drivers/net/e1000/em_ethdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/queue.h>
  35 #include <stdio.h>
  36 #include <errno.h>
  37 #include <stdint.h>
  38 #include <stdarg.h>
  39
  40 #include <rte_common.h>
  41 #include <rte_interrupts.h>
  42 #include <rte_byteorder.h>
  43 #include <rte_log.h>
  44 #include <rte_debug.h>
  45 #include <rte_pci.h>
  46 #include <rte_ether.h>
  47 #include <rte_ethdev.h>
  48 #include <rte_memory.h>
  49 #include <rte_memzone.h>
  50 #include <rte_eal.h>
  51 #include <rte_atomic.h>
  52 #include <rte_malloc.h>
  53 #include <rte_dev.h>
  54
  55 #include "e1000_logs.h"
  56 #include "base/e1000_api.h"
  57 #include "e1000_ethdev.h"
  58
  59 #define EM_EIAC                 0x000DC
  60
  61 #define PMD_ROUNDUP(x,y)        (((x) + (y) - 1)/(y) * (y))
  62
  63
  64 static int eth_em_configure(struct rte_eth_dev *dev);
  65 static int eth_em_start(struct rte_eth_dev *dev);
  66 static void eth_em_stop(struct rte_eth_dev *dev);
  67 static void eth_em_close(struct rte_eth_dev *dev);
  68 static void eth_em_promiscuous_enable(struct rte_eth_dev *dev);
  69 static void eth_em_promiscuous_disable(struct rte_eth_dev *dev);
  70 static void eth_em_allmulticast_enable(struct rte_eth_dev *dev);
  71 static void eth_em_allmulticast_disable(struct rte_eth_dev *dev);
  72 static int eth_em_link_update(struct rte_eth_dev *dev,
  73                                 int wait_to_complete);
  74 static void eth_em_stats_get(struct rte_eth_dev *dev,
  75                                 struct rte_eth_stats *rte_stats);
  76 static void eth_em_stats_reset(struct rte_eth_dev *dev);
  77 static void eth_em_infos_get(struct rte_eth_dev *dev,
  78                                 struct rte_eth_dev_info *dev_info);
  79 static int eth_em_flow_ctrl_get(struct rte_eth_dev *dev,
  80                                 struct rte_eth_fc_conf *fc_conf);
  81 static int eth_em_flow_ctrl_set(struct rte_eth_dev *dev,
  82                                 struct rte_eth_fc_conf *fc_conf);
  83 static int eth_em_interrupt_setup(struct rte_eth_dev *dev);
  84 static int eth_em_rxq_interrupt_setup(struct rte_eth_dev *dev);
  85 static int eth_em_interrupt_get_status(struct rte_eth_dev *dev);
  86 static int eth_em_interrupt_action(struct rte_eth_dev *dev);
  87 static void eth_em_interrupt_handler(struct rte_intr_handle *handle,
  88                                                         void *param);
  89
  90 static int em_hw_init(struct e1000_hw *hw);
  91 static int em_hardware_init(struct e1000_hw *hw);
  92 static void em_hw_control_acquire(struct e1000_hw *hw);
  93 static void em_hw_control_release(struct e1000_hw *hw);
  94 static void em_init_manageability(struct e1000_hw *hw);
  95 static void em_release_manageability(struct e1000_hw *hw);
  96
  97 static int eth_em_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
  98
  99 static int eth_em_vlan_filter_set(struct rte_eth_dev *dev,
 100                 uint16_t vlan_id, int on);
 101 static void eth_em_vlan_offload_set(struct rte_eth_dev *dev, int mask);
 102 static void em_vlan_hw_filter_enable(struct rte_eth_dev *dev);
 103 static void em_vlan_hw_filter_disable(struct rte_eth_dev *dev);
 104 static void em_vlan_hw_strip_enable(struct rte_eth_dev *dev);
 105 static void em_vlan_hw_strip_disable(struct rte_eth_dev *dev);
 106
 107 /*
 108 static void eth_em_vlan_filter_set(struct rte_eth_dev *dev,
 109                                         uint16_t vlan_id, int on);
 110 */
 111
 112 static int eth_em_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id);
 113 static int eth_em_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id);
 114 static void em_lsc_intr_disable(struct e1000_hw *hw);
 115 static void em_rxq_intr_enable(struct e1000_hw *hw);
 116 static void em_rxq_intr_disable(struct e1000_hw *hw);
 117
 118 static int eth_em_led_on(struct rte_eth_dev *dev);
 119 static int eth_em_led_off(struct rte_eth_dev *dev);
 120
 121 static int em_get_rx_buffer_size(struct e1000_hw *hw);
 122 static void eth_em_rar_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
 123                 uint32_t index, uint32_t pool);
 124 static void eth_em_rar_clear(struct rte_eth_dev *dev, uint32_t index);
 125
 126 static int eth_em_set_mc_addr_list(struct rte_eth_dev *dev,
 127                                    struct ether_addr *mc_addr_set,
 128                                    uint32_t nb_mc_addr);
 129
 130 #define EM_FC_PAUSE_TIME 0x0680
 131 #define EM_LINK_UPDATE_CHECK_TIMEOUT  90  /* 9s */
 132 #define EM_LINK_UPDATE_CHECK_INTERVAL 100 /* ms */
 133
 134 static enum e1000_fc_mode em_fc_setting = e1000_fc_full;
 135
 136 /*
 137  * The set of PCI devices this driver supports
 138  */
 139 static const struct rte_pci_id pci_id_em_map[] = {
 140
 141 #define RTE_PCI_DEV_ID_DECL_EM(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
 142 #include "rte_pci_dev_ids.h"
 143
 144 {0},
 145 };
 146
 147 static const struct eth_dev_ops eth_em_ops = {
 148         .dev_configure        = eth_em_configure,
 149         .dev_start            = eth_em_start,
 150         .dev_stop             = eth_em_stop,
 151         .dev_close            = eth_em_close,
 152         .promiscuous_enable   = eth_em_promiscuous_enable,
 153         .promiscuous_disable  = eth_em_promiscuous_disable,
 154         .allmulticast_enable  = eth_em_allmulticast_enable,
 155         .allmulticast_disable = eth_em_allmulticast_disable,
 156         .link_update          = eth_em_link_update,
 157         .stats_get            = eth_em_stats_get,
 158         .stats_reset          = eth_em_stats_reset,
 159         .dev_infos_get        = eth_em_infos_get,
 160         .mtu_set              = eth_em_mtu_set,
 161         .vlan_filter_set      = eth_em_vlan_filter_set,
 162         .vlan_offload_set     = eth_em_vlan_offload_set,
 163         .rx_queue_setup       = eth_em_rx_queue_setup,
 164         .rx_queue_release     = eth_em_rx_queue_release,
 165         .rx_queue_count       = eth_em_rx_queue_count,
 166         .rx_descriptor_done   = eth_em_rx_descriptor_done,
 167         .tx_queue_setup       = eth_em_tx_queue_setup,
 168         .tx_queue_release     = eth_em_tx_queue_release,
 169         .rx_queue_intr_enable = eth_em_rx_queue_intr_enable,
 170         .rx_queue_intr_disable = eth_em_rx_queue_intr_disable,
 171         .dev_led_on           = eth_em_led_on,
 172         .dev_led_off          = eth_em_led_off,
 173         .flow_ctrl_get        = eth_em_flow_ctrl_get,
 174         .flow_ctrl_set        = eth_em_flow_ctrl_set,
 175         .mac_addr_add         = eth_em_rar_set,
 176         .mac_addr_remove      = eth_em_rar_clear,
 177         .set_mc_addr_list     = eth_em_set_mc_addr_list,
 178         .rxq_info_get         = em_rxq_info_get,
 179         .txq_info_get         = em_txq_info_get,
 180 };
 181
 182 /**
 183  * Atomically reads the link status information from global
 184  * structure rte_eth_dev.
 185  *
 186  * @param dev
 187  *   - Pointer to the structure rte_eth_dev to read from.
 188  *   - Pointer to the buffer to be saved with the link status.
 189  *
 190  * @return
 191  *   - On success, zero.
 192  *   - On failure, negative value.
 193  */
 194 static inline int
 195 rte_em_dev_atomic_read_link_status(struct rte_eth_dev *dev,
 196                                 struct rte_eth_link *link)
 197 {
 198         struct rte_eth_link *dst = link;
 199         struct rte_eth_link *src = &(dev->data->dev_link);
 200
 201         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 202                                         *(uint64_t *)src) == 0)
 203                 return -1;
 204
 205         return 0;
 206 }
 207
 208 /**
 209  * Atomically writes the link status information into global
 210  * structure rte_eth_dev.
 211  *
 212  * @param dev
 213  *   - Pointer to the structure rte_eth_dev to read from.
 214  *   - Pointer to the buffer to be saved with the link status.
 215  *
 216  * @return
 217  *   - On success, zero.
 218  *   - On failure, negative value.
 219  */
 220 static inline int
 221 rte_em_dev_atomic_write_link_status(struct rte_eth_dev *dev,
 222                                 struct rte_eth_link *link)
 223 {
 224         struct rte_eth_link *dst = &(dev->data->dev_link);
 225         struct rte_eth_link *src = link;
 226
 227         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
 228                                         *(uint64_t *)src) == 0)
 229                 return -1;
 230
 231         return 0;
 232 }
 233
 234 /**
 235  *  eth_em_dev_is_ich8 - Check for ICH8 device
 236  *  @hw: pointer to the HW structure
 237  *
 238  *  return TRUE for ICH8, otherwise FALSE
 239  **/
 240 static bool
 241 eth_em_dev_is_ich8(struct e1000_hw *hw)
 242 {
 243         DEBUGFUNC("eth_em_dev_is_ich8");
 244
 245         switch (hw->device_id) {
 246         case E1000_DEV_ID_PCH_LPT_I217_LM:
 247         case E1000_DEV_ID_PCH_LPT_I217_V:
 248         case E1000_DEV_ID_PCH_LPTLP_I218_LM:
 249         case E1000_DEV_ID_PCH_LPTLP_I218_V:
 250         case E1000_DEV_ID_PCH_I218_V2:
 251         case E1000_DEV_ID_PCH_I218_LM2:
 252         case E1000_DEV_ID_PCH_I218_V3:
 253         case E1000_DEV_ID_PCH_I218_LM3:
 254                 return 1;
 255         default:
 256                 return 0;
 257         }
 258 }
 259
 260 static int
 261 eth_em_dev_init(struct rte_eth_dev *eth_dev)
 262 {
 263         struct rte_pci_device *pci_dev;
 264         struct e1000_adapter *adapter =
 265                 E1000_DEV_PRIVATE(eth_dev->data->dev_private);
 266         struct e1000_hw *hw =
 267                 E1000_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
 268         struct e1000_vfta * shadow_vfta =
 269                 E1000_DEV_PRIVATE_TO_VFTA(eth_dev->data->dev_private);
 270
 271         pci_dev = eth_dev->pci_dev;
 272
 273         eth_dev->dev_ops = &eth_em_ops;
 274         eth_dev->rx_pkt_burst = (eth_rx_burst_t)&eth_em_recv_pkts;
 275         eth_dev->tx_pkt_burst = (eth_tx_burst_t)&eth_em_xmit_pkts;
 276
 277         /* for secondary processes, we don't initialise any further as primary
 278          * has already done this work. Only check we don't need a different
 279          * RX function */
 280         if (rte_eal_process_type() != RTE_PROC_PRIMARY){
 281                 if (eth_dev->data->scattered_rx)
 282                         eth_dev->rx_pkt_burst =
 283                                 (eth_rx_burst_t)&eth_em_recv_scattered_pkts;
 284                 return 0;
 285         }
 286
 287         rte_eth_copy_pci_info(eth_dev, pci_dev);
 288
 289         hw->hw_addr = (void *)pci_dev->mem_resource[0].addr;
 290         hw->device_id = pci_dev->id.device_id;
 291         adapter->stopped = 0;
 292
 293         /* For ICH8 support we'll need to map the flash memory BAR */
 294         if (eth_em_dev_is_ich8(hw))
 295                 hw->flash_address = (void *)pci_dev->mem_resource[1].addr;
 296
 297         if (e1000_setup_init_funcs(hw, TRUE) != E1000_SUCCESS ||
 298                         em_hw_init(hw) != 0) {
 299                 PMD_INIT_LOG(ERR, "port_id %d vendorID=0x%x deviceID=0x%x: "
 300                         "failed to init HW",
 301                         eth_dev->data->port_id, pci_dev->id.vendor_id,
 302                         pci_dev->id.device_id);
 303                 return -ENODEV;
 304         }
 305
 306         /* Allocate memory for storing MAC addresses */
 307         eth_dev->data->mac_addrs = rte_zmalloc("e1000", ETHER_ADDR_LEN *
 308                         hw->mac.rar_entry_count, 0);
 309         if (eth_dev->data->mac_addrs == NULL) {
 310                 PMD_INIT_LOG(ERR, "Failed to allocate %d bytes needed to "
 311                         "store MAC addresses",
 312                         ETHER_ADDR_LEN * hw->mac.rar_entry_count);
 313                 return -ENOMEM;
 314         }
 315
 316         /* Copy the permanent MAC address */
 317         ether_addr_copy((struct ether_addr *) hw->mac.addr,
 318                 eth_dev->data->mac_addrs);
 319
 320         /* initialize the vfta */
 321         memset(shadow_vfta, 0, sizeof(*shadow_vfta));
 322
 323         PMD_INIT_LOG(DEBUG, "port_id %d vendorID=0x%x deviceID=0x%x",
 324                      eth_dev->data->port_id, pci_dev->id.vendor_id,
 325                      pci_dev->id.device_id);
 326
 327         rte_intr_callback_register(&(pci_dev->intr_handle),
 328                 eth_em_interrupt_handler, (void *)eth_dev);
 329
 330         return 0;
 331 }
 332
 333 static int
 334 eth_em_dev_uninit(struct rte_eth_dev *eth_dev)
 335 {
 336         struct rte_pci_device *pci_dev;
 337         struct e1000_adapter *adapter =
 338                 E1000_DEV_PRIVATE(eth_dev->data->dev_private);
 339
 340         PMD_INIT_FUNC_TRACE();
 341
 342         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 343                 return -EPERM;
 344
 345         pci_dev = eth_dev->pci_dev;
 346
 347         if (adapter->stopped == 0)
 348                 eth_em_close(eth_dev);
 349
 350         eth_dev->dev_ops = NULL;
 351         eth_dev->rx_pkt_burst = NULL;
 352         eth_dev->tx_pkt_burst = NULL;
 353
 354         rte_free(eth_dev->data->mac_addrs);
 355         eth_dev->data->mac_addrs = NULL;
 356
 357         /* disable uio intr before callback unregister */
 358         rte_intr_disable(&(pci_dev->intr_handle));
 359         rte_intr_callback_unregister(&(pci_dev->intr_handle),
 360                 eth_em_interrupt_handler, (void *)eth_dev);
 361
 362         return 0;
 363 }
 364
 365 static struct eth_driver rte_em_pmd = {
 366         .pci_drv = {
 367                 .name = "rte_em_pmd",
 368                 .id_table = pci_id_em_map,
 369                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
 370                         RTE_PCI_DRV_DETACHABLE,
 371         },
 372         .eth_dev_init = eth_em_dev_init,
 373         .eth_dev_uninit = eth_em_dev_uninit,
 374         .dev_private_size = sizeof(struct e1000_adapter),
 375 };
 376
 377 static int
 378 rte_em_pmd_init(const char *name __rte_unused, const char *params __rte_unused)
 379 {
 380         rte_eth_driver_register(&rte_em_pmd);
 381         return 0;
 382 }
 383
 384 static int
 385 em_hw_init(struct e1000_hw *hw)
 386 {
 387         int diag;
 388
 389         diag = hw->mac.ops.init_params(hw);
 390         if (diag != 0) {
 391                 PMD_INIT_LOG(ERR, "MAC Initialization Error");
 392                 return diag;
 393         }
 394         diag = hw->nvm.ops.init_params(hw);
 395         if (diag != 0) {
 396                 PMD_INIT_LOG(ERR, "NVM Initialization Error");
 397                 return diag;
 398         }
 399         diag = hw->phy.ops.init_params(hw);
 400         if (diag != 0) {
 401                 PMD_INIT_LOG(ERR, "PHY Initialization Error");
 402                 return diag;
 403         }
 404         (void) e1000_get_bus_info(hw);
 405
 406         hw->mac.autoneg = 1;
 407         hw->phy.autoneg_wait_to_complete = 0;
 408         hw->phy.autoneg_advertised = E1000_ALL_SPEED_DUPLEX;
 409
 410         e1000_init_script_state_82541(hw, TRUE);
 411         e1000_set_tbi_compatibility_82543(hw, TRUE);
 412
 413         /* Copper options */
 414         if (hw->phy.media_type == e1000_media_type_copper) {
 415                 hw->phy.mdix = 0; /* AUTO_ALL_MODES */
 416                 hw->phy.disable_polarity_correction = 0;
 417                 hw->phy.ms_type = e1000_ms_hw_default;
 418         }
 419
 420         /*
 421          * Start from a known state, this is important in reading the nvm
 422          * and mac from that.
 423          */
 424         e1000_reset_hw(hw);
 425
 426         /* Make sure we have a good EEPROM before we read from it */
 427         if (e1000_validate_nvm_checksum(hw) < 0) {
 428                 /*
 429                  * Some PCI-E parts fail the first check due to
 430                  * the link being in sleep state, call it again,
 431                  * if it fails a second time its a real issue.
 432                  */
 433                 diag = e1000_validate_nvm_checksum(hw);
 434                 if (diag < 0) {
 435                         PMD_INIT_LOG(ERR, "EEPROM checksum invalid");
 436                         goto error;
 437                 }
 438         }
 439
 440         /* Read the permanent MAC address out of the EEPROM */
 441         diag = e1000_read_mac_addr(hw);
 442         if (diag != 0) {
 443                 PMD_INIT_LOG(ERR, "EEPROM error while reading MAC address");
 444                 goto error;
 445         }
 446
 447         /* Now initialize the hardware */
 448         diag = em_hardware_init(hw);
 449         if (diag != 0) {
 450                 PMD_INIT_LOG(ERR, "Hardware initialization failed");
 451                 goto error;
 452         }
 453
 454         hw->mac.get_link_status = 1;
 455
 456         /* Indicate SOL/IDER usage */
 457         diag = e1000_check_reset_block(hw);
 458         if (diag < 0) {
 459                 PMD_INIT_LOG(ERR, "PHY reset is blocked due to "
 460                         "SOL/IDER session");
 461         }
 462         return 0;
 463
 464 error:
 465         em_hw_control_release(hw);
 466         return diag;
 467 }
 468
 469 static int
 470 eth_em_configure(struct rte_eth_dev *dev)
 471 {
 472         struct e1000_interrupt *intr =
 473                 E1000_DEV_PRIVATE_TO_INTR(dev->data->dev_private);
 474
 475         PMD_INIT_FUNC_TRACE();
 476         intr->flags |= E1000_FLAG_NEED_LINK_UPDATE;
 477         PMD_INIT_FUNC_TRACE();
 478
 479         return 0;
 480 }
 481
 482 static void
 483 em_set_pba(struct e1000_hw *hw)
 484 {
 485         uint32_t pba;
 486
 487         /*
 488          * Packet Buffer Allocation (PBA)
 489          * Writing PBA sets the receive portion of the buffer
 490          * the remainder is used for the transmit buffer.
 491          * Devices before the 82547 had a Packet Buffer of 64K.
 492          * After the 82547 the buffer was reduced to 40K.
 493          */
 494         switch (hw->mac.type) {
 495                 case e1000_82547:
 496                 case e1000_82547_rev_2:
 497                 /* 82547: Total Packet Buffer is 40K */
 498                         pba = E1000_PBA_22K; /* 22K for Rx, 18K for Tx */
 499                         break;
 500                 case e1000_82571:
 501                 case e1000_82572:
 502                 case e1000_80003es2lan:
 503                         pba = E1000_PBA_32K; /* 32K for Rx, 16K for Tx */
 504                         break;
 505                 case e1000_82573: /* 82573: Total Packet Buffer is 32K */
 506                         pba = E1000_PBA_12K; /* 12K for Rx, 20K for Tx */
 507                         break;
 508                 case e1000_82574:
 509                 case e1000_82583:
 510                         pba = E1000_PBA_20K; /* 20K for Rx, 20K for Tx */
 511                         break;
 512                 case e1000_ich8lan:
 513                         pba = E1000_PBA_8K;
 514                         break;
 515                 case e1000_ich9lan:
 516                 case e1000_ich10lan:
 517                         pba = E1000_PBA_10K;
 518                         break;
 519                 case e1000_pchlan:
 520                 case e1000_pch2lan:
 521                 case e1000_pch_lpt:
 522                         pba = E1000_PBA_26K;
 523                         break;
 524                 default:
 525                         pba = E1000_PBA_40K; /* 40K for Rx, 24K for Tx */
 526         }
 527
 528         E1000_WRITE_REG(hw, E1000_PBA, pba);
 529 }
 530
 531 static int
 532 eth_em_start(struct rte_eth_dev *dev)
 533 {
 534         struct e1000_adapter *adapter =
 535                 E1000_DEV_PRIVATE(dev->data->dev_private);
 536         struct e1000_hw *hw =
 537                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 538         struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
 539         int ret, mask;
 540         uint32_t intr_vector = 0;
 541
 542         PMD_INIT_FUNC_TRACE();
 543
 544         eth_em_stop(dev);
 545
 546         e1000_power_up_phy(hw);
 547
 548         /* Set default PBA value */
 549         em_set_pba(hw);
 550
 551         /* Put the address into the Receive Address Array */
 552         e1000_rar_set(hw, hw->mac.addr, 0);
 553
 554         /*
 555          * With the 82571 adapter, RAR[0] may be overwritten
 556          * when the other port is reset, we make a duplicate
 557          * in RAR[14] for that eventuality, this assures
 558          * the interface continues to function.
 559          */
 560         if (hw->mac.type == e1000_82571) {
 561                 e1000_set_laa_state_82571(hw, TRUE);
 562                 e1000_rar_set(hw, hw->mac.addr, E1000_RAR_ENTRIES - 1);
 563         }
 564
 565         /* Initialize the hardware */
 566         if (em_hardware_init(hw)) {
 567                 PMD_INIT_LOG(ERR, "Unable to initialize the hardware");
 568                 return -EIO;
 569         }
 570
 571         E1000_WRITE_REG(hw, E1000_VET, ETHER_TYPE_VLAN);
 572
 573         /* Configure for OS presence */
 574         em_init_manageability(hw);
 575
 576         if (dev->data->dev_conf.intr_conf.rxq != 0) {
 577                 intr_vector = dev->data->nb_rx_queues;
 578                 if (rte_intr_efd_enable(intr_handle, intr_vector))
 579                         return -1;
 580         }
 581
 582         if (rte_intr_dp_is_en(intr_handle)) {
 583                 intr_handle->intr_vec =
 584                         rte_zmalloc("intr_vec",
 585                                         dev->data->nb_rx_queues * sizeof(int), 0);
 586                 if (intr_handle->intr_vec == NULL) {
 587                         PMD_INIT_LOG(ERR, "Failed to allocate %d rx_queues"
 588                                                 " intr_vec\n", dev->data->nb_rx_queues);
 589                         return -ENOMEM;
 590                 }
 591
 592                 /* enable rx interrupt */
 593                 em_rxq_intr_enable(hw);
 594         }
 595
 596         eth_em_tx_init(dev);
 597
 598         ret = eth_em_rx_init(dev);
 599         if (ret) {
 600                 PMD_INIT_LOG(ERR, "Unable to initialize RX hardware");
 601                 em_dev_clear_queues(dev);
 602                 return ret;
 603         }
 604
 605         e1000_clear_hw_cntrs_base_generic(hw);
 606
 607         mask = ETH_VLAN_STRIP_MASK | ETH_VLAN_FILTER_MASK | \
 608                         ETH_VLAN_EXTEND_MASK;
 609         eth_em_vlan_offload_set(dev, mask);
 610
 611         /* Set Interrupt Throttling Rate to maximum allowed value. */
 612         E1000_WRITE_REG(hw, E1000_ITR, UINT16_MAX);
 613
 614         /* Setup link speed and duplex */
 615         switch (dev->data->dev_conf.link_speed) {
 616         case ETH_LINK_SPEED_AUTONEG:
 617                 if (dev->data->dev_conf.link_duplex == ETH_LINK_AUTONEG_DUPLEX)
 618                         hw->phy.autoneg_advertised = E1000_ALL_SPEED_DUPLEX;
 619                 else if (dev->data->dev_conf.link_duplex ==
 620                                         ETH_LINK_HALF_DUPLEX)
 621                         hw->phy.autoneg_advertised = E1000_ALL_HALF_DUPLEX;
 622                 else if (dev->data->dev_conf.link_duplex ==
 623                                         ETH_LINK_FULL_DUPLEX)
 624                         hw->phy.autoneg_advertised = E1000_ALL_FULL_DUPLEX;
 625                 else
 626                         goto error_invalid_config;
 627                 break;
 628         case ETH_SPEED_NUM_10M:
 629                 if (dev->data->dev_conf.link_duplex == ETH_LINK_AUTONEG_DUPLEX)
 630                         hw->phy.autoneg_advertised = E1000_ALL_10_SPEED;
 631                 else if (dev->data->dev_conf.link_duplex ==
 632                                         ETH_LINK_HALF_DUPLEX)
 633                         hw->phy.autoneg_advertised = ADVERTISE_10_HALF;
 634                 else if (dev->data->dev_conf.link_duplex ==
 635                                         ETH_LINK_FULL_DUPLEX)
 636                         hw->phy.autoneg_advertised = ADVERTISE_10_FULL;
 637                 else
 638                         goto error_invalid_config;
 639                 break;
 640         case ETH_SPEED_NUM_100M:
 641                 if (dev->data->dev_conf.link_duplex == ETH_LINK_AUTONEG_DUPLEX)
 642                         hw->phy.autoneg_advertised = E1000_ALL_100_SPEED;
 643                 else if (dev->data->dev_conf.link_duplex ==
 644                                         ETH_LINK_HALF_DUPLEX)
 645                         hw->phy.autoneg_advertised = ADVERTISE_100_HALF;
 646                 else if (dev->data->dev_conf.link_duplex ==
 647                                         ETH_LINK_FULL_DUPLEX)
 648                         hw->phy.autoneg_advertised = ADVERTISE_100_FULL;
 649                 else
 650                         goto error_invalid_config;
 651                 break;
 652         case ETH_SPEED_NUM_1G:
 653                 if ((dev->data->dev_conf.link_duplex ==
 654                                 ETH_LINK_AUTONEG_DUPLEX) ||
 655                         (dev->data->dev_conf.link_duplex ==
 656                                         ETH_LINK_FULL_DUPLEX))
 657                         hw->phy.autoneg_advertised = ADVERTISE_1000_FULL;
 658                 else
 659                         goto error_invalid_config;
 660                 break;
 661         case ETH_SPEED_NUM_10G:
 662         default:
 663                 goto error_invalid_config;
 664         }
 665         e1000_setup_link(hw);
 666
 667         if (rte_intr_allow_others(intr_handle)) {
 668                 /* check if lsc interrupt is enabled */
 669                 if (dev->data->dev_conf.intr_conf.lsc != 0) {
 670                         ret = eth_em_interrupt_setup(dev);
 671                         if (ret) {
 672                                 PMD_INIT_LOG(ERR, "Unable to setup interrupts");
 673                                 em_dev_clear_queues(dev);
 674                                 return ret;
 675                         }
 676                 }
 677         } else {
 678                 rte_intr_callback_unregister(intr_handle,
 679                                                 eth_em_interrupt_handler,
 680                                                 (void *)dev);
 681                 if (dev->data->dev_conf.intr_conf.lsc != 0)
 682                         PMD_INIT_LOG(INFO, "lsc won't enable because of"
 683                                      " no intr multiplex\n");
 684         }
 685         /* check if rxq interrupt is enabled */
 686         if (dev->data->dev_conf.intr_conf.rxq != 0)
 687                 eth_em_rxq_interrupt_setup(dev);
 688
 689         rte_intr_enable(intr_handle);
 690
 691         adapter->stopped = 0;
 692
 693         PMD_INIT_LOG(DEBUG, "<<");
 694
 695         return 0;
 696
 697 error_invalid_config:
 698         PMD_INIT_LOG(ERR, "Invalid link_speed/link_duplex (%u/%u) for port %u",
 699                      dev->data->dev_conf.link_speed,
 700                      dev->data->dev_conf.link_duplex, dev->data->port_id);
 701         em_dev_clear_queues(dev);
 702         return -EINVAL;
 703 }
 704
 705 /*********************************************************************
 706  *
 707  *  This routine disables all traffic on the adapter by issuing a
 708  *  global reset on the MAC.
 709  *
 710  **********************************************************************/
 711 static void
 712 eth_em_stop(struct rte_eth_dev *dev)
 713 {
 714         struct rte_eth_link link;
 715         struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 716         struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle;
 717
 718         em_rxq_intr_disable(hw);
 719         em_lsc_intr_disable(hw);
 720
 721         e1000_reset_hw(hw);
 722         if (hw->mac.type >= e1000_82544)
 723                 E1000_WRITE_REG(hw, E1000_WUC, 0);
 724
 725         /* Power down the phy. Needed to make the link go down */
 726         e1000_power_down_phy(hw);
 727
 728         em_dev_clear_queues(dev);
 729
 730         /* clear the recorded link status */
 731         memset(&link, 0, sizeof(link));
 732         rte_em_dev_atomic_write_link_status(dev, &link);
 733
 734         if (!rte_intr_allow_others(intr_handle))
 735                 /* resume to the default handler */
 736                 rte_intr_callback_register(intr_handle,
 737                                            eth_em_interrupt_handler,
 738                                            (void *)dev);
 739
 740         /* Clean datapath event and queue/vec mapping */
 741         rte_intr_efd_disable(intr_handle);
 742         if (intr_handle->intr_vec != NULL) {
 743                 rte_free(intr_handle->intr_vec);
 744                 intr_handle->intr_vec = NULL;
 745         }
 746 }
 747
 748 static void
 749 eth_em_close(struct rte_eth_dev *dev)
 750 {
 751         struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 752         struct e1000_adapter *adapter =
 753                 E1000_DEV_PRIVATE(dev->data->dev_private);
 754
 755         eth_em_stop(dev);
 756         adapter->stopped = 1;
 757         em_dev_free_queues(dev);
 758         e1000_phy_hw_reset(hw);
 759         em_release_manageability(hw);
 760         em_hw_control_release(hw);
 761 }
 762
 763 static int
 764 em_get_rx_buffer_size(struct e1000_hw *hw)
 765 {
 766         uint32_t rx_buf_size;
 767
 768         rx_buf_size = ((E1000_READ_REG(hw, E1000_PBA) & UINT16_MAX) << 10);
 769         return rx_buf_size;
 770 }
 771
 772 /*********************************************************************
 773  *
 774  *  Initialize the hardware
 775  *
 776  **********************************************************************/
 777 static int
 778 em_hardware_init(struct e1000_hw *hw)
 779 {
 780         uint32_t rx_buf_size;
 781         int diag;
 782
 783         /* Issue a global reset */
 784         e1000_reset_hw(hw);
 785
 786         /* Let the firmware know the OS is in control */
 787         em_hw_control_acquire(hw);
 788
 789         /*
 790          * These parameters control the automatic generation (Tx) and
 791          * response (Rx) to Ethernet PAUSE frames.
 792          * - High water mark should allow for at least two standard size (1518)
 793          *   frames to be received after sending an XOFF.
 794          * - Low water mark works best when it is very near the high water mark.
 795          *   This allows the receiver to restart by sending XON when it has
 796          *   drained a bit. Here we use an arbitrary value of 1500 which will
 797          *   restart after one full frame is pulled from the buffer. There
 798          *   could be several smaller frames in the buffer and if so they will
 799          *   not trigger the XON until their total number reduces the buffer
 800          *   by 1500.
 801          * - The pause time is fairly large at 1000 x 512ns = 512 usec.
 802          */
 803         rx_buf_size = em_get_rx_buffer_size(hw);
 804
 805         hw->fc.high_water = rx_buf_size - PMD_ROUNDUP(ETHER_MAX_LEN * 2, 1024);
 806         hw->fc.low_water = hw->fc.high_water - 1500;
 807
 808         if (hw->mac.type == e1000_80003es2lan)
 809                 hw->fc.pause_time = UINT16_MAX;
 810         else
 811                 hw->fc.pause_time = EM_FC_PAUSE_TIME;
 812
 813         hw->fc.send_xon = 1;
 814
 815         /* Set Flow control, use the tunable location if sane */
 816         if (em_fc_setting <= e1000_fc_full)
 817                 hw->fc.requested_mode = em_fc_setting;
 818         else
 819                 hw->fc.requested_mode = e1000_fc_none;
 820
 821         /* Workaround: no TX flow ctrl for PCH */
 822         if (hw->mac.type == e1000_pchlan)
 823                 hw->fc.requested_mode = e1000_fc_rx_pause;
 824
 825         /* Override - settings for PCH2LAN, ya its magic :) */
 826         if (hw->mac.type == e1000_pch2lan) {
 827                 hw->fc.high_water = 0x5C20;
 828                 hw->fc.low_water = 0x5048;
 829                 hw->fc.pause_time = 0x0650;
 830                 hw->fc.refresh_time = 0x0400;
 831         } else if (hw->mac.type == e1000_pch_lpt) {
 832                 hw->fc.requested_mode = e1000_fc_full;
 833         }
 834
 835         diag = e1000_init_hw(hw);
 836         if (diag < 0)
 837                 return diag;
 838         e1000_check_for_link(hw);
 839         return 0;
 840 }
 841
 842 /* This function is based on em_update_stats_counters() in e1000/if_em.c */
 843 static void
 844 eth_em_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *rte_stats)
 845 {
 846         struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 847         struct e1000_hw_stats *stats =
 848                         E1000_DEV_PRIVATE_TO_STATS(dev->data->dev_private);
 849         int pause_frames;
 850
 851         if(hw->phy.media_type == e1000_media_type_copper ||
 852                         (E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
 853                 stats->symerrs += E1000_READ_REG(hw,E1000_SYMERRS);
 854                 stats->sec += E1000_READ_REG(hw, E1000_SEC);
 855         }
 856
 857         stats->crcerrs += E1000_READ_REG(hw, E1000_CRCERRS);
 858         stats->mpc += E1000_READ_REG(hw, E1000_MPC);
 859         stats->scc += E1000_READ_REG(hw, E1000_SCC);
 860         stats->ecol += E1000_READ_REG(hw, E1000_ECOL);
 861
 862         stats->mcc += E1000_READ_REG(hw, E1000_MCC);
 863         stats->latecol += E1000_READ_REG(hw, E1000_LATECOL);
 864         stats->colc += E1000_READ_REG(hw, E1000_COLC);
 865         stats->dc += E1000_READ_REG(hw, E1000_DC);
 866         stats->rlec += E1000_READ_REG(hw, E1000_RLEC);
 867         stats->xonrxc += E1000_READ_REG(hw, E1000_XONRXC);
 868         stats->xontxc += E1000_READ_REG(hw, E1000_XONTXC);
 869
 870         /*
 871          * For watchdog management we need to know if we have been
 872          * paused during the last interval, so capture that here.
 873          */
 874         pause_frames = E1000_READ_REG(hw, E1000_XOFFRXC);
 875         stats->xoffrxc += pause_frames;
 876         stats->xofftxc += E1000_READ_REG(hw, E1000_XOFFTXC);
 877         stats->fcruc += E1000_READ_REG(hw, E1000_FCRUC);
 878         stats->prc64 += E1000_READ_REG(hw, E1000_PRC64);
 879         stats->prc127 += E1000_READ_REG(hw, E1000_PRC127);
 880         stats->prc255 += E1000_READ_REG(hw, E1000_PRC255);
 881         stats->prc511 += E1000_READ_REG(hw, E1000_PRC511);
 882         stats->prc1023 += E1000_READ_REG(hw, E1000_PRC1023);
 883         stats->prc1522 += E1000_READ_REG(hw, E1000_PRC1522);
 884         stats->gprc += E1000_READ_REG(hw, E1000_GPRC);
 885         stats->bprc += E1000_READ_REG(hw, E1000_BPRC);
 886         stats->mprc += E1000_READ_REG(hw, E1000_MPRC);
 887         stats->gptc += E1000_READ_REG(hw, E1000_GPTC);
 888
 889         /*
 890          * For the 64-bit byte counters the low dword must be read first.
 891          * Both registers clear on the read of the high dword.
 892          */
 893
 894         stats->gorc += E1000_READ_REG(hw, E1000_GORCL);
 895         stats->gorc += ((uint64_t)E1000_READ_REG(hw, E1000_GORCH) << 32);
 896         stats->gotc += E1000_READ_REG(hw, E1000_GOTCL);
 897         stats->gotc += ((uint64_t)E1000_READ_REG(hw, E1000_GOTCH) << 32);
 898
 899         stats->rnbc += E1000_READ_REG(hw, E1000_RNBC);
 900         stats->ruc += E1000_READ_REG(hw, E1000_RUC);
 901         stats->rfc += E1000_READ_REG(hw, E1000_RFC);
 902         stats->roc += E1000_READ_REG(hw, E1000_ROC);
 903         stats->rjc += E1000_READ_REG(hw, E1000_RJC);
 904
 905         stats->tor += E1000_READ_REG(hw, E1000_TORH);
 906         stats->tot += E1000_READ_REG(hw, E1000_TOTH);
 907
 908         stats->tpr += E1000_READ_REG(hw, E1000_TPR);
 909         stats->tpt += E1000_READ_REG(hw, E1000_TPT);
 910         stats->ptc64 += E1000_READ_REG(hw, E1000_PTC64);
 911         stats->ptc127 += E1000_READ_REG(hw, E1000_PTC127);
 912         stats->ptc255 += E1000_READ_REG(hw, E1000_PTC255);
 913         stats->ptc511 += E1000_READ_REG(hw, E1000_PTC511);
 914         stats->ptc1023 += E1000_READ_REG(hw, E1000_PTC1023);
 915         stats->ptc1522 += E1000_READ_REG(hw, E1000_PTC1522);
 916         stats->mptc += E1000_READ_REG(hw, E1000_MPTC);
 917         stats->bptc += E1000_READ_REG(hw, E1000_BPTC);
 918
 919         /* Interrupt Counts */
 920
 921         if (hw->mac.type >= e1000_82571) {
 922                 stats->iac += E1000_READ_REG(hw, E1000_IAC);
 923                 stats->icrxptc += E1000_READ_REG(hw, E1000_ICRXPTC);
 924                 stats->icrxatc += E1000_READ_REG(hw, E1000_ICRXATC);
 925                 stats->ictxptc += E1000_READ_REG(hw, E1000_ICTXPTC);
 926                 stats->ictxatc += E1000_READ_REG(hw, E1000_ICTXATC);
 927                 stats->ictxqec += E1000_READ_REG(hw, E1000_ICTXQEC);
 928                 stats->ictxqmtc += E1000_READ_REG(hw, E1000_ICTXQMTC);
 929                 stats->icrxdmtc += E1000_READ_REG(hw, E1000_ICRXDMTC);
 930                 stats->icrxoc += E1000_READ_REG(hw, E1000_ICRXOC);
 931         }
 932
 933         if (hw->mac.type >= e1000_82543) {
 934                 stats->algnerrc += E1000_READ_REG(hw, E1000_ALGNERRC);
 935                 stats->rxerrc += E1000_READ_REG(hw, E1000_RXERRC);
 936                 stats->tncrs += E1000_READ_REG(hw, E1000_TNCRS);
 937                 stats->cexterr += E1000_READ_REG(hw, E1000_CEXTERR);
 938                 stats->tsctc += E1000_READ_REG(hw, E1000_TSCTC);
 939                 stats->tsctfc += E1000_READ_REG(hw, E1000_TSCTFC);
 940         }
 941
 942         if (rte_stats == NULL)
 943                 return;
 944
 945         /* Rx Errors */
 946         rte_stats->imissed = stats->mpc;
 947         rte_stats->ierrors = stats->crcerrs +
 948                              stats->rlec + stats->ruc + stats->roc +
 949                              stats->rxerrc + stats->algnerrc + stats->cexterr;
 950
 951         /* Tx Errors */
 952         rte_stats->oerrors = stats->ecol + stats->latecol;
 953
 954         rte_stats->ipackets = stats->gprc;
 955         rte_stats->opackets = stats->gptc;
 956         rte_stats->ibytes   = stats->gorc;
 957         rte_stats->obytes   = stats->gotc;
 958 }
 959
 960 static void
 961 eth_em_stats_reset(struct rte_eth_dev *dev)
 962 {
 963         struct e1000_hw_stats *hw_stats =
 964                         E1000_DEV_PRIVATE_TO_STATS(dev->data->dev_private);
 965
 966         /* HW registers are cleared on read */
 967         eth_em_stats_get(dev, NULL);
 968
 969         /* Reset software totals */
 970         memset(hw_stats, 0, sizeof(*hw_stats));
 971 }
 972
 973 static int
 974 eth_em_rx_queue_intr_enable(struct rte_eth_dev *dev, __rte_unused uint16_t queue_id)
 975 {
 976         struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 977
 978         em_rxq_intr_enable(hw);
 979         rte_intr_enable(&dev->pci_dev->intr_handle);
 980
 981         return 0;
 982 }
 983
 984 static int
 985 eth_em_rx_queue_intr_disable(struct rte_eth_dev *dev, __rte_unused uint16_t queue_id)
 986 {
 987         struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 988
 989         em_rxq_intr_disable(hw);
 990
 991         return 0;
 992 }
 993
 994 static uint32_t
 995 em_get_max_pktlen(const struct e1000_hw *hw)
 996 {
 997         switch (hw->mac.type) {
 998         case e1000_82571:
 999         case e1000_82572:
1000         case e1000_ich9lan:
1001         case e1000_ich10lan:
1002         case e1000_pch2lan:
1003         case e1000_pch_lpt:
1004         case e1000_82574:
1005         case e1000_80003es2lan: /* 9K Jumbo Frame size */
1006         case e1000_82583:
1007                 return 0x2412;
1008         case e1000_pchlan:
1009                 return 0x1000;
1010         /* Adapters that do not support jumbo frames */
1011         case e1000_ich8lan:
1012                 return ETHER_MAX_LEN;
1013         default:
1014                 return MAX_JUMBO_FRAME_SIZE;
1015         }
1016 }
1017
1018 static void
1019 eth_em_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1020 {
1021         struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1022
1023         dev_info->min_rx_bufsize = 256; /* See BSIZE field of RCTL register. */
1024         dev_info->max_rx_pktlen = em_get_max_pktlen(hw);
1025         dev_info->max_mac_addrs = hw->mac.rar_entry_count;
1026
1027         /*
1028          * Starting with 631xESB hw supports 2 TX/RX queues per port.
1029          * Unfortunatelly, all these nics have just one TX context.
1030          * So we have few choises for TX:
1031          * - Use just one TX queue.
1032          * - Allow cksum offload only for one TX queue.
1033          * - Don't allow TX cksum offload at all.
1034          * For now, option #1 was chosen.
1035          * To use second RX queue we have to use extended RX descriptor
1036          * (Multiple Receive Queues are mutually exclusive with UDP
1037          * fragmentation and are not supported when a legacy receive
1038          * descriptor format is used).
1039          * Which means separate RX routinies - as legacy nics (82540, 82545)
1040          * don't support extended RXD.
1041          * To avoid it we support just one RX queue for now (no RSS).
1042          */
1043
1044         dev_info->max_rx_queues = 1;
1045         dev_info->max_tx_queues = 1;
1046
1047         dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
1048                 .nb_max = E1000_MAX_RING_DESC,
1049                 .nb_min = E1000_MIN_RING_DESC,
1050                 .nb_align = EM_RXD_ALIGN,
1051         };
1052
1053         dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
1054                 .nb_max = E1000_MAX_RING_DESC,
1055                 .nb_min = E1000_MIN_RING_DESC,
1056                 .nb_align = EM_TXD_ALIGN,
1057         };
1058
1059         dev_info->speed_capa = ETH_LINK_SPEED_10M_HD | ETH_LINK_SPEED_10M |
1060                         ETH_LINK_SPEED_100M_HD | ETH_LINK_SPEED_100M |
1061                         ETH_LINK_SPEED_1G;
1062 }
1063
1064 /* return 0 means link status changed, -1 means not changed */
1065 static int
1066 eth_em_link_update(struct rte_eth_dev *dev, int wait_to_complete)
1067 {
1068         struct e1000_hw *hw =
1069                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1070         struct rte_eth_link link, old;
1071         int link_check, count;
1072
1073         link_check = 0;
1074         hw->mac.get_link_status = 1;
1075
1076         /* possible wait-to-complete in up to 9 seconds */
1077         for (count = 0; count < EM_LINK_UPDATE_CHECK_TIMEOUT; count ++) {
1078                 /* Read the real link status */
1079                 switch (hw->phy.media_type) {
1080                 case e1000_media_type_copper:
1081                         /* Do the work to read phy */
1082                         e1000_check_for_link(hw);
1083                         link_check = !hw->mac.get_link_status;
1084                         break;
1085
1086                 case e1000_media_type_fiber:
1087                         e1000_check_for_link(hw);
1088                         link_check = (E1000_READ_REG(hw, E1000_STATUS) &
1089                                         E1000_STATUS_LU);
1090                         break;
1091
1092                 case e1000_media_type_internal_serdes:
1093                         e1000_check_for_link(hw);
1094                         link_check = hw->mac.serdes_has_link;
1095                         break;
1096
1097                 default:
1098                         break;
1099                 }
1100                 if (link_check || wait_to_complete == 0)
1101                         break;
1102                 rte_delay_ms(EM_LINK_UPDATE_CHECK_INTERVAL);
1103         }
1104         memset(&link, 0, sizeof(link));
1105         rte_em_dev_atomic_read_link_status(dev, &link);
1106         old = link;
1107
1108         /* Now we check if a transition has happened */
1109         if (link_check && (link.link_status == ETH_LINK_DOWN)) {
1110                 hw->mac.ops.get_link_up_info(hw, &link.link_speed,
1111                         &link.link_duplex);
1112                 link.link_status = ETH_LINK_UP;
1113         } else if (!link_check && (link.link_status == ETH_LINK_UP)) {
1114                 link.link_speed = 0;
1115                 link.link_duplex = ETH_LINK_HALF_DUPLEX;
1116                 link.link_status = ETH_LINK_DOWN;
1117         }
1118         rte_em_dev_atomic_write_link_status(dev, &link);
1119
1120         /* not changed */
1121         if (old.link_status == link.link_status)
1122                 return -1;
1123
1124         /* changed */
1125         return 0;
1126 }
1127
1128 /*
1129  * em_hw_control_acquire sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
1130  * For ASF and Pass Through versions of f/w this means
1131  * that the driver is loaded. For AMT version type f/w
1132  * this means that the network i/f is open.
1133  */
1134 static void
1135 em_hw_control_acquire(struct e1000_hw *hw)
1136 {
1137         uint32_t ctrl_ext, swsm;
1138
1139         /* Let firmware know the driver has taken over */
1140         if (hw->mac.type == e1000_82573) {
1141                 swsm = E1000_READ_REG(hw, E1000_SWSM);
1142                 E1000_WRITE_REG(hw, E1000_SWSM, swsm | E1000_SWSM_DRV_LOAD);
1143
1144         } else {
1145                 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
1146                 E1000_WRITE_REG(hw, E1000_CTRL_EXT,
1147                         ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
1148         }
1149 }
1150
1151 /*
1152  * em_hw_control_release resets {CTRL_EXTT|FWSM}:DRV_LOAD bit.
1153  * For ASF and Pass Through versions of f/w this means that the
1154  * driver is no longer loaded. For AMT versions of the
1155  * f/w this means that the network i/f is closed.
1156  */
1157 static void
1158 em_hw_control_release(struct e1000_hw *hw)
1159 {
1160         uint32_t ctrl_ext, swsm;
1161
1162         /* Let firmware taken over control of h/w */
1163         if (hw->mac.type == e1000_82573) {
1164                 swsm = E1000_READ_REG(hw, E1000_SWSM);
1165                 E1000_WRITE_REG(hw, E1000_SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
1166         } else {
1167                 ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
1168                 E1000_WRITE_REG(hw, E1000_CTRL_EXT,
1169                         ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
1170         }
1171 }
1172
1173 /*
1174  * Bit of a misnomer, what this really means is
1175  * to enable OS management of the system... aka
1176  * to disable special hardware management features.
1177  */
1178 static void
1179 em_init_manageability(struct e1000_hw *hw)
1180 {
1181         if (e1000_enable_mng_pass_thru(hw)) {
1182                 uint32_t manc2h = E1000_READ_REG(hw, E1000_MANC2H);
1183                 uint32_t manc = E1000_READ_REG(hw, E1000_MANC);
1184
1185                 /* disable hardware interception of ARP */
1186                 manc &= ~(E1000_MANC_ARP_EN);
1187
1188                 /* enable receiving management packets to the host */
1189                 manc |= E1000_MANC_EN_MNG2HOST;
1190                 manc2h |= 1 << 5;  /* Mng Port 623 */
1191                 manc2h |= 1 << 6;  /* Mng Port 664 */
1192                 E1000_WRITE_REG(hw, E1000_MANC2H, manc2h);
1193                 E1000_WRITE_REG(hw, E1000_MANC, manc);
1194         }
1195 }
1196
1197 /*
1198  * Give control back to hardware management
1199  * controller if there is one.
1200  */
1201 static void
1202 em_release_manageability(struct e1000_hw *hw)
1203 {
1204         uint32_t manc;
1205
1206         if (e1000_enable_mng_pass_thru(hw)) {
1207                 manc = E1000_READ_REG(hw, E1000_MANC);
1208
1209                 /* re-enable hardware interception of ARP */
1210                 manc |= E1000_MANC_ARP_EN;
1211                 manc &= ~E1000_MANC_EN_MNG2HOST;
1212
1213                 E1000_WRITE_REG(hw, E1000_MANC, manc);
1214         }
1215 }
1216
1217 static void
1218 eth_em_promiscuous_enable(struct rte_eth_dev *dev)
1219 {
1220         struct e1000_hw *hw =
1221                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1222         uint32_t rctl;
1223
1224         rctl = E1000_READ_REG(hw, E1000_RCTL);
1225         rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
1226         E1000_WRITE_REG(hw, E1000_RCTL, rctl);
1227 }
1228
1229 static void
1230 eth_em_promiscuous_disable(struct rte_eth_dev *dev)
1231 {
1232         struct e1000_hw *hw =
1233                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1234         uint32_t rctl;
1235
1236         rctl = E1000_READ_REG(hw, E1000_RCTL);
1237         rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_SBP);
1238         if (dev->data->all_multicast == 1)
1239                 rctl |= E1000_RCTL_MPE;
1240         else
1241                 rctl &= (~E1000_RCTL_MPE);
1242         E1000_WRITE_REG(hw, E1000_RCTL, rctl);
1243 }
1244
1245 static void
1246 eth_em_allmulticast_enable(struct rte_eth_dev *dev)
1247 {
1248         struct e1000_hw *hw =
1249                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1250         uint32_t rctl;
1251
1252         rctl = E1000_READ_REG(hw, E1000_RCTL);
1253         rctl |= E1000_RCTL_MPE;
1254         E1000_WRITE_REG(hw, E1000_RCTL, rctl);
1255 }
1256
1257 static void
1258 eth_em_allmulticast_disable(struct rte_eth_dev *dev)
1259 {
1260         struct e1000_hw *hw =
1261                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1262         uint32_t rctl;
1263
1264         if (dev->data->promiscuous == 1)
1265                 return; /* must remain in all_multicast mode */
1266         rctl = E1000_READ_REG(hw, E1000_RCTL);
1267         rctl &= (~E1000_RCTL_MPE);
1268         E1000_WRITE_REG(hw, E1000_RCTL, rctl);
1269 }
1270
1271 static int
1272 eth_em_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1273 {
1274         struct e1000_hw *hw =
1275                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1276         struct e1000_vfta * shadow_vfta =
1277                 E1000_DEV_PRIVATE_TO_VFTA(dev->data->dev_private);
1278         uint32_t vfta;
1279         uint32_t vid_idx;
1280         uint32_t vid_bit;
1281
1282         vid_idx = (uint32_t) ((vlan_id >> E1000_VFTA_ENTRY_SHIFT) &
1283                               E1000_VFTA_ENTRY_MASK);
1284         vid_bit = (uint32_t) (1 << (vlan_id & E1000_VFTA_ENTRY_BIT_SHIFT_MASK));
1285         vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, vid_idx);
1286         if (on)
1287                 vfta |= vid_bit;
1288         else
1289                 vfta &= ~vid_bit;
1290         E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, vid_idx, vfta);
1291
1292         /* update local VFTA copy */
1293         shadow_vfta->vfta[vid_idx] = vfta;
1294
1295         return 0;
1296 }
1297
1298 static void
1299 em_vlan_hw_filter_disable(struct rte_eth_dev *dev)
1300 {
1301         struct e1000_hw *hw =
1302                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1303         uint32_t reg;
1304
1305         /* Filter Table Disable */
1306         reg = E1000_READ_REG(hw, E1000_RCTL);
1307         reg &= ~E1000_RCTL_CFIEN;
1308         reg &= ~E1000_RCTL_VFE;
1309         E1000_WRITE_REG(hw, E1000_RCTL, reg);
1310 }
1311
1312 static void
1313 em_vlan_hw_filter_enable(struct rte_eth_dev *dev)
1314 {
1315         struct e1000_hw *hw =
1316                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1317         struct e1000_vfta * shadow_vfta =
1318                 E1000_DEV_PRIVATE_TO_VFTA(dev->data->dev_private);
1319         uint32_t reg;
1320         int i;
1321
1322         /* Filter Table Enable, CFI not used for packet acceptance */
1323         reg = E1000_READ_REG(hw, E1000_RCTL);
1324         reg &= ~E1000_RCTL_CFIEN;
1325         reg |= E1000_RCTL_VFE;
1326         E1000_WRITE_REG(hw, E1000_RCTL, reg);
1327
1328         /* restore vfta from local copy */
1329         for (i = 0; i < IGB_VFTA_SIZE; i++)
1330                 E1000_WRITE_REG_ARRAY(hw, E1000_VFTA, i, shadow_vfta->vfta[i]);
1331 }
1332
1333 static void
1334 em_vlan_hw_strip_disable(struct rte_eth_dev *dev)
1335 {
1336         struct e1000_hw *hw =
1337                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1338         uint32_t reg;
1339
1340         /* VLAN Mode Disable */
1341         reg = E1000_READ_REG(hw, E1000_CTRL);
1342         reg &= ~E1000_CTRL_VME;
1343         E1000_WRITE_REG(hw, E1000_CTRL, reg);
1344
1345 }
1346
1347 static void
1348 em_vlan_hw_strip_enable(struct rte_eth_dev *dev)
1349 {
1350         struct e1000_hw *hw =
1351                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1352         uint32_t reg;
1353
1354         /* VLAN Mode Enable */
1355         reg = E1000_READ_REG(hw, E1000_CTRL);
1356         reg |= E1000_CTRL_VME;
1357         E1000_WRITE_REG(hw, E1000_CTRL, reg);
1358 }
1359
1360 static void
1361 eth_em_vlan_offload_set(struct rte_eth_dev *dev, int mask)
1362 {
1363         if(mask & ETH_VLAN_STRIP_MASK){
1364                 if (dev->data->dev_conf.rxmode.hw_vlan_strip)
1365                         em_vlan_hw_strip_enable(dev);
1366                 else
1367                         em_vlan_hw_strip_disable(dev);
1368         }
1369
1370         if(mask & ETH_VLAN_FILTER_MASK){
1371                 if (dev->data->dev_conf.rxmode.hw_vlan_filter)
1372                         em_vlan_hw_filter_enable(dev);
1373                 else
1374                         em_vlan_hw_filter_disable(dev);
1375         }
1376 }
1377
1378 /*
1379  * It enables the interrupt mask and then enable the interrupt.
1380  *
1381  * @param dev
1382  *  Pointer to struct rte_eth_dev.
1383  *
1384  * @return
1385  *  - On success, zero.
1386  *  - On failure, a negative value.
1387  */
1388 static int
1389 eth_em_interrupt_setup(struct rte_eth_dev *dev)
1390 {
1391         uint32_t regval;
1392         struct e1000_hw *hw =
1393                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1394
1395         /* clear interrupt */
1396         E1000_READ_REG(hw, E1000_ICR);
1397         regval = E1000_READ_REG(hw, E1000_IMS);
1398         E1000_WRITE_REG(hw, E1000_IMS, regval | E1000_ICR_LSC);
1399         return 0;
1400 }
1401
1402 /*
1403  * It clears the interrupt causes and enables the interrupt.
1404  * It will be called once only during nic initialized.
1405  *
1406  * @param dev
1407  *  Pointer to struct rte_eth_dev.
1408  *
1409  * @return
1410  *  - On success, zero.
1411  *  - On failure, a negative value.
1412  */
1413 static int
1414 eth_em_rxq_interrupt_setup(struct rte_eth_dev *dev)
1415 {
1416         struct e1000_hw *hw =
1417         E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1418
1419         E1000_READ_REG(hw, E1000_ICR);
1420         em_rxq_intr_enable(hw);
1421         return 0;
1422 }
1423
1424 /*
1425  * It enable receive packet interrupt.
1426  * @param hw
1427  * Pointer to struct e1000_hw
1428  *
1429  * @return
1430  */
1431 static void
1432 em_rxq_intr_enable(struct e1000_hw *hw)
1433 {
1434         E1000_WRITE_REG(hw, E1000_IMS, E1000_IMS_RXT0);
1435         E1000_WRITE_FLUSH(hw);
1436 }
1437
1438 /*
1439  * It disabled lsc interrupt.
1440  * @param hw
1441  * Pointer to struct e1000_hw
1442  *
1443  * @return
1444  */
1445 static void
1446 em_lsc_intr_disable(struct e1000_hw *hw)
1447 {
1448         E1000_WRITE_REG(hw, E1000_IMC, E1000_IMS_LSC);
1449         E1000_WRITE_FLUSH(hw);
1450 }
1451
1452 /*
1453  * It disabled receive packet interrupt.
1454  * @param hw
1455  * Pointer to struct e1000_hw
1456  *
1457  * @return
1458  */
1459 static void
1460 em_rxq_intr_disable(struct e1000_hw *hw)
1461 {
1462         E1000_READ_REG(hw, E1000_ICR);
1463         E1000_WRITE_REG(hw, E1000_IMC, E1000_IMS_RXT0);
1464         E1000_WRITE_FLUSH(hw);
1465 }
1466
1467 /*
1468  * It reads ICR and gets interrupt causes, check it and set a bit flag
1469  * to update link status.
1470  *
1471  * @param dev
1472  *  Pointer to struct rte_eth_dev.
1473  *
1474  * @return
1475  *  - On success, zero.
1476  *  - On failure, a negative value.
1477  */
1478 static int
1479 eth_em_interrupt_get_status(struct rte_eth_dev *dev)
1480 {
1481         uint32_t icr;
1482         struct e1000_hw *hw =
1483                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1484         struct e1000_interrupt *intr =
1485                 E1000_DEV_PRIVATE_TO_INTR(dev->data->dev_private);
1486
1487         /* read-on-clear nic registers here */
1488         icr = E1000_READ_REG(hw, E1000_ICR);
1489         if (icr & E1000_ICR_LSC) {
1490                 intr->flags |= E1000_FLAG_NEED_LINK_UPDATE;
1491         }
1492
1493         return 0;
1494 }
1495
1496 /*
1497  * It executes link_update after knowing an interrupt is prsent.
1498  *
1499  * @param dev
1500  *  Pointer to struct rte_eth_dev.
1501  *
1502  * @return
1503  *  - On success, zero.
1504  *  - On failure, a negative value.
1505  */
1506 static int
1507 eth_em_interrupt_action(struct rte_eth_dev *dev)
1508 {
1509         struct e1000_hw *hw =
1510                 E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1511         struct e1000_interrupt *intr =
1512                 E1000_DEV_PRIVATE_TO_INTR(dev->data->dev_private);
1513         uint32_t tctl, rctl;
1514         struct rte_eth_link link;
1515         int ret;
1516
1517         if (!(intr->flags & E1000_FLAG_NEED_LINK_UPDATE))
1518                 return -1;
1519
1520         intr->flags &= ~E1000_FLAG_NEED_LINK_UPDATE;
1521         rte_intr_enable(&(dev->pci_dev->intr_handle));
1522
1523         /* set get_link_status to check register later */
1524         hw->mac.get_link_status = 1;
1525         ret = eth_em_link_update(dev, 0);
1526
1527         /* check if link has changed */
1528         if (ret < 0)
1529                 return 0;
1530
1531         memset(&link, 0, sizeof(link));
1532         rte_em_dev_atomic_read_link_status(dev, &link);
1533         if (link.link_status) {
1534                 PMD_INIT_LOG(INFO, " Port %d: Link Up - speed %u Mbps - %s",
1535                              dev->data->port_id, (unsigned)link.link_speed,
1536                              link.link_duplex == ETH_LINK_FULL_DUPLEX ?
1537                              "full-duplex" : "half-duplex");
1538         } else {
1539                 PMD_INIT_LOG(INFO, " Port %d: Link Down", dev->data->port_id);
1540         }
1541         PMD_INIT_LOG(DEBUG, "PCI Address: %04d:%02d:%02d:%d",
1542                      dev->pci_dev->addr.domain, dev->pci_dev->addr.bus,
1543                      dev->pci_dev->addr.devid, dev->pci_dev->addr.function);
1544
1545         tctl = E1000_READ_REG(hw, E1000_TCTL);
1546         rctl = E1000_READ_REG(hw, E1000_RCTL);
1547         if (link.link_status) {
1548                 /* enable Tx/Rx */
1549                 tctl |= E1000_TCTL_EN;
1550                 rctl |= E1000_RCTL_EN;
1551         } else {
1552                 /* disable Tx/Rx */
1553                 tctl &= ~E1000_TCTL_EN;
1554                 rctl &= ~E1000_RCTL_EN;
1555         }
1556         E1000_WRITE_REG(hw, E1000_TCTL, tctl);
1557         E1000_WRITE_REG(hw, E1000_RCTL, rctl);
1558         E1000_WRITE_FLUSH(hw);
1559
1560         return 0;
1561 }
1562
1563 /**
1564  * Interrupt handler which shall be registered at first.
1565  *
1566  * @param handle
1567  *  Pointer to interrupt handle.
1568  * @param param
1569  *  The address of parameter (struct rte_eth_dev *) regsitered before.
1570  *
1571  * @return
1572  *  void
1573  */
1574 static void
1575 eth_em_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1576                                                         void *param)
1577 {
1578         struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
1579
1580         eth_em_interrupt_get_status(dev);
1581         eth_em_interrupt_action(dev);
1582         _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC);
1583 }
1584
1585 static int
1586 eth_em_led_on(struct rte_eth_dev *dev)
1587 {
1588         struct e1000_hw *hw;
1589
1590         hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1591         return e1000_led_on(hw) == E1000_SUCCESS ? 0 : -ENOTSUP;
1592 }
1593
1594 static int
1595 eth_em_led_off(struct rte_eth_dev *dev)
1596 {
1597         struct e1000_hw *hw;
1598
1599         hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1600         return e1000_led_off(hw) == E1000_SUCCESS ? 0 : -ENOTSUP;
1601 }
1602
1603 static int
1604 eth_em_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1605 {
1606         struct e1000_hw *hw;
1607         uint32_t ctrl;
1608         int tx_pause;
1609         int rx_pause;
1610
1611         hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1612         fc_conf->pause_time = hw->fc.pause_time;
1613         fc_conf->high_water = hw->fc.high_water;
1614         fc_conf->low_water = hw->fc.low_water;
1615         fc_conf->send_xon = hw->fc.send_xon;
1616         fc_conf->autoneg = hw->mac.autoneg;
1617
1618         /*
1619          * Return rx_pause and tx_pause status according to actual setting of
1620          * the TFCE and RFCE bits in the CTRL register.
1621          */
1622         ctrl = E1000_READ_REG(hw, E1000_CTRL);
1623         if (ctrl & E1000_CTRL_TFCE)
1624                 tx_pause = 1;
1625         else
1626                 tx_pause = 0;
1627
1628         if (ctrl & E1000_CTRL_RFCE)
1629                 rx_pause = 1;
1630         else
1631                 rx_pause = 0;
1632
1633         if (rx_pause && tx_pause)
1634                 fc_conf->mode = RTE_FC_FULL;
1635         else if (rx_pause)
1636                 fc_conf->mode = RTE_FC_RX_PAUSE;
1637         else if (tx_pause)
1638                 fc_conf->mode = RTE_FC_TX_PAUSE;
1639         else
1640                 fc_conf->mode = RTE_FC_NONE;
1641
1642         return 0;
1643 }
1644
1645 static int
1646 eth_em_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1647 {
1648         struct e1000_hw *hw;
1649         int err;
1650         enum e1000_fc_mode rte_fcmode_2_e1000_fcmode[] = {
1651                 e1000_fc_none,
1652                 e1000_fc_rx_pause,
1653                 e1000_fc_tx_pause,
1654                 e1000_fc_full
1655         };
1656         uint32_t rx_buf_size;
1657         uint32_t max_high_water;
1658         uint32_t rctl;
1659
1660         hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1661         if (fc_conf->autoneg != hw->mac.autoneg)
1662                 return -ENOTSUP;
1663         rx_buf_size = em_get_rx_buffer_size(hw);
1664         PMD_INIT_LOG(DEBUG, "Rx packet buffer size = 0x%x", rx_buf_size);
1665
1666         /* At least reserve one Ethernet frame for watermark */
1667         max_high_water = rx_buf_size - ETHER_MAX_LEN;
1668         if ((fc_conf->high_water > max_high_water) ||
1669             (fc_conf->high_water < fc_conf->low_water)) {
1670                 PMD_INIT_LOG(ERR, "e1000 incorrect high/low water value");
1671                 PMD_INIT_LOG(ERR, "high water must <= 0x%x", max_high_water);
1672                 return -EINVAL;
1673         }
1674
1675         hw->fc.requested_mode = rte_fcmode_2_e1000_fcmode[fc_conf->mode];
1676         hw->fc.pause_time     = fc_conf->pause_time;
1677         hw->fc.high_water     = fc_conf->high_water;
1678         hw->fc.low_water      = fc_conf->low_water;
1679         hw->fc.send_xon       = fc_conf->send_xon;
1680
1681         err = e1000_setup_link_generic(hw);
1682         if (err == E1000_SUCCESS) {
1683
1684                 /* check if we want to forward MAC frames - driver doesn't have native
1685                  * capability to do that, so we'll write the registers ourselves */
1686
1687                 rctl = E1000_READ_REG(hw, E1000_RCTL);
1688
1689                 /* set or clear MFLCN.PMCF bit depending on configuration */
1690                 if (fc_conf->mac_ctrl_frame_fwd != 0)
1691                         rctl |= E1000_RCTL_PMCF;
1692                 else
1693                         rctl &= ~E1000_RCTL_PMCF;
1694
1695                 E1000_WRITE_REG(hw, E1000_RCTL, rctl);
1696                 E1000_WRITE_FLUSH(hw);
1697
1698                 return 0;
1699         }
1700
1701         PMD_INIT_LOG(ERR, "e1000_setup_link_generic = 0x%x", err);
1702         return -EIO;
1703 }
1704
1705 static void
1706 eth_em_rar_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1707                 uint32_t index, __rte_unused uint32_t pool)
1708 {
1709         struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1710
1711         e1000_rar_set(hw, mac_addr->addr_bytes, index);
1712 }
1713
1714 static void
1715 eth_em_rar_clear(struct rte_eth_dev *dev, uint32_t index)
1716 {
1717         uint8_t addr[ETHER_ADDR_LEN];
1718         struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1719
1720         memset(addr, 0, sizeof(addr));
1721
1722         e1000_rar_set(hw, addr, index);
1723 }
1724
1725 static int
1726 eth_em_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
1727 {
1728         struct rte_eth_dev_info dev_info;
1729         struct e1000_hw *hw;
1730         uint32_t frame_size;
1731         uint32_t rctl;
1732
1733         eth_em_infos_get(dev, &dev_info);
1734         frame_size = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN + VLAN_TAG_SIZE;
1735
1736         /* check that mtu is within the allowed range */
1737         if ((mtu < ETHER_MIN_MTU) || (frame_size > dev_info.max_rx_pktlen))
1738                 return -EINVAL;
1739
1740         /* refuse mtu that requires the support of scattered packets when this
1741          * feature has not been enabled before. */
1742         if (!dev->data->scattered_rx &&
1743             frame_size > dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM)
1744                 return -EINVAL;
1745
1746         hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1747         rctl = E1000_READ_REG(hw, E1000_RCTL);
1748
1749         /* switch to jumbo mode if needed */
1750         if (frame_size > ETHER_MAX_LEN) {
1751                 dev->data->dev_conf.rxmode.jumbo_frame = 1;
1752                 rctl |= E1000_RCTL_LPE;
1753         } else {
1754                 dev->data->dev_conf.rxmode.jumbo_frame = 0;
1755                 rctl &= ~E1000_RCTL_LPE;
1756         }
1757         E1000_WRITE_REG(hw, E1000_RCTL, rctl);
1758
1759         /* update max frame size */
1760         dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
1761         return 0;
1762 }
1763
1764 static int
1765 eth_em_set_mc_addr_list(struct rte_eth_dev *dev,
1766                         struct ether_addr *mc_addr_set,
1767                         uint32_t nb_mc_addr)
1768 {
1769         struct e1000_hw *hw;
1770
1771         hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1772         e1000_update_mc_addr_list(hw, (u8 *)mc_addr_set, nb_mc_addr);
1773         return 0;
1774 }
1775
1776 struct rte_driver em_pmd_drv = {
1777         .type = PMD_PDEV,
1778         .init = rte_em_pmd_init,
1779 };
1780
1781 PMD_REGISTER_DRIVER(em_pmd_drv);