SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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_lenght),
  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         return;
 106 }
 107
 108 int stmmac_ethtool_getsettings(struct net_device *dev, 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 int stmmac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 131 {
 132         struct stmmac_priv *priv = netdev_priv(dev);
 133         struct phy_device *phy = priv->phydev;
 134         int rc;
 135
 136         spin_lock(&priv->lock);
 137         rc = phy_ethtool_sset(phy, cmd);
 138         spin_unlock(&priv->lock);
 139
 140         return rc;
 141 }
 142
 143 u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
 144 {
 145         struct stmmac_priv *priv = netdev_priv(dev);
 146         return priv->msg_enable;
 147 }
 148
 149 void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
 150 {
 151         struct stmmac_priv *priv = netdev_priv(dev);
 152         priv->msg_enable = level;
 153
 154 }
 155
 156 int stmmac_check_if_running(struct net_device *dev)
 157 {
 158         if (!netif_running(dev))
 159                 return -EBUSY;
 160         return 0;
 161 }
 162
 163 int stmmac_ethtool_get_regs_len(struct net_device *dev)
 164 {
 165         return REG_SPACE_SIZE;
 166 }
 167
 168 void stmmac_ethtool_gregs(struct net_device *dev,
 169                           struct ethtool_regs *regs, void *space)
 170 {
 171         int i;
 172         u32 *reg_space = (u32 *) space;
 173
 174         struct stmmac_priv *priv = netdev_priv(dev);
 175
 176         memset(reg_space, 0x0, REG_SPACE_SIZE);
 177
 178         if (!priv->is_gmac) {
 179                 /* MAC registers */
 180                 for (i = 0; i < 12; i++)
 181                         reg_space[i] = readl(dev->base_addr + (i * 4));
 182                 /* DMA registers */
 183                 for (i = 0; i < 9; i++)
 184                         reg_space[i + 12] =
 185                             readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
 186                 reg_space[22] = readl(dev->base_addr + DMA_CUR_TX_BUF_ADDR);
 187                 reg_space[23] = readl(dev->base_addr + DMA_CUR_RX_BUF_ADDR);
 188         } else {
 189                 /* MAC registers */
 190                 for (i = 0; i < 55; i++)
 191                         reg_space[i] = readl(dev->base_addr + (i * 4));
 192                 /* DMA registers */
 193                 for (i = 0; i < 22; i++)
 194                         reg_space[i + 55] =
 195                             readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
 196         }
 197
 198         return;
 199 }
 200
 201 int stmmac_ethtool_set_tx_csum(struct net_device *netdev, u32 data)
 202 {
 203         if (data)
 204                 netdev->features |= NETIF_F_HW_CSUM;
 205         else
 206                 netdev->features &= ~NETIF_F_HW_CSUM;
 207
 208         return 0;
 209 }
 210
 211 u32 stmmac_ethtool_get_rx_csum(struct net_device *dev)
 212 {
 213         struct stmmac_priv *priv = netdev_priv(dev);
 214
 215         return priv->rx_csum;
 216 }
 217
 218 static void
 219 stmmac_get_pauseparam(struct net_device *netdev,
 220                       struct ethtool_pauseparam *pause)
 221 {
 222         struct stmmac_priv *priv = netdev_priv(netdev);
 223
 224         spin_lock(&priv->lock);
 225
 226         pause->rx_pause = 0;
 227         pause->tx_pause = 0;
 228         pause->autoneg = priv->phydev->autoneg;
 229
 230         if (priv->flow_ctrl & FLOW_RX)
 231                 pause->rx_pause = 1;
 232         if (priv->flow_ctrl & FLOW_TX)
 233                 pause->tx_pause = 1;
 234
 235         spin_unlock(&priv->lock);
 236         return;
 237 }
 238
 239 static int
 240 stmmac_set_pauseparam(struct net_device *netdev,
 241                       struct ethtool_pauseparam *pause)
 242 {
 243         struct stmmac_priv *priv = netdev_priv(netdev);
 244         struct phy_device *phy = priv->phydev;
 245         int new_pause = FLOW_OFF;
 246         int ret = 0;
 247
 248         spin_lock(&priv->lock);
 249
 250         if (pause->rx_pause)
 251                 new_pause |= FLOW_RX;
 252         if (pause->tx_pause)
 253                 new_pause |= FLOW_TX;
 254
 255         priv->flow_ctrl = new_pause;
 256
 257         if (phy->autoneg) {
 258                 if (netif_running(netdev)) {
 259                         struct ethtool_cmd cmd;
 260                         /* auto-negotiation automatically restarted */
 261                         cmd.cmd = ETHTOOL_NWAY_RST;
 262                         cmd.supported = phy->supported;
 263                         cmd.advertising = phy->advertising;
 264                         cmd.autoneg = phy->autoneg;
 265                         cmd.speed = phy->speed;
 266                         cmd.duplex = phy->duplex;
 267                         cmd.phy_address = phy->addr;
 268                         ret = phy_ethtool_sset(phy, &cmd);
 269                 }
 270         } else {
 271                 unsigned long ioaddr = netdev->base_addr;
 272                 priv->hw->mac->flow_ctrl(ioaddr, phy->duplex,
 273                                          priv->flow_ctrl, priv->pause);
 274         }
 275         spin_unlock(&priv->lock);
 276         return ret;
 277 }
 278
 279 static void stmmac_get_ethtool_stats(struct net_device *dev,
 280                                  struct ethtool_stats *dummy, u64 *data)
 281 {
 282         struct stmmac_priv *priv = netdev_priv(dev);
 283         unsigned long ioaddr = dev->base_addr;
 284         int i;
 285
 286         /* Update HW stats if supported */
 287         priv->hw->dma->dma_diagnostic_fr(&dev->stats, (void *) &priv->xstats,
 288                                          ioaddr);
 289
 290         for (i = 0; i < STMMAC_STATS_LEN; i++) {
 291                 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
 292                 data[i] = (stmmac_gstrings_stats[i].sizeof_stat ==
 293                 sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
 294         }
 295
 296         return;
 297 }
 298
 299 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
 300 {
 301         switch (sset) {
 302         case ETH_SS_STATS:
 303                 return STMMAC_STATS_LEN;
 304         default:
 305                 return -EOPNOTSUPP;
 306         }
 307 }
 308
 309 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 310 {
 311         int i;
 312         u8 *p = data;
 313
 314         switch (stringset) {
 315         case ETH_SS_STATS:
 316                 for (i = 0; i < STMMAC_STATS_LEN; i++) {
 317                         memcpy(p, stmmac_gstrings_stats[i].stat_string,
 318                                 ETH_GSTRING_LEN);
 319                         p += ETH_GSTRING_LEN;
 320                 }
 321                 break;
 322         default:
 323                 WARN_ON(1);
 324                 break;
 325         }
 326         return;
 327 }
 328
 329 /* Currently only support WOL through Magic packet. */
 330 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 331 {
 332         struct stmmac_priv *priv = netdev_priv(dev);
 333
 334         spin_lock_irq(&priv->lock);
 335         if (priv->wolenabled == PMT_SUPPORTED) {
 336                 wol->supported = WAKE_MAGIC;
 337                 wol->wolopts = priv->wolopts;
 338         }
 339         spin_unlock_irq(&priv->lock);
 340 }
 341
 342 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 343 {
 344         struct stmmac_priv *priv = netdev_priv(dev);
 345         u32 support = WAKE_MAGIC;
 346
 347         if (priv->wolenabled == PMT_NOT_SUPPORTED)
 348                 return -EINVAL;
 349
 350         if (wol->wolopts & ~support)
 351                 return -EINVAL;
 352
 353         if (wol->wolopts == 0)
 354                 device_set_wakeup_enable(priv->device, 0);
 355         else
 356                 device_set_wakeup_enable(priv->device, 1);
 357
 358         spin_lock_irq(&priv->lock);
 359         priv->wolopts = wol->wolopts;
 360         spin_unlock_irq(&priv->lock);
 361
 362         return 0;
 363 }
 364
 365 static struct ethtool_ops stmmac_ethtool_ops = {
 366         .begin = stmmac_check_if_running,
 367         .get_drvinfo = stmmac_ethtool_getdrvinfo,
 368         .get_settings = stmmac_ethtool_getsettings,
 369         .set_settings = stmmac_ethtool_setsettings,
 370         .get_msglevel = stmmac_ethtool_getmsglevel,
 371         .set_msglevel = stmmac_ethtool_setmsglevel,
 372         .get_regs = stmmac_ethtool_gregs,
 373         .get_regs_len = stmmac_ethtool_get_regs_len,
 374         .get_link = ethtool_op_get_link,
 375         .get_rx_csum = stmmac_ethtool_get_rx_csum,
 376         .get_tx_csum = ethtool_op_get_tx_csum,
 377         .set_tx_csum = stmmac_ethtool_set_tx_csum,
 378         .get_sg = ethtool_op_get_sg,
 379         .set_sg = ethtool_op_set_sg,
 380         .get_pauseparam = stmmac_get_pauseparam,
 381         .set_pauseparam = stmmac_set_pauseparam,
 382         .get_ethtool_stats = stmmac_get_ethtool_stats,
 383         .get_strings = stmmac_get_strings,
 384         .get_wol = stmmac_get_wol,
 385         .set_wol = stmmac_set_wol,
 386         .get_sset_count = stmmac_get_sset_count,
 387 #ifdef NETIF_F_TSO
 388         .get_tso = ethtool_op_get_tso,
 389         .set_tso = ethtool_op_set_tso,
 390 #endif
 391 };
 392
 393 void stmmac_set_ethtool_ops(struct net_device *netdev)
 394 {
 395         SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
 396 }