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 #define MMD_ACCESS_ADDRESS 0 22 #define MMD_ACCESS_WRITE 1 23 #define MMD_ACCESS_READ 2 24 #define MMD_ACCESS_READ_INC 3 25 #define PCS_POWER_STATE_DOWN 0x6 26 #define PCS_POWER_STATE_UP 0x4 27 28 static void pci11x1x_strap_get_status(struct lan743x_adapter *adapter) 29 { 30 u32 chip_rev; 31 u32 cfg_load; 32 u32 hw_cfg; 33 u32 strap; 34 int ret; 35 36 /* Timeout = 100 (i.e. 1 sec (10 msce * 100)) */ 37 ret = lan743x_hs_syslock_acquire(adapter, 100); 38 if (ret < 0) { 39 netif_err(adapter, drv, adapter->netdev, 40 "Sys Lock acquire failed ret:%d\n", ret); 41 return; 42 } 43 44 cfg_load = lan743x_csr_read(adapter, ETH_SYS_CONFIG_LOAD_STARTED_REG); 45 lan743x_hs_syslock_release(adapter); 46 hw_cfg = lan743x_csr_read(adapter, HW_CFG); 47 48 if (cfg_load & GEN_SYS_LOAD_STARTED_REG_ETH_ || 49 hw_cfg & HW_CFG_RST_PROTECT_) { 50 strap = lan743x_csr_read(adapter, STRAP_READ); 51 if (strap & STRAP_READ_SGMII_EN_) 52 adapter->is_sgmii_en = true; 53 else 54 adapter->is_sgmii_en = false; 55 } else { 56 chip_rev = lan743x_csr_read(adapter, FPGA_REV); 57 if (chip_rev) { 58 if (chip_rev & FPGA_SGMII_OP) 59 adapter->is_sgmii_en = true; 60 else 61 adapter->is_sgmii_en = false; 62 } else { 63 adapter->is_sgmii_en = false; 64 } 65 } 66 netif_dbg(adapter, drv, adapter->netdev, 67 "SGMII I/F %sable\n", adapter->is_sgmii_en ? "En" : "Dis"); 68 } 69 70 static bool is_pci11x1x_chip(struct lan743x_adapter *adapter) 71 { 72 struct lan743x_csr *csr = &adapter->csr; 73 u32 id_rev = csr->id_rev; 74 75 if (((id_rev & 0xFFFF0000) == ID_REV_ID_A011_) || 76 ((id_rev & 0xFFFF0000) == ID_REV_ID_A041_)) { 77 return true; 78 } 79 return false; 80 } 81 82 static void lan743x_pci_cleanup(struct lan743x_adapter *adapter) 83 { 84 pci_release_selected_regions(adapter->pdev, 85 pci_select_bars(adapter->pdev, 86 IORESOURCE_MEM)); 87 pci_disable_device(adapter->pdev); 88 } 89 90 static int lan743x_pci_init(struct lan743x_adapter *adapter, 91 struct pci_dev *pdev) 92 { 93 unsigned long bars = 0; 94 int ret; 95 96 adapter->pdev = pdev; 97 ret = pci_enable_device_mem(pdev); 98 if (ret) 99 goto return_error; 100 101 netif_info(adapter, probe, adapter->netdev, 102 "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n", 103 pdev->vendor, pdev->device); 104 bars = pci_select_bars(pdev, IORESOURCE_MEM); 105 if (!test_bit(0, &bars)) 106 goto disable_device; 107 108 ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME); 109 if (ret) 110 goto disable_device; 111 112 pci_set_master(pdev); 113 return 0; 114 115 disable_device: 116 pci_disable_device(adapter->pdev); 117 118 return_error: 119 return ret; 120 } 121 122 u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset) 123 { 124 return ioread32(&adapter->csr.csr_address[offset]); 125 } 126 127 void lan743x_csr_write(struct lan743x_adapter *adapter, int offset, 128 u32 data) 129 { 130 iowrite32(data, &adapter->csr.csr_address[offset]); 131 } 132 133 #define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset) 134 135 static int lan743x_csr_light_reset(struct lan743x_adapter *adapter) 136 { 137 u32 data; 138 139 data = lan743x_csr_read(adapter, HW_CFG); 140 data |= HW_CFG_LRST_; 141 lan743x_csr_write(adapter, HW_CFG, data); 142 143 return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data, 144 !(data & HW_CFG_LRST_), 100000, 10000000); 145 } 146 147 static int lan743x_csr_wait_for_bit_atomic(struct lan743x_adapter *adapter, 148 int offset, u32 bit_mask, 149 int target_value, int udelay_min, 150 int udelay_max, int count) 151 { 152 u32 data; 153 154 return readx_poll_timeout_atomic(LAN743X_CSR_READ_OP, offset, data, 155 target_value == !!(data & bit_mask), 156 udelay_max, udelay_min * count); 157 } 158 159 static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter, 160 int offset, u32 bit_mask, 161 int target_value, int usleep_min, 162 int usleep_max, int count) 163 { 164 u32 data; 165 166 return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data, 167 target_value == !!(data & bit_mask), 168 usleep_max, usleep_min * count); 169 } 170 171 static int lan743x_csr_init(struct lan743x_adapter *adapter) 172 { 173 struct lan743x_csr *csr = &adapter->csr; 174 resource_size_t bar_start, bar_length; 175 176 bar_start = pci_resource_start(adapter->pdev, 0); 177 bar_length = pci_resource_len(adapter->pdev, 0); 178 csr->csr_address = devm_ioremap(&adapter->pdev->dev, 179 bar_start, bar_length); 180 if (!csr->csr_address) 181 return -ENOMEM; 182 183 csr->id_rev = lan743x_csr_read(adapter, ID_REV); 184 csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV); 185 netif_info(adapter, probe, adapter->netdev, 186 "ID_REV = 0x%08X, FPGA_REV = %d.%d\n", 187 csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev), 188 FPGA_REV_GET_MINOR_(csr->fpga_rev)); 189 if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) 190 return -ENODEV; 191 192 csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR; 193 switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) { 194 case ID_REV_CHIP_REV_A0_: 195 csr->flags |= LAN743X_CSR_FLAG_IS_A0; 196 csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR; 197 break; 198 case ID_REV_CHIP_REV_B0_: 199 csr->flags |= LAN743X_CSR_FLAG_IS_B0; 200 break; 201 } 202 203 return lan743x_csr_light_reset(adapter); 204 } 205 206 static void lan743x_intr_software_isr(struct lan743x_adapter *adapter) 207 { 208 struct lan743x_intr *intr = &adapter->intr; 209 210 /* disable the interrupt to prevent repeated re-triggering */ 211 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_); 212 intr->software_isr_flag = true; 213 wake_up(&intr->software_isr_wq); 214 } 215 216 static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags) 217 { 218 struct lan743x_tx *tx = context; 219 struct lan743x_adapter *adapter = tx->adapter; 220 bool enable_flag = true; 221 222 lan743x_csr_read(adapter, INT_EN_SET); 223 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) { 224 lan743x_csr_write(adapter, INT_EN_CLR, 225 INT_BIT_DMA_TX_(tx->channel_number)); 226 } 227 228 if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) { 229 u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 230 u32 dmac_int_sts; 231 u32 dmac_int_en; 232 233 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) 234 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 235 else 236 dmac_int_sts = ioc_bit; 237 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) 238 dmac_int_en = lan743x_csr_read(adapter, 239 DMAC_INT_EN_SET); 240 else 241 dmac_int_en = ioc_bit; 242 243 dmac_int_en &= ioc_bit; 244 dmac_int_sts &= dmac_int_en; 245 if (dmac_int_sts & ioc_bit) { 246 napi_schedule(&tx->napi); 247 enable_flag = false;/* poll func will enable later */ 248 } 249 } 250 251 if (enable_flag) 252 /* enable isr */ 253 lan743x_csr_write(adapter, INT_EN_SET, 254 INT_BIT_DMA_TX_(tx->channel_number)); 255 } 256 257 static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags) 258 { 259 struct lan743x_rx *rx = context; 260 struct lan743x_adapter *adapter = rx->adapter; 261 bool enable_flag = true; 262 263 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) { 264 lan743x_csr_write(adapter, INT_EN_CLR, 265 INT_BIT_DMA_RX_(rx->channel_number)); 266 } 267 268 if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) { 269 u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number); 270 u32 dmac_int_sts; 271 u32 dmac_int_en; 272 273 if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) 274 dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS); 275 else 276 dmac_int_sts = rx_frame_bit; 277 if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) 278 dmac_int_en = lan743x_csr_read(adapter, 279 DMAC_INT_EN_SET); 280 else 281 dmac_int_en = rx_frame_bit; 282 283 dmac_int_en &= rx_frame_bit; 284 dmac_int_sts &= dmac_int_en; 285 if (dmac_int_sts & rx_frame_bit) { 286 napi_schedule(&rx->napi); 287 enable_flag = false;/* poll funct will enable later */ 288 } 289 } 290 291 if (enable_flag) { 292 /* enable isr */ 293 lan743x_csr_write(adapter, INT_EN_SET, 294 INT_BIT_DMA_RX_(rx->channel_number)); 295 } 296 } 297 298 static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags) 299 { 300 struct lan743x_adapter *adapter = context; 301 unsigned int channel; 302 303 if (int_sts & INT_BIT_ALL_RX_) { 304 for (channel = 0; channel < LAN743X_USED_RX_CHANNELS; 305 channel++) { 306 u32 int_bit = INT_BIT_DMA_RX_(channel); 307 308 if (int_sts & int_bit) { 309 lan743x_rx_isr(&adapter->rx[channel], 310 int_bit, flags); 311 int_sts &= ~int_bit; 312 } 313 } 314 } 315 if (int_sts & INT_BIT_ALL_TX_) { 316 for (channel = 0; channel < adapter->used_tx_channels; 317 channel++) { 318 u32 int_bit = INT_BIT_DMA_TX_(channel); 319 320 if (int_sts & int_bit) { 321 lan743x_tx_isr(&adapter->tx[channel], 322 int_bit, flags); 323 int_sts &= ~int_bit; 324 } 325 } 326 } 327 if (int_sts & INT_BIT_ALL_OTHER_) { 328 if (int_sts & INT_BIT_SW_GP_) { 329 lan743x_intr_software_isr(adapter); 330 int_sts &= ~INT_BIT_SW_GP_; 331 } 332 if (int_sts & INT_BIT_1588_) { 333 lan743x_ptp_isr(adapter); 334 int_sts &= ~INT_BIT_1588_; 335 } 336 } 337 if (int_sts) 338 lan743x_csr_write(adapter, INT_EN_CLR, int_sts); 339 } 340 341 static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr) 342 { 343 struct lan743x_vector *vector = ptr; 344 struct lan743x_adapter *adapter = vector->adapter; 345 irqreturn_t result = IRQ_NONE; 346 u32 int_enables; 347 u32 int_sts; 348 349 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) { 350 int_sts = lan743x_csr_read(adapter, INT_STS); 351 } else if (vector->flags & 352 (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C | 353 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) { 354 int_sts = lan743x_csr_read(adapter, INT_STS_R2C); 355 } else { 356 /* use mask as implied status */ 357 int_sts = vector->int_mask | INT_BIT_MAS_; 358 } 359 360 if (!(int_sts & INT_BIT_MAS_)) 361 goto irq_done; 362 363 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR) 364 /* disable vector interrupt */ 365 lan743x_csr_write(adapter, 366 INT_VEC_EN_CLR, 367 INT_VEC_EN_(vector->vector_index)); 368 369 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR) 370 /* disable master interrupt */ 371 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_); 372 373 if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) { 374 int_enables = lan743x_csr_read(adapter, INT_EN_SET); 375 } else { 376 /* use vector mask as implied enable mask */ 377 int_enables = vector->int_mask; 378 } 379 380 int_sts &= int_enables; 381 int_sts &= vector->int_mask; 382 if (int_sts) { 383 if (vector->handler) { 384 vector->handler(vector->context, 385 int_sts, vector->flags); 386 } else { 387 /* disable interrupts on this vector */ 388 lan743x_csr_write(adapter, INT_EN_CLR, 389 vector->int_mask); 390 } 391 result = IRQ_HANDLED; 392 } 393 394 if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET) 395 /* enable master interrupt */ 396 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_); 397 398 if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET) 399 /* enable vector interrupt */ 400 lan743x_csr_write(adapter, 401 INT_VEC_EN_SET, 402 INT_VEC_EN_(vector->vector_index)); 403 irq_done: 404 return result; 405 } 406 407 static int lan743x_intr_test_isr(struct lan743x_adapter *adapter) 408 { 409 struct lan743x_intr *intr = &adapter->intr; 410 int ret; 411 412 intr->software_isr_flag = false; 413 414 /* enable and activate test interrupt */ 415 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_); 416 lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_); 417 418 ret = wait_event_timeout(intr->software_isr_wq, 419 intr->software_isr_flag, 420 msecs_to_jiffies(200)); 421 422 /* disable test interrupt */ 423 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_); 424 425 return ret > 0 ? 0 : -ENODEV; 426 } 427 428 static int lan743x_intr_register_isr(struct lan743x_adapter *adapter, 429 int vector_index, u32 flags, 430 u32 int_mask, 431 lan743x_vector_handler handler, 432 void *context) 433 { 434 struct lan743x_vector *vector = &adapter->intr.vector_list 435 [vector_index]; 436 int ret; 437 438 vector->adapter = adapter; 439 vector->flags = flags; 440 vector->vector_index = vector_index; 441 vector->int_mask = int_mask; 442 vector->handler = handler; 443 vector->context = context; 444 445 ret = request_irq(vector->irq, 446 lan743x_intr_entry_isr, 447 (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ? 448 IRQF_SHARED : 0, DRIVER_NAME, vector); 449 if (ret) { 450 vector->handler = NULL; 451 vector->context = NULL; 452 vector->int_mask = 0; 453 vector->flags = 0; 454 } 455 return ret; 456 } 457 458 static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter, 459 int vector_index) 460 { 461 struct lan743x_vector *vector = &adapter->intr.vector_list 462 [vector_index]; 463 464 free_irq(vector->irq, vector); 465 vector->handler = NULL; 466 vector->context = NULL; 467 vector->int_mask = 0; 468 vector->flags = 0; 469 } 470 471 static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter, 472 u32 int_mask) 473 { 474 int index; 475 476 for (index = 0; index < adapter->max_vector_count; index++) { 477 if (adapter->intr.vector_list[index].int_mask & int_mask) 478 return adapter->intr.vector_list[index].flags; 479 } 480 return 0; 481 } 482 483 static void lan743x_intr_close(struct lan743x_adapter *adapter) 484 { 485 struct lan743x_intr *intr = &adapter->intr; 486 int index = 0; 487 488 lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_); 489 if (adapter->is_pci11x1x) 490 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x0000FFFF); 491 else 492 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF); 493 494 for (index = 0; index < intr->number_of_vectors; index++) { 495 if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) { 496 lan743x_intr_unregister_isr(adapter, index); 497 intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index); 498 } 499 } 500 501 if (intr->flags & INTR_FLAG_MSI_ENABLED) { 502 pci_disable_msi(adapter->pdev); 503 intr->flags &= ~INTR_FLAG_MSI_ENABLED; 504 } 505 506 if (intr->flags & INTR_FLAG_MSIX_ENABLED) { 507 pci_disable_msix(adapter->pdev); 508 intr->flags &= ~INTR_FLAG_MSIX_ENABLED; 509 } 510 } 511 512 static int lan743x_intr_open(struct lan743x_adapter *adapter) 513 { 514 struct msix_entry msix_entries[PCI11X1X_MAX_VECTOR_COUNT]; 515 struct lan743x_intr *intr = &adapter->intr; 516 unsigned int used_tx_channels; 517 u32 int_vec_en_auto_clr = 0; 518 u8 max_vector_count; 519 u32 int_vec_map0 = 0; 520 u32 int_vec_map1 = 0; 521 int ret = -ENODEV; 522 int index = 0; 523 u32 flags = 0; 524 525 intr->number_of_vectors = 0; 526 527 /* Try to set up MSIX interrupts */ 528 max_vector_count = adapter->max_vector_count; 529 memset(&msix_entries[0], 0, 530 sizeof(struct msix_entry) * max_vector_count); 531 for (index = 0; index < max_vector_count; index++) 532 msix_entries[index].entry = index; 533 used_tx_channels = adapter->used_tx_channels; 534 ret = pci_enable_msix_range(adapter->pdev, 535 msix_entries, 1, 536 1 + used_tx_channels + 537 LAN743X_USED_RX_CHANNELS); 538 539 if (ret > 0) { 540 intr->flags |= INTR_FLAG_MSIX_ENABLED; 541 intr->number_of_vectors = ret; 542 intr->using_vectors = true; 543 for (index = 0; index < intr->number_of_vectors; index++) 544 intr->vector_list[index].irq = msix_entries 545 [index].vector; 546 netif_info(adapter, ifup, adapter->netdev, 547 "using MSIX interrupts, number of vectors = %d\n", 548 intr->number_of_vectors); 549 } 550 551 /* If MSIX failed try to setup using MSI interrupts */ 552 if (!intr->number_of_vectors) { 553 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 554 if (!pci_enable_msi(adapter->pdev)) { 555 intr->flags |= INTR_FLAG_MSI_ENABLED; 556 intr->number_of_vectors = 1; 557 intr->using_vectors = true; 558 intr->vector_list[0].irq = 559 adapter->pdev->irq; 560 netif_info(adapter, ifup, adapter->netdev, 561 "using MSI interrupts, number of vectors = %d\n", 562 intr->number_of_vectors); 563 } 564 } 565 } 566 567 /* If MSIX, and MSI failed, setup using legacy interrupt */ 568 if (!intr->number_of_vectors) { 569 intr->number_of_vectors = 1; 570 intr->using_vectors = false; 571 intr->vector_list[0].irq = intr->irq; 572 netif_info(adapter, ifup, adapter->netdev, 573 "using legacy interrupts\n"); 574 } 575 576 /* At this point we must have at least one irq */ 577 lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF); 578 579 /* map all interrupts to vector 0 */ 580 lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000); 581 lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000); 582 lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000); 583 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 584 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 585 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 586 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR; 587 588 if (intr->using_vectors) { 589 flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 590 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 591 } else { 592 flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR | 593 LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET | 594 LAN743X_VECTOR_FLAG_IRQ_SHARED; 595 } 596 597 if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 598 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ; 599 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C; 600 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR; 601 flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK; 602 flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C; 603 flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C; 604 } 605 606 init_waitqueue_head(&intr->software_isr_wq); 607 608 ret = lan743x_intr_register_isr(adapter, 0, flags, 609 INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ | 610 INT_BIT_ALL_OTHER_, 611 lan743x_intr_shared_isr, adapter); 612 if (ret) 613 goto clean_up; 614 intr->flags |= INTR_FLAG_IRQ_REQUESTED(0); 615 616 if (intr->using_vectors) 617 lan743x_csr_write(adapter, INT_VEC_EN_SET, 618 INT_VEC_EN_(0)); 619 620 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 621 lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD); 622 lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD); 623 lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD); 624 lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD); 625 lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD); 626 lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD); 627 lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD); 628 lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD); 629 if (adapter->is_pci11x1x) { 630 lan743x_csr_write(adapter, INT_MOD_CFG8, LAN743X_INT_MOD); 631 lan743x_csr_write(adapter, INT_MOD_CFG9, LAN743X_INT_MOD); 632 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00007654); 633 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00003210); 634 } else { 635 lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432); 636 lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001); 637 } 638 lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF); 639 } 640 641 /* enable interrupts */ 642 lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_); 643 ret = lan743x_intr_test_isr(adapter); 644 if (ret) 645 goto clean_up; 646 647 if (intr->number_of_vectors > 1) { 648 int number_of_tx_vectors = intr->number_of_vectors - 1; 649 650 if (number_of_tx_vectors > used_tx_channels) 651 number_of_tx_vectors = used_tx_channels; 652 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 653 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 654 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 655 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR | 656 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 657 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 658 659 if (adapter->csr.flags & 660 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 661 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 662 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 663 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 664 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 665 } 666 667 for (index = 0; index < number_of_tx_vectors; index++) { 668 u32 int_bit = INT_BIT_DMA_TX_(index); 669 int vector = index + 1; 670 671 /* map TX interrupt to vector */ 672 int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector); 673 lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1); 674 675 /* Remove TX interrupt from shared mask */ 676 intr->vector_list[0].int_mask &= ~int_bit; 677 ret = lan743x_intr_register_isr(adapter, vector, flags, 678 int_bit, lan743x_tx_isr, 679 &adapter->tx[index]); 680 if (ret) 681 goto clean_up; 682 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 683 if (!(flags & 684 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)) 685 lan743x_csr_write(adapter, INT_VEC_EN_SET, 686 INT_VEC_EN_(vector)); 687 } 688 } 689 if ((intr->number_of_vectors - used_tx_channels) > 1) { 690 int number_of_rx_vectors = intr->number_of_vectors - 691 used_tx_channels - 1; 692 693 if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS) 694 number_of_rx_vectors = LAN743X_USED_RX_CHANNELS; 695 696 flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ | 697 LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C | 698 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK | 699 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR | 700 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR | 701 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET; 702 703 if (adapter->csr.flags & 704 LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) { 705 flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR | 706 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET | 707 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET | 708 LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR | 709 LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR; 710 } 711 for (index = 0; index < number_of_rx_vectors; index++) { 712 int vector = index + 1 + used_tx_channels; 713 u32 int_bit = INT_BIT_DMA_RX_(index); 714 715 /* map RX interrupt to vector */ 716 int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector); 717 lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0); 718 if (flags & 719 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) { 720 int_vec_en_auto_clr |= INT_VEC_EN_(vector); 721 lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR, 722 int_vec_en_auto_clr); 723 } 724 725 /* Remove RX interrupt from shared mask */ 726 intr->vector_list[0].int_mask &= ~int_bit; 727 ret = lan743x_intr_register_isr(adapter, vector, flags, 728 int_bit, lan743x_rx_isr, 729 &adapter->rx[index]); 730 if (ret) 731 goto clean_up; 732 intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector); 733 734 lan743x_csr_write(adapter, INT_VEC_EN_SET, 735 INT_VEC_EN_(vector)); 736 } 737 } 738 return 0; 739 740 clean_up: 741 lan743x_intr_close(adapter); 742 return ret; 743 } 744 745 static int lan743x_dp_write(struct lan743x_adapter *adapter, 746 u32 select, u32 addr, u32 length, u32 *buf) 747 { 748 u32 dp_sel; 749 int i; 750 751 if (lan743x_csr_wait_for_bit_atomic(adapter, DP_SEL, DP_SEL_DPRDY_, 752 1, 40, 100, 100)) 753 return -EIO; 754 dp_sel = lan743x_csr_read(adapter, DP_SEL); 755 dp_sel &= ~DP_SEL_MASK_; 756 dp_sel |= select; 757 lan743x_csr_write(adapter, DP_SEL, dp_sel); 758 759 for (i = 0; i < length; i++) { 760 lan743x_csr_write(adapter, DP_ADDR, addr + i); 761 lan743x_csr_write(adapter, DP_DATA_0, buf[i]); 762 lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_); 763 if (lan743x_csr_wait_for_bit_atomic(adapter, DP_SEL, 764 DP_SEL_DPRDY_, 765 1, 40, 100, 100)) 766 return -EIO; 767 } 768 769 return 0; 770 } 771 772 static u32 lan743x_mac_mii_access(u16 id, u16 index, int read) 773 { 774 u32 ret; 775 776 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) & 777 MAC_MII_ACC_PHY_ADDR_MASK_; 778 ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) & 779 MAC_MII_ACC_MIIRINDA_MASK_; 780 781 if (read) 782 ret |= MAC_MII_ACC_MII_READ_; 783 else 784 ret |= MAC_MII_ACC_MII_WRITE_; 785 ret |= MAC_MII_ACC_MII_BUSY_; 786 787 return ret; 788 } 789 790 static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter) 791 { 792 u32 data; 793 794 return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data, 795 !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000); 796 } 797 798 static int lan743x_mdiobus_read_c22(struct mii_bus *bus, int phy_id, int index) 799 { 800 struct lan743x_adapter *adapter = bus->priv; 801 u32 val, mii_access; 802 int ret; 803 804 /* comfirm MII not busy */ 805 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 806 if (ret < 0) 807 return ret; 808 809 /* set the address, index & direction (read from PHY) */ 810 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ); 811 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 812 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 813 if (ret < 0) 814 return ret; 815 816 val = lan743x_csr_read(adapter, MAC_MII_DATA); 817 return (int)(val & 0xFFFF); 818 } 819 820 static int lan743x_mdiobus_write_c22(struct mii_bus *bus, 821 int phy_id, int index, u16 regval) 822 { 823 struct lan743x_adapter *adapter = bus->priv; 824 u32 val, mii_access; 825 int ret; 826 827 /* confirm MII not busy */ 828 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 829 if (ret < 0) 830 return ret; 831 val = (u32)regval; 832 lan743x_csr_write(adapter, MAC_MII_DATA, val); 833 834 /* set the address, index & direction (write to PHY) */ 835 mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE); 836 lan743x_csr_write(adapter, MAC_MII_ACC, mii_access); 837 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 838 return ret; 839 } 840 841 static u32 lan743x_mac_mmd_access(int id, int dev_addr, int op) 842 { 843 u32 ret; 844 845 ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) & 846 MAC_MII_ACC_PHY_ADDR_MASK_; 847 ret |= (dev_addr << MAC_MII_ACC_MIIMMD_SHIFT_) & 848 MAC_MII_ACC_MIIMMD_MASK_; 849 if (op == MMD_ACCESS_WRITE) 850 ret |= MAC_MII_ACC_MIICMD_WRITE_; 851 else if (op == MMD_ACCESS_READ) 852 ret |= MAC_MII_ACC_MIICMD_READ_; 853 else if (op == MMD_ACCESS_READ_INC) 854 ret |= MAC_MII_ACC_MIICMD_READ_INC_; 855 else 856 ret |= MAC_MII_ACC_MIICMD_ADDR_; 857 ret |= (MAC_MII_ACC_MII_BUSY_ | MAC_MII_ACC_MIICL45_); 858 859 return ret; 860 } 861 862 static int lan743x_mdiobus_read_c45(struct mii_bus *bus, int phy_id, 863 int dev_addr, int index) 864 { 865 struct lan743x_adapter *adapter = bus->priv; 866 u32 mmd_access; 867 int ret; 868 869 /* comfirm MII not busy */ 870 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 871 if (ret < 0) 872 return ret; 873 874 /* Load Register Address */ 875 lan743x_csr_write(adapter, MAC_MII_DATA, index); 876 mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr, 877 MMD_ACCESS_ADDRESS); 878 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access); 879 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 880 if (ret < 0) 881 return ret; 882 883 /* Read Data */ 884 mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr, 885 MMD_ACCESS_READ); 886 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access); 887 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 888 if (ret < 0) 889 return ret; 890 891 ret = lan743x_csr_read(adapter, MAC_MII_DATA); 892 return (int)(ret & 0xFFFF); 893 } 894 895 static int lan743x_mdiobus_write_c45(struct mii_bus *bus, int phy_id, 896 int dev_addr, int index, u16 regval) 897 { 898 struct lan743x_adapter *adapter = bus->priv; 899 u32 mmd_access; 900 int ret; 901 902 /* confirm MII not busy */ 903 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 904 if (ret < 0) 905 return ret; 906 907 /* Load Register Address */ 908 lan743x_csr_write(adapter, MAC_MII_DATA, (u32)index); 909 mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr, 910 MMD_ACCESS_ADDRESS); 911 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access); 912 ret = lan743x_mac_mii_wait_till_not_busy(adapter); 913 if (ret < 0) 914 return ret; 915 916 /* Write Data */ 917 lan743x_csr_write(adapter, MAC_MII_DATA, (u32)regval); 918 mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr, 919 MMD_ACCESS_WRITE); 920 lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access); 921 922 return lan743x_mac_mii_wait_till_not_busy(adapter); 923 } 924 925 static int lan743x_sgmii_wait_till_not_busy(struct lan743x_adapter *adapter) 926 { 927 u32 data; 928 int ret; 929 930 ret = readx_poll_timeout(LAN743X_CSR_READ_OP, SGMII_ACC, data, 931 !(data & SGMII_ACC_SGMII_BZY_), 100, 1000000); 932 if (ret < 0) 933 netif_err(adapter, drv, adapter->netdev, 934 "%s: error %d sgmii wait timeout\n", __func__, ret); 935 936 return ret; 937 } 938 939 int lan743x_sgmii_read(struct lan743x_adapter *adapter, u8 mmd, u16 addr) 940 { 941 u32 mmd_access; 942 int ret; 943 u32 val; 944 945 if (mmd > 31) { 946 netif_err(adapter, probe, adapter->netdev, 947 "%s mmd should <= 31\n", __func__); 948 return -EINVAL; 949 } 950 951 mutex_lock(&adapter->sgmii_rw_lock); 952 /* Load Register Address */ 953 mmd_access = mmd << SGMII_ACC_SGMII_MMD_SHIFT_; 954 mmd_access |= (addr | SGMII_ACC_SGMII_BZY_); 955 lan743x_csr_write(adapter, SGMII_ACC, mmd_access); 956 ret = lan743x_sgmii_wait_till_not_busy(adapter); 957 if (ret < 0) 958 goto sgmii_unlock; 959 960 val = lan743x_csr_read(adapter, SGMII_DATA); 961 ret = (int)(val & SGMII_DATA_MASK_); 962 963 sgmii_unlock: 964 mutex_unlock(&adapter->sgmii_rw_lock); 965 966 return ret; 967 } 968 969 static int lan743x_sgmii_write(struct lan743x_adapter *adapter, 970 u8 mmd, u16 addr, u16 val) 971 { 972 u32 mmd_access; 973 int ret; 974 975 if (mmd > 31) { 976 netif_err(adapter, probe, adapter->netdev, 977 "%s mmd should <= 31\n", __func__); 978 return -EINVAL; 979 } 980 mutex_lock(&adapter->sgmii_rw_lock); 981 /* Load Register Data */ 982 lan743x_csr_write(adapter, SGMII_DATA, (u32)(val & SGMII_DATA_MASK_)); 983 /* Load Register Address */ 984 mmd_access = mmd << SGMII_ACC_SGMII_MMD_SHIFT_; 985 mmd_access |= (addr | SGMII_ACC_SGMII_BZY_ | SGMII_ACC_SGMII_WR_); 986 lan743x_csr_write(adapter, SGMII_ACC, mmd_access); 987 ret = lan743x_sgmii_wait_till_not_busy(adapter); 988 mutex_unlock(&adapter->sgmii_rw_lock); 989 990 return ret; 991 } 992 993 static int lan743x_sgmii_mpll_set(struct lan743x_adapter *adapter, 994 u16 baud) 995 { 996 int mpllctrl0; 997 int mpllctrl1; 998 int miscctrl1; 999 int ret; 1000 1001 mpllctrl0 = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, 1002 VR_MII_GEN2_4_MPLL_CTRL0); 1003 if (mpllctrl0 < 0) 1004 return mpllctrl0; 1005 1006 mpllctrl0 &= ~VR_MII_MPLL_CTRL0_USE_REFCLK_PAD_; 1007 if (baud == VR_MII_BAUD_RATE_1P25GBPS) { 1008 mpllctrl1 = VR_MII_MPLL_MULTIPLIER_100; 1009 /* mpll_baud_clk/4 */ 1010 miscctrl1 = 0xA; 1011 } else { 1012 mpllctrl1 = VR_MII_MPLL_MULTIPLIER_125; 1013 /* mpll_baud_clk/2 */ 1014 miscctrl1 = 0x5; 1015 } 1016 1017 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, 1018 VR_MII_GEN2_4_MPLL_CTRL0, mpllctrl0); 1019 if (ret < 0) 1020 return ret; 1021 1022 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, 1023 VR_MII_GEN2_4_MPLL_CTRL1, mpllctrl1); 1024 if (ret < 0) 1025 return ret; 1026 1027 return lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, 1028 VR_MII_GEN2_4_MISC_CTRL1, miscctrl1); 1029 } 1030 1031 static int lan743x_sgmii_2_5G_mode_set(struct lan743x_adapter *adapter, 1032 bool enable) 1033 { 1034 if (enable) 1035 return lan743x_sgmii_mpll_set(adapter, 1036 VR_MII_BAUD_RATE_3P125GBPS); 1037 else 1038 return lan743x_sgmii_mpll_set(adapter, 1039 VR_MII_BAUD_RATE_1P25GBPS); 1040 } 1041 1042 static int lan743x_is_sgmii_2_5G_mode(struct lan743x_adapter *adapter, 1043 bool *status) 1044 { 1045 int ret; 1046 1047 ret = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, 1048 VR_MII_GEN2_4_MPLL_CTRL1); 1049 if (ret < 0) 1050 return ret; 1051 1052 if (ret == VR_MII_MPLL_MULTIPLIER_125 || 1053 ret == VR_MII_MPLL_MULTIPLIER_50) 1054 *status = true; 1055 else 1056 *status = false; 1057 1058 return 0; 1059 } 1060 1061 static int lan743x_sgmii_aneg_update(struct lan743x_adapter *adapter) 1062 { 1063 enum lan743x_sgmii_lsd lsd = adapter->sgmii_lsd; 1064 int mii_ctrl; 1065 int dgt_ctrl; 1066 int an_ctrl; 1067 int ret; 1068 1069 if (lsd == LINK_2500_MASTER || lsd == LINK_2500_SLAVE) 1070 /* Switch to 2.5 Gbps */ 1071 ret = lan743x_sgmii_2_5G_mode_set(adapter, true); 1072 else 1073 /* Switch to 10/100/1000 Mbps clock */ 1074 ret = lan743x_sgmii_2_5G_mode_set(adapter, false); 1075 if (ret < 0) 1076 return ret; 1077 1078 /* Enable SGMII Auto NEG */ 1079 mii_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, MII_BMCR); 1080 if (mii_ctrl < 0) 1081 return mii_ctrl; 1082 1083 an_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, VR_MII_AN_CTRL); 1084 if (an_ctrl < 0) 1085 return an_ctrl; 1086 1087 dgt_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, 1088 VR_MII_DIG_CTRL1); 1089 if (dgt_ctrl < 0) 1090 return dgt_ctrl; 1091 1092 if (lsd == LINK_2500_MASTER || lsd == LINK_2500_SLAVE) { 1093 mii_ctrl &= ~(BMCR_ANENABLE | BMCR_ANRESTART | BMCR_SPEED100); 1094 mii_ctrl |= BMCR_SPEED1000; 1095 dgt_ctrl |= VR_MII_DIG_CTRL1_CL37_TMR_OVR_RIDE_; 1096 dgt_ctrl &= ~VR_MII_DIG_CTRL1_MAC_AUTO_SW_; 1097 /* In order for Auto-Negotiation to operate properly at 1098 * 2.5 Gbps the 1.6ms link timer values must be adjusted 1099 * The VR_MII_LINK_TIMER_CTRL Register must be set to 1100 * 16'h7A1 and The CL37_TMR_OVR_RIDE bit of the 1101 * VR_MII_DIG_CTRL1 Register set to 1 1102 */ 1103 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, 1104 VR_MII_LINK_TIMER_CTRL, 0x7A1); 1105 if (ret < 0) 1106 return ret; 1107 } else { 1108 mii_ctrl |= (BMCR_ANENABLE | BMCR_ANRESTART); 1109 an_ctrl &= ~VR_MII_AN_CTRL_SGMII_LINK_STS_; 1110 dgt_ctrl &= ~VR_MII_DIG_CTRL1_CL37_TMR_OVR_RIDE_; 1111 dgt_ctrl |= VR_MII_DIG_CTRL1_MAC_AUTO_SW_; 1112 } 1113 1114 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR, 1115 mii_ctrl); 1116 if (ret < 0) 1117 return ret; 1118 1119 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, 1120 VR_MII_DIG_CTRL1, dgt_ctrl); 1121 if (ret < 0) 1122 return ret; 1123 1124 return lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, 1125 VR_MII_AN_CTRL, an_ctrl); 1126 } 1127 1128 static int lan743x_pcs_seq_state(struct lan743x_adapter *adapter, u8 state) 1129 { 1130 u8 wait_cnt = 0; 1131 u32 dig_sts; 1132 1133 do { 1134 dig_sts = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, 1135 VR_MII_DIG_STS); 1136 if (((dig_sts & VR_MII_DIG_STS_PSEQ_STATE_MASK_) >> 1137 VR_MII_DIG_STS_PSEQ_STATE_POS_) == state) 1138 break; 1139 usleep_range(1000, 2000); 1140 } while (wait_cnt++ < 10); 1141 1142 if (wait_cnt >= 10) 1143 return -ETIMEDOUT; 1144 1145 return 0; 1146 } 1147 1148 static int lan743x_sgmii_config(struct lan743x_adapter *adapter) 1149 { 1150 struct net_device *netdev = adapter->netdev; 1151 struct phy_device *phydev = netdev->phydev; 1152 enum lan743x_sgmii_lsd lsd = POWER_DOWN; 1153 int mii_ctl; 1154 bool status; 1155 int ret; 1156 1157 switch (phydev->speed) { 1158 case SPEED_2500: 1159 if (phydev->master_slave_state == MASTER_SLAVE_STATE_MASTER) 1160 lsd = LINK_2500_MASTER; 1161 else 1162 lsd = LINK_2500_SLAVE; 1163 break; 1164 case SPEED_1000: 1165 if (phydev->master_slave_state == MASTER_SLAVE_STATE_MASTER) 1166 lsd = LINK_1000_MASTER; 1167 else 1168 lsd = LINK_1000_SLAVE; 1169 break; 1170 case SPEED_100: 1171 if (phydev->duplex) 1172 lsd = LINK_100FD; 1173 else 1174 lsd = LINK_100HD; 1175 break; 1176 case SPEED_10: 1177 if (phydev->duplex) 1178 lsd = LINK_10FD; 1179 else 1180 lsd = LINK_10HD; 1181 break; 1182 default: 1183 netif_err(adapter, drv, adapter->netdev, 1184 "Invalid speed %d\n", phydev->speed); 1185 return -EINVAL; 1186 } 1187 1188 adapter->sgmii_lsd = lsd; 1189 ret = lan743x_sgmii_aneg_update(adapter); 1190 if (ret < 0) { 1191 netif_err(adapter, drv, adapter->netdev, 1192 "error %d SGMII cfg failed\n", ret); 1193 return ret; 1194 } 1195 1196 ret = lan743x_is_sgmii_2_5G_mode(adapter, &status); 1197 if (ret < 0) { 1198 netif_err(adapter, drv, adapter->netdev, 1199 "erro %d SGMII get mode failed\n", ret); 1200 return ret; 1201 } 1202 1203 if (status) 1204 netif_dbg(adapter, drv, adapter->netdev, 1205 "SGMII 2.5G mode enable\n"); 1206 else 1207 netif_dbg(adapter, drv, adapter->netdev, 1208 "SGMII 1G mode enable\n"); 1209 1210 /* SGMII/1000/2500BASE-X PCS power down */ 1211 mii_ctl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, MII_BMCR); 1212 if (mii_ctl < 0) 1213 return mii_ctl; 1214 1215 mii_ctl |= BMCR_PDOWN; 1216 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR, mii_ctl); 1217 if (ret < 0) 1218 return ret; 1219 1220 ret = lan743x_pcs_seq_state(adapter, PCS_POWER_STATE_DOWN); 1221 if (ret < 0) 1222 return ret; 1223 1224 /* SGMII/1000/2500BASE-X PCS power up */ 1225 mii_ctl &= ~BMCR_PDOWN; 1226 ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR, mii_ctl); 1227 if (ret < 0) 1228 return ret; 1229 1230 ret = lan743x_pcs_seq_state(adapter, PCS_POWER_STATE_UP); 1231 if (ret < 0) 1232 return ret; 1233 1234 return 0; 1235 } 1236 1237 static void lan743x_mac_set_address(struct lan743x_adapter *adapter, 1238 u8 *addr) 1239 { 1240 u32 addr_lo, addr_hi; 1241 1242 addr_lo = addr[0] | 1243 addr[1] << 8 | 1244 addr[2] << 16 | 1245 addr[3] << 24; 1246 addr_hi = addr[4] | 1247 addr[5] << 8; 1248 lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo); 1249 lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi); 1250 1251 ether_addr_copy(adapter->mac_address, addr); 1252 netif_info(adapter, drv, adapter->netdev, 1253 "MAC address set to %pM\n", addr); 1254 } 1255 1256 static int lan743x_mac_init(struct lan743x_adapter *adapter) 1257 { 1258 bool mac_address_valid = true; 1259 struct net_device *netdev; 1260 u32 mac_addr_hi = 0; 1261 u32 mac_addr_lo = 0; 1262 u32 data; 1263 1264 netdev = adapter->netdev; 1265 1266 /* disable auto duplex, and speed detection. Phylib does that */ 1267 data = lan743x_csr_read(adapter, MAC_CR); 1268 data &= ~(MAC_CR_ADD_ | MAC_CR_ASD_); 1269 data |= MAC_CR_CNTR_RST_; 1270 lan743x_csr_write(adapter, MAC_CR, data); 1271 1272 if (!is_valid_ether_addr(adapter->mac_address)) { 1273 mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH); 1274 mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL); 1275 adapter->mac_address[0] = mac_addr_lo & 0xFF; 1276 adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF; 1277 adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF; 1278 adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF; 1279 adapter->mac_address[4] = mac_addr_hi & 0xFF; 1280 adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF; 1281 1282 if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) && 1283 mac_addr_lo == 0xFFFFFFFF) { 1284 mac_address_valid = false; 1285 } else if (!is_valid_ether_addr(adapter->mac_address)) { 1286 mac_address_valid = false; 1287 } 1288 1289 if (!mac_address_valid) 1290 eth_random_addr(adapter->mac_address); 1291 } 1292 lan743x_mac_set_address(adapter, adapter->mac_address); 1293 eth_hw_addr_set(netdev, adapter->mac_address); 1294 1295 return 0; 1296 } 1297 1298 static int lan743x_mac_open(struct lan743x_adapter *adapter) 1299 { 1300 u32 temp; 1301 1302 temp = lan743x_csr_read(adapter, MAC_RX); 1303 lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_); 1304 temp = lan743x_csr_read(adapter, MAC_TX); 1305 lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_); 1306 return 0; 1307 } 1308 1309 static void lan743x_mac_close(struct lan743x_adapter *adapter) 1310 { 1311 u32 temp; 1312 1313 temp = lan743x_csr_read(adapter, MAC_TX); 1314 temp &= ~MAC_TX_TXEN_; 1315 lan743x_csr_write(adapter, MAC_TX, temp); 1316 lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_, 1317 1, 1000, 20000, 100); 1318 1319 temp = lan743x_csr_read(adapter, MAC_RX); 1320 temp &= ~MAC_RX_RXEN_; 1321 lan743x_csr_write(adapter, MAC_RX, temp); 1322 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 1323 1, 1000, 20000, 100); 1324 } 1325 1326 void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter, 1327 bool tx_enable, bool rx_enable) 1328 { 1329 u32 flow_setting = 0; 1330 1331 /* set maximum pause time because when fifo space frees 1332 * up a zero value pause frame will be sent to release the pause 1333 */ 1334 flow_setting = MAC_FLOW_CR_FCPT_MASK_; 1335 if (tx_enable) 1336 flow_setting |= MAC_FLOW_CR_TX_FCEN_; 1337 if (rx_enable) 1338 flow_setting |= MAC_FLOW_CR_RX_FCEN_; 1339 lan743x_csr_write(adapter, MAC_FLOW, flow_setting); 1340 } 1341 1342 static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu) 1343 { 1344 int enabled = 0; 1345 u32 mac_rx = 0; 1346 1347 mac_rx = lan743x_csr_read(adapter, MAC_RX); 1348 if (mac_rx & MAC_RX_RXEN_) { 1349 enabled = 1; 1350 if (mac_rx & MAC_RX_RXD_) { 1351 lan743x_csr_write(adapter, MAC_RX, mac_rx); 1352 mac_rx &= ~MAC_RX_RXD_; 1353 } 1354 mac_rx &= ~MAC_RX_RXEN_; 1355 lan743x_csr_write(adapter, MAC_RX, mac_rx); 1356 lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_, 1357 1, 1000, 20000, 100); 1358 lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_); 1359 } 1360 1361 mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_); 1362 mac_rx |= (((new_mtu + ETH_HLEN + ETH_FCS_LEN) 1363 << MAC_RX_MAX_SIZE_SHIFT_) & MAC_RX_MAX_SIZE_MASK_); 1364 lan743x_csr_write(adapter, MAC_RX, mac_rx); 1365 1366 if (enabled) { 1367 mac_rx |= MAC_RX_RXEN_; 1368 lan743x_csr_write(adapter, MAC_RX, mac_rx); 1369 } 1370 return 0; 1371 } 1372 1373 /* PHY */ 1374 static int lan743x_phy_reset(struct lan743x_adapter *adapter) 1375 { 1376 u32 data; 1377 1378 /* Only called with in probe, and before mdiobus_register */ 1379 1380 data = lan743x_csr_read(adapter, PMT_CTL); 1381 data |= PMT_CTL_ETH_PHY_RST_; 1382 lan743x_csr_write(adapter, PMT_CTL, data); 1383 1384 return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data, 1385 (!(data & PMT_CTL_ETH_PHY_RST_) && 1386 (data & PMT_CTL_READY_)), 1387 50000, 1000000); 1388 } 1389 1390 static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter, 1391 u16 local_adv, u16 remote_adv) 1392 { 1393 struct lan743x_phy *phy = &adapter->phy; 1394 u8 cap; 1395 1396 if (phy->fc_autoneg) 1397 cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv); 1398 else 1399 cap = phy->fc_request_control; 1400 1401 lan743x_mac_flow_ctrl_set_enables(adapter, 1402 cap & FLOW_CTRL_TX, 1403 cap & FLOW_CTRL_RX); 1404 } 1405 1406 static int lan743x_phy_init(struct lan743x_adapter *adapter) 1407 { 1408 return lan743x_phy_reset(adapter); 1409 } 1410 1411 static void lan743x_phy_link_status_change(struct net_device *netdev) 1412 { 1413 struct lan743x_adapter *adapter = netdev_priv(netdev); 1414 struct phy_device *phydev = netdev->phydev; 1415 u32 data; 1416 1417 phy_print_status(phydev); 1418 if (phydev->state == PHY_RUNNING) { 1419 int remote_advertisement = 0; 1420 int local_advertisement = 0; 1421 1422 data = lan743x_csr_read(adapter, MAC_CR); 1423 1424 /* set duplex mode */ 1425 if (phydev->duplex) 1426 data |= MAC_CR_DPX_; 1427 else 1428 data &= ~MAC_CR_DPX_; 1429 1430 /* set bus speed */ 1431 switch (phydev->speed) { 1432 case SPEED_10: 1433 data &= ~MAC_CR_CFG_H_; 1434 data &= ~MAC_CR_CFG_L_; 1435 break; 1436 case SPEED_100: 1437 data &= ~MAC_CR_CFG_H_; 1438 data |= MAC_CR_CFG_L_; 1439 break; 1440 case SPEED_1000: 1441 data |= MAC_CR_CFG_H_; 1442 data &= ~MAC_CR_CFG_L_; 1443 break; 1444 case SPEED_2500: 1445 data |= MAC_CR_CFG_H_; 1446 data |= MAC_CR_CFG_L_; 1447 break; 1448 } 1449 lan743x_csr_write(adapter, MAC_CR, data); 1450 1451 local_advertisement = 1452 linkmode_adv_to_mii_adv_t(phydev->advertising); 1453 remote_advertisement = 1454 linkmode_adv_to_mii_adv_t(phydev->lp_advertising); 1455 1456 lan743x_phy_update_flowcontrol(adapter, local_advertisement, 1457 remote_advertisement); 1458 lan743x_ptp_update_latency(adapter, phydev->speed); 1459 if (phydev->interface == PHY_INTERFACE_MODE_SGMII || 1460 phydev->interface == PHY_INTERFACE_MODE_1000BASEX || 1461 phydev->interface == PHY_INTERFACE_MODE_2500BASEX) 1462 lan743x_sgmii_config(adapter); 1463 } 1464 } 1465 1466 static void lan743x_phy_close(struct lan743x_adapter *adapter) 1467 { 1468 struct net_device *netdev = adapter->netdev; 1469 1470 phy_stop(netdev->phydev); 1471 phy_disconnect(netdev->phydev); 1472 } 1473 1474 static void lan743x_phy_interface_select(struct lan743x_adapter *adapter) 1475 { 1476 u32 id_rev; 1477 u32 data; 1478 1479 data = lan743x_csr_read(adapter, MAC_CR); 1480 id_rev = adapter->csr.id_rev & ID_REV_ID_MASK_; 1481 1482 if (adapter->is_pci11x1x && adapter->is_sgmii_en) 1483 adapter->phy_interface = PHY_INTERFACE_MODE_SGMII; 1484 else if (id_rev == ID_REV_ID_LAN7430_) 1485 adapter->phy_interface = PHY_INTERFACE_MODE_GMII; 1486 else if ((id_rev == ID_REV_ID_LAN7431_) && (data & MAC_CR_MII_EN_)) 1487 adapter->phy_interface = PHY_INTERFACE_MODE_MII; 1488 else 1489 adapter->phy_interface = PHY_INTERFACE_MODE_RGMII; 1490 } 1491 1492 static int lan743x_phy_open(struct lan743x_adapter *adapter) 1493 { 1494 struct net_device *netdev = adapter->netdev; 1495 struct lan743x_phy *phy = &adapter->phy; 1496 struct fixed_phy_status fphy_status = { 1497 .link = 1, 1498 .speed = SPEED_1000, 1499 .duplex = DUPLEX_FULL, 1500 }; 1501 struct phy_device *phydev; 1502 int ret = -EIO; 1503 1504 /* try devicetree phy, or fixed link */ 1505 phydev = of_phy_get_and_connect(netdev, adapter->pdev->dev.of_node, 1506 lan743x_phy_link_status_change); 1507 1508 if (!phydev) { 1509 /* try internal phy */ 1510 phydev = phy_find_first(adapter->mdiobus); 1511 if (!phydev) { 1512 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == 1513 ID_REV_ID_LAN7431_) { 1514 phydev = fixed_phy_register(PHY_POLL, 1515 &fphy_status, NULL); 1516 if (IS_ERR(phydev)) { 1517 netdev_err(netdev, "No PHY/fixed_PHY found\n"); 1518 return -EIO; 1519 } 1520 } else { 1521 goto return_error; 1522 } 1523 } 1524 1525 lan743x_phy_interface_select(adapter); 1526 1527 ret = phy_connect_direct(netdev, phydev, 1528 lan743x_phy_link_status_change, 1529 adapter->phy_interface); 1530 if (ret) 1531 goto return_error; 1532 } 1533 1534 /* MAC doesn't support 1000T Half */ 1535 phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT); 1536 1537 /* support both flow controls */ 1538 phy_support_asym_pause(phydev); 1539 phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX); 1540 phy->fc_autoneg = phydev->autoneg; 1541 1542 phy_start(phydev); 1543 phy_start_aneg(phydev); 1544 phy_attached_info(phydev); 1545 return 0; 1546 1547 return_error: 1548 return ret; 1549 } 1550 1551 static void lan743x_rfe_open(struct lan743x_adapter *adapter) 1552 { 1553 lan743x_csr_write(adapter, RFE_RSS_CFG, 1554 RFE_RSS_CFG_UDP_IPV6_EX_ | 1555 RFE_RSS_CFG_TCP_IPV6_EX_ | 1556 RFE_RSS_CFG_IPV6_EX_ | 1557 RFE_RSS_CFG_UDP_IPV6_ | 1558 RFE_RSS_CFG_TCP_IPV6_ | 1559 RFE_RSS_CFG_IPV6_ | 1560 RFE_RSS_CFG_UDP_IPV4_ | 1561 RFE_RSS_CFG_TCP_IPV4_ | 1562 RFE_RSS_CFG_IPV4_ | 1563 RFE_RSS_CFG_VALID_HASH_BITS_ | 1564 RFE_RSS_CFG_RSS_QUEUE_ENABLE_ | 1565 RFE_RSS_CFG_RSS_HASH_STORE_ | 1566 RFE_RSS_CFG_RSS_ENABLE_); 1567 } 1568 1569 static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter) 1570 { 1571 u8 *mac_addr; 1572 u32 mac_addr_hi = 0; 1573 u32 mac_addr_lo = 0; 1574 1575 /* Add mac address to perfect Filter */ 1576 mac_addr = adapter->mac_address; 1577 mac_addr_lo = ((((u32)(mac_addr[0])) << 0) | 1578 (((u32)(mac_addr[1])) << 8) | 1579 (((u32)(mac_addr[2])) << 16) | 1580 (((u32)(mac_addr[3])) << 24)); 1581 mac_addr_hi = ((((u32)(mac_addr[4])) << 0) | 1582 (((u32)(mac_addr[5])) << 8)); 1583 1584 lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo); 1585 lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0), 1586 mac_addr_hi | RFE_ADDR_FILT_HI_VALID_); 1587 } 1588 1589 static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter) 1590 { 1591 struct net_device *netdev = adapter->netdev; 1592 u32 hash_table[DP_SEL_VHF_HASH_LEN]; 1593 u32 rfctl; 1594 u32 data; 1595 1596 rfctl = lan743x_csr_read(adapter, RFE_CTL); 1597 rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ | 1598 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_); 1599 rfctl |= RFE_CTL_AB_; 1600 if (netdev->flags & IFF_PROMISC) { 1601 rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_; 1602 } else { 1603 if (netdev->flags & IFF_ALLMULTI) 1604 rfctl |= RFE_CTL_AM_; 1605 } 1606 1607 if (netdev->features & NETIF_F_RXCSUM) 1608 rfctl |= RFE_CTL_IP_COE_ | RFE_CTL_TCP_UDP_COE_; 1609 1610 memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32)); 1611 if (netdev_mc_count(netdev)) { 1612 struct netdev_hw_addr *ha; 1613 int i; 1614 1615 rfctl |= RFE_CTL_DA_PERFECT_; 1616 i = 1; 1617 netdev_for_each_mc_addr(ha, netdev) { 1618 /* set first 32 into Perfect Filter */ 1619 if (i < 33) { 1620 lan743x_csr_write(adapter, 1621 RFE_ADDR_FILT_HI(i), 0); 1622 data = ha->addr[3]; 1623 data = ha->addr[2] | (data << 8); 1624 data = ha->addr[1] | (data << 8); 1625 data = ha->addr[0] | (data << 8); 1626 lan743x_csr_write(adapter, 1627 RFE_ADDR_FILT_LO(i), data); 1628 data = ha->addr[5]; 1629 data = ha->addr[4] | (data << 8); 1630 data |= RFE_ADDR_FILT_HI_VALID_; 1631 lan743x_csr_write(adapter, 1632 RFE_ADDR_FILT_HI(i), data); 1633 } else { 1634 u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >> 1635 23) & 0x1FF; 1636 hash_table[bitnum / 32] |= (1 << (bitnum % 32)); 1637 rfctl |= RFE_CTL_MCAST_HASH_; 1638 } 1639 i++; 1640 } 1641 } 1642 1643 lan743x_dp_write(adapter, DP_SEL_RFE_RAM, 1644 DP_SEL_VHF_VLAN_LEN, 1645 DP_SEL_VHF_HASH_LEN, hash_table); 1646 lan743x_csr_write(adapter, RFE_CTL, rfctl); 1647 } 1648 1649 static int lan743x_dmac_init(struct lan743x_adapter *adapter) 1650 { 1651 u32 data = 0; 1652 1653 lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_); 1654 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_, 1655 0, 1000, 20000, 100); 1656 switch (DEFAULT_DMA_DESCRIPTOR_SPACING) { 1657 case DMA_DESCRIPTOR_SPACING_16: 1658 data = DMAC_CFG_MAX_DSPACE_16_; 1659 break; 1660 case DMA_DESCRIPTOR_SPACING_32: 1661 data = DMAC_CFG_MAX_DSPACE_32_; 1662 break; 1663 case DMA_DESCRIPTOR_SPACING_64: 1664 data = DMAC_CFG_MAX_DSPACE_64_; 1665 break; 1666 case DMA_DESCRIPTOR_SPACING_128: 1667 data = DMAC_CFG_MAX_DSPACE_128_; 1668 break; 1669 default: 1670 return -EPERM; 1671 } 1672 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 1673 data |= DMAC_CFG_COAL_EN_; 1674 data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_; 1675 data |= DMAC_CFG_MAX_READ_REQ_SET_(6); 1676 lan743x_csr_write(adapter, DMAC_CFG, data); 1677 data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1); 1678 data |= DMAC_COAL_CFG_TIMER_TX_START_; 1679 data |= DMAC_COAL_CFG_FLUSH_INTS_; 1680 data |= DMAC_COAL_CFG_INT_EXIT_COAL_; 1681 data |= DMAC_COAL_CFG_CSR_EXIT_COAL_; 1682 data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A); 1683 data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C); 1684 lan743x_csr_write(adapter, DMAC_COAL_CFG, data); 1685 data = DMAC_OBFF_TX_THRES_SET_(0x08); 1686 data |= DMAC_OBFF_RX_THRES_SET_(0x0A); 1687 lan743x_csr_write(adapter, DMAC_OBFF_CFG, data); 1688 return 0; 1689 } 1690 1691 static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter, 1692 int tx_channel) 1693 { 1694 u32 dmac_cmd = 0; 1695 1696 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1697 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1698 DMAC_CMD_START_T_(tx_channel)), 1699 (dmac_cmd & 1700 DMAC_CMD_STOP_T_(tx_channel))); 1701 } 1702 1703 static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter, 1704 int tx_channel) 1705 { 1706 int timeout = 100; 1707 int result = 0; 1708 1709 while (timeout && 1710 ((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) == 1711 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1712 usleep_range(1000, 20000); 1713 timeout--; 1714 } 1715 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1716 result = -ENODEV; 1717 return result; 1718 } 1719 1720 static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter, 1721 int rx_channel) 1722 { 1723 u32 dmac_cmd = 0; 1724 1725 dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD); 1726 return DMAC_CHANNEL_STATE_SET((dmac_cmd & 1727 DMAC_CMD_START_R_(rx_channel)), 1728 (dmac_cmd & 1729 DMAC_CMD_STOP_R_(rx_channel))); 1730 } 1731 1732 static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter, 1733 int rx_channel) 1734 { 1735 int timeout = 100; 1736 int result = 0; 1737 1738 while (timeout && 1739 ((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) == 1740 DMAC_CHANNEL_STATE_STOP_PENDING)) { 1741 usleep_range(1000, 20000); 1742 timeout--; 1743 } 1744 if (result == DMAC_CHANNEL_STATE_STOP_PENDING) 1745 result = -ENODEV; 1746 return result; 1747 } 1748 1749 static void lan743x_tx_release_desc(struct lan743x_tx *tx, 1750 int descriptor_index, bool cleanup) 1751 { 1752 struct lan743x_tx_buffer_info *buffer_info = NULL; 1753 struct lan743x_tx_descriptor *descriptor = NULL; 1754 u32 descriptor_type = 0; 1755 bool ignore_sync; 1756 1757 descriptor = &tx->ring_cpu_ptr[descriptor_index]; 1758 buffer_info = &tx->buffer_info[descriptor_index]; 1759 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE)) 1760 goto done; 1761 1762 descriptor_type = le32_to_cpu(descriptor->data0) & 1763 TX_DESC_DATA0_DTYPE_MASK_; 1764 if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_) 1765 goto clean_up_data_descriptor; 1766 else 1767 goto clear_active; 1768 1769 clean_up_data_descriptor: 1770 if (buffer_info->dma_ptr) { 1771 if (buffer_info->flags & 1772 TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) { 1773 dma_unmap_page(&tx->adapter->pdev->dev, 1774 buffer_info->dma_ptr, 1775 buffer_info->buffer_length, 1776 DMA_TO_DEVICE); 1777 } else { 1778 dma_unmap_single(&tx->adapter->pdev->dev, 1779 buffer_info->dma_ptr, 1780 buffer_info->buffer_length, 1781 DMA_TO_DEVICE); 1782 } 1783 buffer_info->dma_ptr = 0; 1784 buffer_info->buffer_length = 0; 1785 } 1786 if (!buffer_info->skb) 1787 goto clear_active; 1788 1789 if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) { 1790 dev_kfree_skb_any(buffer_info->skb); 1791 goto clear_skb; 1792 } 1793 1794 if (cleanup) { 1795 lan743x_ptp_unrequest_tx_timestamp(tx->adapter); 1796 dev_kfree_skb_any(buffer_info->skb); 1797 } else { 1798 ignore_sync = (buffer_info->flags & 1799 TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0; 1800 lan743x_ptp_tx_timestamp_skb(tx->adapter, 1801 buffer_info->skb, ignore_sync); 1802 } 1803 1804 clear_skb: 1805 buffer_info->skb = NULL; 1806 1807 clear_active: 1808 buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE; 1809 1810 done: 1811 memset(buffer_info, 0, sizeof(*buffer_info)); 1812 memset(descriptor, 0, sizeof(*descriptor)); 1813 } 1814 1815 static int lan743x_tx_next_index(struct lan743x_tx *tx, int index) 1816 { 1817 return ((++index) % tx->ring_size); 1818 } 1819 1820 static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx) 1821 { 1822 while (le32_to_cpu(*tx->head_cpu_ptr) != (tx->last_head)) { 1823 lan743x_tx_release_desc(tx, tx->last_head, false); 1824 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1825 } 1826 } 1827 1828 static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx) 1829 { 1830 u32 original_head = 0; 1831 1832 original_head = tx->last_head; 1833 do { 1834 lan743x_tx_release_desc(tx, tx->last_head, true); 1835 tx->last_head = lan743x_tx_next_index(tx, tx->last_head); 1836 } while (tx->last_head != original_head); 1837 memset(tx->ring_cpu_ptr, 0, 1838 sizeof(*tx->ring_cpu_ptr) * (tx->ring_size)); 1839 memset(tx->buffer_info, 0, 1840 sizeof(*tx->buffer_info) * (tx->ring_size)); 1841 } 1842 1843 static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx, 1844 struct sk_buff *skb) 1845 { 1846 int result = 1; /* 1 for the main skb buffer */ 1847 int nr_frags = 0; 1848 1849 if (skb_is_gso(skb)) 1850 result++; /* requires an extension descriptor */ 1851 nr_frags = skb_shinfo(skb)->nr_frags; 1852 result += nr_frags; /* 1 for each fragment buffer */ 1853 return result; 1854 } 1855 1856 static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx) 1857 { 1858 int last_head = tx->last_head; 1859 int last_tail = tx->last_tail; 1860 1861 if (last_tail >= last_head) 1862 return tx->ring_size - last_tail + last_head - 1; 1863 else 1864 return last_head - last_tail - 1; 1865 } 1866 1867 void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx, 1868 bool enable_timestamping, 1869 bool enable_onestep_sync) 1870 { 1871 if (enable_timestamping) 1872 tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED; 1873 else 1874 tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED; 1875 if (enable_onestep_sync) 1876 tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC; 1877 else 1878 tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC; 1879 } 1880 1881 static int lan743x_tx_frame_start(struct lan743x_tx *tx, 1882 unsigned char *first_buffer, 1883 unsigned int first_buffer_length, 1884 unsigned int frame_length, 1885 bool time_stamp, 1886 bool check_sum) 1887 { 1888 /* called only from within lan743x_tx_xmit_frame. 1889 * assuming tx->ring_lock has already been acquired. 1890 */ 1891 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1892 struct lan743x_tx_buffer_info *buffer_info = NULL; 1893 struct lan743x_adapter *adapter = tx->adapter; 1894 struct device *dev = &adapter->pdev->dev; 1895 dma_addr_t dma_ptr; 1896 1897 tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS; 1898 tx->frame_first = tx->last_tail; 1899 tx->frame_tail = tx->frame_first; 1900 1901 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1902 buffer_info = &tx->buffer_info[tx->frame_tail]; 1903 dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length, 1904 DMA_TO_DEVICE); 1905 if (dma_mapping_error(dev, dma_ptr)) 1906 return -ENOMEM; 1907 1908 tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr)); 1909 tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr)); 1910 tx_descriptor->data3 = cpu_to_le32((frame_length << 16) & 1911 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_); 1912 1913 buffer_info->skb = NULL; 1914 buffer_info->dma_ptr = dma_ptr; 1915 buffer_info->buffer_length = first_buffer_length; 1916 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1917 1918 tx->frame_data0 = (first_buffer_length & 1919 TX_DESC_DATA0_BUF_LENGTH_MASK_) | 1920 TX_DESC_DATA0_DTYPE_DATA_ | 1921 TX_DESC_DATA0_FS_ | 1922 TX_DESC_DATA0_FCS_; 1923 if (time_stamp) 1924 tx->frame_data0 |= TX_DESC_DATA0_TSE_; 1925 1926 if (check_sum) 1927 tx->frame_data0 |= TX_DESC_DATA0_ICE_ | 1928 TX_DESC_DATA0_IPE_ | 1929 TX_DESC_DATA0_TPE_; 1930 1931 /* data0 will be programmed in one of other frame assembler functions */ 1932 return 0; 1933 } 1934 1935 static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx, 1936 unsigned int frame_length, 1937 int nr_frags) 1938 { 1939 /* called only from within lan743x_tx_xmit_frame. 1940 * assuming tx->ring_lock has already been acquired. 1941 */ 1942 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1943 struct lan743x_tx_buffer_info *buffer_info = NULL; 1944 1945 /* wrap up previous descriptor */ 1946 tx->frame_data0 |= TX_DESC_DATA0_EXT_; 1947 if (nr_frags <= 0) { 1948 tx->frame_data0 |= TX_DESC_DATA0_LS_; 1949 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 1950 } 1951 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1952 tx_descriptor->data0 = cpu_to_le32(tx->frame_data0); 1953 1954 /* move to next descriptor */ 1955 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 1956 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1957 buffer_info = &tx->buffer_info[tx->frame_tail]; 1958 1959 /* add extension descriptor */ 1960 tx_descriptor->data1 = 0; 1961 tx_descriptor->data2 = 0; 1962 tx_descriptor->data3 = 0; 1963 1964 buffer_info->skb = NULL; 1965 buffer_info->dma_ptr = 0; 1966 buffer_info->buffer_length = 0; 1967 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 1968 1969 tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) | 1970 TX_DESC_DATA0_DTYPE_EXT_ | 1971 TX_DESC_DATA0_EXT_LSO_; 1972 1973 /* data0 will be programmed in one of other frame assembler functions */ 1974 } 1975 1976 static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx, 1977 const skb_frag_t *fragment, 1978 unsigned int frame_length) 1979 { 1980 /* called only from within lan743x_tx_xmit_frame 1981 * assuming tx->ring_lock has already been acquired 1982 */ 1983 struct lan743x_tx_descriptor *tx_descriptor = NULL; 1984 struct lan743x_tx_buffer_info *buffer_info = NULL; 1985 struct lan743x_adapter *adapter = tx->adapter; 1986 struct device *dev = &adapter->pdev->dev; 1987 unsigned int fragment_length = 0; 1988 dma_addr_t dma_ptr; 1989 1990 fragment_length = skb_frag_size(fragment); 1991 if (!fragment_length) 1992 return 0; 1993 1994 /* wrap up previous descriptor */ 1995 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 1996 tx_descriptor->data0 = cpu_to_le32(tx->frame_data0); 1997 1998 /* move to next descriptor */ 1999 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 2000 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 2001 buffer_info = &tx->buffer_info[tx->frame_tail]; 2002 dma_ptr = skb_frag_dma_map(dev, fragment, 2003 0, fragment_length, 2004 DMA_TO_DEVICE); 2005 if (dma_mapping_error(dev, dma_ptr)) { 2006 int desc_index; 2007 2008 /* cleanup all previously setup descriptors */ 2009 desc_index = tx->frame_first; 2010 while (desc_index != tx->frame_tail) { 2011 lan743x_tx_release_desc(tx, desc_index, true); 2012 desc_index = lan743x_tx_next_index(tx, desc_index); 2013 } 2014 dma_wmb(); 2015 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 2016 tx->frame_first = 0; 2017 tx->frame_data0 = 0; 2018 tx->frame_tail = 0; 2019 return -ENOMEM; 2020 } 2021 2022 tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr)); 2023 tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr)); 2024 tx_descriptor->data3 = cpu_to_le32((frame_length << 16) & 2025 TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_); 2026 2027 buffer_info->skb = NULL; 2028 buffer_info->dma_ptr = dma_ptr; 2029 buffer_info->buffer_length = fragment_length; 2030 buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE; 2031 buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT; 2032 2033 tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) | 2034 TX_DESC_DATA0_DTYPE_DATA_ | 2035 TX_DESC_DATA0_FCS_; 2036 2037 /* data0 will be programmed in one of other frame assembler functions */ 2038 return 0; 2039 } 2040 2041 static void lan743x_tx_frame_end(struct lan743x_tx *tx, 2042 struct sk_buff *skb, 2043 bool time_stamp, 2044 bool ignore_sync) 2045 { 2046 /* called only from within lan743x_tx_xmit_frame 2047 * assuming tx->ring_lock has already been acquired 2048 */ 2049 struct lan743x_tx_descriptor *tx_descriptor = NULL; 2050 struct lan743x_tx_buffer_info *buffer_info = NULL; 2051 struct lan743x_adapter *adapter = tx->adapter; 2052 u32 tx_tail_flags = 0; 2053 2054 /* wrap up previous descriptor */ 2055 if ((tx->frame_data0 & TX_DESC_DATA0_DTYPE_MASK_) == 2056 TX_DESC_DATA0_DTYPE_DATA_) { 2057 tx->frame_data0 |= TX_DESC_DATA0_LS_; 2058 tx->frame_data0 |= TX_DESC_DATA0_IOC_; 2059 } 2060 2061 tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail]; 2062 buffer_info = &tx->buffer_info[tx->frame_tail]; 2063 buffer_info->skb = skb; 2064 if (time_stamp) 2065 buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED; 2066 if (ignore_sync) 2067 buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC; 2068 2069 tx_descriptor->data0 = cpu_to_le32(tx->frame_data0); 2070 tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail); 2071 tx->last_tail = tx->frame_tail; 2072 2073 dma_wmb(); 2074 2075 if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 2076 tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_; 2077 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) 2078 tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ | 2079 TX_TAIL_SET_TOP_INT_EN_; 2080 2081 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 2082 tx_tail_flags | tx->frame_tail); 2083 tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS; 2084 } 2085 2086 static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx, 2087 struct sk_buff *skb) 2088 { 2089 int required_number_of_descriptors = 0; 2090 unsigned int start_frame_length = 0; 2091 netdev_tx_t retval = NETDEV_TX_OK; 2092 unsigned int frame_length = 0; 2093 unsigned int head_length = 0; 2094 unsigned long irq_flags = 0; 2095 bool do_timestamp = false; 2096 bool ignore_sync = false; 2097 struct netdev_queue *txq; 2098 int nr_frags = 0; 2099 bool gso = false; 2100 int j; 2101 2102 required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb); 2103 2104 spin_lock_irqsave(&tx->ring_lock, irq_flags); 2105 if (required_number_of_descriptors > 2106 lan743x_tx_get_avail_desc(tx)) { 2107 if (required_number_of_descriptors > (tx->ring_size - 1)) { 2108 dev_kfree_skb_irq(skb); 2109 } else { 2110 /* save how many descriptors we needed to restart the queue */ 2111 tx->rqd_descriptors = required_number_of_descriptors; 2112 retval = NETDEV_TX_BUSY; 2113 txq = netdev_get_tx_queue(tx->adapter->netdev, 2114 tx->channel_number); 2115 netif_tx_stop_queue(txq); 2116 } 2117 goto unlock; 2118 } 2119 2120 /* space available, transmit skb */ 2121 if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 2122 (tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) && 2123 (lan743x_ptp_request_tx_timestamp(tx->adapter))) { 2124 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 2125 do_timestamp = true; 2126 if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC) 2127 ignore_sync = true; 2128 } 2129 head_length = skb_headlen(skb); 2130 frame_length = skb_pagelen(skb); 2131 nr_frags = skb_shinfo(skb)->nr_frags; 2132 start_frame_length = frame_length; 2133 gso = skb_is_gso(skb); 2134 if (gso) { 2135 start_frame_length = max(skb_shinfo(skb)->gso_size, 2136 (unsigned short)8); 2137 } 2138 2139 if (lan743x_tx_frame_start(tx, 2140 skb->data, head_length, 2141 start_frame_length, 2142 do_timestamp, 2143 skb->ip_summed == CHECKSUM_PARTIAL)) { 2144 dev_kfree_skb_irq(skb); 2145 goto unlock; 2146 } 2147 tx->frame_count++; 2148 2149 if (gso) 2150 lan743x_tx_frame_add_lso(tx, frame_length, nr_frags); 2151 2152 if (nr_frags <= 0) 2153 goto finish; 2154 2155 for (j = 0; j < nr_frags; j++) { 2156 const skb_frag_t *frag = &(skb_shinfo(skb)->frags[j]); 2157 2158 if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) { 2159 /* upon error no need to call 2160 * lan743x_tx_frame_end 2161 * frame assembler clean up was performed inside 2162 * lan743x_tx_frame_add_fragment 2163 */ 2164 dev_kfree_skb_irq(skb); 2165 goto unlock; 2166 } 2167 } 2168 2169 finish: 2170 lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync); 2171 2172 unlock: 2173 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 2174 return retval; 2175 } 2176 2177 static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight) 2178 { 2179 struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi); 2180 struct lan743x_adapter *adapter = tx->adapter; 2181 unsigned long irq_flags = 0; 2182 struct netdev_queue *txq; 2183 u32 ioc_bit = 0; 2184 2185 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number); 2186 lan743x_csr_read(adapter, DMAC_INT_STS); 2187 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) 2188 lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit); 2189 spin_lock_irqsave(&tx->ring_lock, irq_flags); 2190 2191 /* clean up tx ring */ 2192 lan743x_tx_release_completed_descriptors(tx); 2193 txq = netdev_get_tx_queue(adapter->netdev, tx->channel_number); 2194 if (netif_tx_queue_stopped(txq)) { 2195 if (tx->rqd_descriptors) { 2196 if (tx->rqd_descriptors <= 2197 lan743x_tx_get_avail_desc(tx)) { 2198 tx->rqd_descriptors = 0; 2199 netif_tx_wake_queue(txq); 2200 } 2201 } else { 2202 netif_tx_wake_queue(txq); 2203 } 2204 } 2205 spin_unlock_irqrestore(&tx->ring_lock, irq_flags); 2206 2207 if (!napi_complete(napi)) 2208 goto done; 2209 2210 /* enable isr */ 2211 lan743x_csr_write(adapter, INT_EN_SET, 2212 INT_BIT_DMA_TX_(tx->channel_number)); 2213 lan743x_csr_read(adapter, INT_STS); 2214 2215 done: 2216 return 0; 2217 } 2218 2219 static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx) 2220 { 2221 if (tx->head_cpu_ptr) { 2222 dma_free_coherent(&tx->adapter->pdev->dev, 2223 sizeof(*tx->head_cpu_ptr), tx->head_cpu_ptr, 2224 tx->head_dma_ptr); 2225 tx->head_cpu_ptr = NULL; 2226 tx->head_dma_ptr = 0; 2227 } 2228 kfree(tx->buffer_info); 2229 tx->buffer_info = NULL; 2230 2231 if (tx->ring_cpu_ptr) { 2232 dma_free_coherent(&tx->adapter->pdev->dev, 2233 tx->ring_allocation_size, tx->ring_cpu_ptr, 2234 tx->ring_dma_ptr); 2235 tx->ring_allocation_size = 0; 2236 tx->ring_cpu_ptr = NULL; 2237 tx->ring_dma_ptr = 0; 2238 } 2239 tx->ring_size = 0; 2240 } 2241 2242 static int lan743x_tx_ring_init(struct lan743x_tx *tx) 2243 { 2244 size_t ring_allocation_size = 0; 2245 void *cpu_ptr = NULL; 2246 dma_addr_t dma_ptr; 2247 int ret = -ENOMEM; 2248 2249 tx->ring_size = LAN743X_TX_RING_SIZE; 2250 if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) { 2251 ret = -EINVAL; 2252 goto cleanup; 2253 } 2254 if (dma_set_mask_and_coherent(&tx->adapter->pdev->dev, 2255 DMA_BIT_MASK(64))) { 2256 dev_warn(&tx->adapter->pdev->dev, 2257 "lan743x_: No suitable DMA available\n"); 2258 ret = -ENOMEM; 2259 goto cleanup; 2260 } 2261 ring_allocation_size = ALIGN(tx->ring_size * 2262 sizeof(struct lan743x_tx_descriptor), 2263 PAGE_SIZE); 2264 dma_ptr = 0; 2265 cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev, 2266 ring_allocation_size, &dma_ptr, GFP_KERNEL); 2267 if (!cpu_ptr) { 2268 ret = -ENOMEM; 2269 goto cleanup; 2270 } 2271 2272 tx->ring_allocation_size = ring_allocation_size; 2273 tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr; 2274 tx->ring_dma_ptr = dma_ptr; 2275 2276 cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL); 2277 if (!cpu_ptr) { 2278 ret = -ENOMEM; 2279 goto cleanup; 2280 } 2281 tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr; 2282 dma_ptr = 0; 2283 cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev, 2284 sizeof(*tx->head_cpu_ptr), &dma_ptr, 2285 GFP_KERNEL); 2286 if (!cpu_ptr) { 2287 ret = -ENOMEM; 2288 goto cleanup; 2289 } 2290 2291 tx->head_cpu_ptr = cpu_ptr; 2292 tx->head_dma_ptr = dma_ptr; 2293 if (tx->head_dma_ptr & 0x3) { 2294 ret = -ENOMEM; 2295 goto cleanup; 2296 } 2297 2298 return 0; 2299 2300 cleanup: 2301 lan743x_tx_ring_cleanup(tx); 2302 return ret; 2303 } 2304 2305 static void lan743x_tx_close(struct lan743x_tx *tx) 2306 { 2307 struct lan743x_adapter *adapter = tx->adapter; 2308 2309 lan743x_csr_write(adapter, 2310 DMAC_CMD, 2311 DMAC_CMD_STOP_T_(tx->channel_number)); 2312 lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number); 2313 2314 lan743x_csr_write(adapter, 2315 DMAC_INT_EN_CLR, 2316 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 2317 lan743x_csr_write(adapter, INT_EN_CLR, 2318 INT_BIT_DMA_TX_(tx->channel_number)); 2319 napi_disable(&tx->napi); 2320 netif_napi_del(&tx->napi); 2321 2322 lan743x_csr_write(adapter, FCT_TX_CTL, 2323 FCT_TX_CTL_DIS_(tx->channel_number)); 2324 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 2325 FCT_TX_CTL_EN_(tx->channel_number), 2326 0, 1000, 20000, 100); 2327 2328 lan743x_tx_release_all_descriptors(tx); 2329 2330 tx->rqd_descriptors = 0; 2331 2332 lan743x_tx_ring_cleanup(tx); 2333 } 2334 2335 static int lan743x_tx_open(struct lan743x_tx *tx) 2336 { 2337 struct lan743x_adapter *adapter = NULL; 2338 u32 data = 0; 2339 int ret; 2340 2341 adapter = tx->adapter; 2342 ret = lan743x_tx_ring_init(tx); 2343 if (ret) 2344 return ret; 2345 2346 /* initialize fifo */ 2347 lan743x_csr_write(adapter, FCT_TX_CTL, 2348 FCT_TX_CTL_RESET_(tx->channel_number)); 2349 lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL, 2350 FCT_TX_CTL_RESET_(tx->channel_number), 2351 0, 1000, 20000, 100); 2352 2353 /* enable fifo */ 2354 lan743x_csr_write(adapter, FCT_TX_CTL, 2355 FCT_TX_CTL_EN_(tx->channel_number)); 2356 2357 /* reset tx channel */ 2358 lan743x_csr_write(adapter, DMAC_CMD, 2359 DMAC_CMD_TX_SWR_(tx->channel_number)); 2360 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 2361 DMAC_CMD_TX_SWR_(tx->channel_number), 2362 0, 1000, 20000, 100); 2363 2364 /* Write TX_BASE_ADDR */ 2365 lan743x_csr_write(adapter, 2366 TX_BASE_ADDRH(tx->channel_number), 2367 DMA_ADDR_HIGH32(tx->ring_dma_ptr)); 2368 lan743x_csr_write(adapter, 2369 TX_BASE_ADDRL(tx->channel_number), 2370 DMA_ADDR_LOW32(tx->ring_dma_ptr)); 2371 2372 /* Write TX_CFG_B */ 2373 data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number)); 2374 data &= ~TX_CFG_B_TX_RING_LEN_MASK_; 2375 data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_); 2376 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 2377 data |= TX_CFG_B_TDMABL_512_; 2378 lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data); 2379 2380 /* Write TX_CFG_A */ 2381 data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_; 2382 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 2383 data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_; 2384 data |= TX_CFG_A_TX_PF_THRES_SET_(0x10); 2385 data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04); 2386 data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07); 2387 } 2388 lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data); 2389 2390 /* Write TX_HEAD_WRITEBACK_ADDR */ 2391 lan743x_csr_write(adapter, 2392 TX_HEAD_WRITEBACK_ADDRH(tx->channel_number), 2393 DMA_ADDR_HIGH32(tx->head_dma_ptr)); 2394 lan743x_csr_write(adapter, 2395 TX_HEAD_WRITEBACK_ADDRL(tx->channel_number), 2396 DMA_ADDR_LOW32(tx->head_dma_ptr)); 2397 2398 /* set last head */ 2399 tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number)); 2400 2401 /* write TX_TAIL */ 2402 tx->last_tail = 0; 2403 lan743x_csr_write(adapter, TX_TAIL(tx->channel_number), 2404 (u32)(tx->last_tail)); 2405 tx->vector_flags = lan743x_intr_get_vector_flags(adapter, 2406 INT_BIT_DMA_TX_ 2407 (tx->channel_number)); 2408 netif_napi_add_tx_weight(adapter->netdev, 2409 &tx->napi, lan743x_tx_napi_poll, 2410 NAPI_POLL_WEIGHT); 2411 napi_enable(&tx->napi); 2412 2413 data = 0; 2414 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 2415 data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_; 2416 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 2417 data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_; 2418 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 2419 data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_; 2420 if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 2421 data |= TX_CFG_C_TX_INT_EN_R2C_; 2422 lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data); 2423 2424 if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)) 2425 lan743x_csr_write(adapter, INT_EN_SET, 2426 INT_BIT_DMA_TX_(tx->channel_number)); 2427 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 2428 DMAC_INT_BIT_TX_IOC_(tx->channel_number)); 2429 2430 /* start dmac channel */ 2431 lan743x_csr_write(adapter, DMAC_CMD, 2432 DMAC_CMD_START_T_(tx->channel_number)); 2433 return 0; 2434 } 2435 2436 static int lan743x_rx_next_index(struct lan743x_rx *rx, int index) 2437 { 2438 return ((++index) % rx->ring_size); 2439 } 2440 2441 static void lan743x_rx_update_tail(struct lan743x_rx *rx, int index) 2442 { 2443 /* update the tail once per 8 descriptors */ 2444 if ((index & 7) == 7) 2445 lan743x_csr_write(rx->adapter, RX_TAIL(rx->channel_number), 2446 index); 2447 } 2448 2449 static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index, 2450 gfp_t gfp) 2451 { 2452 struct net_device *netdev = rx->adapter->netdev; 2453 struct device *dev = &rx->adapter->pdev->dev; 2454 struct lan743x_rx_buffer_info *buffer_info; 2455 unsigned int buffer_length, used_length; 2456 struct lan743x_rx_descriptor *descriptor; 2457 struct sk_buff *skb; 2458 dma_addr_t dma_ptr; 2459 2460 buffer_length = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + RX_HEAD_PADDING; 2461 2462 descriptor = &rx->ring_cpu_ptr[index]; 2463 buffer_info = &rx->buffer_info[index]; 2464 skb = __netdev_alloc_skb(netdev, buffer_length, gfp); 2465 if (!skb) 2466 return -ENOMEM; 2467 dma_ptr = dma_map_single(dev, skb->data, buffer_length, DMA_FROM_DEVICE); 2468 if (dma_mapping_error(dev, dma_ptr)) { 2469 dev_kfree_skb_any(skb); 2470 return -ENOMEM; 2471 } 2472 if (buffer_info->dma_ptr) { 2473 /* sync used area of buffer only */ 2474 if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_) 2475 /* frame length is valid only if LS bit is set. 2476 * it's a safe upper bound for the used area in this 2477 * buffer. 2478 */ 2479 used_length = min(RX_DESC_DATA0_FRAME_LENGTH_GET_ 2480 (le32_to_cpu(descriptor->data0)), 2481 buffer_info->buffer_length); 2482 else 2483 used_length = buffer_info->buffer_length; 2484 dma_sync_single_for_cpu(dev, buffer_info->dma_ptr, 2485 used_length, 2486 DMA_FROM_DEVICE); 2487 dma_unmap_single_attrs(dev, buffer_info->dma_ptr, 2488 buffer_info->buffer_length, 2489 DMA_FROM_DEVICE, 2490 DMA_ATTR_SKIP_CPU_SYNC); 2491 } 2492 2493 buffer_info->skb = skb; 2494 buffer_info->dma_ptr = dma_ptr; 2495 buffer_info->buffer_length = buffer_length; 2496 descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr)); 2497 descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr)); 2498 descriptor->data3 = 0; 2499 descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ | 2500 (buffer_length & RX_DESC_DATA0_BUF_LENGTH_MASK_))); 2501 lan743x_rx_update_tail(rx, index); 2502 2503 return 0; 2504 } 2505 2506 static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index) 2507 { 2508 struct lan743x_rx_buffer_info *buffer_info; 2509 struct lan743x_rx_descriptor *descriptor; 2510 2511 descriptor = &rx->ring_cpu_ptr[index]; 2512 buffer_info = &rx->buffer_info[index]; 2513 2514 descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr)); 2515 descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr)); 2516 descriptor->data3 = 0; 2517 descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ | 2518 ((buffer_info->buffer_length) & 2519 RX_DESC_DATA0_BUF_LENGTH_MASK_))); 2520 lan743x_rx_update_tail(rx, index); 2521 } 2522 2523 static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index) 2524 { 2525 struct lan743x_rx_buffer_info *buffer_info; 2526 struct lan743x_rx_descriptor *descriptor; 2527 2528 descriptor = &rx->ring_cpu_ptr[index]; 2529 buffer_info = &rx->buffer_info[index]; 2530 2531 memset(descriptor, 0, sizeof(*descriptor)); 2532 2533 if (buffer_info->dma_ptr) { 2534 dma_unmap_single(&rx->adapter->pdev->dev, 2535 buffer_info->dma_ptr, 2536 buffer_info->buffer_length, 2537 DMA_FROM_DEVICE); 2538 buffer_info->dma_ptr = 0; 2539 } 2540 2541 if (buffer_info->skb) { 2542 dev_kfree_skb(buffer_info->skb); 2543 buffer_info->skb = NULL; 2544 } 2545 2546 memset(buffer_info, 0, sizeof(*buffer_info)); 2547 } 2548 2549 static struct sk_buff * 2550 lan743x_rx_trim_skb(struct sk_buff *skb, int frame_length) 2551 { 2552 if (skb_linearize(skb)) { 2553 dev_kfree_skb_irq(skb); 2554 return NULL; 2555 } 2556 frame_length = max_t(int, 0, frame_length - ETH_FCS_LEN); 2557 if (skb->len > frame_length) { 2558 skb->tail -= skb->len - frame_length; 2559 skb->len = frame_length; 2560 } 2561 return skb; 2562 } 2563 2564 static int lan743x_rx_process_buffer(struct lan743x_rx *rx) 2565 { 2566 int current_head_index = le32_to_cpu(*rx->head_cpu_ptr); 2567 struct lan743x_rx_descriptor *descriptor, *desc_ext; 2568 struct net_device *netdev = rx->adapter->netdev; 2569 int result = RX_PROCESS_RESULT_NOTHING_TO_DO; 2570 struct lan743x_rx_buffer_info *buffer_info; 2571 int frame_length, buffer_length; 2572 bool is_ice, is_tce, is_icsm; 2573 int extension_index = -1; 2574 bool is_last, is_first; 2575 struct sk_buff *skb; 2576 2577 if (current_head_index < 0 || current_head_index >= rx->ring_size) 2578 goto done; 2579 2580 if (rx->last_head < 0 || rx->last_head >= rx->ring_size) 2581 goto done; 2582 2583 if (rx->last_head == current_head_index) 2584 goto done; 2585 2586 descriptor = &rx->ring_cpu_ptr[rx->last_head]; 2587 if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_OWN_) 2588 goto done; 2589 buffer_info = &rx->buffer_info[rx->last_head]; 2590 2591 is_last = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_; 2592 is_first = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_FS_; 2593 2594 if (is_last && le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_EXT_) { 2595 /* extension is expected to follow */ 2596 int index = lan743x_rx_next_index(rx, rx->last_head); 2597 2598 if (index == current_head_index) 2599 /* extension not yet available */ 2600 goto done; 2601 desc_ext = &rx->ring_cpu_ptr[index]; 2602 if (le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_OWN_) 2603 /* extension not yet available */ 2604 goto done; 2605 if (!(le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_EXT_)) 2606 goto move_forward; 2607 extension_index = index; 2608 } 2609 2610 /* Only the last buffer in a multi-buffer frame contains the total frame 2611 * length. The chip occasionally sends more buffers than strictly 2612 * required to reach the total frame length. 2613 * Handle this by adding all buffers to the skb in their entirety. 2614 * Once the real frame length is known, trim the skb. 2615 */ 2616 frame_length = 2617 RX_DESC_DATA0_FRAME_LENGTH_GET_(le32_to_cpu(descriptor->data0)); 2618 buffer_length = buffer_info->buffer_length; 2619 is_ice = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_ICE_; 2620 is_tce = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_TCE_; 2621 is_icsm = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_ICSM_; 2622 2623 netdev_dbg(netdev, "%s%schunk: %d/%d", 2624 is_first ? "first " : " ", 2625 is_last ? "last " : " ", 2626 frame_length, buffer_length); 2627 2628 /* save existing skb, allocate new skb and map to dma */ 2629 skb = buffer_info->skb; 2630 if (lan743x_rx_init_ring_element(rx, rx->last_head, 2631 GFP_ATOMIC | GFP_DMA)) { 2632 /* failed to allocate next skb. 2633 * Memory is very low. 2634 * Drop this packet and reuse buffer. 2635 */ 2636 lan743x_rx_reuse_ring_element(rx, rx->last_head); 2637 /* drop packet that was being assembled */ 2638 dev_kfree_skb_irq(rx->skb_head); 2639 rx->skb_head = NULL; 2640 goto process_extension; 2641 } 2642 2643 /* add buffers to skb via skb->frag_list */ 2644 if (is_first) { 2645 skb_reserve(skb, RX_HEAD_PADDING); 2646 skb_put(skb, buffer_length - RX_HEAD_PADDING); 2647 if (rx->skb_head) 2648 dev_kfree_skb_irq(rx->skb_head); 2649 rx->skb_head = skb; 2650 } else if (rx->skb_head) { 2651 skb_put(skb, buffer_length); 2652 if (skb_shinfo(rx->skb_head)->frag_list) 2653 rx->skb_tail->next = skb; 2654 else 2655 skb_shinfo(rx->skb_head)->frag_list = skb; 2656 rx->skb_tail = skb; 2657 rx->skb_head->len += skb->len; 2658 rx->skb_head->data_len += skb->len; 2659 rx->skb_head->truesize += skb->truesize; 2660 } else { 2661 /* packet to assemble has already been dropped because one or 2662 * more of its buffers could not be allocated 2663 */ 2664 netdev_dbg(netdev, "drop buffer intended for dropped packet"); 2665 dev_kfree_skb_irq(skb); 2666 } 2667 2668 process_extension: 2669 if (extension_index >= 0) { 2670 u32 ts_sec; 2671 u32 ts_nsec; 2672 2673 ts_sec = le32_to_cpu(desc_ext->data1); 2674 ts_nsec = (le32_to_cpu(desc_ext->data2) & 2675 RX_DESC_DATA2_TS_NS_MASK_); 2676 if (rx->skb_head) 2677 skb_hwtstamps(rx->skb_head)->hwtstamp = 2678 ktime_set(ts_sec, ts_nsec); 2679 lan743x_rx_reuse_ring_element(rx, extension_index); 2680 rx->last_head = extension_index; 2681 netdev_dbg(netdev, "process extension"); 2682 } 2683 2684 if (is_last && rx->skb_head) 2685 rx->skb_head = lan743x_rx_trim_skb(rx->skb_head, frame_length); 2686 2687 if (is_last && rx->skb_head) { 2688 rx->skb_head->protocol = eth_type_trans(rx->skb_head, 2689 rx->adapter->netdev); 2690 if (rx->adapter->netdev->features & NETIF_F_RXCSUM) { 2691 if (!is_ice && !is_tce && !is_icsm) 2692 skb->ip_summed = CHECKSUM_UNNECESSARY; 2693 } 2694 netdev_dbg(netdev, "sending %d byte frame to OS", 2695 rx->skb_head->len); 2696 napi_gro_receive(&rx->napi, rx->skb_head); 2697 rx->skb_head = NULL; 2698 } 2699 2700 move_forward: 2701 /* push tail and head forward */ 2702 rx->last_tail = rx->last_head; 2703 rx->last_head = lan743x_rx_next_index(rx, rx->last_head); 2704 result = RX_PROCESS_RESULT_BUFFER_RECEIVED; 2705 done: 2706 return result; 2707 } 2708 2709 static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight) 2710 { 2711 struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi); 2712 struct lan743x_adapter *adapter = rx->adapter; 2713 int result = RX_PROCESS_RESULT_NOTHING_TO_DO; 2714 u32 rx_tail_flags = 0; 2715 int count; 2716 2717 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) { 2718 /* clear int status bit before reading packet */ 2719 lan743x_csr_write(adapter, DMAC_INT_STS, 2720 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2721 } 2722 for (count = 0; count < weight; count++) { 2723 result = lan743x_rx_process_buffer(rx); 2724 if (result == RX_PROCESS_RESULT_NOTHING_TO_DO) 2725 break; 2726 } 2727 rx->frame_count += count; 2728 if (count == weight || result == RX_PROCESS_RESULT_BUFFER_RECEIVED) 2729 return weight; 2730 2731 if (!napi_complete_done(napi, count)) 2732 return count; 2733 2734 /* re-arm interrupts, must write to rx tail on some chip variants */ 2735 if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET) 2736 rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_; 2737 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) { 2738 rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_; 2739 } else { 2740 lan743x_csr_write(adapter, INT_EN_SET, 2741 INT_BIT_DMA_RX_(rx->channel_number)); 2742 } 2743 2744 if (rx_tail_flags) 2745 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2746 rx_tail_flags | rx->last_tail); 2747 2748 return count; 2749 } 2750 2751 static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx) 2752 { 2753 if (rx->buffer_info && rx->ring_cpu_ptr) { 2754 int index; 2755 2756 for (index = 0; index < rx->ring_size; index++) 2757 lan743x_rx_release_ring_element(rx, index); 2758 } 2759 2760 if (rx->head_cpu_ptr) { 2761 dma_free_coherent(&rx->adapter->pdev->dev, 2762 sizeof(*rx->head_cpu_ptr), rx->head_cpu_ptr, 2763 rx->head_dma_ptr); 2764 rx->head_cpu_ptr = NULL; 2765 rx->head_dma_ptr = 0; 2766 } 2767 2768 kfree(rx->buffer_info); 2769 rx->buffer_info = NULL; 2770 2771 if (rx->ring_cpu_ptr) { 2772 dma_free_coherent(&rx->adapter->pdev->dev, 2773 rx->ring_allocation_size, rx->ring_cpu_ptr, 2774 rx->ring_dma_ptr); 2775 rx->ring_allocation_size = 0; 2776 rx->ring_cpu_ptr = NULL; 2777 rx->ring_dma_ptr = 0; 2778 } 2779 2780 rx->ring_size = 0; 2781 rx->last_head = 0; 2782 } 2783 2784 static int lan743x_rx_ring_init(struct lan743x_rx *rx) 2785 { 2786 size_t ring_allocation_size = 0; 2787 dma_addr_t dma_ptr = 0; 2788 void *cpu_ptr = NULL; 2789 int ret = -ENOMEM; 2790 int index = 0; 2791 2792 rx->ring_size = LAN743X_RX_RING_SIZE; 2793 if (rx->ring_size <= 1) { 2794 ret = -EINVAL; 2795 goto cleanup; 2796 } 2797 if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) { 2798 ret = -EINVAL; 2799 goto cleanup; 2800 } 2801 if (dma_set_mask_and_coherent(&rx->adapter->pdev->dev, 2802 DMA_BIT_MASK(64))) { 2803 dev_warn(&rx->adapter->pdev->dev, 2804 "lan743x_: No suitable DMA available\n"); 2805 ret = -ENOMEM; 2806 goto cleanup; 2807 } 2808 ring_allocation_size = ALIGN(rx->ring_size * 2809 sizeof(struct lan743x_rx_descriptor), 2810 PAGE_SIZE); 2811 dma_ptr = 0; 2812 cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev, 2813 ring_allocation_size, &dma_ptr, GFP_KERNEL); 2814 if (!cpu_ptr) { 2815 ret = -ENOMEM; 2816 goto cleanup; 2817 } 2818 rx->ring_allocation_size = ring_allocation_size; 2819 rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr; 2820 rx->ring_dma_ptr = dma_ptr; 2821 2822 cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info), 2823 GFP_KERNEL); 2824 if (!cpu_ptr) { 2825 ret = -ENOMEM; 2826 goto cleanup; 2827 } 2828 rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr; 2829 dma_ptr = 0; 2830 cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev, 2831 sizeof(*rx->head_cpu_ptr), &dma_ptr, 2832 GFP_KERNEL); 2833 if (!cpu_ptr) { 2834 ret = -ENOMEM; 2835 goto cleanup; 2836 } 2837 2838 rx->head_cpu_ptr = cpu_ptr; 2839 rx->head_dma_ptr = dma_ptr; 2840 if (rx->head_dma_ptr & 0x3) { 2841 ret = -ENOMEM; 2842 goto cleanup; 2843 } 2844 2845 rx->last_head = 0; 2846 for (index = 0; index < rx->ring_size; index++) { 2847 ret = lan743x_rx_init_ring_element(rx, index, GFP_KERNEL); 2848 if (ret) 2849 goto cleanup; 2850 } 2851 return 0; 2852 2853 cleanup: 2854 netif_warn(rx->adapter, ifup, rx->adapter->netdev, 2855 "Error allocating memory for LAN743x\n"); 2856 2857 lan743x_rx_ring_cleanup(rx); 2858 return ret; 2859 } 2860 2861 static void lan743x_rx_close(struct lan743x_rx *rx) 2862 { 2863 struct lan743x_adapter *adapter = rx->adapter; 2864 2865 lan743x_csr_write(adapter, FCT_RX_CTL, 2866 FCT_RX_CTL_DIS_(rx->channel_number)); 2867 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2868 FCT_RX_CTL_EN_(rx->channel_number), 2869 0, 1000, 20000, 100); 2870 2871 lan743x_csr_write(adapter, DMAC_CMD, 2872 DMAC_CMD_STOP_R_(rx->channel_number)); 2873 lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number); 2874 2875 lan743x_csr_write(adapter, DMAC_INT_EN_CLR, 2876 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2877 lan743x_csr_write(adapter, INT_EN_CLR, 2878 INT_BIT_DMA_RX_(rx->channel_number)); 2879 napi_disable(&rx->napi); 2880 2881 netif_napi_del(&rx->napi); 2882 2883 lan743x_rx_ring_cleanup(rx); 2884 } 2885 2886 static int lan743x_rx_open(struct lan743x_rx *rx) 2887 { 2888 struct lan743x_adapter *adapter = rx->adapter; 2889 u32 data = 0; 2890 int ret; 2891 2892 rx->frame_count = 0; 2893 ret = lan743x_rx_ring_init(rx); 2894 if (ret) 2895 goto return_error; 2896 2897 netif_napi_add(adapter->netdev, &rx->napi, lan743x_rx_napi_poll); 2898 2899 lan743x_csr_write(adapter, DMAC_CMD, 2900 DMAC_CMD_RX_SWR_(rx->channel_number)); 2901 lan743x_csr_wait_for_bit(adapter, DMAC_CMD, 2902 DMAC_CMD_RX_SWR_(rx->channel_number), 2903 0, 1000, 20000, 100); 2904 2905 /* set ring base address */ 2906 lan743x_csr_write(adapter, 2907 RX_BASE_ADDRH(rx->channel_number), 2908 DMA_ADDR_HIGH32(rx->ring_dma_ptr)); 2909 lan743x_csr_write(adapter, 2910 RX_BASE_ADDRL(rx->channel_number), 2911 DMA_ADDR_LOW32(rx->ring_dma_ptr)); 2912 2913 /* set rx write back address */ 2914 lan743x_csr_write(adapter, 2915 RX_HEAD_WRITEBACK_ADDRH(rx->channel_number), 2916 DMA_ADDR_HIGH32(rx->head_dma_ptr)); 2917 lan743x_csr_write(adapter, 2918 RX_HEAD_WRITEBACK_ADDRL(rx->channel_number), 2919 DMA_ADDR_LOW32(rx->head_dma_ptr)); 2920 data = RX_CFG_A_RX_HP_WB_EN_; 2921 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) { 2922 data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ | 2923 RX_CFG_A_RX_WB_THRES_SET_(0x7) | 2924 RX_CFG_A_RX_PF_THRES_SET_(16) | 2925 RX_CFG_A_RX_PF_PRI_THRES_SET_(4)); 2926 } 2927 2928 /* set RX_CFG_A */ 2929 lan743x_csr_write(adapter, 2930 RX_CFG_A(rx->channel_number), data); 2931 2932 /* set RX_CFG_B */ 2933 data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number)); 2934 data &= ~RX_CFG_B_RX_PAD_MASK_; 2935 if (!RX_HEAD_PADDING) 2936 data |= RX_CFG_B_RX_PAD_0_; 2937 else 2938 data |= RX_CFG_B_RX_PAD_2_; 2939 data &= ~RX_CFG_B_RX_RING_LEN_MASK_; 2940 data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_); 2941 data |= RX_CFG_B_TS_ALL_RX_; 2942 if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) 2943 data |= RX_CFG_B_RDMABL_512_; 2944 2945 lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data); 2946 rx->vector_flags = lan743x_intr_get_vector_flags(adapter, 2947 INT_BIT_DMA_RX_ 2948 (rx->channel_number)); 2949 2950 /* set RX_CFG_C */ 2951 data = 0; 2952 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR) 2953 data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_; 2954 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR) 2955 data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_; 2956 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C) 2957 data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_; 2958 if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C) 2959 data |= RX_CFG_C_RX_INT_EN_R2C_; 2960 lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data); 2961 2962 rx->last_tail = ((u32)(rx->ring_size - 1)); 2963 lan743x_csr_write(adapter, RX_TAIL(rx->channel_number), 2964 rx->last_tail); 2965 rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number)); 2966 if (rx->last_head) { 2967 ret = -EIO; 2968 goto napi_delete; 2969 } 2970 2971 napi_enable(&rx->napi); 2972 2973 lan743x_csr_write(adapter, INT_EN_SET, 2974 INT_BIT_DMA_RX_(rx->channel_number)); 2975 lan743x_csr_write(adapter, DMAC_INT_STS, 2976 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2977 lan743x_csr_write(adapter, DMAC_INT_EN_SET, 2978 DMAC_INT_BIT_RXFRM_(rx->channel_number)); 2979 lan743x_csr_write(adapter, DMAC_CMD, 2980 DMAC_CMD_START_R_(rx->channel_number)); 2981 2982 /* initialize fifo */ 2983 lan743x_csr_write(adapter, FCT_RX_CTL, 2984 FCT_RX_CTL_RESET_(rx->channel_number)); 2985 lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL, 2986 FCT_RX_CTL_RESET_(rx->channel_number), 2987 0, 1000, 20000, 100); 2988 lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number), 2989 FCT_FLOW_CTL_REQ_EN_ | 2990 FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) | 2991 FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA)); 2992 2993 /* enable fifo */ 2994 lan743x_csr_write(adapter, FCT_RX_CTL, 2995 FCT_RX_CTL_EN_(rx->channel_number)); 2996 return 0; 2997 2998 napi_delete: 2999 netif_napi_del(&rx->napi); 3000 lan743x_rx_ring_cleanup(rx); 3001 3002 return_error: 3003 return ret; 3004 } 3005 3006 static int lan743x_netdev_close(struct net_device *netdev) 3007 { 3008 struct lan743x_adapter *adapter = netdev_priv(netdev); 3009 int index; 3010 3011 for (index = 0; index < adapter->used_tx_channels; index++) 3012 lan743x_tx_close(&adapter->tx[index]); 3013 3014 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) 3015 lan743x_rx_close(&adapter->rx[index]); 3016 3017 lan743x_ptp_close(adapter); 3018 3019 lan743x_phy_close(adapter); 3020 3021 lan743x_mac_close(adapter); 3022 3023 lan743x_intr_close(adapter); 3024 3025 return 0; 3026 } 3027 3028 static int lan743x_netdev_open(struct net_device *netdev) 3029 { 3030 struct lan743x_adapter *adapter = netdev_priv(netdev); 3031 int index; 3032 int ret; 3033 3034 ret = lan743x_intr_open(adapter); 3035 if (ret) 3036 goto return_error; 3037 3038 ret = lan743x_mac_open(adapter); 3039 if (ret) 3040 goto close_intr; 3041 3042 ret = lan743x_phy_open(adapter); 3043 if (ret) 3044 goto close_mac; 3045 3046 ret = lan743x_ptp_open(adapter); 3047 if (ret) 3048 goto close_phy; 3049 3050 lan743x_rfe_open(adapter); 3051 3052 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 3053 ret = lan743x_rx_open(&adapter->rx[index]); 3054 if (ret) 3055 goto close_rx; 3056 } 3057 3058 for (index = 0; index < adapter->used_tx_channels; index++) { 3059 ret = lan743x_tx_open(&adapter->tx[index]); 3060 if (ret) 3061 goto close_tx; 3062 } 3063 return 0; 3064 3065 close_tx: 3066 for (index = 0; index < adapter->used_tx_channels; index++) { 3067 if (adapter->tx[index].ring_cpu_ptr) 3068 lan743x_tx_close(&adapter->tx[index]); 3069 } 3070 3071 close_rx: 3072 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 3073 if (adapter->rx[index].ring_cpu_ptr) 3074 lan743x_rx_close(&adapter->rx[index]); 3075 } 3076 lan743x_ptp_close(adapter); 3077 3078 close_phy: 3079 lan743x_phy_close(adapter); 3080 3081 close_mac: 3082 lan743x_mac_close(adapter); 3083 3084 close_intr: 3085 lan743x_intr_close(adapter); 3086 3087 return_error: 3088 netif_warn(adapter, ifup, adapter->netdev, 3089 "Error opening LAN743x\n"); 3090 return ret; 3091 } 3092 3093 static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb, 3094 struct net_device *netdev) 3095 { 3096 struct lan743x_adapter *adapter = netdev_priv(netdev); 3097 u8 ch = 0; 3098 3099 if (adapter->is_pci11x1x) 3100 ch = skb->queue_mapping % PCI11X1X_USED_TX_CHANNELS; 3101 3102 return lan743x_tx_xmit_frame(&adapter->tx[ch], skb); 3103 } 3104 3105 static int lan743x_netdev_ioctl(struct net_device *netdev, 3106 struct ifreq *ifr, int cmd) 3107 { 3108 if (!netif_running(netdev)) 3109 return -EINVAL; 3110 if (cmd == SIOCSHWTSTAMP) 3111 return lan743x_ptp_ioctl(netdev, ifr, cmd); 3112 return phy_mii_ioctl(netdev->phydev, ifr, cmd); 3113 } 3114 3115 static void lan743x_netdev_set_multicast(struct net_device *netdev) 3116 { 3117 struct lan743x_adapter *adapter = netdev_priv(netdev); 3118 3119 lan743x_rfe_set_multicast(adapter); 3120 } 3121 3122 static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu) 3123 { 3124 struct lan743x_adapter *adapter = netdev_priv(netdev); 3125 int ret = 0; 3126 3127 ret = lan743x_mac_set_mtu(adapter, new_mtu); 3128 if (!ret) 3129 netdev->mtu = new_mtu; 3130 return ret; 3131 } 3132 3133 static void lan743x_netdev_get_stats64(struct net_device *netdev, 3134 struct rtnl_link_stats64 *stats) 3135 { 3136 struct lan743x_adapter *adapter = netdev_priv(netdev); 3137 3138 stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES); 3139 stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES); 3140 stats->rx_bytes = lan743x_csr_read(adapter, 3141 STAT_RX_UNICAST_BYTE_COUNT) + 3142 lan743x_csr_read(adapter, 3143 STAT_RX_BROADCAST_BYTE_COUNT) + 3144 lan743x_csr_read(adapter, 3145 STAT_RX_MULTICAST_BYTE_COUNT); 3146 stats->tx_bytes = lan743x_csr_read(adapter, 3147 STAT_TX_UNICAST_BYTE_COUNT) + 3148 lan743x_csr_read(adapter, 3149 STAT_TX_BROADCAST_BYTE_COUNT) + 3150 lan743x_csr_read(adapter, 3151 STAT_TX_MULTICAST_BYTE_COUNT); 3152 stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) + 3153 lan743x_csr_read(adapter, 3154 STAT_RX_ALIGNMENT_ERRORS) + 3155 lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) + 3156 lan743x_csr_read(adapter, 3157 STAT_RX_UNDERSIZE_FRAME_ERRORS) + 3158 lan743x_csr_read(adapter, 3159 STAT_RX_OVERSIZE_FRAME_ERRORS); 3160 stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) + 3161 lan743x_csr_read(adapter, 3162 STAT_TX_EXCESS_DEFERRAL_ERRORS) + 3163 lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS); 3164 stats->rx_dropped = lan743x_csr_read(adapter, 3165 STAT_RX_DROPPED_FRAMES); 3166 stats->tx_dropped = lan743x_csr_read(adapter, 3167 STAT_TX_EXCESSIVE_COLLISION); 3168 stats->multicast = lan743x_csr_read(adapter, 3169 STAT_RX_MULTICAST_FRAMES) + 3170 lan743x_csr_read(adapter, 3171 STAT_TX_MULTICAST_FRAMES); 3172 stats->collisions = lan743x_csr_read(adapter, 3173 STAT_TX_SINGLE_COLLISIONS) + 3174 lan743x_csr_read(adapter, 3175 STAT_TX_MULTIPLE_COLLISIONS) + 3176 lan743x_csr_read(adapter, 3177 STAT_TX_LATE_COLLISIONS); 3178 } 3179 3180 static int lan743x_netdev_set_mac_address(struct net_device *netdev, 3181 void *addr) 3182 { 3183 struct lan743x_adapter *adapter = netdev_priv(netdev); 3184 struct sockaddr *sock_addr = addr; 3185 int ret; 3186 3187 ret = eth_prepare_mac_addr_change(netdev, sock_addr); 3188 if (ret) 3189 return ret; 3190 eth_hw_addr_set(netdev, sock_addr->sa_data); 3191 lan743x_mac_set_address(adapter, sock_addr->sa_data); 3192 lan743x_rfe_update_mac_address(adapter); 3193 return 0; 3194 } 3195 3196 static const struct net_device_ops lan743x_netdev_ops = { 3197 .ndo_open = lan743x_netdev_open, 3198 .ndo_stop = lan743x_netdev_close, 3199 .ndo_start_xmit = lan743x_netdev_xmit_frame, 3200 .ndo_eth_ioctl = lan743x_netdev_ioctl, 3201 .ndo_set_rx_mode = lan743x_netdev_set_multicast, 3202 .ndo_change_mtu = lan743x_netdev_change_mtu, 3203 .ndo_get_stats64 = lan743x_netdev_get_stats64, 3204 .ndo_set_mac_address = lan743x_netdev_set_mac_address, 3205 }; 3206 3207 static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter) 3208 { 3209 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 3210 } 3211 3212 static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter) 3213 { 3214 mdiobus_unregister(adapter->mdiobus); 3215 } 3216 3217 static void lan743x_full_cleanup(struct lan743x_adapter *adapter) 3218 { 3219 unregister_netdev(adapter->netdev); 3220 3221 lan743x_mdiobus_cleanup(adapter); 3222 lan743x_hardware_cleanup(adapter); 3223 lan743x_pci_cleanup(adapter); 3224 } 3225 3226 static int lan743x_hardware_init(struct lan743x_adapter *adapter, 3227 struct pci_dev *pdev) 3228 { 3229 struct lan743x_tx *tx; 3230 int index; 3231 int ret; 3232 3233 adapter->is_pci11x1x = is_pci11x1x_chip(adapter); 3234 if (adapter->is_pci11x1x) { 3235 adapter->max_tx_channels = PCI11X1X_MAX_TX_CHANNELS; 3236 adapter->used_tx_channels = PCI11X1X_USED_TX_CHANNELS; 3237 adapter->max_vector_count = PCI11X1X_MAX_VECTOR_COUNT; 3238 pci11x1x_strap_get_status(adapter); 3239 spin_lock_init(&adapter->eth_syslock_spinlock); 3240 mutex_init(&adapter->sgmii_rw_lock); 3241 } else { 3242 adapter->max_tx_channels = LAN743X_MAX_TX_CHANNELS; 3243 adapter->used_tx_channels = LAN743X_USED_TX_CHANNELS; 3244 adapter->max_vector_count = LAN743X_MAX_VECTOR_COUNT; 3245 } 3246 3247 adapter->intr.irq = adapter->pdev->irq; 3248 lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF); 3249 3250 ret = lan743x_gpio_init(adapter); 3251 if (ret) 3252 return ret; 3253 3254 ret = lan743x_mac_init(adapter); 3255 if (ret) 3256 return ret; 3257 3258 ret = lan743x_phy_init(adapter); 3259 if (ret) 3260 return ret; 3261 3262 ret = lan743x_ptp_init(adapter); 3263 if (ret) 3264 return ret; 3265 3266 lan743x_rfe_update_mac_address(adapter); 3267 3268 ret = lan743x_dmac_init(adapter); 3269 if (ret) 3270 return ret; 3271 3272 for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) { 3273 adapter->rx[index].adapter = adapter; 3274 adapter->rx[index].channel_number = index; 3275 } 3276 3277 for (index = 0; index < adapter->used_tx_channels; index++) { 3278 tx = &adapter->tx[index]; 3279 tx->adapter = adapter; 3280 tx->channel_number = index; 3281 spin_lock_init(&tx->ring_lock); 3282 } 3283 3284 return 0; 3285 } 3286 3287 static int lan743x_mdiobus_init(struct lan743x_adapter *adapter) 3288 { 3289 u32 sgmii_ctl; 3290 int ret; 3291 3292 adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev); 3293 if (!(adapter->mdiobus)) { 3294 ret = -ENOMEM; 3295 goto return_error; 3296 } 3297 3298 adapter->mdiobus->priv = (void *)adapter; 3299 if (adapter->is_pci11x1x) { 3300 if (adapter->is_sgmii_en) { 3301 sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL); 3302 sgmii_ctl |= SGMII_CTL_SGMII_ENABLE_; 3303 sgmii_ctl &= ~SGMII_CTL_SGMII_POWER_DN_; 3304 lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl); 3305 netif_dbg(adapter, drv, adapter->netdev, 3306 "SGMII operation\n"); 3307 adapter->mdiobus->read = lan743x_mdiobus_read_c22; 3308 adapter->mdiobus->write = lan743x_mdiobus_write_c22; 3309 adapter->mdiobus->read_c45 = lan743x_mdiobus_read_c45; 3310 adapter->mdiobus->write_c45 = lan743x_mdiobus_write_c45; 3311 adapter->mdiobus->name = "lan743x-mdiobus-c45"; 3312 netif_dbg(adapter, drv, adapter->netdev, 3313 "lan743x-mdiobus-c45\n"); 3314 } else { 3315 sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL); 3316 sgmii_ctl &= ~SGMII_CTL_SGMII_ENABLE_; 3317 sgmii_ctl |= SGMII_CTL_SGMII_POWER_DN_; 3318 lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl); 3319 netif_dbg(adapter, drv, adapter->netdev, 3320 "RGMII operation\n"); 3321 // Only C22 support when RGMII I/F 3322 adapter->mdiobus->read = lan743x_mdiobus_read_c22; 3323 adapter->mdiobus->write = lan743x_mdiobus_write_c22; 3324 adapter->mdiobus->name = "lan743x-mdiobus"; 3325 netif_dbg(adapter, drv, adapter->netdev, 3326 "lan743x-mdiobus\n"); 3327 } 3328 } else { 3329 adapter->mdiobus->read = lan743x_mdiobus_read_c22; 3330 adapter->mdiobus->write = lan743x_mdiobus_write_c22; 3331 adapter->mdiobus->name = "lan743x-mdiobus"; 3332 netif_dbg(adapter, drv, adapter->netdev, "lan743x-mdiobus\n"); 3333 } 3334 3335 snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE, 3336 "pci-%s", pci_name(adapter->pdev)); 3337 3338 if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_) 3339 /* LAN7430 uses internal phy at address 1 */ 3340 adapter->mdiobus->phy_mask = ~(u32)BIT(1); 3341 3342 /* register mdiobus */ 3343 ret = mdiobus_register(adapter->mdiobus); 3344 if (ret < 0) 3345 goto return_error; 3346 return 0; 3347 3348 return_error: 3349 return ret; 3350 } 3351 3352 /* lan743x_pcidev_probe - Device Initialization Routine 3353 * @pdev: PCI device information struct 3354 * @id: entry in lan743x_pci_tbl 3355 * 3356 * Returns 0 on success, negative on failure 3357 * 3358 * initializes an adapter identified by a pci_dev structure. 3359 * The OS initialization, configuring of the adapter private structure, 3360 * and a hardware reset occur. 3361 **/ 3362 static int lan743x_pcidev_probe(struct pci_dev *pdev, 3363 const struct pci_device_id *id) 3364 { 3365 struct lan743x_adapter *adapter = NULL; 3366 struct net_device *netdev = NULL; 3367 int ret = -ENODEV; 3368 3369 if (id->device == PCI_DEVICE_ID_SMSC_A011 || 3370 id->device == PCI_DEVICE_ID_SMSC_A041) { 3371 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 3372 sizeof(struct lan743x_adapter), 3373 PCI11X1X_USED_TX_CHANNELS, 3374 LAN743X_USED_RX_CHANNELS); 3375 } else { 3376 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 3377 sizeof(struct lan743x_adapter), 3378 LAN743X_USED_TX_CHANNELS, 3379 LAN743X_USED_RX_CHANNELS); 3380 } 3381 3382 if (!netdev) 3383 goto return_error; 3384 3385 SET_NETDEV_DEV(netdev, &pdev->dev); 3386 pci_set_drvdata(pdev, netdev); 3387 adapter = netdev_priv(netdev); 3388 adapter->netdev = netdev; 3389 adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE | 3390 NETIF_MSG_LINK | NETIF_MSG_IFUP | 3391 NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED; 3392 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE; 3393 3394 of_get_mac_address(pdev->dev.of_node, adapter->mac_address); 3395 3396 ret = lan743x_pci_init(adapter, pdev); 3397 if (ret) 3398 goto return_error; 3399 3400 ret = lan743x_csr_init(adapter); 3401 if (ret) 3402 goto cleanup_pci; 3403 3404 ret = lan743x_hardware_init(adapter, pdev); 3405 if (ret) 3406 goto cleanup_pci; 3407 3408 ret = lan743x_mdiobus_init(adapter); 3409 if (ret) 3410 goto cleanup_hardware; 3411 3412 adapter->netdev->netdev_ops = &lan743x_netdev_ops; 3413 adapter->netdev->ethtool_ops = &lan743x_ethtool_ops; 3414 adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | 3415 NETIF_F_HW_CSUM | NETIF_F_RXCSUM; 3416 adapter->netdev->hw_features = adapter->netdev->features; 3417 3418 /* carrier off reporting is important to ethtool even BEFORE open */ 3419 netif_carrier_off(netdev); 3420 3421 ret = register_netdev(adapter->netdev); 3422 if (ret < 0) 3423 goto cleanup_mdiobus; 3424 return 0; 3425 3426 cleanup_mdiobus: 3427 lan743x_mdiobus_cleanup(adapter); 3428 3429 cleanup_hardware: 3430 lan743x_hardware_cleanup(adapter); 3431 3432 cleanup_pci: 3433 lan743x_pci_cleanup(adapter); 3434 3435 return_error: 3436 pr_warn("Initialization failed\n"); 3437 return ret; 3438 } 3439 3440 /** 3441 * lan743x_pcidev_remove - Device Removal Routine 3442 * @pdev: PCI device information struct 3443 * 3444 * this is called by the PCI subsystem to alert the driver 3445 * that it should release a PCI device. This could be caused by a 3446 * Hot-Plug event, or because the driver is going to be removed from 3447 * memory. 3448 **/ 3449 static void lan743x_pcidev_remove(struct pci_dev *pdev) 3450 { 3451 struct net_device *netdev = pci_get_drvdata(pdev); 3452 struct lan743x_adapter *adapter = netdev_priv(netdev); 3453 3454 lan743x_full_cleanup(adapter); 3455 } 3456 3457 static void lan743x_pcidev_shutdown(struct pci_dev *pdev) 3458 { 3459 struct net_device *netdev = pci_get_drvdata(pdev); 3460 struct lan743x_adapter *adapter = netdev_priv(netdev); 3461 3462 rtnl_lock(); 3463 netif_device_detach(netdev); 3464 3465 /* close netdev when netdev is at running state. 3466 * For instance, it is true when system goes to sleep by pm-suspend 3467 * However, it is false when system goes to sleep by suspend GUI menu 3468 */ 3469 if (netif_running(netdev)) 3470 lan743x_netdev_close(netdev); 3471 rtnl_unlock(); 3472 3473 #ifdef CONFIG_PM 3474 pci_save_state(pdev); 3475 #endif 3476 3477 /* clean up lan743x portion */ 3478 lan743x_hardware_cleanup(adapter); 3479 } 3480 3481 #ifdef CONFIG_PM_SLEEP 3482 static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len) 3483 { 3484 return bitrev16(crc16(0xFFFF, buf, len)); 3485 } 3486 3487 static void lan743x_pm_set_wol(struct lan743x_adapter *adapter) 3488 { 3489 const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E }; 3490 const u8 ipv6_multicast[3] = { 0x33, 0x33 }; 3491 const u8 arp_type[2] = { 0x08, 0x06 }; 3492 int mask_index; 3493 u32 sopass; 3494 u32 pmtctl; 3495 u32 wucsr; 3496 u32 macrx; 3497 u16 crc; 3498 3499 for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++) 3500 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0); 3501 3502 /* clear wake settings */ 3503 pmtctl = lan743x_csr_read(adapter, PMT_CTL); 3504 pmtctl |= PMT_CTL_WUPS_MASK_; 3505 pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ | 3506 PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ | 3507 PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_); 3508 3509 macrx = lan743x_csr_read(adapter, MAC_RX); 3510 3511 wucsr = 0; 3512 mask_index = 0; 3513 3514 pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_; 3515 3516 if (adapter->wolopts & WAKE_PHY) { 3517 pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_; 3518 pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_; 3519 } 3520 if (adapter->wolopts & WAKE_MAGIC) { 3521 wucsr |= MAC_WUCSR_MPEN_; 3522 macrx |= MAC_RX_RXEN_; 3523 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 3524 } 3525 if (adapter->wolopts & WAKE_UCAST) { 3526 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_; 3527 macrx |= MAC_RX_RXEN_; 3528 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 3529 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 3530 } 3531 if (adapter->wolopts & WAKE_BCAST) { 3532 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_; 3533 macrx |= MAC_RX_RXEN_; 3534 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 3535 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 3536 } 3537 if (adapter->wolopts & WAKE_MCAST) { 3538 /* IPv4 multicast */ 3539 crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3); 3540 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 3541 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 3542 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 3543 (crc & MAC_WUF_CFG_CRC16_MASK_)); 3544 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7); 3545 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 3546 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 3547 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 3548 mask_index++; 3549 3550 /* IPv6 multicast */ 3551 crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2); 3552 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 3553 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ | 3554 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 3555 (crc & MAC_WUF_CFG_CRC16_MASK_)); 3556 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3); 3557 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 3558 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 3559 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 3560 mask_index++; 3561 3562 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 3563 macrx |= MAC_RX_RXEN_; 3564 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 3565 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 3566 } 3567 if (adapter->wolopts & WAKE_ARP) { 3568 /* set MAC_WUF_CFG & WUF_MASK 3569 * for packettype (offset 12,13) = ARP (0x0806) 3570 */ 3571 crc = lan743x_pm_wakeframe_crc16(arp_type, 2); 3572 lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 3573 MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ | 3574 (0 << MAC_WUF_CFG_OFFSET_SHIFT_) | 3575 (crc & MAC_WUF_CFG_CRC16_MASK_)); 3576 lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000); 3577 lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0); 3578 lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0); 3579 lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0); 3580 mask_index++; 3581 3582 wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_; 3583 macrx |= MAC_RX_RXEN_; 3584 pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_; 3585 pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_; 3586 } 3587 3588 if (adapter->wolopts & WAKE_MAGICSECURE) { 3589 sopass = *(u32 *)adapter->sopass; 3590 lan743x_csr_write(adapter, MAC_MP_SO_LO, sopass); 3591 sopass = *(u16 *)&adapter->sopass[4]; 3592 lan743x_csr_write(adapter, MAC_MP_SO_HI, sopass); 3593 wucsr |= MAC_MP_SO_EN_; 3594 } 3595 3596 lan743x_csr_write(adapter, MAC_WUCSR, wucsr); 3597 lan743x_csr_write(adapter, PMT_CTL, pmtctl); 3598 lan743x_csr_write(adapter, MAC_RX, macrx); 3599 } 3600 3601 static int lan743x_pm_suspend(struct device *dev) 3602 { 3603 struct pci_dev *pdev = to_pci_dev(dev); 3604 struct net_device *netdev = pci_get_drvdata(pdev); 3605 struct lan743x_adapter *adapter = netdev_priv(netdev); 3606 u32 data; 3607 3608 lan743x_pcidev_shutdown(pdev); 3609 3610 /* clear all wakes */ 3611 lan743x_csr_write(adapter, MAC_WUCSR, 0); 3612 lan743x_csr_write(adapter, MAC_WUCSR2, 0); 3613 lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF); 3614 3615 if (adapter->wolopts) 3616 lan743x_pm_set_wol(adapter); 3617 3618 if (adapter->is_pci11x1x) { 3619 /* Save HW_CFG to config again in PM resume */ 3620 data = lan743x_csr_read(adapter, HW_CFG); 3621 adapter->hw_cfg = data; 3622 data |= (HW_CFG_RST_PROTECT_PCIE_ | 3623 HW_CFG_D3_RESET_DIS_ | 3624 HW_CFG_D3_VAUX_OVR_ | 3625 HW_CFG_HOT_RESET_DIS_ | 3626 HW_CFG_RST_PROTECT_); 3627 lan743x_csr_write(adapter, HW_CFG, data); 3628 } 3629 3630 /* Host sets PME_En, put D3hot */ 3631 return pci_prepare_to_sleep(pdev); 3632 } 3633 3634 static int lan743x_pm_resume(struct device *dev) 3635 { 3636 struct pci_dev *pdev = to_pci_dev(dev); 3637 struct net_device *netdev = pci_get_drvdata(pdev); 3638 struct lan743x_adapter *adapter = netdev_priv(netdev); 3639 int ret; 3640 3641 pci_set_power_state(pdev, PCI_D0); 3642 pci_restore_state(pdev); 3643 pci_save_state(pdev); 3644 3645 /* Restore HW_CFG that was saved during pm suspend */ 3646 if (adapter->is_pci11x1x) 3647 lan743x_csr_write(adapter, HW_CFG, adapter->hw_cfg); 3648 3649 ret = lan743x_hardware_init(adapter, pdev); 3650 if (ret) { 3651 netif_err(adapter, probe, adapter->netdev, 3652 "lan743x_hardware_init returned %d\n", ret); 3653 lan743x_pci_cleanup(adapter); 3654 return ret; 3655 } 3656 3657 /* open netdev when netdev is at running state while resume. 3658 * For instance, it is true when system wakesup after pm-suspend 3659 * However, it is false when system wakes up after suspend GUI menu 3660 */ 3661 if (netif_running(netdev)) 3662 lan743x_netdev_open(netdev); 3663 3664 netif_device_attach(netdev); 3665 ret = lan743x_csr_read(adapter, MAC_WK_SRC); 3666 netif_info(adapter, drv, adapter->netdev, 3667 "Wakeup source : 0x%08X\n", ret); 3668 3669 return 0; 3670 } 3671 3672 static const struct dev_pm_ops lan743x_pm_ops = { 3673 SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume) 3674 }; 3675 #endif /* CONFIG_PM_SLEEP */ 3676 3677 static const struct pci_device_id lan743x_pcidev_tbl[] = { 3678 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) }, 3679 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) }, 3680 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_A011) }, 3681 { PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_A041) }, 3682 { 0, } 3683 }; 3684 3685 MODULE_DEVICE_TABLE(pci, lan743x_pcidev_tbl); 3686 3687 static struct pci_driver lan743x_pcidev_driver = { 3688 .name = DRIVER_NAME, 3689 .id_table = lan743x_pcidev_tbl, 3690 .probe = lan743x_pcidev_probe, 3691 .remove = lan743x_pcidev_remove, 3692 #ifdef CONFIG_PM_SLEEP 3693 .driver.pm = &lan743x_pm_ops, 3694 #endif 3695 .shutdown = lan743x_pcidev_shutdown, 3696 }; 3697 3698 module_pci_driver(lan743x_pcidev_driver); 3699 3700 MODULE_AUTHOR(DRIVER_AUTHOR); 3701 MODULE_DESCRIPTION(DRIVER_DESC); 3702 MODULE_LICENSE("GPL"); 3703