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 "workarounds.h"
  16 #include "selftest.h"
  17 #include "efx.h"
  18 #include "ethtool.h"
  19 #include "falcon.h"
  20 #include "spi.h"
  21 #include "mdio_10g.h"
  22
  23 const char *efx_loopback_mode_names[] = {
  24         [LOOPBACK_NONE]         = "NONE",
  25         [LOOPBACK_GMAC]         = "GMAC",
  26         [LOOPBACK_XGMII]        = "XGMII",
  27         [LOOPBACK_XGXS]         = "XGXS",
  28         [LOOPBACK_XAUI]         = "XAUI",
  29         [LOOPBACK_GPHY]         = "GPHY",
  30         [LOOPBACK_PHYXS]        = "PHYXS",
  31         [LOOPBACK_PCS]          = "PCS",
  32         [LOOPBACK_PMAPMD]       = "PMA/PMD",
  33         [LOOPBACK_NETWORK]      = "NETWORK",
  34 };
  35
  36 struct ethtool_string {
  37         char name[ETH_GSTRING_LEN];
  38 };
  39
  40 struct efx_ethtool_stat {
  41         const char *name;
  42         enum {
  43                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  44                 EFX_ETHTOOL_STAT_SOURCE_nic,
  45                 EFX_ETHTOOL_STAT_SOURCE_channel
  46         } source;
  47         unsigned offset;
  48         u64(*get_stat) (void *field); /* Reader function */
  49 };
  50
  51 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  52 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  53                                 get_stat_function) {                    \
  54         .name = #stat_name,                                             \
  55         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  56         .offset = ((((field_type *) 0) ==                               \
  57                       &((struct efx_##source_name *)0)->field) ?        \
  58                     offsetof(struct efx_##source_name, field) :         \
  59                     offsetof(struct efx_##source_name, field)),         \
  60         .get_stat = get_stat_function,                                  \
  61 }
  62
  63 static u64 efx_get_uint_stat(void *field)
  64 {
  65         return *(unsigned int *)field;
  66 }
  67
  68 static u64 efx_get_ulong_stat(void *field)
  69 {
  70         return *(unsigned long *)field;
  71 }
  72
  73 static u64 efx_get_u64_stat(void *field)
  74 {
  75         return *(u64 *) field;
  76 }
  77
  78 static u64 efx_get_atomic_stat(void *field)
  79 {
  80         return atomic_read((atomic_t *) field);
  81 }
  82
  83 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  84         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  85                           unsigned long, efx_get_ulong_stat)
  86
  87 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  88         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  89                           u64, efx_get_u64_stat)
  90
  91 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  92         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  93                          unsigned int, efx_get_uint_stat)
  94
  95 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  96         EFX_ETHTOOL_STAT(field, nic, field,                     \
  97                          atomic_t, efx_get_atomic_stat)
  98
  99 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
 100         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
 101                          unsigned int, efx_get_uint_stat)
 102
 103 static struct efx_ethtool_stat efx_ethtool_stats[] = {
 104         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
 105         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
 106         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
 107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 119         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 120         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 121         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 122         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 124         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 125         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 126         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 127         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 128         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 129         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 130         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 131         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 132         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 133         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 134         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 135         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 150         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 151         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 152         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 153         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 154         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 155         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 156         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 157         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 158         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 159         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 160         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 161         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 162         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 163         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 164         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 165         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 166         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 167         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 168         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 169         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 170 };
 171
 172 /* Number of ethtool statistics */
 173 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 174
 175 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
 176
 177 /**************************************************************************
 178  *
 179  * Ethtool operations
 180  *
 181  **************************************************************************
 182  */
 183
 184 /* Identify device by flashing LEDs */
 185 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
 186 {
 187         struct efx_nic *efx = netdev_priv(net_dev);
 188
 189         efx->board_info.blink(efx, 1);
 190         set_current_state(TASK_INTERRUPTIBLE);
 191         if (count)
 192                 schedule_timeout(count * HZ);
 193         else
 194                 schedule();
 195         efx->board_info.blink(efx, 0);
 196         return 0;
 197 }
 198
 199 /* This must be called with rtnl_lock held. */
 200 int efx_ethtool_get_settings(struct net_device *net_dev,
 201                              struct ethtool_cmd *ecmd)
 202 {
 203         struct efx_nic *efx = netdev_priv(net_dev);
 204
 205         mutex_lock(&efx->mac_lock);
 206         efx->phy_op->get_settings(efx, ecmd);
 207         mutex_unlock(&efx->mac_lock);
 208
 209         /* Falcon GMAC does not support 1000Mbps HD */
 210         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
 211
 212         return 0;
 213 }
 214
 215 /* This must be called with rtnl_lock held. */
 216 int efx_ethtool_set_settings(struct net_device *net_dev,
 217                              struct ethtool_cmd *ecmd)
 218 {
 219         struct efx_nic *efx = netdev_priv(net_dev);
 220         int rc;
 221
 222         if (EFX_WORKAROUND_13963(efx) && !ecmd->autoneg)
 223                 return -EINVAL;
 224
 225         /* Falcon GMAC does not support 1000Mbps HD */
 226         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
 227                 EFX_LOG(efx, "rejecting unsupported 1000Mbps HD"
 228                         " setting\n");
 229                 return -EINVAL;
 230         }
 231
 232         mutex_lock(&efx->mac_lock);
 233         rc = efx->phy_op->set_settings(efx, ecmd);
 234         mutex_unlock(&efx->mac_lock);
 235         if (!rc)
 236                 efx_reconfigure_port(efx);
 237
 238         return rc;
 239 }
 240
 241 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 242                                     struct ethtool_drvinfo *info)
 243 {
 244         struct efx_nic *efx = netdev_priv(net_dev);
 245
 246         strlcpy(info->driver, EFX_DRIVER_NAME, sizeof(info->driver));
 247         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 248         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 249 }
 250
 251 /**
 252  * efx_fill_test - fill in an individual self-test entry
 253  * @test_index:         Index of the test
 254  * @strings:            Ethtool strings, or %NULL
 255  * @data:               Ethtool test results, or %NULL
 256  * @test:               Pointer to test result (used only if data != %NULL)
 257  * @unit_format:        Unit name format (e.g. "chan\%d")
 258  * @unit_id:            Unit id (e.g. 0 for "chan0")
 259  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 260  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 261  *
 262  * Fill in an individual self-test entry.
 263  */
 264 static void efx_fill_test(unsigned int test_index,
 265                           struct ethtool_string *strings, u64 *data,
 266                           int *test, const char *unit_format, int unit_id,
 267                           const char *test_format, const char *test_id)
 268 {
 269         struct ethtool_string unit_str, test_str;
 270
 271         /* Fill data value, if applicable */
 272         if (data)
 273                 data[test_index] = *test;
 274
 275         /* Fill string, if applicable */
 276         if (strings) {
 277                 snprintf(unit_str.name, sizeof(unit_str.name),
 278                          unit_format, unit_id);
 279                 snprintf(test_str.name, sizeof(test_str.name),
 280                          test_format, test_id);
 281                 snprintf(strings[test_index].name,
 282                          sizeof(strings[test_index].name),
 283                          "%-6s %-24s", unit_str.name, test_str.name);
 284         }
 285 }
 286
 287 #define EFX_PORT_NAME "port%d", 0
 288 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 289 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 290 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 291 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 292         "loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
 293
 294 /**
 295  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 296  * @efx:                Efx NIC
 297  * @lb_tests:           Efx loopback self-test results structure
 298  * @mode:               Loopback test mode
 299  * @test_index:         Starting index of the test
 300  * @strings:            Ethtool strings, or %NULL
 301  * @data:               Ethtool test results, or %NULL
 302  */
 303 static int efx_fill_loopback_test(struct efx_nic *efx,
 304                                   struct efx_loopback_self_tests *lb_tests,
 305                                   enum efx_loopback_mode mode,
 306                                   unsigned int test_index,
 307                                   struct ethtool_string *strings, u64 *data)
 308 {
 309         struct efx_tx_queue *tx_queue;
 310
 311         efx_for_each_tx_queue(tx_queue, efx) {
 312                 efx_fill_test(test_index++, strings, data,
 313                               &lb_tests->tx_sent[tx_queue->queue],
 314                               EFX_TX_QUEUE_NAME(tx_queue),
 315                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 316                 efx_fill_test(test_index++, strings, data,
 317                               &lb_tests->tx_done[tx_queue->queue],
 318                               EFX_TX_QUEUE_NAME(tx_queue),
 319                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 320         }
 321         efx_fill_test(test_index++, strings, data,
 322                       &lb_tests->rx_good,
 323                       EFX_PORT_NAME,
 324                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 325         efx_fill_test(test_index++, strings, data,
 326                       &lb_tests->rx_bad,
 327                       EFX_PORT_NAME,
 328                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 329
 330         return test_index;
 331 }
 332
 333 /**
 334  * efx_ethtool_fill_self_tests - get self-test details
 335  * @efx:                Efx NIC
 336  * @tests:              Efx self-test results structure, or %NULL
 337  * @strings:            Ethtool strings, or %NULL
 338  * @data:               Ethtool test results, or %NULL
 339  */
 340 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 341                                        struct efx_self_tests *tests,
 342                                        struct ethtool_string *strings,
 343                                        u64 *data)
 344 {
 345         struct efx_channel *channel;
 346         unsigned int n = 0;
 347         enum efx_loopback_mode mode;
 348
 349         efx_fill_test(n++, strings, data, &tests->mii,
 350                       "core", 0, "mii", NULL);
 351         efx_fill_test(n++, strings, data, &tests->nvram,
 352                       "core", 0, "nvram", NULL);
 353         efx_fill_test(n++, strings, data, &tests->interrupt,
 354                       "core", 0, "interrupt", NULL);
 355
 356         /* Event queues */
 357         efx_for_each_channel(channel, efx) {
 358                 efx_fill_test(n++, strings, data,
 359                               &tests->eventq_dma[channel->channel],
 360                               EFX_CHANNEL_NAME(channel),
 361                               "eventq.dma", NULL);
 362                 efx_fill_test(n++, strings, data,
 363                               &tests->eventq_int[channel->channel],
 364                               EFX_CHANNEL_NAME(channel),
 365                               "eventq.int", NULL);
 366                 efx_fill_test(n++, strings, data,
 367                               &tests->eventq_poll[channel->channel],
 368                               EFX_CHANNEL_NAME(channel),
 369                               "eventq.poll", NULL);
 370         }
 371
 372         efx_fill_test(n++, strings, data, &tests->registers,
 373                       "core", 0, "registers", NULL);
 374         efx_fill_test(n++, strings, data, &tests->phy,
 375                       EFX_PORT_NAME, "phy", NULL);
 376
 377         /* Loopback tests */
 378         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 379                 if (!(efx->loopback_modes & (1 << mode)))
 380                         continue;
 381                 n = efx_fill_loopback_test(efx,
 382                                            &tests->loopback[mode], mode, n,
 383                                            strings, data);
 384         }
 385
 386         return n;
 387 }
 388
 389 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 390                                       int string_set)
 391 {
 392         switch (string_set) {
 393         case ETH_SS_STATS:
 394                 return EFX_ETHTOOL_NUM_STATS;
 395         case ETH_SS_TEST:
 396                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 397                                                    NULL, NULL, NULL);
 398         default:
 399                 return -EINVAL;
 400         }
 401 }
 402
 403 static void efx_ethtool_get_strings(struct net_device *net_dev,
 404                                     u32 string_set, u8 *strings)
 405 {
 406         struct efx_nic *efx = netdev_priv(net_dev);
 407         struct ethtool_string *ethtool_strings =
 408                 (struct ethtool_string *)strings;
 409         int i;
 410
 411         switch (string_set) {
 412         case ETH_SS_STATS:
 413                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 414                         strncpy(ethtool_strings[i].name,
 415                                 efx_ethtool_stats[i].name,
 416                                 sizeof(ethtool_strings[i].name));
 417                 break;
 418         case ETH_SS_TEST:
 419                 efx_ethtool_fill_self_tests(efx, NULL,
 420                                             ethtool_strings, NULL);
 421                 break;
 422         default:
 423                 /* No other string sets */
 424                 break;
 425         }
 426 }
 427
 428 static void efx_ethtool_get_stats(struct net_device *net_dev,
 429                                   struct ethtool_stats *stats,
 430                                   u64 *data)
 431 {
 432         struct efx_nic *efx = netdev_priv(net_dev);
 433         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 434         struct efx_ethtool_stat *stat;
 435         struct efx_channel *channel;
 436         int i;
 437
 438         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 439
 440         /* Update MAC and NIC statistics */
 441         dev_get_stats(net_dev);
 442
 443         /* Fill detailed statistics buffer */
 444         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 445                 stat = &efx_ethtool_stats[i];
 446                 switch (stat->source) {
 447                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 448                         data[i] = stat->get_stat((void *)mac_stats +
 449                                                  stat->offset);
 450                         break;
 451                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 452                         data[i] = stat->get_stat((void *)efx + stat->offset);
 453                         break;
 454                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 455                         data[i] = 0;
 456                         efx_for_each_channel(channel, efx)
 457                                 data[i] += stat->get_stat((void *)channel +
 458                                                           stat->offset);
 459                         break;
 460                 }
 461         }
 462 }
 463
 464 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 465 {
 466         struct efx_nic *efx = netdev_priv(net_dev);
 467
 468         /* No way to stop the hardware doing the checks; we just
 469          * ignore the result.
 470          */
 471         efx->rx_checksum_enabled = !!enable;
 472
 473         return 0;
 474 }
 475
 476 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 477 {
 478         struct efx_nic *efx = netdev_priv(net_dev);
 479
 480         return efx->rx_checksum_enabled;
 481 }
 482
 483 static void efx_ethtool_self_test(struct net_device *net_dev,
 484                                   struct ethtool_test *test, u64 *data)
 485 {
 486         struct efx_nic *efx = netdev_priv(net_dev);
 487         struct efx_self_tests efx_tests;
 488         int offline, already_up;
 489         int rc;
 490
 491         ASSERT_RTNL();
 492         if (efx->state != STATE_RUNNING) {
 493                 rc = -EIO;
 494                 goto fail1;
 495         }
 496
 497         /* We need rx buffers and interrupts. */
 498         already_up = (efx->net_dev->flags & IFF_UP);
 499         if (!already_up) {
 500                 rc = dev_open(efx->net_dev);
 501                 if (rc) {
 502                         EFX_ERR(efx, "failed opening device.\n");
 503                         goto fail2;
 504                 }
 505         }
 506
 507         memset(&efx_tests, 0, sizeof(efx_tests));
 508         offline = (test->flags & ETH_TEST_FL_OFFLINE);
 509
 510         /* Perform online self tests first */
 511         rc = efx_online_test(efx, &efx_tests);
 512         if (rc)
 513                 goto out;
 514
 515         /* Perform offline tests only if online tests passed */
 516         if (offline)
 517                 rc = efx_offline_test(efx, &efx_tests,
 518                                       efx->loopback_modes);
 519
 520  out:
 521         if (!already_up)
 522                 dev_close(efx->net_dev);
 523
 524         EFX_LOG(efx, "%s all %sline self-tests\n",
 525                 rc == 0 ? "passed" : "failed", offline ? "off" : "on");
 526
 527  fail2:
 528  fail1:
 529         /* Fill ethtool results structures */
 530         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 531         if (rc)
 532                 test->flags |= ETH_TEST_FL_FAILED;
 533 }
 534
 535 /* Restart autonegotiation */
 536 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 537 {
 538         struct efx_nic *efx = netdev_priv(net_dev);
 539
 540         return mii_nway_restart(&efx->mii);
 541 }
 542
 543 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 544 {
 545         struct efx_nic *efx = netdev_priv(net_dev);
 546
 547         return efx->link_up;
 548 }
 549
 550 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 551 {
 552         struct efx_nic *efx = netdev_priv(net_dev);
 553         struct efx_spi_device *spi = efx->spi_eeprom;
 554
 555         if (!spi)
 556                 return 0;
 557         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 558                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 559 }
 560
 561 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 562                                   struct ethtool_eeprom *eeprom, u8 *buf)
 563 {
 564         struct efx_nic *efx = netdev_priv(net_dev);
 565         struct efx_spi_device *spi = efx->spi_eeprom;
 566         size_t len;
 567         int rc;
 568
 569         mutex_lock(&efx->spi_lock);
 570         rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 571                              eeprom->len, &len, buf);
 572         mutex_unlock(&efx->spi_lock);
 573         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 574         eeprom->len = len;
 575         return rc;
 576 }
 577
 578 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 579                                   struct ethtool_eeprom *eeprom, u8 *buf)
 580 {
 581         struct efx_nic *efx = netdev_priv(net_dev);
 582         struct efx_spi_device *spi = efx->spi_eeprom;
 583         size_t len;
 584         int rc;
 585
 586         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 587                 return -EINVAL;
 588
 589         mutex_lock(&efx->spi_lock);
 590         rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 591                               eeprom->len, &len, buf);
 592         mutex_unlock(&efx->spi_lock);
 593         eeprom->len = len;
 594         return rc;
 595 }
 596
 597 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 598                                     struct ethtool_coalesce *coalesce)
 599 {
 600         struct efx_nic *efx = netdev_priv(net_dev);
 601         struct efx_tx_queue *tx_queue;
 602         struct efx_rx_queue *rx_queue;
 603         struct efx_channel *channel;
 604
 605         memset(coalesce, 0, sizeof(*coalesce));
 606
 607         /* Find lowest IRQ moderation across all used TX queues */
 608         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 609         efx_for_each_tx_queue(tx_queue, efx) {
 610                 channel = tx_queue->channel;
 611                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 612                         if (channel->used_flags != EFX_USED_BY_RX_TX)
 613                                 coalesce->tx_coalesce_usecs_irq =
 614                                         channel->irq_moderation;
 615                         else
 616                                 coalesce->tx_coalesce_usecs_irq = 0;
 617                 }
 618         }
 619
 620         /* Find lowest IRQ moderation across all used RX queues */
 621         coalesce->rx_coalesce_usecs_irq = ~((u32) 0);
 622         efx_for_each_rx_queue(rx_queue, efx) {
 623                 channel = rx_queue->channel;
 624                 if (channel->irq_moderation < coalesce->rx_coalesce_usecs_irq)
 625                         coalesce->rx_coalesce_usecs_irq =
 626                                 channel->irq_moderation;
 627         }
 628
 629         return 0;
 630 }
 631
 632 /* Set coalescing parameters
 633  * The difficulties occur for shared channels
 634  */
 635 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 636                                     struct ethtool_coalesce *coalesce)
 637 {
 638         struct efx_nic *efx = netdev_priv(net_dev);
 639         struct efx_channel *channel;
 640         struct efx_tx_queue *tx_queue;
 641         unsigned tx_usecs, rx_usecs;
 642
 643         if (coalesce->use_adaptive_rx_coalesce ||
 644             coalesce->use_adaptive_tx_coalesce)
 645                 return -EOPNOTSUPP;
 646
 647         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 648                 EFX_ERR(efx, "invalid coalescing setting. "
 649                         "Only rx/tx_coalesce_usecs_irq are supported\n");
 650                 return -EOPNOTSUPP;
 651         }
 652
 653         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 654         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 655
 656         /* If the channel is shared only allow RX parameters to be set */
 657         efx_for_each_tx_queue(tx_queue, efx) {
 658                 if ((tx_queue->channel->used_flags == EFX_USED_BY_RX_TX) &&
 659                     tx_usecs) {
 660                         EFX_ERR(efx, "Channel is shared. "
 661                                 "Only RX coalescing may be set\n");
 662                         return -EOPNOTSUPP;
 663                 }
 664         }
 665
 666         efx_init_irq_moderation(efx, tx_usecs, rx_usecs);
 667
 668         /* Reset channel to pick up new moderation value.  Note that
 669          * this may change the value of the irq_moderation field
 670          * (e.g. to allow for hardware timer granularity).
 671          */
 672         efx_for_each_channel(channel, efx)
 673                 falcon_set_int_moderation(channel);
 674
 675         return 0;
 676 }
 677
 678 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 679                                       struct ethtool_pauseparam *pause)
 680 {
 681         struct efx_nic *efx = netdev_priv(net_dev);
 682         enum efx_fc_type wanted_fc;
 683         bool reset;
 684
 685         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 686                      (pause->tx_pause ? EFX_FC_TX : 0) |
 687                      (pause->autoneg ? EFX_FC_AUTO : 0));
 688
 689         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 690                 EFX_LOG(efx, "Flow control unsupported: tx ON rx OFF\n");
 691                 return -EINVAL;
 692         }
 693
 694         if (!(efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) &&
 695             (wanted_fc & EFX_FC_AUTO)) {
 696                 EFX_LOG(efx, "PHY does not support flow control "
 697                         "autonegotiation\n");
 698                 return -EINVAL;
 699         }
 700
 701         /* TX flow control may automatically turn itself off if the
 702          * link partner (intermittently) stops responding to pause
 703          * frames. There isn't any indication that this has happened,
 704          * so the best we do is leave it up to the user to spot this
 705          * and fix it be cycling transmit flow control on this end. */
 706         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 707         if (EFX_WORKAROUND_11482(efx) && reset) {
 708                 if (falcon_rev(efx) >= FALCON_REV_B0) {
 709                         /* Recover by resetting the EM block */
 710                         if (efx->link_up)
 711                                 falcon_drain_tx_fifo(efx);
 712                 } else {
 713                         /* Schedule a reset to recover */
 714                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 715                 }
 716         }
 717
 718         /* Try to push the pause parameters */
 719         mutex_lock(&efx->mac_lock);
 720
 721         efx->wanted_fc = wanted_fc;
 722         mdio_clause45_set_pause(efx);
 723         __efx_reconfigure_port(efx);
 724
 725         mutex_unlock(&efx->mac_lock);
 726
 727         return 0;
 728 }
 729
 730 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 731                                        struct ethtool_pauseparam *pause)
 732 {
 733         struct efx_nic *efx = netdev_priv(net_dev);
 734
 735         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 736         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 737         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 738 }
 739
 740
 741 struct ethtool_ops efx_ethtool_ops = {
 742         .get_settings           = efx_ethtool_get_settings,
 743         .set_settings           = efx_ethtool_set_settings,
 744         .get_drvinfo            = efx_ethtool_get_drvinfo,
 745         .nway_reset             = efx_ethtool_nway_reset,
 746         .get_link               = efx_ethtool_get_link,
 747         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 748         .get_eeprom             = efx_ethtool_get_eeprom,
 749         .set_eeprom             = efx_ethtool_set_eeprom,
 750         .get_coalesce           = efx_ethtool_get_coalesce,
 751         .set_coalesce           = efx_ethtool_set_coalesce,
 752         .get_pauseparam         = efx_ethtool_get_pauseparam,
 753         .set_pauseparam         = efx_ethtool_set_pauseparam,
 754         .get_rx_csum            = efx_ethtool_get_rx_csum,
 755         .set_rx_csum            = efx_ethtool_set_rx_csum,
 756         .get_tx_csum            = ethtool_op_get_tx_csum,
 757         .set_tx_csum            = ethtool_op_set_tx_csum,
 758         .get_sg                 = ethtool_op_get_sg,
 759         .set_sg                 = ethtool_op_set_sg,
 760         .get_tso                = ethtool_op_get_tso,
 761         .set_tso                = ethtool_op_set_tso,
 762         .get_flags              = ethtool_op_get_flags,
 763         .set_flags              = ethtool_op_set_flags,
 764         .get_sset_count         = efx_ethtool_get_sset_count,
 765         .self_test              = efx_ethtool_self_test,
 766         .get_strings            = efx_ethtool_get_strings,
 767         .phys_id                = efx_ethtool_phys_id,
 768         .get_ethtool_stats      = efx_ethtool_get_stats,
 769 };