIF_MSG_LINK | NETIF_MSG_IFUP | 2773 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED; 2774 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE; 2775 2776 ret = lan743x_pci_init(adapter, pdev); 2777 if (ret) 2778 goto return_error; 2779 2780 ret = lan743x_csr_init(adapter); 2781 if (ret) 2782 goto cleanup_pci; 2783 2784 ret = lan743x_hardware_init(adapter, pdev); 2785 if (ret) 2786 goto cleanup_pci; 2787 2788 ret = lan743x_mdiobus_init(adapter); 2789 if (ret) 2790 goto cleanup_hardware; 2791 2792 adapter->netdev->netdev_ops = &lan743x_netdev_ops; 2793 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops; 2794 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM; 2795 adapter->netdev->hw_features = adapter->netdev->features; 2796 2797 /* carrier off reporting is important to ethtool even BEFORE open */ 2798 netif_carrier_off(netdev); 2799 2800 ret = register_netdev(adapter->netdev); 2801 if (ret < 0) 2802 goto cleanup_mdiobus; 2803 return 0; 2804 2805 cleanup_mdiobus: 2806 lan743x_mdiobus_cleanup(adapter); 2807 2808 cleanup_hardware: 2809 lan743x_hardware_cleanup(adapter); 2810 2811 cleanup_pci: 2812 lan743x_pci_cleanup(adapter); 2813 2814 return_error: 2815 pr_warn("Initialization failed\n"); 2816 return ret; 2817 } 2818 2819 /** 2820 * lan743x_pcidev_remove - Device Removal Routine 2821 * @pdev: PCI device information struct 2822 * 2823 * this is called by the PCI subsystem to alert the driver 2824 * that it should release a PCI device. This could be caused by a 2825 * Hot-Plug event, or because the driver is going to be removed from 2826 * memory. 2827 **/ 2828 static void lan743x_pcidev_remove(struct pci_dev *pdev) 2829 { 2830 struct net_device *netdev = pci_get_drvdata(pdev); 2831 struct lan743x_adapter *adapter = netdev_priv(netdev); 2832 2833 lan743x_full_cleanup(adapter); 2834 } 2835 2836 static void lan743x_pcidev_shutdown(struct pci_dev *pdev) 2837 { 2838 struct net_device *netdev = pci_get_drvdata(pdev); 2839 struct lan743x_adapter *adapter = netdev_priv(netdev); 2840 2841 rtnl_lock(); 2842 netif_device_detach(netdev); 2843 2844 /* close netdev when netdev is at running state. 2845 * For instance, it is true when system goes to sleep by pm-suspend 2846 * However, it is false when system goes to sleep by suspend GUI menu 2847 */ 2848 if (netif_running(netdev)) 2849 lan743x_netdev_close(netdev); 2850 rtnl_unlock(); 2851 2852 #ifdef CONFIG_PM 2853 pci_save_state(pdev); 2854 #endif 2855 2856 /* clean up lan743x portion */ 2857 lan743x_hardware_cleanup(adapter); 2858 } 2859 2860 #ifdef CONFIG_PM_SLEEP 2861 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len) 2862 { 2863 return bitrev16(crc16(0xFFFF, buf, len)); 2864 } 2865 2866 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) 2867 { 2868 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; 2869 const u8 ipv6_multicast[3] = { 0x33, 0x33 }; 2870 const u8 arp_type[2] = { 0x08, 0x06 }; 2871 int mask_index; 2872 u32 pmtctl; 2873 u32 wucsr; 2874 u32 macrx; 2875 u16 crc; 2876 2877 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++) 2878 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0); 2879 2880 /* clear wake settings */ 2881 pmtctl = lan743x_csr_read(adapter, PMT_CTL); 2882 pmtctl |= PMT_CTL_WUPS_MASK_; 2883 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | 2884 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | 2885 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); 2886 2887 macrx = lan743x_csr_read(adapter, MAC_RX); 2888 2889 wucsr = 0; 2890 mask_index = 0; 2891 2892 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_; 2893 2894 if (adapter->wolopts & WAKE_PHY) { 2895 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_; 2896 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_; 2897 } 2898 if (adapter->wolopts & WAKE_MAGIC) { 2899 wucsr |= MAC_WUCSR_MPEN_; 2900 macrx |= MAC_RX_RXEN_; 2901 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2902 } 2903 if (adapter->wolopts & WAKE_UCAST) { 2904 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_; 2905 macrx |= MAC_RX_RXEN_; 2906 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2907 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2908 } 2909 if (adapter->wolopts & WAKE_BCAST) { 2910 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_; 2911 macrx |= MAC_RX_RXEN_; 2912 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2913 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2914 } 2915 if (adapter->wolopts & WAKE_MCAST) { 2916 /* IPv4 multicast */ 2917 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3); 2918 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2919 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2920 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2921 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2922 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7); 2923 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2924 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2925 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2926 mask_index++; 2927 2928 /* IPv6 multicast */ 2929 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2); 2930 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2931 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2932 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2933 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2934 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3); 2935 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2936 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2937 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2938 mask_index++; 2939 2940 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 2941 macrx |= MAC_RX_RXEN_; 2942 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2943 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2944 } 2945 if (adapter->wolopts & WAKE_ARP) { 2946 /* set MAC_WUF_CFG & WUF_MASK 2947 * for packettype (offset 12,13) = ARP (0x0806) 2948 */ 2949 crc = lan743x_pm_wakeframe_crc16(arp_type, 2); 2950 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2951 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ | 2952 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2953 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2954 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000); 2955 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2956 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2957 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2958 mask_index++; 2959 2960 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 2961 macrx |= MAC_RX_RXEN_; 2962 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2963 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2964 } 2965 2966 lan743x_csr_write(adapter, MAC_WUCSR, wucsr); 2967 lan743x_csr_write(adapter, PMT_CTL, pmtctl); 2968 lan743x_csr_write(adapter, MAC_RX, macrx); 2969 } 2970 2971 static int lan743x_pm_suspend(struct device *dev) 2972 { 2973 struct pci_dev *pdev = to_pci_dev(dev); 2974 struct net_device *netdev = pci_get_drvdata(pdev); 2975 struct lan743x_adapter *adapter = netdev_priv(netdev); 2976 int ret; 2977 2978 lan743x_pcidev_shutdown(pdev); 2979 2980 /* clear all wakes */ 2981 lan743x_csr_write(adapter, MAC_WUCSR, 0); 2982 lan743x_csr_write(adapter, MAC_WUCSR2, 0); 2983 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF); 2984 2985 if (adapter->wolopts) 2986 lan743x_pm_set_wol(adapter); 2987 2988 /* Host sets PME_En, put D3hot */ 2989 ret = pci_prepare_to_sleep(pdev); 2990 2991 return 0; 2992 } 2993 2994 static int lan743x_pm_resume(struct device *dev) 2995 { 2996 struct pci_dev *pdev = to_pci_dev(dev); 2997 struct net_device *netdev = pci_get_drvdata(pdev); 2998 struct lan743x_adapter *adapter = netdev_priv(netdev); 2999 int ret; 3000 3001 pci_set_power_state(pdev, PCI_D0); 3002 pci_restore_state(pdev); 3003 pci_save_state(pdev); 3004 3005 ret = lan743x_hardware_init(adapter, pdev); 3006 if (ret) { 3007 netif_err(adapter, probe, adapter->netdev, 3008 "lan743x_hardware_init returned %d\n", ret); 3009 } 3010 3011 /* open netdev when netdev is at running state while resume. 3012 * For instance, it is true when system wakesup after pm-suspend 3013 * However, it is false when system wakes up after suspend GUI menu 3014 */ 3015 if (netif_running(netdev)) 3016 lan743x_netdev_open(netdev); 3017 3018 netif_device_attach(netdev); 3019 3020 return 0; 3021 } 3022 3023 static const struct dev_pm_ops lan743x_pm_ops = { 3024 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume) 3025 }; 3026 #endif /* CONFIG_PM_SLEEP */ 3027 3028 static const struct pci_device_id lan743x_pcidev_tbl[] = { 3029 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) }, 3030 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) }, 3031 { 0, } 3032 }; 3033 3034 static struct pci_driver lan743x_pcidev_driver = { 3035 .name = DRIVER_NAME, 3036 .id_table = lan743x_pcidev_tbl, 3037 .probe = lan743x_pcidev_probe, 3038 .remove = lan743x_pcidev_remove, 3039 #ifdef CONFIG_PM_SLEEP 3040 .driver.pm = &lan743x_pm_ops, 3041 #endif 3042 .shutdown = lan743x_pcidev_shutdown, 3043 }; 3044 3045 module_pci_driver(lan743x_pcidev_driver); 3046 3047 MODULE_AUTHOR(DRIVER_AUTHOR); 3048 MODULE_DESCRIPTION(DRIVER_DESC); 3049 MODULE_LICENSE("GPL"); 3050