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         strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
 214 }
 215
 216 static int stmmac_ethtool_getsettings(struct net_device *dev,
 217                                       struct ethtool_cmd *cmd)
 218 {
 219         struct stmmac_priv *priv = netdev_priv(dev);
 220         struct phy_device *phy = priv->phydev;
 221         int rc;
 222         if (phy == NULL) {
 223                 pr_err("%s: %s: PHY is not registered\n",
 224                        __func__, dev->name);
 225                 return -ENODEV;
 226         }
 227         if (!netif_running(dev)) {
 228                 pr_err("%s: interface is disabled: we cannot track "
 229                 "link speed / duplex setting\n", dev->name);
 230                 return -EBUSY;
 231         }
 232         cmd->transceiver = XCVR_INTERNAL;
 233         spin_lock_irq(&priv->lock);
 234         rc = phy_ethtool_gset(phy, cmd);
 235         spin_unlock_irq(&priv->lock);
 236         return rc;
 237 }
 238
 239 static int stmmac_ethtool_setsettings(struct net_device *dev,
 240                                       struct ethtool_cmd *cmd)
 241 {
 242         struct stmmac_priv *priv = netdev_priv(dev);
 243         struct phy_device *phy = priv->phydev;
 244         int rc;
 245
 246         spin_lock(&priv->lock);
 247         rc = phy_ethtool_sset(phy, cmd);
 248         spin_unlock(&priv->lock);
 249
 250         return rc;
 251 }
 252
 253 static u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
 254 {
 255         struct stmmac_priv *priv = netdev_priv(dev);
 256         return priv->msg_enable;
 257 }
 258
 259 static void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
 260 {
 261         struct stmmac_priv *priv = netdev_priv(dev);
 262         priv->msg_enable = level;
 263
 264 }
 265
 266 static int stmmac_check_if_running(struct net_device *dev)
 267 {
 268         if (!netif_running(dev))
 269                 return -EBUSY;
 270         return 0;
 271 }
 272
 273 static int stmmac_ethtool_get_regs_len(struct net_device *dev)
 274 {
 275         return REG_SPACE_SIZE;
 276 }
 277
 278 static void stmmac_ethtool_gregs(struct net_device *dev,
 279                           struct ethtool_regs *regs, void *space)
 280 {
 281         int i;
 282         u32 *reg_space = (u32 *) space;
 283
 284         struct stmmac_priv *priv = netdev_priv(dev);
 285
 286         memset(reg_space, 0x0, REG_SPACE_SIZE);
 287
 288         if (!priv->plat->has_gmac) {
 289                 /* MAC registers */
 290                 for (i = 0; i < 12; i++)
 291                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 292                 /* DMA registers */
 293                 for (i = 0; i < 9; i++)
 294                         reg_space[i + 12] =
 295                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 296                 reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
 297                 reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
 298         } else {
 299                 /* MAC registers */
 300                 for (i = 0; i < 55; i++)
 301                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 302                 /* DMA registers */
 303                 for (i = 0; i < 22; i++)
 304                         reg_space[i + 55] =
 305                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 306         }
 307 }
 308
 309 static void
 310 stmmac_get_pauseparam(struct net_device *netdev,
 311                       struct ethtool_pauseparam *pause)
 312 {
 313         struct stmmac_priv *priv = netdev_priv(netdev);
 314
 315         spin_lock(&priv->lock);
 316
 317         pause->rx_pause = 0;
 318         pause->tx_pause = 0;
 319         pause->autoneg = priv->phydev->autoneg;
 320
 321         if (priv->flow_ctrl & FLOW_RX)
 322                 pause->rx_pause = 1;
 323         if (priv->flow_ctrl & FLOW_TX)
 324                 pause->tx_pause = 1;
 325
 326         spin_unlock(&priv->lock);
 327 }
 328
 329 static int
 330 stmmac_set_pauseparam(struct net_device *netdev,
 331                       struct ethtool_pauseparam *pause)
 332 {
 333         struct stmmac_priv *priv = netdev_priv(netdev);
 334         struct phy_device *phy = priv->phydev;
 335         int new_pause = FLOW_OFF;
 336         int ret = 0;
 337
 338         spin_lock(&priv->lock);
 339
 340         if (pause->rx_pause)
 341                 new_pause |= FLOW_RX;
 342         if (pause->tx_pause)
 343                 new_pause |= FLOW_TX;
 344
 345         priv->flow_ctrl = new_pause;
 346         phy->autoneg = pause->autoneg;
 347
 348         if (phy->autoneg) {
 349                 if (netif_running(netdev))
 350                         ret = phy_start_aneg(phy);
 351         } else
 352                 priv->hw->mac->flow_ctrl(priv->ioaddr, phy->duplex,
 353                                          priv->flow_ctrl, priv->pause);
 354         spin_unlock(&priv->lock);
 355         return ret;
 356 }
 357
 358 static void stmmac_get_ethtool_stats(struct net_device *dev,
 359                                  struct ethtool_stats *dummy, u64 *data)
 360 {
 361         struct stmmac_priv *priv = netdev_priv(dev);
 362         int i, j = 0;
 363
 364         /* Update the DMA HW counters for dwmac10/100 */
 365         if (!priv->plat->has_gmac)
 366                 priv->hw->dma->dma_diagnostic_fr(&dev->stats,
 367                                                  (void *) &priv->xstats,
 368                                                  priv->ioaddr);
 369         else {
 370                 /* If supported, for new GMAC chips expose the MMC counters */
 371                 if (priv->dma_cap.rmon) {
 372                         dwmac_mmc_read(priv->ioaddr, &priv->mmc);
 373
 374                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
 375                                 char *p;
 376                                 p = (char *)priv + stmmac_mmc[i].stat_offset;
 377
 378                                 data[j++] = (stmmac_mmc[i].sizeof_stat ==
 379                                              sizeof(u64)) ? (*(u64 *)p) :
 380                                              (*(u32 *)p);
 381                         }
 382                 }
 383                 if (priv->eee_enabled) {
 384                         int val = phy_get_eee_err(priv->phydev);
 385                         if (val)
 386                                 priv->xstats.phy_eee_wakeup_error_n = val;
 387                 }
 388         }
 389         for (i = 0; i < STMMAC_STATS_LEN; i++) {
 390                 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
 391                 data[j++] = (stmmac_gstrings_stats[i].sizeof_stat ==
 392                              sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
 393         }
 394 }
 395
 396 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
 397 {
 398         struct stmmac_priv *priv = netdev_priv(netdev);
 399         int len;
 400
 401         switch (sset) {
 402         case ETH_SS_STATS:
 403                 len = STMMAC_STATS_LEN;
 404
 405                 if (priv->dma_cap.rmon)
 406                         len += STMMAC_MMC_STATS_LEN;
 407
 408                 return len;
 409         default:
 410                 return -EOPNOTSUPP;
 411         }
 412 }
 413
 414 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 415 {
 416         int i;
 417         u8 *p = data;
 418         struct stmmac_priv *priv = netdev_priv(dev);
 419
 420         switch (stringset) {
 421         case ETH_SS_STATS:
 422                 if (priv->dma_cap.rmon)
 423                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
 424                                 memcpy(p, stmmac_mmc[i].stat_string,
 425                                        ETH_GSTRING_LEN);
 426                                 p += ETH_GSTRING_LEN;
 427                         }
 428                 for (i = 0; i < STMMAC_STATS_LEN; i++) {
 429                         memcpy(p, stmmac_gstrings_stats[i].stat_string,
 430                                 ETH_GSTRING_LEN);
 431                         p += ETH_GSTRING_LEN;
 432                 }
 433                 break;
 434         default:
 435                 WARN_ON(1);
 436                 break;
 437         }
 438 }
 439
 440 /* Currently only support WOL through Magic packet. */
 441 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 442 {
 443         struct stmmac_priv *priv = netdev_priv(dev);
 444
 445         spin_lock_irq(&priv->lock);
 446         if (device_can_wakeup(priv->device)) {
 447                 wol->supported = WAKE_MAGIC | WAKE_UCAST;
 448                 wol->wolopts = priv->wolopts;
 449         }
 450         spin_unlock_irq(&priv->lock);
 451 }
 452
 453 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 454 {
 455         struct stmmac_priv *priv = netdev_priv(dev);
 456         u32 support = WAKE_MAGIC | WAKE_UCAST;
 457
 458         /* By default almost all GMAC devices support the WoL via
 459          * magic frame but we can disable it if the HW capability
 460          * register shows no support for pmt_magic_frame. */
 461         if ((priv->hw_cap_support) && (!priv->dma_cap.pmt_magic_frame))
 462                 wol->wolopts &= ~WAKE_MAGIC;
 463
 464         if (!device_can_wakeup(priv->device))
 465                 return -EINVAL;
 466
 467         if (wol->wolopts & ~support)
 468                 return -EINVAL;
 469
 470         if (wol->wolopts) {
 471                 pr_info("stmmac: wakeup enable\n");
 472                 device_set_wakeup_enable(priv->device, 1);
 473                 enable_irq_wake(priv->wol_irq);
 474         } else {
 475                 device_set_wakeup_enable(priv->device, 0);
 476                 disable_irq_wake(priv->wol_irq);
 477         }
 478
 479         spin_lock_irq(&priv->lock);
 480         priv->wolopts = wol->wolopts;
 481         spin_unlock_irq(&priv->lock);
 482
 483         return 0;
 484 }
 485
 486 static int stmmac_ethtool_op_get_eee(struct net_device *dev,
 487                                      struct ethtool_eee *edata)
 488 {
 489         struct stmmac_priv *priv = netdev_priv(dev);
 490
 491         if (!priv->dma_cap.eee)
 492                 return -EOPNOTSUPP;
 493
 494         edata->eee_enabled = priv->eee_enabled;
 495         edata->eee_active = priv->eee_active;
 496         edata->tx_lpi_timer = priv->tx_lpi_timer;
 497
 498         return phy_ethtool_get_eee(priv->phydev, edata);
 499 }
 500
 501 static int stmmac_ethtool_op_set_eee(struct net_device *dev,
 502                                      struct ethtool_eee *edata)
 503 {
 504         struct stmmac_priv *priv = netdev_priv(dev);
 505
 506         priv->eee_enabled = edata->eee_enabled;
 507
 508         if (!priv->eee_enabled)
 509                 stmmac_disable_eee_mode(priv);
 510         else {
 511                 /* We are asking for enabling the EEE but it is safe
 512                  * to verify all by invoking the eee_init function.
 513                  * In case of failure it will return an error.
 514                  */
 515                 priv->eee_enabled = stmmac_eee_init(priv);
 516                 if (!priv->eee_enabled)
 517                         return -EOPNOTSUPP;
 518
 519                 /* Do not change tx_lpi_timer in case of failure */
 520                 priv->tx_lpi_timer = edata->tx_lpi_timer;
 521         }
 522
 523         return phy_ethtool_set_eee(priv->phydev, edata);
 524 }
 525
 526 static u32 stmmac_usec2riwt(u32 usec, struct stmmac_priv *priv)
 527 {
 528         unsigned long clk = clk_get_rate(priv->stmmac_clk);
 529
 530         if (!clk)
 531                 return 0;
 532
 533         return (usec * (clk / 1000000)) / 256;
 534 }
 535
 536 static u32 stmmac_riwt2usec(u32 riwt, struct stmmac_priv *priv)
 537 {
 538         unsigned long clk = clk_get_rate(priv->stmmac_clk);
 539
 540         if (!clk)
 541                 return 0;
 542
 543         return (riwt * 256) / (clk / 1000000);
 544 }
 545
 546 static int stmmac_get_coalesce(struct net_device *dev,
 547                                struct ethtool_coalesce *ec)
 548 {
 549         struct stmmac_priv *priv = netdev_priv(dev);
 550
 551         ec->tx_coalesce_usecs = priv->tx_coal_timer;
 552         ec->tx_max_coalesced_frames = priv->tx_coal_frames;
 553
 554         if (priv->use_riwt)
 555                 ec->rx_coalesce_usecs = stmmac_riwt2usec(priv->rx_riwt, priv);
 556
 557         return 0;
 558 }
 559
 560 static int stmmac_set_coalesce(struct net_device *dev,
 561                                struct ethtool_coalesce *ec)
 562 {
 563         struct stmmac_priv *priv = netdev_priv(dev);
 564         unsigned int rx_riwt;
 565
 566         /* Check not supported parameters  */
 567         if ((ec->rx_max_coalesced_frames) || (ec->rx_coalesce_usecs_irq) ||
 568             (ec->rx_max_coalesced_frames_irq) || (ec->tx_coalesce_usecs_irq) ||
 569             (ec->use_adaptive_rx_coalesce) || (ec->use_adaptive_tx_coalesce) ||
 570             (ec->pkt_rate_low) || (ec->rx_coalesce_usecs_low) ||
 571             (ec->rx_max_coalesced_frames_low) || (ec->tx_coalesce_usecs_high) ||
 572             (ec->tx_max_coalesced_frames_low) || (ec->pkt_rate_high) ||
 573             (ec->tx_coalesce_usecs_low) || (ec->rx_coalesce_usecs_high) ||
 574             (ec->rx_max_coalesced_frames_high) ||
 575             (ec->tx_max_coalesced_frames_irq) ||
 576             (ec->stats_block_coalesce_usecs) ||
 577             (ec->tx_max_coalesced_frames_high) || (ec->rate_sample_interval))
 578                 return -EOPNOTSUPP;
 579
 580         if (ec->rx_coalesce_usecs == 0)
 581                 return -EINVAL;
 582
 583         if ((ec->tx_coalesce_usecs == 0) &&
 584             (ec->tx_max_coalesced_frames == 0))
 585                 return -EINVAL;
 586
 587         if ((ec->tx_coalesce_usecs > STMMAC_COAL_TX_TIMER) ||
 588             (ec->tx_max_coalesced_frames > STMMAC_TX_MAX_FRAMES))
 589                 return -EINVAL;
 590
 591         rx_riwt = stmmac_usec2riwt(ec->rx_coalesce_usecs, priv);
 592
 593         if ((rx_riwt > MAX_DMA_RIWT) || (rx_riwt < MIN_DMA_RIWT))
 594                 return -EINVAL;
 595         else if (!priv->use_riwt)
 596                 return -EOPNOTSUPP;
 597
 598         /* Only copy relevant parameters, ignore all others. */
 599         priv->tx_coal_frames = ec->tx_max_coalesced_frames;
 600         priv->tx_coal_timer = ec->tx_coalesce_usecs;
 601         priv->rx_riwt = rx_riwt;
 602         priv->hw->dma->rx_watchdog(priv->ioaddr, priv->rx_riwt);
 603
 604         return 0;
 605 }
 606
 607 static const struct ethtool_ops stmmac_ethtool_ops = {
 608         .begin = stmmac_check_if_running,
 609         .get_drvinfo = stmmac_ethtool_getdrvinfo,
 610         .get_settings = stmmac_ethtool_getsettings,
 611         .set_settings = stmmac_ethtool_setsettings,
 612         .get_msglevel = stmmac_ethtool_getmsglevel,
 613         .set_msglevel = stmmac_ethtool_setmsglevel,
 614         .get_regs = stmmac_ethtool_gregs,
 615         .get_regs_len = stmmac_ethtool_get_regs_len,
 616         .get_link = ethtool_op_get_link,
 617         .get_pauseparam = stmmac_get_pauseparam,
 618         .set_pauseparam = stmmac_set_pauseparam,
 619         .get_ethtool_stats = stmmac_get_ethtool_stats,
 620         .get_strings = stmmac_get_strings,
 621         .get_wol = stmmac_get_wol,
 622         .set_wol = stmmac_set_wol,
 623         .get_eee = stmmac_ethtool_op_get_eee,
 624         .set_eee = stmmac_ethtool_op_set_eee,
 625         .get_sset_count = stmmac_get_sset_count,
 626         .get_ts_info = ethtool_op_get_ts_info,
 627         .get_coalesce = stmmac_get_coalesce,
 628         .set_coalesce = stmmac_set_coalesce,
 629 };
 630
 631 void stmmac_set_ethtool_ops(struct net_device *netdev)
 632 {
 633         SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
 634 }