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