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         /* 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         /* 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 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
 246 {
 247         return efx_nic_get_regs_len(netdev_priv(net_dev));
 248 }
 249
 250 static void efx_ethtool_get_regs(struct net_device *net_dev,
 251                                  struct ethtool_regs *regs, void *buf)
 252 {
 253         struct efx_nic *efx = netdev_priv(net_dev);
 254
 255         regs->version = efx->type->revision;
 256         efx_nic_get_regs(efx, buf);
 257 }
 258
 259 /**
 260  * efx_fill_test - fill in an individual self-test entry
 261  * @test_index:         Index of the test
 262  * @strings:            Ethtool strings, or %NULL
 263  * @data:               Ethtool test results, or %NULL
 264  * @test:               Pointer to test result (used only if data != %NULL)
 265  * @unit_format:        Unit name format (e.g. "chan\%d")
 266  * @unit_id:            Unit id (e.g. 0 for "chan0")
 267  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 268  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 269  *
 270  * Fill in an individual self-test entry.
 271  */
 272 static void efx_fill_test(unsigned int test_index,
 273                           struct ethtool_string *strings, u64 *data,
 274                           int *test, const char *unit_format, int unit_id,
 275                           const char *test_format, const char *test_id)
 276 {
 277         struct ethtool_string unit_str, test_str;
 278
 279         /* Fill data value, if applicable */
 280         if (data)
 281                 data[test_index] = *test;
 282
 283         /* Fill string, if applicable */
 284         if (strings) {
 285                 if (strchr(unit_format, '%'))
 286                         snprintf(unit_str.name, sizeof(unit_str.name),
 287                                  unit_format, unit_id);
 288                 else
 289                         strcpy(unit_str.name, unit_format);
 290                 snprintf(test_str.name, sizeof(test_str.name),
 291                          test_format, test_id);
 292                 snprintf(strings[test_index].name,
 293                          sizeof(strings[test_index].name),
 294                          "%-6s %-24s", unit_str.name, test_str.name);
 295         }
 296 }
 297
 298 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 299 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 300 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 301 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 302         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 303
 304 /**
 305  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 306  * @efx:                Efx NIC
 307  * @lb_tests:           Efx loopback self-test results structure
 308  * @mode:               Loopback test mode
 309  * @test_index:         Starting index of the test
 310  * @strings:            Ethtool strings, or %NULL
 311  * @data:               Ethtool test results, or %NULL
 312  */
 313 static int efx_fill_loopback_test(struct efx_nic *efx,
 314                                   struct efx_loopback_self_tests *lb_tests,
 315                                   enum efx_loopback_mode mode,
 316                                   unsigned int test_index,
 317                                   struct ethtool_string *strings, u64 *data)
 318 {
 319         struct efx_tx_queue *tx_queue;
 320
 321         efx_for_each_channel_tx_queue(tx_queue, &efx->channel[0]) {
 322                 efx_fill_test(test_index++, strings, data,
 323                               &lb_tests->tx_sent[tx_queue->queue],
 324                               EFX_TX_QUEUE_NAME(tx_queue),
 325                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 326                 efx_fill_test(test_index++, strings, data,
 327                               &lb_tests->tx_done[tx_queue->queue],
 328                               EFX_TX_QUEUE_NAME(tx_queue),
 329                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 330         }
 331         efx_fill_test(test_index++, strings, data,
 332                       &lb_tests->rx_good,
 333                       "rx", 0,
 334                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 335         efx_fill_test(test_index++, strings, data,
 336                       &lb_tests->rx_bad,
 337                       "rx", 0,
 338                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 339
 340         return test_index;
 341 }
 342
 343 /**
 344  * efx_ethtool_fill_self_tests - get self-test details
 345  * @efx:                Efx NIC
 346  * @tests:              Efx self-test results structure, or %NULL
 347  * @strings:            Ethtool strings, or %NULL
 348  * @data:               Ethtool test results, or %NULL
 349  */
 350 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 351                                        struct efx_self_tests *tests,
 352                                        struct ethtool_string *strings,
 353                                        u64 *data)
 354 {
 355         struct efx_channel *channel;
 356         unsigned int n = 0, i;
 357         enum efx_loopback_mode mode;
 358
 359         efx_fill_test(n++, strings, data, &tests->phy_alive,
 360                       "phy", 0, "alive", NULL);
 361         efx_fill_test(n++, strings, data, &tests->nvram,
 362                       "core", 0, "nvram", NULL);
 363         efx_fill_test(n++, strings, data, &tests->interrupt,
 364                       "core", 0, "interrupt", NULL);
 365
 366         /* Event queues */
 367         efx_for_each_channel(channel, efx) {
 368                 efx_fill_test(n++, strings, data,
 369                               &tests->eventq_dma[channel->channel],
 370                               EFX_CHANNEL_NAME(channel),
 371                               "eventq.dma", NULL);
 372                 efx_fill_test(n++, strings, data,
 373                               &tests->eventq_int[channel->channel],
 374                               EFX_CHANNEL_NAME(channel),
 375                               "eventq.int", NULL);
 376                 efx_fill_test(n++, strings, data,
 377                               &tests->eventq_poll[channel->channel],
 378                               EFX_CHANNEL_NAME(channel),
 379                               "eventq.poll", NULL);
 380         }
 381
 382         efx_fill_test(n++, strings, data, &tests->registers,
 383                       "core", 0, "registers", NULL);
 384
 385         if (efx->phy_op->run_tests != NULL) {
 386                 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
 387
 388                 for (i = 0; true; ++i) {
 389                         const char *name;
 390
 391                         EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
 392                         name = efx->phy_op->test_name(efx, i);
 393                         if (name == NULL)
 394                                 break;
 395
 396                         efx_fill_test(n++, strings, data, &tests->phy_ext[i],
 397                                       "phy", 0, name, NULL);
 398                 }
 399         }
 400
 401         /* Loopback tests */
 402         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 403                 if (!(efx->loopback_modes & (1 << mode)))
 404                         continue;
 405                 n = efx_fill_loopback_test(efx,
 406                                            &tests->loopback[mode], mode, n,
 407                                            strings, data);
 408         }
 409
 410         return n;
 411 }
 412
 413 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 414                                       int string_set)
 415 {
 416         switch (string_set) {
 417         case ETH_SS_STATS:
 418                 return EFX_ETHTOOL_NUM_STATS;
 419         case ETH_SS_TEST:
 420                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 421                                                    NULL, NULL, NULL);
 422         default:
 423                 return -EINVAL;
 424         }
 425 }
 426
 427 static void efx_ethtool_get_strings(struct net_device *net_dev,
 428                                     u32 string_set, u8 *strings)
 429 {
 430         struct efx_nic *efx = netdev_priv(net_dev);
 431         struct ethtool_string *ethtool_strings =
 432                 (struct ethtool_string *)strings;
 433         int i;
 434
 435         switch (string_set) {
 436         case ETH_SS_STATS:
 437                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 438                         strncpy(ethtool_strings[i].name,
 439                                 efx_ethtool_stats[i].name,
 440                                 sizeof(ethtool_strings[i].name));
 441                 break;
 442         case ETH_SS_TEST:
 443                 efx_ethtool_fill_self_tests(efx, NULL,
 444                                             ethtool_strings, NULL);
 445                 break;
 446         default:
 447                 /* No other string sets */
 448                 break;
 449         }
 450 }
 451
 452 static void efx_ethtool_get_stats(struct net_device *net_dev,
 453                                   struct ethtool_stats *stats,
 454                                   u64 *data)
 455 {
 456         struct efx_nic *efx = netdev_priv(net_dev);
 457         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 458         struct efx_ethtool_stat *stat;
 459         struct efx_channel *channel;
 460         int i;
 461
 462         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 463
 464         /* Update MAC and NIC statistics */
 465         dev_get_stats(net_dev);
 466
 467         /* Fill detailed statistics buffer */
 468         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 469                 stat = &efx_ethtool_stats[i];
 470                 switch (stat->source) {
 471                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 472                         data[i] = stat->get_stat((void *)mac_stats +
 473                                                  stat->offset);
 474                         break;
 475                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 476                         data[i] = stat->get_stat((void *)efx + stat->offset);
 477                         break;
 478                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 479                         data[i] = 0;
 480                         efx_for_each_channel(channel, efx)
 481                                 data[i] += stat->get_stat((void *)channel +
 482                                                           stat->offset);
 483                         break;
 484                 }
 485         }
 486 }
 487
 488 static int efx_ethtool_set_tso(struct net_device *net_dev, u32 enable)
 489 {
 490         struct efx_nic *efx __attribute__ ((unused)) = netdev_priv(net_dev);
 491         unsigned long features;
 492
 493         features = NETIF_F_TSO;
 494         if (efx->type->offload_features & NETIF_F_V6_CSUM)
 495                 features |= NETIF_F_TSO6;
 496
 497         if (enable)
 498                 net_dev->features |= features;
 499         else
 500                 net_dev->features &= ~features;
 501
 502         return 0;
 503 }
 504
 505 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable)
 506 {
 507         struct efx_nic *efx = netdev_priv(net_dev);
 508         unsigned long features = efx->type->offload_features & NETIF_F_ALL_CSUM;
 509
 510         if (enable)
 511                 net_dev->features |= features;
 512         else
 513                 net_dev->features &= ~features;
 514
 515         return 0;
 516 }
 517
 518 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 519 {
 520         struct efx_nic *efx = netdev_priv(net_dev);
 521
 522         /* No way to stop the hardware doing the checks; we just
 523          * ignore the result.
 524          */
 525         efx->rx_checksum_enabled = !!enable;
 526
 527         return 0;
 528 }
 529
 530 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 531 {
 532         struct efx_nic *efx = netdev_priv(net_dev);
 533
 534         return efx->rx_checksum_enabled;
 535 }
 536
 537 static void efx_ethtool_self_test(struct net_device *net_dev,
 538                                   struct ethtool_test *test, u64 *data)
 539 {
 540         struct efx_nic *efx = netdev_priv(net_dev);
 541         struct efx_self_tests efx_tests;
 542         int already_up;
 543         int rc;
 544
 545         ASSERT_RTNL();
 546         if (efx->state != STATE_RUNNING) {
 547                 rc = -EIO;
 548                 goto fail1;
 549         }
 550
 551         /* We need rx buffers and interrupts. */
 552         already_up = (efx->net_dev->flags & IFF_UP);
 553         if (!already_up) {
 554                 rc = dev_open(efx->net_dev);
 555                 if (rc) {
 556                         EFX_ERR(efx, "failed opening device.\n");
 557                         goto fail2;
 558                 }
 559         }
 560
 561         memset(&efx_tests, 0, sizeof(efx_tests));
 562
 563         rc = efx_selftest(efx, &efx_tests, test->flags);
 564
 565         if (!already_up)
 566                 dev_close(efx->net_dev);
 567
 568         EFX_LOG(efx, "%s %sline self-tests\n",
 569                 rc == 0 ? "passed" : "failed",
 570                 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 571
 572  fail2:
 573  fail1:
 574         /* Fill ethtool results structures */
 575         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 576         if (rc)
 577                 test->flags |= ETH_TEST_FL_FAILED;
 578 }
 579
 580 /* Restart autonegotiation */
 581 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 582 {
 583         struct efx_nic *efx = netdev_priv(net_dev);
 584
 585         return mdio45_nway_restart(&efx->mdio);
 586 }
 587
 588 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 589 {
 590         struct efx_nic *efx = netdev_priv(net_dev);
 591
 592         return efx->link_state.up;
 593 }
 594
 595 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 596 {
 597         struct efx_nic *efx = netdev_priv(net_dev);
 598         struct efx_spi_device *spi = efx->spi_eeprom;
 599
 600         if (!spi)
 601                 return 0;
 602         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 603                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 604 }
 605
 606 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 607                                   struct ethtool_eeprom *eeprom, u8 *buf)
 608 {
 609         struct efx_nic *efx = netdev_priv(net_dev);
 610         struct efx_spi_device *spi = efx->spi_eeprom;
 611         size_t len;
 612         int rc;
 613
 614         rc = mutex_lock_interruptible(&efx->spi_lock);
 615         if (rc)
 616                 return rc;
 617         rc = falcon_spi_read(efx, spi,
 618                              eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 619                              eeprom->len, &len, buf);
 620         mutex_unlock(&efx->spi_lock);
 621
 622         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 623         eeprom->len = len;
 624         return rc;
 625 }
 626
 627 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 628                                   struct ethtool_eeprom *eeprom, u8 *buf)
 629 {
 630         struct efx_nic *efx = netdev_priv(net_dev);
 631         struct efx_spi_device *spi = efx->spi_eeprom;
 632         size_t len;
 633         int rc;
 634
 635         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 636                 return -EINVAL;
 637
 638         rc = mutex_lock_interruptible(&efx->spi_lock);
 639         if (rc)
 640                 return rc;
 641         rc = falcon_spi_write(efx, spi,
 642                               eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 643                               eeprom->len, &len, buf);
 644         mutex_unlock(&efx->spi_lock);
 645
 646         eeprom->len = len;
 647         return rc;
 648 }
 649
 650 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 651                                     struct ethtool_coalesce *coalesce)
 652 {
 653         struct efx_nic *efx = netdev_priv(net_dev);
 654         struct efx_tx_queue *tx_queue;
 655         struct efx_channel *channel;
 656
 657         memset(coalesce, 0, sizeof(*coalesce));
 658
 659         /* Find lowest IRQ moderation across all used TX queues */
 660         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 661         efx_for_each_tx_queue(tx_queue, efx) {
 662                 channel = tx_queue->channel;
 663                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 664                         if (channel->channel < efx->n_rx_channels)
 665                                 coalesce->tx_coalesce_usecs_irq =
 666                                         channel->irq_moderation;
 667                         else
 668                                 coalesce->tx_coalesce_usecs_irq = 0;
 669                 }
 670         }
 671
 672         coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
 673         coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
 674
 675         coalesce->tx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 676         coalesce->rx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 677
 678         return 0;
 679 }
 680
 681 /* Set coalescing parameters
 682  * The difficulties occur for shared channels
 683  */
 684 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 685                                     struct ethtool_coalesce *coalesce)
 686 {
 687         struct efx_nic *efx = netdev_priv(net_dev);
 688         struct efx_channel *channel;
 689         struct efx_tx_queue *tx_queue;
 690         unsigned tx_usecs, rx_usecs, adaptive;
 691
 692         if (coalesce->use_adaptive_tx_coalesce)
 693                 return -EOPNOTSUPP;
 694
 695         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 696                 EFX_ERR(efx, "invalid coalescing setting. "
 697                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 698                 return -EOPNOTSUPP;
 699         }
 700
 701         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 702         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 703         adaptive = coalesce->use_adaptive_rx_coalesce;
 704
 705         /* If the channel is shared only allow RX parameters to be set */
 706         efx_for_each_tx_queue(tx_queue, efx) {
 707                 if ((tx_queue->channel->channel < efx->n_rx_channels) &&
 708                     tx_usecs) {
 709                         EFX_ERR(efx, "Channel is shared. "
 710                                 "Only RX coalescing may be set\n");
 711                         return -EOPNOTSUPP;
 712                 }
 713         }
 714
 715         efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
 716         efx_for_each_channel(channel, efx)
 717                 efx->type->push_irq_moderation(channel);
 718
 719         return 0;
 720 }
 721
 722 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 723                                       struct ethtool_pauseparam *pause)
 724 {
 725         struct efx_nic *efx = netdev_priv(net_dev);
 726         enum efx_fc_type wanted_fc, old_fc;
 727         u32 old_adv;
 728         bool reset;
 729         int rc = 0;
 730
 731         mutex_lock(&efx->mac_lock);
 732
 733         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 734                      (pause->tx_pause ? EFX_FC_TX : 0) |
 735                      (pause->autoneg ? EFX_FC_AUTO : 0));
 736
 737         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 738                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
 739                 rc = -EINVAL;
 740                 goto out;
 741         }
 742
 743         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
 744                 EFX_LOG(efx, "Autonegotiation is disabled\n");
 745                 rc = -EINVAL;
 746                 goto out;
 747         }
 748
 749         /* TX flow control may automatically turn itself off if the
 750          * link partner (intermittently) stops responding to pause
 751          * frames. There isn't any indication that this has happened,
 752          * so the best we do is leave it up to the user to spot this
 753          * and fix it be cycling transmit flow control on this end. */
 754         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 755         if (EFX_WORKAROUND_11482(efx) && reset) {
 756                 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
 757                         /* Recover by resetting the EM block */
 758                         falcon_stop_nic_stats(efx);
 759                         falcon_drain_tx_fifo(efx);
 760                         efx->mac_op->reconfigure(efx);
 761                         falcon_start_nic_stats(efx);
 762                 } else {
 763                         /* Schedule a reset to recover */
 764                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 765                 }
 766         }
 767
 768         old_adv = efx->link_advertising;
 769         old_fc = efx->wanted_fc;
 770         efx_link_set_wanted_fc(efx, wanted_fc);
 771         if (efx->link_advertising != old_adv ||
 772             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
 773                 rc = efx->phy_op->reconfigure(efx);
 774                 if (rc) {
 775                         EFX_ERR(efx, "Unable to advertise requested flow "
 776                                 "control setting\n");
 777                         goto out;
 778                 }
 779         }
 780
 781         /* Reconfigure the MAC. The PHY *may* generate a link state change event
 782          * if the user just changed the advertised capabilities, but there's no
 783          * harm doing this twice */
 784         efx->mac_op->reconfigure(efx);
 785
 786 out:
 787         mutex_unlock(&efx->mac_lock);
 788
 789         return rc;
 790 }
 791
 792 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 793                                        struct ethtool_pauseparam *pause)
 794 {
 795         struct efx_nic *efx = netdev_priv(net_dev);
 796
 797         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 798         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 799         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 800 }
 801
 802
 803 static void efx_ethtool_get_wol(struct net_device *net_dev,
 804                                 struct ethtool_wolinfo *wol)
 805 {
 806         struct efx_nic *efx = netdev_priv(net_dev);
 807         return efx->type->get_wol(efx, wol);
 808 }
 809
 810
 811 static int efx_ethtool_set_wol(struct net_device *net_dev,
 812                                struct ethtool_wolinfo *wol)
 813 {
 814         struct efx_nic *efx = netdev_priv(net_dev);
 815         return efx->type->set_wol(efx, wol->wolopts);
 816 }
 817
 818 extern int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 819 {
 820         struct efx_nic *efx = netdev_priv(net_dev);
 821         enum reset_type method;
 822         enum {
 823                 ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
 824                                            ETH_RESET_OFFLOAD | ETH_RESET_MAC)
 825         };
 826
 827         /* Check for minimal reset flags */
 828         if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
 829                 return -EINVAL;
 830         *flags ^= ETH_RESET_EFX_INVISIBLE;
 831         method = RESET_TYPE_INVISIBLE;
 832
 833         if (*flags & ETH_RESET_PHY) {
 834                 *flags ^= ETH_RESET_PHY;
 835                 method = RESET_TYPE_ALL;
 836         }
 837
 838         if ((*flags & efx->type->reset_world_flags) ==
 839             efx->type->reset_world_flags) {
 840                 *flags ^= efx->type->reset_world_flags;
 841                 method = RESET_TYPE_WORLD;
 842         }
 843
 844         return efx_reset(efx, method);
 845 }
 846
 847 const struct ethtool_ops efx_ethtool_ops = {
 848         .get_settings           = efx_ethtool_get_settings,
 849         .set_settings           = efx_ethtool_set_settings,
 850         .get_drvinfo            = efx_ethtool_get_drvinfo,
 851         .get_regs_len           = efx_ethtool_get_regs_len,
 852         .get_regs               = efx_ethtool_get_regs,
 853         .nway_reset             = efx_ethtool_nway_reset,
 854         .get_link               = efx_ethtool_get_link,
 855         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 856         .get_eeprom             = efx_ethtool_get_eeprom,
 857         .set_eeprom             = efx_ethtool_set_eeprom,
 858         .get_coalesce           = efx_ethtool_get_coalesce,
 859         .set_coalesce           = efx_ethtool_set_coalesce,
 860         .get_pauseparam         = efx_ethtool_get_pauseparam,
 861         .set_pauseparam         = efx_ethtool_set_pauseparam,
 862         .get_rx_csum            = efx_ethtool_get_rx_csum,
 863         .set_rx_csum            = efx_ethtool_set_rx_csum,
 864         .get_tx_csum            = ethtool_op_get_tx_csum,
 865         /* Need to enable/disable IPv6 too */
 866         .set_tx_csum            = efx_ethtool_set_tx_csum,
 867         .get_sg                 = ethtool_op_get_sg,
 868         .set_sg                 = ethtool_op_set_sg,
 869         .get_tso                = ethtool_op_get_tso,
 870         /* Need to enable/disable TSO-IPv6 too */
 871         .set_tso                = efx_ethtool_set_tso,
 872         .get_flags              = ethtool_op_get_flags,
 873         .set_flags              = ethtool_op_set_flags,
 874         .get_sset_count         = efx_ethtool_get_sset_count,
 875         .self_test              = efx_ethtool_self_test,
 876         .get_strings            = efx_ethtool_get_strings,
 877         .phys_id                = efx_ethtool_phys_id,
 878         .get_ethtool_stats      = efx_ethtool_get_stats,
 879         .get_wol                = efx_ethtool_get_wol,
 880         .set_wol                = efx_ethtool_set_wol,
 881         .reset                  = efx_ethtool_reset,
 882 };