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_CLEAR | 589 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 590 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 591 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 592 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 593 } 594 595 for (index = 0; index < number_of_tx_vectors; index++) { 596 u32 int_bit = INT_BIT_DMA_TX_(index); 597 int vector = index + 1; 598 599 /* map TX interrupt to vector */ 600 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector); 601 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1); 602 if (flags & 603 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) { 604 int_vec_en_auto_clr |= INT_VEC_EN_(vector); 605 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR, 606 int_vec_en_auto_clr); 607 } 608 609 /* Remove TX interrupt from shared mask */ 610 intr->vector_list[0].int_mask &= ~int_bit; 611 ret = lan743x_intr_register_isr(adapter, vector, flags, 612 int_bit, lan743x_tx_isr, 613 &adapter->tx[index]); 614 if (ret) 615 goto clean_up; 616 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 617 if (!(flags & 618 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)) 619 lan743x_csr_write(adapter, INT_VEC_EN_SET, 620 INT_VEC_EN_(vector)); 621 } 622 } 623 if ((intr->number_of_vectors - LAN743X_USED_TX_CHANNELS) > 1) { 624 int number_of_rx_vectors = intr->number_of_vectors - 625 LAN743X_USED_TX_CHANNELS - 1; 626 627 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS) 628 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS; 629 630 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 631 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 632 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 633 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR | 634 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 635 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 636 637 if (adapter->csr.flags & 638 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 639 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR | 640 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 641 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 642 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 643 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 644 } 645 for (index = 0; index < number_of_rx_vectors; index++) { 646 int vector = index + 1 + LAN743X_USED_TX_CHANNELS; 647 u32 int_bit = INT_BIT_DMA_RX_(index); 648 649 /* map RX interrupt to vector */ 650 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector); 651 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0); 652 if (flags & 653 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) { 654 int_vec_en_auto_clr |= INT_VEC_EN_(vector); 655 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR, 656 int_vec_en_auto_clr); 657 } 658 659 /* Remove RX interrupt from shared mask */ 660 intr->vector_list[0].int_mask &= ~int_bit; 661 ret = lan743x_intr_register_isr(adapter, vector, flags, 662 int_bit, lan743x_rx_isr, 663 &adapter->rx[index]); 664 if (ret) 665 goto clean_up; 666 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 667 668 lan743x_csr_write(adapter, INT_VEC_EN_SET, 669 INT_VEC_EN_(vector)); 670 } 671 } 672 return 0; 673 674 clean_up: 675 lan743x_intr_close(adapter); 676 return ret; 677 } 678 679 static int lan743x_dp_write(struct lan743x_adapter *adapter, 680 u32 select, u32 addr, u32 length, u32 *buf) 681 { 682 int ret = -EIO; 683 u32 dp_sel; 684 int i; 685 686 mutex_lock(&adapter->dp_lock); 687 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_, 688 1, 40, 100, 100)) 689 goto unlock; 690 dp_sel = lan743x_csr_read(adapter, DP_SEL); 691 dp_sel &= ~DP_SEL_MASK_; 692 dp_sel |= select; 693 lan743x_csr_write(adapter, DP_SEL, dp_sel); 694 695 for (i = 0; i < length; i++) { 696 lan743x_csr_write(adapter, DP_ADDR, addr + i); 697 lan743x_csr_write(adapter, DP_DATA_0, buf[i]); 698 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_); 699 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_, 700 1, 40, 100, 100)) 701 goto unlock; 702 } 703 ret = 0; 704 705 unlock: 706 mutex_unlock(&adapter->dp_lock); 707 return ret; 708 } 709 710 static u32 lan743x_mac_mii_access(u16 id, u16 index, int read) 711 { 712 u32 ret; 713 714 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) & 715 MAC_MII_ACC_PHY_ADDR_MASK_; 716 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) & 717 MAC_MII_ACC_MIIRINDA_MASK_; 718 719 if (read) 720 ret |= MAC_MII_ACC_MII_READ_; 721 else 722 ret |= MAC_MII_ACC_MII_WRITE_; 723 ret |= MAC_MII_ACC_MII_BUSY_; 724 725 return ret; 726 } 727 728 static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter) 729 { 730 u32 data; 731 732 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data, 733 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000); 734 } 735 736 static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index) 737 { 738 struct lan743x_adapter *adapter = bus->priv; 739 u32 val, mii_access; 740 int ret; 741 742 /* comfirm MII not busy */ 743 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 744 if (ret < 0) 745 return ret; 746 747 /* set the address, index & direction (read from PHY) */ 748 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ); 749 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 750 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 751 if (ret < 0) 752 return ret; 753 754 val = lan743x_csr_read(adapter, MAC_MII_DATA); 755 return (int)(val & 0xFFFF); 756 } 757 758 static int lan743x_mdiobus_write(struct mii_bus *bus, 759 int phy_id, int index, u16 regval) 760 { 761 struct lan743x_adapter *adapter = bus->priv; 762 u32 val, mii_access; 763 int ret; 764 765 /* confirm MII not busy */ 766 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 767 if (ret < 0) 768 return ret; 769 val = (u32)regval; 770 lan743x_csr_write(adapter, MAC_MII_DATA, val); 771 772 /* set the address, index & direction (write to PHY) */ 773 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE); 774 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 775 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 776 return ret; 777 } 778 779 static void lan743x_mac_set_address(struct lan743x_adapter *adapter, 780 u8 *addr) 781 { 782 u32 addr_lo, addr_hi; 783 784 addr_lo = addr[0] | 785 addr[1] << 8 | 786 addr[2] << 16 | 787 addr[3] << 24; 788 addr_hi = addr[4] | 789 addr[5] << 8; 790 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo); 791 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi); 792 793 ether_addr_copy(adapter->mac_address, addr); 794 netif_info(adapter, drv, adapter->netdev, 795 "MAC address set to %pM\n", addr); 796 } 797 798 static int lan743x_mac_init(struct lan743x_adapter *adapter) 799 { 800 bool mac_address_valid = true; 801 struct net_device *netdev; 802 u32 mac_addr_hi = 0; 803 u32 mac_addr_lo = 0; 804 u32 data; 805 806 netdev = adapter->netdev; 807 808 /* setup auto duplex, and speed detection */ 809 data = lan743x_csr_read(adapter, MAC_CR); 810 data |= MAC_CR_ADD_ | MAC_CR_ASD_; 811 data |= MAC_CR_CNTR_RST_; 812 lan743x_csr_write(adapter, MAC_CR, data); 813 814 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH); 815 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL); 816 adapter->mac_address[0] = mac_addr_lo & 0xFF; 817 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF; 818 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF; 819 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF; 820 adapter->mac_address[4] = mac_addr_hi & 0xFF; 821 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF; 822 823 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) && 824 mac_addr_lo == 0xFFFFFFFF) { 825 mac_address_valid = false; 826 } else if (!is_valid_ether_addr(adapter->mac_address)) { 827 mac_address_valid = false; 828 } 829 830 if (!mac_address_valid) 831 eth_random_addr(adapter->mac_address); 832 lan743x_mac_set_address(adapter, adapter->mac_address); 833 ether_addr_copy(netdev->dev_addr, adapter->mac_address); 834 return 0; 835 } 836 837 static int lan743x_mac_open(struct lan743x_adapter *adapter) 838 { 839 int ret = 0; 840 u32 temp; 841 842 temp = lan743x_csr_read(adapter, MAC_RX); 843 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_); 844 temp = lan743x_csr_read(adapter, MAC_TX); 845 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_); 846 return ret; 847 } 848 849 static void lan743x_mac_close(struct lan743x_adapter *adapter) 850 { 851 u32 temp; 852 853 temp = lan743x_csr_read(adapter, MAC_TX); 854 temp &= ~MAC_TX_TXEN_; 855 lan743x_csr_write(adapter, MAC_TX, temp); 856 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_, 857 1, 1000, 20000, 100); 858 859 temp = lan743x_csr_read(adapter, MAC_RX); 860 temp &= ~MAC_RX_RXEN_; 861 lan743x_csr_write(adapter, MAC_RX, temp); 862 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 863 1, 1000, 20000, 100); 864 } 865 866 static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter, 867 bool tx_enable, bool rx_enable) 868 { 869 u32 flow_setting = 0; 870 871 /* set maximum pause time because when fifo space frees 872 * up a zero value pause frame will be sent to release the pause 873 */ 874 flow_setting = MAC_FLOW_CR_FCPT_MASK_; 875 if (tx_enable) 876 flow_setting |= MAC_FLOW_CR_TX_FCEN_; 877 if (rx_enable) 878 flow_setting |= MAC_FLOW_CR_RX_FCEN_; 879 lan743x_csr_write(adapter, MAC_FLOW, flow_setting); 880 } 881 882 static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu) 883 { 884 int enabled = 0; 885 u32 mac_rx = 0; 886 887 mac_rx = lan743x_csr_read(adapter, MAC_RX); 888 if (mac_rx & MAC_RX_RXEN_) { 889 enabled = 1; 890 if (mac_rx & MAC_RX_RXD_) { 891 lan743x_csr_write(adapter, MAC_RX, mac_rx); 892 mac_rx &= ~MAC_RX_RXD_; 893 } 894 mac_rx &= ~MAC_RX_RXEN_; 895 lan743x_csr_write(adapter, MAC_RX, mac_rx); 896 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 897 1, 1000, 20000, 100); 898 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_); 899 } 900 901 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_); 902 mac_rx |= (((new_mtu + ETH_HLEN + 4) << MAC_RX_MAX_SIZE_SHIFT_) & 903 MAC_RX_MAX_SIZE_MASK_); 904 lan743x_csr_write(adapter, MAC_RX, mac_rx); 905 906 if (enabled) { 907 mac_rx |= MAC_RX_RXEN_; 908 lan743x_csr_write(adapter, MAC_RX, mac_rx); 909 } 910 return 0; 911 } 912 913 /* PHY */ 914 static int lan743x_phy_reset(struct lan743x_adapter *adapter) 915 { 916 u32 data; 917 918 /* Only called with in probe, and before mdiobus_register */ 919 920 data = lan743x_csr_read(adapter, PMT_CTL); 921 data |= PMT_CTL_ETH_PHY_RST_; 922 lan743x_csr_write(adapter, PMT_CTL, data); 923 924 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data, 925 (!(data & PMT_CTL_ETH_PHY_RST_) && 926 (data & PMT_CTL_READY_)), 927 50000, 1000000); 928 } 929 930 static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter, 931 u8 duplex, u16 local_adv, 932 u16 remote_adv) 933 { 934 struct lan743x_phy *phy = &adapter->phy; 935 u8 cap; 936 937 if (phy->fc_autoneg) 938 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv); 939 else 940 cap = phy->fc_request_control; 941 942 lan743x_mac_flow_ctrl_set_enables(adapter, 943 cap & FLOW_CTRL_TX, 944 cap & FLOW_CTRL_RX); 945 } 946 947 static int lan743x_phy_init(struct lan743x_adapter *adapter) 948 { 949 return lan743x_phy_reset(adapter); 950 } 951 952 static void lan743x_phy_link_status_change(struct net_device *netdev) 953 { 954 struct lan743x_adapter *adapter = netdev_priv(netdev); 955 struct phy_device *phydev = netdev->phydev; 956 957 phy_print_status(phydev); 958 if (phydev->state == PHY_RUNNING) { 959 struct ethtool_link_ksettings ksettings; 960 int remote_advertisement = 0; 961 int local_advertisement = 0; 962 963 memset(&ksettings, 0, sizeof(ksettings)); 964 phy_ethtool_get_link_ksettings(netdev, &ksettings); 965 local_advertisement = phy_read(phydev, MII_ADVERTISE); 966 if (local_advertisement < 0) 967 return; 968 969 remote_advertisement = phy_read(phydev, MII_LPA); 970 if (remote_advertisement < 0) 971 return; 972 973 lan743x_phy_update_flowcontrol(adapter, 974 ksettings.base.duplex, 975 local_advertisement, 976 remote_advertisement); 977 lan743x_ptp_update_latency(adapter, ksettings.base.speed); 978 } 979 } 980 981 static void lan743x_phy_close(struct lan743x_adapter *adapter) 982 { 983 struct net_device *netdev = adapter->netdev; 984 985 phy_stop(netdev->phydev); 986 phy_disconnect(netdev->phydev); 987 netdev->phydev = NULL; 988 } 989 990 static int lan743x_phy_open(struct lan743x_adapter *adapter) 991 { 992 struct lan743x_phy *phy = &adapter->phy; 993 struct phy_device *phydev; 994 struct net_device *netdev; 995 int ret = -EIO; 996 997 netdev = adapter->netdev; 998 phydev = phy_find_first(adapter->mdiobus); 999 if (!phydev) 1000 goto return_error; 1001 1002 ret = phy_connect_direct(netdev, phydev, 1003 lan743x_phy_link_status_change, 1004 PHY_INTERFACE_MODE_GMII); 1005 if (ret) 1006 goto return_error; 1007 1008 /* MAC doesn't support 1000T Half */ 1009 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); 1010 1011 /* support both flow controls */ 1012 phy_support_asym_pause(phydev); 1013 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); 1014 phy->fc_autoneg = phydev->autoneg; 1015 1016 phy_start(phydev); 1017 phy_start_aneg(phydev); 1018 return 0; 1019 1020 return_error: 1021 return ret; 1022 } 1023 1024 static void lan743x_rfe_open(struct lan743x_adapter *adapter) 1025 { 1026 lan743x_csr_write(adapter, RFE_RSS_CFG, 1027 RFE_RSS_CFG_UDP_IPV6_EX_ | 1028 RFE_RSS_CFG_TCP_IPV6_EX_ | 1029 RFE_RSS_CFG_IPV6_EX_ | 1030 RFE_RSS_CFG_UDP_IPV6_ | 1031 RFE_RSS_CFG_TCP_IPV6_ | 1032 RFE_RSS_CFG_IPV6_ | 1033 RFE_RSS_CFG_UDP_IPV4_ | 1034 RFE_RSS_CFG_TCP_IPV4_ | 1035 RFE_RSS_CFG_IPV4_ | 1036 RFE_RSS_CFG_VALID_HASH_BITS_ | 1037 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ | 1038 RFE_RSS_CFG_RSS_HASH_STORE_ | 1039 RFE_RSS_CFG_RSS_ENABLE_); 1040 } 1041 1042 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter) 1043 { 1044 u8 *mac_addr; 1045 u32 mac_addr_hi = 0; 1046 u32 mac_addr_lo = 0; 1047 1048 /* Add mac address to perfect Filter */ 1049 mac_addr = adapter->mac_address; 1050 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) | 1051 (((u32)(mac_addr[1])) << 8) | 1052 (((u32)(mac_addr[2])) << 16) | 1053 (((u32)(mac_addr[3])) << 24)); 1054 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) | 1055 (((u32)(mac_addr[5])) << 8)); 1056 1057 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo); 1058 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0), 1059 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_); 1060 } 1061 1062 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter) 1063 { 1064 struct net_device *netdev = adapter->netdev; 1065 u32 hash_table[DP_SEL_VHF_HASH_LEN]; 1066 u32 rfctl; 1067 u32 data; 1068 1069 rfctl = lan743x_csr_read(adapter, RFE_CTL); 1070 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ | 1071 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); 1072 rfctl |= RFE_CTL_AB_; 1073 if (netdev->flags & IFF_PROMISC) { 1074 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_; 1075 } else { 1076 if (netdev->flags & IFF_ALLMULTI) 1077 rfctl |= RFE_CTL_AM_; 1078 } 1079 1080 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32)); 1081 if (netdev_mc_count(netdev)) { 1082 struct netdev_hw_addr *ha; 1083 int i; 1084 1085 rfctl |= RFE_CTL_DA_PERFECT_; 1086 i = 1; 1087 netdev_for_each_mc_addr(ha, netdev) { 1088 /* set first 32 into Perfect Filter */ 1089 if (i < 33) { 1090 lan743x_csr_write(adapter, 1091 RFE_ADDR_FILT_HI(i), 0); 1092 data = ha->addr[3]; 1093 data = ha->addr[2] | (data << 8); 1094 data = ha->addr[1] | (data << 8); 1095 data = ha->addr[0] | (data << 8); 1096 lan743x_csr_write(adapter, 1097 RFE_ADDR_FILT_LO(i), data); 1098 data = ha->addr[5]; 1099 data = ha->addr[4] | (data << 8); 1100 data |= RFE_ADDR_FILT_HI_VALID_; 1101 lan743x_csr_write(adapter, 1102 RFE_ADDR_FILT_HI(i), data); 1103 } else { 1104 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >> 1105 23) & 0x1FF; 1106 hash_table[bitnum / 32] |= (1 << (bitnum % 32)); 1107 rfctl |= RFE_CTL_MCAST_HASH_; 1108 } 1109 i++; 1110 } 1111 } 1112 1113 lan743x_dp_write(adapter, DP_SEL_RFE_RAM, 1114 DP_SEL_VHF_VLAN_LEN, 1115 DP_SEL_VHF_HASH_LEN, hash_table); 1116 lan743x_csr_write(adapter, RFE_CTL, rfctl); 1117 } 1118 1119 static int lan743x_dmac_init(struct lan743x_adapter *adapter) 1120 { 1121 u32 data = 0; 1122 1123 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_); 1124 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_, 1125 0, 1000, 20000, 100); 1126 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) { 1127 case DMA_DESCRIPTOR_SPACING_16: 1128 data = DMAC_CFG_MAX_DSPACE_16_; 1129 break; 1130 case DMA_DESCRIPTOR_SPACING_32: 1131 data = DMAC_CFG_MAX_DSPACE_32_; 1132 break; 1133 case DMA_DESCRIPTOR_SPACING_64: 1134 data = DMAC_CFG_MAX_DSPACE_64_; 1135 break; 1136 case DMA_DESCRIPTOR_SPACING_128: 1137 data = DMAC_CFG_MAX_DSPACE_128_; 1138 break; 1139 default: 1140 return -EPERM; 1141 } 1142 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1143 data |= DMAC_CFG_COAL_EN_; 1144 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_; 1145 data |= DMAC_CFG_MAX_READ_REQ_SET_(6); 1146 lan743x_csr_write(adapter, DMAC_CFG, data); 1147 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1); 1148 data |= DMAC_COAL_CFG_TIMER_TX_START_; 1149 data |= DMAC_COAL_CFG_FLUSH_INTS_; 1150 data |= DMAC_COAL_CFG_INT_EXIT_COAL_; 1151 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_; 1152 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A); 1153 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C); 1154 lan743x_csr_write(adapter, DMAC_COAL_CFG, data); 1155 data = DMAC_OBFF_TX_THRES_SET_(0x08); 1156 data |= DMAC_OBFF_RX_THRES_SET_(0x0A); 1157 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data); 1158 return 0; 1159 } 1160 1161 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter, 1162 int tx_channel) 1163 { 1164 u32 dmac_cmd = 0; 1165 1166 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1167 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1168 DMAC_CMD_START_T_(tx_channel)), 1169 (dmac_cmd & 1170 DMAC_CMD_STOP_T_(tx_channel))); 1171 } 1172 1173 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter, 1174 int tx_channel) 1175 { 1176 int timeout = 100; 1177 int result = 0; 1178 1179 while (timeout && 1180 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) == 1181 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1182 usleep_range(1000, 20000); 1183 timeout--; 1184 } 1185 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1186 result = -ENODEV; 1187 return result; 1188 } 1189 1190 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter, 1191 int rx_channel) 1192 { 1193 u32 dmac_cmd = 0; 1194 1195 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1196 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1197 DMAC_CMD_START_R_(rx_channel)), 1198 (dmac_cmd & 1199 DMAC_CMD_STOP_R_(rx_channel))); 1200 } 1201 1202 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter, 1203 int rx_channel) 1204 { 1205 int timeout = 100; 1206 int result = 0; 1207 1208 while (timeout && 1209 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) == 1210 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1211 usleep_range(1000, 20000); 1212 timeout--; 1213 } 1214 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1215 result = -ENODEV; 1216 return result; 1217 } 1218 1219 static void lan743x_tx_release_desc(struct lan743x_tx *tx, 1220 int descriptor_index, bool cleanup) 1221 { 1222 struct lan743x_tx_buffer_info *buffer_info = NULL; 1223 struct lan743x_tx_descriptor *descriptor = NULL; 1224 u32 descriptor_type = 0; 1225 bool ignore_sync; 1226 1227 descriptor = &tx->ring_cpu_ptr[descriptor_index]; 1228 buffer_info = &tx->buffer_info[descriptor_index]; 1229 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE)) 1230 goto done; 1231 1232 descriptor_type = (descriptor->data0) & 1233 TX_DESC_DATA0_DTYPE_MASK_; 1234 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_) 1235 goto clean_up_data_descriptor; 1236 else 1237 goto clear_active; 1238 1239 clean_up_data_descriptor: 1240 if (buffer_info->dma_ptr) { 1241 if (buffer_info->flags & 1242 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) { 1243 dma_unmap_page(&tx->adapter->pdev->dev, 1244 buffer_info->dma_ptr, 1245 buffer_info->buffer_length, 1246 DMA_TO_DEVICE); 1247 } else { 1248 dma_unmap_single(&tx->adapter->pdev->dev, 1249 buffer_info->dma_ptr, 1250 buffer_info->buffer_length, 1251 DMA_TO_DEVICE); 1252 } 1253 buffer_info->dma_ptr = 0; 1254 buffer_info->buffer_length = 0; 1255 } 1256 if (!buffer_info->skb) 1257 goto clear_active; 1258 1259 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) { 1260 dev_kfree_skb(buffer_info->skb); 1261 goto clear_skb; 1262 } 1263 1264 if (cleanup) { 1265 lan743x_ptp_unrequest_tx_timestamp(tx->adapter); 1266 dev_kfree_skb(buffer_info->skb); 1267 } else { 1268 ignore_sync = (buffer_info->flags & 1269 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0; 1270 lan743x_ptp_tx_timestamp_skb(tx->adapter, 1271 buffer_info->skb, ignore_sync); 1272 } 1273 1274 clear_skb: 1275 buffer_info->skb = NULL; 1276 1277 clear_active: 1278 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE; 1279 1280 done: 1281 memset(buffer_info, 0, sizeof(*buffer_info)); 1282 memset(descriptor, 0, sizeof(*descriptor)); 1283 } 1284 1285 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index) 1286 { 1287 return ((++index) % tx->ring_size); 1288 } 1289 1290 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx) 1291 { 1292 while ((*tx->head_cpu_ptr) != (tx->last_head)) { 1293 lan743x_tx_release_desc(tx, tx->last_head, false); 1294 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1295 } 1296 } 1297 1298 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx) 1299 { 1300 u32 original_head = 0; 1301 1302 original_head = tx->last_head; 1303 do { 1304 lan743x_tx_release_desc(tx, tx->last_head, true); 1305 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1306 } while (tx->last_head != original_head); 1307 memset(tx->ring_cpu_ptr, 0, 1308 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size)); 1309 memset(tx->buffer_info, 0, 1310 sizeof(*tx->buffer_info) * (tx->ring_size)); 1311 } 1312 1313 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx, 1314 struct sk_buff *skb) 1315 { 1316 int result = 1; /* 1 for the main skb buffer */ 1317 int nr_frags = 0; 1318 1319 if (skb_is_gso(skb)) 1320 result++; /* requires an extension descriptor */ 1321 nr_frags = skb_shinfo(skb)->nr_frags; 1322 result += nr_frags; /* 1 for each fragment buffer */ 1323 return result; 1324 } 1325 1326 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx) 1327 { 1328 int last_head = tx->last_head; 1329 int last_tail = tx->last_tail; 1330 1331 if (last_tail >= last_head) 1332 return tx->ring_size - last_tail + last_head - 1; 1333 else 1334 return last_head - last_tail - 1; 1335 } 1336 1337 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx, 1338 bool enable_timestamping, 1339 bool enable_onestep_sync) 1340 { 1341 if (enable_timestamping) 1342 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED; 1343 else 1344 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED; 1345 if (enable_onestep_sync) 1346 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC; 1347 else 1348 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC; 1349 } 1350 1351 static int lan743x_tx_frame_start(struct lan743x_tx *tx, 1352 unsigned char *first_buffer, 1353 unsigned int first_buffer_length, 1354 unsigned int frame_length, 1355 bool time_stamp, 1356 bool check_sum) 1357 { 1358 /* called only from within lan743x_tx_xmit_frame. 1359 * assuming tx->ring_lock has already been acquired. 1360 */ 1361 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1362 struct lan743x_tx_buffer_info *buffer_info = NULL; 1363 struct lan743x_adapter *adapter = tx->adapter; 1364 struct device *dev = &adapter->pdev->dev; 1365 dma_addr_t dma_ptr; 1366 1367 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS; 1368 tx->frame_first = tx->last_tail; 1369 tx->frame_tail = tx->frame_first; 1370 1371 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1372 buffer_info = &tx->buffer_info[tx->frame_tail]; 1373 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length, 1374 DMA_TO_DEVICE); 1375 if (dma_mapping_error(dev, dma_ptr)) 1376 return -ENOMEM; 1377 1378 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1379 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1380 tx_descriptor->data3 = (frame_length << 16) & 1381 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1382 1383 buffer_info->skb = NULL; 1384 buffer_info->dma_ptr = dma_ptr; 1385 buffer_info->buffer_length = first_buffer_length; 1386 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1387 1388 tx->frame_data0 = (first_buffer_length & 1389 TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1390 TX_DESC_DATA0_DTYPE_DATA_ | 1391 TX_DESC_DATA0_FS_ | 1392 TX_DESC_DATA0_FCS_; 1393 if (time_stamp) 1394 tx->frame_data0 |= TX_DESC_DATA0_TSE_; 1395 1396 if (check_sum) 1397 tx->frame_data0 |= TX_DESC_DATA0_ICE_ | 1398 TX_DESC_DATA0_IPE_ | 1399 TX_DESC_DATA0_TPE_; 1400 1401 /* data0 will be programmed in one of other frame assembler functions */ 1402 return 0; 1403 } 1404 1405 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx, 1406 unsigned int frame_length) 1407 { 1408 /* called only from within lan743x_tx_xmit_frame. 1409 * assuming tx->ring_lock has already been acquired. 1410 */ 1411 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1412 struct lan743x_tx_buffer_info *buffer_info = NULL; 1413 1414 /* wrap up previous descriptor */ 1415 tx->frame_data0 |= TX_DESC_DATA0_EXT_; 1416 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1417 tx_descriptor->data0 = tx->frame_data0; 1418 1419 /* move to next descriptor */ 1420 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1421 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1422 buffer_info = &tx->buffer_info[tx->frame_tail]; 1423 1424 /* add extension descriptor */ 1425 tx_descriptor->data1 = 0; 1426 tx_descriptor->data2 = 0; 1427 tx_descriptor->data3 = 0; 1428 1429 buffer_info->skb = NULL; 1430 buffer_info->dma_ptr = 0; 1431 buffer_info->buffer_length = 0; 1432 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1433 1434 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) | 1435 TX_DESC_DATA0_DTYPE_EXT_ | 1436 TX_DESC_DATA0_EXT_LSO_; 1437 1438 /* data0 will be programmed in one of other frame assembler functions */ 1439 } 1440 1441 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx, 1442 const struct skb_frag_struct *fragment, 1443 unsigned int frame_length) 1444 { 1445 /* called only from within lan743x_tx_xmit_frame 1446 * assuming tx->ring_lock has already been acquired 1447 */ 1448 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1449 struct lan743x_tx_buffer_info *buffer_info = NULL; 1450 struct lan743x_adapter *adapter = tx->adapter; 1451 struct device *dev = &adapter->pdev->dev; 1452 unsigned int fragment_length = 0; 1453 dma_addr_t dma_ptr; 1454 1455 fragment_length = skb_frag_size(fragment); 1456 if (!fragment_length) 1457 return 0; 1458 1459 /* wrap up previous descriptor */ 1460 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1461 tx_descriptor->data0 = tx->frame_data0; 1462 1463 /* move to next descriptor */ 1464 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1465 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1466 buffer_info = &tx->buffer_info[tx->frame_tail]; 1467 dma_ptr = skb_frag_dma_map(dev, fragment, 1468 0, fragment_length, 1469 DMA_TO_DEVICE); 1470 if (dma_mapping_error(dev, dma_ptr)) { 1471 int desc_index; 1472 1473 /* cleanup all previously setup descriptors */ 1474 desc_index = tx->frame_first; 1475 while (desc_index != tx->frame_tail) { 1476 lan743x_tx_release_desc(tx, desc_index, true); 1477 desc_index = lan743x_tx_next_index(tx, desc_index); 1478 } 1479 dma_wmb(); 1480 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1481 tx->frame_first = 0; 1482 tx->frame_data0 = 0; 1483 tx->frame_tail = 0; 1484 return -ENOMEM; 1485 } 1486 1487 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1488 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1489 tx_descriptor->data3 = (frame_length << 16) & 1490 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1491 1492 buffer_info->skb = NULL; 1493 buffer_info->dma_ptr = dma_ptr; 1494 buffer_info->buffer_length = fragment_length; 1495 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1496 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT; 1497 1498 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1499 TX_DESC_DATA0_DTYPE_DATA_ | 1500 TX_DESC_DATA0_FCS_; 1501 1502 /* data0 will be programmed in one of other frame assembler functions */ 1503 return 0; 1504 } 1505 1506 static void lan743x_tx_frame_end(struct lan743x_tx *tx, 1507 struct sk_buff *skb, 1508 bool time_stamp, 1509 bool ignore_sync) 1510 { 1511 /* called only from within lan743x_tx_xmit_frame 1512 * assuming tx->ring_lock has already been acquired 1513 */ 1514 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1515 struct lan743x_tx_buffer_info *buffer_info = NULL; 1516 struct lan743x_adapter *adapter = tx->adapter; 1517 u32 tx_tail_flags = 0; 1518 1519 /* wrap up previous descriptor */ 1520 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1521 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1522 1523 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1524 buffer_info = &tx->buffer_info[tx->frame_tail]; 1525 buffer_info->skb = skb; 1526 if (time_stamp) 1527 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED; 1528 if (ignore_sync) 1529 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC; 1530 1531 tx_descriptor->data0 = tx->frame_data0; 1532 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1533 tx->last_tail = tx->frame_tail; 1534 1535 dma_wmb(); 1536 1537 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 1538 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_; 1539 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) 1540 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ | 1541 TX_TAIL_SET_TOP_INT_EN_; 1542 1543 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1544 tx_tail_flags | tx->frame_tail); 1545 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1546 } 1547 1548 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx, 1549 struct sk_buff *skb) 1550 { 1551 int required_number_of_descriptors = 0; 1552 unsigned int start_frame_length = 0; 1553 unsigned int frame_length = 0; 1554 unsigned int head_length = 0; 1555 unsigned long irq_flags = 0; 1556 bool do_timestamp = false; 1557 bool ignore_sync = false; 1558 int nr_frags = 0; 1559 bool gso = false; 1560 int j; 1561 1562 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb); 1563 1564 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1565 if (required_number_of_descriptors > 1566 lan743x_tx_get_avail_desc(tx)) { 1567 if (required_number_of_descriptors > (tx->ring_size - 1)) { 1568 dev_kfree_skb(skb); 1569 } else { 1570 /* save to overflow buffer */ 1571 tx->overflow_skb = skb; 1572 netif_stop_queue(tx->adapter->netdev); 1573 } 1574 goto unlock; 1575 } 1576 1577 /* space available, transmit skb */ 1578 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 1579 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) && 1580 (lan743x_ptp_request_tx_timestamp(tx->adapter))) { 1581 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 1582 do_timestamp = true; 1583 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC) 1584 ignore_sync = true; 1585 } 1586 head_length = skb_headlen(skb); 1587 frame_length = skb_pagelen(skb); 1588 nr_frags = skb_shinfo(skb)->nr_frags; 1589 start_frame_length = frame_length; 1590 gso = skb_is_gso(skb); 1591 if (gso) { 1592 start_frame_length = max(skb_shinfo(skb)->gso_size, 1593 (unsigned short)8); 1594 } 1595 1596 if (lan743x_tx_frame_start(tx, 1597 skb->data, head_length, 1598 start_frame_length, 1599 do_timestamp, 1600 skb->ip_summed == CHECKSUM_PARTIAL)) { 1601 dev_kfree_skb(skb); 1602 goto unlock; 1603 } 1604 1605 if (gso) 1606 lan743x_tx_frame_add_lso(tx, frame_length); 1607 1608 if (nr_frags <= 0) 1609 goto finish; 1610 1611 for (j = 0; j < nr_frags; j++) { 1612 const struct skb_frag_struct *frag; 1613 1614 frag = &(skb_shinfo(skb)->frags[j]); 1615 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) { 1616 /* upon error no need to call 1617 * lan743x_tx_frame_end 1618 * frame assembler clean up was performed inside 1619 * lan743x_tx_frame_add_fragment 1620 */ 1621 dev_kfree_skb(skb); 1622 goto unlock; 1623 } 1624 } 1625 1626 finish: 1627 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync); 1628 1629 unlock: 1630 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1631 return NETDEV_TX_OK; 1632 } 1633 1634 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight) 1635 { 1636 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi); 1637 struct lan743x_adapter *adapter = tx->adapter; 1638 bool start_transmitter = false; 1639 unsigned long irq_flags = 0; 1640 u32 ioc_bit = 0; 1641 u32 int_sts = 0; 1642 1643 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 1644 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 1645 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) 1646 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit); 1647 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1648 1649 /* clean up tx ring */ 1650 lan743x_tx_release_completed_descriptors(tx); 1651 if (netif_queue_stopped(adapter->netdev)) { 1652 if (tx->overflow_skb) { 1653 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <= 1654 lan743x_tx_get_avail_desc(tx)) 1655 start_transmitter = true; 1656 } else { 1657 netif_wake_queue(adapter->netdev); 1658 } 1659 } 1660 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1661 1662 if (start_transmitter) { 1663 /* space is now available, transmit overflow skb */ 1664 lan743x_tx_xmit_frame(tx, tx->overflow_skb); 1665 tx->overflow_skb = NULL; 1666 netif_wake_queue(adapter->netdev); 1667 } 1668 1669 if (!napi_complete(napi)) 1670 goto done; 1671 1672 /* enable isr */ 1673 lan743x_csr_write(adapter, INT_EN_SET, 1674 INT_BIT_DMA_TX_(tx->channel_number)); 1675 lan743x_csr_read(adapter, INT_STS); 1676 1677 done: 1678 return 0; 1679 } 1680 1681 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx) 1682 { 1683 if (tx->head_cpu_ptr) { 1684 pci_free_consistent(tx->adapter->pdev, 1685 sizeof(*tx->head_cpu_ptr), 1686 (void *)(tx->head_cpu_ptr), 1687 tx->head_dma_ptr); 1688 tx->head_cpu_ptr = NULL; 1689 tx->head_dma_ptr = 0; 1690 } 1691 kfree(tx->buffer_info); 1692 tx->buffer_info = NULL; 1693 1694 if (tx->ring_cpu_ptr) { 1695 pci_free_consistent(tx->adapter->pdev, 1696 tx->ring_allocation_size, 1697 tx->ring_cpu_ptr, 1698 tx->ring_dma_ptr); 1699 tx->ring_allocation_size = 0; 1700 tx->ring_cpu_ptr = NULL; 1701 tx->ring_dma_ptr = 0; 1702 } 1703 tx->ring_size = 0; 1704 } 1705 1706 static int lan743x_tx_ring_init(struct lan743x_tx *tx) 1707 { 1708 size_t ring_allocation_size = 0; 1709 void *cpu_ptr = NULL; 1710 dma_addr_t dma_ptr; 1711 int ret = -ENOMEM; 1712 1713 tx->ring_size = LAN743X_TX_RING_SIZE; 1714 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) { 1715 ret = -EINVAL; 1716 goto cleanup; 1717 } 1718 ring_allocation_size = ALIGN(tx->ring_size * 1719 sizeof(struct lan743x_tx_descriptor), 1720 PAGE_SIZE); 1721 dma_ptr = 0; 1722 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1723 ring_allocation_size, &dma_ptr); 1724 if (!cpu_ptr) { 1725 ret = -ENOMEM; 1726 goto cleanup; 1727 } 1728 1729 tx->ring_allocation_size = ring_allocation_size; 1730 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr; 1731 tx->ring_dma_ptr = dma_ptr; 1732 1733 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL); 1734 if (!cpu_ptr) { 1735 ret = -ENOMEM; 1736 goto cleanup; 1737 } 1738 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr; 1739 dma_ptr = 0; 1740 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1741 sizeof(*tx->head_cpu_ptr), &dma_ptr); 1742 if (!cpu_ptr) { 1743 ret = -ENOMEM; 1744 goto cleanup; 1745 } 1746 1747 tx->head_cpu_ptr = cpu_ptr; 1748 tx->head_dma_ptr = dma_ptr; 1749 if (tx->head_dma_ptr & 0x3) { 1750 ret = -ENOMEM; 1751 goto cleanup; 1752 } 1753 1754 return 0; 1755 1756 cleanup: 1757 lan743x_tx_ring_cleanup(tx); 1758 return ret; 1759 } 1760 1761 static void lan743x_tx_close(struct lan743x_tx *tx) 1762 { 1763 struct lan743x_adapter *adapter = tx->adapter; 1764 1765 lan743x_csr_write(adapter, 1766 DMAC_CMD, 1767 DMAC_CMD_STOP_T_(tx->channel_number)); 1768 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number); 1769 1770 lan743x_csr_write(adapter, 1771 DMAC_INT_EN_CLR, 1772 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1773 lan743x_csr_write(adapter, INT_EN_CLR, 1774 INT_BIT_DMA_TX_(tx->channel_number)); 1775 napi_disable(&tx->napi); 1776 netif_napi_del(&tx->napi); 1777 1778 lan743x_csr_write(adapter, FCT_TX_CTL, 1779 FCT_TX_CTL_DIS_(tx->channel_number)); 1780 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1781 FCT_TX_CTL_EN_(tx->channel_number), 1782 0, 1000, 20000, 100); 1783 1784 lan743x_tx_release_all_descriptors(tx); 1785 1786 if (tx->overflow_skb) { 1787 dev_kfree_skb(tx->overflow_skb); 1788 tx->overflow_skb = NULL; 1789 } 1790 1791 lan743x_tx_ring_cleanup(tx); 1792 } 1793 1794 static int lan743x_tx_open(struct lan743x_tx *tx) 1795 { 1796 struct lan743x_adapter *adapter = NULL; 1797 u32 data = 0; 1798 int ret; 1799 1800 adapter = tx->adapter; 1801 ret = lan743x_tx_ring_init(tx); 1802 if (ret) 1803 return ret; 1804 1805 /* initialize fifo */ 1806 lan743x_csr_write(adapter, FCT_TX_CTL, 1807 FCT_TX_CTL_RESET_(tx->channel_number)); 1808 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1809 FCT_TX_CTL_RESET_(tx->channel_number), 1810 0, 1000, 20000, 100); 1811 1812 /* enable fifo */ 1813 lan743x_csr_write(adapter, FCT_TX_CTL, 1814 FCT_TX_CTL_EN_(tx->channel_number)); 1815 1816 /* reset tx channel */ 1817 lan743x_csr_write(adapter, DMAC_CMD, 1818 DMAC_CMD_TX_SWR_(tx->channel_number)); 1819 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 1820 DMAC_CMD_TX_SWR_(tx->channel_number), 1821 0, 1000, 20000, 100); 1822 1823 /* Write TX_BASE_ADDR */ 1824 lan743x_csr_write(adapter, 1825 TX_BASE_ADDRH(tx->channel_number), 1826 DMA_ADDR_HIGH32(tx->ring_dma_ptr)); 1827 lan743x_csr_write(adapter, 1828 TX_BASE_ADDRL(tx->channel_number), 1829 DMA_ADDR_LOW32(tx->ring_dma_ptr)); 1830 1831 /* Write TX_CFG_B */ 1832 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number)); 1833 data &= ~TX_CFG_B_TX_RING_LEN_MASK_; 1834 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_); 1835 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1836 data |= TX_CFG_B_TDMABL_512_; 1837 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data); 1838 1839 /* Write TX_CFG_A */ 1840 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_; 1841 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 1842 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_; 1843 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10); 1844 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04); 1845 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07); 1846 } 1847 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data); 1848 1849 /* Write TX_HEAD_WRITEBACK_ADDR */ 1850 lan743x_csr_write(adapter, 1851 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number), 1852 DMA_ADDR_HIGH32(tx->head_dma_ptr)); 1853 lan743x_csr_write(adapter, 1854 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number), 1855 DMA_ADDR_LOW32(tx->head_dma_ptr)); 1856 1857 /* set last head */ 1858 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number)); 1859 1860 /* write TX_TAIL */ 1861 tx->last_tail = 0; 1862 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1863 (u32)(tx->last_tail)); 1864 tx->vector_flags = lan743x_intr_get_vector_flags(adapter, 1865 INT_BIT_DMA_TX_ 1866 (tx->channel_number)); 1867 netif_tx_napi_add(adapter->netdev, 1868 &tx->napi, lan743x_tx_napi_poll, 1869 tx->ring_size - 1); 1870 napi_enable(&tx->napi); 1871 1872 data = 0; 1873 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 1874 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_; 1875 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 1876 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_; 1877 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 1878 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_; 1879 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 1880 data |= TX_CFG_C_TX_INT_EN_R2C_; 1881 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data); 1882 1883 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)) 1884 lan743x_csr_write(adapter, INT_EN_SET, 1885 INT_BIT_DMA_TX_(tx->channel_number)); 1886 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 1887 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1888 1889 /* start dmac channel */ 1890 lan743x_csr_write(adapter, DMAC_CMD, 1891 DMAC_CMD_START_T_(tx->channel_number)); 1892 return 0; 1893 } 1894 1895 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index) 1896 { 1897 return ((++index) % rx->ring_size); 1898 } 1899 1900 static int lan743x_rx_allocate_ring_element(struct lan743x_rx *rx, int index) 1901 { 1902 struct lan743x_rx_buffer_info *buffer_info; 1903 struct lan743x_rx_descriptor *descriptor; 1904 int length = 0; 1905 1906 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1907 descriptor = &rx->ring_cpu_ptr[index]; 1908 buffer_info = &rx->buffer_info[index]; 1909 buffer_info->skb = __netdev_alloc_skb(rx->adapter->netdev, 1910 length, 1911 GFP_ATOMIC | GFP_DMA); 1912 if (!(buffer_info->skb)) 1913 return -ENOMEM; 1914 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev, 1915 buffer_info->skb->data, 1916 length, 1917 DMA_FROM_DEVICE); 1918 if (dma_mapping_error(&rx->adapter->pdev->dev, 1919 buffer_info->dma_ptr)) { 1920 buffer_info->dma_ptr = 0; 1921 return -ENOMEM; 1922 } 1923 1924 buffer_info->buffer_length = length; 1925 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1926 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1927 descriptor->data3 = 0; 1928 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1929 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1930 skb_reserve(buffer_info->skb, RX_HEAD_PADDING); 1931 1932 return 0; 1933 } 1934 1935 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index) 1936 { 1937 struct lan743x_rx_buffer_info *buffer_info; 1938 struct lan743x_rx_descriptor *descriptor; 1939 1940 descriptor = &rx->ring_cpu_ptr[index]; 1941 buffer_info = &rx->buffer_info[index]; 1942 1943 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1944 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1945 descriptor->data3 = 0; 1946 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1947 ((buffer_info->buffer_length) & 1948 RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1949 } 1950 1951 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index) 1952 { 1953 struct lan743x_rx_buffer_info *buffer_info; 1954 struct lan743x_rx_descriptor *descriptor; 1955 1956 descriptor = &rx->ring_cpu_ptr[index]; 1957 buffer_info = &rx->buffer_info[index]; 1958 1959 memset(descriptor, 0, sizeof(*descriptor)); 1960 1961 if (buffer_info->dma_ptr) { 1962 dma_unmap_single(&rx->adapter->pdev->dev, 1963 buffer_info->dma_ptr, 1964 buffer_info->buffer_length, 1965 DMA_FROM_DEVICE); 1966 buffer_info->dma_ptr = 0; 1967 } 1968 1969 if (buffer_info->skb) { 1970 dev_kfree_skb(buffer_info->skb); 1971 buffer_info->skb = NULL; 1972 } 1973 1974 memset(buffer_info, 0, sizeof(*buffer_info)); 1975 } 1976 1977 static int lan743x_rx_process_packet(struct lan743x_rx *rx) 1978 { 1979 struct skb_shared_hwtstamps *hwtstamps = NULL; 1980 int result = RX_PROCESS_RESULT_NOTHING_TO_DO; 1981 struct lan743x_rx_buffer_info *buffer_info; 1982 struct lan743x_rx_descriptor *descriptor; 1983 int current_head_index = -1; 1984 int extension_index = -1; 1985 int first_index = -1; 1986 int last_index = -1; 1987 1988 current_head_index = *rx->head_cpu_ptr; 1989 if (current_head_index < 0 || current_head_index >= rx->ring_size) 1990 goto done; 1991 1992 if (rx->last_head < 0 || rx->last_head >= rx->ring_size) 1993 goto done; 1994 1995 if (rx->last_head != current_head_index) { 1996 descriptor = &rx->ring_cpu_ptr[rx->last_head]; 1997 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 1998 goto done; 1999 2000 if (!(descriptor->data0 & RX_DESC_DATA0_FS_)) 2001 goto done; 2002 2003 first_index = rx->last_head; 2004 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2005 last_index = rx->last_head; 2006 } else { 2007 int index; 2008 2009 index = lan743x_rx_next_index(rx, first_index); 2010 while (index != current_head_index) { 2011 descriptor = &rx->ring_cpu_ptr[index]; 2012 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2013 goto done; 2014 2015 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2016 last_index = index; 2017 break; 2018 } 2019 index = lan743x_rx_next_index(rx, index); 2020 } 2021 } 2022 if (last_index >= 0) { 2023 descriptor = &rx->ring_cpu_ptr[last_index]; 2024 if (descriptor->data0 & RX_DESC_DATA0_EXT_) { 2025 /* extension is expected to follow */ 2026 int index = lan743x_rx_next_index(rx, 2027 last_index); 2028 if (index != current_head_index) { 2029 descriptor = &rx->ring_cpu_ptr[index]; 2030 if (descriptor->data0 & 2031 RX_DESC_DATA0_OWN_) { 2032 goto done; 2033 } 2034 if (descriptor->data0 & 2035 RX_DESC_DATA0_EXT_) { 2036 extension_index = index; 2037 } else { 2038 goto done; 2039 } 2040 } else { 2041 /* extension is not yet available */ 2042 /* prevent processing of this packet */ 2043 first_index = -1; 2044 last_index = -1; 2045 } 2046 } 2047 } 2048 } 2049 if (first_index >= 0 && last_index >= 0) { 2050 int real_last_index = last_index; 2051 struct sk_buff *skb = NULL; 2052 u32 ts_sec = 0; 2053 u32 ts_nsec = 0; 2054 2055 /* packet is available */ 2056 if (first_index == last_index) { 2057 /* single buffer packet */ 2058 int packet_length; 2059 2060 buffer_info = &rx->buffer_info[first_index]; 2061 skb = buffer_info->skb; 2062 descriptor = &rx->ring_cpu_ptr[first_index]; 2063 2064 /* unmap from dma */ 2065 if (buffer_info->dma_ptr) { 2066 dma_unmap_single(&rx->adapter->pdev->dev, 2067 buffer_info->dma_ptr, 2068 buffer_info->buffer_length, 2069 DMA_FROM_DEVICE); 2070 buffer_info->dma_ptr = 0; 2071 buffer_info->buffer_length = 0; 2072 } 2073 buffer_info->skb = NULL; 2074 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_ 2075 (descriptor->data0); 2076 skb_put(skb, packet_length - 4); 2077 skb->protocol = eth_type_trans(skb, 2078 rx->adapter->netdev); 2079 lan743x_rx_allocate_ring_element(rx, first_index); 2080 } else { 2081 int index = first_index; 2082 2083 /* multi buffer packet not supported */ 2084 /* this should not happen since 2085 * buffers are allocated to be at least jumbo size 2086 */ 2087 2088 /* clean up buffers */ 2089 if (first_index <= last_index) { 2090 while ((index >= first_index) && 2091 (index <= last_index)) { 2092 lan743x_rx_release_ring_element(rx, 2093 index); 2094 lan743x_rx_allocate_ring_element(rx, 2095 index); 2096 index = lan743x_rx_next_index(rx, 2097 index); 2098 } 2099 } else { 2100 while ((index >= first_index) || 2101 (index <= last_index)) { 2102 lan743x_rx_release_ring_element(rx, 2103 index); 2104 lan743x_rx_allocate_ring_element(rx, 2105 index); 2106 index = lan743x_rx_next_index(rx, 2107 index); 2108 } 2109 } 2110 } 2111 2112 if (extension_index >= 0) { 2113 descriptor = &rx->ring_cpu_ptr[extension_index]; 2114 buffer_info = &rx->buffer_info[extension_index]; 2115 2116 ts_sec = descriptor->data1; 2117 ts_nsec = (descriptor->data2 & 2118 RX_DESC_DATA2_TS_NS_MASK_); 2119 lan743x_rx_reuse_ring_element(rx, extension_index); 2120 real_last_index = extension_index; 2121 } 2122 2123 if (!skb) { 2124 result = RX_PROCESS_RESULT_PACKET_DROPPED; 2125 goto move_forward; 2126 } 2127 2128 if (extension_index < 0) 2129 goto pass_packet_to_os; 2130 hwtstamps = skb_hwtstamps(skb); 2131 if (hwtstamps) 2132 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec); 2133 2134 pass_packet_to_os: 2135 /* pass packet to OS */ 2136 napi_gro_receive(&rx->napi, skb); 2137 result = RX_PROCESS_RESULT_PACKET_RECEIVED; 2138 2139 move_forward: 2140 /* push tail and head forward */ 2141 rx->last_tail = real_last_index; 2142 rx->last_head = lan743x_rx_next_index(rx, real_last_index); 2143 } 2144 done: 2145 return result; 2146 } 2147 2148 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight) 2149 { 2150 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi); 2151 struct lan743x_adapter *adapter = rx->adapter; 2152 u32 rx_tail_flags = 0; 2153 int count; 2154 2155 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) { 2156 /* clear int status bit before reading packet */ 2157 lan743x_csr_write(adapter, DMAC_INT_STS, 2158 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2159 } 2160 count = 0; 2161 while (count < weight) { 2162 int rx_process_result = -1; 2163 2164 rx_process_result = lan743x_rx_process_packet(rx); 2165 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) { 2166 count++; 2167 } else if (rx_process_result == 2168 RX_PROCESS_RESULT_NOTHING_TO_DO) { 2169 break; 2170 } else if (rx_process_result == 2171 RX_PROCESS_RESULT_PACKET_DROPPED) { 2172 continue; 2173 } 2174 } 2175 rx->frame_count += count; 2176 if (count == weight) 2177 goto done; 2178 2179 if (!napi_complete_done(napi, count)) 2180 goto done; 2181 2182 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 2183 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_; 2184 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) { 2185 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_; 2186 } else { 2187 lan743x_csr_write(adapter, INT_EN_SET, 2188 INT_BIT_DMA_RX_(rx->channel_number)); 2189 } 2190 2191 /* update RX_TAIL */ 2192 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2193 rx_tail_flags | rx->last_tail); 2194 done: 2195 return count; 2196 } 2197 2198 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx) 2199 { 2200 if (rx->buffer_info && rx->ring_cpu_ptr) { 2201 int index; 2202 2203 for (index = 0; index < rx->ring_size; index++) 2204 lan743x_rx_release_ring_element(rx, index); 2205 } 2206 2207 if (rx->head_cpu_ptr) { 2208 pci_free_consistent(rx->adapter->pdev, 2209 sizeof(*rx->head_cpu_ptr), 2210 rx->head_cpu_ptr, 2211 rx->head_dma_ptr); 2212 rx->head_cpu_ptr = NULL; 2213 rx->head_dma_ptr = 0; 2214 } 2215 2216 kfree(rx->buffer_info); 2217 rx->buffer_info = NULL; 2218 2219 if (rx->ring_cpu_ptr) { 2220 pci_free_consistent(rx->adapter->pdev, 2221 rx->ring_allocation_size, 2222 rx->ring_cpu_ptr, 2223 rx->ring_dma_ptr); 2224 rx->ring_allocation_size = 0; 2225 rx->ring_cpu_ptr = NULL; 2226 rx->ring_dma_ptr = 0; 2227 } 2228 2229 rx->ring_size = 0; 2230 rx->last_head = 0; 2231 } 2232 2233 static int lan743x_rx_ring_init(struct lan743x_rx *rx) 2234 { 2235 size_t ring_allocation_size = 0; 2236 dma_addr_t dma_ptr = 0; 2237 void *cpu_ptr = NULL; 2238 int ret = -ENOMEM; 2239 int index = 0; 2240 2241 rx->ring_size = LAN743X_RX_RING_SIZE; 2242 if (rx->ring_size <= 1) { 2243 ret = -EINVAL; 2244 goto cleanup; 2245 } 2246 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) { 2247 ret = -EINVAL; 2248 goto cleanup; 2249 } 2250 ring_allocation_size = ALIGN(rx->ring_size * 2251 sizeof(struct lan743x_rx_descriptor), 2252 PAGE_SIZE); 2253 dma_ptr = 0; 2254 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2255 ring_allocation_size, &dma_ptr); 2256 if (!cpu_ptr) { 2257 ret = -ENOMEM; 2258 goto cleanup; 2259 } 2260 rx->ring_allocation_size = ring_allocation_size; 2261 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr; 2262 rx->ring_dma_ptr = dma_ptr; 2263 2264 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info), 2265 GFP_KERNEL); 2266 if (!cpu_ptr) { 2267 ret = -ENOMEM; 2268 goto cleanup; 2269 } 2270 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr; 2271 dma_ptr = 0; 2272 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2273 sizeof(*rx->head_cpu_ptr), &dma_ptr); 2274 if (!cpu_ptr) { 2275 ret = -ENOMEM; 2276 goto cleanup; 2277 } 2278 2279 rx->head_cpu_ptr = cpu_ptr; 2280 rx->head_dma_ptr = dma_ptr; 2281 if (rx->head_dma_ptr & 0x3) { 2282 ret = -ENOMEM; 2283 goto cleanup; 2284 } 2285 2286 rx->last_head = 0; 2287 for (index = 0; index < rx->ring_size; index++) { 2288 ret = lan743x_rx_allocate_ring_element(rx, index); 2289 if (ret) 2290 goto cleanup; 2291 } 2292 return 0; 2293 2294 cleanup: 2295 lan743x_rx_ring_cleanup(rx); 2296 return ret; 2297 } 2298 2299 static void lan743x_rx_close(struct lan743x_rx *rx) 2300 { 2301 struct lan743x_adapter *adapter = rx->adapter; 2302 2303 lan743x_csr_write(adapter, FCT_RX_CTL, 2304 FCT_RX_CTL_DIS_(rx->channel_number)); 2305 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2306 FCT_RX_CTL_EN_(rx->channel_number), 2307 0, 1000, 20000, 100); 2308 2309 lan743x_csr_write(adapter, DMAC_CMD, 2310 DMAC_CMD_STOP_R_(rx->channel_number)); 2311 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number); 2312 2313 lan743x_csr_write(adapter, DMAC_INT_EN_CLR, 2314 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2315 lan743x_csr_write(adapter, INT_EN_CLR, 2316 INT_BIT_DMA_RX_(rx->channel_number)); 2317 napi_disable(&rx->napi); 2318 2319 netif_napi_del(&rx->napi); 2320 2321 lan743x_rx_ring_cleanup(rx); 2322 } 2323 2324 static int lan743x_rx_open(struct lan743x_rx *rx) 2325 { 2326 struct lan743x_adapter *adapter = rx->adapter; 2327 u32 data = 0; 2328 int ret; 2329 2330 rx->frame_count = 0; 2331 ret = lan743x_rx_ring_init(rx); 2332 if (ret) 2333 goto return_error; 2334 2335 netif_napi_add(adapter->netdev, 2336 &rx->napi, lan743x_rx_napi_poll, 2337 rx->ring_size - 1); 2338 2339 lan743x_csr_write(adapter, DMAC_CMD, 2340 DMAC_CMD_RX_SWR_(rx->channel_number)); 2341 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 2342 DMAC_CMD_RX_SWR_(rx->channel_number), 2343 0, 1000, 20000, 100); 2344 2345 /* set ring base address */ 2346 lan743x_csr_write(adapter, 2347 RX_BASE_ADDRH(rx->channel_number), 2348 DMA_ADDR_HIGH32(rx->ring_dma_ptr)); 2349 lan743x_csr_write(adapter, 2350 RX_BASE_ADDRL(rx->channel_number), 2351 DMA_ADDR_LOW32(rx->ring_dma_ptr)); 2352 2353 /* set rx write back address */ 2354 lan743x_csr_write(adapter, 2355 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number), 2356 DMA_ADDR_HIGH32(rx->head_dma_ptr)); 2357 lan743x_csr_write(adapter, 2358 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number), 2359 DMA_ADDR_LOW32(rx->head_dma_ptr)); 2360 data = RX_CFG_A_RX_HP_WB_EN_; 2361 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 2362 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ | 2363 RX_CFG_A_RX_WB_THRES_SET_(0x7) | 2364 RX_CFG_A_RX_PF_THRES_SET_(16) | 2365 RX_CFG_A_RX_PF_PRI_THRES_SET_(4)); 2366 } 2367 2368 /* set RX_CFG_A */ 2369 lan743x_csr_write(adapter, 2370 RX_CFG_A(rx->channel_number), data); 2371 2372 /* set RX_CFG_B */ 2373 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number)); 2374 data &= ~RX_CFG_B_RX_PAD_MASK_; 2375 if (!RX_HEAD_PADDING) 2376 data |= RX_CFG_B_RX_PAD_0_; 2377 else 2378 data |= RX_CFG_B_RX_PAD_2_; 2379 data &= ~RX_CFG_B_RX_RING_LEN_MASK_; 2380 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_); 2381 data |= RX_CFG_B_TS_ALL_RX_; 2382 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 2383 data |= RX_CFG_B_RDMABL_512_; 2384 2385 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data); 2386 rx->vector_flags = lan743x_intr_get_vector_flags(adapter, 2387 INT_BIT_DMA_RX_ 2388 (rx->channel_number)); 2389 2390 /* set RX_CFG_C */ 2391 data = 0; 2392 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 2393 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_; 2394 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 2395 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_; 2396 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 2397 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_; 2398 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 2399 data |= RX_CFG_C_RX_INT_EN_R2C_; 2400 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data); 2401 2402 rx->last_tail = ((u32)(rx->ring_size - 1)); 2403 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2404 rx->last_tail); 2405 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number)); 2406 if (rx->last_head) { 2407 ret = -EIO; 2408 goto napi_delete; 2409 } 2410 2411 napi_enable(&rx->napi); 2412 2413 lan743x_csr_write(adapter, INT_EN_SET, 2414 INT_BIT_DMA_RX_(rx->channel_number)); 2415 lan743x_csr_write(adapter, DMAC_INT_STS, 2416 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2417 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 2418 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2419 lan743x_csr_write(adapter, DMAC_CMD, 2420 DMAC_CMD_START_R_(rx->channel_number)); 2421 2422 /* initialize fifo */ 2423 lan743x_csr_write(adapter, FCT_RX_CTL, 2424 FCT_RX_CTL_RESET_(rx->channel_number)); 2425 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2426 FCT_RX_CTL_RESET_(rx->channel_number), 2427 0, 1000, 20000, 100); 2428 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number), 2429 FCT_FLOW_CTL_REQ_EN_ | 2430 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) | 2431 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA)); 2432 2433 /* enable fifo */ 2434 lan743x_csr_write(adapter, FCT_RX_CTL, 2435 FCT_RX_CTL_EN_(rx->channel_number)); 2436 return 0; 2437 2438 napi_delete: 2439 netif_napi_del(&rx->napi); 2440 lan743x_rx_ring_cleanup(rx); 2441 2442 return_error: 2443 return ret; 2444 } 2445 2446 static int lan743x_netdev_close(struct net_device *netdev) 2447 { 2448 struct lan743x_adapter *adapter = netdev_priv(netdev); 2449 int index; 2450 2451 lan743x_tx_close(&adapter->tx[0]); 2452 2453 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) 2454 lan743x_rx_close(&adapter->rx[index]); 2455 2456 lan743x_ptp_close(adapter); 2457 2458 lan743x_phy_close(adapter); 2459 2460 lan743x_mac_close(adapter); 2461 2462 lan743x_intr_close(adapter); 2463 2464 return 0; 2465 } 2466 2467 static int lan743x_netdev_open(struct net_device *netdev) 2468 { 2469 struct lan743x_adapter *adapter = netdev_priv(netdev); 2470 int index; 2471 int ret; 2472 2473 ret = lan743x_intr_open(adapter); 2474 if (ret) 2475 goto return_error; 2476 2477 ret = lan743x_mac_open(adapter); 2478 if (ret) 2479 goto close_intr; 2480 2481 ret = lan743x_phy_open(adapter); 2482 if (ret) 2483 goto close_mac; 2484 2485 ret = lan743x_ptp_open(adapter); 2486 if (ret) 2487 goto close_phy; 2488 2489 lan743x_rfe_open(adapter); 2490 2491 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2492 ret = lan743x_rx_open(&adapter->rx[index]); 2493 if (ret) 2494 goto close_rx; 2495 } 2496 2497 ret = lan743x_tx_open(&adapter->tx[0]); 2498 if (ret) 2499 goto close_rx; 2500 2501 return 0; 2502 2503 close_rx: 2504 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2505 if (adapter->rx[index].ring_cpu_ptr) 2506 lan743x_rx_close(&adapter->rx[index]); 2507 } 2508 lan743x_ptp_close(adapter); 2509 2510 close_phy: 2511 lan743x_phy_close(adapter); 2512 2513 close_mac: 2514 lan743x_mac_close(adapter); 2515 2516 close_intr: 2517 lan743x_intr_close(adapter); 2518 2519 return_error: 2520 netif_warn(adapter, ifup, adapter->netdev, 2521 "Error opening LAN743x\n"); 2522 return ret; 2523 } 2524 2525 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb, 2526 struct net_device *netdev) 2527 { 2528 struct lan743x_adapter *adapter = netdev_priv(netdev); 2529 2530 return lan743x_tx_xmit_frame(&adapter->tx[0], skb); 2531 } 2532 2533 static int lan743x_netdev_ioctl(struct net_device *netdev, 2534 struct ifreq *ifr, int cmd) 2535 { 2536 if (!netif_running(netdev)) 2537 return -EINVAL; 2538 if (cmd == SIOCSHWTSTAMP) 2539 return lan743x_ptp_ioctl(netdev, ifr, cmd); 2540 return phy_mii_ioctl(netdev->phydev, ifr, cmd); 2541 } 2542 2543 static void lan743x_netdev_set_multicast(struct net_device *netdev) 2544 { 2545 struct lan743x_adapter *adapter = netdev_priv(netdev); 2546 2547 lan743x_rfe_set_multicast(adapter); 2548 } 2549 2550 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu) 2551 { 2552 struct lan743x_adapter *adapter = netdev_priv(netdev); 2553 int ret = 0; 2554 2555 ret = lan743x_mac_set_mtu(adapter, new_mtu); 2556 if (!ret) 2557 netdev->mtu = new_mtu; 2558 return ret; 2559 } 2560 2561 static void lan743x_netdev_get_stats64(struct net_device *netdev, 2562 struct rtnl_link_stats64 *stats) 2563 { 2564 struct lan743x_adapter *adapter = netdev_priv(netdev); 2565 2566 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES); 2567 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES); 2568 stats->rx_bytes = lan743x_csr_read(adapter, 2569 STAT_RX_UNICAST_BYTE_COUNT) + 2570 lan743x_csr_read(adapter, 2571 STAT_RX_BROADCAST_BYTE_COUNT) + 2572 lan743x_csr_read(adapter, 2573 STAT_RX_MULTICAST_BYTE_COUNT); 2574 stats->tx_bytes = lan743x_csr_read(adapter, 2575 STAT_TX_UNICAST_BYTE_COUNT) + 2576 lan743x_csr_read(adapter, 2577 STAT_TX_BROADCAST_BYTE_COUNT) + 2578 lan743x_csr_read(adapter, 2579 STAT_TX_MULTICAST_BYTE_COUNT); 2580 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) + 2581 lan743x_csr_read(adapter, 2582 STAT_RX_ALIGNMENT_ERRORS) + 2583 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) + 2584 lan743x_csr_read(adapter, 2585 STAT_RX_UNDERSIZE_FRAME_ERRORS) + 2586 lan743x_csr_read(adapter, 2587 STAT_RX_OVERSIZE_FRAME_ERRORS); 2588 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) + 2589 lan743x_csr_read(adapter, 2590 STAT_TX_EXCESS_DEFERRAL_ERRORS) + 2591 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS); 2592 stats->rx_dropped = lan743x_csr_read(adapter, 2593 STAT_RX_DROPPED_FRAMES); 2594 stats->tx_dropped = lan743x_csr_read(adapter, 2595 STAT_TX_EXCESSIVE_COLLISION); 2596 stats->multicast = lan743x_csr_read(adapter, 2597 STAT_RX_MULTICAST_FRAMES) + 2598 lan743x_csr_read(adapter, 2599 STAT_TX_MULTICAST_FRAMES); 2600 stats->collisions = lan743x_csr_read(adapter, 2601 STAT_TX_SINGLE_COLLISIONS) + 2602 lan743x_csr_read(adapter, 2603 STAT_TX_MULTIPLE_COLLISIONS) + 2604 lan743x_csr_read(adapter, 2605 STAT_TX_LATE_COLLISIONS); 2606 } 2607 2608 static int lan743x_netdev_set_mac_address(struct net_device *netdev, 2609 void *addr) 2610 { 2611 struct lan743x_adapter *adapter = netdev_priv(netdev); 2612 struct sockaddr *sock_addr = addr; 2613 int ret; 2614 2615 ret = eth_prepare_mac_addr_change(netdev, sock_addr); 2616 if (ret) 2617 return ret; 2618 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data); 2619 lan743x_mac_set_address(adapter, sock_addr->sa_data); 2620 lan743x_rfe_update_mac_address(adapter); 2621 return 0; 2622 } 2623 2624 static const struct net_device_ops lan743x_netdev_ops = { 2625 .ndo_open = lan743x_netdev_open, 2626 .ndo_stop = lan743x_netdev_close, 2627 .ndo_start_xmit = lan743x_netdev_xmit_frame, 2628 .ndo_do_ioctl = lan743x_netdev_ioctl, 2629 .ndo_set_rx_mode = lan743x_netdev_set_multicast, 2630 .ndo_change_mtu = lan743x_netdev_change_mtu, 2631 .ndo_get_stats64 = lan743x_netdev_get_stats64, 2632 .ndo_set_mac_address = lan743x_netdev_set_mac_address, 2633 }; 2634 2635 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter) 2636 { 2637 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2638 } 2639 2640 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter) 2641 { 2642 mdiobus_unregister(adapter->mdiobus); 2643 } 2644 2645 static void lan743x_full_cleanup(struct lan743x_adapter *adapter) 2646 { 2647 unregister_netdev(adapter->netdev); 2648 2649 lan743x_mdiobus_cleanup(adapter); 2650 lan743x_hardware_cleanup(adapter); 2651 lan743x_pci_cleanup(adapter); 2652 } 2653 2654 static int lan743x_hardware_init(struct lan743x_adapter *adapter, 2655 struct pci_dev *pdev) 2656 { 2657 struct lan743x_tx *tx; 2658 int index; 2659 int ret; 2660 2661 adapter->intr.irq = adapter->pdev->irq; 2662 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2663 mutex_init(&adapter->dp_lock); 2664 2665 ret = lan743x_gpio_init(adapter); 2666 if (ret) 2667 return ret; 2668 2669 ret = lan743x_mac_init(adapter); 2670 if (ret) 2671 return ret; 2672 2673 ret = lan743x_phy_init(adapter); 2674 if (ret) 2675 return ret; 2676 2677 ret = lan743x_ptp_init(adapter); 2678 if (ret) 2679 return ret; 2680 2681 lan743x_rfe_update_mac_address(adapter); 2682 2683 ret = lan743x_dmac_init(adapter); 2684 if (ret) 2685 return ret; 2686 2687 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2688 adapter->rx[index].adapter = adapter; 2689 adapter->rx[index].channel_number = index; 2690 } 2691 2692 tx = &adapter->tx[0]; 2693 tx->adapter = adapter; 2694 tx->channel_number = 0; 2695 spin_lock_init(&tx->ring_lock); 2696 return 0; 2697 } 2698 2699 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter) 2700 { 2701 int ret; 2702 2703 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev); 2704 if (!(adapter->mdiobus)) { 2705 ret = -ENOMEM; 2706 goto return_error; 2707 } 2708 2709 adapter->mdiobus->priv = (void *)adapter; 2710 adapter->mdiobus->read = lan743x_mdiobus_read; 2711 adapter->mdiobus->write = lan743x_mdiobus_write; 2712 adapter->mdiobus->name = "lan743x-mdiobus"; 2713 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE, 2714 "pci-%s", pci_name(adapter->pdev)); 2715 2716 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_) 2717 /* LAN7430 uses internal phy at address 1 */ 2718 adapter->mdiobus->phy_mask = ~(u32)BIT(1); 2719 2720 /* register mdiobus */ 2721 ret = mdiobus_register(adapter->mdiobus); 2722 if (ret < 0) 2723 goto return_error; 2724 return 0; 2725 2726 return_error: 2727 return ret; 2728 } 2729 2730 /* lan743x_pcidev_probe - Device Initialization Routine 2731 * @pdev: PCI device information struct 2732 * @id: entry in lan743x_pci_tbl 2733 * 2734 * Returns 0 on success, negative on failure 2735 * 2736 * initializes an adapter identified by a pci_dev structure. 2737 * The OS initialization, configuring of the adapter private structure, 2738 * and a hardware reset occur. 2739 **/ 2740 static int lan743x_pcidev_probe(struct pci_dev *pdev, 2741 const struct pci_device_id *id) 2742 { 2743 struct lan743x_adapter *adapter = NULL; 2744 struct net_device *netdev = NULL; 2745 int ret = -ENODEV; 2746 2747 netdev = devm_alloc_etherdev(&pdev->dev, 2748 sizeof(struct lan743x_adapter)); 2749 if (!netdev) 2750 goto return_error; 2751 2752 SET_NETDEV_DEV(netdev, &pdev->dev); 2753 pci_set_drvdata(pdev, netdev); 2754 adapter = netdev_priv(netdev); 2755 adapter->netdev = netdev; 2756 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE | 2757 NETIF_MSG_LINK | NETIF_MSG_IFUP | 2758 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED; 2759 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE; 2760 2761 ret = lan743x_pci_init(adapter, pdev); 2762 if (ret) 2763 goto return_error; 2764 2765 ret = lan743x_csr_init(adapter); 2766 if (ret) 2767 goto cleanup_pci; 2768 2769 ret = lan743x_hardware_init(adapter, pdev); 2770 if (ret) 2771 goto cleanup_pci; 2772 2773 ret = lan743x_mdiobus_init(adapter); 2774 if (ret) 2775 goto cleanup_hardware; 2776 2777 adapter->netdev->netdev_ops = &lan743x_netdev_ops; 2778 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops; 2779 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM; 2780 adapter->netdev->hw_features = adapter->netdev->features; 2781 2782 /* carrier off reporting is important to ethtool even BEFORE open */ 2783 netif_carrier_off(netdev); 2784 2785 ret = register_netdev(adapter->netdev); 2786 if (ret < 0) 2787 goto cleanup_mdiobus; 2788 return 0; 2789 2790 cleanup_mdiobus: 2791 lan743x_mdiobus_cleanup(adapter); 2792 2793 cleanup_hardware: 2794 lan743x_hardware_cleanup(adapter); 2795 2796 cleanup_pci: 2797 lan743x_pci_cleanup(adapter); 2798 2799 return_error: 2800 pr_warn("Initialization failed\n"); 2801 return ret; 2802 } 2803 2804 /** 2805 * lan743x_pcidev_remove - Device Removal Routine 2806 * @pdev: PCI device information struct 2807 * 2808 * this is called by the PCI subsystem to alert the driver 2809 * that it should release a PCI device. This could be caused by a 2810 * Hot-Plug event, or because the driver is going to be removed from 2811 * memory. 2812 **/ 2813 static void lan743x_pcidev_remove(struct pci_dev *pdev) 2814 { 2815 struct net_device *netdev = pci_get_drvdata(pdev); 2816 struct lan743x_adapter *adapter = netdev_priv(netdev); 2817 2818 lan743x_full_cleanup(adapter); 2819 } 2820 2821 static void lan743x_pcidev_shutdown(struct pci_dev *pdev) 2822 { 2823 struct net_device *netdev = pci_get_drvdata(pdev); 2824 struct lan743x_adapter *adapter = netdev_priv(netdev); 2825 2826 rtnl_lock(); 2827 netif_device_detach(netdev); 2828 2829 /* close netdev when netdev is at running state. 2830 * For instance, it is true when system goes to sleep by pm-suspend 2831 * However, it is false when system goes to sleep by suspend GUI menu 2832 */ 2833 if (netif_running(netdev)) 2834 lan743x_netdev_close(netdev); 2835 rtnl_unlock(); 2836 2837 #ifdef CONFIG_PM 2838 pci_save_state(pdev); 2839 #endif 2840 2841 /* clean up lan743x portion */ 2842 lan743x_hardware_cleanup(adapter); 2843 } 2844 2845 #ifdef CONFIG_PM_SLEEP 2846 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len) 2847 { 2848 return bitrev16(crc16(0xFFFF, buf, len)); 2849 } 2850 2851 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) 2852 { 2853 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; 2854 const u8 ipv6_multicast[3] = { 0x33, 0x33 }; 2855 const u8 arp_type[2] = { 0x08, 0x06 }; 2856 int mask_index; 2857 u32 pmtctl; 2858 u32 wucsr; 2859 u32 macrx; 2860 u16 crc; 2861 2862 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++) 2863 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0); 2864 2865 /* clear wake settings */ 2866 pmtctl = lan743x_csr_read(adapter, PMT_CTL); 2867 pmtctl |= PMT_CTL_WUPS_MASK_; 2868 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | 2869 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | 2870 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); 2871 2872 macrx = lan743x_csr_read(adapter, MAC_RX); 2873 2874 wucsr = 0; 2875 mask_index = 0; 2876 2877 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_; 2878 2879 if (adapter->wolopts & WAKE_PHY) { 2880 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_; 2881 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_; 2882 } 2883 if (adapter->wolopts & WAKE_MAGIC) { 2884 wucsr |= MAC_WUCSR_MPEN_; 2885 macrx |= MAC_RX_RXEN_; 2886 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2887 } 2888 if (adapter->wolopts & WAKE_UCAST) { 2889 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_; 2890 macrx |= MAC_RX_RXEN_; 2891 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2892 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2893 } 2894 if (adapter->wolopts & WAKE_BCAST) { 2895 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_; 2896 macrx |= MAC_RX_RXEN_; 2897 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2898 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2899 } 2900 if (adapter->wolopts & WAKE_MCAST) { 2901 /* IPv4 multicast */ 2902 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3); 2903 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2904 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2905 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2906 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2907 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7); 2908 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2909 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2910 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2911 mask_index++; 2912 2913 /* IPv6 multicast */ 2914 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2); 2915 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2916 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2917 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2918 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2919 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3); 2920 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2921 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2922 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2923 mask_index++; 2924 2925 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 2926 macrx |= MAC_RX_RXEN_; 2927 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2928 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2929 } 2930 if (adapter->wolopts & WAKE_ARP) { 2931 /* set MAC_WUF_CFG & WUF_MASK 2932 * for packettype (offset 12,13) = ARP (0x0806) 2933 */ 2934 crc = lan743x_pm_wakeframe_crc16(arp_type, 2); 2935 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2936 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ | 2937 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2938 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2939 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000); 2940 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2941 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2942 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2943 mask_index++; 2944 2945 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 2946 macrx |= MAC_RX_RXEN_; 2947 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2948 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2949 } 2950 2951 lan743x_csr_write(adapter, MAC_WUCSR, wucsr); 2952 lan743x_csr_write(adapter, PMT_CTL, pmtctl); 2953 lan743x_csr_write(adapter, MAC_RX, macrx); 2954 } 2955 2956 static int lan743x_pm_suspend(struct device *dev) 2957 { 2958 struct pci_dev *pdev = to_pci_dev(dev); 2959 struct net_device *netdev = pci_get_drvdata(pdev); 2960 struct lan743x_adapter *adapter = netdev_priv(netdev); 2961 int ret; 2962 2963 lan743x_pcidev_shutdown(pdev); 2964 2965 /* clear all wakes */ 2966 lan743x_csr_write(adapter, MAC_WUCSR, 0); 2967 lan743x_csr_write(adapter, MAC_WUCSR2, 0); 2968 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF); 2969 2970 if (adapter->wolopts) 2971 lan743x_pm_set_wol(adapter); 2972 2973 /* Host sets PME_En, put D3hot */ 2974 ret = pci_prepare_to_sleep(pdev); 2975 2976 return 0; 2977 } 2978 2979 static int lan743x_pm_resume(struct device *dev) 2980 { 2981 struct pci_dev *pdev = to_pci_dev(dev); 2982 struct net_device *netdev = pci_get_drvdata(pdev); 2983 struct lan743x_adapter *adapter = netdev_priv(netdev); 2984 int ret; 2985 2986 pci_set_power_state(pdev, PCI_D0); 2987 pci_restore_state(pdev); 2988 pci_save_state(pdev); 2989 2990 ret = lan743x_hardware_init(adapter, pdev); 2991 if (ret) { 2992 netif_err(adapter, probe, adapter->netdev, 2993 "lan743x_hardware_init returned %d\n", ret); 2994 } 2995 2996 /* open netdev when netdev is at running state while resume. 2997 * For instance, it is true when system wakesup after pm-suspend 2998 * However, it is false when system wakes up after suspend GUI menu 2999 */ 3000 if (netif_running(netdev)) 3001 lan743x_netdev_open(netdev); 3002 3003 netif_device_attach(netdev); 3004 3005 return 0; 3006 } 3007 3008 static const struct dev_pm_ops lan743x_pm_ops = { 3009 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume) 3010 }; 3011 #endif /* CONFIG_PM_SLEEP */ 3012 3013 static const struct pci_device_id lan743x_pcidev_tbl[] = { 3014 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) }, 3015 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) }, 3016 { 0, } 3017 }; 3018 3019 static struct pci_driver lan743x_pcidev_driver = { 3020 .name = DRIVER_NAME, 3021 .id_table = lan743x_pcidev_tbl, 3022 .probe = lan743x_pcidev_probe, 3023 .remove = lan743x_pcidev_remove, 3024 #ifdef CONFIG_PM_SLEEP 3025 .driver.pm = &lan743x_pm_ops, 3026 #endif 3027 .shutdown = lan743x_pcidev_shutdown, 3028 }; 3029 3030 module_pci_driver(lan743x_pcidev_driver); 3031 3032 MODULE_AUTHOR(DRIVER_AUTHOR); 3033 MODULE_DESCRIPTION(DRIVER_DESC); 3034 MODULE_LICENSE("GPL"); 3035