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