drivers/net/sfc/ethtool.c

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2009 Solarflare Communications Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation, incorporated herein by reference.
   9  */
  10
  11 #include <linux/netdevice.h>
  12 #include <linux/ethtool.h>
  13 #include <linux/rtnetlink.h>
  14 #include "net_driver.h"
  15 #include "workarounds.h"
  16 #include "selftest.h"
  17 #include "efx.h"
  18 #include "nic.h"
  19 #include "spi.h"
  20 #include "mdio_10g.h"
  21
  22 struct ethtool_string {
  23         char name[ETH_GSTRING_LEN];
  24 };
  25
  26 struct efx_ethtool_stat {
  27         const char *name;
  28         enum {
  29                 EFX_ETHTOOL_STAT_SOURCE_mac_stats,
  30                 EFX_ETHTOOL_STAT_SOURCE_nic,
  31                 EFX_ETHTOOL_STAT_SOURCE_channel
  32         } source;
  33         unsigned offset;
  34         u64(*get_stat) (void *field); /* Reader function */
  35 };
  36
  37 /* Initialiser for a struct #efx_ethtool_stat with type-checking */
  38 #define EFX_ETHTOOL_STAT(stat_name, source_name, field, field_type, \
  39                                 get_stat_function) {                    \
  40         .name = #stat_name,                                             \
  41         .source = EFX_ETHTOOL_STAT_SOURCE_##source_name,                \
  42         .offset = ((((field_type *) 0) ==                               \
  43                       &((struct efx_##source_name *)0)->field) ?        \
  44                     offsetof(struct efx_##source_name, field) :         \
  45                     offsetof(struct efx_##source_name, field)),         \
  46         .get_stat = get_stat_function,                                  \
  47 }
  48
  49 static u64 efx_get_uint_stat(void *field)
  50 {
  51         return *(unsigned int *)field;
  52 }
  53
  54 static u64 efx_get_ulong_stat(void *field)
  55 {
  56         return *(unsigned long *)field;
  57 }
  58
  59 static u64 efx_get_u64_stat(void *field)
  60 {
  61         return *(u64 *) field;
  62 }
  63
  64 static u64 efx_get_atomic_stat(void *field)
  65 {
  66         return atomic_read((atomic_t *) field);
  67 }
  68
  69 #define EFX_ETHTOOL_ULONG_MAC_STAT(field)                       \
  70         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  71                           unsigned long, efx_get_ulong_stat)
  72
  73 #define EFX_ETHTOOL_U64_MAC_STAT(field)                         \
  74         EFX_ETHTOOL_STAT(field, mac_stats, field,               \
  75                           u64, efx_get_u64_stat)
  76
  77 #define EFX_ETHTOOL_UINT_NIC_STAT(name)                         \
  78         EFX_ETHTOOL_STAT(name, nic, n_##name,                   \
  79                          unsigned int, efx_get_uint_stat)
  80
  81 #define EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(field)                \
  82         EFX_ETHTOOL_STAT(field, nic, field,                     \
  83                          atomic_t, efx_get_atomic_stat)
  84
  85 #define EFX_ETHTOOL_UINT_CHANNEL_STAT(field)                    \
  86         EFX_ETHTOOL_STAT(field, channel, n_##field,             \
  87                          unsigned int, efx_get_uint_stat)
  88
  89 static struct efx_ethtool_stat efx_ethtool_stats[] = {
  90         EFX_ETHTOOL_U64_MAC_STAT(tx_bytes),
  91         EFX_ETHTOOL_U64_MAC_STAT(tx_good_bytes),
  92         EFX_ETHTOOL_U64_MAC_STAT(tx_bad_bytes),
  93         EFX_ETHTOOL_ULONG_MAC_STAT(tx_packets),
  94         EFX_ETHTOOL_ULONG_MAC_STAT(tx_bad),
  95         EFX_ETHTOOL_ULONG_MAC_STAT(tx_pause),
  96         EFX_ETHTOOL_ULONG_MAC_STAT(tx_control),
  97         EFX_ETHTOOL_ULONG_MAC_STAT(tx_unicast),
  98         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multicast),
  99         EFX_ETHTOOL_ULONG_MAC_STAT(tx_broadcast),
 100         EFX_ETHTOOL_ULONG_MAC_STAT(tx_lt64),
 101         EFX_ETHTOOL_ULONG_MAC_STAT(tx_64),
 102         EFX_ETHTOOL_ULONG_MAC_STAT(tx_65_to_127),
 103         EFX_ETHTOOL_ULONG_MAC_STAT(tx_128_to_255),
 104         EFX_ETHTOOL_ULONG_MAC_STAT(tx_256_to_511),
 105         EFX_ETHTOOL_ULONG_MAC_STAT(tx_512_to_1023),
 106         EFX_ETHTOOL_ULONG_MAC_STAT(tx_1024_to_15xx),
 107         EFX_ETHTOOL_ULONG_MAC_STAT(tx_15xx_to_jumbo),
 108         EFX_ETHTOOL_ULONG_MAC_STAT(tx_gtjumbo),
 109         EFX_ETHTOOL_ULONG_MAC_STAT(tx_collision),
 110         EFX_ETHTOOL_ULONG_MAC_STAT(tx_single_collision),
 111         EFX_ETHTOOL_ULONG_MAC_STAT(tx_multiple_collision),
 112         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_collision),
 113         EFX_ETHTOOL_ULONG_MAC_STAT(tx_deferred),
 114         EFX_ETHTOOL_ULONG_MAC_STAT(tx_late_collision),
 115         EFX_ETHTOOL_ULONG_MAC_STAT(tx_excessive_deferred),
 116         EFX_ETHTOOL_ULONG_MAC_STAT(tx_non_tcpudp),
 117         EFX_ETHTOOL_ULONG_MAC_STAT(tx_mac_src_error),
 118         EFX_ETHTOOL_ULONG_MAC_STAT(tx_ip_src_error),
 119         EFX_ETHTOOL_U64_MAC_STAT(rx_bytes),
 120         EFX_ETHTOOL_U64_MAC_STAT(rx_good_bytes),
 121         EFX_ETHTOOL_U64_MAC_STAT(rx_bad_bytes),
 122         EFX_ETHTOOL_ULONG_MAC_STAT(rx_packets),
 123         EFX_ETHTOOL_ULONG_MAC_STAT(rx_good),
 124         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad),
 125         EFX_ETHTOOL_ULONG_MAC_STAT(rx_pause),
 126         EFX_ETHTOOL_ULONG_MAC_STAT(rx_control),
 127         EFX_ETHTOOL_ULONG_MAC_STAT(rx_unicast),
 128         EFX_ETHTOOL_ULONG_MAC_STAT(rx_multicast),
 129         EFX_ETHTOOL_ULONG_MAC_STAT(rx_broadcast),
 130         EFX_ETHTOOL_ULONG_MAC_STAT(rx_lt64),
 131         EFX_ETHTOOL_ULONG_MAC_STAT(rx_64),
 132         EFX_ETHTOOL_ULONG_MAC_STAT(rx_65_to_127),
 133         EFX_ETHTOOL_ULONG_MAC_STAT(rx_128_to_255),
 134         EFX_ETHTOOL_ULONG_MAC_STAT(rx_256_to_511),
 135         EFX_ETHTOOL_ULONG_MAC_STAT(rx_512_to_1023),
 136         EFX_ETHTOOL_ULONG_MAC_STAT(rx_1024_to_15xx),
 137         EFX_ETHTOOL_ULONG_MAC_STAT(rx_15xx_to_jumbo),
 138         EFX_ETHTOOL_ULONG_MAC_STAT(rx_gtjumbo),
 139         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_lt64),
 140         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_64_to_15xx),
 141         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_15xx_to_jumbo),
 142         EFX_ETHTOOL_ULONG_MAC_STAT(rx_bad_gtjumbo),
 143         EFX_ETHTOOL_ULONG_MAC_STAT(rx_overflow),
 144         EFX_ETHTOOL_ULONG_MAC_STAT(rx_missed),
 145         EFX_ETHTOOL_ULONG_MAC_STAT(rx_false_carrier),
 146         EFX_ETHTOOL_ULONG_MAC_STAT(rx_symbol_error),
 147         EFX_ETHTOOL_ULONG_MAC_STAT(rx_align_error),
 148         EFX_ETHTOOL_ULONG_MAC_STAT(rx_length_error),
 149         EFX_ETHTOOL_ULONG_MAC_STAT(rx_internal_error),
 150         EFX_ETHTOOL_UINT_NIC_STAT(rx_nodesc_drop_cnt),
 151         EFX_ETHTOOL_ATOMIC_NIC_ERROR_STAT(rx_reset),
 152         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tobe_disc),
 153         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_ip_hdr_chksum_err),
 154         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_tcp_udp_chksum_err),
 155         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_mcast_mismatch),
 156         EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_frm_trunc),
 157 };
 158
 159 /* Number of ethtool statistics */
 160 #define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
 161
 162 #define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
 163
 164 /**************************************************************************
 165  *
 166  * Ethtool operations
 167  *
 168  **************************************************************************
 169  */
 170
 171 /* Identify device by flashing LEDs */
 172 static int efx_ethtool_phys_id(struct net_device *net_dev, u32 count)
 173 {
 174         struct efx_nic *efx = netdev_priv(net_dev);
 175
 176         do {
 177                 efx->type->set_id_led(efx, EFX_LED_ON);
 178                 schedule_timeout_interruptible(HZ / 2);
 179
 180                 efx->type->set_id_led(efx, EFX_LED_OFF);
 181                 schedule_timeout_interruptible(HZ / 2);
 182         } while (!signal_pending(current) && --count != 0);
 183
 184         efx->type->set_id_led(efx, EFX_LED_DEFAULT);
 185         return 0;
 186 }
 187
 188 /* This must be called with rtnl_lock held. */
 189 int efx_ethtool_get_settings(struct net_device *net_dev,
 190                              struct ethtool_cmd *ecmd)
 191 {
 192         struct efx_nic *efx = netdev_priv(net_dev);
 193         struct efx_link_state *link_state = &efx->link_state;
 194
 195         mutex_lock(&efx->mac_lock);
 196         efx->phy_op->get_settings(efx, ecmd);
 197         mutex_unlock(&efx->mac_lock);
 198
 199         /* GMAC does not support 1000Mbps HD */
 200         ecmd->supported &= ~SUPPORTED_1000baseT_Half;
 201         /* Both MACs support pause frames (bidirectional and respond-only) */
 202         ecmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
 203
 204         if (LOOPBACK_INTERNAL(efx)) {
 205                 ecmd->speed = link_state->speed;
 206                 ecmd->duplex = link_state->fd ? DUPLEX_FULL : DUPLEX_HALF;
 207         }
 208
 209         return 0;
 210 }
 211
 212 /* This must be called with rtnl_lock held. */
 213 int efx_ethtool_set_settings(struct net_device *net_dev,
 214                              struct ethtool_cmd *ecmd)
 215 {
 216         struct efx_nic *efx = netdev_priv(net_dev);
 217         int rc;
 218
 219         /* GMAC does not support 1000Mbps HD */
 220         if (ecmd->speed == SPEED_1000 && ecmd->duplex != DUPLEX_FULL) {
 221                 netif_dbg(efx, drv, efx->net_dev,
 222                           "rejecting unsupported 1000Mbps HD setting\n");
 223                 return -EINVAL;
 224         }
 225
 226         mutex_lock(&efx->mac_lock);
 227         rc = efx->phy_op->set_settings(efx, ecmd);
 228         mutex_unlock(&efx->mac_lock);
 229         return rc;
 230 }
 231
 232 static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 233                                     struct ethtool_drvinfo *info)
 234 {
 235         struct efx_nic *efx = netdev_priv(net_dev);
 236
 237         strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 238         strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
 239         if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
 240                 siena_print_fwver(efx, info->fw_version,
 241                                   sizeof(info->fw_version));
 242         strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 243 }
 244
 245 static int efx_ethtool_get_regs_len(struct net_device *net_dev)
 246 {
 247         return efx_nic_get_regs_len(netdev_priv(net_dev));
 248 }
 249
 250 static void efx_ethtool_get_regs(struct net_device *net_dev,
 251                                  struct ethtool_regs *regs, void *buf)
 252 {
 253         struct efx_nic *efx = netdev_priv(net_dev);
 254
 255         regs->version = efx->type->revision;
 256         efx_nic_get_regs(efx, buf);
 257 }
 258
 259 static u32 efx_ethtool_get_msglevel(struct net_device *net_dev)
 260 {
 261         struct efx_nic *efx = netdev_priv(net_dev);
 262         return efx->msg_enable;
 263 }
 264
 265 static void efx_ethtool_set_msglevel(struct net_device *net_dev, u32 msg_enable)
 266 {
 267         struct efx_nic *efx = netdev_priv(net_dev);
 268         efx->msg_enable = msg_enable;
 269 }
 270
 271 /**
 272  * efx_fill_test - fill in an individual self-test entry
 273  * @test_index:         Index of the test
 274  * @strings:            Ethtool strings, or %NULL
 275  * @data:               Ethtool test results, or %NULL
 276  * @test:               Pointer to test result (used only if data != %NULL)
 277  * @unit_format:        Unit name format (e.g. "chan\%d")
 278  * @unit_id:            Unit id (e.g. 0 for "chan0")
 279  * @test_format:        Test name format (e.g. "loopback.\%s.tx.sent")
 280  * @test_id:            Test id (e.g. "PHYXS" for "loopback.PHYXS.tx_sent")
 281  *
 282  * Fill in an individual self-test entry.
 283  */
 284 static void efx_fill_test(unsigned int test_index,
 285                           struct ethtool_string *strings, u64 *data,
 286                           int *test, const char *unit_format, int unit_id,
 287                           const char *test_format, const char *test_id)
 288 {
 289         struct ethtool_string unit_str, test_str;
 290
 291         /* Fill data value, if applicable */
 292         if (data)
 293                 data[test_index] = *test;
 294
 295         /* Fill string, if applicable */
 296         if (strings) {
 297                 if (strchr(unit_format, '%'))
 298                         snprintf(unit_str.name, sizeof(unit_str.name),
 299                                  unit_format, unit_id);
 300                 else
 301                         strcpy(unit_str.name, unit_format);
 302                 snprintf(test_str.name, sizeof(test_str.name),
 303                          test_format, test_id);
 304                 snprintf(strings[test_index].name,
 305                          sizeof(strings[test_index].name),
 306                          "%-6s %-24s", unit_str.name, test_str.name);
 307         }
 308 }
 309
 310 #define EFX_CHANNEL_NAME(_channel) "chan%d", _channel->channel
 311 #define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
 312 #define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
 313 #define EFX_LOOPBACK_NAME(_mode, _counter)                      \
 314         "loopback.%s." _counter, STRING_TABLE_LOOKUP(_mode, efx_loopback_mode)
 315
 316 /**
 317  * efx_fill_loopback_test - fill in a block of loopback self-test entries
 318  * @efx:                Efx NIC
 319  * @lb_tests:           Efx loopback self-test results structure
 320  * @mode:               Loopback test mode
 321  * @test_index:         Starting index of the test
 322  * @strings:            Ethtool strings, or %NULL
 323  * @data:               Ethtool test results, or %NULL
 324  */
 325 static int efx_fill_loopback_test(struct efx_nic *efx,
 326                                   struct efx_loopback_self_tests *lb_tests,
 327                                   enum efx_loopback_mode mode,
 328                                   unsigned int test_index,
 329                                   struct ethtool_string *strings, u64 *data)
 330 {
 331         struct efx_tx_queue *tx_queue;
 332
 333         efx_for_each_channel_tx_queue(tx_queue, &efx->channel[0]) {
 334                 efx_fill_test(test_index++, strings, data,
 335                               &lb_tests->tx_sent[tx_queue->queue],
 336                               EFX_TX_QUEUE_NAME(tx_queue),
 337                               EFX_LOOPBACK_NAME(mode, "tx_sent"));
 338                 efx_fill_test(test_index++, strings, data,
 339                               &lb_tests->tx_done[tx_queue->queue],
 340                               EFX_TX_QUEUE_NAME(tx_queue),
 341                               EFX_LOOPBACK_NAME(mode, "tx_done"));
 342         }
 343         efx_fill_test(test_index++, strings, data,
 344                       &lb_tests->rx_good,
 345                       "rx", 0,
 346                       EFX_LOOPBACK_NAME(mode, "rx_good"));
 347         efx_fill_test(test_index++, strings, data,
 348                       &lb_tests->rx_bad,
 349                       "rx", 0,
 350                       EFX_LOOPBACK_NAME(mode, "rx_bad"));
 351
 352         return test_index;
 353 }
 354
 355 /**
 356  * efx_ethtool_fill_self_tests - get self-test details
 357  * @efx:                Efx NIC
 358  * @tests:              Efx self-test results structure, or %NULL
 359  * @strings:            Ethtool strings, or %NULL
 360  * @data:               Ethtool test results, or %NULL
 361  */
 362 static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 363                                        struct efx_self_tests *tests,
 364                                        struct ethtool_string *strings,
 365                                        u64 *data)
 366 {
 367         struct efx_channel *channel;
 368         unsigned int n = 0, i;
 369         enum efx_loopback_mode mode;
 370
 371         efx_fill_test(n++, strings, data, &tests->phy_alive,
 372                       "phy", 0, "alive", NULL);
 373         efx_fill_test(n++, strings, data, &tests->nvram,
 374                       "core", 0, "nvram", NULL);
 375         efx_fill_test(n++, strings, data, &tests->interrupt,
 376                       "core", 0, "interrupt", NULL);
 377
 378         /* Event queues */
 379         efx_for_each_channel(channel, efx) {
 380                 efx_fill_test(n++, strings, data,
 381                               &tests->eventq_dma[channel->channel],
 382                               EFX_CHANNEL_NAME(channel),
 383                               "eventq.dma", NULL);
 384                 efx_fill_test(n++, strings, data,
 385                               &tests->eventq_int[channel->channel],
 386                               EFX_CHANNEL_NAME(channel),
 387                               "eventq.int", NULL);
 388                 efx_fill_test(n++, strings, data,
 389                               &tests->eventq_poll[channel->channel],
 390                               EFX_CHANNEL_NAME(channel),
 391                               "eventq.poll", NULL);
 392         }
 393
 394         efx_fill_test(n++, strings, data, &tests->registers,
 395                       "core", 0, "registers", NULL);
 396
 397         if (efx->phy_op->run_tests != NULL) {
 398                 EFX_BUG_ON_PARANOID(efx->phy_op->test_name == NULL);
 399
 400                 for (i = 0; true; ++i) {
 401                         const char *name;
 402
 403                         EFX_BUG_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
 404                         name = efx->phy_op->test_name(efx, i);
 405                         if (name == NULL)
 406                                 break;
 407
 408                         efx_fill_test(n++, strings, data, &tests->phy_ext[i],
 409                                       "phy", 0, name, NULL);
 410                 }
 411         }
 412
 413         /* Loopback tests */
 414         for (mode = LOOPBACK_NONE; mode <= LOOPBACK_TEST_MAX; mode++) {
 415                 if (!(efx->loopback_modes & (1 << mode)))
 416                         continue;
 417                 n = efx_fill_loopback_test(efx,
 418                                            &tests->loopback[mode], mode, n,
 419                                            strings, data);
 420         }
 421
 422         return n;
 423 }
 424
 425 static int efx_ethtool_get_sset_count(struct net_device *net_dev,
 426                                       int string_set)
 427 {
 428         switch (string_set) {
 429         case ETH_SS_STATS:
 430                 return EFX_ETHTOOL_NUM_STATS;
 431         case ETH_SS_TEST:
 432                 return efx_ethtool_fill_self_tests(netdev_priv(net_dev),
 433                                                    NULL, NULL, NULL);
 434         default:
 435                 return -EINVAL;
 436         }
 437 }
 438
 439 static void efx_ethtool_get_strings(struct net_device *net_dev,
 440                                     u32 string_set, u8 *strings)
 441 {
 442         struct efx_nic *efx = netdev_priv(net_dev);
 443         struct ethtool_string *ethtool_strings =
 444                 (struct ethtool_string *)strings;
 445         int i;
 446
 447         switch (string_set) {
 448         case ETH_SS_STATS:
 449                 for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
 450                         strncpy(ethtool_strings[i].name,
 451                                 efx_ethtool_stats[i].name,
 452                                 sizeof(ethtool_strings[i].name));
 453                 break;
 454         case ETH_SS_TEST:
 455                 efx_ethtool_fill_self_tests(efx, NULL,
 456                                             ethtool_strings, NULL);
 457                 break;
 458         default:
 459                 /* No other string sets */
 460                 break;
 461         }
 462 }
 463
 464 static void efx_ethtool_get_stats(struct net_device *net_dev,
 465                                   struct ethtool_stats *stats,
 466                                   u64 *data)
 467 {
 468         struct efx_nic *efx = netdev_priv(net_dev);
 469         struct efx_mac_stats *mac_stats = &efx->mac_stats;
 470         struct efx_ethtool_stat *stat;
 471         struct efx_channel *channel;
 472         int i;
 473
 474         EFX_BUG_ON_PARANOID(stats->n_stats != EFX_ETHTOOL_NUM_STATS);
 475
 476         /* Update MAC and NIC statistics */
 477         dev_get_stats(net_dev);
 478
 479         /* Fill detailed statistics buffer */
 480         for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++) {
 481                 stat = &efx_ethtool_stats[i];
 482                 switch (stat->source) {
 483                 case EFX_ETHTOOL_STAT_SOURCE_mac_stats:
 484                         data[i] = stat->get_stat((void *)mac_stats +
 485                                                  stat->offset);
 486                         break;
 487                 case EFX_ETHTOOL_STAT_SOURCE_nic:
 488                         data[i] = stat->get_stat((void *)efx + stat->offset);
 489                         break;
 490                 case EFX_ETHTOOL_STAT_SOURCE_channel:
 491                         data[i] = 0;
 492                         efx_for_each_channel(channel, efx)
 493                                 data[i] += stat->get_stat((void *)channel +
 494                                                           stat->offset);
 495                         break;
 496                 }
 497         }
 498 }
 499
 500 static int efx_ethtool_set_tso(struct net_device *net_dev, u32 enable)
 501 {
 502         struct efx_nic *efx __attribute__ ((unused)) = netdev_priv(net_dev);
 503         unsigned long features;
 504
 505         features = NETIF_F_TSO;
 506         if (efx->type->offload_features & NETIF_F_V6_CSUM)
 507                 features |= NETIF_F_TSO6;
 508
 509         if (enable)
 510                 net_dev->features |= features;
 511         else
 512                 net_dev->features &= ~features;
 513
 514         return 0;
 515 }
 516
 517 static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable)
 518 {
 519         struct efx_nic *efx = netdev_priv(net_dev);
 520         unsigned long features = efx->type->offload_features & NETIF_F_ALL_CSUM;
 521
 522         if (enable)
 523                 net_dev->features |= features;
 524         else
 525                 net_dev->features &= ~features;
 526
 527         return 0;
 528 }
 529
 530 static int efx_ethtool_set_rx_csum(struct net_device *net_dev, u32 enable)
 531 {
 532         struct efx_nic *efx = netdev_priv(net_dev);
 533
 534         /* No way to stop the hardware doing the checks; we just
 535          * ignore the result.
 536          */
 537         efx->rx_checksum_enabled = !!enable;
 538
 539         return 0;
 540 }
 541
 542 static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
 543 {
 544         struct efx_nic *efx = netdev_priv(net_dev);
 545
 546         return efx->rx_checksum_enabled;
 547 }
 548
 549 static void efx_ethtool_self_test(struct net_device *net_dev,
 550                                   struct ethtool_test *test, u64 *data)
 551 {
 552         struct efx_nic *efx = netdev_priv(net_dev);
 553         struct efx_self_tests efx_tests;
 554         int already_up;
 555         int rc;
 556
 557         ASSERT_RTNL();
 558         if (efx->state != STATE_RUNNING) {
 559                 rc = -EIO;
 560                 goto fail1;
 561         }
 562
 563         /* We need rx buffers and interrupts. */
 564         already_up = (efx->net_dev->flags & IFF_UP);
 565         if (!already_up) {
 566                 rc = dev_open(efx->net_dev);
 567                 if (rc) {
 568                         netif_err(efx, drv, efx->net_dev,
 569                                   "failed opening device.\n");
 570                         goto fail2;
 571                 }
 572         }
 573
 574         memset(&efx_tests, 0, sizeof(efx_tests));
 575
 576         rc = efx_selftest(efx, &efx_tests, test->flags);
 577
 578         if (!already_up)
 579                 dev_close(efx->net_dev);
 580
 581         netif_dbg(efx, drv, efx->net_dev, "%s %sline self-tests\n",
 582                   rc == 0 ? "passed" : "failed",
 583                   (test->flags & ETH_TEST_FL_OFFLINE) ? "off" : "on");
 584
 585  fail2:
 586  fail1:
 587         /* Fill ethtool results structures */
 588         efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
 589         if (rc)
 590                 test->flags |= ETH_TEST_FL_FAILED;
 591 }
 592
 593 /* Restart autonegotiation */
 594 static int efx_ethtool_nway_reset(struct net_device *net_dev)
 595 {
 596         struct efx_nic *efx = netdev_priv(net_dev);
 597
 598         return mdio45_nway_restart(&efx->mdio);
 599 }
 600
 601 static u32 efx_ethtool_get_link(struct net_device *net_dev)
 602 {
 603         struct efx_nic *efx = netdev_priv(net_dev);
 604
 605         return efx->link_state.up;
 606 }
 607
 608 static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
 609 {
 610         struct efx_nic *efx = netdev_priv(net_dev);
 611         struct efx_spi_device *spi = efx->spi_eeprom;
 612
 613         if (!spi)
 614                 return 0;
 615         return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
 616                 min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
 617 }
 618
 619 static int efx_ethtool_get_eeprom(struct net_device *net_dev,
 620                                   struct ethtool_eeprom *eeprom, u8 *buf)
 621 {
 622         struct efx_nic *efx = netdev_priv(net_dev);
 623         struct efx_spi_device *spi = efx->spi_eeprom;
 624         size_t len;
 625         int rc;
 626
 627         rc = mutex_lock_interruptible(&efx->spi_lock);
 628         if (rc)
 629                 return rc;
 630         rc = falcon_spi_read(efx, spi,
 631                              eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 632                              eeprom->len, &len, buf);
 633         mutex_unlock(&efx->spi_lock);
 634
 635         eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
 636         eeprom->len = len;
 637         return rc;
 638 }
 639
 640 static int efx_ethtool_set_eeprom(struct net_device *net_dev,
 641                                   struct ethtool_eeprom *eeprom, u8 *buf)
 642 {
 643         struct efx_nic *efx = netdev_priv(net_dev);
 644         struct efx_spi_device *spi = efx->spi_eeprom;
 645         size_t len;
 646         int rc;
 647
 648         if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
 649                 return -EINVAL;
 650
 651         rc = mutex_lock_interruptible(&efx->spi_lock);
 652         if (rc)
 653                 return rc;
 654         rc = falcon_spi_write(efx, spi,
 655                               eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
 656                               eeprom->len, &len, buf);
 657         mutex_unlock(&efx->spi_lock);
 658
 659         eeprom->len = len;
 660         return rc;
 661 }
 662
 663 static int efx_ethtool_get_coalesce(struct net_device *net_dev,
 664                                     struct ethtool_coalesce *coalesce)
 665 {
 666         struct efx_nic *efx = netdev_priv(net_dev);
 667         struct efx_tx_queue *tx_queue;
 668         struct efx_channel *channel;
 669
 670         memset(coalesce, 0, sizeof(*coalesce));
 671
 672         /* Find lowest IRQ moderation across all used TX queues */
 673         coalesce->tx_coalesce_usecs_irq = ~((u32) 0);
 674         efx_for_each_tx_queue(tx_queue, efx) {
 675                 channel = tx_queue->channel;
 676                 if (channel->irq_moderation < coalesce->tx_coalesce_usecs_irq) {
 677                         if (channel->channel < efx->n_rx_channels)
 678                                 coalesce->tx_coalesce_usecs_irq =
 679                                         channel->irq_moderation;
 680                         else
 681                                 coalesce->tx_coalesce_usecs_irq = 0;
 682                 }
 683         }
 684
 685         coalesce->use_adaptive_rx_coalesce = efx->irq_rx_adaptive;
 686         coalesce->rx_coalesce_usecs_irq = efx->irq_rx_moderation;
 687
 688         coalesce->tx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 689         coalesce->rx_coalesce_usecs_irq *= EFX_IRQ_MOD_RESOLUTION;
 690
 691         return 0;
 692 }
 693
 694 /* Set coalescing parameters
 695  * The difficulties occur for shared channels
 696  */
 697 static int efx_ethtool_set_coalesce(struct net_device *net_dev,
 698                                     struct ethtool_coalesce *coalesce)
 699 {
 700         struct efx_nic *efx = netdev_priv(net_dev);
 701         struct efx_channel *channel;
 702         struct efx_tx_queue *tx_queue;
 703         unsigned tx_usecs, rx_usecs, adaptive;
 704
 705         if (coalesce->use_adaptive_tx_coalesce)
 706                 return -EOPNOTSUPP;
 707
 708         if (coalesce->rx_coalesce_usecs || coalesce->tx_coalesce_usecs) {
 709                 netif_err(efx, drv, efx->net_dev, "invalid coalescing setting. "
 710                           "Only rx/tx_coalesce_usecs_irq are supported\n");
 711                 return -EOPNOTSUPP;
 712         }
 713
 714         rx_usecs = coalesce->rx_coalesce_usecs_irq;
 715         tx_usecs = coalesce->tx_coalesce_usecs_irq;
 716         adaptive = coalesce->use_adaptive_rx_coalesce;
 717
 718         /* If the channel is shared only allow RX parameters to be set */
 719         efx_for_each_tx_queue(tx_queue, efx) {
 720                 if ((tx_queue->channel->channel < efx->n_rx_channels) &&
 721                     tx_usecs) {
 722                         netif_err(efx, drv, efx->net_dev, "Channel is shared. "
 723                                   "Only RX coalescing may be set\n");
 724                         return -EOPNOTSUPP;
 725                 }
 726         }
 727
 728         efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive);
 729         efx_for_each_channel(channel, efx)
 730                 efx->type->push_irq_moderation(channel);
 731
 732         return 0;
 733 }
 734
 735 static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 736                                       struct ethtool_pauseparam *pause)
 737 {
 738         struct efx_nic *efx = netdev_priv(net_dev);
 739         enum efx_fc_type wanted_fc, old_fc;
 740         u32 old_adv;
 741         bool reset;
 742         int rc = 0;
 743
 744         mutex_lock(&efx->mac_lock);
 745
 746         wanted_fc = ((pause->rx_pause ? EFX_FC_RX : 0) |
 747                      (pause->tx_pause ? EFX_FC_TX : 0) |
 748                      (pause->autoneg ? EFX_FC_AUTO : 0));
 749
 750         if ((wanted_fc & EFX_FC_TX) && !(wanted_fc & EFX_FC_RX)) {
 751                 netif_dbg(efx, drv, efx->net_dev,
 752                           "Flow control unsupported: tx ON rx OFF\n");
 753                 rc = -EINVAL;
 754                 goto out;
 755         }
 756
 757         if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
 758                 netif_dbg(efx, drv, efx->net_dev,
 759                           "Autonegotiation is disabled\n");
 760                 rc = -EINVAL;
 761                 goto out;
 762         }
 763
 764         /* TX flow control may automatically turn itself off if the
 765          * link partner (intermittently) stops responding to pause
 766          * frames. There isn't any indication that this has happened,
 767          * so the best we do is leave it up to the user to spot this
 768          * and fix it be cycling transmit flow control on this end. */
 769         reset = (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX);
 770         if (EFX_WORKAROUND_11482(efx) && reset) {
 771                 if (efx_nic_rev(efx) == EFX_REV_FALCON_B0) {
 772                         /* Recover by resetting the EM block */
 773                         falcon_stop_nic_stats(efx);
 774                         falcon_drain_tx_fifo(efx);
 775                         efx->mac_op->reconfigure(efx);
 776                         falcon_start_nic_stats(efx);
 777                 } else {
 778                         /* Schedule a reset to recover */
 779                         efx_schedule_reset(efx, RESET_TYPE_INVISIBLE);
 780                 }
 781         }
 782
 783         old_adv = efx->link_advertising;
 784         old_fc = efx->wanted_fc;
 785         efx_link_set_wanted_fc(efx, wanted_fc);
 786         if (efx->link_advertising != old_adv ||
 787             (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
 788                 rc = efx->phy_op->reconfigure(efx);
 789                 if (rc) {
 790                         netif_err(efx, drv, efx->net_dev,
 791                                   "Unable to advertise requested flow "
 792                                   "control setting\n");
 793                         goto out;
 794                 }
 795         }
 796
 797         /* Reconfigure the MAC. The PHY *may* generate a link state change event
 798          * if the user just changed the advertised capabilities, but there's no
 799          * harm doing this twice */
 800         efx->mac_op->reconfigure(efx);
 801
 802 out:
 803         mutex_unlock(&efx->mac_lock);
 804
 805         return rc;
 806 }
 807
 808 static void efx_ethtool_get_pauseparam(struct net_device *net_dev,
 809                                        struct ethtool_pauseparam *pause)
 810 {
 811         struct efx_nic *efx = netdev_priv(net_dev);
 812
 813         pause->rx_pause = !!(efx->wanted_fc & EFX_FC_RX);
 814         pause->tx_pause = !!(efx->wanted_fc & EFX_FC_TX);
 815         pause->autoneg = !!(efx->wanted_fc & EFX_FC_AUTO);
 816 }
 817
 818
 819 static void efx_ethtool_get_wol(struct net_device *net_dev,
 820                                 struct ethtool_wolinfo *wol)
 821 {
 822         struct efx_nic *efx = netdev_priv(net_dev);
 823         return efx->type->get_wol(efx, wol);
 824 }
 825
 826
 827 static int efx_ethtool_set_wol(struct net_device *net_dev,
 828                                struct ethtool_wolinfo *wol)
 829 {
 830         struct efx_nic *efx = netdev_priv(net_dev);
 831         return efx->type->set_wol(efx, wol->wolopts);
 832 }
 833
 834 extern int efx_ethtool_reset(struct net_device *net_dev, u32 *flags)
 835 {
 836         struct efx_nic *efx = netdev_priv(net_dev);
 837         enum reset_type method;
 838         enum {
 839                 ETH_RESET_EFX_INVISIBLE = (ETH_RESET_DMA | ETH_RESET_FILTER |
 840                                            ETH_RESET_OFFLOAD | ETH_RESET_MAC)
 841         };
 842
 843         /* Check for minimal reset flags */
 844         if ((*flags & ETH_RESET_EFX_INVISIBLE) != ETH_RESET_EFX_INVISIBLE)
 845                 return -EINVAL;
 846         *flags ^= ETH_RESET_EFX_INVISIBLE;
 847         method = RESET_TYPE_INVISIBLE;
 848
 849         if (*flags & ETH_RESET_PHY) {
 850                 *flags ^= ETH_RESET_PHY;
 851                 method = RESET_TYPE_ALL;
 852         }
 853
 854         if ((*flags & efx->type->reset_world_flags) ==
 855             efx->type->reset_world_flags) {
 856                 *flags ^= efx->type->reset_world_flags;
 857                 method = RESET_TYPE_WORLD;
 858         }
 859
 860         return efx_reset(efx, method);
 861 }
 862
 863 const struct ethtool_ops efx_ethtool_ops = {
 864         .get_settings           = efx_ethtool_get_settings,
 865         .set_settings           = efx_ethtool_set_settings,
 866         .get_drvinfo            = efx_ethtool_get_drvinfo,
 867         .get_regs_len           = efx_ethtool_get_regs_len,
 868         .get_regs               = efx_ethtool_get_regs,
 869         .get_msglevel           = efx_ethtool_get_msglevel,
 870         .set_msglevel           = efx_ethtool_set_msglevel,
 871         .nway_reset             = efx_ethtool_nway_reset,
 872         .get_link               = efx_ethtool_get_link,
 873         .get_eeprom_len         = efx_ethtool_get_eeprom_len,
 874         .get_eeprom             = efx_ethtool_get_eeprom,
 875         .set_eeprom             = efx_ethtool_set_eeprom,
 876         .get_coalesce           = efx_ethtool_get_coalesce,
 877         .set_coalesce           = efx_ethtool_set_coalesce,
 878         .get_pauseparam         = efx_ethtool_get_pauseparam,
 879         .set_pauseparam         = efx_ethtool_set_pauseparam,
 880         .get_rx_csum            = efx_ethtool_get_rx_csum,
 881         .set_rx_csum            = efx_ethtool_set_rx_csum,
 882         .get_tx_csum            = ethtool_op_get_tx_csum,
 883         /* Need to enable/disable IPv6 too */
 884         .set_tx_csum            = efx_ethtool_set_tx_csum,
 885         .get_sg                 = ethtool_op_get_sg,
 886         .set_sg                 = ethtool_op_set_sg,
 887         .get_tso                = ethtool_op_get_tso,
 888         /* Need to enable/disable TSO-IPv6 too */
 889         .set_tso                = efx_ethtool_set_tso,
 890         .get_flags              = ethtool_op_get_flags,
 891         .get_sset_count         = efx_ethtool_get_sset_count,
 892         .self_test              = efx_ethtool_self_test,
 893         .get_strings            = efx_ethtool_get_strings,
 894         .phys_id                = efx_ethtool_phys_id,
 895         .get_ethtool_stats      = efx_ethtool_get_stats,
 896         .get_wol                = efx_ethtool_get_wol,
 897         .set_wol                = efx_ethtool_set_wol,
 898         .reset                  = efx_ethtool_reset,
 899 };