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