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 u32 mii_adv; 1003 1004 netdev = adapter->netdev; 1005 phydev = phy_find_first(adapter->mdiobus); 1006 if (!phydev) 1007 goto return_error; 1008 1009 ret = phy_connect_direct(netdev, phydev, 1010 lan743x_phy_link_status_change, 1011 PHY_INTERFACE_MODE_GMII); 1012 if (ret) 1013 goto return_error; 1014 1015 /* MAC doesn't support 1000T Half */ 1016 phydev->supported &= ~SUPPORTED_1000baseT_Half; 1017 1018 /* support both flow controls */ 1019 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); 1020 phydev->advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause); 1021 mii_adv = (u32)mii_advertise_flowctrl(phy->fc_request_control); 1022 phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv); 1023 phy->fc_autoneg = phydev->autoneg; 1024 1025 phy_start(phydev); 1026 phy_start_aneg(phydev); 1027 return 0; 1028 1029 return_error: 1030 return ret; 1031 } 1032 1033 static void lan743x_rfe_open(struct lan743x_adapter *adapter) 1034 { 1035 lan743x_csr_write(adapter, RFE_RSS_CFG, 1036 RFE_RSS_CFG_UDP_IPV6_EX_ | 1037 RFE_RSS_CFG_TCP_IPV6_EX_ | 1038 RFE_RSS_CFG_IPV6_EX_ | 1039 RFE_RSS_CFG_UDP_IPV6_ | 1040 RFE_RSS_CFG_TCP_IPV6_ | 1041 RFE_RSS_CFG_IPV6_ | 1042 RFE_RSS_CFG_UDP_IPV4_ | 1043 RFE_RSS_CFG_TCP_IPV4_ | 1044 RFE_RSS_CFG_IPV4_ | 1045 RFE_RSS_CFG_VALID_HASH_BITS_ | 1046 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ | 1047 RFE_RSS_CFG_RSS_HASH_STORE_ | 1048 RFE_RSS_CFG_RSS_ENABLE_); 1049 } 1050 1051 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter) 1052 { 1053 u8 *mac_addr; 1054 u32 mac_addr_hi = 0; 1055 u32 mac_addr_lo = 0; 1056 1057 /* Add mac address to perfect Filter */ 1058 mac_addr = adapter->mac_address; 1059 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) | 1060 (((u32)(mac_addr[1])) << 8) | 1061 (((u32)(mac_addr[2])) << 16) | 1062 (((u32)(mac_addr[3])) << 24)); 1063 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) | 1064 (((u32)(mac_addr[5])) << 8)); 1065 1066 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo); 1067 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0), 1068 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_); 1069 } 1070 1071 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter) 1072 { 1073 struct net_device *netdev = adapter->netdev; 1074 u32 hash_table[DP_SEL_VHF_HASH_LEN]; 1075 u32 rfctl; 1076 u32 data; 1077 1078 rfctl = lan743x_csr_read(adapter, RFE_CTL); 1079 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ | 1080 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); 1081 rfctl |= RFE_CTL_AB_; 1082 if (netdev->flags & IFF_PROMISC) { 1083 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_; 1084 } else { 1085 if (netdev->flags & IFF_ALLMULTI) 1086 rfctl |= RFE_CTL_AM_; 1087 } 1088 1089 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32)); 1090 if (netdev_mc_count(netdev)) { 1091 struct netdev_hw_addr *ha; 1092 int i; 1093 1094 rfctl |= RFE_CTL_DA_PERFECT_; 1095 i = 1; 1096 netdev_for_each_mc_addr(ha, netdev) { 1097 /* set first 32 into Perfect Filter */ 1098 if (i < 33) { 1099 lan743x_csr_write(adapter, 1100 RFE_ADDR_FILT_HI(i), 0); 1101 data = ha->addr[3]; 1102 data = ha->addr[2] | (data << 8); 1103 data = ha->addr[1] | (data << 8); 1104 data = ha->addr[0] | (data << 8); 1105 lan743x_csr_write(adapter, 1106 RFE_ADDR_FILT_LO(i), data); 1107 data = ha->addr[5]; 1108 data = ha->addr[4] | (data << 8); 1109 data |= RFE_ADDR_FILT_HI_VALID_; 1110 lan743x_csr_write(adapter, 1111 RFE_ADDR_FILT_HI(i), data); 1112 } else { 1113 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >> 1114 23) & 0x1FF; 1115 hash_table[bitnum / 32] |= (1 << (bitnum % 32)); 1116 rfctl |= RFE_CTL_MCAST_HASH_; 1117 } 1118 i++; 1119 } 1120 } 1121 1122 lan743x_dp_write(adapter, DP_SEL_RFE_RAM, 1123 DP_SEL_VHF_VLAN_LEN, 1124 DP_SEL_VHF_HASH_LEN, hash_table); 1125 lan743x_csr_write(adapter, RFE_CTL, rfctl); 1126 } 1127 1128 static int lan743x_dmac_init(struct lan743x_adapter *adapter) 1129 { 1130 u32 data = 0; 1131 1132 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_); 1133 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_, 1134 0, 1000, 20000, 100); 1135 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) { 1136 case DMA_DESCRIPTOR_SPACING_16: 1137 data = DMAC_CFG_MAX_DSPACE_16_; 1138 break; 1139 case DMA_DESCRIPTOR_SPACING_32: 1140 data = DMAC_CFG_MAX_DSPACE_32_; 1141 break; 1142 case DMA_DESCRIPTOR_SPACING_64: 1143 data = DMAC_CFG_MAX_DSPACE_64_; 1144 break; 1145 case DMA_DESCRIPTOR_SPACING_128: 1146 data = DMAC_CFG_MAX_DSPACE_128_; 1147 break; 1148 default: 1149 return -EPERM; 1150 } 1151 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1152 data |= DMAC_CFG_COAL_EN_; 1153 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_; 1154 data |= DMAC_CFG_MAX_READ_REQ_SET_(6); 1155 lan743x_csr_write(adapter, DMAC_CFG, data); 1156 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1); 1157 data |= DMAC_COAL_CFG_TIMER_TX_START_; 1158 data |= DMAC_COAL_CFG_FLUSH_INTS_; 1159 data |= DMAC_COAL_CFG_INT_EXIT_COAL_; 1160 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_; 1161 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A); 1162 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C); 1163 lan743x_csr_write(adapter, DMAC_COAL_CFG, data); 1164 data = DMAC_OBFF_TX_THRES_SET_(0x08); 1165 data |= DMAC_OBFF_RX_THRES_SET_(0x0A); 1166 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data); 1167 return 0; 1168 } 1169 1170 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter, 1171 int tx_channel) 1172 { 1173 u32 dmac_cmd = 0; 1174 1175 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1176 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1177 DMAC_CMD_START_T_(tx_channel)), 1178 (dmac_cmd & 1179 DMAC_CMD_STOP_T_(tx_channel))); 1180 } 1181 1182 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter, 1183 int tx_channel) 1184 { 1185 int timeout = 100; 1186 int result = 0; 1187 1188 while (timeout && 1189 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) == 1190 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1191 usleep_range(1000, 20000); 1192 timeout--; 1193 } 1194 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1195 result = -ENODEV; 1196 return result; 1197 } 1198 1199 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter, 1200 int rx_channel) 1201 { 1202 u32 dmac_cmd = 0; 1203 1204 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1205 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1206 DMAC_CMD_START_R_(rx_channel)), 1207 (dmac_cmd & 1208 DMAC_CMD_STOP_R_(rx_channel))); 1209 } 1210 1211 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter, 1212 int rx_channel) 1213 { 1214 int timeout = 100; 1215 int result = 0; 1216 1217 while (timeout && 1218 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) == 1219 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1220 usleep_range(1000, 20000); 1221 timeout--; 1222 } 1223 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1224 result = -ENODEV; 1225 return result; 1226 } 1227 1228 static void lan743x_tx_release_desc(struct lan743x_tx *tx, 1229 int descriptor_index, bool cleanup) 1230 { 1231 struct lan743x_tx_buffer_info *buffer_info = NULL; 1232 struct lan743x_tx_descriptor *descriptor = NULL; 1233 u32 descriptor_type = 0; 1234 bool ignore_sync; 1235 1236 descriptor = &tx->ring_cpu_ptr[descriptor_index]; 1237 buffer_info = &tx->buffer_info[descriptor_index]; 1238 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE)) 1239 goto done; 1240 1241 descriptor_type = (descriptor->data0) & 1242 TX_DESC_DATA0_DTYPE_MASK_; 1243 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_) 1244 goto clean_up_data_descriptor; 1245 else 1246 goto clear_active; 1247 1248 clean_up_data_descriptor: 1249 if (buffer_info->dma_ptr) { 1250 if (buffer_info->flags & 1251 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) { 1252 dma_unmap_page(&tx->adapter->pdev->dev, 1253 buffer_info->dma_ptr, 1254 buffer_info->buffer_length, 1255 DMA_TO_DEVICE); 1256 } else { 1257 dma_unmap_single(&tx->adapter->pdev->dev, 1258 buffer_info->dma_ptr, 1259 buffer_info->buffer_length, 1260 DMA_TO_DEVICE); 1261 } 1262 buffer_info->dma_ptr = 0; 1263 buffer_info->buffer_length = 0; 1264 } 1265 if (!buffer_info->skb) 1266 goto clear_active; 1267 1268 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) { 1269 dev_kfree_skb(buffer_info->skb); 1270 goto clear_skb; 1271 } 1272 1273 if (cleanup) { 1274 lan743x_ptp_unrequest_tx_timestamp(tx->adapter); 1275 dev_kfree_skb(buffer_info->skb); 1276 } else { 1277 ignore_sync = (buffer_info->flags & 1278 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0; 1279 lan743x_ptp_tx_timestamp_skb(tx->adapter, 1280 buffer_info->skb, ignore_sync); 1281 } 1282 1283 clear_skb: 1284 buffer_info->skb = NULL; 1285 1286 clear_active: 1287 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE; 1288 1289 done: 1290 memset(buffer_info, 0, sizeof(*buffer_info)); 1291 memset(descriptor, 0, sizeof(*descriptor)); 1292 } 1293 1294 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index) 1295 { 1296 return ((++index) % tx->ring_size); 1297 } 1298 1299 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx) 1300 { 1301 while ((*tx->head_cpu_ptr) != (tx->last_head)) { 1302 lan743x_tx_release_desc(tx, tx->last_head, false); 1303 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1304 } 1305 } 1306 1307 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx) 1308 { 1309 u32 original_head = 0; 1310 1311 original_head = tx->last_head; 1312 do { 1313 lan743x_tx_release_desc(tx, tx->last_head, true); 1314 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1315 } while (tx->last_head != original_head); 1316 memset(tx->ring_cpu_ptr, 0, 1317 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size)); 1318 memset(tx->buffer_info, 0, 1319 sizeof(*tx->buffer_info) * (tx->ring_size)); 1320 } 1321 1322 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx, 1323 struct sk_buff *skb) 1324 { 1325 int result = 1; /* 1 for the main skb buffer */ 1326 int nr_frags = 0; 1327 1328 if (skb_is_gso(skb)) 1329 result++; /* requires an extension descriptor */ 1330 nr_frags = skb_shinfo(skb)->nr_frags; 1331 result += nr_frags; /* 1 for each fragment buffer */ 1332 return result; 1333 } 1334 1335 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx) 1336 { 1337 int last_head = tx->last_head; 1338 int last_tail = tx->last_tail; 1339 1340 if (last_tail >= last_head) 1341 return tx->ring_size - last_tail + last_head - 1; 1342 else 1343 return last_head - last_tail - 1; 1344 } 1345 1346 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx, 1347 bool enable_timestamping, 1348 bool enable_onestep_sync) 1349 { 1350 if (enable_timestamping) 1351 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED; 1352 else 1353 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED; 1354 if (enable_onestep_sync) 1355 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC; 1356 else 1357 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC; 1358 } 1359 1360 static int lan743x_tx_frame_start(struct lan743x_tx *tx, 1361 unsigned char *first_buffer, 1362 unsigned int first_buffer_length, 1363 unsigned int frame_length, 1364 bool time_stamp, 1365 bool check_sum) 1366 { 1367 /* called only from within lan743x_tx_xmit_frame. 1368 * assuming tx->ring_lock has already been acquired. 1369 */ 1370 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1371 struct lan743x_tx_buffer_info *buffer_info = NULL; 1372 struct lan743x_adapter *adapter = tx->adapter; 1373 struct device *dev = &adapter->pdev->dev; 1374 dma_addr_t dma_ptr; 1375 1376 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS; 1377 tx->frame_first = tx->last_tail; 1378 tx->frame_tail = tx->frame_first; 1379 1380 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1381 buffer_info = &tx->buffer_info[tx->frame_tail]; 1382 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length, 1383 DMA_TO_DEVICE); 1384 if (dma_mapping_error(dev, dma_ptr)) 1385 return -ENOMEM; 1386 1387 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1388 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1389 tx_descriptor->data3 = (frame_length << 16) & 1390 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1391 1392 buffer_info->skb = NULL; 1393 buffer_info->dma_ptr = dma_ptr; 1394 buffer_info->buffer_length = first_buffer_length; 1395 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1396 1397 tx->frame_data0 = (first_buffer_length & 1398 TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1399 TX_DESC_DATA0_DTYPE_DATA_ | 1400 TX_DESC_DATA0_FS_ | 1401 TX_DESC_DATA0_FCS_; 1402 if (time_stamp) 1403 tx->frame_data0 |= TX_DESC_DATA0_TSE_; 1404 1405 if (check_sum) 1406 tx->frame_data0 |= TX_DESC_DATA0_ICE_ | 1407 TX_DESC_DATA0_IPE_ | 1408 TX_DESC_DATA0_TPE_; 1409 1410 /* data0 will be programmed in one of other frame assembler functions */ 1411 return 0; 1412 } 1413 1414 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx, 1415 unsigned int frame_length) 1416 { 1417 /* called only from within lan743x_tx_xmit_frame. 1418 * assuming tx->ring_lock has already been acquired. 1419 */ 1420 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1421 struct lan743x_tx_buffer_info *buffer_info = NULL; 1422 1423 /* wrap up previous descriptor */ 1424 tx->frame_data0 |= TX_DESC_DATA0_EXT_; 1425 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1426 tx_descriptor->data0 = tx->frame_data0; 1427 1428 /* move to next descriptor */ 1429 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1430 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1431 buffer_info = &tx->buffer_info[tx->frame_tail]; 1432 1433 /* add extension descriptor */ 1434 tx_descriptor->data1 = 0; 1435 tx_descriptor->data2 = 0; 1436 tx_descriptor->data3 = 0; 1437 1438 buffer_info->skb = NULL; 1439 buffer_info->dma_ptr = 0; 1440 buffer_info->buffer_length = 0; 1441 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1442 1443 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) | 1444 TX_DESC_DATA0_DTYPE_EXT_ | 1445 TX_DESC_DATA0_EXT_LSO_; 1446 1447 /* data0 will be programmed in one of other frame assembler functions */ 1448 } 1449 1450 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx, 1451 const struct skb_frag_struct *fragment, 1452 unsigned int frame_length) 1453 { 1454 /* called only from within lan743x_tx_xmit_frame 1455 * assuming tx->ring_lock has already been acquired 1456 */ 1457 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1458 struct lan743x_tx_buffer_info *buffer_info = NULL; 1459 struct lan743x_adapter *adapter = tx->adapter; 1460 struct device *dev = &adapter->pdev->dev; 1461 unsigned int fragment_length = 0; 1462 dma_addr_t dma_ptr; 1463 1464 fragment_length = skb_frag_size(fragment); 1465 if (!fragment_length) 1466 return 0; 1467 1468 /* wrap up previous descriptor */ 1469 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1470 tx_descriptor->data0 = tx->frame_data0; 1471 1472 /* move to next descriptor */ 1473 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1474 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1475 buffer_info = &tx->buffer_info[tx->frame_tail]; 1476 dma_ptr = skb_frag_dma_map(dev, fragment, 1477 0, fragment_length, 1478 DMA_TO_DEVICE); 1479 if (dma_mapping_error(dev, dma_ptr)) { 1480 int desc_index; 1481 1482 /* cleanup all previously setup descriptors */ 1483 desc_index = tx->frame_first; 1484 while (desc_index != tx->frame_tail) { 1485 lan743x_tx_release_desc(tx, desc_index, true); 1486 desc_index = lan743x_tx_next_index(tx, desc_index); 1487 } 1488 dma_wmb(); 1489 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1490 tx->frame_first = 0; 1491 tx->frame_data0 = 0; 1492 tx->frame_tail = 0; 1493 return -ENOMEM; 1494 } 1495 1496 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1497 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1498 tx_descriptor->data3 = (frame_length << 16) & 1499 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1500 1501 buffer_info->skb = NULL; 1502 buffer_info->dma_ptr = dma_ptr; 1503 buffer_info->buffer_length = fragment_length; 1504 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1505 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT; 1506 1507 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1508 TX_DESC_DATA0_DTYPE_DATA_ | 1509 TX_DESC_DATA0_FCS_; 1510 1511 /* data0 will be programmed in one of other frame assembler functions */ 1512 return 0; 1513 } 1514 1515 static void lan743x_tx_frame_end(struct lan743x_tx *tx, 1516 struct sk_buff *skb, 1517 bool time_stamp, 1518 bool ignore_sync) 1519 { 1520 /* called only from within lan743x_tx_xmit_frame 1521 * assuming tx->ring_lock has already been acquired 1522 */ 1523 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1524 struct lan743x_tx_buffer_info *buffer_info = NULL; 1525 struct lan743x_adapter *adapter = tx->adapter; 1526 u32 tx_tail_flags = 0; 1527 1528 /* wrap up previous descriptor */ 1529 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1530 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1531 1532 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1533 buffer_info = &tx->buffer_info[tx->frame_tail]; 1534 buffer_info->skb = skb; 1535 if (time_stamp) 1536 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED; 1537 if (ignore_sync) 1538 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC; 1539 1540 tx_descriptor->data0 = tx->frame_data0; 1541 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1542 tx->last_tail = tx->frame_tail; 1543 1544 dma_wmb(); 1545 1546 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 1547 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_; 1548 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) 1549 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ | 1550 TX_TAIL_SET_TOP_INT_EN_; 1551 1552 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1553 tx_tail_flags | tx->frame_tail); 1554 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1555 } 1556 1557 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx, 1558 struct sk_buff *skb) 1559 { 1560 int required_number_of_descriptors = 0; 1561 unsigned int start_frame_length = 0; 1562 unsigned int frame_length = 0; 1563 unsigned int head_length = 0; 1564 unsigned long irq_flags = 0; 1565 bool do_timestamp = false; 1566 bool ignore_sync = false; 1567 int nr_frags = 0; 1568 bool gso = false; 1569 int j; 1570 1571 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb); 1572 1573 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1574 if (required_number_of_descriptors > 1575 lan743x_tx_get_avail_desc(tx)) { 1576 if (required_number_of_descriptors > (tx->ring_size - 1)) { 1577 dev_kfree_skb(skb); 1578 } else { 1579 /* save to overflow buffer */ 1580 tx->overflow_skb = skb; 1581 netif_stop_queue(tx->adapter->netdev); 1582 } 1583 goto unlock; 1584 } 1585 1586 /* space available, transmit skb */ 1587 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 1588 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) && 1589 (lan743x_ptp_request_tx_timestamp(tx->adapter))) { 1590 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 1591 do_timestamp = true; 1592 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC) 1593 ignore_sync = true; 1594 } 1595 head_length = skb_headlen(skb); 1596 frame_length = skb_pagelen(skb); 1597 nr_frags = skb_shinfo(skb)->nr_frags; 1598 start_frame_length = frame_length; 1599 gso = skb_is_gso(skb); 1600 if (gso) { 1601 start_frame_length = max(skb_shinfo(skb)->gso_size, 1602 (unsigned short)8); 1603 } 1604 1605 if (lan743x_tx_frame_start(tx, 1606 skb->data, head_length, 1607 start_frame_length, 1608 do_timestamp, 1609 skb->ip_summed == CHECKSUM_PARTIAL)) { 1610 dev_kfree_skb(skb); 1611 goto unlock; 1612 } 1613 1614 if (gso) 1615 lan743x_tx_frame_add_lso(tx, frame_length); 1616 1617 if (nr_frags <= 0) 1618 goto finish; 1619 1620 for (j = 0; j < nr_frags; j++) { 1621 const struct skb_frag_struct *frag; 1622 1623 frag = &(skb_shinfo(skb)->frags[j]); 1624 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) { 1625 /* upon error no need to call 1626 * lan743x_tx_frame_end 1627 * frame assembler clean up was performed inside 1628 * lan743x_tx_frame_add_fragment 1629 */ 1630 dev_kfree_skb(skb); 1631 goto unlock; 1632 } 1633 } 1634 1635 finish: 1636 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync); 1637 1638 unlock: 1639 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1640 return NETDEV_TX_OK; 1641 } 1642 1643 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight) 1644 { 1645 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi); 1646 struct lan743x_adapter *adapter = tx->adapter; 1647 bool start_transmitter = false; 1648 unsigned long irq_flags = 0; 1649 u32 ioc_bit = 0; 1650 u32 int_sts = 0; 1651 1652 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 1653 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 1654 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) 1655 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit); 1656 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1657 1658 /* clean up tx ring */ 1659 lan743x_tx_release_completed_descriptors(tx); 1660 if (netif_queue_stopped(adapter->netdev)) { 1661 if (tx->overflow_skb) { 1662 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <= 1663 lan743x_tx_get_avail_desc(tx)) 1664 start_transmitter = true; 1665 } else { 1666 netif_wake_queue(adapter->netdev); 1667 } 1668 } 1669 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1670 1671 if (start_transmitter) { 1672 /* space is now available, transmit overflow skb */ 1673 lan743x_tx_xmit_frame(tx, tx->overflow_skb); 1674 tx->overflow_skb = NULL; 1675 netif_wake_queue(adapter->netdev); 1676 } 1677 1678 if (!napi_complete_done(napi, weight)) 1679 goto done; 1680 1681 /* enable isr */ 1682 lan743x_csr_write(adapter, INT_EN_SET, 1683 INT_BIT_DMA_TX_(tx->channel_number)); 1684 lan743x_csr_read(adapter, INT_STS); 1685 1686 done: 1687 return weight; 1688 } 1689 1690 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx) 1691 { 1692 if (tx->head_cpu_ptr) { 1693 pci_free_consistent(tx->adapter->pdev, 1694 sizeof(*tx->head_cpu_ptr), 1695 (void *)(tx->head_cpu_ptr), 1696 tx->head_dma_ptr); 1697 tx->head_cpu_ptr = NULL; 1698 tx->head_dma_ptr = 0; 1699 } 1700 kfree(tx->buffer_info); 1701 tx->buffer_info = NULL; 1702 1703 if (tx->ring_cpu_ptr) { 1704 pci_free_consistent(tx->adapter->pdev, 1705 tx->ring_allocation_size, 1706 tx->ring_cpu_ptr, 1707 tx->ring_dma_ptr); 1708 tx->ring_allocation_size = 0; 1709 tx->ring_cpu_ptr = NULL; 1710 tx->ring_dma_ptr = 0; 1711 } 1712 tx->ring_size = 0; 1713 } 1714 1715 static int lan743x_tx_ring_init(struct lan743x_tx *tx) 1716 { 1717 size_t ring_allocation_size = 0; 1718 void *cpu_ptr = NULL; 1719 dma_addr_t dma_ptr; 1720 int ret = -ENOMEM; 1721 1722 tx->ring_size = LAN743X_TX_RING_SIZE; 1723 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) { 1724 ret = -EINVAL; 1725 goto cleanup; 1726 } 1727 ring_allocation_size = ALIGN(tx->ring_size * 1728 sizeof(struct lan743x_tx_descriptor), 1729 PAGE_SIZE); 1730 dma_ptr = 0; 1731 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1732 ring_allocation_size, &dma_ptr); 1733 if (!cpu_ptr) { 1734 ret = -ENOMEM; 1735 goto cleanup; 1736 } 1737 1738 tx->ring_allocation_size = ring_allocation_size; 1739 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr; 1740 tx->ring_dma_ptr = dma_ptr; 1741 1742 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL); 1743 if (!cpu_ptr) { 1744 ret = -ENOMEM; 1745 goto cleanup; 1746 } 1747 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr; 1748 dma_ptr = 0; 1749 cpu_ptr = pci_zalloc_consistent(tx->adapter->pdev, 1750 sizeof(*tx->head_cpu_ptr), &dma_ptr); 1751 if (!cpu_ptr) { 1752 ret = -ENOMEM; 1753 goto cleanup; 1754 } 1755 1756 tx->head_cpu_ptr = cpu_ptr; 1757 tx->head_dma_ptr = dma_ptr; 1758 if (tx->head_dma_ptr & 0x3) { 1759 ret = -ENOMEM; 1760 goto cleanup; 1761 } 1762 1763 return 0; 1764 1765 cleanup: 1766 lan743x_tx_ring_cleanup(tx); 1767 return ret; 1768 } 1769 1770 static void lan743x_tx_close(struct lan743x_tx *tx) 1771 { 1772 struct lan743x_adapter *adapter = tx->adapter; 1773 1774 lan743x_csr_write(adapter, 1775 DMAC_CMD, 1776 DMAC_CMD_STOP_T_(tx->channel_number)); 1777 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number); 1778 1779 lan743x_csr_write(adapter, 1780 DMAC_INT_EN_CLR, 1781 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1782 lan743x_csr_write(adapter, INT_EN_CLR, 1783 INT_BIT_DMA_TX_(tx->channel_number)); 1784 napi_disable(&tx->napi); 1785 netif_napi_del(&tx->napi); 1786 1787 lan743x_csr_write(adapter, FCT_TX_CTL, 1788 FCT_TX_CTL_DIS_(tx->channel_number)); 1789 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1790 FCT_TX_CTL_EN_(tx->channel_number), 1791 0, 1000, 20000, 100); 1792 1793 lan743x_tx_release_all_descriptors(tx); 1794 1795 if (tx->overflow_skb) { 1796 dev_kfree_skb(tx->overflow_skb); 1797 tx->overflow_skb = NULL; 1798 } 1799 1800 lan743x_tx_ring_cleanup(tx); 1801 } 1802 1803 static int lan743x_tx_open(struct lan743x_tx *tx) 1804 { 1805 struct lan743x_adapter *adapter = NULL; 1806 u32 data = 0; 1807 int ret; 1808 1809 adapter = tx->adapter; 1810 ret = lan743x_tx_ring_init(tx); 1811 if (ret) 1812 return ret; 1813 1814 /* initialize fifo */ 1815 lan743x_csr_write(adapter, FCT_TX_CTL, 1816 FCT_TX_CTL_RESET_(tx->channel_number)); 1817 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1818 FCT_TX_CTL_RESET_(tx->channel_number), 1819 0, 1000, 20000, 100); 1820 1821 /* enable fifo */ 1822 lan743x_csr_write(adapter, FCT_TX_CTL, 1823 FCT_TX_CTL_EN_(tx->channel_number)); 1824 1825 /* reset tx channel */ 1826 lan743x_csr_write(adapter, DMAC_CMD, 1827 DMAC_CMD_TX_SWR_(tx->channel_number)); 1828 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 1829 DMAC_CMD_TX_SWR_(tx->channel_number), 1830 0, 1000, 20000, 100); 1831 1832 /* Write TX_BASE_ADDR */ 1833 lan743x_csr_write(adapter, 1834 TX_BASE_ADDRH(tx->channel_number), 1835 DMA_ADDR_HIGH32(tx->ring_dma_ptr)); 1836 lan743x_csr_write(adapter, 1837 TX_BASE_ADDRL(tx->channel_number), 1838 DMA_ADDR_LOW32(tx->ring_dma_ptr)); 1839 1840 /* Write TX_CFG_B */ 1841 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number)); 1842 data &= ~TX_CFG_B_TX_RING_LEN_MASK_; 1843 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_); 1844 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1845 data |= TX_CFG_B_TDMABL_512_; 1846 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data); 1847 1848 /* Write TX_CFG_A */ 1849 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_; 1850 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 1851 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_; 1852 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10); 1853 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04); 1854 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07); 1855 } 1856 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data); 1857 1858 /* Write TX_HEAD_WRITEBACK_ADDR */ 1859 lan743x_csr_write(adapter, 1860 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number), 1861 DMA_ADDR_HIGH32(tx->head_dma_ptr)); 1862 lan743x_csr_write(adapter, 1863 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number), 1864 DMA_ADDR_LOW32(tx->head_dma_ptr)); 1865 1866 /* set last head */ 1867 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number)); 1868 1869 /* write TX_TAIL */ 1870 tx->last_tail = 0; 1871 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1872 (u32)(tx->last_tail)); 1873 tx->vector_flags = lan743x_intr_get_vector_flags(adapter, 1874 INT_BIT_DMA_TX_ 1875 (tx->channel_number)); 1876 netif_napi_add(adapter->netdev, 1877 &tx->napi, lan743x_tx_napi_poll, 1878 tx->ring_size - 1); 1879 napi_enable(&tx->napi); 1880 1881 data = 0; 1882 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 1883 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_; 1884 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 1885 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_; 1886 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 1887 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_; 1888 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 1889 data |= TX_CFG_C_TX_INT_EN_R2C_; 1890 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data); 1891 1892 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)) 1893 lan743x_csr_write(adapter, INT_EN_SET, 1894 INT_BIT_DMA_TX_(tx->channel_number)); 1895 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 1896 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1897 1898 /* start dmac channel */ 1899 lan743x_csr_write(adapter, DMAC_CMD, 1900 DMAC_CMD_START_T_(tx->channel_number)); 1901 return 0; 1902 } 1903 1904 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index) 1905 { 1906 return ((++index) % rx->ring_size); 1907 } 1908 1909 static int lan743x_rx_allocate_ring_element(struct lan743x_rx *rx, int index) 1910 { 1911 struct lan743x_rx_buffer_info *buffer_info; 1912 struct lan743x_rx_descriptor *descriptor; 1913 int length = 0; 1914 1915 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1916 descriptor = &rx->ring_cpu_ptr[index]; 1917 buffer_info = &rx->buffer_info[index]; 1918 buffer_info->skb = __netdev_alloc_skb(rx->adapter->netdev, 1919 length, 1920 GFP_ATOMIC | GFP_DMA); 1921 if (!(buffer_info->skb)) 1922 return -ENOMEM; 1923 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev, 1924 buffer_info->skb->data, 1925 length, 1926 DMA_FROM_DEVICE); 1927 if (dma_mapping_error(&rx->adapter->pdev->dev, 1928 buffer_info->dma_ptr)) { 1929 buffer_info->dma_ptr = 0; 1930 return -ENOMEM; 1931 } 1932 1933 buffer_info->buffer_length = length; 1934 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1935 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1936 descriptor->data3 = 0; 1937 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1938 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1939 skb_reserve(buffer_info->skb, RX_HEAD_PADDING); 1940 1941 return 0; 1942 } 1943 1944 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index) 1945 { 1946 struct lan743x_rx_buffer_info *buffer_info; 1947 struct lan743x_rx_descriptor *descriptor; 1948 1949 descriptor = &rx->ring_cpu_ptr[index]; 1950 buffer_info = &rx->buffer_info[index]; 1951 1952 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1953 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1954 descriptor->data3 = 0; 1955 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1956 ((buffer_info->buffer_length) & 1957 RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1958 } 1959 1960 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index) 1961 { 1962 struct lan743x_rx_buffer_info *buffer_info; 1963 struct lan743x_rx_descriptor *descriptor; 1964 1965 descriptor = &rx->ring_cpu_ptr[index]; 1966 buffer_info = &rx->buffer_info[index]; 1967 1968 memset(descriptor, 0, sizeof(*descriptor)); 1969 1970 if (buffer_info->dma_ptr) { 1971 dma_unmap_single(&rx->adapter->pdev->dev, 1972 buffer_info->dma_ptr, 1973 buffer_info->buffer_length, 1974 DMA_FROM_DEVICE); 1975 buffer_info->dma_ptr = 0; 1976 } 1977 1978 if (buffer_info->skb) { 1979 dev_kfree_skb(buffer_info->skb); 1980 buffer_info->skb = NULL; 1981 } 1982 1983 memset(buffer_info, 0, sizeof(*buffer_info)); 1984 } 1985 1986 static int lan743x_rx_process_packet(struct lan743x_rx *rx) 1987 { 1988 struct skb_shared_hwtstamps *hwtstamps = NULL; 1989 int result = RX_PROCESS_RESULT_NOTHING_TO_DO; 1990 struct lan743x_rx_buffer_info *buffer_info; 1991 struct lan743x_rx_descriptor *descriptor; 1992 int current_head_index = -1; 1993 int extension_index = -1; 1994 int first_index = -1; 1995 int last_index = -1; 1996 1997 current_head_index = *rx->head_cpu_ptr; 1998 if (current_head_index < 0 || current_head_index >= rx->ring_size) 1999 goto done; 2000 2001 if (rx->last_head < 0 || rx->last_head >= rx->ring_size) 2002 goto done; 2003 2004 if (rx->last_head != current_head_index) { 2005 descriptor = &rx->ring_cpu_ptr[rx->last_head]; 2006 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2007 goto done; 2008 2009 if (!(descriptor->data0 & RX_DESC_DATA0_FS_)) 2010 goto done; 2011 2012 first_index = rx->last_head; 2013 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2014 last_index = rx->last_head; 2015 } else { 2016 int index; 2017 2018 index = lan743x_rx_next_index(rx, first_index); 2019 while (index != current_head_index) { 2020 descriptor = &rx->ring_cpu_ptr[index]; 2021 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2022 goto done; 2023 2024 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2025 last_index = index; 2026 break; 2027 } 2028 index = lan743x_rx_next_index(rx, index); 2029 } 2030 } 2031 if (last_index >= 0) { 2032 descriptor = &rx->ring_cpu_ptr[last_index]; 2033 if (descriptor->data0 & RX_DESC_DATA0_EXT_) { 2034 /* extension is expected to follow */ 2035 int index = lan743x_rx_next_index(rx, 2036 last_index); 2037 if (index != current_head_index) { 2038 descriptor = &rx->ring_cpu_ptr[index]; 2039 if (descriptor->data0 & 2040 RX_DESC_DATA0_OWN_) { 2041 goto done; 2042 } 2043 if (descriptor->data0 & 2044 RX_DESC_DATA0_EXT_) { 2045 extension_index = index; 2046 } else { 2047 goto done; 2048 } 2049 } else { 2050 /* extension is not yet available */ 2051 /* prevent processing of this packet */ 2052 first_index = -1; 2053 last_index = -1; 2054 } 2055 } 2056 } 2057 } 2058 if (first_index >= 0 && last_index >= 0) { 2059 int real_last_index = last_index; 2060 struct sk_buff *skb = NULL; 2061 u32 ts_sec = 0; 2062 u32 ts_nsec = 0; 2063 2064 /* packet is available */ 2065 if (first_index == last_index) { 2066 /* single buffer packet */ 2067 int packet_length; 2068 2069 buffer_info = &rx->buffer_info[first_index]; 2070 skb = buffer_info->skb; 2071 descriptor = &rx->ring_cpu_ptr[first_index]; 2072 2073 /* unmap from dma */ 2074 if (buffer_info->dma_ptr) { 2075 dma_unmap_single(&rx->adapter->pdev->dev, 2076 buffer_info->dma_ptr, 2077 buffer_info->buffer_length, 2078 DMA_FROM_DEVICE); 2079 buffer_info->dma_ptr = 0; 2080 buffer_info->buffer_length = 0; 2081 } 2082 buffer_info->skb = NULL; 2083 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_ 2084 (descriptor->data0); 2085 skb_put(skb, packet_length - 4); 2086 skb->protocol = eth_type_trans(skb, 2087 rx->adapter->netdev); 2088 lan743x_rx_allocate_ring_element(rx, first_index); 2089 } else { 2090 int index = first_index; 2091 2092 /* multi buffer packet not supported */ 2093 /* this should not happen since 2094 * buffers are allocated to be at least jumbo size 2095 */ 2096 2097 /* clean up buffers */ 2098 if (first_index <= last_index) { 2099 while ((index >= first_index) && 2100 (index <= last_index)) { 2101 lan743x_rx_release_ring_element(rx, 2102 index); 2103 lan743x_rx_allocate_ring_element(rx, 2104 index); 2105 index = lan743x_rx_next_index(rx, 2106 index); 2107 } 2108 } else { 2109 while ((index >= first_index) || 2110 (index <= last_index)) { 2111 lan743x_rx_release_ring_element(rx, 2112 index); 2113 lan743x_rx_allocate_ring_element(rx, 2114 index); 2115 index = lan743x_rx_next_index(rx, 2116 index); 2117 } 2118 } 2119 } 2120 2121 if (extension_index >= 0) { 2122 descriptor = &rx->ring_cpu_ptr[extension_index]; 2123 buffer_info = &rx->buffer_info[extension_index]; 2124 2125 ts_sec = descriptor->data1; 2126 ts_nsec = (descriptor->data2 & 2127 RX_DESC_DATA2_TS_NS_MASK_); 2128 lan743x_rx_reuse_ring_element(rx, extension_index); 2129 real_last_index = extension_index; 2130 } 2131 2132 if (!skb) { 2133 result = RX_PROCESS_RESULT_PACKET_DROPPED; 2134 goto move_forward; 2135 } 2136 2137 if (extension_index < 0) 2138 goto pass_packet_to_os; 2139 hwtstamps = skb_hwtstamps(skb); 2140 if (hwtstamps) 2141 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec); 2142 2143 pass_packet_to_os: 2144 /* pass packet to OS */ 2145 napi_gro_receive(&rx->napi, skb); 2146 result = RX_PROCESS_RESULT_PACKET_RECEIVED; 2147 2148 move_forward: 2149 /* push tail and head forward */ 2150 rx->last_tail = real_last_index; 2151 rx->last_head = lan743x_rx_next_index(rx, real_last_index); 2152 } 2153 done: 2154 return result; 2155 } 2156 2157 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight) 2158 { 2159 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi); 2160 struct lan743x_adapter *adapter = rx->adapter; 2161 u32 rx_tail_flags = 0; 2162 int count; 2163 2164 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) { 2165 /* clear int status bit before reading packet */ 2166 lan743x_csr_write(adapter, DMAC_INT_STS, 2167 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2168 } 2169 count = 0; 2170 while (count < weight) { 2171 int rx_process_result = -1; 2172 2173 rx_process_result = lan743x_rx_process_packet(rx); 2174 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) { 2175 count++; 2176 } else if (rx_process_result == 2177 RX_PROCESS_RESULT_NOTHING_TO_DO) { 2178 break; 2179 } else if (rx_process_result == 2180 RX_PROCESS_RESULT_PACKET_DROPPED) { 2181 continue; 2182 } 2183 } 2184 rx->frame_count += count; 2185 if (count == weight) 2186 goto done; 2187 2188 if (!napi_complete_done(napi, count)) 2189 goto done; 2190 2191 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 2192 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_; 2193 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) { 2194 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_; 2195 } else { 2196 lan743x_csr_write(adapter, INT_EN_SET, 2197 INT_BIT_DMA_RX_(rx->channel_number)); 2198 } 2199 2200 /* update RX_TAIL */ 2201 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2202 rx_tail_flags | rx->last_tail); 2203 done: 2204 return count; 2205 } 2206 2207 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx) 2208 { 2209 if (rx->buffer_info && rx->ring_cpu_ptr) { 2210 int index; 2211 2212 for (index = 0; index < rx->ring_size; index++) 2213 lan743x_rx_release_ring_element(rx, index); 2214 } 2215 2216 if (rx->head_cpu_ptr) { 2217 pci_free_consistent(rx->adapter->pdev, 2218 sizeof(*rx->head_cpu_ptr), 2219 rx->head_cpu_ptr, 2220 rx->head_dma_ptr); 2221 rx->head_cpu_ptr = NULL; 2222 rx->head_dma_ptr = 0; 2223 } 2224 2225 kfree(rx->buffer_info); 2226 rx->buffer_info = NULL; 2227 2228 if (rx->ring_cpu_ptr) { 2229 pci_free_consistent(rx->adapter->pdev, 2230 rx->ring_allocation_size, 2231 rx->ring_cpu_ptr, 2232 rx->ring_dma_ptr); 2233 rx->ring_allocation_size = 0; 2234 rx->ring_cpu_ptr = NULL; 2235 rx->ring_dma_ptr = 0; 2236 } 2237 2238 rx->ring_size = 0; 2239 rx->last_head = 0; 2240 } 2241 2242 static int lan743x_rx_ring_init(struct lan743x_rx *rx) 2243 { 2244 size_t ring_allocation_size = 0; 2245 dma_addr_t dma_ptr = 0; 2246 void *cpu_ptr = NULL; 2247 int ret = -ENOMEM; 2248 int index = 0; 2249 2250 rx->ring_size = LAN743X_RX_RING_SIZE; 2251 if (rx->ring_size <= 1) { 2252 ret = -EINVAL; 2253 goto cleanup; 2254 } 2255 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) { 2256 ret = -EINVAL; 2257 goto cleanup; 2258 } 2259 ring_allocation_size = ALIGN(rx->ring_size * 2260 sizeof(struct lan743x_rx_descriptor), 2261 PAGE_SIZE); 2262 dma_ptr = 0; 2263 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2264 ring_allocation_size, &dma_ptr); 2265 if (!cpu_ptr) { 2266 ret = -ENOMEM; 2267 goto cleanup; 2268 } 2269 rx->ring_allocation_size = ring_allocation_size; 2270 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr; 2271 rx->ring_dma_ptr = dma_ptr; 2272 2273 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info), 2274 GFP_KERNEL); 2275 if (!cpu_ptr) { 2276 ret = -ENOMEM; 2277 goto cleanup; 2278 } 2279 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr; 2280 dma_ptr = 0; 2281 cpu_ptr = pci_zalloc_consistent(rx->adapter->pdev, 2282 sizeof(*rx->head_cpu_ptr), &dma_ptr); 2283 if (!cpu_ptr) { 2284 ret = -ENOMEM; 2285 goto cleanup; 2286 } 2287 2288 rx->head_cpu_ptr = cpu_ptr; 2289 rx->head_dma_ptr = dma_ptr; 2290 if (rx->head_dma_ptr & 0x3) { 2291 ret = -ENOMEM; 2292 goto cleanup; 2293 } 2294 2295 rx->last_head = 0; 2296 for (index = 0; index < rx->ring_size; index++) { 2297 ret = lan743x_rx_allocate_ring_element(rx, index); 2298 if (ret) 2299 goto cleanup; 2300 } 2301 return 0; 2302 2303 cleanup: 2304 lan743x_rx_ring_cleanup(rx); 2305 return ret; 2306 } 2307 2308 static void lan743x_rx_close(struct lan743x_rx *rx) 2309 { 2310 struct lan743x_adapter *adapter = rx->adapter; 2311 2312 lan743x_csr_write(adapter, FCT_RX_CTL, 2313 FCT_RX_CTL_DIS_(rx->channel_number)); 2314 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2315 FCT_RX_CTL_EN_(rx->channel_number), 2316 0, 1000, 20000, 100); 2317 2318 lan743x_csr_write(adapter, DMAC_CMD, 2319 DMAC_CMD_STOP_R_(rx->channel_number)); 2320 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number); 2321 2322 lan743x_csr_write(adapter, DMAC_INT_EN_CLR, 2323 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2324 lan743x_csr_write(adapter, INT_EN_CLR, 2325 INT_BIT_DMA_RX_(rx->channel_number)); 2326 napi_disable(&rx->napi); 2327 2328 netif_napi_del(&rx->napi); 2329 2330 lan743x_rx_ring_cleanup(rx); 2331 } 2332 2333 static int lan743x_rx_open(struct lan743x_rx *rx) 2334 { 2335 struct lan743x_adapter *adapter = rx->adapter; 2336 u32 data = 0; 2337 int ret; 2338 2339 rx->frame_count = 0; 2340 ret = lan743x_rx_ring_init(rx); 2341 if (ret) 2342 goto return_error; 2343 2344 netif_napi_add(adapter->netdev, 2345 &rx->napi, lan743x_rx_napi_poll, 2346 rx->ring_size - 1); 2347 2348 lan743x_csr_write(adapter, DMAC_CMD, 2349 DMAC_CMD_RX_SWR_(rx->channel_number)); 2350 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 2351 DMAC_CMD_RX_SWR_(rx->channel_number), 2352 0, 1000, 20000, 100); 2353 2354 /* set ring base address */ 2355 lan743x_csr_write(adapter, 2356 RX_BASE_ADDRH(rx->channel_number), 2357 DMA_ADDR_HIGH32(rx->ring_dma_ptr)); 2358 lan743x_csr_write(adapter, 2359 RX_BASE_ADDRL(rx->channel_number), 2360 DMA_ADDR_LOW32(rx->ring_dma_ptr)); 2361 2362 /* set rx write back address */ 2363 lan743x_csr_write(adapter, 2364 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number), 2365 DMA_ADDR_HIGH32(rx->head_dma_ptr)); 2366 lan743x_csr_write(adapter, 2367 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number), 2368 DMA_ADDR_LOW32(rx->head_dma_ptr)); 2369 data = RX_CFG_A_RX_HP_WB_EN_; 2370 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 2371 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ | 2372 RX_CFG_A_RX_WB_THRES_SET_(0x7) | 2373 RX_CFG_A_RX_PF_THRES_SET_(16) | 2374 RX_CFG_A_RX_PF_PRI_THRES_SET_(4)); 2375 } 2376 2377 /* set RX_CFG_A */ 2378 lan743x_csr_write(adapter, 2379 RX_CFG_A(rx->channel_number), data); 2380 2381 /* set RX_CFG_B */ 2382 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number)); 2383 data &= ~RX_CFG_B_RX_PAD_MASK_; 2384 if (!RX_HEAD_PADDING) 2385 data |= RX_CFG_B_RX_PAD_0_; 2386 else 2387 data |= RX_CFG_B_RX_PAD_2_; 2388 data &= ~RX_CFG_B_RX_RING_LEN_MASK_; 2389 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_); 2390 data |= RX_CFG_B_TS_ALL_RX_; 2391 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 2392 data |= RX_CFG_B_RDMABL_512_; 2393 2394 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data); 2395 rx->vector_flags = lan743x_intr_get_vector_flags(adapter, 2396 INT_BIT_DMA_RX_ 2397 (rx->channel_number)); 2398 2399 /* set RX_CFG_C */ 2400 data = 0; 2401 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 2402 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_; 2403 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 2404 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_; 2405 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 2406 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_; 2407 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 2408 data |= RX_CFG_C_RX_INT_EN_R2C_; 2409 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data); 2410 2411 rx->last_tail = ((u32)(rx->ring_size - 1)); 2412 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2413 rx->last_tail); 2414 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number)); 2415 if (rx->last_head) { 2416 ret = -EIO; 2417 goto napi_delete; 2418 } 2419 2420 napi_enable(&rx->napi); 2421 2422 lan743x_csr_write(adapter, INT_EN_SET, 2423 INT_BIT_DMA_RX_(rx->channel_number)); 2424 lan743x_csr_write(adapter, DMAC_INT_STS, 2425 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2426 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 2427 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2428 lan743x_csr_write(adapter, DMAC_CMD, 2429 DMAC_CMD_START_R_(rx->channel_number)); 2430 2431 /* initialize fifo */ 2432 lan743x_csr_write(adapter, FCT_RX_CTL, 2433 FCT_RX_CTL_RESET_(rx->channel_number)); 2434 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2435 FCT_RX_CTL_RESET_(rx->channel_number), 2436 0, 1000, 20000, 100); 2437 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number), 2438 FCT_FLOW_CTL_REQ_EN_ | 2439 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) | 2440 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA)); 2441 2442 /* enable fifo */ 2443 lan743x_csr_write(adapter, FCT_RX_CTL, 2444 FCT_RX_CTL_EN_(rx->channel_number)); 2445 return 0; 2446 2447 napi_delete: 2448 netif_napi_del(&rx->napi); 2449 lan743x_rx_ring_cleanup(rx); 2450 2451 return_error: 2452 return ret; 2453 } 2454 2455 static int lan743x_netdev_close(struct net_device *netdev) 2456 { 2457 struct lan743x_adapter *adapter = netdev_priv(netdev); 2458 int index; 2459 2460 lan743x_tx_close(&adapter->tx[0]); 2461 2462 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) 2463 lan743x_rx_close(&adapter->rx[index]); 2464 2465 lan743x_ptp_close(adapter); 2466 2467 lan743x_phy_close(adapter); 2468 2469 lan743x_mac_close(adapter); 2470 2471 lan743x_intr_close(adapter); 2472 2473 return 0; 2474 } 2475 2476 static int lan743x_netdev_open(struct net_device *netdev) 2477 { 2478 struct lan743x_adapter *adapter = netdev_priv(netdev); 2479 int index; 2480 int ret; 2481 2482 ret = lan743x_intr_open(adapter); 2483 if (ret) 2484 goto return_error; 2485 2486 ret = lan743x_mac_open(adapter); 2487 if (ret) 2488 goto close_intr; 2489 2490 ret = lan743x_phy_open(adapter); 2491 if (ret) 2492 goto close_mac; 2493 2494 ret = lan743x_ptp_open(adapter); 2495 if (ret) 2496 goto close_phy; 2497 2498 lan743x_rfe_open(adapter); 2499 2500 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2501 ret = lan743x_rx_open(&adapter->rx[index]); 2502 if (ret) 2503 goto close_rx; 2504 } 2505 2506 ret = lan743x_tx_open(&adapter->tx[0]); 2507 if (ret) 2508 goto close_rx; 2509 2510 return 0; 2511 2512 close_rx: 2513 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2514 if (adapter->rx[index].ring_cpu_ptr) 2515 lan743x_rx_close(&adapter->rx[index]); 2516 } 2517 lan743x_ptp_close(adapter); 2518 2519 close_phy: 2520 lan743x_phy_close(adapter); 2521 2522 close_mac: 2523 lan743x_mac_close(adapter); 2524 2525 close_intr: 2526 lan743x_intr_close(adapter); 2527 2528 return_error: 2529 netif_warn(adapter, ifup, adapter->netdev, 2530 "Error opening LAN743x\n"); 2531 return ret; 2532 } 2533 2534 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb, 2535 struct net_device *netdev) 2536 { 2537 struct lan743x_adapter *adapter = netdev_priv(netdev); 2538 2539 return lan743x_tx_xmit_frame(&adapter->tx[0], skb); 2540 } 2541 2542 static int lan743x_netdev_ioctl(struct net_device *netdev, 2543 struct ifreq *ifr, int cmd) 2544 { 2545 if (!netif_running(netdev)) 2546 return -EINVAL; 2547 if (cmd == SIOCSHWTSTAMP) 2548 return lan743x_ptp_ioctl(netdev, ifr, cmd); 2549 return phy_mii_ioctl(netdev->phydev, ifr, cmd); 2550 } 2551 2552 static void lan743x_netdev_set_multicast(struct net_device *netdev) 2553 { 2554 struct lan743x_adapter *adapter = netdev_priv(netdev); 2555 2556 lan743x_rfe_set_multicast(adapter); 2557 } 2558 2559 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu) 2560 { 2561 struct lan743x_adapter *adapter = netdev_priv(netdev); 2562 int ret = 0; 2563 2564 ret = lan743x_mac_set_mtu(adapter, new_mtu); 2565 if (!ret) 2566 netdev->mtu = new_mtu; 2567 return ret; 2568 } 2569 2570 static void lan743x_netdev_get_stats64(struct net_device *netdev, 2571 struct rtnl_link_stats64 *stats) 2572 { 2573 struct lan743x_adapter *adapter = netdev_priv(netdev); 2574 2575 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES); 2576 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES); 2577 stats->rx_bytes = lan743x_csr_read(adapter, 2578 STAT_RX_UNICAST_BYTE_COUNT) + 2579 lan743x_csr_read(adapter, 2580 STAT_RX_BROADCAST_BYTE_COUNT) + 2581 lan743x_csr_read(adapter, 2582 STAT_RX_MULTICAST_BYTE_COUNT); 2583 stats->tx_bytes = lan743x_csr_read(adapter, 2584 STAT_TX_UNICAST_BYTE_COUNT) + 2585 lan743x_csr_read(adapter, 2586 STAT_TX_BROADCAST_BYTE_COUNT) + 2587 lan743x_csr_read(adapter, 2588 STAT_TX_MULTICAST_BYTE_COUNT); 2589 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) + 2590 lan743x_csr_read(adapter, 2591 STAT_RX_ALIGNMENT_ERRORS) + 2592 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) + 2593 lan743x_csr_read(adapter, 2594 STAT_RX_UNDERSIZE_FRAME_ERRORS) + 2595 lan743x_csr_read(adapter, 2596 STAT_RX_OVERSIZE_FRAME_ERRORS); 2597 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) + 2598 lan743x_csr_read(adapter, 2599 STAT_TX_EXCESS_DEFERRAL_ERRORS) + 2600 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS); 2601 stats->rx_dropped = lan743x_csr_read(adapter, 2602 STAT_RX_DROPPED_FRAMES); 2603 stats->tx_dropped = lan743x_csr_read(adapter, 2604 STAT_TX_EXCESSIVE_COLLISION); 2605 stats->multicast = lan743x_csr_read(adapter, 2606 STAT_RX_MULTICAST_FRAMES) + 2607 lan743x_csr_read(adapter, 2608 STAT_TX_MULTICAST_FRAMES); 2609 stats->collisions = lan743x_csr_read(adapter, 2610 STAT_TX_SINGLE_COLLISIONS) + 2611 lan743x_csr_read(adapter, 2612 STAT_TX_MULTIPLE_COLLISIONS) + 2613 lan743x_csr_read(adapter, 2614 STAT_TX_LATE_COLLISIONS); 2615 } 2616 2617 static int lan743x_netdev_set_mac_address(struct net_device *netdev, 2618 void *addr) 2619 { 2620 struct lan743x_adapter *adapter = netdev_priv(netdev); 2621 struct sockaddr *sock_addr = addr; 2622 int ret; 2623 2624 ret = eth_prepare_mac_addr_change(netdev, sock_addr); 2625 if (ret) 2626 return ret; 2627 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data); 2628 lan743x_mac_set_address(adapter, sock_addr->sa_data); 2629 lan743x_rfe_update_mac_address(adapter); 2630 return 0; 2631 } 2632 2633 static const struct net_device_ops lan743x_netdev_ops = { 2634 .ndo_open = lan743x_netdev_open, 2635 .ndo_stop = lan743x_netdev_close, 2636 .ndo_start_xmit = lan743x_netdev_xmit_frame, 2637 .ndo_do_ioctl = lan743x_netdev_ioctl, 2638 .ndo_set_rx_mode = lan743x_netdev_set_multicast, 2639 .ndo_change_mtu = lan743x_netdev_change_mtu, 2640 .ndo_get_stats64 = lan743x_netdev_get_stats64, 2641 .ndo_set_mac_address = lan743x_netdev_set_mac_address, 2642 }; 2643 2644 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter) 2645 { 2646 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2647 } 2648 2649 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter) 2650 { 2651 mdiobus_unregister(adapter->mdiobus); 2652 } 2653 2654 static void lan743x_full_cleanup(struct lan743x_adapter *adapter) 2655 { 2656 unregister_netdev(adapter->netdev); 2657 2658 lan743x_mdiobus_cleanup(adapter); 2659 lan743x_hardware_cleanup(adapter); 2660 lan743x_pci_cleanup(adapter); 2661 } 2662 2663 static int lan743x_hardware_init(struct lan743x_adapter *adapter, 2664 struct pci_dev *pdev) 2665 { 2666 struct lan743x_tx *tx; 2667 int index; 2668 int ret; 2669 2670 adapter->intr.irq = adapter->pdev->irq; 2671 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2672 mutex_init(&adapter->dp_lock); 2673 2674 ret = lan743x_gpio_init(adapter); 2675 if (ret) 2676 return ret; 2677 2678 ret = lan743x_mac_init(adapter); 2679 if (ret) 2680 return ret; 2681 2682 ret = lan743x_phy_init(adapter); 2683 if (ret) 2684 return ret; 2685 2686 ret = lan743x_ptp_init(adapter); 2687 if (ret) 2688 return ret; 2689 2690 lan743x_rfe_update_mac_address(adapter); 2691 2692 ret = lan743x_dmac_init(adapter); 2693 if (ret) 2694 return ret; 2695 2696 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2697 adapter->rx[index].adapter = adapter; 2698 adapter->rx[index].channel_number = index; 2699 } 2700 2701 tx = &adapter->tx[0]; 2702 tx->adapter = adapter; 2703 tx->channel_number = 0; 2704 spin_lock_init(&tx->ring_lock); 2705 return 0; 2706 } 2707 2708 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter) 2709 { 2710 int ret; 2711 2712 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev); 2713 if (!(adapter->mdiobus)) { 2714 ret = -ENOMEM; 2715 goto return_error; 2716 } 2717 2718 adapter->mdiobus->priv = (void *)adapter; 2719 adapter->mdiobus->read = lan743x_mdiobus_read; 2720 adapter->mdiobus->write = lan743x_mdiobus_write; 2721 adapter->mdiobus->name = "lan743x-mdiobus"; 2722 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE, 2723 "pci-%s", pci_name(adapter->pdev)); 2724 2725 /* set to internal PHY id */ 2726 adapter->mdiobus->phy_mask = ~(u32)BIT(1); 2727 2728 /* register mdiobus */ 2729 ret = mdiobus_register(adapter->mdiobus); 2730 if (ret < 0) 2731 goto return_error; 2732 return 0; 2733 2734 return_error: 2735 return ret; 2736 } 2737 2738 /* lan743x_pcidev_probe - Device Initialization Routine 2739 * @pdev: PCI device information struct 2740 * @id: entry in lan743x_pci_tbl 2741 * 2742 * Returns 0 on success, negative on failure 2743 * 2744 * initializes an adapter identified by a pci_dev structure. 2745 * The OS initialization, configuring of the adapter private structure, 2746 * and a hardware reset occur. 2747 **/ 2748 static int lan743x_pcidev_probe(struct pci_dev *pdev, 2749 const struct pci_device_id *id) 2750 { 2751 struct lan743x_adapter *adapter = NULL; 2752 struct net_device *netdev = NULL; 2753 int ret = -ENODEV; 2754 2755 netdev = devm_alloc_etherdev(&pdev->dev, 2756 sizeof(struct lan743x_adapter)); 2757 if (!netdev) 2758 goto return_error; 2759 2760 SET_NETDEV_DEV(netdev, &pdev->dev); 2761 pci_set_drvdata(pdev, netdev); 2762 adapter = netdev_priv(netdev); 2763 adapter->netdev = netdev; 2764 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE | 2765 NETIF_MSG_LINK | NETIF_MSG_IFUP | 2766 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED; 2767 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE; 2768 2769 ret = lan743x_pci_init(adapter, pdev); 2770 if (ret) 2771 goto return_error; 2772 2773 ret = lan743x_csr_init(adapter); 2774 if (ret) 2775 goto cleanup_pci; 2776 2777 ret = lan743x_hardware_init(adapter, pdev); 2778 if (ret) 2779 goto cleanup_pci; 2780 2781 ret = lan743x_mdiobus_init(adapter); 2782 if (ret) 2783 goto cleanup_hardware; 2784 2785 adapter->netdev->netdev_ops = &lan743x_netdev_ops; 2786 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops; 2787 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM; 2788 adapter->netdev->hw_features = adapter->netdev->features; 2789 2790 /* carrier off reporting is important to ethtool even BEFORE open */ 2791 netif_carrier_off(netdev); 2792 2793 ret = register_netdev(adapter->netdev); 2794 if (ret < 0) 2795 goto cleanup_mdiobus; 2796 return 0; 2797 2798 cleanup_mdiobus: 2799 lan743x_mdiobus_cleanup(adapter); 2800 2801 cleanup_hardware: 2802 lan743x_hardware_cleanup(adapter); 2803 2804 cleanup_pci: 2805 lan743x_pci_cleanup(adapter); 2806 2807 return_error: 2808 pr_warn("Initialization failed\n"); 2809 return ret; 2810 } 2811 2812 /** 2813 * lan743x_pcidev_remove - Device Removal Routine 2814 * @pdev: PCI device information struct 2815 * 2816 * this is called by the PCI subsystem to alert the driver 2817 * that it should release a PCI device. This could be caused by a 2818 * Hot-Plug event, or because the driver is going to be removed from 2819 * memory. 2820 **/ 2821 static void lan743x_pcidev_remove(struct pci_dev *pdev) 2822 { 2823 struct net_device *netdev = pci_get_drvdata(pdev); 2824 struct lan743x_adapter *adapter = netdev_priv(netdev); 2825 2826 lan743x_full_cleanup(adapter); 2827 } 2828 2829 static void lan743x_pcidev_shutdown(struct pci_dev *pdev) 2830 { 2831 struct net_device *netdev = pci_get_drvdata(pdev); 2832 struct lan743x_adapter *adapter = netdev_priv(netdev); 2833 2834 rtnl_lock(); 2835 netif_device_detach(netdev); 2836 2837 /* close netdev when netdev is at running state. 2838 * For instance, it is true when system goes to sleep by pm-suspend 2839 * However, it is false when system goes to sleep by suspend GUI menu 2840 */ 2841 if (netif_running(netdev)) 2842 lan743x_netdev_close(netdev); 2843 rtnl_unlock(); 2844 2845 #ifdef CONFIG_PM 2846 pci_save_state(pdev); 2847 #endif 2848 2849 /* clean up lan743x portion */ 2850 lan743x_hardware_cleanup(adapter); 2851 } 2852 2853 #ifdef CONFIG_PM 2854 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len) 2855 { 2856 return bitrev16(crc16(0xFFFF, buf, len)); 2857 } 2858 2859 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) 2860 { 2861 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; 2862 const u8 ipv6_multicast[3] = { 0x33, 0x33 }; 2863 const u8 arp_type[2] = { 0x08, 0x06 }; 2864 int mask_index; 2865 u32 pmtctl; 2866 u32 wucsr; 2867 u32 macrx; 2868 u16 crc; 2869 2870 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++) 2871 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0); 2872 2873 /* clear wake settings */ 2874 pmtctl = lan743x_csr_read(adapter, PMT_CTL); 2875 pmtctl |= PMT_CTL_WUPS_MASK_; 2876 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | 2877 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | 2878 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); 2879 2880 macrx = lan743x_csr_read(adapter, MAC_RX); 2881 2882 wucsr = 0; 2883 mask_index = 0; 2884 2885 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_; 2886 2887 if (adapter->wolopts & WAKE_PHY) { 2888 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_; 2889 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_; 2890 } 2891 if (adapter->wolopts & WAKE_MAGIC) { 2892 wucsr |= MAC_WUCSR_MPEN_; 2893 macrx |= MAC_RX_RXEN_; 2894 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2895 } 2896 if (adapter->wolopts & WAKE_UCAST) { 2897 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_; 2898 macrx |= MAC_RX_RXEN_; 2899 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2900 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2901 } 2902 if (adapter->wolopts & WAKE_BCAST) { 2903 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_; 2904 macrx |= MAC_RX_RXEN_; 2905 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2906 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2907 } 2908 if (adapter->wolopts & WAKE_MCAST) { 2909 /* IPv4 multicast */ 2910 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3); 2911 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2912 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2913 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2914 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2915 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7); 2916 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2917 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2918 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2919 mask_index++; 2920 2921 /* IPv6 multicast */ 2922 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2); 2923 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2924 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2925 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2926 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2927 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3); 2928 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2929 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2930 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2931 mask_index++; 2932 2933 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 2934 macrx |= MAC_RX_RXEN_; 2935 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2936 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2937 } 2938 if (adapter->wolopts & WAKE_ARP) { 2939 /* set MAC_WUF_CFG & WUF_MASK 2940 * for packettype (offset 12,13) = ARP (0x0806) 2941 */ 2942 crc = lan743x_pm_wakeframe_crc16(arp_type, 2); 2943 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2944 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ | 2945 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2946 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2947 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000); 2948 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2949 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2950 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2951 mask_index++; 2952 2953 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 2954 macrx |= MAC_RX_RXEN_; 2955 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2956 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2957 } 2958 2959 lan743x_csr_write(adapter, MAC_WUCSR, wucsr); 2960 lan743x_csr_write(adapter, PMT_CTL, pmtctl); 2961 lan743x_csr_write(adapter, MAC_RX, macrx); 2962 } 2963 2964 static int lan743x_pm_suspend(struct device *dev) 2965 { 2966 struct pci_dev *pdev = to_pci_dev(dev); 2967 struct net_device *netdev = pci_get_drvdata(pdev); 2968 struct lan743x_adapter *adapter = netdev_priv(netdev); 2969 int ret; 2970 2971 lan743x_pcidev_shutdown(pdev); 2972 2973 /* clear all wakes */ 2974 lan743x_csr_write(adapter, MAC_WUCSR, 0); 2975 lan743x_csr_write(adapter, MAC_WUCSR2, 0); 2976 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF); 2977 2978 if (adapter->wolopts) 2979 lan743x_pm_set_wol(adapter); 2980 2981 /* Host sets PME_En, put D3hot */ 2982 ret = pci_prepare_to_sleep(pdev); 2983 2984 return 0; 2985 } 2986 2987 static int lan743x_pm_resume(struct device *dev) 2988 { 2989 struct pci_dev *pdev = to_pci_dev(dev); 2990 struct net_device *netdev = pci_get_drvdata(pdev); 2991 struct lan743x_adapter *adapter = netdev_priv(netdev); 2992 int ret; 2993 2994 pci_set_power_state(pdev, PCI_D0); 2995 pci_restore_state(pdev); 2996 pci_save_state(pdev); 2997 2998 ret = lan743x_hardware_init(adapter, pdev); 2999 if (ret) { 3000 netif_err(adapter, probe, adapter->netdev, 3001 "lan743x_hardware_init returned %d\n", ret); 3002 } 3003 3004 /* open netdev when netdev is at running state while resume. 3005 * For instance, it is true when system wakesup after pm-suspend 3006 * However, it is false when system wakes up after suspend GUI menu 3007 */ 3008 if (netif_running(netdev)) 3009 lan743x_netdev_open(netdev); 3010 3011 netif_device_attach(netdev); 3012 3013 return 0; 3014 } 3015 3016 static const struct dev_pm_ops lan743x_pm_ops = { 3017 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume) 3018 }; 3019 #endif /*CONFIG_PM */ 3020 3021 static const struct pci_device_id lan743x_pcidev_tbl[] = { 3022 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) }, 3023 { 0, } 3024 }; 3025 3026 static struct pci_driver lan743x_pcidev_driver = { 3027 .name = DRIVER_NAME, 3028 .id_table = lan743x_pcidev_tbl, 3029 .probe = lan743x_pcidev_probe, 3030 .remove = lan743x_pcidev_remove, 3031 #ifdef CONFIG_PM 3032 .driver.pm = &lan743x_pm_ops, 3033 #endif 3034 .shutdown = lan743x_pcidev_shutdown, 3035 }; 3036 3037 module_pci_driver(lan743x_pcidev_driver); 3038 3039 MODULE_AUTHOR(DRIVER_AUTHOR); 3040 MODULE_DESCRIPTION(DRIVER_DESC); 3041 MODULE_LICENSE("GPL"); 3042