drivers/net/ethernet/freescale/gianfar_ethtool.c

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