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/mdio.h>
  14 #include <linux/rtnetlink.h>
  15 #include "net_driver.h"
  16 #include "workarounds.h"
  17 #include "selftest.h"
  18 #include "efx.h"
  19 #include "ethtool.h"
  20 #include "falcon.h"
  21 #include "spi.h"
  22 #include "mdio_10g.h"
  23
  24 const char *efx_loopback_mode_names[] = {
  25         [LOOPBACK_NONE]         = "NONE",
  26         [LOOPBACK_GMAC]         = "GMAC",
  27         [LOOPBACK_XGMII]        = "XGMII",
  28         [LOOPBACK_XGXS]         = "XGXS",
  29         [LOOPBACK_XAUI]         = "XAUI",
  30         [LOOPBACK_GPHY]         = "GPHY",
  31         [LOOPBACK_PHYXS]        = "PHYXS",
  32         [LOOPBACK_PCS]          = "PCS",
  33         [LOOPBACK_PMAPMD]       = "PMA/PMD",
  34         [LOOPBACK_NETWORK]      = "NETWORK",
  35 };
  36
  37 struct ethtool_string {
  38         char name[ETH_GSTRING_LEN];
  39 };
  40
  41 struct efx_ethtool_stat {
  42         const char *name;
  43         enum {
  44                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  45                 EFX_ETHTOOL_STAT_SOURCE_nic,
  46                 EFX_ETHTOOL_STAT_SOURCE_channel
  47         } source;
  48         unsigned offset;
  49         u64(*get_stat) (void *field); /* Reader function */
  50 };
  51
  52 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  53 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  54                                 get_stat_function) {                    \
  55         .name = #stat_name,                                             \
  56         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  57         .offset = ((((field_type *) 0) ==                               \
  58                       &((struct efx_##source_name *)0)->field) ?        \
  59                     offsetof(struct efx_##source_name, field) :         \
  60                     offsetof(struct efx_##source_name, field)),         \
  61         .get_stat = get_stat_function,                                  \
  62 }
  63
  64 static u64 efx_get_uint_stat(void *field)
  65 {
  66         return *(unsigned int *)field;
  67 }
  68
  69 static u64 efx_get_ulong_stat(void *field)
  70 {
  71         return *(unsigned long *)field;
  72 }
  73
  74 static u64 efx_get_u64_stat(void *field)
  75 {
  76         return *(u64 *) field;
  77 }
  78
  79 static u64 efx_get_atomic_stat(void *field)
  80 {
  81         return atomic_read((atomic_t *) field);
  82 }
  83
  84 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  85         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  86                           unsigned long, efx_get_ulong_stat)
  87
  88 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  89         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  90                           u64, efx_get_u64_stat)
  91
  92 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  93         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  94                          unsigned int, efx_get_uint_stat)
  95
  96 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  97         EFX_ETHTOOL_STAT(field, nic, field,                     \
  98                          atomic_t, efx_get_atomic_stat)
  99
 100 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
 101         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
 102                          unsigned int, efx_get_uint_stat)
 103
 104 static struct efx_ethtool_stat efx_ethtool_stats[] = {
 105         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
 106         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
 107         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 120         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 121         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 122         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 124         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 125         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 126         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 127         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 128         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 129         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 130         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 131         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 132         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 133         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 134         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 135         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 136         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 151         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 152         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 153         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 154         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 155         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 156         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 157         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 158         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 159         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 160         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 161         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 162         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 163         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 164         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 165         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 166         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 167         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 168         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 169         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 170         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 171 };
 172
 173 /* Number of ethtool statistics */
 174 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 175
 176 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
 177
 178 /**************************************************************************
 179  *
 180  * Ethtool operations
 181  *
 182  **************************************************************************
 183  */
 184
 185 /* Identify device by flashing LEDs */
 186 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
 187 {
 188         struct efx_nic *efx = netdev_priv(net_dev);
 189
 190         efx->board_info.blink(efx, 1);
 191         set_current_state(TASK_INTERRUPTIBLE);
 192         if (count)
 193                 schedule_timeout(count * HZ);
 194         else
 195                 schedule();
 196         efx->board_info.blink(efx, 0);
 197         return 0;
 198 }
 199
 200 /* This must be called with rtnl_lock held. */
 201 int efx_ethtool_get_settings(struct net_device *net_dev,
 202                              struct ethtool_cmd *ecmd)
 203 {
 204         struct efx_nic *efx = netdev_priv(net_dev);
 205
 206         mutex_lock(&efx->mac_lock);
 207         efx->phy_op->get_settings(efx, ecmd);
 208         mutex_unlock(&efx->mac_lock);
 209
 210         /* Falcon GMAC does not support 1000Mbps HD */
 211         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
 212
 213         return 0;
 214 }
 215
 216 /* This must be called with rtnl_lock held. */
 217 int efx_ethtool_set_settings(struct net_device *net_dev,
 218                              struct ethtool_cmd *ecmd)
 219 {
 220         struct efx_nic *efx = netdev_priv(net_dev);
 221         int rc;
 222
 223         /* Falcon GMAC does not support 1000Mbps HD */
 224         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
 225                 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
 226                         " setting\n");
 227                 return -EINVAL;
 228         }
 229
 230         mutex_lock(&efx->mac_lock);
 231         rc = efx->phy_op->set_settings(efx, ecmd);
 232         mutex_unlock(&efx->mac_lock);
 233         if (!rc)
 234                 efx_reconfigure_port(efx);
 235
 236         return rc;
 237 }
 238
 239 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 240                                     struct ethtool_drvinfo *info)
 241 {
 242         struct efx_nic *efx = netdev_priv(net_dev);
 243
 244         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
 245         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 246         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 247 }
 248
 249 /**
 250  * efx_fill_test - fill in an individual self-test entry
 251  * @test_index:         Index of the test
 252  * @strings:            Ethtool strings, or %NULL
 253  * @data:               Ethtool test results, or %NULL
 254  * @test:               Pointer to test result (used only if data != %NULL)
 255  * @unit_format:        Unit name format (e.g. "chan\%d")
 256  * @unit_id:            Unit id (e.g. 0 for "chan0")
 257  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 258  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 259  *
 260  * Fill in an individual self-test entry.
 261  */
 262 static void efx_fill_test(unsigned int test_index,
 263                           struct ethtool_string *strings, u64 *data,
 264                           int *test, const char *unit_format, int unit_id,
 265                           const char *test_format, const char *test_id)
 266 {
 267         struct ethtool_string unit_str, test_str;
 268
 269         /* Fill data value, if applicable */
 270         if (data)
 271                 data[test_index] = *test;
 272
 273         /* Fill string, if applicable */
 274         if (strings) {
 275                 if (strchr(unit_format, '%'))
 276                         snprintf(unit_str.name, sizeof(unit_str.name),
 277                                  unit_format, unit_id);
 278                 else
 279                         strcpy(unit_str.name, unit_format);
 280                 snprintf(test_str.name, sizeof(test_str.name),
 281                          test_format, test_id);
 282                 snprintf(strings[test_index].name,
 283                          sizeof(strings[test_index].name),
 284                          "%-6s %-24s", unit_str.name, test_str.name);
 285         }
 286 }
 287
 288 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 289 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 290 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 291 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 292         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
 293
 294 /**
 295  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 296  * @efx:                Efx NIC
 297  * @lb_tests:           Efx loopback self-test results structure
 298  * @mode:               Loopback test mode
 299  * @test_index:         Starting index of the test
 300  * @strings:            Ethtool strings, or %NULL
 301  * @data:               Ethtool test results, or %NULL
 302  */
 303 static int efx_fill_loopback_test(struct efx_nic *efx,
 304                                   struct efx_loopback_self_tests *lb_tests,
 305                                   enum efx_loopback_mode mode,
 306                                   unsigned int test_index,
 307                                   struct ethtool_string *strings, u64 *data)
 308 {
 309         struct efx_tx_queue *tx_queue;
 310
 311         efx_for_each_tx_queue(tx_queue, efx) {
 312                 efx_fill_test(test_index++, strings, data,
 313                               &lb_tests->tx_sent[tx_queue->queue],
 314                               EFX_TX_QUEUE_NAME(tx_queue),
 315                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 316                 efx_fill_test(test_index++, strings, data,
 317                               &lb_tests->tx_done[tx_queue->queue],
 318                               EFX_TX_QUEUE_NAME(tx_queue),
 319                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 320         }
 321         efx_fill_test(test_index++, strings, data,
 322                       &lb_tests->rx_good,
 323                       "rx", 0,
 324                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 325         efx_fill_test(test_index++, strings, data,
 326                       &lb_tests->rx_bad,
 327                       "rx", 0,
 328                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 329
 330         return test_index;
 331 }
 332
 333 /**
 334  * efx_ethtool_fill_self_tests - get self-test details
 335  * @efx:                Efx NIC
 336  * @tests:              Efx self-test results structure, or %NULL
 337  * @strings:            Ethtool strings, or %NULL
 338  * @data:               Ethtool test results, or %NULL
 339  */
 340 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 341                                        struct efx_self_tests *tests,
 342                                        struct ethtool_string *strings,
 343                                        u64 *data)
 344 {
 345         struct efx_channel *channel;
 346         unsigned int n = 0, i;
 347         enum efx_loopback_mode mode;
 348
 349         efx_fill_test(n++, strings, data, &tests->mdio,
 350                       "core", 0, "mdio", NULL);
 351         efx_fill_test(n++, strings, data, &tests->nvram,
 352                       "core", 0, "nvram", NULL);
 353         efx_fill_test(n++, strings, data, &tests->interrupt,
 354                       "core", 0, "interrupt", NULL);
 355
 356         /* Event queues */
 357         efx_for_each_channel(channel, efx) {
 358                 efx_fill_test(n++, strings, data,
 359                               &tests->eventq_dma[channel->channel],
 360                               EFX_CHANNEL_NAME(channel),
 361                               "eventq.dma", NULL);
 362                 efx_fill_test(n++, strings, data,
 363                               &tests->eventq_int[channel->channel],
 364                               EFX_CHANNEL_NAME(channel),
 365                               "eventq.int", NULL);
 366                 efx_fill_test(n++, strings, data,
 367                               &tests->eventq_poll[channel->channel],
 368                               EFX_CHANNEL_NAME(channel),
 369                               "eventq.poll", NULL);
 370         }
 371
 372         efx_fill_test(n++, strings, data, &tests->registers,
 373                       "core", 0, "registers", NULL);
 374
 375         for (i = 0; i < efx->phy_op->num_tests; i++)
 376                 efx_fill_test(n++, strings, data, &tests->phy[i],
 377                               "phy", 0, efx->phy_op->test_names[i], NULL);
 378
 379         /* Loopback tests */
 380         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 381                 if (!(efx->loopback_modes & (1 << mode)))
 382                         continue;
 383                 n = efx_fill_loopback_test(efx,
 384                                            &tests->loopback[mode], mode, n,
 385                                            strings, data);
 386         }
 387
 388         return n;
 389 }
 390
 391 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 392                                       int string_set)
 393 {
 394         switch (string_set) {
 395         case ETH_SS_STATS:
 396                 return EFX_ETHTOOL_NUM_STATS;
 397         case ETH_SS_TEST:
 398                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 399                                                    NULL, NULL, NULL);
 400         default:
 401                 return -EINVAL;
 402         }
 403 }
 404
 405 static void efx_ethtool_get_strings(struct net_device *net_dev,
 406                                     u32 string_set, u8 *strings)
 407 {
 408         struct efx_nic *efx = netdev_priv(net_dev);
 409         struct ethtool_string *ethtool_strings =
 410                 (struct ethtool_string *)strings;
 411         int i;
 412
 413         switch (string_set) {
 414         case ETH_SS_STATS:
 415                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 416                         strncpy(ethtool_strings[i].name,
 417                                 efx_ethtool_stats[i].name,
 418                                 sizeof(ethtool_strings[i].name));
 419                 break;
 420         case ETH_SS_TEST:
 421                 efx_ethtool_fill_self_tests(efx, NULL,
 422                                             ethtool_strings, NULL);
 423                 break;
 424         default:
 425                 /* No other string sets */
 426                 break;
 427         }
 428 }
 429
 430 static void efx_ethtool_get_stats(struct net_device *net_dev,
 431                                   struct ethtool_stats *stats,
 432                                   u64 *data)
 433 {
 434         struct efx_nic *efx = netdev_priv(net_dev);
 435         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 436         struct efx_ethtool_stat *stat;
 437         struct efx_channel *channel;
 438         int i;
 439
 440         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 441
 442         /* Update MAC and NIC statistics */
 443         dev_get_stats(net_dev);
 444
 445         /* Fill detailed statistics buffer */
 446         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 447                 stat = &efx_ethtool_stats[i];
 448                 switch (stat->source) {
 449                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 450                         data[i] = stat->get_stat((void *)mac_stats +
 451                                                  stat->offset);
 452                         break;
 453                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 454                         data[i] = stat->get_stat((void *)efx + stat->offset);
 455                         break;
 456                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 457                         data[i] = 0;
 458                         efx_for_each_channel(channel, efx)
 459                                 data[i] += stat->get_stat((void *)channel +
 460                                                           stat->offset);
 461                         break;
 462                 }
 463         }
 464 }
 465
 466 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 467 {
 468         struct efx_nic *efx = netdev_priv(net_dev);
 469
 470         /* No way to stop the hardware doing the checks; we just
 471          * ignore the result.
 472          */
 473         efx->rx_checksum_enabled = !!enable;
 474
 475         return 0;
 476 }
 477
 478 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 479 {
 480         struct efx_nic *efx = netdev_priv(net_dev);
 481
 482         return efx->rx_checksum_enabled;
 483 }
 484
 485 static void efx_ethtool_self_test(struct net_device *net_dev,
 486                                   struct ethtool_test *test, u64 *data)
 487 {
 488         struct efx_nic *efx = netdev_priv(net_dev);
 489         struct efx_self_tests efx_tests;
 490         int already_up;
 491         int rc;
 492
 493         ASSERT_RTNL();
 494         if (efx->state != STATE_RUNNING) {
 495                 rc = -EIO;
 496                 goto fail1;
 497         }
 498
 499         /* We need rx buffers and interrupts. */
 500         already_up = (efx->net_dev->flags & IFF_UP);
 501         if (!already_up) {
 502                 rc = dev_open(efx->net_dev);
 503                 if (rc) {
 504                         EFX_ERR(efx, "failed opening device.\n");
 505                         goto fail2;
 506                 }
 507         }
 508
 509         memset(&efx_tests, 0, sizeof(efx_tests));
 510
 511         rc = efx_selftest(efx, &efx_tests, test->flags);
 512
 513         if (!already_up)
 514                 dev_close(efx->net_dev);
 515
 516         EFX_LOG(efx, "%s %sline self-tests\n",
 517                 rc == 0 ? "passed" : "failed",
 518                 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 519
 520  fail2:
 521  fail1:
 522         /* Fill ethtool results structures */
 523         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 524         if (rc)
 525                 test->flags |= ETH_TEST_FL_FAILED;
 526 }
 527
 528 /* Restart autonegotiation */
 529 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 530 {
 531         struct efx_nic *efx = netdev_priv(net_dev);
 532
 533         return mdio45_nway_restart(&efx->mdio);
 534 }
 535
 536 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 537 {
 538         struct efx_nic *efx = netdev_priv(net_dev);
 539
 540         return efx->link_up;
 541 }
 542
 543 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 544 {
 545         struct efx_nic *efx = netdev_priv(net_dev);
 546         struct efx_spi_device *spi = efx->spi_eeprom;
 547
 548         if (!spi)
 549                 return 0;
 550         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 551                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 552 }
 553
 554 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 555                                   struct ethtool_eeprom *eeprom, u8 *buf)
 556 {
 557         struct efx_nic *efx = netdev_priv(net_dev);
 558         struct efx_spi_device *spi = efx->spi_eeprom;
 559         size_t len;
 560         int rc;
 561
 562         rc = mutex_lock_interruptible(&efx->spi_lock);
 563         if (rc)
 564                 return rc;
 565         rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 566                              eeprom->len, &len, buf);
 567         mutex_unlock(&efx->spi_lock);
 568
 569         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 570         eeprom->len = len;
 571         return rc;
 572 }
 573
 574 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 575                                   struct ethtool_eeprom *eeprom, u8 *buf)
 576 {
 577         struct efx_nic *efx = netdev_priv(net_dev);
 578         struct efx_spi_device *spi = efx->spi_eeprom;
 579         size_t len;
 580         int rc;
 581
 582         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 583                 return -EINVAL;
 584
 585         rc = mutex_lock_interruptible(&efx->spi_lock);
 586         if (rc)
 587                 return rc;
 588         rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 589                               eeprom->len, &len, buf);
 590         mutex_unlock(&efx->spi_lock);
 591
 592         eeprom->len = len;
 593         return rc;
 594 }
 595
 596 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 597                                     struct ethtool_coalesce *coalesce)
 598 {
 599         struct efx_nic *efx = netdev_priv(net_dev);
 600         struct efx_tx_queue *tx_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         coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
 619         coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
 620
 621         return 0;
 622 }
 623
 624 /* Set coalescing parameters
 625  * The difficulties occur for shared channels
 626  */
 627 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 628                                     struct ethtool_coalesce *coalesce)
 629 {
 630         struct efx_nic *efx = netdev_priv(net_dev);
 631         struct efx_channel *channel;
 632         struct efx_tx_queue *tx_queue;
 633         unsigned tx_usecs, rx_usecs, adaptive;
 634
 635         if (coalesce->use_adaptive_tx_coalesce)
 636                 return -EOPNOTSUPP;
 637
 638         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 639                 EFX_ERR(efx, "invalid coalescing setting. "
 640                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 641                 return -EOPNOTSUPP;
 642         }
 643
 644         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 645         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 646         adaptive = coalesce->use_adaptive_rx_coalesce;
 647
 648         /* If the channel is shared only allow RX parameters to be set */
 649         efx_for_each_tx_queue(tx_queue, efx) {
 650                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 651                     tx_usecs) {
 652                         EFX_ERR(efx, "Channel is shared. "
 653                                 "Only RX coalescing may be set\n");
 654                         return -EOPNOTSUPP;
 655                 }
 656         }
 657
 658         efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
 659
 660         /* Reset channel to pick up new moderation value.  Note that
 661          * this may change the value of the irq_moderation field
 662          * (e.g. to allow for hardware timer granularity).
 663          */
 664         efx_for_each_channel(channel, efx)
 665                 falcon_set_int_moderation(channel);
 666
 667         return 0;
 668 }
 669
 670 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 671                                       struct ethtool_pauseparam *pause)
 672 {
 673         struct efx_nic *efx = netdev_priv(net_dev);
 674         enum efx_fc_type wanted_fc;
 675         bool reset;
 676
 677         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 678                      (pause->tx_pause ? EFX_FC_TX : 0) |
 679                      (pause->autoneg ? EFX_FC_AUTO : 0));
 680
 681         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 682                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
 683                 return -EINVAL;
 684         }
 685
 686         if (!(efx->phy_op->mmds & MDIO_DEVS_AN) &&
 687             (wanted_fc & EFX_FC_AUTO)) {
 688                 EFX_LOG(efx, "PHY does not support flow control "
 689                         "autonegotiation\n");
 690                 return -EINVAL;
 691         }
 692
 693         /* TX flow control may automatically turn itself off if the
 694          * link partner (intermittently) stops responding to pause
 695          * frames. There isn't any indication that this has happened,
 696          * so the best we do is leave it up to the user to spot this
 697          * and fix it be cycling transmit flow control on this end. */
 698         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 699         if (EFX_WORKAROUND_11482(efx) && reset) {
 700                 if (falcon_rev(efx) >= FALCON_REV_B0) {
 701                         /* Recover by resetting the EM block */
 702                         if (efx->link_up)
 703                                 falcon_drain_tx_fifo(efx);
 704                 } else {
 705                         /* Schedule a reset to recover */
 706                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 707                 }
 708         }
 709
 710         /* Try to push the pause parameters */
 711         mutex_lock(&efx->mac_lock);
 712
 713         efx->wanted_fc = wanted_fc;
 714         if (efx->phy_op->mmds & MDIO_DEVS_AN)
 715                 mdio45_ethtool_spauseparam_an(&efx->mdio, pause);
 716         __efx_reconfigure_port(efx);
 717
 718         mutex_unlock(&efx->mac_lock);
 719
 720         return 0;
 721 }
 722
 723 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 724                                        struct ethtool_pauseparam *pause)
 725 {
 726         struct efx_nic *efx = netdev_priv(net_dev);
 727
 728         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 729         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 730         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 731 }
 732
 733
 734 const struct ethtool_ops efx_ethtool_ops = {
 735         .get_settings           = efx_ethtool_get_settings,
 736         .set_settings           = efx_ethtool_set_settings,
 737         .get_drvinfo            = efx_ethtool_get_drvinfo,
 738         .nway_reset             = efx_ethtool_nway_reset,
 739         .get_link               = efx_ethtool_get_link,
 740         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 741         .get_eeprom             = efx_ethtool_get_eeprom,
 742         .set_eeprom             = efx_ethtool_set_eeprom,
 743         .get_coalesce           = efx_ethtool_get_coalesce,
 744         .set_coalesce           = efx_ethtool_set_coalesce,
 745         .get_pauseparam         = efx_ethtool_get_pauseparam,
 746         .set_pauseparam         = efx_ethtool_set_pauseparam,
 747         .get_rx_csum            = efx_ethtool_get_rx_csum,
 748         .set_rx_csum            = efx_ethtool_set_rx_csum,
 749         .get_tx_csum            = ethtool_op_get_tx_csum,
 750         .set_tx_csum            = ethtool_op_set_tx_csum,
 751         .get_sg                 = ethtool_op_get_sg,
 752         .set_sg                 = ethtool_op_set_sg,
 753         .get_tso                = ethtool_op_get_tso,
 754         .set_tso                = ethtool_op_set_tso,
 755         .get_flags              = ethtool_op_get_flags,
 756         .set_flags              = ethtool_op_set_flags,
 757         .get_sset_count         = efx_ethtool_get_sset_count,
 758         .self_test              = efx_ethtool_self_test,
 759         .get_strings            = efx_ethtool_get_strings,
 760         .phys_id                = efx_ethtool_phys_id,
 761         .get_ethtool_stats      = efx_ethtool_get_stats,
 762 };