SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 "workarounds.h"
  16 #include "selftest.h"
  17 #include "efx.h"
  18 #include "ethtool.h"
  19 #include "falcon.h"
  20 #include "spi.h"
  21 #include "mdio_10g.h"
  22
  23 const char *efx_loopback_mode_names[] = {
  24         [LOOPBACK_NONE]         = "NONE",
  25         [LOOPBACK_GMAC]         = "GMAC",
  26         [LOOPBACK_XGMII]        = "XGMII",
  27         [LOOPBACK_XGXS]         = "XGXS",
  28         [LOOPBACK_XAUI]         = "XAUI",
  29         [LOOPBACK_GPHY]         = "GPHY",
  30         [LOOPBACK_PHYXS]        = "PHYXS",
  31         [LOOPBACK_PCS]          = "PCS",
  32         [LOOPBACK_PMAPMD]       = "PMA/PMD",
  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 count)
 186 {
 187         struct efx_nic *efx = netdev_priv(net_dev);
 188
 189         efx->board_info.blink(efx, 1);
 190         set_current_state(TASK_INTERRUPTIBLE);
 191         if (count)
 192                 schedule_timeout(count * HZ);
 193         else
 194                 schedule();
 195         efx->board_info.blink(efx, 0);
 196         return 0;
 197 }
 198
 199 /* This must be called with rtnl_lock held. */
 200 int efx_ethtool_get_settings(struct net_device *net_dev,
 201                              struct ethtool_cmd *ecmd)
 202 {
 203         struct efx_nic *efx = netdev_priv(net_dev);
 204
 205         mutex_lock(&efx->mac_lock);
 206         efx->phy_op->get_settings(efx, ecmd);
 207         mutex_unlock(&efx->mac_lock);
 208
 209         /* Falcon GMAC does not support 1000Mbps HD */
 210         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
 211
 212         return 0;
 213 }
 214
 215 /* This must be called with rtnl_lock held. */
 216 int efx_ethtool_set_settings(struct net_device *net_dev,
 217                              struct ethtool_cmd *ecmd)
 218 {
 219         struct efx_nic *efx = netdev_priv(net_dev);
 220         int rc;
 221
 222         /* Falcon GMAC does not support 1000Mbps HD */
 223         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
 224                 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
 225                         " setting\n");
 226                 return -EINVAL;
 227         }
 228
 229         mutex_lock(&efx->mac_lock);
 230         rc = efx->phy_op->set_settings(efx, ecmd);
 231         mutex_unlock(&efx->mac_lock);
 232         if (!rc)
 233                 efx_reconfigure_port(efx);
 234
 235         return rc;
 236 }
 237
 238 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 239                                     struct ethtool_drvinfo *info)
 240 {
 241         struct efx_nic *efx = netdev_priv(net_dev);
 242
 243         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
 244         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 245         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 246 }
 247
 248 /**
 249  * efx_fill_test - fill in an individual self-test entry
 250  * @test_index:         Index of the test
 251  * @strings:            Ethtool strings, or %NULL
 252  * @data:               Ethtool test results, or %NULL
 253  * @test:               Pointer to test result (used only if data != %NULL)
 254  * @unit_format:        Unit name format (e.g. "chan\%d")
 255  * @unit_id:            Unit id (e.g. 0 for "chan0")
 256  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 257  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 258  *
 259  * Fill in an individual self-test entry.
 260  */
 261 static void efx_fill_test(unsigned int test_index,
 262                           struct ethtool_string *strings, u64 *data,
 263                           int *test, const char *unit_format, int unit_id,
 264                           const char *test_format, const char *test_id)
 265 {
 266         struct ethtool_string unit_str, test_str;
 267
 268         /* Fill data value, if applicable */
 269         if (data)
 270                 data[test_index] = *test;
 271
 272         /* Fill string, if applicable */
 273         if (strings) {
 274                 if (strchr(unit_format, '%'))
 275                         snprintf(unit_str.name, sizeof(unit_str.name),
 276                                  unit_format, unit_id);
 277                 else
 278                         strcpy(unit_str.name, unit_format);
 279                 snprintf(test_str.name, sizeof(test_str.name),
 280                          test_format, test_id);
 281                 snprintf(strings[test_index].name,
 282                          sizeof(strings[test_index].name),
 283                          "%-6s %-24s", unit_str.name, test_str.name);
 284         }
 285 }
 286
 287 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 288 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 289 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 290 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 291         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
 292
 293 /**
 294  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 295  * @efx:                Efx NIC
 296  * @lb_tests:           Efx loopback self-test results structure
 297  * @mode:               Loopback test mode
 298  * @test_index:         Starting index of the test
 299  * @strings:            Ethtool strings, or %NULL
 300  * @data:               Ethtool test results, or %NULL
 301  */
 302 static int efx_fill_loopback_test(struct efx_nic *efx,
 303                                   struct efx_loopback_self_tests *lb_tests,
 304                                   enum efx_loopback_mode mode,
 305                                   unsigned int test_index,
 306                                   struct ethtool_string *strings, u64 *data)
 307 {
 308         struct efx_tx_queue *tx_queue;
 309
 310         efx_for_each_tx_queue(tx_queue, efx) {
 311                 efx_fill_test(test_index++, strings, data,
 312                               &lb_tests->tx_sent[tx_queue->queue],
 313                               EFX_TX_QUEUE_NAME(tx_queue),
 314                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 315                 efx_fill_test(test_index++, strings, data,
 316                               &lb_tests->tx_done[tx_queue->queue],
 317                               EFX_TX_QUEUE_NAME(tx_queue),
 318                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 319         }
 320         efx_fill_test(test_index++, strings, data,
 321                       &lb_tests->rx_good,
 322                       "rx", 0,
 323                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 324         efx_fill_test(test_index++, strings, data,
 325                       &lb_tests->rx_bad,
 326                       "rx", 0,
 327                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 328
 329         return test_index;
 330 }
 331
 332 /**
 333  * efx_ethtool_fill_self_tests - get self-test details
 334  * @efx:                Efx NIC
 335  * @tests:              Efx self-test results structure, or %NULL
 336  * @strings:            Ethtool strings, or %NULL
 337  * @data:               Ethtool test results, or %NULL
 338  */
 339 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 340                                        struct efx_self_tests *tests,
 341                                        struct ethtool_string *strings,
 342                                        u64 *data)
 343 {
 344         struct efx_channel *channel;
 345         unsigned int n = 0, i;
 346         enum efx_loopback_mode mode;
 347
 348         efx_fill_test(n++, strings, data, &tests->mii,
 349                       "core", 0, "mii", NULL);
 350         efx_fill_test(n++, strings, data, &tests->nvram,
 351                       "core", 0, "nvram", NULL);
 352         efx_fill_test(n++, strings, data, &tests->interrupt,
 353                       "core", 0, "interrupt", NULL);
 354
 355         /* Event queues */
 356         efx_for_each_channel(channel, efx) {
 357                 efx_fill_test(n++, strings, data,
 358                               &tests->eventq_dma[channel->channel],
 359                               EFX_CHANNEL_NAME(channel),
 360                               "eventq.dma", NULL);
 361                 efx_fill_test(n++, strings, data,
 362                               &tests->eventq_int[channel->channel],
 363                               EFX_CHANNEL_NAME(channel),
 364                               "eventq.int", NULL);
 365                 efx_fill_test(n++, strings, data,
 366                               &tests->eventq_poll[channel->channel],
 367                               EFX_CHANNEL_NAME(channel),
 368                               "eventq.poll", NULL);
 369         }
 370
 371         efx_fill_test(n++, strings, data, &tests->registers,
 372                       "core", 0, "registers", NULL);
 373
 374         for (i = 0; i < efx->phy_op->num_tests; i++)
 375                 efx_fill_test(n++, strings, data, &tests->phy[i],
 376                               "phy", 0, efx->phy_op->test_names[i], NULL);
 377
 378         /* Loopback tests */
 379         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 380                 if (!(efx->loopback_modes & (1 << mode)))
 381                         continue;
 382                 n = efx_fill_loopback_test(efx,
 383                                            &tests->loopback[mode], mode, n,
 384                                            strings, data);
 385         }
 386
 387         return n;
 388 }
 389
 390 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 391                                       int string_set)
 392 {
 393         switch (string_set) {
 394         case ETH_SS_STATS:
 395                 return EFX_ETHTOOL_NUM_STATS;
 396         case ETH_SS_TEST:
 397                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 398                                                    NULL, NULL, NULL);
 399         default:
 400                 return -EINVAL;
 401         }
 402 }
 403
 404 static void efx_ethtool_get_strings(struct net_device *net_dev,
 405                                     u32 string_set, u8 *strings)
 406 {
 407         struct efx_nic *efx = netdev_priv(net_dev);
 408         struct ethtool_string *ethtool_strings =
 409                 (struct ethtool_string *)strings;
 410         int i;
 411
 412         switch (string_set) {
 413         case ETH_SS_STATS:
 414                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 415                         strncpy(ethtool_strings[i].name,
 416                                 efx_ethtool_stats[i].name,
 417                                 sizeof(ethtool_strings[i].name));
 418                 break;
 419         case ETH_SS_TEST:
 420                 efx_ethtool_fill_self_tests(efx, NULL,
 421                                             ethtool_strings, NULL);
 422                 break;
 423         default:
 424                 /* No other string sets */
 425                 break;
 426         }
 427 }
 428
 429 static void efx_ethtool_get_stats(struct net_device *net_dev,
 430                                   struct ethtool_stats *stats,
 431                                   u64 *data)
 432 {
 433         struct efx_nic *efx = netdev_priv(net_dev);
 434         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 435         struct efx_ethtool_stat *stat;
 436         struct efx_channel *channel;
 437         int i;
 438
 439         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 440
 441         /* Update MAC and NIC statistics */
 442         dev_get_stats(net_dev);
 443
 444         /* Fill detailed statistics buffer */
 445         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 446                 stat = &efx_ethtool_stats[i];
 447                 switch (stat->source) {
 448                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 449                         data[i] = stat->get_stat((void *)mac_stats +
 450                                                  stat->offset);
 451                         break;
 452                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 453                         data[i] = stat->get_stat((void *)efx + stat->offset);
 454                         break;
 455                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 456                         data[i] = 0;
 457                         efx_for_each_channel(channel, efx)
 458                                 data[i] += stat->get_stat((void *)channel +
 459                                                           stat->offset);
 460                         break;
 461                 }
 462         }
 463 }
 464
 465 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 466 {
 467         struct efx_nic *efx = netdev_priv(net_dev);
 468
 469         /* No way to stop the hardware doing the checks; we just
 470          * ignore the result.
 471          */
 472         efx->rx_checksum_enabled = !!enable;
 473
 474         return 0;
 475 }
 476
 477 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 478 {
 479         struct efx_nic *efx = netdev_priv(net_dev);
 480
 481         return efx->rx_checksum_enabled;
 482 }
 483
 484 static void efx_ethtool_self_test(struct net_device *net_dev,
 485                                   struct ethtool_test *test, u64 *data)
 486 {
 487         struct efx_nic *efx = netdev_priv(net_dev);
 488         struct efx_self_tests efx_tests;
 489         int already_up;
 490         int rc;
 491
 492         ASSERT_RTNL();
 493         if (efx->state != STATE_RUNNING) {
 494                 rc = -EIO;
 495                 goto fail1;
 496         }
 497
 498         /* We need rx buffers and interrupts. */
 499         already_up = (efx->net_dev->flags & IFF_UP);
 500         if (!already_up) {
 501                 rc = dev_open(efx->net_dev);
 502                 if (rc) {
 503                         EFX_ERR(efx, "failed opening device.\n");
 504                         goto fail2;
 505                 }
 506         }
 507
 508         memset(&efx_tests, 0, sizeof(efx_tests));
 509
 510         rc = efx_selftest(efx, &efx_tests, test->flags);
 511
 512         if (!already_up)
 513                 dev_close(efx->net_dev);
 514
 515         EFX_LOG(efx, "%s %sline self-tests\n",
 516                 rc == 0 ? "passed" : "failed",
 517                 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 518
 519  fail2:
 520  fail1:
 521         /* Fill ethtool results structures */
 522         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 523         if (rc)
 524                 test->flags |= ETH_TEST_FL_FAILED;
 525 }
 526
 527 /* Restart autonegotiation */
 528 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 529 {
 530         struct efx_nic *efx = netdev_priv(net_dev);
 531
 532         return mii_nway_restart(&efx->mii);
 533 }
 534
 535 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 536 {
 537         struct efx_nic *efx = netdev_priv(net_dev);
 538
 539         return efx->link_up;
 540 }
 541
 542 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 543 {
 544         struct efx_nic *efx = netdev_priv(net_dev);
 545         struct efx_spi_device *spi = efx->spi_eeprom;
 546
 547         if (!spi)
 548                 return 0;
 549         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 550                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 551 }
 552
 553 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 554                                   struct ethtool_eeprom *eeprom, u8 *buf)
 555 {
 556         struct efx_nic *efx = netdev_priv(net_dev);
 557         struct efx_spi_device *spi = efx->spi_eeprom;
 558         size_t len;
 559         int rc;
 560
 561         rc = mutex_lock_interruptible(&efx->spi_lock);
 562         if (rc)
 563                 return rc;
 564         rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 565                              eeprom->len, &len, buf);
 566         mutex_unlock(&efx->spi_lock);
 567
 568         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 569         eeprom->len = len;
 570         return rc;
 571 }
 572
 573 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 574                                   struct ethtool_eeprom *eeprom, u8 *buf)
 575 {
 576         struct efx_nic *efx = netdev_priv(net_dev);
 577         struct efx_spi_device *spi = efx->spi_eeprom;
 578         size_t len;
 579         int rc;
 580
 581         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 582                 return -EINVAL;
 583
 584         rc = mutex_lock_interruptible(&efx->spi_lock);
 585         if (rc)
 586                 return rc;
 587         rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 588                               eeprom->len, &len, buf);
 589         mutex_unlock(&efx->spi_lock);
 590
 591         eeprom->len = len;
 592         return rc;
 593 }
 594
 595 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 596                                     struct ethtool_coalesce *coalesce)
 597 {
 598         struct efx_nic *efx = netdev_priv(net_dev);
 599         struct efx_tx_queue *tx_queue;
 600         struct efx_rx_queue *rx_queue;
 601         struct efx_channel *channel;
 602
 603         memset(coalesce, 0, sizeof(*coalesce));
 604
 605         /* Find lowest IRQ moderation across all used TX queues */
 606         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 607         efx_for_each_tx_queue(tx_queue, efx) {
 608                 channel = tx_queue->channel;
 609                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 610                         if (channel->used_flags != EFX_USED_BY_RX_TX)
 611                                 coalesce->tx_coalesce_usecs_irq =
 612                                         channel->irq_moderation;
 613                         else
 614                                 coalesce->tx_coalesce_usecs_irq = 0;
 615                 }
 616         }
 617
 618         /* Find lowest IRQ moderation across all used RX queues */
 619         coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
 620         efx_for_each_rx_queue(rx_queue, efx) {
 621                 channel = rx_queue->channel;
 622                 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
 623                         coalesce->rx_coalesce_usecs_irq =
 624                                 channel->irq_moderation;
 625         }
 626
 627         return 0;
 628 }
 629
 630 /* Set coalescing parameters
 631  * The difficulties occur for shared channels
 632  */
 633 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 634                                     struct ethtool_coalesce *coalesce)
 635 {
 636         struct efx_nic *efx = netdev_priv(net_dev);
 637         struct efx_channel *channel;
 638         struct efx_tx_queue *tx_queue;
 639         unsigned tx_usecs, rx_usecs;
 640
 641         if (coalesce->use_adaptive_rx_coalesce ||
 642             coalesce->use_adaptive_tx_coalesce)
 643                 return -EOPNOTSUPP;
 644
 645         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 646                 EFX_ERR(efx, "invalid coalescing setting. "
 647                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 648                 return -EOPNOTSUPP;
 649         }
 650
 651         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 652         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 653
 654         /* If the channel is shared only allow RX parameters to be set */
 655         efx_for_each_tx_queue(tx_queue, efx) {
 656                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 657                     tx_usecs) {
 658                         EFX_ERR(efx, "Channel is shared. "
 659                                 "Only RX coalescing may be set\n");
 660                         return -EOPNOTSUPP;
 661                 }
 662         }
 663
 664         efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
 665
 666         /* Reset channel to pick up new moderation value.  Note that
 667          * this may change the value of the irq_moderation field
 668          * (e.g. to allow for hardware timer granularity).
 669          */
 670         efx_for_each_channel(channel, efx)
 671                 falcon_set_int_moderation(channel);
 672
 673         return 0;
 674 }
 675
 676 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 677                                       struct ethtool_pauseparam *pause)
 678 {
 679         struct efx_nic *efx = netdev_priv(net_dev);
 680         enum efx_fc_type wanted_fc;
 681         bool reset;
 682
 683         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 684                      (pause->tx_pause ? EFX_FC_TX : 0) |
 685                      (pause->autoneg ? EFX_FC_AUTO : 0));
 686
 687         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 688                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
 689                 return -EINVAL;
 690         }
 691
 692         if (!(efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) &&
 693             (wanted_fc & EFX_FC_AUTO)) {
 694                 EFX_LOG(efx, "PHY does not support flow control "
 695                         "autonegotiation\n");
 696                 return -EINVAL;
 697         }
 698
 699         /* TX flow control may automatically turn itself off if the
 700          * link partner (intermittently) stops responding to pause
 701          * frames. There isn't any indication that this has happened,
 702          * so the best we do is leave it up to the user to spot this
 703          * and fix it be cycling transmit flow control on this end. */
 704         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 705         if (EFX_WORKAROUND_11482(efx) && reset) {
 706                 if (falcon_rev(efx) >= FALCON_REV_B0) {
 707                         /* Recover by resetting the EM block */
 708                         if (efx->link_up)
 709                                 falcon_drain_tx_fifo(efx);
 710                 } else {
 711                         /* Schedule a reset to recover */
 712                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 713                 }
 714         }
 715
 716         /* Try to push the pause parameters */
 717         mutex_lock(&efx->mac_lock);
 718
 719         efx->wanted_fc = wanted_fc;
 720         mdio_clause45_set_pause(efx);
 721         __efx_reconfigure_port(efx);
 722
 723         mutex_unlock(&efx->mac_lock);
 724
 725         return 0;
 726 }
 727
 728 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 729                                        struct ethtool_pauseparam *pause)
 730 {
 731         struct efx_nic *efx = netdev_priv(net_dev);
 732
 733         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 734         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 735         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 736 }
 737
 738
 739 struct ethtool_ops efx_ethtool_ops = {
 740         .get_settings           = efx_ethtool_get_settings,
 741         .set_settings           = efx_ethtool_set_settings,
 742         .get_drvinfo            = efx_ethtool_get_drvinfo,
 743         .nway_reset             = efx_ethtool_nway_reset,
 744         .get_link               = efx_ethtool_get_link,
 745         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 746         .get_eeprom             = efx_ethtool_get_eeprom,
 747         .set_eeprom             = efx_ethtool_set_eeprom,
 748         .get_coalesce           = efx_ethtool_get_coalesce,
 749         .set_coalesce           = efx_ethtool_set_coalesce,
 750         .get_pauseparam         = efx_ethtool_get_pauseparam,
 751         .set_pauseparam         = efx_ethtool_set_pauseparam,
 752         .get_rx_csum            = efx_ethtool_get_rx_csum,
 753         .set_rx_csum            = efx_ethtool_set_rx_csum,
 754         .get_tx_csum            = ethtool_op_get_tx_csum,
 755         .set_tx_csum            = ethtool_op_set_tx_csum,
 756         .get_sg                 = ethtool_op_get_sg,
 757         .set_sg                 = ethtool_op_set_sg,
 758         .get_tso                = ethtool_op_get_tso,
 759         .set_tso                = ethtool_op_set_tso,
 760         .get_flags              = ethtool_op_get_flags,
 761         .set_flags              = ethtool_op_set_flags,
 762         .get_sset_count         = efx_ethtool_get_sset_count,
 763         .self_test              = efx_ethtool_self_test,
 764         .get_strings            = efx_ethtool_get_strings,
 765         .phys_id                = efx_ethtool_phys_id,
 766         .get_ethtool_stats      = efx_ethtool_get_stats,
 767 };