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->supported & SUPPORTED_Pause) ||
 537             (!(phydev->supported & SUPPORTED_Asym_Pause) &&
 538              (epause->rx_pause != epause->tx_pause)))
 539                 return -EINVAL;
 540
 541         priv->rx_pause_en = priv->tx_pause_en = 0;
 542         if (epause->rx_pause) {
 543                 priv->rx_pause_en = 1;
 544
 545                 if (epause->tx_pause) {
 546                         priv->tx_pause_en = 1;
 547                         /* FLOW_CTRL_RX & TX */
 548                         newadv = ADVERTISED_Pause;
 549                 } else  /* FLOW_CTLR_RX */
 550                         newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
 551         } else if (epause->tx_pause) {
 552                 priv->tx_pause_en = 1;
 553                 /* FLOW_CTLR_TX */
 554                 newadv = ADVERTISED_Asym_Pause;
 555         } else
 556                 newadv = 0;
 557
 558         if (epause->autoneg)
 559                 priv->pause_aneg_en = 1;
 560         else
 561                 priv->pause_aneg_en = 0;
 562
 563         oldadv = phydev->advertising &
 564                 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 565         if (oldadv != newadv) {
 566                 phydev->advertising &=
 567                         ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 568                 phydev->advertising |= newadv;
 569                 if (phydev->autoneg)
 570                         /* inform link partner of our
 571                          * new flow ctrl settings
 572                          */
 573                         return phy_start_aneg(phydev);
 574
 575                 if (!epause->autoneg) {
 576                         u32 tempval;
 577                         tempval = gfar_read(&regs->maccfg1);
 578                         tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 579                         if (priv->tx_pause_en)
 580                                 tempval |= MACCFG1_TX_FLOW;
 581                         if (priv->rx_pause_en)
 582                                 tempval |= MACCFG1_RX_FLOW;
 583                         gfar_write(&regs->maccfg1, tempval);
 584                 }
 585         }
 586
 587         return 0;
 588 }
 589
 590 int gfar_set_features(struct net_device *dev, netdev_features_t features)
 591 {
 592         netdev_features_t changed = dev->features ^ features;
 593         struct gfar_private *priv = netdev_priv(dev);
 594         int err = 0;
 595
 596         if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 597                          NETIF_F_RXCSUM)))
 598                 return 0;
 599
 600         while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 601                 cpu_relax();
 602
 603         dev->features = features;
 604
 605         if (dev->flags & IFF_UP) {
 606                 /* Now we take down the rings to rebuild them */
 607                 stop_gfar(dev);
 608                 err = startup_gfar(dev);
 609         } else {
 610                 gfar_mac_reset(priv);
 611         }
 612
 613         clear_bit_unlock(GFAR_RESETTING, &priv->state);
 614
 615         return err;
 616 }
 617
 618 static uint32_t gfar_get_msglevel(struct net_device *dev)
 619 {
 620         struct gfar_private *priv = netdev_priv(dev);
 621
 622         return priv->msg_enable;
 623 }
 624
 625 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 626 {
 627         struct gfar_private *priv = netdev_priv(dev);
 628
 629         priv->msg_enable = data;
 630 }
 631
 632 #ifdef CONFIG_PM
 633 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 634 {
 635         struct gfar_private *priv = netdev_priv(dev);
 636
 637         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
 638                 wol->supported = WAKE_MAGIC;
 639                 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
 640         } else {
 641                 wol->supported = wol->wolopts = 0;
 642         }
 643 }
 644
 645 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 646 {
 647         struct gfar_private *priv = netdev_priv(dev);
 648         unsigned long flags;
 649
 650         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
 651             wol->wolopts != 0)
 652                 return -EINVAL;
 653
 654         if (wol->wolopts & ~WAKE_MAGIC)
 655                 return -EINVAL;
 656
 657         device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
 658
 659         spin_lock_irqsave(&priv->bflock, flags);
 660         priv->wol_en =  !!device_may_wakeup(&dev->dev);
 661         spin_unlock_irqrestore(&priv->bflock, flags);
 662
 663         return 0;
 664 }
 665 #endif
 666
 667 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 668 {
 669         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 670
 671         if (ethflow & RXH_L2DA) {
 672                 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
 673                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 674                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 675                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 676                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 677                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 678
 679                 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
 680                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 681                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 682                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 683                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 684                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 685         }
 686
 687         if (ethflow & RXH_VLAN) {
 688                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 689                       RQFCR_AND | RQFCR_HASHTBL_0;
 690                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 691                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 692                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 693                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 694         }
 695
 696         if (ethflow & RXH_IP_SRC) {
 697                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 698                       RQFCR_AND | RQFCR_HASHTBL_0;
 699                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 700                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 701                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 702                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 703         }
 704
 705         if (ethflow & (RXH_IP_DST)) {
 706                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 707                       RQFCR_AND | RQFCR_HASHTBL_0;
 708                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 709                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 710                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 711                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 712         }
 713
 714         if (ethflow & RXH_L3_PROTO) {
 715                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 716                       RQFCR_AND | RQFCR_HASHTBL_0;
 717                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 718                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 719                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 720                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 721         }
 722
 723         if (ethflow & RXH_L4_B_0_1) {
 724                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 725                       RQFCR_AND | RQFCR_HASHTBL_0;
 726                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 727                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 728                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 729                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 730         }
 731
 732         if (ethflow & RXH_L4_B_2_3) {
 733                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 734                       RQFCR_AND | RQFCR_HASHTBL_0;
 735                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 736                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 737                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 738                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 739         }
 740 }
 741
 742 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 743                                        u64 class)
 744 {
 745         unsigned int last_rule_idx = priv->cur_filer_idx;
 746         unsigned int cmp_rqfpr;
 747         unsigned int *local_rqfpr;
 748         unsigned int *local_rqfcr;
 749         int i = 0x0, k = 0x0;
 750         int j = MAX_FILER_IDX, l = 0x0;
 751         int ret = 1;
 752
 753         local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 754                                     GFP_KERNEL);
 755         local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 756                                     GFP_KERNEL);
 757         if (!local_rqfpr || !local_rqfcr) {
 758                 ret = 0;
 759                 goto err;
 760         }
 761
 762         switch (class) {
 763         case TCP_V4_FLOW:
 764                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 765                 break;
 766         case UDP_V4_FLOW:
 767                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 768                 break;
 769         case TCP_V6_FLOW:
 770                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 771                 break;
 772         case UDP_V6_FLOW:
 773                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 774                 break;
 775         default:
 776                 netdev_err(priv->ndev,
 777                            "Right now this class is not supported\n");
 778                 ret = 0;
 779                 goto err;
 780         }
 781
 782         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 783                 local_rqfpr[j] = priv->ftp_rqfpr[i];
 784                 local_rqfcr[j] = priv->ftp_rqfcr[i];
 785                 j--;
 786                 if ((priv->ftp_rqfcr[i] ==
 787                      (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 788                     (priv->ftp_rqfpr[i] == cmp_rqfpr))
 789                         break;
 790         }
 791
 792         if (i == MAX_FILER_IDX + 1) {
 793                 netdev_err(priv->ndev,
 794                            "No parse rule found, can't create hash rules\n");
 795                 ret = 0;
 796                 goto err;
 797         }
 798
 799         /* If a match was found, then it begins the starting of a cluster rule
 800          * if it was already programmed, we need to overwrite these rules
 801          */
 802         for (l = i+1; l < MAX_FILER_IDX; l++) {
 803                 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 804                     !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 805                         priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 806                                              RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 807                         priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 808                         gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 809                                          priv->ftp_rqfpr[l]);
 810                         break;
 811                 }
 812
 813                 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 814                         (priv->ftp_rqfcr[l] & RQFCR_AND))
 815                         continue;
 816                 else {
 817                         local_rqfpr[j] = priv->ftp_rqfpr[l];
 818                         local_rqfcr[j] = priv->ftp_rqfcr[l];
 819                         j--;
 820                 }
 821         }
 822
 823         priv->cur_filer_idx = l - 1;
 824         last_rule_idx = l;
 825
 826         /* hash rules */
 827         ethflow_to_filer_rules(priv, ethflow);
 828
 829         /* Write back the popped out rules again */
 830         for (k = j+1; k < MAX_FILER_IDX; k++) {
 831                 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 832                 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 833                 gfar_write_filer(priv, priv->cur_filer_idx,
 834                                  local_rqfcr[k], local_rqfpr[k]);
 835                 if (!priv->cur_filer_idx)
 836                         break;
 837                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 838         }
 839
 840 err:
 841         kfree(local_rqfcr);
 842         kfree(local_rqfpr);
 843         return ret;
 844 }
 845
 846 static int gfar_set_hash_opts(struct gfar_private *priv,
 847                               struct ethtool_rxnfc *cmd)
 848 {
 849         /* write the filer rules here */
 850         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 851                 return -EINVAL;
 852
 853         return 0;
 854 }
 855
 856 static int gfar_check_filer_hardware(struct gfar_private *priv)
 857 {
 858         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 859         u32 i;
 860
 861         /* Check if we are in FIFO mode */
 862         i = gfar_read(&regs->ecntrl);
 863         i &= ECNTRL_FIFM;
 864         if (i == ECNTRL_FIFM) {
 865                 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 866                 i = gfar_read(&regs->rctrl);
 867                 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 868                 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 869                         netdev_info(priv->ndev,
 870                                     "Receive Queue Filtering enabled\n");
 871                 } else {
 872                         netdev_warn(priv->ndev,
 873                                     "Receive Queue Filtering disabled\n");
 874                         return -EOPNOTSUPP;
 875                 }
 876         }
 877         /* Or in standard mode */
 878         else {
 879                 i = gfar_read(&regs->rctrl);
 880                 i &= RCTRL_PRSDEP_MASK;
 881                 if (i == RCTRL_PRSDEP_MASK) {
 882                         netdev_info(priv->ndev,
 883                                     "Receive Queue Filtering enabled\n");
 884                 } else {
 885                         netdev_warn(priv->ndev,
 886                                     "Receive Queue Filtering disabled\n");
 887                         return -EOPNOTSUPP;
 888                 }
 889         }
 890
 891         /* Sets the properties for arbitrary filer rule
 892          * to the first 4 Layer 4 Bytes
 893          */
 894         gfar_write(&regs->rbifx, 0xC0C1C2C3);
 895         return 0;
 896 }
 897
 898 static int gfar_comp_asc(const void *a, const void *b)
 899 {
 900         return memcmp(a, b, 4);
 901 }
 902
 903 static int gfar_comp_desc(const void *a, const void *b)
 904 {
 905         return -memcmp(a, b, 4);
 906 }
 907
 908 static void gfar_swap(void *a, void *b, int size)
 909 {
 910         u32 *_a = a;
 911         u32 *_b = b;
 912
 913         swap(_a[0], _b[0]);
 914         swap(_a[1], _b[1]);
 915         swap(_a[2], _b[2]);
 916         swap(_a[3], _b[3]);
 917 }
 918
 919 /* Write a mask to filer cache */
 920 static void gfar_set_mask(u32 mask, struct filer_table *tab)
 921 {
 922         tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 923         tab->fe[tab->index].prop = mask;
 924         tab->index++;
 925 }
 926
 927 /* Sets parse bits (e.g. IP or TCP) */
 928 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 929 {
 930         gfar_set_mask(mask, tab);
 931         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 932                                    RQFCR_AND;
 933         tab->fe[tab->index].prop = value;
 934         tab->index++;
 935 }
 936
 937 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 938                                        struct filer_table *tab)
 939 {
 940         gfar_set_mask(mask, tab);
 941         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 942         tab->fe[tab->index].prop = value;
 943         tab->index++;
 944 }
 945
 946 /* For setting a tuple of value and mask of type flag
 947  * Example:
 948  * IP-Src = 10.0.0.0/255.0.0.0
 949  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 950  *
 951  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 952  * For a don't care mask it gives us a 0
 953  *
 954  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 955  * and MAC stuff on an upper level (due to missing information on this level).
 956  * For these guys we can discard them if they are value=0 and mask=0.
 957  *
 958  * Further the all masks are one-padded for better hardware efficiency.
 959  */
 960 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 961                                struct filer_table *tab)
 962 {
 963         switch (flag) {
 964                 /* 3bit */
 965         case RQFCR_PID_PRI:
 966                 if (!(value | mask))
 967                         return;
 968                 mask |= RQFCR_PID_PRI_MASK;
 969                 break;
 970                 /* 8bit */
 971         case RQFCR_PID_L4P:
 972         case RQFCR_PID_TOS:
 973                 if (!~(mask | RQFCR_PID_L4P_MASK))
 974                         return;
 975                 if (!mask)
 976                         mask = ~0;
 977                 else
 978                         mask |= RQFCR_PID_L4P_MASK;
 979                 break;
 980                 /* 12bit */
 981         case RQFCR_PID_VID:
 982                 if (!(value | mask))
 983                         return;
 984                 mask |= RQFCR_PID_VID_MASK;
 985                 break;
 986                 /* 16bit */
 987         case RQFCR_PID_DPT:
 988         case RQFCR_PID_SPT:
 989         case RQFCR_PID_ETY:
 990                 if (!~(mask | RQFCR_PID_PORT_MASK))
 991                         return;
 992                 if (!mask)
 993                         mask = ~0;
 994                 else
 995                         mask |= RQFCR_PID_PORT_MASK;
 996                 break;
 997                 /* 24bit */
 998         case RQFCR_PID_DAH:
 999         case RQFCR_PID_DAL:
1000         case RQFCR_PID_SAH:
1001         case RQFCR_PID_SAL:
1002                 if (!(value | mask))
1003                         return;
1004                 mask |= RQFCR_PID_MAC_MASK;
1005                 break;
1006                 /* for all real 32bit masks */
1007         default:
1008                 if (!~mask)
1009                         return;
1010                 if (!mask)
1011                         mask = ~0;
1012                 break;
1013         }
1014         gfar_set_general_attribute(value, mask, flag, tab);
1015 }
1016
1017 /* Translates value and mask for UDP, TCP or SCTP */
1018 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
1019                               struct ethtool_tcpip4_spec *mask,
1020                               struct filer_table *tab)
1021 {
1022         gfar_set_attribute(be32_to_cpu(value->ip4src),
1023                            be32_to_cpu(mask->ip4src),
1024                            RQFCR_PID_SIA, tab);
1025         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1026                            be32_to_cpu(mask->ip4dst),
1027                            RQFCR_PID_DIA, tab);
1028         gfar_set_attribute(be16_to_cpu(value->pdst),
1029                            be16_to_cpu(mask->pdst),
1030                            RQFCR_PID_DPT, tab);
1031         gfar_set_attribute(be16_to_cpu(value->psrc),
1032                            be16_to_cpu(mask->psrc),
1033                            RQFCR_PID_SPT, tab);
1034         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1035 }
1036
1037 /* Translates value and mask for RAW-IP4 */
1038 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1039                              struct ethtool_usrip4_spec *mask,
1040                              struct filer_table *tab)
1041 {
1042         gfar_set_attribute(be32_to_cpu(value->ip4src),
1043                            be32_to_cpu(mask->ip4src),
1044                            RQFCR_PID_SIA, tab);
1045         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1046                            be32_to_cpu(mask->ip4dst),
1047                            RQFCR_PID_DIA, tab);
1048         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1049         gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1050         gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1051                            be32_to_cpu(mask->l4_4_bytes),
1052                            RQFCR_PID_ARB, tab);
1053
1054 }
1055
1056 /* Translates value and mask for ETHER spec */
1057 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1058                            struct filer_table *tab)
1059 {
1060         u32 upper_temp_mask = 0;
1061         u32 lower_temp_mask = 0;
1062
1063         /* Source address */
1064         if (!is_broadcast_ether_addr(mask->h_source)) {
1065                 if (is_zero_ether_addr(mask->h_source)) {
1066                         upper_temp_mask = 0xFFFFFFFF;
1067                         lower_temp_mask = 0xFFFFFFFF;
1068                 } else {
1069                         upper_temp_mask = mask->h_source[0] << 16 |
1070                                           mask->h_source[1] << 8  |
1071                                           mask->h_source[2];
1072                         lower_temp_mask = mask->h_source[3] << 16 |
1073                                           mask->h_source[4] << 8  |
1074                                           mask->h_source[5];
1075                 }
1076                 /* Upper 24bit */
1077                 gfar_set_attribute(value->h_source[0] << 16 |
1078                                    value->h_source[1] << 8  |
1079                                    value->h_source[2],
1080                                    upper_temp_mask, RQFCR_PID_SAH, tab);
1081                 /* And the same for the lower part */
1082                 gfar_set_attribute(value->h_source[3] << 16 |
1083                                    value->h_source[4] << 8  |
1084                                    value->h_source[5],
1085                                    lower_temp_mask, RQFCR_PID_SAL, tab);
1086         }
1087         /* Destination address */
1088         if (!is_broadcast_ether_addr(mask->h_dest)) {
1089                 /* Special for destination is limited broadcast */
1090                 if ((is_broadcast_ether_addr(value->h_dest) &&
1091                     is_zero_ether_addr(mask->h_dest))) {
1092                         gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1093                 } else {
1094                         if (is_zero_ether_addr(mask->h_dest)) {
1095                                 upper_temp_mask = 0xFFFFFFFF;
1096                                 lower_temp_mask = 0xFFFFFFFF;
1097                         } else {
1098                                 upper_temp_mask = mask->h_dest[0] << 16 |
1099                                                   mask->h_dest[1] << 8  |
1100                                                   mask->h_dest[2];
1101                                 lower_temp_mask = mask->h_dest[3] << 16 |
1102                                                   mask->h_dest[4] << 8  |
1103                                                   mask->h_dest[5];
1104                         }
1105
1106                         /* Upper 24bit */
1107                         gfar_set_attribute(value->h_dest[0] << 16 |
1108                                            value->h_dest[1] << 8  |
1109                                            value->h_dest[2],
1110                                            upper_temp_mask, RQFCR_PID_DAH, tab);
1111                         /* And the same for the lower part */
1112                         gfar_set_attribute(value->h_dest[3] << 16 |
1113                                            value->h_dest[4] << 8  |
1114                                            value->h_dest[5],
1115                                            lower_temp_mask, RQFCR_PID_DAL, tab);
1116                 }
1117         }
1118
1119         gfar_set_attribute(be16_to_cpu(value->h_proto),
1120                            be16_to_cpu(mask->h_proto),
1121                            RQFCR_PID_ETY, tab);
1122 }
1123
1124 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1125 {
1126         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1127 }
1128
1129 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1130 {
1131         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1132 }
1133
1134 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1135 {
1136         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1137 }
1138
1139 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1140 {
1141         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1142 }
1143
1144 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1145 {
1146         return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1147                 VLAN_PRIO_SHIFT;
1148 }
1149
1150 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1151 {
1152         return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1153                 VLAN_PRIO_SHIFT;
1154 }
1155
1156 /* Convert a rule to binary filter format of gianfar */
1157 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1158                                  struct filer_table *tab)
1159 {
1160         u32 vlan = 0, vlan_mask = 0;
1161         u32 id = 0, id_mask = 0;
1162         u32 cfi = 0, cfi_mask = 0;
1163         u32 prio = 0, prio_mask = 0;
1164         u32 old_index = tab->index;
1165
1166         /* Check if vlan is wanted */
1167         if ((rule->flow_type & FLOW_EXT) &&
1168             (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1169                 if (!rule->m_ext.vlan_tci)
1170                         rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1171
1172                 vlan = RQFPR_VLN;
1173                 vlan_mask = RQFPR_VLN;
1174
1175                 /* Separate the fields */
1176                 id = vlan_tci_vid(rule);
1177                 id_mask = vlan_tci_vidm(rule);
1178                 cfi = vlan_tci_cfi(rule);
1179                 cfi_mask = vlan_tci_cfim(rule);
1180                 prio = vlan_tci_prio(rule);
1181                 prio_mask = vlan_tci_priom(rule);
1182
1183                 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1184                         vlan |= RQFPR_CFI;
1185                         vlan_mask |= RQFPR_CFI;
1186                 } else if (cfi != VLAN_TAG_PRESENT &&
1187                            cfi_mask == VLAN_TAG_PRESENT) {
1188                         vlan_mask |= RQFPR_CFI;
1189                 }
1190         }
1191
1192         switch (rule->flow_type & ~FLOW_EXT) {
1193         case TCP_V4_FLOW:
1194                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1195                                     RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1196                 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1197                                   &rule->m_u.tcp_ip4_spec, tab);
1198                 break;
1199         case UDP_V4_FLOW:
1200                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1201                                     RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1202                 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1203                                   &rule->m_u.udp_ip4_spec, tab);
1204                 break;
1205         case SCTP_V4_FLOW:
1206                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1207                                     tab);
1208                 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1209                 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1210                                   (struct ethtool_tcpip4_spec *)&rule->m_u,
1211                                   tab);
1212                 break;
1213         case IP_USER_FLOW:
1214                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1215                                     tab);
1216                 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1217                                  (struct ethtool_usrip4_spec *) &rule->m_u,
1218                                  tab);
1219                 break;
1220         case ETHER_FLOW:
1221                 if (vlan)
1222                         gfar_set_parse_bits(vlan, vlan_mask, tab);
1223                 gfar_set_ether((struct ethhdr *) &rule->h_u,
1224                                (struct ethhdr *) &rule->m_u, tab);
1225                 break;
1226         default:
1227                 return -1;
1228         }
1229
1230         /* Set the vlan attributes in the end */
1231         if (vlan) {
1232                 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1233                 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1234         }
1235
1236         /* If there has been nothing written till now, it must be a default */
1237         if (tab->index == old_index) {
1238                 gfar_set_mask(0xFFFFFFFF, tab);
1239                 tab->fe[tab->index].ctrl = 0x20;
1240                 tab->fe[tab->index].prop = 0x0;
1241                 tab->index++;
1242         }
1243
1244         /* Remove last AND */
1245         tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1246
1247         /* Specify which queue to use or to drop */
1248         if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1249                 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1250         else
1251                 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1252
1253         /* Only big enough entries can be clustered */
1254         if (tab->index > (old_index + 2)) {
1255                 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1256                 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1257         }
1258
1259         /* In rare cases the cache can be full while there is
1260          * free space in hw
1261          */
1262         if (tab->index > MAX_FILER_CACHE_IDX - 1)
1263                 return -EBUSY;
1264
1265         return 0;
1266 }
1267
1268 /* Copy size filer entries */
1269 static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1270                                     struct gfar_filer_entry src[0], s32 size)
1271 {
1272         while (size > 0) {
1273                 size--;
1274                 dst[size].ctrl = src[size].ctrl;
1275                 dst[size].prop = src[size].prop;
1276         }
1277 }
1278
1279 /* Delete the contents of the filer-table between start and end
1280  * and collapse them
1281  */
1282 static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1283 {
1284         int length;
1285
1286         if (end > MAX_FILER_CACHE_IDX || end < begin)
1287                 return -EINVAL;
1288
1289         end++;
1290         length = end - begin;
1291
1292         /* Copy */
1293         while (end < tab->index) {
1294                 tab->fe[begin].ctrl = tab->fe[end].ctrl;
1295                 tab->fe[begin++].prop = tab->fe[end++].prop;
1296
1297         }
1298         /* Fill up with don't cares */
1299         while (begin < tab->index) {
1300                 tab->fe[begin].ctrl = 0x60;
1301                 tab->fe[begin].prop = 0xFFFFFFFF;
1302                 begin++;
1303         }
1304
1305         tab->index -= length;
1306         return 0;
1307 }
1308
1309 /* Make space on the wanted location */
1310 static int gfar_expand_filer_entries(u32 begin, u32 length,
1311                                      struct filer_table *tab)
1312 {
1313         if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
1314             begin > MAX_FILER_CACHE_IDX)
1315                 return -EINVAL;
1316
1317         gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1318                                 tab->index - length + 1);
1319
1320         tab->index += length;
1321         return 0;
1322 }
1323
1324 static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1325 {
1326         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1327              start++) {
1328                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1329                     (RQFCR_AND | RQFCR_CLE))
1330                         return start;
1331         }
1332         return -1;
1333 }
1334
1335 static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1336 {
1337         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1338              start++) {
1339                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1340                     (RQFCR_CLE))
1341                         return start;
1342         }
1343         return -1;
1344 }
1345
1346 /* Uses hardwares clustering option to reduce
1347  * the number of filer table entries
1348  */
1349 static void gfar_cluster_filer(struct filer_table *tab)
1350 {
1351         s32 i = -1, j, iend, jend;
1352
1353         while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1354                 j = i;
1355                 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1356                         /* The cluster entries self and the previous one
1357                          * (a mask) must be identical!
1358                          */
1359                         if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1360                                 break;
1361                         if (tab->fe[i].prop != tab->fe[j].prop)
1362                                 break;
1363                         if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1364                                 break;
1365                         if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1366                                 break;
1367                         iend = gfar_get_next_cluster_end(i, tab);
1368                         jend = gfar_get_next_cluster_end(j, tab);
1369                         if (jend == -1 || iend == -1)
1370                                 break;
1371
1372                         /* First we make some free space, where our cluster
1373                          * element should be. Then we copy it there and finally
1374                          * delete in from its old location.
1375                          */
1376                         if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
1377                             -EINVAL)
1378                                 break;
1379
1380                         gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1381                                                 &(tab->fe[jend + 1]), jend - j);
1382
1383                         if (gfar_trim_filer_entries(jend - 1,
1384                                                     jend + (jend - j),
1385                                                     tab) == -EINVAL)
1386                                 return;
1387
1388                         /* Mask out cluster bit */
1389                         tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1390                 }
1391         }
1392 }
1393
1394 /* Swaps the masked bits of a1<>a2 and b1<>b2 */
1395 static void gfar_swap_bits(struct gfar_filer_entry *a1,
1396                            struct gfar_filer_entry *a2,
1397                            struct gfar_filer_entry *b1,
1398                            struct gfar_filer_entry *b2, u32 mask)
1399 {
1400         u32 temp[4];
1401         temp[0] = a1->ctrl & mask;
1402         temp[1] = a2->ctrl & mask;
1403         temp[2] = b1->ctrl & mask;
1404         temp[3] = b2->ctrl & mask;
1405
1406         a1->ctrl &= ~mask;
1407         a2->ctrl &= ~mask;
1408         b1->ctrl &= ~mask;
1409         b2->ctrl &= ~mask;
1410
1411         a1->ctrl |= temp[1];
1412         a2->ctrl |= temp[0];
1413         b1->ctrl |= temp[3];
1414         b2->ctrl |= temp[2];
1415 }
1416
1417 /* Generate a list consisting of masks values with their start and
1418  * end of validity and block as indicator for parts belonging
1419  * together (glued by ANDs) in mask_table
1420  */
1421 static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1422                                     struct filer_table *tab)
1423 {
1424         u32 i, and_index = 0, block_index = 1;
1425
1426         for (i = 0; i < tab->index; i++) {
1427
1428                 /* LSByte of control = 0 sets a mask */
1429                 if (!(tab->fe[i].ctrl & 0xF)) {
1430                         mask_table[and_index].mask = tab->fe[i].prop;
1431                         mask_table[and_index].start = i;
1432                         mask_table[and_index].block = block_index;
1433                         if (and_index >= 1)
1434                                 mask_table[and_index - 1].end = i - 1;
1435                         and_index++;
1436                 }
1437                 /* cluster starts and ends will be separated because they should
1438                  * hold their position
1439                  */
1440                 if (tab->fe[i].ctrl & RQFCR_CLE)
1441                         block_index++;
1442                 /* A not set AND indicates the end of a depended block */
1443                 if (!(tab->fe[i].ctrl & RQFCR_AND))
1444                         block_index++;
1445         }
1446
1447         mask_table[and_index - 1].end = i - 1;
1448
1449         return and_index;
1450 }
1451
1452 /* Sorts the entries of mask_table by the values of the masks.
1453  * Important: The 0xFF80 flags of the first and last entry of a
1454  * block must hold their position (which queue, CLusterEnable, ReJEct,
1455  * AND)
1456  */
1457 static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1458                                  struct filer_table *temp_table, u32 and_index)
1459 {
1460         /* Pointer to compare function (_asc or _desc) */
1461         int (*gfar_comp)(const void *, const void *);
1462
1463         u32 i, size = 0, start = 0, prev = 1;
1464         u32 old_first, old_last, new_first, new_last;
1465
1466         gfar_comp = &gfar_comp_desc;
1467
1468         for (i = 0; i < and_index; i++) {
1469                 if (prev != mask_table[i].block) {
1470                         old_first = mask_table[start].start + 1;
1471                         old_last = mask_table[i - 1].end;
1472                         sort(mask_table + start, size,
1473                              sizeof(struct gfar_mask_entry),
1474                              gfar_comp, &gfar_swap);
1475
1476                         /* Toggle order for every block. This makes the
1477                          * thing more efficient!
1478                          */
1479                         if (gfar_comp == gfar_comp_desc)
1480                                 gfar_comp = &gfar_comp_asc;
1481                         else
1482                                 gfar_comp = &gfar_comp_desc;
1483
1484                         new_first = mask_table[start].start + 1;
1485                         new_last = mask_table[i - 1].end;
1486
1487                         gfar_swap_bits(&temp_table->fe[new_first],
1488                                        &temp_table->fe[old_first],
1489                                        &temp_table->fe[new_last],
1490                                        &temp_table->fe[old_last],
1491                                        RQFCR_QUEUE | RQFCR_CLE |
1492                                        RQFCR_RJE | RQFCR_AND);
1493
1494                         start = i;
1495                         size = 0;
1496                 }
1497                 size++;
1498                 prev = mask_table[i].block;
1499         }
1500 }
1501
1502 /* Reduces the number of masks needed in the filer table to save entries
1503  * This is done by sorting the masks of a depended block. A depended block is
1504  * identified by gluing ANDs or CLE. The sorting order toggles after every
1505  * block. Of course entries in scope of a mask must change their location with
1506  * it.
1507  */
1508 static int gfar_optimize_filer_masks(struct filer_table *tab)
1509 {
1510         struct filer_table *temp_table;
1511         struct gfar_mask_entry *mask_table;
1512
1513         u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1514         s32 ret = 0;
1515
1516         /* We need a copy of the filer table because
1517          * we want to change its order
1518          */
1519         temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1520         if (temp_table == NULL)
1521                 return -ENOMEM;
1522
1523         mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1524                              sizeof(struct gfar_mask_entry), GFP_KERNEL);
1525
1526         if (mask_table == NULL) {
1527                 ret = -ENOMEM;
1528                 goto end;
1529         }
1530
1531         and_index = gfar_generate_mask_table(mask_table, tab);
1532
1533         gfar_sort_mask_table(mask_table, temp_table, and_index);
1534
1535         /* Now we can copy the data from our duplicated filer table to
1536          * the real one in the order the mask table says
1537          */
1538         for (i = 0; i < and_index; i++) {
1539                 size = mask_table[i].end - mask_table[i].start + 1;
1540                 gfar_copy_filer_entries(&(tab->fe[j]),
1541                                 &(temp_table->fe[mask_table[i].start]), size);
1542                 j += size;
1543         }
1544
1545         /* And finally we just have to check for duplicated masks and drop the
1546          * second ones
1547          */
1548         for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1549                 if (tab->fe[i].ctrl == 0x80) {
1550                         previous_mask = i++;
1551                         break;
1552                 }
1553         }
1554         for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1555                 if (tab->fe[i].ctrl == 0x80) {
1556                         if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1557                                 /* Two identical ones found!
1558                                  * So drop the second one!
1559                                  */
1560                                 gfar_trim_filer_entries(i, i, tab);
1561                         } else
1562                                 /* Not identical! */
1563                                 previous_mask = i;
1564                 }
1565         }
1566
1567         kfree(mask_table);
1568 end:    kfree(temp_table);
1569         return ret;
1570 }
1571
1572 /* Write the bit-pattern from software's buffer to hardware registers */
1573 static int gfar_write_filer_table(struct gfar_private *priv,
1574                                   struct filer_table *tab)
1575 {
1576         u32 i = 0;
1577         if (tab->index > MAX_FILER_IDX - 1)
1578                 return -EBUSY;
1579
1580         /* Fill regular entries */
1581         for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl);
1582              i++)
1583                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1584         /* Fill the rest with fall-troughs */
1585         for (; i < MAX_FILER_IDX - 1; i++)
1586                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1587         /* Last entry must be default accept
1588          * because that's what people expect
1589          */
1590         gfar_write_filer(priv, i, 0x20, 0x0);
1591
1592         return 0;
1593 }
1594
1595 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1596                                  struct gfar_private *priv)
1597 {
1598
1599         if (flow->flow_type & FLOW_EXT) {
1600                 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1601                         netdev_warn(priv->ndev,
1602                                     "User-specific data not supported!\n");
1603                 if (~flow->m_ext.vlan_etype)
1604                         netdev_warn(priv->ndev,
1605                                     "VLAN-etype not supported!\n");
1606         }
1607         if (flow->flow_type == IP_USER_FLOW)
1608                 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1609                         netdev_warn(priv->ndev,
1610                                     "IP-Version differing from IPv4 not supported!\n");
1611
1612         return 0;
1613 }
1614
1615 static int gfar_process_filer_changes(struct gfar_private *priv)
1616 {
1617         struct ethtool_flow_spec_container *j;
1618         struct filer_table *tab;
1619         s32 i = 0;
1620         s32 ret = 0;
1621
1622         /* So index is set to zero, too! */
1623         tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1624         if (tab == NULL)
1625                 return -ENOMEM;
1626
1627         /* Now convert the existing filer data from flow_spec into
1628          * filer tables binary format
1629          */
1630         list_for_each_entry(j, &priv->rx_list.list, list) {
1631                 ret = gfar_convert_to_filer(&j->fs, tab);
1632                 if (ret == -EBUSY) {
1633                         netdev_err(priv->ndev,
1634                                    "Rule not added: No free space!\n");
1635                         goto end;
1636                 }
1637                 if (ret == -1) {
1638                         netdev_err(priv->ndev,
1639                                    "Rule not added: Unsupported Flow-type!\n");
1640                         goto end;
1641                 }
1642         }
1643
1644         i = tab->index;
1645
1646         /* Optimizations to save entries */
1647         gfar_cluster_filer(tab);
1648         gfar_optimize_filer_masks(tab);
1649
1650         pr_debug("\tSummary:\n"
1651                  "\tData on hardware: %d\n"
1652                  "\tCompression rate: %d%%\n",
1653                  tab->index, 100 - (100 * tab->index) / i);
1654
1655         /* Write everything to hardware */
1656         ret = gfar_write_filer_table(priv, tab);
1657         if (ret == -EBUSY) {
1658                 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1659                 goto end;
1660         }
1661
1662 end:
1663         kfree(tab);
1664         return ret;
1665 }
1666
1667 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1668 {
1669         u32 i = 0;
1670
1671         for (i = 0; i < sizeof(flow->m_u); i++)
1672                 flow->m_u.hdata[i] ^= 0xFF;
1673
1674         flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1675         flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1676         flow->m_ext.data[0] ^= cpu_to_be32(~0);
1677         flow->m_ext.data[1] ^= cpu_to_be32(~0);
1678 }
1679
1680 static int gfar_add_cls(struct gfar_private *priv,
1681                         struct ethtool_rx_flow_spec *flow)
1682 {
1683         struct ethtool_flow_spec_container *temp, *comp;
1684         int ret = 0;
1685
1686         temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1687         if (temp == NULL)
1688                 return -ENOMEM;
1689         memcpy(&temp->fs, flow, sizeof(temp->fs));
1690
1691         gfar_invert_masks(&temp->fs);
1692         ret = gfar_check_capability(&temp->fs, priv);
1693         if (ret)
1694                 goto clean_mem;
1695         /* Link in the new element at the right @location */
1696         if (list_empty(&priv->rx_list.list)) {
1697                 ret = gfar_check_filer_hardware(priv);
1698                 if (ret != 0)
1699                         goto clean_mem;
1700                 list_add(&temp->list, &priv->rx_list.list);
1701                 goto process;
1702         } else {
1703                 list_for_each_entry(comp, &priv->rx_list.list, list) {
1704                         if (comp->fs.location > flow->location) {
1705                                 list_add_tail(&temp->list, &comp->list);
1706                                 goto process;
1707                         }
1708                         if (comp->fs.location == flow->location) {
1709                                 netdev_err(priv->ndev,
1710                                            "Rule not added: ID %d not free!\n",
1711                                            flow->location);
1712                                 ret = -EBUSY;
1713                                 goto clean_mem;
1714                         }
1715                 }
1716                 list_add_tail(&temp->list, &priv->rx_list.list);
1717         }
1718
1719 process:
1720         ret = gfar_process_filer_changes(priv);
1721         if (ret)
1722                 goto clean_list;
1723         priv->rx_list.count++;
1724         return ret;
1725
1726 clean_list:
1727         list_del(&temp->list);
1728 clean_mem:
1729         kfree(temp);
1730         return ret;
1731 }
1732
1733 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1734 {
1735         struct ethtool_flow_spec_container *comp;
1736         u32 ret = -EINVAL;
1737
1738         if (list_empty(&priv->rx_list.list))
1739                 return ret;
1740
1741         list_for_each_entry(comp, &priv->rx_list.list, list) {
1742                 if (comp->fs.location == loc) {
1743                         list_del(&comp->list);
1744                         kfree(comp);
1745                         priv->rx_list.count--;
1746                         gfar_process_filer_changes(priv);
1747                         ret = 0;
1748                         break;
1749                 }
1750         }
1751
1752         return ret;
1753 }
1754
1755 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1756 {
1757         struct ethtool_flow_spec_container *comp;
1758         u32 ret = -EINVAL;
1759
1760         list_for_each_entry(comp, &priv->rx_list.list, list) {
1761                 if (comp->fs.location == cmd->fs.location) {
1762                         memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1763                         gfar_invert_masks(&cmd->fs);
1764                         ret = 0;
1765                         break;
1766                 }
1767         }
1768
1769         return ret;
1770 }
1771
1772 static int gfar_get_cls_all(struct gfar_private *priv,
1773                             struct ethtool_rxnfc *cmd, u32 *rule_locs)
1774 {
1775         struct ethtool_flow_spec_container *comp;
1776         u32 i = 0;
1777
1778         list_for_each_entry(comp, &priv->rx_list.list, list) {
1779                 if (i == cmd->rule_cnt)
1780                         return -EMSGSIZE;
1781                 rule_locs[i] = comp->fs.location;
1782                 i++;
1783         }
1784
1785         cmd->data = MAX_FILER_IDX;
1786         cmd->rule_cnt = i;
1787
1788         return 0;
1789 }
1790
1791 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1792 {
1793         struct gfar_private *priv = netdev_priv(dev);
1794         int ret = 0;
1795
1796         if (test_bit(GFAR_RESETTING, &priv->state))
1797                 return -EBUSY;
1798
1799         mutex_lock(&priv->rx_queue_access);
1800
1801         switch (cmd->cmd) {
1802         case ETHTOOL_SRXFH:
1803                 ret = gfar_set_hash_opts(priv, cmd);
1804                 break;
1805         case ETHTOOL_SRXCLSRLINS:
1806                 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1807                      cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1808                     cmd->fs.location >= MAX_FILER_IDX) {
1809                         ret = -EINVAL;
1810                         break;
1811                 }
1812                 ret = gfar_add_cls(priv, &cmd->fs);
1813                 break;
1814         case ETHTOOL_SRXCLSRLDEL:
1815                 ret = gfar_del_cls(priv, cmd->fs.location);
1816                 break;
1817         default:
1818                 ret = -EINVAL;
1819         }
1820
1821         mutex_unlock(&priv->rx_queue_access);
1822
1823         return ret;
1824 }
1825
1826 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1827                         u32 *rule_locs)
1828 {
1829         struct gfar_private *priv = netdev_priv(dev);
1830         int ret = 0;
1831
1832         switch (cmd->cmd) {
1833         case ETHTOOL_GRXRINGS:
1834                 cmd->data = priv->num_rx_queues;
1835                 break;
1836         case ETHTOOL_GRXCLSRLCNT:
1837                 cmd->rule_cnt = priv->rx_list.count;
1838                 break;
1839         case ETHTOOL_GRXCLSRULE:
1840                 ret = gfar_get_cls(priv, cmd);
1841                 break;
1842         case ETHTOOL_GRXCLSRLALL:
1843                 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1844                 break;
1845         default:
1846                 ret = -EINVAL;
1847                 break;
1848         }
1849
1850         return ret;
1851 }
1852
1853 int gfar_phc_index = -1;
1854 EXPORT_SYMBOL(gfar_phc_index);
1855
1856 static int gfar_get_ts_info(struct net_device *dev,
1857                             struct ethtool_ts_info *info)
1858 {
1859         struct gfar_private *priv = netdev_priv(dev);
1860
1861         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1862                 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1863                                         SOF_TIMESTAMPING_SOFTWARE;
1864                 info->phc_index = -1;
1865                 return 0;
1866         }
1867         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1868                                 SOF_TIMESTAMPING_RX_HARDWARE |
1869                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1870         info->phc_index = gfar_phc_index;
1871         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1872                          (1 << HWTSTAMP_TX_ON);
1873         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1874                            (1 << HWTSTAMP_FILTER_ALL);
1875         return 0;
1876 }
1877
1878 const struct ethtool_ops gfar_ethtool_ops = {
1879         .get_settings = gfar_gsettings,
1880         .set_settings = gfar_ssettings,
1881         .get_drvinfo = gfar_gdrvinfo,
1882         .get_regs_len = gfar_reglen,
1883         .get_regs = gfar_get_regs,
1884         .get_link = ethtool_op_get_link,
1885         .get_coalesce = gfar_gcoalesce,
1886         .set_coalesce = gfar_scoalesce,
1887         .get_ringparam = gfar_gringparam,
1888         .set_ringparam = gfar_sringparam,
1889         .get_pauseparam = gfar_gpauseparam,
1890         .set_pauseparam = gfar_spauseparam,
1891         .get_strings = gfar_gstrings,
1892         .get_sset_count = gfar_sset_count,
1893         .get_ethtool_stats = gfar_fill_stats,
1894         .get_msglevel = gfar_get_msglevel,
1895         .set_msglevel = gfar_set_msglevel,
1896 #ifdef CONFIG_PM
1897         .get_wol = gfar_get_wol,
1898         .set_wol = gfar_set_wol,
1899 #endif
1900         .set_rxnfc = gfar_set_nfc,
1901         .get_rxnfc = gfar_get_nfc,
1902         .get_ts_info = gfar_get_ts_info,
1903 };