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