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