drivers/net/ixgbevf/ethtool.c

   1 /*******************************************************************************
   2
   3   Intel 82599 Virtual Function driver
   4   Copyright(c) 1999 - 2009 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  24   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  25
  26 *******************************************************************************/
  27
  28 /* ethtool support for ixgbevf */
  29
  30 #include <linux/types.h>
  31 #include <linux/module.h>
  32 #include <linux/slab.h>
  33 #include <linux/pci.h>
  34 #include <linux/netdevice.h>
  35 #include <linux/ethtool.h>
  36 #include <linux/vmalloc.h>
  37 #include <linux/if_vlan.h>
  38 #include <linux/uaccess.h>
  39
  40 #include "ixgbevf.h"
  41
  42 #define IXGBE_ALL_RAR_ENTRIES 16
  43
  44 #ifdef ETHTOOL_GSTATS
  45 struct ixgbe_stats {
  46         char stat_string[ETH_GSTRING_LEN];
  47         int sizeof_stat;
  48         int stat_offset;
  49         int base_stat_offset;
  50         int saved_reset_offset;
  51 };
  52
  53 #define IXGBEVF_STAT(m, b, r)  sizeof(((struct ixgbevf_adapter *)0)->m), \
  54                             offsetof(struct ixgbevf_adapter, m),         \
  55                             offsetof(struct ixgbevf_adapter, b),         \
  56                             offsetof(struct ixgbevf_adapter, r)
  57 static struct ixgbe_stats ixgbe_gstrings_stats[] = {
  58         {"rx_packets", IXGBEVF_STAT(stats.vfgprc, stats.base_vfgprc,
  59                                     stats.saved_reset_vfgprc)},
  60         {"tx_packets", IXGBEVF_STAT(stats.vfgptc, stats.base_vfgptc,
  61                                     stats.saved_reset_vfgptc)},
  62         {"rx_bytes", IXGBEVF_STAT(stats.vfgorc, stats.base_vfgorc,
  63                                   stats.saved_reset_vfgorc)},
  64         {"tx_bytes", IXGBEVF_STAT(stats.vfgotc, stats.base_vfgotc,
  65                                   stats.saved_reset_vfgotc)},
  66         {"tx_busy", IXGBEVF_STAT(tx_busy, zero_base, zero_base)},
  67         {"multicast", IXGBEVF_STAT(stats.vfmprc, stats.base_vfmprc,
  68                                    stats.saved_reset_vfmprc)},
  69         {"rx_csum_offload_good", IXGBEVF_STAT(hw_csum_rx_good, zero_base,
  70                                               zero_base)},
  71         {"rx_csum_offload_errors", IXGBEVF_STAT(hw_csum_rx_error, zero_base,
  72                                                 zero_base)},
  73         {"tx_csum_offload_ctxt", IXGBEVF_STAT(hw_csum_tx_good, zero_base,
  74                                               zero_base)},
  75         {"rx_header_split", IXGBEVF_STAT(rx_hdr_split, zero_base, zero_base)},
  76 };
  77
  78 #define IXGBE_QUEUE_STATS_LEN 0
  79 #define IXGBE_GLOBAL_STATS_LEN  ARRAY_SIZE(ixgbe_gstrings_stats)
  80
  81 #define IXGBEVF_STATS_LEN (IXGBE_GLOBAL_STATS_LEN + IXGBE_QUEUE_STATS_LEN)
  82 #endif /* ETHTOOL_GSTATS */
  83 #ifdef ETHTOOL_TEST
  84 static const char ixgbe_gstrings_test[][ETH_GSTRING_LEN] = {
  85         "Register test  (offline)",
  86         "Link test   (on/offline)"
  87 };
  88 #define IXGBE_TEST_LEN (sizeof(ixgbe_gstrings_test) / ETH_GSTRING_LEN)
  89 #endif /* ETHTOOL_TEST */
  90
  91 static int ixgbevf_get_settings(struct net_device *netdev,
  92                                 struct ethtool_cmd *ecmd)
  93 {
  94         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
  95         struct ixgbe_hw *hw = &adapter->hw;
  96         u32 link_speed = 0;
  97         bool link_up;
  98
  99         ecmd->supported = SUPPORTED_10000baseT_Full;
 100         ecmd->autoneg = AUTONEG_DISABLE;
 101         ecmd->transceiver = XCVR_DUMMY1;
 102         ecmd->port = -1;
 103
 104         hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
 105
 106         if (link_up) {
 107                 ecmd->speed = (link_speed == IXGBE_LINK_SPEED_10GB_FULL) ?
 108                                SPEED_10000 : SPEED_1000;
 109                 ecmd->duplex = DUPLEX_FULL;
 110         } else {
 111                 ecmd->speed = -1;
 112                 ecmd->duplex = -1;
 113         }
 114
 115         return 0;
 116 }
 117
 118 static u32 ixgbevf_get_rx_csum(struct net_device *netdev)
 119 {
 120         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 121         return adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED;
 122 }
 123
 124 static int ixgbevf_set_rx_csum(struct net_device *netdev, u32 data)
 125 {
 126         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 127         if (data)
 128                 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
 129         else
 130                 adapter->flags &= ~IXGBE_FLAG_RX_CSUM_ENABLED;
 131
 132         if (netif_running(netdev)) {
 133                 if (!adapter->dev_closed)
 134                         ixgbevf_reinit_locked(adapter);
 135         } else {
 136                 ixgbevf_reset(adapter);
 137         }
 138
 139         return 0;
 140 }
 141
 142 static int ixgbevf_set_tso(struct net_device *netdev, u32 data)
 143 {
 144         if (data) {
 145                 netdev->features |= NETIF_F_TSO;
 146                 netdev->features |= NETIF_F_TSO6;
 147         } else {
 148                 netif_tx_stop_all_queues(netdev);
 149                 netdev->features &= ~NETIF_F_TSO;
 150                 netdev->features &= ~NETIF_F_TSO6;
 151                 netif_tx_start_all_queues(netdev);
 152         }
 153         return 0;
 154 }
 155
 156 static u32 ixgbevf_get_msglevel(struct net_device *netdev)
 157 {
 158         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 159         return adapter->msg_enable;
 160 }
 161
 162 static void ixgbevf_set_msglevel(struct net_device *netdev, u32 data)
 163 {
 164         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 165         adapter->msg_enable = data;
 166 }
 167
 168 #define IXGBE_GET_STAT(_A_, _R_) (_A_->stats._R_)
 169
 170 static char *ixgbevf_reg_names[] = {
 171         "IXGBE_VFCTRL",
 172         "IXGBE_VFSTATUS",
 173         "IXGBE_VFLINKS",
 174         "IXGBE_VFRXMEMWRAP",
 175         "IXGBE_VFRTIMER",
 176         "IXGBE_VTEICR",
 177         "IXGBE_VTEICS",
 178         "IXGBE_VTEIMS",
 179         "IXGBE_VTEIMC",
 180         "IXGBE_VTEIAC",
 181         "IXGBE_VTEIAM",
 182         "IXGBE_VTEITR",
 183         "IXGBE_VTIVAR",
 184         "IXGBE_VTIVAR_MISC",
 185         "IXGBE_VFRDBAL0",
 186         "IXGBE_VFRDBAL1",
 187         "IXGBE_VFRDBAH0",
 188         "IXGBE_VFRDBAH1",
 189         "IXGBE_VFRDLEN0",
 190         "IXGBE_VFRDLEN1",
 191         "IXGBE_VFRDH0",
 192         "IXGBE_VFRDH1",
 193         "IXGBE_VFRDT0",
 194         "IXGBE_VFRDT1",
 195         "IXGBE_VFRXDCTL0",
 196         "IXGBE_VFRXDCTL1",
 197         "IXGBE_VFSRRCTL0",
 198         "IXGBE_VFSRRCTL1",
 199         "IXGBE_VFPSRTYPE",
 200         "IXGBE_VFTDBAL0",
 201         "IXGBE_VFTDBAL1",
 202         "IXGBE_VFTDBAH0",
 203         "IXGBE_VFTDBAH1",
 204         "IXGBE_VFTDLEN0",
 205         "IXGBE_VFTDLEN1",
 206         "IXGBE_VFTDH0",
 207         "IXGBE_VFTDH1",
 208         "IXGBE_VFTDT0",
 209         "IXGBE_VFTDT1",
 210         "IXGBE_VFTXDCTL0",
 211         "IXGBE_VFTXDCTL1",
 212         "IXGBE_VFTDWBAL0",
 213         "IXGBE_VFTDWBAL1",
 214         "IXGBE_VFTDWBAH0",
 215         "IXGBE_VFTDWBAH1"
 216 };
 217
 218
 219 static int ixgbevf_get_regs_len(struct net_device *netdev)
 220 {
 221         return (ARRAY_SIZE(ixgbevf_reg_names)) * sizeof(u32);
 222 }
 223
 224 static void ixgbevf_get_regs(struct net_device *netdev,
 225                              struct ethtool_regs *regs,
 226                              void *p)
 227 {
 228         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 229         struct ixgbe_hw *hw = &adapter->hw;
 230         u32 *regs_buff = p;
 231         u32 regs_len = ixgbevf_get_regs_len(netdev);
 232         u8 i;
 233
 234         memset(p, 0, regs_len);
 235
 236         regs->version = (1 << 24) | hw->revision_id << 16 | hw->device_id;
 237
 238         /* General Registers */
 239         regs_buff[0] = IXGBE_READ_REG(hw, IXGBE_VFCTRL);
 240         regs_buff[1] = IXGBE_READ_REG(hw, IXGBE_VFSTATUS);
 241         regs_buff[2] = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
 242         regs_buff[3] = IXGBE_READ_REG(hw, IXGBE_VFRXMEMWRAP);
 243         regs_buff[4] = IXGBE_READ_REG(hw, IXGBE_VFRTIMER);
 244
 245         /* Interrupt */
 246         /* don't read EICR because it can clear interrupt causes, instead
 247          * read EICS which is a shadow but doesn't clear EICR */
 248         regs_buff[5] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
 249         regs_buff[6] = IXGBE_READ_REG(hw, IXGBE_VTEICS);
 250         regs_buff[7] = IXGBE_READ_REG(hw, IXGBE_VTEIMS);
 251         regs_buff[8] = IXGBE_READ_REG(hw, IXGBE_VTEIMC);
 252         regs_buff[9] = IXGBE_READ_REG(hw, IXGBE_VTEIAC);
 253         regs_buff[10] = IXGBE_READ_REG(hw, IXGBE_VTEIAM);
 254         regs_buff[11] = IXGBE_READ_REG(hw, IXGBE_VTEITR(0));
 255         regs_buff[12] = IXGBE_READ_REG(hw, IXGBE_VTIVAR(0));
 256         regs_buff[13] = IXGBE_READ_REG(hw, IXGBE_VTIVAR_MISC);
 257
 258         /* Receive DMA */
 259         for (i = 0; i < 2; i++)
 260                 regs_buff[14 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAL(i));
 261         for (i = 0; i < 2; i++)
 262                 regs_buff[16 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDBAH(i));
 263         for (i = 0; i < 2; i++)
 264                 regs_buff[18 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDLEN(i));
 265         for (i = 0; i < 2; i++)
 266                 regs_buff[20 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDH(i));
 267         for (i = 0; i < 2; i++)
 268                 regs_buff[22 + i] = IXGBE_READ_REG(hw, IXGBE_VFRDT(i));
 269         for (i = 0; i < 2; i++)
 270                 regs_buff[24 + i] = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
 271         for (i = 0; i < 2; i++)
 272                 regs_buff[26 + i] = IXGBE_READ_REG(hw, IXGBE_VFSRRCTL(i));
 273
 274         /* Receive */
 275         regs_buff[28] = IXGBE_READ_REG(hw, IXGBE_VFPSRTYPE);
 276
 277         /* Transmit */
 278         for (i = 0; i < 2; i++)
 279                 regs_buff[29 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAL(i));
 280         for (i = 0; i < 2; i++)
 281                 regs_buff[31 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAH(i));
 282         for (i = 0; i < 2; i++)
 283                 regs_buff[33 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDLEN(i));
 284         for (i = 0; i < 2; i++)
 285                 regs_buff[35 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDH(i));
 286         for (i = 0; i < 2; i++)
 287                 regs_buff[37 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDT(i));
 288         for (i = 0; i < 2; i++)
 289                 regs_buff[39 + i] = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
 290         for (i = 0; i < 2; i++)
 291                 regs_buff[41 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAL(i));
 292         for (i = 0; i < 2; i++)
 293                 regs_buff[43 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDWBAH(i));
 294
 295         for (i = 0; i < ARRAY_SIZE(ixgbevf_reg_names); i++)
 296                 hw_dbg(hw, "%s\t%8.8x\n", ixgbevf_reg_names[i], regs_buff[i]);
 297 }
 298
 299 static void ixgbevf_get_drvinfo(struct net_device *netdev,
 300                                 struct ethtool_drvinfo *drvinfo)
 301 {
 302         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 303
 304         strlcpy(drvinfo->driver, ixgbevf_driver_name, 32);
 305         strlcpy(drvinfo->version, ixgbevf_driver_version, 32);
 306
 307         strlcpy(drvinfo->fw_version, "N/A", 4);
 308         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
 309 }
 310
 311 static void ixgbevf_get_ringparam(struct net_device *netdev,
 312                                   struct ethtool_ringparam *ring)
 313 {
 314         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 315         struct ixgbevf_ring *tx_ring = adapter->tx_ring;
 316         struct ixgbevf_ring *rx_ring = adapter->rx_ring;
 317
 318         ring->rx_max_pending = IXGBEVF_MAX_RXD;
 319         ring->tx_max_pending = IXGBEVF_MAX_TXD;
 320         ring->rx_mini_max_pending = 0;
 321         ring->rx_jumbo_max_pending = 0;
 322         ring->rx_pending = rx_ring->count;
 323         ring->tx_pending = tx_ring->count;
 324         ring->rx_mini_pending = 0;
 325         ring->rx_jumbo_pending = 0;
 326 }
 327
 328 static int ixgbevf_set_ringparam(struct net_device *netdev,
 329                                  struct ethtool_ringparam *ring)
 330 {
 331         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 332         struct ixgbevf_ring *tx_ring = NULL, *rx_ring = NULL;
 333         int i, err;
 334         u32 new_rx_count, new_tx_count;
 335         bool need_tx_update = false;
 336         bool need_rx_update = false;
 337
 338         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 339                 return -EINVAL;
 340
 341         new_rx_count = max(ring->rx_pending, (u32)IXGBEVF_MIN_RXD);
 342         new_rx_count = min(new_rx_count, (u32)IXGBEVF_MAX_RXD);
 343         new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);
 344
 345         new_tx_count = max(ring->tx_pending, (u32)IXGBEVF_MIN_TXD);
 346         new_tx_count = min(new_tx_count, (u32)IXGBEVF_MAX_TXD);
 347         new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);
 348
 349         if ((new_tx_count == adapter->tx_ring->count) &&
 350             (new_rx_count == adapter->rx_ring->count)) {
 351                 /* nothing to do */
 352                 return 0;
 353         }
 354
 355         while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
 356                 msleep(1);
 357
 358         if (new_tx_count != adapter->tx_ring_count) {
 359                 tx_ring = kcalloc(adapter->num_tx_queues,
 360                                   sizeof(struct ixgbevf_ring), GFP_KERNEL);
 361                 if (!tx_ring) {
 362                         err = -ENOMEM;
 363                         goto err_setup;
 364                 }
 365                 memcpy(tx_ring, adapter->tx_ring,
 366                        adapter->num_tx_queues * sizeof(struct ixgbevf_ring));
 367                 for (i = 0; i < adapter->num_tx_queues; i++) {
 368                         tx_ring[i].count = new_tx_count;
 369                         err = ixgbevf_setup_tx_resources(adapter,
 370                                                          &tx_ring[i]);
 371                         if (err) {
 372                                 while (i) {
 373                                         i--;
 374                                         ixgbevf_free_tx_resources(adapter,
 375                                                                   &tx_ring[i]);
 376                                 }
 377                                 kfree(tx_ring);
 378                                 goto err_setup;
 379                         }
 380                         tx_ring[i].v_idx = adapter->tx_ring[i].v_idx;
 381                 }
 382                 need_tx_update = true;
 383         }
 384
 385         if (new_rx_count != adapter->rx_ring_count) {
 386                 rx_ring = kcalloc(adapter->num_rx_queues,
 387                                   sizeof(struct ixgbevf_ring), GFP_KERNEL);
 388                 if ((!rx_ring) && (need_tx_update)) {
 389                         err = -ENOMEM;
 390                         goto err_rx_setup;
 391                 }
 392                 memcpy(rx_ring, adapter->rx_ring,
 393                        adapter->num_rx_queues * sizeof(struct ixgbevf_ring));
 394                 for (i = 0; i < adapter->num_rx_queues; i++) {
 395                         rx_ring[i].count = new_rx_count;
 396                         err = ixgbevf_setup_rx_resources(adapter,
 397                                                          &rx_ring[i]);
 398                         if (err) {
 399                                 while (i) {
 400                                         i--;
 401                                         ixgbevf_free_rx_resources(adapter,
 402                                                                   &rx_ring[i]);
 403                                 }
 404                                 kfree(rx_ring);
 405                                 goto err_rx_setup;
 406                         }
 407                         rx_ring[i].v_idx = adapter->rx_ring[i].v_idx;
 408                 }
 409                 need_rx_update = true;
 410         }
 411
 412 err_rx_setup:
 413         /* if rings need to be updated, here's the place to do it in one shot */
 414         if (need_tx_update || need_rx_update) {
 415                 if (netif_running(netdev))
 416                         ixgbevf_down(adapter);
 417         }
 418
 419         /* tx */
 420         if (need_tx_update) {
 421                 kfree(adapter->tx_ring);
 422                 adapter->tx_ring = tx_ring;
 423                 tx_ring = NULL;
 424                 adapter->tx_ring_count = new_tx_count;
 425         }
 426
 427         /* rx */
 428         if (need_rx_update) {
 429                 kfree(adapter->rx_ring);
 430                 adapter->rx_ring = rx_ring;
 431                 rx_ring = NULL;
 432                 adapter->rx_ring_count = new_rx_count;
 433         }
 434
 435         /* success! */
 436         err = 0;
 437         if (netif_running(netdev))
 438                 ixgbevf_up(adapter);
 439
 440 err_setup:
 441         clear_bit(__IXGBEVF_RESETTING, &adapter->state);
 442         return err;
 443 }
 444
 445 static int ixgbevf_get_sset_count(struct net_device *dev, int stringset)
 446 {
 447        switch (stringset) {
 448        case ETH_SS_TEST:
 449                return IXGBE_TEST_LEN;
 450        case ETH_SS_STATS:
 451                return IXGBE_GLOBAL_STATS_LEN;
 452        default:
 453                return -EINVAL;
 454        }
 455 }
 456
 457 static void ixgbevf_get_ethtool_stats(struct net_device *netdev,
 458                                       struct ethtool_stats *stats, u64 *data)
 459 {
 460         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 461         int i;
 462
 463         ixgbevf_update_stats(adapter);
 464         for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {
 465                 char *p = (char *)adapter +
 466                         ixgbe_gstrings_stats[i].stat_offset;
 467                 char *b = (char *)adapter +
 468                         ixgbe_gstrings_stats[i].base_stat_offset;
 469                 char *r = (char *)adapter +
 470                         ixgbe_gstrings_stats[i].saved_reset_offset;
 471                 data[i] = ((ixgbe_gstrings_stats[i].sizeof_stat ==
 472                             sizeof(u64)) ? *(u64 *)p : *(u32 *)p) -
 473                           ((ixgbe_gstrings_stats[i].sizeof_stat ==
 474                             sizeof(u64)) ? *(u64 *)b : *(u32 *)b) +
 475                           ((ixgbe_gstrings_stats[i].sizeof_stat ==
 476                             sizeof(u64)) ? *(u64 *)r : *(u32 *)r);
 477         }
 478 }
 479
 480 static void ixgbevf_get_strings(struct net_device *netdev, u32 stringset,
 481                                 u8 *data)
 482 {
 483         char *p = (char *)data;
 484         int i;
 485
 486         switch (stringset) {
 487         case ETH_SS_TEST:
 488                 memcpy(data, *ixgbe_gstrings_test,
 489                        IXGBE_TEST_LEN * ETH_GSTRING_LEN);
 490                 break;
 491         case ETH_SS_STATS:
 492                 for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {
 493                         memcpy(p, ixgbe_gstrings_stats[i].stat_string,
 494                                ETH_GSTRING_LEN);
 495                         p += ETH_GSTRING_LEN;
 496                 }
 497                 break;
 498         }
 499 }
 500
 501 static int ixgbevf_link_test(struct ixgbevf_adapter *adapter, u64 *data)
 502 {
 503         struct ixgbe_hw *hw = &adapter->hw;
 504         bool link_up;
 505         u32 link_speed = 0;
 506         *data = 0;
 507
 508         hw->mac.ops.check_link(hw, &link_speed, &link_up, true);
 509         if (!link_up)
 510                 *data = 1;
 511
 512         return *data;
 513 }
 514
 515 /* ethtool register test data */
 516 struct ixgbevf_reg_test {
 517         u16 reg;
 518         u8  array_len;
 519         u8  test_type;
 520         u32 mask;
 521         u32 write;
 522 };
 523
 524 /* In the hardware, registers are laid out either singly, in arrays
 525  * spaced 0x40 bytes apart, or in contiguous tables.  We assume
 526  * most tests take place on arrays or single registers (handled
 527  * as a single-element array) and special-case the tables.
 528  * Table tests are always pattern tests.
 529  *
 530  * We also make provision for some required setup steps by specifying
 531  * registers to be written without any read-back testing.
 532  */
 533
 534 #define PATTERN_TEST    1
 535 #define SET_READ_TEST   2
 536 #define WRITE_NO_TEST   3
 537 #define TABLE32_TEST    4
 538 #define TABLE64_TEST_LO 5
 539 #define TABLE64_TEST_HI 6
 540
 541 /* default VF register test */
 542 static struct ixgbevf_reg_test reg_test_vf[] = {
 543         { IXGBE_VFRDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFF80 },
 544         { IXGBE_VFRDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
 545         { IXGBE_VFRDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFFFF },
 546         { IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, IXGBE_RXDCTL_ENABLE },
 547         { IXGBE_VFRDT(0), 2, PATTERN_TEST, 0x0000FFFF, 0x0000FFFF },
 548         { IXGBE_VFRXDCTL(0), 2, WRITE_NO_TEST, 0, 0 },
 549         { IXGBE_VFTDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
 550         { IXGBE_VFTDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
 551         { IXGBE_VFTDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFF80 },
 552         { 0, 0, 0, 0 }
 553 };
 554
 555 #define REG_PATTERN_TEST(R, M, W)                                             \
 556 {                                                                             \
 557         u32 pat, val, before;                                                 \
 558         const u32 _test[] = {0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF}; \
 559         for (pat = 0; pat < ARRAY_SIZE(_test); pat++) {                       \
 560                 before = readl(adapter->hw.hw_addr + R);                      \
 561                 writel((_test[pat] & W), (adapter->hw.hw_addr + R));          \
 562                 val = readl(adapter->hw.hw_addr + R);                         \
 563                 if (val != (_test[pat] & W & M)) {                            \
 564                         hw_dbg(&adapter->hw,                                  \
 565                         "pattern test reg %04X failed: got "                  \
 566                         "0x%08X expected 0x%08X\n",                           \
 567                         R, val, (_test[pat] & W & M));                        \
 568                         *data = R;                                            \
 569                         writel(before, adapter->hw.hw_addr + R);              \
 570                         return 1;                                             \
 571                 }                                                             \
 572                 writel(before, adapter->hw.hw_addr + R);                      \
 573         }                                                                     \
 574 }
 575
 576 #define REG_SET_AND_CHECK(R, M, W)                                            \
 577 {                                                                             \
 578         u32 val, before;                                                      \
 579         before = readl(adapter->hw.hw_addr + R);                              \
 580         writel((W & M), (adapter->hw.hw_addr + R));                           \
 581         val = readl(adapter->hw.hw_addr + R);                                 \
 582         if ((W & M) != (val & M)) {                                           \
 583                 printk(KERN_ERR "set/check reg %04X test failed: got 0x%08X " \
 584                                  "expected 0x%08X\n", R, (val & M), (W & M)); \
 585                 *data = R;                                                    \
 586                 writel(before, (adapter->hw.hw_addr + R));                    \
 587                 return 1;                                                     \
 588         }                                                                     \
 589         writel(before, (adapter->hw.hw_addr + R));                            \
 590 }
 591
 592 static int ixgbevf_reg_test(struct ixgbevf_adapter *adapter, u64 *data)
 593 {
 594         struct ixgbevf_reg_test *test;
 595         u32 i;
 596
 597         test = reg_test_vf;
 598
 599         /*
 600          * Perform the register test, looping through the test table
 601          * until we either fail or reach the null entry.
 602          */
 603         while (test->reg) {
 604                 for (i = 0; i < test->array_len; i++) {
 605                         switch (test->test_type) {
 606                         case PATTERN_TEST:
 607                                 REG_PATTERN_TEST(test->reg + (i * 0x40),
 608                                                 test->mask,
 609                                                 test->write);
 610                                 break;
 611                         case SET_READ_TEST:
 612                                 REG_SET_AND_CHECK(test->reg + (i * 0x40),
 613                                                 test->mask,
 614                                                 test->write);
 615                                 break;
 616                         case WRITE_NO_TEST:
 617                                 writel(test->write,
 618                                        (adapter->hw.hw_addr + test->reg)
 619                                        + (i * 0x40));
 620                                 break;
 621                         case TABLE32_TEST:
 622                                 REG_PATTERN_TEST(test->reg + (i * 4),
 623                                                 test->mask,
 624                                                 test->write);
 625                                 break;
 626                         case TABLE64_TEST_LO:
 627                                 REG_PATTERN_TEST(test->reg + (i * 8),
 628                                                 test->mask,
 629                                                 test->write);
 630                                 break;
 631                         case TABLE64_TEST_HI:
 632                                 REG_PATTERN_TEST((test->reg + 4) + (i * 8),
 633                                                 test->mask,
 634                                                 test->write);
 635                                 break;
 636                         }
 637                 }
 638                 test++;
 639         }
 640
 641         *data = 0;
 642         return *data;
 643 }
 644
 645 static void ixgbevf_diag_test(struct net_device *netdev,
 646                               struct ethtool_test *eth_test, u64 *data)
 647 {
 648         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 649         bool if_running = netif_running(netdev);
 650
 651         set_bit(__IXGBEVF_TESTING, &adapter->state);
 652         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
 653                 /* Offline tests */
 654
 655                 hw_dbg(&adapter->hw, "offline testing starting\n");
 656
 657                 /* Link test performed before hardware reset so autoneg doesn't
 658                  * interfere with test result */
 659                 if (ixgbevf_link_test(adapter, &data[1]))
 660                         eth_test->flags |= ETH_TEST_FL_FAILED;
 661
 662                 if (if_running)
 663                         /* indicate we're in test mode */
 664                         dev_close(netdev);
 665                 else
 666                         ixgbevf_reset(adapter);
 667
 668                 hw_dbg(&adapter->hw, "register testing starting\n");
 669                 if (ixgbevf_reg_test(adapter, &data[0]))
 670                         eth_test->flags |= ETH_TEST_FL_FAILED;
 671
 672                 ixgbevf_reset(adapter);
 673
 674                 clear_bit(__IXGBEVF_TESTING, &adapter->state);
 675                 if (if_running)
 676                         dev_open(netdev);
 677         } else {
 678                 hw_dbg(&adapter->hw, "online testing starting\n");
 679                 /* Online tests */
 680                 if (ixgbevf_link_test(adapter, &data[1]))
 681                         eth_test->flags |= ETH_TEST_FL_FAILED;
 682
 683                 /* Online tests aren't run; pass by default */
 684                 data[0] = 0;
 685
 686                 clear_bit(__IXGBEVF_TESTING, &adapter->state);
 687         }
 688         msleep_interruptible(4 * 1000);
 689 }
 690
 691 static int ixgbevf_nway_reset(struct net_device *netdev)
 692 {
 693         struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 694
 695         if (netif_running(netdev)) {
 696                 if (!adapter->dev_closed)
 697                         ixgbevf_reinit_locked(adapter);
 698         }
 699
 700         return 0;
 701 }
 702
 703 static struct ethtool_ops ixgbevf_ethtool_ops = {
 704         .get_settings           = ixgbevf_get_settings,
 705         .get_drvinfo            = ixgbevf_get_drvinfo,
 706         .get_regs_len           = ixgbevf_get_regs_len,
 707         .get_regs               = ixgbevf_get_regs,
 708         .nway_reset             = ixgbevf_nway_reset,
 709         .get_link               = ethtool_op_get_link,
 710         .get_ringparam          = ixgbevf_get_ringparam,
 711         .set_ringparam          = ixgbevf_set_ringparam,
 712         .get_rx_csum            = ixgbevf_get_rx_csum,
 713         .set_rx_csum            = ixgbevf_set_rx_csum,
 714         .get_tx_csum            = ethtool_op_get_tx_csum,
 715         .set_tx_csum            = ethtool_op_set_tx_ipv6_csum,
 716         .get_sg                 = ethtool_op_get_sg,
 717         .set_sg                 = ethtool_op_set_sg,
 718         .get_msglevel           = ixgbevf_get_msglevel,
 719         .set_msglevel           = ixgbevf_set_msglevel,
 720         .get_tso                = ethtool_op_get_tso,
 721         .set_tso                = ixgbevf_set_tso,
 722         .self_test              = ixgbevf_diag_test,
 723         .get_sset_count         = ixgbevf_get_sset_count,
 724         .get_strings            = ixgbevf_get_strings,
 725         .get_ethtool_stats      = ixgbevf_get_ethtool_stats,
 726 };
 727
 728 void ixgbevf_set_ethtool_ops(struct net_device *netdev)
 729 {
 730         SET_ETHTOOL_OPS(netdev, &ixgbevf_ethtool_ops);
 731 }