SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/sfc/ethtool.c

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2008 Solarflare Communications Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation, incorporated herein by reference.
   9  */
  10
  11 #include <linux/netdevice.h>
  12 #include <linux/ethtool.h>
  13 #include <linux/mdio.h>
  14 #include <linux/rtnetlink.h>
  15 #include "net_driver.h"
  16 #include "workarounds.h"
  17 #include "selftest.h"
  18 #include "efx.h"
  19 #include "falcon.h"
  20 #include "spi.h"
  21 #include "mdio_10g.h"
  22
  23 struct ethtool_string {
  24         char name[ETH_GSTRING_LEN];
  25 };
  26
  27 struct efx_ethtool_stat {
  28         const char *name;
  29         enum {
  30                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  31                 EFX_ETHTOOL_STAT_SOURCE_nic,
  32                 EFX_ETHTOOL_STAT_SOURCE_channel
  33         } source;
  34         unsigned offset;
  35         u64(*get_stat) (void *field); /* Reader function */
  36 };
  37
  38 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  39 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  40                                 get_stat_function) {                    \
  41         .name = #stat_name,                                             \
  42         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  43         .offset = ((((field_type *) 0) ==                               \
  44                       &((struct efx_##source_name *)0)->field) ?        \
  45                     offsetof(struct efx_##source_name, field) :         \
  46                     offsetof(struct efx_##source_name, field)),         \
  47         .get_stat = get_stat_function,                                  \
  48 }
  49
  50 static u64 efx_get_uint_stat(void *field)
  51 {
  52         return *(unsigned int *)field;
  53 }
  54
  55 static u64 efx_get_ulong_stat(void *field)
  56 {
  57         return *(unsigned long *)field;
  58 }
  59
  60 static u64 efx_get_u64_stat(void *field)
  61 {
  62         return *(u64 *) field;
  63 }
  64
  65 static u64 efx_get_atomic_stat(void *field)
  66 {
  67         return atomic_read((atomic_t *) field);
  68 }
  69
  70 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  71         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  72                           unsigned long, efx_get_ulong_stat)
  73
  74 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  75         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  76                           u64, efx_get_u64_stat)
  77
  78 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  79         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  80                          unsigned int, efx_get_uint_stat)
  81
  82 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  83         EFX_ETHTOOL_STAT(field, nic, field,                     \
  84                          atomic_t, efx_get_atomic_stat)
  85
  86 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
  87         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
  88                          unsigned int, efx_get_uint_stat)
  89
  90 static struct efx_ethtool_stat efx_ethtool_stats[] = {
  91         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
  92         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
  93         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
  94         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
  95         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
  96         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
  97         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
  98         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
  99         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
 100         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 101         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 102         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 103         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 104         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 105         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 106         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 120         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 121         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 122         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 124         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 125         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 126         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 127         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 128         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 129         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 130         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 131         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 132         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 133         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 134         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 135         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 151         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 152         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 153         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 154         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 155         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 156         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
 157         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 158 };
 159
 160 /* Number of ethtool statistics */
 161 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 162
 163 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
 164
 165 /**************************************************************************
 166  *
 167  * Ethtool operations
 168  *
 169  **************************************************************************
 170  */
 171
 172 /* Identify device by flashing LEDs */
 173 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
 174 {
 175         struct efx_nic *efx = netdev_priv(net_dev);
 176
 177         do {
 178                 falcon_board(efx)->type->set_id_led(efx, EFX_LED_ON);
 179                 schedule_timeout_interruptible(HZ / 2);
 180
 181                 falcon_board(efx)->type->set_id_led(efx, EFX_LED_OFF);
 182                 schedule_timeout_interruptible(HZ / 2);
 183         } while (!signal_pending(current) && --count != 0);
 184
 185         falcon_board(efx)->type->set_id_led(efx, EFX_LED_DEFAULT);
 186         return 0;
 187 }
 188
 189 /* This must be called with rtnl_lock held. */
 190 int efx_ethtool_get_settings(struct net_device *net_dev,
 191                              struct ethtool_cmd *ecmd)
 192 {
 193         struct efx_nic *efx = netdev_priv(net_dev);
 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
 202         return 0;
 203 }
 204
 205 /* This must be called with rtnl_lock held. */
 206 int efx_ethtool_set_settings(struct net_device *net_dev,
 207                              struct ethtool_cmd *ecmd)
 208 {
 209         struct efx_nic *efx = netdev_priv(net_dev);
 210         int rc;
 211
 212         /* Falcon GMAC does not support 1000Mbps HD */
 213         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
 214                 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
 215                         " setting\n");
 216                 return -EINVAL;
 217         }
 218
 219         mutex_lock(&efx->mac_lock);
 220         rc = efx->phy_op->set_settings(efx, ecmd);
 221         mutex_unlock(&efx->mac_lock);
 222         if (!rc)
 223                 efx_reconfigure_port(efx);
 224
 225         return rc;
 226 }
 227
 228 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 229                                     struct ethtool_drvinfo *info)
 230 {
 231         struct efx_nic *efx = netdev_priv(net_dev);
 232
 233         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
 234         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 235         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 236 }
 237
 238 /**
 239  * efx_fill_test - fill in an individual self-test entry
 240  * @test_index:         Index of the test
 241  * @strings:            Ethtool strings, or %NULL
 242  * @data:               Ethtool test results, or %NULL
 243  * @test:               Pointer to test result (used only if data != %NULL)
 244  * @unit_format:        Unit name format (e.g. "chan\%d")
 245  * @unit_id:            Unit id (e.g. 0 for "chan0")
 246  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 247  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 248  *
 249  * Fill in an individual self-test entry.
 250  */
 251 static void efx_fill_test(unsigned int test_index,
 252                           struct ethtool_string *strings, u64 *data,
 253                           int *test, const char *unit_format, int unit_id,
 254                           const char *test_format, const char *test_id)
 255 {
 256         struct ethtool_string unit_str, test_str;
 257
 258         /* Fill data value, if applicable */
 259         if (data)
 260                 data[test_index] = *test;
 261
 262         /* Fill string, if applicable */
 263         if (strings) {
 264                 if (strchr(unit_format, '%'))
 265                         snprintf(unit_str.name, sizeof(unit_str.name),
 266                                  unit_format, unit_id);
 267                 else
 268                         strcpy(unit_str.name, unit_format);
 269                 snprintf(test_str.name, sizeof(test_str.name),
 270                          test_format, test_id);
 271                 snprintf(strings[test_index].name,
 272                          sizeof(strings[test_index].name),
 273                          "%-6s %-24s", unit_str.name, test_str.name);
 274         }
 275 }
 276
 277 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 278 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 279 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 280 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 281         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 282
 283 /**
 284  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 285  * @efx:                Efx NIC
 286  * @lb_tests:           Efx loopback self-test results structure
 287  * @mode:               Loopback test mode
 288  * @test_index:         Starting index of the test
 289  * @strings:            Ethtool strings, or %NULL
 290  * @data:               Ethtool test results, or %NULL
 291  */
 292 static int efx_fill_loopback_test(struct efx_nic *efx,
 293                                   struct efx_loopback_self_tests *lb_tests,
 294                                   enum efx_loopback_mode mode,
 295                                   unsigned int test_index,
 296                                   struct ethtool_string *strings, u64 *data)
 297 {
 298         struct efx_tx_queue *tx_queue;
 299
 300         efx_for_each_tx_queue(tx_queue, efx) {
 301                 efx_fill_test(test_index++, strings, data,
 302                               &lb_tests->tx_sent[tx_queue->queue],
 303                               EFX_TX_QUEUE_NAME(tx_queue),
 304                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 305                 efx_fill_test(test_index++, strings, data,
 306                               &lb_tests->tx_done[tx_queue->queue],
 307                               EFX_TX_QUEUE_NAME(tx_queue),
 308                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 309         }
 310         efx_fill_test(test_index++, strings, data,
 311                       &lb_tests->rx_good,
 312                       "rx", 0,
 313                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 314         efx_fill_test(test_index++, strings, data,
 315                       &lb_tests->rx_bad,
 316                       "rx", 0,
 317                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 318
 319         return test_index;
 320 }
 321
 322 /**
 323  * efx_ethtool_fill_self_tests - get self-test details
 324  * @efx:                Efx NIC
 325  * @tests:              Efx self-test results structure, or %NULL
 326  * @strings:            Ethtool strings, or %NULL
 327  * @data:               Ethtool test results, or %NULL
 328  */
 329 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 330                                        struct efx_self_tests *tests,
 331                                        struct ethtool_string *strings,
 332                                        u64 *data)
 333 {
 334         struct efx_channel *channel;
 335         unsigned int n = 0, i;
 336         enum efx_loopback_mode mode;
 337
 338         efx_fill_test(n++, strings, data, &tests->mdio,
 339                       "core", 0, "mdio", NULL);
 340         efx_fill_test(n++, strings, data, &tests->nvram,
 341                       "core", 0, "nvram", NULL);
 342         efx_fill_test(n++, strings, data, &tests->interrupt,
 343                       "core", 0, "interrupt", NULL);
 344
 345         /* Event queues */
 346         efx_for_each_channel(channel, efx) {
 347                 efx_fill_test(n++, strings, data,
 348                               &tests->eventq_dma[channel->channel],
 349                               EFX_CHANNEL_NAME(channel),
 350                               "eventq.dma", NULL);
 351                 efx_fill_test(n++, strings, data,
 352                               &tests->eventq_int[channel->channel],
 353                               EFX_CHANNEL_NAME(channel),
 354                               "eventq.int", NULL);
 355                 efx_fill_test(n++, strings, data,
 356                               &tests->eventq_poll[channel->channel],
 357                               EFX_CHANNEL_NAME(channel),
 358                               "eventq.poll", NULL);
 359         }
 360
 361         efx_fill_test(n++, strings, data, &tests->registers,
 362                       "core", 0, "registers", NULL);
 363
 364         for (i = 0; i < efx->phy_op->num_tests; i++)
 365                 efx_fill_test(n++, strings, data, &tests->phy[i],
 366                               "phy", 0, efx->phy_op->test_names[i], NULL);
 367
 368         /* Loopback tests */
 369         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 370                 if (!(efx->loopback_modes & (1 << mode)))
 371                         continue;
 372                 n = efx_fill_loopback_test(efx,
 373                                            &tests->loopback[mode], mode, n,
 374                                            strings, data);
 375         }
 376
 377         return n;
 378 }
 379
 380 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 381                                       int string_set)
 382 {
 383         switch (string_set) {
 384         case ETH_SS_STATS:
 385                 return EFX_ETHTOOL_NUM_STATS;
 386         case ETH_SS_TEST:
 387                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 388                                                    NULL, NULL, NULL);
 389         default:
 390                 return -EINVAL;
 391         }
 392 }
 393
 394 static void efx_ethtool_get_strings(struct net_device *net_dev,
 395                                     u32 string_set, u8 *strings)
 396 {
 397         struct efx_nic *efx = netdev_priv(net_dev);
 398         struct ethtool_string *ethtool_strings =
 399                 (struct ethtool_string *)strings;
 400         int i;
 401
 402         switch (string_set) {
 403         case ETH_SS_STATS:
 404                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 405                         strncpy(ethtool_strings[i].name,
 406                                 efx_ethtool_stats[i].name,
 407                                 sizeof(ethtool_strings[i].name));
 408                 break;
 409         case ETH_SS_TEST:
 410                 efx_ethtool_fill_self_tests(efx, NULL,
 411                                             ethtool_strings, NULL);
 412                 break;
 413         default:
 414                 /* No other string sets */
 415                 break;
 416         }
 417 }
 418
 419 static void efx_ethtool_get_stats(struct net_device *net_dev,
 420                                   struct ethtool_stats *stats,
 421                                   u64 *data)
 422 {
 423         struct efx_nic *efx = netdev_priv(net_dev);
 424         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 425         struct efx_ethtool_stat *stat;
 426         struct efx_channel *channel;
 427         int i;
 428
 429         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 430
 431         /* Update MAC and NIC statistics */
 432         dev_get_stats(net_dev);
 433
 434         /* Fill detailed statistics buffer */
 435         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 436                 stat = &efx_ethtool_stats[i];
 437                 switch (stat->source) {
 438                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 439                         data[i] = stat->get_stat((void *)mac_stats +
 440                                                  stat->offset);
 441                         break;
 442                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 443                         data[i] = stat->get_stat((void *)efx + stat->offset);
 444                         break;
 445                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 446                         data[i] = 0;
 447                         efx_for_each_channel(channel, efx)
 448                                 data[i] += stat->get_stat((void *)channel +
 449                                                           stat->offset);
 450                         break;
 451                 }
 452         }
 453 }
 454
 455 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 456 {
 457         struct efx_nic *efx = netdev_priv(net_dev);
 458
 459         /* No way to stop the hardware doing the checks; we just
 460          * ignore the result.
 461          */
 462         efx->rx_checksum_enabled = !!enable;
 463
 464         return 0;
 465 }
 466
 467 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 468 {
 469         struct efx_nic *efx = netdev_priv(net_dev);
 470
 471         return efx->rx_checksum_enabled;
 472 }
 473
 474 static void efx_ethtool_self_test(struct net_device *net_dev,
 475                                   struct ethtool_test *test, u64 *data)
 476 {
 477         struct efx_nic *efx = netdev_priv(net_dev);
 478         struct efx_self_tests efx_tests;
 479         int already_up;
 480         int rc;
 481
 482         ASSERT_RTNL();
 483         if (efx->state != STATE_RUNNING) {
 484                 rc = -EIO;
 485                 goto fail1;
 486         }
 487
 488         /* We need rx buffers and interrupts. */
 489         already_up = (efx->net_dev->flags & IFF_UP);
 490         if (!already_up) {
 491                 rc = dev_open(efx->net_dev);
 492                 if (rc) {
 493                         EFX_ERR(efx, "failed opening device.\n");
 494                         goto fail2;
 495                 }
 496         }
 497
 498         memset(&efx_tests, 0, sizeof(efx_tests));
 499
 500         rc = efx_selftest(efx, &efx_tests, test->flags);
 501
 502         if (!already_up)
 503                 dev_close(efx->net_dev);
 504
 505         EFX_LOG(efx, "%s %sline self-tests\n",
 506                 rc == 0 ? "passed" : "failed",
 507                 (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 508
 509  fail2:
 510  fail1:
 511         /* Fill ethtool results structures */
 512         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 513         if (rc)
 514                 test->flags |= ETH_TEST_FL_FAILED;
 515 }
 516
 517 /* Restart autonegotiation */
 518 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 519 {
 520         struct efx_nic *efx = netdev_priv(net_dev);
 521
 522         return mdio45_nway_restart(&efx->mdio);
 523 }
 524
 525 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 526 {
 527         struct efx_nic *efx = netdev_priv(net_dev);
 528
 529         return efx->link_state.up;
 530 }
 531
 532 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 533 {
 534         struct efx_nic *efx = netdev_priv(net_dev);
 535         struct efx_spi_device *spi = efx->spi_eeprom;
 536
 537         if (!spi)
 538                 return 0;
 539         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 540                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 541 }
 542
 543 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 544                                   struct ethtool_eeprom *eeprom, u8 *buf)
 545 {
 546         struct efx_nic *efx = netdev_priv(net_dev);
 547         struct efx_spi_device *spi = efx->spi_eeprom;
 548         size_t len;
 549         int rc;
 550
 551         rc = mutex_lock_interruptible(&efx->spi_lock);
 552         if (rc)
 553                 return rc;
 554         rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 555                              eeprom->len, &len, buf);
 556         mutex_unlock(&efx->spi_lock);
 557
 558         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 559         eeprom->len = len;
 560         return rc;
 561 }
 562
 563 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 564                                   struct ethtool_eeprom *eeprom, u8 *buf)
 565 {
 566         struct efx_nic *efx = netdev_priv(net_dev);
 567         struct efx_spi_device *spi = efx->spi_eeprom;
 568         size_t len;
 569         int rc;
 570
 571         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 572                 return -EINVAL;
 573
 574         rc = mutex_lock_interruptible(&efx->spi_lock);
 575         if (rc)
 576                 return rc;
 577         rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 578                               eeprom->len, &len, buf);
 579         mutex_unlock(&efx->spi_lock);
 580
 581         eeprom->len = len;
 582         return rc;
 583 }
 584
 585 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 586                                     struct ethtool_coalesce *coalesce)
 587 {
 588         struct efx_nic *efx = netdev_priv(net_dev);
 589         struct efx_tx_queue *tx_queue;
 590         struct efx_channel *channel;
 591
 592         memset(coalesce, 0, sizeof(*coalesce));
 593
 594         /* Find lowest IRQ moderation across all used TX queues */
 595         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 596         efx_for_each_tx_queue(tx_queue, efx) {
 597                 channel = tx_queue->channel;
 598                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 599                         if (channel->used_flags != EFX_USED_BY_RX_TX)
 600                                 coalesce->tx_coalesce_usecs_irq =
 601                                         channel->irq_moderation;
 602                         else
 603                                 coalesce->tx_coalesce_usecs_irq = 0;
 604                 }
 605         }
 606
 607         coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
 608         coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
 609
 610         coalesce->tx_coalesce_usecs_irq *= FALCON_IRQ_MOD_RESOLUTION;
 611         coalesce->rx_coalesce_usecs_irq *= FALCON_IRQ_MOD_RESOLUTION;
 612
 613         return 0;
 614 }
 615
 616 /* Set coalescing parameters
 617  * The difficulties occur for shared channels
 618  */
 619 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 620                                     struct ethtool_coalesce *coalesce)
 621 {
 622         struct efx_nic *efx = netdev_priv(net_dev);
 623         struct efx_channel *channel;
 624         struct efx_tx_queue *tx_queue;
 625         unsigned tx_usecs, rx_usecs, adaptive;
 626
 627         if (coalesce->use_adaptive_tx_coalesce)
 628                 return -EOPNOTSUPP;
 629
 630         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 631                 EFX_ERR(efx, "invalid coalescing setting. "
 632                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 633                 return -EOPNOTSUPP;
 634         }
 635
 636         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 637         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 638         adaptive = coalesce->use_adaptive_rx_coalesce;
 639
 640         /* If the channel is shared only allow RX parameters to be set */
 641         efx_for_each_tx_queue(tx_queue, efx) {
 642                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 643                     tx_usecs) {
 644                         EFX_ERR(efx, "Channel is shared. "
 645                                 "Only RX coalescing may be set\n");
 646                         return -EOPNOTSUPP;
 647                 }
 648         }
 649
 650         efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
 651         efx_for_each_channel(channel, efx)
 652                 falcon_set_int_moderation(channel);
 653
 654         return 0;
 655 }
 656
 657 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 658                                       struct ethtool_pauseparam *pause)
 659 {
 660         struct efx_nic *efx = netdev_priv(net_dev);
 661         enum efx_fc_type wanted_fc;
 662         bool reset;
 663
 664         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 665                      (pause->tx_pause ? EFX_FC_TX : 0) |
 666                      (pause->autoneg ? EFX_FC_AUTO : 0));
 667
 668         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 669                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
 670                 return -EINVAL;
 671         }
 672
 673         if (!(efx->phy_op->mmds & MDIO_DEVS_AN) &&
 674             (wanted_fc & EFX_FC_AUTO)) {
 675                 EFX_LOG(efx, "PHY does not support flow control "
 676                         "autonegotiation\n");
 677                 return -EINVAL;
 678         }
 679
 680         /* TX flow control may automatically turn itself off if the
 681          * link partner (intermittently) stops responding to pause
 682          * frames. There isn't any indication that this has happened,
 683          * so the best we do is leave it up to the user to spot this
 684          * and fix it be cycling transmit flow control on this end. */
 685         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 686         if (EFX_WORKAROUND_11482(efx) && reset) {
 687                 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
 688                         /* Recover by resetting the EM block */
 689                         if (efx->link_state.up)
 690                                 falcon_drain_tx_fifo(efx);
 691                 } else {
 692                         /* Schedule a reset to recover */
 693                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 694                 }
 695         }
 696
 697         /* Try to push the pause parameters */
 698         mutex_lock(&efx->mac_lock);
 699
 700         efx->wanted_fc = wanted_fc;
 701         if (efx->phy_op->mmds & MDIO_DEVS_AN)
 702                 mdio45_ethtool_spauseparam_an(&efx->mdio, pause);
 703         __efx_reconfigure_port(efx);
 704
 705         mutex_unlock(&efx->mac_lock);
 706
 707         return 0;
 708 }
 709
 710 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 711                                        struct ethtool_pauseparam *pause)
 712 {
 713         struct efx_nic *efx = netdev_priv(net_dev);
 714
 715         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 716         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 717         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 718 }
 719
 720
 721 const struct ethtool_ops efx_ethtool_ops = {
 722         .get_settings           = efx_ethtool_get_settings,
 723         .set_settings           = efx_ethtool_set_settings,
 724         .get_drvinfo            = efx_ethtool_get_drvinfo,
 725         .nway_reset             = efx_ethtool_nway_reset,
 726         .get_link               = efx_ethtool_get_link,
 727         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 728         .get_eeprom             = efx_ethtool_get_eeprom,
 729         .set_eeprom             = efx_ethtool_set_eeprom,
 730         .get_coalesce           = efx_ethtool_get_coalesce,
 731         .set_coalesce           = efx_ethtool_set_coalesce,
 732         .get_pauseparam         = efx_ethtool_get_pauseparam,
 733         .set_pauseparam         = efx_ethtool_set_pauseparam,
 734         .get_rx_csum            = efx_ethtool_get_rx_csum,
 735         .set_rx_csum            = efx_ethtool_set_rx_csum,
 736         .get_tx_csum            = ethtool_op_get_tx_csum,
 737         .set_tx_csum            = ethtool_op_set_tx_csum,
 738         .get_sg                 = ethtool_op_get_sg,
 739         .set_sg                 = ethtool_op_set_sg,
 740         .get_tso                = ethtool_op_get_tso,
 741         .set_tso                = ethtool_op_set_tso,
 742         .get_flags              = ethtool_op_get_flags,
 743         .set_flags              = ethtool_op_set_flags,
 744         .get_sset_count         = efx_ethtool_get_sset_count,
 745         .self_test              = efx_ethtool_self_test,
 746         .get_strings            = efx_ethtool_get_strings,
 747         .phys_id                = efx_ethtool_phys_id,
 748         .get_ethtool_stats      = efx_ethtool_get_stats,
 749 };