drivers/net/ethernet/freescale/gianfar_ethtool.c

   1 /*
   2  *  drivers/net/ethernet/freescale/gianfar_ethtool.c
   3  *
   4  *  Gianfar Ethernet Driver
   5  *  Ethtool support for Gianfar Enet
   6  *  Based on e1000 ethtool support
   7  *
   8  *  Author: Andy Fleming
   9  *  Maintainer: Kumar Gala
  10  *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
  11  *
  12  *  Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
  13  *
  14  *  This software may be used and distributed according to
  15  *  the terms of the GNU Public License, Version 2, incorporated herein
  16  *  by reference.
  17  */
  18
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/kernel.h>
  22 #include <linux/string.h>
  23 #include <linux/errno.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/init.h>
  26 #include <linux/delay.h>
  27 #include <linux/netdevice.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/net_tstamp.h>
  30 #include <linux/skbuff.h>
  31 #include <linux/spinlock.h>
  32 #include <linux/mm.h>
  33
  34 #include <asm/io.h>
  35 #include <asm/irq.h>
  36 #include <asm/uaccess.h>
  37 #include <linux/module.h>
  38 #include <linux/crc32.h>
  39 #include <asm/types.h>
  40 #include <linux/ethtool.h>
  41 #include <linux/mii.h>
  42 #include <linux/phy.h>
  43 #include <linux/sort.h>
  44 #include <linux/if_vlan.h>
  45
  46 #include "gianfar.h"
  47
  48 extern void gfar_start(struct net_device *dev);
  49 extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue,
  50                               int rx_work_limit);
  51
  52 #define GFAR_MAX_COAL_USECS 0xffff
  53 #define GFAR_MAX_COAL_FRAMES 0xff
  54 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  55                             u64 *buf);
  56 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
  57 static int gfar_gcoalesce(struct net_device *dev,
  58                           struct ethtool_coalesce *cvals);
  59 static int gfar_scoalesce(struct net_device *dev,
  60                           struct ethtool_coalesce *cvals);
  61 static void gfar_gringparam(struct net_device *dev,
  62                             struct ethtool_ringparam *rvals);
  63 static int gfar_sringparam(struct net_device *dev,
  64                            struct ethtool_ringparam *rvals);
  65 static void gfar_gdrvinfo(struct net_device *dev,
  66                           struct ethtool_drvinfo *drvinfo);
  67
  68 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  69         "rx-dropped-by-kernel",
  70         "rx-large-frame-errors",
  71         "rx-short-frame-errors",
  72         "rx-non-octet-errors",
  73         "rx-crc-errors",
  74         "rx-overrun-errors",
  75         "rx-busy-errors",
  76         "rx-babbling-errors",
  77         "rx-truncated-frames",
  78         "ethernet-bus-error",
  79         "tx-babbling-errors",
  80         "tx-underrun-errors",
  81         "rx-skb-missing-errors",
  82         "tx-timeout-errors",
  83         "tx-rx-64-frames",
  84         "tx-rx-65-127-frames",
  85         "tx-rx-128-255-frames",
  86         "tx-rx-256-511-frames",
  87         "tx-rx-512-1023-frames",
  88         "tx-rx-1024-1518-frames",
  89         "tx-rx-1519-1522-good-vlan",
  90         "rx-bytes",
  91         "rx-packets",
  92         "rx-fcs-errors",
  93         "receive-multicast-packet",
  94         "receive-broadcast-packet",
  95         "rx-control-frame-packets",
  96         "rx-pause-frame-packets",
  97         "rx-unknown-op-code",
  98         "rx-alignment-error",
  99         "rx-frame-length-error",
 100         "rx-code-error",
 101         "rx-carrier-sense-error",
 102         "rx-undersize-packets",
 103         "rx-oversize-packets",
 104         "rx-fragmented-frames",
 105         "rx-jabber-frames",
 106         "rx-dropped-frames",
 107         "tx-byte-counter",
 108         "tx-packets",
 109         "tx-multicast-packets",
 110         "tx-broadcast-packets",
 111         "tx-pause-control-frames",
 112         "tx-deferral-packets",
 113         "tx-excessive-deferral-packets",
 114         "tx-single-collision-packets",
 115         "tx-multiple-collision-packets",
 116         "tx-late-collision-packets",
 117         "tx-excessive-collision-packets",
 118         "tx-total-collision",
 119         "reserved",
 120         "tx-dropped-frames",
 121         "tx-jabber-frames",
 122         "tx-fcs-errors",
 123         "tx-control-frames",
 124         "tx-oversize-frames",
 125         "tx-undersize-frames",
 126         "tx-fragmented-frames",
 127 };
 128
 129 /* Fill in a buffer with the strings which correspond to the
 130  * stats */
 131 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
 132 {
 133         struct gfar_private *priv = netdev_priv(dev);
 134
 135         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 136                 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
 137         else
 138                 memcpy(buf, stat_gstrings,
 139                        GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
 140 }
 141
 142 /* Fill in an array of 64-bit statistics from various sources.
 143  * This array will be appended to the end of the ethtool_stats
 144  * structure, and returned to user space
 145  */
 146 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
 147                             u64 *buf)
 148 {
 149         int i;
 150         struct gfar_private *priv = netdev_priv(dev);
 151         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 152         u64 *extra = (u64 *) & priv->extra_stats;
 153
 154         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
 155                 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
 156                 struct gfar_stats *stats = (struct gfar_stats *) buf;
 157
 158                 for (i = 0; i < GFAR_RMON_LEN; i++)
 159                         stats->rmon[i] = (u64) gfar_read(&rmon[i]);
 160
 161                 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 162                         stats->extra[i] = extra[i];
 163         } else
 164                 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 165                         buf[i] = extra[i];
 166 }
 167
 168 static int gfar_sset_count(struct net_device *dev, int sset)
 169 {
 170         struct gfar_private *priv = netdev_priv(dev);
 171
 172         switch (sset) {
 173         case ETH_SS_STATS:
 174                 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 175                         return GFAR_STATS_LEN;
 176                 else
 177                         return GFAR_EXTRA_STATS_LEN;
 178         default:
 179                 return -EOPNOTSUPP;
 180         }
 181 }
 182
 183 /* Fills in the drvinfo structure with some basic info */
 184 static void gfar_gdrvinfo(struct net_device *dev,
 185                           struct ethtool_drvinfo *drvinfo)
 186 {
 187         strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN);
 188         strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN);
 189         strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN);
 190         strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN);
 191         drvinfo->regdump_len = 0;
 192         drvinfo->eedump_len = 0;
 193 }
 194
 195
 196 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
 197 {
 198         struct gfar_private *priv = netdev_priv(dev);
 199         struct phy_device *phydev = priv->phydev;
 200
 201         if (NULL == phydev)
 202                 return -ENODEV;
 203
 204         return phy_ethtool_sset(phydev, cmd);
 205 }
 206
 207
 208 /* Return the current settings in the ethtool_cmd structure */
 209 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 210 {
 211         struct gfar_private *priv = netdev_priv(dev);
 212         struct phy_device *phydev = priv->phydev;
 213         struct gfar_priv_rx_q *rx_queue = NULL;
 214         struct gfar_priv_tx_q *tx_queue = NULL;
 215
 216         if (NULL == phydev)
 217                 return -ENODEV;
 218         tx_queue = priv->tx_queue[0];
 219         rx_queue = priv->rx_queue[0];
 220
 221         /* etsec-1.7 and older versions have only one txic
 222          * and rxic regs although they support multiple queues */
 223         cmd->maxtxpkt = get_icft_value(tx_queue->txic);
 224         cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
 225
 226         return phy_ethtool_gset(phydev, cmd);
 227 }
 228
 229 /* Return the length of the register structure */
 230 static int gfar_reglen(struct net_device *dev)
 231 {
 232         return sizeof (struct gfar);
 233 }
 234
 235 /* Return a dump of the GFAR register space */
 236 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 237                           void *regbuf)
 238 {
 239         int i;
 240         struct gfar_private *priv = netdev_priv(dev);
 241         u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 242         u32 *buf = (u32 *) regbuf;
 243
 244         for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 245                 buf[i] = gfar_read(&theregs[i]);
 246 }
 247
 248 /* Convert microseconds to ethernet clock ticks, which changes
 249  * depending on what speed the controller is running at */
 250 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 251                                      unsigned int usecs)
 252 {
 253         unsigned int count;
 254
 255         /* The timer is different, depending on the interface speed */
 256         switch (priv->phydev->speed) {
 257         case SPEED_1000:
 258                 count = GFAR_GBIT_TIME;
 259                 break;
 260         case SPEED_100:
 261                 count = GFAR_100_TIME;
 262                 break;
 263         case SPEED_10:
 264         default:
 265                 count = GFAR_10_TIME;
 266                 break;
 267         }
 268
 269         /* Make sure we return a number greater than 0
 270          * if usecs > 0 */
 271         return (usecs * 1000 + count - 1) / count;
 272 }
 273
 274 /* Convert ethernet clock ticks to microseconds */
 275 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 276                                      unsigned int ticks)
 277 {
 278         unsigned int count;
 279
 280         /* The timer is different, depending on the interface speed */
 281         switch (priv->phydev->speed) {
 282         case SPEED_1000:
 283                 count = GFAR_GBIT_TIME;
 284                 break;
 285         case SPEED_100:
 286                 count = GFAR_100_TIME;
 287                 break;
 288         case SPEED_10:
 289         default:
 290                 count = GFAR_10_TIME;
 291                 break;
 292         }
 293
 294         /* Make sure we return a number greater than 0 */
 295         /* if ticks is > 0 */
 296         return (ticks * count) / 1000;
 297 }
 298
 299 /* Get the coalescing parameters, and put them in the cvals
 300  * structure.  */
 301 static int gfar_gcoalesce(struct net_device *dev,
 302                           struct ethtool_coalesce *cvals)
 303 {
 304         struct gfar_private *priv = netdev_priv(dev);
 305         struct gfar_priv_rx_q *rx_queue = NULL;
 306         struct gfar_priv_tx_q *tx_queue = NULL;
 307         unsigned long rxtime;
 308         unsigned long rxcount;
 309         unsigned long txtime;
 310         unsigned long txcount;
 311
 312         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 313                 return -EOPNOTSUPP;
 314
 315         if (NULL == priv->phydev)
 316                 return -ENODEV;
 317
 318         rx_queue = priv->rx_queue[0];
 319         tx_queue = priv->tx_queue[0];
 320
 321         rxtime  = get_ictt_value(rx_queue->rxic);
 322         rxcount = get_icft_value(rx_queue->rxic);
 323         txtime  = get_ictt_value(tx_queue->txic);
 324         txcount = get_icft_value(tx_queue->txic);
 325         cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 326         cvals->rx_max_coalesced_frames = rxcount;
 327
 328         cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 329         cvals->tx_max_coalesced_frames = txcount;
 330
 331         cvals->use_adaptive_rx_coalesce = 0;
 332         cvals->use_adaptive_tx_coalesce = 0;
 333
 334         cvals->pkt_rate_low = 0;
 335         cvals->rx_coalesce_usecs_low = 0;
 336         cvals->rx_max_coalesced_frames_low = 0;
 337         cvals->tx_coalesce_usecs_low = 0;
 338         cvals->tx_max_coalesced_frames_low = 0;
 339
 340         /* When the packet rate is below pkt_rate_high but above
 341          * pkt_rate_low (both measured in packets per second) the
 342          * normal {rx,tx}_* coalescing parameters are used.
 343          */
 344
 345         /* When the packet rate is (measured in packets per second)
 346          * is above pkt_rate_high, the {rx,tx}_*_high parameters are
 347          * used.
 348          */
 349         cvals->pkt_rate_high = 0;
 350         cvals->rx_coalesce_usecs_high = 0;
 351         cvals->rx_max_coalesced_frames_high = 0;
 352         cvals->tx_coalesce_usecs_high = 0;
 353         cvals->tx_max_coalesced_frames_high = 0;
 354
 355         /* How often to do adaptive coalescing packet rate sampling,
 356          * measured in seconds.  Must not be zero.
 357          */
 358         cvals->rate_sample_interval = 0;
 359
 360         return 0;
 361 }
 362
 363 /* Change the coalescing values.
 364  * Both cvals->*_usecs and cvals->*_frames have to be > 0
 365  * in order for coalescing to be active
 366  */
 367 static int gfar_scoalesce(struct net_device *dev,
 368                           struct ethtool_coalesce *cvals)
 369 {
 370         struct gfar_private *priv = netdev_priv(dev);
 371         int i = 0;
 372
 373         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 374                 return -EOPNOTSUPP;
 375
 376         /* Set up rx coalescing */
 377         /* As of now, we will enable/disable coalescing for all
 378          * queues together in case of eTSEC2, this will be modified
 379          * along with the ethtool interface
 380          */
 381         if ((cvals->rx_coalesce_usecs == 0) ||
 382             (cvals->rx_max_coalesced_frames == 0)) {
 383                 for (i = 0; i < priv->num_rx_queues; i++)
 384                         priv->rx_queue[i]->rxcoalescing = 0;
 385         } else {
 386                 for (i = 0; i < priv->num_rx_queues; i++)
 387                         priv->rx_queue[i]->rxcoalescing = 1;
 388         }
 389
 390         if (NULL == priv->phydev)
 391                 return -ENODEV;
 392
 393         /* Check the bounds of the values */
 394         if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 395                 pr_info("Coalescing is limited to %d microseconds\n",
 396                         GFAR_MAX_COAL_USECS);
 397                 return -EINVAL;
 398         }
 399
 400         if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 401                 pr_info("Coalescing is limited to %d frames\n",
 402                         GFAR_MAX_COAL_FRAMES);
 403                 return -EINVAL;
 404         }
 405
 406         for (i = 0; i < priv->num_rx_queues; i++) {
 407                 priv->rx_queue[i]->rxic = mk_ic_value(
 408                         cvals->rx_max_coalesced_frames,
 409                         gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 410         }
 411
 412         /* Set up tx coalescing */
 413         if ((cvals->tx_coalesce_usecs == 0) ||
 414             (cvals->tx_max_coalesced_frames == 0)) {
 415                 for (i = 0; i < priv->num_tx_queues; i++)
 416                         priv->tx_queue[i]->txcoalescing = 0;
 417         } else {
 418                 for (i = 0; i < priv->num_tx_queues; i++)
 419                         priv->tx_queue[i]->txcoalescing = 1;
 420         }
 421
 422         /* Check the bounds of the values */
 423         if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 424                 pr_info("Coalescing is limited to %d microseconds\n",
 425                         GFAR_MAX_COAL_USECS);
 426                 return -EINVAL;
 427         }
 428
 429         if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 430                 pr_info("Coalescing is limited to %d frames\n",
 431                         GFAR_MAX_COAL_FRAMES);
 432                 return -EINVAL;
 433         }
 434
 435         for (i = 0; i < priv->num_tx_queues; i++) {
 436                 priv->tx_queue[i]->txic = mk_ic_value(
 437                         cvals->tx_max_coalesced_frames,
 438                         gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 439         }
 440
 441         gfar_configure_coalescing(priv, 0xFF, 0xFF);
 442
 443         return 0;
 444 }
 445
 446 /* Fills in rvals with the current ring parameters.  Currently,
 447  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 448  * jumbo are ignored by the driver */
 449 static void gfar_gringparam(struct net_device *dev,
 450                             struct ethtool_ringparam *rvals)
 451 {
 452         struct gfar_private *priv = netdev_priv(dev);
 453         struct gfar_priv_tx_q *tx_queue = NULL;
 454         struct gfar_priv_rx_q *rx_queue = NULL;
 455
 456         tx_queue = priv->tx_queue[0];
 457         rx_queue = priv->rx_queue[0];
 458
 459         rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 460         rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 461         rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 462         rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 463
 464         /* Values changeable by the user.  The valid values are
 465          * in the range 1 to the "*_max_pending" counterpart above.
 466          */
 467         rvals->rx_pending = rx_queue->rx_ring_size;
 468         rvals->rx_mini_pending = rx_queue->rx_ring_size;
 469         rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 470         rvals->tx_pending = tx_queue->tx_ring_size;
 471 }
 472
 473 /* Change the current ring parameters, stopping the controller if
 474  * necessary so that we don't mess things up while we're in
 475  * motion.  We wait for the ring to be clean before reallocating
 476  * the rings.
 477  */
 478 static int gfar_sringparam(struct net_device *dev,
 479                            struct ethtool_ringparam *rvals)
 480 {
 481         struct gfar_private *priv = netdev_priv(dev);
 482         int err = 0, i = 0;
 483
 484         if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 485                 return -EINVAL;
 486
 487         if (!is_power_of_2(rvals->rx_pending)) {
 488                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 489                 return -EINVAL;
 490         }
 491
 492         if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 493                 return -EINVAL;
 494
 495         if (!is_power_of_2(rvals->tx_pending)) {
 496                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 497                 return -EINVAL;
 498         }
 499
 500
 501         if (dev->flags & IFF_UP) {
 502                 unsigned long flags;
 503
 504                 /* Halt TX and RX, and process the frames which
 505                  * have already been received
 506                  */
 507                 local_irq_save(flags);
 508                 lock_tx_qs(priv);
 509                 lock_rx_qs(priv);
 510
 511                 gfar_halt(dev);
 512
 513                 unlock_rx_qs(priv);
 514                 unlock_tx_qs(priv);
 515                 local_irq_restore(flags);
 516
 517                 for (i = 0; i < priv->num_rx_queues; i++)
 518                         gfar_clean_rx_ring(priv->rx_queue[i],
 519                                            priv->rx_queue[i]->rx_ring_size);
 520
 521                 /* Now we take down the rings to rebuild them */
 522                 stop_gfar(dev);
 523         }
 524
 525         /* Change the size */
 526         for (i = 0; i < priv->num_rx_queues; i++) {
 527                 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 528                 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 529                 priv->tx_queue[i]->num_txbdfree =
 530                         priv->tx_queue[i]->tx_ring_size;
 531         }
 532
 533         /* Rebuild the rings with the new size */
 534         if (dev->flags & IFF_UP) {
 535                 err = startup_gfar(dev);
 536                 netif_tx_wake_all_queues(dev);
 537         }
 538         return err;
 539 }
 540
 541 int gfar_set_features(struct net_device *dev, netdev_features_t features)
 542 {
 543         struct gfar_private *priv = netdev_priv(dev);
 544         unsigned long flags;
 545         int err = 0, i = 0;
 546         netdev_features_t changed = dev->features ^ features;
 547
 548         if (changed & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
 549                 gfar_vlan_mode(dev, features);
 550
 551         if (!(changed & NETIF_F_RXCSUM))
 552                 return 0;
 553
 554         if (dev->flags & IFF_UP) {
 555                 /* Halt TX and RX, and process the frames which
 556                  * have already been received
 557                  */
 558                 local_irq_save(flags);
 559                 lock_tx_qs(priv);
 560                 lock_rx_qs(priv);
 561
 562                 gfar_halt(dev);
 563
 564                 unlock_tx_qs(priv);
 565                 unlock_rx_qs(priv);
 566                 local_irq_restore(flags);
 567
 568                 for (i = 0; i < priv->num_rx_queues; i++)
 569                         gfar_clean_rx_ring(priv->rx_queue[i],
 570                                            priv->rx_queue[i]->rx_ring_size);
 571
 572                 /* Now we take down the rings to rebuild them */
 573                 stop_gfar(dev);
 574
 575                 dev->features = features;
 576
 577                 err = startup_gfar(dev);
 578                 netif_tx_wake_all_queues(dev);
 579         }
 580         return err;
 581 }
 582
 583 static uint32_t gfar_get_msglevel(struct net_device *dev)
 584 {
 585         struct gfar_private *priv = netdev_priv(dev);
 586
 587         return priv->msg_enable;
 588 }
 589
 590 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 591 {
 592         struct gfar_private *priv = netdev_priv(dev);
 593
 594         priv->msg_enable = data;
 595 }
 596
 597 #ifdef CONFIG_PM
 598 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 599 {
 600         struct gfar_private *priv = netdev_priv(dev);
 601
 602         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
 603                 wol->supported = WAKE_MAGIC;
 604                 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
 605         } else {
 606                 wol->supported = wol->wolopts = 0;
 607         }
 608 }
 609
 610 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 611 {
 612         struct gfar_private *priv = netdev_priv(dev);
 613         unsigned long flags;
 614
 615         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
 616             wol->wolopts != 0)
 617                 return -EINVAL;
 618
 619         if (wol->wolopts & ~WAKE_MAGIC)
 620                 return -EINVAL;
 621
 622         device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
 623
 624         spin_lock_irqsave(&priv->bflock, flags);
 625         priv->wol_en =  !!device_may_wakeup(&dev->dev);
 626         spin_unlock_irqrestore(&priv->bflock, flags);
 627
 628         return 0;
 629 }
 630 #endif
 631
 632 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 633 {
 634         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 635
 636         if (ethflow & RXH_L2DA) {
 637                 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
 638                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 639                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 640                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 641                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 642                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 643
 644                 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
 645                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 646                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 647                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 648                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 649                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 650         }
 651
 652         if (ethflow & RXH_VLAN) {
 653                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 654                       RQFCR_AND | RQFCR_HASHTBL_0;
 655                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 656                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 657                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 658                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 659         }
 660
 661         if (ethflow & RXH_IP_SRC) {
 662                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 663                       RQFCR_AND | RQFCR_HASHTBL_0;
 664                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 665                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 666                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 667                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 668         }
 669
 670         if (ethflow & (RXH_IP_DST)) {
 671                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 672                       RQFCR_AND | RQFCR_HASHTBL_0;
 673                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 674                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 675                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 676                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 677         }
 678
 679         if (ethflow & RXH_L3_PROTO) {
 680                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 681                       RQFCR_AND | RQFCR_HASHTBL_0;
 682                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 683                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 684                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 685                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 686         }
 687
 688         if (ethflow & RXH_L4_B_0_1) {
 689                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 690                       RQFCR_AND | RQFCR_HASHTBL_0;
 691                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 692                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 693                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 694                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 695         }
 696
 697         if (ethflow & RXH_L4_B_2_3) {
 698                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 699                       RQFCR_AND | RQFCR_HASHTBL_0;
 700                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 701                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 702                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 703                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 704         }
 705 }
 706
 707 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 708                                        u64 class)
 709 {
 710         unsigned int last_rule_idx = priv->cur_filer_idx;
 711         unsigned int cmp_rqfpr;
 712         unsigned int *local_rqfpr;
 713         unsigned int *local_rqfcr;
 714         int i = 0x0, k = 0x0;
 715         int j = MAX_FILER_IDX, l = 0x0;
 716         int ret = 1;
 717
 718         local_rqfpr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1),
 719                               GFP_KERNEL);
 720         local_rqfcr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1),
 721                               GFP_KERNEL);
 722         if (!local_rqfpr || !local_rqfcr) {
 723                 pr_err("Out of memory\n");
 724                 ret = 0;
 725                 goto err;
 726         }
 727
 728         switch (class) {
 729         case TCP_V4_FLOW:
 730                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 731                 break;
 732         case UDP_V4_FLOW:
 733                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 734                 break;
 735         case TCP_V6_FLOW:
 736                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 737                 break;
 738         case UDP_V6_FLOW:
 739                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 740                 break;
 741         default:
 742                 pr_err("Right now this class is not supported\n");
 743                 ret = 0;
 744                 goto err;
 745         }
 746
 747         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 748                 local_rqfpr[j] = priv->ftp_rqfpr[i];
 749                 local_rqfcr[j] = priv->ftp_rqfcr[i];
 750                 j--;
 751                 if ((priv->ftp_rqfcr[i] ==
 752                      (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 753                     (priv->ftp_rqfpr[i] == cmp_rqfpr))
 754                         break;
 755         }
 756
 757         if (i == MAX_FILER_IDX + 1) {
 758                 pr_err("No parse rule found, can't create hash rules\n");
 759                 ret = 0;
 760                 goto err;
 761         }
 762
 763         /* If a match was found, then it begins the starting of a cluster rule
 764          * if it was already programmed, we need to overwrite these rules
 765          */
 766         for (l = i+1; l < MAX_FILER_IDX; l++) {
 767                 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 768                     !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 769                         priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 770                                              RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 771                         priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 772                         gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 773                                          priv->ftp_rqfpr[l]);
 774                         break;
 775                 }
 776
 777                 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 778                         (priv->ftp_rqfcr[l] & RQFCR_AND))
 779                         continue;
 780                 else {
 781                         local_rqfpr[j] = priv->ftp_rqfpr[l];
 782                         local_rqfcr[j] = priv->ftp_rqfcr[l];
 783                         j--;
 784                 }
 785         }
 786
 787         priv->cur_filer_idx = l - 1;
 788         last_rule_idx = l;
 789
 790         /* hash rules */
 791         ethflow_to_filer_rules(priv, ethflow);
 792
 793         /* Write back the popped out rules again */
 794         for (k = j+1; k < MAX_FILER_IDX; k++) {
 795                 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 796                 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 797                 gfar_write_filer(priv, priv->cur_filer_idx,
 798                                  local_rqfcr[k], local_rqfpr[k]);
 799                 if (!priv->cur_filer_idx)
 800                         break;
 801                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 802         }
 803
 804 err:
 805         kfree(local_rqfcr);
 806         kfree(local_rqfpr);
 807         return ret;
 808 }
 809
 810 static int gfar_set_hash_opts(struct gfar_private *priv,
 811                               struct ethtool_rxnfc *cmd)
 812 {
 813         /* write the filer rules here */
 814         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 815                 return -EINVAL;
 816
 817         return 0;
 818 }
 819
 820 static int gfar_check_filer_hardware(struct gfar_private *priv)
 821 {
 822         struct gfar __iomem *regs = NULL;
 823         u32 i;
 824
 825         regs = priv->gfargrp[0].regs;
 826
 827         /* Check if we are in FIFO mode */
 828         i = gfar_read(&regs->ecntrl);
 829         i &= ECNTRL_FIFM;
 830         if (i == ECNTRL_FIFM) {
 831                 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 832                 i = gfar_read(&regs->rctrl);
 833                 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 834                 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 835                         netdev_info(priv->ndev,
 836                                     "Receive Queue Filtering enabled\n");
 837                 } else {
 838                         netdev_warn(priv->ndev,
 839                                     "Receive Queue Filtering disabled\n");
 840                         return -EOPNOTSUPP;
 841                 }
 842         }
 843         /* Or in standard mode */
 844         else {
 845                 i = gfar_read(&regs->rctrl);
 846                 i &= RCTRL_PRSDEP_MASK;
 847                 if (i == RCTRL_PRSDEP_MASK) {
 848                         netdev_info(priv->ndev,
 849                                     "Receive Queue Filtering enabled\n");
 850                 } else {
 851                         netdev_warn(priv->ndev,
 852                                     "Receive Queue Filtering disabled\n");
 853                         return -EOPNOTSUPP;
 854                 }
 855         }
 856
 857         /* Sets the properties for arbitrary filer rule
 858          * to the first 4 Layer 4 Bytes
 859          */
 860         regs->rbifx = 0xC0C1C2C3;
 861         return 0;
 862 }
 863
 864 static int gfar_comp_asc(const void *a, const void *b)
 865 {
 866         return memcmp(a, b, 4);
 867 }
 868
 869 static int gfar_comp_desc(const void *a, const void *b)
 870 {
 871         return -memcmp(a, b, 4);
 872 }
 873
 874 static void gfar_swap(void *a, void *b, int size)
 875 {
 876         u32 *_a = a;
 877         u32 *_b = b;
 878
 879         swap(_a[0], _b[0]);
 880         swap(_a[1], _b[1]);
 881         swap(_a[2], _b[2]);
 882         swap(_a[3], _b[3]);
 883 }
 884
 885 /* Write a mask to filer cache */
 886 static void gfar_set_mask(u32 mask, struct filer_table *tab)
 887 {
 888         tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 889         tab->fe[tab->index].prop = mask;
 890         tab->index++;
 891 }
 892
 893 /* Sets parse bits (e.g. IP or TCP) */
 894 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 895 {
 896         gfar_set_mask(mask, tab);
 897         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 898                                    RQFCR_AND;
 899         tab->fe[tab->index].prop = value;
 900         tab->index++;
 901 }
 902
 903 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 904                                        struct filer_table *tab)
 905 {
 906         gfar_set_mask(mask, tab);
 907         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 908         tab->fe[tab->index].prop = value;
 909         tab->index++;
 910 }
 911
 912 /* For setting a tuple of value and mask of type flag
 913  * Example:
 914  * IP-Src = 10.0.0.0/255.0.0.0
 915  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 916  *
 917  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 918  * For a don't care mask it gives us a 0
 919  *
 920  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 921  * and MAC stuff on an upper level (due to missing information on this level).
 922  * For these guys we can discard them if they are value=0 and mask=0.
 923  *
 924  * Further the all masks are one-padded for better hardware efficiency.
 925  */
 926 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 927                                struct filer_table *tab)
 928 {
 929         switch (flag) {
 930                 /* 3bit */
 931         case RQFCR_PID_PRI:
 932                 if (!(value | mask))
 933                         return;
 934                 mask |= RQFCR_PID_PRI_MASK;
 935                 break;
 936                 /* 8bit */
 937         case RQFCR_PID_L4P:
 938         case RQFCR_PID_TOS:
 939                 if (!~(mask | RQFCR_PID_L4P_MASK))
 940                         return;
 941                 if (!mask)
 942                         mask = ~0;
 943                 else
 944                         mask |= RQFCR_PID_L4P_MASK;
 945                 break;
 946                 /* 12bit */
 947         case RQFCR_PID_VID:
 948                 if (!(value | mask))
 949                         return;
 950                 mask |= RQFCR_PID_VID_MASK;
 951                 break;
 952                 /* 16bit */
 953         case RQFCR_PID_DPT:
 954         case RQFCR_PID_SPT:
 955         case RQFCR_PID_ETY:
 956                 if (!~(mask | RQFCR_PID_PORT_MASK))
 957                         return;
 958                 if (!mask)
 959                         mask = ~0;
 960                 else
 961                         mask |= RQFCR_PID_PORT_MASK;
 962                 break;
 963                 /* 24bit */
 964         case RQFCR_PID_DAH:
 965         case RQFCR_PID_DAL:
 966         case RQFCR_PID_SAH:
 967         case RQFCR_PID_SAL:
 968                 if (!(value | mask))
 969                         return;
 970                 mask |= RQFCR_PID_MAC_MASK;
 971                 break;
 972                 /* for all real 32bit masks */
 973         default:
 974                 if (!~mask)
 975                         return;
 976                 if (!mask)
 977                         mask = ~0;
 978                 break;
 979         }
 980         gfar_set_general_attribute(value, mask, flag, tab);
 981 }
 982
 983 /* Translates value and mask for UDP, TCP or SCTP */
 984 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
 985                               struct ethtool_tcpip4_spec *mask,
 986                               struct filer_table *tab)
 987 {
 988         gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab);
 989         gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab);
 990         gfar_set_attribute(value->pdst, mask->pdst, RQFCR_PID_DPT, tab);
 991         gfar_set_attribute(value->psrc, mask->psrc, RQFCR_PID_SPT, tab);
 992         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
 993 }
 994
 995 /* Translates value and mask for RAW-IP4 */
 996 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
 997                              struct ethtool_usrip4_spec *mask,
 998                              struct filer_table *tab)
 999 {
1000         gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab);
1001         gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab);
1002         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1003         gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1004         gfar_set_attribute(value->l4_4_bytes, mask->l4_4_bytes, RQFCR_PID_ARB,
1005                            tab);
1006
1007 }
1008
1009 /* Translates value and mask for ETHER spec */
1010 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1011                            struct filer_table *tab)
1012 {
1013         u32 upper_temp_mask = 0;
1014         u32 lower_temp_mask = 0;
1015
1016         /* Source address */
1017         if (!is_broadcast_ether_addr(mask->h_source)) {
1018                 if (is_zero_ether_addr(mask->h_source)) {
1019                         upper_temp_mask = 0xFFFFFFFF;
1020                         lower_temp_mask = 0xFFFFFFFF;
1021                 } else {
1022                         upper_temp_mask = mask->h_source[0] << 16 |
1023                                           mask->h_source[1] << 8  |
1024                                           mask->h_source[2];
1025                         lower_temp_mask = mask->h_source[3] << 16 |
1026                                           mask->h_source[4] << 8  |
1027                                           mask->h_source[5];
1028                 }
1029                 /* Upper 24bit */
1030                 gfar_set_attribute(value->h_source[0] << 16 |
1031                                    value->h_source[1] << 8  |
1032                                    value->h_source[2],
1033                                    upper_temp_mask, RQFCR_PID_SAH, tab);
1034                 /* And the same for the lower part */
1035                 gfar_set_attribute(value->h_source[3] << 16 |
1036                                    value->h_source[4] << 8  |
1037                                    value->h_source[5],
1038                                    lower_temp_mask, RQFCR_PID_SAL, tab);
1039         }
1040         /* Destination address */
1041         if (!is_broadcast_ether_addr(mask->h_dest)) {
1042                 /* Special for destination is limited broadcast */
1043                 if ((is_broadcast_ether_addr(value->h_dest) &&
1044                     is_zero_ether_addr(mask->h_dest))) {
1045                         gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1046                 } else {
1047                         if (is_zero_ether_addr(mask->h_dest)) {
1048                                 upper_temp_mask = 0xFFFFFFFF;
1049                                 lower_temp_mask = 0xFFFFFFFF;
1050                         } else {
1051                                 upper_temp_mask = mask->h_dest[0] << 16 |
1052                                                   mask->h_dest[1] << 8  |
1053                                                   mask->h_dest[2];
1054                                 lower_temp_mask = mask->h_dest[3] << 16 |
1055                                                   mask->h_dest[4] << 8  |
1056                                                   mask->h_dest[5];
1057                         }
1058
1059                         /* Upper 24bit */
1060                         gfar_set_attribute(value->h_dest[0] << 16 |
1061                                            value->h_dest[1] << 8  |
1062                                            value->h_dest[2],
1063                                            upper_temp_mask, RQFCR_PID_DAH, tab);
1064                         /* And the same for the lower part */
1065                         gfar_set_attribute(value->h_dest[3] << 16 |
1066                                            value->h_dest[4] << 8  |
1067                                            value->h_dest[5],
1068                                            lower_temp_mask, RQFCR_PID_DAL, tab);
1069                 }
1070         }
1071
1072         gfar_set_attribute(value->h_proto, mask->h_proto, RQFCR_PID_ETY, tab);
1073 }
1074
1075 /* Convert a rule to binary filter format of gianfar */
1076 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1077                                  struct filer_table *tab)
1078 {
1079         u32 vlan = 0, vlan_mask = 0;
1080         u32 id = 0, id_mask = 0;
1081         u32 cfi = 0, cfi_mask = 0;
1082         u32 prio = 0, prio_mask = 0;
1083         u32 old_index = tab->index;
1084
1085         /* Check if vlan is wanted */
1086         if ((rule->flow_type & FLOW_EXT) && (rule->m_ext.vlan_tci != 0xFFFF)) {
1087                 if (!rule->m_ext.vlan_tci)
1088                         rule->m_ext.vlan_tci = 0xFFFF;
1089
1090                 vlan = RQFPR_VLN;
1091                 vlan_mask = RQFPR_VLN;
1092
1093                 /* Separate the fields */
1094                 id = rule->h_ext.vlan_tci & VLAN_VID_MASK;
1095                 id_mask = rule->m_ext.vlan_tci & VLAN_VID_MASK;
1096                 cfi = rule->h_ext.vlan_tci & VLAN_CFI_MASK;
1097                 cfi_mask = rule->m_ext.vlan_tci & VLAN_CFI_MASK;
1098                 prio = (rule->h_ext.vlan_tci & VLAN_PRIO_MASK) >>
1099                        VLAN_PRIO_SHIFT;
1100                 prio_mask = (rule->m_ext.vlan_tci & VLAN_PRIO_MASK) >>
1101                             VLAN_PRIO_SHIFT;
1102
1103                 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1104                         vlan |= RQFPR_CFI;
1105                         vlan_mask |= RQFPR_CFI;
1106                 } else if (cfi != VLAN_TAG_PRESENT &&
1107                            cfi_mask == VLAN_TAG_PRESENT) {
1108                         vlan_mask |= RQFPR_CFI;
1109                 }
1110         }
1111
1112         switch (rule->flow_type & ~FLOW_EXT) {
1113         case TCP_V4_FLOW:
1114                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1115                                     RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1116                 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1117                                   &rule->m_u.tcp_ip4_spec, tab);
1118                 break;
1119         case UDP_V4_FLOW:
1120                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1121                                     RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1122                 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1123                                   &rule->m_u.udp_ip4_spec, tab);
1124                 break;
1125         case SCTP_V4_FLOW:
1126                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1127                                     tab);
1128                 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1129                 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1130                                   (struct ethtool_tcpip4_spec *)&rule->m_u,
1131                                   tab);
1132                 break;
1133         case IP_USER_FLOW:
1134                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1135                                     tab);
1136                 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1137                                  (struct ethtool_usrip4_spec *) &rule->m_u,
1138                                  tab);
1139                 break;
1140         case ETHER_FLOW:
1141                 if (vlan)
1142                         gfar_set_parse_bits(vlan, vlan_mask, tab);
1143                 gfar_set_ether((struct ethhdr *) &rule->h_u,
1144                                (struct ethhdr *) &rule->m_u, tab);
1145                 break;
1146         default:
1147                 return -1;
1148         }
1149
1150         /* Set the vlan attributes in the end */
1151         if (vlan) {
1152                 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1153                 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1154         }
1155
1156         /* If there has been nothing written till now, it must be a default */
1157         if (tab->index == old_index) {
1158                 gfar_set_mask(0xFFFFFFFF, tab);
1159                 tab->fe[tab->index].ctrl = 0x20;
1160                 tab->fe[tab->index].prop = 0x0;
1161                 tab->index++;
1162         }
1163
1164         /* Remove last AND */
1165         tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1166
1167         /* Specify which queue to use or to drop */
1168         if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1169                 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1170         else
1171                 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1172
1173         /* Only big enough entries can be clustered */
1174         if (tab->index > (old_index + 2)) {
1175                 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1176                 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1177         }
1178
1179         /* In rare cases the cache can be full while there is
1180          * free space in hw
1181          */
1182         if (tab->index > MAX_FILER_CACHE_IDX - 1)
1183                 return -EBUSY;
1184
1185         return 0;
1186 }
1187
1188 /* Copy size filer entries */
1189 static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1190                                     struct gfar_filer_entry src[0], s32 size)
1191 {
1192         while (size > 0) {
1193                 size--;
1194                 dst[size].ctrl = src[size].ctrl;
1195                 dst[size].prop = src[size].prop;
1196         }
1197 }
1198
1199 /* Delete the contents of the filer-table between start and end
1200  * and collapse them
1201  */
1202 static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1203 {
1204         int length;
1205
1206         if (end > MAX_FILER_CACHE_IDX || end < begin)
1207                 return -EINVAL;
1208
1209         end++;
1210         length = end - begin;
1211
1212         /* Copy */
1213         while (end < tab->index) {
1214                 tab->fe[begin].ctrl = tab->fe[end].ctrl;
1215                 tab->fe[begin++].prop = tab->fe[end++].prop;
1216
1217         }
1218         /* Fill up with don't cares */
1219         while (begin < tab->index) {
1220                 tab->fe[begin].ctrl = 0x60;
1221                 tab->fe[begin].prop = 0xFFFFFFFF;
1222                 begin++;
1223         }
1224
1225         tab->index -= length;
1226         return 0;
1227 }
1228
1229 /* Make space on the wanted location */
1230 static int gfar_expand_filer_entries(u32 begin, u32 length,
1231                                      struct filer_table *tab)
1232 {
1233         if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
1234             begin > MAX_FILER_CACHE_IDX)
1235                 return -EINVAL;
1236
1237         gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1238                                 tab->index - length + 1);
1239
1240         tab->index += length;
1241         return 0;
1242 }
1243
1244 static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1245 {
1246         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1247              start++) {
1248                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1249                     (RQFCR_AND | RQFCR_CLE))
1250                         return start;
1251         }
1252         return -1;
1253 }
1254
1255 static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1256 {
1257         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1258              start++) {
1259                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1260                     (RQFCR_CLE))
1261                         return start;
1262         }
1263         return -1;
1264 }
1265
1266 /* Uses hardwares clustering option to reduce
1267  * the number of filer table entries
1268  */
1269 static void gfar_cluster_filer(struct filer_table *tab)
1270 {
1271         s32 i = -1, j, iend, jend;
1272
1273         while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1274                 j = i;
1275                 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1276                         /* The cluster entries self and the previous one
1277                          * (a mask) must be identical!
1278                          */
1279                         if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1280                                 break;
1281                         if (tab->fe[i].prop != tab->fe[j].prop)
1282                                 break;
1283                         if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1284                                 break;
1285                         if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1286                                 break;
1287                         iend = gfar_get_next_cluster_end(i, tab);
1288                         jend = gfar_get_next_cluster_end(j, tab);
1289                         if (jend == -1 || iend == -1)
1290                                 break;
1291
1292                         /* First we make some free space, where our cluster
1293                          * element should be. Then we copy it there and finally
1294                          * delete in from its old location.
1295                          */
1296                         if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
1297                             -EINVAL)
1298                                 break;
1299
1300                         gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1301                                                 &(tab->fe[jend + 1]), jend - j);
1302
1303                         if (gfar_trim_filer_entries(jend - 1,
1304                                                     jend + (jend - j),
1305                                                     tab) == -EINVAL)
1306                                 return;
1307
1308                         /* Mask out cluster bit */
1309                         tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1310                 }
1311         }
1312 }
1313
1314 /* Swaps the masked bits of a1<>a2 and b1<>b2 */
1315 static void gfar_swap_bits(struct gfar_filer_entry *a1,
1316                            struct gfar_filer_entry *a2,
1317                            struct gfar_filer_entry *b1,
1318                            struct gfar_filer_entry *b2, u32 mask)
1319 {
1320         u32 temp[4];
1321         temp[0] = a1->ctrl & mask;
1322         temp[1] = a2->ctrl & mask;
1323         temp[2] = b1->ctrl & mask;
1324         temp[3] = b2->ctrl & mask;
1325
1326         a1->ctrl &= ~mask;
1327         a2->ctrl &= ~mask;
1328         b1->ctrl &= ~mask;
1329         b2->ctrl &= ~mask;
1330
1331         a1->ctrl |= temp[1];
1332         a2->ctrl |= temp[0];
1333         b1->ctrl |= temp[3];
1334         b2->ctrl |= temp[2];
1335 }
1336
1337 /* Generate a list consisting of masks values with their start and
1338  * end of validity and block as indicator for parts belonging
1339  * together (glued by ANDs) in mask_table
1340  */
1341 static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1342                                     struct filer_table *tab)
1343 {
1344         u32 i, and_index = 0, block_index = 1;
1345
1346         for (i = 0; i < tab->index; i++) {
1347
1348                 /* LSByte of control = 0 sets a mask */
1349                 if (!(tab->fe[i].ctrl & 0xF)) {
1350                         mask_table[and_index].mask = tab->fe[i].prop;
1351                         mask_table[and_index].start = i;
1352                         mask_table[and_index].block = block_index;
1353                         if (and_index >= 1)
1354                                 mask_table[and_index - 1].end = i - 1;
1355                         and_index++;
1356                 }
1357                 /* cluster starts and ends will be separated because they should
1358                  * hold their position
1359                  */
1360                 if (tab->fe[i].ctrl & RQFCR_CLE)
1361                         block_index++;
1362                 /* A not set AND indicates the end of a depended block */
1363                 if (!(tab->fe[i].ctrl & RQFCR_AND))
1364                         block_index++;
1365         }
1366
1367         mask_table[and_index - 1].end = i - 1;
1368
1369         return and_index;
1370 }
1371
1372 /* Sorts the entries of mask_table by the values of the masks.
1373  * Important: The 0xFF80 flags of the first and last entry of a
1374  * block must hold their position (which queue, CLusterEnable, ReJEct,
1375  * AND)
1376  */
1377 static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1378                                  struct filer_table *temp_table, u32 and_index)
1379 {
1380         /* Pointer to compare function (_asc or _desc) */
1381         int (*gfar_comp)(const void *, const void *);
1382
1383         u32 i, size = 0, start = 0, prev = 1;
1384         u32 old_first, old_last, new_first, new_last;
1385
1386         gfar_comp = &gfar_comp_desc;
1387
1388         for (i = 0; i < and_index; i++) {
1389                 if (prev != mask_table[i].block) {
1390                         old_first = mask_table[start].start + 1;
1391                         old_last = mask_table[i - 1].end;
1392                         sort(mask_table + start, size,
1393                              sizeof(struct gfar_mask_entry),
1394                              gfar_comp, &gfar_swap);
1395
1396                         /* Toggle order for every block. This makes the
1397                          * thing more efficient!
1398                          */
1399                         if (gfar_comp == gfar_comp_desc)
1400                                 gfar_comp = &gfar_comp_asc;
1401                         else
1402                                 gfar_comp = &gfar_comp_desc;
1403
1404                         new_first = mask_table[start].start + 1;
1405                         new_last = mask_table[i - 1].end;
1406
1407                         gfar_swap_bits(&temp_table->fe[new_first],
1408                                        &temp_table->fe[old_first],
1409                                        &temp_table->fe[new_last],
1410                                        &temp_table->fe[old_last],
1411                                        RQFCR_QUEUE | RQFCR_CLE |
1412                                        RQFCR_RJE | RQFCR_AND);
1413
1414                         start = i;
1415                         size = 0;
1416                 }
1417                 size++;
1418                 prev = mask_table[i].block;
1419         }
1420 }
1421
1422 /* Reduces the number of masks needed in the filer table to save entries
1423  * This is done by sorting the masks of a depended block. A depended block is
1424  * identified by gluing ANDs or CLE. The sorting order toggles after every
1425  * block. Of course entries in scope of a mask must change their location with
1426  * it.
1427  */
1428 static int gfar_optimize_filer_masks(struct filer_table *tab)
1429 {
1430         struct filer_table *temp_table;
1431         struct gfar_mask_entry *mask_table;
1432
1433         u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1434         s32 ret = 0;
1435
1436         /* We need a copy of the filer table because
1437          * we want to change its order
1438          */
1439         temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1440         if (temp_table == NULL)
1441                 return -ENOMEM;
1442
1443         mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1444                              sizeof(struct gfar_mask_entry), GFP_KERNEL);
1445
1446         if (mask_table == NULL) {
1447                 ret = -ENOMEM;
1448                 goto end;
1449         }
1450
1451         and_index = gfar_generate_mask_table(mask_table, tab);
1452
1453         gfar_sort_mask_table(mask_table, temp_table, and_index);
1454
1455         /* Now we can copy the data from our duplicated filer table to
1456          * the real one in the order the mask table says
1457          */
1458         for (i = 0; i < and_index; i++) {
1459                 size = mask_table[i].end - mask_table[i].start + 1;
1460                 gfar_copy_filer_entries(&(tab->fe[j]),
1461                                 &(temp_table->fe[mask_table[i].start]), size);
1462                 j += size;
1463         }
1464
1465         /* And finally we just have to check for duplicated masks and drop the
1466          * second ones
1467          */
1468         for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1469                 if (tab->fe[i].ctrl == 0x80) {
1470                         previous_mask = i++;
1471                         break;
1472                 }
1473         }
1474         for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1475                 if (tab->fe[i].ctrl == 0x80) {
1476                         if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1477                                 /* Two identical ones found!
1478                                  * So drop the second one!
1479                                  */
1480                                 gfar_trim_filer_entries(i, i, tab);
1481                         } else
1482                                 /* Not identical! */
1483                                 previous_mask = i;
1484                 }
1485         }
1486
1487         kfree(mask_table);
1488 end:    kfree(temp_table);
1489         return ret;
1490 }
1491
1492 /* Write the bit-pattern from software's buffer to hardware registers */
1493 static int gfar_write_filer_table(struct gfar_private *priv,
1494                                   struct filer_table *tab)
1495 {
1496         u32 i = 0;
1497         if (tab->index > MAX_FILER_IDX - 1)
1498                 return -EBUSY;
1499
1500         /* Avoid inconsistent filer table to be processed */
1501         lock_rx_qs(priv);
1502
1503         /* Fill regular entries */
1504         for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl);
1505              i++)
1506                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1507         /* Fill the rest with fall-troughs */
1508         for (; i < MAX_FILER_IDX - 1; i++)
1509                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1510         /* Last entry must be default accept
1511          * because that's what people expect
1512          */
1513         gfar_write_filer(priv, i, 0x20, 0x0);
1514
1515         unlock_rx_qs(priv);
1516
1517         return 0;
1518 }
1519
1520 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1521                                  struct gfar_private *priv)
1522 {
1523
1524         if (flow->flow_type & FLOW_EXT) {
1525                 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1526                         netdev_warn(priv->ndev,
1527                                     "User-specific data not supported!\n");
1528                 if (~flow->m_ext.vlan_etype)
1529                         netdev_warn(priv->ndev,
1530                                     "VLAN-etype not supported!\n");
1531         }
1532         if (flow->flow_type == IP_USER_FLOW)
1533                 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1534                         netdev_warn(priv->ndev,
1535                                     "IP-Version differing from IPv4 not supported!\n");
1536
1537         return 0;
1538 }
1539
1540 static int gfar_process_filer_changes(struct gfar_private *priv)
1541 {
1542         struct ethtool_flow_spec_container *j;
1543         struct filer_table *tab;
1544         s32 i = 0;
1545         s32 ret = 0;
1546
1547         /* So index is set to zero, too! */
1548         tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1549         if (tab == NULL)
1550                 return -ENOMEM;
1551
1552         /* Now convert the existing filer data from flow_spec into
1553          * filer tables binary format
1554          */
1555         list_for_each_entry(j, &priv->rx_list.list, list) {
1556                 ret = gfar_convert_to_filer(&j->fs, tab);
1557                 if (ret == -EBUSY) {
1558                         netdev_err(priv->ndev,
1559                                    "Rule not added: No free space!\n");
1560                         goto end;
1561                 }
1562                 if (ret == -1) {
1563                         netdev_err(priv->ndev,
1564                                    "Rule not added: Unsupported Flow-type!\n");
1565                         goto end;
1566                 }
1567         }
1568
1569         i = tab->index;
1570
1571         /* Optimizations to save entries */
1572         gfar_cluster_filer(tab);
1573         gfar_optimize_filer_masks(tab);
1574
1575         pr_debug("\n\tSummary:\n"
1576                  "\tData on hardware: %d\n"
1577                  "\tCompression rate: %d%%\n",
1578                  tab->index, 100 - (100 * tab->index) / i);
1579
1580         /* Write everything to hardware */
1581         ret = gfar_write_filer_table(priv, tab);
1582         if (ret == -EBUSY) {
1583                 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1584                 goto end;
1585         }
1586
1587 end:
1588         kfree(tab);
1589         return ret;
1590 }
1591
1592 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1593 {
1594         u32 i = 0;
1595
1596         for (i = 0; i < sizeof(flow->m_u); i++)
1597                 flow->m_u.hdata[i] ^= 0xFF;
1598
1599         flow->m_ext.vlan_etype ^= 0xFFFF;
1600         flow->m_ext.vlan_tci ^= 0xFFFF;
1601         flow->m_ext.data[0] ^= ~0;
1602         flow->m_ext.data[1] ^= ~0;
1603 }
1604
1605 static int gfar_add_cls(struct gfar_private *priv,
1606                         struct ethtool_rx_flow_spec *flow)
1607 {
1608         struct ethtool_flow_spec_container *temp, *comp;
1609         int ret = 0;
1610
1611         temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1612         if (temp == NULL)
1613                 return -ENOMEM;
1614         memcpy(&temp->fs, flow, sizeof(temp->fs));
1615
1616         gfar_invert_masks(&temp->fs);
1617         ret = gfar_check_capability(&temp->fs, priv);
1618         if (ret)
1619                 goto clean_mem;
1620         /* Link in the new element at the right @location */
1621         if (list_empty(&priv->rx_list.list)) {
1622                 ret = gfar_check_filer_hardware(priv);
1623                 if (ret != 0)
1624                         goto clean_mem;
1625                 list_add(&temp->list, &priv->rx_list.list);
1626                 goto process;
1627         } else {
1628                 list_for_each_entry(comp, &priv->rx_list.list, list) {
1629                         if (comp->fs.location > flow->location) {
1630                                 list_add_tail(&temp->list, &comp->list);
1631                                 goto process;
1632                         }
1633                         if (comp->fs.location == flow->location) {
1634                                 netdev_err(priv->ndev,
1635                                            "Rule not added: ID %d not free!\n",
1636                                            flow->location);
1637                                 ret = -EBUSY;
1638                                 goto clean_mem;
1639                         }
1640                 }
1641                 list_add_tail(&temp->list, &priv->rx_list.list);
1642         }
1643
1644 process:
1645         ret = gfar_process_filer_changes(priv);
1646         if (ret)
1647                 goto clean_list;
1648         priv->rx_list.count++;
1649         return ret;
1650
1651 clean_list:
1652         list_del(&temp->list);
1653 clean_mem:
1654         kfree(temp);
1655         return ret;
1656 }
1657
1658 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1659 {
1660         struct ethtool_flow_spec_container *comp;
1661         u32 ret = -EINVAL;
1662
1663         if (list_empty(&priv->rx_list.list))
1664                 return ret;
1665
1666         list_for_each_entry(comp, &priv->rx_list.list, list) {
1667                 if (comp->fs.location == loc) {
1668                         list_del(&comp->list);
1669                         kfree(comp);
1670                         priv->rx_list.count--;
1671                         gfar_process_filer_changes(priv);
1672                         ret = 0;
1673                         break;
1674                 }
1675         }
1676
1677         return ret;
1678 }
1679
1680 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1681 {
1682         struct ethtool_flow_spec_container *comp;
1683         u32 ret = -EINVAL;
1684
1685         list_for_each_entry(comp, &priv->rx_list.list, list) {
1686                 if (comp->fs.location == cmd->fs.location) {
1687                         memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1688                         gfar_invert_masks(&cmd->fs);
1689                         ret = 0;
1690                         break;
1691                 }
1692         }
1693
1694         return ret;
1695 }
1696
1697 static int gfar_get_cls_all(struct gfar_private *priv,
1698                             struct ethtool_rxnfc *cmd, u32 *rule_locs)
1699 {
1700         struct ethtool_flow_spec_container *comp;
1701         u32 i = 0;
1702
1703         list_for_each_entry(comp, &priv->rx_list.list, list) {
1704                 if (i == cmd->rule_cnt)
1705                         return -EMSGSIZE;
1706                 rule_locs[i] = comp->fs.location;
1707                 i++;
1708         }
1709
1710         cmd->data = MAX_FILER_IDX;
1711         cmd->rule_cnt = i;
1712
1713         return 0;
1714 }
1715
1716 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1717 {
1718         struct gfar_private *priv = netdev_priv(dev);
1719         int ret = 0;
1720
1721         mutex_lock(&priv->rx_queue_access);
1722
1723         switch (cmd->cmd) {
1724         case ETHTOOL_SRXFH:
1725                 ret = gfar_set_hash_opts(priv, cmd);
1726                 break;
1727         case ETHTOOL_SRXCLSRLINS:
1728                 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1729                      cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1730                     cmd->fs.location >= MAX_FILER_IDX) {
1731                         ret = -EINVAL;
1732                         break;
1733                 }
1734                 ret = gfar_add_cls(priv, &cmd->fs);
1735                 break;
1736         case ETHTOOL_SRXCLSRLDEL:
1737                 ret = gfar_del_cls(priv, cmd->fs.location);
1738                 break;
1739         default:
1740                 ret = -EINVAL;
1741         }
1742
1743         mutex_unlock(&priv->rx_queue_access);
1744
1745         return ret;
1746 }
1747
1748 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1749                         u32 *rule_locs)
1750 {
1751         struct gfar_private *priv = netdev_priv(dev);
1752         int ret = 0;
1753
1754         switch (cmd->cmd) {
1755         case ETHTOOL_GRXRINGS:
1756                 cmd->data = priv->num_rx_queues;
1757                 break;
1758         case ETHTOOL_GRXCLSRLCNT:
1759                 cmd->rule_cnt = priv->rx_list.count;
1760                 break;
1761         case ETHTOOL_GRXCLSRULE:
1762                 ret = gfar_get_cls(priv, cmd);
1763                 break;
1764         case ETHTOOL_GRXCLSRLALL:
1765                 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1766                 break;
1767         default:
1768                 ret = -EINVAL;
1769                 break;
1770         }
1771
1772         return ret;
1773 }
1774
1775 int gfar_phc_index = -1;
1776
1777 static int gfar_get_ts_info(struct net_device *dev,
1778                             struct ethtool_ts_info *info)
1779 {
1780         struct gfar_private *priv = netdev_priv(dev);
1781
1782         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1783                 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1784                                         SOF_TIMESTAMPING_SOFTWARE;
1785                 info->phc_index = -1;
1786                 return 0;
1787         }
1788         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1789                                 SOF_TIMESTAMPING_RX_HARDWARE |
1790                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1791         info->phc_index = gfar_phc_index;
1792         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1793                          (1 << HWTSTAMP_TX_ON);
1794         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1795                            (1 << HWTSTAMP_FILTER_ALL);
1796         return 0;
1797 }
1798
1799 const struct ethtool_ops gfar_ethtool_ops = {
1800         .get_settings = gfar_gsettings,
1801         .set_settings = gfar_ssettings,
1802         .get_drvinfo = gfar_gdrvinfo,
1803         .get_regs_len = gfar_reglen,
1804         .get_regs = gfar_get_regs,
1805         .get_link = ethtool_op_get_link,
1806         .get_coalesce = gfar_gcoalesce,
1807         .set_coalesce = gfar_scoalesce,
1808         .get_ringparam = gfar_gringparam,
1809         .set_ringparam = gfar_sringparam,
1810         .get_strings = gfar_gstrings,
1811         .get_sset_count = gfar_sset_count,
1812         .get_ethtool_stats = gfar_fill_stats,
1813         .get_msglevel = gfar_get_msglevel,
1814         .set_msglevel = gfar_set_msglevel,
1815 #ifdef CONFIG_PM
1816         .get_wol = gfar_get_wol,
1817         .set_wol = gfar_set_wol,
1818 #endif
1819         .set_rxnfc = gfar_set_nfc,
1820         .get_rxnfc = gfar_get_nfc,
1821         .get_ts_info = gfar_get_ts_info,
1822 };