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 int nr_frags) 1405 { 1406 /* called only from within lan743x_tx_xmit_frame. 1407 * assuming tx->ring_lock has already been acquired. 1408 */ 1409 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1410 struct lan743x_tx_buffer_info *buffer_info = NULL; 1411 1412 /* wrap up previous descriptor */ 1413 tx->frame_data0 |= TX_DESC_DATA0_EXT_; 1414 if (nr_frags <= 0) { 1415 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1416 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1417 } 1418 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1419 tx_descriptor->data0 = tx->frame_data0; 1420 1421 /* move to next descriptor */ 1422 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1423 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1424 buffer_info = &tx->buffer_info[tx->frame_tail]; 1425 1426 /* add extension descriptor */ 1427 tx_descriptor->data1 = 0; 1428 tx_descriptor->data2 = 0; 1429 tx_descriptor->data3 = 0; 1430 1431 buffer_info->skb = NULL; 1432 buffer_info->dma_ptr = 0; 1433 buffer_info->buffer_length = 0; 1434 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1435 1436 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) | 1437 TX_DESC_DATA0_DTYPE_EXT_ | 1438 TX_DESC_DATA0_EXT_LSO_; 1439 1440 /* data0 will be programmed in one of other frame assembler functions */ 1441 } 1442 1443 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx, 1444 const struct skb_frag_struct *fragment, 1445 unsigned int frame_length) 1446 { 1447 /* called only from within lan743x_tx_xmit_frame 1448 * assuming tx->ring_lock has already been acquired 1449 */ 1450 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1451 struct lan743x_tx_buffer_info *buffer_info = NULL; 1452 struct lan743x_adapter *adapter = tx->adapter; 1453 struct device *dev = &adapter->pdev->dev; 1454 unsigned int fragment_length = 0; 1455 dma_addr_t dma_ptr; 1456 1457 fragment_length = skb_frag_size(fragment); 1458 if (!fragment_length) 1459 return 0; 1460 1461 /* wrap up previous descriptor */ 1462 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1463 tx_descriptor->data0 = tx->frame_data0; 1464 1465 /* move to next descriptor */ 1466 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1467 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1468 buffer_info = &tx->buffer_info[tx->frame_tail]; 1469 dma_ptr = skb_frag_dma_map(dev, fragment, 1470 0, fragment_length, 1471 DMA_TO_DEVICE); 1472 if (dma_mapping_error(dev, dma_ptr)) { 1473 int desc_index; 1474 1475 /* cleanup all previously setup descriptors */ 1476 desc_index = tx->frame_first; 1477 while (desc_index != tx->frame_tail) { 1478 lan743x_tx_release_desc(tx, desc_index, true); 1479 desc_index = lan743x_tx_next_index(tx, desc_index); 1480 } 1481 dma_wmb(); 1482 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1483 tx->frame_first = 0; 1484 tx->frame_data0 = 0; 1485 tx->frame_tail = 0; 1486 return -ENOMEM; 1487 } 1488 1489 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1490 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1491 tx_descriptor->data3 = (frame_length << 16) & 1492 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1493 1494 buffer_info->skb = NULL; 1495 buffer_info->dma_ptr = dma_ptr; 1496 buffer_info->buffer_length = fragment_length; 1497 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1498 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT; 1499 1500 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1501 TX_DESC_DATA0_DTYPE_DATA_ | 1502 TX_DESC_DATA0_FCS_; 1503 1504 /* data0 will be programmed in one of other frame assembler functions */ 1505 return 0; 1506 } 1507 1508 static void lan743x_tx_frame_end(struct lan743x_tx *tx, 1509 struct sk_buff *skb, 1510 bool time_stamp, 1511 bool ignore_sync) 1512 { 1513 /* called only from within lan743x_tx_xmit_frame 1514 * assuming tx->ring_lock has already been acquired 1515 */ 1516 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1517 struct lan743x_tx_buffer_info *buffer_info = NULL; 1518 struct lan743x_adapter *adapter = tx->adapter; 1519 u32 tx_tail_flags = 0; 1520 1521 /* wrap up previous descriptor */ 1522 if ((tx->frame_data0 & TX_DESC_DATA0_DTYPE_MASK_) == 1523 TX_DESC_DATA0_DTYPE_DATA_) { 1524 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1525 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1526 } 1527 1528 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1529 buffer_info = &tx->buffer_info[tx->frame_tail]; 1530 buffer_info->skb = skb; 1531 if (time_stamp) 1532 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED; 1533 if (ignore_sync) 1534 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC; 1535 1536 tx_descriptor->data0 = tx->frame_data0; 1537 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1538 tx->last_tail = tx->frame_tail; 1539 1540 dma_wmb(); 1541 1542 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 1543 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_; 1544 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) 1545 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ | 1546 TX_TAIL_SET_TOP_INT_EN_; 1547 1548 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1549 tx_tail_flags | tx->frame_tail); 1550 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1551 } 1552 1553 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx, 1554 struct sk_buff *skb) 1555 { 1556 int required_number_of_descriptors = 0; 1557 unsigned int start_frame_length = 0; 1558 unsigned int frame_length = 0; 1559 unsigned int head_length = 0; 1560 unsigned long irq_flags = 0; 1561 bool do_timestamp = false; 1562 bool ignore_sync = false; 1563 int nr_frags = 0; 1564 bool gso = false; 1565 int j; 1566 1567 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb); 1568 1569 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1570 if (required_number_of_descriptors > 1571 lan743x_tx_get_avail_desc(tx)) { 1572 if (required_number_of_descriptors > (tx->ring_size - 1)) { 1573 dev_kfree_skb(skb); 1574 } else { 1575 /* save to overflow buffer */ 1576 tx->overflow_skb = skb; 1577 netif_stop_queue(tx->adapter->netdev); 1578 } 1579 goto unlock; 1580 } 1581 1582 /* space available, transmit skb */ 1583 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 1584 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) && 1585 (lan743x_ptp_request_tx_timestamp(tx->adapter))) { 1586 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 1587 do_timestamp = true; 1588 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC) 1589 ignore_sync = true; 1590 } 1591 head_length = skb_headlen(skb); 1592 frame_length = skb_pagelen(skb); 1593 nr_frags = skb_shinfo(skb)->nr_frags; 1594 start_frame_length = frame_length; 1595 gso = skb_is_gso(skb); 1596 if (gso) { 1597 start_frame_length = max(skb_shinfo(skb)->gso_size, 1598 (unsigned short)8); 1599 } 1600 1601 if (lan743x_tx_frame_start(tx, 1602 skb->data, head_length, 1603 start_frame_length, 1604 do_timestamp, 1605 skb->ip_summed == CHECKSUM_PARTIAL)) { 1606 dev_kfree_skb(skb); 1607 goto unlock; 1608 } 1609 1610 if (gso) 1611 lan743x_tx_frame_add_lso(tx, frame_length, nr_frags); 1612 1613 if (nr_frags <= 0) 1614 goto finish; 1615 1616 for (j = 0; j < nr_frags; j++) { 1617 const struct skb_frag_struct *frag; 1618 1619 frag = &(skb_shinfo(skb)->frags[j]); 1620 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) { 1621 /* upon error no need to call 1622 * lan743x_tx_frame_end 1623 * frame assembler clean up was performed inside 1624 * lan743x_tx_frame_add_fragment 1625 */ 1626 dev_kfree_skb(skb); 1627 goto unlock; 1628 } 1629 } 1630 1631 finish: 1632 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync); 1633 1634 unlock: 1635 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1636 return NETDEV_TX_OK; 1637 } 1638 1639 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight) 1640 { 1641 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi); 1642 struct lan743x_adapter *adapter = tx->adapter; 1643 bool start_transmitter = false; 1644 unsigned long irq_flags = 0; 1645 u32 ioc_bit = 0; 1646 u32 int_sts = 0; 1647 1648 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 1649 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 1650 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) 1651 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit); 1652 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1653 1654 /* clean up tx ring */ 1655 lan743x_tx_release_completed_descriptors(tx); 1656 if (netif_queue_stopped(adapter->netdev)) { 1657 if (tx->overflow_skb) { 1658 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <= 1659 lan743x_tx_get_avail_desc(tx)) 1660 start_transmitter = true; 1661 } else { 1662 netif_wake_queue(adapter->netdev); 1663 } 1664 } 1665 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1666 1667 if (start_transmitter) { 1668 /* space is now available, transmit overflow skb */ 1669 lan743x_tx_xmit_frame(tx, tx->overflow_skb); 1670 tx->overflow_skb = NULL; 1671 netif_wake_queue(adapter->netdev); 1672 } 1673 1674 if (!napi_complete(napi)) 1675 goto done; 1676 1677 /* enable isr */ 1678 lan743x_csr_write(adapter, INT_EN_SET, 1679 INT_BIT_DMA_TX_(tx->channel_number)); 1680 lan743x_csr_read(adapter, INT_STS); 1681 1682 done: 1683 return 0; 1684 } 1685 1686 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx) 1687 { 1688 if (tx->head_cpu_ptr) { 1689 pci_free_consistent(tx->adapter->pdev, 1690 sizeof(*tx->head_cpu_ptr), 1691 (void *)(tx->head_cpu_ptr), 1692 tx->head_dma_ptr); 1693 tx->head_cpu_ptr = NULL; 1694 tx->head_dma_ptr = 0; 1695 } 1696 kfree(tx->buffer_info); 1697 tx->buffer_info = NULL; 1698 1699 if (tx->ring_cpu_ptr) { 1700 pci_free_consistent(tx->adapter->pdev, 1701 tx->ring_allocation_size, 1702 tx->ring_cpu_ptr, 1703 tx->ring_dma_ptr); 1704 tx->ring_allocation_size = 0; 1705 tx->ring_cpu_ptr = NULL; 1706 tx->ring_dma_ptr = 0; 1707 } 1708 tx->ring_size = 0; 1709 } 1710 1711 static int lan743x_tx_ring_init(struct lan743x_tx *tx) 1712 { 1713 size_t ring_allocation_size = 0; 1714 void *cpu_ptr = NULL; 1715 dma_addr_t dma_ptr; 1716 int ret = -ENOMEM; 1717 1718 tx->ring_size = LAN743X_TX_RING_SIZE; 1719 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) { 1720 ret = -EINVAL; 1721 goto cleanup; 1722 } 1723 ring_allocation_size = ALIGN(tx->ring_size * 1724 sizeof(struct lan743x_tx_descriptor), 1725 PAGE_SIZE); 1726 dma_ptr = 0; 1727 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1728 ring_allocation_size, &dma_ptr); 1729 if (!cpu_ptr) { 1730 ret = -ENOMEM; 1731 goto cleanup; 1732 } 1733 1734 tx->ring_allocation_size = ring_allocation_size; 1735 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr; 1736 tx->ring_dma_ptr = dma_ptr; 1737 1738 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL); 1739 if (!cpu_ptr) { 1740 ret = -ENOMEM; 1741 goto cleanup; 1742 } 1743 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr; 1744 dma_ptr = 0; 1745 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1746 sizeof(*tx->head_cpu_ptr), &dma_ptr); 1747 if (!cpu_ptr) { 1748 ret = -ENOMEM; 1749 goto cleanup; 1750 } 1751 1752 tx->head_cpu_ptr = cpu_ptr; 1753 tx->head_dma_ptr = dma_ptr; 1754 if (tx->head_dma_ptr & 0x3) { 1755 ret = -ENOMEM; 1756 goto cleanup; 1757 } 1758 1759 return 0; 1760 1761 cleanup: 1762 lan743x_tx_ring_cleanup(tx); 1763 return ret; 1764 } 1765 1766 static void lan743x_tx_close(struct lan743x_tx *tx) 1767 { 1768 struct lan743x_adapter *adapter = tx->adapter; 1769 1770 lan743x_csr_write(adapter, 1771 DMAC_CMD, 1772 DMAC_CMD_STOP_T_(tx->channel_number)); 1773 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number); 1774 1775 lan743x_csr_write(adapter, 1776 DMAC_INT_EN_CLR, 1777 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1778 lan743x_csr_write(adapter, INT_EN_CLR, 1779 INT_BIT_DMA_TX_(tx->channel_number)); 1780 napi_disable(&tx->napi); 1781 netif_napi_del(&tx->napi); 1782 1783 lan743x_csr_write(adapter, FCT_TX_CTL, 1784 FCT_TX_CTL_DIS_(tx->channel_number)); 1785 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1786 FCT_TX_CTL_EN_(tx->channel_number), 1787 0, 1000, 20000, 100); 1788 1789 lan743x_tx_release_all_descriptors(tx); 1790 1791 if (tx->overflow_skb) { 1792 dev_kfree_skb(tx->overflow_skb); 1793 tx->overflow_skb = NULL; 1794 } 1795 1796 lan743x_tx_ring_cleanup(tx); 1797 } 1798 1799 static int lan743x_tx_open(struct lan743x_tx *tx) 1800 { 1801 struct lan743x_adapter *adapter = NULL; 1802 u32 data = 0; 1803 int ret; 1804 1805 adapter = tx->adapter; 1806 ret = lan743x_tx_ring_init(tx); 1807 if (ret) 1808 return ret; 1809 1810 /* initialize fifo */ 1811 lan743x_csr_write(adapter, FCT_TX_CTL, 1812 FCT_TX_CTL_RESET_(tx->channel_number)); 1813 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1814 FCT_TX_CTL_RESET_(tx->channel_number), 1815 0, 1000, 20000, 100); 1816 1817 /* enable fifo */ 1818 lan743x_csr_write(adapter, FCT_TX_CTL, 1819 FCT_TX_CTL_EN_(tx->channel_number)); 1820 1821 /* reset tx channel */ 1822 lan743x_csr_write(adapter, DMAC_CMD, 1823 DMAC_CMD_TX_SWR_(tx->channel_number)); 1824 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 1825 DMAC_CMD_TX_SWR_(tx->channel_number), 1826 0, 1000, 20000, 100); 1827 1828 /* Write TX_BASE_ADDR */ 1829 lan743x_csr_write(adapter, 1830 TX_BASE_ADDRH(tx->channel_number), 1831 DMA_ADDR_HIGH32(tx->ring_dma_ptr)); 1832 lan743x_csr_write(adapter, 1833 TX_BASE_ADDRL(tx->channel_number), 1834 DMA_ADDR_LOW32(tx->ring_dma_ptr)); 1835 1836 /* Write TX_CFG_B */ 1837 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number)); 1838 data &= ~TX_CFG_B_TX_RING_LEN_MASK_; 1839 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_); 1840 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1841 data |= TX_CFG_B_TDMABL_512_; 1842 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data); 1843 1844 /* Write TX_CFG_A */ 1845 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_; 1846 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 1847 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_; 1848 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10); 1849 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04); 1850 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07); 1851 } 1852 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data); 1853 1854 /* Write TX_HEAD_WRITEBACK_ADDR */ 1855 lan743x_csr_write(adapter, 1856 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number), 1857 DMA_ADDR_HIGH32(tx->head_dma_ptr)); 1858 lan743x_csr_write(adapter, 1859 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number), 1860 DMA_ADDR_LOW32(tx->head_dma_ptr)); 1861 1862 /* set last head */ 1863 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number)); 1864 1865 /* write TX_TAIL */ 1866 tx->last_tail = 0; 1867 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1868 (u32)(tx->last_tail)); 1869 tx->vector_flags = lan743x_intr_get_vector_flags(adapter, 1870 INT_BIT_DMA_TX_ 1871 (tx->channel_number)); 1872 netif_tx_napi_add(adapter->netdev, 1873 &tx->napi, lan743x_tx_napi_poll, 1874 tx->ring_size - 1); 1875 napi_enable(&tx->napi); 1876 1877 data = 0; 1878 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 1879 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_; 1880 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 1881 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_; 1882 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 1883 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_; 1884 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 1885 data |= TX_CFG_C_TX_INT_EN_R2C_; 1886 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data); 1887 1888 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)) 1889 lan743x_csr_write(adapter, INT_EN_SET, 1890 INT_BIT_DMA_TX_(tx->channel_number)); 1891 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 1892 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1893 1894 /* start dmac channel */ 1895 lan743x_csr_write(adapter, DMAC_CMD, 1896 DMAC_CMD_START_T_(tx->channel_number)); 1897 return 0; 1898 } 1899 1900 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index) 1901 { 1902 return ((++index) % rx->ring_size); 1903 } 1904 1905 static int lan743x_rx_allocate_ring_element(struct lan743x_rx *rx, int index) 1906 { 1907 struct lan743x_rx_buffer_info *buffer_info; 1908 struct lan743x_rx_descriptor *descriptor; 1909 int length = 0; 1910 1911 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1912 descriptor = &rx->ring_cpu_ptr[index]; 1913 buffer_info = &rx->buffer_info[index]; 1914 buffer_info->skb = __netdev_alloc_skb(rx->adapter->netdev, 1915 length, 1916 GFP_ATOMIC | GFP_DMA); 1917 if (!(buffer_info->skb)) 1918 return -ENOMEM; 1919 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev, 1920 buffer_info->skb->data, 1921 length, 1922 DMA_FROM_DEVICE); 1923 if (dma_mapping_error(&rx->adapter->pdev->dev, 1924 buffer_info->dma_ptr)) { 1925 buffer_info->dma_ptr = 0; 1926 return -ENOMEM; 1927 } 1928 1929 buffer_info->buffer_length = length; 1930 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1931 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1932 descriptor->data3 = 0; 1933 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1934 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1935 skb_reserve(buffer_info->skb, RX_HEAD_PADDING); 1936 1937 return 0; 1938 } 1939 1940 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index) 1941 { 1942 struct lan743x_rx_buffer_info *buffer_info; 1943 struct lan743x_rx_descriptor *descriptor; 1944 1945 descriptor = &rx->ring_cpu_ptr[index]; 1946 buffer_info = &rx->buffer_info[index]; 1947 1948 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1949 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1950 descriptor->data3 = 0; 1951 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1952 ((buffer_info->buffer_length) & 1953 RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1954 } 1955 1956 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index) 1957 { 1958 struct lan743x_rx_buffer_info *buffer_info; 1959 struct lan743x_rx_descriptor *descriptor; 1960 1961 descriptor = &rx->ring_cpu_ptr[index]; 1962 buffer_info = &rx->buffer_info[index]; 1963 1964 memset(descriptor, 0, sizeof(*descriptor)); 1965 1966 if (buffer_info->dma_ptr) { 1967 dma_unmap_single(&rx->adapter->pdev->dev, 1968 buffer_info->dma_ptr, 1969 buffer_info->buffer_length, 1970 DMA_FROM_DEVICE); 1971 buffer_info->dma_ptr = 0; 1972 } 1973 1974 if (buffer_info->skb) { 1975 dev_kfree_skb(buffer_info->skb); 1976 buffer_info->skb = NULL; 1977 } 1978 1979 memset(buffer_info, 0, sizeof(*buffer_info)); 1980 } 1981 1982 static int lan743x_rx_process_packet(struct lan743x_rx *rx) 1983 { 1984 struct skb_shared_hwtstamps *hwtstamps = NULL; 1985 int result = RX_PROCESS_RESULT_NOTHING_TO_DO; 1986 struct lan743x_rx_buffer_info *buffer_info; 1987 struct lan743x_rx_descriptor *descriptor; 1988 int current_head_index = -1; 1989 int extension_index = -1; 1990 int first_index = -1; 1991 int last_index = -1; 1992 1993 current_head_index = *rx->head_cpu_ptr; 1994 if (current_head_index < 0 || current_head_index >= rx->ring_size) 1995 goto done; 1996 1997 if (rx->last_head < 0 || rx->last_head >= rx->ring_size) 1998 goto done; 1999 2000 if (rx->last_head != current_head_index) { 2001 descriptor = &rx->ring_cpu_ptr[rx->last_head]; 2002 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2003 goto done; 2004 2005 if (!(descriptor->data0 & RX_DESC_DATA0_FS_)) 2006 goto done; 2007 2008 first_index = rx->last_head; 2009 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2010 last_index = rx->last_head; 2011 } else { 2012 int index; 2013 2014 index = lan743x_rx_next_index(rx, first_index); 2015 while (index != current_head_index) { 2016 descriptor = &rx->ring_cpu_ptr[index]; 2017 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2018 goto done; 2019 2020 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2021 last_index = index; 2022 break; 2023 } 2024 index = lan743x_rx_next_index(rx, index); 2025 } 2026 } 2027 if (last_index >= 0) { 2028 descriptor = &rx->ring_cpu_ptr[last_index]; 2029 if (descriptor->data0 & RX_DESC_DATA0_EXT_) { 2030 /* extension is expected to follow */ 2031 int index = lan743x_rx_next_index(rx, 2032 last_index); 2033 if (index != current_head_index) { 2034 descriptor = &rx->ring_cpu_ptr[index]; 2035 if (descriptor->data0 & 2036 RX_DESC_DATA0_OWN_) { 2037 goto done; 2038 } 2039 if (descriptor->data0 & 2040 RX_DESC_DATA0_EXT_) { 2041 extension_index = index; 2042 } else { 2043 goto done; 2044 } 2045 } else { 2046 /* extension is not yet available */ 2047 /* prevent processing of this packet */ 2048 first_index = -1; 2049 last_index = -1; 2050 } 2051 } 2052 } 2053 } 2054 if (first_index >= 0 && last_index >= 0) { 2055 int real_last_index = last_index; 2056 struct sk_buff *skb = NULL; 2057 u32 ts_sec = 0; 2058 u32 ts_nsec = 0; 2059 2060 /* packet is available */ 2061 if (first_index == last_index) { 2062 /* single buffer packet */ 2063 int packet_length; 2064 2065 buffer_info = &rx->buffer_info[first_index]; 2066 skb = buffer_info->skb; 2067 descriptor = &rx->ring_cpu_ptr[first_index]; 2068 2069 /* unmap from dma */ 2070 if (buffer_info->dma_ptr) { 2071 dma_unmap_single(&rx->adapter->pdev->dev, 2072 buffer_info->dma_ptr, 2073 buffer_info->buffer_length, 2074 DMA_FROM_DEVICE); 2075 buffer_info->dma_ptr = 0; 2076 buffer_info->buffer_length = 0; 2077 } 2078 buffer_info->skb = NULL; 2079 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_ 2080 (descriptor->data0); 2081 skb_put(skb, packet_length - 4); 2082 skb->protocol = eth_type_trans(skb, 2083 rx->adapter->netdev); 2084 lan743x_rx_allocate_ring_element(rx, first_index); 2085 } else { 2086 int index = first_index; 2087 2088 /* multi buffer packet not supported */ 2089 /* this should not happen since 2090 * buffers are allocated to be at least jumbo size 2091 */ 2092 2093 /* clean up buffers */ 2094 if (first_index <= last_index) { 2095 while ((index >= first_index) && 2096 (index <= last_index)) { 2097 lan743x_rx_release_ring_element(rx, 2098 index); 2099 lan743x_rx_allocate_ring_element(rx, 2100 index); 2101 index = lan743x_rx_next_index(rx, 2102 index); 2103 } 2104 } else { 2105 while ((index >= first_index) || 2106 (index <= last_index)) { 2107 lan743x_rx_release_ring_element(rx, 2108 index); 2109 lan743x_rx_allocate_ring_element(rx, 2110 index); 2111 index = lan743x_rx_next_index(rx, 2112 index); 2113 } 2114 } 2115 } 2116 2117 if (extension_index >= 0) { 2118 descriptor = &rx->ring_cpu_ptr[extension_index]; 2119 buffer_info = &rx->buffer_info[extension_index]; 2120 2121 ts_sec = descriptor->data1; 2122 ts_nsec = (descriptor->data2 & 2123 RX_DESC_DATA2_TS_NS_MASK_); 2124 lan743x_rx_reuse_ring_element(rx, extension_index); 2125 real_last_index = extension_index; 2126 } 2127 2128 if (!skb) { 2129 result = RX_PROCESS_RESULT_PACKET_DROPPED; 2130 goto move_forward; 2131 } 2132 2133 if (extension_index < 0) 2134 goto pass_packet_to_os; 2135 hwtstamps = skb_hwtstamps(skb); 2136 if (hwtstamps) 2137 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec); 2138 2139 pass_packet_to_os: 2140 /* pass packet to OS */ 2141 napi_gro_receive(&rx->napi, skb); 2142 result = RX_PROCESS_RESULT_PACKET_RECEIVED; 2143 2144 move_forward: 2145 /* push tail and head forward */ 2146 rx->last_tail = real_last_index; 2147 rx->last_head = lan743x_rx_next_index(rx, real_last_index); 2148 } 2149 done: 2150 return result; 2151 } 2152 2153 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight) 2154 { 2155 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi); 2156 struct lan743x_adapter *adapter = rx->adapter; 2157 u32 rx_tail_flags = 0; 2158 int count; 2159 2160 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) { 2161 /* clear int status bit before reading packet */ 2162 lan743x_csr_write(adapter, DMAC_INT_STS, 2163 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2164 } 2165 count = 0; 2166 while (count < weight) { 2167 int rx_process_result = -1; 2168 2169 rx_process_result = lan743x_rx_process_packet(rx); 2170 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) { 2171 count++; 2172 } else if (rx_process_result == 2173 RX_PROCESS_RESULT_NOTHING_TO_DO) { 2174 break; 2175 } else if (rx_process_result == 2176 RX_PROCESS_RESULT_PACKET_DROPPED) { 2177 continue; 2178 } 2179 } 2180 rx->frame_count += count; 2181 if (count == weight) 2182 goto done; 2183 2184 if (!napi_complete_done(napi, count)) 2185 goto done; 2186 2187 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 2188 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_; 2189 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) { 2190 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_; 2191 } else { 2192 lan743x_csr_write(adapter, INT_EN_SET, 2193 INT_BIT_DMA_RX_(rx->channel_number)); 2194 } 2195 2196 /* update RX_TAIL */ 2197 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2198 rx_tail_flags | rx->last_tail); 2199 done: 2200 return count; 2201 } 2202 2203 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx) 2204 { 2205 if (rx->buffer_info && rx->ring_cpu_ptr) { 2206 int index; 2207 2208 for (index = 0; index < rx->ring_size; index++) 2209 lan743x_rx_release_ring_element(rx, index); 2210 } 2211 2212 if (rx->head_cpu_ptr) { 2213 pci_free_consistent(rx->adapter->pdev, 2214 sizeof(*rx->head_cpu_ptr), 2215 rx->head_cpu_ptr, 2216 rx->head_dma_ptr); 2217 rx->head_cpu_ptr = NULL; 2218 rx->head_dma_ptr = 0; 2219 } 2220 2221 kfree(rx->buffer_info); 2222 rx->buffer_info = NULL; 2223 2224 if (rx->ring_cpu_ptr) { 2225 pci_free_consistent(rx->adapter->pdev, 2226 rx->ring_allocation_size, 2227 rx->ring_cpu_ptr, 2228 rx->ring_dma_ptr); 2229 rx->ring_allocation_size = 0; 2230 rx->ring_cpu_ptr = NULL; 2231 rx->ring_dma_ptr = 0; 2232 } 2233 2234 rx->ring_size = 0; 2235 rx->last_head = 0; 2236 } 2237 2238 static int lan743x_rx_ring_init(struct lan743x_rx *rx) 2239 { 2240 size_t ring_allocation_size = 0; 2241 dma_addr_t dma_ptr = 0; 2242 void *cpu_ptr = NULL; 2243 int ret = -ENOMEM; 2244 int index = 0; 2245 2246 rx->ring_size = LAN743X_RX_RING_SIZE; 2247 if (rx->ring_size <= 1) { 2248 ret = -EINVAL; 2249 goto cleanup; 2250 } 2251 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) { 2252 ret = -EINVAL; 2253 goto cleanup; 2254 } 2255 ring_allocation_size = ALIGN(rx->ring_size * 2256 sizeof(struct lan743x_rx_descriptor), 2257 PAGE_SIZE); 2258 dma_ptr = 0; 2259 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2260 ring_allocation_size, &dma_ptr); 2261 if (!cpu_ptr) { 2262 ret = -ENOMEM; 2263 goto cleanup; 2264 } 2265 rx->ring_allocation_size = ring_allocation_size; 2266 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr; 2267 rx->ring_dma_ptr = dma_ptr; 2268 2269 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info), 2270 GFP_KERNEL); 2271 if (!cpu_ptr) { 2272 ret = -ENOMEM; 2273 goto cleanup; 2274 } 2275 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr; 2276 dma_ptr = 0; 2277 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2278 sizeof(*rx->head_cpu_ptr), &dma_ptr); 2279 if (!cpu_ptr) { 2280 ret = -ENOMEM; 2281 goto cleanup; 2282 } 2283 2284 rx->head_cpu_ptr = cpu_ptr; 2285 rx->head_dma_ptr = dma_ptr; 2286 if (rx->head_dma_ptr & 0x3) { 2287 ret = -ENOMEM; 2288 goto cleanup; 2289 } 2290 2291 rx->last_head = 0; 2292 for (index = 0; index < rx->ring_size; index++) { 2293 ret = lan743x_rx_allocate_ring_element(rx, index); 2294 if (ret) 2295 goto cleanup; 2296 } 2297 return 0; 2298 2299 cleanup: 2300 lan743x_rx_ring_cleanup(rx); 2301 return ret; 2302 } 2303 2304 static void lan743x_rx_close(struct lan743x_rx *rx) 2305 { 2306 struct lan743x_adapter *adapter = rx->adapter; 2307 2308 lan743x_csr_write(adapter, FCT_RX_CTL, 2309 FCT_RX_CTL_DIS_(rx->channel_number)); 2310 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2311 FCT_RX_CTL_EN_(rx->channel_number), 2312 0, 1000, 20000, 100); 2313 2314 lan743x_csr_write(adapter, DMAC_CMD, 2315 DMAC_CMD_STOP_R_(rx->channel_number)); 2316 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number); 2317 2318 lan743x_csr_write(adapter, DMAC_INT_EN_CLR, 2319 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2320 lan743x_csr_write(adapter, INT_EN_CLR, 2321 INT_BIT_DMA_RX_(rx->channel_number)); 2322 napi_disable(&rx->napi); 2323 2324 netif_napi_del(&rx->napi); 2325 2326 lan743x_rx_ring_cleanup(rx); 2327 } 2328 2329 static int lan743x_rx_open(struct lan743x_rx *rx) 2330 { 2331 struct lan743x_adapter *adapter = rx->adapter; 2332 u32 data = 0; 2333 int ret; 2334 2335 rx->frame_count = 0; 2336 ret = lan743x_rx_ring_init(rx); 2337 if (ret) 2338 goto return_error; 2339 2340 netif_napi_add(adapter->netdev, 2341 &rx->napi, lan743x_rx_napi_poll, 2342 rx->ring_size - 1); 2343 2344 lan743x_csr_write(adapter, DMAC_CMD, 2345 DMAC_CMD_RX_SWR_(rx->channel_number)); 2346 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 2347 DMAC_CMD_RX_SWR_(rx->channel_number), 2348 0, 1000, 20000, 100); 2349 2350 /* set ring base address */ 2351 lan743x_csr_write(adapter, 2352 RX_BASE_ADDRH(rx->channel_number), 2353 DMA_ADDR_HIGH32(rx->ring_dma_ptr)); 2354 lan743x_csr_write(adapter, 2355 RX_BASE_ADDRL(rx->channel_number), 2356 DMA_ADDR_LOW32(rx->ring_dma_ptr)); 2357 2358 /* set rx write back address */ 2359 lan743x_csr_write(adapter, 2360 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number), 2361 DMA_ADDR_HIGH32(rx->head_dma_ptr)); 2362 lan743x_csr_write(adapter, 2363 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number), 2364 DMA_ADDR_LOW32(rx->head_dma_ptr)); 2365 data = RX_CFG_A_RX_HP_WB_EN_; 2366 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 2367 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ | 2368 RX_CFG_A_RX_WB_THRES_SET_(0x7) | 2369 RX_CFG_A_RX_PF_THRES_SET_(16) | 2370 RX_CFG_A_RX_PF_PRI_THRES_SET_(4)); 2371 } 2372 2373 /* set RX_CFG_A */ 2374 lan743x_csr_write(adapter, 2375 RX_CFG_A(rx->channel_number), data); 2376 2377 /* set RX_CFG_B */ 2378 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number)); 2379 data &= ~RX_CFG_B_RX_PAD_MASK_; 2380 if (!RX_HEAD_PADDING) 2381 data |= RX_CFG_B_RX_PAD_0_; 2382 else 2383 data |= RX_CFG_B_RX_PAD_2_; 2384 data &= ~RX_CFG_B_RX_RING_LEN_MASK_; 2385 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_); 2386 data |= RX_CFG_B_TS_ALL_RX_; 2387 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 2388 data |= RX_CFG_B_RDMABL_512_; 2389 2390 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data); 2391 rx->vector_flags = lan743x_intr_get_vector_flags(adapter, 2392 INT_BIT_DMA_RX_ 2393 (rx->channel_number)); 2394 2395 /* set RX_CFG_C */ 2396 data = 0; 2397 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 2398 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_; 2399 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 2400 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_; 2401 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 2402 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_; 2403 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 2404 data |= RX_CFG_C_RX_INT_EN_R2C_; 2405 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data); 2406 2407 rx->last_tail = ((u32)(rx->ring_size - 1)); 2408 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2409 rx->last_tail); 2410 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number)); 2411 if (rx->last_head) { 2412 ret = -EIO; 2413 goto napi_delete; 2414 } 2415 2416 napi_enable(&rx->napi); 2417 2418 lan743x_csr_write(adapter, INT_EN_SET, 2419 INT_BIT_DMA_RX_(rx->channel_number)); 2420 lan743x_csr_write(adapter, DMAC_INT_STS, 2421 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2422 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 2423 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2424 lan743x_csr_write(adapter, DMAC_CMD, 2425 DMAC_CMD_START_R_(rx->channel_number)); 2426 2427 /* initialize fifo */ 2428 lan743x_csr_write(adapter, FCT_RX_CTL, 2429 FCT_RX_CTL_RESET_(rx->channel_number)); 2430 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2431 FCT_RX_CTL_RESET_(rx->channel_number), 2432 0, 1000, 20000, 100); 2433 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number), 2434 FCT_FLOW_CTL_REQ_EN_ | 2435 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) | 2436 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA)); 2437 2438 /* enable fifo */ 2439 lan743x_csr_write(adapter, FCT_RX_CTL, 2440 FCT_RX_CTL_EN_(rx->channel_number)); 2441 return 0; 2442 2443 napi_delete: 2444 netif_napi_del(&rx->napi); 2445 lan743x_rx_ring_cleanup(rx); 2446 2447 return_error: 2448 return ret; 2449 } 2450 2451 static int lan743x_netdev_close(struct net_device *netdev) 2452 { 2453 struct lan743x_adapter *adapter = netdev_priv(netdev); 2454 int index; 2455 2456 lan743x_tx_close(&adapter->tx[0]); 2457 2458 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) 2459 lan743x_rx_close(&adapter->rx[index]); 2460 2461 lan743x_ptp_close(adapter); 2462 2463 lan743x_phy_close(adapter); 2464 2465 lan743x_mac_close(adapter); 2466 2467 lan743x_intr_close(adapter); 2468 2469 return 0; 2470 } 2471 2472 static int lan743x_netdev_open(struct net_device *netdev) 2473 { 2474 struct lan743x_adapter *adapter = netdev_priv(netdev); 2475 int index; 2476 int ret; 2477 2478 ret = lan743x_intr_open(adapter); 2479 if (ret) 2480 goto return_error; 2481 2482 ret = lan743x_mac_open(adapter); 2483 if (ret) 2484 goto close_intr; 2485 2486 ret = lan743x_phy_open(adapter); 2487 if (ret) 2488 goto close_mac; 2489 2490 ret = lan743x_ptp_open(adapter); 2491 if (ret) 2492 goto close_phy; 2493 2494 lan743x_rfe_open(adapter); 2495 2496 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2497 ret = lan743x_rx_open(&adapter->rx[index]); 2498 if (ret) 2499 goto close_rx; 2500 } 2501 2502 ret = lan743x_tx_open(&adapter->tx[0]); 2503 if (ret) 2504 goto close_rx; 2505 2506 return 0; 2507 2508 close_rx: 2509 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2510 if (adapter->rx[index].ring_cpu_ptr) 2511 lan743x_rx_close(&adapter->rx[index]); 2512 } 2513 lan743x_ptp_close(adapter); 2514 2515 close_phy: 2516 lan743x_phy_close(adapter); 2517 2518 close_mac: 2519 lan743x_mac_close(adapter); 2520 2521 close_intr: 2522 lan743x_intr_close(adapter); 2523 2524 return_error: 2525 netif_warn(adapter, ifup, adapter->netdev, 2526 "Error opening LAN743x\n"); 2527 return ret; 2528 } 2529 2530 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb, 2531 struct net_device *netdev) 2532 { 2533 struct lan743x_adapter *adapter = netdev_priv(netdev); 2534 2535 return lan743x_tx_xmit_frame(&adapter->tx[0], skb); 2536 } 2537 2538 static int lan743x_netdev_ioctl(struct net_device *netdev, 2539 struct ifreq *ifr, int cmd) 2540 { 2541 if (!netif_running(netdev)) 2542 return -EINVAL; 2543 if (cmd == SIOCSHWTSTAMP) 2544 return lan743x_ptp_ioctl(netdev, ifr, cmd); 2545 return phy_mii_ioctl(netdev->phydev, ifr, cmd); 2546 } 2547 2548 static void lan743x_netdev_set_multicast(struct net_device *netdev) 2549 { 2550 struct lan743x_adapter *adapter = netdev_priv(netdev); 2551 2552 lan743x_rfe_set_multicast(adapter); 2553 } 2554 2555 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu) 2556 { 2557 struct lan743x_adapter *adapter = netdev_priv(netdev); 2558 int ret = 0; 2559 2560 ret = lan743x_mac_set_mtu(adapter, new_mtu); 2561 if (!ret) 2562 netdev->mtu = new_mtu; 2563 return ret; 2564 } 2565 2566 static void lan743x_netdev_get_stats64(struct net_device *netdev, 2567 struct rtnl_link_stats64 *stats) 2568 { 2569 struct lan743x_adapter *adapter = netdev_priv(netdev); 2570 2571 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES); 2572 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES); 2573 stats->rx_bytes = lan743x_csr_read(adapter, 2574 STAT_RX_UNICAST_BYTE_COUNT) + 2575 lan743x_csr_read(adapter, 2576 STAT_RX_BROADCAST_BYTE_COUNT) + 2577 lan743x_csr_read(adapter, 2578 STAT_RX_MULTICAST_BYTE_COUNT); 2579 stats->tx_bytes = lan743x_csr_read(adapter, 2580 STAT_TX_UNICAST_BYTE_COUNT) + 2581 lan743x_csr_read(adapter, 2582 STAT_TX_BROADCAST_BYTE_COUNT) + 2583 lan743x_csr_read(adapter, 2584 STAT_TX_MULTICAST_BYTE_COUNT); 2585 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) + 2586 lan743x_csr_read(adapter, 2587 STAT_RX_ALIGNMENT_ERRORS) + 2588 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) + 2589 lan743x_csr_read(adapter, 2590 STAT_RX_UNDERSIZE_FRAME_ERRORS) + 2591 lan743x_csr_read(adapter, 2592 STAT_RX_OVERSIZE_FRAME_ERRORS); 2593 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) + 2594 lan743x_csr_read(adapter, 2595 STAT_TX_EXCESS_DEFERRAL_ERRORS) + 2596 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS); 2597 stats->rx_dropped = lan743x_csr_read(adapter, 2598 STAT_RX_DROPPED_FRAMES); 2599 stats->tx_dropped = lan743x_csr_read(adapter, 2600 STAT_TX_EXCESSIVE_COLLISION); 2601 stats->multicast = lan743x_csr_read(adapter, 2602 STAT_RX_MULTICAST_FRAMES) + 2603 lan743x_csr_read(adapter, 2604 STAT_TX_MULTICAST_FRAMES); 2605 stats->collisions = lan743x_csr_read(adapter, 2606 STAT_TX_SINGLE_COLLISIONS) + 2607 lan743x_csr_read(adapter, 2608 STAT_TX_MULTIPLE_COLLISIONS) + 2609 lan743x_csr_read(adapter, 2610 STAT_TX_LATE_COLLISIONS); 2611 } 2612 2613 static int lan743x_netdev_set_mac_address(struct net_device *netdev, 2614 void *addr) 2615 { 2616 struct lan743x_adapter *adapter = netdev_priv(netdev); 2617 struct sockaddr *sock_addr = addr; 2618 int ret; 2619 2620 ret = eth_prepare_mac_addr_change(netdev, sock_addr); 2621 if (ret) 2622 return ret; 2623 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data); 2624 lan743x_mac_set_address(adapter, sock_addr->sa_data); 2625 lan743x_rfe_update_mac_address(adapter); 2626 return 0; 2627 } 2628 2629 static const struct net_device_ops lan743x_netdev_ops = { 2630 .ndo_open = lan743x_netdev_open, 2631 .ndo_stop = lan743x_netdev_close, 2632 .ndo_start_xmit = lan743x_netdev_xmit_frame, 2633 .ndo_do_ioctl = lan743x_netdev_ioctl, 2634 .ndo_set_rx_mode = lan743x_netdev_set_multicast, 2635 .ndo_change_mtu = lan743x_netdev_change_mtu, 2636 .ndo_get_stats64 = lan743x_netdev_get_stats64, 2637 .ndo_set_mac_address = lan743x_netdev_set_mac_address, 2638 }; 2639 2640 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter) 2641 { 2642 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2643 } 2644 2645 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter) 2646 { 2647 mdiobus_unregister(adapter->mdiobus); 2648 } 2649 2650 static void lan743x_full_cleanup(struct lan743x_adapter *adapter) 2651 { 2652 unregister_netdev(adapter->netdev); 2653 2654 lan743x_mdiobus_cleanup(adapter); 2655 lan743x_hardware_cleanup(adapter); 2656 lan743x_pci_cleanup(adapter); 2657 } 2658 2659 static int lan743x_hardware_init(struct lan743x_adapter *adapter, 2660 struct pci_dev *pdev) 2661 { 2662 struct lan743x_tx *tx; 2663 int index; 2664 int ret; 2665 2666 adapter->intr.irq = adapter->pdev->irq; 2667 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2668 mutex_init(&adapter->dp_lock); 2669 2670 ret = lan743x_gpio_init(adapter); 2671 if (ret) 2672 return ret; 2673 2674 ret = lan743x_mac_init(adapter); 2675 if (ret) 2676 return ret; 2677 2678 ret = lan743x_phy_init(adapter); 2679 if (ret) 2680 return ret; 2681 2682 ret = lan743x_ptp_init(adapter); 2683 if (ret) 2684 return ret; 2685 2686 lan743x_rfe_update_mac_address(adapter); 2687 2688 ret = lan743x_dmac_init(adapter); 2689 if (ret) 2690 return ret; 2691 2692 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2693 adapter->rx[index].adapter = adapter; 2694 adapter->rx[index].channel_number = index; 2695 } 2696 2697 tx = &adapter->tx[0]; 2698 tx->adapter = adapter; 2699 tx->channel_number = 0; 2700 spin_lock_init(&tx->ring_lock); 2701 return 0; 2702 } 2703 2704 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter) 2705 { 2706 int ret; 2707 2708 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev); 2709 if (!(adapter->mdiobus)) { 2710 ret = -ENOMEM; 2711 goto return_error; 2712 } 2713 2714 adapter->mdiobus->priv = (void *)adapter; 2715 adapter->mdiobus->read = lan743x_mdiobus_read; 2716 adapter->mdiobus->write = lan743x_mdiobus_write; 2717 adapter->mdiobus->name = "lan743x-mdiobus"; 2718 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE, 2719 "pci-%s", pci_name(adapter->pdev)); 2720 2721 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_) 2722 /* LAN7430 uses internal phy at address 1 */ 2723 adapter->mdiobus->phy_mask = ~(u32)BIT(1); 2724 2725 /* register mdiobus */ 2726 ret = mdiobus_register(adapter->mdiobus); 2727 if (ret < 0) 2728 goto return_error; 2729 return 0; 2730 2731 return_error: 2732 return ret; 2733 } 2734 2735 /* lan743x_pcidev_probe - Device Initialization Routine 2736 * @pdev: PCI device information struct 2737 * @id: entry in lan743x_pci_tbl 2738 * 2739 * Returns 0 on success, negative on failure 2740 * 2741 * initializes an adapter identified by a pci_dev structure. 2742 * The OS initialization, configuring of the adapter private structure, 2743 * and a hardware reset occur. 2744 **/ 2745 static int lan743x_pcidev_probe(struct pci_dev *pdev, 2746 const struct pci_device_id *id) 2747 { 2748 struct lan743x_adapter *adapter = NULL; 2749 struct net_device *netdev = NULL; 2750 int ret = -ENODEV; 2751 2752 netdev = devm_alloc_etherdev(&pdev->dev, 2753 sizeof(struct lan743x_adapter)); 2754 if (!netdev) 2755 goto return_error; 2756 2757 SET_NETDEV_DEV(netdev, &pdev->dev); 2758 pci_set_drvdata(pdev, netdev); 2759 adapter = netdev_priv(netdev); 2760 adapter->netdev = netdev; 2761 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE | 2762 NETIF_MSG_LINK | NETIF_MSG_IFUP | 2763 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED; 2764 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE; 2765 2766 ret = lan743x_pci_init(adapter, pdev); 2767 if (ret) 2768 goto return_error; 2769 2770 ret = lan743x_csr_init(adapter); 2771 if (ret) 2772 goto cleanup_pci; 2773 2774 ret = lan743x_hardware_init(adapter, pdev); 2775 if (ret) 2776 goto cleanup_pci; 2777 2778 ret = lan743x_mdiobus_init(adapter); 2779 if (ret) 2780 goto cleanup_hardware; 2781 2782 adapter->netdev->netdev_ops = &lan743x_netdev_ops; 2783 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops; 2784 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM; 2785 adapter->netdev->hw_features = adapter->netdev->features; 2786 2787 /* carrier off reporting is important to ethtool even BEFORE open */ 2788 netif_carrier_off(netdev); 2789 2790 ret = register_netdev(adapter->netdev); 2791 if (ret < 0) 2792 goto cleanup_mdiobus; 2793 return 0; 2794 2795 cleanup_mdiobus: 2796 lan743x_mdiobus_cleanup(adapter); 2797 2798 cleanup_hardware: 2799 lan743x_hardware_cleanup(adapter); 2800 2801 cleanup_pci: 2802 lan743x_pci_cleanup(adapter); 2803 2804 return_error: 2805 pr_warn("Initialization failed\n"); 2806 return ret; 2807 } 2808 2809 /** 2810 * lan743x_pcidev_remove - Device Removal Routine 2811 * @pdev: PCI device information struct 2812 * 2813 * this is called by the PCI subsystem to alert the driver 2814 * that it should release a PCI device. This could be caused by a 2815 * Hot-Plug event, or because the driver is going to be removed from 2816 * memory. 2817 **/ 2818 static void lan743x_pcidev_remove(struct pci_dev *pdev) 2819 { 2820 struct net_device *netdev = pci_get_drvdata(pdev); 2821 struct lan743x_adapter *adapter = netdev_priv(netdev); 2822 2823 lan743x_full_cleanup(adapter); 2824 } 2825 2826 static void lan743x_pcidev_shutdown(struct pci_dev *pdev) 2827 { 2828 struct net_device *netdev = pci_get_drvdata(pdev); 2829 struct lan743x_adapter *adapter = netdev_priv(netdev); 2830 2831 rtnl_lock(); 2832 netif_device_detach(netdev); 2833 2834 /* close netdev when netdev is at running state. 2835 * For instance, it is true when system goes to sleep by pm-suspend 2836 * However, it is false when system goes to sleep by suspend GUI menu 2837 */ 2838 if (netif_running(netdev)) 2839 lan743x_netdev_close(netdev); 2840 rtnl_unlock(); 2841 2842 #ifdef CONFIG_PM 2843 pci_save_state(pdev); 2844 #endif 2845 2846 /* clean up lan743x portion */ 2847 lan743x_hardware_cleanup(adapter); 2848 } 2849 2850 #ifdef CONFIG_PM_SLEEP 2851 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len) 2852 { 2853 return bitrev16(crc16(0xFFFF, buf, len)); 2854 } 2855 2856 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) 2857 { 2858 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; 2859 const u8 ipv6_multicast[3] = { 0x33, 0x33 }; 2860 const u8 arp_type[2] = { 0x08, 0x06 }; 2861 int mask_index; 2862 u32 pmtctl; 2863 u32 wucsr; 2864 u32 macrx; 2865 u16 crc; 2866 2867 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++) 2868 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0); 2869 2870 /* clear wake settings */ 2871 pmtctl = lan743x_csr_read(adapter, PMT_CTL); 2872 pmtctl |= PMT_CTL_WUPS_MASK_; 2873 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | 2874 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | 2875 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); 2876 2877 macrx = lan743x_csr_read(adapter, MAC_RX); 2878 2879 wucsr = 0; 2880 mask_index = 0; 2881 2882 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_; 2883 2884 if (adapter->wolopts & WAKE_PHY) { 2885 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_; 2886 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_; 2887 } 2888 if (adapter->wolopts & WAKE_MAGIC) { 2889 wucsr |= MAC_WUCSR_MPEN_; 2890 macrx |= MAC_RX_RXEN_; 2891 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2892 } 2893 if (adapter->wolopts & WAKE_UCAST) { 2894 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_; 2895 macrx |= MAC_RX_RXEN_; 2896 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2897 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2898 } 2899 if (adapter->wolopts & WAKE_BCAST) { 2900 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_; 2901 macrx |= MAC_RX_RXEN_; 2902 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2903 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2904 } 2905 if (adapter->wolopts & WAKE_MCAST) { 2906 /* IPv4 multicast */ 2907 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3); 2908 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2909 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2910 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2911 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2912 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7); 2913 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2914 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2915 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2916 mask_index++; 2917 2918 /* IPv6 multicast */ 2919 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2); 2920 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2921 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2922 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2923 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2924 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3); 2925 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2926 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2927 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2928 mask_index++; 2929 2930 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 2931 macrx |= MAC_RX_RXEN_; 2932 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2933 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2934 } 2935 if (adapter->wolopts & WAKE_ARP) { 2936 /* set MAC_WUF_CFG & WUF_MASK 2937 * for packettype (offset 12,13) = ARP (0x0806) 2938 */ 2939 crc = lan743x_pm_wakeframe_crc16(arp_type, 2); 2940 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2941 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ | 2942 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2943 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2944 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000); 2945 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2946 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2947 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2948 mask_index++; 2949 2950 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 2951 macrx |= MAC_RX_RXEN_; 2952 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2953 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2954 } 2955 2956 lan743x_csr_write(adapter, MAC_WUCSR, wucsr); 2957 lan743x_csr_write(adapter, PMT_CTL, pmtctl); 2958 lan743x_csr_write(adapter, MAC_RX, macrx); 2959 } 2960 2961 static int lan743x_pm_suspend(struct device *dev) 2962 { 2963 struct pci_dev *pdev = to_pci_dev(dev); 2964 struct net_device *netdev = pci_get_drvdata(pdev); 2965 struct lan743x_adapter *adapter = netdev_priv(netdev); 2966 int ret; 2967 2968 lan743x_pcidev_shutdown(pdev); 2969 2970 /* clear all wakes */ 2971 lan743x_csr_write(adapter, MAC_WUCSR, 0); 2972 lan743x_csr_write(adapter, MAC_WUCSR2, 0); 2973 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF); 2974 2975 if (adapter->wolopts) 2976 lan743x_pm_set_wol(adapter); 2977 2978 /* Host sets PME_En, put D3hot */ 2979 ret = pci_prepare_to_sleep(pdev); 2980 2981 return 0; 2982 } 2983 2984 static int lan743x_pm_resume(struct device *dev) 2985 { 2986 struct pci_dev *pdev = to_pci_dev(dev); 2987 struct net_device *netdev = pci_get_drvdata(pdev); 2988 struct lan743x_adapter *adapter = netdev_priv(netdev); 2989 int ret; 2990 2991 pci_set_power_state(pdev, PCI_D0); 2992 pci_restore_state(pdev); 2993 pci_save_state(pdev); 2994 2995 ret = lan743x_hardware_init(adapter, pdev); 2996 if (ret) { 2997 netif_err(adapter, probe, adapter->netdev, 2998 "lan743x_hardware_init returned %d\n", ret); 2999 } 3000 3001 /* open netdev when netdev is at running state while resume. 3002 * For instance, it is true when system wakesup after pm-suspend 3003 * However, it is false when system wakes up after suspend GUI menu 3004 */ 3005 if (netif_running(netdev)) 3006 lan743x_netdev_open(netdev); 3007 3008 netif_device_attach(netdev); 3009 3010 return 0; 3011 } 3012 3013 static const struct dev_pm_ops lan743x_pm_ops = { 3014 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume) 3015 }; 3016 #endif /* CONFIG_PM_SLEEP */ 3017 3018 static const struct pci_device_id lan743x_pcidev_tbl[] = { 3019 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) }, 3020 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) }, 3021 { 0, } 3022 }; 3023 3024 static struct pci_driver lan743x_pcidev_driver = { 3025 .name = DRIVER_NAME, 3026 .id_table = lan743x_pcidev_tbl, 3027 .probe = lan743x_pcidev_probe, 3028 .remove = lan743x_pcidev_remove, 3029 #ifdef CONFIG_PM_SLEEP 3030 .driver.pm = &lan743x_pm_ops, 3031 #endif 3032 .shutdown = lan743x_pcidev_shutdown, 3033 }; 3034 3035 module_pci_driver(lan743x_pcidev_driver); 3036 3037 MODULE_AUTHOR(DRIVER_AUTHOR); 3038 MODULE_DESCRIPTION(DRIVER_DESC); 3039 MODULE_LICENSE("GPL"); 3040