drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_ethtool.c

   1 /*
   2  * Copyright (C) 1999 - 2010 Intel Corporation.
   3  * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
   4  *
   5  * This code was derived from the Intel e1000e Linux driver.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19 #include "pch_gbe.h"
  20 #include "pch_gbe_api.h"
  21
  22 /**
  23  * pch_gbe_stats - Stats item information
  24  */
  25 struct pch_gbe_stats {
  26         char string[ETH_GSTRING_LEN];
  27         size_t size;
  28         size_t offset;
  29 };
  30
  31 #define PCH_GBE_STAT(m)                                         \
  32 {                                                               \
  33         .string = #m,                                           \
  34         .size = FIELD_SIZEOF(struct pch_gbe_hw_stats, m),       \
  35         .offset = offsetof(struct pch_gbe_hw_stats, m),         \
  36 }
  37
  38 /**
  39  * pch_gbe_gstrings_stats - ethtool information status name list
  40  */
  41 static const struct pch_gbe_stats pch_gbe_gstrings_stats[] = {
  42         PCH_GBE_STAT(rx_packets),
  43         PCH_GBE_STAT(tx_packets),
  44         PCH_GBE_STAT(rx_bytes),
  45         PCH_GBE_STAT(tx_bytes),
  46         PCH_GBE_STAT(rx_errors),
  47         PCH_GBE_STAT(tx_errors),
  48         PCH_GBE_STAT(rx_dropped),
  49         PCH_GBE_STAT(tx_dropped),
  50         PCH_GBE_STAT(multicast),
  51         PCH_GBE_STAT(collisions),
  52         PCH_GBE_STAT(rx_crc_errors),
  53         PCH_GBE_STAT(rx_frame_errors),
  54         PCH_GBE_STAT(rx_alloc_buff_failed),
  55         PCH_GBE_STAT(tx_length_errors),
  56         PCH_GBE_STAT(tx_aborted_errors),
  57         PCH_GBE_STAT(tx_carrier_errors),
  58         PCH_GBE_STAT(tx_timeout_count),
  59         PCH_GBE_STAT(tx_restart_count),
  60         PCH_GBE_STAT(intr_rx_dsc_empty_count),
  61         PCH_GBE_STAT(intr_rx_frame_err_count),
  62         PCH_GBE_STAT(intr_rx_fifo_err_count),
  63         PCH_GBE_STAT(intr_rx_dma_err_count),
  64         PCH_GBE_STAT(intr_tx_fifo_err_count),
  65         PCH_GBE_STAT(intr_tx_dma_err_count),
  66         PCH_GBE_STAT(intr_tcpip_err_count)
  67 };
  68
  69 #define PCH_GBE_QUEUE_STATS_LEN 0
  70 #define PCH_GBE_GLOBAL_STATS_LEN        ARRAY_SIZE(pch_gbe_gstrings_stats)
  71 #define PCH_GBE_STATS_LEN (PCH_GBE_GLOBAL_STATS_LEN + PCH_GBE_QUEUE_STATS_LEN)
  72
  73 #define PCH_GBE_MAC_REGS_LEN    (sizeof(struct pch_gbe_regs) / 4)
  74 #define PCH_GBE_REGS_LEN        (PCH_GBE_MAC_REGS_LEN + PCH_GBE_PHY_REGS_LEN)
  75 /**
  76  * pch_gbe_get_link_ksettings - Get device-specific settings
  77  * @netdev: Network interface device structure
  78  * @ecmd:   Ethtool command
  79  * Returns:
  80  *      0:                      Successful.
  81  *      Negative value:         Failed.
  82  */
  83 static int pch_gbe_get_link_ksettings(struct net_device *netdev,
  84                                       struct ethtool_link_ksettings *ecmd)
  85 {
  86         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
  87         u32 supported, advertising;
  88
  89         mii_ethtool_get_link_ksettings(&adapter->mii, ecmd);
  90
  91         ethtool_convert_link_mode_to_legacy_u32(&supported,
  92                                                 ecmd->link_modes.supported);
  93         ethtool_convert_link_mode_to_legacy_u32(&advertising,
  94                                                 ecmd->link_modes.advertising);
  95
  96         supported &= ~(SUPPORTED_TP | SUPPORTED_1000baseT_Half);
  97         advertising &= ~(ADVERTISED_TP | ADVERTISED_1000baseT_Half);
  98
  99         ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported,
 100                                                 supported);
 101         ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.advertising,
 102                                                 advertising);
 103
 104         if (!netif_carrier_ok(adapter->netdev))
 105                 ecmd->base.speed = SPEED_UNKNOWN;
 106
 107         return 0;
 108 }
 109
 110 /**
 111  * pch_gbe_set_link_ksettings - Set device-specific settings
 112  * @netdev: Network interface device structure
 113  * @ecmd:   Ethtool command
 114  * Returns:
 115  *      0:                      Successful.
 116  *      Negative value:         Failed.
 117  */
 118 static int pch_gbe_set_link_ksettings(struct net_device *netdev,
 119                                       const struct ethtool_link_ksettings *ecmd)
 120 {
 121         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 122         struct pch_gbe_hw *hw = &adapter->hw;
 123         struct ethtool_link_ksettings copy_ecmd;
 124         u32 speed = ecmd->base.speed;
 125         u32 advertising;
 126         int ret;
 127
 128         pch_gbe_hal_write_phy_reg(hw, MII_BMCR, BMCR_RESET);
 129
 130         memcpy(&copy_ecmd, ecmd, sizeof(*ecmd));
 131
 132         /* when set_settings() is called with a ethtool_cmd previously
 133          * filled by get_settings() on a down link, speed is -1: */
 134         if (speed == UINT_MAX) {
 135                 speed = SPEED_1000;
 136                 copy_ecmd.base.speed = speed;
 137                 copy_ecmd.base.duplex = DUPLEX_FULL;
 138         }
 139         ret = mii_ethtool_set_link_ksettings(&adapter->mii, &copy_ecmd);
 140         if (ret) {
 141                 netdev_err(netdev, "Error: mii_ethtool_set_link_ksettings\n");
 142                 return ret;
 143         }
 144         hw->mac.link_speed = speed;
 145         hw->mac.link_duplex = copy_ecmd.base.duplex;
 146         ethtool_convert_link_mode_to_legacy_u32(
 147                 &advertising, copy_ecmd.link_modes.advertising);
 148         hw->phy.autoneg_advertised = advertising;
 149         hw->mac.autoneg = copy_ecmd.base.autoneg;
 150
 151         /* reset the link */
 152         if (netif_running(adapter->netdev)) {
 153                 pch_gbe_down(adapter);
 154                 ret = pch_gbe_up(adapter);
 155         } else {
 156                 pch_gbe_reset(adapter);
 157         }
 158         return ret;
 159 }
 160
 161 /**
 162  * pch_gbe_get_regs_len - Report the size of device registers
 163  * @netdev: Network interface device structure
 164  * Returns: the size of device registers.
 165  */
 166 static int pch_gbe_get_regs_len(struct net_device *netdev)
 167 {
 168         return PCH_GBE_REGS_LEN * (int)sizeof(u32);
 169 }
 170
 171 /**
 172  * pch_gbe_get_drvinfo - Report driver information
 173  * @netdev:  Network interface device structure
 174  * @drvinfo: Driver information structure
 175  */
 176 static void pch_gbe_get_drvinfo(struct net_device *netdev,
 177                                  struct ethtool_drvinfo *drvinfo)
 178 {
 179         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 180
 181         strlcpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
 182         strlcpy(drvinfo->version, pch_driver_version, sizeof(drvinfo->version));
 183         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
 184                 sizeof(drvinfo->bus_info));
 185 }
 186
 187 /**
 188  * pch_gbe_get_regs - Get device registers
 189  * @netdev: Network interface device structure
 190  * @regs:   Ethtool register structure
 191  * @p:      Buffer pointer of read device register date
 192  */
 193 static void pch_gbe_get_regs(struct net_device *netdev,
 194                                 struct ethtool_regs *regs, void *p)
 195 {
 196         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 197         struct pch_gbe_hw *hw = &adapter->hw;
 198         struct pci_dev *pdev = adapter->pdev;
 199         u32 *regs_buff = p;
 200         u16 i, tmp;
 201
 202         regs->version = 0x1000000 | (__u32)pdev->revision << 16 | pdev->device;
 203         for (i = 0; i < PCH_GBE_MAC_REGS_LEN; i++)
 204                 *regs_buff++ = ioread32(&hw->reg->INT_ST + i);
 205         /* PHY register */
 206         for (i = 0; i < PCH_GBE_PHY_REGS_LEN; i++) {
 207                 pch_gbe_hal_read_phy_reg(&adapter->hw, i, &tmp);
 208                 *regs_buff++ = tmp;
 209         }
 210 }
 211
 212 /**
 213  * pch_gbe_get_wol - Report whether Wake-on-Lan is enabled
 214  * @netdev: Network interface device structure
 215  * @wol:    Wake-on-Lan information
 216  */
 217 static void pch_gbe_get_wol(struct net_device *netdev,
 218                                 struct ethtool_wolinfo *wol)
 219 {
 220         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 221
 222         wol->supported = WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | WAKE_MAGIC;
 223         wol->wolopts = 0;
 224
 225         if ((adapter->wake_up_evt & PCH_GBE_WLC_IND))
 226                 wol->wolopts |= WAKE_UCAST;
 227         if ((adapter->wake_up_evt & PCH_GBE_WLC_MLT))
 228                 wol->wolopts |= WAKE_MCAST;
 229         if ((adapter->wake_up_evt & PCH_GBE_WLC_BR))
 230                 wol->wolopts |= WAKE_BCAST;
 231         if ((adapter->wake_up_evt & PCH_GBE_WLC_MP))
 232                 wol->wolopts |= WAKE_MAGIC;
 233 }
 234
 235 /**
 236  * pch_gbe_set_wol - Turn Wake-on-Lan on or off
 237  * @netdev: Network interface device structure
 238  * @wol:    Pointer of wake-on-Lan information straucture
 239  * Returns:
 240  *      0:                      Successful.
 241  *      Negative value:         Failed.
 242  */
 243 static int pch_gbe_set_wol(struct net_device *netdev,
 244                                 struct ethtool_wolinfo *wol)
 245 {
 246         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 247
 248         if ((wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE)))
 249                 return -EOPNOTSUPP;
 250         /* these settings will always override what we currently have */
 251         adapter->wake_up_evt = 0;
 252
 253         if ((wol->wolopts & WAKE_UCAST))
 254                 adapter->wake_up_evt |= PCH_GBE_WLC_IND;
 255         if ((wol->wolopts & WAKE_MCAST))
 256                 adapter->wake_up_evt |= PCH_GBE_WLC_MLT;
 257         if ((wol->wolopts & WAKE_BCAST))
 258                 adapter->wake_up_evt |= PCH_GBE_WLC_BR;
 259         if ((wol->wolopts & WAKE_MAGIC))
 260                 adapter->wake_up_evt |= PCH_GBE_WLC_MP;
 261         return 0;
 262 }
 263
 264 /**
 265  * pch_gbe_nway_reset - Restart autonegotiation
 266  * @netdev: Network interface device structure
 267  * Returns:
 268  *      0:                      Successful.
 269  *      Negative value:         Failed.
 270  */
 271 static int pch_gbe_nway_reset(struct net_device *netdev)
 272 {
 273         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 274
 275         return mii_nway_restart(&adapter->mii);
 276 }
 277
 278 /**
 279  * pch_gbe_get_ringparam - Report ring sizes
 280  * @netdev:  Network interface device structure
 281  * @ring:    Ring param structure
 282  */
 283 static void pch_gbe_get_ringparam(struct net_device *netdev,
 284                                         struct ethtool_ringparam *ring)
 285 {
 286         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 287         struct pch_gbe_tx_ring *txdr = adapter->tx_ring;
 288         struct pch_gbe_rx_ring *rxdr = adapter->rx_ring;
 289
 290         ring->rx_max_pending = PCH_GBE_MAX_RXD;
 291         ring->tx_max_pending = PCH_GBE_MAX_TXD;
 292         ring->rx_pending = rxdr->count;
 293         ring->tx_pending = txdr->count;
 294 }
 295
 296 /**
 297  * pch_gbe_set_ringparam - Set ring sizes
 298  * @netdev:  Network interface device structure
 299  * @ring:    Ring param structure
 300  * Returns
 301  *      0:                      Successful.
 302  *      Negative value:         Failed.
 303  */
 304 static int pch_gbe_set_ringparam(struct net_device *netdev,
 305                                         struct ethtool_ringparam *ring)
 306 {
 307         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 308         struct pch_gbe_tx_ring *txdr, *tx_old;
 309         struct pch_gbe_rx_ring *rxdr, *rx_old;
 310         int tx_ring_size, rx_ring_size;
 311         int err = 0;
 312
 313         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 314                 return -EINVAL;
 315         tx_ring_size = (int)sizeof(struct pch_gbe_tx_ring);
 316         rx_ring_size = (int)sizeof(struct pch_gbe_rx_ring);
 317
 318         if ((netif_running(adapter->netdev)))
 319                 pch_gbe_down(adapter);
 320         tx_old = adapter->tx_ring;
 321         rx_old = adapter->rx_ring;
 322
 323         txdr = kzalloc(tx_ring_size, GFP_KERNEL);
 324         if (!txdr) {
 325                 err = -ENOMEM;
 326                 goto err_alloc_tx;
 327         }
 328         rxdr = kzalloc(rx_ring_size, GFP_KERNEL);
 329         if (!rxdr) {
 330                 err = -ENOMEM;
 331                 goto err_alloc_rx;
 332         }
 333         adapter->tx_ring = txdr;
 334         adapter->rx_ring = rxdr;
 335
 336         rxdr->count =
 337                 clamp_val(ring->rx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD);
 338         rxdr->count = roundup(rxdr->count, PCH_GBE_RX_DESC_MULTIPLE);
 339
 340         txdr->count =
 341                 clamp_val(ring->tx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD);
 342         txdr->count = roundup(txdr->count, PCH_GBE_TX_DESC_MULTIPLE);
 343
 344         if ((netif_running(adapter->netdev))) {
 345                 /* Try to get new resources before deleting old */
 346                 err = pch_gbe_setup_rx_resources(adapter, adapter->rx_ring);
 347                 if (err)
 348                         goto err_setup_rx;
 349                 err = pch_gbe_setup_tx_resources(adapter, adapter->tx_ring);
 350                 if (err)
 351                         goto err_setup_tx;
 352                 /* save the new, restore the old in order to free it,
 353                  * then restore the new back again */
 354 #ifdef RINGFREE
 355                 adapter->rx_ring = rx_old;
 356                 adapter->tx_ring = tx_old;
 357                 pch_gbe_free_rx_resources(adapter, adapter->rx_ring);
 358                 pch_gbe_free_tx_resources(adapter, adapter->tx_ring);
 359                 kfree(tx_old);
 360                 kfree(rx_old);
 361                 adapter->rx_ring = rxdr;
 362                 adapter->tx_ring = txdr;
 363 #else
 364                 pch_gbe_free_rx_resources(adapter, rx_old);
 365                 pch_gbe_free_tx_resources(adapter, tx_old);
 366                 kfree(tx_old);
 367                 kfree(rx_old);
 368                 adapter->rx_ring = rxdr;
 369                 adapter->tx_ring = txdr;
 370 #endif
 371                 err = pch_gbe_up(adapter);
 372         }
 373         return err;
 374
 375 err_setup_tx:
 376         pch_gbe_free_rx_resources(adapter, adapter->rx_ring);
 377 err_setup_rx:
 378         adapter->rx_ring = rx_old;
 379         adapter->tx_ring = tx_old;
 380         kfree(rxdr);
 381 err_alloc_rx:
 382         kfree(txdr);
 383 err_alloc_tx:
 384         if (netif_running(adapter->netdev))
 385                 pch_gbe_up(adapter);
 386         return err;
 387 }
 388
 389 /**
 390  * pch_gbe_get_pauseparam - Report pause parameters
 391  * @netdev:  Network interface device structure
 392  * @pause:   Pause parameters structure
 393  */
 394 static void pch_gbe_get_pauseparam(struct net_device *netdev,
 395                                        struct ethtool_pauseparam *pause)
 396 {
 397         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 398         struct pch_gbe_hw *hw = &adapter->hw;
 399
 400         pause->autoneg =
 401             ((hw->mac.fc_autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE);
 402
 403         if (hw->mac.fc == PCH_GBE_FC_RX_PAUSE) {
 404                 pause->rx_pause = 1;
 405         } else if (hw->mac.fc == PCH_GBE_FC_TX_PAUSE) {
 406                 pause->tx_pause = 1;
 407         } else if (hw->mac.fc == PCH_GBE_FC_FULL) {
 408                 pause->rx_pause = 1;
 409                 pause->tx_pause = 1;
 410         }
 411 }
 412
 413 /**
 414  * pch_gbe_set_pauseparam - Set pause parameters
 415  * @netdev:  Network interface device structure
 416  * @pause:   Pause parameters structure
 417  * Returns:
 418  *      0:                      Successful.
 419  *      Negative value:         Failed.
 420  */
 421 static int pch_gbe_set_pauseparam(struct net_device *netdev,
 422                                        struct ethtool_pauseparam *pause)
 423 {
 424         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 425         struct pch_gbe_hw *hw = &adapter->hw;
 426         int ret = 0;
 427
 428         hw->mac.fc_autoneg = pause->autoneg;
 429         if ((pause->rx_pause) && (pause->tx_pause))
 430                 hw->mac.fc = PCH_GBE_FC_FULL;
 431         else if ((pause->rx_pause) && (!pause->tx_pause))
 432                 hw->mac.fc = PCH_GBE_FC_RX_PAUSE;
 433         else if ((!pause->rx_pause) && (pause->tx_pause))
 434                 hw->mac.fc = PCH_GBE_FC_TX_PAUSE;
 435         else if ((!pause->rx_pause) && (!pause->tx_pause))
 436                 hw->mac.fc = PCH_GBE_FC_NONE;
 437
 438         if (hw->mac.fc_autoneg == AUTONEG_ENABLE) {
 439                 if ((netif_running(adapter->netdev))) {
 440                         pch_gbe_down(adapter);
 441                         ret = pch_gbe_up(adapter);
 442                 } else {
 443                         pch_gbe_reset(adapter);
 444                 }
 445         } else {
 446                 ret = pch_gbe_mac_force_mac_fc(hw);
 447         }
 448         return ret;
 449 }
 450
 451 /**
 452  * pch_gbe_get_strings - Return a set of strings that describe the requested
 453  *                       objects
 454  * @netdev:    Network interface device structure
 455  * @stringset: Select the stringset. [ETH_SS_TEST] [ETH_SS_STATS]
 456  * @data:      Pointer of read string data.
 457  */
 458 static void pch_gbe_get_strings(struct net_device *netdev, u32 stringset,
 459                                         u8 *data)
 460 {
 461         u8 *p = data;
 462         int i;
 463
 464         switch (stringset) {
 465         case (u32) ETH_SS_STATS:
 466                 for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) {
 467                         memcpy(p, pch_gbe_gstrings_stats[i].string,
 468                                ETH_GSTRING_LEN);
 469                         p += ETH_GSTRING_LEN;
 470                 }
 471                 break;
 472         }
 473 }
 474
 475 /**
 476  * pch_gbe_get_ethtool_stats - Return statistics about the device
 477  * @netdev: Network interface device structure
 478  * @stats:  Ethtool statue structure
 479  * @data:   Pointer of read status area
 480  */
 481 static void pch_gbe_get_ethtool_stats(struct net_device *netdev,
 482                                   struct ethtool_stats *stats, u64 *data)
 483 {
 484         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 485         int i;
 486         const struct pch_gbe_stats *gstats = pch_gbe_gstrings_stats;
 487         char *hw_stats = (char *)&adapter->stats;
 488
 489         pch_gbe_update_stats(adapter);
 490         for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) {
 491                 char *p = hw_stats + gstats->offset;
 492                 data[i] = gstats->size == sizeof(u64) ? *(u64 *)p:(*(u32 *)p);
 493                 gstats++;
 494         }
 495 }
 496
 497 static int pch_gbe_get_sset_count(struct net_device *netdev, int sset)
 498 {
 499         switch (sset) {
 500         case ETH_SS_STATS:
 501                 return PCH_GBE_STATS_LEN;
 502         default:
 503                 return -EOPNOTSUPP;
 504         }
 505 }
 506
 507 static const struct ethtool_ops pch_gbe_ethtool_ops = {
 508         .get_drvinfo = pch_gbe_get_drvinfo,
 509         .get_regs_len = pch_gbe_get_regs_len,
 510         .get_regs = pch_gbe_get_regs,
 511         .get_wol = pch_gbe_get_wol,
 512         .set_wol = pch_gbe_set_wol,
 513         .nway_reset = pch_gbe_nway_reset,
 514         .get_link = ethtool_op_get_link,
 515         .get_ringparam = pch_gbe_get_ringparam,
 516         .set_ringparam = pch_gbe_set_ringparam,
 517         .get_pauseparam = pch_gbe_get_pauseparam,
 518         .set_pauseparam = pch_gbe_set_pauseparam,
 519         .get_strings = pch_gbe_get_strings,
 520         .get_ethtool_stats = pch_gbe_get_ethtool_stats,
 521         .get_sset_count = pch_gbe_get_sset_count,
 522         .get_link_ksettings = pch_gbe_get_link_ksettings,
 523         .set_link_ksettings = pch_gbe_set_link_ksettings,
 524 };
 525
 526 void pch_gbe_set_ethtool_ops(struct net_device *netdev)
 527 {
 528         netdev->ethtool_ops = &pch_gbe_ethtool_ops;
 529 }