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 2006-2009 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 "nic.h"
  19 #include "spi.h"
  20 #include "mdio_10g.h"
  21
  22 struct ethtool_string {
  23         char name[ETH_GSTRING_LEN];
  24 };
  25
  26 struct efx_ethtool_stat {
  27         const char *name;
  28         enum {
  29                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  30                 EFX_ETHTOOL_STAT_SOURCE_nic,
  31                 EFX_ETHTOOL_STAT_SOURCE_channel
  32         } source;
  33         unsigned offset;
  34         u64(*get_stat) (void *field); /* Reader function */
  35 };
  36
  37 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  38 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  39                                 get_stat_function) {                    \
  40         .name = #stat_name,                                             \
  41         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  42         .offset = ((((field_type *) 0) ==                               \
  43                       &((struct efx_##source_name *)0)->field) ?        \
  44                     offsetof(struct efx_##source_name, field) :         \
  45                     offsetof(struct efx_##source_name, field)),         \
  46         .get_stat = get_stat_function,                                  \
  47 }
  48
  49 static u64 efx_get_uint_stat(void *field)
  50 {
  51         return *(unsigned int *)field;
  52 }
  53
  54 static u64 efx_get_ulong_stat(void *field)
  55 {
  56         return *(unsigned long *)field;
  57 }
  58
  59 static u64 efx_get_u64_stat(void *field)
  60 {
  61         return *(u64 *) field;
  62 }
  63
  64 static u64 efx_get_atomic_stat(void *field)
  65 {
  66         return atomic_read((atomic_t *) field);
  67 }
  68
  69 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  70         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  71                           unsigned long, efx_get_ulong_stat)
  72
  73 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  74         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  75                           u64, efx_get_u64_stat)
  76
  77 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  78         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  79                          unsigned int, efx_get_uint_stat)
  80
  81 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  82         EFX_ETHTOOL_STAT(field, nic, field,                     \
  83                          atomic_t, efx_get_atomic_stat)
  84
  85 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
  86         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
  87                          unsigned int, efx_get_uint_stat)
  88
  89 static struct efx_ethtool_stat efx_ethtool_stats[] = {
  90         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
  91         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
  92         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
  93         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
  94         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
  95         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
  96         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
  97         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
  98         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
  99         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 100         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 101         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 102         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 103         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 104         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 105         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 106         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 119         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 120         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 121         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 122         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 124         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 125         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 126         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 127         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 128         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 129         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 130         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 131         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 132         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 133         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 134         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 135         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 150         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 151         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 152         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 153         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 154         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 155         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
 156         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 157 };
 158
 159 /* Number of ethtool statistics */
 160 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 161
 162 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
 163
 164 /**************************************************************************
 165  *
 166  * Ethtool operations
 167  *
 168  **************************************************************************
 169  */
 170
 171 /* Identify device by flashing LEDs */
 172 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
 173 {
 174         struct efx_nic *efx = netdev_priv(net_dev);
 175
 176         do {
 177                 efx->type->set_id_led(efx, EFX_LED_ON);
 178                 schedule_timeout_interruptible(HZ / 2);
 179
 180                 efx->type->set_id_led(efx, EFX_LED_OFF);
 181                 schedule_timeout_interruptible(HZ / 2);
 182         } while (!signal_pending(current) && --count != 0);
 183
 184         efx->type->set_id_led(efx, EFX_LED_DEFAULT);
 185         return 0;
 186 }
 187
 188 /* This must be called with rtnl_lock held. */
 189 int efx_ethtool_get_settings(struct net_device *net_dev,
 190                              struct ethtool_cmd *ecmd)
 191 {
 192         struct efx_nic *efx = netdev_priv(net_dev);
 193         struct efx_link_state *link_state = &efx->link_state;
 194
 195         mutex_lock(&efx->mac_lock);
 196         efx->phy_op->get_settings(efx, ecmd);
 197         mutex_unlock(&efx->mac_lock);
 198
 199         /* Falcon GMAC does not support 1000Mbps HD */
 200         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
 201         /* Both MACs support pause frames (bidirectional and respond-only) */
 202         ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
 203
 204         if (LOOPBACK_INTERNAL(efx)) {
 205                 ecmd->speed = link_state->speed;
 206                 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
 207         }
 208
 209         return 0;
 210 }
 211
 212 /* This must be called with rtnl_lock held. */
 213 int efx_ethtool_set_settings(struct net_device *net_dev,
 214                              struct ethtool_cmd *ecmd)
 215 {
 216         struct efx_nic *efx = netdev_priv(net_dev);
 217         int rc;
 218
 219         /* Falcon GMAC does not support 1000Mbps HD */
 220         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
 221                 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
 222                         " setting\n");
 223                 return -EINVAL;
 224         }
 225
 226         mutex_lock(&efx->mac_lock);
 227         rc = efx->phy_op->set_settings(efx, ecmd);
 228         mutex_unlock(&efx->mac_lock);
 229         return rc;
 230 }
 231
 232 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 233                                     struct ethtool_drvinfo *info)
 234 {
 235         struct efx_nic *efx = netdev_priv(net_dev);
 236
 237         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
 238         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 239         if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
 240                 siena_print_fwver(efx, info->fw_version,
 241                                   sizeof(info->fw_version));
 242         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 243 }
 244
 245 /**
 246  * efx_fill_test - fill in an individual self-test entry
 247  * @test_index:         Index of the test
 248  * @strings:            Ethtool strings, or %NULL
 249  * @data:               Ethtool test results, or %NULL
 250  * @test:               Pointer to test result (used only if data != %NULL)
 251  * @unit_format:        Unit name format (e.g. "chan\%d")
 252  * @unit_id:            Unit id (e.g. 0 for "chan0")
 253  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 254  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 255  *
 256  * Fill in an individual self-test entry.
 257  */
 258 static void efx_fill_test(unsigned int test_index,
 259                           struct ethtool_string *strings, u64 *data,
 260                           int *test, const char *unit_format, int unit_id,
 261                           const char *test_format, const char *test_id)
 262 {
 263         struct ethtool_string unit_str, test_str;
 264
 265         /* Fill data value, if applicable */
 266         if (data)
 267                 data[test_index] = *test;
 268
 269         /* Fill string, if applicable */
 270         if (strings) {
 271                 if (strchr(unit_format, '%'))
 272                         snprintf(unit_str.name, sizeof(unit_str.name),
 273                                  unit_format, unit_id);
 274                 else
 275                         strcpy(unit_str.name, unit_format);
 276                 snprintf(test_str.name, sizeof(test_str.name),
 277                          test_format, test_id);
 278                 snprintf(strings[test_index].name,
 279                          sizeof(strings[test_index].name),
 280                          "%-6s %-24s", unit_str.name, test_str.name);
 281         }
 282 }
 283
 284 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 285 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 286 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 287 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 288         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 289
 290 /**
 291  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 292  * @efx:                Efx NIC
 293  * @lb_tests:           Efx loopback self-test results structure
 294  * @mode:               Loopback test mode
 295  * @test_index:         Starting index of the test
 296  * @strings:            Ethtool strings, or %NULL
 297  * @data:               Ethtool test results, or %NULL
 298  */
 299 static int efx_fill_loopback_test(struct efx_nic *efx,
 300                                   struct efx_loopback_self_tests *lb_tests,
 301                                   enum efx_loopback_mode mode,
 302                                   unsigned int test_index,
 303                                   struct ethtool_string *strings, u64 *data)
 304 {
 305         struct efx_tx_queue *tx_queue;
 306
 307         efx_for_each_tx_queue(tx_queue, efx) {
 308                 efx_fill_test(test_index++, strings, data,
 309                               &lb_tests->tx_sent[tx_queue->queue],
 310                               EFX_TX_QUEUE_NAME(tx_queue),
 311                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 312                 efx_fill_test(test_index++, strings, data,
 313                               &lb_tests->tx_done[tx_queue->queue],
 314                               EFX_TX_QUEUE_NAME(tx_queue),
 315                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 316         }
 317         efx_fill_test(test_index++, strings, data,
 318                       &lb_tests->rx_good,
 319                       "rx", 0,
 320                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 321         efx_fill_test(test_index++, strings, data,
 322                       &lb_tests->rx_bad,
 323                       "rx", 0,
 324                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 325
 326         return test_index;
 327 }
 328
 329 /**
 330  * efx_ethtool_fill_self_tests - get self-test details
 331  * @efx:                Efx NIC
 332  * @tests:              Efx self-test results structure, or %NULL
 333  * @strings:            Ethtool strings, or %NULL
 334  * @data:               Ethtool test results, or %NULL
 335  */
 336 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 337                                        struct efx_self_tests *tests,
 338                                        struct ethtool_string *strings,
 339                                        u64 *data)
 340 {
 341         struct efx_channel *channel;
 342         unsigned int n = 0, i;
 343         enum efx_loopback_mode mode;
 344
 345         efx_fill_test(n++, strings, data, &tests->mdio,
 346                       "core", 0, "mdio", NULL);
 347         efx_fill_test(n++, strings, data, &tests->nvram,
 348                       "core", 0, "nvram", NULL);
 349         efx_fill_test(n++, strings, data, &tests->interrupt,
 350                       "core", 0, "interrupt", NULL);
 351
 352         /* Event queues */
 353         efx_for_each_channel(channel, efx) {
 354                 efx_fill_test(n++, strings, data,
 355                               &tests->eventq_dma[channel->channel],
 356                               EFX_CHANNEL_NAME(channel),
 357                               "eventq.dma", NULL);
 358                 efx_fill_test(n++, strings, data,
 359                               &tests->eventq_int[channel->channel],
 360                               EFX_CHANNEL_NAME(channel),
 361                               "eventq.int", NULL);
 362                 efx_fill_test(n++, strings, data,
 363                               &tests->eventq_poll[channel->channel],
 364                               EFX_CHANNEL_NAME(channel),
 365                               "eventq.poll", NULL);
 366         }
 367
 368         efx_fill_test(n++, strings, data, &tests->registers,
 369                       "core", 0, "registers", NULL);
 370
 371         if (efx->phy_op->run_tests != NULL) {
 372                 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
 373
 374                 for (i = 0; true; ++i) {
 375                         const char *name;
 376
 377                         EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
 378                         name = efx->phy_op->test_name(efx, i);
 379                         if (name == NULL)
 380                                 break;
 381
 382                         efx_fill_test(n++, strings, data, &tests->phy[i],
 383                                       "phy", 0, name, NULL);
 384                 }
 385         }
 386
 387         /* Loopback tests */
 388         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 389                 if (!(efx->loopback_modes & (1 << mode)))
 390                         continue;
 391                 n = efx_fill_loopback_test(efx,
 392                                            &tests->loopback[mode], mode, n,
 393                                            strings, data);
 394         }
 395
 396         return n;
 397 }
 398
 399 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 400                                       int string_set)
 401 {
 402         switch (string_set) {
 403         case ETH_SS_STATS:
 404                 return EFX_ETHTOOL_NUM_STATS;
 405         case ETH_SS_TEST:
 406                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 407                                                    NULL, NULL, NULL);
 408         default:
 409                 return -EINVAL;
 410         }
 411 }
 412
 413 static void efx_ethtool_get_strings(struct net_device *net_dev,
 414                                     u32 string_set, u8 *strings)
 415 {
 416         struct efx_nic *efx = netdev_priv(net_dev);
 417         struct ethtool_string *ethtool_strings =
 418                 (struct ethtool_string *)strings;
 419         int i;
 420
 421         switch (string_set) {
 422         case ETH_SS_STATS:
 423                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 424                         strncpy(ethtool_strings[i].name,
 425                                 efx_ethtool_stats[i].name,
 426                                 sizeof(ethtool_strings[i].name));
 427                 break;
 428         case ETH_SS_TEST:
 429                 efx_ethtool_fill_self_tests(efx, NULL,
 430                                             ethtool_strings, NULL);
 431                 break;
 432         default:
 433                 /* No other string sets */
 434                 break;
 435         }
 436 }
 437
 438 static void efx_ethtool_get_stats(struct net_device *net_dev,
 439                                   struct ethtool_stats *stats,
 440                                   u64 *data)
 441 {
 442         struct efx_nic *efx = netdev_priv(net_dev);
 443         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 444         struct efx_ethtool_stat *stat;
 445         struct efx_channel *channel;
 446         int i;
 447
 448         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 449
 450         /* Update MAC and NIC statistics */
 451         dev_get_stats(net_dev);
 452
 453         /* Fill detailed statistics buffer */
 454         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 455                 stat = &efx_ethtool_stats[i];
 456                 switch (stat->source) {
 457                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 458                         data[i] = stat->get_stat((void *)mac_stats +
 459                                                  stat->offset);
 460                         break;
 461                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 462                         data[i] = stat->get_stat((void *)efx + stat->offset);
 463                         break;
 464                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 465                         data[i] = 0;
 466                         efx_for_each_channel(channel, efx)
 467                                 data[i] += stat->get_stat((void *)channel +
 468                                                           stat->offset);
 469                         break;
 470                 }
 471         }
 472 }
 473
 474 static int efx_ethtool_set_tso(struct net_device *net_dev, u32 enable)
 475 {
 476         struct efx_nic *efx __attribute__ ((unused)) = netdev_priv(net_dev);
 477         unsigned long features;
 478
 479         features = NETIF_F_TSO;
 480         if (efx->type->offload_features & NETIF_F_V6_CSUM)
 481                 features |= NETIF_F_TSO6;
 482
 483         if (enable)
 484                 net_dev->features |= features;
 485         else
 486                 net_dev->features &= ~features;
 487
 488         return 0;
 489 }
 490
 491 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable)
 492 {
 493         struct efx_nic *efx = netdev_priv(net_dev);
 494         unsigned long features = efx->type->offload_features & NETIF_F_ALL_CSUM;
 495
 496         if (enable)
 497                 net_dev->features |= features;
 498         else
 499                 net_dev->features &= ~features;
 500
 501         return 0;
 502 }
 503
 504 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 505 {
 506         struct efx_nic *efx = netdev_priv(net_dev);
 507
 508         /* No way to stop the hardware doing the checks; we just
 509          * ignore the result.
 510          */
 511         efx->rx_checksum_enabled = !!enable;
 512
 513         return 0;
 514 }
 515
 516 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 517 {
 518         struct efx_nic *efx = netdev_priv(net_dev);
 519
 520         return efx->rx_checksum_enabled;
 521 }
 522
 523 static void efx_ethtool_self_test(struct net_device *net_dev,
 524                                   struct ethtool_test *test, u64 *data)
 525 {
 526         struct efx_nic *efx = netdev_priv(net_dev);
 527         struct efx_self_tests efx_tests;
 528         int already_up;
 529         int rc;
 530
 531         ASSERT_RTNL();
 532         if (efx->state != STATE_RUNNING) {
 533                 rc = -EIO;
 534                 goto fail1;
 535         }
 536
 537         /* We need rx buffers and interrupts. */
 538         already_up = (efx->net_dev->flags & IFF_UP);
 539         if (!already_up) {
 540                 rc = dev_open(efx->net_dev);
 541                 if (rc) {
 542                         EFX_ERR(efx, "failed opening device.\n");
 543                         goto fail2;
 544                 }
 545         }
 546
 547         memset(&efx_tests, 0, sizeof(efx_tests));
 548
 549         rc = efx_selftest(efx, &efx_tests, test->flags);
 550
 551         if (!already_up)
 552                 dev_close(efx->net_dev);
 553
 554         EFX_LOG(efx, "%s %sline self-tests\n",
 555                 rc == 0 ? "passed" : "failed",
 556                 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 557
 558  fail2:
 559  fail1:
 560         /* Fill ethtool results structures */
 561         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 562         if (rc)
 563                 test->flags |= ETH_TEST_FL_FAILED;
 564 }
 565
 566 /* Restart autonegotiation */
 567 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 568 {
 569         struct efx_nic *efx = netdev_priv(net_dev);
 570
 571         return mdio45_nway_restart(&efx->mdio);
 572 }
 573
 574 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 575 {
 576         struct efx_nic *efx = netdev_priv(net_dev);
 577
 578         return efx->link_state.up;
 579 }
 580
 581 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 582 {
 583         struct efx_nic *efx = netdev_priv(net_dev);
 584         struct efx_spi_device *spi = efx->spi_eeprom;
 585
 586         if (!spi)
 587                 return 0;
 588         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 589                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 590 }
 591
 592 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 593                                   struct ethtool_eeprom *eeprom, u8 *buf)
 594 {
 595         struct efx_nic *efx = netdev_priv(net_dev);
 596         struct efx_spi_device *spi = efx->spi_eeprom;
 597         size_t len;
 598         int rc;
 599
 600         rc = mutex_lock_interruptible(&efx->spi_lock);
 601         if (rc)
 602                 return rc;
 603         rc = falcon_spi_read(efx, spi,
 604                              eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 605                              eeprom->len, &len, buf);
 606         mutex_unlock(&efx->spi_lock);
 607
 608         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 609         eeprom->len = len;
 610         return rc;
 611 }
 612
 613 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 614                                   struct ethtool_eeprom *eeprom, u8 *buf)
 615 {
 616         struct efx_nic *efx = netdev_priv(net_dev);
 617         struct efx_spi_device *spi = efx->spi_eeprom;
 618         size_t len;
 619         int rc;
 620
 621         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 622                 return -EINVAL;
 623
 624         rc = mutex_lock_interruptible(&efx->spi_lock);
 625         if (rc)
 626                 return rc;
 627         rc = falcon_spi_write(efx, spi,
 628                               eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 629                               eeprom->len, &len, buf);
 630         mutex_unlock(&efx->spi_lock);
 631
 632         eeprom->len = len;
 633         return rc;
 634 }
 635
 636 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 637                                     struct ethtool_coalesce *coalesce)
 638 {
 639         struct efx_nic *efx = netdev_priv(net_dev);
 640         struct efx_tx_queue *tx_queue;
 641         struct efx_channel *channel;
 642
 643         memset(coalesce, 0, sizeof(*coalesce));
 644
 645         /* Find lowest IRQ moderation across all used TX queues */
 646         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 647         efx_for_each_tx_queue(tx_queue, efx) {
 648                 channel = tx_queue->channel;
 649                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 650                         if (channel->used_flags != EFX_USED_BY_RX_TX)
 651                                 coalesce->tx_coalesce_usecs_irq =
 652                                         channel->irq_moderation;
 653                         else
 654                                 coalesce->tx_coalesce_usecs_irq = 0;
 655                 }
 656         }
 657
 658         coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
 659         coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
 660
 661         coalesce->tx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 662         coalesce->rx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 663
 664         return 0;
 665 }
 666
 667 /* Set coalescing parameters
 668  * The difficulties occur for shared channels
 669  */
 670 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 671                                     struct ethtool_coalesce *coalesce)
 672 {
 673         struct efx_nic *efx = netdev_priv(net_dev);
 674         struct efx_channel *channel;
 675         struct efx_tx_queue *tx_queue;
 676         unsigned tx_usecs, rx_usecs, adaptive;
 677
 678         if (coalesce->use_adaptive_tx_coalesce)
 679                 return -EOPNOTSUPP;
 680
 681         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 682                 EFX_ERR(efx, "invalid coalescing setting. "
 683                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 684                 return -EOPNOTSUPP;
 685         }
 686
 687         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 688         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 689         adaptive = coalesce->use_adaptive_rx_coalesce;
 690
 691         /* If the channel is shared only allow RX parameters to be set */
 692         efx_for_each_tx_queue(tx_queue, efx) {
 693                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 694                     tx_usecs) {
 695                         EFX_ERR(efx, "Channel is shared. "
 696                                 "Only RX coalescing may be set\n");
 697                         return -EOPNOTSUPP;
 698                 }
 699         }
 700
 701         efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
 702         efx_for_each_channel(channel, efx)
 703                 efx->type->push_irq_moderation(channel);
 704
 705         return 0;
 706 }
 707
 708 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 709                                       struct ethtool_pauseparam *pause)
 710 {
 711         struct efx_nic *efx = netdev_priv(net_dev);
 712         enum efx_fc_type wanted_fc, old_fc;
 713         u32 old_adv;
 714         bool reset;
 715         int rc = 0;
 716
 717         mutex_lock(&efx->mac_lock);
 718
 719         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 720                      (pause->tx_pause ? EFX_FC_TX : 0) |
 721                      (pause->autoneg ? EFX_FC_AUTO : 0));
 722
 723         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 724                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
 725                 rc = -EINVAL;
 726                 goto out;
 727         }
 728
 729         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
 730                 EFX_LOG(efx, "Autonegotiation is disabled\n");
 731                 rc = -EINVAL;
 732                 goto out;
 733         }
 734
 735         /* TX flow control may automatically turn itself off if the
 736          * link partner (intermittently) stops responding to pause
 737          * frames. There isn't any indication that this has happened,
 738          * so the best we do is leave it up to the user to spot this
 739          * and fix it be cycling transmit flow control on this end. */
 740         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 741         if (EFX_WORKAROUND_11482(efx) && reset) {
 742                 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
 743                         /* Recover by resetting the EM block */
 744                         falcon_stop_nic_stats(efx);
 745                         falcon_drain_tx_fifo(efx);
 746                         efx->mac_op->reconfigure(efx);
 747                         falcon_start_nic_stats(efx);
 748                 } else {
 749                         /* Schedule a reset to recover */
 750                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 751                 }
 752         }
 753
 754         old_adv = efx->link_advertising;
 755         old_fc = efx->wanted_fc;
 756         efx_link_set_wanted_fc(efx, wanted_fc);
 757         if (efx->link_advertising != old_adv ||
 758             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
 759                 rc = efx->phy_op->reconfigure(efx);
 760                 if (rc) {
 761                         EFX_ERR(efx, "Unable to advertise requested flow "
 762                                 "control setting\n");
 763                         goto out;
 764                 }
 765         }
 766
 767         /* Reconfigure the MAC. The PHY *may* generate a link state change event
 768          * if the user just changed the advertised capabilities, but there's no
 769          * harm doing this twice */
 770         efx->mac_op->reconfigure(efx);
 771
 772 out:
 773         mutex_unlock(&efx->mac_lock);
 774
 775         return rc;
 776 }
 777
 778 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 779                                        struct ethtool_pauseparam *pause)
 780 {
 781         struct efx_nic *efx = netdev_priv(net_dev);
 782
 783         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 784         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 785         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 786 }
 787
 788
 789 static void efx_ethtool_get_wol(struct net_device *net_dev,
 790                                 struct ethtool_wolinfo *wol)
 791 {
 792         struct efx_nic *efx = netdev_priv(net_dev);
 793         return efx->type->get_wol(efx, wol);
 794 }
 795
 796
 797 static int efx_ethtool_set_wol(struct net_device *net_dev,
 798                                struct ethtool_wolinfo *wol)
 799 {
 800         struct efx_nic *efx = netdev_priv(net_dev);
 801         return efx->type->set_wol(efx, wol->wolopts);
 802 }
 803
 804 extern int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 805 {
 806         struct efx_nic *efx = netdev_priv(net_dev);
 807         enum reset_type method;
 808         enum {
 809                 ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
 810                                            ETH_RESET_OFFLOAD | ETH_RESET_MAC)
 811         };
 812
 813         /* Check for minimal reset flags */
 814         if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
 815                 return -EINVAL;
 816         *flags ^= ETH_RESET_EFX_INVISIBLE;
 817         method = RESET_TYPE_INVISIBLE;
 818
 819         if (*flags & ETH_RESET_PHY) {
 820                 *flags ^= ETH_RESET_PHY;
 821                 method = RESET_TYPE_ALL;
 822         }
 823
 824         if ((*flags & efx->type->reset_world_flags) ==
 825             efx->type->reset_world_flags) {
 826                 *flags ^= efx->type->reset_world_flags;
 827                 method = RESET_TYPE_WORLD;
 828         }
 829
 830         return efx_reset(efx, method);
 831 }
 832
 833 const struct ethtool_ops efx_ethtool_ops = {
 834         .get_settings           = efx_ethtool_get_settings,
 835         .set_settings           = efx_ethtool_set_settings,
 836         .get_drvinfo            = efx_ethtool_get_drvinfo,
 837         .nway_reset             = efx_ethtool_nway_reset,
 838         .get_link               = efx_ethtool_get_link,
 839         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 840         .get_eeprom             = efx_ethtool_get_eeprom,
 841         .set_eeprom             = efx_ethtool_set_eeprom,
 842         .get_coalesce           = efx_ethtool_get_coalesce,
 843         .set_coalesce           = efx_ethtool_set_coalesce,
 844         .get_pauseparam         = efx_ethtool_get_pauseparam,
 845         .set_pauseparam         = efx_ethtool_set_pauseparam,
 846         .get_rx_csum            = efx_ethtool_get_rx_csum,
 847         .set_rx_csum            = efx_ethtool_set_rx_csum,
 848         .get_tx_csum            = ethtool_op_get_tx_csum,
 849         /* Need to enable/disable IPv6 too */
 850         .set_tx_csum            = efx_ethtool_set_tx_csum,
 851         .get_sg                 = ethtool_op_get_sg,
 852         .set_sg                 = ethtool_op_set_sg,
 853         .get_tso                = ethtool_op_get_tso,
 854         /* Need to enable/disable TSO-IPv6 too */
 855         .set_tso                = efx_ethtool_set_tso,
 856         .get_flags              = ethtool_op_get_flags,
 857         .set_flags              = ethtool_op_set_flags,
 858         .get_sset_count         = efx_ethtool_get_sset_count,
 859         .self_test              = efx_ethtool_self_test,
 860         .get_strings            = efx_ethtool_get_strings,
 861         .phys_id                = efx_ethtool_phys_id,
 862         .get_ethtool_stats      = efx_ethtool_get_stats,
 863         .get_wol                = efx_ethtool_get_wol,
 864         .set_wol                = efx_ethtool_set_wol,
 865         .reset                  = efx_ethtool_reset,
 866 };