git.oblomov.eu Git - linux-2.6/blob - drivers/net/sfc/ethtool.c

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2008 Solarflare Communications Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation, incorporated herein by reference.
   9  */
  10
  11 #include <linux/netdevice.h>
  12 #include <linux/ethtool.h>
  13 #include <linux/rtnetlink.h>
  14 #include "net_driver.h"
  15 #include "selftest.h"
  16 #include "efx.h"
  17 #include "ethtool.h"
  18 #include "falcon.h"
  19 #include "spi.h"
  20
  21 const char *efx_loopback_mode_names[] = {
  22         [LOOPBACK_NONE]         = "NONE",
  23         [LOOPBACK_GMAC]         = "GMAC",
  24         [LOOPBACK_XGMII]        = "XGMII",
  25         [LOOPBACK_XGXS]         = "XGXS",
  26         [LOOPBACK_XAUI]         = "XAUI",
  27         [LOOPBACK_GPHY]         = "GPHY",
  28         [LOOPBACK_PHYXS]        = "PHYXS",
  29         [LOOPBACK_PCS]          = "PCS",
  30         [LOOPBACK_PMAPMD]       = "PMA/PMD",
  31         [LOOPBACK_NETWORK]      = "NETWORK",
  32 };
  33
  34 struct ethtool_string {
  35         char name[ETH_GSTRING_LEN];
  36 };
  37
  38 struct efx_ethtool_stat {
  39         const char *name;
  40         enum {
  41                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  42                 EFX_ETHTOOL_STAT_SOURCE_nic,
  43                 EFX_ETHTOOL_STAT_SOURCE_channel
  44         } source;
  45         unsigned offset;
  46         u64(*get_stat) (void *field); /* Reader function */
  47 };
  48
  49 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  50 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  51                                 get_stat_function) {                    \
  52         .name = #stat_name,                                             \
  53         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  54         .offset = ((((field_type *) 0) ==                               \
  55                       &((struct efx_##source_name *)0)->field) ?        \
  56                     offsetof(struct efx_##source_name, field) :         \
  57                     offsetof(struct efx_##source_name, field)),         \
  58         .get_stat = get_stat_function,                                  \
  59 }
  60
  61 static u64 efx_get_uint_stat(void *field)
  62 {
  63         return *(unsigned int *)field;
  64 }
  65
  66 static u64 efx_get_ulong_stat(void *field)
  67 {
  68         return *(unsigned long *)field;
  69 }
  70
  71 static u64 efx_get_u64_stat(void *field)
  72 {
  73         return *(u64 *) field;
  74 }
  75
  76 static u64 efx_get_atomic_stat(void *field)
  77 {
  78         return atomic_read((atomic_t *) field);
  79 }
  80
  81 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  82         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  83                           unsigned long, efx_get_ulong_stat)
  84
  85 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  86         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  87                           u64, efx_get_u64_stat)
  88
  89 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  90         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  91                          unsigned int, efx_get_uint_stat)
  92
  93 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  94         EFX_ETHTOOL_STAT(field, nic, field,                     \
  95                          atomic_t, efx_get_atomic_stat)
  96
  97 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
  98         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
  99                          unsigned int, efx_get_uint_stat)
 100
 101 static struct efx_ethtool_stat efx_ethtool_stats[] = {
 102         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
 103         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
 104         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
 105         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
 106         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
 107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 120         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 121         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 122         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 124         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 125         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 126         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 127         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 128         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 129         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 130         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 131         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 132         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 133         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 134         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 135         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 151         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 152         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 153         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 154         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 155         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 156         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 157         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 158         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 159         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 160         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 161         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 162         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 163         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 164         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 165         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 166         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 167         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 168 };
 169
 170 /* Number of ethtool statistics */
 171 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 172
 173 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
 174
 175 /**************************************************************************
 176  *
 177  * Ethtool operations
 178  *
 179  **************************************************************************
 180  */
 181
 182 /* Identify device by flashing LEDs */
 183 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
 184 {
 185         struct efx_nic *efx = netdev_priv(net_dev);
 186
 187         efx->board_info.blink(efx, 1);
 188         set_current_state(TASK_INTERRUPTIBLE);
 189         if (count)
 190                 schedule_timeout(count * HZ);
 191         else
 192                 schedule();
 193         efx->board_info.blink(efx, 0);
 194         return 0;
 195 }
 196
 197 /* This must be called with rtnl_lock held. */
 198 int efx_ethtool_get_settings(struct net_device *net_dev,
 199                              struct ethtool_cmd *ecmd)
 200 {
 201         struct efx_nic *efx = netdev_priv(net_dev);
 202
 203         mutex_lock(&efx->mac_lock);
 204         efx->phy_op->get_settings(efx, ecmd);
 205         mutex_unlock(&efx->mac_lock);
 206
 207         /* Falcon GMAC does not support 1000Mbps HD */
 208         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
 209
 210         return 0;
 211 }
 212
 213 /* This must be called with rtnl_lock held. */
 214 int efx_ethtool_set_settings(struct net_device *net_dev,
 215                              struct ethtool_cmd *ecmd)
 216 {
 217         struct efx_nic *efx = netdev_priv(net_dev);
 218         int rc;
 219
 220         /* Falcon GMAC does not support 1000Mbps HD */
 221         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
 222                 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
 223                         " setting\n");
 224                 return -EINVAL;
 225         }
 226
 227         mutex_lock(&efx->mac_lock);
 228         rc = efx->phy_op->set_settings(efx, ecmd);
 229         mutex_unlock(&efx->mac_lock);
 230         if (!rc)
 231                 efx_reconfigure_port(efx);
 232
 233         return rc;
 234 }
 235
 236 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 237                                     struct ethtool_drvinfo *info)
 238 {
 239         struct efx_nic *efx = netdev_priv(net_dev);
 240
 241         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
 242         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 243         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 244 }
 245
 246 /**
 247  * efx_fill_test - fill in an individual self-test entry
 248  * @test_index:         Index of the test
 249  * @strings:            Ethtool strings, or %NULL
 250  * @data:               Ethtool test results, or %NULL
 251  * @test:               Pointer to test result (used only if data != %NULL)
 252  * @unit_format:        Unit name format (e.g. "chan\%d")
 253  * @unit_id:            Unit id (e.g. 0 for "chan0")
 254  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 255  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 256  *
 257  * Fill in an individual self-test entry.
 258  */
 259 static void efx_fill_test(unsigned int test_index,
 260                           struct ethtool_string *strings, u64 *data,
 261                           int *test, const char *unit_format, int unit_id,
 262                           const char *test_format, const char *test_id)
 263 {
 264         struct ethtool_string unit_str, test_str;
 265
 266         /* Fill data value, if applicable */
 267         if (data)
 268                 data[test_index] = *test;
 269
 270         /* Fill string, if applicable */
 271         if (strings) {
 272                 snprintf(unit_str.name, sizeof(unit_str.name),
 273                          unit_format, unit_id);
 274                 snprintf(test_str.name, sizeof(test_str.name),
 275                          test_format, test_id);
 276                 snprintf(strings[test_index].name,
 277                          sizeof(strings[test_index].name),
 278                          "%-6s %-24s", unit_str.name, test_str.name);
 279         }
 280 }
 281
 282 #define EFX_PORT_NAME "port%d", 0
 283 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 284 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 285 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 286 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 287         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
 288
 289 /**
 290  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 291  * @efx:                Efx NIC
 292  * @lb_tests:           Efx loopback self-test results structure
 293  * @mode:               Loopback test mode
 294  * @test_index:         Starting index of the test
 295  * @strings:            Ethtool strings, or %NULL
 296  * @data:               Ethtool test results, or %NULL
 297  */
 298 static int efx_fill_loopback_test(struct efx_nic *efx,
 299                                   struct efx_loopback_self_tests *lb_tests,
 300                                   enum efx_loopback_mode mode,
 301                                   unsigned int test_index,
 302                                   struct ethtool_string *strings, u64 *data)
 303 {
 304         struct efx_tx_queue *tx_queue;
 305
 306         efx_for_each_tx_queue(tx_queue, efx) {
 307                 efx_fill_test(test_index++, strings, data,
 308                               &lb_tests->tx_sent[tx_queue->queue],
 309                               EFX_TX_QUEUE_NAME(tx_queue),
 310                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 311                 efx_fill_test(test_index++, strings, data,
 312                               &lb_tests->tx_done[tx_queue->queue],
 313                               EFX_TX_QUEUE_NAME(tx_queue),
 314                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 315         }
 316         efx_fill_test(test_index++, strings, data,
 317                       &lb_tests->rx_good,
 318                       EFX_PORT_NAME,
 319                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 320         efx_fill_test(test_index++, strings, data,
 321                       &lb_tests->rx_bad,
 322                       EFX_PORT_NAME,
 323                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 324
 325         return test_index;
 326 }
 327
 328 /**
 329  * efx_ethtool_fill_self_tests - get self-test details
 330  * @efx:                Efx NIC
 331  * @tests:              Efx self-test results structure, or %NULL
 332  * @strings:            Ethtool strings, or %NULL
 333  * @data:               Ethtool test results, or %NULL
 334  */
 335 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 336                                        struct efx_self_tests *tests,
 337                                        struct ethtool_string *strings,
 338                                        u64 *data)
 339 {
 340         struct efx_channel *channel;
 341         unsigned int n = 0;
 342         enum efx_loopback_mode mode;
 343
 344         efx_fill_test(n++, strings, data, &tests->mii,
 345                       "core", 0, "mii", NULL);
 346         efx_fill_test(n++, strings, data, &tests->nvram,
 347                       "core", 0, "nvram", NULL);
 348         efx_fill_test(n++, strings, data, &tests->interrupt,
 349                       "core", 0, "interrupt", NULL);
 350
 351         /* Event queues */
 352         efx_for_each_channel(channel, efx) {
 353                 efx_fill_test(n++, strings, data,
 354                               &tests->eventq_dma[channel->channel],
 355                               EFX_CHANNEL_NAME(channel),
 356                               "eventq.dma", NULL);
 357                 efx_fill_test(n++, strings, data,
 358                               &tests->eventq_int[channel->channel],
 359                               EFX_CHANNEL_NAME(channel),
 360                               "eventq.int", NULL);
 361                 efx_fill_test(n++, strings, data,
 362                               &tests->eventq_poll[channel->channel],
 363                               EFX_CHANNEL_NAME(channel),
 364                               "eventq.poll", NULL);
 365         }
 366
 367         efx_fill_test(n++, strings, data, &tests->registers,
 368                       "core", 0, "registers", NULL);
 369         efx_fill_test(n++, strings, data, &tests->phy,
 370                       EFX_PORT_NAME, "phy", NULL);
 371
 372         /* Loopback tests */
 373         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 374                 if (!(efx->loopback_modes & (1 << mode)))
 375                         continue;
 376                 n = efx_fill_loopback_test(efx,
 377                                            &tests->loopback[mode], mode, n,
 378                                            strings, data);
 379         }
 380
 381         return n;
 382 }
 383
 384 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 385                                       int string_set)
 386 {
 387         switch (string_set) {
 388         case ETH_SS_STATS:
 389                 return EFX_ETHTOOL_NUM_STATS;
 390         case ETH_SS_TEST:
 391                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 392                                                    NULL, NULL, NULL);
 393         default:
 394                 return -EINVAL;
 395         }
 396 }
 397
 398 static void efx_ethtool_get_strings(struct net_device *net_dev,
 399                                     u32 string_set, u8 *strings)
 400 {
 401         struct efx_nic *efx = netdev_priv(net_dev);
 402         struct ethtool_string *ethtool_strings =
 403                 (struct ethtool_string *)strings;
 404         int i;
 405
 406         switch (string_set) {
 407         case ETH_SS_STATS:
 408                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 409                         strncpy(ethtool_strings[i].name,
 410                                 efx_ethtool_stats[i].name,
 411                                 sizeof(ethtool_strings[i].name));
 412                 break;
 413         case ETH_SS_TEST:
 414                 efx_ethtool_fill_self_tests(efx, NULL,
 415                                             ethtool_strings, NULL);
 416                 break;
 417         default:
 418                 /* No other string sets */
 419                 break;
 420         }
 421 }
 422
 423 static void efx_ethtool_get_stats(struct net_device *net_dev,
 424                                   struct ethtool_stats *stats,
 425                                   u64 *data)
 426 {
 427         struct efx_nic *efx = netdev_priv(net_dev);
 428         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 429         struct efx_ethtool_stat *stat;
 430         struct efx_channel *channel;
 431         int i;
 432
 433         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 434
 435         /* Update MAC and NIC statistics */
 436         dev_get_stats(net_dev);
 437
 438         /* Fill detailed statistics buffer */
 439         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 440                 stat = &efx_ethtool_stats[i];
 441                 switch (stat->source) {
 442                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 443                         data[i] = stat->get_stat((void *)mac_stats +
 444                                                  stat->offset);
 445                         break;
 446                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 447                         data[i] = stat->get_stat((void *)efx + stat->offset);
 448                         break;
 449                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 450                         data[i] = 0;
 451                         efx_for_each_channel(channel, efx)
 452                                 data[i] += stat->get_stat((void *)channel +
 453                                                           stat->offset);
 454                         break;
 455                 }
 456         }
 457 }
 458
 459 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 460 {
 461         struct efx_nic *efx = netdev_priv(net_dev);
 462
 463         /* No way to stop the hardware doing the checks; we just
 464          * ignore the result.
 465          */
 466         efx->rx_checksum_enabled = !!enable;
 467
 468         return 0;
 469 }
 470
 471 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 472 {
 473         struct efx_nic *efx = netdev_priv(net_dev);
 474
 475         return efx->rx_checksum_enabled;
 476 }
 477
 478 static void efx_ethtool_self_test(struct net_device *net_dev,
 479                                   struct ethtool_test *test, u64 *data)
 480 {
 481         struct efx_nic *efx = netdev_priv(net_dev);
 482         struct efx_self_tests efx_tests;
 483         int offline, already_up;
 484         int rc;
 485
 486         ASSERT_RTNL();
 487         if (efx->state != STATE_RUNNING) {
 488                 rc = -EIO;
 489                 goto fail1;
 490         }
 491
 492         /* We need rx buffers and interrupts. */
 493         already_up = (efx->net_dev->flags & IFF_UP);
 494         if (!already_up) {
 495                 rc = dev_open(efx->net_dev);
 496                 if (rc) {
 497                         EFX_ERR(efx, "failed opening device.\n");
 498                         goto fail2;
 499                 }
 500         }
 501
 502         memset(&efx_tests, 0, sizeof(efx_tests));
 503         offline = (test->flags & ETH_TEST_FL_OFFLINE);
 504
 505         /* Perform online self tests first */
 506         rc = efx_online_test(efx, &efx_tests);
 507         if (rc)
 508                 goto out;
 509
 510         /* Perform offline tests only if online tests passed */
 511         if (offline)
 512                 rc = efx_offline_test(efx, &efx_tests,
 513                                       efx->loopback_modes);
 514
 515  out:
 516         if (!already_up)
 517                 dev_close(efx->net_dev);
 518
 519         EFX_LOG(efx, "%s all %sline self-tests\n",
 520                 rc == 0 ? "passed" : "failed", offline ? "off" : "on");
 521
 522  fail2:
 523  fail1:
 524         /* Fill ethtool results structures */
 525         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 526         if (rc)
 527                 test->flags |= ETH_TEST_FL_FAILED;
 528 }
 529
 530 /* Restart autonegotiation */
 531 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 532 {
 533         struct efx_nic *efx = netdev_priv(net_dev);
 534
 535         return mii_nway_restart(&efx->mii);
 536 }
 537
 538 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 539 {
 540         struct efx_nic *efx = netdev_priv(net_dev);
 541
 542         return efx->link_up;
 543 }
 544
 545 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 546 {
 547         struct efx_nic *efx = netdev_priv(net_dev);
 548         struct efx_spi_device *spi = efx->spi_eeprom;
 549
 550         if (!spi)
 551                 return 0;
 552         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 553                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 554 }
 555
 556 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 557                                   struct ethtool_eeprom *eeprom, u8 *buf)
 558 {
 559         struct efx_nic *efx = netdev_priv(net_dev);
 560         struct efx_spi_device *spi = efx->spi_eeprom;
 561         size_t len;
 562         int rc;
 563
 564         mutex_lock(&efx->spi_lock);
 565         rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 566                              eeprom->len, &len, buf);
 567         mutex_unlock(&efx->spi_lock);
 568         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 569         eeprom->len = len;
 570         return rc;
 571 }
 572
 573 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 574                                   struct ethtool_eeprom *eeprom, u8 *buf)
 575 {
 576         struct efx_nic *efx = netdev_priv(net_dev);
 577         struct efx_spi_device *spi = efx->spi_eeprom;
 578         size_t len;
 579         int rc;
 580
 581         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 582                 return -EINVAL;
 583
 584         mutex_lock(&efx->spi_lock);
 585         rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 586                               eeprom->len, &len, buf);
 587         mutex_unlock(&efx->spi_lock);
 588         eeprom->len = len;
 589         return rc;
 590 }
 591
 592 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 593                                     struct ethtool_coalesce *coalesce)
 594 {
 595         struct efx_nic *efx = netdev_priv(net_dev);
 596         struct efx_tx_queue *tx_queue;
 597         struct efx_rx_queue *rx_queue;
 598         struct efx_channel *channel;
 599
 600         memset(coalesce, 0, sizeof(*coalesce));
 601
 602         /* Find lowest IRQ moderation across all used TX queues */
 603         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 604         efx_for_each_tx_queue(tx_queue, efx) {
 605                 channel = tx_queue->channel;
 606                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 607                         if (channel->used_flags != EFX_USED_BY_RX_TX)
 608                                 coalesce->tx_coalesce_usecs_irq =
 609                                         channel->irq_moderation;
 610                         else
 611                                 coalesce->tx_coalesce_usecs_irq = 0;
 612                 }
 613         }
 614
 615         /* Find lowest IRQ moderation across all used RX queues */
 616         coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
 617         efx_for_each_rx_queue(rx_queue, efx) {
 618                 channel = rx_queue->channel;
 619                 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
 620                         coalesce->rx_coalesce_usecs_irq =
 621                                 channel->irq_moderation;
 622         }
 623
 624         return 0;
 625 }
 626
 627 /* Set coalescing parameters
 628  * The difficulties occur for shared channels
 629  */
 630 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 631                                     struct ethtool_coalesce *coalesce)
 632 {
 633         struct efx_nic *efx = netdev_priv(net_dev);
 634         struct efx_channel *channel;
 635         struct efx_tx_queue *tx_queue;
 636         unsigned tx_usecs, rx_usecs;
 637
 638         if (coalesce->use_adaptive_rx_coalesce ||
 639             coalesce->use_adaptive_tx_coalesce)
 640                 return -EOPNOTSUPP;
 641
 642         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 643                 EFX_ERR(efx, "invalid coalescing setting. "
 644                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 645                 return -EOPNOTSUPP;
 646         }
 647
 648         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 649         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 650
 651         /* If the channel is shared only allow RX parameters to be set */
 652         efx_for_each_tx_queue(tx_queue, efx) {
 653                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 654                     tx_usecs) {
 655                         EFX_ERR(efx, "Channel is shared. "
 656                                 "Only RX coalescing may be set\n");
 657                         return -EOPNOTSUPP;
 658                 }
 659         }
 660
 661         efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
 662
 663         /* Reset channel to pick up new moderation value.  Note that
 664          * this may change the value of the irq_moderation field
 665          * (e.g. to allow for hardware timer granularity).
 666          */
 667         efx_for_each_channel(channel, efx)
 668                 falcon_set_int_moderation(channel);
 669
 670         return 0;
 671 }
 672
 673 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 674                                       struct ethtool_pauseparam *pause)
 675 {
 676         struct efx_nic *efx = netdev_priv(net_dev);
 677         enum efx_fc_type flow_control = efx->flow_control;
 678
 679         flow_control &= ~(EFX_FC_RX | EFX_FC_TX | EFX_FC_AUTO);
 680         flow_control |= pause->rx_pause ? EFX_FC_RX : 0;
 681         flow_control |= pause->tx_pause ? EFX_FC_TX : 0;
 682         flow_control |= pause->autoneg ? EFX_FC_AUTO : 0;
 683
 684         efx_reconfigure_port(efx);
 685         return 0;
 686 }
 687
 688 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 689                                        struct ethtool_pauseparam *pause)
 690 {
 691         struct efx_nic *efx = netdev_priv(net_dev);
 692
 693         pause->rx_pause = !!(efx->flow_control & EFX_FC_RX);
 694         pause->tx_pause = !!(efx->flow_control & EFX_FC_TX);
 695         pause->autoneg = !!(efx->flow_control & EFX_FC_AUTO);
 696 }
 697
 698
 699 struct ethtool_ops efx_ethtool_ops = {
 700         .get_settings           = efx_ethtool_get_settings,
 701         .set_settings           = efx_ethtool_set_settings,
 702         .get_drvinfo            = efx_ethtool_get_drvinfo,
 703         .nway_reset             = efx_ethtool_nway_reset,
 704         .get_link               = efx_ethtool_get_link,
 705         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 706         .get_eeprom             = efx_ethtool_get_eeprom,
 707         .set_eeprom             = efx_ethtool_set_eeprom,
 708         .get_coalesce           = efx_ethtool_get_coalesce,
 709         .set_coalesce           = efx_ethtool_set_coalesce,
 710         .get_pauseparam         = efx_ethtool_get_pauseparam,
 711         .set_pauseparam         = efx_ethtool_set_pauseparam,
 712         .get_rx_csum            = efx_ethtool_get_rx_csum,
 713         .set_rx_csum            = efx_ethtool_set_rx_csum,
 714         .get_tx_csum            = ethtool_op_get_tx_csum,
 715         .set_tx_csum            = ethtool_op_set_tx_csum,
 716         .get_sg                 = ethtool_op_get_sg,
 717         .set_sg                 = ethtool_op_set_sg,
 718         .get_tso                = ethtool_op_get_tso,
 719         .set_tso                = ethtool_op_set_tso,
 720         .get_flags              = ethtool_op_get_flags,
 721         .set_flags              = ethtool_op_set_flags,
 722         .get_sset_count         = efx_ethtool_get_sset_count,
 723         .self_test              = efx_ethtool_self_test,
 724         .get_strings            = efx_ethtool_get_strings,
 725         .phys_id                = efx_ethtool_phys_id,
 726         .get_ethtool_stats      = efx_ethtool_get_stats,
 727 };