linux/drivers/net/ethernet/freescale/gianfar_ethtool.c
<<
>>
Prefs
   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 <linux/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
  49static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  50                            u64 *buf);
  51static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
  52static int gfar_gcoalesce(struct net_device *dev,
  53                          struct ethtool_coalesce *cvals);
  54static int gfar_scoalesce(struct net_device *dev,
  55                          struct ethtool_coalesce *cvals);
  56static void gfar_gringparam(struct net_device *dev,
  57                            struct ethtool_ringparam *rvals);
  58static int gfar_sringparam(struct net_device *dev,
  59                           struct ethtool_ringparam *rvals);
  60static void gfar_gdrvinfo(struct net_device *dev,
  61                          struct ethtool_drvinfo *drvinfo);
  62
  63static const char stat_gstrings[][ETH_GSTRING_LEN] = {
  64        /* extra stats */
  65        "rx-allocation-errors",
  66        "rx-large-frame-errors",
  67        "rx-short-frame-errors",
  68        "rx-non-octet-errors",
  69        "rx-crc-errors",
  70        "rx-overrun-errors",
  71        "rx-busy-errors",
  72        "rx-babbling-errors",
  73        "rx-truncated-frames",
  74        "ethernet-bus-error",
  75        "tx-babbling-errors",
  76        "tx-underrun-errors",
  77        "tx-timeout-errors",
  78        /* rmon stats */
  79        "tx-rx-64-frames",
  80        "tx-rx-65-127-frames",
  81        "tx-rx-128-255-frames",
  82        "tx-rx-256-511-frames",
  83        "tx-rx-512-1023-frames",
  84        "tx-rx-1024-1518-frames",
  85        "tx-rx-1519-1522-good-vlan",
  86        "rx-bytes",
  87        "rx-packets",
  88        "rx-fcs-errors",
  89        "receive-multicast-packet",
  90        "receive-broadcast-packet",
  91        "rx-control-frame-packets",
  92        "rx-pause-frame-packets",
  93        "rx-unknown-op-code",
  94        "rx-alignment-error",
  95        "rx-frame-length-error",
  96        "rx-code-error",
  97        "rx-carrier-sense-error",
  98        "rx-undersize-packets",
  99        "rx-oversize-packets",
 100        "rx-fragmented-frames",
 101        "rx-jabber-frames",
 102        "rx-dropped-frames",
 103        "tx-byte-counter",
 104        "tx-packets",
 105        "tx-multicast-packets",
 106        "tx-broadcast-packets",
 107        "tx-pause-control-frames",
 108        "tx-deferral-packets",
 109        "tx-excessive-deferral-packets",
 110        "tx-single-collision-packets",
 111        "tx-multiple-collision-packets",
 112        "tx-late-collision-packets",
 113        "tx-excessive-collision-packets",
 114        "tx-total-collision",
 115        "reserved",
 116        "tx-dropped-frames",
 117        "tx-jabber-frames",
 118        "tx-fcs-errors",
 119        "tx-control-frames",
 120        "tx-oversize-frames",
 121        "tx-undersize-frames",
 122        "tx-fragmented-frames",
 123};
 124
 125/* Fill in a buffer with the strings which correspond to the
 126 * stats */
 127static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
 128{
 129        struct gfar_private *priv = netdev_priv(dev);
 130
 131        if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 132                memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
 133        else
 134                memcpy(buf, stat_gstrings,
 135                       GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
 136}
 137
 138/* Fill in an array of 64-bit statistics from various sources.
 139 * This array will be appended to the end of the ethtool_stats
 140 * structure, and returned to user space
 141 */
 142static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
 143                            u64 *buf)
 144{
 145        int i;
 146        struct gfar_private *priv = netdev_priv(dev);
 147        struct gfar __iomem *regs = priv->gfargrp[0].regs;
 148        atomic64_t *extra = (atomic64_t *)&priv->extra_stats;
 149
 150        for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 151                buf[i] = atomic64_read(&extra[i]);
 152
 153        if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
 154                u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
 155
 156                for (; i < GFAR_STATS_LEN; i++, rmon++)
 157                        buf[i] = (u64) gfar_read(rmon);
 158        }
 159}
 160
 161static int gfar_sset_count(struct net_device *dev, int sset)
 162{
 163        struct gfar_private *priv = netdev_priv(dev);
 164
 165        switch (sset) {
 166        case ETH_SS_STATS:
 167                if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 168                        return GFAR_STATS_LEN;
 169                else
 170                        return GFAR_EXTRA_STATS_LEN;
 171        default:
 172                return -EOPNOTSUPP;
 173        }
 174}
 175
 176/* Fills in the drvinfo structure with some basic info */
 177static void gfar_gdrvinfo(struct net_device *dev,
 178                          struct ethtool_drvinfo *drvinfo)
 179{
 180        strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 181        strlcpy(drvinfo->version, gfar_driver_version,
 182                sizeof(drvinfo->version));
 183        strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
 184        strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
 185}
 186
 187/* Return the length of the register structure */
 188static int gfar_reglen(struct net_device *dev)
 189{
 190        return sizeof (struct gfar);
 191}
 192
 193/* Return a dump of the GFAR register space */
 194static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 195                          void *regbuf)
 196{
 197        int i;
 198        struct gfar_private *priv = netdev_priv(dev);
 199        u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 200        u32 *buf = (u32 *) regbuf;
 201
 202        for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 203                buf[i] = gfar_read(&theregs[i]);
 204}
 205
 206/* Convert microseconds to ethernet clock ticks, which changes
 207 * depending on what speed the controller is running at */
 208static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
 209                                     unsigned int usecs)
 210{
 211        struct net_device *ndev = priv->ndev;
 212        struct phy_device *phydev = ndev->phydev;
 213        unsigned int count;
 214
 215        /* The timer is different, depending on the interface speed */
 216        switch (phydev->speed) {
 217        case SPEED_1000:
 218                count = GFAR_GBIT_TIME;
 219                break;
 220        case SPEED_100:
 221                count = GFAR_100_TIME;
 222                break;
 223        case SPEED_10:
 224        default:
 225                count = GFAR_10_TIME;
 226                break;
 227        }
 228
 229        /* Make sure we return a number greater than 0
 230         * if usecs > 0 */
 231        return (usecs * 1000 + count - 1) / count;
 232}
 233
 234/* Convert ethernet clock ticks to microseconds */
 235static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
 236                                     unsigned int ticks)
 237{
 238        struct net_device *ndev = priv->ndev;
 239        struct phy_device *phydev = ndev->phydev;
 240        unsigned int count;
 241
 242        /* The timer is different, depending on the interface speed */
 243        switch (phydev->speed) {
 244        case SPEED_1000:
 245                count = GFAR_GBIT_TIME;
 246                break;
 247        case SPEED_100:
 248                count = GFAR_100_TIME;
 249                break;
 250        case SPEED_10:
 251        default:
 252                count = GFAR_10_TIME;
 253                break;
 254        }
 255
 256        /* Make sure we return a number greater than 0 */
 257        /* if ticks is > 0 */
 258        return (ticks * count) / 1000;
 259}
 260
 261/* Get the coalescing parameters, and put them in the cvals
 262 * structure.  */
 263static int gfar_gcoalesce(struct net_device *dev,
 264                          struct ethtool_coalesce *cvals)
 265{
 266        struct gfar_private *priv = netdev_priv(dev);
 267        struct gfar_priv_rx_q *rx_queue = NULL;
 268        struct gfar_priv_tx_q *tx_queue = NULL;
 269        unsigned long rxtime;
 270        unsigned long rxcount;
 271        unsigned long txtime;
 272        unsigned long txcount;
 273
 274        if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 275                return -EOPNOTSUPP;
 276
 277        if (!dev->phydev)
 278                return -ENODEV;
 279
 280        rx_queue = priv->rx_queue[0];
 281        tx_queue = priv->tx_queue[0];
 282
 283        rxtime  = get_ictt_value(rx_queue->rxic);
 284        rxcount = get_icft_value(rx_queue->rxic);
 285        txtime  = get_ictt_value(tx_queue->txic);
 286        txcount = get_icft_value(tx_queue->txic);
 287        cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 288        cvals->rx_max_coalesced_frames = rxcount;
 289
 290        cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 291        cvals->tx_max_coalesced_frames = txcount;
 292
 293        cvals->use_adaptive_rx_coalesce = 0;
 294        cvals->use_adaptive_tx_coalesce = 0;
 295
 296        cvals->pkt_rate_low = 0;
 297        cvals->rx_coalesce_usecs_low = 0;
 298        cvals->rx_max_coalesced_frames_low = 0;
 299        cvals->tx_coalesce_usecs_low = 0;
 300        cvals->tx_max_coalesced_frames_low = 0;
 301
 302        /* When the packet rate is below pkt_rate_high but above
 303         * pkt_rate_low (both measured in packets per second) the
 304         * normal {rx,tx}_* coalescing parameters are used.
 305         */
 306
 307        /* When the packet rate is (measured in packets per second)
 308         * is above pkt_rate_high, the {rx,tx}_*_high parameters are
 309         * used.
 310         */
 311        cvals->pkt_rate_high = 0;
 312        cvals->rx_coalesce_usecs_high = 0;
 313        cvals->rx_max_coalesced_frames_high = 0;
 314        cvals->tx_coalesce_usecs_high = 0;
 315        cvals->tx_max_coalesced_frames_high = 0;
 316
 317        /* How often to do adaptive coalescing packet rate sampling,
 318         * measured in seconds.  Must not be zero.
 319         */
 320        cvals->rate_sample_interval = 0;
 321
 322        return 0;
 323}
 324
 325/* Change the coalescing values.
 326 * Both cvals->*_usecs and cvals->*_frames have to be > 0
 327 * in order for coalescing to be active
 328 */
 329static int gfar_scoalesce(struct net_device *dev,
 330                          struct ethtool_coalesce *cvals)
 331{
 332        struct gfar_private *priv = netdev_priv(dev);
 333        int i, err = 0;
 334
 335        if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 336                return -EOPNOTSUPP;
 337
 338        if (!dev->phydev)
 339                return -ENODEV;
 340
 341        /* Check the bounds of the values */
 342        if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 343                netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 344                            GFAR_MAX_COAL_USECS);
 345                return -EINVAL;
 346        }
 347
 348        if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 349                netdev_info(dev, "Coalescing is limited to %d frames\n",
 350                            GFAR_MAX_COAL_FRAMES);
 351                return -EINVAL;
 352        }
 353
 354        /* Check the bounds of the values */
 355        if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 356                netdev_info(dev, "Coalescing is limited to %d microseconds\n",
 357                            GFAR_MAX_COAL_USECS);
 358                return -EINVAL;
 359        }
 360
 361        if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 362                netdev_info(dev, "Coalescing is limited to %d frames\n",
 363                            GFAR_MAX_COAL_FRAMES);
 364                return -EINVAL;
 365        }
 366
 367        while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 368                cpu_relax();
 369
 370        /* Set up rx coalescing */
 371        if ((cvals->rx_coalesce_usecs == 0) ||
 372            (cvals->rx_max_coalesced_frames == 0)) {
 373                for (i = 0; i < priv->num_rx_queues; i++)
 374                        priv->rx_queue[i]->rxcoalescing = 0;
 375        } else {
 376                for (i = 0; i < priv->num_rx_queues; i++)
 377                        priv->rx_queue[i]->rxcoalescing = 1;
 378        }
 379
 380        for (i = 0; i < priv->num_rx_queues; i++) {
 381                priv->rx_queue[i]->rxic = mk_ic_value(
 382                        cvals->rx_max_coalesced_frames,
 383                        gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 384        }
 385
 386        /* Set up tx coalescing */
 387        if ((cvals->tx_coalesce_usecs == 0) ||
 388            (cvals->tx_max_coalesced_frames == 0)) {
 389                for (i = 0; i < priv->num_tx_queues; i++)
 390                        priv->tx_queue[i]->txcoalescing = 0;
 391        } else {
 392                for (i = 0; i < priv->num_tx_queues; i++)
 393                        priv->tx_queue[i]->txcoalescing = 1;
 394        }
 395
 396        for (i = 0; i < priv->num_tx_queues; i++) {
 397                priv->tx_queue[i]->txic = mk_ic_value(
 398                        cvals->tx_max_coalesced_frames,
 399                        gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 400        }
 401
 402        if (dev->flags & IFF_UP) {
 403                stop_gfar(dev);
 404                err = startup_gfar(dev);
 405        } else {
 406                gfar_mac_reset(priv);
 407        }
 408
 409        clear_bit_unlock(GFAR_RESETTING, &priv->state);
 410
 411        return err;
 412}
 413
 414/* Fills in rvals with the current ring parameters.  Currently,
 415 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 416 * jumbo are ignored by the driver */
 417static void gfar_gringparam(struct net_device *dev,
 418                            struct ethtool_ringparam *rvals)
 419{
 420        struct gfar_private *priv = netdev_priv(dev);
 421        struct gfar_priv_tx_q *tx_queue = NULL;
 422        struct gfar_priv_rx_q *rx_queue = NULL;
 423
 424        tx_queue = priv->tx_queue[0];
 425        rx_queue = priv->rx_queue[0];
 426
 427        rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 428        rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 429        rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 430        rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 431
 432        /* Values changeable by the user.  The valid values are
 433         * in the range 1 to the "*_max_pending" counterpart above.
 434         */
 435        rvals->rx_pending = rx_queue->rx_ring_size;
 436        rvals->rx_mini_pending = rx_queue->rx_ring_size;
 437        rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 438        rvals->tx_pending = tx_queue->tx_ring_size;
 439}
 440
 441/* Change the current ring parameters, stopping the controller if
 442 * necessary so that we don't mess things up while we're in motion.
 443 */
 444static int gfar_sringparam(struct net_device *dev,
 445                           struct ethtool_ringparam *rvals)
 446{
 447        struct gfar_private *priv = netdev_priv(dev);
 448        int err = 0, i;
 449
 450        if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 451                return -EINVAL;
 452
 453        if (!is_power_of_2(rvals->rx_pending)) {
 454                netdev_err(dev, "Ring sizes must be a power of 2\n");
 455                return -EINVAL;
 456        }
 457
 458        if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 459                return -EINVAL;
 460
 461        if (!is_power_of_2(rvals->tx_pending)) {
 462                netdev_err(dev, "Ring sizes must be a power of 2\n");
 463                return -EINVAL;
 464        }
 465
 466        while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 467                cpu_relax();
 468
 469        if (dev->flags & IFF_UP)
 470                stop_gfar(dev);
 471
 472        /* Change the sizes */
 473        for (i = 0; i < priv->num_rx_queues; i++)
 474                priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 475
 476        for (i = 0; i < priv->num_tx_queues; i++)
 477                priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 478
 479        /* Rebuild the rings with the new size */
 480        if (dev->flags & IFF_UP)
 481                err = startup_gfar(dev);
 482
 483        clear_bit_unlock(GFAR_RESETTING, &priv->state);
 484
 485        return err;
 486}
 487
 488static void gfar_gpauseparam(struct net_device *dev,
 489                             struct ethtool_pauseparam *epause)
 490{
 491        struct gfar_private *priv = netdev_priv(dev);
 492
 493        epause->autoneg = !!priv->pause_aneg_en;
 494        epause->rx_pause = !!priv->rx_pause_en;
 495        epause->tx_pause = !!priv->tx_pause_en;
 496}
 497
 498static int gfar_spauseparam(struct net_device *dev,
 499                            struct ethtool_pauseparam *epause)
 500{
 501        struct gfar_private *priv = netdev_priv(dev);
 502        struct phy_device *phydev = dev->phydev;
 503        struct gfar __iomem *regs = priv->gfargrp[0].regs;
 504        u32 oldadv, newadv;
 505
 506        if (!phydev)
 507                return -ENODEV;
 508
 509        if (!(phydev->supported & SUPPORTED_Pause) ||
 510            (!(phydev->supported & SUPPORTED_Asym_Pause) &&
 511             (epause->rx_pause != epause->tx_pause)))
 512                return -EINVAL;
 513
 514        priv->rx_pause_en = priv->tx_pause_en = 0;
 515        if (epause->rx_pause) {
 516                priv->rx_pause_en = 1;
 517
 518                if (epause->tx_pause) {
 519                        priv->tx_pause_en = 1;
 520                        /* FLOW_CTRL_RX & TX */
 521                        newadv = ADVERTISED_Pause;
 522                } else  /* FLOW_CTLR_RX */
 523                        newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
 524        } else if (epause->tx_pause) {
 525                priv->tx_pause_en = 1;
 526                /* FLOW_CTLR_TX */
 527                newadv = ADVERTISED_Asym_Pause;
 528        } else
 529                newadv = 0;
 530
 531        if (epause->autoneg)
 532                priv->pause_aneg_en = 1;
 533        else
 534                priv->pause_aneg_en = 0;
 535
 536        oldadv = phydev->advertising &
 537                (ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 538        if (oldadv != newadv) {
 539                phydev->advertising &=
 540                        ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
 541                phydev->advertising |= newadv;
 542                if (phydev->autoneg)
 543                        /* inform link partner of our
 544                         * new flow ctrl settings
 545                         */
 546                        return phy_start_aneg(phydev);
 547
 548                if (!epause->autoneg) {
 549                        u32 tempval;
 550                        tempval = gfar_read(&regs->maccfg1);
 551                        tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
 552
 553                        priv->tx_actual_en = 0;
 554                        if (priv->tx_pause_en) {
 555                                priv->tx_actual_en = 1;
 556                                tempval |= MACCFG1_TX_FLOW;
 557                        }
 558
 559                        if (priv->rx_pause_en)
 560                                tempval |= MACCFG1_RX_FLOW;
 561                        gfar_write(&regs->maccfg1, tempval);
 562                }
 563        }
 564
 565        return 0;
 566}
 567
 568int gfar_set_features(struct net_device *dev, netdev_features_t features)
 569{
 570        netdev_features_t changed = dev->features ^ features;
 571        struct gfar_private *priv = netdev_priv(dev);
 572        int err = 0;
 573
 574        if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
 575                         NETIF_F_RXCSUM)))
 576                return 0;
 577
 578        while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
 579                cpu_relax();
 580
 581        dev->features = features;
 582
 583        if (dev->flags & IFF_UP) {
 584                /* Now we take down the rings to rebuild them */
 585                stop_gfar(dev);
 586                err = startup_gfar(dev);
 587        } else {
 588                gfar_mac_reset(priv);
 589        }
 590
 591        clear_bit_unlock(GFAR_RESETTING, &priv->state);
 592
 593        return err;
 594}
 595
 596static uint32_t gfar_get_msglevel(struct net_device *dev)
 597{
 598        struct gfar_private *priv = netdev_priv(dev);
 599
 600        return priv->msg_enable;
 601}
 602
 603static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 604{
 605        struct gfar_private *priv = netdev_priv(dev);
 606
 607        priv->msg_enable = data;
 608}
 609
 610#ifdef CONFIG_PM
 611static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 612{
 613        struct gfar_private *priv = netdev_priv(dev);
 614
 615        wol->supported = 0;
 616        wol->wolopts = 0;
 617
 618        if (priv->wol_supported & GFAR_WOL_MAGIC)
 619                wol->supported |= WAKE_MAGIC;
 620
 621        if (priv->wol_supported & GFAR_WOL_FILER_UCAST)
 622                wol->supported |= WAKE_UCAST;
 623
 624        if (priv->wol_opts & GFAR_WOL_MAGIC)
 625                wol->wolopts |= WAKE_MAGIC;
 626
 627        if (priv->wol_opts & GFAR_WOL_FILER_UCAST)
 628                wol->wolopts |= WAKE_UCAST;
 629}
 630
 631static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 632{
 633        struct gfar_private *priv = netdev_priv(dev);
 634        u16 wol_opts = 0;
 635        int err;
 636
 637        if (!priv->wol_supported && wol->wolopts)
 638                return -EINVAL;
 639
 640        if (wol->wolopts & ~(WAKE_MAGIC | WAKE_UCAST))
 641                return -EINVAL;
 642
 643        if (wol->wolopts & WAKE_MAGIC) {
 644                wol_opts |= GFAR_WOL_MAGIC;
 645        } else {
 646                if (wol->wolopts & WAKE_UCAST)
 647                        wol_opts |= GFAR_WOL_FILER_UCAST;
 648        }
 649
 650        wol_opts &= priv->wol_supported;
 651        priv->wol_opts = 0;
 652
 653        err = device_set_wakeup_enable(priv->dev, wol_opts);
 654        if (err)
 655                return err;
 656
 657        priv->wol_opts = wol_opts;
 658
 659        return 0;
 660}
 661#endif
 662
 663static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 664{
 665        u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 666
 667        if (ethflow & RXH_L2DA) {
 668                fcr = RQFCR_PID_DAH | RQFCR_CMP_NOMATCH |
 669                      RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 670                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 671                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 672                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 673                priv->cur_filer_idx = priv->cur_filer_idx - 1;
 674
 675                fcr = RQFCR_PID_DAL | 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
 683        if (ethflow & RXH_VLAN) {
 684                fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 685                      RQFCR_AND | RQFCR_HASHTBL_0;
 686                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 687                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 688                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 689                priv->cur_filer_idx = priv->cur_filer_idx - 1;
 690        }
 691
 692        if (ethflow & RXH_IP_SRC) {
 693                fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 694                      RQFCR_AND | RQFCR_HASHTBL_0;
 695                priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
 696                priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
 697                gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 698                priv->cur_filer_idx = priv->cur_filer_idx - 1;
 699        }
 700
 701        if (ethflow & (RXH_IP_DST)) {
 702                fcr = RQFCR_PID_DIA | 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_L3_PROTO) {
 711                fcr = RQFCR_PID_L4P | 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_L4_B_0_1) {
 720                fcr = RQFCR_PID_SPT | 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_2_3) {
 729                fcr = RQFCR_PID_DPT | 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
 738static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
 739                                       u64 class)
 740{
 741        unsigned int last_rule_idx = priv->cur_filer_idx;
 742        unsigned int cmp_rqfpr;
 743        unsigned int *local_rqfpr;
 744        unsigned int *local_rqfcr;
 745        int i = 0x0, k = 0x0;
 746        int j = MAX_FILER_IDX, l = 0x0;
 747        int ret = 1;
 748
 749        local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 750                                    GFP_KERNEL);
 751        local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
 752                                    GFP_KERNEL);
 753        if (!local_rqfpr || !local_rqfcr) {
 754                ret = 0;
 755                goto err;
 756        }
 757
 758        switch (class) {
 759        case TCP_V4_FLOW:
 760                cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 761                break;
 762        case UDP_V4_FLOW:
 763                cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 764                break;
 765        case TCP_V6_FLOW:
 766                cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 767                break;
 768        case UDP_V6_FLOW:
 769                cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 770                break;
 771        default:
 772                netdev_err(priv->ndev,
 773                           "Right now this class is not supported\n");
 774                ret = 0;
 775                goto err;
 776        }
 777
 778        for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 779                local_rqfpr[j] = priv->ftp_rqfpr[i];
 780                local_rqfcr[j] = priv->ftp_rqfcr[i];
 781                j--;
 782                if ((priv->ftp_rqfcr[i] ==
 783                     (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
 784                    (priv->ftp_rqfpr[i] == cmp_rqfpr))
 785                        break;
 786        }
 787
 788        if (i == MAX_FILER_IDX + 1) {
 789                netdev_err(priv->ndev,
 790                           "No parse rule found, can't create hash rules\n");
 791                ret = 0;
 792                goto err;
 793        }
 794
 795        /* If a match was found, then it begins the starting of a cluster rule
 796         * if it was already programmed, we need to overwrite these rules
 797         */
 798        for (l = i+1; l < MAX_FILER_IDX; l++) {
 799                if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 800                    !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
 801                        priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 802                                             RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 803                        priv->ftp_rqfpr[l] = FPR_FILER_MASK;
 804                        gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
 805                                         priv->ftp_rqfpr[l]);
 806                        break;
 807                }
 808
 809                if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
 810                        (priv->ftp_rqfcr[l] & RQFCR_AND))
 811                        continue;
 812                else {
 813                        local_rqfpr[j] = priv->ftp_rqfpr[l];
 814                        local_rqfcr[j] = priv->ftp_rqfcr[l];
 815                        j--;
 816                }
 817        }
 818
 819        priv->cur_filer_idx = l - 1;
 820        last_rule_idx = l;
 821
 822        /* hash rules */
 823        ethflow_to_filer_rules(priv, ethflow);
 824
 825        /* Write back the popped out rules again */
 826        for (k = j+1; k < MAX_FILER_IDX; k++) {
 827                priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 828                priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 829                gfar_write_filer(priv, priv->cur_filer_idx,
 830                                 local_rqfcr[k], local_rqfpr[k]);
 831                if (!priv->cur_filer_idx)
 832                        break;
 833                priv->cur_filer_idx = priv->cur_filer_idx - 1;
 834        }
 835
 836err:
 837        kfree(local_rqfcr);
 838        kfree(local_rqfpr);
 839        return ret;
 840}
 841
 842static int gfar_set_hash_opts(struct gfar_private *priv,
 843                              struct ethtool_rxnfc *cmd)
 844{
 845        /* write the filer rules here */
 846        if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 847                return -EINVAL;
 848
 849        return 0;
 850}
 851
 852static int gfar_check_filer_hardware(struct gfar_private *priv)
 853{
 854        struct gfar __iomem *regs = priv->gfargrp[0].regs;
 855        u32 i;
 856
 857        /* Check if we are in FIFO mode */
 858        i = gfar_read(&regs->ecntrl);
 859        i &= ECNTRL_FIFM;
 860        if (i == ECNTRL_FIFM) {
 861                netdev_notice(priv->ndev, "Interface in FIFO mode\n");
 862                i = gfar_read(&regs->rctrl);
 863                i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
 864                if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
 865                        netdev_info(priv->ndev,
 866                                    "Receive Queue Filtering enabled\n");
 867                } else {
 868                        netdev_warn(priv->ndev,
 869                                    "Receive Queue Filtering disabled\n");
 870                        return -EOPNOTSUPP;
 871                }
 872        }
 873        /* Or in standard mode */
 874        else {
 875                i = gfar_read(&regs->rctrl);
 876                i &= RCTRL_PRSDEP_MASK;
 877                if (i == RCTRL_PRSDEP_MASK) {
 878                        netdev_info(priv->ndev,
 879                                    "Receive Queue Filtering enabled\n");
 880                } else {
 881                        netdev_warn(priv->ndev,
 882                                    "Receive Queue Filtering disabled\n");
 883                        return -EOPNOTSUPP;
 884                }
 885        }
 886
 887        /* Sets the properties for arbitrary filer rule
 888         * to the first 4 Layer 4 Bytes
 889         */
 890        gfar_write(&regs->rbifx, 0xC0C1C2C3);
 891        return 0;
 892}
 893
 894/* Write a mask to filer cache */
 895static void gfar_set_mask(u32 mask, struct filer_table *tab)
 896{
 897        tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
 898        tab->fe[tab->index].prop = mask;
 899        tab->index++;
 900}
 901
 902/* Sets parse bits (e.g. IP or TCP) */
 903static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
 904{
 905        gfar_set_mask(mask, tab);
 906        tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
 907                                   RQFCR_AND;
 908        tab->fe[tab->index].prop = value;
 909        tab->index++;
 910}
 911
 912static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
 913                                       struct filer_table *tab)
 914{
 915        gfar_set_mask(mask, tab);
 916        tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
 917        tab->fe[tab->index].prop = value;
 918        tab->index++;
 919}
 920
 921/* For setting a tuple of value and mask of type flag
 922 * Example:
 923 * IP-Src = 10.0.0.0/255.0.0.0
 924 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 925 *
 926 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 927 * For a don't care mask it gives us a 0
 928 *
 929 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 930 * and MAC stuff on an upper level (due to missing information on this level).
 931 * For these guys we can discard them if they are value=0 and mask=0.
 932 *
 933 * Further the all masks are one-padded for better hardware efficiency.
 934 */
 935static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
 936                               struct filer_table *tab)
 937{
 938        switch (flag) {
 939                /* 3bit */
 940        case RQFCR_PID_PRI:
 941                if (!(value | mask))
 942                        return;
 943                mask |= RQFCR_PID_PRI_MASK;
 944                break;
 945                /* 8bit */
 946        case RQFCR_PID_L4P:
 947        case RQFCR_PID_TOS:
 948                if (!~(mask | RQFCR_PID_L4P_MASK))
 949                        return;
 950                if (!mask)
 951                        mask = ~0;
 952                else
 953                        mask |= RQFCR_PID_L4P_MASK;
 954                break;
 955                /* 12bit */
 956        case RQFCR_PID_VID:
 957                if (!(value | mask))
 958                        return;
 959                mask |= RQFCR_PID_VID_MASK;
 960                break;
 961                /* 16bit */
 962        case RQFCR_PID_DPT:
 963        case RQFCR_PID_SPT:
 964        case RQFCR_PID_ETY:
 965                if (!~(mask | RQFCR_PID_PORT_MASK))
 966                        return;
 967                if (!mask)
 968                        mask = ~0;
 969                else
 970                        mask |= RQFCR_PID_PORT_MASK;
 971                break;
 972                /* 24bit */
 973        case RQFCR_PID_DAH:
 974        case RQFCR_PID_DAL:
 975        case RQFCR_PID_SAH:
 976        case RQFCR_PID_SAL:
 977                if (!(value | mask))
 978                        return;
 979                mask |= RQFCR_PID_MAC_MASK;
 980                break;
 981                /* for all real 32bit masks */
 982        default:
 983                if (!~mask)
 984                        return;
 985                if (!mask)
 986                        mask = ~0;
 987                break;
 988        }
 989        gfar_set_general_attribute(value, mask, flag, tab);
 990}
 991
 992/* Translates value and mask for UDP, TCP or SCTP */
 993static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
 994                              struct ethtool_tcpip4_spec *mask,
 995                              struct filer_table *tab)
 996{
 997        gfar_set_attribute(be32_to_cpu(value->ip4src),
 998                           be32_to_cpu(mask->ip4src),
 999                           RQFCR_PID_SIA, tab);
1000        gfar_set_attribute(be32_to_cpu(value->ip4dst),
1001                           be32_to_cpu(mask->ip4dst),
1002                           RQFCR_PID_DIA, tab);
1003        gfar_set_attribute(be16_to_cpu(value->pdst),
1004                           be16_to_cpu(mask->pdst),
1005                           RQFCR_PID_DPT, tab);
1006        gfar_set_attribute(be16_to_cpu(value->psrc),
1007                           be16_to_cpu(mask->psrc),
1008                           RQFCR_PID_SPT, tab);
1009        gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1010}
1011
1012/* Translates value and mask for RAW-IP4 */
1013static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
1014                             struct ethtool_usrip4_spec *mask,
1015                             struct filer_table *tab)
1016{
1017        gfar_set_attribute(be32_to_cpu(value->ip4src),
1018                           be32_to_cpu(mask->ip4src),
1019                           RQFCR_PID_SIA, tab);
1020        gfar_set_attribute(be32_to_cpu(value->ip4dst),
1021                           be32_to_cpu(mask->ip4dst),
1022                           RQFCR_PID_DIA, tab);
1023        gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
1024        gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
1025        gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
1026                           be32_to_cpu(mask->l4_4_bytes),
1027                           RQFCR_PID_ARB, tab);
1028
1029}
1030
1031/* Translates value and mask for ETHER spec */
1032static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
1033                           struct filer_table *tab)
1034{
1035        u32 upper_temp_mask = 0;
1036        u32 lower_temp_mask = 0;
1037
1038        /* Source address */
1039        if (!is_broadcast_ether_addr(mask->h_source)) {
1040                if (is_zero_ether_addr(mask->h_source)) {
1041                        upper_temp_mask = 0xFFFFFFFF;
1042                        lower_temp_mask = 0xFFFFFFFF;
1043                } else {
1044                        upper_temp_mask = mask->h_source[0] << 16 |
1045                                          mask->h_source[1] << 8  |
1046                                          mask->h_source[2];
1047                        lower_temp_mask = mask->h_source[3] << 16 |
1048                                          mask->h_source[4] << 8  |
1049                                          mask->h_source[5];
1050                }
1051                /* Upper 24bit */
1052                gfar_set_attribute(value->h_source[0] << 16 |
1053                                   value->h_source[1] << 8  |
1054                                   value->h_source[2],
1055                                   upper_temp_mask, RQFCR_PID_SAH, tab);
1056                /* And the same for the lower part */
1057                gfar_set_attribute(value->h_source[3] << 16 |
1058                                   value->h_source[4] << 8  |
1059                                   value->h_source[5],
1060                                   lower_temp_mask, RQFCR_PID_SAL, tab);
1061        }
1062        /* Destination address */
1063        if (!is_broadcast_ether_addr(mask->h_dest)) {
1064                /* Special for destination is limited broadcast */
1065                if ((is_broadcast_ether_addr(value->h_dest) &&
1066                    is_zero_ether_addr(mask->h_dest))) {
1067                        gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
1068                } else {
1069                        if (is_zero_ether_addr(mask->h_dest)) {
1070                                upper_temp_mask = 0xFFFFFFFF;
1071                                lower_temp_mask = 0xFFFFFFFF;
1072                        } else {
1073                                upper_temp_mask = mask->h_dest[0] << 16 |
1074                                                  mask->h_dest[1] << 8  |
1075                                                  mask->h_dest[2];
1076                                lower_temp_mask = mask->h_dest[3] << 16 |
1077                                                  mask->h_dest[4] << 8  |
1078                                                  mask->h_dest[5];
1079                        }
1080
1081                        /* Upper 24bit */
1082                        gfar_set_attribute(value->h_dest[0] << 16 |
1083                                           value->h_dest[1] << 8  |
1084                                           value->h_dest[2],
1085                                           upper_temp_mask, RQFCR_PID_DAH, tab);
1086                        /* And the same for the lower part */
1087                        gfar_set_attribute(value->h_dest[3] << 16 |
1088                                           value->h_dest[4] << 8  |
1089                                           value->h_dest[5],
1090                                           lower_temp_mask, RQFCR_PID_DAL, tab);
1091                }
1092        }
1093
1094        gfar_set_attribute(be16_to_cpu(value->h_proto),
1095                           be16_to_cpu(mask->h_proto),
1096                           RQFCR_PID_ETY, tab);
1097}
1098
1099static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
1100{
1101        return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
1102}
1103
1104static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
1105{
1106        return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
1107}
1108
1109static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
1110{
1111        return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
1112}
1113
1114static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
1115{
1116        return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
1117}
1118
1119static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
1120{
1121        return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1122                VLAN_PRIO_SHIFT;
1123}
1124
1125static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
1126{
1127        return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
1128                VLAN_PRIO_SHIFT;
1129}
1130
1131/* Convert a rule to binary filter format of gianfar */
1132static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
1133                                 struct filer_table *tab)
1134{
1135        u32 vlan = 0, vlan_mask = 0;
1136        u32 id = 0, id_mask = 0;
1137        u32 cfi = 0, cfi_mask = 0;
1138        u32 prio = 0, prio_mask = 0;
1139        u32 old_index = tab->index;
1140
1141        /* Check if vlan is wanted */
1142        if ((rule->flow_type & FLOW_EXT) &&
1143            (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
1144                if (!rule->m_ext.vlan_tci)
1145                        rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);
1146
1147                vlan = RQFPR_VLN;
1148                vlan_mask = RQFPR_VLN;
1149
1150                /* Separate the fields */
1151                id = vlan_tci_vid(rule);
1152                id_mask = vlan_tci_vidm(rule);
1153                cfi = vlan_tci_cfi(rule);
1154                cfi_mask = vlan_tci_cfim(rule);
1155                prio = vlan_tci_prio(rule);
1156                prio_mask = vlan_tci_priom(rule);
1157
1158                if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
1159                        vlan |= RQFPR_CFI;
1160                        vlan_mask |= RQFPR_CFI;
1161                } else if (cfi != VLAN_TAG_PRESENT &&
1162                           cfi_mask == VLAN_TAG_PRESENT) {
1163                        vlan_mask |= RQFPR_CFI;
1164                }
1165        }
1166
1167        switch (rule->flow_type & ~FLOW_EXT) {
1168        case TCP_V4_FLOW:
1169                gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
1170                                    RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
1171                gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
1172                                  &rule->m_u.tcp_ip4_spec, tab);
1173                break;
1174        case UDP_V4_FLOW:
1175                gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
1176                                    RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
1177                gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
1178                                  &rule->m_u.udp_ip4_spec, tab);
1179                break;
1180        case SCTP_V4_FLOW:
1181                gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1182                                    tab);
1183                gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
1184                gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
1185                                  (struct ethtool_tcpip4_spec *)&rule->m_u,
1186                                  tab);
1187                break;
1188        case IP_USER_FLOW:
1189                gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
1190                                    tab);
1191                gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
1192                                 (struct ethtool_usrip4_spec *) &rule->m_u,
1193                                 tab);
1194                break;
1195        case ETHER_FLOW:
1196                if (vlan)
1197                        gfar_set_parse_bits(vlan, vlan_mask, tab);
1198                gfar_set_ether((struct ethhdr *) &rule->h_u,
1199                               (struct ethhdr *) &rule->m_u, tab);
1200                break;
1201        default:
1202                return -1;
1203        }
1204
1205        /* Set the vlan attributes in the end */
1206        if (vlan) {
1207                gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
1208                gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
1209        }
1210
1211        /* If there has been nothing written till now, it must be a default */
1212        if (tab->index == old_index) {
1213                gfar_set_mask(0xFFFFFFFF, tab);
1214                tab->fe[tab->index].ctrl = 0x20;
1215                tab->fe[tab->index].prop = 0x0;
1216                tab->index++;
1217        }
1218
1219        /* Remove last AND */
1220        tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);
1221
1222        /* Specify which queue to use or to drop */
1223        if (rule->ring_cookie == RX_CLS_FLOW_DISC)
1224                tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
1225        else
1226                tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);
1227
1228        /* Only big enough entries can be clustered */
1229        if (tab->index > (old_index + 2)) {
1230                tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
1231                tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
1232        }
1233
1234        /* In rare cases the cache can be full while there is
1235         * free space in hw
1236         */
1237        if (tab->index > MAX_FILER_CACHE_IDX - 1)
1238                return -EBUSY;
1239
1240        return 0;
1241}
1242
1243/* Write the bit-pattern from software's buffer to hardware registers */
1244static int gfar_write_filer_table(struct gfar_private *priv,
1245                                  struct filer_table *tab)
1246{
1247        u32 i = 0;
1248        if (tab->index > MAX_FILER_IDX - 1)
1249                return -EBUSY;
1250
1251        /* Fill regular entries */
1252        for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
1253                gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
1254        /* Fill the rest with fall-troughs */
1255        for (; i < MAX_FILER_IDX; i++)
1256                gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
1257        /* Last entry must be default accept
1258         * because that's what people expect
1259         */
1260        gfar_write_filer(priv, i, 0x20, 0x0);
1261
1262        return 0;
1263}
1264
1265static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
1266                                 struct gfar_private *priv)
1267{
1268
1269        if (flow->flow_type & FLOW_EXT) {
1270                if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
1271                        netdev_warn(priv->ndev,
1272                                    "User-specific data not supported!\n");
1273                if (~flow->m_ext.vlan_etype)
1274                        netdev_warn(priv->ndev,
1275                                    "VLAN-etype not supported!\n");
1276        }
1277        if (flow->flow_type == IP_USER_FLOW)
1278                if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
1279                        netdev_warn(priv->ndev,
1280                                    "IP-Version differing from IPv4 not supported!\n");
1281
1282        return 0;
1283}
1284
1285static int gfar_process_filer_changes(struct gfar_private *priv)
1286{
1287        struct ethtool_flow_spec_container *j;
1288        struct filer_table *tab;
1289        s32 ret = 0;
1290
1291        /* So index is set to zero, too! */
1292        tab = kzalloc(sizeof(*tab), GFP_KERNEL);
1293        if (tab == NULL)
1294                return -ENOMEM;
1295
1296        /* Now convert the existing filer data from flow_spec into
1297         * filer tables binary format
1298         */
1299        list_for_each_entry(j, &priv->rx_list.list, list) {
1300                ret = gfar_convert_to_filer(&j->fs, tab);
1301                if (ret == -EBUSY) {
1302                        netdev_err(priv->ndev,
1303                                   "Rule not added: No free space!\n");
1304                        goto end;
1305                }
1306                if (ret == -1) {
1307                        netdev_err(priv->ndev,
1308                                   "Rule not added: Unsupported Flow-type!\n");
1309                        goto end;
1310                }
1311        }
1312
1313        /* Write everything to hardware */
1314        ret = gfar_write_filer_table(priv, tab);
1315        if (ret == -EBUSY) {
1316                netdev_err(priv->ndev, "Rule not added: No free space!\n");
1317                goto end;
1318        }
1319
1320end:
1321        kfree(tab);
1322        return ret;
1323}
1324
1325static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
1326{
1327        u32 i = 0;
1328
1329        for (i = 0; i < sizeof(flow->m_u); i++)
1330                flow->m_u.hdata[i] ^= 0xFF;
1331
1332        flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
1333        flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
1334        flow->m_ext.data[0] ^= cpu_to_be32(~0);
1335        flow->m_ext.data[1] ^= cpu_to_be32(~0);
1336}
1337
1338static int gfar_add_cls(struct gfar_private *priv,
1339                        struct ethtool_rx_flow_spec *flow)
1340{
1341        struct ethtool_flow_spec_container *temp, *comp;
1342        int ret = 0;
1343
1344        temp = kmalloc(sizeof(*temp), GFP_KERNEL);
1345        if (temp == NULL)
1346                return -ENOMEM;
1347        memcpy(&temp->fs, flow, sizeof(temp->fs));
1348
1349        gfar_invert_masks(&temp->fs);
1350        ret = gfar_check_capability(&temp->fs, priv);
1351        if (ret)
1352                goto clean_mem;
1353        /* Link in the new element at the right @location */
1354        if (list_empty(&priv->rx_list.list)) {
1355                ret = gfar_check_filer_hardware(priv);
1356                if (ret != 0)
1357                        goto clean_mem;
1358                list_add(&temp->list, &priv->rx_list.list);
1359                goto process;
1360        } else {
1361                list_for_each_entry(comp, &priv->rx_list.list, list) {
1362                        if (comp->fs.location > flow->location) {
1363                                list_add_tail(&temp->list, &comp->list);
1364                                goto process;
1365                        }
1366                        if (comp->fs.location == flow->location) {
1367                                netdev_err(priv->ndev,
1368                                           "Rule not added: ID %d not free!\n",
1369                                           flow->location);
1370                                ret = -EBUSY;
1371                                goto clean_mem;
1372                        }
1373                }
1374                list_add_tail(&temp->list, &priv->rx_list.list);
1375        }
1376
1377process:
1378        priv->rx_list.count++;
1379        ret = gfar_process_filer_changes(priv);
1380        if (ret)
1381                goto clean_list;
1382        return ret;
1383
1384clean_list:
1385        priv->rx_list.count--;
1386        list_del(&temp->list);
1387clean_mem:
1388        kfree(temp);
1389        return ret;
1390}
1391
1392static int gfar_del_cls(struct gfar_private *priv, u32 loc)
1393{
1394        struct ethtool_flow_spec_container *comp;
1395        u32 ret = -EINVAL;
1396
1397        if (list_empty(&priv->rx_list.list))
1398                return ret;
1399
1400        list_for_each_entry(comp, &priv->rx_list.list, list) {
1401                if (comp->fs.location == loc) {
1402                        list_del(&comp->list);
1403                        kfree(comp);
1404                        priv->rx_list.count--;
1405                        gfar_process_filer_changes(priv);
1406                        ret = 0;
1407                        break;
1408                }
1409        }
1410
1411        return ret;
1412}
1413
1414static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
1415{
1416        struct ethtool_flow_spec_container *comp;
1417        u32 ret = -EINVAL;
1418
1419        list_for_each_entry(comp, &priv->rx_list.list, list) {
1420                if (comp->fs.location == cmd->fs.location) {
1421                        memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
1422                        gfar_invert_masks(&cmd->fs);
1423                        ret = 0;
1424                        break;
1425                }
1426        }
1427
1428        return ret;
1429}
1430
1431static int gfar_get_cls_all(struct gfar_private *priv,
1432                            struct ethtool_rxnfc *cmd, u32 *rule_locs)
1433{
1434        struct ethtool_flow_spec_container *comp;
1435        u32 i = 0;
1436
1437        list_for_each_entry(comp, &priv->rx_list.list, list) {
1438                if (i == cmd->rule_cnt)
1439                        return -EMSGSIZE;
1440                rule_locs[i] = comp->fs.location;
1441                i++;
1442        }
1443
1444        cmd->data = MAX_FILER_IDX;
1445        cmd->rule_cnt = i;
1446
1447        return 0;
1448}
1449
1450static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
1451{
1452        struct gfar_private *priv = netdev_priv(dev);
1453        int ret = 0;
1454
1455        if (test_bit(GFAR_RESETTING, &priv->state))
1456                return -EBUSY;
1457
1458        mutex_lock(&priv->rx_queue_access);
1459
1460        switch (cmd->cmd) {
1461        case ETHTOOL_SRXFH:
1462                ret = gfar_set_hash_opts(priv, cmd);
1463                break;
1464        case ETHTOOL_SRXCLSRLINS:
1465                if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
1466                     cmd->fs.ring_cookie >= priv->num_rx_queues) ||
1467                    cmd->fs.location >= MAX_FILER_IDX) {
1468                        ret = -EINVAL;
1469                        break;
1470                }
1471                ret = gfar_add_cls(priv, &cmd->fs);
1472                break;
1473        case ETHTOOL_SRXCLSRLDEL:
1474                ret = gfar_del_cls(priv, cmd->fs.location);
1475                break;
1476        default:
1477                ret = -EINVAL;
1478        }
1479
1480        mutex_unlock(&priv->rx_queue_access);
1481
1482        return ret;
1483}
1484
1485static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
1486                        u32 *rule_locs)
1487{
1488        struct gfar_private *priv = netdev_priv(dev);
1489        int ret = 0;
1490
1491        switch (cmd->cmd) {
1492        case ETHTOOL_GRXRINGS:
1493                cmd->data = priv->num_rx_queues;
1494                break;
1495        case ETHTOOL_GRXCLSRLCNT:
1496                cmd->rule_cnt = priv->rx_list.count;
1497                break;
1498        case ETHTOOL_GRXCLSRULE:
1499                ret = gfar_get_cls(priv, cmd);
1500                break;
1501        case ETHTOOL_GRXCLSRLALL:
1502                ret = gfar_get_cls_all(priv, cmd, rule_locs);
1503                break;
1504        default:
1505                ret = -EINVAL;
1506                break;
1507        }
1508
1509        return ret;
1510}
1511
1512int gfar_phc_index = -1;
1513EXPORT_SYMBOL(gfar_phc_index);
1514
1515static int gfar_get_ts_info(struct net_device *dev,
1516                            struct ethtool_ts_info *info)
1517{
1518        struct gfar_private *priv = netdev_priv(dev);
1519
1520        if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
1521                info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
1522                                        SOF_TIMESTAMPING_SOFTWARE;
1523                info->phc_index = -1;
1524                return 0;
1525        }
1526        info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
1527                                SOF_TIMESTAMPING_RX_HARDWARE |
1528                                SOF_TIMESTAMPING_RAW_HARDWARE;
1529        info->phc_index = gfar_phc_index;
1530        info->tx_types = (1 << HWTSTAMP_TX_OFF) |
1531                         (1 << HWTSTAMP_TX_ON);
1532        info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
1533                           (1 << HWTSTAMP_FILTER_ALL);
1534        return 0;
1535}
1536
1537const struct ethtool_ops gfar_ethtool_ops = {
1538        .get_drvinfo = gfar_gdrvinfo,
1539        .get_regs_len = gfar_reglen,
1540        .get_regs = gfar_get_regs,
1541        .get_link = ethtool_op_get_link,
1542        .get_coalesce = gfar_gcoalesce,
1543        .set_coalesce = gfar_scoalesce,
1544        .get_ringparam = gfar_gringparam,
1545        .set_ringparam = gfar_sringparam,
1546        .get_pauseparam = gfar_gpauseparam,
1547        .set_pauseparam = gfar_spauseparam,
1548        .get_strings = gfar_gstrings,
1549        .get_sset_count = gfar_sset_count,
1550        .get_ethtool_stats = gfar_fill_stats,
1551        .get_msglevel = gfar_get_msglevel,
1552        .set_msglevel = gfar_set_msglevel,
1553#ifdef CONFIG_PM
1554        .get_wol = gfar_get_wol,
1555        .set_wol = gfar_set_wol,
1556#endif
1557        .set_rxnfc = gfar_set_nfc,
1558        .get_rxnfc = gfar_get_nfc,
1559        .get_ts_info = gfar_get_ts_info,
1560        .get_link_ksettings = phy_ethtool_get_link_ksettings,
1561        .set_link_ksettings = phy_ethtool_set_link_ksettings,
1562};
1563