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 "falcon.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         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 240 }
 241
 242 /**
 243  * efx_fill_test - fill in an individual self-test entry
 244  * @test_index:         Index of the test
 245  * @strings:            Ethtool strings, or %NULL
 246  * @data:               Ethtool test results, or %NULL
 247  * @test:               Pointer to test result (used only if data != %NULL)
 248  * @unit_format:        Unit name format (e.g. "chan\%d")
 249  * @unit_id:            Unit id (e.g. 0 for "chan0")
 250  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 251  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 252  *
 253  * Fill in an individual self-test entry.
 254  */
 255 static void efx_fill_test(unsigned int test_index,
 256                           struct ethtool_string *strings, u64 *data,
 257                           int *test, const char *unit_format, int unit_id,
 258                           const char *test_format, const char *test_id)
 259 {
 260         struct ethtool_string unit_str, test_str;
 261
 262         /* Fill data value, if applicable */
 263         if (data)
 264                 data[test_index] = *test;
 265
 266         /* Fill string, if applicable */
 267         if (strings) {
 268                 if (strchr(unit_format, '%'))
 269                         snprintf(unit_str.name, sizeof(unit_str.name),
 270                                  unit_format, unit_id);
 271                 else
 272                         strcpy(unit_str.name, unit_format);
 273                 snprintf(test_str.name, sizeof(test_str.name),
 274                          test_format, test_id);
 275                 snprintf(strings[test_index].name,
 276                          sizeof(strings[test_index].name),
 277                          "%-6s %-24s", unit_str.name, test_str.name);
 278         }
 279 }
 280
 281 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 282 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 283 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 284 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 285         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 286
 287 /**
 288  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 289  * @efx:                Efx NIC
 290  * @lb_tests:           Efx loopback self-test results structure
 291  * @mode:               Loopback test mode
 292  * @test_index:         Starting index of the test
 293  * @strings:            Ethtool strings, or %NULL
 294  * @data:               Ethtool test results, or %NULL
 295  */
 296 static int efx_fill_loopback_test(struct efx_nic *efx,
 297                                   struct efx_loopback_self_tests *lb_tests,
 298                                   enum efx_loopback_mode mode,
 299                                   unsigned int test_index,
 300                                   struct ethtool_string *strings, u64 *data)
 301 {
 302         struct efx_tx_queue *tx_queue;
 303
 304         efx_for_each_tx_queue(tx_queue, efx) {
 305                 efx_fill_test(test_index++, strings, data,
 306                               &lb_tests->tx_sent[tx_queue->queue],
 307                               EFX_TX_QUEUE_NAME(tx_queue),
 308                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 309                 efx_fill_test(test_index++, strings, data,
 310                               &lb_tests->tx_done[tx_queue->queue],
 311                               EFX_TX_QUEUE_NAME(tx_queue),
 312                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 313         }
 314         efx_fill_test(test_index++, strings, data,
 315                       &lb_tests->rx_good,
 316                       "rx", 0,
 317                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 318         efx_fill_test(test_index++, strings, data,
 319                       &lb_tests->rx_bad,
 320                       "rx", 0,
 321                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 322
 323         return test_index;
 324 }
 325
 326 /**
 327  * efx_ethtool_fill_self_tests - get self-test details
 328  * @efx:                Efx NIC
 329  * @tests:              Efx self-test results structure, or %NULL
 330  * @strings:            Ethtool strings, or %NULL
 331  * @data:               Ethtool test results, or %NULL
 332  */
 333 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 334                                        struct efx_self_tests *tests,
 335                                        struct ethtool_string *strings,
 336                                        u64 *data)
 337 {
 338         struct efx_channel *channel;
 339         unsigned int n = 0, i;
 340         enum efx_loopback_mode mode;
 341
 342         efx_fill_test(n++, strings, data, &tests->mdio,
 343                       "core", 0, "mdio", NULL);
 344         efx_fill_test(n++, strings, data, &tests->nvram,
 345                       "core", 0, "nvram", NULL);
 346         efx_fill_test(n++, strings, data, &tests->interrupt,
 347                       "core", 0, "interrupt", NULL);
 348
 349         /* Event queues */
 350         efx_for_each_channel(channel, efx) {
 351                 efx_fill_test(n++, strings, data,
 352                               &tests->eventq_dma[channel->channel],
 353                               EFX_CHANNEL_NAME(channel),
 354                               "eventq.dma", NULL);
 355                 efx_fill_test(n++, strings, data,
 356                               &tests->eventq_int[channel->channel],
 357                               EFX_CHANNEL_NAME(channel),
 358                               "eventq.int", NULL);
 359                 efx_fill_test(n++, strings, data,
 360                               &tests->eventq_poll[channel->channel],
 361                               EFX_CHANNEL_NAME(channel),
 362                               "eventq.poll", NULL);
 363         }
 364
 365         efx_fill_test(n++, strings, data, &tests->registers,
 366                       "core", 0, "registers", NULL);
 367
 368         if (efx->phy_op->run_tests != NULL) {
 369                 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
 370
 371                 for (i = 0; true; ++i) {
 372                         const char *name;
 373
 374                         EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
 375                         name = efx->phy_op->test_name(efx, i);
 376                         if (name == NULL)
 377                                 break;
 378
 379                         efx_fill_test(n++, strings, data, &tests->phy[i],
 380                                       "phy", 0, name, NULL);
 381                 }
 382         }
 383
 384         /* Loopback tests */
 385         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 386                 if (!(efx->loopback_modes & (1 << mode)))
 387                         continue;
 388                 n = efx_fill_loopback_test(efx,
 389                                            &tests->loopback[mode], mode, n,
 390                                            strings, data);
 391         }
 392
 393         return n;
 394 }
 395
 396 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 397                                       int string_set)
 398 {
 399         switch (string_set) {
 400         case ETH_SS_STATS:
 401                 return EFX_ETHTOOL_NUM_STATS;
 402         case ETH_SS_TEST:
 403                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 404                                                    NULL, NULL, NULL);
 405         default:
 406                 return -EINVAL;
 407         }
 408 }
 409
 410 static void efx_ethtool_get_strings(struct net_device *net_dev,
 411                                     u32 string_set, u8 *strings)
 412 {
 413         struct efx_nic *efx = netdev_priv(net_dev);
 414         struct ethtool_string *ethtool_strings =
 415                 (struct ethtool_string *)strings;
 416         int i;
 417
 418         switch (string_set) {
 419         case ETH_SS_STATS:
 420                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 421                         strncpy(ethtool_strings[i].name,
 422                                 efx_ethtool_stats[i].name,
 423                                 sizeof(ethtool_strings[i].name));
 424                 break;
 425         case ETH_SS_TEST:
 426                 efx_ethtool_fill_self_tests(efx, NULL,
 427                                             ethtool_strings, NULL);
 428                 break;
 429         default:
 430                 /* No other string sets */
 431                 break;
 432         }
 433 }
 434
 435 static void efx_ethtool_get_stats(struct net_device *net_dev,
 436                                   struct ethtool_stats *stats,
 437                                   u64 *data)
 438 {
 439         struct efx_nic *efx = netdev_priv(net_dev);
 440         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 441         struct efx_ethtool_stat *stat;
 442         struct efx_channel *channel;
 443         int i;
 444
 445         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 446
 447         /* Update MAC and NIC statistics */
 448         dev_get_stats(net_dev);
 449
 450         /* Fill detailed statistics buffer */
 451         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 452                 stat = &efx_ethtool_stats[i];
 453                 switch (stat->source) {
 454                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 455                         data[i] = stat->get_stat((void *)mac_stats +
 456                                                  stat->offset);
 457                         break;
 458                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 459                         data[i] = stat->get_stat((void *)efx + stat->offset);
 460                         break;
 461                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 462                         data[i] = 0;
 463                         efx_for_each_channel(channel, efx)
 464                                 data[i] += stat->get_stat((void *)channel +
 465                                                           stat->offset);
 466                         break;
 467                 }
 468         }
 469 }
 470
 471 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 472 {
 473         struct efx_nic *efx = netdev_priv(net_dev);
 474
 475         /* No way to stop the hardware doing the checks; we just
 476          * ignore the result.
 477          */
 478         efx->rx_checksum_enabled = !!enable;
 479
 480         return 0;
 481 }
 482
 483 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 484 {
 485         struct efx_nic *efx = netdev_priv(net_dev);
 486
 487         return efx->rx_checksum_enabled;
 488 }
 489
 490 static void efx_ethtool_self_test(struct net_device *net_dev,
 491                                   struct ethtool_test *test, u64 *data)
 492 {
 493         struct efx_nic *efx = netdev_priv(net_dev);
 494         struct efx_self_tests efx_tests;
 495         int already_up;
 496         int rc;
 497
 498         ASSERT_RTNL();
 499         if (efx->state != STATE_RUNNING) {
 500                 rc = -EIO;
 501                 goto fail1;
 502         }
 503
 504         /* We need rx buffers and interrupts. */
 505         already_up = (efx->net_dev->flags & IFF_UP);
 506         if (!already_up) {
 507                 rc = dev_open(efx->net_dev);
 508                 if (rc) {
 509                         EFX_ERR(efx, "failed opening device.\n");
 510                         goto fail2;
 511                 }
 512         }
 513
 514         memset(&efx_tests, 0, sizeof(efx_tests));
 515
 516         rc = efx_selftest(efx, &efx_tests, test->flags);
 517
 518         if (!already_up)
 519                 dev_close(efx->net_dev);
 520
 521         EFX_LOG(efx, "%s %sline self-tests\n",
 522                 rc == 0 ? "passed" : "failed",
 523                 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 524
 525  fail2:
 526  fail1:
 527         /* Fill ethtool results structures */
 528         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 529         if (rc)
 530                 test->flags |= ETH_TEST_FL_FAILED;
 531 }
 532
 533 /* Restart autonegotiation */
 534 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 535 {
 536         struct efx_nic *efx = netdev_priv(net_dev);
 537
 538         return mdio45_nway_restart(&efx->mdio);
 539 }
 540
 541 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 542 {
 543         struct efx_nic *efx = netdev_priv(net_dev);
 544
 545         return efx->link_state.up;
 546 }
 547
 548 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 549 {
 550         struct efx_nic *efx = netdev_priv(net_dev);
 551         struct efx_spi_device *spi = efx->spi_eeprom;
 552
 553         if (!spi)
 554                 return 0;
 555         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 556                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 557 }
 558
 559 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 560                                   struct ethtool_eeprom *eeprom, u8 *buf)
 561 {
 562         struct efx_nic *efx = netdev_priv(net_dev);
 563         struct efx_spi_device *spi = efx->spi_eeprom;
 564         size_t len;
 565         int rc;
 566
 567         rc = mutex_lock_interruptible(&efx->spi_lock);
 568         if (rc)
 569                 return rc;
 570         rc = falcon_spi_read(efx, spi,
 571                              eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 572                              eeprom->len, &len, buf);
 573         mutex_unlock(&efx->spi_lock);
 574
 575         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 576         eeprom->len = len;
 577         return rc;
 578 }
 579
 580 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 581                                   struct ethtool_eeprom *eeprom, u8 *buf)
 582 {
 583         struct efx_nic *efx = netdev_priv(net_dev);
 584         struct efx_spi_device *spi = efx->spi_eeprom;
 585         size_t len;
 586         int rc;
 587
 588         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 589                 return -EINVAL;
 590
 591         rc = mutex_lock_interruptible(&efx->spi_lock);
 592         if (rc)
 593                 return rc;
 594         rc = falcon_spi_write(efx, spi,
 595                               eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 596                               eeprom->len, &len, buf);
 597         mutex_unlock(&efx->spi_lock);
 598
 599         eeprom->len = len;
 600         return rc;
 601 }
 602
 603 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 604                                     struct ethtool_coalesce *coalesce)
 605 {
 606         struct efx_nic *efx = netdev_priv(net_dev);
 607         struct efx_tx_queue *tx_queue;
 608         struct efx_channel *channel;
 609
 610         memset(coalesce, 0, sizeof(*coalesce));
 611
 612         /* Find lowest IRQ moderation across all used TX queues */
 613         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 614         efx_for_each_tx_queue(tx_queue, efx) {
 615                 channel = tx_queue->channel;
 616                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 617                         if (channel->used_flags != EFX_USED_BY_RX_TX)
 618                                 coalesce->tx_coalesce_usecs_irq =
 619                                         channel->irq_moderation;
 620                         else
 621                                 coalesce->tx_coalesce_usecs_irq = 0;
 622                 }
 623         }
 624
 625         coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
 626         coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
 627
 628         coalesce->tx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 629         coalesce->rx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 630
 631         return 0;
 632 }
 633
 634 /* Set coalescing parameters
 635  * The difficulties occur for shared channels
 636  */
 637 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 638                                     struct ethtool_coalesce *coalesce)
 639 {
 640         struct efx_nic *efx = netdev_priv(net_dev);
 641         struct efx_channel *channel;
 642         struct efx_tx_queue *tx_queue;
 643         unsigned tx_usecs, rx_usecs, adaptive;
 644
 645         if (coalesce->use_adaptive_tx_coalesce)
 646                 return -EOPNOTSUPP;
 647
 648         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 649                 EFX_ERR(efx, "invalid coalescing setting. "
 650                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 651                 return -EOPNOTSUPP;
 652         }
 653
 654         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 655         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 656         adaptive = coalesce->use_adaptive_rx_coalesce;
 657
 658         /* If the channel is shared only allow RX parameters to be set */
 659         efx_for_each_tx_queue(tx_queue, efx) {
 660                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 661                     tx_usecs) {
 662                         EFX_ERR(efx, "Channel is shared. "
 663                                 "Only RX coalescing may be set\n");
 664                         return -EOPNOTSUPP;
 665                 }
 666         }
 667
 668         efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
 669         efx_for_each_channel(channel, efx)
 670                 efx->type->push_irq_moderation(channel);
 671
 672         return 0;
 673 }
 674
 675 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 676                                       struct ethtool_pauseparam *pause)
 677 {
 678         struct efx_nic *efx = netdev_priv(net_dev);
 679         enum efx_fc_type wanted_fc, old_fc;
 680         u32 old_adv;
 681         bool reset;
 682         int rc = 0;
 683
 684         mutex_lock(&efx->mac_lock);
 685
 686         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 687                      (pause->tx_pause ? EFX_FC_TX : 0) |
 688                      (pause->autoneg ? EFX_FC_AUTO : 0));
 689
 690         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 691                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
 692                 rc = -EINVAL;
 693                 goto out;
 694         }
 695
 696         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
 697                 EFX_LOG(efx, "Autonegotiation is disabled\n");
 698                 rc = -EINVAL;
 699                 goto out;
 700         }
 701
 702         /* TX flow control may automatically turn itself off if the
 703          * link partner (intermittently) stops responding to pause
 704          * frames. There isn't any indication that this has happened,
 705          * so the best we do is leave it up to the user to spot this
 706          * and fix it be cycling transmit flow control on this end. */
 707         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 708         if (EFX_WORKAROUND_11482(efx) && reset) {
 709                 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
 710                         /* Recover by resetting the EM block */
 711                         falcon_stop_nic_stats(efx);
 712                         falcon_drain_tx_fifo(efx);
 713                         efx->mac_op->reconfigure(efx);
 714                         falcon_start_nic_stats(efx);
 715                 } else {
 716                         /* Schedule a reset to recover */
 717                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 718                 }
 719         }
 720
 721         old_adv = efx->link_advertising;
 722         old_fc = efx->wanted_fc;
 723         efx_link_set_wanted_fc(efx, wanted_fc);
 724         if (efx->link_advertising != old_adv ||
 725             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
 726                 rc = efx->phy_op->reconfigure(efx);
 727                 if (rc) {
 728                         EFX_ERR(efx, "Unable to advertise requested flow "
 729                                 "control setting\n");
 730                         goto out;
 731                 }
 732         }
 733
 734         /* Reconfigure the MAC. The PHY *may* generate a link state change event
 735          * if the user just changed the advertised capabilities, but there's no
 736          * harm doing this twice */
 737         efx->mac_op->reconfigure(efx);
 738
 739 out:
 740         mutex_unlock(&efx->mac_lock);
 741
 742         return rc;
 743 }
 744
 745 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 746                                        struct ethtool_pauseparam *pause)
 747 {
 748         struct efx_nic *efx = netdev_priv(net_dev);
 749
 750         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 751         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 752         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 753 }
 754
 755
 756 static void efx_ethtool_get_wol(struct net_device *net_dev,
 757                                 struct ethtool_wolinfo *wol)
 758 {
 759         struct efx_nic *efx = netdev_priv(net_dev);
 760         return efx->type->get_wol(efx, wol);
 761 }
 762
 763
 764 static int efx_ethtool_set_wol(struct net_device *net_dev,
 765                                struct ethtool_wolinfo *wol)
 766 {
 767         struct efx_nic *efx = netdev_priv(net_dev);
 768         return efx->type->set_wol(efx, wol->wolopts);
 769 }
 770
 771 extern int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 772 {
 773         struct efx_nic *efx = netdev_priv(net_dev);
 774         enum reset_type method;
 775         enum {
 776                 ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
 777                                            ETH_RESET_OFFLOAD | ETH_RESET_MAC)
 778         };
 779
 780         /* Check for minimal reset flags */
 781         if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
 782                 return -EINVAL;
 783         *flags ^= ETH_RESET_EFX_INVISIBLE;
 784         method = RESET_TYPE_INVISIBLE;
 785
 786         if (*flags & ETH_RESET_PHY) {
 787                 *flags ^= ETH_RESET_PHY;
 788                 method = RESET_TYPE_ALL;
 789         }
 790
 791         if ((*flags & efx->type->reset_world_flags) ==
 792             efx->type->reset_world_flags) {
 793                 *flags ^= efx->type->reset_world_flags;
 794                 method = RESET_TYPE_WORLD;
 795         }
 796
 797         return efx_reset(efx, method);
 798 }
 799
 800 const struct ethtool_ops efx_ethtool_ops = {
 801         .get_settings           = efx_ethtool_get_settings,
 802         .set_settings           = efx_ethtool_set_settings,
 803         .get_drvinfo            = efx_ethtool_get_drvinfo,
 804         .nway_reset             = efx_ethtool_nway_reset,
 805         .get_link               = efx_ethtool_get_link,
 806         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 807         .get_eeprom             = efx_ethtool_get_eeprom,
 808         .set_eeprom             = efx_ethtool_set_eeprom,
 809         .get_coalesce           = efx_ethtool_get_coalesce,
 810         .set_coalesce           = efx_ethtool_set_coalesce,
 811         .get_pauseparam         = efx_ethtool_get_pauseparam,
 812         .set_pauseparam         = efx_ethtool_set_pauseparam,
 813         .get_rx_csum            = efx_ethtool_get_rx_csum,
 814         .set_rx_csum            = efx_ethtool_set_rx_csum,
 815         .get_tx_csum            = ethtool_op_get_tx_csum,
 816         .set_tx_csum            = ethtool_op_set_tx_csum,
 817         .get_sg                 = ethtool_op_get_sg,
 818         .set_sg                 = ethtool_op_set_sg,
 819         .get_tso                = ethtool_op_get_tso,
 820         .set_tso                = ethtool_op_set_tso,
 821         .get_flags              = ethtool_op_get_flags,
 822         .set_flags              = ethtool_op_set_flags,
 823         .get_sset_count         = efx_ethtool_get_sset_count,
 824         .self_test              = efx_ethtool_self_test,
 825         .get_strings            = efx_ethtool_get_strings,
 826         .phys_id                = efx_ethtool_phys_id,
 827         .get_ethtool_stats      = efx_ethtool_get_stats,
 828         .get_wol                = efx_ethtool_get_wol,
 829         .set_wol                = efx_ethtool_set_wol,
 830         .reset                  = efx_ethtool_reset,
 831 };