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 int ret; 806 807 netdev = adapter->netdev; 808 lan743x_csr_write(adapter, MAC_CR, MAC_CR_RST_); 809 ret = lan743x_csr_wait_for_bit(adapter, MAC_CR, MAC_CR_RST_, 810 0, 1000, 20000, 100); 811 if (ret) 812 return ret; 813 814 /* setup auto duplex, and speed detection */ 815 data = lan743x_csr_read(adapter, MAC_CR); 816 data |= MAC_CR_ADD_ | MAC_CR_ASD_; 817 data |= MAC_CR_CNTR_RST_; 818 lan743x_csr_write(adapter, MAC_CR, data); 819 820 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH); 821 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL); 822 adapter->mac_address[0] = mac_addr_lo & 0xFF; 823 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF; 824 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF; 825 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF; 826 adapter->mac_address[4] = mac_addr_hi & 0xFF; 827 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF; 828 829 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) && 830 mac_addr_lo == 0xFFFFFFFF) { 831 mac_address_valid = false; 832 } else if (!is_valid_ether_addr(adapter->mac_address)) { 833 mac_address_valid = false; 834 } 835 836 if (!mac_address_valid) 837 eth_random_addr(adapter->mac_address); 838 lan743x_mac_set_address(adapter, adapter->mac_address); 839 ether_addr_copy(netdev->dev_addr, adapter->mac_address); 840 return 0; 841 } 842 843 static int lan743x_mac_open(struct lan743x_adapter *adapter) 844 { 845 int ret = 0; 846 u32 temp; 847 848 temp = lan743x_csr_read(adapter, MAC_RX); 849 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_); 850 temp = lan743x_csr_read(adapter, MAC_TX); 851 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_); 852 return ret; 853 } 854 855 static void lan743x_mac_close(struct lan743x_adapter *adapter) 856 { 857 u32 temp; 858 859 temp = lan743x_csr_read(adapter, MAC_TX); 860 temp &= ~MAC_TX_TXEN_; 861 lan743x_csr_write(adapter, MAC_TX, temp); 862 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_, 863 1, 1000, 20000, 100); 864 865 temp = lan743x_csr_read(adapter, MAC_RX); 866 temp &= ~MAC_RX_RXEN_; 867 lan743x_csr_write(adapter, MAC_RX, temp); 868 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 869 1, 1000, 20000, 100); 870 } 871 872 static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter, 873 bool tx_enable, bool rx_enable) 874 { 875 u32 flow_setting = 0; 876 877 /* set maximum pause time because when fifo space frees 878 * up a zero value pause frame will be sent to release the pause 879 */ 880 flow_setting = MAC_FLOW_CR_FCPT_MASK_; 881 if (tx_enable) 882 flow_setting |= MAC_FLOW_CR_TX_FCEN_; 883 if (rx_enable) 884 flow_setting |= MAC_FLOW_CR_RX_FCEN_; 885 lan743x_csr_write(adapter, MAC_FLOW, flow_setting); 886 } 887 888 static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu) 889 { 890 int enabled = 0; 891 u32 mac_rx = 0; 892 893 mac_rx = lan743x_csr_read(adapter, MAC_RX); 894 if (mac_rx & MAC_RX_RXEN_) { 895 enabled = 1; 896 if (mac_rx & MAC_RX_RXD_) { 897 lan743x_csr_write(adapter, MAC_RX, mac_rx); 898 mac_rx &= ~MAC_RX_RXD_; 899 } 900 mac_rx &= ~MAC_RX_RXEN_; 901 lan743x_csr_write(adapter, MAC_RX, mac_rx); 902 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 903 1, 1000, 20000, 100); 904 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_); 905 } 906 907 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_); 908 mac_rx |= (((new_mtu + ETH_HLEN + 4) << MAC_RX_MAX_SIZE_SHIFT_) & 909 MAC_RX_MAX_SIZE_MASK_); 910 lan743x_csr_write(adapter, MAC_RX, mac_rx); 911 912 if (enabled) { 913 mac_rx |= MAC_RX_RXEN_; 914 lan743x_csr_write(adapter, MAC_RX, mac_rx); 915 } 916 return 0; 917 } 918 919 /* PHY */ 920 static int lan743x_phy_reset(struct lan743x_adapter *adapter) 921 { 922 u32 data; 923 924 /* Only called with in probe, and before mdiobus_register */ 925 926 data = lan743x_csr_read(adapter, PMT_CTL); 927 data |= PMT_CTL_ETH_PHY_RST_; 928 lan743x_csr_write(adapter, PMT_CTL, data); 929 930 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data, 931 (!(data & PMT_CTL_ETH_PHY_RST_) && 932 (data & PMT_CTL_READY_)), 933 50000, 1000000); 934 } 935 936 static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter, 937 u8 duplex, u16 local_adv, 938 u16 remote_adv) 939 { 940 struct lan743x_phy *phy = &adapter->phy; 941 u8 cap; 942 943 if (phy->fc_autoneg) 944 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv); 945 else 946 cap = phy->fc_request_control; 947 948 lan743x_mac_flow_ctrl_set_enables(adapter, 949 cap & FLOW_CTRL_TX, 950 cap & FLOW_CTRL_RX); 951 } 952 953 static int lan743x_phy_init(struct lan743x_adapter *adapter) 954 { 955 return lan743x_phy_reset(adapter); 956 } 957 958 static void lan743x_phy_link_status_change(struct net_device *netdev) 959 { 960 struct lan743x_adapter *adapter = netdev_priv(netdev); 961 struct phy_device *phydev = netdev->phydev; 962 963 phy_print_status(phydev); 964 if (phydev->state == PHY_RUNNING) { 965 struct ethtool_link_ksettings ksettings; 966 int remote_advertisement = 0; 967 int local_advertisement = 0; 968 969 memset(&ksettings, 0, sizeof(ksettings)); 970 phy_ethtool_get_link_ksettings(netdev, &ksettings); 971 local_advertisement = phy_read(phydev, MII_ADVERTISE); 972 if (local_advertisement < 0) 973 return; 974 975 remote_advertisement = phy_read(phydev, MII_LPA); 976 if (remote_advertisement < 0) 977 return; 978 979 lan743x_phy_update_flowcontrol(adapter, 980 ksettings.base.duplex, 981 local_advertisement, 982 remote_advertisement); 983 lan743x_ptp_update_latency(adapter, ksettings.base.speed); 984 } 985 } 986 987 static void lan743x_phy_close(struct lan743x_adapter *adapter) 988 { 989 struct net_device *netdev = adapter->netdev; 990 991 phy_stop(netdev->phydev); 992 phy_disconnect(netdev->phydev); 993 netdev->phydev = NULL; 994 } 995 996 static int lan743x_phy_open(struct lan743x_adapter *adapter) 997 { 998 struct lan743x_phy *phy = &adapter->phy; 999 struct phy_device *phydev; 1000 struct net_device *netdev; 1001 int ret = -EIO; 1002 1003 netdev = adapter->netdev; 1004 phydev = phy_find_first(adapter->mdiobus); 1005 if (!phydev) 1006 goto return_error; 1007 1008 ret = phy_connect_direct(netdev, phydev, 1009 lan743x_phy_link_status_change, 1010 PHY_INTERFACE_MODE_GMII); 1011 if (ret) 1012 goto return_error; 1013 1014 /* MAC doesn't support 1000T Half */ 1015 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); 1016 1017 /* support both flow controls */ 1018 phy_support_asym_pause(phydev); 1019 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); 1020 phy->fc_autoneg = phydev->autoneg; 1021 1022 phy_start(phydev); 1023 phy_start_aneg(phydev); 1024 return 0; 1025 1026 return_error: 1027 return ret; 1028 } 1029 1030 static void lan743x_rfe_open(struct lan743x_adapter *adapter) 1031 { 1032 lan743x_csr_write(adapter, RFE_RSS_CFG, 1033 RFE_RSS_CFG_UDP_IPV6_EX_ | 1034 RFE_RSS_CFG_TCP_IPV6_EX_ | 1035 RFE_RSS_CFG_IPV6_EX_ | 1036 RFE_RSS_CFG_UDP_IPV6_ | 1037 RFE_RSS_CFG_TCP_IPV6_ | 1038 RFE_RSS_CFG_IPV6_ | 1039 RFE_RSS_CFG_UDP_IPV4_ | 1040 RFE_RSS_CFG_TCP_IPV4_ | 1041 RFE_RSS_CFG_IPV4_ | 1042 RFE_RSS_CFG_VALID_HASH_BITS_ | 1043 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ | 1044 RFE_RSS_CFG_RSS_HASH_STORE_ | 1045 RFE_RSS_CFG_RSS_ENABLE_); 1046 } 1047 1048 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter) 1049 { 1050 u8 *mac_addr; 1051 u32 mac_addr_hi = 0; 1052 u32 mac_addr_lo = 0; 1053 1054 /* Add mac address to perfect Filter */ 1055 mac_addr = adapter->mac_address; 1056 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) | 1057 (((u32)(mac_addr[1])) << 8) | 1058 (((u32)(mac_addr[2])) << 16) | 1059 (((u32)(mac_addr[3])) << 24)); 1060 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) | 1061 (((u32)(mac_addr[5])) << 8)); 1062 1063 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo); 1064 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0), 1065 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_); 1066 } 1067 1068 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter) 1069 { 1070 struct net_device *netdev = adapter->netdev; 1071 u32 hash_table[DP_SEL_VHF_HASH_LEN]; 1072 u32 rfctl; 1073 u32 data; 1074 1075 rfctl = lan743x_csr_read(adapter, RFE_CTL); 1076 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ | 1077 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); 1078 rfctl |= RFE_CTL_AB_; 1079 if (netdev->flags & IFF_PROMISC) { 1080 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_; 1081 } else { 1082 if (netdev->flags & IFF_ALLMULTI) 1083 rfctl |= RFE_CTL_AM_; 1084 } 1085 1086 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32)); 1087 if (netdev_mc_count(netdev)) { 1088 struct netdev_hw_addr *ha; 1089 int i; 1090 1091 rfctl |= RFE_CTL_DA_PERFECT_; 1092 i = 1; 1093 netdev_for_each_mc_addr(ha, netdev) { 1094 /* set first 32 into Perfect Filter */ 1095 if (i < 33) { 1096 lan743x_csr_write(adapter, 1097 RFE_ADDR_FILT_HI(i), 0); 1098 data = ha->addr[3]; 1099 data = ha->addr[2] | (data << 8); 1100 data = ha->addr[1] | (data << 8); 1101 data = ha->addr[0] | (data << 8); 1102 lan743x_csr_write(adapter, 1103 RFE_ADDR_FILT_LO(i), data); 1104 data = ha->addr[5]; 1105 data = ha->addr[4] | (data << 8); 1106 data |= RFE_ADDR_FILT_HI_VALID_; 1107 lan743x_csr_write(adapter, 1108 RFE_ADDR_FILT_HI(i), data); 1109 } else { 1110 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >> 1111 23) & 0x1FF; 1112 hash_table[bitnum / 32] |= (1 << (bitnum % 32)); 1113 rfctl |= RFE_CTL_MCAST_HASH_; 1114 } 1115 i++; 1116 } 1117 } 1118 1119 lan743x_dp_write(adapter, DP_SEL_RFE_RAM, 1120 DP_SEL_VHF_VLAN_LEN, 1121 DP_SEL_VHF_HASH_LEN, hash_table); 1122 lan743x_csr_write(adapter, RFE_CTL, rfctl); 1123 } 1124 1125 static int lan743x_dmac_init(struct lan743x_adapter *adapter) 1126 { 1127 u32 data = 0; 1128 1129 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_); 1130 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_, 1131 0, 1000, 20000, 100); 1132 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) { 1133 case DMA_DESCRIPTOR_SPACING_16: 1134 data = DMAC_CFG_MAX_DSPACE_16_; 1135 break; 1136 case DMA_DESCRIPTOR_SPACING_32: 1137 data = DMAC_CFG_MAX_DSPACE_32_; 1138 break; 1139 case DMA_DESCRIPTOR_SPACING_64: 1140 data = DMAC_CFG_MAX_DSPACE_64_; 1141 break; 1142 case DMA_DESCRIPTOR_SPACING_128: 1143 data = DMAC_CFG_MAX_DSPACE_128_; 1144 break; 1145 default: 1146 return -EPERM; 1147 } 1148 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1149 data |= DMAC_CFG_COAL_EN_; 1150 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_; 1151 data |= DMAC_CFG_MAX_READ_REQ_SET_(6); 1152 lan743x_csr_write(adapter, DMAC_CFG, data); 1153 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1); 1154 data |= DMAC_COAL_CFG_TIMER_TX_START_; 1155 data |= DMAC_COAL_CFG_FLUSH_INTS_; 1156 data |= DMAC_COAL_CFG_INT_EXIT_COAL_; 1157 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_; 1158 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A); 1159 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C); 1160 lan743x_csr_write(adapter, DMAC_COAL_CFG, data); 1161 data = DMAC_OBFF_TX_THRES_SET_(0x08); 1162 data |= DMAC_OBFF_RX_THRES_SET_(0x0A); 1163 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data); 1164 return 0; 1165 } 1166 1167 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter, 1168 int tx_channel) 1169 { 1170 u32 dmac_cmd = 0; 1171 1172 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1173 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1174 DMAC_CMD_START_T_(tx_channel)), 1175 (dmac_cmd & 1176 DMAC_CMD_STOP_T_(tx_channel))); 1177 } 1178 1179 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter, 1180 int tx_channel) 1181 { 1182 int timeout = 100; 1183 int result = 0; 1184 1185 while (timeout && 1186 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) == 1187 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1188 usleep_range(1000, 20000); 1189 timeout--; 1190 } 1191 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1192 result = -ENODEV; 1193 return result; 1194 } 1195 1196 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter, 1197 int rx_channel) 1198 { 1199 u32 dmac_cmd = 0; 1200 1201 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1202 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1203 DMAC_CMD_START_R_(rx_channel)), 1204 (dmac_cmd & 1205 DMAC_CMD_STOP_R_(rx_channel))); 1206 } 1207 1208 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter, 1209 int rx_channel) 1210 { 1211 int timeout = 100; 1212 int result = 0; 1213 1214 while (timeout && 1215 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) == 1216 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1217 usleep_range(1000, 20000); 1218 timeout--; 1219 } 1220 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1221 result = -ENODEV; 1222 return result; 1223 } 1224 1225 static void lan743x_tx_release_desc(struct lan743x_tx *tx, 1226 int descriptor_index, bool cleanup) 1227 { 1228 struct lan743x_tx_buffer_info *buffer_info = NULL; 1229 struct lan743x_tx_descriptor *descriptor = NULL; 1230 u32 descriptor_type = 0; 1231 bool ignore_sync; 1232 1233 descriptor = &tx->ring_cpu_ptr[descriptor_index]; 1234 buffer_info = &tx->buffer_info[descriptor_index]; 1235 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE)) 1236 goto done; 1237 1238 descriptor_type = (descriptor->data0) & 1239 TX_DESC_DATA0_DTYPE_MASK_; 1240 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_) 1241 goto clean_up_data_descriptor; 1242 else 1243 goto clear_active; 1244 1245 clean_up_data_descriptor: 1246 if (buffer_info->dma_ptr) { 1247 if (buffer_info->flags & 1248 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) { 1249 dma_unmap_page(&tx->adapter->pdev->dev, 1250 buffer_info->dma_ptr, 1251 buffer_info->buffer_length, 1252 DMA_TO_DEVICE); 1253 } else { 1254 dma_unmap_single(&tx->adapter->pdev->dev, 1255 buffer_info->dma_ptr, 1256 buffer_info->buffer_length, 1257 DMA_TO_DEVICE); 1258 } 1259 buffer_info->dma_ptr = 0; 1260 buffer_info->buffer_length = 0; 1261 } 1262 if (!buffer_info->skb) 1263 goto clear_active; 1264 1265 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) { 1266 dev_kfree_skb(buffer_info->skb); 1267 goto clear_skb; 1268 } 1269 1270 if (cleanup) { 1271 lan743x_ptp_unrequest_tx_timestamp(tx->adapter); 1272 dev_kfree_skb(buffer_info->skb); 1273 } else { 1274 ignore_sync = (buffer_info->flags & 1275 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0; 1276 lan743x_ptp_tx_timestamp_skb(tx->adapter, 1277 buffer_info->skb, ignore_sync); 1278 } 1279 1280 clear_skb: 1281 buffer_info->skb = NULL; 1282 1283 clear_active: 1284 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE; 1285 1286 done: 1287 memset(buffer_info, 0, sizeof(*buffer_info)); 1288 memset(descriptor, 0, sizeof(*descriptor)); 1289 } 1290 1291 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index) 1292 { 1293 return ((++index) % tx->ring_size); 1294 } 1295 1296 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx) 1297 { 1298 while ((*tx->head_cpu_ptr) != (tx->last_head)) { 1299 lan743x_tx_release_desc(tx, tx->last_head, false); 1300 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1301 } 1302 } 1303 1304 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx) 1305 { 1306 u32 original_head = 0; 1307 1308 original_head = tx->last_head; 1309 do { 1310 lan743x_tx_release_desc(tx, tx->last_head, true); 1311 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1312 } while (tx->last_head != original_head); 1313 memset(tx->ring_cpu_ptr, 0, 1314 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size)); 1315 memset(tx->buffer_info, 0, 1316 sizeof(*tx->buffer_info) * (tx->ring_size)); 1317 } 1318 1319 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx, 1320 struct sk_buff *skb) 1321 { 1322 int result = 1; /* 1 for the main skb buffer */ 1323 int nr_frags = 0; 1324 1325 if (skb_is_gso(skb)) 1326 result++; /* requires an extension descriptor */ 1327 nr_frags = skb_shinfo(skb)->nr_frags; 1328 result += nr_frags; /* 1 for each fragment buffer */ 1329 return result; 1330 } 1331 1332 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx) 1333 { 1334 int last_head = tx->last_head; 1335 int last_tail = tx->last_tail; 1336 1337 if (last_tail >= last_head) 1338 return tx->ring_size - last_tail + last_head - 1; 1339 else 1340 return last_head - last_tail - 1; 1341 } 1342 1343 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx, 1344 bool enable_timestamping, 1345 bool enable_onestep_sync) 1346 { 1347 if (enable_timestamping) 1348 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED; 1349 else 1350 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED; 1351 if (enable_onestep_sync) 1352 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC; 1353 else 1354 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC; 1355 } 1356 1357 static int lan743x_tx_frame_start(struct lan743x_tx *tx, 1358 unsigned char *first_buffer, 1359 unsigned int first_buffer_length, 1360 unsigned int frame_length, 1361 bool time_stamp, 1362 bool check_sum) 1363 { 1364 /* called only from within lan743x_tx_xmit_frame. 1365 * assuming tx->ring_lock has already been acquired. 1366 */ 1367 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1368 struct lan743x_tx_buffer_info *buffer_info = NULL; 1369 struct lan743x_adapter *adapter = tx->adapter; 1370 struct device *dev = &adapter->pdev->dev; 1371 dma_addr_t dma_ptr; 1372 1373 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS; 1374 tx->frame_first = tx->last_tail; 1375 tx->frame_tail = tx->frame_first; 1376 1377 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1378 buffer_info = &tx->buffer_info[tx->frame_tail]; 1379 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length, 1380 DMA_TO_DEVICE); 1381 if (dma_mapping_error(dev, dma_ptr)) 1382 return -ENOMEM; 1383 1384 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1385 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1386 tx_descriptor->data3 = (frame_length << 16) & 1387 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1388 1389 buffer_info->skb = NULL; 1390 buffer_info->dma_ptr = dma_ptr; 1391 buffer_info->buffer_length = first_buffer_length; 1392 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1393 1394 tx->frame_data0 = (first_buffer_length & 1395 TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1396 TX_DESC_DATA0_DTYPE_DATA_ | 1397 TX_DESC_DATA0_FS_ | 1398 TX_DESC_DATA0_FCS_; 1399 if (time_stamp) 1400 tx->frame_data0 |= TX_DESC_DATA0_TSE_; 1401 1402 if (check_sum) 1403 tx->frame_data0 |= TX_DESC_DATA0_ICE_ | 1404 TX_DESC_DATA0_IPE_ | 1405 TX_DESC_DATA0_TPE_; 1406 1407 /* data0 will be programmed in one of other frame assembler functions */ 1408 return 0; 1409 } 1410 1411 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx, 1412 unsigned int frame_length) 1413 { 1414 /* called only from within lan743x_tx_xmit_frame. 1415 * assuming tx->ring_lock has already been acquired. 1416 */ 1417 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1418 struct lan743x_tx_buffer_info *buffer_info = NULL; 1419 1420 /* wrap up previous descriptor */ 1421 tx->frame_data0 |= TX_DESC_DATA0_EXT_; 1422 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1423 tx_descriptor->data0 = tx->frame_data0; 1424 1425 /* move to next descriptor */ 1426 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1427 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1428 buffer_info = &tx->buffer_info[tx->frame_tail]; 1429 1430 /* add extension descriptor */ 1431 tx_descriptor->data1 = 0; 1432 tx_descriptor->data2 = 0; 1433 tx_descriptor->data3 = 0; 1434 1435 buffer_info->skb = NULL; 1436 buffer_info->dma_ptr = 0; 1437 buffer_info->buffer_length = 0; 1438 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1439 1440 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) | 1441 TX_DESC_DATA0_DTYPE_EXT_ | 1442 TX_DESC_DATA0_EXT_LSO_; 1443 1444 /* data0 will be programmed in one of other frame assembler functions */ 1445 } 1446 1447 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx, 1448 const struct skb_frag_struct *fragment, 1449 unsigned int frame_length) 1450 { 1451 /* called only from within lan743x_tx_xmit_frame 1452 * assuming tx->ring_lock has already been acquired 1453 */ 1454 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1455 struct lan743x_tx_buffer_info *buffer_info = NULL; 1456 struct lan743x_adapter *adapter = tx->adapter; 1457 struct device *dev = &adapter->pdev->dev; 1458 unsigned int fragment_length = 0; 1459 dma_addr_t dma_ptr; 1460 1461 fragment_length = skb_frag_size(fragment); 1462 if (!fragment_length) 1463 return 0; 1464 1465 /* wrap up previous descriptor */ 1466 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1467 tx_descriptor->data0 = tx->frame_data0; 1468 1469 /* move to next descriptor */ 1470 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1471 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1472 buffer_info = &tx->buffer_info[tx->frame_tail]; 1473 dma_ptr = skb_frag_dma_map(dev, fragment, 1474 0, fragment_length, 1475 DMA_TO_DEVICE); 1476 if (dma_mapping_error(dev, dma_ptr)) { 1477 int desc_index; 1478 1479 /* cleanup all previously setup descriptors */ 1480 desc_index = tx->frame_first; 1481 while (desc_index != tx->frame_tail) { 1482 lan743x_tx_release_desc(tx, desc_index, true); 1483 desc_index = lan743x_tx_next_index(tx, desc_index); 1484 } 1485 dma_wmb(); 1486 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1487 tx->frame_first = 0; 1488 tx->frame_data0 = 0; 1489 tx->frame_tail = 0; 1490 return -ENOMEM; 1491 } 1492 1493 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1494 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1495 tx_descriptor->data3 = (frame_length << 16) & 1496 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1497 1498 buffer_info->skb = NULL; 1499 buffer_info->dma_ptr = dma_ptr; 1500 buffer_info->buffer_length = fragment_length; 1501 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1502 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT; 1503 1504 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1505 TX_DESC_DATA0_DTYPE_DATA_ | 1506 TX_DESC_DATA0_FCS_; 1507 1508 /* data0 will be programmed in one of other frame assembler functions */ 1509 return 0; 1510 } 1511 1512 static void lan743x_tx_frame_end(struct lan743x_tx *tx, 1513 struct sk_buff *skb, 1514 bool time_stamp, 1515 bool ignore_sync) 1516 { 1517 /* called only from within lan743x_tx_xmit_frame 1518 * assuming tx->ring_lock has already been acquired 1519 */ 1520 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1521 struct lan743x_tx_buffer_info *buffer_info = NULL; 1522 struct lan743x_adapter *adapter = tx->adapter; 1523 u32 tx_tail_flags = 0; 1524 1525 /* wrap up previous descriptor */ 1526 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1527 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1528 1529 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1530 buffer_info = &tx->buffer_info[tx->frame_tail]; 1531 buffer_info->skb = skb; 1532 if (time_stamp) 1533 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED; 1534 if (ignore_sync) 1535 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC; 1536 1537 tx_descriptor->data0 = tx->frame_data0; 1538 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1539 tx->last_tail = tx->frame_tail; 1540 1541 dma_wmb(); 1542 1543 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 1544 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_; 1545 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) 1546 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ | 1547 TX_TAIL_SET_TOP_INT_EN_; 1548 1549 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1550 tx_tail_flags | tx->frame_tail); 1551 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1552 } 1553 1554 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx, 1555 struct sk_buff *skb) 1556 { 1557 int required_number_of_descriptors = 0; 1558 unsigned int start_frame_length = 0; 1559 unsigned int frame_length = 0; 1560 unsigned int head_length = 0; 1561 unsigned long irq_flags = 0; 1562 bool do_timestamp = false; 1563 bool ignore_sync = false; 1564 int nr_frags = 0; 1565 bool gso = false; 1566 int j; 1567 1568 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb); 1569 1570 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1571 if (required_number_of_descriptors > 1572 lan743x_tx_get_avail_desc(tx)) { 1573 if (required_number_of_descriptors > (tx->ring_size - 1)) { 1574 dev_kfree_skb(skb); 1575 } else { 1576 /* save to overflow buffer */ 1577 tx->overflow_skb = skb; 1578 netif_stop_queue(tx->adapter->netdev); 1579 } 1580 goto unlock; 1581 } 1582 1583 /* space available, transmit skb */ 1584 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 1585 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) && 1586 (lan743x_ptp_request_tx_timestamp(tx->adapter))) { 1587 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 1588 do_timestamp = true; 1589 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC) 1590 ignore_sync = true; 1591 } 1592 head_length = skb_headlen(skb); 1593 frame_length = skb_pagelen(skb); 1594 nr_frags = skb_shinfo(skb)->nr_frags; 1595 start_frame_length = frame_length; 1596 gso = skb_is_gso(skb); 1597 if (gso) { 1598 start_frame_length = max(skb_shinfo(skb)->gso_size, 1599 (unsigned short)8); 1600 } 1601 1602 if (lan743x_tx_frame_start(tx, 1603 skb->data, head_length, 1604 start_frame_length, 1605 do_timestamp, 1606 skb->ip_summed == CHECKSUM_PARTIAL)) { 1607 dev_kfree_skb(skb); 1608 goto unlock; 1609 } 1610 1611 if (gso) 1612 lan743x_tx_frame_add_lso(tx, frame_length); 1613 1614 if (nr_frags <= 0) 1615 goto finish; 1616 1617 for (j = 0; j < nr_frags; j++) { 1618 const struct skb_frag_struct *frag; 1619 1620 frag = &(skb_shinfo(skb)->frags[j]); 1621 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) { 1622 /* upon error no need to call 1623 * lan743x_tx_frame_end 1624 * frame assembler clean up was performed inside 1625 * lan743x_tx_frame_add_fragment 1626 */ 1627 dev_kfree_skb(skb); 1628 goto unlock; 1629 } 1630 } 1631 1632 finish: 1633 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync); 1634 1635 unlock: 1636 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1637 return NETDEV_TX_OK; 1638 } 1639 1640 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight) 1641 { 1642 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi); 1643 struct lan743x_adapter *adapter = tx->adapter; 1644 bool start_transmitter = false; 1645 unsigned long irq_flags = 0; 1646 u32 ioc_bit = 0; 1647 u32 int_sts = 0; 1648 1649 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 1650 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 1651 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) 1652 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit); 1653 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1654 1655 /* clean up tx ring */ 1656 lan743x_tx_release_completed_descriptors(tx); 1657 if (netif_queue_stopped(adapter->netdev)) { 1658 if (tx->overflow_skb) { 1659 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <= 1660 lan743x_tx_get_avail_desc(tx)) 1661 start_transmitter = true; 1662 } else { 1663 netif_wake_queue(adapter->netdev); 1664 } 1665 } 1666 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1667 1668 if (start_transmitter) { 1669 /* space is now available, transmit overflow skb */ 1670 lan743x_tx_xmit_frame(tx, tx->overflow_skb); 1671 tx->overflow_skb = NULL; 1672 netif_wake_queue(adapter->netdev); 1673 } 1674 1675 if (!napi_complete_done(napi, weight)) 1676 goto done; 1677 1678 /* enable isr */ 1679 lan743x_csr_write(adapter, INT_EN_SET, 1680 INT_BIT_DMA_TX_(tx->channel_number)); 1681 lan743x_csr_read(adapter, INT_STS); 1682 1683 done: 1684 return weight; 1685 } 1686 1687 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx) 1688 { 1689 if (tx->head_cpu_ptr) { 1690 pci_free_consistent(tx->adapter->pdev, 1691 sizeof(*tx->head_cpu_ptr), 1692 (void *)(tx->head_cpu_ptr), 1693 tx->head_dma_ptr); 1694 tx->head_cpu_ptr = NULL; 1695 tx->head_dma_ptr = 0; 1696 } 1697 kfree(tx->buffer_info); 1698 tx->buffer_info = NULL; 1699 1700 if (tx->ring_cpu_ptr) { 1701 pci_free_consistent(tx->adapter->pdev, 1702 tx->ring_allocation_size, 1703 tx->ring_cpu_ptr, 1704 tx->ring_dma_ptr); 1705 tx->ring_allocation_size = 0; 1706 tx->ring_cpu_ptr = NULL; 1707 tx->ring_dma_ptr = 0; 1708 } 1709 tx->ring_size = 0; 1710 } 1711 1712 static int lan743x_tx_ring_init(struct lan743x_tx *tx) 1713 { 1714 size_t ring_allocation_size = 0; 1715 void *cpu_ptr = NULL; 1716 dma_addr_t dma_ptr; 1717 int ret = -ENOMEM; 1718 1719 tx->ring_size = LAN743X_TX_RING_SIZE; 1720 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) { 1721 ret = -EINVAL; 1722 goto cleanup; 1723 } 1724 ring_allocation_size = ALIGN(tx->ring_size * 1725 sizeof(struct lan743x_tx_descriptor), 1726 PAGE_SIZE); 1727 dma_ptr = 0; 1728 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1729 ring_allocation_size, &dma_ptr); 1730 if (!cpu_ptr) { 1731 ret = -ENOMEM; 1732 goto cleanup; 1733 } 1734 1735 tx->ring_allocation_size = ring_allocation_size; 1736 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr; 1737 tx->ring_dma_ptr = dma_ptr; 1738 1739 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL); 1740 if (!cpu_ptr) { 1741 ret = -ENOMEM; 1742 goto cleanup; 1743 } 1744 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr; 1745 dma_ptr = 0; 1746 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1747 sizeof(*tx->head_cpu_ptr), &dma_ptr); 1748 if (!cpu_ptr) { 1749 ret = -ENOMEM; 1750 goto cleanup; 1751 } 1752 1753 tx->head_cpu_ptr = cpu_ptr; 1754 tx->head_dma_ptr = dma_ptr; 1755 if (tx->head_dma_ptr & 0x3) { 1756 ret = -ENOMEM; 1757 goto cleanup; 1758 } 1759 1760 return 0; 1761 1762 cleanup: 1763 lan743x_tx_ring_cleanup(tx); 1764 return ret; 1765 } 1766 1767 static void lan743x_tx_close(struct lan743x_tx *tx) 1768 { 1769 struct lan743x_adapter *adapter = tx->adapter; 1770 1771 lan743x_csr_write(adapter, 1772 DMAC_CMD, 1773 DMAC_CMD_STOP_T_(tx->channel_number)); 1774 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number); 1775 1776 lan743x_csr_write(adapter, 1777 DMAC_INT_EN_CLR, 1778 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1779 lan743x_csr_write(adapter, INT_EN_CLR, 1780 INT_BIT_DMA_TX_(tx->channel_number)); 1781 napi_disable(&tx->napi); 1782 netif_napi_del(&tx->napi); 1783 1784 lan743x_csr_write(adapter, FCT_TX_CTL, 1785 FCT_TX_CTL_DIS_(tx->channel_number)); 1786 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1787 FCT_TX_CTL_EN_(tx->channel_number), 1788 0, 1000, 20000, 100); 1789 1790 lan743x_tx_release_all_descriptors(tx); 1791 1792 if (tx->overflow_skb) { 1793 dev_kfree_skb(tx->overflow_skb); 1794 tx->overflow_skb = NULL; 1795 } 1796 1797 lan743x_tx_ring_cleanup(tx); 1798 } 1799 1800 static int lan743x_tx_open(struct lan743x_tx *tx) 1801 { 1802 struct lan743x_adapter *adapter = NULL; 1803 u32 data = 0; 1804 int ret; 1805 1806 adapter = tx->adapter; 1807 ret = lan743x_tx_ring_init(tx); 1808 if (ret) 1809 return ret; 1810 1811 /* initialize fifo */ 1812 lan743x_csr_write(adapter, FCT_TX_CTL, 1813 FCT_TX_CTL_RESET_(tx->channel_number)); 1814 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1815 FCT_TX_CTL_RESET_(tx->channel_number), 1816 0, 1000, 20000, 100); 1817 1818 /* enable fifo */ 1819 lan743x_csr_write(adapter, FCT_TX_CTL, 1820 FCT_TX_CTL_EN_(tx->channel_number)); 1821 1822 /* reset tx channel */ 1823 lan743x_csr_write(adapter, DMAC_CMD, 1824 DMAC_CMD_TX_SWR_(tx->channel_number)); 1825 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 1826 DMAC_CMD_TX_SWR_(tx->channel_number), 1827 0, 1000, 20000, 100); 1828 1829 /* Write TX_BASE_ADDR */ 1830 lan743x_csr_write(adapter, 1831 TX_BASE_ADDRH(tx->channel_number), 1832 DMA_ADDR_HIGH32(tx->ring_dma_ptr)); 1833 lan743x_csr_write(adapter, 1834 TX_BASE_ADDRL(tx->channel_number), 1835 DMA_ADDR_LOW32(tx->ring_dma_ptr)); 1836 1837 /* Write TX_CFG_B */ 1838 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number)); 1839 data &= ~TX_CFG_B_TX_RING_LEN_MASK_; 1840 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_); 1841 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1842 data |= TX_CFG_B_TDMABL_512_; 1843 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data); 1844 1845 /* Write TX_CFG_A */ 1846 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_; 1847 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 1848 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_; 1849 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10); 1850 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04); 1851 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07); 1852 } 1853 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data); 1854 1855 /* Write TX_HEAD_WRITEBACK_ADDR */ 1856 lan743x_csr_write(adapter, 1857 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number), 1858 DMA_ADDR_HIGH32(tx->head_dma_ptr)); 1859 lan743x_csr_write(adapter, 1860 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number), 1861 DMA_ADDR_LOW32(tx->head_dma_ptr)); 1862 1863 /* set last head */ 1864 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number)); 1865 1866 /* write TX_TAIL */ 1867 tx->last_tail = 0; 1868 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1869 (u32)(tx->last_tail)); 1870 tx->vector_flags = lan743x_intr_get_vector_flags(adapter, 1871 INT_BIT_DMA_TX_ 1872 (tx->channel_number)); 1873 netif_napi_add(adapter->netdev, 1874 &tx->napi, lan743x_tx_napi_poll, 1875 tx->ring_size - 1); 1876 napi_enable(&tx->napi); 1877 1878 data = 0; 1879 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 1880 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_; 1881 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 1882 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_; 1883 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 1884 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_; 1885 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 1886 data |= TX_CFG_C_TX_INT_EN_R2C_; 1887 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data); 1888 1889 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)) 1890 lan743x_csr_write(adapter, INT_EN_SET, 1891 INT_BIT_DMA_TX_(tx->channel_number)); 1892 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 1893 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1894 1895 /* start dmac channel */ 1896 lan743x_csr_write(adapter, DMAC_CMD, 1897 DMAC_CMD_START_T_(tx->channel_number)); 1898 return 0; 1899 } 1900 1901 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index) 1902 { 1903 return ((++index) % rx->ring_size); 1904 } 1905 1906 static int lan743x_rx_allocate_ring_element(struct lan743x_rx *rx, int index) 1907 { 1908 struct lan743x_rx_buffer_info *buffer_info; 1909 struct lan743x_rx_descriptor *descriptor; 1910 int length = 0; 1911 1912 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1913 descriptor = &rx->ring_cpu_ptr[index]; 1914 buffer_info = &rx->buffer_info[index]; 1915 buffer_info->skb = __netdev_alloc_skb(rx->adapter->netdev, 1916 length, 1917 GFP_ATOMIC | GFP_DMA); 1918 if (!(buffer_info->skb)) 1919 return -ENOMEM; 1920 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev, 1921 buffer_info->skb->data, 1922 length, 1923 DMA_FROM_DEVICE); 1924 if (dma_mapping_error(&rx->adapter->pdev->dev, 1925 buffer_info->dma_ptr)) { 1926 buffer_info->dma_ptr = 0; 1927 return -ENOMEM; 1928 } 1929 1930 buffer_info->buffer_length = length; 1931 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1932 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1933 descriptor->data3 = 0; 1934 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1935 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1936 skb_reserve(buffer_info->skb, RX_HEAD_PADDING); 1937 1938 return 0; 1939 } 1940 1941 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index) 1942 { 1943 struct lan743x_rx_buffer_info *buffer_info; 1944 struct lan743x_rx_descriptor *descriptor; 1945 1946 descriptor = &rx->ring_cpu_ptr[index]; 1947 buffer_info = &rx->buffer_info[index]; 1948 1949 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1950 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1951 descriptor->data3 = 0; 1952 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1953 ((buffer_info->buffer_length) & 1954 RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1955 } 1956 1957 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index) 1958 { 1959 struct lan743x_rx_buffer_info *buffer_info; 1960 struct lan743x_rx_descriptor *descriptor; 1961 1962 descriptor = &rx->ring_cpu_ptr[index]; 1963 buffer_info = &rx->buffer_info[index]; 1964 1965 memset(descriptor, 0, sizeof(*descriptor)); 1966 1967 if (buffer_info->dma_ptr) { 1968 dma_unmap_single(&rx->adapter->pdev->dev, 1969 buffer_info->dma_ptr, 1970 buffer_info->buffer_length, 1971 DMA_FROM_DEVICE); 1972 buffer_info->dma_ptr = 0; 1973 } 1974 1975 if (buffer_info->skb) { 1976 dev_kfree_skb(buffer_info->skb); 1977 buffer_info->skb = NULL; 1978 } 1979 1980 memset(buffer_info, 0, sizeof(*buffer_info)); 1981 } 1982 1983 static int lan743x_rx_process_packet(struct lan743x_rx *rx) 1984 { 1985 struct skb_shared_hwtstamps *hwtstamps = NULL; 1986 int result = RX_PROCESS_RESULT_NOTHING_TO_DO; 1987 struct lan743x_rx_buffer_info *buffer_info; 1988 struct lan743x_rx_descriptor *descriptor; 1989 int current_head_index = -1; 1990 int extension_index = -1; 1991 int first_index = -1; 1992 int last_index = -1; 1993 1994 current_head_index = *rx->head_cpu_ptr; 1995 if (current_head_index < 0 || current_head_index >= rx->ring_size) 1996 goto done; 1997 1998 if (rx->last_head < 0 || rx->last_head >= rx->ring_size) 1999 goto done; 2000 2001 if (rx->last_head != current_head_index) { 2002 descriptor = &rx->ring_cpu_ptr[rx->last_head]; 2003 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2004 goto done; 2005 2006 if (!(descriptor->data0 & RX_DESC_DATA0_FS_)) 2007 goto done; 2008 2009 first_index = rx->last_head; 2010 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2011 last_index = rx->last_head; 2012 } else { 2013 int index; 2014 2015 index = lan743x_rx_next_index(rx, first_index); 2016 while (index != current_head_index) { 2017 descriptor = &rx->ring_cpu_ptr[index]; 2018 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2019 goto done; 2020 2021 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2022 last_index = index; 2023 break; 2024 } 2025 index = lan743x_rx_next_index(rx, index); 2026 } 2027 } 2028 if (last_index >= 0) { 2029 descriptor = &rx->ring_cpu_ptr[last_index]; 2030 if (descriptor->data0 & RX_DESC_DATA0_EXT_) { 2031 /* extension is expected to follow */ 2032 int index = lan743x_rx_next_index(rx, 2033 last_index); 2034 if (index != current_head_index) { 2035 descriptor = &rx->ring_cpu_ptr[index]; 2036 if (descriptor->data0 & 2037 RX_DESC_DATA0_OWN_) { 2038 goto done; 2039 } 2040 if (descriptor->data0 & 2041 RX_DESC_DATA0_EXT_) { 2042 extension_index = index; 2043 } else { 2044 goto done; 2045 } 2046 } else { 2047 /* extension is not yet available */ 2048 /* prevent processing of this packet */ 2049 first_index = -1; 2050 last_index = -1; 2051 } 2052 } 2053 } 2054 } 2055 if (first_index >= 0 && last_index >= 0) { 2056 int real_last_index = last_index; 2057 struct sk_buff *skb = NULL; 2058 u32 ts_sec = 0; 2059 u32 ts_nsec = 0; 2060 2061 /* packet is available */ 2062 if (first_index == last_index) { 2063 /* single buffer packet */ 2064 int packet_length; 2065 2066 buffer_info = &rx->buffer_info[first_index]; 2067 skb = buffer_info->skb; 2068 descriptor = &rx->ring_cpu_ptr[first_index]; 2069 2070 /* unmap from dma */ 2071 if (buffer_info->dma_ptr) { 2072 dma_unmap_single(&rx->adapter->pdev->dev, 2073 buffer_info->dma_ptr, 2074 buffer_info->buffer_length, 2075 DMA_FROM_DEVICE); 2076 buffer_info->dma_ptr = 0; 2077 buffer_info->buffer_length = 0; 2078 } 2079 buffer_info->skb = NULL; 2080 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_ 2081 (descriptor->data0); 2082 skb_put(skb, packet_length - 4); 2083 skb->protocol = eth_type_trans(skb, 2084 rx->adapter->netdev); 2085 lan743x_rx_allocate_ring_element(rx, first_index); 2086 } else { 2087 int index = first_index; 2088 2089 /* multi buffer packet not supported */ 2090 /* this should not happen since 2091 * buffers are allocated to be at least jumbo size 2092 */ 2093 2094 /* clean up buffers */ 2095 if (first_index <= last_index) { 2096 while ((index >= first_index) && 2097 (index <= last_index)) { 2098 lan743x_rx_release_ring_element(rx, 2099 index); 2100 lan743x_rx_allocate_ring_element(rx, 2101 index); 2102 index = lan743x_rx_next_index(rx, 2103 index); 2104 } 2105 } else { 2106 while ((index >= first_index) || 2107 (index <= last_index)) { 2108 lan743x_rx_release_ring_element(rx, 2109 index); 2110 lan743x_rx_allocate_ring_element(rx, 2111 index); 2112 index = lan743x_rx_next_index(rx, 2113 index); 2114 } 2115 } 2116 } 2117 2118 if (extension_index >= 0) { 2119 descriptor = &rx->ring_cpu_ptr[extension_index]; 2120 buffer_info = &rx->buffer_info[extension_index]; 2121 2122 ts_sec = descriptor->data1; 2123 ts_nsec = (descriptor->data2 & 2124 RX_DESC_DATA2_TS_NS_MASK_); 2125 lan743x_rx_reuse_ring_element(rx, extension_index); 2126 real_last_index = extension_index; 2127 } 2128 2129 if (!skb) { 2130 result = RX_PROCESS_RESULT_PACKET_DROPPED; 2131 goto move_forward; 2132 } 2133 2134 if (extension_index < 0) 2135 goto pass_packet_to_os; 2136 hwtstamps = skb_hwtstamps(skb); 2137 if (hwtstamps) 2138 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec); 2139 2140 pass_packet_to_os: 2141 /* pass packet to OS */ 2142 napi_gro_receive(&rx->napi, skb); 2143 result = RX_PROCESS_RESULT_PACKET_RECEIVED; 2144 2145 move_forward: 2146 /* push tail and head forward */ 2147 rx->last_tail = real_last_index; 2148 rx->last_head = lan743x_rx_next_index(rx, real_last_index); 2149 } 2150 done: 2151 return result; 2152 } 2153 2154 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight) 2155 { 2156 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi); 2157 struct lan743x_adapter *adapter = rx->adapter; 2158 u32 rx_tail_flags = 0; 2159 int count; 2160 2161 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) { 2162 /* clear int status bit before reading packet */ 2163 lan743x_csr_write(adapter, DMAC_INT_STS, 2164 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2165 } 2166 count = 0; 2167 while (count < weight) { 2168 int rx_process_result = -1; 2169 2170 rx_process_result = lan743x_rx_process_packet(rx); 2171 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) { 2172 count++; 2173 } else if (rx_process_result == 2174 RX_PROCESS_RESULT_NOTHING_TO_DO) { 2175 break; 2176 } else if (rx_process_result == 2177 RX_PROCESS_RESULT_PACKET_DROPPED) { 2178 continue; 2179 } 2180 } 2181 rx->frame_count += count; 2182 if (count == weight) 2183 goto done; 2184 2185 if (!napi_complete_done(napi, count)) 2186 goto done; 2187 2188 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 2189 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_; 2190 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) { 2191 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_; 2192 } else { 2193 lan743x_csr_write(adapter, INT_EN_SET, 2194 INT_BIT_DMA_RX_(rx->channel_number)); 2195 } 2196 2197 /* update RX_TAIL */ 2198 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2199 rx_tail_flags | rx->last_tail); 2200 done: 2201 return count; 2202 } 2203 2204 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx) 2205 { 2206 if (rx->buffer_info && rx->ring_cpu_ptr) { 2207 int index; 2208 2209 for (index = 0; index < rx->ring_size; index++) 2210 lan743x_rx_release_ring_element(rx, index); 2211 } 2212 2213 if (rx->head_cpu_ptr) { 2214 pci_free_consistent(rx->adapter->pdev, 2215 sizeof(*rx->head_cpu_ptr), 2216 rx->head_cpu_ptr, 2217 rx->head_dma_ptr); 2218 rx->head_cpu_ptr = NULL; 2219 rx->head_dma_ptr = 0; 2220 } 2221 2222 kfree(rx->buffer_info); 2223 rx->buffer_info = NULL; 2224 2225 if (rx->ring_cpu_ptr) { 2226 pci_free_consistent(rx->adapter->pdev, 2227 rx->ring_allocation_size, 2228 rx->ring_cpu_ptr, 2229 rx->ring_dma_ptr); 2230 rx->ring_allocation_size = 0; 2231 rx->ring_cpu_ptr = NULL; 2232 rx->ring_dma_ptr = 0; 2233 } 2234 2235 rx->ring_size = 0; 2236 rx->last_head = 0; 2237 } 2238 2239 static int lan743x_rx_ring_init(struct lan743x_rx *rx) 2240 { 2241 size_t ring_allocation_size = 0; 2242 dma_addr_t dma_ptr = 0; 2243 void *cpu_ptr = NULL; 2244 int ret = -ENOMEM; 2245 int index = 0; 2246 2247 rx->ring_size = LAN743X_RX_RING_SIZE; 2248 if (rx->ring_size <= 1) { 2249 ret = -EINVAL; 2250 goto cleanup; 2251 } 2252 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) { 2253 ret = -EINVAL; 2254 goto cleanup; 2255 } 2256 ring_allocation_size = ALIGN(rx->ring_size * 2257 sizeof(struct lan743x_rx_descriptor), 2258 PAGE_SIZE); 2259 dma_ptr = 0; 2260 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2261 ring_allocation_size, &dma_ptr); 2262 if (!cpu_ptr) { 2263 ret = -ENOMEM; 2264 goto cleanup; 2265 } 2266 rx->ring_allocation_size = ring_allocation_size; 2267 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr; 2268 rx->ring_dma_ptr = dma_ptr; 2269 2270 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info), 2271 GFP_KERNEL); 2272 if (!cpu_ptr) { 2273 ret = -ENOMEM; 2274 goto cleanup; 2275 } 2276 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr; 2277 dma_ptr = 0; 2278 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2279 sizeof(*rx->head_cpu_ptr), &dma_ptr); 2280 if (!cpu_ptr) { 2281 ret = -ENOMEM; 2282 goto cleanup; 2283 } 2284 2285 rx->head_cpu_ptr = cpu_ptr; 2286 rx->head_dma_ptr = dma_ptr; 2287 if (rx->head_dma_ptr & 0x3) { 2288 ret = -ENOMEM; 2289 goto cleanup; 2290 } 2291 2292 rx->last_head = 0; 2293 for (index = 0; index < rx->ring_size; index++) { 2294 ret = lan743x_rx_allocate_ring_element(rx, index); 2295 if (ret) 2296 goto cleanup; 2297 } 2298 return 0; 2299 2300 cleanup: 2301 lan743x_rx_ring_cleanup(rx); 2302 return ret; 2303 } 2304 2305 static void lan743x_rx_close(struct lan743x_rx *rx) 2306 { 2307 struct lan743x_adapter *adapter = rx->adapter; 2308 2309 lan743x_csr_write(adapter, FCT_RX_CTL, 2310 FCT_RX_CTL_DIS_(rx->channel_number)); 2311 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2312 FCT_RX_CTL_EN_(rx->channel_number), 2313 0, 1000, 20000, 100); 2314 2315 lan743x_csr_write(adapter, DMAC_CMD, 2316 DMAC_CMD_STOP_R_(rx->channel_number)); 2317 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number); 2318 2319 lan743x_csr_write(adapter, DMAC_INT_EN_CLR, 2320 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2321 lan743x_csr_write(adapter, INT_EN_CLR, 2322 INT_BIT_DMA_RX_(rx->channel_number)); 2323 napi_disable(&rx->napi); 2324 2325 netif_napi_del(&rx->napi); 2326 2327 lan743x_rx_ring_cleanup(rx); 2328 } 2329 2330 static int lan743x_rx_open(struct lan743x_rx *rx) 2331 { 2332 struct lan743x_adapter *adapter = rx->adapter; 2333 u32 data = 0; 2334 int ret; 2335 2336 rx->frame_count = 0; 2337 ret = lan743x_rx_ring_init(rx); 2338 if (ret) 2339 goto return_error; 2340 2341 netif_napi_add(adapter->netdev, 2342 &rx->napi, lan743x_rx_napi_poll, 2343 rx->ring_size - 1); 2344 2345 lan743x_csr_write(adapter, DMAC_CMD, 2346 DMAC_CMD_RX_SWR_(rx->channel_number)); 2347 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 2348 DMAC_CMD_RX_SWR_(rx->channel_number), 2349 0, 1000, 20000, 100); 2350 2351 /* set ring base address */ 2352 lan743x_csr_write(adapter, 2353 RX_BASE_ADDRH(rx->channel_number), 2354 DMA_ADDR_HIGH32(rx->ring_dma_ptr)); 2355 lan743x_csr_write(adapter, 2356 RX_BASE_ADDRL(rx->channel_number), 2357 DMA_ADDR_LOW32(rx->ring_dma_ptr)); 2358 2359 /* set rx write back address */ 2360 lan743x_csr_write(adapter, 2361 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number), 2362 DMA_ADDR_HIGH32(rx->head_dma_ptr)); 2363 lan743x_csr_write(adapter, 2364 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number), 2365 DMA_ADDR_LOW32(rx->head_dma_ptr)); 2366 data = RX_CFG_A_RX_HP_WB_EN_; 2367 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 2368 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ | 2369 RX_CFG_A_RX_WB_THRES_SET_(0x7) | 2370 RX_CFG_A_RX_PF_THRES_SET_(16) | 2371 RX_CFG_A_RX_PF_PRI_THRES_SET_(4)); 2372 } 2373 2374 /* set RX_CFG_A */ 2375 lan743x_csr_write(adapter, 2376 RX_CFG_A(rx->channel_number), data); 2377 2378 /* set RX_CFG_B */ 2379 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number)); 2380 data &= ~RX_CFG_B_RX_PAD_MASK_; 2381 if (!RX_HEAD_PADDING) 2382 data |= RX_CFG_B_RX_PAD_0_; 2383 else 2384 data |= RX_CFG_B_RX_PAD_2_; 2385 data &= ~RX_CFG_B_RX_RING_LEN_MASK_; 2386 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_); 2387 data |= RX_CFG_B_TS_ALL_RX_; 2388 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 2389 data |= RX_CFG_B_RDMABL_512_; 2390 2391 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data); 2392 rx->vector_flags = lan743x_intr_get_vector_flags(adapter, 2393 INT_BIT_DMA_RX_ 2394 (rx->channel_number)); 2395 2396 /* set RX_CFG_C */ 2397 data = 0; 2398 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 2399 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_; 2400 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 2401 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_; 2402 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 2403 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_; 2404 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 2405 data |= RX_CFG_C_RX_INT_EN_R2C_; 2406 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data); 2407 2408 rx->last_tail = ((u32)(rx->ring_size - 1)); 2409 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2410 rx->last_tail); 2411 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number)); 2412 if (rx->last_head) { 2413 ret = -EIO; 2414 goto napi_delete; 2415 } 2416 2417 napi_enable(&rx->napi); 2418 2419 lan743x_csr_write(adapter, INT_EN_SET, 2420 INT_BIT_DMA_RX_(rx->channel_number)); 2421 lan743x_csr_write(adapter, DMAC_INT_STS, 2422 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2423 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 2424 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2425 lan743x_csr_write(adapter, DMAC_CMD, 2426 DMAC_CMD_START_R_(rx->channel_number)); 2427 2428 /* initialize fifo */ 2429 lan743x_csr_write(adapter, FCT_RX_CTL, 2430 FCT_RX_CTL_RESET_(rx->channel_number)); 2431 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2432 FCT_RX_CTL_RESET_(rx->channel_number), 2433 0, 1000, 20000, 100); 2434 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number), 2435 FCT_FLOW_CTL_REQ_EN_ | 2436 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) | 2437 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA)); 2438 2439 /* enable fifo */ 2440 lan743x_csr_write(adapter, FCT_RX_CTL, 2441 FCT_RX_CTL_EN_(rx->channel_number)); 2442 return 0; 2443 2444 napi_delete: 2445 netif_napi_del(&rx->napi); 2446 lan743x_rx_ring_cleanup(rx); 2447 2448 return_error: 2449 return ret; 2450 } 2451 2452 static int lan743x_netdev_close(struct net_device *netdev) 2453 { 2454 struct lan743x_adapter *adapter = netdev_priv(netdev); 2455 int index; 2456 2457 lan743x_tx_close(&adapter->tx[0]); 2458 2459 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) 2460 lan743x_rx_close(&adapter->rx[index]); 2461 2462 lan743x_ptp_close(adapter); 2463 2464 lan743x_phy_close(adapter); 2465 2466 lan743x_mac_close(adapter); 2467 2468 lan743x_intr_close(adapter); 2469 2470 return 0; 2471 } 2472 2473 static int lan743x_netdev_open(struct net_device *netdev) 2474 { 2475 struct lan743x_adapter *adapter = netdev_priv(netdev); 2476 int index; 2477 int ret; 2478 2479 ret = lan743x_intr_open(adapter); 2480 if (ret) 2481 goto return_error; 2482 2483 ret = lan743x_mac_open(adapter); 2484 if (ret) 2485 goto close_intr; 2486 2487 ret = lan743x_phy_open(adapter); 2488 if (ret) 2489 goto close_mac; 2490 2491 ret = lan743x_ptp_open(adapter); 2492 if (ret) 2493 goto close_phy; 2494 2495 lan743x_rfe_open(adapter); 2496 2497 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2498 ret = lan743x_rx_open(&adapter->rx[index]); 2499 if (ret) 2500 goto close_rx; 2501 } 2502 2503 ret = lan743x_tx_open(&adapter->tx[0]); 2504 if (ret) 2505 goto close_rx; 2506 2507 return 0; 2508 2509 close_rx: 2510 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2511 if (adapter->rx[index].ring_cpu_ptr) 2512 lan743x_rx_close(&adapter->rx[index]); 2513 } 2514 lan743x_ptp_close(adapter); 2515 2516 close_phy: 2517 lan743x_phy_close(adapter); 2518 2519 close_mac: 2520 lan743x_mac_close(adapter); 2521 2522 close_intr: 2523 lan743x_intr_close(adapter); 2524 2525 return_error: 2526 netif_warn(adapter, ifup, adapter->netdev, 2527 "Error opening LAN743x\n"); 2528 return ret; 2529 } 2530 2531 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb, 2532 struct net_device *netdev) 2533 { 2534 struct lan743x_adapter *adapter = netdev_priv(netdev); 2535 2536 return lan743x_tx_xmit_frame(&adapter->tx[0], skb); 2537 } 2538 2539 static int lan743x_netdev_ioctl(struct net_device *netdev, 2540 struct ifreq *ifr, int cmd) 2541 { 2542 if (!netif_running(netdev)) 2543 return -EINVAL; 2544 if (cmd == SIOCSHWTSTAMP) 2545 return lan743x_ptp_ioctl(netdev, ifr, cmd); 2546 return phy_mii_ioctl(netdev->phydev, ifr, cmd); 2547 } 2548 2549 static void lan743x_netdev_set_multicast(struct net_device *netdev) 2550 { 2551 struct lan743x_adapter *adapter = netdev_priv(netdev); 2552 2553 lan743x_rfe_set_multicast(adapter); 2554 } 2555 2556 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu) 2557 { 2558 struct lan743x_adapter *adapter = netdev_priv(netdev); 2559 int ret = 0; 2560 2561 ret = lan743x_mac_set_mtu(adapter, new_mtu); 2562 if (!ret) 2563 netdev->mtu = new_mtu; 2564 return ret; 2565 } 2566 2567 static void lan743x_netdev_get_stats64(struct net_device *netdev, 2568 struct rtnl_link_stats64 *stats) 2569 { 2570 struct lan743x_adapter *adapter = netdev_priv(netdev); 2571 2572 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES); 2573 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES); 2574 stats->rx_bytes = lan743x_csr_read(adapter, 2575 STAT_RX_UNICAST_BYTE_COUNT) + 2576 lan743x_csr_read(adapter, 2577 STAT_RX_BROADCAST_BYTE_COUNT) + 2578 lan743x_csr_read(adapter, 2579 STAT_RX_MULTICAST_BYTE_COUNT); 2580 stats->tx_bytes = lan743x_csr_read(adapter, 2581 STAT_TX_UNICAST_BYTE_COUNT) + 2582 lan743x_csr_read(adapter, 2583 STAT_TX_BROADCAST_BYTE_COUNT) + 2584 lan743x_csr_read(adapter, 2585 STAT_TX_MULTICAST_BYTE_COUNT); 2586 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) + 2587 lan743x_csr_read(adapter, 2588 STAT_RX_ALIGNMENT_ERRORS) + 2589 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) + 2590 lan743x_csr_read(adapter, 2591 STAT_RX_UNDERSIZE_FRAME_ERRORS) + 2592 lan743x_csr_read(adapter, 2593 STAT_RX_OVERSIZE_FRAME_ERRORS); 2594 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) + 2595 lan743x_csr_read(adapter, 2596 STAT_TX_EXCESS_DEFERRAL_ERRORS) + 2597 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS); 2598 stats->rx_dropped = lan743x_csr_read(adapter, 2599 STAT_RX_DROPPED_FRAMES); 2600 stats->tx_dropped = lan743x_csr_read(adapter, 2601 STAT_TX_EXCESSIVE_COLLISION); 2602 stats->multicast = lan743x_csr_read(adapter, 2603 STAT_RX_MULTICAST_FRAMES) + 2604 lan743x_csr_read(adapter, 2605 STAT_TX_MULTICAST_FRAMES); 2606 stats->collisions = lan743x_csr_read(adapter, 2607 STAT_TX_SINGLE_COLLISIONS) + 2608 lan743x_csr_read(adapter, 2609 STAT_TX_MULTIPLE_COLLISIONS) + 2610 lan743x_csr_read(adapter, 2611 STAT_TX_LATE_COLLISIONS); 2612 } 2613 2614 static int lan743x_netdev_set_mac_address(struct net_device *netdev, 2615 void *addr) 2616 { 2617 struct lan743x_adapter *adapter = netdev_priv(netdev); 2618 struct sockaddr *sock_addr = addr; 2619 int ret; 2620 2621 ret = eth_prepare_mac_addr_change(netdev, sock_addr); 2622 if (ret) 2623 return ret; 2624 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data); 2625 lan743x_mac_set_address(adapter, sock_addr->sa_data); 2626 lan743x_rfe_update_mac_address(adapter); 2627 return 0; 2628 } 2629 2630 static const struct net_device_ops lan743x_netdev_ops = { 2631 .ndo_open = lan743x_netdev_open, 2632 .ndo_stop = lan743x_netdev_close, 2633 .ndo_start_xmit = lan743x_netdev_xmit_frame, 2634 .ndo_do_ioctl = lan743x_netdev_ioctl, 2635 .ndo_set_rx_mode = lan743x_netdev_set_multicast, 2636 .ndo_change_mtu = lan743x_netdev_change_mtu, 2637 .ndo_get_stats64 = lan743x_netdev_get_stats64, 2638 .ndo_set_mac_address = lan743x_netdev_set_mac_address, 2639 }; 2640 2641 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter) 2642 { 2643 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2644 } 2645 2646 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter) 2647 { 2648 mdiobus_unregister(adapter->mdiobus); 2649 } 2650 2651 static void lan743x_full_cleanup(struct lan743x_adapter *adapter) 2652 { 2653 unregister_netdev(adapter->netdev); 2654 2655 lan743x_mdiobus_cleanup(adapter); 2656 lan743x_hardware_cleanup(adapter); 2657 lan743x_pci_cleanup(adapter); 2658 } 2659 2660 static int lan743x_hardware_init(struct lan743x_adapter *adapter, 2661 struct pci_dev *pdev) 2662 { 2663 struct lan743x_tx *tx; 2664 int index; 2665 int ret; 2666 2667 adapter->intr.irq = adapter->pdev->irq; 2668 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2669 mutex_init(&adapter->dp_lock); 2670 2671 ret = lan743x_gpio_init(adapter); 2672 if (ret) 2673 return ret; 2674 2675 ret = lan743x_mac_init(adapter); 2676 if (ret) 2677 return ret; 2678 2679 ret = lan743x_phy_init(adapter); 2680 if (ret) 2681 return ret; 2682 2683 ret = lan743x_ptp_init(adapter); 2684 if (ret) 2685 return ret; 2686 2687 lan743x_rfe_update_mac_address(adapter); 2688 2689 ret = lan743x_dmac_init(adapter); 2690 if (ret) 2691 return ret; 2692 2693 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2694 adapter->rx[index].adapter = adapter; 2695 adapter->rx[index].channel_number = index; 2696 } 2697 2698 tx = &adapter->tx[0]; 2699 tx->adapter = adapter; 2700 tx->channel_number = 0; 2701 spin_lock_init(&tx->ring_lock); 2702 return 0; 2703 } 2704 2705 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter) 2706 { 2707 int ret; 2708 2709 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev); 2710 if (!(adapter->mdiobus)) { 2711 ret = -ENOMEM; 2712 goto return_error; 2713 } 2714 2715 adapter->mdiobus->priv = (void *)adapter; 2716 adapter->mdiobus->read = lan743x_mdiobus_read; 2717 adapter->mdiobus->write = lan743x_mdiobus_write; 2718 adapter->mdiobus->name = "lan743x-mdiobus"; 2719 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE, 2720 "pci-%s", pci_name(adapter->pdev)); 2721 2722 /* set to internal PHY id */ 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 { 0, } 3021 }; 3022 3023 static struct pci_driver lan743x_pcidev_driver = { 3024 .name = DRIVER_NAME, 3025 .id_table = lan743x_pcidev_tbl, 3026 .probe = lan743x_pcidev_probe, 3027 .remove = lan743x_pcidev_remove, 3028 #ifdef CONFIG_PM_SLEEP 3029 .driver.pm = &lan743x_pm_ops, 3030 #endif 3031 .shutdown = lan743x_pcidev_shutdown, 3032 }; 3033 3034 module_pci_driver(lan743x_pcidev_driver); 3035 3036 MODULE_AUTHOR(DRIVER_AUTHOR); 3037 MODULE_DESCRIPTION(DRIVER_DESC); 3038 MODULE_LICENSE("GPL"); 3039