drivers/net/ethernet/freescale/gianfar_ethtool.c

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