drivers/net/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/mii.h>
  28 #include <linux/phy.h>
  29
  30 #include "stmmac.h"
  31 #include "dwmac_dma.h"
  32
  33 #define REG_SPACE_SIZE  0x1054
  34 #define MAC100_ETHTOOL_NAME     "st_mac100"
  35 #define GMAC_ETHTOOL_NAME       "st_gmac"
  36
  37 struct stmmac_stats {
  38         char stat_string[ETH_GSTRING_LEN];
  39         int sizeof_stat;
  40         int stat_offset;
  41 };
  42
  43 #define STMMAC_STAT(m)  \
  44         { #m, FIELD_SIZEOF(struct stmmac_extra_stats, m),       \
  45         offsetof(struct stmmac_priv, xstats.m)}
  46
  47 static const struct  stmmac_stats stmmac_gstrings_stats[] = {
  48         STMMAC_STAT(tx_underflow),
  49         STMMAC_STAT(tx_carrier),
  50         STMMAC_STAT(tx_losscarrier),
  51         STMMAC_STAT(tx_heartbeat),
  52         STMMAC_STAT(tx_deferred),
  53         STMMAC_STAT(tx_vlan),
  54         STMMAC_STAT(rx_vlan),
  55         STMMAC_STAT(tx_jabber),
  56         STMMAC_STAT(tx_frame_flushed),
  57         STMMAC_STAT(tx_payload_error),
  58         STMMAC_STAT(tx_ip_header_error),
  59         STMMAC_STAT(rx_desc),
  60         STMMAC_STAT(rx_partial),
  61         STMMAC_STAT(rx_runt),
  62         STMMAC_STAT(rx_toolong),
  63         STMMAC_STAT(rx_collision),
  64         STMMAC_STAT(rx_crc),
  65         STMMAC_STAT(rx_length),
  66         STMMAC_STAT(rx_mii),
  67         STMMAC_STAT(rx_multicast),
  68         STMMAC_STAT(rx_gmac_overflow),
  69         STMMAC_STAT(rx_watchdog),
  70         STMMAC_STAT(da_rx_filter_fail),
  71         STMMAC_STAT(sa_rx_filter_fail),
  72         STMMAC_STAT(rx_missed_cntr),
  73         STMMAC_STAT(rx_overflow_cntr),
  74         STMMAC_STAT(tx_undeflow_irq),
  75         STMMAC_STAT(tx_process_stopped_irq),
  76         STMMAC_STAT(tx_jabber_irq),
  77         STMMAC_STAT(rx_overflow_irq),
  78         STMMAC_STAT(rx_buf_unav_irq),
  79         STMMAC_STAT(rx_process_stopped_irq),
  80         STMMAC_STAT(rx_watchdog_irq),
  81         STMMAC_STAT(tx_early_irq),
  82         STMMAC_STAT(fatal_bus_error_irq),
  83         STMMAC_STAT(threshold),
  84         STMMAC_STAT(tx_pkt_n),
  85         STMMAC_STAT(rx_pkt_n),
  86         STMMAC_STAT(poll_n),
  87         STMMAC_STAT(sched_timer_n),
  88         STMMAC_STAT(normal_irq_n),
  89 };
  90 #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
  91
  92 void stmmac_ethtool_getdrvinfo(struct net_device *dev,
  93                                struct ethtool_drvinfo *info)
  94 {
  95         struct stmmac_priv *priv = netdev_priv(dev);
  96
  97         if (!priv->is_gmac)
  98                 strcpy(info->driver, MAC100_ETHTOOL_NAME);
  99         else
 100                 strcpy(info->driver, GMAC_ETHTOOL_NAME);
 101
 102         strcpy(info->version, DRV_MODULE_VERSION);
 103         info->fw_version[0] = '\0';
 104         info->n_stats = STMMAC_STATS_LEN;
 105 }
 106
 107 int stmmac_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 108 {
 109         struct stmmac_priv *priv = netdev_priv(dev);
 110         struct phy_device *phy = priv->phydev;
 111         int rc;
 112         if (phy == NULL) {
 113                 pr_err("%s: %s: PHY is not registered\n",
 114                        __func__, dev->name);
 115                 return -ENODEV;
 116         }
 117         if (!netif_running(dev)) {
 118                 pr_err("%s: interface is disabled: we cannot track "
 119                 "link speed / duplex setting\n", dev->name);
 120                 return -EBUSY;
 121         }
 122         cmd->transceiver = XCVR_INTERNAL;
 123         spin_lock_irq(&priv->lock);
 124         rc = phy_ethtool_gset(phy, cmd);
 125         spin_unlock_irq(&priv->lock);
 126         return rc;
 127 }
 128
 129 int stmmac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 130 {
 131         struct stmmac_priv *priv = netdev_priv(dev);
 132         struct phy_device *phy = priv->phydev;
 133         int rc;
 134
 135         spin_lock(&priv->lock);
 136         rc = phy_ethtool_sset(phy, cmd);
 137         spin_unlock(&priv->lock);
 138
 139         return rc;
 140 }
 141
 142 u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
 143 {
 144         struct stmmac_priv *priv = netdev_priv(dev);
 145         return priv->msg_enable;
 146 }
 147
 148 void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
 149 {
 150         struct stmmac_priv *priv = netdev_priv(dev);
 151         priv->msg_enable = level;
 152
 153 }
 154
 155 int stmmac_check_if_running(struct net_device *dev)
 156 {
 157         if (!netif_running(dev))
 158                 return -EBUSY;
 159         return 0;
 160 }
 161
 162 int stmmac_ethtool_get_regs_len(struct net_device *dev)
 163 {
 164         return REG_SPACE_SIZE;
 165 }
 166
 167 void stmmac_ethtool_gregs(struct net_device *dev,
 168                           struct ethtool_regs *regs, void *space)
 169 {
 170         int i;
 171         u32 *reg_space = (u32 *) space;
 172
 173         struct stmmac_priv *priv = netdev_priv(dev);
 174
 175         memset(reg_space, 0x0, REG_SPACE_SIZE);
 176
 177         if (!priv->is_gmac) {
 178                 /* MAC registers */
 179                 for (i = 0; i < 12; i++)
 180                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 181                 /* DMA registers */
 182                 for (i = 0; i < 9; i++)
 183                         reg_space[i + 12] =
 184                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 185                 reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
 186                 reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
 187         } else {
 188                 /* MAC registers */
 189                 for (i = 0; i < 55; i++)
 190                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 191                 /* DMA registers */
 192                 for (i = 0; i < 22; i++)
 193                         reg_space[i + 55] =
 194                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 195         }
 196 }
 197
 198 int stmmac_ethtool_set_tx_csum(struct net_device *netdev, u32 data)
 199 {
 200         if (data)
 201                 netdev->features |= NETIF_F_HW_CSUM;
 202         else
 203                 netdev->features &= ~NETIF_F_HW_CSUM;
 204
 205         return 0;
 206 }
 207
 208 u32 stmmac_ethtool_get_rx_csum(struct net_device *dev)
 209 {
 210         struct stmmac_priv *priv = netdev_priv(dev);
 211
 212         return priv->rx_coe;
 213 }
 214
 215 static void
 216 stmmac_get_pauseparam(struct net_device *netdev,
 217                       struct ethtool_pauseparam *pause)
 218 {
 219         struct stmmac_priv *priv = netdev_priv(netdev);
 220
 221         spin_lock(&priv->lock);
 222
 223         pause->rx_pause = 0;
 224         pause->tx_pause = 0;
 225         pause->autoneg = priv->phydev->autoneg;
 226
 227         if (priv->flow_ctrl & FLOW_RX)
 228                 pause->rx_pause = 1;
 229         if (priv->flow_ctrl & FLOW_TX)
 230                 pause->tx_pause = 1;
 231
 232         spin_unlock(&priv->lock);
 233 }
 234
 235 static int
 236 stmmac_set_pauseparam(struct net_device *netdev,
 237                       struct ethtool_pauseparam *pause)
 238 {
 239         struct stmmac_priv *priv = netdev_priv(netdev);
 240         struct phy_device *phy = priv->phydev;
 241         int new_pause = FLOW_OFF;
 242         int ret = 0;
 243
 244         spin_lock(&priv->lock);
 245
 246         if (pause->rx_pause)
 247                 new_pause |= FLOW_RX;
 248         if (pause->tx_pause)
 249                 new_pause |= FLOW_TX;
 250
 251         priv->flow_ctrl = new_pause;
 252
 253         if (phy->autoneg) {
 254                 if (netif_running(netdev)) {
 255                         struct ethtool_cmd cmd;
 256                         /* auto-negotiation automatically restarted */
 257                         cmd.cmd = ETHTOOL_NWAY_RST;
 258                         cmd.supported = phy->supported;
 259                         cmd.advertising = phy->advertising;
 260                         cmd.autoneg = phy->autoneg;
 261                         cmd.speed = phy->speed;
 262                         cmd.duplex = phy->duplex;
 263                         cmd.phy_address = phy->addr;
 264                         ret = phy_ethtool_sset(phy, &cmd);
 265                 }
 266         } else
 267                 priv->hw->mac->flow_ctrl(priv->ioaddr, phy->duplex,
 268                                          priv->flow_ctrl, priv->pause);
 269         spin_unlock(&priv->lock);
 270         return ret;
 271 }
 272
 273 static void stmmac_get_ethtool_stats(struct net_device *dev,
 274                                  struct ethtool_stats *dummy, u64 *data)
 275 {
 276         struct stmmac_priv *priv = netdev_priv(dev);
 277         int i;
 278
 279         /* Update HW stats if supported */
 280         priv->hw->dma->dma_diagnostic_fr(&dev->stats, (void *) &priv->xstats,
 281                                          priv->ioaddr);
 282
 283         for (i = 0; i < STMMAC_STATS_LEN; i++) {
 284                 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
 285                 data[i] = (stmmac_gstrings_stats[i].sizeof_stat ==
 286                 sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
 287         }
 288 }
 289
 290 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
 291 {
 292         switch (sset) {
 293         case ETH_SS_STATS:
 294                 return STMMAC_STATS_LEN;
 295         default:
 296                 return -EOPNOTSUPP;
 297         }
 298 }
 299
 300 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 301 {
 302         int i;
 303         u8 *p = data;
 304
 305         switch (stringset) {
 306         case ETH_SS_STATS:
 307                 for (i = 0; i < STMMAC_STATS_LEN; i++) {
 308                         memcpy(p, stmmac_gstrings_stats[i].stat_string,
 309                                 ETH_GSTRING_LEN);
 310                         p += ETH_GSTRING_LEN;
 311                 }
 312                 break;
 313         default:
 314                 WARN_ON(1);
 315                 break;
 316         }
 317 }
 318
 319 /* Currently only support WOL through Magic packet. */
 320 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 321 {
 322         struct stmmac_priv *priv = netdev_priv(dev);
 323
 324         spin_lock_irq(&priv->lock);
 325         if (device_can_wakeup(priv->device)) {
 326                 wol->supported = WAKE_MAGIC;
 327                 wol->wolopts = priv->wolopts;
 328         }
 329         spin_unlock_irq(&priv->lock);
 330 }
 331
 332 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 333 {
 334         struct stmmac_priv *priv = netdev_priv(dev);
 335         u32 support = WAKE_MAGIC;
 336
 337         if (!device_can_wakeup(priv->device))
 338                 return -EINVAL;
 339
 340         if (wol->wolopts & ~support)
 341                 return -EINVAL;
 342
 343         if (wol->wolopts) {
 344                 pr_info("stmmac: wakeup enable\n");
 345                 device_set_wakeup_enable(priv->device, 1);
 346                 enable_irq_wake(dev->irq);
 347         } else {
 348                 device_set_wakeup_enable(priv->device, 0);
 349                 disable_irq_wake(dev->irq);
 350         }
 351
 352         spin_lock_irq(&priv->lock);
 353         priv->wolopts = wol->wolopts;
 354         spin_unlock_irq(&priv->lock);
 355
 356         return 0;
 357 }
 358
 359 static struct ethtool_ops stmmac_ethtool_ops = {
 360         .begin = stmmac_check_if_running,
 361         .get_drvinfo = stmmac_ethtool_getdrvinfo,
 362         .get_settings = stmmac_ethtool_getsettings,
 363         .set_settings = stmmac_ethtool_setsettings,
 364         .get_msglevel = stmmac_ethtool_getmsglevel,
 365         .set_msglevel = stmmac_ethtool_setmsglevel,
 366         .get_regs = stmmac_ethtool_gregs,
 367         .get_regs_len = stmmac_ethtool_get_regs_len,
 368         .get_link = ethtool_op_get_link,
 369         .get_rx_csum = stmmac_ethtool_get_rx_csum,
 370         .get_tx_csum = ethtool_op_get_tx_csum,
 371         .set_tx_csum = stmmac_ethtool_set_tx_csum,
 372         .get_sg = ethtool_op_get_sg,
 373         .set_sg = ethtool_op_set_sg,
 374         .get_pauseparam = stmmac_get_pauseparam,
 375         .set_pauseparam = stmmac_set_pauseparam,
 376         .get_ethtool_stats = stmmac_get_ethtool_stats,
 377         .get_strings = stmmac_get_strings,
 378         .get_wol = stmmac_get_wol,
 379         .set_wol = stmmac_set_wol,
 380         .get_sset_count = stmmac_get_sset_count,
 381 #ifdef NETIF_F_TSO
 382         .get_tso = ethtool_op_get_tso,
 383         .set_tso = ethtool_op_set_tso,
 384 #endif
 385 };
 386
 387 void stmmac_set_ethtool_ops(struct net_device *netdev)
 388 {
 389         SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
 390 }