drivers/net/igbvf/ethtool.c

   1 /*******************************************************************************
   2
   3   Intel(R) 82576 Virtual Function Linux driver
   4   Copyright(c) 2009 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  24   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  25
  26 *******************************************************************************/
  27
  28 /* ethtool support for igbvf */
  29
  30 #include <linux/netdevice.h>
  31 #include <linux/ethtool.h>
  32 #include <linux/pci.h>
  33 #include <linux/vmalloc.h>
  34 #include <linux/delay.h>
  35
  36 #include "igbvf.h"
  37 #include <linux/if_vlan.h>
  38
  39
  40 struct igbvf_stats {
  41         char stat_string[ETH_GSTRING_LEN];
  42         int sizeof_stat;
  43         int stat_offset;
  44         int base_stat_offset;
  45 };
  46
  47 #define IGBVF_STAT(current, base) \
  48                 sizeof(((struct igbvf_adapter *)0)->current), \
  49                 offsetof(struct igbvf_adapter, current), \
  50                 offsetof(struct igbvf_adapter, base)
  51
  52 static const struct igbvf_stats igbvf_gstrings_stats[] = {
  53         { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) },
  54         { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) },
  55         { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) },
  56         { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) },
  57         { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) },
  58         { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
  59         { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
  60         { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
  61         { "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },
  62         { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) },
  63         { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) },
  64         { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) },
  65         { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) },
  66 };
  67
  68 #define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats)
  69
  70 static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = {
  71         "Link test   (on/offline)"
  72 };
  73
  74 #define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test)
  75
  76 static int igbvf_get_settings(struct net_device *netdev,
  77                               struct ethtool_cmd *ecmd)
  78 {
  79         struct igbvf_adapter *adapter = netdev_priv(netdev);
  80         struct e1000_hw *hw = &adapter->hw;
  81         u32 status;
  82
  83         ecmd->supported   = SUPPORTED_1000baseT_Full;
  84
  85         ecmd->advertising = ADVERTISED_1000baseT_Full;
  86
  87         ecmd->port = -1;
  88         ecmd->transceiver = XCVR_DUMMY1;
  89
  90         status = er32(STATUS);
  91         if (status & E1000_STATUS_LU) {
  92                 if (status & E1000_STATUS_SPEED_1000)
  93                         ecmd->speed = 1000;
  94                 else if (status & E1000_STATUS_SPEED_100)
  95                         ecmd->speed = 100;
  96                 else
  97                         ecmd->speed = 10;
  98
  99                 if (status & E1000_STATUS_FD)
 100                         ecmd->duplex = DUPLEX_FULL;
 101                 else
 102                         ecmd->duplex = DUPLEX_HALF;
 103         } else {
 104                 ecmd->speed = -1;
 105                 ecmd->duplex = -1;
 106         }
 107
 108         ecmd->autoneg = AUTONEG_DISABLE;
 109
 110         return 0;
 111 }
 112
 113 static u32 igbvf_get_link(struct net_device *netdev)
 114 {
 115         return netif_carrier_ok(netdev);
 116 }
 117
 118 static int igbvf_set_settings(struct net_device *netdev,
 119                               struct ethtool_cmd *ecmd)
 120 {
 121         return -EOPNOTSUPP;
 122 }
 123
 124 static void igbvf_get_pauseparam(struct net_device *netdev,
 125                                  struct ethtool_pauseparam *pause)
 126 {
 127         return;
 128 }
 129
 130 static int igbvf_set_pauseparam(struct net_device *netdev,
 131                                 struct ethtool_pauseparam *pause)
 132 {
 133         return -EOPNOTSUPP;
 134 }
 135
 136 static u32 igbvf_get_tx_csum(struct net_device *netdev)
 137 {
 138         return ((netdev->features & NETIF_F_IP_CSUM) != 0);
 139 }
 140
 141 static int igbvf_set_tx_csum(struct net_device *netdev, u32 data)
 142 {
 143         if (data)
 144                 netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
 145         else
 146                 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
 147         return 0;
 148 }
 149
 150 static int igbvf_set_tso(struct net_device *netdev, u32 data)
 151 {
 152         struct igbvf_adapter *adapter = netdev_priv(netdev);
 153         int i;
 154         struct net_device *v_netdev;
 155
 156         if (data) {
 157                 netdev->features |= NETIF_F_TSO;
 158                 netdev->features |= NETIF_F_TSO6;
 159         } else {
 160                 netdev->features &= ~NETIF_F_TSO;
 161                 netdev->features &= ~NETIF_F_TSO6;
 162                 /* disable TSO on all VLANs if they're present */
 163                 if (!adapter->vlgrp)
 164                         goto tso_out;
 165                 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
 166                         v_netdev = vlan_group_get_device(adapter->vlgrp, i);
 167                         if (!v_netdev)
 168                                 continue;
 169
 170                         v_netdev->features &= ~NETIF_F_TSO;
 171                         v_netdev->features &= ~NETIF_F_TSO6;
 172                         vlan_group_set_device(adapter->vlgrp, i, v_netdev);
 173                 }
 174         }
 175
 176 tso_out:
 177         dev_info(&adapter->pdev->dev, "TSO is %s\n",
 178                  data ? "Enabled" : "Disabled");
 179         adapter->flags |= FLAG_TSO_FORCE;
 180         return 0;
 181 }
 182
 183 static u32 igbvf_get_msglevel(struct net_device *netdev)
 184 {
 185         struct igbvf_adapter *adapter = netdev_priv(netdev);
 186         return adapter->msg_enable;
 187 }
 188
 189 static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
 190 {
 191         struct igbvf_adapter *adapter = netdev_priv(netdev);
 192         adapter->msg_enable = data;
 193 }
 194
 195 static int igbvf_get_regs_len(struct net_device *netdev)
 196 {
 197 #define IGBVF_REGS_LEN 8
 198         return IGBVF_REGS_LEN * sizeof(u32);
 199 }
 200
 201 static void igbvf_get_regs(struct net_device *netdev,
 202                            struct ethtool_regs *regs, void *p)
 203 {
 204         struct igbvf_adapter *adapter = netdev_priv(netdev);
 205         struct e1000_hw *hw = &adapter->hw;
 206         u32 *regs_buff = p;
 207         u8 revision_id;
 208
 209         memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
 210
 211         pci_read_config_byte(adapter->pdev, PCI_REVISION_ID, &revision_id);
 212
 213         regs->version = (1 << 24) | (revision_id << 16) | adapter->pdev->device;
 214
 215         regs_buff[0] = er32(CTRL);
 216         regs_buff[1] = er32(STATUS);
 217
 218         regs_buff[2] = er32(RDLEN(0));
 219         regs_buff[3] = er32(RDH(0));
 220         regs_buff[4] = er32(RDT(0));
 221
 222         regs_buff[5] = er32(TDLEN(0));
 223         regs_buff[6] = er32(TDH(0));
 224         regs_buff[7] = er32(TDT(0));
 225 }
 226
 227 static int igbvf_get_eeprom_len(struct net_device *netdev)
 228 {
 229         return 0;
 230 }
 231
 232 static int igbvf_get_eeprom(struct net_device *netdev,
 233                             struct ethtool_eeprom *eeprom, u8 *bytes)
 234 {
 235         return -EOPNOTSUPP;
 236 }
 237
 238 static int igbvf_set_eeprom(struct net_device *netdev,
 239                             struct ethtool_eeprom *eeprom, u8 *bytes)
 240 {
 241         return -EOPNOTSUPP;
 242 }
 243
 244 static void igbvf_get_drvinfo(struct net_device *netdev,
 245                               struct ethtool_drvinfo *drvinfo)
 246 {
 247         struct igbvf_adapter *adapter = netdev_priv(netdev);
 248         char firmware_version[32] = "N/A";
 249
 250         strncpy(drvinfo->driver,  igbvf_driver_name, 32);
 251         strncpy(drvinfo->version, igbvf_driver_version, 32);
 252         strncpy(drvinfo->fw_version, firmware_version, 32);
 253         strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
 254         drvinfo->regdump_len = igbvf_get_regs_len(netdev);
 255         drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
 256 }
 257
 258 static void igbvf_get_ringparam(struct net_device *netdev,
 259                                 struct ethtool_ringparam *ring)
 260 {
 261         struct igbvf_adapter *adapter = netdev_priv(netdev);
 262         struct igbvf_ring *tx_ring = adapter->tx_ring;
 263         struct igbvf_ring *rx_ring = adapter->rx_ring;
 264
 265         ring->rx_max_pending = IGBVF_MAX_RXD;
 266         ring->tx_max_pending = IGBVF_MAX_TXD;
 267         ring->rx_mini_max_pending = 0;
 268         ring->rx_jumbo_max_pending = 0;
 269         ring->rx_pending = rx_ring->count;
 270         ring->tx_pending = tx_ring->count;
 271         ring->rx_mini_pending = 0;
 272         ring->rx_jumbo_pending = 0;
 273 }
 274
 275 static int igbvf_set_ringparam(struct net_device *netdev,
 276                                struct ethtool_ringparam *ring)
 277 {
 278         struct igbvf_adapter *adapter = netdev_priv(netdev);
 279         struct igbvf_ring *temp_ring;
 280         int err;
 281         u32 new_rx_count, new_tx_count;
 282
 283         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 284                 return -EINVAL;
 285
 286         new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD);
 287         new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD);
 288         new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
 289
 290         new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD);
 291         new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD);
 292         new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
 293
 294         if ((new_tx_count == adapter->tx_ring->count) &&
 295             (new_rx_count == adapter->rx_ring->count)) {
 296                 /* nothing to do */
 297                 return 0;
 298         }
 299
 300         temp_ring = vmalloc(sizeof(struct igbvf_ring));
 301         if (!temp_ring)
 302                 return -ENOMEM;
 303
 304         while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
 305                 msleep(1);
 306
 307         if (netif_running(adapter->netdev))
 308                 igbvf_down(adapter);
 309
 310         /*
 311          * We can't just free everything and then setup again,
 312          * because the ISRs in MSI-X mode get passed pointers
 313          * to the tx and rx ring structs.
 314          */
 315         if (new_tx_count != adapter->tx_ring->count) {
 316                 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
 317
 318                 temp_ring->count = new_tx_count;
 319                 err = igbvf_setup_tx_resources(adapter, temp_ring);
 320                 if (err)
 321                         goto err_setup;
 322
 323                 igbvf_free_tx_resources(adapter->tx_ring);
 324
 325                 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
 326         }
 327
 328         if (new_rx_count != adapter->rx_ring->count) {
 329                 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
 330
 331                 temp_ring->count = new_rx_count;
 332                 err = igbvf_setup_rx_resources(adapter, temp_ring);
 333                 if (err)
 334                         goto err_setup;
 335
 336                 igbvf_free_rx_resources(adapter->rx_ring);
 337
 338                 memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring));
 339         }
 340
 341         err = 0;
 342 err_setup:
 343         if (netif_running(adapter->netdev))
 344                 igbvf_up(adapter);
 345
 346         clear_bit(__IGBVF_RESETTING, &adapter->state);
 347         vfree(temp_ring);
 348         return err;
 349 }
 350
 351 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
 352 {
 353         struct e1000_hw *hw = &adapter->hw;
 354         *data = 0;
 355
 356         hw->mac.ops.check_for_link(hw);
 357
 358         if (!(er32(STATUS) & E1000_STATUS_LU))
 359                 *data = 1;
 360
 361         return *data;
 362 }
 363
 364 static int igbvf_get_self_test_count(struct net_device *netdev)
 365 {
 366         return IGBVF_TEST_LEN;
 367 }
 368
 369 static int igbvf_get_stats_count(struct net_device *netdev)
 370 {
 371         return IGBVF_GLOBAL_STATS_LEN;
 372 }
 373
 374 static void igbvf_diag_test(struct net_device *netdev,
 375                             struct ethtool_test *eth_test, u64 *data)
 376 {
 377         struct igbvf_adapter *adapter = netdev_priv(netdev);
 378
 379         set_bit(__IGBVF_TESTING, &adapter->state);
 380
 381         /*
 382          * Link test performed before hardware reset so autoneg doesn't
 383          * interfere with test result
 384          */
 385         if (igbvf_link_test(adapter, &data[0]))
 386                 eth_test->flags |= ETH_TEST_FL_FAILED;
 387
 388         clear_bit(__IGBVF_TESTING, &adapter->state);
 389         msleep_interruptible(4 * 1000);
 390 }
 391
 392 static void igbvf_get_wol(struct net_device *netdev,
 393                           struct ethtool_wolinfo *wol)
 394 {
 395         wol->supported = 0;
 396         wol->wolopts = 0;
 397
 398         return;
 399 }
 400
 401 static int igbvf_set_wol(struct net_device *netdev,
 402                          struct ethtool_wolinfo *wol)
 403 {
 404         return -EOPNOTSUPP;
 405 }
 406
 407 static int igbvf_phys_id(struct net_device *netdev, u32 data)
 408 {
 409         return 0;
 410 }
 411
 412 static int igbvf_get_coalesce(struct net_device *netdev,
 413                               struct ethtool_coalesce *ec)
 414 {
 415         struct igbvf_adapter *adapter = netdev_priv(netdev);
 416
 417         if (adapter->itr_setting <= 3)
 418                 ec->rx_coalesce_usecs = adapter->itr_setting;
 419         else
 420                 ec->rx_coalesce_usecs = adapter->itr_setting >> 2;
 421
 422         return 0;
 423 }
 424
 425 static int igbvf_set_coalesce(struct net_device *netdev,
 426                               struct ethtool_coalesce *ec)
 427 {
 428         struct igbvf_adapter *adapter = netdev_priv(netdev);
 429         struct e1000_hw *hw = &adapter->hw;
 430
 431         if ((ec->rx_coalesce_usecs > IGBVF_MAX_ITR_USECS) ||
 432             ((ec->rx_coalesce_usecs > 3) &&
 433              (ec->rx_coalesce_usecs < IGBVF_MIN_ITR_USECS)) ||
 434             (ec->rx_coalesce_usecs == 2))
 435                 return -EINVAL;
 436
 437         /* convert to rate of irq's per second */
 438         if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) {
 439                 adapter->itr = IGBVF_START_ITR;
 440                 adapter->itr_setting = ec->rx_coalesce_usecs;
 441         } else {
 442                 adapter->itr = ec->rx_coalesce_usecs << 2;
 443                 adapter->itr_setting = adapter->itr;
 444         }
 445
 446         writel(adapter->itr,
 447                hw->hw_addr + adapter->rx_ring[0].itr_register);
 448
 449         return 0;
 450 }
 451
 452 static int igbvf_nway_reset(struct net_device *netdev)
 453 {
 454         struct igbvf_adapter *adapter = netdev_priv(netdev);
 455         if (netif_running(netdev))
 456                 igbvf_reinit_locked(adapter);
 457         return 0;
 458 }
 459
 460
 461 static void igbvf_get_ethtool_stats(struct net_device *netdev,
 462                                     struct ethtool_stats *stats,
 463                                     u64 *data)
 464 {
 465         struct igbvf_adapter *adapter = netdev_priv(netdev);
 466         int i;
 467
 468         igbvf_update_stats(adapter);
 469         for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
 470                 char *p = (char *)adapter +
 471                           igbvf_gstrings_stats[i].stat_offset;
 472                 char *b = (char *)adapter +
 473                           igbvf_gstrings_stats[i].base_stat_offset;
 474                 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
 475                             sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
 476                             (*(u32 *)p - *(u32 *)b));
 477         }
 478
 479 }
 480
 481 static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
 482                               u8 *data)
 483 {
 484         u8 *p = data;
 485         int i;
 486
 487         switch (stringset) {
 488         case ETH_SS_TEST:
 489                 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
 490                 break;
 491         case ETH_SS_STATS:
 492                 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
 493                         memcpy(p, igbvf_gstrings_stats[i].stat_string,
 494                                ETH_GSTRING_LEN);
 495                         p += ETH_GSTRING_LEN;
 496                 }
 497                 break;
 498         }
 499 }
 500
 501 static const struct ethtool_ops igbvf_ethtool_ops = {
 502         .get_settings           = igbvf_get_settings,
 503         .set_settings           = igbvf_set_settings,
 504         .get_drvinfo            = igbvf_get_drvinfo,
 505         .get_regs_len           = igbvf_get_regs_len,
 506         .get_regs               = igbvf_get_regs,
 507         .get_wol                = igbvf_get_wol,
 508         .set_wol                = igbvf_set_wol,
 509         .get_msglevel           = igbvf_get_msglevel,
 510         .set_msglevel           = igbvf_set_msglevel,
 511         .nway_reset             = igbvf_nway_reset,
 512         .get_link               = igbvf_get_link,
 513         .get_eeprom_len         = igbvf_get_eeprom_len,
 514         .get_eeprom             = igbvf_get_eeprom,
 515         .set_eeprom             = igbvf_set_eeprom,
 516         .get_ringparam          = igbvf_get_ringparam,
 517         .set_ringparam          = igbvf_set_ringparam,
 518         .get_pauseparam         = igbvf_get_pauseparam,
 519         .set_pauseparam         = igbvf_set_pauseparam,
 520         .get_tx_csum            = igbvf_get_tx_csum,
 521         .set_tx_csum            = igbvf_set_tx_csum,
 522         .get_sg                 = ethtool_op_get_sg,
 523         .set_sg                 = ethtool_op_set_sg,
 524         .get_tso                = ethtool_op_get_tso,
 525         .set_tso                = igbvf_set_tso,
 526         .self_test              = igbvf_diag_test,
 527         .get_strings            = igbvf_get_strings,
 528         .phys_id                = igbvf_phys_id,
 529         .get_ethtool_stats      = igbvf_get_ethtool_stats,
 530         .self_test_count        = igbvf_get_self_test_count,
 531         .get_stats_count        = igbvf_get_stats_count,
 532         .get_coalesce           = igbvf_get_coalesce,
 533         .set_coalesce           = igbvf_set_coalesce,
 534 };
 535
 536 void igbvf_set_ethtool_ops(struct net_device *netdev)
 537 {
 538         /* have to "undeclare" const on this struct to remove warnings */
 539         SET_ETHTOOL_OPS(netdev, (struct ethtool_ops *)&igbvf_ethtool_ops);
 540 }