drivers/net/sfc/ethtool.c

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2008 Solarflare Communications Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation, incorporated herein by reference.
   9  */
  10
  11 #include <linux/netdevice.h>
  12 #include <linux/ethtool.h>
  13 #include <linux/rtnetlink.h>
  14 #include "net_driver.h"
  15 #include "selftest.h"
  16 #include "efx.h"
  17 #include "ethtool.h"
  18 #include "falcon.h"
  19 #include "gmii.h"
  20 #include "mac.h"
  21
  22 const char *efx_loopback_mode_names[] = {
  23         [LOOPBACK_NONE]         = "NONE",
  24         [LOOPBACK_MAC]          = "MAC",
  25         [LOOPBACK_XGMII]        = "XGMII",
  26         [LOOPBACK_XGXS]         = "XGXS",
  27         [LOOPBACK_XAUI]         = "XAUI",
  28         [LOOPBACK_PHY]          = "PHY",
  29         [LOOPBACK_PHYXS]        = "PHY(XS)",
  30         [LOOPBACK_PCS]          = "PHY(PCS)",
  31         [LOOPBACK_PMAPMD]       = "PHY(PMAPMD)",
  32         [LOOPBACK_NETWORK]      = "NETWORK",
  33 };
  34
  35 struct ethtool_string {
  36         char name[ETH_GSTRING_LEN];
  37 };
  38
  39 struct efx_ethtool_stat {
  40         const char *name;
  41         enum {
  42                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  43                 EFX_ETHTOOL_STAT_SOURCE_nic,
  44                 EFX_ETHTOOL_STAT_SOURCE_channel
  45         } source;
  46         unsigned offset;
  47         u64(*get_stat) (void *field); /* Reader function */
  48 };
  49
  50 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  51 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  52                                 get_stat_function) {                    \
  53         .name = #stat_name,                                             \
  54         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  55         .offset = ((((field_type *) 0) ==                               \
  56                       &((struct efx_##source_name *)0)->field) ?        \
  57                     offsetof(struct efx_##source_name, field) :         \
  58                     offsetof(struct efx_##source_name, field)),         \
  59         .get_stat = get_stat_function,                                  \
  60 }
  61
  62 static u64 efx_get_uint_stat(void *field)
  63 {
  64         return *(unsigned int *)field;
  65 }
  66
  67 static u64 efx_get_ulong_stat(void *field)
  68 {
  69         return *(unsigned long *)field;
  70 }
  71
  72 static u64 efx_get_u64_stat(void *field)
  73 {
  74         return *(u64 *) field;
  75 }
  76
  77 static u64 efx_get_atomic_stat(void *field)
  78 {
  79         return atomic_read((atomic_t *) field);
  80 }
  81
  82 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  83         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  84                           unsigned long, efx_get_ulong_stat)
  85
  86 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  87         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  88                           u64, efx_get_u64_stat)
  89
  90 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  91         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  92                          unsigned int, efx_get_uint_stat)
  93
  94 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  95         EFX_ETHTOOL_STAT(field, nic, field,                     \
  96                          atomic_t, efx_get_atomic_stat)
  97
  98 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
  99         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
 100                          unsigned int, efx_get_uint_stat)
 101
 102 static struct efx_ethtool_stat efx_ethtool_stats[] = {
 103         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
 104         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
 105         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
 106         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
 107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 120         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 121         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 122         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 124         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 125         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 126         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 127         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 128         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 129         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 130         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 131         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 132         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 133         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 134         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 135         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 151         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 152         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 153         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 154         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 155         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 156         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 157         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 158         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 159         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 160         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 161         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 162         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 163         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 164         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 165         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 166         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 167         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 168         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 169 };
 170
 171 /* Number of ethtool statistics */
 172 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 173
 174 /**************************************************************************
 175  *
 176  * Ethtool operations
 177  *
 178  **************************************************************************
 179  */
 180
 181 /* Identify device by flashing LEDs */
 182 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 seconds)
 183 {
 184         struct efx_nic *efx = netdev_priv(net_dev);
 185
 186         efx->board_info.blink(efx, 1);
 187         schedule_timeout_interruptible(seconds * HZ);
 188         efx->board_info.blink(efx, 0);
 189         return 0;
 190 }
 191
 192 /* This must be called with rtnl_lock held. */
 193 int efx_ethtool_get_settings(struct net_device *net_dev,
 194                              struct ethtool_cmd *ecmd)
 195 {
 196         struct efx_nic *efx = netdev_priv(net_dev);
 197         int rc;
 198
 199         mutex_lock(&efx->mac_lock);
 200         rc = falcon_xmac_get_settings(efx, ecmd);
 201         mutex_unlock(&efx->mac_lock);
 202
 203         return rc;
 204 }
 205
 206 /* This must be called with rtnl_lock held. */
 207 int efx_ethtool_set_settings(struct net_device *net_dev,
 208                              struct ethtool_cmd *ecmd)
 209 {
 210         struct efx_nic *efx = netdev_priv(net_dev);
 211         int rc;
 212
 213         mutex_lock(&efx->mac_lock);
 214         rc = falcon_xmac_set_settings(efx, ecmd);
 215         mutex_unlock(&efx->mac_lock);
 216         if (!rc)
 217                 efx_reconfigure_port(efx);
 218
 219         return rc;
 220 }
 221
 222 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 223                                     struct ethtool_drvinfo *info)
 224 {
 225         struct efx_nic *efx = netdev_priv(net_dev);
 226
 227         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
 228         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 229         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 230 }
 231
 232 /**
 233  * efx_fill_test - fill in an individual self-test entry
 234  * @test_index:         Index of the test
 235  * @strings:            Ethtool strings, or %NULL
 236  * @data:               Ethtool test results, or %NULL
 237  * @test:               Pointer to test result (used only if data != %NULL)
 238  * @unit_format:        Unit name format (e.g. "channel\%d")
 239  * @unit_id:            Unit id (e.g. 0 for "channel0")
 240  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 241  * @test_id:            Test id (e.g. "PHY" for "loopback.PHY.tx_sent")
 242  *
 243  * Fill in an individual self-test entry.
 244  */
 245 static void efx_fill_test(unsigned int test_index,
 246                           struct ethtool_string *strings, u64 *data,
 247                           int *test, const char *unit_format, int unit_id,
 248                           const char *test_format, const char *test_id)
 249 {
 250         struct ethtool_string unit_str, test_str;
 251
 252         /* Fill data value, if applicable */
 253         if (data)
 254                 data[test_index] = *test;
 255
 256         /* Fill string, if applicable */
 257         if (strings) {
 258                 snprintf(unit_str.name, sizeof(unit_str.name),
 259                          unit_format, unit_id);
 260                 snprintf(test_str.name, sizeof(test_str.name),
 261                          test_format, test_id);
 262                 snprintf(strings[test_index].name,
 263                          sizeof(strings[test_index].name),
 264                          "%-9s%-17s", unit_str.name, test_str.name);
 265         }
 266 }
 267
 268 #define EFX_PORT_NAME "port%d", 0
 269 #define EFX_CHANNEL_NAME(_channel) "channel%d", _channel->channel
 270 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 271 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 272 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 273         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
 274
 275 /**
 276  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 277  * @efx:                Efx NIC
 278  * @lb_tests:           Efx loopback self-test results structure
 279  * @mode:               Loopback test mode
 280  * @test_index:         Starting index of the test
 281  * @strings:            Ethtool strings, or %NULL
 282  * @data:               Ethtool test results, or %NULL
 283  */
 284 static int efx_fill_loopback_test(struct efx_nic *efx,
 285                                   struct efx_loopback_self_tests *lb_tests,
 286                                   enum efx_loopback_mode mode,
 287                                   unsigned int test_index,
 288                                   struct ethtool_string *strings, u64 *data)
 289 {
 290         struct efx_tx_queue *tx_queue;
 291
 292         efx_for_each_tx_queue(tx_queue, efx) {
 293                 efx_fill_test(test_index++, strings, data,
 294                               &lb_tests->tx_sent[tx_queue->queue],
 295                               EFX_TX_QUEUE_NAME(tx_queue),
 296                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 297                 efx_fill_test(test_index++, strings, data,
 298                               &lb_tests->tx_done[tx_queue->queue],
 299                               EFX_TX_QUEUE_NAME(tx_queue),
 300                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 301         }
 302         efx_fill_test(test_index++, strings, data,
 303                       &lb_tests->rx_good,
 304                       EFX_PORT_NAME,
 305                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 306         efx_fill_test(test_index++, strings, data,
 307                       &lb_tests->rx_bad,
 308                       EFX_PORT_NAME,
 309                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 310
 311         return test_index;
 312 }
 313
 314 /**
 315  * efx_ethtool_fill_self_tests - get self-test details
 316  * @efx:                Efx NIC
 317  * @tests:              Efx self-test results structure, or %NULL
 318  * @strings:            Ethtool strings, or %NULL
 319  * @data:               Ethtool test results, or %NULL
 320  */
 321 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 322                                        struct efx_self_tests *tests,
 323                                        struct ethtool_string *strings,
 324                                        u64 *data)
 325 {
 326         struct efx_channel *channel;
 327         unsigned int n = 0;
 328         enum efx_loopback_mode mode;
 329
 330         /* Interrupt */
 331         efx_fill_test(n++, strings, data, &tests->interrupt,
 332                       "core", 0, "interrupt", NULL);
 333
 334         /* Event queues */
 335         efx_for_each_channel(channel, efx) {
 336                 efx_fill_test(n++, strings, data,
 337                               &tests->eventq_dma[channel->channel],
 338                               EFX_CHANNEL_NAME(channel),
 339                               "eventq.dma", NULL);
 340                 efx_fill_test(n++, strings, data,
 341                               &tests->eventq_int[channel->channel],
 342                               EFX_CHANNEL_NAME(channel),
 343                               "eventq.int", NULL);
 344                 efx_fill_test(n++, strings, data,
 345                               &tests->eventq_poll[channel->channel],
 346                               EFX_CHANNEL_NAME(channel),
 347                               "eventq.poll", NULL);
 348         }
 349
 350         /* PHY presence */
 351         efx_fill_test(n++, strings, data, &tests->phy_ok,
 352                       EFX_PORT_NAME, "phy_ok", NULL);
 353
 354         /* Loopback tests */
 355         efx_fill_test(n++, strings, data, &tests->loopback_speed,
 356                       EFX_PORT_NAME, "loopback.speed", NULL);
 357         efx_fill_test(n++, strings, data, &tests->loopback_full_duplex,
 358                       EFX_PORT_NAME, "loopback.full_duplex", NULL);
 359         for (mode = LOOPBACK_NONE; mode < LOOPBACK_TEST_MAX; mode++) {
 360                 if (!(efx->loopback_modes & (1 << mode)))
 361                         continue;
 362                 n = efx_fill_loopback_test(efx,
 363                                            &tests->loopback[mode], mode, n,
 364                                            strings, data);
 365         }
 366
 367         return n;
 368 }
 369
 370 static int efx_ethtool_get_stats_count(struct net_device *net_dev)
 371 {
 372         return EFX_ETHTOOL_NUM_STATS;
 373 }
 374
 375 static int efx_ethtool_self_test_count(struct net_device *net_dev)
 376 {
 377         struct efx_nic *efx = netdev_priv(net_dev);
 378
 379         return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
 380 }
 381
 382 static void efx_ethtool_get_strings(struct net_device *net_dev,
 383                                     u32 string_set, u8 *strings)
 384 {
 385         struct efx_nic *efx = netdev_priv(net_dev);
 386         struct ethtool_string *ethtool_strings =
 387                 (struct ethtool_string *)strings;
 388         int i;
 389
 390         switch (string_set) {
 391         case ETH_SS_STATS:
 392                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 393                         strncpy(ethtool_strings[i].name,
 394                                 efx_ethtool_stats[i].name,
 395                                 sizeof(ethtool_strings[i].name));
 396                 break;
 397         case ETH_SS_TEST:
 398                 efx_ethtool_fill_self_tests(efx, NULL,
 399                                             ethtool_strings, NULL);
 400                 break;
 401         default:
 402                 /* No other string sets */
 403                 break;
 404         }
 405 }
 406
 407 static void efx_ethtool_get_stats(struct net_device *net_dev,
 408                                   struct ethtool_stats *stats,
 409                                   u64 *data)
 410 {
 411         struct efx_nic *efx = netdev_priv(net_dev);
 412         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 413         struct efx_ethtool_stat *stat;
 414         struct efx_channel *channel;
 415         int i;
 416
 417         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 418
 419         /* Update MAC and NIC statistics */
 420         net_dev->get_stats(net_dev);
 421
 422         /* Fill detailed statistics buffer */
 423         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 424                 stat = &efx_ethtool_stats[i];
 425                 switch (stat->source) {
 426                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 427                         data[i] = stat->get_stat((void *)mac_stats +
 428                                                  stat->offset);
 429                         break;
 430                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 431                         data[i] = stat->get_stat((void *)efx + stat->offset);
 432                         break;
 433                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 434                         data[i] = 0;
 435                         efx_for_each_channel(channel, efx)
 436                                 data[i] += stat->get_stat((void *)channel +
 437                                                           stat->offset);
 438                         break;
 439                 }
 440         }
 441 }
 442
 443 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 444 {
 445         struct efx_nic *efx = netdev_priv(net_dev);
 446
 447         /* No way to stop the hardware doing the checks; we just
 448          * ignore the result.
 449          */
 450         efx->rx_checksum_enabled = (enable ? 1 : 0);
 451
 452         return 0;
 453 }
 454
 455 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 456 {
 457         struct efx_nic *efx = netdev_priv(net_dev);
 458
 459         return efx->rx_checksum_enabled;
 460 }
 461
 462 static void efx_ethtool_self_test(struct net_device *net_dev,
 463                                   struct ethtool_test *test, u64 *data)
 464 {
 465         struct efx_nic *efx = netdev_priv(net_dev);
 466         struct efx_self_tests efx_tests;
 467         int offline, already_up;
 468         int rc;
 469
 470         ASSERT_RTNL();
 471         if (efx->state != STATE_RUNNING) {
 472                 rc = -EIO;
 473                 goto fail1;
 474         }
 475
 476         /* We need rx buffers and interrupts. */
 477         already_up = (efx->net_dev->flags & IFF_UP);
 478         if (!already_up) {
 479                 rc = dev_open(efx->net_dev);
 480                 if (rc) {
 481                         EFX_ERR(efx, "failed opening device.\n");
 482                         goto fail2;
 483                 }
 484         }
 485
 486         memset(&efx_tests, 0, sizeof(efx_tests));
 487         offline = (test->flags & ETH_TEST_FL_OFFLINE);
 488
 489         /* Perform online self tests first */
 490         rc = efx_online_test(efx, &efx_tests);
 491         if (rc)
 492                 goto out;
 493
 494         /* Perform offline tests only if online tests passed */
 495         if (offline) {
 496                 /* Stop the kernel from sending packets during the test. */
 497                 efx_stop_queue(efx);
 498                 rc = efx_flush_queues(efx);
 499                 if (!rc)
 500                         rc = efx_offline_test(efx, &efx_tests,
 501                                               efx->loopback_modes);
 502                 efx_wake_queue(efx);
 503         }
 504
 505  out:
 506         if (!already_up)
 507                 dev_close(efx->net_dev);
 508
 509         EFX_LOG(efx, "%s all %sline self-tests\n",
 510                 rc == 0 ? "passed" : "failed", offline ? "off" : "on");
 511
 512  fail2:
 513  fail1:
 514         /* Fill ethtool results structures */
 515         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 516         if (rc)
 517                 test->flags |= ETH_TEST_FL_FAILED;
 518 }
 519
 520 /* Restart autonegotiation */
 521 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 522 {
 523         struct efx_nic *efx = netdev_priv(net_dev);
 524
 525         return mii_nway_restart(&efx->mii);
 526 }
 527
 528 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 529 {
 530         struct efx_nic *efx = netdev_priv(net_dev);
 531
 532         return efx->link_up;
 533 }
 534
 535 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 536                                     struct ethtool_coalesce *coalesce)
 537 {
 538         struct efx_nic *efx = netdev_priv(net_dev);
 539         struct efx_tx_queue *tx_queue;
 540         struct efx_rx_queue *rx_queue;
 541         struct efx_channel *channel;
 542
 543         memset(coalesce, 0, sizeof(*coalesce));
 544
 545         /* Find lowest IRQ moderation across all used TX queues */
 546         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 547         efx_for_each_tx_queue(tx_queue, efx) {
 548                 channel = tx_queue->channel;
 549                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 550                         if (channel->used_flags != EFX_USED_BY_RX_TX)
 551                                 coalesce->tx_coalesce_usecs_irq =
 552                                         channel->irq_moderation;
 553                         else
 554                                 coalesce->tx_coalesce_usecs_irq = 0;
 555                 }
 556         }
 557
 558         /* Find lowest IRQ moderation across all used RX queues */
 559         coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
 560         efx_for_each_rx_queue(rx_queue, efx) {
 561                 channel = rx_queue->channel;
 562                 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
 563                         coalesce->rx_coalesce_usecs_irq =
 564                                 channel->irq_moderation;
 565         }
 566
 567         return 0;
 568 }
 569
 570 /* Set coalescing parameters
 571  * The difficulties occur for shared channels
 572  */
 573 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 574                                     struct ethtool_coalesce *coalesce)
 575 {
 576         struct efx_nic *efx = netdev_priv(net_dev);
 577         struct efx_channel *channel;
 578         struct efx_tx_queue *tx_queue;
 579         unsigned tx_usecs, rx_usecs;
 580
 581         if (coalesce->use_adaptive_rx_coalesce ||
 582             coalesce->use_adaptive_tx_coalesce)
 583                 return -EOPNOTSUPP;
 584
 585         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 586                 EFX_ERR(efx, "invalid coalescing setting. "
 587                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 588                 return -EOPNOTSUPP;
 589         }
 590
 591         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 592         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 593
 594         /* If the channel is shared only allow RX parameters to be set */
 595         efx_for_each_tx_queue(tx_queue, efx) {
 596                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 597                     tx_usecs) {
 598                         EFX_ERR(efx, "Channel is shared. "
 599                                 "Only RX coalescing may be set\n");
 600                         return -EOPNOTSUPP;
 601                 }
 602         }
 603
 604         efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
 605
 606         /* Reset channel to pick up new moderation value.  Note that
 607          * this may change the value of the irq_moderation field
 608          * (e.g. to allow for hardware timer granularity).
 609          */
 610         efx_for_each_channel(channel, efx)
 611                 falcon_set_int_moderation(channel);
 612
 613         return 0;
 614 }
 615
 616 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 617                                       struct ethtool_pauseparam *pause)
 618 {
 619         struct efx_nic *efx = netdev_priv(net_dev);
 620         enum efx_fc_type flow_control = efx->flow_control;
 621         int rc;
 622
 623         flow_control &= ~(EFX_FC_RX | EFX_FC_TX | EFX_FC_AUTO);
 624         flow_control |= pause->rx_pause ? EFX_FC_RX : 0;
 625         flow_control |= pause->tx_pause ? EFX_FC_TX : 0;
 626         flow_control |= pause->autoneg ? EFX_FC_AUTO : 0;
 627
 628         /* Try to push the pause parameters */
 629         mutex_lock(&efx->mac_lock);
 630         rc = falcon_xmac_set_pause(efx, flow_control);
 631         mutex_unlock(&efx->mac_lock);
 632
 633         if (!rc)
 634                 efx_reconfigure_port(efx);
 635
 636         return rc;
 637 }
 638
 639 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 640                                        struct ethtool_pauseparam *pause)
 641 {
 642         struct efx_nic *efx = netdev_priv(net_dev);
 643
 644         pause->rx_pause = (efx->flow_control & EFX_FC_RX) ? 1 : 0;
 645         pause->tx_pause = (efx->flow_control & EFX_FC_TX) ? 1 : 0;
 646         pause->autoneg = (efx->flow_control & EFX_FC_AUTO) ? 1 : 0;
 647 }
 648
 649
 650 struct ethtool_ops efx_ethtool_ops = {
 651         .get_settings           = efx_ethtool_get_settings,
 652         .set_settings           = efx_ethtool_set_settings,
 653         .get_drvinfo            = efx_ethtool_get_drvinfo,
 654         .nway_reset             = efx_ethtool_nway_reset,
 655         .get_link               = efx_ethtool_get_link,
 656         .get_coalesce           = efx_ethtool_get_coalesce,
 657         .set_coalesce           = efx_ethtool_set_coalesce,
 658         .get_pauseparam         = efx_ethtool_get_pauseparam,
 659         .set_pauseparam         = efx_ethtool_set_pauseparam,
 660         .get_rx_csum            = efx_ethtool_get_rx_csum,
 661         .set_rx_csum            = efx_ethtool_set_rx_csum,
 662         .get_tx_csum            = ethtool_op_get_tx_csum,
 663         .set_tx_csum            = ethtool_op_set_tx_csum,
 664         .get_sg                 = ethtool_op_get_sg,
 665         .set_sg                 = ethtool_op_set_sg,
 666         .get_tso                = ethtool_op_get_tso,
 667         .set_tso                = ethtool_op_set_tso,
 668         .get_flags              = ethtool_op_get_flags,
 669         .set_flags              = ethtool_op_set_flags,
 670         .self_test_count        = efx_ethtool_self_test_count,
 671         .self_test              = efx_ethtool_self_test,
 672         .get_strings            = efx_ethtool_get_strings,
 673         .phys_id                = efx_ethtool_phys_id,
 674         .get_stats_count        = efx_ethtool_get_stats_count,
 675         .get_ethtool_stats      = efx_ethtool_get_stats,
 676 };