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
  32 #define REG_SPACE_SIZE  0x1054
  33 #define MAC100_ETHTOOL_NAME     "st_mac100"
  34 #define GMAC_ETHTOOL_NAME       "st_gmac"
  35
  36 struct stmmac_stats {
  37         char stat_string[ETH_GSTRING_LEN];
  38         int sizeof_stat;
  39         int stat_offset;
  40 };
  41
  42 #define STMMAC_STAT(m)  \
  43         { #m, FIELD_SIZEOF(struct stmmac_extra_stats, m),       \
  44         offsetof(struct stmmac_priv, xstats.m)}
  45
  46 static const struct  stmmac_stats stmmac_gstrings_stats[] = {
  47         STMMAC_STAT(tx_underflow),
  48         STMMAC_STAT(tx_carrier),
  49         STMMAC_STAT(tx_losscarrier),
  50         STMMAC_STAT(tx_heartbeat),
  51         STMMAC_STAT(tx_deferred),
  52         STMMAC_STAT(tx_vlan),
  53         STMMAC_STAT(rx_vlan),
  54         STMMAC_STAT(tx_jabber),
  55         STMMAC_STAT(tx_frame_flushed),
  56         STMMAC_STAT(tx_payload_error),
  57         STMMAC_STAT(tx_ip_header_error),
  58         STMMAC_STAT(rx_desc),
  59         STMMAC_STAT(rx_partial),
  60         STMMAC_STAT(rx_runt),
  61         STMMAC_STAT(rx_toolong),
  62         STMMAC_STAT(rx_collision),
  63         STMMAC_STAT(rx_crc),
  64         STMMAC_STAT(rx_lenght),
  65         STMMAC_STAT(rx_mii),
  66         STMMAC_STAT(rx_multicast),
  67         STMMAC_STAT(rx_gmac_overflow),
  68         STMMAC_STAT(rx_watchdog),
  69         STMMAC_STAT(da_rx_filter_fail),
  70         STMMAC_STAT(sa_rx_filter_fail),
  71         STMMAC_STAT(rx_missed_cntr),
  72         STMMAC_STAT(rx_overflow_cntr),
  73         STMMAC_STAT(tx_undeflow_irq),
  74         STMMAC_STAT(tx_process_stopped_irq),
  75         STMMAC_STAT(tx_jabber_irq),
  76         STMMAC_STAT(rx_overflow_irq),
  77         STMMAC_STAT(rx_buf_unav_irq),
  78         STMMAC_STAT(rx_process_stopped_irq),
  79         STMMAC_STAT(rx_watchdog_irq),
  80         STMMAC_STAT(tx_early_irq),
  81         STMMAC_STAT(fatal_bus_error_irq),
  82         STMMAC_STAT(threshold),
  83         STMMAC_STAT(tx_pkt_n),
  84         STMMAC_STAT(rx_pkt_n),
  85         STMMAC_STAT(poll_n),
  86         STMMAC_STAT(sched_timer_n),
  87         STMMAC_STAT(normal_irq_n),
  88 };
  89 #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
  90
  91 void stmmac_ethtool_getdrvinfo(struct net_device *dev,
  92                                struct ethtool_drvinfo *info)
  93 {
  94         struct stmmac_priv *priv = netdev_priv(dev);
  95
  96         if (!priv->is_gmac)
  97                 strcpy(info->driver, MAC100_ETHTOOL_NAME);
  98         else
  99                 strcpy(info->driver, GMAC_ETHTOOL_NAME);
 100
 101         strcpy(info->version, DRV_MODULE_VERSION);
 102         info->fw_version[0] = '\0';
 103         info->n_stats = STMMAC_STATS_LEN;
 104         return;
 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(dev->base_addr + (i * 4));
 181                 /* DMA registers */
 182                 for (i = 0; i < 9; i++)
 183                         reg_space[i + 12] =
 184                             readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
 185                 reg_space[22] = readl(dev->base_addr + DMA_CUR_TX_BUF_ADDR);
 186                 reg_space[23] = readl(dev->base_addr + DMA_CUR_RX_BUF_ADDR);
 187         } else {
 188                 /* MAC registers */
 189                 for (i = 0; i < 55; i++)
 190                         reg_space[i] = readl(dev->base_addr + (i * 4));
 191                 /* DMA registers */
 192                 for (i = 0; i < 22; i++)
 193                         reg_space[i + 55] =
 194                             readl(dev->base_addr + (DMA_BUS_MODE + (i * 4)));
 195         }
 196
 197         return;
 198 }
 199
 200 int stmmac_ethtool_set_tx_csum(struct net_device *netdev, u32 data)
 201 {
 202         if (data)
 203                 netdev->features |= NETIF_F_HW_CSUM;
 204         else
 205                 netdev->features &= ~NETIF_F_HW_CSUM;
 206
 207         return 0;
 208 }
 209
 210 u32 stmmac_ethtool_get_rx_csum(struct net_device *dev)
 211 {
 212         struct stmmac_priv *priv = netdev_priv(dev);
 213
 214         return priv->rx_csum;
 215 }
 216
 217 static void
 218 stmmac_get_pauseparam(struct net_device *netdev,
 219                       struct ethtool_pauseparam *pause)
 220 {
 221         struct stmmac_priv *priv = netdev_priv(netdev);
 222
 223         spin_lock(&priv->lock);
 224
 225         pause->rx_pause = 0;
 226         pause->tx_pause = 0;
 227         pause->autoneg = priv->phydev->autoneg;
 228
 229         if (priv->flow_ctrl & FLOW_RX)
 230                 pause->rx_pause = 1;
 231         if (priv->flow_ctrl & FLOW_TX)
 232                 pause->tx_pause = 1;
 233
 234         spin_unlock(&priv->lock);
 235         return;
 236 }
 237
 238 static int
 239 stmmac_set_pauseparam(struct net_device *netdev,
 240                       struct ethtool_pauseparam *pause)
 241 {
 242         struct stmmac_priv *priv = netdev_priv(netdev);
 243         struct phy_device *phy = priv->phydev;
 244         int new_pause = FLOW_OFF;
 245         int ret = 0;
 246
 247         spin_lock(&priv->lock);
 248
 249         if (pause->rx_pause)
 250                 new_pause |= FLOW_RX;
 251         if (pause->tx_pause)
 252                 new_pause |= FLOW_TX;
 253
 254         priv->flow_ctrl = new_pause;
 255
 256         if (phy->autoneg) {
 257                 if (netif_running(netdev)) {
 258                         struct ethtool_cmd cmd;
 259                         /* auto-negotiation automatically restarted */
 260                         cmd.cmd = ETHTOOL_NWAY_RST;
 261                         cmd.supported = phy->supported;
 262                         cmd.advertising = phy->advertising;
 263                         cmd.autoneg = phy->autoneg;
 264                         cmd.speed = phy->speed;
 265                         cmd.duplex = phy->duplex;
 266                         cmd.phy_address = phy->addr;
 267                         ret = phy_ethtool_sset(phy, &cmd);
 268                 }
 269         } else {
 270                 unsigned long ioaddr = netdev->base_addr;
 271                 priv->mac_type->ops->flow_ctrl(ioaddr, phy->duplex,
 272                                                priv->flow_ctrl, priv->pause);
 273         }
 274         spin_unlock(&priv->lock);
 275         return ret;
 276 }
 277
 278 static void stmmac_get_ethtool_stats(struct net_device *dev,
 279                                  struct ethtool_stats *dummy, u64 *data)
 280 {
 281         struct stmmac_priv *priv = netdev_priv(dev);
 282         unsigned long ioaddr = dev->base_addr;
 283         int i;
 284
 285         /* Update HW stats if supported */
 286         priv->mac_type->ops->dma_diagnostic_fr(&dev->stats, &priv->xstats,
 287                                                ioaddr);
 288
 289         for (i = 0; i < STMMAC_STATS_LEN; i++) {
 290                 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
 291                 data[i] = (stmmac_gstrings_stats[i].sizeof_stat ==
 292                 sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
 293         }
 294
 295         return;
 296 }
 297
 298 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
 299 {
 300         switch (sset) {
 301         case ETH_SS_STATS:
 302                 return STMMAC_STATS_LEN;
 303         default:
 304                 return -EOPNOTSUPP;
 305         }
 306 }
 307
 308 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 309 {
 310         int i;
 311         u8 *p = data;
 312
 313         switch (stringset) {
 314         case ETH_SS_STATS:
 315                 for (i = 0; i < STMMAC_STATS_LEN; i++) {
 316                         memcpy(p, stmmac_gstrings_stats[i].stat_string,
 317                                 ETH_GSTRING_LEN);
 318                         p += ETH_GSTRING_LEN;
 319                 }
 320                 break;
 321         default:
 322                 WARN_ON(1);
 323                 break;
 324         }
 325         return;
 326 }
 327
 328 /* Currently only support WOL through Magic packet. */
 329 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 330 {
 331         struct stmmac_priv *priv = netdev_priv(dev);
 332
 333         spin_lock_irq(&priv->lock);
 334         if (priv->wolenabled == PMT_SUPPORTED) {
 335                 wol->supported = WAKE_MAGIC;
 336                 wol->wolopts = priv->wolopts;
 337         }
 338         spin_unlock_irq(&priv->lock);
 339 }
 340
 341 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 342 {
 343         struct stmmac_priv *priv = netdev_priv(dev);
 344         u32 support = WAKE_MAGIC;
 345
 346         if (priv->wolenabled == PMT_NOT_SUPPORTED)
 347                 return -EINVAL;
 348
 349         if (wol->wolopts & ~support)
 350                 return -EINVAL;
 351
 352         if (wol->wolopts == 0)
 353                 device_set_wakeup_enable(priv->device, 0);
 354         else
 355                 device_set_wakeup_enable(priv->device, 1);
 356
 357         spin_lock_irq(&priv->lock);
 358         priv->wolopts = wol->wolopts;
 359         spin_unlock_irq(&priv->lock);
 360
 361         return 0;
 362 }
 363
 364 static struct ethtool_ops stmmac_ethtool_ops = {
 365         .begin = stmmac_check_if_running,
 366         .get_drvinfo = stmmac_ethtool_getdrvinfo,
 367         .get_settings = stmmac_ethtool_getsettings,
 368         .set_settings = stmmac_ethtool_setsettings,
 369         .get_msglevel = stmmac_ethtool_getmsglevel,
 370         .set_msglevel = stmmac_ethtool_setmsglevel,
 371         .get_regs = stmmac_ethtool_gregs,
 372         .get_regs_len = stmmac_ethtool_get_regs_len,
 373         .get_link = ethtool_op_get_link,
 374         .get_rx_csum = stmmac_ethtool_get_rx_csum,
 375         .get_tx_csum = ethtool_op_get_tx_csum,
 376         .set_tx_csum = stmmac_ethtool_set_tx_csum,
 377         .get_sg = ethtool_op_get_sg,
 378         .set_sg = ethtool_op_set_sg,
 379         .get_pauseparam = stmmac_get_pauseparam,
 380         .set_pauseparam = stmmac_set_pauseparam,
 381         .get_ethtool_stats = stmmac_get_ethtool_stats,
 382         .get_strings = stmmac_get_strings,
 383         .get_wol = stmmac_get_wol,
 384         .set_wol = stmmac_set_wol,
 385         .get_sset_count = stmmac_get_sset_count,
 386 #ifdef NETIF_F_TSO
 387         .get_tso = ethtool_op_get_tso,
 388         .set_tso = ethtool_op_set_tso,
 389 #endif
 390 };
 391
 392 void stmmac_set_ethtool_ops(struct net_device *netdev)
 393 {
 394         SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
 395 }