drivers/net/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                 pr_err("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         pch_gbe_hal_phy_sw_reset(hw);
 133
 134         /* reset the link */
 135         if (netif_running(adapter->netdev)) {
 136                 pch_gbe_down(adapter);
 137                 ret = pch_gbe_up(adapter);
 138         } else {
 139                 pch_gbe_reset(adapter);
 140         }
 141         return ret;
 142 }
 143
 144 /**
 145  * pch_gbe_get_regs_len - Report the size of device registers
 146  * @netdev: Network interface device structure
 147  * Returns: the size of device registers.
 148  */
 149 static int pch_gbe_get_regs_len(struct net_device *netdev)
 150 {
 151         return PCH_GBE_REGS_LEN * (int)sizeof(u32);
 152 }
 153
 154 /**
 155  * pch_gbe_get_drvinfo - Report driver information
 156  * @netdev:  Network interface device structure
 157  * @drvinfo: Driver information structure
 158  */
 159 static void pch_gbe_get_drvinfo(struct net_device *netdev,
 160                                  struct ethtool_drvinfo *drvinfo)
 161 {
 162         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 163
 164         strcpy(drvinfo->driver, KBUILD_MODNAME);
 165         strcpy(drvinfo->version, pch_driver_version);
 166         strcpy(drvinfo->fw_version, "N/A");
 167         strcpy(drvinfo->bus_info, pci_name(adapter->pdev));
 168         drvinfo->regdump_len = pch_gbe_get_regs_len(netdev);
 169 }
 170
 171 /**
 172  * pch_gbe_get_regs - Get device registers
 173  * @netdev: Network interface device structure
 174  * @regs:   Ethtool register structure
 175  * @p:      Buffer pointer of read device register date
 176  */
 177 static void pch_gbe_get_regs(struct net_device *netdev,
 178                                 struct ethtool_regs *regs, void *p)
 179 {
 180         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 181         struct pch_gbe_hw *hw = &adapter->hw;
 182         struct pci_dev *pdev = adapter->pdev;
 183         u32 *regs_buff = p;
 184         u16 i, tmp;
 185
 186         regs->version = 0x1000000 | (__u32)pdev->revision << 16 | pdev->device;
 187         for (i = 0; i < PCH_GBE_MAC_REGS_LEN; i++)
 188                 *regs_buff++ = ioread32(&hw->reg->INT_ST + i);
 189         /* PHY register */
 190         for (i = 0; i < PCH_GBE_PHY_REGS_LEN; i++) {
 191                 pch_gbe_hal_read_phy_reg(&adapter->hw, i, &tmp);
 192                 *regs_buff++ = tmp;
 193         }
 194 }
 195
 196 /**
 197  * pch_gbe_get_wol - Report whether Wake-on-Lan is enabled
 198  * @netdev: Network interface device structure
 199  * @wol:    Wake-on-Lan information
 200  */
 201 static void pch_gbe_get_wol(struct net_device *netdev,
 202                                 struct ethtool_wolinfo *wol)
 203 {
 204         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 205
 206         wol->supported = WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | WAKE_MAGIC;
 207         wol->wolopts = 0;
 208
 209         if ((adapter->wake_up_evt & PCH_GBE_WLC_IND))
 210                 wol->wolopts |= WAKE_UCAST;
 211         if ((adapter->wake_up_evt & PCH_GBE_WLC_MLT))
 212                 wol->wolopts |= WAKE_MCAST;
 213         if ((adapter->wake_up_evt & PCH_GBE_WLC_BR))
 214                 wol->wolopts |= WAKE_BCAST;
 215         if ((adapter->wake_up_evt & PCH_GBE_WLC_MP))
 216                 wol->wolopts |= WAKE_MAGIC;
 217 }
 218
 219 /**
 220  * pch_gbe_set_wol - Turn Wake-on-Lan on or off
 221  * @netdev: Network interface device structure
 222  * @wol:    Pointer of wake-on-Lan information straucture
 223  * Returns
 224  *      0:                      Successful.
 225  *      Negative value:         Failed.
 226  */
 227 static int pch_gbe_set_wol(struct net_device *netdev,
 228                                 struct ethtool_wolinfo *wol)
 229 {
 230         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 231
 232         if ((wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE)))
 233                 return -EOPNOTSUPP;
 234         /* these settings will always override what we currently have */
 235         adapter->wake_up_evt = 0;
 236
 237         if ((wol->wolopts & WAKE_UCAST))
 238                 adapter->wake_up_evt |= PCH_GBE_WLC_IND;
 239         if ((wol->wolopts & WAKE_MCAST))
 240                 adapter->wake_up_evt |= PCH_GBE_WLC_MLT;
 241         if ((wol->wolopts & WAKE_BCAST))
 242                 adapter->wake_up_evt |= PCH_GBE_WLC_BR;
 243         if ((wol->wolopts & WAKE_MAGIC))
 244                 adapter->wake_up_evt |= PCH_GBE_WLC_MP;
 245         return 0;
 246 }
 247
 248 /**
 249  * pch_gbe_nway_reset - Restart autonegotiation
 250  * @netdev: Network interface device structure
 251  * Returns
 252  *      0:                      Successful.
 253  *      Negative value:         Failed.
 254  */
 255 static int pch_gbe_nway_reset(struct net_device *netdev)
 256 {
 257         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 258
 259         return mii_nway_restart(&adapter->mii);
 260 }
 261
 262 /**
 263  * pch_gbe_get_ringparam - Report ring sizes
 264  * @netdev:  Network interface device structure
 265  * @ring:    Ring param structure
 266  */
 267 static void pch_gbe_get_ringparam(struct net_device *netdev,
 268                                         struct ethtool_ringparam *ring)
 269 {
 270         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 271         struct pch_gbe_tx_ring *txdr = adapter->tx_ring;
 272         struct pch_gbe_rx_ring *rxdr = adapter->rx_ring;
 273
 274         ring->rx_max_pending = PCH_GBE_MAX_RXD;
 275         ring->tx_max_pending = PCH_GBE_MAX_TXD;
 276         ring->rx_mini_max_pending = 0;
 277         ring->rx_jumbo_max_pending = 0;
 278         ring->rx_pending = rxdr->count;
 279         ring->tx_pending = txdr->count;
 280         ring->rx_mini_pending = 0;
 281         ring->rx_jumbo_pending = 0;
 282 }
 283
 284 /**
 285  * pch_gbe_set_ringparam - Set ring sizes
 286  * @netdev:  Network interface device structure
 287  * @ring:    Ring param structure
 288  * Returns
 289  *      0:                      Successful.
 290  *      Negative value:         Failed.
 291  */
 292 static int pch_gbe_set_ringparam(struct net_device *netdev,
 293                                         struct ethtool_ringparam *ring)
 294 {
 295         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 296         struct pch_gbe_tx_ring *txdr, *tx_old;
 297         struct pch_gbe_rx_ring *rxdr, *rx_old;
 298         int tx_ring_size, rx_ring_size;
 299         int err = 0;
 300
 301         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 302                 return -EINVAL;
 303         tx_ring_size = (int)sizeof(struct pch_gbe_tx_ring);
 304         rx_ring_size = (int)sizeof(struct pch_gbe_rx_ring);
 305
 306         if ((netif_running(adapter->netdev)))
 307                 pch_gbe_down(adapter);
 308         tx_old = adapter->tx_ring;
 309         rx_old = adapter->rx_ring;
 310
 311         txdr = kzalloc(tx_ring_size, GFP_KERNEL);
 312         if (!txdr) {
 313                 err = -ENOMEM;
 314                 goto err_alloc_tx;
 315         }
 316         rxdr = kzalloc(rx_ring_size, GFP_KERNEL);
 317         if (!rxdr) {
 318                 err = -ENOMEM;
 319                 goto err_alloc_rx;
 320         }
 321         adapter->tx_ring = txdr;
 322         adapter->rx_ring = rxdr;
 323
 324         rxdr->count =
 325                 clamp_val(ring->rx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD);
 326         rxdr->count = roundup(rxdr->count, PCH_GBE_RX_DESC_MULTIPLE);
 327
 328         txdr->count =
 329                 clamp_val(ring->tx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD);
 330         txdr->count = roundup(txdr->count, PCH_GBE_TX_DESC_MULTIPLE);
 331
 332         if ((netif_running(adapter->netdev))) {
 333                 /* Try to get new resources before deleting old */
 334                 err = pch_gbe_setup_rx_resources(adapter, adapter->rx_ring);
 335                 if (err)
 336                         goto err_setup_rx;
 337                 err = pch_gbe_setup_tx_resources(adapter, adapter->tx_ring);
 338                 if (err)
 339                         goto err_setup_tx;
 340                 /* save the new, restore the old in order to free it,
 341                  * then restore the new back again */
 342 #ifdef RINGFREE
 343                 adapter->rx_ring = rx_old;
 344                 adapter->tx_ring = tx_old;
 345                 pch_gbe_free_rx_resources(adapter, adapter->rx_ring);
 346                 pch_gbe_free_tx_resources(adapter, adapter->tx_ring);
 347                 kfree(tx_old);
 348                 kfree(rx_old);
 349                 adapter->rx_ring = rxdr;
 350                 adapter->tx_ring = txdr;
 351 #else
 352                 pch_gbe_free_rx_resources(adapter, rx_old);
 353                 pch_gbe_free_tx_resources(adapter, tx_old);
 354                 kfree(tx_old);
 355                 kfree(rx_old);
 356                 adapter->rx_ring = rxdr;
 357                 adapter->tx_ring = txdr;
 358 #endif
 359                 err = pch_gbe_up(adapter);
 360         }
 361         return err;
 362
 363 err_setup_tx:
 364         pch_gbe_free_rx_resources(adapter, adapter->rx_ring);
 365 err_setup_rx:
 366         adapter->rx_ring = rx_old;
 367         adapter->tx_ring = tx_old;
 368         kfree(rxdr);
 369 err_alloc_rx:
 370         kfree(txdr);
 371 err_alloc_tx:
 372         if (netif_running(adapter->netdev))
 373                 pch_gbe_up(adapter);
 374         return err;
 375 }
 376
 377 /**
 378  * pch_gbe_get_pauseparam - Report pause parameters
 379  * @netdev:  Network interface device structure
 380  * @pause:   Pause parameters structure
 381  */
 382 static void pch_gbe_get_pauseparam(struct net_device *netdev,
 383                                        struct ethtool_pauseparam *pause)
 384 {
 385         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 386         struct pch_gbe_hw *hw = &adapter->hw;
 387
 388         pause->autoneg =
 389             ((hw->mac.fc_autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE);
 390
 391         if (hw->mac.fc == PCH_GBE_FC_RX_PAUSE) {
 392                 pause->rx_pause = 1;
 393         } else if (hw->mac.fc == PCH_GBE_FC_TX_PAUSE) {
 394                 pause->tx_pause = 1;
 395         } else if (hw->mac.fc == PCH_GBE_FC_FULL) {
 396                 pause->rx_pause = 1;
 397                 pause->tx_pause = 1;
 398         }
 399 }
 400
 401 /**
 402  * pch_gbe_set_pauseparam - Set pause paramters
 403  * @netdev:  Network interface device structure
 404  * @pause:   Pause parameters structure
 405  * Returns
 406  *      0:                      Successful.
 407  *      Negative value:         Failed.
 408  */
 409 static int pch_gbe_set_pauseparam(struct net_device *netdev,
 410                                        struct ethtool_pauseparam *pause)
 411 {
 412         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 413         struct pch_gbe_hw *hw = &adapter->hw;
 414         int ret = 0;
 415
 416         hw->mac.fc_autoneg = pause->autoneg;
 417         if ((pause->rx_pause) && (pause->tx_pause))
 418                 hw->mac.fc = PCH_GBE_FC_FULL;
 419         else if ((pause->rx_pause) && (!pause->tx_pause))
 420                 hw->mac.fc = PCH_GBE_FC_RX_PAUSE;
 421         else if ((!pause->rx_pause) && (pause->tx_pause))
 422                 hw->mac.fc = PCH_GBE_FC_TX_PAUSE;
 423         else if ((!pause->rx_pause) && (!pause->tx_pause))
 424                 hw->mac.fc = PCH_GBE_FC_NONE;
 425
 426         if (hw->mac.fc_autoneg == AUTONEG_ENABLE) {
 427                 if ((netif_running(adapter->netdev))) {
 428                         pch_gbe_down(adapter);
 429                         ret = pch_gbe_up(adapter);
 430                 } else {
 431                         pch_gbe_reset(adapter);
 432                 }
 433         } else {
 434                 ret = pch_gbe_mac_force_mac_fc(hw);
 435         }
 436         return ret;
 437 }
 438
 439 /**
 440  * pch_gbe_get_strings - Return a set of strings that describe the requested
 441  *                       objects
 442  * @netdev:    Network interface device structure
 443  * @stringset: Select the stringset. [ETH_SS_TEST] [ETH_SS_STATS]
 444  * @data:      Pointer of read string data.
 445  */
 446 static void pch_gbe_get_strings(struct net_device *netdev, u32 stringset,
 447                                         u8 *data)
 448 {
 449         u8 *p = data;
 450         int i;
 451
 452         switch (stringset) {
 453         case (u32) ETH_SS_STATS:
 454                 for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) {
 455                         memcpy(p, pch_gbe_gstrings_stats[i].string,
 456                                ETH_GSTRING_LEN);
 457                         p += ETH_GSTRING_LEN;
 458                 }
 459                 break;
 460         }
 461 }
 462
 463 /**
 464  * pch_gbe_get_ethtool_stats - Return statistics about the device
 465  * @netdev: Network interface device structure
 466  * @stats:  Ethtool statue structure
 467  * @data:   Pointer of read status area
 468  */
 469 static void pch_gbe_get_ethtool_stats(struct net_device *netdev,
 470                                   struct ethtool_stats *stats, u64 *data)
 471 {
 472         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 473         int i;
 474         const struct pch_gbe_stats *gstats = pch_gbe_gstrings_stats;
 475         char *hw_stats = (char *)&adapter->stats;
 476
 477         pch_gbe_update_stats(adapter);
 478         for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) {
 479                 char *p = hw_stats + gstats->offset;
 480                 data[i] = gstats->size == sizeof(u64) ? *(u64 *)p:(*(u32 *)p);
 481                 gstats++;
 482         }
 483 }
 484
 485 static int pch_gbe_get_sset_count(struct net_device *netdev, int sset)
 486 {
 487         switch (sset) {
 488         case ETH_SS_STATS:
 489                 return PCH_GBE_STATS_LEN;
 490         default:
 491                 return -EOPNOTSUPP;
 492         }
 493 }
 494
 495 static const struct ethtool_ops pch_gbe_ethtool_ops = {
 496         .get_settings = pch_gbe_get_settings,
 497         .set_settings = pch_gbe_set_settings,
 498         .get_drvinfo = pch_gbe_get_drvinfo,
 499         .get_regs_len = pch_gbe_get_regs_len,
 500         .get_regs = pch_gbe_get_regs,
 501         .get_wol = pch_gbe_get_wol,
 502         .set_wol = pch_gbe_set_wol,
 503         .nway_reset = pch_gbe_nway_reset,
 504         .get_link = ethtool_op_get_link,
 505         .get_ringparam = pch_gbe_get_ringparam,
 506         .set_ringparam = pch_gbe_set_ringparam,
 507         .get_pauseparam = pch_gbe_get_pauseparam,
 508         .set_pauseparam = pch_gbe_set_pauseparam,
 509         .get_strings = pch_gbe_get_strings,
 510         .get_ethtool_stats = pch_gbe_get_ethtool_stats,
 511         .get_sset_count = pch_gbe_get_sset_count,
 512 };
 513
 514 void pch_gbe_set_ethtool_ops(struct net_device *netdev)
 515 {
 516         SET_ETHTOOL_OPS(netdev, &pch_gbe_ethtool_ops);
 517 }