drivers/net/ethernet/intel/igbvf/ethtool.c

   1 /*******************************************************************************
   2
   3   Intel(R) 82576 Virtual Function Linux driver
   4   Copyright(c) 2009 - 2012 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_msglevel(struct net_device *netdev)
 132 {
 133         struct igbvf_adapter *adapter = netdev_priv(netdev);
 134         return adapter->msg_enable;
 135 }
 136
 137 static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
 138 {
 139         struct igbvf_adapter *adapter = netdev_priv(netdev);
 140         adapter->msg_enable = data;
 141 }
 142
 143 static int igbvf_get_regs_len(struct net_device *netdev)
 144 {
 145 #define IGBVF_REGS_LEN 8
 146         return IGBVF_REGS_LEN * sizeof(u32);
 147 }
 148
 149 static void igbvf_get_regs(struct net_device *netdev,
 150                            struct ethtool_regs *regs, void *p)
 151 {
 152         struct igbvf_adapter *adapter = netdev_priv(netdev);
 153         struct e1000_hw *hw = &adapter->hw;
 154         u32 *regs_buff = p;
 155
 156         memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
 157
 158         regs->version = (1 << 24) | (adapter->pdev->revision << 16) |
 159                         adapter->pdev->device;
 160
 161         regs_buff[0] = er32(CTRL);
 162         regs_buff[1] = er32(STATUS);
 163
 164         regs_buff[2] = er32(RDLEN(0));
 165         regs_buff[3] = er32(RDH(0));
 166         regs_buff[4] = er32(RDT(0));
 167
 168         regs_buff[5] = er32(TDLEN(0));
 169         regs_buff[6] = er32(TDH(0));
 170         regs_buff[7] = er32(TDT(0));
 171 }
 172
 173 static int igbvf_get_eeprom_len(struct net_device *netdev)
 174 {
 175         return 0;
 176 }
 177
 178 static int igbvf_get_eeprom(struct net_device *netdev,
 179                             struct ethtool_eeprom *eeprom, u8 *bytes)
 180 {
 181         return -EOPNOTSUPP;
 182 }
 183
 184 static int igbvf_set_eeprom(struct net_device *netdev,
 185                             struct ethtool_eeprom *eeprom, u8 *bytes)
 186 {
 187         return -EOPNOTSUPP;
 188 }
 189
 190 static void igbvf_get_drvinfo(struct net_device *netdev,
 191                               struct ethtool_drvinfo *drvinfo)
 192 {
 193         struct igbvf_adapter *adapter = netdev_priv(netdev);
 194
 195         strlcpy(drvinfo->driver,  igbvf_driver_name, sizeof(drvinfo->driver));
 196         strlcpy(drvinfo->version, igbvf_driver_version,
 197                 sizeof(drvinfo->version));
 198         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
 199                 sizeof(drvinfo->bus_info));
 200         drvinfo->regdump_len = igbvf_get_regs_len(netdev);
 201         drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
 202 }
 203
 204 static void igbvf_get_ringparam(struct net_device *netdev,
 205                                 struct ethtool_ringparam *ring)
 206 {
 207         struct igbvf_adapter *adapter = netdev_priv(netdev);
 208         struct igbvf_ring *tx_ring = adapter->tx_ring;
 209         struct igbvf_ring *rx_ring = adapter->rx_ring;
 210
 211         ring->rx_max_pending = IGBVF_MAX_RXD;
 212         ring->tx_max_pending = IGBVF_MAX_TXD;
 213         ring->rx_pending = rx_ring->count;
 214         ring->tx_pending = tx_ring->count;
 215 }
 216
 217 static int igbvf_set_ringparam(struct net_device *netdev,
 218                                struct ethtool_ringparam *ring)
 219 {
 220         struct igbvf_adapter *adapter = netdev_priv(netdev);
 221         struct igbvf_ring *temp_ring;
 222         int err = 0;
 223         u32 new_rx_count, new_tx_count;
 224
 225         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 226                 return -EINVAL;
 227
 228         new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD);
 229         new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD);
 230         new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
 231
 232         new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD);
 233         new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD);
 234         new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
 235
 236         if ((new_tx_count == adapter->tx_ring->count) &&
 237             (new_rx_count == adapter->rx_ring->count)) {
 238                 /* nothing to do */
 239                 return 0;
 240         }
 241
 242         while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
 243                 msleep(1);
 244
 245         if (!netif_running(adapter->netdev)) {
 246                 adapter->tx_ring->count = new_tx_count;
 247                 adapter->rx_ring->count = new_rx_count;
 248                 goto clear_reset;
 249         }
 250
 251         temp_ring = vmalloc(sizeof(struct igbvf_ring));
 252         if (!temp_ring) {
 253                 err = -ENOMEM;
 254                 goto clear_reset;
 255         }
 256
 257         igbvf_down(adapter);
 258
 259         /*
 260          * We can't just free everything and then setup again,
 261          * because the ISRs in MSI-X mode get passed pointers
 262          * to the tx and rx ring structs.
 263          */
 264         if (new_tx_count != adapter->tx_ring->count) {
 265                 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
 266
 267                 temp_ring->count = new_tx_count;
 268                 err = igbvf_setup_tx_resources(adapter, temp_ring);
 269                 if (err)
 270                         goto err_setup;
 271
 272                 igbvf_free_tx_resources(adapter->tx_ring);
 273
 274                 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
 275         }
 276
 277         if (new_rx_count != adapter->rx_ring->count) {
 278                 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
 279
 280                 temp_ring->count = new_rx_count;
 281                 err = igbvf_setup_rx_resources(adapter, temp_ring);
 282                 if (err)
 283                         goto err_setup;
 284
 285                 igbvf_free_rx_resources(adapter->rx_ring);
 286
 287                 memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring));
 288         }
 289 err_setup:
 290         igbvf_up(adapter);
 291         vfree(temp_ring);
 292 clear_reset:
 293         clear_bit(__IGBVF_RESETTING, &adapter->state);
 294         return err;
 295 }
 296
 297 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
 298 {
 299         struct e1000_hw *hw = &adapter->hw;
 300         *data = 0;
 301
 302         hw->mac.ops.check_for_link(hw);
 303
 304         if (!(er32(STATUS) & E1000_STATUS_LU))
 305                 *data = 1;
 306
 307         return *data;
 308 }
 309
 310 static void igbvf_diag_test(struct net_device *netdev,
 311                             struct ethtool_test *eth_test, u64 *data)
 312 {
 313         struct igbvf_adapter *adapter = netdev_priv(netdev);
 314
 315         set_bit(__IGBVF_TESTING, &adapter->state);
 316
 317         /*
 318          * Link test performed before hardware reset so autoneg doesn't
 319          * interfere with test result
 320          */
 321         if (igbvf_link_test(adapter, &data[0]))
 322                 eth_test->flags |= ETH_TEST_FL_FAILED;
 323
 324         clear_bit(__IGBVF_TESTING, &adapter->state);
 325         msleep_interruptible(4 * 1000);
 326 }
 327
 328 static void igbvf_get_wol(struct net_device *netdev,
 329                           struct ethtool_wolinfo *wol)
 330 {
 331         wol->supported = 0;
 332         wol->wolopts = 0;
 333 }
 334
 335 static int igbvf_set_wol(struct net_device *netdev,
 336                          struct ethtool_wolinfo *wol)
 337 {
 338         return -EOPNOTSUPP;
 339 }
 340
 341 static int igbvf_get_coalesce(struct net_device *netdev,
 342                               struct ethtool_coalesce *ec)
 343 {
 344         struct igbvf_adapter *adapter = netdev_priv(netdev);
 345
 346         if (adapter->requested_itr <= 3)
 347                 ec->rx_coalesce_usecs = adapter->requested_itr;
 348         else
 349                 ec->rx_coalesce_usecs = adapter->current_itr >> 2;
 350
 351         return 0;
 352 }
 353
 354 static int igbvf_set_coalesce(struct net_device *netdev,
 355                               struct ethtool_coalesce *ec)
 356 {
 357         struct igbvf_adapter *adapter = netdev_priv(netdev);
 358         struct e1000_hw *hw = &adapter->hw;
 359
 360         if ((ec->rx_coalesce_usecs > IGBVF_MAX_ITR_USECS) ||
 361             ((ec->rx_coalesce_usecs > 3) &&
 362              (ec->rx_coalesce_usecs < IGBVF_MIN_ITR_USECS)) ||
 363             (ec->rx_coalesce_usecs == 2))
 364                 return -EINVAL;
 365
 366         /* convert to rate of irq's per second */
 367         if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) {
 368                 adapter->current_itr = IGBVF_START_ITR;
 369                 adapter->requested_itr = ec->rx_coalesce_usecs;
 370         } else {
 371                 adapter->current_itr = ec->rx_coalesce_usecs << 2;
 372                 adapter->requested_itr = 1000000000 /
 373                                         (adapter->current_itr * 256);
 374         }
 375
 376         writel(adapter->current_itr,
 377                hw->hw_addr + adapter->rx_ring->itr_register);
 378
 379         return 0;
 380 }
 381
 382 static int igbvf_nway_reset(struct net_device *netdev)
 383 {
 384         struct igbvf_adapter *adapter = netdev_priv(netdev);
 385         if (netif_running(netdev))
 386                 igbvf_reinit_locked(adapter);
 387         return 0;
 388 }
 389
 390
 391 static void igbvf_get_ethtool_stats(struct net_device *netdev,
 392                                     struct ethtool_stats *stats,
 393                                     u64 *data)
 394 {
 395         struct igbvf_adapter *adapter = netdev_priv(netdev);
 396         int i;
 397
 398         igbvf_update_stats(adapter);
 399         for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
 400                 char *p = (char *)adapter +
 401                           igbvf_gstrings_stats[i].stat_offset;
 402                 char *b = (char *)adapter +
 403                           igbvf_gstrings_stats[i].base_stat_offset;
 404                 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
 405                             sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
 406                             (*(u32 *)p - *(u32 *)b));
 407         }
 408
 409 }
 410
 411 static int igbvf_get_sset_count(struct net_device *dev, int stringset)
 412 {
 413         switch(stringset) {
 414         case ETH_SS_TEST:
 415                 return IGBVF_TEST_LEN;
 416         case ETH_SS_STATS:
 417                 return IGBVF_GLOBAL_STATS_LEN;
 418         default:
 419                 return -EINVAL;
 420         }
 421 }
 422
 423 static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
 424                               u8 *data)
 425 {
 426         u8 *p = data;
 427         int i;
 428
 429         switch (stringset) {
 430         case ETH_SS_TEST:
 431                 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
 432                 break;
 433         case ETH_SS_STATS:
 434                 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
 435                         memcpy(p, igbvf_gstrings_stats[i].stat_string,
 436                                ETH_GSTRING_LEN);
 437                         p += ETH_GSTRING_LEN;
 438                 }
 439                 break;
 440         }
 441 }
 442
 443 static const struct ethtool_ops igbvf_ethtool_ops = {
 444         .get_settings           = igbvf_get_settings,
 445         .set_settings           = igbvf_set_settings,
 446         .get_drvinfo            = igbvf_get_drvinfo,
 447         .get_regs_len           = igbvf_get_regs_len,
 448         .get_regs               = igbvf_get_regs,
 449         .get_wol                = igbvf_get_wol,
 450         .set_wol                = igbvf_set_wol,
 451         .get_msglevel           = igbvf_get_msglevel,
 452         .set_msglevel           = igbvf_set_msglevel,
 453         .nway_reset             = igbvf_nway_reset,
 454         .get_link               = ethtool_op_get_link,
 455         .get_eeprom_len         = igbvf_get_eeprom_len,
 456         .get_eeprom             = igbvf_get_eeprom,
 457         .set_eeprom             = igbvf_set_eeprom,
 458         .get_ringparam          = igbvf_get_ringparam,
 459         .set_ringparam          = igbvf_set_ringparam,
 460         .get_pauseparam         = igbvf_get_pauseparam,
 461         .set_pauseparam         = igbvf_set_pauseparam,
 462         .self_test              = igbvf_diag_test,
 463         .get_sset_count         = igbvf_get_sset_count,
 464         .get_strings            = igbvf_get_strings,
 465         .get_ethtool_stats      = igbvf_get_ethtool_stats,
 466         .get_coalesce           = igbvf_get_coalesce,
 467         .set_coalesce           = igbvf_set_coalesce,
 468 };
 469
 470 void igbvf_set_ethtool_ops(struct net_device *netdev)
 471 {
 472         SET_ETHTOOL_OPS(netdev, &igbvf_ethtool_ops);
 473 }