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/of_mdio.h> 12 #include <linux/of_net.h> 13 #include <linux/phy.h> 14 #include <linux/phy_fixed.h> 15 #include <linux/rtnetlink.h> 16 #include <linux/iopoll.h> 17 #include <linux/crc16.h> 18 #include "lan743x_main.h" 19 #include "lan743x_ethtool.h" 20 21 static void lan743x_pci_cleanup(struct lan743x_adapter *adapter) 22 { 23 pci_release_selected_regions(adapter->pdev, 24 pci_select_bars(adapter->pdev, 25 IORESOURCE_MEM)); 26 pci_disable_device(adapter->pdev); 27 } 28 29 static int lan743x_pci_init(struct lan743x_adapter *adapter, 30 struct pci_dev *pdev) 31 { 32 unsigned long bars = 0; 33 int ret; 34 35 adapter->pdev = pdev; 36 ret = pci_enable_device_mem(pdev); 37 if (ret) 38 goto return_error; 39 40 netif_info(adapter, probe, adapter->netdev, 41 "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n", 42 pdev->vendor, pdev->device); 43 bars = pci_select_bars(pdev, IORESOURCE_MEM); 44 if (!test_bit(0, &bars)) 45 goto disable_device; 46 47 ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME); 48 if (ret) 49 goto disable_device; 50 51 pci_set_master(pdev); 52 return 0; 53 54 disable_device: 55 pci_disable_device(adapter->pdev); 56 57 return_error: 58 return ret; 59 } 60 61 u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset) 62 { 63 return ioread32(&adapter->csr.csr_address[offset]); 64 } 65 66 void lan743x_csr_write(struct lan743x_adapter *adapter, int offset, 67 u32 data) 68 { 69 iowrite32(data, &adapter->csr.csr_address[offset]); 70 } 71 72 #define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset) 73 74 static int lan743x_csr_light_reset(struct lan743x_adapter *adapter) 75 { 76 u32 data; 77 78 data = lan743x_csr_read(adapter, HW_CFG); 79 data |= HW_CFG_LRST_; 80 lan743x_csr_write(adapter, HW_CFG, data); 81 82 return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data, 83 !(data & HW_CFG_LRST_), 100000, 10000000); 84 } 85 86 static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter, 87 int offset, u32 bit_mask, 88 int target_value, int usleep_min, 89 int usleep_max, int count) 90 { 91 u32 data; 92 93 return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data, 94 target_value == ((data & bit_mask) ? 1 : 0), 95 usleep_max, usleep_min * count); 96 } 97 98 static int lan743x_csr_init(struct lan743x_adapter *adapter) 99 { 100 struct lan743x_csr *csr = &adapter->csr; 101 resource_size_t bar_start, bar_length; 102 int result; 103 104 bar_start = pci_resource_start(adapter->pdev, 0); 105 bar_length = pci_resource_len(adapter->pdev, 0); 106 csr->csr_address = devm_ioremap(&adapter->pdev->dev, 107 bar_start, bar_length); 108 if (!csr->csr_address) { 109 result = -ENOMEM; 110 goto clean_up; 111 } 112 113 csr->id_rev = lan743x_csr_read(adapter, ID_REV); 114 csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV); 115 netif_info(adapter, probe, adapter->netdev, 116 "ID_REV = 0x%08X, FPGA_REV = %d.%d\n", 117 csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev), 118 FPGA_REV_GET_MINOR_(csr->fpga_rev)); 119 if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) { 120 result = -ENODEV; 121 goto clean_up; 122 } 123 124 csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR; 125 switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) { 126 case ID_REV_CHIP_REV_A0_: 127 csr->flags |= LAN743X_CSR_FLAG_IS_A0; 128 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR; 129 break; 130 case ID_REV_CHIP_REV_B0_: 131 csr->flags |= LAN743X_CSR_FLAG_IS_B0; 132 break; 133 } 134 135 result = lan743x_csr_light_reset(adapter); 136 if (result) 137 goto clean_up; 138 return 0; 139 clean_up: 140 return result; 141 } 142 143 static void lan743x_intr_software_isr(void *context) 144 { 145 struct lan743x_adapter *adapter = context; 146 struct lan743x_intr *intr = &adapter->intr; 147 u32 int_sts; 148 149 int_sts = lan743x_csr_read(adapter, INT_STS); 150 if (int_sts & INT_BIT_SW_GP_) { 151 lan743x_csr_write(adapter, INT_STS, INT_BIT_SW_GP_); 152 intr->software_isr_flag = 1; 153 } 154 } 155 156 static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags) 157 { 158 struct lan743x_tx *tx = context; 159 struct lan743x_adapter *adapter = tx->adapter; 160 bool enable_flag = true; 161 u32 int_en = 0; 162 163 int_en = lan743x_csr_read(adapter, INT_EN_SET); 164 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) { 165 lan743x_csr_write(adapter, INT_EN_CLR, 166 INT_BIT_DMA_TX_(tx->channel_number)); 167 } 168 169 if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) { 170 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 171 u32 dmac_int_sts; 172 u32 dmac_int_en; 173 174 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) 175 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 176 else 177 dmac_int_sts = ioc_bit; 178 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) 179 dmac_int_en = lan743x_csr_read(adapter, 180 DMAC_INT_EN_SET); 181 else 182 dmac_int_en = ioc_bit; 183 184 dmac_int_en &= ioc_bit; 185 dmac_int_sts &= dmac_int_en; 186 if (dmac_int_sts & ioc_bit) { 187 napi_schedule(&tx->napi); 188 enable_flag = false;/* poll func will enable later */ 189 } 190 } 191 192 if (enable_flag) 193 /* enable isr */ 194 lan743x_csr_write(adapter, INT_EN_SET, 195 INT_BIT_DMA_TX_(tx->channel_number)); 196 } 197 198 static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags) 199 { 200 struct lan743x_rx *rx = context; 201 struct lan743x_adapter *adapter = rx->adapter; 202 bool enable_flag = true; 203 204 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) { 205 lan743x_csr_write(adapter, INT_EN_CLR, 206 INT_BIT_DMA_RX_(rx->channel_number)); 207 } 208 209 if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) { 210 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number); 211 u32 dmac_int_sts; 212 u32 dmac_int_en; 213 214 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) 215 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 216 else 217 dmac_int_sts = rx_frame_bit; 218 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) 219 dmac_int_en = lan743x_csr_read(adapter, 220 DMAC_INT_EN_SET); 221 else 222 dmac_int_en = rx_frame_bit; 223 224 dmac_int_en &= rx_frame_bit; 225 dmac_int_sts &= dmac_int_en; 226 if (dmac_int_sts & rx_frame_bit) { 227 napi_schedule(&rx->napi); 228 enable_flag = false;/* poll funct will enable later */ 229 } 230 } 231 232 if (enable_flag) { 233 /* enable isr */ 234 lan743x_csr_write(adapter, INT_EN_SET, 235 INT_BIT_DMA_RX_(rx->channel_number)); 236 } 237 } 238 239 static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags) 240 { 241 struct lan743x_adapter *adapter = context; 242 unsigned int channel; 243 244 if (int_sts & INT_BIT_ALL_RX_) { 245 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS; 246 channel++) { 247 u32 int_bit = INT_BIT_DMA_RX_(channel); 248 249 if (int_sts & int_bit) { 250 lan743x_rx_isr(&adapter->rx[channel], 251 int_bit, flags); 252 int_sts &= ~int_bit; 253 } 254 } 255 } 256 if (int_sts & INT_BIT_ALL_TX_) { 257 for (channel = 0; channel < LAN743X_USED_TX_CHANNELS; 258 channel++) { 259 u32 int_bit = INT_BIT_DMA_TX_(channel); 260 261 if (int_sts & int_bit) { 262 lan743x_tx_isr(&adapter->tx[channel], 263 int_bit, flags); 264 int_sts &= ~int_bit; 265 } 266 } 267 } 268 if (int_sts & INT_BIT_ALL_OTHER_) { 269 if (int_sts & INT_BIT_SW_GP_) { 270 lan743x_intr_software_isr(adapter); 271 int_sts &= ~INT_BIT_SW_GP_; 272 } 273 if (int_sts & INT_BIT_1588_) { 274 lan743x_ptp_isr(adapter); 275 int_sts &= ~INT_BIT_1588_; 276 } 277 } 278 if (int_sts) 279 lan743x_csr_write(adapter, INT_EN_CLR, int_sts); 280 } 281 282 static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr) 283 { 284 struct lan743x_vector *vector = ptr; 285 struct lan743x_adapter *adapter = vector->adapter; 286 irqreturn_t result = IRQ_NONE; 287 u32 int_enables; 288 u32 int_sts; 289 290 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) { 291 int_sts = lan743x_csr_read(adapter, INT_STS); 292 } else if (vector->flags & 293 (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C | 294 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) { 295 int_sts = lan743x_csr_read(adapter, INT_STS_R2C); 296 } else { 297 /* use mask as implied status */ 298 int_sts = vector->int_mask | INT_BIT_MAS_; 299 } 300 301 if (!(int_sts & INT_BIT_MAS_)) 302 goto irq_done; 303 304 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR) 305 /* disable vector interrupt */ 306 lan743x_csr_write(adapter, 307 INT_VEC_EN_CLR, 308 INT_VEC_EN_(vector->vector_index)); 309 310 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR) 311 /* disable master interrupt */ 312 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_); 313 314 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) { 315 int_enables = lan743x_csr_read(adapter, INT_EN_SET); 316 } else { 317 /* use vector mask as implied enable mask */ 318 int_enables = vector->int_mask; 319 } 320 321 int_sts &= int_enables; 322 int_sts &= vector->int_mask; 323 if (int_sts) { 324 if (vector->handler) { 325 vector->handler(vector->context, 326 int_sts, vector->flags); 327 } else { 328 /* disable interrupts on this vector */ 329 lan743x_csr_write(adapter, INT_EN_CLR, 330 vector->int_mask); 331 } 332 result = IRQ_HANDLED; 333 } 334 335 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET) 336 /* enable master interrupt */ 337 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_); 338 339 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET) 340 /* enable vector interrupt */ 341 lan743x_csr_write(adapter, 342 INT_VEC_EN_SET, 343 INT_VEC_EN_(vector->vector_index)); 344 irq_done: 345 return result; 346 } 347 348 static int lan743x_intr_test_isr(struct lan743x_adapter *adapter) 349 { 350 struct lan743x_intr *intr = &adapter->intr; 351 int result = -ENODEV; 352 int timeout = 10; 353 354 intr->software_isr_flag = 0; 355 356 /* enable interrupt */ 357 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_); 358 359 /* activate interrupt here */ 360 lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_); 361 while ((timeout > 0) && (!(intr->software_isr_flag))) { 362 usleep_range(1000, 20000); 363 timeout--; 364 } 365 366 if (intr->software_isr_flag) 367 result = 0; 368 369 /* disable interrupts */ 370 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_); 371 return result; 372 } 373 374 static int lan743x_intr_register_isr(struct lan743x_adapter *adapter, 375 int vector_index, u32 flags, 376 u32 int_mask, 377 lan743x_vector_handler handler, 378 void *context) 379 { 380 struct lan743x_vector *vector = &adapter->intr.vector_list 381 [vector_index]; 382 int ret; 383 384 vector->adapter = adapter; 385 vector->flags = flags; 386 vector->vector_index = vector_index; 387 vector->int_mask = int_mask; 388 vector->handler = handler; 389 vector->context = context; 390 391 ret = request_irq(vector->irq, 392 lan743x_intr_entry_isr, 393 (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ? 394 IRQF_SHARED : 0, DRIVER_NAME, vector); 395 if (ret) { 396 vector->handler = NULL; 397 vector->context = NULL; 398 vector->int_mask = 0; 399 vector->flags = 0; 400 } 401 return ret; 402 } 403 404 static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter, 405 int vector_index) 406 { 407 struct lan743x_vector *vector = &adapter->intr.vector_list 408 [vector_index]; 409 410 free_irq(vector->irq, vector); 411 vector->handler = NULL; 412 vector->context = NULL; 413 vector->int_mask = 0; 414 vector->flags = 0; 415 } 416 417 static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter, 418 u32 int_mask) 419 { 420 int index; 421 422 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) { 423 if (adapter->intr.vector_list[index].int_mask & int_mask) 424 return adapter->intr.vector_list[index].flags; 425 } 426 return 0; 427 } 428 429 static void lan743x_intr_close(struct lan743x_adapter *adapter) 430 { 431 struct lan743x_intr *intr = &adapter->intr; 432 int index = 0; 433 434 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_); 435 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF); 436 437 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) { 438 if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) { 439 lan743x_intr_unregister_isr(adapter, index); 440 intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index); 441 } 442 } 443 444 if (intr->flags & INTR_FLAG_MSI_ENABLED) { 445 pci_disable_msi(adapter->pdev); 446 intr->flags &= ~INTR_FLAG_MSI_ENABLED; 447 } 448 449 if (intr->flags & INTR_FLAG_MSIX_ENABLED) { 450 pci_disable_msix(adapter->pdev); 451 intr->flags &= ~INTR_FLAG_MSIX_ENABLED; 452 } 453 } 454 455 static int lan743x_intr_open(struct lan743x_adapter *adapter) 456 { 457 struct msix_entry msix_entries[LAN743X_MAX_VECTOR_COUNT]; 458 struct lan743x_intr *intr = &adapter->intr; 459 u32 int_vec_en_auto_clr = 0; 460 u32 int_vec_map0 = 0; 461 u32 int_vec_map1 = 0; 462 int ret = -ENODEV; 463 int index = 0; 464 u32 flags = 0; 465 466 intr->number_of_vectors = 0; 467 468 /* Try to set up MSIX interrupts */ 469 memset(&msix_entries[0], 0, 470 sizeof(struct msix_entry) * LAN743X_MAX_VECTOR_COUNT); 471 for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) 472 msix_entries[index].entry = index; 473 ret = pci_enable_msix_range(adapter->pdev, 474 msix_entries, 1, 475 1 + LAN743X_USED_TX_CHANNELS + 476 LAN743X_USED_RX_CHANNELS); 477 478 if (ret > 0) { 479 intr->flags |= INTR_FLAG_MSIX_ENABLED; 480 intr->number_of_vectors = ret; 481 intr->using_vectors = true; 482 for (index = 0; index < intr->number_of_vectors; index++) 483 intr->vector_list[index].irq = msix_entries 484 [index].vector; 485 netif_info(adapter, ifup, adapter->netdev, 486 "using MSIX interrupts, number of vectors = %d\n", 487 intr->number_of_vectors); 488 } 489 490 /* If MSIX failed try to setup using MSI interrupts */ 491 if (!intr->number_of_vectors) { 492 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 493 if (!pci_enable_msi(adapter->pdev)) { 494 intr->flags |= INTR_FLAG_MSI_ENABLED; 495 intr->number_of_vectors = 1; 496 intr->using_vectors = true; 497 intr->vector_list[0].irq = 498 adapter->pdev->irq; 499 netif_info(adapter, ifup, adapter->netdev, 500 "using MSI interrupts, number of vectors = %d\n", 501 intr->number_of_vectors); 502 } 503 } 504 } 505 506 /* If MSIX, and MSI failed, setup using legacy interrupt */ 507 if (!intr->number_of_vectors) { 508 intr->number_of_vectors = 1; 509 intr->using_vectors = false; 510 intr->vector_list[0].irq = intr->irq; 511 netif_info(adapter, ifup, adapter->netdev, 512 "using legacy interrupts\n"); 513 } 514 515 /* At this point we must have at least one irq */ 516 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF); 517 518 /* map all interrupts to vector 0 */ 519 lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000); 520 lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000); 521 lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000); 522 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 523 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 524 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 525 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR; 526 527 if (intr->using_vectors) { 528 flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 529 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 530 } else { 531 flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR | 532 LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET | 533 LAN743X_VECTOR_FLAG_IRQ_SHARED; 534 } 535 536 if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 537 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ; 538 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C; 539 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR; 540 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK; 541 flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C; 542 flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C; 543 } 544 545 ret = lan743x_intr_register_isr(adapter, 0, flags, 546 INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ | 547 INT_BIT_ALL_OTHER_, 548 lan743x_intr_shared_isr, adapter); 549 if (ret) 550 goto clean_up; 551 intr->flags |= INTR_FLAG_IRQ_REQUESTED(0); 552 553 if (intr->using_vectors) 554 lan743x_csr_write(adapter, INT_VEC_EN_SET, 555 INT_VEC_EN_(0)); 556 557 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 558 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD); 559 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD); 560 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD); 561 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD); 562 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD); 563 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD); 564 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD); 565 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD); 566 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432); 567 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001); 568 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF); 569 } 570 571 /* enable interrupts */ 572 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_); 573 ret = lan743x_intr_test_isr(adapter); 574 if (ret) 575 goto clean_up; 576 577 if (intr->number_of_vectors > 1) { 578 int number_of_tx_vectors = intr->number_of_vectors - 1; 579 580 if (number_of_tx_vectors > LAN743X_USED_TX_CHANNELS) 581 number_of_tx_vectors = LAN743X_USED_TX_CHANNELS; 582 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 583 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 584 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 585 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR | 586 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 587 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 588 589 if (adapter->csr.flags & 590 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 591 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 592 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 593 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 594 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 595 } 596 597 for (index = 0; index < number_of_tx_vectors; index++) { 598 u32 int_bit = INT_BIT_DMA_TX_(index); 599 int vector = index + 1; 600 601 /* map TX interrupt to vector */ 602 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector); 603 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1); 604 605 /* Remove TX interrupt from shared mask */ 606 intr->vector_list[0].int_mask &= ~int_bit; 607 ret = lan743x_intr_register_isr(adapter, vector, flags, 608 int_bit, lan743x_tx_isr, 609 &adapter->tx[index]); 610 if (ret) 611 goto clean_up; 612 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 613 if (!(flags & 614 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)) 615 lan743x_csr_write(adapter, INT_VEC_EN_SET, 616 INT_VEC_EN_(vector)); 617 } 618 } 619 if ((intr->number_of_vectors - LAN743X_USED_TX_CHANNELS) > 1) { 620 int number_of_rx_vectors = intr->number_of_vectors - 621 LAN743X_USED_TX_CHANNELS - 1; 622 623 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS) 624 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS; 625 626 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 627 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 628 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 629 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR | 630 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 631 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 632 633 if (adapter->csr.flags & 634 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 635 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR | 636 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 637 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 638 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 639 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 640 } 641 for (index = 0; index < number_of_rx_vectors; index++) { 642 int vector = index + 1 + LAN743X_USED_TX_CHANNELS; 643 u32 int_bit = INT_BIT_DMA_RX_(index); 644 645 /* map RX interrupt to vector */ 646 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector); 647 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0); 648 if (flags & 649 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) { 650 int_vec_en_auto_clr |= INT_VEC_EN_(vector); 651 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR, 652 int_vec_en_auto_clr); 653 } 654 655 /* Remove RX interrupt from shared mask */ 656 intr->vector_list[0].int_mask &= ~int_bit; 657 ret = lan743x_intr_register_isr(adapter, vector, flags, 658 int_bit, lan743x_rx_isr, 659 &adapter->rx[index]); 660 if (ret) 661 goto clean_up; 662 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 663 664 lan743x_csr_write(adapter, INT_VEC_EN_SET, 665 INT_VEC_EN_(vector)); 666 } 667 } 668 return 0; 669 670 clean_up: 671 lan743x_intr_close(adapter); 672 return ret; 673 } 674 675 static int lan743x_dp_write(struct lan743x_adapter *adapter, 676 u32 select, u32 addr, u32 length, u32 *buf) 677 { 678 int ret = -EIO; 679 u32 dp_sel; 680 int i; 681 682 mutex_lock(&adapter->dp_lock); 683 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_, 684 1, 40, 100, 100)) 685 goto unlock; 686 dp_sel = lan743x_csr_read(adapter, DP_SEL); 687 dp_sel &= ~DP_SEL_MASK_; 688 dp_sel |= select; 689 lan743x_csr_write(adapter, DP_SEL, dp_sel); 690 691 for (i = 0; i < length; i++) { 692 lan743x_csr_write(adapter, DP_ADDR, addr + i); 693 lan743x_csr_write(adapter, DP_DATA_0, buf[i]); 694 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_); 695 if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_, 696 1, 40, 100, 100)) 697 goto unlock; 698 } 699 ret = 0; 700 701 unlock: 702 mutex_unlock(&adapter->dp_lock); 703 return ret; 704 } 705 706 static u32 lan743x_mac_mii_access(u16 id, u16 index, int read) 707 { 708 u32 ret; 709 710 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) & 711 MAC_MII_ACC_PHY_ADDR_MASK_; 712 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) & 713 MAC_MII_ACC_MIIRINDA_MASK_; 714 715 if (read) 716 ret |= MAC_MII_ACC_MII_READ_; 717 else 718 ret |= MAC_MII_ACC_MII_WRITE_; 719 ret |= MAC_MII_ACC_MII_BUSY_; 720 721 return ret; 722 } 723 724 static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter) 725 { 726 u32 data; 727 728 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data, 729 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000); 730 } 731 732 static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index) 733 { 734 struct lan743x_adapter *adapter = bus->priv; 735 u32 val, mii_access; 736 int ret; 737 738 /* comfirm MII not busy */ 739 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 740 if (ret < 0) 741 return ret; 742 743 /* set the address, index & direction (read from PHY) */ 744 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ); 745 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 746 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 747 if (ret < 0) 748 return ret; 749 750 val = lan743x_csr_read(adapter, MAC_MII_DATA); 751 return (int)(val & 0xFFFF); 752 } 753 754 static int lan743x_mdiobus_write(struct mii_bus *bus, 755 int phy_id, int index, u16 regval) 756 { 757 struct lan743x_adapter *adapter = bus->priv; 758 u32 val, mii_access; 759 int ret; 760 761 /* confirm MII not busy */ 762 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 763 if (ret < 0) 764 return ret; 765 val = (u32)regval; 766 lan743x_csr_write(adapter, MAC_MII_DATA, val); 767 768 /* set the address, index & direction (write to PHY) */ 769 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE); 770 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 771 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 772 return ret; 773 } 774 775 static void lan743x_mac_set_address(struct lan743x_adapter *adapter, 776 u8 *addr) 777 { 778 u32 addr_lo, addr_hi; 779 780 addr_lo = addr[0] | 781 addr[1] << 8 | 782 addr[2] << 16 | 783 addr[3] << 24; 784 addr_hi = addr[4] | 785 addr[5] << 8; 786 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo); 787 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi); 788 789 ether_addr_copy(adapter->mac_address, addr); 790 netif_info(adapter, drv, adapter->netdev, 791 "MAC address set to %pM\n", addr); 792 } 793 794 static int lan743x_mac_init(struct lan743x_adapter *adapter) 795 { 796 bool mac_address_valid = true; 797 struct net_device *netdev; 798 u32 mac_addr_hi = 0; 799 u32 mac_addr_lo = 0; 800 u32 data; 801 802 netdev = adapter->netdev; 803 804 /* disable auto duplex, and speed detection. Phylib does that */ 805 data = lan743x_csr_read(adapter, MAC_CR); 806 data &= ~(MAC_CR_ADD_ | MAC_CR_ASD_); 807 data |= MAC_CR_CNTR_RST_; 808 lan743x_csr_write(adapter, MAC_CR, data); 809 810 if (!is_valid_ether_addr(adapter->mac_address)) { 811 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH); 812 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL); 813 adapter->mac_address[0] = mac_addr_lo & 0xFF; 814 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF; 815 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF; 816 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF; 817 adapter->mac_address[4] = mac_addr_hi & 0xFF; 818 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF; 819 820 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) && 821 mac_addr_lo == 0xFFFFFFFF) { 822 mac_address_valid = false; 823 } else if (!is_valid_ether_addr(adapter->mac_address)) { 824 mac_address_valid = false; 825 } 826 827 if (!mac_address_valid) 828 eth_random_addr(adapter->mac_address); 829 } 830 lan743x_mac_set_address(adapter, adapter->mac_address); 831 ether_addr_copy(netdev->dev_addr, adapter->mac_address); 832 833 return 0; 834 } 835 836 static int lan743x_mac_open(struct lan743x_adapter *adapter) 837 { 838 int ret = 0; 839 u32 temp; 840 841 temp = lan743x_csr_read(adapter, MAC_RX); 842 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_); 843 temp = lan743x_csr_read(adapter, MAC_TX); 844 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_); 845 return ret; 846 } 847 848 static void lan743x_mac_close(struct lan743x_adapter *adapter) 849 { 850 u32 temp; 851 852 temp = lan743x_csr_read(adapter, MAC_TX); 853 temp &= ~MAC_TX_TXEN_; 854 lan743x_csr_write(adapter, MAC_TX, temp); 855 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_, 856 1, 1000, 20000, 100); 857 858 temp = lan743x_csr_read(adapter, MAC_RX); 859 temp &= ~MAC_RX_RXEN_; 860 lan743x_csr_write(adapter, MAC_RX, temp); 861 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 862 1, 1000, 20000, 100); 863 } 864 865 static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter, 866 bool tx_enable, bool rx_enable) 867 { 868 u32 flow_setting = 0; 869 870 /* set maximum pause time because when fifo space frees 871 * up a zero value pause frame will be sent to release the pause 872 */ 873 flow_setting = MAC_FLOW_CR_FCPT_MASK_; 874 if (tx_enable) 875 flow_setting |= MAC_FLOW_CR_TX_FCEN_; 876 if (rx_enable) 877 flow_setting |= MAC_FLOW_CR_RX_FCEN_; 878 lan743x_csr_write(adapter, MAC_FLOW, flow_setting); 879 } 880 881 static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu) 882 { 883 int enabled = 0; 884 u32 mac_rx = 0; 885 886 mac_rx = lan743x_csr_read(adapter, MAC_RX); 887 if (mac_rx & MAC_RX_RXEN_) { 888 enabled = 1; 889 if (mac_rx & MAC_RX_RXD_) { 890 lan743x_csr_write(adapter, MAC_RX, mac_rx); 891 mac_rx &= ~MAC_RX_RXD_; 892 } 893 mac_rx &= ~MAC_RX_RXEN_; 894 lan743x_csr_write(adapter, MAC_RX, mac_rx); 895 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 896 1, 1000, 20000, 100); 897 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_); 898 } 899 900 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_); 901 mac_rx |= (((new_mtu + ETH_HLEN + 4) << MAC_RX_MAX_SIZE_SHIFT_) & 902 MAC_RX_MAX_SIZE_MASK_); 903 lan743x_csr_write(adapter, MAC_RX, mac_rx); 904 905 if (enabled) { 906 mac_rx |= MAC_RX_RXEN_; 907 lan743x_csr_write(adapter, MAC_RX, mac_rx); 908 } 909 return 0; 910 } 911 912 /* PHY */ 913 static int lan743x_phy_reset(struct lan743x_adapter *adapter) 914 { 915 u32 data; 916 917 /* Only called with in probe, and before mdiobus_register */ 918 919 data = lan743x_csr_read(adapter, PMT_CTL); 920 data |= PMT_CTL_ETH_PHY_RST_; 921 lan743x_csr_write(adapter, PMT_CTL, data); 922 923 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data, 924 (!(data & PMT_CTL_ETH_PHY_RST_) && 925 (data & PMT_CTL_READY_)), 926 50000, 1000000); 927 } 928 929 static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter, 930 u8 duplex, u16 local_adv, 931 u16 remote_adv) 932 { 933 struct lan743x_phy *phy = &adapter->phy; 934 u8 cap; 935 936 if (phy->fc_autoneg) 937 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv); 938 else 939 cap = phy->fc_request_control; 940 941 lan743x_mac_flow_ctrl_set_enables(adapter, 942 cap & FLOW_CTRL_TX, 943 cap & FLOW_CTRL_RX); 944 } 945 946 static int lan743x_phy_init(struct lan743x_adapter *adapter) 947 { 948 return lan743x_phy_reset(adapter); 949 } 950 951 static void lan743x_phy_link_status_change(struct net_device *netdev) 952 { 953 struct lan743x_adapter *adapter = netdev_priv(netdev); 954 struct phy_device *phydev = netdev->phydev; 955 u32 data; 956 957 phy_print_status(phydev); 958 if (phydev->state == PHY_RUNNING) { 959 struct ethtool_link_ksettings ksettings; 960 int remote_advertisement = 0; 961 int local_advertisement = 0; 962 963 data = lan743x_csr_read(adapter, MAC_CR); 964 965 /* set interface mode */ 966 if (phy_interface_mode_is_rgmii(adapter->phy_mode)) 967 /* RGMII */ 968 data &= ~MAC_CR_MII_EN_; 969 else 970 /* GMII */ 971 data |= MAC_CR_MII_EN_; 972 973 /* set duplex mode */ 974 if (phydev->duplex) 975 data |= MAC_CR_DPX_; 976 else 977 data &= ~MAC_CR_DPX_; 978 979 /* set bus speed */ 980 switch (phydev->speed) { 981 case SPEED_10: 982 data &= ~MAC_CR_CFG_H_; 983 data &= ~MAC_CR_CFG_L_; 984 break; 985 case SPEED_100: 986 data &= ~MAC_CR_CFG_H_; 987 data |= MAC_CR_CFG_L_; 988 break; 989 case SPEED_1000: 990 data |= MAC_CR_CFG_H_; 991 data &= ~MAC_CR_CFG_L_; 992 break; 993 } 994 lan743x_csr_write(adapter, MAC_CR, data); 995 996 memset(&ksettings, 0, sizeof(ksettings)); 997 phy_ethtool_get_link_ksettings(netdev, &ksettings); 998 local_advertisement = 999 linkmode_adv_to_mii_adv_t(phydev->advertising); 1000 remote_advertisement = 1001 linkmode_adv_to_mii_adv_t(phydev->lp_advertising); 1002 1003 lan743x_phy_update_flowcontrol(adapter, 1004 ksettings.base.duplex, 1005 local_advertisement, 1006 remote_advertisement); 1007 lan743x_ptp_update_latency(adapter, ksettings.base.speed); 1008 } 1009 } 1010 1011 static void lan743x_phy_close(struct lan743x_adapter *adapter) 1012 { 1013 struct net_device *netdev = adapter->netdev; 1014 1015 phy_stop(netdev->phydev); 1016 phy_disconnect(netdev->phydev); 1017 netdev->phydev = NULL; 1018 } 1019 1020 static int lan743x_phy_open(struct lan743x_adapter *adapter) 1021 { 1022 struct lan743x_phy *phy = &adapter->phy; 1023 struct device_node *phynode; 1024 struct phy_device *phydev; 1025 struct net_device *netdev; 1026 int ret = -EIO; 1027 1028 netdev = adapter->netdev; 1029 phynode = of_node_get(adapter->pdev->dev.of_node); 1030 adapter->phy_mode = PHY_INTERFACE_MODE_GMII; 1031 1032 if (phynode) { 1033 of_get_phy_mode(phynode, &adapter->phy_mode); 1034 1035 if (of_phy_is_fixed_link(phynode)) { 1036 ret = of_phy_register_fixed_link(phynode); 1037 if (ret) { 1038 netdev_err(netdev, 1039 "cannot register fixed PHY\n"); 1040 of_node_put(phynode); 1041 goto return_error; 1042 } 1043 } 1044 phydev = of_phy_connect(netdev, phynode, 1045 lan743x_phy_link_status_change, 0, 1046 adapter->phy_mode); 1047 of_node_put(phynode); 1048 if (!phydev) 1049 goto return_error; 1050 } else { 1051 phydev = phy_find_first(adapter->mdiobus); 1052 if (!phydev) 1053 goto return_error; 1054 1055 ret = phy_connect_direct(netdev, phydev, 1056 lan743x_phy_link_status_change, 1057 adapter->phy_mode); 1058 if (ret) 1059 goto return_error; 1060 } 1061 1062 /* MAC doesn't support 1000T Half */ 1063 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); 1064 1065 /* support both flow controls */ 1066 phy_support_asym_pause(phydev); 1067 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); 1068 phy->fc_autoneg = phydev->autoneg; 1069 1070 phy_start(phydev); 1071 phy_start_aneg(phydev); 1072 return 0; 1073 1074 return_error: 1075 return ret; 1076 } 1077 1078 static void lan743x_rfe_open(struct lan743x_adapter *adapter) 1079 { 1080 lan743x_csr_write(adapter, RFE_RSS_CFG, 1081 RFE_RSS_CFG_UDP_IPV6_EX_ | 1082 RFE_RSS_CFG_TCP_IPV6_EX_ | 1083 RFE_RSS_CFG_IPV6_EX_ | 1084 RFE_RSS_CFG_UDP_IPV6_ | 1085 RFE_RSS_CFG_TCP_IPV6_ | 1086 RFE_RSS_CFG_IPV6_ | 1087 RFE_RSS_CFG_UDP_IPV4_ | 1088 RFE_RSS_CFG_TCP_IPV4_ | 1089 RFE_RSS_CFG_IPV4_ | 1090 RFE_RSS_CFG_VALID_HASH_BITS_ | 1091 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ | 1092 RFE_RSS_CFG_RSS_HASH_STORE_ | 1093 RFE_RSS_CFG_RSS_ENABLE_); 1094 } 1095 1096 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter) 1097 { 1098 u8 *mac_addr; 1099 u32 mac_addr_hi = 0; 1100 u32 mac_addr_lo = 0; 1101 1102 /* Add mac address to perfect Filter */ 1103 mac_addr = adapter->mac_address; 1104 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) | 1105 (((u32)(mac_addr[1])) << 8) | 1106 (((u32)(mac_addr[2])) << 16) | 1107 (((u32)(mac_addr[3])) << 24)); 1108 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) | 1109 (((u32)(mac_addr[5])) << 8)); 1110 1111 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo); 1112 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0), 1113 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_); 1114 } 1115 1116 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter) 1117 { 1118 struct net_device *netdev = adapter->netdev; 1119 u32 hash_table[DP_SEL_VHF_HASH_LEN]; 1120 u32 rfctl; 1121 u32 data; 1122 1123 rfctl = lan743x_csr_read(adapter, RFE_CTL); 1124 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ | 1125 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); 1126 rfctl |= RFE_CTL_AB_; 1127 if (netdev->flags & IFF_PROMISC) { 1128 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_; 1129 } else { 1130 if (netdev->flags & IFF_ALLMULTI) 1131 rfctl |= RFE_CTL_AM_; 1132 } 1133 1134 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32)); 1135 if (netdev_mc_count(netdev)) { 1136 struct netdev_hw_addr *ha; 1137 int i; 1138 1139 rfctl |= RFE_CTL_DA_PERFECT_; 1140 i = 1; 1141 netdev_for_each_mc_addr(ha, netdev) { 1142 /* set first 32 into Perfect Filter */ 1143 if (i < 33) { 1144 lan743x_csr_write(adapter, 1145 RFE_ADDR_FILT_HI(i), 0); 1146 data = ha->addr[3]; 1147 data = ha->addr[2] | (data << 8); 1148 data = ha->addr[1] | (data << 8); 1149 data = ha->addr[0] | (data << 8); 1150 lan743x_csr_write(adapter, 1151 RFE_ADDR_FILT_LO(i), data); 1152 data = ha->addr[5]; 1153 data = ha->addr[4] | (data << 8); 1154 data |= RFE_ADDR_FILT_HI_VALID_; 1155 lan743x_csr_write(adapter, 1156 RFE_ADDR_FILT_HI(i), data); 1157 } else { 1158 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >> 1159 23) & 0x1FF; 1160 hash_table[bitnum / 32] |= (1 << (bitnum % 32)); 1161 rfctl |= RFE_CTL_MCAST_HASH_; 1162 } 1163 i++; 1164 } 1165 } 1166 1167 lan743x_dp_write(adapter, DP_SEL_RFE_RAM, 1168 DP_SEL_VHF_VLAN_LEN, 1169 DP_SEL_VHF_HASH_LEN, hash_table); 1170 lan743x_csr_write(adapter, RFE_CTL, rfctl); 1171 } 1172 1173 static int lan743x_dmac_init(struct lan743x_adapter *adapter) 1174 { 1175 u32 data = 0; 1176 1177 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_); 1178 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_, 1179 0, 1000, 20000, 100); 1180 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) { 1181 case DMA_DESCRIPTOR_SPACING_16: 1182 data = DMAC_CFG_MAX_DSPACE_16_; 1183 break; 1184 case DMA_DESCRIPTOR_SPACING_32: 1185 data = DMAC_CFG_MAX_DSPACE_32_; 1186 break; 1187 case DMA_DESCRIPTOR_SPACING_64: 1188 data = DMAC_CFG_MAX_DSPACE_64_; 1189 break; 1190 case DMA_DESCRIPTOR_SPACING_128: 1191 data = DMAC_CFG_MAX_DSPACE_128_; 1192 break; 1193 default: 1194 return -EPERM; 1195 } 1196 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1197 data |= DMAC_CFG_COAL_EN_; 1198 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_; 1199 data |= DMAC_CFG_MAX_READ_REQ_SET_(6); 1200 lan743x_csr_write(adapter, DMAC_CFG, data); 1201 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1); 1202 data |= DMAC_COAL_CFG_TIMER_TX_START_; 1203 data |= DMAC_COAL_CFG_FLUSH_INTS_; 1204 data |= DMAC_COAL_CFG_INT_EXIT_COAL_; 1205 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_; 1206 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A); 1207 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C); 1208 lan743x_csr_write(adapter, DMAC_COAL_CFG, data); 1209 data = DMAC_OBFF_TX_THRES_SET_(0x08); 1210 data |= DMAC_OBFF_RX_THRES_SET_(0x0A); 1211 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data); 1212 return 0; 1213 } 1214 1215 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter, 1216 int tx_channel) 1217 { 1218 u32 dmac_cmd = 0; 1219 1220 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1221 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1222 DMAC_CMD_START_T_(tx_channel)), 1223 (dmac_cmd & 1224 DMAC_CMD_STOP_T_(tx_channel))); 1225 } 1226 1227 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter, 1228 int tx_channel) 1229 { 1230 int timeout = 100; 1231 int result = 0; 1232 1233 while (timeout && 1234 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) == 1235 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1236 usleep_range(1000, 20000); 1237 timeout--; 1238 } 1239 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1240 result = -ENODEV; 1241 return result; 1242 } 1243 1244 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter, 1245 int rx_channel) 1246 { 1247 u32 dmac_cmd = 0; 1248 1249 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1250 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1251 DMAC_CMD_START_R_(rx_channel)), 1252 (dmac_cmd & 1253 DMAC_CMD_STOP_R_(rx_channel))); 1254 } 1255 1256 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter, 1257 int rx_channel) 1258 { 1259 int timeout = 100; 1260 int result = 0; 1261 1262 while (timeout && 1263 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) == 1264 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1265 usleep_range(1000, 20000); 1266 timeout--; 1267 } 1268 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1269 result = -ENODEV; 1270 return result; 1271 } 1272 1273 static void lan743x_tx_release_desc(struct lan743x_tx *tx, 1274 int descriptor_index, bool cleanup) 1275 { 1276 struct lan743x_tx_buffer_info *buffer_info = NULL; 1277 struct lan743x_tx_descriptor *descriptor = NULL; 1278 u32 descriptor_type = 0; 1279 bool ignore_sync; 1280 1281 descriptor = &tx->ring_cpu_ptr[descriptor_index]; 1282 buffer_info = &tx->buffer_info[descriptor_index]; 1283 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE)) 1284 goto done; 1285 1286 descriptor_type = (descriptor->data0) & 1287 TX_DESC_DATA0_DTYPE_MASK_; 1288 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_) 1289 goto clean_up_data_descriptor; 1290 else 1291 goto clear_active; 1292 1293 clean_up_data_descriptor: 1294 if (buffer_info->dma_ptr) { 1295 if (buffer_info->flags & 1296 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) { 1297 dma_unmap_page(&tx->adapter->pdev->dev, 1298 buffer_info->dma_ptr, 1299 buffer_info->buffer_length, 1300 DMA_TO_DEVICE); 1301 } else { 1302 dma_unmap_single(&tx->adapter->pdev->dev, 1303 buffer_info->dma_ptr, 1304 buffer_info->buffer_length, 1305 DMA_TO_DEVICE); 1306 } 1307 buffer_info->dma_ptr = 0; 1308 buffer_info->buffer_length = 0; 1309 } 1310 if (!buffer_info->skb) 1311 goto clear_active; 1312 1313 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) { 1314 dev_kfree_skb(buffer_info->skb); 1315 goto clear_skb; 1316 } 1317 1318 if (cleanup) { 1319 lan743x_ptp_unrequest_tx_timestamp(tx->adapter); 1320 dev_kfree_skb(buffer_info->skb); 1321 } else { 1322 ignore_sync = (buffer_info->flags & 1323 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0; 1324 lan743x_ptp_tx_timestamp_skb(tx->adapter, 1325 buffer_info->skb, ignore_sync); 1326 } 1327 1328 clear_skb: 1329 buffer_info->skb = NULL; 1330 1331 clear_active: 1332 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE; 1333 1334 done: 1335 memset(buffer_info, 0, sizeof(*buffer_info)); 1336 memset(descriptor, 0, sizeof(*descriptor)); 1337 } 1338 1339 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index) 1340 { 1341 return ((++index) % tx->ring_size); 1342 } 1343 1344 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx) 1345 { 1346 while ((*tx->head_cpu_ptr) != (tx->last_head)) { 1347 lan743x_tx_release_desc(tx, tx->last_head, false); 1348 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1349 } 1350 } 1351 1352 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx) 1353 { 1354 u32 original_head = 0; 1355 1356 original_head = tx->last_head; 1357 do { 1358 lan743x_tx_release_desc(tx, tx->last_head, true); 1359 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1360 } while (tx->last_head != original_head); 1361 memset(tx->ring_cpu_ptr, 0, 1362 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size)); 1363 memset(tx->buffer_info, 0, 1364 sizeof(*tx->buffer_info) * (tx->ring_size)); 1365 } 1366 1367 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx, 1368 struct sk_buff *skb) 1369 { 1370 int result = 1; /* 1 for the main skb buffer */ 1371 int nr_frags = 0; 1372 1373 if (skb_is_gso(skb)) 1374 result++; /* requires an extension descriptor */ 1375 nr_frags = skb_shinfo(skb)->nr_frags; 1376 result += nr_frags; /* 1 for each fragment buffer */ 1377 return result; 1378 } 1379 1380 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx) 1381 { 1382 int last_head = tx->last_head; 1383 int last_tail = tx->last_tail; 1384 1385 if (last_tail >= last_head) 1386 return tx->ring_size - last_tail + last_head - 1; 1387 else 1388 return last_head - last_tail - 1; 1389 } 1390 1391 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx, 1392 bool enable_timestamping, 1393 bool enable_onestep_sync) 1394 { 1395 if (enable_timestamping) 1396 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED; 1397 else 1398 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED; 1399 if (enable_onestep_sync) 1400 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC; 1401 else 1402 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC; 1403 } 1404 1405 static int lan743x_tx_frame_start(struct lan743x_tx *tx, 1406 unsigned char *first_buffer, 1407 unsigned int first_buffer_length, 1408 unsigned int frame_length, 1409 bool time_stamp, 1410 bool check_sum) 1411 { 1412 /* called only from within lan743x_tx_xmit_frame. 1413 * assuming tx->ring_lock has already been acquired. 1414 */ 1415 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1416 struct lan743x_tx_buffer_info *buffer_info = NULL; 1417 struct lan743x_adapter *adapter = tx->adapter; 1418 struct device *dev = &adapter->pdev->dev; 1419 dma_addr_t dma_ptr; 1420 1421 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS; 1422 tx->frame_first = tx->last_tail; 1423 tx->frame_tail = tx->frame_first; 1424 1425 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1426 buffer_info = &tx->buffer_info[tx->frame_tail]; 1427 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length, 1428 DMA_TO_DEVICE); 1429 if (dma_mapping_error(dev, dma_ptr)) 1430 return -ENOMEM; 1431 1432 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1433 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1434 tx_descriptor->data3 = (frame_length << 16) & 1435 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1436 1437 buffer_info->skb = NULL; 1438 buffer_info->dma_ptr = dma_ptr; 1439 buffer_info->buffer_length = first_buffer_length; 1440 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1441 1442 tx->frame_data0 = (first_buffer_length & 1443 TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1444 TX_DESC_DATA0_DTYPE_DATA_ | 1445 TX_DESC_DATA0_FS_ | 1446 TX_DESC_DATA0_FCS_; 1447 if (time_stamp) 1448 tx->frame_data0 |= TX_DESC_DATA0_TSE_; 1449 1450 if (check_sum) 1451 tx->frame_data0 |= TX_DESC_DATA0_ICE_ | 1452 TX_DESC_DATA0_IPE_ | 1453 TX_DESC_DATA0_TPE_; 1454 1455 /* data0 will be programmed in one of other frame assembler functions */ 1456 return 0; 1457 } 1458 1459 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx, 1460 unsigned int frame_length, 1461 int nr_frags) 1462 { 1463 /* called only from within lan743x_tx_xmit_frame. 1464 * assuming tx->ring_lock has already been acquired. 1465 */ 1466 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1467 struct lan743x_tx_buffer_info *buffer_info = NULL; 1468 1469 /* wrap up previous descriptor */ 1470 tx->frame_data0 |= TX_DESC_DATA0_EXT_; 1471 if (nr_frags <= 0) { 1472 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1473 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1474 } 1475 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1476 tx_descriptor->data0 = tx->frame_data0; 1477 1478 /* move to next descriptor */ 1479 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1480 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1481 buffer_info = &tx->buffer_info[tx->frame_tail]; 1482 1483 /* add extension descriptor */ 1484 tx_descriptor->data1 = 0; 1485 tx_descriptor->data2 = 0; 1486 tx_descriptor->data3 = 0; 1487 1488 buffer_info->skb = NULL; 1489 buffer_info->dma_ptr = 0; 1490 buffer_info->buffer_length = 0; 1491 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1492 1493 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) | 1494 TX_DESC_DATA0_DTYPE_EXT_ | 1495 TX_DESC_DATA0_EXT_LSO_; 1496 1497 /* data0 will be programmed in one of other frame assembler functions */ 1498 } 1499 1500 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx, 1501 const skb_frag_t *fragment, 1502 unsigned int frame_length) 1503 { 1504 /* called only from within lan743x_tx_xmit_frame 1505 * assuming tx->ring_lock has already been acquired 1506 */ 1507 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1508 struct lan743x_tx_buffer_info *buffer_info = NULL; 1509 struct lan743x_adapter *adapter = tx->adapter; 1510 struct device *dev = &adapter->pdev->dev; 1511 unsigned int fragment_length = 0; 1512 dma_addr_t dma_ptr; 1513 1514 fragment_length = skb_frag_size(fragment); 1515 if (!fragment_length) 1516 return 0; 1517 1518 /* wrap up previous descriptor */ 1519 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1520 tx_descriptor->data0 = tx->frame_data0; 1521 1522 /* move to next descriptor */ 1523 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1524 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1525 buffer_info = &tx->buffer_info[tx->frame_tail]; 1526 dma_ptr = skb_frag_dma_map(dev, fragment, 1527 0, fragment_length, 1528 DMA_TO_DEVICE); 1529 if (dma_mapping_error(dev, dma_ptr)) { 1530 int desc_index; 1531 1532 /* cleanup all previously setup descriptors */ 1533 desc_index = tx->frame_first; 1534 while (desc_index != tx->frame_tail) { 1535 lan743x_tx_release_desc(tx, desc_index, true); 1536 desc_index = lan743x_tx_next_index(tx, desc_index); 1537 } 1538 dma_wmb(); 1539 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1540 tx->frame_first = 0; 1541 tx->frame_data0 = 0; 1542 tx->frame_tail = 0; 1543 return -ENOMEM; 1544 } 1545 1546 tx_descriptor->data1 = DMA_ADDR_LOW32(dma_ptr); 1547 tx_descriptor->data2 = DMA_ADDR_HIGH32(dma_ptr); 1548 tx_descriptor->data3 = (frame_length << 16) & 1549 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_; 1550 1551 buffer_info->skb = NULL; 1552 buffer_info->dma_ptr = dma_ptr; 1553 buffer_info->buffer_length = fragment_length; 1554 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1555 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT; 1556 1557 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1558 TX_DESC_DATA0_DTYPE_DATA_ | 1559 TX_DESC_DATA0_FCS_; 1560 1561 /* data0 will be programmed in one of other frame assembler functions */ 1562 return 0; 1563 } 1564 1565 static void lan743x_tx_frame_end(struct lan743x_tx *tx, 1566 struct sk_buff *skb, 1567 bool time_stamp, 1568 bool ignore_sync) 1569 { 1570 /* called only from within lan743x_tx_xmit_frame 1571 * assuming tx->ring_lock has already been acquired 1572 */ 1573 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1574 struct lan743x_tx_buffer_info *buffer_info = NULL; 1575 struct lan743x_adapter *adapter = tx->adapter; 1576 u32 tx_tail_flags = 0; 1577 1578 /* wrap up previous descriptor */ 1579 if ((tx->frame_data0 & TX_DESC_DATA0_DTYPE_MASK_) == 1580 TX_DESC_DATA0_DTYPE_DATA_) { 1581 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1582 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1583 } 1584 1585 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1586 buffer_info = &tx->buffer_info[tx->frame_tail]; 1587 buffer_info->skb = skb; 1588 if (time_stamp) 1589 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED; 1590 if (ignore_sync) 1591 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC; 1592 1593 tx_descriptor->data0 = tx->frame_data0; 1594 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1595 tx->last_tail = tx->frame_tail; 1596 1597 dma_wmb(); 1598 1599 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 1600 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_; 1601 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) 1602 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ | 1603 TX_TAIL_SET_TOP_INT_EN_; 1604 1605 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1606 tx_tail_flags | tx->frame_tail); 1607 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 1608 } 1609 1610 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx, 1611 struct sk_buff *skb) 1612 { 1613 int required_number_of_descriptors = 0; 1614 unsigned int start_frame_length = 0; 1615 unsigned int frame_length = 0; 1616 unsigned int head_length = 0; 1617 unsigned long irq_flags = 0; 1618 bool do_timestamp = false; 1619 bool ignore_sync = false; 1620 int nr_frags = 0; 1621 bool gso = false; 1622 int j; 1623 1624 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb); 1625 1626 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1627 if (required_number_of_descriptors > 1628 lan743x_tx_get_avail_desc(tx)) { 1629 if (required_number_of_descriptors > (tx->ring_size - 1)) { 1630 dev_kfree_skb(skb); 1631 } else { 1632 /* save to overflow buffer */ 1633 tx->overflow_skb = skb; 1634 netif_stop_queue(tx->adapter->netdev); 1635 } 1636 goto unlock; 1637 } 1638 1639 /* space available, transmit skb */ 1640 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 1641 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) && 1642 (lan743x_ptp_request_tx_timestamp(tx->adapter))) { 1643 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 1644 do_timestamp = true; 1645 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC) 1646 ignore_sync = true; 1647 } 1648 head_length = skb_headlen(skb); 1649 frame_length = skb_pagelen(skb); 1650 nr_frags = skb_shinfo(skb)->nr_frags; 1651 start_frame_length = frame_length; 1652 gso = skb_is_gso(skb); 1653 if (gso) { 1654 start_frame_length = max(skb_shinfo(skb)->gso_size, 1655 (unsigned short)8); 1656 } 1657 1658 if (lan743x_tx_frame_start(tx, 1659 skb->data, head_length, 1660 start_frame_length, 1661 do_timestamp, 1662 skb->ip_summed == CHECKSUM_PARTIAL)) { 1663 dev_kfree_skb(skb); 1664 goto unlock; 1665 } 1666 1667 if (gso) 1668 lan743x_tx_frame_add_lso(tx, frame_length, nr_frags); 1669 1670 if (nr_frags <= 0) 1671 goto finish; 1672 1673 for (j = 0; j < nr_frags; j++) { 1674 const skb_frag_t *frag = &(skb_shinfo(skb)->frags[j]); 1675 1676 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) { 1677 /* upon error no need to call 1678 * lan743x_tx_frame_end 1679 * frame assembler clean up was performed inside 1680 * lan743x_tx_frame_add_fragment 1681 */ 1682 dev_kfree_skb(skb); 1683 goto unlock; 1684 } 1685 } 1686 1687 finish: 1688 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync); 1689 1690 unlock: 1691 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1692 return NETDEV_TX_OK; 1693 } 1694 1695 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight) 1696 { 1697 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi); 1698 struct lan743x_adapter *adapter = tx->adapter; 1699 bool start_transmitter = false; 1700 unsigned long irq_flags = 0; 1701 u32 ioc_bit = 0; 1702 u32 int_sts = 0; 1703 1704 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 1705 int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 1706 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) 1707 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit); 1708 spin_lock_irqsave(&tx->ring_lock, irq_flags); 1709 1710 /* clean up tx ring */ 1711 lan743x_tx_release_completed_descriptors(tx); 1712 if (netif_queue_stopped(adapter->netdev)) { 1713 if (tx->overflow_skb) { 1714 if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <= 1715 lan743x_tx_get_avail_desc(tx)) 1716 start_transmitter = true; 1717 } else { 1718 netif_wake_queue(adapter->netdev); 1719 } 1720 } 1721 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 1722 1723 if (start_transmitter) { 1724 /* space is now available, transmit overflow skb */ 1725 lan743x_tx_xmit_frame(tx, tx->overflow_skb); 1726 tx->overflow_skb = NULL; 1727 netif_wake_queue(adapter->netdev); 1728 } 1729 1730 if (!napi_complete(napi)) 1731 goto done; 1732 1733 /* enable isr */ 1734 lan743x_csr_write(adapter, INT_EN_SET, 1735 INT_BIT_DMA_TX_(tx->channel_number)); 1736 lan743x_csr_read(adapter, INT_STS); 1737 1738 done: 1739 return 0; 1740 } 1741 1742 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx) 1743 { 1744 if (tx->head_cpu_ptr) { 1745 dma_free_coherent(&tx->adapter->pdev->dev, 1746 sizeof(*tx->head_cpu_ptr), tx->head_cpu_ptr, 1747 tx->head_dma_ptr); 1748 tx->head_cpu_ptr = NULL; 1749 tx->head_dma_ptr = 0; 1750 } 1751 kfree(tx->buffer_info); 1752 tx->buffer_info = NULL; 1753 1754 if (tx->ring_cpu_ptr) { 1755 dma_free_coherent(&tx->adapter->pdev->dev, 1756 tx->ring_allocation_size, tx->ring_cpu_ptr, 1757 tx->ring_dma_ptr); 1758 tx->ring_allocation_size = 0; 1759 tx->ring_cpu_ptr = NULL; 1760 tx->ring_dma_ptr = 0; 1761 } 1762 tx->ring_size = 0; 1763 } 1764 1765 static int lan743x_tx_ring_init(struct lan743x_tx *tx) 1766 { 1767 size_t ring_allocation_size = 0; 1768 void *cpu_ptr = NULL; 1769 dma_addr_t dma_ptr; 1770 int ret = -ENOMEM; 1771 1772 tx->ring_size = LAN743X_TX_RING_SIZE; 1773 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) { 1774 ret = -EINVAL; 1775 goto cleanup; 1776 } 1777 ring_allocation_size = ALIGN(tx->ring_size * 1778 sizeof(struct lan743x_tx_descriptor), 1779 PAGE_SIZE); 1780 dma_ptr = 0; 1781 cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev, 1782 ring_allocation_size, &dma_ptr, GFP_KERNEL); 1783 if (!cpu_ptr) { 1784 ret = -ENOMEM; 1785 goto cleanup; 1786 } 1787 1788 tx->ring_allocation_size = ring_allocation_size; 1789 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr; 1790 tx->ring_dma_ptr = dma_ptr; 1791 1792 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL); 1793 if (!cpu_ptr) { 1794 ret = -ENOMEM; 1795 goto cleanup; 1796 } 1797 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr; 1798 dma_ptr = 0; 1799 cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev, 1800 sizeof(*tx->head_cpu_ptr), &dma_ptr, 1801 GFP_KERNEL); 1802 if (!cpu_ptr) { 1803 ret = -ENOMEM; 1804 goto cleanup; 1805 } 1806 1807 tx->head_cpu_ptr = cpu_ptr; 1808 tx->head_dma_ptr = dma_ptr; 1809 if (tx->head_dma_ptr & 0x3) { 1810 ret = -ENOMEM; 1811 goto cleanup; 1812 } 1813 1814 return 0; 1815 1816 cleanup: 1817 lan743x_tx_ring_cleanup(tx); 1818 return ret; 1819 } 1820 1821 static void lan743x_tx_close(struct lan743x_tx *tx) 1822 { 1823 struct lan743x_adapter *adapter = tx->adapter; 1824 1825 lan743x_csr_write(adapter, 1826 DMAC_CMD, 1827 DMAC_CMD_STOP_T_(tx->channel_number)); 1828 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number); 1829 1830 lan743x_csr_write(adapter, 1831 DMAC_INT_EN_CLR, 1832 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1833 lan743x_csr_write(adapter, INT_EN_CLR, 1834 INT_BIT_DMA_TX_(tx->channel_number)); 1835 napi_disable(&tx->napi); 1836 netif_napi_del(&tx->napi); 1837 1838 lan743x_csr_write(adapter, FCT_TX_CTL, 1839 FCT_TX_CTL_DIS_(tx->channel_number)); 1840 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1841 FCT_TX_CTL_EN_(tx->channel_number), 1842 0, 1000, 20000, 100); 1843 1844 lan743x_tx_release_all_descriptors(tx); 1845 1846 if (tx->overflow_skb) { 1847 dev_kfree_skb(tx->overflow_skb); 1848 tx->overflow_skb = NULL; 1849 } 1850 1851 lan743x_tx_ring_cleanup(tx); 1852 } 1853 1854 static int lan743x_tx_open(struct lan743x_tx *tx) 1855 { 1856 struct lan743x_adapter *adapter = NULL; 1857 u32 data = 0; 1858 int ret; 1859 1860 adapter = tx->adapter; 1861 ret = lan743x_tx_ring_init(tx); 1862 if (ret) 1863 return ret; 1864 1865 /* initialize fifo */ 1866 lan743x_csr_write(adapter, FCT_TX_CTL, 1867 FCT_TX_CTL_RESET_(tx->channel_number)); 1868 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 1869 FCT_TX_CTL_RESET_(tx->channel_number), 1870 0, 1000, 20000, 100); 1871 1872 /* enable fifo */ 1873 lan743x_csr_write(adapter, FCT_TX_CTL, 1874 FCT_TX_CTL_EN_(tx->channel_number)); 1875 1876 /* reset tx channel */ 1877 lan743x_csr_write(adapter, DMAC_CMD, 1878 DMAC_CMD_TX_SWR_(tx->channel_number)); 1879 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 1880 DMAC_CMD_TX_SWR_(tx->channel_number), 1881 0, 1000, 20000, 100); 1882 1883 /* Write TX_BASE_ADDR */ 1884 lan743x_csr_write(adapter, 1885 TX_BASE_ADDRH(tx->channel_number), 1886 DMA_ADDR_HIGH32(tx->ring_dma_ptr)); 1887 lan743x_csr_write(adapter, 1888 TX_BASE_ADDRL(tx->channel_number), 1889 DMA_ADDR_LOW32(tx->ring_dma_ptr)); 1890 1891 /* Write TX_CFG_B */ 1892 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number)); 1893 data &= ~TX_CFG_B_TX_RING_LEN_MASK_; 1894 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_); 1895 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1896 data |= TX_CFG_B_TDMABL_512_; 1897 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data); 1898 1899 /* Write TX_CFG_A */ 1900 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_; 1901 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 1902 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_; 1903 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10); 1904 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04); 1905 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07); 1906 } 1907 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data); 1908 1909 /* Write TX_HEAD_WRITEBACK_ADDR */ 1910 lan743x_csr_write(adapter, 1911 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number), 1912 DMA_ADDR_HIGH32(tx->head_dma_ptr)); 1913 lan743x_csr_write(adapter, 1914 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number), 1915 DMA_ADDR_LOW32(tx->head_dma_ptr)); 1916 1917 /* set last head */ 1918 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number)); 1919 1920 /* write TX_TAIL */ 1921 tx->last_tail = 0; 1922 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 1923 (u32)(tx->last_tail)); 1924 tx->vector_flags = lan743x_intr_get_vector_flags(adapter, 1925 INT_BIT_DMA_TX_ 1926 (tx->channel_number)); 1927 netif_tx_napi_add(adapter->netdev, 1928 &tx->napi, lan743x_tx_napi_poll, 1929 tx->ring_size - 1); 1930 napi_enable(&tx->napi); 1931 1932 data = 0; 1933 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 1934 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_; 1935 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 1936 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_; 1937 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 1938 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_; 1939 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 1940 data |= TX_CFG_C_TX_INT_EN_R2C_; 1941 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data); 1942 1943 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)) 1944 lan743x_csr_write(adapter, INT_EN_SET, 1945 INT_BIT_DMA_TX_(tx->channel_number)); 1946 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 1947 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 1948 1949 /* start dmac channel */ 1950 lan743x_csr_write(adapter, DMAC_CMD, 1951 DMAC_CMD_START_T_(tx->channel_number)); 1952 return 0; 1953 } 1954 1955 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index) 1956 { 1957 return ((++index) % rx->ring_size); 1958 } 1959 1960 static struct sk_buff *lan743x_rx_allocate_skb(struct lan743x_rx *rx) 1961 { 1962 int length = 0; 1963 1964 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1965 return __netdev_alloc_skb(rx->adapter->netdev, 1966 length, GFP_ATOMIC | GFP_DMA); 1967 } 1968 1969 static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index, 1970 struct sk_buff *skb) 1971 { 1972 struct lan743x_rx_buffer_info *buffer_info; 1973 struct lan743x_rx_descriptor *descriptor; 1974 int length = 0; 1975 1976 length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING); 1977 descriptor = &rx->ring_cpu_ptr[index]; 1978 buffer_info = &rx->buffer_info[index]; 1979 buffer_info->skb = skb; 1980 if (!(buffer_info->skb)) 1981 return -ENOMEM; 1982 buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev, 1983 buffer_info->skb->data, 1984 length, 1985 DMA_FROM_DEVICE); 1986 if (dma_mapping_error(&rx->adapter->pdev->dev, 1987 buffer_info->dma_ptr)) { 1988 buffer_info->dma_ptr = 0; 1989 return -ENOMEM; 1990 } 1991 1992 buffer_info->buffer_length = length; 1993 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 1994 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 1995 descriptor->data3 = 0; 1996 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 1997 (length & RX_DESC_DATA0_BUF_LENGTH_MASK_)); 1998 skb_reserve(buffer_info->skb, RX_HEAD_PADDING); 1999 2000 return 0; 2001 } 2002 2003 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index) 2004 { 2005 struct lan743x_rx_buffer_info *buffer_info; 2006 struct lan743x_rx_descriptor *descriptor; 2007 2008 descriptor = &rx->ring_cpu_ptr[index]; 2009 buffer_info = &rx->buffer_info[index]; 2010 2011 descriptor->data1 = DMA_ADDR_LOW32(buffer_info->dma_ptr); 2012 descriptor->data2 = DMA_ADDR_HIGH32(buffer_info->dma_ptr); 2013 descriptor->data3 = 0; 2014 descriptor->data0 = (RX_DESC_DATA0_OWN_ | 2015 ((buffer_info->buffer_length) & 2016 RX_DESC_DATA0_BUF_LENGTH_MASK_)); 2017 } 2018 2019 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index) 2020 { 2021 struct lan743x_rx_buffer_info *buffer_info; 2022 struct lan743x_rx_descriptor *descriptor; 2023 2024 descriptor = &rx->ring_cpu_ptr[index]; 2025 buffer_info = &rx->buffer_info[index]; 2026 2027 memset(descriptor, 0, sizeof(*descriptor)); 2028 2029 if (buffer_info->dma_ptr) { 2030 dma_unmap_single(&rx->adapter->pdev->dev, 2031 buffer_info->dma_ptr, 2032 buffer_info->buffer_length, 2033 DMA_FROM_DEVICE); 2034 buffer_info->dma_ptr = 0; 2035 } 2036 2037 if (buffer_info->skb) { 2038 dev_kfree_skb(buffer_info->skb); 2039 buffer_info->skb = NULL; 2040 } 2041 2042 memset(buffer_info, 0, sizeof(*buffer_info)); 2043 } 2044 2045 static int lan743x_rx_process_packet(struct lan743x_rx *rx) 2046 { 2047 struct skb_shared_hwtstamps *hwtstamps = NULL; 2048 int result = RX_PROCESS_RESULT_NOTHING_TO_DO; 2049 struct lan743x_rx_buffer_info *buffer_info; 2050 struct lan743x_rx_descriptor *descriptor; 2051 int current_head_index = -1; 2052 int extension_index = -1; 2053 int first_index = -1; 2054 int last_index = -1; 2055 2056 current_head_index = *rx->head_cpu_ptr; 2057 if (current_head_index < 0 || current_head_index >= rx->ring_size) 2058 goto done; 2059 2060 if (rx->last_head < 0 || rx->last_head >= rx->ring_size) 2061 goto done; 2062 2063 if (rx->last_head != current_head_index) { 2064 descriptor = &rx->ring_cpu_ptr[rx->last_head]; 2065 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2066 goto done; 2067 2068 if (!(descriptor->data0 & RX_DESC_DATA0_FS_)) 2069 goto done; 2070 2071 first_index = rx->last_head; 2072 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2073 last_index = rx->last_head; 2074 } else { 2075 int index; 2076 2077 index = lan743x_rx_next_index(rx, first_index); 2078 while (index != current_head_index) { 2079 descriptor = &rx->ring_cpu_ptr[index]; 2080 if (descriptor->data0 & RX_DESC_DATA0_OWN_) 2081 goto done; 2082 2083 if (descriptor->data0 & RX_DESC_DATA0_LS_) { 2084 last_index = index; 2085 break; 2086 } 2087 index = lan743x_rx_next_index(rx, index); 2088 } 2089 } 2090 if (last_index >= 0) { 2091 descriptor = &rx->ring_cpu_ptr[last_index]; 2092 if (descriptor->data0 & RX_DESC_DATA0_EXT_) { 2093 /* extension is expected to follow */ 2094 int index = lan743x_rx_next_index(rx, 2095 last_index); 2096 if (index != current_head_index) { 2097 descriptor = &rx->ring_cpu_ptr[index]; 2098 if (descriptor->data0 & 2099 RX_DESC_DATA0_OWN_) { 2100 goto done; 2101 } 2102 if (descriptor->data0 & 2103 RX_DESC_DATA0_EXT_) { 2104 extension_index = index; 2105 } else { 2106 goto done; 2107 } 2108 } else { 2109 /* extension is not yet available */ 2110 /* prevent processing of this packet */ 2111 first_index = -1; 2112 last_index = -1; 2113 } 2114 } 2115 } 2116 } 2117 if (first_index >= 0 && last_index >= 0) { 2118 int real_last_index = last_index; 2119 struct sk_buff *skb = NULL; 2120 u32 ts_sec = 0; 2121 u32 ts_nsec = 0; 2122 2123 /* packet is available */ 2124 if (first_index == last_index) { 2125 /* single buffer packet */ 2126 struct sk_buff *new_skb = NULL; 2127 int packet_length; 2128 2129 new_skb = lan743x_rx_allocate_skb(rx); 2130 if (!new_skb) { 2131 /* failed to allocate next skb. 2132 * Memory is very low. 2133 * Drop this packet and reuse buffer. 2134 */ 2135 lan743x_rx_reuse_ring_element(rx, first_index); 2136 goto process_extension; 2137 } 2138 2139 buffer_info = &rx->buffer_info[first_index]; 2140 skb = buffer_info->skb; 2141 descriptor = &rx->ring_cpu_ptr[first_index]; 2142 2143 /* unmap from dma */ 2144 if (buffer_info->dma_ptr) { 2145 dma_unmap_single(&rx->adapter->pdev->dev, 2146 buffer_info->dma_ptr, 2147 buffer_info->buffer_length, 2148 DMA_FROM_DEVICE); 2149 buffer_info->dma_ptr = 0; 2150 buffer_info->buffer_length = 0; 2151 } 2152 buffer_info->skb = NULL; 2153 packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_ 2154 (descriptor->data0); 2155 skb_put(skb, packet_length - 4); 2156 skb->protocol = eth_type_trans(skb, 2157 rx->adapter->netdev); 2158 lan743x_rx_init_ring_element(rx, first_index, new_skb); 2159 } else { 2160 int index = first_index; 2161 2162 /* multi buffer packet not supported */ 2163 /* this should not happen since 2164 * buffers are allocated to be at least jumbo size 2165 */ 2166 2167 /* clean up buffers */ 2168 if (first_index <= last_index) { 2169 while ((index >= first_index) && 2170 (index <= last_index)) { 2171 lan743x_rx_reuse_ring_element(rx, 2172 index); 2173 index = lan743x_rx_next_index(rx, 2174 index); 2175 } 2176 } else { 2177 while ((index >= first_index) || 2178 (index <= last_index)) { 2179 lan743x_rx_reuse_ring_element(rx, 2180 index); 2181 index = lan743x_rx_next_index(rx, 2182 index); 2183 } 2184 } 2185 } 2186 2187 process_extension: 2188 if (extension_index >= 0) { 2189 descriptor = &rx->ring_cpu_ptr[extension_index]; 2190 buffer_info = &rx->buffer_info[extension_index]; 2191 2192 ts_sec = descriptor->data1; 2193 ts_nsec = (descriptor->data2 & 2194 RX_DESC_DATA2_TS_NS_MASK_); 2195 lan743x_rx_reuse_ring_element(rx, extension_index); 2196 real_last_index = extension_index; 2197 } 2198 2199 if (!skb) { 2200 result = RX_PROCESS_RESULT_PACKET_DROPPED; 2201 goto move_forward; 2202 } 2203 2204 if (extension_index < 0) 2205 goto pass_packet_to_os; 2206 hwtstamps = skb_hwtstamps(skb); 2207 if (hwtstamps) 2208 hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec); 2209 2210 pass_packet_to_os: 2211 /* pass packet to OS */ 2212 napi_gro_receive(&rx->napi, skb); 2213 result = RX_PROCESS_RESULT_PACKET_RECEIVED; 2214 2215 move_forward: 2216 /* push tail and head forward */ 2217 rx->last_tail = real_last_index; 2218 rx->last_head = lan743x_rx_next_index(rx, real_last_index); 2219 } 2220 done: 2221 return result; 2222 } 2223 2224 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight) 2225 { 2226 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi); 2227 struct lan743x_adapter *adapter = rx->adapter; 2228 u32 rx_tail_flags = 0; 2229 int count; 2230 2231 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) { 2232 /* clear int status bit before reading packet */ 2233 lan743x_csr_write(adapter, DMAC_INT_STS, 2234 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2235 } 2236 count = 0; 2237 while (count < weight) { 2238 int rx_process_result = lan743x_rx_process_packet(rx); 2239 2240 if (rx_process_result == RX_PROCESS_RESULT_PACKET_RECEIVED) { 2241 count++; 2242 } else if (rx_process_result == 2243 RX_PROCESS_RESULT_NOTHING_TO_DO) { 2244 break; 2245 } else if (rx_process_result == 2246 RX_PROCESS_RESULT_PACKET_DROPPED) { 2247 continue; 2248 } 2249 } 2250 rx->frame_count += count; 2251 if (count == weight) 2252 goto done; 2253 2254 if (!napi_complete_done(napi, count)) 2255 goto done; 2256 2257 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 2258 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_; 2259 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) { 2260 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_; 2261 } else { 2262 lan743x_csr_write(adapter, INT_EN_SET, 2263 INT_BIT_DMA_RX_(rx->channel_number)); 2264 } 2265 2266 /* update RX_TAIL */ 2267 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2268 rx_tail_flags | rx->last_tail); 2269 done: 2270 return count; 2271 } 2272 2273 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx) 2274 { 2275 if (rx->buffer_info && rx->ring_cpu_ptr) { 2276 int index; 2277 2278 for (index = 0; index < rx->ring_size; index++) 2279 lan743x_rx_release_ring_element(rx, index); 2280 } 2281 2282 if (rx->head_cpu_ptr) { 2283 dma_free_coherent(&rx->adapter->pdev->dev, 2284 sizeof(*rx->head_cpu_ptr), rx->head_cpu_ptr, 2285 rx->head_dma_ptr); 2286 rx->head_cpu_ptr = NULL; 2287 rx->head_dma_ptr = 0; 2288 } 2289 2290 kfree(rx->buffer_info); 2291 rx->buffer_info = NULL; 2292 2293 if (rx->ring_cpu_ptr) { 2294 dma_free_coherent(&rx->adapter->pdev->dev, 2295 rx->ring_allocation_size, rx->ring_cpu_ptr, 2296 rx->ring_dma_ptr); 2297 rx->ring_allocation_size = 0; 2298 rx->ring_cpu_ptr = NULL; 2299 rx->ring_dma_ptr = 0; 2300 } 2301 2302 rx->ring_size = 0; 2303 rx->last_head = 0; 2304 } 2305 2306 static int lan743x_rx_ring_init(struct lan743x_rx *rx) 2307 { 2308 size_t ring_allocation_size = 0; 2309 dma_addr_t dma_ptr = 0; 2310 void *cpu_ptr = NULL; 2311 int ret = -ENOMEM; 2312 int index = 0; 2313 2314 rx->ring_size = LAN743X_RX_RING_SIZE; 2315 if (rx->ring_size <= 1) { 2316 ret = -EINVAL; 2317 goto cleanup; 2318 } 2319 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) { 2320 ret = -EINVAL; 2321 goto cleanup; 2322 } 2323 ring_allocation_size = ALIGN(rx->ring_size * 2324 sizeof(struct lan743x_rx_descriptor), 2325 PAGE_SIZE); 2326 dma_ptr = 0; 2327 cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev, 2328 ring_allocation_size, &dma_ptr, GFP_KERNEL); 2329 if (!cpu_ptr) { 2330 ret = -ENOMEM; 2331 goto cleanup; 2332 } 2333 rx->ring_allocation_size = ring_allocation_size; 2334 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr; 2335 rx->ring_dma_ptr = dma_ptr; 2336 2337 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info), 2338 GFP_KERNEL); 2339 if (!cpu_ptr) { 2340 ret = -ENOMEM; 2341 goto cleanup; 2342 } 2343 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr; 2344 dma_ptr = 0; 2345 cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev, 2346 sizeof(*rx->head_cpu_ptr), &dma_ptr, 2347 GFP_KERNEL); 2348 if (!cpu_ptr) { 2349 ret = -ENOMEM; 2350 goto cleanup; 2351 } 2352 2353 rx->head_cpu_ptr = cpu_ptr; 2354 rx->head_dma_ptr = dma_ptr; 2355 if (rx->head_dma_ptr & 0x3) { 2356 ret = -ENOMEM; 2357 goto cleanup; 2358 } 2359 2360 rx->last_head = 0; 2361 for (index = 0; index < rx->ring_size; index++) { 2362 struct sk_buff *new_skb = lan743x_rx_allocate_skb(rx); 2363 2364 ret = lan743x_rx_init_ring_element(rx, index, new_skb); 2365 if (ret) 2366 goto cleanup; 2367 } 2368 return 0; 2369 2370 cleanup: 2371 lan743x_rx_ring_cleanup(rx); 2372 return ret; 2373 } 2374 2375 static void lan743x_rx_close(struct lan743x_rx *rx) 2376 { 2377 struct lan743x_adapter *adapter = rx->adapter; 2378 2379 lan743x_csr_write(adapter, FCT_RX_CTL, 2380 FCT_RX_CTL_DIS_(rx->channel_number)); 2381 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2382 FCT_RX_CTL_EN_(rx->channel_number), 2383 0, 1000, 20000, 100); 2384 2385 lan743x_csr_write(adapter, DMAC_CMD, 2386 DMAC_CMD_STOP_R_(rx->channel_number)); 2387 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number); 2388 2389 lan743x_csr_write(adapter, DMAC_INT_EN_CLR, 2390 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2391 lan743x_csr_write(adapter, INT_EN_CLR, 2392 INT_BIT_DMA_RX_(rx->channel_number)); 2393 napi_disable(&rx->napi); 2394 2395 netif_napi_del(&rx->napi); 2396 2397 lan743x_rx_ring_cleanup(rx); 2398 } 2399 2400 static int lan743x_rx_open(struct lan743x_rx *rx) 2401 { 2402 struct lan743x_adapter *adapter = rx->adapter; 2403 u32 data = 0; 2404 int ret; 2405 2406 rx->frame_count = 0; 2407 ret = lan743x_rx_ring_init(rx); 2408 if (ret) 2409 goto return_error; 2410 2411 netif_napi_add(adapter->netdev, 2412 &rx->napi, lan743x_rx_napi_poll, 2413 rx->ring_size - 1); 2414 2415 lan743x_csr_write(adapter, DMAC_CMD, 2416 DMAC_CMD_RX_SWR_(rx->channel_number)); 2417 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 2418 DMAC_CMD_RX_SWR_(rx->channel_number), 2419 0, 1000, 20000, 100); 2420 2421 /* set ring base address */ 2422 lan743x_csr_write(adapter, 2423 RX_BASE_ADDRH(rx->channel_number), 2424 DMA_ADDR_HIGH32(rx->ring_dma_ptr)); 2425 lan743x_csr_write(adapter, 2426 RX_BASE_ADDRL(rx->channel_number), 2427 DMA_ADDR_LOW32(rx->ring_dma_ptr)); 2428 2429 /* set rx write back address */ 2430 lan743x_csr_write(adapter, 2431 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number), 2432 DMA_ADDR_HIGH32(rx->head_dma_ptr)); 2433 lan743x_csr_write(adapter, 2434 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number), 2435 DMA_ADDR_LOW32(rx->head_dma_ptr)); 2436 data = RX_CFG_A_RX_HP_WB_EN_; 2437 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 2438 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ | 2439 RX_CFG_A_RX_WB_THRES_SET_(0x7) | 2440 RX_CFG_A_RX_PF_THRES_SET_(16) | 2441 RX_CFG_A_RX_PF_PRI_THRES_SET_(4)); 2442 } 2443 2444 /* set RX_CFG_A */ 2445 lan743x_csr_write(adapter, 2446 RX_CFG_A(rx->channel_number), data); 2447 2448 /* set RX_CFG_B */ 2449 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number)); 2450 data &= ~RX_CFG_B_RX_PAD_MASK_; 2451 if (!RX_HEAD_PADDING) 2452 data |= RX_CFG_B_RX_PAD_0_; 2453 else 2454 data |= RX_CFG_B_RX_PAD_2_; 2455 data &= ~RX_CFG_B_RX_RING_LEN_MASK_; 2456 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_); 2457 data |= RX_CFG_B_TS_ALL_RX_; 2458 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 2459 data |= RX_CFG_B_RDMABL_512_; 2460 2461 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data); 2462 rx->vector_flags = lan743x_intr_get_vector_flags(adapter, 2463 INT_BIT_DMA_RX_ 2464 (rx->channel_number)); 2465 2466 /* set RX_CFG_C */ 2467 data = 0; 2468 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 2469 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_; 2470 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 2471 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_; 2472 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 2473 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_; 2474 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 2475 data |= RX_CFG_C_RX_INT_EN_R2C_; 2476 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data); 2477 2478 rx->last_tail = ((u32)(rx->ring_size - 1)); 2479 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2480 rx->last_tail); 2481 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number)); 2482 if (rx->last_head) { 2483 ret = -EIO; 2484 goto napi_delete; 2485 } 2486 2487 napi_enable(&rx->napi); 2488 2489 lan743x_csr_write(adapter, INT_EN_SET, 2490 INT_BIT_DMA_RX_(rx->channel_number)); 2491 lan743x_csr_write(adapter, DMAC_INT_STS, 2492 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2493 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 2494 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2495 lan743x_csr_write(adapter, DMAC_CMD, 2496 DMAC_CMD_START_R_(rx->channel_number)); 2497 2498 /* initialize fifo */ 2499 lan743x_csr_write(adapter, FCT_RX_CTL, 2500 FCT_RX_CTL_RESET_(rx->channel_number)); 2501 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2502 FCT_RX_CTL_RESET_(rx->channel_number), 2503 0, 1000, 20000, 100); 2504 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number), 2505 FCT_FLOW_CTL_REQ_EN_ | 2506 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) | 2507 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA)); 2508 2509 /* enable fifo */ 2510 lan743x_csr_write(adapter, FCT_RX_CTL, 2511 FCT_RX_CTL_EN_(rx->channel_number)); 2512 return 0; 2513 2514 napi_delete: 2515 netif_napi_del(&rx->napi); 2516 lan743x_rx_ring_cleanup(rx); 2517 2518 return_error: 2519 return ret; 2520 } 2521 2522 static int lan743x_netdev_close(struct net_device *netdev) 2523 { 2524 struct lan743x_adapter *adapter = netdev_priv(netdev); 2525 int index; 2526 2527 lan743x_tx_close(&adapter->tx[0]); 2528 2529 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) 2530 lan743x_rx_close(&adapter->rx[index]); 2531 2532 lan743x_ptp_close(adapter); 2533 2534 lan743x_phy_close(adapter); 2535 2536 lan743x_mac_close(adapter); 2537 2538 lan743x_intr_close(adapter); 2539 2540 return 0; 2541 } 2542 2543 static int lan743x_netdev_open(struct net_device *netdev) 2544 { 2545 struct lan743x_adapter *adapter = netdev_priv(netdev); 2546 int index; 2547 int ret; 2548 2549 ret = lan743x_intr_open(adapter); 2550 if (ret) 2551 goto return_error; 2552 2553 ret = lan743x_mac_open(adapter); 2554 if (ret) 2555 goto close_intr; 2556 2557 ret = lan743x_phy_open(adapter); 2558 if (ret) 2559 goto close_mac; 2560 2561 ret = lan743x_ptp_open(adapter); 2562 if (ret) 2563 goto close_phy; 2564 2565 lan743x_rfe_open(adapter); 2566 2567 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2568 ret = lan743x_rx_open(&adapter->rx[index]); 2569 if (ret) 2570 goto close_rx; 2571 } 2572 2573 ret = lan743x_tx_open(&adapter->tx[0]); 2574 if (ret) 2575 goto close_rx; 2576 2577 return 0; 2578 2579 close_rx: 2580 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2581 if (adapter->rx[index].ring_cpu_ptr) 2582 lan743x_rx_close(&adapter->rx[index]); 2583 } 2584 lan743x_ptp_close(adapter); 2585 2586 close_phy: 2587 lan743x_phy_close(adapter); 2588 2589 close_mac: 2590 lan743x_mac_close(adapter); 2591 2592 close_intr: 2593 lan743x_intr_close(adapter); 2594 2595 return_error: 2596 netif_warn(adapter, ifup, adapter->netdev, 2597 "Error opening LAN743x\n"); 2598 return ret; 2599 } 2600 2601 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb, 2602 struct net_device *netdev) 2603 { 2604 struct lan743x_adapter *adapter = netdev_priv(netdev); 2605 2606 return lan743x_tx_xmit_frame(&adapter->tx[0], skb); 2607 } 2608 2609 static int lan743x_netdev_ioctl(struct net_device *netdev, 2610 struct ifreq *ifr, int cmd) 2611 { 2612 if (!netif_running(netdev)) 2613 return -EINVAL; 2614 if (cmd == SIOCSHWTSTAMP) 2615 return lan743x_ptp_ioctl(netdev, ifr, cmd); 2616 return phy_mii_ioctl(netdev->phydev, ifr, cmd); 2617 } 2618 2619 static void lan743x_netdev_set_multicast(struct net_device *netdev) 2620 { 2621 struct lan743x_adapter *adapter = netdev_priv(netdev); 2622 2623 lan743x_rfe_set_multicast(adapter); 2624 } 2625 2626 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu) 2627 { 2628 struct lan743x_adapter *adapter = netdev_priv(netdev); 2629 int ret = 0; 2630 2631 ret = lan743x_mac_set_mtu(adapter, new_mtu); 2632 if (!ret) 2633 netdev->mtu = new_mtu; 2634 return ret; 2635 } 2636 2637 static void lan743x_netdev_get_stats64(struct net_device *netdev, 2638 struct rtnl_link_stats64 *stats) 2639 { 2640 struct lan743x_adapter *adapter = netdev_priv(netdev); 2641 2642 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES); 2643 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES); 2644 stats->rx_bytes = lan743x_csr_read(adapter, 2645 STAT_RX_UNICAST_BYTE_COUNT) + 2646 lan743x_csr_read(adapter, 2647 STAT_RX_BROADCAST_BYTE_COUNT) + 2648 lan743x_csr_read(adapter, 2649 STAT_RX_MULTICAST_BYTE_COUNT); 2650 stats->tx_bytes = lan743x_csr_read(adapter, 2651 STAT_TX_UNICAST_BYTE_COUNT) + 2652 lan743x_csr_read(adapter, 2653 STAT_TX_BROADCAST_BYTE_COUNT) + 2654 lan743x_csr_read(adapter, 2655 STAT_TX_MULTICAST_BYTE_COUNT); 2656 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) + 2657 lan743x_csr_read(adapter, 2658 STAT_RX_ALIGNMENT_ERRORS) + 2659 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) + 2660 lan743x_csr_read(adapter, 2661 STAT_RX_UNDERSIZE_FRAME_ERRORS) + 2662 lan743x_csr_read(adapter, 2663 STAT_RX_OVERSIZE_FRAME_ERRORS); 2664 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) + 2665 lan743x_csr_read(adapter, 2666 STAT_TX_EXCESS_DEFERRAL_ERRORS) + 2667 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS); 2668 stats->rx_dropped = lan743x_csr_read(adapter, 2669 STAT_RX_DROPPED_FRAMES); 2670 stats->tx_dropped = lan743x_csr_read(adapter, 2671 STAT_TX_EXCESSIVE_COLLISION); 2672 stats->multicast = lan743x_csr_read(adapter, 2673 STAT_RX_MULTICAST_FRAMES) + 2674 lan743x_csr_read(adapter, 2675 STAT_TX_MULTICAST_FRAMES); 2676 stats->collisions = lan743x_csr_read(adapter, 2677 STAT_TX_SINGLE_COLLISIONS) + 2678 lan743x_csr_read(adapter, 2679 STAT_TX_MULTIPLE_COLLISIONS) + 2680 lan743x_csr_read(adapter, 2681 STAT_TX_LATE_COLLISIONS); 2682 } 2683 2684 static int lan743x_netdev_set_mac_address(struct net_device *netdev, 2685 void *addr) 2686 { 2687 struct lan743x_adapter *adapter = netdev_priv(netdev); 2688 struct sockaddr *sock_addr = addr; 2689 int ret; 2690 2691 ret = eth_prepare_mac_addr_change(netdev, sock_addr); 2692 if (ret) 2693 return ret; 2694 ether_addr_copy(netdev->dev_addr, sock_addr->sa_data); 2695 lan743x_mac_set_address(adapter, sock_addr->sa_data); 2696 lan743x_rfe_update_mac_address(adapter); 2697 return 0; 2698 } 2699 2700 static const struct net_device_ops lan743x_netdev_ops = { 2701 .ndo_open = lan743x_netdev_open, 2702 .ndo_stop = lan743x_netdev_close, 2703 .ndo_start_xmit = lan743x_netdev_xmit_frame, 2704 .ndo_do_ioctl = lan743x_netdev_ioctl, 2705 .ndo_set_rx_mode = lan743x_netdev_set_multicast, 2706 .ndo_change_mtu = lan743x_netdev_change_mtu, 2707 .ndo_get_stats64 = lan743x_netdev_get_stats64, 2708 .ndo_set_mac_address = lan743x_netdev_set_mac_address, 2709 }; 2710 2711 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter) 2712 { 2713 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2714 } 2715 2716 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter) 2717 { 2718 mdiobus_unregister(adapter->mdiobus); 2719 } 2720 2721 static void lan743x_full_cleanup(struct lan743x_adapter *adapter) 2722 { 2723 unregister_netdev(adapter->netdev); 2724 2725 lan743x_mdiobus_cleanup(adapter); 2726 lan743x_hardware_cleanup(adapter); 2727 lan743x_pci_cleanup(adapter); 2728 } 2729 2730 static int lan743x_hardware_init(struct lan743x_adapter *adapter, 2731 struct pci_dev *pdev) 2732 { 2733 struct lan743x_tx *tx; 2734 int index; 2735 int ret; 2736 2737 adapter->intr.irq = adapter->pdev->irq; 2738 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 2739 mutex_init(&adapter->dp_lock); 2740 2741 ret = lan743x_gpio_init(adapter); 2742 if (ret) 2743 return ret; 2744 2745 ret = lan743x_mac_init(adapter); 2746 if (ret) 2747 return ret; 2748 2749 ret = lan743x_phy_init(adapter); 2750 if (ret) 2751 return ret; 2752 2753 ret = lan743x_ptp_init(adapter); 2754 if (ret) 2755 return ret; 2756 2757 lan743x_rfe_update_mac_address(adapter); 2758 2759 ret = lan743x_dmac_init(adapter); 2760 if (ret) 2761 return ret; 2762 2763 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 2764 adapter->rx[index].adapter = adapter; 2765 adapter->rx[index].channel_number = index; 2766 } 2767 2768 tx = &adapter->tx[0]; 2769 tx->adapter = adapter; 2770 tx->channel_number = 0; 2771 spin_lock_init(&tx->ring_lock); 2772 return 0; 2773 } 2774 2775 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter) 2776 { 2777 int ret; 2778 2779 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev); 2780 if (!(adapter->mdiobus)) { 2781 ret = -ENOMEM; 2782 goto return_error; 2783 } 2784 2785 adapter->mdiobus->priv = (void *)adapter; 2786 adapter->mdiobus->read = lan743x_mdiobus_read; 2787 adapter->mdiobus->write = lan743x_mdiobus_write; 2788 adapter->mdiobus->name = "lan743x-mdiobus"; 2789 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE, 2790 "pci-%s", pci_name(adapter->pdev)); 2791 2792 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_) 2793 /* LAN7430 uses internal phy at address 1 */ 2794 adapter->mdiobus->phy_mask = ~(u32)BIT(1); 2795 2796 /* register mdiobus */ 2797 ret = mdiobus_register(adapter->mdiobus); 2798 if (ret < 0) 2799 goto return_error; 2800 return 0; 2801 2802 return_error: 2803 return ret; 2804 } 2805 2806 /* lan743x_pcidev_probe - Device Initialization Routine 2807 * @pdev: PCI device information struct 2808 * @id: entry in lan743x_pci_tbl 2809 * 2810 * Returns 0 on success, negative on failure 2811 * 2812 * initializes an adapter identified by a pci_dev structure. 2813 * The OS initialization, configuring of the adapter private structure, 2814 * and a hardware reset occur. 2815 **/ 2816 static int lan743x_pcidev_probe(struct pci_dev *pdev, 2817 const struct pci_device_id *id) 2818 { 2819 struct lan743x_adapter *adapter = NULL; 2820 struct net_device *netdev = NULL; 2821 const void *mac_addr; 2822 int ret = -ENODEV; 2823 2824 netdev = devm_alloc_etherdev(&pdev->dev, 2825 sizeof(struct lan743x_adapter)); 2826 if (!netdev) 2827 goto return_error; 2828 2829 SET_NETDEV_DEV(netdev, &pdev->dev); 2830 pci_set_drvdata(pdev, netdev); 2831 adapter = netdev_priv(netdev); 2832 adapter->netdev = netdev; 2833 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE | 2834 NETIF_MSG_LINK | NETIF_MSG_IFUP | 2835 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED; 2836 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE; 2837 2838 mac_addr = of_get_mac_address(pdev->dev.of_node); 2839 if (!IS_ERR(mac_addr)) 2840 ether_addr_copy(adapter->mac_address, mac_addr); 2841 2842 ret = lan743x_pci_init(adapter, pdev); 2843 if (ret) 2844 goto return_error; 2845 2846 ret = lan743x_csr_init(adapter); 2847 if (ret) 2848 goto cleanup_pci; 2849 2850 ret = lan743x_hardware_init(adapter, pdev); 2851 if (ret) 2852 goto cleanup_pci; 2853 2854 ret = lan743x_mdiobus_init(adapter); 2855 if (ret) 2856 goto cleanup_hardware; 2857 2858 adapter->netdev->netdev_ops = &lan743x_netdev_ops; 2859 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops; 2860 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM; 2861 adapter->netdev->hw_features = adapter->netdev->features; 2862 2863 /* carrier off reporting is important to ethtool even BEFORE open */ 2864 netif_carrier_off(netdev); 2865 2866 ret = register_netdev(adapter->netdev); 2867 if (ret < 0) 2868 goto cleanup_mdiobus; 2869 return 0; 2870 2871 cleanup_mdiobus: 2872 lan743x_mdiobus_cleanup(adapter); 2873 2874 cleanup_hardware: 2875 lan743x_hardware_cleanup(adapter); 2876 2877 cleanup_pci: 2878 lan743x_pci_cleanup(adapter); 2879 2880 return_error: 2881 pr_warn("Initialization failed\n"); 2882 return ret; 2883 } 2884 2885 /** 2886 * lan743x_pcidev_remove - Device Removal Routine 2887 * @pdev: PCI device information struct 2888 * 2889 * this is called by the PCI subsystem to alert the driver 2890 * that it should release a PCI device. This could be caused by a 2891 * Hot-Plug event, or because the driver is going to be removed from 2892 * memory. 2893 **/ 2894 static void lan743x_pcidev_remove(struct pci_dev *pdev) 2895 { 2896 struct net_device *netdev = pci_get_drvdata(pdev); 2897 struct lan743x_adapter *adapter = netdev_priv(netdev); 2898 2899 lan743x_full_cleanup(adapter); 2900 } 2901 2902 static void lan743x_pcidev_shutdown(struct pci_dev *pdev) 2903 { 2904 struct net_device *netdev = pci_get_drvdata(pdev); 2905 struct lan743x_adapter *adapter = netdev_priv(netdev); 2906 2907 rtnl_lock(); 2908 netif_device_detach(netdev); 2909 2910 /* close netdev when netdev is at running state. 2911 * For instance, it is true when system goes to sleep by pm-suspend 2912 * However, it is false when system goes to sleep by suspend GUI menu 2913 */ 2914 if (netif_running(netdev)) 2915 lan743x_netdev_close(netdev); 2916 rtnl_unlock(); 2917 2918 #ifdef CONFIG_PM 2919 pci_save_state(pdev); 2920 #endif 2921 2922 /* clean up lan743x portion */ 2923 lan743x_hardware_cleanup(adapter); 2924 } 2925 2926 #ifdef CONFIG_PM_SLEEP 2927 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len) 2928 { 2929 return bitrev16(crc16(0xFFFF, buf, len)); 2930 } 2931 2932 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) 2933 { 2934 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; 2935 const u8 ipv6_multicast[3] = { 0x33, 0x33 }; 2936 const u8 arp_type[2] = { 0x08, 0x06 }; 2937 int mask_index; 2938 u32 pmtctl; 2939 u32 wucsr; 2940 u32 macrx; 2941 u16 crc; 2942 2943 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++) 2944 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0); 2945 2946 /* clear wake settings */ 2947 pmtctl = lan743x_csr_read(adapter, PMT_CTL); 2948 pmtctl |= PMT_CTL_WUPS_MASK_; 2949 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | 2950 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | 2951 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); 2952 2953 macrx = lan743x_csr_read(adapter, MAC_RX); 2954 2955 wucsr = 0; 2956 mask_index = 0; 2957 2958 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_; 2959 2960 if (adapter->wolopts & WAKE_PHY) { 2961 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_; 2962 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_; 2963 } 2964 if (adapter->wolopts & WAKE_MAGIC) { 2965 wucsr |= MAC_WUCSR_MPEN_; 2966 macrx |= MAC_RX_RXEN_; 2967 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2968 } 2969 if (adapter->wolopts & WAKE_UCAST) { 2970 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_; 2971 macrx |= MAC_RX_RXEN_; 2972 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2973 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2974 } 2975 if (adapter->wolopts & WAKE_BCAST) { 2976 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_; 2977 macrx |= MAC_RX_RXEN_; 2978 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 2979 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 2980 } 2981 if (adapter->wolopts & WAKE_MCAST) { 2982 /* IPv4 multicast */ 2983 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3); 2984 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2985 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2986 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2987 (crc & MAC_WUF_CFG_CRC16_MASK_)); 2988 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7); 2989 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 2990 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 2991 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 2992 mask_index++; 2993 2994 /* IPv6 multicast */ 2995 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2); 2996 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 2997 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 2998 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 2999 (crc & MAC_WUF_CFG_CRC16_MASK_)); 3000 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3); 3001 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 3002 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 3003 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 3004 mask_index++; 3005 3006 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 3007 macrx |= MAC_RX_RXEN_; 3008 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 3009 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 3010 } 3011 if (adapter->wolopts & WAKE_ARP) { 3012 /* set MAC_WUF_CFG & WUF_MASK 3013 * for packettype (offset 12,13) = ARP (0x0806) 3014 */ 3015 crc = lan743x_pm_wakeframe_crc16(arp_type, 2); 3016 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 3017 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ | 3018 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 3019 (crc & MAC_WUF_CFG_CRC16_MASK_)); 3020 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000); 3021 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 3022 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 3023 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 3024 mask_index++; 3025 3026 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 3027 macrx |= MAC_RX_RXEN_; 3028 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 3029 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 3030 } 3031 3032 lan743x_csr_write(adapter, MAC_WUCSR, wucsr); 3033 lan743x_csr_write(adapter, PMT_CTL, pmtctl); 3034 lan743x_csr_write(adapter, MAC_RX, macrx); 3035 } 3036 3037 static int lan743x_pm_suspend(struct device *dev) 3038 { 3039 struct pci_dev *pdev = to_pci_dev(dev); 3040 struct net_device *netdev = pci_get_drvdata(pdev); 3041 struct lan743x_adapter *adapter = netdev_priv(netdev); 3042 int ret; 3043 3044 lan743x_pcidev_shutdown(pdev); 3045 3046 /* clear all wakes */ 3047 lan743x_csr_write(adapter, MAC_WUCSR, 0); 3048 lan743x_csr_write(adapter, MAC_WUCSR2, 0); 3049 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF); 3050 3051 if (adapter->wolopts) 3052 lan743x_pm_set_wol(adapter); 3053 3054 /* Host sets PME_En, put D3hot */ 3055 ret = pci_prepare_to_sleep(pdev); 3056 3057 return 0; 3058 } 3059 3060 static int lan743x_pm_resume(struct device *dev) 3061 { 3062 struct pci_dev *pdev = to_pci_dev(dev); 3063 struct net_device *netdev = pci_get_drvdata(pdev); 3064 struct lan743x_adapter *adapter = netdev_priv(netdev); 3065 int ret; 3066 3067 pci_set_power_state(pdev, PCI_D0); 3068 pci_restore_state(pdev); 3069 pci_save_state(pdev); 3070 3071 ret = lan743x_hardware_init(adapter, pdev); 3072 if (ret) { 3073 netif_err(adapter, probe, adapter->netdev, 3074 "lan743x_hardware_init returned %d\n", ret); 3075 } 3076 3077 /* open netdev when netdev is at running state while resume. 3078 * For instance, it is true when system wakesup after pm-suspend 3079 * However, it is false when system wakes up after suspend GUI menu 3080 */ 3081 if (netif_running(netdev)) 3082 lan743x_netdev_open(netdev); 3083 3084 netif_device_attach(netdev); 3085 3086 return 0; 3087 } 3088 3089 static const struct dev_pm_ops lan743x_pm_ops = { 3090 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume) 3091 }; 3092 #endif /* CONFIG_PM_SLEEP */ 3093 3094 static const struct pci_device_id lan743x_pcidev_tbl[] = { 3095 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) }, 3096 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) }, 3097 { 0, } 3098 }; 3099 3100 MODULE_DEVICE_TABLE(pci, lan743x_pcidev_tbl); 3101 3102 static struct pci_driver lan743x_pcidev_driver = { 3103 .name = DRIVER_NAME, 3104 .id_table = lan743x_pcidev_tbl, 3105 .probe = lan743x_pcidev_probe, 3106 .remove = lan743x_pcidev_remove, 3107 #ifdef CONFIG_PM_SLEEP 3108 .driver.pm = &lan743x_pm_ops, 3109 #endif 3110 .shutdown = lan743x_pcidev_shutdown, 3111 }; 3112 3113 module_pci_driver(lan743x_pcidev_driver); 3114 3115 MODULE_AUTHOR(DRIVER_AUTHOR); 3116 MODULE_DESCRIPTION(DRIVER_DESC); 3117 MODULE_LICENSE("GPL"); 3118