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         /* Extended RDES status */
 112         STMMAC_STAT(ip_hdr_err),
 113         STMMAC_STAT(ip_payload_err),
 114         STMMAC_STAT(ip_csum_bypassed),
 115         STMMAC_STAT(ipv4_pkt_rcvd),
 116         STMMAC_STAT(ipv6_pkt_rcvd),
 117         STMMAC_STAT(rx_msg_type_ext_no_ptp),
 118         STMMAC_STAT(rx_msg_type_sync),
 119         STMMAC_STAT(rx_msg_type_follow_up),
 120         STMMAC_STAT(rx_msg_type_delay_req),
 121         STMMAC_STAT(rx_msg_type_delay_resp),
 122         STMMAC_STAT(rx_msg_type_pdelay_req),
 123         STMMAC_STAT(rx_msg_type_pdelay_resp),
 124         STMMAC_STAT(rx_msg_type_pdelay_follow_up),
 125         STMMAC_STAT(ptp_frame_type),
 126         STMMAC_STAT(ptp_ver),
 127         STMMAC_STAT(timestamp_dropped),
 128         STMMAC_STAT(av_pkt_rcvd),
 129         STMMAC_STAT(av_tagged_pkt_rcvd),
 130         STMMAC_STAT(vlan_tag_priority_val),
 131         STMMAC_STAT(l3_filter_match),
 132         STMMAC_STAT(l4_filter_match),
 133         STMMAC_STAT(l3_l4_filter_no_match),
 134 };
 135 #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
 136
 137 /* HW MAC Management counters (if supported) */
 138 #define STMMAC_MMC_STAT(m)      \
 139         { #m, FIELD_SIZEOF(struct stmmac_counters, m),  \
 140         offsetof(struct stmmac_priv, mmc.m)}
 141
 142 static const struct stmmac_stats stmmac_mmc[] = {
 143         STMMAC_MMC_STAT(mmc_tx_octetcount_gb),
 144         STMMAC_MMC_STAT(mmc_tx_framecount_gb),
 145         STMMAC_MMC_STAT(mmc_tx_broadcastframe_g),
 146         STMMAC_MMC_STAT(mmc_tx_multicastframe_g),
 147         STMMAC_MMC_STAT(mmc_tx_64_octets_gb),
 148         STMMAC_MMC_STAT(mmc_tx_65_to_127_octets_gb),
 149         STMMAC_MMC_STAT(mmc_tx_128_to_255_octets_gb),
 150         STMMAC_MMC_STAT(mmc_tx_256_to_511_octets_gb),
 151         STMMAC_MMC_STAT(mmc_tx_512_to_1023_octets_gb),
 152         STMMAC_MMC_STAT(mmc_tx_1024_to_max_octets_gb),
 153         STMMAC_MMC_STAT(mmc_tx_unicast_gb),
 154         STMMAC_MMC_STAT(mmc_tx_multicast_gb),
 155         STMMAC_MMC_STAT(mmc_tx_broadcast_gb),
 156         STMMAC_MMC_STAT(mmc_tx_underflow_error),
 157         STMMAC_MMC_STAT(mmc_tx_singlecol_g),
 158         STMMAC_MMC_STAT(mmc_tx_multicol_g),
 159         STMMAC_MMC_STAT(mmc_tx_deferred),
 160         STMMAC_MMC_STAT(mmc_tx_latecol),
 161         STMMAC_MMC_STAT(mmc_tx_exesscol),
 162         STMMAC_MMC_STAT(mmc_tx_carrier_error),
 163         STMMAC_MMC_STAT(mmc_tx_octetcount_g),
 164         STMMAC_MMC_STAT(mmc_tx_framecount_g),
 165         STMMAC_MMC_STAT(mmc_tx_excessdef),
 166         STMMAC_MMC_STAT(mmc_tx_pause_frame),
 167         STMMAC_MMC_STAT(mmc_tx_vlan_frame_g),
 168         STMMAC_MMC_STAT(mmc_rx_framecount_gb),
 169         STMMAC_MMC_STAT(mmc_rx_octetcount_gb),
 170         STMMAC_MMC_STAT(mmc_rx_octetcount_g),
 171         STMMAC_MMC_STAT(mmc_rx_broadcastframe_g),
 172         STMMAC_MMC_STAT(mmc_rx_multicastframe_g),
 173         STMMAC_MMC_STAT(mmc_rx_crc_errror),
 174         STMMAC_MMC_STAT(mmc_rx_align_error),
 175         STMMAC_MMC_STAT(mmc_rx_run_error),
 176         STMMAC_MMC_STAT(mmc_rx_jabber_error),
 177         STMMAC_MMC_STAT(mmc_rx_undersize_g),
 178         STMMAC_MMC_STAT(mmc_rx_oversize_g),
 179         STMMAC_MMC_STAT(mmc_rx_64_octets_gb),
 180         STMMAC_MMC_STAT(mmc_rx_65_to_127_octets_gb),
 181         STMMAC_MMC_STAT(mmc_rx_128_to_255_octets_gb),
 182         STMMAC_MMC_STAT(mmc_rx_256_to_511_octets_gb),
 183         STMMAC_MMC_STAT(mmc_rx_512_to_1023_octets_gb),
 184         STMMAC_MMC_STAT(mmc_rx_1024_to_max_octets_gb),
 185         STMMAC_MMC_STAT(mmc_rx_unicast_g),
 186         STMMAC_MMC_STAT(mmc_rx_length_error),
 187         STMMAC_MMC_STAT(mmc_rx_autofrangetype),
 188         STMMAC_MMC_STAT(mmc_rx_pause_frames),
 189         STMMAC_MMC_STAT(mmc_rx_fifo_overflow),
 190         STMMAC_MMC_STAT(mmc_rx_vlan_frames_gb),
 191         STMMAC_MMC_STAT(mmc_rx_watchdog_error),
 192         STMMAC_MMC_STAT(mmc_rx_ipc_intr_mask),
 193         STMMAC_MMC_STAT(mmc_rx_ipc_intr),
 194         STMMAC_MMC_STAT(mmc_rx_ipv4_gd),
 195         STMMAC_MMC_STAT(mmc_rx_ipv4_hderr),
 196         STMMAC_MMC_STAT(mmc_rx_ipv4_nopay),
 197         STMMAC_MMC_STAT(mmc_rx_ipv4_frag),
 198         STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl),
 199         STMMAC_MMC_STAT(mmc_rx_ipv4_gd_octets),
 200         STMMAC_MMC_STAT(mmc_rx_ipv4_hderr_octets),
 201         STMMAC_MMC_STAT(mmc_rx_ipv4_nopay_octets),
 202         STMMAC_MMC_STAT(mmc_rx_ipv4_frag_octets),
 203         STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl_octets),
 204         STMMAC_MMC_STAT(mmc_rx_ipv6_gd_octets),
 205         STMMAC_MMC_STAT(mmc_rx_ipv6_hderr_octets),
 206         STMMAC_MMC_STAT(mmc_rx_ipv6_nopay_octets),
 207         STMMAC_MMC_STAT(mmc_rx_ipv6_gd),
 208         STMMAC_MMC_STAT(mmc_rx_ipv6_hderr),
 209         STMMAC_MMC_STAT(mmc_rx_ipv6_nopay),
 210         STMMAC_MMC_STAT(mmc_rx_udp_gd),
 211         STMMAC_MMC_STAT(mmc_rx_udp_err),
 212         STMMAC_MMC_STAT(mmc_rx_tcp_gd),
 213         STMMAC_MMC_STAT(mmc_rx_tcp_err),
 214         STMMAC_MMC_STAT(mmc_rx_icmp_gd),
 215         STMMAC_MMC_STAT(mmc_rx_icmp_err),
 216         STMMAC_MMC_STAT(mmc_rx_udp_gd_octets),
 217         STMMAC_MMC_STAT(mmc_rx_udp_err_octets),
 218         STMMAC_MMC_STAT(mmc_rx_tcp_gd_octets),
 219         STMMAC_MMC_STAT(mmc_rx_tcp_err_octets),
 220         STMMAC_MMC_STAT(mmc_rx_icmp_gd_octets),
 221         STMMAC_MMC_STAT(mmc_rx_icmp_err_octets),
 222 };
 223 #define STMMAC_MMC_STATS_LEN ARRAY_SIZE(stmmac_mmc)
 224
 225 static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
 226                                       struct ethtool_drvinfo *info)
 227 {
 228         struct stmmac_priv *priv = netdev_priv(dev);
 229
 230         if (priv->plat->has_gmac)
 231                 strlcpy(info->driver, GMAC_ETHTOOL_NAME, sizeof(info->driver));
 232         else
 233                 strlcpy(info->driver, MAC100_ETHTOOL_NAME,
 234                         sizeof(info->driver));
 235
 236         strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
 237 }
 238
 239 static int stmmac_ethtool_getsettings(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         if (phy == NULL) {
 246                 pr_err("%s: %s: PHY is not registered\n",
 247                        __func__, dev->name);
 248                 return -ENODEV;
 249         }
 250         if (!netif_running(dev)) {
 251                 pr_err("%s: interface is disabled: we cannot track "
 252                 "link speed / duplex setting\n", dev->name);
 253                 return -EBUSY;
 254         }
 255         cmd->transceiver = XCVR_INTERNAL;
 256         spin_lock_irq(&priv->lock);
 257         rc = phy_ethtool_gset(phy, cmd);
 258         spin_unlock_irq(&priv->lock);
 259         return rc;
 260 }
 261
 262 static int stmmac_ethtool_setsettings(struct net_device *dev,
 263                                       struct ethtool_cmd *cmd)
 264 {
 265         struct stmmac_priv *priv = netdev_priv(dev);
 266         struct phy_device *phy = priv->phydev;
 267         int rc;
 268
 269         spin_lock(&priv->lock);
 270         rc = phy_ethtool_sset(phy, cmd);
 271         spin_unlock(&priv->lock);
 272
 273         return rc;
 274 }
 275
 276 static u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
 277 {
 278         struct stmmac_priv *priv = netdev_priv(dev);
 279         return priv->msg_enable;
 280 }
 281
 282 static void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
 283 {
 284         struct stmmac_priv *priv = netdev_priv(dev);
 285         priv->msg_enable = level;
 286
 287 }
 288
 289 static int stmmac_check_if_running(struct net_device *dev)
 290 {
 291         if (!netif_running(dev))
 292                 return -EBUSY;
 293         return 0;
 294 }
 295
 296 static int stmmac_ethtool_get_regs_len(struct net_device *dev)
 297 {
 298         return REG_SPACE_SIZE;
 299 }
 300
 301 static void stmmac_ethtool_gregs(struct net_device *dev,
 302                           struct ethtool_regs *regs, void *space)
 303 {
 304         int i;
 305         u32 *reg_space = (u32 *) space;
 306
 307         struct stmmac_priv *priv = netdev_priv(dev);
 308
 309         memset(reg_space, 0x0, REG_SPACE_SIZE);
 310
 311         if (!priv->plat->has_gmac) {
 312                 /* MAC registers */
 313                 for (i = 0; i < 12; i++)
 314                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 315                 /* DMA registers */
 316                 for (i = 0; i < 9; i++)
 317                         reg_space[i + 12] =
 318                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 319                 reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
 320                 reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
 321         } else {
 322                 /* MAC registers */
 323                 for (i = 0; i < 55; i++)
 324                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 325                 /* DMA registers */
 326                 for (i = 0; i < 22; i++)
 327                         reg_space[i + 55] =
 328                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 329         }
 330 }
 331
 332 static void
 333 stmmac_get_pauseparam(struct net_device *netdev,
 334                       struct ethtool_pauseparam *pause)
 335 {
 336         struct stmmac_priv *priv = netdev_priv(netdev);
 337
 338         spin_lock(&priv->lock);
 339
 340         pause->rx_pause = 0;
 341         pause->tx_pause = 0;
 342         pause->autoneg = priv->phydev->autoneg;
 343
 344         if (priv->flow_ctrl & FLOW_RX)
 345                 pause->rx_pause = 1;
 346         if (priv->flow_ctrl & FLOW_TX)
 347                 pause->tx_pause = 1;
 348
 349         spin_unlock(&priv->lock);
 350 }
 351
 352 static int
 353 stmmac_set_pauseparam(struct net_device *netdev,
 354                       struct ethtool_pauseparam *pause)
 355 {
 356         struct stmmac_priv *priv = netdev_priv(netdev);
 357         struct phy_device *phy = priv->phydev;
 358         int new_pause = FLOW_OFF;
 359         int ret = 0;
 360
 361         spin_lock(&priv->lock);
 362
 363         if (pause->rx_pause)
 364                 new_pause |= FLOW_RX;
 365         if (pause->tx_pause)
 366                 new_pause |= FLOW_TX;
 367
 368         priv->flow_ctrl = new_pause;
 369         phy->autoneg = pause->autoneg;
 370
 371         if (phy->autoneg) {
 372                 if (netif_running(netdev))
 373                         ret = phy_start_aneg(phy);
 374         } else
 375                 priv->hw->mac->flow_ctrl(priv->ioaddr, phy->duplex,
 376                                          priv->flow_ctrl, priv->pause);
 377         spin_unlock(&priv->lock);
 378         return ret;
 379 }
 380
 381 static void stmmac_get_ethtool_stats(struct net_device *dev,
 382                                  struct ethtool_stats *dummy, u64 *data)
 383 {
 384         struct stmmac_priv *priv = netdev_priv(dev);
 385         int i, j = 0;
 386
 387         /* Update the DMA HW counters for dwmac10/100 */
 388         if (!priv->plat->has_gmac)
 389                 priv->hw->dma->dma_diagnostic_fr(&dev->stats,
 390                                                  (void *) &priv->xstats,
 391                                                  priv->ioaddr);
 392         else {
 393                 /* If supported, for new GMAC chips expose the MMC counters */
 394                 if (priv->dma_cap.rmon) {
 395                         dwmac_mmc_read(priv->ioaddr, &priv->mmc);
 396
 397                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
 398                                 char *p;
 399                                 p = (char *)priv + stmmac_mmc[i].stat_offset;
 400
 401                                 data[j++] = (stmmac_mmc[i].sizeof_stat ==
 402                                              sizeof(u64)) ? (*(u64 *)p) :
 403                                              (*(u32 *)p);
 404                         }
 405                 }
 406                 if (priv->eee_enabled) {
 407                         int val = phy_get_eee_err(priv->phydev);
 408                         if (val)
 409                                 priv->xstats.phy_eee_wakeup_error_n = val;
 410                 }
 411         }
 412         for (i = 0; i < STMMAC_STATS_LEN; i++) {
 413                 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
 414                 data[j++] = (stmmac_gstrings_stats[i].sizeof_stat ==
 415                              sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
 416         }
 417 }
 418
 419 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
 420 {
 421         struct stmmac_priv *priv = netdev_priv(netdev);
 422         int len;
 423
 424         switch (sset) {
 425         case ETH_SS_STATS:
 426                 len = STMMAC_STATS_LEN;
 427
 428                 if (priv->dma_cap.rmon)
 429                         len += STMMAC_MMC_STATS_LEN;
 430
 431                 return len;
 432         default:
 433                 return -EOPNOTSUPP;
 434         }
 435 }
 436
 437 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 438 {
 439         int i;
 440         u8 *p = data;
 441         struct stmmac_priv *priv = netdev_priv(dev);
 442
 443         switch (stringset) {
 444         case ETH_SS_STATS:
 445                 if (priv->dma_cap.rmon)
 446                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
 447                                 memcpy(p, stmmac_mmc[i].stat_string,
 448                                        ETH_GSTRING_LEN);
 449                                 p += ETH_GSTRING_LEN;
 450                         }
 451                 for (i = 0; i < STMMAC_STATS_LEN; i++) {
 452                         memcpy(p, stmmac_gstrings_stats[i].stat_string,
 453                                 ETH_GSTRING_LEN);
 454                         p += ETH_GSTRING_LEN;
 455                 }
 456                 break;
 457         default:
 458                 WARN_ON(1);
 459                 break;
 460         }
 461 }
 462
 463 /* Currently only support WOL through Magic packet. */
 464 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 465 {
 466         struct stmmac_priv *priv = netdev_priv(dev);
 467
 468         spin_lock_irq(&priv->lock);
 469         if (device_can_wakeup(priv->device)) {
 470                 wol->supported = WAKE_MAGIC | WAKE_UCAST;
 471                 wol->wolopts = priv->wolopts;
 472         }
 473         spin_unlock_irq(&priv->lock);
 474 }
 475
 476 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 477 {
 478         struct stmmac_priv *priv = netdev_priv(dev);
 479         u32 support = WAKE_MAGIC | WAKE_UCAST;
 480
 481         /* By default almost all GMAC devices support the WoL via
 482          * magic frame but we can disable it if the HW capability
 483          * register shows no support for pmt_magic_frame. */
 484         if ((priv->hw_cap_support) && (!priv->dma_cap.pmt_magic_frame))
 485                 wol->wolopts &= ~WAKE_MAGIC;
 486
 487         if (!device_can_wakeup(priv->device))
 488                 return -EINVAL;
 489
 490         if (wol->wolopts & ~support)
 491                 return -EINVAL;
 492
 493         if (wol->wolopts) {
 494                 pr_info("stmmac: wakeup enable\n");
 495                 device_set_wakeup_enable(priv->device, 1);
 496                 enable_irq_wake(priv->wol_irq);
 497         } else {
 498                 device_set_wakeup_enable(priv->device, 0);
 499                 disable_irq_wake(priv->wol_irq);
 500         }
 501
 502         spin_lock_irq(&priv->lock);
 503         priv->wolopts = wol->wolopts;
 504         spin_unlock_irq(&priv->lock);
 505
 506         return 0;
 507 }
 508
 509 static int stmmac_ethtool_op_get_eee(struct net_device *dev,
 510                                      struct ethtool_eee *edata)
 511 {
 512         struct stmmac_priv *priv = netdev_priv(dev);
 513
 514         if (!priv->dma_cap.eee)
 515                 return -EOPNOTSUPP;
 516
 517         edata->eee_enabled = priv->eee_enabled;
 518         edata->eee_active = priv->eee_active;
 519         edata->tx_lpi_timer = priv->tx_lpi_timer;
 520
 521         return phy_ethtool_get_eee(priv->phydev, edata);
 522 }
 523
 524 static int stmmac_ethtool_op_set_eee(struct net_device *dev,
 525                                      struct ethtool_eee *edata)
 526 {
 527         struct stmmac_priv *priv = netdev_priv(dev);
 528
 529         priv->eee_enabled = edata->eee_enabled;
 530
 531         if (!priv->eee_enabled)
 532                 stmmac_disable_eee_mode(priv);
 533         else {
 534                 /* We are asking for enabling the EEE but it is safe
 535                  * to verify all by invoking the eee_init function.
 536                  * In case of failure it will return an error.
 537                  */
 538                 priv->eee_enabled = stmmac_eee_init(priv);
 539                 if (!priv->eee_enabled)
 540                         return -EOPNOTSUPP;
 541
 542                 /* Do not change tx_lpi_timer in case of failure */
 543                 priv->tx_lpi_timer = edata->tx_lpi_timer;
 544         }
 545
 546         return phy_ethtool_set_eee(priv->phydev, edata);
 547 }
 548
 549 static u32 stmmac_usec2riwt(u32 usec, struct stmmac_priv *priv)
 550 {
 551         unsigned long clk = clk_get_rate(priv->stmmac_clk);
 552
 553         if (!clk)
 554                 return 0;
 555
 556         return (usec * (clk / 1000000)) / 256;
 557 }
 558
 559 static u32 stmmac_riwt2usec(u32 riwt, struct stmmac_priv *priv)
 560 {
 561         unsigned long clk = clk_get_rate(priv->stmmac_clk);
 562
 563         if (!clk)
 564                 return 0;
 565
 566         return (riwt * 256) / (clk / 1000000);
 567 }
 568
 569 static int stmmac_get_coalesce(struct net_device *dev,
 570                                struct ethtool_coalesce *ec)
 571 {
 572         struct stmmac_priv *priv = netdev_priv(dev);
 573
 574         ec->tx_coalesce_usecs = priv->tx_coal_timer;
 575         ec->tx_max_coalesced_frames = priv->tx_coal_frames;
 576
 577         if (priv->use_riwt)
 578                 ec->rx_coalesce_usecs = stmmac_riwt2usec(priv->rx_riwt, priv);
 579
 580         return 0;
 581 }
 582
 583 static int stmmac_set_coalesce(struct net_device *dev,
 584                                struct ethtool_coalesce *ec)
 585 {
 586         struct stmmac_priv *priv = netdev_priv(dev);
 587         unsigned int rx_riwt;
 588
 589         /* Check not supported parameters  */
 590         if ((ec->rx_max_coalesced_frames) || (ec->rx_coalesce_usecs_irq) ||
 591             (ec->rx_max_coalesced_frames_irq) || (ec->tx_coalesce_usecs_irq) ||
 592             (ec->use_adaptive_rx_coalesce) || (ec->use_adaptive_tx_coalesce) ||
 593             (ec->pkt_rate_low) || (ec->rx_coalesce_usecs_low) ||
 594             (ec->rx_max_coalesced_frames_low) || (ec->tx_coalesce_usecs_high) ||
 595             (ec->tx_max_coalesced_frames_low) || (ec->pkt_rate_high) ||
 596             (ec->tx_coalesce_usecs_low) || (ec->rx_coalesce_usecs_high) ||
 597             (ec->rx_max_coalesced_frames_high) ||
 598             (ec->tx_max_coalesced_frames_irq) ||
 599             (ec->stats_block_coalesce_usecs) ||
 600             (ec->tx_max_coalesced_frames_high) || (ec->rate_sample_interval))
 601                 return -EOPNOTSUPP;
 602
 603         if (ec->rx_coalesce_usecs == 0)
 604                 return -EINVAL;
 605
 606         if ((ec->tx_coalesce_usecs == 0) &&
 607             (ec->tx_max_coalesced_frames == 0))
 608                 return -EINVAL;
 609
 610         if ((ec->tx_coalesce_usecs > STMMAC_COAL_TX_TIMER) ||
 611             (ec->tx_max_coalesced_frames > STMMAC_TX_MAX_FRAMES))
 612                 return -EINVAL;
 613
 614         rx_riwt = stmmac_usec2riwt(ec->rx_coalesce_usecs, priv);
 615
 616         if ((rx_riwt > MAX_DMA_RIWT) || (rx_riwt < MIN_DMA_RIWT))
 617                 return -EINVAL;
 618         else if (!priv->use_riwt)
 619                 return -EOPNOTSUPP;
 620
 621         /* Only copy relevant parameters, ignore all others. */
 622         priv->tx_coal_frames = ec->tx_max_coalesced_frames;
 623         priv->tx_coal_timer = ec->tx_coalesce_usecs;
 624         priv->rx_riwt = rx_riwt;
 625         priv->hw->dma->rx_watchdog(priv->ioaddr, priv->rx_riwt);
 626
 627         return 0;
 628 }
 629
 630 static const struct ethtool_ops stmmac_ethtool_ops = {
 631         .begin = stmmac_check_if_running,
 632         .get_drvinfo = stmmac_ethtool_getdrvinfo,
 633         .get_settings = stmmac_ethtool_getsettings,
 634         .set_settings = stmmac_ethtool_setsettings,
 635         .get_msglevel = stmmac_ethtool_getmsglevel,
 636         .set_msglevel = stmmac_ethtool_setmsglevel,
 637         .get_regs = stmmac_ethtool_gregs,
 638         .get_regs_len = stmmac_ethtool_get_regs_len,
 639         .get_link = ethtool_op_get_link,
 640         .get_pauseparam = stmmac_get_pauseparam,
 641         .set_pauseparam = stmmac_set_pauseparam,
 642         .get_ethtool_stats = stmmac_get_ethtool_stats,
 643         .get_strings = stmmac_get_strings,
 644         .get_wol = stmmac_get_wol,
 645         .set_wol = stmmac_set_wol,
 646         .get_eee = stmmac_ethtool_op_get_eee,
 647         .set_eee = stmmac_ethtool_op_set_eee,
 648         .get_sset_count = stmmac_get_sset_count,
 649         .get_ts_info = ethtool_op_get_ts_info,
 650         .get_coalesce = stmmac_get_coalesce,
 651         .set_coalesce = stmmac_set_coalesce,
 652 };
 653
 654 void stmmac_set_ethtool_ops(struct net_device *netdev)
 655 {
 656         SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
 657 }