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, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
  19  */
  20 #include "pch_gbe.h"
  21 #include "pch_gbe_api.h"
  22
  23 /**
  24  * pch_gbe_stats - Stats item information
  25  */
  26 struct pch_gbe_stats {
  27         char string[ETH_GSTRING_LEN];
  28         size_t size;
  29         size_t offset;
  30 };
  31
  32 #define PCH_GBE_STAT(m)                                         \
  33 {                                                               \
  34         .string = #m,                                           \
  35         .size = FIELD_SIZEOF(struct pch_gbe_hw_stats, m),       \
  36         .offset = offsetof(struct pch_gbe_hw_stats, m),         \
  37 }
  38
  39 /**
  40  * pch_gbe_gstrings_stats - ethtool information status name list
  41  */
  42 static const struct pch_gbe_stats pch_gbe_gstrings_stats[] = {
  43         PCH_GBE_STAT(rx_packets),
  44         PCH_GBE_STAT(tx_packets),
  45         PCH_GBE_STAT(rx_bytes),
  46         PCH_GBE_STAT(tx_bytes),
  47         PCH_GBE_STAT(rx_errors),
  48         PCH_GBE_STAT(tx_errors),
  49         PCH_GBE_STAT(rx_dropped),
  50         PCH_GBE_STAT(tx_dropped),
  51         PCH_GBE_STAT(multicast),
  52         PCH_GBE_STAT(collisions),
  53         PCH_GBE_STAT(rx_crc_errors),
  54         PCH_GBE_STAT(rx_frame_errors),
  55         PCH_GBE_STAT(rx_alloc_buff_failed),
  56         PCH_GBE_STAT(tx_length_errors),
  57         PCH_GBE_STAT(tx_aborted_errors),
  58         PCH_GBE_STAT(tx_carrier_errors),
  59         PCH_GBE_STAT(tx_timeout_count),
  60         PCH_GBE_STAT(tx_restart_count),
  61         PCH_GBE_STAT(intr_rx_dsc_empty_count),
  62         PCH_GBE_STAT(intr_rx_frame_err_count),
  63         PCH_GBE_STAT(intr_rx_fifo_err_count),
  64         PCH_GBE_STAT(intr_rx_dma_err_count),
  65         PCH_GBE_STAT(intr_tx_fifo_err_count),
  66         PCH_GBE_STAT(intr_tx_dma_err_count),
  67         PCH_GBE_STAT(intr_tcpip_err_count)
  68 };
  69
  70 #define PCH_GBE_QUEUE_STATS_LEN 0
  71 #define PCH_GBE_GLOBAL_STATS_LEN        ARRAY_SIZE(pch_gbe_gstrings_stats)
  72 #define PCH_GBE_STATS_LEN (PCH_GBE_GLOBAL_STATS_LEN + PCH_GBE_QUEUE_STATS_LEN)
  73
  74 #define PCH_GBE_MAC_REGS_LEN    (sizeof(struct pch_gbe_regs) / 4)
  75 #define PCH_GBE_REGS_LEN        (PCH_GBE_MAC_REGS_LEN + PCH_GBE_PHY_REGS_LEN)
  76 /**
  77  * pch_gbe_get_settings - Get device-specific settings
  78  * @netdev: Network interface device structure
  79  * @ecmd:   Ethtool command
  80  * Returns:
  81  *      0:                      Successful.
  82  *      Negative value:         Failed.
  83  */
  84 static int pch_gbe_get_settings(struct net_device *netdev,
  85                                  struct ethtool_cmd *ecmd)
  86 {
  87         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
  88         int ret;
  89
  90         ret = mii_ethtool_gset(&adapter->mii, ecmd);
  91         ecmd->supported &= ~(SUPPORTED_TP | SUPPORTED_1000baseT_Half);
  92         ecmd->advertising &= ~(ADVERTISED_TP | ADVERTISED_1000baseT_Half);
  93
  94         if (!netif_carrier_ok(adapter->netdev))
  95                 ethtool_cmd_speed_set(ecmd, -1);
  96         return ret;
  97 }
  98
  99 /**
 100  * pch_gbe_set_settings - Set device-specific settings
 101  * @netdev: Network interface device structure
 102  * @ecmd:   Ethtool command
 103  * Returns:
 104  *      0:                      Successful.
 105  *      Negative value:         Failed.
 106  */
 107 static int pch_gbe_set_settings(struct net_device *netdev,
 108                                  struct ethtool_cmd *ecmd)
 109 {
 110         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 111         struct pch_gbe_hw *hw = &adapter->hw;
 112         u32 speed = ethtool_cmd_speed(ecmd);
 113         int ret;
 114
 115         pch_gbe_hal_write_phy_reg(hw, MII_BMCR, BMCR_RESET);
 116
 117         /* when set_settings() is called with a ethtool_cmd previously
 118          * filled by get_settings() on a down link, speed is -1: */
 119         if (speed == UINT_MAX) {
 120                 speed = SPEED_1000;
 121                 ecmd->duplex = DUPLEX_FULL;
 122         }
 123         ret = mii_ethtool_sset(&adapter->mii, ecmd);
 124         if (ret) {
 125                 netdev_err(netdev, "Error: mii_ethtool_sset\n");
 126                 return ret;
 127         }
 128         hw->mac.link_speed = speed;
 129         hw->mac.link_duplex = ecmd->duplex;
 130         hw->phy.autoneg_advertised = ecmd->advertising;
 131         hw->mac.autoneg = ecmd->autoneg;
 132
 133         /* reset the link */
 134         if (netif_running(adapter->netdev)) {
 135                 pch_gbe_down(adapter);
 136                 ret = pch_gbe_up(adapter);
 137         } else {
 138                 pch_gbe_reset(adapter);
 139         }
 140         return ret;
 141 }
 142
 143 /**
 144  * pch_gbe_get_regs_len - Report the size of device registers
 145  * @netdev: Network interface device structure
 146  * Returns: the size of device registers.
 147  */
 148 static int pch_gbe_get_regs_len(struct net_device *netdev)
 149 {
 150         return PCH_GBE_REGS_LEN * (int)sizeof(u32);
 151 }
 152
 153 /**
 154  * pch_gbe_get_drvinfo - Report driver information
 155  * @netdev:  Network interface device structure
 156  * @drvinfo: Driver information structure
 157  */
 158 static void pch_gbe_get_drvinfo(struct net_device *netdev,
 159                                  struct ethtool_drvinfo *drvinfo)
 160 {
 161         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 162
 163         strlcpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
 164         strlcpy(drvinfo->version, pch_driver_version, sizeof(drvinfo->version));
 165         strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
 166                 sizeof(drvinfo->bus_info));
 167         drvinfo->regdump_len = pch_gbe_get_regs_len(netdev);
 168 }
 169
 170 /**
 171  * pch_gbe_get_regs - Get device registers
 172  * @netdev: Network interface device structure
 173  * @regs:   Ethtool register structure
 174  * @p:      Buffer pointer of read device register date
 175  */
 176 static void pch_gbe_get_regs(struct net_device *netdev,
 177                                 struct ethtool_regs *regs, void *p)
 178 {
 179         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 180         struct pch_gbe_hw *hw = &adapter->hw;
 181         struct pci_dev *pdev = adapter->pdev;
 182         u32 *regs_buff = p;
 183         u16 i, tmp;
 184
 185         regs->version = 0x1000000 | (__u32)pdev->revision << 16 | pdev->device;
 186         for (i = 0; i < PCH_GBE_MAC_REGS_LEN; i++)
 187                 *regs_buff++ = ioread32(&hw->reg->INT_ST + i);
 188         /* PHY register */
 189         for (i = 0; i < PCH_GBE_PHY_REGS_LEN; i++) {
 190                 pch_gbe_hal_read_phy_reg(&adapter->hw, i, &tmp);
 191                 *regs_buff++ = tmp;
 192         }
 193 }
 194
 195 /**
 196  * pch_gbe_get_wol - Report whether Wake-on-Lan is enabled
 197  * @netdev: Network interface device structure
 198  * @wol:    Wake-on-Lan information
 199  */
 200 static void pch_gbe_get_wol(struct net_device *netdev,
 201                                 struct ethtool_wolinfo *wol)
 202 {
 203         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 204
 205         wol->supported = WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | WAKE_MAGIC;
 206         wol->wolopts = 0;
 207
 208         if ((adapter->wake_up_evt & PCH_GBE_WLC_IND))
 209                 wol->wolopts |= WAKE_UCAST;
 210         if ((adapter->wake_up_evt & PCH_GBE_WLC_MLT))
 211                 wol->wolopts |= WAKE_MCAST;
 212         if ((adapter->wake_up_evt & PCH_GBE_WLC_BR))
 213                 wol->wolopts |= WAKE_BCAST;
 214         if ((adapter->wake_up_evt & PCH_GBE_WLC_MP))
 215                 wol->wolopts |= WAKE_MAGIC;
 216 }
 217
 218 /**
 219  * pch_gbe_set_wol - Turn Wake-on-Lan on or off
 220  * @netdev: Network interface device structure
 221  * @wol:    Pointer of wake-on-Lan information straucture
 222  * Returns:
 223  *      0:                      Successful.
 224  *      Negative value:         Failed.
 225  */
 226 static int pch_gbe_set_wol(struct net_device *netdev,
 227                                 struct ethtool_wolinfo *wol)
 228 {
 229         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 230
 231         if ((wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE)))
 232                 return -EOPNOTSUPP;
 233         /* these settings will always override what we currently have */
 234         adapter->wake_up_evt = 0;
 235
 236         if ((wol->wolopts & WAKE_UCAST))
 237                 adapter->wake_up_evt |= PCH_GBE_WLC_IND;
 238         if ((wol->wolopts & WAKE_MCAST))
 239                 adapter->wake_up_evt |= PCH_GBE_WLC_MLT;
 240         if ((wol->wolopts & WAKE_BCAST))
 241                 adapter->wake_up_evt |= PCH_GBE_WLC_BR;
 242         if ((wol->wolopts & WAKE_MAGIC))
 243                 adapter->wake_up_evt |= PCH_GBE_WLC_MP;
 244         return 0;
 245 }
 246
 247 /**
 248  * pch_gbe_nway_reset - Restart autonegotiation
 249  * @netdev: Network interface device structure
 250  * Returns:
 251  *      0:                      Successful.
 252  *      Negative value:         Failed.
 253  */
 254 static int pch_gbe_nway_reset(struct net_device *netdev)
 255 {
 256         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 257
 258         return mii_nway_restart(&adapter->mii);
 259 }
 260
 261 /**
 262  * pch_gbe_get_ringparam - Report ring sizes
 263  * @netdev:  Network interface device structure
 264  * @ring:    Ring param structure
 265  */
 266 static void pch_gbe_get_ringparam(struct net_device *netdev,
 267                                         struct ethtool_ringparam *ring)
 268 {
 269         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 270         struct pch_gbe_tx_ring *txdr = adapter->tx_ring;
 271         struct pch_gbe_rx_ring *rxdr = adapter->rx_ring;
 272
 273         ring->rx_max_pending = PCH_GBE_MAX_RXD;
 274         ring->tx_max_pending = PCH_GBE_MAX_TXD;
 275         ring->rx_pending = rxdr->count;
 276         ring->tx_pending = txdr->count;
 277 }
 278
 279 /**
 280  * pch_gbe_set_ringparam - Set ring sizes
 281  * @netdev:  Network interface device structure
 282  * @ring:    Ring param structure
 283  * Returns
 284  *      0:                      Successful.
 285  *      Negative value:         Failed.
 286  */
 287 static int pch_gbe_set_ringparam(struct net_device *netdev,
 288                                         struct ethtool_ringparam *ring)
 289 {
 290         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 291         struct pch_gbe_tx_ring *txdr, *tx_old;
 292         struct pch_gbe_rx_ring *rxdr, *rx_old;
 293         int tx_ring_size, rx_ring_size;
 294         int err = 0;
 295
 296         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 297                 return -EINVAL;
 298         tx_ring_size = (int)sizeof(struct pch_gbe_tx_ring);
 299         rx_ring_size = (int)sizeof(struct pch_gbe_rx_ring);
 300
 301         if ((netif_running(adapter->netdev)))
 302                 pch_gbe_down(adapter);
 303         tx_old = adapter->tx_ring;
 304         rx_old = adapter->rx_ring;
 305
 306         txdr = kzalloc(tx_ring_size, GFP_KERNEL);
 307         if (!txdr) {
 308                 err = -ENOMEM;
 309                 goto err_alloc_tx;
 310         }
 311         rxdr = kzalloc(rx_ring_size, GFP_KERNEL);
 312         if (!rxdr) {
 313                 err = -ENOMEM;
 314                 goto err_alloc_rx;
 315         }
 316         adapter->tx_ring = txdr;
 317         adapter->rx_ring = rxdr;
 318
 319         rxdr->count =
 320                 clamp_val(ring->rx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD);
 321         rxdr->count = roundup(rxdr->count, PCH_GBE_RX_DESC_MULTIPLE);
 322
 323         txdr->count =
 324                 clamp_val(ring->tx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD);
 325         txdr->count = roundup(txdr->count, PCH_GBE_TX_DESC_MULTIPLE);
 326
 327         if ((netif_running(adapter->netdev))) {
 328                 /* Try to get new resources before deleting old */
 329                 err = pch_gbe_setup_rx_resources(adapter, adapter->rx_ring);
 330                 if (err)
 331                         goto err_setup_rx;
 332                 err = pch_gbe_setup_tx_resources(adapter, adapter->tx_ring);
 333                 if (err)
 334                         goto err_setup_tx;
 335                 /* save the new, restore the old in order to free it,
 336                  * then restore the new back again */
 337 #ifdef RINGFREE
 338                 adapter->rx_ring = rx_old;
 339                 adapter->tx_ring = tx_old;
 340                 pch_gbe_free_rx_resources(adapter, adapter->rx_ring);
 341                 pch_gbe_free_tx_resources(adapter, adapter->tx_ring);
 342                 kfree(tx_old);
 343                 kfree(rx_old);
 344                 adapter->rx_ring = rxdr;
 345                 adapter->tx_ring = txdr;
 346 #else
 347                 pch_gbe_free_rx_resources(adapter, rx_old);
 348                 pch_gbe_free_tx_resources(adapter, tx_old);
 349                 kfree(tx_old);
 350                 kfree(rx_old);
 351                 adapter->rx_ring = rxdr;
 352                 adapter->tx_ring = txdr;
 353 #endif
 354                 err = pch_gbe_up(adapter);
 355         }
 356         return err;
 357
 358 err_setup_tx:
 359         pch_gbe_free_rx_resources(adapter, adapter->rx_ring);
 360 err_setup_rx:
 361         adapter->rx_ring = rx_old;
 362         adapter->tx_ring = tx_old;
 363         kfree(rxdr);
 364 err_alloc_rx:
 365         kfree(txdr);
 366 err_alloc_tx:
 367         if (netif_running(adapter->netdev))
 368                 pch_gbe_up(adapter);
 369         return err;
 370 }
 371
 372 /**
 373  * pch_gbe_get_pauseparam - Report pause parameters
 374  * @netdev:  Network interface device structure
 375  * @pause:   Pause parameters structure
 376  */
 377 static void pch_gbe_get_pauseparam(struct net_device *netdev,
 378                                        struct ethtool_pauseparam *pause)
 379 {
 380         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 381         struct pch_gbe_hw *hw = &adapter->hw;
 382
 383         pause->autoneg =
 384             ((hw->mac.fc_autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE);
 385
 386         if (hw->mac.fc == PCH_GBE_FC_RX_PAUSE) {
 387                 pause->rx_pause = 1;
 388         } else if (hw->mac.fc == PCH_GBE_FC_TX_PAUSE) {
 389                 pause->tx_pause = 1;
 390         } else if (hw->mac.fc == PCH_GBE_FC_FULL) {
 391                 pause->rx_pause = 1;
 392                 pause->tx_pause = 1;
 393         }
 394 }
 395
 396 /**
 397  * pch_gbe_set_pauseparam - Set pause paramters
 398  * @netdev:  Network interface device structure
 399  * @pause:   Pause parameters structure
 400  * Returns:
 401  *      0:                      Successful.
 402  *      Negative value:         Failed.
 403  */
 404 static int pch_gbe_set_pauseparam(struct net_device *netdev,
 405                                        struct ethtool_pauseparam *pause)
 406 {
 407         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 408         struct pch_gbe_hw *hw = &adapter->hw;
 409         int ret = 0;
 410
 411         hw->mac.fc_autoneg = pause->autoneg;
 412         if ((pause->rx_pause) && (pause->tx_pause))
 413                 hw->mac.fc = PCH_GBE_FC_FULL;
 414         else if ((pause->rx_pause) && (!pause->tx_pause))
 415                 hw->mac.fc = PCH_GBE_FC_RX_PAUSE;
 416         else if ((!pause->rx_pause) && (pause->tx_pause))
 417                 hw->mac.fc = PCH_GBE_FC_TX_PAUSE;
 418         else if ((!pause->rx_pause) && (!pause->tx_pause))
 419                 hw->mac.fc = PCH_GBE_FC_NONE;
 420
 421         if (hw->mac.fc_autoneg == AUTONEG_ENABLE) {
 422                 if ((netif_running(adapter->netdev))) {
 423                         pch_gbe_down(adapter);
 424                         ret = pch_gbe_up(adapter);
 425                 } else {
 426                         pch_gbe_reset(adapter);
 427                 }
 428         } else {
 429                 ret = pch_gbe_mac_force_mac_fc(hw);
 430         }
 431         return ret;
 432 }
 433
 434 /**
 435  * pch_gbe_get_strings - Return a set of strings that describe the requested
 436  *                       objects
 437  * @netdev:    Network interface device structure
 438  * @stringset: Select the stringset. [ETH_SS_TEST] [ETH_SS_STATS]
 439  * @data:      Pointer of read string data.
 440  */
 441 static void pch_gbe_get_strings(struct net_device *netdev, u32 stringset,
 442                                         u8 *data)
 443 {
 444         u8 *p = data;
 445         int i;
 446
 447         switch (stringset) {
 448         case (u32) ETH_SS_STATS:
 449                 for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) {
 450                         memcpy(p, pch_gbe_gstrings_stats[i].string,
 451                                ETH_GSTRING_LEN);
 452                         p += ETH_GSTRING_LEN;
 453                 }
 454                 break;
 455         }
 456 }
 457
 458 /**
 459  * pch_gbe_get_ethtool_stats - Return statistics about the device
 460  * @netdev: Network interface device structure
 461  * @stats:  Ethtool statue structure
 462  * @data:   Pointer of read status area
 463  */
 464 static void pch_gbe_get_ethtool_stats(struct net_device *netdev,
 465                                   struct ethtool_stats *stats, u64 *data)
 466 {
 467         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 468         int i;
 469         const struct pch_gbe_stats *gstats = pch_gbe_gstrings_stats;
 470         char *hw_stats = (char *)&adapter->stats;
 471
 472         pch_gbe_update_stats(adapter);
 473         for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) {
 474                 char *p = hw_stats + gstats->offset;
 475                 data[i] = gstats->size == sizeof(u64) ? *(u64 *)p:(*(u32 *)p);
 476                 gstats++;
 477         }
 478 }
 479
 480 static int pch_gbe_get_sset_count(struct net_device *netdev, int sset)
 481 {
 482         switch (sset) {
 483         case ETH_SS_STATS:
 484                 return PCH_GBE_STATS_LEN;
 485         default:
 486                 return -EOPNOTSUPP;
 487         }
 488 }
 489
 490 static const struct ethtool_ops pch_gbe_ethtool_ops = {
 491         .get_settings = pch_gbe_get_settings,
 492         .set_settings = pch_gbe_set_settings,
 493         .get_drvinfo = pch_gbe_get_drvinfo,
 494         .get_regs_len = pch_gbe_get_regs_len,
 495         .get_regs = pch_gbe_get_regs,
 496         .get_wol = pch_gbe_get_wol,
 497         .set_wol = pch_gbe_set_wol,
 498         .nway_reset = pch_gbe_nway_reset,
 499         .get_link = ethtool_op_get_link,
 500         .get_ringparam = pch_gbe_get_ringparam,
 501         .set_ringparam = pch_gbe_set_ringparam,
 502         .get_pauseparam = pch_gbe_get_pauseparam,
 503         .set_pauseparam = pch_gbe_set_pauseparam,
 504         .get_strings = pch_gbe_get_strings,
 505         .get_ethtool_stats = pch_gbe_get_ethtool_stats,
 506         .get_sset_count = pch_gbe_get_sset_count,
 507 };
 508
 509 void pch_gbe_set_ethtool_ops(struct net_device *netdev)
 510 {
 511         SET_ETHTOOL_OPS(netdev, &pch_gbe_ethtool_ops);
 512 }