drivers/net/ethernet/stmicro/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(vlan_tag),
  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(sa_filter_fail),
  63         STMMAC_STAT(overflow_error),
  64         STMMAC_STAT(ipc_csum_error),
  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 /* HW MAC Management counters (if supported) */
  95 #define STMMAC_MMC_STAT(m)      \
  96         { #m, FIELD_SIZEOF(struct stmmac_counters, m),  \
  97         offsetof(struct stmmac_priv, mmc.m)}
  98
  99 static const struct stmmac_stats stmmac_mmc[] = {
 100         STMMAC_MMC_STAT(mmc_tx_octetcount_gb),
 101         STMMAC_MMC_STAT(mmc_tx_framecount_gb),
 102         STMMAC_MMC_STAT(mmc_tx_broadcastframe_g),
 103         STMMAC_MMC_STAT(mmc_tx_multicastframe_g),
 104         STMMAC_MMC_STAT(mmc_tx_64_octets_gb),
 105         STMMAC_MMC_STAT(mmc_tx_65_to_127_octets_gb),
 106         STMMAC_MMC_STAT(mmc_tx_128_to_255_octets_gb),
 107         STMMAC_MMC_STAT(mmc_tx_256_to_511_octets_gb),
 108         STMMAC_MMC_STAT(mmc_tx_512_to_1023_octets_gb),
 109         STMMAC_MMC_STAT(mmc_tx_1024_to_max_octets_gb),
 110         STMMAC_MMC_STAT(mmc_tx_unicast_gb),
 111         STMMAC_MMC_STAT(mmc_tx_multicast_gb),
 112         STMMAC_MMC_STAT(mmc_tx_broadcast_gb),
 113         STMMAC_MMC_STAT(mmc_tx_underflow_error),
 114         STMMAC_MMC_STAT(mmc_tx_singlecol_g),
 115         STMMAC_MMC_STAT(mmc_tx_multicol_g),
 116         STMMAC_MMC_STAT(mmc_tx_deferred),
 117         STMMAC_MMC_STAT(mmc_tx_latecol),
 118         STMMAC_MMC_STAT(mmc_tx_exesscol),
 119         STMMAC_MMC_STAT(mmc_tx_carrier_error),
 120         STMMAC_MMC_STAT(mmc_tx_octetcount_g),
 121         STMMAC_MMC_STAT(mmc_tx_framecount_g),
 122         STMMAC_MMC_STAT(mmc_tx_excessdef),
 123         STMMAC_MMC_STAT(mmc_tx_pause_frame),
 124         STMMAC_MMC_STAT(mmc_tx_vlan_frame_g),
 125         STMMAC_MMC_STAT(mmc_rx_framecount_gb),
 126         STMMAC_MMC_STAT(mmc_rx_octetcount_gb),
 127         STMMAC_MMC_STAT(mmc_rx_octetcount_g),
 128         STMMAC_MMC_STAT(mmc_rx_broadcastframe_g),
 129         STMMAC_MMC_STAT(mmc_rx_multicastframe_g),
 130         STMMAC_MMC_STAT(mmc_rx_crc_errror),
 131         STMMAC_MMC_STAT(mmc_rx_align_error),
 132         STMMAC_MMC_STAT(mmc_rx_run_error),
 133         STMMAC_MMC_STAT(mmc_rx_jabber_error),
 134         STMMAC_MMC_STAT(mmc_rx_undersize_g),
 135         STMMAC_MMC_STAT(mmc_rx_oversize_g),
 136         STMMAC_MMC_STAT(mmc_rx_64_octets_gb),
 137         STMMAC_MMC_STAT(mmc_rx_65_to_127_octets_gb),
 138         STMMAC_MMC_STAT(mmc_rx_128_to_255_octets_gb),
 139         STMMAC_MMC_STAT(mmc_rx_256_to_511_octets_gb),
 140         STMMAC_MMC_STAT(mmc_rx_512_to_1023_octets_gb),
 141         STMMAC_MMC_STAT(mmc_rx_1024_to_max_octets_gb),
 142         STMMAC_MMC_STAT(mmc_rx_unicast_g),
 143         STMMAC_MMC_STAT(mmc_rx_length_error),
 144         STMMAC_MMC_STAT(mmc_rx_autofrangetype),
 145         STMMAC_MMC_STAT(mmc_rx_pause_frames),
 146         STMMAC_MMC_STAT(mmc_rx_fifo_overflow),
 147         STMMAC_MMC_STAT(mmc_rx_vlan_frames_gb),
 148         STMMAC_MMC_STAT(mmc_rx_watchdog_error),
 149         STMMAC_MMC_STAT(mmc_rx_ipc_intr_mask),
 150         STMMAC_MMC_STAT(mmc_rx_ipc_intr),
 151         STMMAC_MMC_STAT(mmc_rx_ipv4_gd),
 152         STMMAC_MMC_STAT(mmc_rx_ipv4_hderr),
 153         STMMAC_MMC_STAT(mmc_rx_ipv4_nopay),
 154         STMMAC_MMC_STAT(mmc_rx_ipv4_frag),
 155         STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl),
 156         STMMAC_MMC_STAT(mmc_rx_ipv4_gd_octets),
 157         STMMAC_MMC_STAT(mmc_rx_ipv4_hderr_octets),
 158         STMMAC_MMC_STAT(mmc_rx_ipv4_nopay_octets),
 159         STMMAC_MMC_STAT(mmc_rx_ipv4_frag_octets),
 160         STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl_octets),
 161         STMMAC_MMC_STAT(mmc_rx_ipv6_gd_octets),
 162         STMMAC_MMC_STAT(mmc_rx_ipv6_hderr_octets),
 163         STMMAC_MMC_STAT(mmc_rx_ipv6_nopay_octets),
 164         STMMAC_MMC_STAT(mmc_rx_ipv6_gd),
 165         STMMAC_MMC_STAT(mmc_rx_ipv6_hderr),
 166         STMMAC_MMC_STAT(mmc_rx_ipv6_nopay),
 167         STMMAC_MMC_STAT(mmc_rx_udp_gd),
 168         STMMAC_MMC_STAT(mmc_rx_udp_err),
 169         STMMAC_MMC_STAT(mmc_rx_tcp_gd),
 170         STMMAC_MMC_STAT(mmc_rx_tcp_err),
 171         STMMAC_MMC_STAT(mmc_rx_icmp_gd),
 172         STMMAC_MMC_STAT(mmc_rx_icmp_err),
 173         STMMAC_MMC_STAT(mmc_rx_udp_gd_octets),
 174         STMMAC_MMC_STAT(mmc_rx_udp_err_octets),
 175         STMMAC_MMC_STAT(mmc_rx_tcp_gd_octets),
 176         STMMAC_MMC_STAT(mmc_rx_tcp_err_octets),
 177         STMMAC_MMC_STAT(mmc_rx_icmp_gd_octets),
 178         STMMAC_MMC_STAT(mmc_rx_icmp_err_octets),
 179 };
 180 #define STMMAC_MMC_STATS_LEN ARRAY_SIZE(stmmac_mmc)
 181
 182 static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
 183                                       struct ethtool_drvinfo *info)
 184 {
 185         struct stmmac_priv *priv = netdev_priv(dev);
 186
 187         if (priv->plat->has_gmac)
 188                 strcpy(info->driver, GMAC_ETHTOOL_NAME);
 189         else
 190                 strcpy(info->driver, MAC100_ETHTOOL_NAME);
 191
 192         strcpy(info->version, DRV_MODULE_VERSION);
 193         info->fw_version[0] = '\0';
 194 }
 195
 196 static int stmmac_ethtool_getsettings(struct net_device *dev,
 197                                       struct ethtool_cmd *cmd)
 198 {
 199         struct stmmac_priv *priv = netdev_priv(dev);
 200         struct phy_device *phy = priv->phydev;
 201         int rc;
 202         if (phy == NULL) {
 203                 pr_err("%s: %s: PHY is not registered\n",
 204                        __func__, dev->name);
 205                 return -ENODEV;
 206         }
 207         if (!netif_running(dev)) {
 208                 pr_err("%s: interface is disabled: we cannot track "
 209                 "link speed / duplex setting\n", dev->name);
 210                 return -EBUSY;
 211         }
 212         cmd->transceiver = XCVR_INTERNAL;
 213         spin_lock_irq(&priv->lock);
 214         rc = phy_ethtool_gset(phy, cmd);
 215         spin_unlock_irq(&priv->lock);
 216         return rc;
 217 }
 218
 219 static int stmmac_ethtool_setsettings(struct net_device *dev,
 220                                       struct ethtool_cmd *cmd)
 221 {
 222         struct stmmac_priv *priv = netdev_priv(dev);
 223         struct phy_device *phy = priv->phydev;
 224         int rc;
 225
 226         spin_lock(&priv->lock);
 227         rc = phy_ethtool_sset(phy, cmd);
 228         spin_unlock(&priv->lock);
 229
 230         return rc;
 231 }
 232
 233 static u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
 234 {
 235         struct stmmac_priv *priv = netdev_priv(dev);
 236         return priv->msg_enable;
 237 }
 238
 239 static void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
 240 {
 241         struct stmmac_priv *priv = netdev_priv(dev);
 242         priv->msg_enable = level;
 243
 244 }
 245
 246 static int stmmac_check_if_running(struct net_device *dev)
 247 {
 248         if (!netif_running(dev))
 249                 return -EBUSY;
 250         return 0;
 251 }
 252
 253 static int stmmac_ethtool_get_regs_len(struct net_device *dev)
 254 {
 255         return REG_SPACE_SIZE;
 256 }
 257
 258 static void stmmac_ethtool_gregs(struct net_device *dev,
 259                           struct ethtool_regs *regs, void *space)
 260 {
 261         int i;
 262         u32 *reg_space = (u32 *) space;
 263
 264         struct stmmac_priv *priv = netdev_priv(dev);
 265
 266         memset(reg_space, 0x0, REG_SPACE_SIZE);
 267
 268         if (!priv->plat->has_gmac) {
 269                 /* MAC registers */
 270                 for (i = 0; i < 12; i++)
 271                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 272                 /* DMA registers */
 273                 for (i = 0; i < 9; i++)
 274                         reg_space[i + 12] =
 275                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 276                 reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
 277                 reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
 278         } else {
 279                 /* MAC registers */
 280                 for (i = 0; i < 55; i++)
 281                         reg_space[i] = readl(priv->ioaddr + (i * 4));
 282                 /* DMA registers */
 283                 for (i = 0; i < 22; i++)
 284                         reg_space[i + 55] =
 285                             readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
 286         }
 287 }
 288
 289 static void
 290 stmmac_get_pauseparam(struct net_device *netdev,
 291                       struct ethtool_pauseparam *pause)
 292 {
 293         struct stmmac_priv *priv = netdev_priv(netdev);
 294
 295         spin_lock(&priv->lock);
 296
 297         pause->rx_pause = 0;
 298         pause->tx_pause = 0;
 299         pause->autoneg = priv->phydev->autoneg;
 300
 301         if (priv->flow_ctrl & FLOW_RX)
 302                 pause->rx_pause = 1;
 303         if (priv->flow_ctrl & FLOW_TX)
 304                 pause->tx_pause = 1;
 305
 306         spin_unlock(&priv->lock);
 307 }
 308
 309 static int
 310 stmmac_set_pauseparam(struct net_device *netdev,
 311                       struct ethtool_pauseparam *pause)
 312 {
 313         struct stmmac_priv *priv = netdev_priv(netdev);
 314         struct phy_device *phy = priv->phydev;
 315         int new_pause = FLOW_OFF;
 316         int ret = 0;
 317
 318         spin_lock(&priv->lock);
 319
 320         if (pause->rx_pause)
 321                 new_pause |= FLOW_RX;
 322         if (pause->tx_pause)
 323                 new_pause |= FLOW_TX;
 324
 325         priv->flow_ctrl = new_pause;
 326         phy->autoneg = pause->autoneg;
 327
 328         if (phy->autoneg) {
 329                 if (netif_running(netdev))
 330                         ret = phy_start_aneg(phy);
 331         } else
 332                 priv->hw->mac->flow_ctrl(priv->ioaddr, phy->duplex,
 333                                          priv->flow_ctrl, priv->pause);
 334         spin_unlock(&priv->lock);
 335         return ret;
 336 }
 337
 338 static void stmmac_get_ethtool_stats(struct net_device *dev,
 339                                  struct ethtool_stats *dummy, u64 *data)
 340 {
 341         struct stmmac_priv *priv = netdev_priv(dev);
 342         int i, j = 0;
 343
 344         /* Update the DMA HW counters for dwmac10/100 */
 345         if (!priv->plat->has_gmac)
 346                 priv->hw->dma->dma_diagnostic_fr(&dev->stats,
 347                                                  (void *) &priv->xstats,
 348                                                  priv->ioaddr);
 349         else {
 350                 /* If supported, for new GMAC chips expose the MMC counters */
 351                 if (priv->dma_cap.rmon) {
 352                         dwmac_mmc_read(priv->ioaddr, &priv->mmc);
 353
 354                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
 355                                 char *p;
 356                                 p = (char *)priv + stmmac_mmc[i].stat_offset;
 357
 358                                 data[j++] = (stmmac_mmc[i].sizeof_stat ==
 359                                              sizeof(u64)) ? (*(u64 *)p) :
 360                                              (*(u32 *)p);
 361                         }
 362                 }
 363         }
 364         for (i = 0; i < STMMAC_STATS_LEN; i++) {
 365                 char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
 366                 data[j++] = (stmmac_gstrings_stats[i].sizeof_stat ==
 367                              sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
 368         }
 369 }
 370
 371 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
 372 {
 373         struct stmmac_priv *priv = netdev_priv(netdev);
 374         int len;
 375
 376         switch (sset) {
 377         case ETH_SS_STATS:
 378                 len = STMMAC_STATS_LEN;
 379
 380                 if (priv->dma_cap.rmon)
 381                         len += STMMAC_MMC_STATS_LEN;
 382
 383                 return len;
 384         default:
 385                 return -EOPNOTSUPP;
 386         }
 387 }
 388
 389 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 390 {
 391         int i;
 392         u8 *p = data;
 393         struct stmmac_priv *priv = netdev_priv(dev);
 394
 395         switch (stringset) {
 396         case ETH_SS_STATS:
 397                 if (priv->dma_cap.rmon)
 398                         for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
 399                                 memcpy(p, stmmac_mmc[i].stat_string,
 400                                        ETH_GSTRING_LEN);
 401                                 p += ETH_GSTRING_LEN;
 402                         }
 403                 for (i = 0; i < STMMAC_STATS_LEN; i++) {
 404                         memcpy(p, stmmac_gstrings_stats[i].stat_string,
 405                                 ETH_GSTRING_LEN);
 406                         p += ETH_GSTRING_LEN;
 407                 }
 408                 break;
 409         default:
 410                 WARN_ON(1);
 411                 break;
 412         }
 413 }
 414
 415 /* Currently only support WOL through Magic packet. */
 416 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 417 {
 418         struct stmmac_priv *priv = netdev_priv(dev);
 419
 420         spin_lock_irq(&priv->lock);
 421         if (device_can_wakeup(priv->device)) {
 422                 wol->supported = WAKE_MAGIC | WAKE_UCAST;
 423                 wol->wolopts = priv->wolopts;
 424         }
 425         spin_unlock_irq(&priv->lock);
 426 }
 427
 428 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 429 {
 430         struct stmmac_priv *priv = netdev_priv(dev);
 431         u32 support = WAKE_MAGIC | WAKE_UCAST;
 432
 433         /* By default almost all GMAC devices support the WoL via
 434          * magic frame but we can disable it if the HW capability
 435          * register shows no support for pmt_magic_frame. */
 436         if ((priv->hw_cap_support) && (!priv->dma_cap.pmt_magic_frame))
 437                 wol->wolopts &= ~WAKE_MAGIC;
 438
 439         if (!device_can_wakeup(priv->device))
 440                 return -EINVAL;
 441
 442         if (wol->wolopts & ~support)
 443                 return -EINVAL;
 444
 445         if (wol->wolopts) {
 446                 pr_info("stmmac: wakeup enable\n");
 447                 device_set_wakeup_enable(priv->device, 1);
 448                 enable_irq_wake(priv->wol_irq);
 449         } else {
 450                 device_set_wakeup_enable(priv->device, 0);
 451                 disable_irq_wake(priv->wol_irq);
 452         }
 453
 454         spin_lock_irq(&priv->lock);
 455         priv->wolopts = wol->wolopts;
 456         spin_unlock_irq(&priv->lock);
 457
 458         return 0;
 459 }
 460
 461 static struct ethtool_ops stmmac_ethtool_ops = {
 462         .begin = stmmac_check_if_running,
 463         .get_drvinfo = stmmac_ethtool_getdrvinfo,
 464         .get_settings = stmmac_ethtool_getsettings,
 465         .set_settings = stmmac_ethtool_setsettings,
 466         .get_msglevel = stmmac_ethtool_getmsglevel,
 467         .set_msglevel = stmmac_ethtool_setmsglevel,
 468         .get_regs = stmmac_ethtool_gregs,
 469         .get_regs_len = stmmac_ethtool_get_regs_len,
 470         .get_link = ethtool_op_get_link,
 471         .get_pauseparam = stmmac_get_pauseparam,
 472         .set_pauseparam = stmmac_set_pauseparam,
 473         .get_ethtool_stats = stmmac_get_ethtool_stats,
 474         .get_strings = stmmac_get_strings,
 475         .get_wol = stmmac_get_wol,
 476         .set_wol = stmmac_set_wol,
 477         .get_sset_count = stmmac_get_sset_count,
 478 };
 479
 480 void stmmac_set_ethtool_ops(struct net_device *netdev)
 481 {
 482         SET_ETHTOOL_OPS(netdev, &stmmac_ethtool_ops);
 483 }