drivers/net/igbvf/ethtool.c

   1 /*******************************************************************************
   2
   3   Intel(R) 82576 Virtual Function Linux driver
   4   Copyright(c) 2009 - 2010 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_rx_csum(struct net_device *netdev)
 137 {
 138         struct igbvf_adapter *adapter = netdev_priv(netdev);
 139         return !(adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED);
 140 }
 141
 142 static int igbvf_set_rx_csum(struct net_device *netdev, u32 data)
 143 {
 144         struct igbvf_adapter *adapter = netdev_priv(netdev);
 145
 146         if (data)
 147                 adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED;
 148         else
 149                 adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED;
 150
 151         return 0;
 152 }
 153
 154 static u32 igbvf_get_tx_csum(struct net_device *netdev)
 155 {
 156         return (netdev->features & NETIF_F_IP_CSUM) != 0;
 157 }
 158
 159 static int igbvf_set_tx_csum(struct net_device *netdev, u32 data)
 160 {
 161         if (data)
 162                 netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
 163         else
 164                 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
 165         return 0;
 166 }
 167
 168 static int igbvf_set_tso(struct net_device *netdev, u32 data)
 169 {
 170         struct igbvf_adapter *adapter = netdev_priv(netdev);
 171
 172         if (data) {
 173                 netdev->features |= NETIF_F_TSO;
 174                 netdev->features |= NETIF_F_TSO6;
 175         } else {
 176                 netdev->features &= ~NETIF_F_TSO;
 177                 netdev->features &= ~NETIF_F_TSO6;
 178         }
 179
 180         dev_info(&adapter->pdev->dev, "TSO is %s\n",
 181                  data ? "Enabled" : "Disabled");
 182         return 0;
 183 }
 184
 185 static u32 igbvf_get_msglevel(struct net_device *netdev)
 186 {
 187         struct igbvf_adapter *adapter = netdev_priv(netdev);
 188         return adapter->msg_enable;
 189 }
 190
 191 static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
 192 {
 193         struct igbvf_adapter *adapter = netdev_priv(netdev);
 194         adapter->msg_enable = data;
 195 }
 196
 197 static int igbvf_get_regs_len(struct net_device *netdev)
 198 {
 199 #define IGBVF_REGS_LEN 8
 200         return IGBVF_REGS_LEN * sizeof(u32);
 201 }
 202
 203 static void igbvf_get_regs(struct net_device *netdev,
 204                            struct ethtool_regs *regs, void *p)
 205 {
 206         struct igbvf_adapter *adapter = netdev_priv(netdev);
 207         struct e1000_hw *hw = &adapter->hw;
 208         u32 *regs_buff = p;
 209         u8 revision_id;
 210
 211         memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
 212
 213         pci_read_config_byte(adapter->pdev, PCI_REVISION_ID, &revision_id);
 214
 215         regs->version = (1 << 24) | (revision_id << 16) | adapter->pdev->device;
 216
 217         regs_buff[0] = er32(CTRL);
 218         regs_buff[1] = er32(STATUS);
 219
 220         regs_buff[2] = er32(RDLEN(0));
 221         regs_buff[3] = er32(RDH(0));
 222         regs_buff[4] = er32(RDT(0));
 223
 224         regs_buff[5] = er32(TDLEN(0));
 225         regs_buff[6] = er32(TDH(0));
 226         regs_buff[7] = er32(TDT(0));
 227 }
 228
 229 static int igbvf_get_eeprom_len(struct net_device *netdev)
 230 {
 231         return 0;
 232 }
 233
 234 static int igbvf_get_eeprom(struct net_device *netdev,
 235                             struct ethtool_eeprom *eeprom, u8 *bytes)
 236 {
 237         return -EOPNOTSUPP;
 238 }
 239
 240 static int igbvf_set_eeprom(struct net_device *netdev,
 241                             struct ethtool_eeprom *eeprom, u8 *bytes)
 242 {
 243         return -EOPNOTSUPP;
 244 }
 245
 246 static void igbvf_get_drvinfo(struct net_device *netdev,
 247                               struct ethtool_drvinfo *drvinfo)
 248 {
 249         struct igbvf_adapter *adapter = netdev_priv(netdev);
 250         char firmware_version[32] = "N/A";
 251
 252         strncpy(drvinfo->driver,  igbvf_driver_name, 32);
 253         strncpy(drvinfo->version, igbvf_driver_version, 32);
 254         strncpy(drvinfo->fw_version, firmware_version, 32);
 255         strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
 256         drvinfo->regdump_len = igbvf_get_regs_len(netdev);
 257         drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
 258 }
 259
 260 static void igbvf_get_ringparam(struct net_device *netdev,
 261                                 struct ethtool_ringparam *ring)
 262 {
 263         struct igbvf_adapter *adapter = netdev_priv(netdev);
 264         struct igbvf_ring *tx_ring = adapter->tx_ring;
 265         struct igbvf_ring *rx_ring = adapter->rx_ring;
 266
 267         ring->rx_max_pending = IGBVF_MAX_RXD;
 268         ring->tx_max_pending = IGBVF_MAX_TXD;
 269         ring->rx_mini_max_pending = 0;
 270         ring->rx_jumbo_max_pending = 0;
 271         ring->rx_pending = rx_ring->count;
 272         ring->tx_pending = tx_ring->count;
 273         ring->rx_mini_pending = 0;
 274         ring->rx_jumbo_pending = 0;
 275 }
 276
 277 static int igbvf_set_ringparam(struct net_device *netdev,
 278                                struct ethtool_ringparam *ring)
 279 {
 280         struct igbvf_adapter *adapter = netdev_priv(netdev);
 281         struct igbvf_ring *temp_ring;
 282         int err = 0;
 283         u32 new_rx_count, new_tx_count;
 284
 285         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 286                 return -EINVAL;
 287
 288         new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD);
 289         new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD);
 290         new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
 291
 292         new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD);
 293         new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD);
 294         new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
 295
 296         if ((new_tx_count == adapter->tx_ring->count) &&
 297             (new_rx_count == adapter->rx_ring->count)) {
 298                 /* nothing to do */
 299                 return 0;
 300         }
 301
 302         while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
 303                 msleep(1);
 304
 305         if (!netif_running(adapter->netdev)) {
 306                 adapter->tx_ring->count = new_tx_count;
 307                 adapter->rx_ring->count = new_rx_count;
 308                 goto clear_reset;
 309         }
 310
 311         temp_ring = vmalloc(sizeof(struct igbvf_ring));
 312         if (!temp_ring) {
 313                 err = -ENOMEM;
 314                 goto clear_reset;
 315         }
 316
 317         igbvf_down(adapter);
 318
 319         /*
 320          * We can't just free everything and then setup again,
 321          * because the ISRs in MSI-X mode get passed pointers
 322          * to the tx and rx ring structs.
 323          */
 324         if (new_tx_count != adapter->tx_ring->count) {
 325                 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
 326
 327                 temp_ring->count = new_tx_count;
 328                 err = igbvf_setup_tx_resources(adapter, temp_ring);
 329                 if (err)
 330                         goto err_setup;
 331
 332                 igbvf_free_tx_resources(adapter->tx_ring);
 333
 334                 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
 335         }
 336
 337         if (new_rx_count != adapter->rx_ring->count) {
 338                 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
 339
 340                 temp_ring->count = new_rx_count;
 341                 err = igbvf_setup_rx_resources(adapter, temp_ring);
 342                 if (err)
 343                         goto err_setup;
 344
 345                 igbvf_free_rx_resources(adapter->rx_ring);
 346
 347                 memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring));
 348         }
 349 err_setup:
 350         igbvf_up(adapter);
 351         vfree(temp_ring);
 352 clear_reset:
 353         clear_bit(__IGBVF_RESETTING, &adapter->state);
 354         return err;
 355 }
 356
 357 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
 358 {
 359         struct e1000_hw *hw = &adapter->hw;
 360         *data = 0;
 361
 362         hw->mac.ops.check_for_link(hw);
 363
 364         if (!(er32(STATUS) & E1000_STATUS_LU))
 365                 *data = 1;
 366
 367         return *data;
 368 }
 369
 370 static void igbvf_diag_test(struct net_device *netdev,
 371                             struct ethtool_test *eth_test, u64 *data)
 372 {
 373         struct igbvf_adapter *adapter = netdev_priv(netdev);
 374
 375         set_bit(__IGBVF_TESTING, &adapter->state);
 376
 377         /*
 378          * Link test performed before hardware reset so autoneg doesn't
 379          * interfere with test result
 380          */
 381         if (igbvf_link_test(adapter, &data[0]))
 382                 eth_test->flags |= ETH_TEST_FL_FAILED;
 383
 384         clear_bit(__IGBVF_TESTING, &adapter->state);
 385         msleep_interruptible(4 * 1000);
 386 }
 387
 388 static void igbvf_get_wol(struct net_device *netdev,
 389                           struct ethtool_wolinfo *wol)
 390 {
 391         wol->supported = 0;
 392         wol->wolopts = 0;
 393 }
 394
 395 static int igbvf_set_wol(struct net_device *netdev,
 396                          struct ethtool_wolinfo *wol)
 397 {
 398         return -EOPNOTSUPP;
 399 }
 400
 401 static int igbvf_phys_id(struct net_device *netdev, u32 data)
 402 {
 403         return 0;
 404 }
 405
 406 static int igbvf_get_coalesce(struct net_device *netdev,
 407                               struct ethtool_coalesce *ec)
 408 {
 409         struct igbvf_adapter *adapter = netdev_priv(netdev);
 410
 411         if (adapter->itr_setting <= 3)
 412                 ec->rx_coalesce_usecs = adapter->itr_setting;
 413         else
 414                 ec->rx_coalesce_usecs = adapter->itr_setting >> 2;
 415
 416         return 0;
 417 }
 418
 419 static int igbvf_set_coalesce(struct net_device *netdev,
 420                               struct ethtool_coalesce *ec)
 421 {
 422         struct igbvf_adapter *adapter = netdev_priv(netdev);
 423         struct e1000_hw *hw = &adapter->hw;
 424
 425         if ((ec->rx_coalesce_usecs > IGBVF_MAX_ITR_USECS) ||
 426             ((ec->rx_coalesce_usecs > 3) &&
 427              (ec->rx_coalesce_usecs < IGBVF_MIN_ITR_USECS)) ||
 428             (ec->rx_coalesce_usecs == 2))
 429                 return -EINVAL;
 430
 431         /* convert to rate of irq's per second */
 432         if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) {
 433                 adapter->itr = IGBVF_START_ITR;
 434                 adapter->itr_setting = ec->rx_coalesce_usecs;
 435         } else {
 436                 adapter->itr = ec->rx_coalesce_usecs << 2;
 437                 adapter->itr_setting = adapter->itr;
 438         }
 439
 440         writel(adapter->itr,
 441                hw->hw_addr + adapter->rx_ring[0].itr_register);
 442
 443         return 0;
 444 }
 445
 446 static int igbvf_nway_reset(struct net_device *netdev)
 447 {
 448         struct igbvf_adapter *adapter = netdev_priv(netdev);
 449         if (netif_running(netdev))
 450                 igbvf_reinit_locked(adapter);
 451         return 0;
 452 }
 453
 454
 455 static void igbvf_get_ethtool_stats(struct net_device *netdev,
 456                                     struct ethtool_stats *stats,
 457                                     u64 *data)
 458 {
 459         struct igbvf_adapter *adapter = netdev_priv(netdev);
 460         int i;
 461
 462         igbvf_update_stats(adapter);
 463         for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
 464                 char *p = (char *)adapter +
 465                           igbvf_gstrings_stats[i].stat_offset;
 466                 char *b = (char *)adapter +
 467                           igbvf_gstrings_stats[i].base_stat_offset;
 468                 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
 469                             sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
 470                             (*(u32 *)p - *(u32 *)b));
 471         }
 472
 473 }
 474
 475 static int igbvf_get_sset_count(struct net_device *dev, int stringset)
 476 {
 477         switch(stringset) {
 478         case ETH_SS_TEST:
 479                 return IGBVF_TEST_LEN;
 480         case ETH_SS_STATS:
 481                 return IGBVF_GLOBAL_STATS_LEN;
 482         default:
 483                 return -EINVAL;
 484         }
 485 }
 486
 487 static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
 488                               u8 *data)
 489 {
 490         u8 *p = data;
 491         int i;
 492
 493         switch (stringset) {
 494         case ETH_SS_TEST:
 495                 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
 496                 break;
 497         case ETH_SS_STATS:
 498                 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
 499                         memcpy(p, igbvf_gstrings_stats[i].stat_string,
 500                                ETH_GSTRING_LEN);
 501                         p += ETH_GSTRING_LEN;
 502                 }
 503                 break;
 504         }
 505 }
 506
 507 static const struct ethtool_ops igbvf_ethtool_ops = {
 508         .get_settings           = igbvf_get_settings,
 509         .set_settings           = igbvf_set_settings,
 510         .get_drvinfo            = igbvf_get_drvinfo,
 511         .get_regs_len           = igbvf_get_regs_len,
 512         .get_regs               = igbvf_get_regs,
 513         .get_wol                = igbvf_get_wol,
 514         .set_wol                = igbvf_set_wol,
 515         .get_msglevel           = igbvf_get_msglevel,
 516         .set_msglevel           = igbvf_set_msglevel,
 517         .nway_reset             = igbvf_nway_reset,
 518         .get_link               = igbvf_get_link,
 519         .get_eeprom_len         = igbvf_get_eeprom_len,
 520         .get_eeprom             = igbvf_get_eeprom,
 521         .set_eeprom             = igbvf_set_eeprom,
 522         .get_ringparam          = igbvf_get_ringparam,
 523         .set_ringparam          = igbvf_set_ringparam,
 524         .get_pauseparam         = igbvf_get_pauseparam,
 525         .set_pauseparam         = igbvf_set_pauseparam,
 526         .get_rx_csum            = igbvf_get_rx_csum,
 527         .set_rx_csum            = igbvf_set_rx_csum,
 528         .get_tx_csum            = igbvf_get_tx_csum,
 529         .set_tx_csum            = igbvf_set_tx_csum,
 530         .get_sg                 = ethtool_op_get_sg,
 531         .set_sg                 = ethtool_op_set_sg,
 532         .get_tso                = ethtool_op_get_tso,
 533         .set_tso                = igbvf_set_tso,
 534         .self_test              = igbvf_diag_test,
 535         .get_sset_count         = igbvf_get_sset_count,
 536         .get_strings            = igbvf_get_strings,
 537         .phys_id                = igbvf_phys_id,
 538         .get_ethtool_stats      = igbvf_get_ethtool_stats,
 539         .get_coalesce           = igbvf_get_coalesce,
 540         .set_coalesce           = igbvf_set_coalesce,
 541 };
 542
 543 void igbvf_set_ethtool_ops(struct net_device *netdev)
 544 {
 545         /* have to "undeclare" const on this struct to remove warnings */
 546         SET_ETHTOOL_OPS(netdev, (struct ethtool_ops *)&igbvf_ethtool_ops);
 547 }