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 "spi.h"
  21 #include "mac.h"
  22
  23 const char *efx_loopback_mode_names[] = {
  24         [LOOPBACK_NONE]         = "NONE",
  25         [LOOPBACK_MAC]          = "MAC",
  26         [LOOPBACK_XGMII]        = "XGMII",
  27         [LOOPBACK_XGXS]         = "XGXS",
  28         [LOOPBACK_XAUI]         = "XAUI",
  29         [LOOPBACK_PHY]          = "PHY",
  30         [LOOPBACK_PHYXS]        = "PHY(XS)",
  31         [LOOPBACK_PCS]          = "PHY(PCS)",
  32         [LOOPBACK_PMAPMD]       = "PHY(PMAPMD)",
  33         [LOOPBACK_NETWORK]      = "NETWORK",
  34 };
  35
  36 struct ethtool_string {
  37         char name[ETH_GSTRING_LEN];
  38 };
  39
  40 struct efx_ethtool_stat {
  41         const char *name;
  42         enum {
  43                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  44                 EFX_ETHTOOL_STAT_SOURCE_nic,
  45                 EFX_ETHTOOL_STAT_SOURCE_channel
  46         } source;
  47         unsigned offset;
  48         u64(*get_stat) (void *field); /* Reader function */
  49 };
  50
  51 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  52 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  53                                 get_stat_function) {                    \
  54         .name = #stat_name,                                             \
  55         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  56         .offset = ((((field_type *) 0) ==                               \
  57                       &((struct efx_##source_name *)0)->field) ?        \
  58                     offsetof(struct efx_##source_name, field) :         \
  59                     offsetof(struct efx_##source_name, field)),         \
  60         .get_stat = get_stat_function,                                  \
  61 }
  62
  63 static u64 efx_get_uint_stat(void *field)
  64 {
  65         return *(unsigned int *)field;
  66 }
  67
  68 static u64 efx_get_ulong_stat(void *field)
  69 {
  70         return *(unsigned long *)field;
  71 }
  72
  73 static u64 efx_get_u64_stat(void *field)
  74 {
  75         return *(u64 *) field;
  76 }
  77
  78 static u64 efx_get_atomic_stat(void *field)
  79 {
  80         return atomic_read((atomic_t *) field);
  81 }
  82
  83 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  84         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  85                           unsigned long, efx_get_ulong_stat)
  86
  87 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  88         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  89                           u64, efx_get_u64_stat)
  90
  91 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  92         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  93                          unsigned int, efx_get_uint_stat)
  94
  95 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  96         EFX_ETHTOOL_STAT(field, nic, field,                     \
  97                          atomic_t, efx_get_atomic_stat)
  98
  99 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
 100         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
 101                          unsigned int, efx_get_uint_stat)
 102
 103 static struct efx_ethtool_stat efx_ethtool_stats[] = {
 104         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
 105         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
 106         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
 107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 120         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 121         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 122         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 124         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 125         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 126         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 127         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 128         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 129         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 130         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 131         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 132         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 133         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 134         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 135         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 151         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 152         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 153         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 154         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 155         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 156         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 157         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 158         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 159         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 160         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 161         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 162         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 163         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 164         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 165         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 166         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 167         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 168         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 169         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 170 };
 171
 172 /* Number of ethtool statistics */
 173 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 174
 175 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
 176
 177 /**************************************************************************
 178  *
 179  * Ethtool operations
 180  *
 181  **************************************************************************
 182  */
 183
 184 /* Identify device by flashing LEDs */
 185 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 seconds)
 186 {
 187         struct efx_nic *efx = netdev_priv(net_dev);
 188
 189         efx->board_info.blink(efx, 1);
 190         schedule_timeout_interruptible(seconds * HZ);
 191         efx->board_info.blink(efx, 0);
 192         return 0;
 193 }
 194
 195 /* This must be called with rtnl_lock held. */
 196 int efx_ethtool_get_settings(struct net_device *net_dev,
 197                              struct ethtool_cmd *ecmd)
 198 {
 199         struct efx_nic *efx = netdev_priv(net_dev);
 200         int rc;
 201
 202         mutex_lock(&efx->mac_lock);
 203         rc = falcon_xmac_get_settings(efx, ecmd);
 204         mutex_unlock(&efx->mac_lock);
 205
 206         return rc;
 207 }
 208
 209 /* This must be called with rtnl_lock held. */
 210 int efx_ethtool_set_settings(struct net_device *net_dev,
 211                              struct ethtool_cmd *ecmd)
 212 {
 213         struct efx_nic *efx = netdev_priv(net_dev);
 214         int rc;
 215
 216         mutex_lock(&efx->mac_lock);
 217         rc = falcon_xmac_set_settings(efx, ecmd);
 218         mutex_unlock(&efx->mac_lock);
 219         if (!rc)
 220                 efx_reconfigure_port(efx);
 221
 222         return rc;
 223 }
 224
 225 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 226                                     struct ethtool_drvinfo *info)
 227 {
 228         struct efx_nic *efx = netdev_priv(net_dev);
 229
 230         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
 231         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 232         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 233 }
 234
 235 /**
 236  * efx_fill_test - fill in an individual self-test entry
 237  * @test_index:         Index of the test
 238  * @strings:            Ethtool strings, or %NULL
 239  * @data:               Ethtool test results, or %NULL
 240  * @test:               Pointer to test result (used only if data != %NULL)
 241  * @unit_format:        Unit name format (e.g. "channel\%d")
 242  * @unit_id:            Unit id (e.g. 0 for "channel0")
 243  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 244  * @test_id:            Test id (e.g. "PHY" for "loopback.PHY.tx_sent")
 245  *
 246  * Fill in an individual self-test entry.
 247  */
 248 static void efx_fill_test(unsigned int test_index,
 249                           struct ethtool_string *strings, u64 *data,
 250                           int *test, const char *unit_format, int unit_id,
 251                           const char *test_format, const char *test_id)
 252 {
 253         struct ethtool_string unit_str, test_str;
 254
 255         /* Fill data value, if applicable */
 256         if (data)
 257                 data[test_index] = *test;
 258
 259         /* Fill string, if applicable */
 260         if (strings) {
 261                 snprintf(unit_str.name, sizeof(unit_str.name),
 262                          unit_format, unit_id);
 263                 snprintf(test_str.name, sizeof(test_str.name),
 264                          test_format, test_id);
 265                 snprintf(strings[test_index].name,
 266                          sizeof(strings[test_index].name),
 267                          "%-9s%-17s", unit_str.name, test_str.name);
 268         }
 269 }
 270
 271 #define EFX_PORT_NAME "port%d", 0
 272 #define EFX_CHANNEL_NAME(_channel) "channel%d", _channel->channel
 273 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 274 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 275 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 276         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
 277
 278 /**
 279  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 280  * @efx:                Efx NIC
 281  * @lb_tests:           Efx loopback self-test results structure
 282  * @mode:               Loopback test mode
 283  * @test_index:         Starting index of the test
 284  * @strings:            Ethtool strings, or %NULL
 285  * @data:               Ethtool test results, or %NULL
 286  */
 287 static int efx_fill_loopback_test(struct efx_nic *efx,
 288                                   struct efx_loopback_self_tests *lb_tests,
 289                                   enum efx_loopback_mode mode,
 290                                   unsigned int test_index,
 291                                   struct ethtool_string *strings, u64 *data)
 292 {
 293         struct efx_tx_queue *tx_queue;
 294
 295         efx_for_each_tx_queue(tx_queue, efx) {
 296                 efx_fill_test(test_index++, strings, data,
 297                               &lb_tests->tx_sent[tx_queue->queue],
 298                               EFX_TX_QUEUE_NAME(tx_queue),
 299                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 300                 efx_fill_test(test_index++, strings, data,
 301                               &lb_tests->tx_done[tx_queue->queue],
 302                               EFX_TX_QUEUE_NAME(tx_queue),
 303                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 304         }
 305         efx_fill_test(test_index++, strings, data,
 306                       &lb_tests->rx_good,
 307                       EFX_PORT_NAME,
 308                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 309         efx_fill_test(test_index++, strings, data,
 310                       &lb_tests->rx_bad,
 311                       EFX_PORT_NAME,
 312                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 313
 314         return test_index;
 315 }
 316
 317 /**
 318  * efx_ethtool_fill_self_tests - get self-test details
 319  * @efx:                Efx NIC
 320  * @tests:              Efx self-test results structure, or %NULL
 321  * @strings:            Ethtool strings, or %NULL
 322  * @data:               Ethtool test results, or %NULL
 323  */
 324 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 325                                        struct efx_self_tests *tests,
 326                                        struct ethtool_string *strings,
 327                                        u64 *data)
 328 {
 329         struct efx_channel *channel;
 330         unsigned int n = 0;
 331         enum efx_loopback_mode mode;
 332
 333         efx_fill_test(n++, strings, data, &tests->mii,
 334                       "core", 0, "mii", NULL);
 335         efx_fill_test(n++, strings, data, &tests->nvram,
 336                       "core", 0, "nvram", NULL);
 337         efx_fill_test(n++, strings, data, &tests->interrupt,
 338                       "core", 0, "interrupt", NULL);
 339
 340         /* Event queues */
 341         efx_for_each_channel(channel, efx) {
 342                 efx_fill_test(n++, strings, data,
 343                               &tests->eventq_dma[channel->channel],
 344                               EFX_CHANNEL_NAME(channel),
 345                               "eventq.dma", NULL);
 346                 efx_fill_test(n++, strings, data,
 347                               &tests->eventq_int[channel->channel],
 348                               EFX_CHANNEL_NAME(channel),
 349                               "eventq.int", NULL);
 350                 efx_fill_test(n++, strings, data,
 351                               &tests->eventq_poll[channel->channel],
 352                               EFX_CHANNEL_NAME(channel),
 353                               "eventq.poll", NULL);
 354         }
 355
 356         efx_fill_test(n++, strings, data, &tests->registers,
 357                       "core", 0, "registers", NULL);
 358         efx_fill_test(n++, strings, data, &tests->phy,
 359                       EFX_PORT_NAME, "phy", NULL);
 360
 361         /* Loopback tests */
 362         efx_fill_test(n++, strings, data, &tests->loopback_speed,
 363                       EFX_PORT_NAME, "loopback.speed", NULL);
 364         efx_fill_test(n++, strings, data, &tests->loopback_full_duplex,
 365                       EFX_PORT_NAME, "loopback.full_duplex", NULL);
 366         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 367                 if (!(efx->loopback_modes & (1 << mode)))
 368                         continue;
 369                 n = efx_fill_loopback_test(efx,
 370                                            &tests->loopback[mode], mode, n,
 371                                            strings, data);
 372         }
 373
 374         return n;
 375 }
 376
 377 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 378                                       int string_set)
 379 {
 380         switch (string_set) {
 381         case ETH_SS_STATS:
 382                 return EFX_ETHTOOL_NUM_STATS;
 383         case ETH_SS_TEST:
 384                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 385                                                    NULL, NULL, NULL);
 386         default:
 387                 return -EINVAL;
 388         }
 389 }
 390
 391 static void efx_ethtool_get_strings(struct net_device *net_dev,
 392                                     u32 string_set, u8 *strings)
 393 {
 394         struct efx_nic *efx = netdev_priv(net_dev);
 395         struct ethtool_string *ethtool_strings =
 396                 (struct ethtool_string *)strings;
 397         int i;
 398
 399         switch (string_set) {
 400         case ETH_SS_STATS:
 401                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 402                         strncpy(ethtool_strings[i].name,
 403                                 efx_ethtool_stats[i].name,
 404                                 sizeof(ethtool_strings[i].name));
 405                 break;
 406         case ETH_SS_TEST:
 407                 efx_ethtool_fill_self_tests(efx, NULL,
 408                                             ethtool_strings, NULL);
 409                 break;
 410         default:
 411                 /* No other string sets */
 412                 break;
 413         }
 414 }
 415
 416 static void efx_ethtool_get_stats(struct net_device *net_dev,
 417                                   struct ethtool_stats *stats,
 418                                   u64 *data)
 419 {
 420         struct efx_nic *efx = netdev_priv(net_dev);
 421         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 422         struct efx_ethtool_stat *stat;
 423         struct efx_channel *channel;
 424         int i;
 425
 426         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 427
 428         /* Update MAC and NIC statistics */
 429         net_dev->get_stats(net_dev);
 430
 431         /* Fill detailed statistics buffer */
 432         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 433                 stat = &efx_ethtool_stats[i];
 434                 switch (stat->source) {
 435                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 436                         data[i] = stat->get_stat((void *)mac_stats +
 437                                                  stat->offset);
 438                         break;
 439                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 440                         data[i] = stat->get_stat((void *)efx + stat->offset);
 441                         break;
 442                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 443                         data[i] = 0;
 444                         efx_for_each_channel(channel, efx)
 445                                 data[i] += stat->get_stat((void *)channel +
 446                                                           stat->offset);
 447                         break;
 448                 }
 449         }
 450 }
 451
 452 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 453 {
 454         struct efx_nic *efx = netdev_priv(net_dev);
 455
 456         /* No way to stop the hardware doing the checks; we just
 457          * ignore the result.
 458          */
 459         efx->rx_checksum_enabled = !!enable;
 460
 461         return 0;
 462 }
 463
 464 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 465 {
 466         struct efx_nic *efx = netdev_priv(net_dev);
 467
 468         return efx->rx_checksum_enabled;
 469 }
 470
 471 static void efx_ethtool_self_test(struct net_device *net_dev,
 472                                   struct ethtool_test *test, u64 *data)
 473 {
 474         struct efx_nic *efx = netdev_priv(net_dev);
 475         struct efx_self_tests efx_tests;
 476         int offline, already_up;
 477         int rc;
 478
 479         ASSERT_RTNL();
 480         if (efx->state != STATE_RUNNING) {
 481                 rc = -EIO;
 482                 goto fail1;
 483         }
 484
 485         /* We need rx buffers and interrupts. */
 486         already_up = (efx->net_dev->flags & IFF_UP);
 487         if (!already_up) {
 488                 rc = dev_open(efx->net_dev);
 489                 if (rc) {
 490                         EFX_ERR(efx, "failed opening device.\n");
 491                         goto fail2;
 492                 }
 493         }
 494
 495         memset(&efx_tests, 0, sizeof(efx_tests));
 496         offline = (test->flags & ETH_TEST_FL_OFFLINE);
 497
 498         /* Perform online self tests first */
 499         rc = efx_online_test(efx, &efx_tests);
 500         if (rc)
 501                 goto out;
 502
 503         /* Perform offline tests only if online tests passed */
 504         if (offline)
 505                 rc = efx_offline_test(efx, &efx_tests,
 506                                       efx->loopback_modes);
 507
 508  out:
 509         if (!already_up)
 510                 dev_close(efx->net_dev);
 511
 512         EFX_LOG(efx, "%s all %sline self-tests\n",
 513                 rc == 0 ? "passed" : "failed", offline ? "off" : "on");
 514
 515  fail2:
 516  fail1:
 517         /* Fill ethtool results structures */
 518         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 519         if (rc)
 520                 test->flags |= ETH_TEST_FL_FAILED;
 521 }
 522
 523 /* Restart autonegotiation */
 524 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 525 {
 526         struct efx_nic *efx = netdev_priv(net_dev);
 527
 528         return mii_nway_restart(&efx->mii);
 529 }
 530
 531 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 532 {
 533         struct efx_nic *efx = netdev_priv(net_dev);
 534
 535         return efx->link_up;
 536 }
 537
 538 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 539 {
 540         struct efx_nic *efx = netdev_priv(net_dev);
 541         struct efx_spi_device *spi = efx->spi_eeprom;
 542
 543         if (!spi)
 544                 return 0;
 545         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 546                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 547 }
 548
 549 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 550                                   struct ethtool_eeprom *eeprom, u8 *buf)
 551 {
 552         struct efx_nic *efx = netdev_priv(net_dev);
 553         struct efx_spi_device *spi = efx->spi_eeprom;
 554         size_t len;
 555         int rc;
 556
 557         rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 558                              eeprom->len, &len, buf);
 559         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 560         eeprom->len = len;
 561         return rc;
 562 }
 563
 564 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 565                                   struct ethtool_eeprom *eeprom, u8 *buf)
 566 {
 567         struct efx_nic *efx = netdev_priv(net_dev);
 568         struct efx_spi_device *spi = efx->spi_eeprom;
 569         size_t len;
 570         int rc;
 571
 572         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 573                 return -EINVAL;
 574
 575         rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 576                               eeprom->len, &len, buf);
 577         eeprom->len = len;
 578         return rc;
 579 }
 580
 581 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 582                                     struct ethtool_coalesce *coalesce)
 583 {
 584         struct efx_nic *efx = netdev_priv(net_dev);
 585         struct efx_tx_queue *tx_queue;
 586         struct efx_rx_queue *rx_queue;
 587         struct efx_channel *channel;
 588
 589         memset(coalesce, 0, sizeof(*coalesce));
 590
 591         /* Find lowest IRQ moderation across all used TX queues */
 592         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 593         efx_for_each_tx_queue(tx_queue, efx) {
 594                 channel = tx_queue->channel;
 595                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 596                         if (channel->used_flags != EFX_USED_BY_RX_TX)
 597                                 coalesce->tx_coalesce_usecs_irq =
 598                                         channel->irq_moderation;
 599                         else
 600                                 coalesce->tx_coalesce_usecs_irq = 0;
 601                 }
 602         }
 603
 604         /* Find lowest IRQ moderation across all used RX queues */
 605         coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
 606         efx_for_each_rx_queue(rx_queue, efx) {
 607                 channel = rx_queue->channel;
 608                 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
 609                         coalesce->rx_coalesce_usecs_irq =
 610                                 channel->irq_moderation;
 611         }
 612
 613         return 0;
 614 }
 615
 616 /* Set coalescing parameters
 617  * The difficulties occur for shared channels
 618  */
 619 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 620                                     struct ethtool_coalesce *coalesce)
 621 {
 622         struct efx_nic *efx = netdev_priv(net_dev);
 623         struct efx_channel *channel;
 624         struct efx_tx_queue *tx_queue;
 625         unsigned tx_usecs, rx_usecs;
 626
 627         if (coalesce->use_adaptive_rx_coalesce ||
 628             coalesce->use_adaptive_tx_coalesce)
 629                 return -EOPNOTSUPP;
 630
 631         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 632                 EFX_ERR(efx, "invalid coalescing setting. "
 633                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 634                 return -EOPNOTSUPP;
 635         }
 636
 637         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 638         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 639
 640         /* If the channel is shared only allow RX parameters to be set */
 641         efx_for_each_tx_queue(tx_queue, efx) {
 642                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 643                     tx_usecs) {
 644                         EFX_ERR(efx, "Channel is shared. "
 645                                 "Only RX coalescing may be set\n");
 646                         return -EOPNOTSUPP;
 647                 }
 648         }
 649
 650         efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
 651
 652         /* Reset channel to pick up new moderation value.  Note that
 653          * this may change the value of the irq_moderation field
 654          * (e.g. to allow for hardware timer granularity).
 655          */
 656         efx_for_each_channel(channel, efx)
 657                 falcon_set_int_moderation(channel);
 658
 659         return 0;
 660 }
 661
 662 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 663                                       struct ethtool_pauseparam *pause)
 664 {
 665         struct efx_nic *efx = netdev_priv(net_dev);
 666         enum efx_fc_type flow_control = efx->flow_control;
 667         int rc;
 668
 669         flow_control &= ~(EFX_FC_RX | EFX_FC_TX | EFX_FC_AUTO);
 670         flow_control |= pause->rx_pause ? EFX_FC_RX : 0;
 671         flow_control |= pause->tx_pause ? EFX_FC_TX : 0;
 672         flow_control |= pause->autoneg ? EFX_FC_AUTO : 0;
 673
 674         /* Try to push the pause parameters */
 675         mutex_lock(&efx->mac_lock);
 676         rc = falcon_xmac_set_pause(efx, flow_control);
 677         mutex_unlock(&efx->mac_lock);
 678
 679         if (!rc)
 680                 efx_reconfigure_port(efx);
 681
 682         return rc;
 683 }
 684
 685 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 686                                        struct ethtool_pauseparam *pause)
 687 {
 688         struct efx_nic *efx = netdev_priv(net_dev);
 689
 690         pause->rx_pause = !!(efx->flow_control & EFX_FC_RX);
 691         pause->tx_pause = !!(efx->flow_control & EFX_FC_TX);
 692         pause->autoneg = !!(efx->flow_control & EFX_FC_AUTO);
 693 }
 694
 695
 696 struct ethtool_ops efx_ethtool_ops = {
 697         .get_settings           = efx_ethtool_get_settings,
 698         .set_settings           = efx_ethtool_set_settings,
 699         .get_drvinfo            = efx_ethtool_get_drvinfo,
 700         .nway_reset             = efx_ethtool_nway_reset,
 701         .get_link               = efx_ethtool_get_link,
 702         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 703         .get_eeprom             = efx_ethtool_get_eeprom,
 704         .set_eeprom             = efx_ethtool_set_eeprom,
 705         .get_coalesce           = efx_ethtool_get_coalesce,
 706         .set_coalesce           = efx_ethtool_set_coalesce,
 707         .get_pauseparam         = efx_ethtool_get_pauseparam,
 708         .set_pauseparam         = efx_ethtool_set_pauseparam,
 709         .get_rx_csum            = efx_ethtool_get_rx_csum,
 710         .set_rx_csum            = efx_ethtool_set_rx_csum,
 711         .get_tx_csum            = ethtool_op_get_tx_csum,
 712         .set_tx_csum            = ethtool_op_set_tx_csum,
 713         .get_sg                 = ethtool_op_get_sg,
 714         .set_sg                 = ethtool_op_set_sg,
 715         .get_tso                = ethtool_op_get_tso,
 716         .set_tso                = ethtool_op_set_tso,
 717         .get_flags              = ethtool_op_get_flags,
 718         .set_flags              = ethtool_op_set_flags,
 719         .get_sset_count         = efx_ethtool_get_sset_count,
 720         .self_test              = efx_ethtool_self_test,
 721         .get_strings            = efx_ethtool_get_strings,
 722         .phys_id                = efx_ethtool_phys_id,
 723         .get_ethtool_stats      = efx_ethtool_get_stats,
 724 };