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                         ethtool_cmd_speed_set(ecmd, SPEED_1000);
  94                 else if (status & E1000_STATUS_SPEED_100)
  95                         ethtool_cmd_speed_set(ecmd, SPEED_100);
  96                 else
  97                         ethtool_cmd_speed_set(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                 ethtool_cmd_speed_set(ecmd, -1);
 105                 ecmd->duplex = -1;
 106         }
 107
 108         ecmd->autoneg = AUTONEG_DISABLE;
 109
 110         return 0;
 111 }
 112
 113 static int igbvf_set_settings(struct net_device *netdev,
 114                               struct ethtool_cmd *ecmd)
 115 {
 116         return -EOPNOTSUPP;
 117 }
 118
 119 static void igbvf_get_pauseparam(struct net_device *netdev,
 120                                  struct ethtool_pauseparam *pause)
 121 {
 122         return;
 123 }
 124
 125 static int igbvf_set_pauseparam(struct net_device *netdev,
 126                                 struct ethtool_pauseparam *pause)
 127 {
 128         return -EOPNOTSUPP;
 129 }
 130
 131 static u32 igbvf_get_rx_csum(struct net_device *netdev)
 132 {
 133         struct igbvf_adapter *adapter = netdev_priv(netdev);
 134         return !(adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED);
 135 }
 136
 137 static int igbvf_set_rx_csum(struct net_device *netdev, u32 data)
 138 {
 139         struct igbvf_adapter *adapter = netdev_priv(netdev);
 140
 141         if (data)
 142                 adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED;
 143         else
 144                 adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED;
 145
 146         return 0;
 147 }
 148
 149 static u32 igbvf_get_tx_csum(struct net_device *netdev)
 150 {
 151         return (netdev->features & NETIF_F_IP_CSUM) != 0;
 152 }
 153
 154 static int igbvf_set_tx_csum(struct net_device *netdev, u32 data)
 155 {
 156         if (data)
 157                 netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
 158         else
 159                 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
 160         return 0;
 161 }
 162
 163 static int igbvf_set_tso(struct net_device *netdev, u32 data)
 164 {
 165         struct igbvf_adapter *adapter = netdev_priv(netdev);
 166
 167         if (data) {
 168                 netdev->features |= NETIF_F_TSO;
 169                 netdev->features |= NETIF_F_TSO6;
 170         } else {
 171                 netdev->features &= ~NETIF_F_TSO;
 172                 netdev->features &= ~NETIF_F_TSO6;
 173         }
 174
 175         dev_info(&adapter->pdev->dev, "TSO is %s\n",
 176                  data ? "Enabled" : "Disabled");
 177         return 0;
 178 }
 179
 180 static u32 igbvf_get_msglevel(struct net_device *netdev)
 181 {
 182         struct igbvf_adapter *adapter = netdev_priv(netdev);
 183         return adapter->msg_enable;
 184 }
 185
 186 static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
 187 {
 188         struct igbvf_adapter *adapter = netdev_priv(netdev);
 189         adapter->msg_enable = data;
 190 }
 191
 192 static int igbvf_get_regs_len(struct net_device *netdev)
 193 {
 194 #define IGBVF_REGS_LEN 8
 195         return IGBVF_REGS_LEN * sizeof(u32);
 196 }
 197
 198 static void igbvf_get_regs(struct net_device *netdev,
 199                            struct ethtool_regs *regs, void *p)
 200 {
 201         struct igbvf_adapter *adapter = netdev_priv(netdev);
 202         struct e1000_hw *hw = &adapter->hw;
 203         u32 *regs_buff = p;
 204
 205         memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
 206
 207         regs->version = (1 << 24) | (adapter->pdev->revision << 16) |
 208                         adapter->pdev->device;
 209
 210         regs_buff[0] = er32(CTRL);
 211         regs_buff[1] = er32(STATUS);
 212
 213         regs_buff[2] = er32(RDLEN(0));
 214         regs_buff[3] = er32(RDH(0));
 215         regs_buff[4] = er32(RDT(0));
 216
 217         regs_buff[5] = er32(TDLEN(0));
 218         regs_buff[6] = er32(TDH(0));
 219         regs_buff[7] = er32(TDT(0));
 220 }
 221
 222 static int igbvf_get_eeprom_len(struct net_device *netdev)
 223 {
 224         return 0;
 225 }
 226
 227 static int igbvf_get_eeprom(struct net_device *netdev,
 228                             struct ethtool_eeprom *eeprom, u8 *bytes)
 229 {
 230         return -EOPNOTSUPP;
 231 }
 232
 233 static int igbvf_set_eeprom(struct net_device *netdev,
 234                             struct ethtool_eeprom *eeprom, u8 *bytes)
 235 {
 236         return -EOPNOTSUPP;
 237 }
 238
 239 static void igbvf_get_drvinfo(struct net_device *netdev,
 240                               struct ethtool_drvinfo *drvinfo)
 241 {
 242         struct igbvf_adapter *adapter = netdev_priv(netdev);
 243         char firmware_version[32] = "N/A";
 244
 245         strncpy(drvinfo->driver,  igbvf_driver_name, 32);
 246         strncpy(drvinfo->version, igbvf_driver_version, 32);
 247         strncpy(drvinfo->fw_version, firmware_version, 32);
 248         strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
 249         drvinfo->regdump_len = igbvf_get_regs_len(netdev);
 250         drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
 251 }
 252
 253 static void igbvf_get_ringparam(struct net_device *netdev,
 254                                 struct ethtool_ringparam *ring)
 255 {
 256         struct igbvf_adapter *adapter = netdev_priv(netdev);
 257         struct igbvf_ring *tx_ring = adapter->tx_ring;
 258         struct igbvf_ring *rx_ring = adapter->rx_ring;
 259
 260         ring->rx_max_pending = IGBVF_MAX_RXD;
 261         ring->tx_max_pending = IGBVF_MAX_TXD;
 262         ring->rx_mini_max_pending = 0;
 263         ring->rx_jumbo_max_pending = 0;
 264         ring->rx_pending = rx_ring->count;
 265         ring->tx_pending = tx_ring->count;
 266         ring->rx_mini_pending = 0;
 267         ring->rx_jumbo_pending = 0;
 268 }
 269
 270 static int igbvf_set_ringparam(struct net_device *netdev,
 271                                struct ethtool_ringparam *ring)
 272 {
 273         struct igbvf_adapter *adapter = netdev_priv(netdev);
 274         struct igbvf_ring *temp_ring;
 275         int err = 0;
 276         u32 new_rx_count, new_tx_count;
 277
 278         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 279                 return -EINVAL;
 280
 281         new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD);
 282         new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD);
 283         new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
 284
 285         new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD);
 286         new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD);
 287         new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
 288
 289         if ((new_tx_count == adapter->tx_ring->count) &&
 290             (new_rx_count == adapter->rx_ring->count)) {
 291                 /* nothing to do */
 292                 return 0;
 293         }
 294
 295         while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
 296                 msleep(1);
 297
 298         if (!netif_running(adapter->netdev)) {
 299                 adapter->tx_ring->count = new_tx_count;
 300                 adapter->rx_ring->count = new_rx_count;
 301                 goto clear_reset;
 302         }
 303
 304         temp_ring = vmalloc(sizeof(struct igbvf_ring));
 305         if (!temp_ring) {
 306                 err = -ENOMEM;
 307                 goto clear_reset;
 308         }
 309
 310         igbvf_down(adapter);
 311
 312         /*
 313          * We can't just free everything and then setup again,
 314          * because the ISRs in MSI-X mode get passed pointers
 315          * to the tx and rx ring structs.
 316          */
 317         if (new_tx_count != adapter->tx_ring->count) {
 318                 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
 319
 320                 temp_ring->count = new_tx_count;
 321                 err = igbvf_setup_tx_resources(adapter, temp_ring);
 322                 if (err)
 323                         goto err_setup;
 324
 325                 igbvf_free_tx_resources(adapter->tx_ring);
 326
 327                 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
 328         }
 329
 330         if (new_rx_count != adapter->rx_ring->count) {
 331                 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
 332
 333                 temp_ring->count = new_rx_count;
 334                 err = igbvf_setup_rx_resources(adapter, temp_ring);
 335                 if (err)
 336                         goto err_setup;
 337
 338                 igbvf_free_rx_resources(adapter->rx_ring);
 339
 340                 memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring));
 341         }
 342 err_setup:
 343         igbvf_up(adapter);
 344         vfree(temp_ring);
 345 clear_reset:
 346         clear_bit(__IGBVF_RESETTING, &adapter->state);
 347         return err;
 348 }
 349
 350 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
 351 {
 352         struct e1000_hw *hw = &adapter->hw;
 353         *data = 0;
 354
 355         hw->mac.ops.check_for_link(hw);
 356
 357         if (!(er32(STATUS) & E1000_STATUS_LU))
 358                 *data = 1;
 359
 360         return *data;
 361 }
 362
 363 static void igbvf_diag_test(struct net_device *netdev,
 364                             struct ethtool_test *eth_test, u64 *data)
 365 {
 366         struct igbvf_adapter *adapter = netdev_priv(netdev);
 367
 368         set_bit(__IGBVF_TESTING, &adapter->state);
 369
 370         /*
 371          * Link test performed before hardware reset so autoneg doesn't
 372          * interfere with test result
 373          */
 374         if (igbvf_link_test(adapter, &data[0]))
 375                 eth_test->flags |= ETH_TEST_FL_FAILED;
 376
 377         clear_bit(__IGBVF_TESTING, &adapter->state);
 378         msleep_interruptible(4 * 1000);
 379 }
 380
 381 static void igbvf_get_wol(struct net_device *netdev,
 382                           struct ethtool_wolinfo *wol)
 383 {
 384         wol->supported = 0;
 385         wol->wolopts = 0;
 386 }
 387
 388 static int igbvf_set_wol(struct net_device *netdev,
 389                          struct ethtool_wolinfo *wol)
 390 {
 391         return -EOPNOTSUPP;
 392 }
 393
 394 static int igbvf_get_coalesce(struct net_device *netdev,
 395                               struct ethtool_coalesce *ec)
 396 {
 397         struct igbvf_adapter *adapter = netdev_priv(netdev);
 398
 399         if (adapter->itr_setting <= 3)
 400                 ec->rx_coalesce_usecs = adapter->itr_setting;
 401         else
 402                 ec->rx_coalesce_usecs = adapter->itr_setting >> 2;
 403
 404         return 0;
 405 }
 406
 407 static int igbvf_set_coalesce(struct net_device *netdev,
 408                               struct ethtool_coalesce *ec)
 409 {
 410         struct igbvf_adapter *adapter = netdev_priv(netdev);
 411         struct e1000_hw *hw = &adapter->hw;
 412
 413         if ((ec->rx_coalesce_usecs > IGBVF_MAX_ITR_USECS) ||
 414             ((ec->rx_coalesce_usecs > 3) &&
 415              (ec->rx_coalesce_usecs < IGBVF_MIN_ITR_USECS)) ||
 416             (ec->rx_coalesce_usecs == 2))
 417                 return -EINVAL;
 418
 419         /* convert to rate of irq's per second */
 420         if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) {
 421                 adapter->itr = IGBVF_START_ITR;
 422                 adapter->itr_setting = ec->rx_coalesce_usecs;
 423         } else {
 424                 adapter->itr = ec->rx_coalesce_usecs << 2;
 425                 adapter->itr_setting = adapter->itr;
 426         }
 427
 428         writel(adapter->itr,
 429                hw->hw_addr + adapter->rx_ring[0].itr_register);
 430
 431         return 0;
 432 }
 433
 434 static int igbvf_nway_reset(struct net_device *netdev)
 435 {
 436         struct igbvf_adapter *adapter = netdev_priv(netdev);
 437         if (netif_running(netdev))
 438                 igbvf_reinit_locked(adapter);
 439         return 0;
 440 }
 441
 442
 443 static void igbvf_get_ethtool_stats(struct net_device *netdev,
 444                                     struct ethtool_stats *stats,
 445                                     u64 *data)
 446 {
 447         struct igbvf_adapter *adapter = netdev_priv(netdev);
 448         int i;
 449
 450         igbvf_update_stats(adapter);
 451         for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
 452                 char *p = (char *)adapter +
 453                           igbvf_gstrings_stats[i].stat_offset;
 454                 char *b = (char *)adapter +
 455                           igbvf_gstrings_stats[i].base_stat_offset;
 456                 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
 457                             sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
 458                             (*(u32 *)p - *(u32 *)b));
 459         }
 460
 461 }
 462
 463 static int igbvf_get_sset_count(struct net_device *dev, int stringset)
 464 {
 465         switch(stringset) {
 466         case ETH_SS_TEST:
 467                 return IGBVF_TEST_LEN;
 468         case ETH_SS_STATS:
 469                 return IGBVF_GLOBAL_STATS_LEN;
 470         default:
 471                 return -EINVAL;
 472         }
 473 }
 474
 475 static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
 476                               u8 *data)
 477 {
 478         u8 *p = data;
 479         int i;
 480
 481         switch (stringset) {
 482         case ETH_SS_TEST:
 483                 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
 484                 break;
 485         case ETH_SS_STATS:
 486                 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
 487                         memcpy(p, igbvf_gstrings_stats[i].stat_string,
 488                                ETH_GSTRING_LEN);
 489                         p += ETH_GSTRING_LEN;
 490                 }
 491                 break;
 492         }
 493 }
 494
 495 static const struct ethtool_ops igbvf_ethtool_ops = {
 496         .get_settings           = igbvf_get_settings,
 497         .set_settings           = igbvf_set_settings,
 498         .get_drvinfo            = igbvf_get_drvinfo,
 499         .get_regs_len           = igbvf_get_regs_len,
 500         .get_regs               = igbvf_get_regs,
 501         .get_wol                = igbvf_get_wol,
 502         .set_wol                = igbvf_set_wol,
 503         .get_msglevel           = igbvf_get_msglevel,
 504         .set_msglevel           = igbvf_set_msglevel,
 505         .nway_reset             = igbvf_nway_reset,
 506         .get_link               = ethtool_op_get_link,
 507         .get_eeprom_len         = igbvf_get_eeprom_len,
 508         .get_eeprom             = igbvf_get_eeprom,
 509         .set_eeprom             = igbvf_set_eeprom,
 510         .get_ringparam          = igbvf_get_ringparam,
 511         .set_ringparam          = igbvf_set_ringparam,
 512         .get_pauseparam         = igbvf_get_pauseparam,
 513         .set_pauseparam         = igbvf_set_pauseparam,
 514         .get_rx_csum            = igbvf_get_rx_csum,
 515         .set_rx_csum            = igbvf_set_rx_csum,
 516         .get_tx_csum            = igbvf_get_tx_csum,
 517         .set_tx_csum            = igbvf_set_tx_csum,
 518         .get_sg                 = ethtool_op_get_sg,
 519         .set_sg                 = ethtool_op_set_sg,
 520         .get_tso                = ethtool_op_get_tso,
 521         .set_tso                = igbvf_set_tso,
 522         .self_test              = igbvf_diag_test,
 523         .get_sset_count         = igbvf_get_sset_count,
 524         .get_strings            = igbvf_get_strings,
 525         .get_ethtool_stats      = igbvf_get_ethtool_stats,
 526         .get_coalesce           = igbvf_get_coalesce,
 527         .set_coalesce           = igbvf_set_coalesce,
 528 };
 529
 530 void igbvf_set_ethtool_ops(struct net_device *netdev)
 531 {
 532         /* have to "undeclare" const on this struct to remove warnings */
 533         SET_ETHTOOL_OPS(netdev, (struct ethtool_ops *)&igbvf_ethtool_ops);
 534 }