drivers/net/ngbe/ngbe_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018-2021 Beijing WangXun Technology Co., Ltd.
   3  * Copyright(c) 2010-2017 Intel Corporation
   4  */
   5
   6 #include <errno.h>
   7 #include <rte_common.h>
   8 #include <ethdev_pci.h>
   9
  10 #include <rte_alarm.h>
  11
  12 #include "ngbe_logs.h"
  13 #include "ngbe.h"
  14 #include "ngbe_ethdev.h"
  15 #include "ngbe_rxtx.h"
  16
  17 static int ngbe_dev_close(struct rte_eth_dev *dev);
  18 static int ngbe_dev_link_update(struct rte_eth_dev *dev,
  19                                 int wait_to_complete);
  20
  21 static void ngbe_dev_link_status_print(struct rte_eth_dev *dev);
  22 static int ngbe_dev_lsc_interrupt_setup(struct rte_eth_dev *dev, uint8_t on);
  23 static int ngbe_dev_macsec_interrupt_setup(struct rte_eth_dev *dev);
  24 static int ngbe_dev_misc_interrupt_setup(struct rte_eth_dev *dev);
  25 static int ngbe_dev_rxq_interrupt_setup(struct rte_eth_dev *dev);
  26 static void ngbe_dev_interrupt_handler(void *param);
  27 static void ngbe_dev_interrupt_delayed_handler(void *param);
  28 static void ngbe_configure_msix(struct rte_eth_dev *dev);
  29
  30 /*
  31  * The set of PCI devices this driver supports
  32  */
  33 static const struct rte_pci_id pci_id_ngbe_map[] = {
  34         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860A2) },
  35         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860A2S) },
  36         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860A4) },
  37         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860A4S) },
  38         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860AL2) },
  39         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860AL2S) },
  40         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860AL4) },
  41         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860AL4S) },
  42         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860NCSI) },
  43         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860A1) },
  44         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860A1L) },
  45         { RTE_PCI_DEVICE(PCI_VENDOR_ID_WANGXUN, NGBE_DEV_ID_EM_WX1860AL_W) },
  46         { .vendor_id = 0, /* sentinel */ },
  47 };
  48
  49 static const struct rte_eth_desc_lim rx_desc_lim = {
  50         .nb_max = NGBE_RING_DESC_MAX,
  51         .nb_min = NGBE_RING_DESC_MIN,
  52         .nb_align = NGBE_RXD_ALIGN,
  53 };
  54
  55 static const struct rte_eth_desc_lim tx_desc_lim = {
  56         .nb_max = NGBE_RING_DESC_MAX,
  57         .nb_min = NGBE_RING_DESC_MIN,
  58         .nb_align = NGBE_TXD_ALIGN,
  59         .nb_seg_max = NGBE_TX_MAX_SEG,
  60         .nb_mtu_seg_max = NGBE_TX_MAX_SEG,
  61 };
  62
  63 static const struct eth_dev_ops ngbe_eth_dev_ops;
  64
  65 static inline int32_t
  66 ngbe_pf_reset_hw(struct ngbe_hw *hw)
  67 {
  68         uint32_t ctrl_ext;
  69         int32_t status;
  70
  71         status = hw->mac.reset_hw(hw);
  72
  73         ctrl_ext = rd32(hw, NGBE_PORTCTL);
  74         /* Set PF Reset Done bit so PF/VF Mail Ops can work */
  75         ctrl_ext |= NGBE_PORTCTL_RSTDONE;
  76         wr32(hw, NGBE_PORTCTL, ctrl_ext);
  77         ngbe_flush(hw);
  78
  79         if (status == NGBE_ERR_SFP_NOT_PRESENT)
  80                 status = 0;
  81         return status;
  82 }
  83
  84 static inline void
  85 ngbe_enable_intr(struct rte_eth_dev *dev)
  86 {
  87         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
  88         struct ngbe_hw *hw = ngbe_dev_hw(dev);
  89
  90         wr32(hw, NGBE_IENMISC, intr->mask_misc);
  91         wr32(hw, NGBE_IMC(0), intr->mask & BIT_MASK32);
  92         ngbe_flush(hw);
  93 }
  94
  95 static void
  96 ngbe_disable_intr(struct ngbe_hw *hw)
  97 {
  98         PMD_INIT_FUNC_TRACE();
  99
 100         wr32(hw, NGBE_IMS(0), NGBE_IMS_MASK);
 101         ngbe_flush(hw);
 102 }
 103
 104 /*
 105  * Ensure that all locks are released before first NVM or PHY access
 106  */
 107 static void
 108 ngbe_swfw_lock_reset(struct ngbe_hw *hw)
 109 {
 110         uint16_t mask;
 111
 112         /*
 113          * These ones are more tricky since they are common to all ports; but
 114          * swfw_sync retries last long enough (1s) to be almost sure that if
 115          * lock can not be taken it is due to an improper lock of the
 116          * semaphore.
 117          */
 118         mask = NGBE_MNGSEM_SWPHY |
 119                NGBE_MNGSEM_SWMBX |
 120                NGBE_MNGSEM_SWFLASH;
 121         if (hw->mac.acquire_swfw_sync(hw, mask) < 0)
 122                 PMD_DRV_LOG(DEBUG, "SWFW common locks released");
 123
 124         hw->mac.release_swfw_sync(hw, mask);
 125 }
 126
 127 static int
 128 eth_ngbe_dev_init(struct rte_eth_dev *eth_dev, void *init_params __rte_unused)
 129 {
 130         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
 131         struct ngbe_hw *hw = ngbe_dev_hw(eth_dev);
 132         struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
 133         const struct rte_memzone *mz;
 134         uint32_t ctrl_ext;
 135         int err;
 136
 137         PMD_INIT_FUNC_TRACE();
 138
 139         eth_dev->dev_ops = &ngbe_eth_dev_ops;
 140
 141         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 142                 return 0;
 143
 144         rte_eth_copy_pci_info(eth_dev, pci_dev);
 145
 146         /* Vendor and Device ID need to be set before init of shared code */
 147         hw->device_id = pci_dev->id.device_id;
 148         hw->vendor_id = pci_dev->id.vendor_id;
 149         hw->sub_system_id = pci_dev->id.subsystem_device_id;
 150         ngbe_map_device_id(hw);
 151         hw->hw_addr = (void *)pci_dev->mem_resource[0].addr;
 152
 153         /* Reserve memory for interrupt status block */
 154         mz = rte_eth_dma_zone_reserve(eth_dev, "ngbe_driver", -1,
 155                 NGBE_ISB_SIZE, NGBE_ALIGN, SOCKET_ID_ANY);
 156         if (mz == NULL)
 157                 return -ENOMEM;
 158
 159         hw->isb_dma = TMZ_PADDR(mz);
 160         hw->isb_mem = TMZ_VADDR(mz);
 161
 162         /* Initialize the shared code (base driver) */
 163         err = ngbe_init_shared_code(hw);
 164         if (err != 0) {
 165                 PMD_INIT_LOG(ERR, "Shared code init failed: %d", err);
 166                 return -EIO;
 167         }
 168
 169         /* Unlock any pending hardware semaphore */
 170         ngbe_swfw_lock_reset(hw);
 171
 172         err = hw->rom.init_params(hw);
 173         if (err != 0) {
 174                 PMD_INIT_LOG(ERR, "The EEPROM init failed: %d", err);
 175                 return -EIO;
 176         }
 177
 178         /* Make sure we have a good EEPROM before we read from it */
 179         err = hw->rom.validate_checksum(hw, NULL);
 180         if (err != 0) {
 181                 PMD_INIT_LOG(ERR, "The EEPROM checksum is not valid: %d", err);
 182                 return -EIO;
 183         }
 184
 185         err = hw->mac.init_hw(hw);
 186         if (err != 0) {
 187                 PMD_INIT_LOG(ERR, "Hardware Initialization Failure: %d", err);
 188                 return -EIO;
 189         }
 190
 191         /* disable interrupt */
 192         ngbe_disable_intr(hw);
 193
 194         /* Allocate memory for storing MAC addresses */
 195         eth_dev->data->mac_addrs = rte_zmalloc("ngbe", RTE_ETHER_ADDR_LEN *
 196                                                hw->mac.num_rar_entries, 0);
 197         if (eth_dev->data->mac_addrs == NULL) {
 198                 PMD_INIT_LOG(ERR,
 199                              "Failed to allocate %u bytes needed to store MAC addresses",
 200                              RTE_ETHER_ADDR_LEN * hw->mac.num_rar_entries);
 201                 return -ENOMEM;
 202         }
 203
 204         /* Copy the permanent MAC address */
 205         rte_ether_addr_copy((struct rte_ether_addr *)hw->mac.perm_addr,
 206                         &eth_dev->data->mac_addrs[0]);
 207
 208         /* Allocate memory for storing hash filter MAC addresses */
 209         eth_dev->data->hash_mac_addrs = rte_zmalloc("ngbe",
 210                         RTE_ETHER_ADDR_LEN * NGBE_VMDQ_NUM_UC_MAC, 0);
 211         if (eth_dev->data->hash_mac_addrs == NULL) {
 212                 PMD_INIT_LOG(ERR,
 213                              "Failed to allocate %d bytes needed to store MAC addresses",
 214                              RTE_ETHER_ADDR_LEN * NGBE_VMDQ_NUM_UC_MAC);
 215                 rte_free(eth_dev->data->mac_addrs);
 216                 eth_dev->data->mac_addrs = NULL;
 217                 return -ENOMEM;
 218         }
 219
 220         ctrl_ext = rd32(hw, NGBE_PORTCTL);
 221         /* let hardware know driver is loaded */
 222         ctrl_ext |= NGBE_PORTCTL_DRVLOAD;
 223         /* Set PF Reset Done bit so PF/VF Mail Ops can work */
 224         ctrl_ext |= NGBE_PORTCTL_RSTDONE;
 225         wr32(hw, NGBE_PORTCTL, ctrl_ext);
 226         ngbe_flush(hw);
 227
 228         PMD_INIT_LOG(DEBUG, "MAC: %d, PHY: %d",
 229                         (int)hw->mac.type, (int)hw->phy.type);
 230
 231         PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
 232                      eth_dev->data->port_id, pci_dev->id.vendor_id,
 233                      pci_dev->id.device_id);
 234
 235         rte_intr_callback_register(intr_handle,
 236                                    ngbe_dev_interrupt_handler, eth_dev);
 237
 238         /* enable uio/vfio intr/eventfd mapping */
 239         rte_intr_enable(intr_handle);
 240
 241         /* enable support intr */
 242         ngbe_enable_intr(eth_dev);
 243
 244         return 0;
 245 }
 246
 247 static int
 248 eth_ngbe_dev_uninit(struct rte_eth_dev *eth_dev)
 249 {
 250         PMD_INIT_FUNC_TRACE();
 251
 252         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 253                 return 0;
 254
 255         ngbe_dev_close(eth_dev);
 256
 257         return -EINVAL;
 258 }
 259
 260 static int
 261 eth_ngbe_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 262                 struct rte_pci_device *pci_dev)
 263 {
 264         return rte_eth_dev_create(&pci_dev->device, pci_dev->device.name,
 265                         sizeof(struct ngbe_adapter),
 266                         eth_dev_pci_specific_init, pci_dev,
 267                         eth_ngbe_dev_init, NULL);
 268 }
 269
 270 static int eth_ngbe_pci_remove(struct rte_pci_device *pci_dev)
 271 {
 272         struct rte_eth_dev *ethdev;
 273
 274         ethdev = rte_eth_dev_allocated(pci_dev->device.name);
 275         if (ethdev == NULL)
 276                 return 0;
 277
 278         return rte_eth_dev_destroy(ethdev, eth_ngbe_dev_uninit);
 279 }
 280
 281 static struct rte_pci_driver rte_ngbe_pmd = {
 282         .id_table = pci_id_ngbe_map,
 283         .drv_flags = RTE_PCI_DRV_NEED_MAPPING |
 284                      RTE_PCI_DRV_INTR_LSC,
 285         .probe = eth_ngbe_pci_probe,
 286         .remove = eth_ngbe_pci_remove,
 287 };
 288
 289 static int
 290 ngbe_dev_configure(struct rte_eth_dev *dev)
 291 {
 292         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 293         struct ngbe_adapter *adapter = ngbe_dev_adapter(dev);
 294
 295         PMD_INIT_FUNC_TRACE();
 296
 297         /* set flag to update link status after init */
 298         intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE;
 299
 300         /*
 301          * Initialize to TRUE. If any of Rx queues doesn't meet the bulk
 302          * allocation Rx preconditions we will reset it.
 303          */
 304         adapter->rx_bulk_alloc_allowed = true;
 305
 306         return 0;
 307 }
 308
 309 static void
 310 ngbe_dev_phy_intr_setup(struct rte_eth_dev *dev)
 311 {
 312         struct ngbe_hw *hw = ngbe_dev_hw(dev);
 313         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 314
 315         wr32(hw, NGBE_GPIODIR, NGBE_GPIODIR_DDR(1));
 316         wr32(hw, NGBE_GPIOINTEN, NGBE_GPIOINTEN_INT(3));
 317         wr32(hw, NGBE_GPIOINTTYPE, NGBE_GPIOINTTYPE_LEVEL(0));
 318         if (hw->phy.type == ngbe_phy_yt8521s_sfi)
 319                 wr32(hw, NGBE_GPIOINTPOL, NGBE_GPIOINTPOL_ACT(0));
 320         else
 321                 wr32(hw, NGBE_GPIOINTPOL, NGBE_GPIOINTPOL_ACT(3));
 322
 323         intr->mask_misc |= NGBE_ICRMISC_GPIO;
 324 }
 325
 326 /*
 327  * Configure device link speed and setup link.
 328  * It returns 0 on success.
 329  */
 330 static int
 331 ngbe_dev_start(struct rte_eth_dev *dev)
 332 {
 333         struct ngbe_hw *hw = ngbe_dev_hw(dev);
 334         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 335         struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
 336         uint32_t intr_vector = 0;
 337         int err;
 338         bool link_up = false, negotiate = false;
 339         uint32_t speed = 0;
 340         uint32_t allowed_speeds = 0;
 341         int status;
 342         uint32_t *link_speeds;
 343
 344         PMD_INIT_FUNC_TRACE();
 345
 346         /* disable uio/vfio intr/eventfd mapping */
 347         rte_intr_disable(intr_handle);
 348
 349         /* stop adapter */
 350         hw->adapter_stopped = 0;
 351         ngbe_stop_hw(hw);
 352
 353         /* reinitialize adapter, this calls reset and start */
 354         hw->nb_rx_queues = dev->data->nb_rx_queues;
 355         hw->nb_tx_queues = dev->data->nb_tx_queues;
 356         status = ngbe_pf_reset_hw(hw);
 357         if (status != 0)
 358                 return -1;
 359         hw->mac.start_hw(hw);
 360         hw->mac.get_link_status = true;
 361
 362         ngbe_dev_phy_intr_setup(dev);
 363
 364         /* check and configure queue intr-vector mapping */
 365         if ((rte_intr_cap_multiple(intr_handle) ||
 366              !RTE_ETH_DEV_SRIOV(dev).active) &&
 367             dev->data->dev_conf.intr_conf.rxq != 0) {
 368                 intr_vector = dev->data->nb_rx_queues;
 369                 if (rte_intr_efd_enable(intr_handle, intr_vector))
 370                         return -1;
 371         }
 372
 373         if (rte_intr_dp_is_en(intr_handle) && intr_handle->intr_vec == NULL) {
 374                 intr_handle->intr_vec =
 375                         rte_zmalloc("intr_vec",
 376                                     dev->data->nb_rx_queues * sizeof(int), 0);
 377                 if (intr_handle->intr_vec == NULL) {
 378                         PMD_INIT_LOG(ERR,
 379                                      "Failed to allocate %d rx_queues intr_vec",
 380                                      dev->data->nb_rx_queues);
 381                         return -ENOMEM;
 382                 }
 383         }
 384
 385         /* confiugre MSI-X for sleep until Rx interrupt */
 386         ngbe_configure_msix(dev);
 387
 388         /* initialize transmission unit */
 389         ngbe_dev_tx_init(dev);
 390
 391         /* This can fail when allocating mbufs for descriptor rings */
 392         err = ngbe_dev_rx_init(dev);
 393         if (err != 0) {
 394                 PMD_INIT_LOG(ERR, "Unable to initialize Rx hardware");
 395                 goto error;
 396         }
 397
 398         err = ngbe_dev_rxtx_start(dev);
 399         if (err < 0) {
 400                 PMD_INIT_LOG(ERR, "Unable to start rxtx queues");
 401                 goto error;
 402         }
 403
 404         err = hw->mac.check_link(hw, &speed, &link_up, 0);
 405         if (err != 0)
 406                 goto error;
 407         dev->data->dev_link.link_status = link_up;
 408
 409         link_speeds = &dev->data->dev_conf.link_speeds;
 410         if (*link_speeds == ETH_LINK_SPEED_AUTONEG)
 411                 negotiate = true;
 412
 413         err = hw->mac.get_link_capabilities(hw, &speed, &negotiate);
 414         if (err != 0)
 415                 goto error;
 416
 417         allowed_speeds = 0;
 418         if (hw->mac.default_speeds & NGBE_LINK_SPEED_1GB_FULL)
 419                 allowed_speeds |= ETH_LINK_SPEED_1G;
 420         if (hw->mac.default_speeds & NGBE_LINK_SPEED_100M_FULL)
 421                 allowed_speeds |= ETH_LINK_SPEED_100M;
 422         if (hw->mac.default_speeds & NGBE_LINK_SPEED_10M_FULL)
 423                 allowed_speeds |= ETH_LINK_SPEED_10M;
 424
 425         if (*link_speeds & ~allowed_speeds) {
 426                 PMD_INIT_LOG(ERR, "Invalid link setting");
 427                 goto error;
 428         }
 429
 430         speed = 0x0;
 431         if (*link_speeds == ETH_LINK_SPEED_AUTONEG) {
 432                 speed = hw->mac.default_speeds;
 433         } else {
 434                 if (*link_speeds & ETH_LINK_SPEED_1G)
 435                         speed |= NGBE_LINK_SPEED_1GB_FULL;
 436                 if (*link_speeds & ETH_LINK_SPEED_100M)
 437                         speed |= NGBE_LINK_SPEED_100M_FULL;
 438                 if (*link_speeds & ETH_LINK_SPEED_10M)
 439                         speed |= NGBE_LINK_SPEED_10M_FULL;
 440         }
 441
 442         hw->phy.init_hw(hw);
 443         err = hw->mac.setup_link(hw, speed, link_up);
 444         if (err != 0)
 445                 goto error;
 446
 447         if (rte_intr_allow_others(intr_handle)) {
 448                 ngbe_dev_misc_interrupt_setup(dev);
 449                 /* check if lsc interrupt is enabled */
 450                 if (dev->data->dev_conf.intr_conf.lsc != 0)
 451                         ngbe_dev_lsc_interrupt_setup(dev, TRUE);
 452                 else
 453                         ngbe_dev_lsc_interrupt_setup(dev, FALSE);
 454                 ngbe_dev_macsec_interrupt_setup(dev);
 455                 ngbe_set_ivar_map(hw, -1, 1, NGBE_MISC_VEC_ID);
 456         } else {
 457                 rte_intr_callback_unregister(intr_handle,
 458                                              ngbe_dev_interrupt_handler, dev);
 459                 if (dev->data->dev_conf.intr_conf.lsc != 0)
 460                         PMD_INIT_LOG(INFO,
 461                                      "LSC won't enable because of no intr multiplex");
 462         }
 463
 464         /* check if rxq interrupt is enabled */
 465         if (dev->data->dev_conf.intr_conf.rxq != 0 &&
 466             rte_intr_dp_is_en(intr_handle))
 467                 ngbe_dev_rxq_interrupt_setup(dev);
 468
 469         /* enable UIO/VFIO intr/eventfd mapping */
 470         rte_intr_enable(intr_handle);
 471
 472         /* resume enabled intr since HW reset */
 473         ngbe_enable_intr(dev);
 474
 475         if ((hw->sub_system_id & NGBE_OEM_MASK) == NGBE_LY_M88E1512_SFP ||
 476                 (hw->sub_system_id & NGBE_OEM_MASK) == NGBE_LY_YT8521S_SFP) {
 477                 /* gpio0 is used to power on/off control*/
 478                 wr32(hw, NGBE_GPIODATA, 0);
 479         }
 480
 481         /*
 482          * Update link status right before return, because it may
 483          * start link configuration process in a separate thread.
 484          */
 485         ngbe_dev_link_update(dev, 0);
 486
 487         return 0;
 488
 489 error:
 490         PMD_INIT_LOG(ERR, "failure in dev start: %d", err);
 491         ngbe_dev_clear_queues(dev);
 492         return -EIO;
 493 }
 494
 495 /*
 496  * Stop device: disable rx and tx functions to allow for reconfiguring.
 497  */
 498 static int
 499 ngbe_dev_stop(struct rte_eth_dev *dev)
 500 {
 501         struct rte_eth_link link;
 502         struct ngbe_hw *hw = ngbe_dev_hw(dev);
 503         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 504         struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
 505
 506         if (hw->adapter_stopped)
 507                 return 0;
 508
 509         PMD_INIT_FUNC_TRACE();
 510
 511         if ((hw->sub_system_id & NGBE_OEM_MASK) == NGBE_LY_M88E1512_SFP ||
 512                 (hw->sub_system_id & NGBE_OEM_MASK) == NGBE_LY_YT8521S_SFP) {
 513                 /* gpio0 is used to power on/off control*/
 514                 wr32(hw, NGBE_GPIODATA, NGBE_GPIOBIT_0);
 515         }
 516
 517         /* disable interrupts */
 518         ngbe_disable_intr(hw);
 519
 520         /* reset the NIC */
 521         ngbe_pf_reset_hw(hw);
 522         hw->adapter_stopped = 0;
 523
 524         /* stop adapter */
 525         ngbe_stop_hw(hw);
 526
 527         ngbe_dev_clear_queues(dev);
 528
 529         /* Clear recorded link status */
 530         memset(&link, 0, sizeof(link));
 531         rte_eth_linkstatus_set(dev, &link);
 532
 533         if (!rte_intr_allow_others(intr_handle))
 534                 /* resume to the default handler */
 535                 rte_intr_callback_register(intr_handle,
 536                                            ngbe_dev_interrupt_handler,
 537                                            (void *)dev);
 538
 539         /* Clean datapath event and queue/vec mapping */
 540         rte_intr_efd_disable(intr_handle);
 541         if (intr_handle->intr_vec != NULL) {
 542                 rte_free(intr_handle->intr_vec);
 543                 intr_handle->intr_vec = NULL;
 544         }
 545
 546         hw->adapter_stopped = true;
 547         dev->data->dev_started = 0;
 548
 549         return 0;
 550 }
 551
 552 /*
 553  * Reset and stop device.
 554  */
 555 static int
 556 ngbe_dev_close(struct rte_eth_dev *dev)
 557 {
 558         PMD_INIT_FUNC_TRACE();
 559
 560         RTE_SET_USED(dev);
 561
 562         return -EINVAL;
 563 }
 564
 565 static int
 566 ngbe_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 567 {
 568         struct ngbe_hw *hw = ngbe_dev_hw(dev);
 569
 570         dev_info->max_rx_queues = (uint16_t)hw->mac.max_rx_queues;
 571         dev_info->max_tx_queues = (uint16_t)hw->mac.max_tx_queues;
 572
 573         dev_info->default_rxconf = (struct rte_eth_rxconf) {
 574                 .rx_thresh = {
 575                         .pthresh = NGBE_DEFAULT_RX_PTHRESH,
 576                         .hthresh = NGBE_DEFAULT_RX_HTHRESH,
 577                         .wthresh = NGBE_DEFAULT_RX_WTHRESH,
 578                 },
 579                 .rx_free_thresh = NGBE_DEFAULT_RX_FREE_THRESH,
 580                 .rx_drop_en = 0,
 581                 .offloads = 0,
 582         };
 583
 584         dev_info->default_txconf = (struct rte_eth_txconf) {
 585                 .tx_thresh = {
 586                         .pthresh = NGBE_DEFAULT_TX_PTHRESH,
 587                         .hthresh = NGBE_DEFAULT_TX_HTHRESH,
 588                         .wthresh = NGBE_DEFAULT_TX_WTHRESH,
 589                 },
 590                 .tx_free_thresh = NGBE_DEFAULT_TX_FREE_THRESH,
 591                 .offloads = 0,
 592         };
 593
 594         dev_info->rx_desc_lim = rx_desc_lim;
 595         dev_info->tx_desc_lim = tx_desc_lim;
 596
 597         dev_info->speed_capa = ETH_LINK_SPEED_1G | ETH_LINK_SPEED_100M |
 598                                 ETH_LINK_SPEED_10M;
 599
 600         /* Driver-preferred Rx/Tx parameters */
 601         dev_info->default_txportconf.burst_size = 32;
 602         dev_info->default_rxportconf.nb_queues = 1;
 603         dev_info->default_txportconf.nb_queues = 1;
 604         dev_info->default_rxportconf.ring_size = 256;
 605         dev_info->default_txportconf.ring_size = 256;
 606
 607         return 0;
 608 }
 609
 610 /* return 0 means link status changed, -1 means not changed */
 611 int
 612 ngbe_dev_link_update_share(struct rte_eth_dev *dev,
 613                             int wait_to_complete)
 614 {
 615         struct ngbe_hw *hw = ngbe_dev_hw(dev);
 616         struct rte_eth_link link;
 617         u32 link_speed = NGBE_LINK_SPEED_UNKNOWN;
 618         u32 lan_speed = 0;
 619         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 620         bool link_up;
 621         int err;
 622         int wait = 1;
 623
 624         memset(&link, 0, sizeof(link));
 625         link.link_status = ETH_LINK_DOWN;
 626         link.link_speed = ETH_SPEED_NUM_NONE;
 627         link.link_duplex = ETH_LINK_HALF_DUPLEX;
 628         link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 629                         ~ETH_LINK_SPEED_AUTONEG);
 630
 631         hw->mac.get_link_status = true;
 632
 633         if (intr->flags & NGBE_FLAG_NEED_LINK_CONFIG)
 634                 return rte_eth_linkstatus_set(dev, &link);
 635
 636         /* check if it needs to wait to complete, if lsc interrupt is enabled */
 637         if (wait_to_complete == 0 || dev->data->dev_conf.intr_conf.lsc != 0)
 638                 wait = 0;
 639
 640         err = hw->mac.check_link(hw, &link_speed, &link_up, wait);
 641         if (err != 0) {
 642                 link.link_speed = ETH_SPEED_NUM_NONE;
 643                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
 644                 return rte_eth_linkstatus_set(dev, &link);
 645         }
 646
 647         if (!link_up)
 648                 return rte_eth_linkstatus_set(dev, &link);
 649
 650         intr->flags &= ~NGBE_FLAG_NEED_LINK_CONFIG;
 651         link.link_status = ETH_LINK_UP;
 652         link.link_duplex = ETH_LINK_FULL_DUPLEX;
 653
 654         switch (link_speed) {
 655         default:
 656         case NGBE_LINK_SPEED_UNKNOWN:
 657                 link.link_speed = ETH_SPEED_NUM_NONE;
 658                 break;
 659
 660         case NGBE_LINK_SPEED_10M_FULL:
 661                 link.link_speed = ETH_SPEED_NUM_10M;
 662                 lan_speed = 0;
 663                 break;
 664
 665         case NGBE_LINK_SPEED_100M_FULL:
 666                 link.link_speed = ETH_SPEED_NUM_100M;
 667                 lan_speed = 1;
 668                 break;
 669
 670         case NGBE_LINK_SPEED_1GB_FULL:
 671                 link.link_speed = ETH_SPEED_NUM_1G;
 672                 lan_speed = 2;
 673                 break;
 674         }
 675
 676         if (hw->is_pf) {
 677                 wr32m(hw, NGBE_LAN_SPEED, NGBE_LAN_SPEED_MASK, lan_speed);
 678                 if (link_speed & (NGBE_LINK_SPEED_1GB_FULL |
 679                                 NGBE_LINK_SPEED_100M_FULL |
 680                                 NGBE_LINK_SPEED_10M_FULL)) {
 681                         wr32m(hw, NGBE_MACTXCFG, NGBE_MACTXCFG_SPEED_MASK,
 682                                 NGBE_MACTXCFG_SPEED_1G | NGBE_MACTXCFG_TE);
 683                 }
 684         }
 685
 686         return rte_eth_linkstatus_set(dev, &link);
 687 }
 688
 689 static int
 690 ngbe_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 691 {
 692         return ngbe_dev_link_update_share(dev, wait_to_complete);
 693 }
 694
 695 /**
 696  * It clears the interrupt causes and enables the interrupt.
 697  * It will be called once only during NIC initialized.
 698  *
 699  * @param dev
 700  *  Pointer to struct rte_eth_dev.
 701  * @param on
 702  *  Enable or Disable.
 703  *
 704  * @return
 705  *  - On success, zero.
 706  *  - On failure, a negative value.
 707  */
 708 static int
 709 ngbe_dev_lsc_interrupt_setup(struct rte_eth_dev *dev, uint8_t on)
 710 {
 711         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 712
 713         ngbe_dev_link_status_print(dev);
 714         if (on != 0) {
 715                 intr->mask_misc |= NGBE_ICRMISC_PHY;
 716                 intr->mask_misc |= NGBE_ICRMISC_GPIO;
 717         } else {
 718                 intr->mask_misc &= ~NGBE_ICRMISC_PHY;
 719                 intr->mask_misc &= ~NGBE_ICRMISC_GPIO;
 720         }
 721
 722         return 0;
 723 }
 724
 725 /**
 726  * It clears the interrupt causes and enables the interrupt.
 727  * It will be called once only during NIC initialized.
 728  *
 729  * @param dev
 730  *  Pointer to struct rte_eth_dev.
 731  *
 732  * @return
 733  *  - On success, zero.
 734  *  - On failure, a negative value.
 735  */
 736 static int
 737 ngbe_dev_misc_interrupt_setup(struct rte_eth_dev *dev)
 738 {
 739         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 740         u64 mask;
 741
 742         mask = NGBE_ICR_MASK;
 743         mask &= (1ULL << NGBE_MISC_VEC_ID);
 744         intr->mask |= mask;
 745         intr->mask_misc |= NGBE_ICRMISC_GPIO;
 746
 747         return 0;
 748 }
 749
 750 /**
 751  * It clears the interrupt causes and enables the interrupt.
 752  * It will be called once only during NIC initialized.
 753  *
 754  * @param dev
 755  *  Pointer to struct rte_eth_dev.
 756  *
 757  * @return
 758  *  - On success, zero.
 759  *  - On failure, a negative value.
 760  */
 761 static int
 762 ngbe_dev_rxq_interrupt_setup(struct rte_eth_dev *dev)
 763 {
 764         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 765         u64 mask;
 766
 767         mask = NGBE_ICR_MASK;
 768         mask &= ~((1ULL << NGBE_RX_VEC_START) - 1);
 769         intr->mask |= mask;
 770
 771         return 0;
 772 }
 773
 774 /**
 775  * It clears the interrupt causes and enables the interrupt.
 776  * It will be called once only during NIC initialized.
 777  *
 778  * @param dev
 779  *  Pointer to struct rte_eth_dev.
 780  *
 781  * @return
 782  *  - On success, zero.
 783  *  - On failure, a negative value.
 784  */
 785 static int
 786 ngbe_dev_macsec_interrupt_setup(struct rte_eth_dev *dev)
 787 {
 788         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 789
 790         intr->mask_misc |= NGBE_ICRMISC_LNKSEC;
 791
 792         return 0;
 793 }
 794
 795 /*
 796  * It reads ICR and sets flag for the link_update.
 797  *
 798  * @param dev
 799  *  Pointer to struct rte_eth_dev.
 800  *
 801  * @return
 802  *  - On success, zero.
 803  *  - On failure, a negative value.
 804  */
 805 static int
 806 ngbe_dev_interrupt_get_status(struct rte_eth_dev *dev)
 807 {
 808         uint32_t eicr;
 809         struct ngbe_hw *hw = ngbe_dev_hw(dev);
 810         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 811
 812         /* clear all cause mask */
 813         ngbe_disable_intr(hw);
 814
 815         /* read-on-clear nic registers here */
 816         eicr = ((u32 *)hw->isb_mem)[NGBE_ISB_MISC];
 817         PMD_DRV_LOG(DEBUG, "eicr %x", eicr);
 818
 819         intr->flags = 0;
 820
 821         /* set flag for async link update */
 822         if (eicr & NGBE_ICRMISC_PHY)
 823                 intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE;
 824
 825         if (eicr & NGBE_ICRMISC_VFMBX)
 826                 intr->flags |= NGBE_FLAG_MAILBOX;
 827
 828         if (eicr & NGBE_ICRMISC_LNKSEC)
 829                 intr->flags |= NGBE_FLAG_MACSEC;
 830
 831         if (eicr & NGBE_ICRMISC_GPIO)
 832                 intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE;
 833
 834         return 0;
 835 }
 836
 837 /**
 838  * It gets and then prints the link status.
 839  *
 840  * @param dev
 841  *  Pointer to struct rte_eth_dev.
 842  *
 843  * @return
 844  *  - On success, zero.
 845  *  - On failure, a negative value.
 846  */
 847 static void
 848 ngbe_dev_link_status_print(struct rte_eth_dev *dev)
 849 {
 850         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 851         struct rte_eth_link link;
 852
 853         rte_eth_linkstatus_get(dev, &link);
 854
 855         if (link.link_status == ETH_LINK_UP) {
 856                 PMD_INIT_LOG(INFO, "Port %d: Link Up - speed %u Mbps - %s",
 857                                         (int)(dev->data->port_id),
 858                                         (unsigned int)link.link_speed,
 859                         link.link_duplex == ETH_LINK_FULL_DUPLEX ?
 860                                         "full-duplex" : "half-duplex");
 861         } else {
 862                 PMD_INIT_LOG(INFO, " Port %d: Link Down",
 863                                 (int)(dev->data->port_id));
 864         }
 865         PMD_INIT_LOG(DEBUG, "PCI Address: " PCI_PRI_FMT,
 866                                 pci_dev->addr.domain,
 867                                 pci_dev->addr.bus,
 868                                 pci_dev->addr.devid,
 869                                 pci_dev->addr.function);
 870 }
 871
 872 /*
 873  * It executes link_update after knowing an interrupt occurred.
 874  *
 875  * @param dev
 876  *  Pointer to struct rte_eth_dev.
 877  *
 878  * @return
 879  *  - On success, zero.
 880  *  - On failure, a negative value.
 881  */
 882 static int
 883 ngbe_dev_interrupt_action(struct rte_eth_dev *dev)
 884 {
 885         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 886         int64_t timeout;
 887
 888         PMD_DRV_LOG(DEBUG, "intr action type %d", intr->flags);
 889
 890         if (intr->flags & NGBE_FLAG_NEED_LINK_UPDATE) {
 891                 struct rte_eth_link link;
 892
 893                 /*get the link status before link update, for predicting later*/
 894                 rte_eth_linkstatus_get(dev, &link);
 895
 896                 ngbe_dev_link_update(dev, 0);
 897
 898                 /* likely to up */
 899                 if (link.link_status != ETH_LINK_UP)
 900                         /* handle it 1 sec later, wait it being stable */
 901                         timeout = NGBE_LINK_UP_CHECK_TIMEOUT;
 902                 /* likely to down */
 903                 else
 904                         /* handle it 4 sec later, wait it being stable */
 905                         timeout = NGBE_LINK_DOWN_CHECK_TIMEOUT;
 906
 907                 ngbe_dev_link_status_print(dev);
 908                 if (rte_eal_alarm_set(timeout * 1000,
 909                                       ngbe_dev_interrupt_delayed_handler,
 910                                       (void *)dev) < 0) {
 911                         PMD_DRV_LOG(ERR, "Error setting alarm");
 912                 } else {
 913                         /* remember original mask */
 914                         intr->mask_misc_orig = intr->mask_misc;
 915                         /* only disable lsc interrupt */
 916                         intr->mask_misc &= ~NGBE_ICRMISC_PHY;
 917
 918                         intr->mask_orig = intr->mask;
 919                         /* only disable all misc interrupts */
 920                         intr->mask &= ~(1ULL << NGBE_MISC_VEC_ID);
 921                 }
 922         }
 923
 924         PMD_DRV_LOG(DEBUG, "enable intr immediately");
 925         ngbe_enable_intr(dev);
 926
 927         return 0;
 928 }
 929
 930 /**
 931  * Interrupt handler which shall be registered for alarm callback for delayed
 932  * handling specific interrupt to wait for the stable nic state. As the
 933  * NIC interrupt state is not stable for ngbe after link is just down,
 934  * it needs to wait 4 seconds to get the stable status.
 935  *
 936  * @param param
 937  *  The address of parameter (struct rte_eth_dev *) registered before.
 938  */
 939 static void
 940 ngbe_dev_interrupt_delayed_handler(void *param)
 941 {
 942         struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
 943         struct ngbe_interrupt *intr = ngbe_dev_intr(dev);
 944         struct ngbe_hw *hw = ngbe_dev_hw(dev);
 945         uint32_t eicr;
 946
 947         ngbe_disable_intr(hw);
 948
 949         eicr = ((u32 *)hw->isb_mem)[NGBE_ISB_MISC];
 950
 951         if (intr->flags & NGBE_FLAG_NEED_LINK_UPDATE) {
 952                 ngbe_dev_link_update(dev, 0);
 953                 intr->flags &= ~NGBE_FLAG_NEED_LINK_UPDATE;
 954                 ngbe_dev_link_status_print(dev);
 955                 rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC,
 956                                               NULL);
 957         }
 958
 959         if (intr->flags & NGBE_FLAG_MACSEC) {
 960                 rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_MACSEC,
 961                                               NULL);
 962                 intr->flags &= ~NGBE_FLAG_MACSEC;
 963         }
 964
 965         /* restore original mask */
 966         intr->mask_misc = intr->mask_misc_orig;
 967         intr->mask_misc_orig = 0;
 968         intr->mask = intr->mask_orig;
 969         intr->mask_orig = 0;
 970
 971         PMD_DRV_LOG(DEBUG, "enable intr in delayed handler S[%08x]", eicr);
 972         ngbe_enable_intr(dev);
 973 }
 974
 975 /**
 976  * Interrupt handler triggered by NIC  for handling
 977  * specific interrupt.
 978  *
 979  * @param param
 980  *  The address of parameter (struct rte_eth_dev *) registered before.
 981  */
 982 static void
 983 ngbe_dev_interrupt_handler(void *param)
 984 {
 985         struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
 986
 987         ngbe_dev_interrupt_get_status(dev);
 988         ngbe_dev_interrupt_action(dev);
 989 }
 990
 991 /**
 992  * Set the IVAR registers, mapping interrupt causes to vectors
 993  * @param hw
 994  *  pointer to ngbe_hw struct
 995  * @direction
 996  *  0 for Rx, 1 for Tx, -1 for other causes
 997  * @queue
 998  *  queue to map the corresponding interrupt to
 999  * @msix_vector
1000  *  the vector to map to the corresponding queue
1001  */
1002 void
1003 ngbe_set_ivar_map(struct ngbe_hw *hw, int8_t direction,
1004                    uint8_t queue, uint8_t msix_vector)
1005 {
1006         uint32_t tmp, idx;
1007
1008         if (direction == -1) {
1009                 /* other causes */
1010                 msix_vector |= NGBE_IVARMISC_VLD;
1011                 idx = 0;
1012                 tmp = rd32(hw, NGBE_IVARMISC);
1013                 tmp &= ~(0xFF << idx);
1014                 tmp |= (msix_vector << idx);
1015                 wr32(hw, NGBE_IVARMISC, tmp);
1016         } else {
1017                 /* rx or tx causes */
1018                 /* Workround for ICR lost */
1019                 idx = ((16 * (queue & 1)) + (8 * direction));
1020                 tmp = rd32(hw, NGBE_IVAR(queue >> 1));
1021                 tmp &= ~(0xFF << idx);
1022                 tmp |= (msix_vector << idx);
1023                 wr32(hw, NGBE_IVAR(queue >> 1), tmp);
1024         }
1025 }
1026
1027 /**
1028  * Sets up the hardware to properly generate MSI-X interrupts
1029  * @hw
1030  *  board private structure
1031  */
1032 static void
1033 ngbe_configure_msix(struct rte_eth_dev *dev)
1034 {
1035         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
1036         struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
1037         struct ngbe_hw *hw = ngbe_dev_hw(dev);
1038         uint32_t queue_id, base = NGBE_MISC_VEC_ID;
1039         uint32_t vec = NGBE_MISC_VEC_ID;
1040         uint32_t gpie;
1041
1042         /*
1043          * Won't configure MSI-X register if no mapping is done
1044          * between intr vector and event fd
1045          * but if MSI-X has been enabled already, need to configure
1046          * auto clean, auto mask and throttling.
1047          */
1048         gpie = rd32(hw, NGBE_GPIE);
1049         if (!rte_intr_dp_is_en(intr_handle) &&
1050             !(gpie & NGBE_GPIE_MSIX))
1051                 return;
1052
1053         if (rte_intr_allow_others(intr_handle)) {
1054                 base = NGBE_RX_VEC_START;
1055                 vec = base;
1056         }
1057
1058         /* setup GPIE for MSI-X mode */
1059         gpie = rd32(hw, NGBE_GPIE);
1060         gpie |= NGBE_GPIE_MSIX;
1061         wr32(hw, NGBE_GPIE, gpie);
1062
1063         /* Populate the IVAR table and set the ITR values to the
1064          * corresponding register.
1065          */
1066         if (rte_intr_dp_is_en(intr_handle)) {
1067                 for (queue_id = 0; queue_id < dev->data->nb_rx_queues;
1068                         queue_id++) {
1069                         /* by default, 1:1 mapping */
1070                         ngbe_set_ivar_map(hw, 0, queue_id, vec);
1071                         intr_handle->intr_vec[queue_id] = vec;
1072                         if (vec < base + intr_handle->nb_efd - 1)
1073                                 vec++;
1074                 }
1075
1076                 ngbe_set_ivar_map(hw, -1, 1, NGBE_MISC_VEC_ID);
1077         }
1078         wr32(hw, NGBE_ITR(NGBE_MISC_VEC_ID),
1079                         NGBE_ITR_IVAL_1G(NGBE_QUEUE_ITR_INTERVAL_DEFAULT)
1080                         | NGBE_ITR_WRDSA);
1081 }
1082
1083 static const struct eth_dev_ops ngbe_eth_dev_ops = {
1084         .dev_configure              = ngbe_dev_configure,
1085         .dev_infos_get              = ngbe_dev_info_get,
1086         .dev_start                  = ngbe_dev_start,
1087         .dev_stop                   = ngbe_dev_stop,
1088         .link_update                = ngbe_dev_link_update,
1089         .tx_queue_start             = ngbe_dev_tx_queue_start,
1090         .tx_queue_stop              = ngbe_dev_tx_queue_stop,
1091         .rx_queue_setup             = ngbe_dev_rx_queue_setup,
1092         .rx_queue_release           = ngbe_dev_rx_queue_release,
1093         .tx_queue_setup             = ngbe_dev_tx_queue_setup,
1094         .tx_queue_release           = ngbe_dev_tx_queue_release,
1095 };
1096
1097 RTE_PMD_REGISTER_PCI(net_ngbe, rte_ngbe_pmd);
1098 RTE_PMD_REGISTER_PCI_TABLE(net_ngbe, pci_id_ngbe_map);
1099 RTE_PMD_REGISTER_KMOD_DEP(net_ngbe, "* igb_uio | uio_pci_generic | vfio-pci");
1100
1101 RTE_LOG_REGISTER_SUFFIX(ngbe_logtype_init, init, NOTICE);
1102 RTE_LOG_REGISTER_SUFFIX(ngbe_logtype_driver, driver, NOTICE);
1103
1104 #ifdef RTE_ETHDEV_DEBUG_RX
1105         RTE_LOG_REGISTER_SUFFIX(ngbe_logtype_rx, rx, DEBUG);
1106 #endif
1107 #ifdef RTE_ETHDEV_DEBUG_TX
1108         RTE_LOG_REGISTER_SUFFIX(ngbe_logtype_tx, tx, DEBUG);
1109 #endif