drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c

   1 /*******************************************************************************
   2   STMMAC Ethtool support
   3
   4   Copyright (C) 2007-2009  STMicroelectronics Ltd
   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   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
  23 *******************************************************************************/
  24
  25 #include <linux/etherdevice.h>
  26 #include <linux/ethtool.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/mii.h>
  29 #include <linux/phy.h>
  30 #include <asm/io.h>
  31
  32 #include "stmmac.h"
  33 #include "dwmac_dma.h"
  34
  35 #define REG_SPACE_SIZE  0x1054
  36 #define MAC100_ETHTOOL_NAME     "st_mac100"
  37 #define GMAC_ETHTOOL_NAME       "st_gmac"
  38
  39 struct stmmac_stats {
  40         char stat_string[ETH_GSTRING_LEN];
  41         int sizeof_stat;
  42         int stat_offset;
  43 };
  44
  45 #define STMMAC_STAT(m)  \
  46         { #m, FIELD_SIZEOF(struct stmmac_extra_stats, m),       \
  47         offsetof(struct stmmac_priv, xstats.m)}
  48
  49 static const struct stmmac_stats stmmac_gstrings_stats[] = {
  50         /* Transmit errors */
  51         STMMAC_STAT(tx_underflow),
  52         STMMAC_STAT(tx_carrier),
  53         STMMAC_STAT(tx_losscarrier),
  54         STMMAC_STAT(vlan_tag),
  55         STMMAC_STAT(tx_deferred),
  56         STMMAC_STAT(tx_vlan),
  57         STMMAC_STAT(tx_jabber),
  58         STMMAC_STAT(tx_frame_flushed),
  59         STMMAC_STAT(tx_payload_error),
  60         STMMAC_STAT(tx_ip_header_error),
  61         /* Receive errors */
  62         STMMAC_STAT(rx_desc),
  63         STMMAC_STAT(sa_filter_fail),
  64         STMMAC_STAT(overflow_error),
  65         STMMAC_STAT(ipc_csum_error),
  66         STMMAC_STAT(rx_collision),
  67         STMMAC_STAT(rx_crc),
  68         STMMAC_STAT(dribbling_bit),
  69         STMMAC_STAT(rx_length),
  70         STMMAC_STAT(rx_mii),
  71         STMMAC_STAT(rx_multicast),
  72         STMMAC_STAT(rx_gmac_overflow),
  73         STMMAC_STAT(rx_watchdog),
  74         STMMAC_STAT(da_rx_filter_fail),
  75         STMMAC_STAT(sa_rx_filter_fail),
  76         STMMAC_STAT(rx_missed_cntr),
  77         STMMAC_STAT(rx_overflow_cntr),
  78         STMMAC_STAT(rx_vlan),
  79         /* Tx/Rx IRQ error info */
  80         STMMAC_STAT(tx_undeflow_irq),
  81         STMMAC_STAT(tx_process_stopped_irq),
  82         STMMAC_STAT(tx_jabber_irq),
  83         STMMAC_STAT(rx_overflow_irq),
  84         STMMAC_STAT(rx_buf_unav_irq),
  85         STMMAC_STAT(rx_process_stopped_irq),
  86         STMMAC_STAT(rx_watchdog_irq),
  87         STMMAC_STAT(tx_early_irq),
  88         STMMAC_STAT(fatal_bus_error_irq),
  89         /* Tx/Rx IRQ Events */
  90         STMMAC_STAT(rx_early_irq),
  91         STMMAC_STAT(threshold),
  92         STMMAC_STAT(tx_pkt_n),
  93         STMMAC_STAT(rx_pkt_n),
  94         STMMAC_STAT(normal_irq_n),
  95         STMMAC_STAT(rx_normal_irq_n),
  96         STMMAC_STAT(napi_poll),
  97         STMMAC_STAT(tx_normal_irq_n),
  98         STMMAC_STAT(tx_clean),
  99         STMMAC_STAT(tx_reset_ic_bit),
 100         STMMAC_STAT(irq_receive_pmt_irq_n),
 101         /* MMC info */
 102         STMMAC_STAT(mmc_tx_irq_n),
 103         STMMAC_STAT(mmc_rx_irq_n),
 104         STMMAC_STAT(mmc_rx_csum_offload_irq_n),
 105         /* EEE */
 106         STMMAC_STAT(irq_tx_path_in_lpi_mode_n),
 107         STMMAC_STAT(irq_tx_path_exit_lpi_mode_n),
 108         STMMAC_STAT(irq_rx_path_in_lpi_mode_n),
 109         STMMAC_STAT(irq_rx_path_exit_lpi_mode_n),
 110         STMMAC_STAT(phy_eee_wakeup_error_n),
 111 };
 112 #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
 113
 114 /* HW MAC Management counters (if supported) */
 115 #define STMMAC_MMC_STAT(m)      \
 116         { #m, FIELD_SIZEOF(struct stmmac_counters, m),  \
 117         offsetof(struct stmmac_priv, mmc.m)}
 118
 119 static const struct stmmac_stats stmmac_mmc[] = {
 120         STMMAC_MMC_STAT(mmc_tx_octetcount_gb),
 121         STMMAC_MMC_STAT(mmc_tx_framecount_gb),
 122         STMMAC_MMC_STAT(mmc_tx_broadcastframe_g),
 123         STMMAC_MMC_STAT(mmc_tx_multicastframe_g),
 124         STMMAC_MMC_STAT(mmc_tx_64_octets_gb),
 125         STMMAC_MMC_STAT(mmc_tx_65_to_127_octets_gb),
 126         STMMAC_MMC_STAT(mmc_tx_128_to_255_octets_gb),
 127         STMMAC_MMC_STAT(mmc_tx_256_to_511_octets_gb),
 128         STMMAC_MMC_STAT(mmc_tx_512_to_1023_octets_gb),
 129         STMMAC_MMC_STAT(mmc_tx_1024_to_max_octets_gb),
 130         STMMAC_MMC_STAT(mmc_tx_unicast_gb),
 131         STMMAC_MMC_STAT(mmc_tx_multicast_gb),
 132         STMMAC_MMC_STAT(mmc_tx_broadcast_gb),
 133         STMMAC_MMC_STAT(mmc_tx_underflow_error),
 134         STMMAC_MMC_STAT(mmc_tx_singlecol_g),
 135         STMMAC_MMC_STAT(mmc_tx_multicol_g),
 136         STMMAC_MMC_STAT(mmc_tx_deferred),
 137         STMMAC_MMC_STAT(mmc_tx_latecol),
 138         STMMAC_MMC_STAT(mmc_tx_exesscol),
 139         STMMAC_MMC_STAT(mmc_tx_carrier_error),
 140         STMMAC_MMC_STAT(mmc_tx_octetcount_g),
 141         STMMAC_MMC_STAT(mmc_tx_framecount_g),
 142         STMMAC_MMC_STAT(mmc_tx_excessdef),
 143         STMMAC_MMC_STAT(mmc_tx_pause_frame),
 144         STMMAC_MMC_STAT(mmc_tx_vlan_frame_g),
 145         STMMAC_MMC_STAT(mmc_rx_framecount_gb),
 146         STMMAC_MMC_STAT(mmc_rx_octetcount_gb),
 147         STMMAC_MMC_STAT(mmc_rx_octetcount_g),
 148         STMMAC_MMC_STAT(mmc_rx_broadcastframe_g),
 149         STMMAC_MMC_STAT(mmc_rx_multicastframe_g),
 150         STMMAC_MMC_STAT(mmc_rx_crc_errror),
 151         STMMAC_MMC_STAT(mmc_rx_align_error),
 152         STMMAC_MMC_STAT(mmc_rx_run_error),
 153         STMMAC_MMC_STAT(mmc_rx_jabber_error),
 154         STMMAC_MMC_STAT(mmc_rx_undersize_g),
 155         STMMAC_MMC_STAT(mmc_rx_oversize_g),
 156         STMMAC_MMC_STAT(mmc_rx_64_octets_gb),
 157         STMMAC_MMC_STAT(mmc_rx_65_to_127_octets_gb),
 158         STMMAC_MMC_STAT(mmc_rx_128_to_255_octets_gb),
 159         STMMAC_MMC_STAT(mmc_rx_256_to_511_octets_gb),
 160         STMMAC_MMC_STAT(mmc_rx_512_to_1023_octets_gb),
 161         STMMAC_MMC_STAT(mmc_rx_1024_to_max_octets_gb),
 162         STMMAC_MMC_STAT(mmc_rx_unicast_g),
 163         STMMAC_MMC_STAT(mmc_rx_length_error),
 164         STMMAC_MMC_STAT(mmc_rx_autofrangetype),
 165         STMMAC_MMC_STAT(mmc_rx_pause_frames),
 166         STMMAC_MMC_STAT(mmc_rx_fifo_overflow),
 167         STMMAC_MMC_STAT(mmc_rx_vlan_frames_gb),
 168         STMMAC_MMC_STAT(mmc_rx_watchdog_error),
 169         STMMAC_MMC_STAT(mmc_rx_ipc_intr_mask),
 170         STMMAC_MMC_STAT(mmc_rx_ipc_intr),
 171         STMMAC_MMC_STAT(mmc_rx_ipv4_gd),
 172         STMMAC_MMC_STAT(mmc_rx_ipv4_hderr),
 173         STMMAC_MMC_STAT(mmc_rx_ipv4_nopay),
 174         STMMAC_MMC_STAT(mmc_rx_ipv4_frag),
 175         STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl),
 176         STMMAC_MMC_STAT(mmc_rx_ipv4_gd_octets),
 177         STMMAC_MMC_STAT(mmc_rx_ipv4_hderr_octets),
 178         STMMAC_MMC_STAT(mmc_rx_ipv4_nopay_octets),
 179         STMMAC_MMC_STAT(mmc_rx_ipv4_frag_octets),
 180         STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl_octets),
 181         STMMAC_MMC_STAT(mmc_rx_ipv6_gd_octets),
 182         STMMAC_MMC_STAT(mmc_rx_ipv6_hderr_octets),
 183         STMMAC_MMC_STAT(mmc_rx_ipv6_nopay_octets),
 184         STMMAC_MMC_STAT(mmc_rx_ipv6_gd),
 185         STMMAC_MMC_STAT(mmc_rx_ipv6_hderr),
 186         STMMAC_MMC_STAT(mmc_rx_ipv6_nopay),
 187         STMMAC_MMC_STAT(mmc_rx_udp_gd),
 188         STMMAC_MMC_STAT(mmc_rx_udp_err),
 189         STMMAC_MMC_STAT(mmc_rx_tcp_gd),
 190         STMMAC_MMC_STAT(mmc_rx_tcp_err),
 191         STMMAC_MMC_STAT(mmc_rx_icmp_gd),
 192         STMMAC_MMC_STAT(mmc_rx_icmp_err),
 193         STMMAC_MMC_STAT(mmc_rx_udp_gd_octets),
 194         STMMAC_MMC_STAT(mmc_rx_udp_err_octets),
 195         STMMAC_MMC_STAT(mmc_rx_tcp_gd_octets),
 196         STMMAC_MMC_STAT(mmc_rx_tcp_err_octets),
 197         STMMAC_MMC_STAT(mmc_rx_icmp_gd_octets),
 198         STMMAC_MMC_STAT(mmc_rx_icmp_err_octets),
 199 };
 200 #define STMMAC_MMC_STATS_LEN ARRAY_SIZE(stmmac_mmc)
 201
 202 static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
 203                                       struct ethtool_drvinfo *info)
 204 {
 205         struct stmmac_priv *priv = netdev_priv(dev);
 206
 207         if (priv->plat->has_gmac)
 208                 strlcpy(info->driver, GMAC_ETHTOOL_NAME, sizeof(info->driver));
 209         else
 210                 strlcpy(info->driver, MAC100_ETHTOOL_NAME,
 211                         sizeof(info->driver));
 212
 213         strcpy(info->version, DRV_MODULE_VERSION);
 214         info->fw_version[0] = '\0';
 215 }
 216
 217 static int stmmac_ethtool_getsettings(struct net_device *dev,
 218                                       struct ethtool_cmd *cmd)
 219 {
 220         struct stmmac_priv *priv = netdev_priv(dev);
 221         struct phy_device *phy = priv->phydev;
 222         int rc;
 223         if (phy == NULL) {
 224                 pr_err("%s: %s: PHY is not registered\n",
 225                        __func__, dev->name);
 226                 return -ENODEV;
 227         }
 228         if (!netif_running(dev)) {
 229                 pr_err("%s: interface is disabled: we cannot track "
 230                 "link speed / duplex setting\n", dev->name);
 231                 return -EBUSY;
 232         }
 233         cmd->transceiver = XCVR_INTERNAL;
 234         spin_lock_irq(&priv->lock);
 235         rc = phy_ethtool_gset(phy, cmd);
 236         spin_unlock_irq(&priv->lock);
 237         return rc;
 238 }
 239
 240 static int stmmac_ethtool_setsettings(struct net_device *dev,
 241                                       struct ethtool_cmd *cmd)
 242 {
 243         struct stmmac_priv *priv = netdev_priv(dev);
 244         struct phy_device *phy = priv->phydev;
 245         int rc;
 246
 247         spin_lock(&priv->lock);
 248         rc = phy_ethtool_sset(phy, cmd);
 249         spin_unlock(&priv->lock);
 250
 251         return rc;
 252 }
 253
 254 static u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
 255 {
 256         struct stmmac_priv *priv = netdev_priv(dev);
 257         return priv->msg_enable;
 258 }
 259
 260 static void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
 261 {
 262         struct stmmac_priv *priv = netdev_priv(dev);
 263         priv->msg_enable = level;
 264
 265 }
 266
 267 static int stmmac_check_if_running(struct net_device *dev)
 268 {
 269         if (!netif_running(dev))
 270                 return -EBUSY;
 271         return 0;
 272 }
 273
 274 static int stmmac_ethtool_get_regs_len(struct net_device *dev)
 275 {
 276         return REG_SPACE_SIZE;
 277 }
 278
 279 static void stmmac_ethtool_gregs(struct net_device *dev,
 280                           struct ethtool_regs *regs, void *space)
 281 {
 282         int i;
 283         u32 *reg_space = (u32 *) space;
 284
 285         struct stmmac_priv *priv = netdev_priv(dev);
 286
 287         memset(reg_space, 0x0, REG_SPACE_SIZE);
 288
 289         if (!priv->plat->has_gmac) {
 290                 /* MAC registers */
 291                 for (i = 0; i < 12; i++)
 292                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 293                 /* DMA registers */
 294                 for (i = 0; i < 9; i++)
 295                         reg_space[i + 12] =
 296                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 297                 reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
 298                 reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
 299         } else {
 300                 /* MAC registers */
 301                 for (i = 0; i < 55; i++)
 302                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 303                 /* DMA registers */
 304                 for (i = 0; i < 22; i++)
 305                         reg_space[i + 55] =
 306                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 307         }
 308 }
 309
 310 static void
 311 stmmac_get_pauseparam(struct net_device *netdev,
 312                       struct ethtool_pauseparam *pause)
 313 {
 314         struct stmmac_priv *priv = netdev_priv(netdev);
 315
 316         spin_lock(&priv->lock);
 317
 318         pause->rx_pause = 0;
 319         pause->tx_pause = 0;
 320         pause->autoneg = priv->phydev->autoneg;
 321
 322         if (priv->flow_ctrl & FLOW_RX)
 323                 pause->rx_pause = 1;
 324         if (priv->flow_ctrl & FLOW_TX)
 325                 pause->tx_pause = 1;
 326
 327         spin_unlock(&priv->lock);
 328 }
 329
 330 static int
 331 stmmac_set_pauseparam(struct net_device *netdev,
 332                       struct ethtool_pauseparam *pause)
 333 {
 334         struct stmmac_priv *priv = netdev_priv(netdev);
 335         struct phy_device *phy = priv->phydev;
 336         int new_pause = FLOW_OFF;
 337         int ret = 0;
 338
 339         spin_lock(&priv->lock);
 340
 341         if (pause->rx_pause)
 342                 new_pause |= FLOW_RX;
 343         if (pause->tx_pause)
 344                 new_pause |= FLOW_TX;
 345
 346         priv->flow_ctrl = new_pause;
 347         phy->autoneg = pause->autoneg;
 348
 349         if (phy->autoneg) {
 350                 if (netif_running(netdev))
 351                         ret = phy_start_aneg(phy);
 352         } else
 353                 priv->hw->mac->flow_ctrl(priv->ioaddr, phy->duplex,
 354                                          priv->flow_ctrl, priv->pause);
 355         spin_unlock(&priv->lock);
 356         return ret;
 357 }
 358
 359 static void stmmac_get_ethtool_stats(struct net_device *dev,
 360                                  struct ethtool_stats *dummy, u64 *data)
 361 {
 362         struct stmmac_priv *priv = netdev_priv(dev);
 363         int i, j = 0;
 364
 365         /* Update the DMA HW counters for dwmac10/100 */
 366         if (!priv->plat->has_gmac)
 367                 priv->hw->dma->dma_diagnostic_fr(&dev->stats,
 368                                                  (void *) &priv->xstats,
 369                                                  priv->ioaddr);
 370         else {
 371                 /* If supported, for new GMAC chips expose the MMC counters */
 372                 if (priv->dma_cap.rmon) {
 373                         dwmac_mmc_read(priv->ioaddr, &priv->mmc);
 374
 375                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
 376                                 char *p;
 377                                 p = (char *)priv + stmmac_mmc[i].stat_offset;
 378
 379                                 data[j++] = (stmmac_mmc[i].sizeof_stat ==
 380                                              sizeof(u64)) ? (*(u64 *)p) :
 381                                              (*(u32 *)p);
 382                         }
 383                 }
 384                 if (priv->eee_enabled) {
 385                         int val = phy_get_eee_err(priv->phydev);
 386                         if (val)
 387                                 priv->xstats.phy_eee_wakeup_error_n = val;
 388                 }
 389         }
 390         for (i = 0; i < STMMAC_STATS_LEN; i++) {
 391                 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
 392                 data[j++] = (stmmac_gstrings_stats[i].sizeof_stat ==
 393                              sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
 394         }
 395 }
 396
 397 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
 398 {
 399         struct stmmac_priv *priv = netdev_priv(netdev);
 400         int len;
 401
 402         switch (sset) {
 403         case ETH_SS_STATS:
 404                 len = STMMAC_STATS_LEN;
 405
 406                 if (priv->dma_cap.rmon)
 407                         len += STMMAC_MMC_STATS_LEN;
 408
 409                 return len;
 410         default:
 411                 return -EOPNOTSUPP;
 412         }
 413 }
 414
 415 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 416 {
 417         int i;
 418         u8 *p = data;
 419         struct stmmac_priv *priv = netdev_priv(dev);
 420
 421         switch (stringset) {
 422         case ETH_SS_STATS:
 423                 if (priv->dma_cap.rmon)
 424                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
 425                                 memcpy(p, stmmac_mmc[i].stat_string,
 426                                        ETH_GSTRING_LEN);
 427                                 p += ETH_GSTRING_LEN;
 428                         }
 429                 for (i = 0; i < STMMAC_STATS_LEN; i++) {
 430                         memcpy(p, stmmac_gstrings_stats[i].stat_string,
 431                                 ETH_GSTRING_LEN);
 432                         p += ETH_GSTRING_LEN;
 433                 }
 434                 break;
 435         default:
 436                 WARN_ON(1);
 437                 break;
 438         }
 439 }
 440
 441 /* Currently only support WOL through Magic packet. */
 442 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 443 {
 444         struct stmmac_priv *priv = netdev_priv(dev);
 445
 446         spin_lock_irq(&priv->lock);
 447         if (device_can_wakeup(priv->device)) {
 448                 wol->supported = WAKE_MAGIC | WAKE_UCAST;
 449                 wol->wolopts = priv->wolopts;
 450         }
 451         spin_unlock_irq(&priv->lock);
 452 }
 453
 454 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 455 {
 456         struct stmmac_priv *priv = netdev_priv(dev);
 457         u32 support = WAKE_MAGIC | WAKE_UCAST;
 458
 459         /* By default almost all GMAC devices support the WoL via
 460          * magic frame but we can disable it if the HW capability
 461          * register shows no support for pmt_magic_frame. */
 462         if ((priv->hw_cap_support) && (!priv->dma_cap.pmt_magic_frame))
 463                 wol->wolopts &= ~WAKE_MAGIC;
 464
 465         if (!device_can_wakeup(priv->device))
 466                 return -EINVAL;
 467
 468         if (wol->wolopts & ~support)
 469                 return -EINVAL;
 470
 471         if (wol->wolopts) {
 472                 pr_info("stmmac: wakeup enable\n");
 473                 device_set_wakeup_enable(priv->device, 1);
 474                 enable_irq_wake(priv->wol_irq);
 475         } else {
 476                 device_set_wakeup_enable(priv->device, 0);
 477                 disable_irq_wake(priv->wol_irq);
 478         }
 479
 480         spin_lock_irq(&priv->lock);
 481         priv->wolopts = wol->wolopts;
 482         spin_unlock_irq(&priv->lock);
 483
 484         return 0;
 485 }
 486
 487 static int stmmac_ethtool_op_get_eee(struct net_device *dev,
 488                                      struct ethtool_eee *edata)
 489 {
 490         struct stmmac_priv *priv = netdev_priv(dev);
 491
 492         if (!priv->dma_cap.eee)
 493                 return -EOPNOTSUPP;
 494
 495         edata->eee_enabled = priv->eee_enabled;
 496         edata->eee_active = priv->eee_active;
 497         edata->tx_lpi_timer = priv->tx_lpi_timer;
 498
 499         return phy_ethtool_get_eee(priv->phydev, edata);
 500 }
 501
 502 static int stmmac_ethtool_op_set_eee(struct net_device *dev,
 503                                      struct ethtool_eee *edata)
 504 {
 505         struct stmmac_priv *priv = netdev_priv(dev);
 506
 507         priv->eee_enabled = edata->eee_enabled;
 508
 509         if (!priv->eee_enabled)
 510                 stmmac_disable_eee_mode(priv);
 511         else {
 512                 /* We are asking for enabling the EEE but it is safe
 513                  * to verify all by invoking the eee_init function.
 514                  * In case of failure it will return an error.
 515                  */
 516                 priv->eee_enabled = stmmac_eee_init(priv);
 517                 if (!priv->eee_enabled)
 518                         return -EOPNOTSUPP;
 519
 520                 /* Do not change tx_lpi_timer in case of failure */
 521                 priv->tx_lpi_timer = edata->tx_lpi_timer;
 522         }
 523
 524         return phy_ethtool_set_eee(priv->phydev, edata);
 525 }
 526
 527 static u32 stmmac_usec2riwt(u32 usec, struct stmmac_priv *priv)
 528 {
 529         unsigned long clk = clk_get_rate(priv->stmmac_clk);
 530
 531         if (!clk)
 532                 return 0;
 533
 534         return (usec * (clk / 1000000)) / 256;
 535 }
 536
 537 static u32 stmmac_riwt2usec(u32 riwt, struct stmmac_priv *priv)
 538 {
 539         unsigned long clk = clk_get_rate(priv->stmmac_clk);
 540
 541         if (!clk)
 542                 return 0;
 543
 544         return (riwt * 256) / (clk / 1000000);
 545 }
 546
 547 static int stmmac_get_coalesce(struct net_device *dev,
 548                                struct ethtool_coalesce *ec)
 549 {
 550         struct stmmac_priv *priv = netdev_priv(dev);
 551
 552         ec->tx_coalesce_usecs = priv->tx_coal_timer;
 553         ec->tx_max_coalesced_frames = priv->tx_coal_frames;
 554
 555         if (priv->use_riwt)
 556                 ec->rx_coalesce_usecs = stmmac_riwt2usec(priv->rx_riwt, priv);
 557
 558         return 0;
 559 }
 560
 561 static int stmmac_set_coalesce(struct net_device *dev,
 562                                struct ethtool_coalesce *ec)
 563 {
 564         struct stmmac_priv *priv = netdev_priv(dev);
 565         unsigned int rx_riwt;
 566
 567         /* Check not supported parameters  */
 568         if ((ec->rx_max_coalesced_frames) || (ec->rx_coalesce_usecs_irq) ||
 569             (ec->rx_max_coalesced_frames_irq) || (ec->tx_coalesce_usecs_irq) ||
 570             (ec->use_adaptive_rx_coalesce) || (ec->use_adaptive_tx_coalesce) ||
 571             (ec->pkt_rate_low) || (ec->rx_coalesce_usecs_low) ||
 572             (ec->rx_max_coalesced_frames_low) || (ec->tx_coalesce_usecs_high) ||
 573             (ec->tx_max_coalesced_frames_low) || (ec->pkt_rate_high) ||
 574             (ec->tx_coalesce_usecs_low) || (ec->rx_coalesce_usecs_high) ||
 575             (ec->rx_max_coalesced_frames_high) ||
 576             (ec->tx_max_coalesced_frames_irq) ||
 577             (ec->stats_block_coalesce_usecs) ||
 578             (ec->tx_max_coalesced_frames_high) || (ec->rate_sample_interval))
 579                 return -EOPNOTSUPP;
 580
 581         if (ec->rx_coalesce_usecs == 0)
 582                 return -EINVAL;
 583
 584         if ((ec->tx_coalesce_usecs == 0) &&
 585             (ec->tx_max_coalesced_frames == 0))
 586                 return -EINVAL;
 587
 588         if ((ec->tx_coalesce_usecs > STMMAC_COAL_TX_TIMER) ||
 589             (ec->tx_max_coalesced_frames > STMMAC_TX_MAX_FRAMES))
 590                 return -EINVAL;
 591
 592         rx_riwt = stmmac_usec2riwt(ec->rx_coalesce_usecs, priv);
 593
 594         if ((rx_riwt > MAX_DMA_RIWT) || (rx_riwt < MIN_DMA_RIWT))
 595                 return -EINVAL;
 596         else if (!priv->use_riwt)
 597                 return -EOPNOTSUPP;
 598
 599         /* Only copy relevant parameters, ignore all others. */
 600         priv->tx_coal_frames = ec->tx_max_coalesced_frames;
 601         priv->tx_coal_timer = ec->tx_coalesce_usecs;
 602         priv->rx_riwt = rx_riwt;
 603         priv->hw->dma->rx_watchdog(priv->ioaddr, priv->rx_riwt);
 604
 605         return 0;
 606 }
 607
 608 static const struct ethtool_ops stmmac_ethtool_ops = {
 609         .begin = stmmac_check_if_running,
 610         .get_drvinfo = stmmac_ethtool_getdrvinfo,
 611         .get_settings = stmmac_ethtool_getsettings,
 612         .set_settings = stmmac_ethtool_setsettings,
 613         .get_msglevel = stmmac_ethtool_getmsglevel,
 614         .set_msglevel = stmmac_ethtool_setmsglevel,
 615         .get_regs = stmmac_ethtool_gregs,
 616         .get_regs_len = stmmac_ethtool_get_regs_len,
 617         .get_link = ethtool_op_get_link,
 618         .get_pauseparam = stmmac_get_pauseparam,
 619         .set_pauseparam = stmmac_set_pauseparam,
 620         .get_ethtool_stats = stmmac_get_ethtool_stats,
 621         .get_strings = stmmac_get_strings,
 622         .get_wol = stmmac_get_wol,
 623         .set_wol = stmmac_set_wol,
 624         .get_eee = stmmac_ethtool_op_get_eee,
 625         .set_eee = stmmac_ethtool_op_set_eee,
 626         .get_sset_count = stmmac_get_sset_count,
 627         .get_ts_info = ethtool_op_get_ts_info,
 628         .get_coalesce = stmmac_get_coalesce,
 629         .set_coalesce = stmmac_set_coalesce,
 630 };
 631
 632 void stmmac_set_ethtool_ops(struct net_device *netdev)
 633 {
 634         SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
 635 }