drivers/net/ethernet/freescale/gianfar_ethtool.c

   1 /*
   2  *  drivers/net/ethernet/freescale/gianfar_ethtool.c
   3  *
   4  *  Gianfar Ethernet Driver
   5  *  Ethtool support for Gianfar Enet
   6  *  Based on e1000 ethtool support
   7  *
   8  *  Author: Andy Fleming
   9  *  Maintainer: Kumar Gala
  10  *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
  11  *
  12  *  Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
  13  *
  14  *  This software may be used and distributed according to
  15  *  the terms of the GNU Public License, Version 2, incorporated herein
  16  *  by reference.
  17  */
  18
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/kernel.h>
  22 #include <linux/string.h>
  23 #include <linux/errno.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/init.h>
  26 #include <linux/delay.h>
  27 #include <linux/netdevice.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/net_tstamp.h>
  30 #include <linux/skbuff.h>
  31 #include <linux/spinlock.h>
  32 #include <linux/mm.h>
  33
  34 #include <asm/io.h>
  35 #include <asm/irq.h>
  36 #include <asm/uaccess.h>
  37 #include <linux/module.h>
  38 #include <linux/crc32.h>
  39 #include <asm/types.h>
  40 #include <linux/ethtool.h>
  41 #include <linux/mii.h>
  42 #include <linux/phy.h>
  43 #include <linux/sort.h>
  44 #include <linux/if_vlan.h>
  45
  46 #include "gianfar.h"
  47
  48 extern void gfar_start(struct net_device *dev);
  49 extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue,
  50                               int rx_work_limit);
  51
  52 #define GFAR_MAX_COAL_USECS 0xffff
  53 #define GFAR_MAX_COAL_FRAMES 0xff
  54 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  55                             u64 *buf);
  56 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
  57 static int gfar_gcoalesce(struct net_device *dev,
  58                           struct ethtool_coalesce *cvals);
  59 static int gfar_scoalesce(struct net_device *dev,
  60                           struct ethtool_coalesce *cvals);
  61 static void gfar_gringparam(struct net_device *dev,
  62                             struct ethtool_ringparam *rvals);
  63 static int gfar_sringparam(struct net_device *dev,
  64                            struct ethtool_ringparam *rvals);
  65 static void gfar_gdrvinfo(struct net_device *dev,
  66                           struct ethtool_drvinfo *drvinfo);
  67
  68 static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  69         "rx-large-frame-errors",
  70         "rx-short-frame-errors",
  71         "rx-non-octet-errors",
  72         "rx-crc-errors",
  73         "rx-overrun-errors",
  74         "rx-busy-errors",
  75         "rx-babbling-errors",
  76         "rx-truncated-frames",
  77         "ethernet-bus-error",
  78         "tx-babbling-errors",
  79         "tx-underrun-errors",
  80         "rx-skb-missing-errors",
  81         "tx-timeout-errors",
  82         "tx-rx-64-frames",
  83         "tx-rx-65-127-frames",
  84         "tx-rx-128-255-frames",
  85         "tx-rx-256-511-frames",
  86         "tx-rx-512-1023-frames",
  87         "tx-rx-1024-1518-frames",
  88         "tx-rx-1519-1522-good-vlan",
  89         "rx-bytes",
  90         "rx-packets",
  91         "rx-fcs-errors",
  92         "receive-multicast-packet",
  93         "receive-broadcast-packet",
  94         "rx-control-frame-packets",
  95         "rx-pause-frame-packets",
  96         "rx-unknown-op-code",
  97         "rx-alignment-error",
  98         "rx-frame-length-error",
  99         "rx-code-error",
 100         "rx-carrier-sense-error",
 101         "rx-undersize-packets",
 102         "rx-oversize-packets",
 103         "rx-fragmented-frames",
 104         "rx-jabber-frames",
 105         "rx-dropped-frames",
 106         "tx-byte-counter",
 107         "tx-packets",
 108         "tx-multicast-packets",
 109         "tx-broadcast-packets",
 110         "tx-pause-control-frames",
 111         "tx-deferral-packets",
 112         "tx-excessive-deferral-packets",
 113         "tx-single-collision-packets",
 114         "tx-multiple-collision-packets",
 115         "tx-late-collision-packets",
 116         "tx-excessive-collision-packets",
 117         "tx-total-collision",
 118         "reserved",
 119         "tx-dropped-frames",
 120         "tx-jabber-frames",
 121         "tx-fcs-errors",
 122         "tx-control-frames",
 123         "tx-oversize-frames",
 124         "tx-undersize-frames",
 125         "tx-fragmented-frames",
 126 };
 127
 128 /* Fill in a buffer with the strings which correspond to the
 129  * stats */
 130 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
 131 {
 132         struct gfar_private *priv = netdev_priv(dev);
 133
 134         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 135                 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
 136         else
 137                 memcpy(buf, stat_gstrings,
 138                        GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
 139 }
 140
 141 /* Fill in an array of 64-bit statistics from various sources.
 142  * This array will be appended to the end of the ethtool_stats
 143  * structure, and returned to user space
 144  */
 145 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
 146                             u64 *buf)
 147 {
 148         int i;
 149         struct gfar_private *priv = netdev_priv(dev);
 150         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 151         atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
 152
 153         for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 154                 buf[i] = atomic64_read(&extra[i]);
 155
 156         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
 157                 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
 158
 159                 for (; i < GFAR_STATS_LEN; i++, rmon++)
 160                         buf[i] = (u64) gfar_read(rmon);
 161         }
 162 }
 163
 164 static int gfar_sset_count(struct net_device *dev, int sset)
 165 {
 166         struct gfar_private *priv = netdev_priv(dev);
 167
 168         switch (sset) {
 169         case ETH_SS_STATS:
 170                 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 171                         return GFAR_STATS_LEN;
 172                 else
 173                         return GFAR_EXTRA_STATS_LEN;
 174         default:
 175                 return -EOPNOTSUPP;
 176         }
 177 }
 178
 179 /* Fills in the drvinfo structure with some basic info */
 180 static void gfar_gdrvinfo(struct net_device *dev,
 181                           struct ethtool_drvinfo *drvinfo)
 182 {
 183         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 184         strlcpy(drvinfo->version, gfar_driver_version,
 185                 sizeof(drvinfo->version));
 186         strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
 187         strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
 188         drvinfo->regdump_len = 0;
 189         drvinfo->eedump_len = 0;
 190 }
 191
 192
 193 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
 194 {
 195         struct gfar_private *priv = netdev_priv(dev);
 196         struct phy_device *phydev = priv->phydev;
 197
 198         if (NULL == phydev)
 199                 return -ENODEV;
 200
 201         return phy_ethtool_sset(phydev, cmd);
 202 }
 203
 204
 205 /* Return the current settings in the ethtool_cmd structure */
 206 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 207 {
 208         struct gfar_private *priv = netdev_priv(dev);
 209         struct phy_device *phydev = priv->phydev;
 210         struct gfar_priv_rx_q *rx_queue = NULL;
 211         struct gfar_priv_tx_q *tx_queue = NULL;
 212
 213         if (NULL == phydev)
 214                 return -ENODEV;
 215         tx_queue = priv->tx_queue[0];
 216         rx_queue = priv->rx_queue[0];
 217
 218         /* etsec-1.7 and older versions have only one txic
 219          * and rxic regs although they support multiple queues */
 220         cmd->maxtxpkt = get_icft_value(tx_queue->txic);
 221         cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
 222
 223         return phy_ethtool_gset(phydev, cmd);
 224 }
 225
 226 /* Return the length of the register structure */
 227 static int gfar_reglen(struct net_device *dev)
 228 {
 229         return sizeof (struct gfar);
 230 }
 231
 232 /* Return a dump of the GFAR register space */
 233 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 234                           void *regbuf)
 235 {
 236         int i;
 237         struct gfar_private *priv = netdev_priv(dev);
 238         u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 239         u32 *buf = (u32 *) regbuf;
 240
 241         for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 242                 buf[i] = gfar_read(&theregs[i]);
 243 }
 244
 245 /* Convert microseconds to ethernet clock ticks, which changes
 246  * depending on what speed the controller is running at */
 247 static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 248                                      unsigned int usecs)
 249 {
 250         unsigned int count;
 251
 252         /* The timer is different, depending on the interface speed */
 253         switch (priv->phydev->speed) {
 254         case SPEED_1000:
 255                 count = GFAR_GBIT_TIME;
 256                 break;
 257         case SPEED_100:
 258                 count = GFAR_100_TIME;
 259                 break;
 260         case SPEED_10:
 261         default:
 262                 count = GFAR_10_TIME;
 263                 break;
 264         }
 265
 266         /* Make sure we return a number greater than 0
 267          * if usecs > 0 */
 268         return (usecs * 1000 + count - 1) / count;
 269 }
 270
 271 /* Convert ethernet clock ticks to microseconds */
 272 static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 273                                      unsigned int ticks)
 274 {
 275         unsigned int count;
 276
 277         /* The timer is different, depending on the interface speed */
 278         switch (priv->phydev->speed) {
 279         case SPEED_1000:
 280                 count = GFAR_GBIT_TIME;
 281                 break;
 282         case SPEED_100:
 283                 count = GFAR_100_TIME;
 284                 break;
 285         case SPEED_10:
 286         default:
 287                 count = GFAR_10_TIME;
 288                 break;
 289         }
 290
 291         /* Make sure we return a number greater than 0 */
 292         /* if ticks is > 0 */
 293         return (ticks * count) / 1000;
 294 }
 295
 296 /* Get the coalescing parameters, and put them in the cvals
 297  * structure.  */
 298 static int gfar_gcoalesce(struct net_device *dev,
 299                           struct ethtool_coalesce *cvals)
 300 {
 301         struct gfar_private *priv = netdev_priv(dev);
 302         struct gfar_priv_rx_q *rx_queue = NULL;
 303         struct gfar_priv_tx_q *tx_queue = NULL;
 304         unsigned long rxtime;
 305         unsigned long rxcount;
 306         unsigned long txtime;
 307         unsigned long txcount;
 308
 309         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 310                 return -EOPNOTSUPP;
 311
 312         if (NULL == priv->phydev)
 313                 return -ENODEV;
 314
 315         rx_queue = priv->rx_queue[0];
 316         tx_queue = priv->tx_queue[0];
 317
 318         rxtime  = get_ictt_value(rx_queue->rxic);
 319         rxcount = get_icft_value(rx_queue->rxic);
 320         txtime  = get_ictt_value(tx_queue->txic);
 321         txcount = get_icft_value(tx_queue->txic);
 322         cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 323         cvals->rx_max_coalesced_frames = rxcount;
 324
 325         cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 326         cvals->tx_max_coalesced_frames = txcount;
 327
 328         cvals->use_adaptive_rx_coalesce = 0;
 329         cvals->use_adaptive_tx_coalesce = 0;
 330
 331         cvals->pkt_rate_low = 0;
 332         cvals->rx_coalesce_usecs_low = 0;
 333         cvals->rx_max_coalesced_frames_low = 0;
 334         cvals->tx_coalesce_usecs_low = 0;
 335         cvals->tx_max_coalesced_frames_low = 0;
 336
 337         /* When the packet rate is below pkt_rate_high but above
 338          * pkt_rate_low (both measured in packets per second) the
 339          * normal {rx,tx}_* coalescing parameters are used.
 340          */
 341
 342         /* When the packet rate is (measured in packets per second)
 343          * is above pkt_rate_high, the {rx,tx}_*_high parameters are
 344          * used.
 345          */
 346         cvals->pkt_rate_high = 0;
 347         cvals->rx_coalesce_usecs_high = 0;
 348         cvals->rx_max_coalesced_frames_high = 0;
 349         cvals->tx_coalesce_usecs_high = 0;
 350         cvals->tx_max_coalesced_frames_high = 0;
 351
 352         /* How often to do adaptive coalescing packet rate sampling,
 353          * measured in seconds.  Must not be zero.
 354          */
 355         cvals->rate_sample_interval = 0;
 356
 357         return 0;
 358 }
 359
 360 /* Change the coalescing values.
 361  * Both cvals->*_usecs and cvals->*_frames have to be > 0
 362  * in order for coalescing to be active
 363  */
 364 static int gfar_scoalesce(struct net_device *dev,
 365                           struct ethtool_coalesce *cvals)
 366 {
 367         struct gfar_private *priv = netdev_priv(dev);
 368         int i = 0;
 369
 370         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 371                 return -EOPNOTSUPP;
 372
 373         /* Set up rx coalescing */
 374         /* As of now, we will enable/disable coalescing for all
 375          * queues together in case of eTSEC2, this will be modified
 376          * along with the ethtool interface
 377          */
 378         if ((cvals->rx_coalesce_usecs == 0) ||
 379             (cvals->rx_max_coalesced_frames == 0)) {
 380                 for (i = 0; i < priv->num_rx_queues; i++)
 381                         priv->rx_queue[i]->rxcoalescing = 0;
 382         } else {
 383                 for (i = 0; i < priv->num_rx_queues; i++)
 384                         priv->rx_queue[i]->rxcoalescing = 1;
 385         }
 386
 387         if (NULL == priv->phydev)
 388                 return -ENODEV;
 389
 390         /* Check the bounds of the values */
 391         if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 392                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 393                             GFAR_MAX_COAL_USECS);
 394                 return -EINVAL;
 395         }
 396
 397         if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 398                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 399                             GFAR_MAX_COAL_FRAMES);
 400                 return -EINVAL;
 401         }
 402
 403         for (i = 0; i < priv->num_rx_queues; i++) {
 404                 priv->rx_queue[i]->rxic = mk_ic_value(
 405                         cvals->rx_max_coalesced_frames,
 406                         gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 407         }
 408
 409         /* Set up tx coalescing */
 410         if ((cvals->tx_coalesce_usecs == 0) ||
 411             (cvals->tx_max_coalesced_frames == 0)) {
 412                 for (i = 0; i < priv->num_tx_queues; i++)
 413                         priv->tx_queue[i]->txcoalescing = 0;
 414         } else {
 415                 for (i = 0; i < priv->num_tx_queues; i++)
 416                         priv->tx_queue[i]->txcoalescing = 1;
 417         }
 418
 419         /* Check the bounds of the values */
 420         if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 421                 netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 422                             GFAR_MAX_COAL_USECS);
 423                 return -EINVAL;
 424         }
 425
 426         if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 427                 netdev_info(dev, "Coalescing is limited to %d frames\n",
 428                             GFAR_MAX_COAL_FRAMES);
 429                 return -EINVAL;
 430         }
 431
 432         for (i = 0; i < priv->num_tx_queues; i++) {
 433                 priv->tx_queue[i]->txic = mk_ic_value(
 434                         cvals->tx_max_coalesced_frames,
 435                         gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 436         }
 437
 438         gfar_configure_coalescing_all(priv);
 439
 440         return 0;
 441 }
 442
 443 /* Fills in rvals with the current ring parameters.  Currently,
 444  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 445  * jumbo are ignored by the driver */
 446 static void gfar_gringparam(struct net_device *dev,
 447                             struct ethtool_ringparam *rvals)
 448 {
 449         struct gfar_private *priv = netdev_priv(dev);
 450         struct gfar_priv_tx_q *tx_queue = NULL;
 451         struct gfar_priv_rx_q *rx_queue = NULL;
 452
 453         tx_queue = priv->tx_queue[0];
 454         rx_queue = priv->rx_queue[0];
 455
 456         rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 457         rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 458         rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 459         rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 460
 461         /* Values changeable by the user.  The valid values are
 462          * in the range 1 to the "*_max_pending" counterpart above.
 463          */
 464         rvals->rx_pending = rx_queue->rx_ring_size;
 465         rvals->rx_mini_pending = rx_queue->rx_ring_size;
 466         rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 467         rvals->tx_pending = tx_queue->tx_ring_size;
 468 }
 469
 470 /* Change the current ring parameters, stopping the controller if
 471  * necessary so that we don't mess things up while we're in
 472  * motion.  We wait for the ring to be clean before reallocating
 473  * the rings.
 474  */
 475 static int gfar_sringparam(struct net_device *dev,
 476                            struct ethtool_ringparam *rvals)
 477 {
 478         struct gfar_private *priv = netdev_priv(dev);
 479         int err = 0, i = 0;
 480
 481         if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 482                 return -EINVAL;
 483
 484         if (!is_power_of_2(rvals->rx_pending)) {
 485                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 486                 return -EINVAL;
 487         }
 488
 489         if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 490                 return -EINVAL;
 491
 492         if (!is_power_of_2(rvals->tx_pending)) {
 493                 netdev_err(dev, "Ring sizes must be a power of 2\n");
 494                 return -EINVAL;
 495         }
 496
 497
 498         if (dev->flags & IFF_UP) {
 499                 unsigned long flags;
 500
 501                 /* Halt TX and RX, and process the frames which
 502                  * have already been received
 503                  */
 504                 local_irq_save(flags);
 505                 lock_tx_qs(priv);
 506                 lock_rx_qs(priv);
 507
 508                 gfar_halt(dev);
 509
 510                 unlock_rx_qs(priv);
 511                 unlock_tx_qs(priv);
 512                 local_irq_restore(flags);
 513
 514                 for (i = 0; i < priv->num_rx_queues; i++)
 515                         gfar_clean_rx_ring(priv->rx_queue[i],
 516                                            priv->rx_queue[i]->rx_ring_size);
 517
 518                 /* Now we take down the rings to rebuild them */
 519                 stop_gfar(dev);
 520         }
 521
 522         /* Change the size */
 523         for (i = 0; i < priv->num_rx_queues; i++) {
 524                 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 525                 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 526                 priv->tx_queue[i]->num_txbdfree =
 527                         priv->tx_queue[i]->tx_ring_size;
 528         }
 529
 530         /* Rebuild the rings with the new size */
 531         if (dev->flags & IFF_UP) {
 532                 err = startup_gfar(dev);
 533                 netif_tx_wake_all_queues(dev);
 534         }
 535         return err;
 536 }
 537
 538 static void gfar_gpauseparam(struct net_device *dev,
 539                              struct ethtool_pauseparam *epause)
 540 {
 541         struct gfar_private *priv = netdev_priv(dev);
 542
 543         epause->autoneg = !!priv->pause_aneg_en;
 544         epause->rx_pause = !!priv->rx_pause_en;
 545         epause->tx_pause = !!priv->tx_pause_en;
 546 }
 547
 548 static int gfar_spauseparam(struct net_device *dev,
 549                             struct ethtool_pauseparam *epause)
 550 {
 551         struct gfar_private *priv = netdev_priv(dev);
 552         struct phy_device *phydev = priv->phydev;
 553         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 554         u32 oldadv, newadv;
 555
 556         if (!(phydev->supported & SUPPORTED_Pause) ||
 557             (!(phydev->supported & SUPPORTED_Asym_Pause) &&
 558              (epause->rx_pause != epause->tx_pause)))
 559                 return -EINVAL;
 560
 561         priv->rx_pause_en = priv->tx_pause_en = 0;
 562         if (epause->rx_pause) {
 563                 priv->rx_pause_en = 1;
 564
 565                 if (epause->tx_pause) {
 566                         priv->tx_pause_en = 1;
 567                         /* FLOW_CTRL_RX & TX */
 568                         newadv = ADVERTISED_Pause;
 569                 } else  /* FLOW_CTLR_RX */
 570                         newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
 571         } else if (epause->tx_pause) {
 572                 priv->tx_pause_en = 1;
 573                 /* FLOW_CTLR_TX */
 574                 newadv = ADVERTISED_Asym_Pause;
 575         } else
 576                 newadv = 0;
 577
 578         if (epause->autoneg)
 579                 priv->pause_aneg_en = 1;
 580         else
 581                 priv->pause_aneg_en = 0;
 582
 583         oldadv = phydev->advertising &
 584                 (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 585         if (oldadv != newadv) {
 586                 phydev->advertising &=
 587                         ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 588                 phydev->advertising |= newadv;
 589                 if (phydev->autoneg)
 590                         /* inform link partner of our
 591                          * new flow ctrl settings
 592                          */
 593                         return phy_start_aneg(phydev);
 594
 595                 if (!epause->autoneg) {
 596                         u32 tempval;
 597                         tempval = gfar_read(&regs->maccfg1);
 598                         tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 599                         if (priv->tx_pause_en)
 600                                 tempval |= MACCFG1_TX_FLOW;
 601                         if (priv->rx_pause_en)
 602                                 tempval |= MACCFG1_RX_FLOW;
 603                         gfar_write(&regs->maccfg1, tempval);
 604                 }
 605         }
 606
 607         return 0;
 608 }
 609
 610 int gfar_set_features(struct net_device *dev, netdev_features_t features)
 611 {
 612         struct gfar_private *priv = netdev_priv(dev);
 613         unsigned long flags;
 614         int err = 0, i = 0;
 615         netdev_features_t changed = dev->features ^ features;
 616
 617         if (changed & (NETIF_F_HW_VLAN_CTAG_TX|NETIF_F_HW_VLAN_CTAG_RX))
 618                 gfar_vlan_mode(dev, features);
 619
 620         if (!(changed & NETIF_F_RXCSUM))
 621                 return 0;
 622
 623         if (dev->flags & IFF_UP) {
 624                 /* Halt TX and RX, and process the frames which
 625                  * have already been received
 626                  */
 627                 local_irq_save(flags);
 628                 lock_tx_qs(priv);
 629                 lock_rx_qs(priv);
 630
 631                 gfar_halt(dev);
 632
 633                 unlock_tx_qs(priv);
 634                 unlock_rx_qs(priv);
 635                 local_irq_restore(flags);
 636
 637                 for (i = 0; i < priv->num_rx_queues; i++)
 638                         gfar_clean_rx_ring(priv->rx_queue[i],
 639                                            priv->rx_queue[i]->rx_ring_size);
 640
 641                 /* Now we take down the rings to rebuild them */
 642                 stop_gfar(dev);
 643
 644                 dev->features = features;
 645
 646                 err = startup_gfar(dev);
 647                 netif_tx_wake_all_queues(dev);
 648         }
 649         return err;
 650 }
 651
 652 static uint32_t gfar_get_msglevel(struct net_device *dev)
 653 {
 654         struct gfar_private *priv = netdev_priv(dev);
 655
 656         return priv->msg_enable;
 657 }
 658
 659 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 660 {
 661         struct gfar_private *priv = netdev_priv(dev);
 662
 663         priv->msg_enable = data;
 664 }
 665
 666 #ifdef CONFIG_PM
 667 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 668 {
 669         struct gfar_private *priv = netdev_priv(dev);
 670
 671         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
 672                 wol->supported = WAKE_MAGIC;
 673                 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
 674         } else {
 675                 wol->supported = wol->wolopts = 0;
 676         }
 677 }
 678
 679 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 680 {
 681         struct gfar_private *priv = netdev_priv(dev);
 682         unsigned long flags;
 683
 684         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
 685             wol->wolopts != 0)
 686                 return -EINVAL;
 687
 688         if (wol->wolopts & ~WAKE_MAGIC)
 689                 return -EINVAL;
 690
 691         device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);
 692
 693         spin_lock_irqsave(&priv->bflock, flags);
 694         priv->wol_en =  !!device_may_wakeup(&dev->dev);
 695         spin_unlock_irqrestore(&priv->bflock, flags);
 696
 697         return 0;
 698 }
 699 #endif
 700
 701 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 702 {
 703         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 704
 705         if (ethflow & RXH_L2DA) {
 706                 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
 707                       RQFCR_HASH | 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                 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
 714                       RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 715                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 716                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 717                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 718                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 719         }
 720
 721         if (ethflow & RXH_VLAN) {
 722                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 723                       RQFCR_AND | RQFCR_HASHTBL_0;
 724                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 725                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 726                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 727                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 728         }
 729
 730         if (ethflow & RXH_IP_SRC) {
 731                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 732                       RQFCR_AND | RQFCR_HASHTBL_0;
 733                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 734                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 735                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 736                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 737         }
 738
 739         if (ethflow & (RXH_IP_DST)) {
 740                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 741                       RQFCR_AND | RQFCR_HASHTBL_0;
 742                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 743                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 744                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 745                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 746         }
 747
 748         if (ethflow & RXH_L3_PROTO) {
 749                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 750                       RQFCR_AND | RQFCR_HASHTBL_0;
 751                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 752                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 753                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 754                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 755         }
 756
 757         if (ethflow & RXH_L4_B_0_1) {
 758                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 759                       RQFCR_AND | RQFCR_HASHTBL_0;
 760                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 761                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 762                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 763                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 764         }
 765
 766         if (ethflow & RXH_L4_B_2_3) {
 767                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 768                       RQFCR_AND | RQFCR_HASHTBL_0;
 769                 priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 770                 priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 771                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 772                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 773         }
 774 }
 775
 776 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 777                                        u64 class)
 778 {
 779         unsigned int last_rule_idx = priv->cur_filer_idx;
 780         unsigned int cmp_rqfpr;
 781         unsigned int *local_rqfpr;
 782         unsigned int *local_rqfcr;
 783         int i = 0x0, k = 0x0;
 784         int j = MAX_FILER_IDX, l = 0x0;
 785         int ret = 1;
 786
 787         local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 788                                     GFP_KERNEL);
 789         local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 790                                     GFP_KERNEL);
 791         if (!local_rqfpr || !local_rqfcr) {
 792                 ret = 0;
 793                 goto err;
 794         }
 795
 796         switch (class) {
 797         case TCP_V4_FLOW:
 798                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 799                 break;
 800         case UDP_V4_FLOW:
 801                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 802                 break;
 803         case TCP_V6_FLOW:
 804                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 805                 break;
 806         case UDP_V6_FLOW:
 807                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 808                 break;
 809         default:
 810                 netdev_err(priv->ndev,
 811                            "Right now this class is not supported\n");
 812                 ret = 0;
 813                 goto err;
 814         }
 815
 816         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 817                 local_rqfpr[j] = priv->ftp_rqfpr[i];
 818                 local_rqfcr[j] = priv->ftp_rqfcr[i];
 819                 j--;
 820                 if ((priv->ftp_rqfcr[i] ==
 821                      (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 822                     (priv->ftp_rqfpr[i] == cmp_rqfpr))
 823                         break;
 824         }
 825
 826         if (i == MAX_FILER_IDX + 1) {
 827                 netdev_err(priv->ndev,
 828                            "No parse rule found, can't create hash rules\n");
 829                 ret = 0;
 830                 goto err;
 831         }
 832
 833         /* If a match was found, then it begins the starting of a cluster rule
 834          * if it was already programmed, we need to overwrite these rules
 835          */
 836         for (l = i+1; l < MAX_FILER_IDX; l++) {
 837                 if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 838                     !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 839                         priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 840                                              RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 841                         priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 842                         gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 843                                          priv->ftp_rqfpr[l]);
 844                         break;
 845                 }
 846
 847                 if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 848                         (priv->ftp_rqfcr[l] & RQFCR_AND))
 849                         continue;
 850                 else {
 851                         local_rqfpr[j] = priv->ftp_rqfpr[l];
 852                         local_rqfcr[j] = priv->ftp_rqfcr[l];
 853                         j--;
 854                 }
 855         }
 856
 857         priv->cur_filer_idx = l - 1;
 858         last_rule_idx = l;
 859
 860         /* hash rules */
 861         ethflow_to_filer_rules(priv, ethflow);
 862
 863         /* Write back the popped out rules again */
 864         for (k = j+1; k < MAX_FILER_IDX; k++) {
 865                 priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 866                 priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 867                 gfar_write_filer(priv, priv->cur_filer_idx,
 868                                  local_rqfcr[k], local_rqfpr[k]);
 869                 if (!priv->cur_filer_idx)
 870                         break;
 871                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 872         }
 873
 874 err:
 875         kfree(local_rqfcr);
 876         kfree(local_rqfpr);
 877         return ret;
 878 }
 879
 880 static int gfar_set_hash_opts(struct gfar_private *priv,
 881                               struct ethtool_rxnfc *cmd)
 882 {
 883         /* write the filer rules here */
 884         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 885                 return -EINVAL;
 886
 887         return 0;
 888 }
 889
 890 static int gfar_check_filer_hardware(struct gfar_private *priv)
 891 {
 892         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 893         u32 i;
 894
 895         /* Check if we are in FIFO mode */
 896         i = gfar_read(&regs->ecntrl);
 897         i &= ECNTRL_FIFM;
 898         if (i == ECNTRL_FIFM) {
 899                 netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 900                 i = gfar_read(&regs->rctrl);
 901                 i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 902                 if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 903                         netdev_info(priv->ndev,
 904                                     "Receive Queue Filtering enabled\n");
 905                 } else {
 906                         netdev_warn(priv->ndev,
 907                                     "Receive Queue Filtering disabled\n");
 908                         return -EOPNOTSUPP;
 909                 }
 910         }
 911         /* Or in standard mode */
 912         else {
 913                 i = gfar_read(&regs->rctrl);
 914                 i &= RCTRL_PRSDEP_MASK;
 915                 if (i == RCTRL_PRSDEP_MASK) {
 916                         netdev_info(priv->ndev,
 917                                     "Receive Queue Filtering enabled\n");
 918                 } else {
 919                         netdev_warn(priv->ndev,
 920                                     "Receive Queue Filtering disabled\n");
 921                         return -EOPNOTSUPP;
 922                 }
 923         }
 924
 925         /* Sets the properties for arbitrary filer rule
 926          * to the first 4 Layer 4 Bytes
 927          */
 928         gfar_write(&regs->rbifx, 0xC0C1C2C3);
 929         return 0;
 930 }
 931
 932 static int gfar_comp_asc(const void *a, const void *b)
 933 {
 934         return memcmp(a, b, 4);
 935 }
 936
 937 static int gfar_comp_desc(const void *a, const void *b)
 938 {
 939         return -memcmp(a, b, 4);
 940 }
 941
 942 static void gfar_swap(void *a, void *b, int size)
 943 {
 944         u32 *_a = a;
 945         u32 *_b = b;
 946
 947         swap(_a[0], _b[0]);
 948         swap(_a[1], _b[1]);
 949         swap(_a[2], _b[2]);
 950         swap(_a[3], _b[3]);
 951 }
 952
 953 /* Write a mask to filer cache */
 954 static void gfar_set_mask(u32 mask, struct filer_table *tab)
 955 {
 956         tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 957         tab->fe[tab->index].prop = mask;
 958         tab->index++;
 959 }
 960
 961 /* Sets parse bits (e.g. IP or TCP) */
 962 static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 963 {
 964         gfar_set_mask(mask, tab);
 965         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 966                                    RQFCR_AND;
 967         tab->fe[tab->index].prop = value;
 968         tab->index++;
 969 }
 970
 971 static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 972                                        struct filer_table *tab)
 973 {
 974         gfar_set_mask(mask, tab);
 975         tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 976         tab->fe[tab->index].prop = value;
 977         tab->index++;
 978 }
 979
 980 /* For setting a tuple of value and mask of type flag
 981  * Example:
 982  * IP-Src = 10.0.0.0/255.0.0.0
 983  * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 984  *
 985  * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 986  * For a don't care mask it gives us a 0
 987  *
 988  * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 989  * and MAC stuff on an upper level (due to missing information on this level).
 990  * For these guys we can discard them if they are value=0 and mask=0.
 991  *
 992  * Further the all masks are one-padded for better hardware efficiency.
 993  */
 994 static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 995                                struct filer_table *tab)
 996 {
 997         switch (flag) {
 998                 /* 3bit */
 999         case RQFCR_PID_PRI:
1000                 if (!(value | mask))
1001                         return;
1002                 mask |= RQFCR_PID_PRI_MASK;
1003                 break;
1004                 /* 8bit */
1005         case RQFCR_PID_L4P:
1006         case RQFCR_PID_TOS:
1007                 if (!~(mask | RQFCR_PID_L4P_MASK))
1008                         return;
1009                 if (!mask)
1010                         mask = ~0;
1011                 else
1012                         mask |= RQFCR_PID_L4P_MASK;
1013                 break;
1014                 /* 12bit */
1015         case RQFCR_PID_VID:
1016                 if (!(value | mask))
1017                         return;
1018                 mask |= RQFCR_PID_VID_MASK;
1019                 break;
1020                 /* 16bit */
1021         case RQFCR_PID_DPT:
1022         case RQFCR_PID_SPT:
1023         case RQFCR_PID_ETY:
1024                 if (!~(mask | RQFCR_PID_PORT_MASK))
1025                         return;
1026                 if (!mask)
1027                         mask = ~0;
1028                 else
1029                         mask |= RQFCR_PID_PORT_MASK;
1030                 break;
1031                 /* 24bit */
1032         case RQFCR_PID_DAH:
1033         case RQFCR_PID_DAL:
1034         case RQFCR_PID_SAH:
1035         case RQFCR_PID_SAL:
1036                 if (!(value | mask))
1037                         return;
1038                 mask |= RQFCR_PID_MAC_MASK;
1039                 break;
1040                 /* for all real 32bit masks */
1041         default:
1042                 if (!~mask)
1043                         return;
1044                 if (!mask)
1045                         mask = ~0;
1046                 break;
1047         }
1048         gfar_set_general_attribute(value, mask, flag, tab);
1049 }
1050
1051 /* Translates value and mask for UDP, TCP or SCTP */
1052 static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
1053                               struct ethtool_tcpip4_spec *mask,
1054                               struct filer_table *tab)
1055 {
1056         gfar_set_attribute(be32_to_cpu(value->ip4src),
1057                            be32_to_cpu(mask->ip4src),
1058                            RQFCR_PID_SIA, tab);
1059         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1060                            be32_to_cpu(mask->ip4dst),
1061                            RQFCR_PID_DIA, tab);
1062         gfar_set_attribute(be16_to_cpu(value->pdst),
1063                            be16_to_cpu(mask->pdst),
1064                            RQFCR_PID_DPT, tab);
1065         gfar_set_attribute(be16_to_cpu(value->psrc),
1066                            be16_to_cpu(mask->psrc),
1067                            RQFCR_PID_SPT, tab);
1068         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1069 }
1070
1071 /* Translates value and mask for RAW-IP4 */
1072 static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1073                              struct ethtool_usrip4_spec *mask,
1074                              struct filer_table *tab)
1075 {
1076         gfar_set_attribute(be32_to_cpu(value->ip4src),
1077                            be32_to_cpu(mask->ip4src),
1078                            RQFCR_PID_SIA, tab);
1079         gfar_set_attribute(be32_to_cpu(value->ip4dst),
1080                            be32_to_cpu(mask->ip4dst),
1081                            RQFCR_PID_DIA, tab);
1082         gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1083         gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1084         gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1085                            be32_to_cpu(mask->l4_4_bytes),
1086                            RQFCR_PID_ARB, tab);
1087
1088 }
1089
1090 /* Translates value and mask for ETHER spec */
1091 static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1092                            struct filer_table *tab)
1093 {
1094         u32 upper_temp_mask = 0;
1095         u32 lower_temp_mask = 0;
1096
1097         /* Source address */
1098         if (!is_broadcast_ether_addr(mask->h_source)) {
1099                 if (is_zero_ether_addr(mask->h_source)) {
1100                         upper_temp_mask = 0xFFFFFFFF;
1101                         lower_temp_mask = 0xFFFFFFFF;
1102                 } else {
1103                         upper_temp_mask = mask->h_source[0] << 16 |
1104                                           mask->h_source[1] << 8  |
1105                                           mask->h_source[2];
1106                         lower_temp_mask = mask->h_source[3] << 16 |
1107                                           mask->h_source[4] << 8  |
1108                                           mask->h_source[5];
1109                 }
1110                 /* Upper 24bit */
1111                 gfar_set_attribute(value->h_source[0] << 16 |
1112                                    value->h_source[1] << 8  |
1113                                    value->h_source[2],
1114                                    upper_temp_mask, RQFCR_PID_SAH, tab);
1115                 /* And the same for the lower part */
1116                 gfar_set_attribute(value->h_source[3] << 16 |
1117                                    value->h_source[4] << 8  |
1118                                    value->h_source[5],
1119                                    lower_temp_mask, RQFCR_PID_SAL, tab);
1120         }
1121         /* Destination address */
1122         if (!is_broadcast_ether_addr(mask->h_dest)) {
1123                 /* Special for destination is limited broadcast */
1124                 if ((is_broadcast_ether_addr(value->h_dest) &&
1125                     is_zero_ether_addr(mask->h_dest))) {
1126                         gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1127                 } else {
1128                         if (is_zero_ether_addr(mask->h_dest)) {
1129                                 upper_temp_mask = 0xFFFFFFFF;
1130                                 lower_temp_mask = 0xFFFFFFFF;
1131                         } else {
1132                                 upper_temp_mask = mask->h_dest[0] << 16 |
1133                                                   mask->h_dest[1] << 8  |
1134                                                   mask->h_dest[2];
1135                                 lower_temp_mask = mask->h_dest[3] << 16 |
1136                                                   mask->h_dest[4] << 8  |
1137                                                   mask->h_dest[5];
1138                         }
1139
1140                         /* Upper 24bit */
1141                         gfar_set_attribute(value->h_dest[0] << 16 |
1142                                            value->h_dest[1] << 8  |
1143                                            value->h_dest[2],
1144                                            upper_temp_mask, RQFCR_PID_DAH, tab);
1145                         /* And the same for the lower part */
1146                         gfar_set_attribute(value->h_dest[3] << 16 |
1147                                            value->h_dest[4] << 8  |
1148                                            value->h_dest[5],
1149                                            lower_temp_mask, RQFCR_PID_DAL, tab);
1150                 }
1151         }
1152
1153         gfar_set_attribute(be16_to_cpu(value->h_proto),
1154                            be16_to_cpu(mask->h_proto),
1155                            RQFCR_PID_ETY, tab);
1156 }
1157
1158 static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1159 {
1160         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1161 }
1162
1163 static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1164 {
1165         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1166 }
1167
1168 static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1169 {
1170         return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1171 }
1172
1173 static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1174 {
1175         return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1176 }
1177
1178 static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1179 {
1180         return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1181                 VLAN_PRIO_SHIFT;
1182 }
1183
1184 static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1185 {
1186         return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1187                 VLAN_PRIO_SHIFT;
1188 }
1189
1190 /* Convert a rule to binary filter format of gianfar */
1191 static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1192                                  struct filer_table *tab)
1193 {
1194         u32 vlan = 0, vlan_mask = 0;
1195         u32 id = 0, id_mask = 0;
1196         u32 cfi = 0, cfi_mask = 0;
1197         u32 prio = 0, prio_mask = 0;
1198         u32 old_index = tab->index;
1199
1200         /* Check if vlan is wanted */
1201         if ((rule->flow_type & FLOW_EXT) &&
1202             (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1203                 if (!rule->m_ext.vlan_tci)
1204                         rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1205
1206                 vlan = RQFPR_VLN;
1207                 vlan_mask = RQFPR_VLN;
1208
1209                 /* Separate the fields */
1210                 id = vlan_tci_vid(rule);
1211                 id_mask = vlan_tci_vidm(rule);
1212                 cfi = vlan_tci_cfi(rule);
1213                 cfi_mask = vlan_tci_cfim(rule);
1214                 prio = vlan_tci_prio(rule);
1215                 prio_mask = vlan_tci_priom(rule);
1216
1217                 if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1218                         vlan |= RQFPR_CFI;
1219                         vlan_mask |= RQFPR_CFI;
1220                 } else if (cfi != VLAN_TAG_PRESENT &&
1221                            cfi_mask == VLAN_TAG_PRESENT) {
1222                         vlan_mask |= RQFPR_CFI;
1223                 }
1224         }
1225
1226         switch (rule->flow_type & ~FLOW_EXT) {
1227         case TCP_V4_FLOW:
1228                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1229                                     RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1230                 gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1231                                   &rule->m_u.tcp_ip4_spec, tab);
1232                 break;
1233         case UDP_V4_FLOW:
1234                 gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1235                                     RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1236                 gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1237                                   &rule->m_u.udp_ip4_spec, tab);
1238                 break;
1239         case SCTP_V4_FLOW:
1240                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1241                                     tab);
1242                 gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1243                 gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1244                                   (struct ethtool_tcpip4_spec *)&rule->m_u,
1245                                   tab);
1246                 break;
1247         case IP_USER_FLOW:
1248                 gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1249                                     tab);
1250                 gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1251                                  (struct ethtool_usrip4_spec *) &rule->m_u,
1252                                  tab);
1253                 break;
1254         case ETHER_FLOW:
1255                 if (vlan)
1256                         gfar_set_parse_bits(vlan, vlan_mask, tab);
1257                 gfar_set_ether((struct ethhdr *) &rule->h_u,
1258                                (struct ethhdr *) &rule->m_u, tab);
1259                 break;
1260         default:
1261                 return -1;
1262         }
1263
1264         /* Set the vlan attributes in the end */
1265         if (vlan) {
1266                 gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1267                 gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1268         }
1269
1270         /* If there has been nothing written till now, it must be a default */
1271         if (tab->index == old_index) {
1272                 gfar_set_mask(0xFFFFFFFF, tab);
1273                 tab->fe[tab->index].ctrl = 0x20;
1274                 tab->fe[tab->index].prop = 0x0;
1275                 tab->index++;
1276         }
1277
1278         /* Remove last AND */
1279         tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1280
1281         /* Specify which queue to use or to drop */
1282         if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1283                 tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1284         else
1285                 tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1286
1287         /* Only big enough entries can be clustered */
1288         if (tab->index > (old_index + 2)) {
1289                 tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1290                 tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1291         }
1292
1293         /* In rare cases the cache can be full while there is
1294          * free space in hw
1295          */
1296         if (tab->index > MAX_FILER_CACHE_IDX - 1)
1297                 return -EBUSY;
1298
1299         return 0;
1300 }
1301
1302 /* Copy size filer entries */
1303 static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
1304                                     struct gfar_filer_entry src[0], s32 size)
1305 {
1306         while (size > 0) {
1307                 size--;
1308                 dst[size].ctrl = src[size].ctrl;
1309                 dst[size].prop = src[size].prop;
1310         }
1311 }
1312
1313 /* Delete the contents of the filer-table between start and end
1314  * and collapse them
1315  */
1316 static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
1317 {
1318         int length;
1319
1320         if (end > MAX_FILER_CACHE_IDX || end < begin)
1321                 return -EINVAL;
1322
1323         end++;
1324         length = end - begin;
1325
1326         /* Copy */
1327         while (end < tab->index) {
1328                 tab->fe[begin].ctrl = tab->fe[end].ctrl;
1329                 tab->fe[begin++].prop = tab->fe[end++].prop;
1330
1331         }
1332         /* Fill up with don't cares */
1333         while (begin < tab->index) {
1334                 tab->fe[begin].ctrl = 0x60;
1335                 tab->fe[begin].prop = 0xFFFFFFFF;
1336                 begin++;
1337         }
1338
1339         tab->index -= length;
1340         return 0;
1341 }
1342
1343 /* Make space on the wanted location */
1344 static int gfar_expand_filer_entries(u32 begin, u32 length,
1345                                      struct filer_table *tab)
1346 {
1347         if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
1348             begin > MAX_FILER_CACHE_IDX)
1349                 return -EINVAL;
1350
1351         gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
1352                                 tab->index - length + 1);
1353
1354         tab->index += length;
1355         return 0;
1356 }
1357
1358 static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
1359 {
1360         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1361              start++) {
1362                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1363                     (RQFCR_AND | RQFCR_CLE))
1364                         return start;
1365         }
1366         return -1;
1367 }
1368
1369 static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
1370 {
1371         for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
1372              start++) {
1373                 if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
1374                     (RQFCR_CLE))
1375                         return start;
1376         }
1377         return -1;
1378 }
1379
1380 /* Uses hardwares clustering option to reduce
1381  * the number of filer table entries
1382  */
1383 static void gfar_cluster_filer(struct filer_table *tab)
1384 {
1385         s32 i = -1, j, iend, jend;
1386
1387         while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
1388                 j = i;
1389                 while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
1390                         /* The cluster entries self and the previous one
1391                          * (a mask) must be identical!
1392                          */
1393                         if (tab->fe[i].ctrl != tab->fe[j].ctrl)
1394                                 break;
1395                         if (tab->fe[i].prop != tab->fe[j].prop)
1396                                 break;
1397                         if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
1398                                 break;
1399                         if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
1400                                 break;
1401                         iend = gfar_get_next_cluster_end(i, tab);
1402                         jend = gfar_get_next_cluster_end(j, tab);
1403                         if (jend == -1 || iend == -1)
1404                                 break;
1405
1406                         /* First we make some free space, where our cluster
1407                          * element should be. Then we copy it there and finally
1408                          * delete in from its old location.
1409                          */
1410                         if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
1411                             -EINVAL)
1412                                 break;
1413
1414                         gfar_copy_filer_entries(&(tab->fe[iend + 1]),
1415                                                 &(tab->fe[jend + 1]), jend - j);
1416
1417                         if (gfar_trim_filer_entries(jend - 1,
1418                                                     jend + (jend - j),
1419                                                     tab) == -EINVAL)
1420                                 return;
1421
1422                         /* Mask out cluster bit */
1423                         tab->fe[iend].ctrl &= ~(RQFCR_CLE);
1424                 }
1425         }
1426 }
1427
1428 /* Swaps the masked bits of a1<>a2 and b1<>b2 */
1429 static void gfar_swap_bits(struct gfar_filer_entry *a1,
1430                            struct gfar_filer_entry *a2,
1431                            struct gfar_filer_entry *b1,
1432                            struct gfar_filer_entry *b2, u32 mask)
1433 {
1434         u32 temp[4];
1435         temp[0] = a1->ctrl & mask;
1436         temp[1] = a2->ctrl & mask;
1437         temp[2] = b1->ctrl & mask;
1438         temp[3] = b2->ctrl & mask;
1439
1440         a1->ctrl &= ~mask;
1441         a2->ctrl &= ~mask;
1442         b1->ctrl &= ~mask;
1443         b2->ctrl &= ~mask;
1444
1445         a1->ctrl |= temp[1];
1446         a2->ctrl |= temp[0];
1447         b1->ctrl |= temp[3];
1448         b2->ctrl |= temp[2];
1449 }
1450
1451 /* Generate a list consisting of masks values with their start and
1452  * end of validity and block as indicator for parts belonging
1453  * together (glued by ANDs) in mask_table
1454  */
1455 static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
1456                                     struct filer_table *tab)
1457 {
1458         u32 i, and_index = 0, block_index = 1;
1459
1460         for (i = 0; i < tab->index; i++) {
1461
1462                 /* LSByte of control = 0 sets a mask */
1463                 if (!(tab->fe[i].ctrl & 0xF)) {
1464                         mask_table[and_index].mask = tab->fe[i].prop;
1465                         mask_table[and_index].start = i;
1466                         mask_table[and_index].block = block_index;
1467                         if (and_index >= 1)
1468                                 mask_table[and_index - 1].end = i - 1;
1469                         and_index++;
1470                 }
1471                 /* cluster starts and ends will be separated because they should
1472                  * hold their position
1473                  */
1474                 if (tab->fe[i].ctrl & RQFCR_CLE)
1475                         block_index++;
1476                 /* A not set AND indicates the end of a depended block */
1477                 if (!(tab->fe[i].ctrl & RQFCR_AND))
1478                         block_index++;
1479         }
1480
1481         mask_table[and_index - 1].end = i - 1;
1482
1483         return and_index;
1484 }
1485
1486 /* Sorts the entries of mask_table by the values of the masks.
1487  * Important: The 0xFF80 flags of the first and last entry of a
1488  * block must hold their position (which queue, CLusterEnable, ReJEct,
1489  * AND)
1490  */
1491 static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
1492                                  struct filer_table *temp_table, u32 and_index)
1493 {
1494         /* Pointer to compare function (_asc or _desc) */
1495         int (*gfar_comp)(const void *, const void *);
1496
1497         u32 i, size = 0, start = 0, prev = 1;
1498         u32 old_first, old_last, new_first, new_last;
1499
1500         gfar_comp = &gfar_comp_desc;
1501
1502         for (i = 0; i < and_index; i++) {
1503                 if (prev != mask_table[i].block) {
1504                         old_first = mask_table[start].start + 1;
1505                         old_last = mask_table[i - 1].end;
1506                         sort(mask_table + start, size,
1507                              sizeof(struct gfar_mask_entry),
1508                              gfar_comp, &gfar_swap);
1509
1510                         /* Toggle order for every block. This makes the
1511                          * thing more efficient!
1512                          */
1513                         if (gfar_comp == gfar_comp_desc)
1514                                 gfar_comp = &gfar_comp_asc;
1515                         else
1516                                 gfar_comp = &gfar_comp_desc;
1517
1518                         new_first = mask_table[start].start + 1;
1519                         new_last = mask_table[i - 1].end;
1520
1521                         gfar_swap_bits(&temp_table->fe[new_first],
1522                                        &temp_table->fe[old_first],
1523                                        &temp_table->fe[new_last],
1524                                        &temp_table->fe[old_last],
1525                                        RQFCR_QUEUE | RQFCR_CLE |
1526                                        RQFCR_RJE | RQFCR_AND);
1527
1528                         start = i;
1529                         size = 0;
1530                 }
1531                 size++;
1532                 prev = mask_table[i].block;
1533         }
1534 }
1535
1536 /* Reduces the number of masks needed in the filer table to save entries
1537  * This is done by sorting the masks of a depended block. A depended block is
1538  * identified by gluing ANDs or CLE. The sorting order toggles after every
1539  * block. Of course entries in scope of a mask must change their location with
1540  * it.
1541  */
1542 static int gfar_optimize_filer_masks(struct filer_table *tab)
1543 {
1544         struct filer_table *temp_table;
1545         struct gfar_mask_entry *mask_table;
1546
1547         u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
1548         s32 ret = 0;
1549
1550         /* We need a copy of the filer table because
1551          * we want to change its order
1552          */
1553         temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
1554         if (temp_table == NULL)
1555                 return -ENOMEM;
1556
1557         mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
1558                              sizeof(struct gfar_mask_entry), GFP_KERNEL);
1559
1560         if (mask_table == NULL) {
1561                 ret = -ENOMEM;
1562                 goto end;
1563         }
1564
1565         and_index = gfar_generate_mask_table(mask_table, tab);
1566
1567         gfar_sort_mask_table(mask_table, temp_table, and_index);
1568
1569         /* Now we can copy the data from our duplicated filer table to
1570          * the real one in the order the mask table says
1571          */
1572         for (i = 0; i < and_index; i++) {
1573                 size = mask_table[i].end - mask_table[i].start + 1;
1574                 gfar_copy_filer_entries(&(tab->fe[j]),
1575                                 &(temp_table->fe[mask_table[i].start]), size);
1576                 j += size;
1577         }
1578
1579         /* And finally we just have to check for duplicated masks and drop the
1580          * second ones
1581          */
1582         for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1583                 if (tab->fe[i].ctrl == 0x80) {
1584                         previous_mask = i++;
1585                         break;
1586                 }
1587         }
1588         for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
1589                 if (tab->fe[i].ctrl == 0x80) {
1590                         if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
1591                                 /* Two identical ones found!
1592                                  * So drop the second one!
1593                                  */
1594                                 gfar_trim_filer_entries(i, i, tab);
1595                         } else
1596                                 /* Not identical! */
1597                                 previous_mask = i;
1598                 }
1599         }
1600
1601         kfree(mask_table);
1602 end:    kfree(temp_table);
1603         return ret;
1604 }
1605
1606 /* Write the bit-pattern from software's buffer to hardware registers */
1607 static int gfar_write_filer_table(struct gfar_private *priv,
1608                                   struct filer_table *tab)
1609 {
1610         u32 i = 0;
1611         if (tab->index > MAX_FILER_IDX - 1)
1612                 return -EBUSY;
1613
1614         /* Avoid inconsistent filer table to be processed */
1615         lock_rx_qs(priv);
1616
1617         /* Fill regular entries */
1618         for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl);
1619              i++)
1620                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1621         /* Fill the rest with fall-troughs */
1622         for (; i < MAX_FILER_IDX - 1; i++)
1623                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1624         /* Last entry must be default accept
1625          * because that's what people expect
1626          */
1627         gfar_write_filer(priv, i, 0x20, 0x0);
1628
1629         unlock_rx_qs(priv);
1630
1631         return 0;
1632 }
1633
1634 static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1635                                  struct gfar_private *priv)
1636 {
1637
1638         if (flow->flow_type & FLOW_EXT) {
1639                 if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1640                         netdev_warn(priv->ndev,
1641                                     "User-specific data not supported!\n");
1642                 if (~flow->m_ext.vlan_etype)
1643                         netdev_warn(priv->ndev,
1644                                     "VLAN-etype not supported!\n");
1645         }
1646         if (flow->flow_type == IP_USER_FLOW)
1647                 if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1648                         netdev_warn(priv->ndev,
1649                                     "IP-Version differing from IPv4 not supported!\n");
1650
1651         return 0;
1652 }
1653
1654 static int gfar_process_filer_changes(struct gfar_private *priv)
1655 {
1656         struct ethtool_flow_spec_container *j;
1657         struct filer_table *tab;
1658         s32 i = 0;
1659         s32 ret = 0;
1660
1661         /* So index is set to zero, too! */
1662         tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1663         if (tab == NULL)
1664                 return -ENOMEM;
1665
1666         /* Now convert the existing filer data from flow_spec into
1667          * filer tables binary format
1668          */
1669         list_for_each_entry(j, &priv->rx_list.list, list) {
1670                 ret = gfar_convert_to_filer(&j->fs, tab);
1671                 if (ret == -EBUSY) {
1672                         netdev_err(priv->ndev,
1673                                    "Rule not added: No free space!\n");
1674                         goto end;
1675                 }
1676                 if (ret == -1) {
1677                         netdev_err(priv->ndev,
1678                                    "Rule not added: Unsupported Flow-type!\n");
1679                         goto end;
1680                 }
1681         }
1682
1683         i = tab->index;
1684
1685         /* Optimizations to save entries */
1686         gfar_cluster_filer(tab);
1687         gfar_optimize_filer_masks(tab);
1688
1689         pr_debug("\tSummary:\n"
1690                  "\tData on hardware: %d\n"
1691                  "\tCompression rate: %d%%\n",
1692                  tab->index, 100 - (100 * tab->index) / i);
1693
1694         /* Write everything to hardware */
1695         ret = gfar_write_filer_table(priv, tab);
1696         if (ret == -EBUSY) {
1697                 netdev_err(priv->ndev, "Rule not added: No free space!\n");
1698                 goto end;
1699         }
1700
1701 end:
1702         kfree(tab);
1703         return ret;
1704 }
1705
1706 static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1707 {
1708         u32 i = 0;
1709
1710         for (i = 0; i < sizeof(flow->m_u); i++)
1711                 flow->m_u.hdata[i] ^= 0xFF;
1712
1713         flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1714         flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1715         flow->m_ext.data[0] ^= cpu_to_be32(~0);
1716         flow->m_ext.data[1] ^= cpu_to_be32(~0);
1717 }
1718
1719 static int gfar_add_cls(struct gfar_private *priv,
1720                         struct ethtool_rx_flow_spec *flow)
1721 {
1722         struct ethtool_flow_spec_container *temp, *comp;
1723         int ret = 0;
1724
1725         temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1726         if (temp == NULL)
1727                 return -ENOMEM;
1728         memcpy(&temp->fs, flow, sizeof(temp->fs));
1729
1730         gfar_invert_masks(&temp->fs);
1731         ret = gfar_check_capability(&temp->fs, priv);
1732         if (ret)
1733                 goto clean_mem;
1734         /* Link in the new element at the right @location */
1735         if (list_empty(&priv->rx_list.list)) {
1736                 ret = gfar_check_filer_hardware(priv);
1737                 if (ret != 0)
1738                         goto clean_mem;
1739                 list_add(&temp->list, &priv->rx_list.list);
1740                 goto process;
1741         } else {
1742                 list_for_each_entry(comp, &priv->rx_list.list, list) {
1743                         if (comp->fs.location > flow->location) {
1744                                 list_add_tail(&temp->list, &comp->list);
1745                                 goto process;
1746                         }
1747                         if (comp->fs.location == flow->location) {
1748                                 netdev_err(priv->ndev,
1749                                            "Rule not added: ID %d not free!\n",
1750                                            flow->location);
1751                                 ret = -EBUSY;
1752                                 goto clean_mem;
1753                         }
1754                 }
1755                 list_add_tail(&temp->list, &priv->rx_list.list);
1756         }
1757
1758 process:
1759         ret = gfar_process_filer_changes(priv);
1760         if (ret)
1761                 goto clean_list;
1762         priv->rx_list.count++;
1763         return ret;
1764
1765 clean_list:
1766         list_del(&temp->list);
1767 clean_mem:
1768         kfree(temp);
1769         return ret;
1770 }
1771
1772 static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1773 {
1774         struct ethtool_flow_spec_container *comp;
1775         u32 ret = -EINVAL;
1776
1777         if (list_empty(&priv->rx_list.list))
1778                 return ret;
1779
1780         list_for_each_entry(comp, &priv->rx_list.list, list) {
1781                 if (comp->fs.location == loc) {
1782                         list_del(&comp->list);
1783                         kfree(comp);
1784                         priv->rx_list.count--;
1785                         gfar_process_filer_changes(priv);
1786                         ret = 0;
1787                         break;
1788                 }
1789         }
1790
1791         return ret;
1792 }
1793
1794 static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1795 {
1796         struct ethtool_flow_spec_container *comp;
1797         u32 ret = -EINVAL;
1798
1799         list_for_each_entry(comp, &priv->rx_list.list, list) {
1800                 if (comp->fs.location == cmd->fs.location) {
1801                         memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1802                         gfar_invert_masks(&cmd->fs);
1803                         ret = 0;
1804                         break;
1805                 }
1806         }
1807
1808         return ret;
1809 }
1810
1811 static int gfar_get_cls_all(struct gfar_private *priv,
1812                             struct ethtool_rxnfc *cmd, u32 *rule_locs)
1813 {
1814         struct ethtool_flow_spec_container *comp;
1815         u32 i = 0;
1816
1817         list_for_each_entry(comp, &priv->rx_list.list, list) {
1818                 if (i == cmd->rule_cnt)
1819                         return -EMSGSIZE;
1820                 rule_locs[i] = comp->fs.location;
1821                 i++;
1822         }
1823
1824         cmd->data = MAX_FILER_IDX;
1825         cmd->rule_cnt = i;
1826
1827         return 0;
1828 }
1829
1830 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1831 {
1832         struct gfar_private *priv = netdev_priv(dev);
1833         int ret = 0;
1834
1835         mutex_lock(&priv->rx_queue_access);
1836
1837         switch (cmd->cmd) {
1838         case ETHTOOL_SRXFH:
1839                 ret = gfar_set_hash_opts(priv, cmd);
1840                 break;
1841         case ETHTOOL_SRXCLSRLINS:
1842                 if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1843                      cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1844                     cmd->fs.location >= MAX_FILER_IDX) {
1845                         ret = -EINVAL;
1846                         break;
1847                 }
1848                 ret = gfar_add_cls(priv, &cmd->fs);
1849                 break;
1850         case ETHTOOL_SRXCLSRLDEL:
1851                 ret = gfar_del_cls(priv, cmd->fs.location);
1852                 break;
1853         default:
1854                 ret = -EINVAL;
1855         }
1856
1857         mutex_unlock(&priv->rx_queue_access);
1858
1859         return ret;
1860 }
1861
1862 static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1863                         u32 *rule_locs)
1864 {
1865         struct gfar_private *priv = netdev_priv(dev);
1866         int ret = 0;
1867
1868         switch (cmd->cmd) {
1869         case ETHTOOL_GRXRINGS:
1870                 cmd->data = priv->num_rx_queues;
1871                 break;
1872         case ETHTOOL_GRXCLSRLCNT:
1873                 cmd->rule_cnt = priv->rx_list.count;
1874                 break;
1875         case ETHTOOL_GRXCLSRULE:
1876                 ret = gfar_get_cls(priv, cmd);
1877                 break;
1878         case ETHTOOL_GRXCLSRLALL:
1879                 ret = gfar_get_cls_all(priv, cmd, rule_locs);
1880                 break;
1881         default:
1882                 ret = -EINVAL;
1883                 break;
1884         }
1885
1886         return ret;
1887 }
1888
1889 int gfar_phc_index = -1;
1890 EXPORT_SYMBOL(gfar_phc_index);
1891
1892 static int gfar_get_ts_info(struct net_device *dev,
1893                             struct ethtool_ts_info *info)
1894 {
1895         struct gfar_private *priv = netdev_priv(dev);
1896
1897         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1898                 info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1899                                         SOF_TIMESTAMPING_SOFTWARE;
1900                 info->phc_index = -1;
1901                 return 0;
1902         }
1903         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1904                                 SOF_TIMESTAMPING_RX_HARDWARE |
1905                                 SOF_TIMESTAMPING_RAW_HARDWARE;
1906         info->phc_index = gfar_phc_index;
1907         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1908                          (1 << HWTSTAMP_TX_ON);
1909         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1910                            (1 << HWTSTAMP_FILTER_ALL);
1911         return 0;
1912 }
1913
1914 const struct ethtool_ops gfar_ethtool_ops = {
1915         .get_settings = gfar_gsettings,
1916         .set_settings = gfar_ssettings,
1917         .get_drvinfo = gfar_gdrvinfo,
1918         .get_regs_len = gfar_reglen,
1919         .get_regs = gfar_get_regs,
1920         .get_link = ethtool_op_get_link,
1921         .get_coalesce = gfar_gcoalesce,
1922         .set_coalesce = gfar_scoalesce,
1923         .get_ringparam = gfar_gringparam,
1924         .set_ringparam = gfar_sringparam,
1925         .get_pauseparam = gfar_gpauseparam,
1926         .set_pauseparam = gfar_spauseparam,
1927         .get_strings = gfar_gstrings,
1928         .get_sset_count = gfar_sset_count,
1929         .get_ethtool_stats = gfar_fill_stats,
1930         .get_msglevel = gfar_get_msglevel,
1931         .set_msglevel = gfar_set_msglevel,
1932 #ifdef CONFIG_PM
1933         .get_wol = gfar_get_wol,
1934         .set_wol = gfar_set_wol,
1935 #endif
1936         .set_rxnfc = gfar_set_nfc,
1937         .get_rxnfc = gfar_get_nfc,
1938         .get_ts_info = gfar_get_ts_info,
1939 };