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/delay.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/net_tstamp.h>
  29 #include <linux/skbuff.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/mm.h>
  32
  33 #include <asm/io.h>
  34 #include <asm/irq.h>
  35 #include <asm/uaccess.h>
  36 #include <linux/module.h>
  37 #include <linux/crc32.h>
  38 #include <asm/types.h>
  39 #include <linux/ethtool.h>
  40 #include <linux/mii.h>
  41 #include <linux/phy.h>
  42 #include <linux/sort.h>
  43 #include <linux/if_vlan.h>
  44
  45 #include "gianfar.h"
  46
  47 #define GFAR_MAX_COAL_USECS 0xffff
  48 #define GFAR_MAX_COAL_FRAMES 0xff
  49 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  50                             u64 *buf);
  51 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
  52 static int gfar_gcoalesce(struct net_device *dev,
  53                           struct ethtool_coalesce *cvals);
  54 static int gfar_scoalesce(struct net_device *dev,
  55                           struct ethtool_coalesce *cvals);
  56 static void gfar_gringparam(struct net_device *dev,
  57                             struct ethtool_ringparam *rvals);
  58 static int gfar_sringparam(struct net_device *dev,
  59                            struct ethtool_ringparam *rvals);
  60 static void gfar_gdrvinfo(struct net_device *dev,
  61                           struct ethtool_drvinfo *drvinfo);
  62
  63 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  64         "rx-large-frame-errors",
  65         "rx-short-frame-errors",
  66         "rx-non-octet-errors",
  67         "rx-crc-errors",
  68         "rx-overrun-errors",
  69         "rx-busy-errors",
  70         "rx-babbling-errors",
  71         "rx-truncated-frames",
  72         "ethernet-bus-error",
  73         "tx-babbling-errors",
  74         "tx-underrun-errors",
  75         "rx-skb-missing-errors",
  76         "tx-timeout-errors",
  77         "tx-rx-64-frames",
  78         "tx-rx-65-127-frames",
  79         "tx-rx-128-255-frames",
  80         "tx-rx-256-511-frames",
  81         "tx-rx-512-1023-frames",
  82         "tx-rx-1024-1518-frames",
  83         "tx-rx-1519-1522-good-vlan",
  84         "rx-bytes",
  85         "rx-packets",
  86         "rx-fcs-errors",
  87         "receive-multicast-packet",
  88         "receive-broadcast-packet",
  89         "rx-control-frame-packets",
  90         "rx-pause-frame-packets",
  91         "rx-unknown-op-code",
  92         "rx-alignment-error",
  93         "rx-frame-length-error",
  94         "rx-code-error",
  95         "rx-carrier-sense-error",
  96         "rx-undersize-packets",
  97         "rx-oversize-packets",
  98         "rx-fragmented-frames",
  99         "rx-jabber-frames",
 100         "rx-dropped-frames",
 101         "tx-byte-counter",
 102         "tx-packets",
 103         "tx-multicast-packets",
 104         "tx-broadcast-packets",
 105         "tx-pause-control-frames",
 106         "tx-deferral-packets",
 107         "tx-excessive-deferral-packets",
 108         "tx-single-collision-packets",
 109         "tx-multiple-collision-packets",
 110         "tx-late-collision-packets",
 111         "tx-excessive-collision-packets",
 112         "tx-total-collision",
 113         "reserved",
 114         "tx-dropped-frames",
 115         "tx-jabber-frames",
 116         "tx-fcs-errors",
 117         "tx-control-frames",
 118         "tx-oversize-frames",
 119         "tx-undersize-frames",
 120         "tx-fragmented-frames",
 121 };
 122
 123 /* Fill in a buffer with the strings which correspond to the
 124  * stats */
 125 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
 126 {
 127         struct gfar_private *priv = netdev_priv(dev);
 128
 129         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 130                 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
 131         else
 132                 memcpy(buf, stat_gstrings,
 133                        GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
 134 }
 135
 136 /* Fill in an array of 64-bit statistics from various sources.
 137  * This array will be appended to the end of the ethtool_stats
 138  * structure, and returned to user space
 139  */
 140 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
 141                             u64 *buf)
 142 {
 143         int i;
 144         struct gfar_private *priv = netdev_priv(dev);
 145         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 146         atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
 147
 148         for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 149                 buf[i] = atomic64_read(&extra[i]);
 150
 151         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
 152                 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
 153
 154                 for (; i < GFAR_STATS_LEN; i++, rmon++)
 155                         buf[i] = (u64) gfar_read(rmon);
 156         }
 157 }
 158
 159 static int gfar_sset_count(struct net_device *dev, int sset)
 160 {
 161         struct gfar_private *priv = netdev_priv(dev);
 162
 163         switch (sset) {
 164         case ETH_SS_STATS:
 165                 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 166                         return GFAR_STATS_LEN;
 167                 else
 168                         return GFAR_EXTRA_STATS_LEN;
 169         default:
 170                 return -EOPNOTSUPP;
 171         }
 172 }
 173
 174 /* Fills in the drvinfo structure with some basic info */
 175 static void gfar_gdrvinfo(struct net_device *dev,
 176                           struct ethtool_drvinfo *drvinfo)
 177 {
 178         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 179         strlcpy(drvinfo->version, gfar_driver_version,
 180                 sizeof(drvinfo->version));
 181         strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
 182         strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
 183         drvinfo->regdump_len = 0;
 184         drvinfo->eedump_len = 0;
 185 }
 186
 187
 188 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
 189 {
 190         struct gfar_private *priv = netdev_priv(dev);
 191         struct phy_device *phydev = priv->phydev;
 192
 193         if (NULL == phydev)
 194                 return -ENODEV;
 195
 196         return phy_ethtool_sset(phydev, cmd);
 197 }
 198
 199
 200 /* Return the current settings in the ethtool_cmd structure */
 201 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 202 {
 203         struct gfar_private *priv = netdev_priv(dev);
 204         struct phy_device *phydev = priv->phydev;
 205         struct gfar_priv_rx_q *rx_queue = NULL;
 206         struct gfar_priv_tx_q *tx_queue = NULL;
 207
 208         if (NULL == phydev)
 209                 return -ENODEV;
 210         tx_queue = priv->tx_queue[0];
 211         rx_queue = priv->rx_queue[0];
 212
 213         /* etsec-1.7 and older versions have only one txic
 214          * and rxic regs although they support multiple queues */
 215         cmd->maxtxpkt = get_icft_value(tx_queue->txic);
 216         cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
 217
 218         return phy_ethtool_gset(phydev, cmd);
 219 }
 220
 221 /* Return the length of the register structure */
 222 static int gfar_reglen(struct net_device *dev)
 223 {
 224         return sizeof (struct gfar);
 225 }
 226
 227 /* Return a dump of the GFAR register space */
 228 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 229                           void *regbuf)
 230 {
 231         int i;
 232         struct gfar_private *priv = netdev_priv(dev);
 233         u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 234         u32 *buf = (u32 *) regbuf;
 235
 236         for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 237                 buf[i] = gfar_read(&theregs[i]);
 238 }
 239
 240 /* Convert microseconds to ethernet clock ticks, which changes
 241  * depending on what speed the controller is running at */
 242 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 243                                      unsigned int usecs)
 244 {
 245         unsigned int count;
 246
 247         /* The timer is different, depending on the interface speed */
 248         switch (priv->phydev->speed) {
 249         case SPEED_1000:
 250                 count = GFAR_GBIT_TIME;
 251                 break;
 252         case SPEED_100:
 253                 count = GFAR_100_TIME;
 254                 break;
 255         case SPEED_10:
 256         default:
 257                 count = GFAR_10_TIME;
 258                 break;
 259         }
 260
 261         /* Make sure we return a number greater than 0
 262          * if usecs > 0 */
 263         return (usecs * 1000 + count - 1) / count;
 264 }
 265
 266 /* Convert ethernet clock ticks to microseconds */
 267 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 268                                      unsigned int ticks)
 269 {
 270         unsigned int count;
 271
 272         /* The timer is different, depending on the interface speed */
 273         switch (priv->phydev->speed) {
 274         case SPEED_1000:
 275                 count = GFAR_GBIT_TIME;
 276                 break;
 277         case SPEED_100:
 278                 count = GFAR_100_TIME;
 279                 break;
 280         case SPEED_10:
 281         default:
 282                 count = GFAR_10_TIME;
 283                 break;
 284         }
 285
 286         /* Make sure we return a number greater than 0 */
 287         /* if ticks is > 0 */
 288         return (ticks * count) / 1000;
 289 }
 290
 291 /* Get the coalescing parameters, and put them in the cvals
 292  * structure.  */
 293 static int gfar_gcoalesce(struct net_device *dev,
 294                           struct ethtool_coalesce *cvals)
 295 {
 296         struct gfar_private *priv = netdev_priv(dev);
 297         struct gfar_priv_rx_q *rx_queue = NULL;
 298         struct gfar_priv_tx_q *tx_queue = NULL;
 299         unsigned long rxtime;
 300         unsigned long rxcount;
 301         unsigned long txtime;
 302         unsigned long txcount;
 303
 304         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 305                 return -EOPNOTSUPP;
 306
 307         if (NULL == priv->phydev)
 308                 return -ENODEV;
 309
 310         rx_queue = priv->rx_queue[0];
 311         tx_queue = priv->tx_queue[0];
 312
 313         rxtime  = get_ictt_value(rx_queue->rxic);
 314         rxcount = get_icft_value(rx_queue->rxic);
 315         txtime  = get_ictt_value(tx_queue->txic);
 316         txcount = get_icft_value(tx_queue->txic);
 317         cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 318         cvals->rx_max_coalesced_frames = rxcount;
 319
 320         cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 321         cvals->tx_max_coalesced_frames = txcount;
 322
 323         cvals->use_adaptive_rx_coalesce = 0;
 324         cvals->use_adaptive_tx_coalesce = 0;
 325
 326         cvals->pkt_rate_low = 0;
 327         cvals->rx_coalesce_usecs_low = 0;
 328         cvals->rx_max_coalesced_frames_low = 0;
 329         cvals->tx_coalesce_usecs_low = 0;
 330         cvals->tx_max_coalesced_frames_low = 0;
 331
 332         /* When the packet rate is below pkt_rate_high but above
 333          * pkt_rate_low (both measured in packets per second) the
 334          * normal {rx,tx}_* coalescing parameters are used.
 335          */
 336
 337         /* When the packet rate is (measured in packets per second)
 338          * is above pkt_rate_high, the {rx,tx}_*_high parameters are
 339          * used.
 340          */
 341         cvals->pkt_rate_high = 0;
 342         cvals->rx_coalesce_usecs_high = 0;
 343         cvals->rx_max_coalesced_frames_high = 0;
 344         cvals->tx_coalesce_usecs_high = 0;
 345         cvals->tx_max_coalesced_frames_high = 0;
 346
 347         /* How often to do adaptive coalescing packet rate sampling,
 348          * measured in seconds.  Must not be zero.
 349          */
 350         cvals->rate_sample_interval = 0;
 351
 352         return 0;
 353 }
 354
 355 /* Change the coalescing values.
 356  * Both cvals->*_usecs and cvals->*_frames have to be > 0
 357  * in order for coalescing to be active
 358  */
 359 static int gfar_scoalesce(struct net_device *dev,
 360                           struct ethtool_coalesce *cvals)
 361 {
 362         struct gfar_private *priv = netdev_priv(dev);
 363         int i, err = 0;
 364
 365         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 366                 return -EOPNOTSUPP;
 367
 368         if (NULL == priv->phydev)
 369                 return -ENODEV;
 370
 371         /* Check the bounds of the values */
 372         if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 373                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 374                             GFAR_MAX_COAL_USECS);
 375                 return -EINVAL;
 376         }
 377
 378         if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 379                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 380                             GFAR_MAX_COAL_FRAMES);
 381                 return -EINVAL;
 382         }
 383
 384         /* Check the bounds of the values */
 385         if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 386                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 387                             GFAR_MAX_COAL_USECS);
 388                 return -EINVAL;
 389         }
 390
 391         if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 392                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 393                             GFAR_MAX_COAL_FRAMES);
 394                 return -EINVAL;
 395         }
 396
 397         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 398                 cpu_relax();
 399
 400         /* Set up rx coalescing */
 401         if ((cvals->rx_coalesce_usecs == 0) ||
 402             (cvals->rx_max_coalesced_frames == 0)) {
 403                 for (i = 0; i < priv->num_rx_queues; i++)
 404                         priv->rx_queue[i]->rxcoalescing = 0;
 405         } else {
 406                 for (i = 0; i < priv->num_rx_queues; i++)
 407                         priv->rx_queue[i]->rxcoalescing = 1;
 408         }
 409
 410         for (i = 0; i < priv->num_rx_queues; i++) {
 411                 priv->rx_queue[i]->rxic = mk_ic_value(
 412                         cvals->rx_max_coalesced_frames,
 413                         gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 414         }
 415
 416         /* Set up tx coalescing */
 417         if ((cvals->tx_coalesce_usecs == 0) ||
 418             (cvals->tx_max_coalesced_frames == 0)) {
 419                 for (i = 0; i < priv->num_tx_queues; i++)
 420                         priv->tx_queue[i]->txcoalescing = 0;
 421         } else {
 422                 for (i = 0; i < priv->num_tx_queues; i++)
 423                         priv->tx_queue[i]->txcoalescing = 1;
 424         }
 425
 426         for (i = 0; i < priv->num_tx_queues; i++) {
 427                 priv->tx_queue[i]->txic = mk_ic_value(
 428                         cvals->tx_max_coalesced_frames,
 429                         gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 430         }
 431
 432         if (dev->flags & IFF_UP) {
 433                 stop_gfar(dev);
 434                 err = startup_gfar(dev);
 435         } else {
 436                 gfar_mac_reset(priv);
 437         }
 438
 439         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 440
 441         return err;
 442 }
 443
 444 /* Fills in rvals with the current ring parameters.  Currently,
 445  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 446  * jumbo are ignored by the driver */
 447 static void gfar_gringparam(struct net_device *dev,
 448                             struct ethtool_ringparam *rvals)
 449 {
 450         struct gfar_private *priv = netdev_priv(dev);
 451         struct gfar_priv_tx_q *tx_queue = NULL;
 452         struct gfar_priv_rx_q *rx_queue = NULL;
 453
 454         tx_queue = priv->tx_queue[0];
 455         rx_queue = priv->rx_queue[0];
 456
 457         rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 458         rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 459         rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 460         rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 461
 462         /* Values changeable by the user.  The valid values are
 463          * in the range 1 to the "*_max_pending" counterpart above.
 464          */
 465         rvals->rx_pending = rx_queue->rx_ring_size;
 466         rvals->rx_mini_pending = rx_queue->rx_ring_size;
 467         rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 468         rvals->tx_pending = tx_queue->tx_ring_size;
 469 }
 470
 471 /* Change the current ring parameters, stopping the controller if
 472  * necessary so that we don't mess things up while we're in motion.
 473  */
 474 static int gfar_sringparam(struct net_device *dev,
 475                            struct ethtool_ringparam *rvals)
 476 {
 477         struct gfar_private *priv = netdev_priv(dev);
 478         int err = 0, i;
 479
 480         if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 481                 return -EINVAL;
 482
 483         if (!is_power_of_2(rvals->rx_pending)) {
 484                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 485                 return -EINVAL;
 486         }
 487
 488         if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 489                 return -EINVAL;
 490
 491         if (!is_power_of_2(rvals->tx_pending)) {
 492                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 493                 return -EINVAL;
 494         }
 495
 496         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 497                 cpu_relax();
 498
 499         if (dev->flags & IFF_UP)
 500                 stop_gfar(dev);
 501
 502         /* Change the sizes */
 503         for (i = 0; i < priv->num_rx_queues; i++)
 504                 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 505
 506         for (i = 0; i < priv->num_tx_queues; i++)
 507                 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 508
 509         /* Rebuild the rings with the new size */
 510         if (dev->flags & IFF_UP)
 511                 err = startup_gfar(dev);
 512
 513         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 514
 515         return err;
 516 }
 517
 518 static void gfar_gpauseparam(struct net_device *dev,
 519                              struct ethtool_pauseparam *epause)
 520 {
 521         struct gfar_private *priv = netdev_priv(dev);
 522
 523         epause->autoneg = !!priv->pause_aneg_en;
 524         epause->rx_pause = !!priv->rx_pause_en;
 525         epause->tx_pause = !!priv->tx_pause_en;
 526 }
 527
 528 static int gfar_spauseparam(struct net_device *dev,
 529                             struct ethtool_pauseparam *epause)
 530 {
 531         struct gfar_private *priv = netdev_priv(dev);
 532         struct phy_device *phydev = priv->phydev;
 533         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 534         u32 oldadv, newadv;
 535
 536         if (!phydev)
 537                 return -ENODEV;
 538
 539         if (!(phydev->supported & SUPPORTED_Pause) ||
 540             (!(phydev->supported & SUPPORTED_Asym_Pause) &&
 541              (epause->rx_pause != epause->tx_pause)))
 542                 return -EINVAL;
 543
 544         priv->rx_pause_en = priv->tx_pause_en = 0;
 545         if (epause->rx_pause) {
 546                 priv->rx_pause_en = 1;
 547
 548                 if (epause->tx_pause) {
 549                         priv->tx_pause_en = 1;
 550                         /* FLOW_CTRL_RX & TX */
 551                         newadv = ADVERTISED_Pause;
 552                 } else  /* FLOW_CTLR_RX */
 553                         newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
 554         } else if (epause->tx_pause) {
 555                 priv->tx_pause_en = 1;
 556                 /* FLOW_CTLR_TX */
 557                 newadv = ADVERTISED_Asym_Pause;
 558         } else
 559                 newadv = 0;
 560
 561         if (epause->autoneg)
 562                 priv->pause_aneg_en = 1;
 563         else
 564                 priv->pause_aneg_en = 0;
 565
 566         oldadv = phydev->advertising &
 567                 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 568         if (oldadv != newadv) {
 569                 phydev->advertising &=
 570                         ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 571                 phydev->advertising |= newadv;
 572                 if (phydev->autoneg)
 573                         /* inform link partner of our
 574                          * new flow ctrl settings
 575                          */
 576                         return phy_start_aneg(phydev);
 577
 578                 if (!epause->autoneg) {
 579                         u32 tempval;
 580                         tempval = gfar_read(&regs->maccfg1);
 581                         tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 582
 583                         priv->tx_actual_en = 0;
 584                         if (priv->tx_pause_en) {
 585                                 priv->tx_actual_en = 1;
 586                                 tempval |= MACCFG1_TX_FLOW;
 587                         }
 588
 589                         if (priv->rx_pause_en)
 590                                 tempval |= MACCFG1_RX_FLOW;
 591                         gfar_write(&regs->maccfg1, tempval);
 592                 }
 593         }
 594
 595         return 0;
 596 }
 597
 598 int gfar_set_features(struct net_device *dev, netdev_features_t features)
 599 {
 600         netdev_features_t changed = dev->features ^ features;
 601         struct gfar_private *priv = netdev_priv(dev);
 602         int err = 0;
 603
 604         if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 605                          NETIF_F_RXCSUM)))
 606                 return 0;
 607
 608         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 609                 cpu_relax();
 610
 611         dev->features = features;
 612
 613         if (dev->flags & IFF_UP) {
 614                 /* Now we take down the rings to rebuild them */
 615                 stop_gfar(dev);
 616                 err = startup_gfar(dev);
 617         } else {
 618                 gfar_mac_reset(priv);
 619         }
 620
 621         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 622
 623         return err;
 624 }
 625
 626 static uint32_t gfar_get_msglevel(struct net_device *dev)
 627 {
 628         struct gfar_private *priv = netdev_priv(dev);
 629
 630         return priv->msg_enable;
 631 }
 632
 633 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 634 {
 635         struct gfar_private *priv = netdev_priv(dev);
 636
 637         priv->msg_enable = data;
 638 }
 639
 640 #ifdef CONFIG_PM
 641 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 642 {
 643         struct gfar_private *priv = netdev_priv(dev);
 644
 645         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
 646                 wol->supported = WAKE_MAGIC;
 647                 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
 648         } else {
 649                 wol->supported = wol->wolopts = 0;
 650         }
 651 }
 652
 653 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 654 {
 655         struct gfar_private *priv = netdev_priv(dev);
 656
 657         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
 658             wol->wolopts != 0)
 659                 return -EINVAL;
 660
 661         if (wol->wolopts & ~WAKE_MAGIC)
 662                 return -EINVAL;
 663
 664         device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
 665
 666         priv->wol_en = !!device_may_wakeup(&dev->dev);
 667
 668         return 0;
 669 }
 670 #endif
 671
 672 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 673 {
 674         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 675
 676         if (ethflow & RXH_L2DA) {
 677                 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
 678                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 679                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 680                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 681                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 682                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 683
 684                 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
 685                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 686                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 687                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 688                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 689                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 690         }
 691
 692         if (ethflow & RXH_VLAN) {
 693                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 694                       RQFCR_AND | RQFCR_HASHTBL_0;
 695                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 696                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 697                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 698                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 699         }
 700
 701         if (ethflow & RXH_IP_SRC) {
 702                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 703                       RQFCR_AND | RQFCR_HASHTBL_0;
 704                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 705                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 706                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 707                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 708         }
 709
 710         if (ethflow & (RXH_IP_DST)) {
 711                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 712                       RQFCR_AND | RQFCR_HASHTBL_0;
 713                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 714                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 715                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 716                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 717         }
 718
 719         if (ethflow & RXH_L3_PROTO) {
 720                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 721                       RQFCR_AND | RQFCR_HASHTBL_0;
 722                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 723                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 724                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 725                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 726         }
 727
 728         if (ethflow & RXH_L4_B_0_1) {
 729                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 730                       RQFCR_AND | RQFCR_HASHTBL_0;
 731                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 732                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 733                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 734                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 735         }
 736
 737         if (ethflow & RXH_L4_B_2_3) {
 738                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 739                       RQFCR_AND | RQFCR_HASHTBL_0;
 740                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 741                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 742                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 743                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 744         }
 745 }
 746
 747 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 748                                        u64 class)
 749 {
 750         unsigned int last_rule_idx = priv->cur_filer_idx;
 751         unsigned int cmp_rqfpr;
 752         unsigned int *local_rqfpr;
 753         unsigned int *local_rqfcr;
 754         int i = 0x0, k = 0x0;
 755         int j = MAX_FILER_IDX, l = 0x0;
 756         int ret = 1;
 757
 758         local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 759                                     GFP_KERNEL);
 760         local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 761                                     GFP_KERNEL);
 762         if (!local_rqfpr || !local_rqfcr) {
 763                 ret = 0;
 764                 goto err;
 765         }
 766
 767         switch (class) {
 768         case TCP_V4_FLOW:
 769                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 770                 break;
 771         case UDP_V4_FLOW:
 772                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 773                 break;
 774         case TCP_V6_FLOW:
 775                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 776                 break;
 777         case UDP_V6_FLOW:
 778                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 779                 break;
 780         default:
 781                 netdev_err(priv->ndev,
 782                            "Right now this class is not supported\n");
 783                 ret = 0;
 784                 goto err;
 785         }
 786
 787         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 788                 local_rqfpr[j] = priv->ftp_rqfpr[i];
 789                 local_rqfcr[j] = priv->ftp_rqfcr[i];
 790                 j--;
 791                 if ((priv->ftp_rqfcr[i] ==
 792                      (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 793                     (priv->ftp_rqfpr[i] == cmp_rqfpr))
 794                         break;
 795         }
 796
 797         if (i == MAX_FILER_IDX + 1) {
 798                 netdev_err(priv->ndev,
 799                            "No parse rule found, can't create hash rules\n");
 800                 ret = 0;
 801                 goto err;
 802         }
 803
 804         /* If a match was found, then it begins the starting of a cluster rule
 805          * if it was already programmed, we need to overwrite these rules
 806          */
 807         for (l = i+1; l < MAX_FILER_IDX; l++) {
 808                 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 809                     !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 810                         priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 811                                              RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 812                         priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 813                         gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 814                                          priv->ftp_rqfpr[l]);
 815                         break;
 816                 }
 817
 818                 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 819                         (priv->ftp_rqfcr[l] & RQFCR_AND))
 820                         continue;
 821                 else {
 822                         local_rqfpr[j] = priv->ftp_rqfpr[l];
 823                         local_rqfcr[j] = priv->ftp_rqfcr[l];
 824                         j--;
 825                 }
 826         }
 827
 828         priv->cur_filer_idx = l - 1;
 829         last_rule_idx = l;
 830
 831         /* hash rules */
 832         ethflow_to_filer_rules(priv, ethflow);
 833
 834         /* Write back the popped out rules again */
 835         for (k = j+1; k < MAX_FILER_IDX; k++) {
 836                 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 837                 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 838                 gfar_write_filer(priv, priv->cur_filer_idx,
 839                                  local_rqfcr[k], local_rqfpr[k]);
 840                 if (!priv->cur_filer_idx)
 841                         break;
 842                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 843         }
 844
 845 err:
 846         kfree(local_rqfcr);
 847         kfree(local_rqfpr);
 848         return ret;
 849 }
 850
 851 static int gfar_set_hash_opts(struct gfar_private *priv,
 852                               struct ethtool_rxnfc *cmd)
 853 {
 854         /* write the filer rules here */
 855         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 856                 return -EINVAL;
 857
 858         return 0;
 859 }
 860
 861 static int gfar_check_filer_hardware(struct gfar_private *priv)
 862 {
 863         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 864         u32 i;
 865
 866         /* Check if we are in FIFO mode */
 867         i = gfar_read(&regs->ecntrl);
 868         i &= ECNTRL_FIFM;
 869         if (i == ECNTRL_FIFM) {
 870                 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 871                 i = gfar_read(&regs->rctrl);
 872                 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 873                 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 874                         netdev_info(priv->ndev,
 875                                     "Receive Queue Filtering enabled\n");
 876                 } else {
 877                         netdev_warn(priv->ndev,
 878                                     "Receive Queue Filtering disabled\n");
 879                         return -EOPNOTSUPP;
 880                 }
 881         }
 882         /* Or in standard mode */
 883         else {
 884                 i = gfar_read(&regs->rctrl);
 885                 i &= RCTRL_PRSDEP_MASK;
 886                 if (i == RCTRL_PRSDEP_MASK) {
 887                         netdev_info(priv->ndev,
 888                                     "Receive Queue Filtering enabled\n");
 889                 } else {
 890                         netdev_warn(priv->ndev,
 891                                     "Receive Queue Filtering disabled\n");
 892                         return -EOPNOTSUPP;
 893                 }
 894         }
 895
 896         /* Sets the properties for arbitrary filer rule
 897          * to the first 4 Layer 4 Bytes
 898          */
 899         gfar_write(&regs->rbifx, 0xC0C1C2C3);
 900         return 0;
 901 }
 902
 903 static int gfar_comp_asc(const void *a, const void *b)
 904 {
 905         return memcmp(a, b, 4);
 906 }
 907
 908 static int gfar_comp_desc(const void *a, const void *b)
 909 {
 910         return -memcmp(a, b, 4);
 911 }
 912
 913 static void gfar_swap(void *a, void *b, int size)
 914 {
 915         u32 *_a = a;
 916         u32 *_b = b;
 917
 918         swap(_a[0], _b[0]);
 919         swap(_a[1], _b[1]);
 920         swap(_a[2], _b[2]);
 921         swap(_a[3], _b[3]);
 922 }
 923
 924 /* Write a mask to filer cache */
 925 static void gfar_set_mask(u32 mask, struct filer_table *tab)
 926 {
 927         tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 928         tab->fe[tab->index].prop = mask;
 929         tab->index++;
 930 }
 931
 932 /* Sets parse bits (e.g. IP or TCP) */
 933 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 934 {
 935         gfar_set_mask(mask, tab);
 936         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 937                                    RQFCR_AND;
 938         tab->fe[tab->index].prop = value;
 939         tab->index++;
 940 }
 941
 942 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 943                                        struct filer_table *tab)
 944 {
 945         gfar_set_mask(mask, tab);
 946         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 947         tab->fe[tab->index].prop = value;
 948         tab->index++;
 949 }
 950
 951 /* For setting a tuple of value and mask of type flag
 952  * Example:
 953  * IP-Src = 10.0.0.0/255.0.0.0
 954  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 955  *
 956  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 957  * For a don't care mask it gives us a 0
 958  *
 959  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 960  * and MAC stuff on an upper level (due to missing information on this level).
 961  * For these guys we can discard them if they are value=0 and mask=0.
 962  *
 963  * Further the all masks are one-padded for better hardware efficiency.
 964  */
 965 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 966                                struct filer_table *tab)
 967 {
 968         switch (flag) {
 969                 /* 3bit */
 970         case RQFCR_PID_PRI:
 971                 if (!(value | mask))
 972                         return;
 973                 mask |= RQFCR_PID_PRI_MASK;
 974                 break;
 975                 /* 8bit */
 976         case RQFCR_PID_L4P:
 977         case RQFCR_PID_TOS:
 978                 if (!~(mask | RQFCR_PID_L4P_MASK))
 979                         return;
 980                 if (!mask)
 981                         mask = ~0;
 982                 else
 983                         mask |= RQFCR_PID_L4P_MASK;
 984                 break;
 985                 /* 12bit */
 986         case RQFCR_PID_VID:
 987                 if (!(value | mask))
 988                         return;
 989                 mask |= RQFCR_PID_VID_MASK;
 990                 break;
 991                 /* 16bit */
 992         case RQFCR_PID_DPT:
 993         case RQFCR_PID_SPT:
 994         case RQFCR_PID_ETY:
 995                 if (!~(mask | RQFCR_PID_PORT_MASK))
 996                         return;
 997                 if (!mask)
 998                         mask = ~0;
 999                 else
1000                         mask |= RQFCR_PID_PORT_MASK;
1001                 break;
1002                 /* 24bit */
1003         case RQFCR_PID_DAH:
1004         case RQFCR_PID_DAL:
1005         case RQFCR_PID_SAH:
1006         case RQFCR_PID_SAL:
1007                 if (!(value | mask))
1008                         return;
1009                 mask |= RQFCR_PID_MAC_MASK;
1010                 break;
1011                 /* for all real 32bit masks */
1012         default:
1013                 if (!~mask)
1014                         return;
1015                 if (!mask)
1016                         mask = ~0;
1017                 break;
1018         }
1019         gfar_set_general_attribute(value, mask, flag, tab);
1020 }
1021
1022 /* Translates value and mask for UDP, TCP or SCTP */
1023 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
1024                               struct ethtool_tcpip4_spec *mask,
1025                               struct filer_table *tab)
1026 {
1027         gfar_set_attribute(be32_to_cpu(value->ip4src),
1028                            be32_to_cpu(mask->ip4src),
1029                            RQFCR_PID_SIA, tab);
1030         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1031                            be32_to_cpu(mask->ip4dst),
1032                            RQFCR_PID_DIA, tab);
1033         gfar_set_attribute(be16_to_cpu(value->pdst),
1034                            be16_to_cpu(mask->pdst),
1035                            RQFCR_PID_DPT, tab);
1036         gfar_set_attribute(be16_to_cpu(value->psrc),
1037                            be16_to_cpu(mask->psrc),
1038                            RQFCR_PID_SPT, tab);
1039         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1040 }
1041
1042 /* Translates value and mask for RAW-IP4 */
1043 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1044                              struct ethtool_usrip4_spec *mask,
1045                              struct filer_table *tab)
1046 {
1047         gfar_set_attribute(be32_to_cpu(value->ip4src),
1048                            be32_to_cpu(mask->ip4src),
1049                            RQFCR_PID_SIA, tab);
1050         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1051                            be32_to_cpu(mask->ip4dst),
1052                            RQFCR_PID_DIA, tab);
1053         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1054         gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1055         gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1056                            be32_to_cpu(mask->l4_4_bytes),
1057                            RQFCR_PID_ARB, tab);
1058
1059 }
1060
1061 /* Translates value and mask for ETHER spec */
1062 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1063                            struct filer_table *tab)
1064 {
1065         u32 upper_temp_mask = 0;
1066         u32 lower_temp_mask = 0;
1067
1068         /* Source address */
1069         if (!is_broadcast_ether_addr(mask->h_source)) {
1070                 if (is_zero_ether_addr(mask->h_source)) {
1071                         upper_temp_mask = 0xFFFFFFFF;
1072                         lower_temp_mask = 0xFFFFFFFF;
1073                 } else {
1074                         upper_temp_mask = mask->h_source[0] << 16 |
1075                                           mask->h_source[1] << 8  |
1076                                           mask->h_source[2];
1077                         lower_temp_mask = mask->h_source[3] << 16 |
1078                                           mask->h_source[4] << 8  |
1079                                           mask->h_source[5];
1080                 }
1081                 /* Upper 24bit */
1082                 gfar_set_attribute(value->h_source[0] << 16 |
1083                                    value->h_source[1] << 8  |
1084                                    value->h_source[2],
1085                                    upper_temp_mask, RQFCR_PID_SAH, tab);
1086                 /* And the same for the lower part */
1087                 gfar_set_attribute(value->h_source[3] << 16 |
1088                                    value->h_source[4] << 8  |
1089                                    value->h_source[5],
1090                                    lower_temp_mask, RQFCR_PID_SAL, tab);
1091         }
1092         /* Destination address */
1093         if (!is_broadcast_ether_addr(mask->h_dest)) {
1094                 /* Special for destination is limited broadcast */
1095                 if ((is_broadcast_ether_addr(value->h_dest) &&
1096                     is_zero_ether_addr(mask->h_dest))) {
1097                         gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1098                 } else {
1099                         if (is_zero_ether_addr(mask->h_dest)) {
1100                                 upper_temp_mask = 0xFFFFFFFF;
1101                                 lower_temp_mask = 0xFFFFFFFF;
1102                         } else {
1103                                 upper_temp_mask = mask->h_dest[0] << 16 |
1104                                                   mask->h_dest[1] << 8  |
1105                                                   mask->h_dest[2];
1106                                 lower_temp_mask = mask->h_dest[3] << 16 |
1107                                                   mask->h_dest[4] << 8  |
1108                                                   mask->h_dest[5];
1109                         }
1110
1111                         /* Upper 24bit */
1112                         gfar_set_attribute(value->h_dest[0] << 16 |
1113                                            value->h_dest[1] << 8  |
1114                                            value->h_dest[2],
1115                                            upper_temp_mask, RQFCR_PID_DAH, tab);
1116                         /* And the same for the lower part */
1117                         gfar_set_attribute(value->h_dest[3] << 16 |
1118                                            value->h_dest[4] << 8  |
1119                                            value->h_dest[5],
1120                                            lower_temp_mask, RQFCR_PID_DAL, tab);
1121                 }
1122         }
1123
1124         gfar_set_attribute(be16_to_cpu(value->h_proto),
1125                            be16_to_cpu(mask->h_proto),
1126                            RQFCR_PID_ETY, tab);
1127 }
1128
1129 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1130 {
1131         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1132 }
1133
1134 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1135 {
1136         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1137 }
1138
1139 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1140 {
1141         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1142 }
1143
1144 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1145 {
1146         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1147 }
1148
1149 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1150 {
1151         return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1152                 VLAN_PRIO_SHIFT;
1153 }
1154
1155 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1156 {
1157         return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1158                 VLAN_PRIO_SHIFT;
1159 }
1160
1161 /* Convert a rule to binary filter format of gianfar */
1162 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1163                                  struct filer_table *tab)
1164 {
1165         u32 vlan = 0, vlan_mask = 0;
1166         u32 id = 0, id_mask = 0;
1167         u32 cfi = 0, cfi_mask = 0;
1168         u32 prio = 0, prio_mask = 0;
1169         u32 old_index = tab->index;
1170
1171         /* Check if vlan is wanted */
1172         if ((rule->flow_type & FLOW_EXT) &&
1173             (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1174                 if (!rule->m_ext.vlan_tci)
1175                         rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1176
1177                 vlan = RQFPR_VLN;
1178                 vlan_mask = RQFPR_VLN;
1179
1180                 /* Separate the fields */
1181                 id = vlan_tci_vid(rule);
1182                 id_mask = vlan_tci_vidm(rule);
1183                 cfi = vlan_tci_cfi(rule);
1184                 cfi_mask = vlan_tci_cfim(rule);
1185                 prio = vlan_tci_prio(rule);
1186                 prio_mask = vlan_tci_priom(rule);
1187
1188                 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1189                         vlan |= RQFPR_CFI;
1190                         vlan_mask |= RQFPR_CFI;
1191                 } else if (cfi != VLAN_TAG_PRESENT &&
1192                            cfi_mask == VLAN_TAG_PRESENT) {
1193                         vlan_mask |= RQFPR_CFI;
1194                 }
1195         }
1196
1197         switch (rule->flow_type & ~FLOW_EXT) {
1198         case TCP_V4_FLOW:
1199                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1200                                     RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1201                 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1202                                   &rule->m_u.tcp_ip4_spec, tab);
1203                 break;
1204         case UDP_V4_FLOW:
1205                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1206                                     RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1207                 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1208                                   &rule->m_u.udp_ip4_spec, tab);
1209                 break;
1210         case SCTP_V4_FLOW:
1211                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1212                                     tab);
1213                 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1214                 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1215                                   (struct ethtool_tcpip4_spec *)&rule->m_u,
1216                                   tab);
1217                 break;
1218         case IP_USER_FLOW:
1219                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1220                                     tab);
1221                 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1222                                  (struct ethtool_usrip4_spec *) &rule->m_u,
1223                                  tab);
1224                 break;
1225         case ETHER_FLOW:
1226                 if (vlan)
1227                         gfar_set_parse_bits(vlan, vlan_mask, tab);
1228                 gfar_set_ether((struct ethhdr *) &rule->h_u,
1229                                (struct ethhdr *) &rule->m_u, tab);
1230                 break;
1231         default:
1232                 return -1;
1233         }
1234
1235         /* Set the vlan attributes in the end */
1236         if (vlan) {
1237                 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1238                 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1239         }
1240
1241         /* If there has been nothing written till now, it must be a default */
1242         if (tab->index == old_index) {
1243                 gfar_set_mask(0xFFFFFFFF, tab);
1244                 tab->fe[tab->index].ctrl = 0x20;
1245                 tab->fe[tab->index].prop = 0x0;
1246                 tab->index++;
1247         }
1248
1249         /* Remove last AND */
1250         tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1251
1252         /* Specify which queue to use or to drop */
1253         if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1254                 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1255         else
1256                 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1257
1258         /* Only big enough entries can be clustered */
1259         if (tab->index > (old_index + 2)) {
1260                 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1261                 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1262         }
1263
1264         /* In rare cases the cache can be full while there is
1265          * free space in hw
1266          */
1267         if (tab->index > MAX_FILER_CACHE_IDX - 1)
1268                 return -EBUSY;
1269
1270         return 0;
1271 }
1272
1273 /* Copy size filer entries */
1274 static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1275                                     struct gfar_filer_entry src[0], s32 size)
1276 {
1277         while (size > 0) {
1278                 size--;
1279                 dst[size].ctrl = src[size].ctrl;
1280                 dst[size].prop = src[size].prop;
1281         }
1282 }
1283
1284 /* Delete the contents of the filer-table between start and end
1285  * and collapse them
1286  */
1287 static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1288 {
1289         int length;
1290
1291         if (end > MAX_FILER_CACHE_IDX || end < begin)
1292                 return -EINVAL;
1293
1294         end++;
1295         length = end - begin;
1296
1297         /* Copy */
1298         while (end < tab->index) {
1299                 tab->fe[begin].ctrl = tab->fe[end].ctrl;
1300                 tab->fe[begin++].prop = tab->fe[end++].prop;
1301
1302         }
1303         /* Fill up with don't cares */
1304         while (begin < tab->index) {
1305                 tab->fe[begin].ctrl = 0x60;
1306                 tab->fe[begin].prop = 0xFFFFFFFF;
1307                 begin++;
1308         }
1309
1310         tab->index -= length;
1311         return 0;
1312 }
1313
1314 /* Make space on the wanted location */
1315 static int gfar_expand_filer_entries(u32 begin, u32 length,
1316                                      struct filer_table *tab)
1317 {
1318         if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
1319             begin > MAX_FILER_CACHE_IDX)
1320                 return -EINVAL;
1321
1322         gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1323                                 tab->index - length + 1);
1324
1325         tab->index += length;
1326         return 0;
1327 }
1328
1329 static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1330 {
1331         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1332              start++) {
1333                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1334                     (RQFCR_AND | RQFCR_CLE))
1335                         return start;
1336         }
1337         return -1;
1338 }
1339
1340 static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1341 {
1342         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1343              start++) {
1344                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1345                     (RQFCR_CLE))
1346                         return start;
1347         }
1348         return -1;
1349 }
1350
1351 /* Uses hardwares clustering option to reduce
1352  * the number of filer table entries
1353  */
1354 static void gfar_cluster_filer(struct filer_table *tab)
1355 {
1356         s32 i = -1, j, iend, jend;
1357
1358         while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1359                 j = i;
1360                 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1361                         /* The cluster entries self and the previous one
1362                          * (a mask) must be identical!
1363                          */
1364                         if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1365                                 break;
1366                         if (tab->fe[i].prop != tab->fe[j].prop)
1367                                 break;
1368                         if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1369                                 break;
1370                         if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1371                                 break;
1372                         iend = gfar_get_next_cluster_end(i, tab);
1373                         jend = gfar_get_next_cluster_end(j, tab);
1374                         if (jend == -1 || iend == -1)
1375                                 break;
1376
1377                         /* First we make some free space, where our cluster
1378                          * element should be. Then we copy it there and finally
1379                          * delete in from its old location.
1380                          */
1381                         if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
1382                             -EINVAL)
1383                                 break;
1384
1385                         gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1386                                                 &(tab->fe[jend + 1]), jend - j);
1387
1388                         if (gfar_trim_filer_entries(jend - 1,
1389                                                     jend + (jend - j),
1390                                                     tab) == -EINVAL)
1391                                 return;
1392
1393                         /* Mask out cluster bit */
1394                         tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1395                 }
1396         }
1397 }
1398
1399 /* Swaps the masked bits of a1<>a2 and b1<>b2 */
1400 static void gfar_swap_bits(struct gfar_filer_entry *a1,
1401                            struct gfar_filer_entry *a2,
1402                            struct gfar_filer_entry *b1,
1403                            struct gfar_filer_entry *b2, u32 mask)
1404 {
1405         u32 temp[4];
1406         temp[0] = a1->ctrl & mask;
1407         temp[1] = a2->ctrl & mask;
1408         temp[2] = b1->ctrl & mask;
1409         temp[3] = b2->ctrl & mask;
1410
1411         a1->ctrl &= ~mask;
1412         a2->ctrl &= ~mask;
1413         b1->ctrl &= ~mask;
1414         b2->ctrl &= ~mask;
1415
1416         a1->ctrl |= temp[1];
1417         a2->ctrl |= temp[0];
1418         b1->ctrl |= temp[3];
1419         b2->ctrl |= temp[2];
1420 }
1421
1422 /* Generate a list consisting of masks values with their start and
1423  * end of validity and block as indicator for parts belonging
1424  * together (glued by ANDs) in mask_table
1425  */
1426 static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1427                                     struct filer_table *tab)
1428 {
1429         u32 i, and_index = 0, block_index = 1;
1430
1431         for (i = 0; i < tab->index; i++) {
1432
1433                 /* LSByte of control = 0 sets a mask */
1434                 if (!(tab->fe[i].ctrl & 0xF)) {
1435                         mask_table[and_index].mask = tab->fe[i].prop;
1436                         mask_table[and_index].start = i;
1437                         mask_table[and_index].block = block_index;
1438                         if (and_index >= 1)
1439                                 mask_table[and_index - 1].end = i - 1;
1440                         and_index++;
1441                 }
1442                 /* cluster starts and ends will be separated because they should
1443                  * hold their position
1444                  */
1445                 if (tab->fe[i].ctrl & RQFCR_CLE)
1446                         block_index++;
1447                 /* A not set AND indicates the end of a depended block */
1448                 if (!(tab->fe[i].ctrl & RQFCR_AND))
1449                         block_index++;
1450         }
1451
1452         mask_table[and_index - 1].end = i - 1;
1453
1454         return and_index;
1455 }
1456
1457 /* Sorts the entries of mask_table by the values of the masks.
1458  * Important: The 0xFF80 flags of the first and last entry of a
1459  * block must hold their position (which queue, CLusterEnable, ReJEct,
1460  * AND)
1461  */
1462 static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1463                                  struct filer_table *temp_table, u32 and_index)
1464 {
1465         /* Pointer to compare function (_asc or _desc) */
1466         int (*gfar_comp)(const void *, const void *);
1467
1468         u32 i, size = 0, start = 0, prev = 1;
1469         u32 old_first, old_last, new_first, new_last;
1470
1471         gfar_comp = &gfar_comp_desc;
1472
1473         for (i = 0; i < and_index; i++) {
1474                 if (prev != mask_table[i].block) {
1475                         old_first = mask_table[start].start + 1;
1476                         old_last = mask_table[i - 1].end;
1477                         sort(mask_table + start, size,
1478                              sizeof(struct gfar_mask_entry),
1479                              gfar_comp, &gfar_swap);
1480
1481                         /* Toggle order for every block. This makes the
1482                          * thing more efficient!
1483                          */
1484                         if (gfar_comp == gfar_comp_desc)
1485                                 gfar_comp = &gfar_comp_asc;
1486                         else
1487                                 gfar_comp = &gfar_comp_desc;
1488
1489                         new_first = mask_table[start].start + 1;
1490                         new_last = mask_table[i - 1].end;
1491
1492                         gfar_swap_bits(&temp_table->fe[new_first],
1493                                        &temp_table->fe[old_first],
1494                                        &temp_table->fe[new_last],
1495                                        &temp_table->fe[old_last],
1496                                        RQFCR_QUEUE | RQFCR_CLE |
1497                                        RQFCR_RJE | RQFCR_AND);
1498
1499                         start = i;
1500                         size = 0;
1501                 }
1502                 size++;
1503                 prev = mask_table[i].block;
1504         }
1505 }
1506
1507 /* Reduces the number of masks needed in the filer table to save entries
1508  * This is done by sorting the masks of a depended block. A depended block is
1509  * identified by gluing ANDs or CLE. The sorting order toggles after every
1510  * block. Of course entries in scope of a mask must change their location with
1511  * it.
1512  */
1513 static int gfar_optimize_filer_masks(struct filer_table *tab)
1514 {
1515         struct filer_table *temp_table;
1516         struct gfar_mask_entry *mask_table;
1517
1518         u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1519         s32 ret = 0;
1520
1521         /* We need a copy of the filer table because
1522          * we want to change its order
1523          */
1524         temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1525         if (temp_table == NULL)
1526                 return -ENOMEM;
1527
1528         mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1529                              sizeof(struct gfar_mask_entry), GFP_KERNEL);
1530
1531         if (mask_table == NULL) {
1532                 ret = -ENOMEM;
1533                 goto end;
1534         }
1535
1536         and_index = gfar_generate_mask_table(mask_table, tab);
1537
1538         gfar_sort_mask_table(mask_table, temp_table, and_index);
1539
1540         /* Now we can copy the data from our duplicated filer table to
1541          * the real one in the order the mask table says
1542          */
1543         for (i = 0; i < and_index; i++) {
1544                 size = mask_table[i].end - mask_table[i].start + 1;
1545                 gfar_copy_filer_entries(&(tab->fe[j]),
1546                                 &(temp_table->fe[mask_table[i].start]), size);
1547                 j += size;
1548         }
1549
1550         /* And finally we just have to check for duplicated masks and drop the
1551          * second ones
1552          */
1553         for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1554                 if (tab->fe[i].ctrl == 0x80) {
1555                         previous_mask = i++;
1556                         break;
1557                 }
1558         }
1559         for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1560                 if (tab->fe[i].ctrl == 0x80) {
1561                         if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1562                                 /* Two identical ones found!
1563                                  * So drop the second one!
1564                                  */
1565                                 gfar_trim_filer_entries(i, i, tab);
1566                         } else
1567                                 /* Not identical! */
1568                                 previous_mask = i;
1569                 }
1570         }
1571
1572         kfree(mask_table);
1573 end:    kfree(temp_table);
1574         return ret;
1575 }
1576
1577 /* Write the bit-pattern from software's buffer to hardware registers */
1578 static int gfar_write_filer_table(struct gfar_private *priv,
1579                                   struct filer_table *tab)
1580 {
1581         u32 i = 0;
1582         if (tab->index > MAX_FILER_IDX - 1)
1583                 return -EBUSY;
1584
1585         /* Fill regular entries */
1586         for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1587                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1588         /* Fill the rest with fall-troughs */
1589         for (; i < MAX_FILER_IDX; i++)
1590                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1591         /* Last entry must be default accept
1592          * because that's what people expect
1593          */
1594         gfar_write_filer(priv, i, 0x20, 0x0);
1595
1596         return 0;
1597 }
1598
1599 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1600                                  struct gfar_private *priv)
1601 {
1602
1603         if (flow->flow_type & FLOW_EXT) {
1604                 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1605                         netdev_warn(priv->ndev,
1606                                     "User-specific data not supported!\n");
1607                 if (~flow->m_ext.vlan_etype)
1608                         netdev_warn(priv->ndev,
1609                                     "VLAN-etype not supported!\n");
1610         }
1611         if (flow->flow_type == IP_USER_FLOW)
1612                 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1613                         netdev_warn(priv->ndev,
1614                                     "IP-Version differing from IPv4 not supported!\n");
1615
1616         return 0;
1617 }
1618
1619 static int gfar_process_filer_changes(struct gfar_private *priv)
1620 {
1621         struct ethtool_flow_spec_container *j;
1622         struct filer_table *tab;
1623         s32 i = 0;
1624         s32 ret = 0;
1625
1626         /* So index is set to zero, too! */
1627         tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1628         if (tab == NULL)
1629                 return -ENOMEM;
1630
1631         /* Now convert the existing filer data from flow_spec into
1632          * filer tables binary format
1633          */
1634         list_for_each_entry(j, &priv->rx_list.list, list) {
1635                 ret = gfar_convert_to_filer(&j->fs, tab);
1636                 if (ret == -EBUSY) {
1637                         netdev_err(priv->ndev,
1638                                    "Rule not added: No free space!\n");
1639                         goto end;
1640                 }
1641                 if (ret == -1) {
1642                         netdev_err(priv->ndev,
1643                                    "Rule not added: Unsupported Flow-type!\n");
1644                         goto end;
1645                 }
1646         }
1647
1648         i = tab->index;
1649
1650         /* Optimizations to save entries */
1651         gfar_cluster_filer(tab);
1652         gfar_optimize_filer_masks(tab);
1653
1654         pr_debug("\tSummary:\n"
1655                  "\tData on hardware: %d\n"
1656                  "\tCompression rate: %d%%\n",
1657                  tab->index, 100 - (100 * tab->index) / i);
1658
1659         /* Write everything to hardware */
1660         ret = gfar_write_filer_table(priv, tab);
1661         if (ret == -EBUSY) {
1662                 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1663                 goto end;
1664         }
1665
1666 end:
1667         kfree(tab);
1668         return ret;
1669 }
1670
1671 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1672 {
1673         u32 i = 0;
1674
1675         for (i = 0; i < sizeof(flow->m_u); i++)
1676                 flow->m_u.hdata[i] ^= 0xFF;
1677
1678         flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1679         flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1680         flow->m_ext.data[0] ^= cpu_to_be32(~0);
1681         flow->m_ext.data[1] ^= cpu_to_be32(~0);
1682 }
1683
1684 static int gfar_add_cls(struct gfar_private *priv,
1685                         struct ethtool_rx_flow_spec *flow)
1686 {
1687         struct ethtool_flow_spec_container *temp, *comp;
1688         int ret = 0;
1689
1690         temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1691         if (temp == NULL)
1692                 return -ENOMEM;
1693         memcpy(&temp->fs, flow, sizeof(temp->fs));
1694
1695         gfar_invert_masks(&temp->fs);
1696         ret = gfar_check_capability(&temp->fs, priv);
1697         if (ret)
1698                 goto clean_mem;
1699         /* Link in the new element at the right @location */
1700         if (list_empty(&priv->rx_list.list)) {
1701                 ret = gfar_check_filer_hardware(priv);
1702                 if (ret != 0)
1703                         goto clean_mem;
1704                 list_add(&temp->list, &priv->rx_list.list);
1705                 goto process;
1706         } else {
1707                 list_for_each_entry(comp, &priv->rx_list.list, list) {
1708                         if (comp->fs.location > flow->location) {
1709                                 list_add_tail(&temp->list, &comp->list);
1710                                 goto process;
1711                         }
1712                         if (comp->fs.location == flow->location) {
1713                                 netdev_err(priv->ndev,
1714                                            "Rule not added: ID %d not free!\n",
1715                                            flow->location);
1716                                 ret = -EBUSY;
1717                                 goto clean_mem;
1718                         }
1719                 }
1720                 list_add_tail(&temp->list, &priv->rx_list.list);
1721         }
1722
1723 process:
1724         priv->rx_list.count++;
1725         ret = gfar_process_filer_changes(priv);
1726         if (ret)
1727                 goto clean_list;
1728         return ret;
1729
1730 clean_list:
1731         priv->rx_list.count--;
1732         list_del(&temp->list);
1733 clean_mem:
1734         kfree(temp);
1735         return ret;
1736 }
1737
1738 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1739 {
1740         struct ethtool_flow_spec_container *comp;
1741         u32 ret = -EINVAL;
1742
1743         if (list_empty(&priv->rx_list.list))
1744                 return ret;
1745
1746         list_for_each_entry(comp, &priv->rx_list.list, list) {
1747                 if (comp->fs.location == loc) {
1748                         list_del(&comp->list);
1749                         kfree(comp);
1750                         priv->rx_list.count--;
1751                         gfar_process_filer_changes(priv);
1752                         ret = 0;
1753                         break;
1754                 }
1755         }
1756
1757         return ret;
1758 }
1759
1760 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1761 {
1762         struct ethtool_flow_spec_container *comp;
1763         u32 ret = -EINVAL;
1764
1765         list_for_each_entry(comp, &priv->rx_list.list, list) {
1766                 if (comp->fs.location == cmd->fs.location) {
1767                         memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1768                         gfar_invert_masks(&cmd->fs);
1769                         ret = 0;
1770                         break;
1771                 }
1772         }
1773
1774         return ret;
1775 }
1776
1777 static int gfar_get_cls_all(struct gfar_private *priv,
1778                             struct ethtool_rxnfc *cmd, u32 *rule_locs)
1779 {
1780         struct ethtool_flow_spec_container *comp;
1781         u32 i = 0;
1782
1783         list_for_each_entry(comp, &priv->rx_list.list, list) {
1784                 if (i == cmd->rule_cnt)
1785                         return -EMSGSIZE;
1786                 rule_locs[i] = comp->fs.location;
1787                 i++;
1788         }
1789
1790         cmd->data = MAX_FILER_IDX;
1791         cmd->rule_cnt = i;
1792
1793         return 0;
1794 }
1795
1796 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1797 {
1798         struct gfar_private *priv = netdev_priv(dev);
1799         int ret = 0;
1800
1801         if (test_bit(GFAR_RESETTING, &priv->state))
1802                 return -EBUSY;
1803
1804         mutex_lock(&priv->rx_queue_access);
1805
1806         switch (cmd->cmd) {
1807         case ETHTOOL_SRXFH:
1808                 ret = gfar_set_hash_opts(priv, cmd);
1809                 break;
1810         case ETHTOOL_SRXCLSRLINS:
1811                 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1812                      cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1813                     cmd->fs.location >= MAX_FILER_IDX) {
1814                         ret = -EINVAL;
1815                         break;
1816                 }
1817                 ret = gfar_add_cls(priv, &cmd->fs);
1818                 break;
1819         case ETHTOOL_SRXCLSRLDEL:
1820                 ret = gfar_del_cls(priv, cmd->fs.location);
1821                 break;
1822         default:
1823                 ret = -EINVAL;
1824         }
1825
1826         mutex_unlock(&priv->rx_queue_access);
1827
1828         return ret;
1829 }
1830
1831 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1832                         u32 *rule_locs)
1833 {
1834         struct gfar_private *priv = netdev_priv(dev);
1835         int ret = 0;
1836
1837         switch (cmd->cmd) {
1838         case ETHTOOL_GRXRINGS:
1839                 cmd->data = priv->num_rx_queues;
1840                 break;
1841         case ETHTOOL_GRXCLSRLCNT:
1842                 cmd->rule_cnt = priv->rx_list.count;
1843                 break;
1844         case ETHTOOL_GRXCLSRULE:
1845                 ret = gfar_get_cls(priv, cmd);
1846                 break;
1847         case ETHTOOL_GRXCLSRLALL:
1848                 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1849                 break;
1850         default:
1851                 ret = -EINVAL;
1852                 break;
1853         }
1854
1855         return ret;
1856 }
1857
1858 int gfar_phc_index = -1;
1859 EXPORT_SYMBOL(gfar_phc_index);
1860
1861 static int gfar_get_ts_info(struct net_device *dev,
1862                             struct ethtool_ts_info *info)
1863 {
1864         struct gfar_private *priv = netdev_priv(dev);
1865
1866         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1867                 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1868                                         SOF_TIMESTAMPING_SOFTWARE;
1869                 info->phc_index = -1;
1870                 return 0;
1871         }
1872         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1873                                 SOF_TIMESTAMPING_RX_HARDWARE |
1874                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1875         info->phc_index = gfar_phc_index;
1876         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1877                          (1 << HWTSTAMP_TX_ON);
1878         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1879                            (1 << HWTSTAMP_FILTER_ALL);
1880         return 0;
1881 }
1882
1883 const struct ethtool_ops gfar_ethtool_ops = {
1884         .get_settings = gfar_gsettings,
1885         .set_settings = gfar_ssettings,
1886         .get_drvinfo = gfar_gdrvinfo,
1887         .get_regs_len = gfar_reglen,
1888         .get_regs = gfar_get_regs,
1889         .get_link = ethtool_op_get_link,
1890         .get_coalesce = gfar_gcoalesce,
1891         .set_coalesce = gfar_scoalesce,
1892         .get_ringparam = gfar_gringparam,
1893         .set_ringparam = gfar_sringparam,
1894         .get_pauseparam = gfar_gpauseparam,
1895         .set_pauseparam = gfar_spauseparam,
1896         .get_strings = gfar_gstrings,
1897         .get_sset_count = gfar_sset_count,
1898         .get_ethtool_stats = gfar_fill_stats,
1899         .get_msglevel = gfar_get_msglevel,
1900         .set_msglevel = gfar_set_msglevel,
1901 #ifdef CONFIG_PM
1902         .get_wol = gfar_get_wol,
1903         .set_wol = gfar_set_wol,
1904 #endif
1905         .set_rxnfc = gfar_set_nfc,
1906         .get_rxnfc = gfar_get_nfc,
1907         .get_ts_info = gfar_get_ts_info,
1908 };